/* cytoscape.js */
/**
* This file is part of cytoscape.js 2.0.3.
*
* Cytoscape.js is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Cytoscape.js is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License along with
* cytoscape.js. If not, see .
*/
// this is put as a global var in the browser
// or it's just a global to this module if commonjs
var cytoscape;
(function(){
// the object iteself is a function that init's an instance of cytoscape
var $$ = cytoscape = function(){
return cytoscape.init.apply(cytoscape, arguments);
};
// allow functional access to cytoscape.js
// e.g. var cyto = $.cytoscape({ selector: "#foo", ... });
// var nodes = cyto.nodes();
$$.init = function( options ){
// if no options specified, use default
if( options === undefined ){
options = {};
}
// create instance
if( $$.is.plainObject( options ) ){
return new $$.Core( options );
}
// allow for registration of extensions
// e.g. $.cytoscape("renderer", "svg", SvgRenderer);
// e.g. $.cytoscape("renderer", "svg", "nodeshape", "ellipse", SvgEllipseNodeShape);
// e.g. $.cytoscape("core", "doSomething", function(){ /* doSomething code */ });
// e.g. $.cytoscape("collection", "doSomething", function(){ /* doSomething code */ });
else if( $$.is.string( options ) ) {
return $$.extension.apply($$.extension, arguments);
}
};
// define the function namespace here, since it has members in many places
$$.fn = {};
// TODO test that this works:
if( typeof exports !== 'undefined' ){ // expose as a commonjs module
exports = module.exports = cytoscape;
}
// make sure we always register in the window just in case (e.g. w/ derbyjs)
window.cytoscape = cytoscape;
})();
// type testing utility functions
;(function($$){
$$.is = {
string: function(obj){
return obj != null && typeof obj == typeof "";
},
fn: function(obj){
return obj != null && typeof obj === typeof function(){};
},
array: function(obj){
return obj != null && obj instanceof Array;
},
plainObject: function(obj){
return obj != null && typeof obj === typeof {} && !$$.is.array(obj) && obj.constructor === Object;
},
number: function(obj){
return obj != null && typeof obj === typeof 1 && !isNaN(obj);
},
integer: function( obj ){
return $$.is.number(obj) && Math.floor(obj) === obj;
},
color: function(obj){
return obj != null && typeof obj === typeof "" && $.Color(obj).toString() !== "";
},
bool: function(obj){
return obj != null && typeof obj === typeof true;
},
elementOrCollection: function(obj){
return $$.is.element(obj) || $$.is.collection(obj);
},
element: function(obj){
return obj instanceof $$.Element && obj._private.single;
},
collection: function(obj){
return obj instanceof $$.Collection && !obj._private.single;
},
core: function(obj){
return obj instanceof $$.Core;
},
style: function(obj){
return obj instanceof $$.Style;
},
stylesheet: function(obj){
return obj instanceof $$.Stylesheet;
},
event: function(obj){
return obj instanceof $$.Event;
},
emptyString: function(obj){
if( !obj ){ // null is empty
return true;
} else if( $$.is.string(obj) ){
if( obj === "" || obj.match(/^\s+$/) ){
return true; // empty string is empty
}
}
return false; // otherwise, we don't know what we've got
},
nonemptyString: function(obj){
if( obj && $$.is.string(obj) && obj !== "" && !obj.match(/^\s+$/) ){
return true;
}
return false;
},
domElement: function(obj){
if( typeof HTMLElement === 'undefined' ){
return false; // we're not in a browser so it doesn't matter
} else {
return obj instanceof HTMLElement;
}
}
};
})( cytoscape );
;(function($$){
// utility functions only for internal use
$$.util = {
// the jquery extend() function
// NB: modified to use $$.is etc since we can't use jquery functions
extend: function() {
var options, name, src, copy, copyIsArray, clone,
target = arguments[0] || {},
i = 1,
length = arguments.length,
deep = false;
// Handle a deep copy situation
if ( typeof target === "boolean" ) {
deep = target;
target = arguments[1] || {};
// skip the boolean and the target
i = 2;
}
// Handle case when target is a string or something (possible in deep copy)
if ( typeof target !== "object" && !$$.is.fn(target) ) {
target = {};
}
// extend jQuery itself if only one argument is passed
if ( length === i ) {
target = this;
--i;
}
for ( ; i < length; i++ ) {
// Only deal with non-null/undefined values
if ( (options = arguments[ i ]) != null ) {
// Extend the base object
for ( name in options ) {
src = target[ name ];
copy = options[ name ];
// Prevent never-ending loop
if ( target === copy ) {
continue;
}
// Recurse if we're merging plain objects or arrays
if ( deep && copy && ( $$.is.plainObject(copy) || (copyIsArray = $$.is.array(copy)) ) ) {
if ( copyIsArray ) {
copyIsArray = false;
clone = src && $$.is.array(src) ? src : [];
} else {
clone = src && $$.is.plainObject(src) ? src : {};
}
// Never move original objects, clone them
target[ name ] = $$.util.extend( deep, clone, copy );
// Don't bring in undefined values
} else if ( copy !== undefined ) {
target[ name ] = copy;
}
}
}
}
// Return the modified object
return target;
},
error: function( msg ){
if( console ){
if( console.error ){
console.error( msg );
} else if( console.log ){
console.log( msg );
} else {
throw msg;
}
} else {
throw msg;
}
},
clone: function( obj ){
var target = {};
for (var i in obj) {
if ( obj.hasOwnProperty(i) ) { // TODO is this hasOwnProperty() call necessary for our use?
target[i] = obj[i];
}
}
return target;
},
// gets a shallow copy of the argument
copy: function( obj ){
if( obj == null ){
return obj;
} if( $$.is.array(obj) ){
return obj.slice();
} else if( $$.is.plainObject(obj) ){
return $$.util.clone( obj );
} else {
return obj;
}
},
// has anything been set in the map
mapEmpty: function( map ){
var empty = true;
if( map != null ){
for(var i in map){
empty = false;
break;
}
}
return empty;
},
// pushes to the array at the end of a map (map may not be built)
pushMap: function( options ){
var array = $$.util.getMap(options);
if( array == null ){ // if empty, put initial array
$$.util.setMap( $.extend({}, options, {
value: [ options.value ]
}) );
} else {
array.push( options.value );
}
},
// sets the value in a map (map may not be built)
setMap: function( options ){
var obj = options.map;
var key;
var keys = options.keys;
var l = keys.length;
for(var i = 0; i < l; i++){
var key = keys[i];
if( $$.is.plainObject( key ) ){
$$.util.error("Tried to set map with object key");
}
if( i < keys.length - 1 ){
// extend the map if necessary
if( obj[key] == null ){
obj[key] = {};
}
obj = obj[key];
} else {
// set the value
obj[key] = options.value;
}
}
},
// gets the value in a map even if it's not built in places
getMap: function( options ){
var obj = options.map;
var keys = options.keys;
var l = keys.length;
for(var i = 0; i < l; i++){
var key = keys[i];
if( $$.is.plainObject( key ) ){
$$.util.error("Tried to get map with object key");
}
obj = obj[key];
if( obj == null ){
return obj;
}
}
return obj;
},
// deletes the entry in the map
deleteMap: function( options ){
var obj = options.map;
var keys = options.keys;
var l = keys.length;
var keepChildren = options.keepChildren;
for(var i = 0; i < l; i++){
var key = keys[i];
if( $$.is.plainObject( key ) ){
$$.util.error("Tried to delete map with object key");
}
var lastKey = i === options.keys.length - 1;
if( lastKey ){
if( keepChildren ){ // then only delete child fields not in keepChildren
for( var child in obj ){
if( !keepChildren[child] ){
delete obj[child];
}
}
} else {
delete obj[key];
}
} else {
obj = obj[key];
}
}
},
capitalize: function(str){
if( $$.is.emptyString(str) ){
return str;
}
return str.charAt(0).toUpperCase() + str.substring(1);
},
camel2dash: function( str ){
var ret = [];
for( var i = 0; i < str.length; i++ ){
var ch = str[i];
var chLowerCase = ch.toLowerCase();
var isUpperCase = ch !== chLowerCase;
if( isUpperCase ){
ret.push( "-" );
ret.push( chLowerCase );
} else {
ret.push( ch );
}
}
var noUpperCases = ret.length === str.length;
if( noUpperCases ){ return str } // cheaper than .join()
return ret.join("");
},
dash2camel: function( str ){
var ret = [];
var nextIsUpper = false;
for( var i = 0; i < str.length; i++ ){
var ch = str[i];
var isDash = ch === "-";
if( isDash ){
nextIsUpper = true;
} else {
if( nextIsUpper ){
ret.push( ch.toUpperCase() );
} else {
ret.push( ch );
}
nextIsUpper = false;
}
}
return ret.join("");
},
// strip spaces from beginning of string and end of string
trim: function( str ){
var first, last;
// find first non-space char
for( first = 0; first < str.length && str[first] === " "; first++ ){}
// find last non-space char
for( last = str.length - 1; last > first && str[last] === " "; last-- ){}
return str.substring(first, last + 1);
},
// get [r, g, b] from #abc or #aabbcc
hex2tuple: function( hex ){
if( !(hex.length === 4 || hex.length === 7) || hex[0] !== "#" ){ return; }
var shortHex = hex.length === 4;
var r, g, b;
var base = 16;
if( shortHex ){
r = parseInt( hex[1] + hex[1], base );
g = parseInt( hex[2] + hex[2], base );
b = parseInt( hex[3] + hex[3], base );
} else {
r = parseInt( hex[1] + hex[2], base );
g = parseInt( hex[3] + hex[4], base );
b = parseInt( hex[5] + hex[6], base );
}
return [r, g, b];
},
// get [r, g, b, a] from hsl(0, 0, 0) or hsla(0, 0, 0, 0)
hsl2tuple: function( hsl ){
var ret;
var number = $$.util.regex.number;
var h, s, l, a, r, g, b;
var m = new RegExp("^" + $$.util.regex.hsla + "$").exec(hsl);
if( m ){
// get hue
h = parseInt( m[1] );
if( h < 0 ){
h = ( 360 - (-1*h % 360) ) % 360;
} else if( h > 360 ){
h = h % 360;
}
h /= 360; // normalise on [0, 1]
s = parseFloat( m[2] );
if( s < 0 || s > 100 ){ return; } // saturation is [0, 100]
s = s/100; // normalise on [0, 1]
l = parseFloat( m[3] );
if( l < 0 || l > 100 ){ return; } // lightness is [0, 100]
l = l/100; // normalise on [0, 1]
a = m[4];
if( a !== undefined ){
a = parseFloat( a );
if( a < 0 || a > 1 ){ return; } // alpha is [0, 1]
}
// now, convert to rgb
// code from http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript
if( s === 0 ){
r = g = b = Math.round(l * 255); // achromatic
} else {
function hue2rgb(p, q, t){
if(t < 0) t += 1;
if(t > 1) t -= 1;
if(t < 1/6) return p + (q - p) * 6 * t;
if(t < 1/2) return q;
if(t < 2/3) return p + (q - p) * (2/3 - t) * 6;
return p;
}
var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
var p = 2 * l - q;
r = Math.round( 255 * hue2rgb(p, q, h + 1/3) );
g = Math.round( 255 * hue2rgb(p, q, h) );
b = Math.round( 255 * hue2rgb(p, q, h - 1/3) );
}
ret = [r, g, b, a];
}
return ret;
},
// get [r, g, b, a] from rgb(0, 0, 0) or rgba(0, 0, 0, 0)
rgb2tuple: function( rgb ){
var ret;
var number = $$.util.regex.number;
var m = new RegExp("^" + $$.util.regex.rgba + "$").exec(rgb);
if( m ){
ret = [];
var isPct = [];
for( var i = 1; i <= 3; i++ ){
var channel = m[i];
if( channel[ channel.length - 1 ] === "%" ){
isPct[i] = true;
}
channel = parseFloat( channel );
if( isPct[i] ){
channel = channel/100 * 255; // normalise to [0, 255]
}
if( channel < 0 || channel > 255 ){ return; } // invalid channel value
ret.push( Math.floor(channel) );
}
var atLeastOneIsPct = isPct[1] || isPct[2] || isPct[3];
var allArePct = isPct[1] && isPct[2] && isPct[3];
if( atLeastOneIsPct && !allArePct ){ return; } // must all be percent values if one is
var alpha = m[4];
if( alpha !== undefined ){
alpha = parseFloat( alpha );
if( alpha < 0 || alpha > 1 ){ return; } // invalid alpha value
ret.push( alpha );
}
}
return ret;
},
colorname2tuple: function( color ){
return $$.util.colors[ color.toLowerCase() ];
},
color2tuple: function( color ){
return $$.util.colorname2tuple(color)
|| $$.util.hex2tuple(color)
|| $$.util.rgb2tuple(color)
|| $$.util.hsl2tuple(color);
},
tuple2hex: function( tuple ){
var r = tuple[0];
var g = tuple[1];
var b = tuple[2];
function ch2hex( ch ){
var hex = ch.toString(16);
if( hex.length === 1 ){
hex = '0' + hex;
}
return hex;
}
return '#' + ch2hex(r) + ch2hex(g) + ch2hex(b);
},
colors: {
// special colour names
transparent: [0,0,0,0], // NB alpha === 0
// regular colours
aliceblue: [240,248,255],
antiquewhite: [250,235,215],
aqua: [0,255,255],
aquamarine: [127,255,212],
azure: [240,255,255],
beige: [245,245,220],
bisque: [255,228,196],
black: [0,0,0],
blanchedalmond: [255,235,205],
blue: [0,0,255],
blueviolet: [138,43,226],
brown: [165,42,42],
burlywood: [222,184,135],
cadetblue: [95,158,160],
chartreuse: [127,255,0],
chocolate: [210,105,30],
coral: [255,127,80],
cornflowerblue: [100,149,237],
cornsilk: [255,248,220],
crimson: [220,20,60],
cyan: [0,255,255],
darkblue: [0,0,139],
darkcyan: [0,139,139],
darkgoldenrod: [184,134,11],
darkgray: [169,169,169],
darkgreen: [0,100,0],
darkgrey: [169,169,169],
darkkhaki: [189,183,107],
darkmagenta: [139,0,139],
darkolivegreen: [85,107,47],
darkorange: [255,140,0],
darkorchid: [153,50,204],
darkred: [139,0,0],
darksalmon: [233,150,122],
darkseagreen: [143,188,143],
darkslateblue: [72,61,139],
darkslategray: [47,79,79],
darkslategrey: [47,79,79],
darkturquoise: [0,206,209],
darkviolet: [148,0,211],
deeppink: [255,20,147],
deepskyblue: [0,191,255],
dimgray: [105,105,105],
dimgrey: [105,105,105],
dodgerblue: [30,144,255],
firebrick: [178,34,34],
floralwhite: [255,250,240],
forestgreen: [34,139,34],
fuchsia: [255,0,255],
gainsboro: [220,220,220],
ghostwhite: [248,248,255],
gold: [255,215,0],
goldenrod: [218,165,32],
gray: [128,128,128],
grey: [128,128,128],
green: [0,128,0],
greenyellow: [173,255,47],
honeydew: [240,255,240],
hotpink: [255,105,180],
indianred: [205,92,92],
indigo: [75,0,130],
ivory: [255,255,240],
khaki: [240,230,140],
lavender: [230,230,250],
lavenderblush: [255,240,245],
lawngreen: [124,252,0],
lemonchiffon: [255,250,205],
lightblue: [173,216,230],
lightcoral: [240,128,128],
lightcyan: [224,255,255],
lightgoldenrodyellow: [250,250,210],
lightgray: [211,211,211],
lightgreen: [144,238,144],
lightgrey: [211,211,211],
lightpink: [255,182,193],
lightsalmon: [255,160,122],
lightseagreen: [32,178,170],
lightskyblue: [135,206,250],
lightslategray: [119,136,153],
lightslategrey: [119,136,153],
lightsteelblue: [176,196,222],
lightyellow: [255,255,224],
lime: [0,255,0],
limegreen: [50,205,50],
linen: [250,240,230],
magenta: [255,0,255],
maroon: [128,0,0],
mediumaquamarine: [102,205,170],
mediumblue: [0,0,205],
mediumorchid: [186,85,211],
mediumpurple: [147,112,219],
mediumseagreen: [60,179,113],
mediumslateblue: [123,104,238],
mediumspringgreen: [0,250,154],
mediumturquoise: [72,209,204],
mediumvioletred: [199,21,133],
midnightblue: [25,25,112],
mintcream: [245,255,250],
mistyrose: [255,228,225],
moccasin: [255,228,181],
navajowhite: [255,222,173],
navy: [0,0,128],
oldlace: [253,245,230],
olive: [128,128,0],
olivedrab: [107,142,35],
orange: [255,165,0],
orangered: [255,69,0],
orchid: [218,112,214],
palegoldenrod: [238,232,170],
palegreen: [152,251,152],
paleturquoise: [175,238,238],
palevioletred: [219,112,147],
papayawhip: [255,239,213],
peachpuff: [255,218,185],
peru: [205,133,63],
pink: [255,192,203],
plum: [221,160,221],
powderblue: [176,224,230],
purple: [128,0,128],
red: [255,0,0],
rosybrown: [188,143,143],
royalblue: [65,105,225],
saddlebrown: [139,69,19],
salmon: [250,128,114],
sandybrown: [244,164,96],
seagreen: [46,139,87],
seashell: [255,245,238],
sienna: [160,82,45],
silver: [192,192,192],
skyblue: [135,206,235],
slateblue: [106,90,205],
slategray: [112,128,144],
slategrey: [112,128,144],
snow: [255,250,250],
springgreen: [0,255,127],
steelblue: [70,130,180],
tan: [210,180,140],
teal: [0,128,128],
thistle: [216,191,216],
tomato: [255,99,71],
turquoise: [64,224,208],
violet: [238,130,238],
wheat: [245,222,179],
white: [255,255,255],
whitesmoke: [245,245,245],
yellow: [255,255,0],
yellowgreen: [154,205,50]
}
};
$$.util.regex = {};
$$.util.regex.number = "(?:[-]?\\d*\\.\\d+|[-]?\\d+|[-]?\\d*\\.\\d+[eE]\\d+)";
$$.util.regex.rgba = "rgb[a]?\\(("+ $$.util.regex.number +"[%]?)\\s*,\\s*("+ $$.util.regex.number +"[%]?)\\s*,\\s*("+ $$.util.regex.number +"[%]?)(?:\\s*,\\s*("+ $$.util.regex.number +"))?\\)";
$$.util.regex.rgbaNoBackRefs = "rgb[a]?\\((?:"+ $$.util.regex.number +"[%]?)\\s*,\\s*(?:"+ $$.util.regex.number +"[%]?)\\s*,\\s*(?:"+ $$.util.regex.number +"[%]?)(?:\\s*,\\s*(?:"+ $$.util.regex.number +"))?\\)";
$$.util.regex.hsla = "hsl[a]?\\(("+ $$.util.regex.number +")\\s*,\\s*("+ $$.util.regex.number +"[%])\\s*,\\s*("+ $$.util.regex.number +"[%])(?:\\s*,\\s*("+ $$.util.regex.number +"))?\\)";
$$.util.regex.hslaNoBackRefs = "hsl[a]?\\((?:"+ $$.util.regex.number +")\\s*,\\s*(?:"+ $$.util.regex.number +"[%])\\s*,\\s*(?:"+ $$.util.regex.number +"[%])(?:\\s*,\\s*(?:"+ $$.util.regex.number +"))?\\)";
$$.util.regex.hex3 = "\\#[0-9a-fA-F]{3}";
$$.util.regex.hex6 = "\\#[0-9a-fA-F]{6}";
})( cytoscape );
;(function($$){
$$.math = {};
$$.math.boxInBezierVicinity = function(
x1box, y1box, x2box, y2box, x1, y1, x2, y2, x3, y3, tolerance) {
// Return values:
// 0 - curve is not in box
// 1 - curve may be in box; needs precise check
// 2 - curve is in box
var boxMinX = Math.min(x1box, x2box) - tolerance;
var boxMinY = Math.min(y1box, y2box) - tolerance;
var boxMaxX = Math.max(x1box, x2box) + tolerance;
var boxMaxY = Math.max(y1box, y2box) + tolerance;
if (x1 >= boxMinX && x1 <= boxMaxX && y1 >= boxMinY && y1 <= boxMaxY) {
return 2;
} else if (x3 >= boxMinX && x3 <= boxMaxX && y3 >= boxMinY && y3 <= boxMaxY) {
return 2;
} else if (x2 >= boxMinX && x2 <= boxMaxX && y2 >= boxMinY && y2 <= boxMaxY) {
return 1;
}
var curveMinX = Math.min(x1, x2, x3);
var curveMinY = Math.min(y1, y2, y3);
var curveMaxX = Math.max(x1, x2, x3);
var curveMaxY = Math.max(y1, y2, y3);
/*
console.log(curveMinX + ", " + curveMinY + ", " + curveMaxX
+ ", " + curveMaxY);
if (curveMinX == undefined) {
console.log("undefined curveMinX: " + x1 + ", " + x2 + ", " + x3);
}
*/
if (curveMinX > boxMaxX
|| curveMaxX < boxMinX
|| curveMinY > boxMaxY
|| curveMaxY < boxMinY) {
return 0;
}
return 1;
}
$$.math.checkStraightEdgeCrossesBox = function(
x1box, y1box, x2box, y2box, x1, y1, x2, y2, tolerance) {
var boxMinX = Math.min(x1box, x2box) - tolerance;
var boxMinY = Math.min(y1box, y2box) - tolerance;
var boxMaxX = Math.max(x1box, x2box) + tolerance;
var boxMaxY = Math.max(y1box, y2box) + tolerance;
// Check left + right bounds
var aX = x2 - x1;
var bX = x1;
var yValue;
// Top and bottom
var aY = y2 - y1;
var bY = y1;
var xValue;
if (Math.abs(aX) < 0.0001) {
return (x1 >= boxMinX && x1 <= boxMaxX
&& Math.min(y1, y2) <= boxMinY
&& Math.max(y1, y2) >= boxMaxY);
}
var tLeft = (boxMinX - bX) / aX;
if (tLeft > 0 && tLeft <= 1) {
yValue = aY * tLeft + bY;
if (yValue >= boxMinY && yValue <= boxMaxY) {
return true;
}
}
var tRight = (boxMaxX - bX) / aX;
if (tRight > 0 && tRight <= 1) {
yValue = aY * tRight + bY;
if (yValue >= boxMinY && yValue <= boxMaxY) {
return true;
}
}
var tTop = (boxMinY - bY) / aY;
if (tTop > 0 && tTop <= 1) {
xValue = aX * tTop + bX;
if (xValue >= boxMinX && xValue <= boxMaxX) {
return true;
}
}
var tBottom = (boxMaxY - bY) / aY;
if (tBottom > 0 && tBottom <= 1) {
xValue = aX * tBottom + bX;
if (xValue >= boxMinX && xValue <= boxMaxX) {
return true;
}
}
return false;
}
$$.math.checkBezierCrossesBox = function(
x1box, y1box, x2box, y2box, x1, y1, x2, y2, x3, y3, tolerance) {
var boxMinX = Math.min(x1box, x2box) - tolerance;
var boxMinY = Math.min(y1box, y2box) - tolerance;
var boxMaxX = Math.max(x1box, x2box) + tolerance;
var boxMaxY = Math.max(y1box, y2box) + tolerance;
if (x1 >= boxMinX && x1 <= boxMaxX && y1 >= boxMinY && y1 <= boxMaxY) {
return true;
} else if (x3 >= boxMinX && x3 <= boxMaxX && y3 >= boxMinY && y3 <= boxMaxY) {
return true;
}
var aX = x1 - 2 * x2 + x3;
var bX = -2 * x1 + 2 * x2;
var cX = x1;
var xIntervals = [];
if (Math.abs(aX) < 0.0001) {
var leftParam = (boxMinX - x1) / bX;
var rightParam = (boxMaxX - x1) / bX;
xIntervals.push(leftParam, rightParam);
} else {
// Find when x coordinate of the curve crosses the left side of the box
var discriminantX1 = bX * bX - 4 * aX * (cX - boxMinX);
var tX1, tX2;
if (discriminantX1 > 0) {
var sqrt = Math.sqrt(discriminantX1);
tX1 = (-bX + sqrt) / (2 * aX);
tX2 = (-bX - sqrt) / (2 * aX);
xIntervals.push(tX1, tX2);
}
var discriminantX2 = bX * bX - 4 * aX * (cX - boxMaxX);
var tX3, tX4;
if (discriminantX2 > 0) {
var sqrt = Math.sqrt(discriminantX2);
tX3 = (-bX + sqrt) / (2 * aX);
tX4 = (-bX - sqrt) / (2 * aX);
xIntervals.push(tX3, tX4);
}
}
xIntervals.sort(function(a, b) { return a - b; });
var aY = y1 - 2 * y2 + y3;
var bY = -2 * y1 + 2 * y2;
var cY = y1;
var yIntervals = [];
if (Math.abs(aY) < 0.0001) {
var topParam = (boxMinY - y1) / bY;
var bottomParam = (boxMaxY - y1) / bY;
yIntervals.push(topParam, bottomParam);
} else {
var discriminantY1 = bY * bY - 4 * aY * (cY - boxMinY);
var tY1, tY2;
if (discriminantY1 > 0) {
var sqrt = Math.sqrt(discriminantY1);
tY1 = (-bY + sqrt) / (2 * aY);
tY2 = (-bY - sqrt) / (2 * aY);
yIntervals.push(tY1, tY2);
}
var discriminantY2 = bY * bY - 4 * aY * (cY - boxMaxY);
var tY3, tY4;
if (discriminantY2 > 0) {
var sqrt = Math.sqrt(discriminantY2);
tY3 = (-bY + sqrt) / (2 * aY);
tY4 = (-bY - sqrt) / (2 * aY);
yIntervals.push(tY3, tY4);
}
}
yIntervals.sort(function(a, b) { return a - b; });
for (var index = 0; index < xIntervals.length; index += 2) {
for (var yIndex = 1; yIndex < yIntervals.length; yIndex += 2) {
// Check if there exists values for the Bezier curve
// parameter between 0 and 1 where both the curve's
// x and y coordinates are within the bounds specified by the box
if (xIntervals[index] < yIntervals[yIndex]
&& yIntervals[yIndex] >= 0.0
&& xIntervals[index] <= 1.0
&& xIntervals[index + 1] > yIntervals[yIndex - 1]
&& yIntervals[yIndex - 1] <= 1.0
&& xIntervals[index + 1] >= 0.0) {
return true;
}
}
}
return false;
}
$$.math.inBezierVicinity = function(
x, y, x1, y1, x2, y2, x3, y3, toleranceSquared) {
// Middle point occurs when t = 0.5, this is when the Bezier
// is closest to (x2, y2)
var middlePointX = 0.25 * x1 + 0.5 * x2 + 0.25 * x3;
var middlePointY = 0.25 * y1 + 0.5 * y2 + 0.25 * y3;
var displacementX, displacementY, offsetX, offsetY;
var dotProduct, dotSquared, hypSquared;
var outside = function(x, y, startX, startY, endX, endY,
toleranceSquared, counterClockwise) {
dotProduct = (endY - startY) * (x - startX) + (startX - endX) * (y - startY);
dotSquared = dotProduct * dotProduct;
sideSquared = (endY - startY) * (endY - startY)
+ (startX - endX) * (startX - endX);
if (counterClockwise) {
if (dotProduct > 0) {
return false;
}
} else {
if (dotProduct < 0) {
return false;
}
}
return (dotSquared / sideSquared > toleranceSquared);
};
// Used to check if the test polygon winding is clockwise or counterclockwise
var testPointX = (middlePointX + x2) / 2.0;
var testPointY = (middlePointY + y2) / 2.0;
var counterClockwise = true;
// The test point is always inside
if (outside(testPointX, testPointY, x1, y1, x2, y2, 0, counterClockwise)) {
counterClockwise = !counterClockwise;
}
/*
return (!outside(x, y, x1, y1, x2, y2, toleranceSquared, counterClockwise)
&& !outside(x, y, x2, y2, x3, y3, toleranceSquared, counterClockwise)
&& !outside(x, y, x3, y3, middlePointX, middlePointY, toleranceSquared,
counterClockwise)
&& !outside(x, y, middlePointX, middlePointY, x1, y1, toleranceSquared,
counterClockwise)
);
*/
return (!outside(x, y, x1, y1, x2, y2, toleranceSquared, counterClockwise)
&& !outside(x, y, x2, y2, x3, y3, toleranceSquared, counterClockwise)
&& !outside(x, y, x3, y3, x1, y1, toleranceSquared,
counterClockwise)
);
}
// Solves a cubic function, returns root in form [r1, i1, r2, i2, r3, i3], where
// r is the real component, i is the imaginary component
$$.math.solveCubic = function(a, b, c, d, result) {
// An implementation of the Cardano method
// http://en.wikipedia.org/wiki/Cubic_function#The_nature_of_the_roots
// provided by http://www3.telus.net/thothworks/Quad3Deg.html
// Get rid of a
b /= a;
c /= a;
d /= a;
var discrim, q, r, dum1, s, t, term1, r13;
q = (3.0 * c - (b * b)) / 9.0;
r = -(27.0 * d) + b * (9.0 * c - 2.0 * (b * b));
r /= 54.0;
discrim = q * q * q + r * r;
result[1] = 0; //The first root is always real.
term1 = (b / 3.0);
if (discrim > 0) { // one root real, two are complex
s = r + Math.sqrt(discrim);
s = ((s < 0) ? -Math.pow(-s, (1.0 / 3.0)) : Math.pow(s, (1.0 / 3.0)));
t = r - Math.sqrt(discrim);
t = ((t < 0) ? -Math.pow(-t, (1.0 / 3.0)) : Math.pow(t, (1.0 / 3.0)));
result[0] = -term1 + s + t;
term1 += (s + t) / 2.0;
result[4] = result[2] = -term1;
term1 = Math.sqrt(3.0) * (-t + s) / 2;
result[3] = term1;
result[5] = -term1;
return;
} // End if (discrim > 0)
// The remaining options are all real
result[5] = result[3] = 0;
if (discrim == 0){ // All roots real, at least two are equal.
r13 = ((r < 0) ? -Math.pow(-r, (1.0 / 3.0)) : Math.pow(r, (1.0 / 3.0)));
result[0] = -term1 + 2.0 * r13;
result[4] = result[2] = -(r13 + term1);
return;
} // End if (discrim == 0)
// Only option left is that all roots are real and unequal (to get here, q < 0)
q = -q;
dum1 = q * q * q;
dum1 = Math.acos(r / Math.sqrt(dum1));
r13 = 2.0 * Math.sqrt(q);
result[0] = -term1 + r13 * Math.cos(dum1 / 3.0);
result[2] = -term1 + r13 * Math.cos((dum1 + 2.0 * Math.PI) / 3.0);
result[4] = -term1 + r13 * Math.cos((dum1 + 4.0 * Math.PI) / 3.0);
return;
}
$$.math.sqDistanceToQuadraticBezier = function(x, y,
x1, y1, x2, y2, x3, y3) {
// Find minimum distance by using the minimum of the distance
// function between the given point and the curve
// This gives the coefficients of the resulting cubic equation
// whose roots tell us where a possible minimum is
// (Coefficients are divided by 4)
var a = 1.0 * x1*x1 - 4*x1*x2 + 2*x1*x3 + 4*x2*x2 - 4*x2*x3 + x3*x3
+ y1*y1 - 4*y1*y2 + 2*y1*y3 + 4*y2*y2 - 4*y2*y3 + y3*y3;
var b = 1.0 * 9*x1*x2 - 3*x1*x1 - 3*x1*x3 - 6*x2*x2 + 3*x2*x3
+ 9*y1*y2 - 3*y1*y1 - 3*y1*y3 - 6*y2*y2 + 3*y2*y3;
var c = 1.0 * 3*x1*x1 - 6*x1*x2 + x1*x3 - x1*x + 2*x2*x2 + 2*x2*x - x3*x
+ 3*y1*y1 - 6*y1*y2 + y1*y3 - y1*y + 2*y2*y2 + 2*y2*y - y3*y;
var d = 1.0 * x1*x2 - x1*x1 + x1*x - x2*x
+ y1*y2 - y1*y1 + y1*y - y2*y;
debug("coefficients: " + a / a + ", " + b / a + ", " + c / a + ", " + d / a);
var roots = [];
// Use the cubic solving algorithm
this.solveCubic(a, b, c, d, roots);
var zeroThreshold = 0.0000001;
var params = [];
for (var index = 0; index < 6; index += 2) {
if (Math.abs(roots[index + 1]) < zeroThreshold
&& roots[index] >= 0
&& roots[index] <= 1.0) {
params.push(roots[index]);
}
}
params.push(1.0);
params.push(0.0);
var minDistanceSquared = -1;
var closestParam;
var curX, curY, distSquared;
for (var i = 0; i < params.length; i++) {
curX = Math.pow(1.0 - params[i], 2.0) * x1
+ 2.0 * (1 - params[i]) * params[i] * x2
+ params[i] * params[i] * x3;
curY = Math.pow(1 - params[i], 2.0) * y1
+ 2 * (1.0 - params[i]) * params[i] * y2
+ params[i] * params[i] * y3;
distSquared = Math.pow(curX - x, 2) + Math.pow(curY - y, 2);
debug("distance for param " + params[i] + ": " + Math.sqrt(distSquared));
if (minDistanceSquared >= 0) {
if (distSquared < minDistanceSquared) {
minDistanceSquared = distSquared;
closestParam = params[i];
}
} else {
minDistanceSquared = distSquared;
closestParam = params[i];
}
}
/*
debugStats.clickX = x;
debugStats.clickY = y;
debugStats.closestX = Math.pow(1.0 - closestParam, 2.0) * x1
+ 2.0 * (1.0 - closestParam) * closestParam * x2
+ closestParam * closestParam * x3;
debugStats.closestY = Math.pow(1.0 - closestParam, 2.0) * y1
+ 2.0 * (1.0 - closestParam) * closestParam * y2
+ closestParam * closestParam * y3;
*/
debug("given: "
+ "( " + x + ", " + y + "), "
+ "( " + x1 + ", " + y1 + "), "
+ "( " + x2 + ", " + y2 + "), "
+ "( " + x3 + ", " + y3 + ")");
debug("roots: " + roots);
debug("params: " + params);
debug("closest param: " + closestParam);
return minDistanceSquared;
}
var debug = function(o) {
if (false) {
console.log(o);
}
}
})( cytoscape );
// type testing utility functions
;(function($$){
// list of ids with other metadata assoc'd with it
$$.instances = [];
$$.instanceCounter = 0;
$$.lastInstanceTime;
$$.registerInstance = function( instance, domElement ){
var cy;
if( $$.is.core(instance) ){
cy = instance;
} else if( $$.is.domElement(instance) ){
domElement = instance;
}
// if we have an old reg that is empty (no cy), then
var oldReg = $$.getRegistrationForInstance(instance, domElement);
if( oldReg ){
if( !oldReg.cy ){
oldReg.cy = instance;
oldReg.domElement = domElement;
} else {
$$.util.error('Tried to register on a pre-existing registration');
}
return oldReg;
// otherwise, just make a new registration
} else {
var time = +new Date;
var suffix;
// add a suffix in case instances collide on the same time
if( !$$.lastInstanceTime || $$.lastInstanceTime === time ){
$$.instanceCounter = 0;
} else {
++$$.instanceCounter;
}
$$.lastInstanceTime = time;
suffix = $$.instanceCounter;
var id = "cy-" + time + "-" + suffix;
// create the registration object
var registration = {
id: id,
cy: cy,
domElement: domElement,
readies: [] // list of bound ready functions before calling init
};
// put the registration object in the pool
$$.instances.push( registration );
$$.instances[ id ] = registration;
return registration;
}
};
$$.removeRegistrationForInstance = function(instance, domElement){
var cy;
if( $$.is.core(instance) ){
cy = instance;
} else if( $$.is.domElement(instance) ){
domElement = instance;
}
if( $$.is.core(cy) ){
var id = cy._private.instanceId;
delete $$.instances[ id ];
$$.instances.splice(id, 1);
} else if( $$.is.domElement(domElement) ){
for( var i = 0; i < $$.instances.length; i++ ){
var reg = $$.instances[i];
if( reg.domElement === domElement ){
delete $$.instances[ reg.id ];
$$.instances.splice(i, 1);
i--;
}
}
}
}
$$.getRegistrationForInstance = function( instance, domElement ){
var cy;
if( $$.is.core(instance) ){
if( instance.registered() ){ // only want it if it's registered b/c if not it has no reg'd id
cy = instance;
}
} else if( $$.is.domElement(instance) ){
domElement = instance;
}
if( $$.is.core(cy) ){
var id = cy._private.instanceId;
return $$.instances[ id ];
} else if( $$.is.domElement(domElement) ){
for( var i = $$.instances.length - 1; i >= 0; i-- ){ // look backwards, since most recent is the one we want
var reg = $$.instances[i];
if( reg.domElement === domElement ){
return reg;
}
}
}
};
})( cytoscape );
;(function($$){
// registered extensions to cytoscape, indexed by name
var extensions = {};
$$.extensions = extensions;
// registered modules for extensions, indexed by name
var modules = {};
$$.modules = modules;
function setExtension(type, name, registrant){
var impl = {};
impl[name] = registrant;
switch( type ){
case "core":
case "collection":
$$.fn[type]( impl );
}
return $$.util.setMap({
map: extensions,
keys: [ type, name ],
value: registrant
});
}
function getExtension(type, name){
return $$.util.getMap({
map: extensions,
keys: [ type, name ]
});
}
function setModule(type, name, moduleType, moduleName, registrant){
return $$.util.setMap({
map: modules,
keys: [ type, name, moduleType, moduleName ],
value: registrant
});
}
function getModule(type, name, moduleType, moduleName){
return $$.util.getMap({
map: modules,
keys: [ type, name, moduleType, moduleName ]
});
}
$$.extension = function(){
// e.g. $$.extension("renderer", "svg")
if( arguments.length == 2 ){
return getExtension.apply(this, arguments);
}
// e.g. $$.extension("renderer", "svg", { ... })
else if( arguments.length == 3 ){
return setExtension.apply(this, arguments);
}
// e.g. $$.extension("renderer", "svg", "nodeShape", "ellipse")
else if( arguments.length == 4 ){
return getModule.apply(this, arguments);
}
// e.g. $$.extension("renderer", "svg", "nodeShape", "ellipse", { ... })
else if( arguments.length == 5 ){
return setModule.apply(this, arguments);
}
else {
$.error("Invalid extension access syntax");
}
};
})( cytoscape );
;(function($, $$){
if( !$ ){ return } // no jquery => don't need this
// allow calls on a jQuery selector by proxying calls to $.cytoscape
// e.g. $("#foo").cytoscape(options) => $.cytoscape(options) on #foo
$.fn.cytoscape = function(opts){
var $this = $(this);
// get object
if( opts === "get" ){
var reg = $$.getRegistrationForInstance( $this[0] );
return reg.cy;
}
// bind to ready
else if( $$.is.fn(opts) ){
//debugger;
var ready = opts;
var domEle = $this[0];
var reg = $$.getRegistrationForInstance( domEle );
if( !reg ){
reg = $$.registerInstance( domEle );
}
if( reg && reg.cy && reg.cy.ready() ){
// already ready so just trigger now
reg.cy.trigger("ready", [], ready);
} else {
// not yet ready, so add to readies list
reg.readies.push( ready );
}
}
// proxy to create instance
else if( $$.is.plainObject(opts) ){
return $this.each(function(){
var options = $.extend({}, opts, {
container: $(this)[0]
});
cytoscape(options);
});
}
// proxy a function call
else {
var domEle = $this[0];
var rets = [];
var args = [];
for(var i = 1; i < arguments.length; i++){
args[i - 1] = arguments[i];
}
$this.each(function(){
var reg = $$.getRegistrationForInstance( domEle );
var cy = reg.cy;
var fnName = opts;
if( cy && $$.is.fn( cy[fnName] ) ){
var ret = cy[fnName].apply(cy, args);
rets.push(ret);
}
});
// if only one instance, don't need to return array
if( rets.length === 1 ){
rets = rets[0];
} else if( rets.length == 0 ){
rets = $(this);
}
return rets;
}
};
// allow access to the global cytoscape object under jquery for legacy reasons
$.cytoscape = cytoscape;
// use short alias (cy) if not already defined
if( $.fn.cy == null && $.cy == null ){
$.fn.cy = $.fn.cytoscape;
$.cy = $.cytoscape;
}
// allow jquery mobile style init
$(function(){ // on ready
function parse($this, attr){
var str = $this.attr( attr );
var ret;
try {
ret = $.parseJSON( attr );
} catch(e){
ret = undefined;
}
}
$('[data-role="cytoscape"]').each(function(){
var $this = $(this);
// NB core init options must be added here if they are going to be supported
// with jquery-mobile-like syntax
var options = {
showOverlay: parse($this, 'data-show-overlay'),
layout: parse($this, 'data-layout'),
zoom: parse($this, 'data-zoom'),
minZoom: parse($this, 'data-min-zoom'),
maxZoom: parse($this, 'data-max-zoom'),
pan: parse($this, 'data-pan'),
renderer: parse($this, 'data-renderer'),
style: parse($this, 'data-style'),
elements: parse($this, 'data-elements')
};
$this.cytoscape( options );
});
});
})(typeof jQuery !== 'undefined' ? jQuery : null , cytoscape);
;(function($$){
// shamelessly taken from jQuery
// https://github.com/jquery/jquery/blob/master/src/event.js
$$.Event = function( src, props ) {
// Allow instantiation without the 'new' keyword
if ( !(this instanceof $$.Event) ) {
return new $$.Event( src, props );
}
// Event object
if ( src && src.type ) {
this.originalEvent = src;
this.type = src.type;
// Events bubbling up the document may have been marked as prevented
// by a handler lower down the tree; reflect the correct value.
this.isDefaultPrevented = ( src.defaultPrevented || src.returnValue === false ||
src.getPreventDefault && src.getPreventDefault() ) ? returnTrue : returnFalse;
// Event type
} else {
this.type = src;
}
// Put explicitly provided properties onto the event object
if ( props ) {
$$.util.extend( this, props );
}
// Create a timestamp if incoming event doesn't have one
this.timeStamp = src && src.timeStamp || +new Date;
// Mark it as fixed
//this[ jQuery.expando ] = true;
};
function returnFalse() {
return false;
}
function returnTrue() {
return true;
}
// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding
// http://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
$$.Event.prototype = {
preventDefault: function() {
this.isDefaultPrevented = returnTrue;
var e = this.originalEvent;
if ( !e ) {
return;
}
// if preventDefault exists run it on the original event
if ( e.preventDefault ) {
e.preventDefault();
// otherwise set the returnValue property of the original event to false (IE)
} else {
e.returnValue = false;
}
},
stopPropagation: function() {
this.isPropagationStopped = returnTrue;
var e = this.originalEvent;
if ( !e ) {
return;
}
// if stopPropagation exists run it on the original event
if ( e.stopPropagation ) {
e.stopPropagation();
}
// otherwise set the cancelBubble property of the original event to true (IE)
e.cancelBubble = true;
},
stopImmediatePropagation: function() {
this.isImmediatePropagationStopped = returnTrue;
this.stopPropagation();
},
isDefaultPrevented: returnFalse,
isPropagationStopped: returnFalse,
isImmediatePropagationStopped: returnFalse
};
})( cytoscape );
;(function($$){
// metaprogramming makes me happy
// use this module to cherry pick functions into your prototype
// (useful for functions shared between the core and collections, for example)
// e.g.
// $$.fn.collection({
// foo: $$.define.foo({ /* params... */ })
// });
$$.define = {
// access data field
data: function( params ){
var defaults = {
field: "data",
bindingEvent: "data",
allowBinding: false,
allowSetting: false,
allowGetting: false,
settingEvent: "data",
settingTriggersEvent: false,
triggerFnName: "trigger",
immutableKeys: {}, // key => true if immutable
updateMappers: false
};
params = $$.util.extend({}, defaults, params);
return function( name, value ){
var p = params;
var self = this;
var selfIsArrayLike = self.length !== undefined;
var all = selfIsArrayLike ? self : [self]; // put in array if not array-like
var single = selfIsArrayLike ? self[0] : self;
// .data("foo", ...)
if( $$.is.string(name) ){ // set or get property
// .data("foo")
if( p.allowGetting && value === undefined ){ // get
var ret;
if( single ){
ret = single._private[ p.field ][ name ];
}
return ret;
// .data("foo", "bar")
} else if( p.allowSetting && value !== undefined ) { // set
var valid = !p.immutableKeys[name];
if( valid ){
for( var i = 0, l = all.length; i < l; i++ ){
all[i]._private[ p.field ][ name ] = value;
}
// update mappers if asked
if( p.updateMappers ){ self.updateMappers(); }
if( p.settingTriggersEvent ){
self[ p.triggerFnName ]( p.settingEvent );
}
}
}
// .data({ "foo": "bar" })
} else if( p.allowSetting && $$.is.plainObject(name) ){ // extend
var obj = name;
var k, v;
for( k in obj ){
v = obj[ k ];
var valid = !p.immutableKeys[k];
if( valid ){
for( var i = 0, l = all.length; i < l; i++ ){
all[i]._private[ p.field ][ k ] = v;
}
}
}
// update mappers if asked
if( p.updateMappers ){ self.updateMappers(); }
if( p.settingTriggersEvent ){
self[ p.triggerFnName ]( p.settingEvent );
}
// .data(function(){ ... })
} else if( p.allowBinding && $$.is.fn(name) ){ // bind to event
var fn = name;
self.bind( p.bindingEvent, fn );
// .data()
} else if( p.allowGetting && name === undefined ){ // get whole object
var ret;
if( single ){
ret = single._private[ p.field ];
}
return ret;
}
return self; // maintain chainability
}; // function
}, // data
batchData: function( params ){
var defaults = {
field: "data",
event: "data",
triggerFnName: "trigger",
immutableKeys: {}, // key => true if immutable
updateMappers: false
};
var p = params = $$.util.extend({}, defaults, params);
return function( map ){
var self = this;
var selfIsArrayLike = self.length !== undefined;
var eles = selfIsArrayLike ? self : self._private.elements;
if( eles.length === 0 ){ return self; }
var cy = selfIsArrayLike ? eles[0]._private.cy : self; // NB must have at least 1 ele to get cy
for( var i = 0; i < eles.length; i++ ){
var ele = eles[i];
var id = ele._private.data.id;
var mapData = map[id];
if( mapData !== undefined && mapData !== null ){
var obj = mapData;
var k, v;
// set the (k, v) pairs from the map
for( k in obj ){
v = obj[ k ];
var valid = !p.immutableKeys[k];
if( valid ){
ele._private[ p.field ][ k ] = v;
}
}
} // if
} // for
// update mappers if asked
var coln = new $$.Collection(cy, eles);
if( p.updateMappers ){ coln.updateMappers(); }
coln[ p.triggerFnName ]( p.event );
return self; // chaining
};
},
// remove data field
removeData: function( params ){
var defaults = {
field: "data",
event: "data",
triggerFnName: "trigger",
triggerEvent: false,
immutableKeys: {} // key => true if immutable
};
params = $$.util.extend({}, defaults, params);
return function( names ){
var p = params;
var self = this;
var selfIsArrayLike = self.length !== undefined;
var all = selfIsArrayLike ? self : [self]; // put in array if not array-like
var single = selfIsArrayLike ? self[0] : self;
// .removeData("foo bar")
if( $$.is.string(names) ){ // then get the list of keys, and delete them
var keys = names.split(/\s+/);
var l = keys.length;
for( var i = 0; i < l; i++ ){ // delete each non-empty key
var key = keys[i];
if( $$.is.emptyString(key) ){ continue; }
var valid = !p.immutableKeys[ key ]; // not valid if immutable
if( valid ){
for( var i_a = 0, l_a = all.length; i_a < l_a; i_a++ ){
delete all[ i_a ]._private[ p.field ][ key ];
}
}
}
if( p.triggerEvent ){
self[ p.triggerFnName ]( p.event );
}
// .removeData()
} else if( names === undefined ){ // then delete all keys
for( var i_a = 0, l_a = all.length; i_a < l_a; i_a++ ){
var _privateFields = all[ i_a ]._private[ p.field ];
for( var key in _privateFields ){
var validKeyToDelete = !p.immutableKeys[ key ];
if( validKeyToDelete ){
delete _privateFields[ key ];
}
}
}
if( p.triggerEvent ){
self[ p.triggerFnName ]( p.event );
}
}
return self; // maintain chaining
}; // function
}, // removeData
// event function reusable stuff
event: {
regex: /(\w+)(\.\w+)?/, // regex for matching event strings (e.g. "click.namespace")
optionalTypeRegex: /(\w+)?(\.\w+)?/,
// properties to copy to the event obj
props: "altKey bubbles button cancelable charCode clientX clientY ctrlKey currentTarget data detail eventPhase metaKey offsetX offsetY originalTarget pageX pageY prevValue relatedTarget screenX screenY shiftKey target view which".split(/\s+/),
aliases: "mousedown mouseup click mouseover mouseout mousemove touchstart touchmove touchend grab drag free".split(/\s+/),
aliasesOn: function( thisPrototype ){
var aliases = $$.define.event.aliases;
for( var i = 0; i < aliases.length; i++ ){
var eventType = aliases[i];
(function(eventType){
thisPrototype[ eventType ] = function(data, callback){
if( $$.is.fn(callback) ){
this.on(eventType, data, callback);
} else if( $$.is.fn(data) ){
callback = data;
this.on(eventType, callback);
} else {
this.trigger(eventType);
}
return this; // maintain chaining
};
})( eventType );
}
},
falseCallback: function(){ return false; }
},
// event binding
on: function( params ){
var defaults = {
unbindSelfOnTrigger: false,
unbindAllBindersOnTrigger: false
};
params = $$.util.extend({}, defaults, params);
return function(events, selector, data, callback){
var self = this;
var selfIsArrayLike = self.length !== undefined;
var all = selfIsArrayLike ? self : [self]; // put in array if not array-like
var single = selfIsArrayLike ? self[0] : self;
var eventsIsString = $$.is.string(events);
var p = params;
if( $$.is.plainObject(selector) ){ // selector is actually data
callback = data;
data = selector;
selector = undefined;
} else if( $$.is.fn(selector) || selector === false ){ // selector is actually callback
callback = selector;
data = undefined;
selector = undefined;
}
if( $$.is.fn(data) || data === false ){ // data is actually callback
callback = data;
data = undefined;
}
// if there isn't a callback, we can't really do anything
// (can't speak for mapped events arg version)
if( !($$.is.fn(callback) || callback === false) && eventsIsString ){
return self; // maintain chaining
}
if( eventsIsString ){ // then convert to map
var map = {};
map[ events ] = callback;
events = map;
}
for( var evts in events ){
callback = events[evts];
if( callback === false ){
callback = $$.define.event.falseCallback;
}
if( !$$.is.fn(callback) ){ continue; }
evts = evts.split(/\s+/);
for( var i = 0; i < evts.length; i++ ){
var evt = evts[i];
if( $$.is.emptyString(evt) ){ continue; }
var match = evt.match( $$.define.event.regex ); // type[.namespace]
if( match ){
var type = match[1];
var namespace = match[2] ? match[2] : undefined;
var listener = {
callback: callback, // callback to run
data: data, // extra data in eventObj.data
delegated: selector ? true : false, // whether the evt is delegated
selector: selector, // the selector to match for delegated events
type: type, // the event type (e.g. "click")
namespace: namespace, // the event namespace (e.g. ".foo")
unbindSelfOnTrigger: p.unbindSelfOnTrigger,
unbindAllBindersOnTrigger: p.unbindAllBindersOnTrigger,
binders: all // who bound together
};
for( var j = 0; j < all.length; j++ ){
all[j]._private.listeners.push( listener );
}
}
} // for events array
} // for events map
return self; // maintain chaining
}; // function
}, // on
off: function( params ){
var defaults = {
};
params = $$.util.extend({}, defaults, params);
return function(events, selector, callback){
var self = this;
var selfIsArrayLike = self.length !== undefined;
var all = selfIsArrayLike ? self : [self]; // put in array if not array-like
var single = selfIsArrayLike ? self[0] : self;
var eventsIsString = $$.is.string(events);
var p = params;
if( arguments.length === 0 ){ // then unbind all
for( var i = 0; i < all.length; i++ ){
all[i]._private.listeners = [];
}
return self; // maintain chaining
}
if( $$.is.fn(selector) || selector === false ){ // selector is actually callback
callback = selector;
selector = undefined;
}
if( eventsIsString ){ // then convert to map
var map = {};
map[ events ] = callback;
events = map;
}
for( var evts in events ){
callback = events[evts];
if( callback === false ){
callback = $$.define.event.falseCallback;
}
evts = evts.split(/\s+/);
for( var h = 0; h < evts.length; h++ ){
var evt = evts[h];
if( $$.is.emptyString(evt) ){ continue; }
var match = evt.match( $$.define.event.optionalTypeRegex ); // [type][.namespace]
if( match ){
var type = match[1] ? match[1] : undefined;
var namespace = match[2] ? match[2] : undefined;
for( var i = 0; i < all.length; i++ ){ //
var listeners = all[i]._private.listeners;
for( var j = 0; j < listeners.length; j++ ){
var listener = listeners[j];
var nsMatches = !namespace || namespace === listener.namespace;
var typeMatches = !type || listener.type === type;
var cbMatches = !callback || callback === listener.callback;
var listenerMatches = nsMatches && typeMatches && cbMatches;
// delete listener if it matches
if( listenerMatches ){
listeners.splice(j, 1);
j--;
}
} // for listeners
} // for all
} // if match
} // for events array
} // for events map
return self; // maintain chaining
}; // function
}, // off
trigger: function( params ){
var defaults = {};
params = $$.util.extend({}, defaults, params);
return function(events, extraParams, fnToTrigger){
var self = this;
var selfIsArrayLike = self.length !== undefined;
var all = selfIsArrayLike ? self : [self]; // put in array if not array-like
var single = selfIsArrayLike ? self[0] : self;
var eventsIsString = $$.is.string(events);
var eventsIsObject = $$.is.plainObject(events);
var eventsIsEvent = $$.is.event(events);
var p = params;
var cy = this._private.cy || this;
if( eventsIsString ){ // then make a plain event object for each event name
var evts = events.split(/\s+/);
events = [];
for( var i = 0; i < evts.length; i++ ){
var evt = evts[i];
if( $$.is.emptyString(evt) ){ continue; }
var match = evt.match( $$.define.event.regex ); // type[.namespace]
var type = match[1];
var namespace = match[2] ? match[2] : undefined;
events.push( {
type: type,
namespace: namespace
} );
}
} else if( eventsIsObject ){ // put in length 1 array
var eventArgObj = events;
events = [ eventArgObj ];
}
if( extraParams ){
if( !$$.is.array(extraParams) ){ // make sure extra params are in an array if specified
extraParams = [ extraParams ];
}
} else { // otherwise, we've got nothing
extraParams = [];
}
for( var i = 0; i < events.length; i++ ){ // trigger each event in order
var evtObj = events[i];
for( var j = 0; j < all.length; j++ ){ // for each
var triggerer = all[j];
var listeners = triggerer._private.listeners;
var triggererIsElement = $$.is.element(triggerer);
var bubbleUp = triggererIsElement;
// create the event for this element from the event object
var evt;
if( eventsIsEvent ){ // then just get the object
evt = evtObj;
evt.cyTarget = evt.cyTarget || triggerer;
evt.cy = evt.cy || cy;
evt.namespace = evt.namespace || evtObj.namespace;
} else { // then we have to make one
evt = new $$.Event( evtObj, {
cyTarget: triggerer,
cy: cy,
namespace: evtObj.namespace
} );
// copy properties like jQuery does
var props = $$.define.event.props;
for( var k = 0; k < props.length; k++ ){
var prop = props[k];
evt[ prop ] = evtObj[ prop ];
}
}
if( fnToTrigger ){ // then override the listeners list with just the one we specified
listeners = [{
namespace: evt.namespace,
type: evt.type,
callback: fnToTrigger
}];
}
for( var k = 0; k < listeners.length; k++ ){ // check each listener
var lis = listeners[k];
var nsMatches = !lis.namespace || lis.namespace === evt.namespace;
var typeMatches = lis.type === evt.type;
var targetMatches = lis.delegated ? ( triggerer !== evt.cyTarget && $$.is.element(evt.cyTarget) && evt.cyTarget.is(lis.selector) ) : (true); // we're not going to validate the hierarchy; that's too expensive
var listenerMatches = nsMatches && typeMatches && targetMatches;
if( listenerMatches ){ // then trigger it
var args = [ evt ];
args = args.concat( extraParams ); // add extra params to args list
if( lis.data ){ // add on data plugged into binding
evt.data = lis.data;
} else { // or clear it in case the event obj is reused
evt.data = undefined;
}
if( lis.unbindSelfOnTrigger || lis.unbindAllBindersOnTrigger ){ // then remove listener
listeners.splice(k, 1);
k--;
}
if( lis.unbindAllBindersOnTrigger ){ // then delete the listener for all binders
var binders = lis.binders;
for( var l = 0; l < binders.length; l++ ){
var binder = binders[l];
if( !binder || binder === triggerer ){ continue; } // already handled triggerer or we can't handle it
var binderListeners = binder._private.listeners;
for( var m = 0; m < binderListeners.length; m++ ){
var binderListener = binderListeners[m];
if( binderListener === lis ){ // delete listener from list
binderListeners.splice(m, 1);
m--;
}
}
}
}
// run the callback
var context = lis.delegated ? evt.cyTarget : triggerer;
var ret = lis.callback.apply( context, args );
if( ret === false || evt.isPropagationStopped() ){
// then don't bubble
bubbleUp = false;
if( ret === false ){
// returning false is a shorthand for stopping propagation and preventing the def. action
evt.stopPropagation();
evt.preventDefault();
}
}
} // if listener matches
} // for each listener
// bubble up event for elements
if( bubbleUp ){
var parent = triggerer.parent();
var hasParent = parent.length !== 0;
if( hasParent ){ // then bubble up to parent
parent = parent[0];
parent.trigger(evt);
} else { // otherwise, bubble up to the core
cy.trigger(evt);
}
}
} // for each of all
} // for each event
return self; // maintain chaining
}; // function
} // trigger
}; // define
})( cytoscape );
;(function($$, window){
var isTouch = ('ontouchstart' in window) || window.DocumentTouch && document instanceof DocumentTouch;
$$.Style = function( cy ){
if( !(this instanceof $$.Style) ){
return new $$.Style(cy);
}
if( !$$.is.core(cy) ){
$$.util.error("A style must have a core reference");
return;
}
this._private = {
cy: cy,
coreStyle: {}
};
this.length = 0;
this.addDefaultStylesheet();
};
// nice-to-have aliases
$$.style = $$.Style;
$$.styfn = $$.Style.prototype;
// define functions in the Style prototype
$$.fn.style = function( fnMap, options ){
for( var fnName in fnMap ){
var fn = fnMap[ fnName ];
$$.Style.prototype = fn;
}
};
// a dummy stylesheet object that doesn't need a reference to the core
$$.stylesheet = $$.Stylesheet = function(){
if( !(this instanceof $$.Stylesheet) ){
return new $$.Stylesheet();
}
this.length = 0;
};
// just store the selector to be parsed later
$$.Stylesheet.prototype.selector = function( selector ){
var i = this.length++;
this[i] = {
selector: selector,
properties: []
};
return this; // chaining
};
// just store the property to be parsed later
$$.Stylesheet.prototype.css = function( name, value ){
var i = this.length - 1;
if( $$.is.string(name) ){
this[i].properties.push({
name: name,
value: value
});
} else if( $$.is.plainObject(name) ){
map = name;
for( var j = 0; j < $$.style.properties.length; j++ ){
var prop = $$.style.properties[j];
var mapVal = map[ prop.name ];
if( mapVal === undefined ){ // also try camel case name
mapVal = map[ $$.util.dash2camel(prop.name) ];
}
if( mapVal !== undefined ){
var name = prop.name;
var value = mapVal;
this[i].properties.push({
name: name,
value: value
});
}
}
}
return this; // chaining
};
// static function
$$.style.fromJson = function( cy, json ){
var style = new $$.Style(cy);
for( var i = 0; i < json.length; i++ ){
var context = json[i];
var selector = context.selector;
var props = context.css;
style.selector(selector); // apply selector
for( var name in props ){
var value = props[name];
style.css( name, value ); // apply property
}
}
return style;
};
$$.styfn.fromJson = function( json ){
var style = this;
style.resetToDefault();
for( var i = 0; i < json.length; i++ ){
var context = json[i];
var selector = context.selector;
var props = context.css;
style.selector(selector); // apply selector
for( var name in props ){
var value = props[name];
style.css( name, value ); // apply property
}
}
return style;
};
// get json from style api
$$.styfn.json = function(){
var json = [];
for( var i = 0; i < this.length; i++ ){
var cxt = this[i];
var selector = cxt.selector;
var props = cxt.properties;
var css = {};
for( var i = 0; i < props.length; i++ ){
css[ prop.name ] = prop.strValue;
}
json.push({
selector: selector.toString(),
css: css
});
}
return json;
};
// generate a real style object from the dummy stylesheet
$$.Stylesheet.prototype.generateStyle = function( cy ){
var style = new $$.Style(cy);
for( var i = 0; i < this.length; i++ ){
var context = this[i];
var selector = context.selector;
var props = context.properties;
style.selector(selector); // apply selector
for( var j = 0; j < props.length; j++ ){
var prop = props[j];
style.css( prop.name, prop.value ); // apply property
}
}
return style;
};
$$.Stylesheet.prototype.assignToStyle = function( style, addDefaultStylesheet ){
style.clear();
if( addDefaultStylesheet || addDefaultStylesheet === undefined ){
style.addDefaultStylesheet();
}
for( var i = 0; i < this.length; i++ ){
var context = this[i];
var selector = context.selector;
var props = context.properties;
style.selector(selector); // apply selector
for( var j = 0; j < props.length; j++ ){
var prop = props[j];
style.css( prop.name, prop.value ); // apply property
}
}
};
(function(){
var number = $$.util.regex.number;
var rgba = $$.util.regex.rgbaNoBackRefs;
var hsla = $$.util.regex.hslaNoBackRefs;
var hex3 = $$.util.regex.hex3;
var hex6 = $$.util.regex.hex6;
// each visual style property has a type and needs to be validated according to it
$$.style.types = {
zeroOneNumber: { number: true, min: 0, max: 1, unitless: true },
nonNegativeInt: { number: true, min: 0, integer: true, unitless: true },
size: { number: true, min: 0, enums: ["auto"] },
bgSize: { number: true, min: 0, allowPercent: true },
color: { color: true },
lineStyle: { enums: ["solid", "dotted", "dashed"] },
curveStyle: { enums: ["bundled", "bezier"] },
fontFamily: { regex: "^([\\w- ]+(?:\\s*,\\s*[\\w- ]+)*)$" },
fontVariant: { enums: ["small-caps", "normal"] },
fontStyle: { enums: ["italic", "normal", "oblique"] },
fontWeight: { enums: ["normal", "bold", "bolder", "lighter", "100", "200", "300", "400", "500", "600", "800", "900", 100, 200, 300, 400, 500, 600, 700, 800, 900] },
textDecoration: { enums: ["none", "underline", "overline", "line-through"] },
textTransform: { enums: ["none", "capitalize", "uppercase", "lowercase"] },
nodeShape: { enums: ["rectangle", "roundrectangle", "ellipse", "triangle",
"square", "pentagon", "hexagon", "heptagon", "octagon"] },
arrowShape: { enums: ["tee", "triangle", "square", "circle", "diamond", "none"] },
visibility: { enums: ["hidden", "visible"] },
valign: { enums: ["top", "center", "bottom"] },
halign: { enums: ["left", "center", "right"] },
positionx: { enums: ["left", "center", "right"], number: true, allowPercent: true },
positiony: { enums: ["top", "center", "bottom"], number: true, allowPercent: true },
bgRepeat: { enums: ["repeat", "repeat-x", "repeat-y", "no-repeat"] },
cursor: { enums: ["auto", "crosshair", "default", "e-resize", "n-resize", "ne-resize", "nw-resize", "pointer", "progress", "s-resize", "sw-resize", "text", "w-resize", "wait", "grab", "grabbing"] },
text: { string: true },
data: { mapping: true, regex: "^data\\s*\\(\\s*([\\w\\.]+)\\s*\\)$" },
mapData: { mapping: true, regex: "^mapData\\(([\\w\\.]+)\\s*\\,\\s*(" + number + ")\\s*\\,\\s*(" + number + ")\\s*,\\s*(" + number + "|\\w+|" + rgba + "|" + hsla + "|" + hex3 + "|" + hex6 + ")\\s*\\,\\s*(" + number + "|\\w+|" + rgba + "|" + hsla + "|" + hex3 + "|" + hex6 + ")\\)$" },
url: { regex: "^url\\s*\\(\\s*([^\\s]+)\\s*\\s*\\)|none|(.+)$" }
};
// define visual style properties
var t = $$.style.types;
$$.style.properties = [
// these are for elements
{ name: "cursor", type: t.cursor },
{ name: "text-valign", type: t.valign },
{ name: "text-halign", type: t.halign },
{ name: "color", type: t.color },
{ name: "content", type: t.text },
{ name: "text-outline-color", type: t.color },
{ name: "text-outline-width", type: t.size },
{ name: "text-outline-opacity", type: t.zeroOneNumber },
{ name: "text-opacity", type: t.zeroOneNumber },
{ name: "text-decoration", type: t.textDecoration },
{ name: "text-transform", type: t.textTransform },
{ name: "font-family", type: t.fontFamily },
{ name: "font-style", type: t.fontStyle },
{ name: "font-variant", type: t.fontVariant },
{ name: "font-weight", type: t.fontWeight },
{ name: "font-size", type: t.size },
{ name: "min-zoomed-font-size", type: t.size },
{ name: "visibility", type: t.visibility },
{ name: "opacity", type: t.zeroOneNumber },
{ name: "z-index", type: t.nonNegativeInt },
{ name: "overlay-padding", type: t.size },
{ name: "overlay-color", type: t.color },
{ name: "overlay-opacity", type: t.zeroOneNumber },
// these are just for nodes
{ name: "background-color", type: t.color },
{ name: "background-opacity", type: t.zeroOneNumber },
{ name: "background-image", type: t.url },
{ name: "background-position-x", type: t.positionx },
{ name: "background-position-y", type: t.positiony },
{ name: "background-repeat", type: t.bgRepeat },
{ name: "background-size-x", type: t.bgSize },
{ name: "background-size-y", type: t.bgSize },
{ name: "border-color", type: t.color },
{ name: "border-opacity", type: t.zeroOneNumber },
{ name: "border-width", type: t.size },
{ name: "border-style", type: t.lineStyle },
{ name: "height", type: t.size },
{ name: "width", type: t.size },
{ name: "padding-left", type: t.size },
{ name: "padding-right", type: t.size },
{ name: "padding-top", type: t.size },
{ name: "padding-bottom", type: t.size },
{ name: "shape", type: t.nodeShape },
// these are just for edges
{ name: "source-arrow-shape", type: t.arrowShape },
{ name: "target-arrow-shape", type: t.arrowShape },
{ name: "source-arrow-color", type: t.color },
{ name: "target-arrow-color", type: t.color },
{ name: "line-style", type: t.lineStyle },
{ name: "line-color", type: t.color },
{ name: "control-point-step-size", type: t.size },
{ name: "curve-style", type: t.curveStyle },
// these are just for the core
{ name: "selection-box-color", type: t.color },
{ name: "selection-box-opacity", type: t.zeroOneNumber },
{ name: "selection-box-border-color", type: t.color },
{ name: "selection-box-border-width", type: t.size },
{ name: "panning-cursor", type: t.cursor },
{ name: "active-bg-color", type: t.color },
{ name: "active-bg-opacity", type: t.zeroOneNumber },
{ name: "active-bg-size", type: t.size }
];
// allow access of properties by name ( e.g. $$.style.properties.height )
var props = $$.style.properties;
for( var i = 0; i < props.length; i++ ){
var prop = props[i];
props[ prop.name ] = prop; // allow lookup by name
}
})();
// adds the default stylesheet to the current style
$$.styfn.addDefaultStylesheet = function(){
// to be nice, we build font related style properties from the core container
// so that cytoscape matches the style of its container by default
//
// unfortunately, this doesn't seem work consistently and can grab the default stylesheet values
// instead of the developer's values so let's just make it explicit for the dev for now
//
// delaying the read of these val's is not an opt'n: that would delay init'l load time
var fontFamily = "Helvetica" || this.containerPropertyAsString("font-family") || "sans-serif";
var fontStyle = "normal" || this.containerPropertyAsString("font-style") || "normal";
var fontVariant = "normal" || this.containerPropertyAsString("font-variant") || "normal";
var fontWeight = "normal" || this.containerPropertyAsString("font-weight") || "normal";
var color = "#000" || this.containerPropertyAsString("color") || "#000";
var textTransform = "none" || this.containerPropertyAsString("text-transform") || "none";
var textDecoration = "none" || this.containerPropertyAsString("text-decoration") || "none";
var fontSize = 16 || this.containerPropertyAsString("font-size") || 16;
// fill the style with the default stylesheet
this
.selector("node, edge") // common properties
.css({
"cursor": "default",
"text-valign": "top",
"text-halign": "center",
"color": color,
"content": undefined, // => no label
"text-outline-color": "#000",
"text-outline-width": 0,
"text-outline-opacity": 1,
"text-opacity": 1,
"text-decoration": "none",
"text-transform": textTransform,
"font-family": fontFamily,
"font-style": fontStyle,
"font-variant": fontVariant,
"font-weight": fontWeight,
"font-size": fontSize,
"min-zoomed-font-size": 0,
"visibility": "visible",
"opacity": 1,
"z-index": 0,
"content": "",
"overlay-opacity": 0,
"overlay-color": "#000",
"overlay-padding": 10,
// node props
"background-color": "#888",
"background-opacity": 1,
"background-image": "none",
"border-color": "#000",
"border-opacity": 1,
"border-width": 0,
"border-style": "solid",
"height": 30,
"width": 30,
"padding-top": 0,
"padding-bottom": 0,
"padding-left": 0,
"padding-right": 0,
"shape": "ellipse",
// edge props
"source-arrow-shape": "none",
"target-arrow-shape": "none",
"source-arrow-color": "#bbb",
"target-arrow-color": "#bbb",
"line-style": "solid",
"line-color": "#bbb",
"control-point-step-size": 40,
"curve-style": "bezier"
})
.selector("$node > node") // compound (parent) node properties
.css({
"width": "auto",
"height": "auto",
"shape": "rectangle",
"background-opacity": 0.5,
"padding-top": 10,
"padding-right": 10,
"padding-left": 10,
"padding-bottom": 10
})
.selector("edge") // just edge properties
.css({
"width": 1,
})
.selector(":active")
.css({
"overlay-color": "black",
"overlay-padding": 10,
"overlay-opacity": 0.25
})
.selector("core") // just core properties
.css({
"selection-box-color": "#ddd",
"selection-box-opacity": 0.65,
"selection-box-border-color": "#aaa",
"selection-box-border-width": 1,
"panning-cursor": "grabbing",
"active-bg-color": "black",
"active-bg-opacity": 0.15,
"active-bg-size": isTouch ? 40 : 15
})
;
};
// remove all contexts
$$.styfn.clear = function(){
this._private.newStyle = true;
for( var i = 0; i < this.length; i++ ){
delete this[i];
}
this.length = 0;
return this; // chaining
};
$$.styfn.resetToDefault = function(){
this.clear();
this.addDefaultStylesheet();
return this;
};
// builds a style object for the "core" selector
$$.styfn.core = function(){
return this._private.coreStyle;
};
// parse a property; return null on invalid; return parsed property otherwise
// fields :
// - name : the name of the property
// - value : the parsed, native-typed value of the property
// - strValue : a string value that represents the property value in valid css
// - bypass : true iff the property is a bypass property
$$.styfn.parse = function( name, value, propIsBypass ){
name = $$.util.camel2dash( name ); // make sure the property name is in dash form (e.g. "property-name" not "propertyName")
var property = $$.style.properties[ name ];
var passedValue = value;
if( !property ){ return null; } // return null on property of unknown name
if( value === undefined || value === null ){ return null; } // can't assign null
var valueIsString = $$.is.string(value);
if( valueIsString ){ // trim the value to make parsing easier
value = $$.util.trim( value );
}
var type = property.type;
if( !type ){ return null; } // no type, no luck
// check if bypass is null or empty string (i.e. indication to delete bypass property)
if( propIsBypass && (value === "" || value === null) ){
return {
name: name,
value: value,
bypass: true,
deleteBypass: true
};
}
// check if value is mapped
var data, mapData;
if( !valueIsString ){
// then don't bother to do the expensive regex checks
} else if( data = new RegExp( $$.style.types.data.regex ).exec( value ) ){
return {
name: name,
value: data,
strValue: value,
mapped: $$.style.types.data,
field: data[1],
bypass: propIsBypass
};
} else if( mapData = new RegExp( $$.style.types.mapData.regex ).exec( value ) ){
// we can map only if the type is a colour or a number
if( !(type.color || type.number) ){ return false; }
var valueMin = this.parse( name, mapData[4]); // parse to validate
if( !valueMin || valueMin.mapped ){ return false; } // can't be invalid or mapped
var valueMax = this.parse( name, mapData[5]); // parse to validate
if( !valueMax || valueMax.mapped ){ return false; } // can't be invalid or mapped
// check if valueMin and valueMax are the same
if( valueMin.value === valueMax.value ){
return false; // can't make much of a mapper without a range
} else if( type.color ){
var c1 = valueMin.value;
var c2 = valueMax.value;
var same = c1[0] === c2[0] // red
&& c1[1] === c2[1] // green
&& c1[2] === c2[2] // blue
&& ( // optional alpha
c1[3] === c2[3] // same alpha outright
|| (
(c1[3] == null || c1[3] === 1) // full opacity for colour 1?
&&
(c2[3] == null || c2[3] === 1) // full opacity for colour 2?
)
)
;
if( same ){ return false; } // can't make a mapper without a range
}
return {
name: name,
value: mapData,
strValue: value,
mapped: $$.style.types.mapData,
field: mapData[1],
fieldMin: parseFloat( mapData[2] ), // min & max are numeric
fieldMax: parseFloat( mapData[3] ),
valueMin: valueMin.value,
valueMax: valueMax.value,
bypass: propIsBypass
};
}
// TODO check if value is inherited (i.e. "inherit")
// check the type and return the appropriate object
if( type.number ){
var units;
if( !type.unitless ){
if( valueIsString ){
var match = value.match( "^(" + $$.util.regex.number + ")(px|em" + (type.allowPercent ? "|\\%" : "") + ")?" + "$" );
if( !type.enums ){
if( !match ){ return null; } // no match => not a number
value = match[1];
units = match[2] || "px";
}
} else {
units = "px"; // implicitly px if unspecified
}
}
value = parseFloat( value );
// check if this number type also accepts special keywords in place of numbers
// (i.e. `left`, `auto`, etc)
if( isNaN(value) && type.enums !== undefined ){
value = passedValue;
for( var i = 0; i < type.enums.length; i++ ){
var en = type.enums[i];
if( en === value ){
return {
name: name,
value: value,
strValue: value,
bypass: propIsBypass
};
}
}
return null; // failed on enum after failing on number
}
// check if value must be an integer
if( type.integer && !$$.is.integer(value) ){
return null;
}
// check value is within range
if( (type.min !== undefined && value < type.min)
|| (type.max !== undefined && value > type.max)
){
return null;
}
var ret = {
name: name,
value: value,
strValue: "" + value + (units ? units : ""),
units: units,
bypass: propIsBypass,
pxValue: type.unitless || units === "%" ?
undefined
:
( units === "px" || !units ? (value) : (this.getEmSizeInPixels() * value) )
};
return ret;
} else if( type.color ){
var tuple = $$.util.color2tuple( value );
return {
name: name,
value: tuple,
strValue: value,
bypass: propIsBypass
};
} else if( type.enums ){
for( var i = 0; i < type.enums.length; i++ ){
var en = type.enums[i];
if( en === value ){
return {
name: name,
value: value,
strValue: value,
bypass: propIsBypass
};
}
}
} else if( type.regex ){
var regex = new RegExp( type.regex ); // make a regex from the type
var m = regex.exec( value );
if( m ){ // regex matches
return {
name: name,
value: m,
strValue: value,
bypass: propIsBypass
};
} else { // regex doesn't match
return null; // didn't match the regex so the value is bogus
}
} else if( type.string ){
// just return
return {
name: name,
value: value,
strValue: value,
bypass: propIsBypass
};
} else {
return null; // not a type we can handle
}
};
// gets what an em size corresponds to in pixels relative to a dom element
$$.styfn.getEmSizeInPixels = function(){
var cy = this._private.cy;
var domElement = cy.container();
if( window && domElement && window.getComputedStyle ){
var pxAsStr = window.getComputedStyle(domElement).getPropertyValue("font-size");
var px = parseFloat( pxAsStr );
return px;
} else {
return 1; // in case we're running outside of the browser
}
};
// gets css property from the core container
$$.styfn.containerCss = function( propName ){
var cy = this._private.cy;
var domElement = cy.container();
if( window && domElement && window.getComputedStyle ){
return window.getComputedStyle(domElement).getPropertyValue( propName );
}
};
$$.styfn.containerProperty = function( propName ){
var propStr = this.containerCss( propName );
var prop = this.parse( propName, propStr );
return prop;
};
$$.styfn.containerPropertyAsString = function( propName ){
var prop = this.containerProperty( propName );
if( prop ){
return prop.strValue;
}
};
// create a new context from the specified selector string and switch to that context
$$.styfn.selector = function( selectorStr ){
// "core" is a special case and does not need a selector
var selector = selectorStr === "core" ? null : new $$.Selector( selectorStr );
var i = this.length++; // new context means new index
this[i] = {
selector: selector,
properties: []
};
return this; // chaining
};
// add one or many css rules to the current context
$$.styfn.css = function(){
var args = arguments;
switch( args.length ){
case 1:
var map = args[0];
for( var i = 0; i < $$.style.properties.length; i++ ){
var prop = $$.style.properties[i];
var mapVal = map[ prop.name ];
if( mapVal === undefined ){
mapVal = map[ $$.util.dash2camel(prop.name) ];
}
if( mapVal !== undefined ){
this.cssRule( prop.name, mapVal );
}
}
break;
case 2:
this.cssRule( args[0], args[1] );
break;
default:
break; // do nothing if args are invalid
}
return this; // chaining
};
// add a single css rule to the current context
$$.styfn.cssRule = function( name, value ){
// name-value pair
var property = this.parse( name, value );
// add property to current context if valid
if( property ){
var i = this.length - 1;
this[i].properties.push( property );
// add to core style if necessary
var currentSelectorIsCore = !this[i].selector;
if( currentSelectorIsCore ){
this._private.coreStyle[ property.name ] = property;
}
}
return this; // chaining
};
// apply a property to the style (for internal use)
// returns whether application was successful
//
// now, this function flattens the property, and here's how:
//
// for parsedProp:{ bypass: true, deleteBypass: true }
// no property is generated, instead the bypass property in the
// element's style is replaced by what's pointed to by the `bypassed`
// field in the bypass property (i.e. restoring the property the
// bypass was overriding)
//
// for parsedProp:{ mapped: truthy }
// the generated flattenedProp:{ mapping: prop }
//
// for parsedProp:{ bypass: true }
// the generated flattenedProp:{ bypassed: parsedProp }
$$.styfn.applyParsedProperty = function( ele, parsedProp, context ){
parsedProp = $$.util.clone( parsedProp ); // copy b/c the same parsedProp may be applied to many elements, BUT
// the instances put in each element should be unique to avoid overwriting other the lists of other elements
var prop = parsedProp;
var style = ele._private.style;
var fieldVal, flatProp;
var type = $$.style.properties[ prop.name ].type;
var propIsBypass = prop.bypass;
var origProp = style[ prop.name ];
var origPropIsBypass = origProp && origProp.bypass;
// can't apply auto to width or height unless it's a parent node
if( (parsedProp.name === "height" || parsedProp.name === "width") && parsedProp.value === "auto" && ele.isNode() && !ele.isParent() ){
return false;
}
// check if we need to delete the current bypass
if( propIsBypass && prop.deleteBypass ){ // then this property is just here to indicate we need to delete
var currentProp = style[ prop.name ];
// can only delete if the current prop is a bypass and it points to the property it was overriding
if( !currentProp ){
return true; // property is already not defined
} else if( currentProp.bypass && currentProp.bypassed ){ // then replace the bypass property with the original
// because the bypassed property was already applied (and therefore parsed), we can just replace it (no reapplying necessary)
style[ prop.name ] = currentProp.bypassed;
return true;
} else {
return false; // we're unsuccessful deleting the bypass
}
}
// put the property in the style objects
switch( prop.mapped ){ // flatten the property if mapped
case $$.style.types.mapData:
fieldVal = ele._private.data[ prop.field ];
if( !$$.is.number(fieldVal) ){ return false; } // it had better be a number
var percent = (fieldVal - prop.fieldMin) / (prop.fieldMax - prop.fieldMin);
if( type.color ){
var r1 = prop.valueMin[0];
var r2 = prop.valueMax[0];
var g1 = prop.valueMin[1];
var g2 = prop.valueMax[1];
var b1 = prop.valueMin[2];
var b2 = prop.valueMax[2];
var a1 = prop.valueMin[3] == null ? 1 : prop.valueMin[3];
var a2 = prop.valueMax[3] == null ? 1 : prop.valueMax[3];
var clr = [
Math.round( r1 + (r2 - r1)*percent ),
Math.round( g1 + (g2 - g1)*percent ),
Math.round( b1 + (b2 - b1)*percent ),
Math.round( a1 + (a2 - a1)*percent )
];
flatProp = { // colours are simple, so just create the flat property instead of expensive string parsing
bypass: prop.bypass, // we're a bypass if the mapping property is a bypass
name: prop.name,
value: clr,
strValue: [ "rgba(", clr[0], ", ", clr[1], ", ", clr[2], ", ", clr[3] , ")" ].join("") // fake it til you make it
};
} else if( type.number ){
var calcValue = prop.valueMin + (prop.valueMax - prop.valueMin) * percent;
flatProp = this.parse( prop.name, calcValue, prop.bypass );
} else {
return false; // can only map to colours and numbers
}
if( !flatProp ){ // if we can't flatten the property, then use the origProp so we still keep the mapping itself
flatProp = this.parse( prop.name, origProp.strValue, prop.bypass);
}
flatProp.mapping = prop; // keep a reference to the mapping
prop = flatProp; // the flattened (mapped) property is the one we want
break;
case $$.style.types.data: // direct mapping
fieldVal = eval('ele._private.data.' + prop.field );
flatProp = this.parse( prop.name, fieldVal, prop.bypass );
if( !flatProp ){ // if we can't flatten the property, then use the origProp so we still keep the mapping itself
flatProp = this.parse( prop.name, origProp.strValue, prop.bypass);
}
flatProp.mapping = prop; // keep a reference to the mapping
prop = flatProp; // the flattened (mapped) property is the one we want
break;
case undefined:
break; // just set the property
default:
return false; // danger, will robinson
}
// if the property is a bypass property, then link the resultant property to the original one
if( propIsBypass ){
if( origPropIsBypass ){ // then this bypass overrides the existing one
prop.bypassed = origProp.bypassed; // steal bypassed prop from old bypass
} else { // then link the orig prop to the new bypass
prop.bypassed = origProp;
}
style[ prop.name ] = prop; // and set
} else { // prop is not bypass
var prevProp;
if( origPropIsBypass ){ // then keep the orig prop (since it's a bypass) and link to the new prop
prevProp = origProp.bypassed;
origProp.bypassed = prop;
} else { // then just replace the old prop with the new one
prevProp = style[ prop.name ];
style[ prop.name ] = prop;
}
if( prevProp && prevProp.mapping && prop.mapping && prevProp.context === context ){
prevProp = prevProp.prev;
}
if( prevProp && prevProp !== prop ){
prop.prev = prevProp;
}
}
prop.context = context;
return true;
};
$$.styfn.rollBackContext = function( ele, context ){
for( var j = 0; j < context.properties.length; j++ ){ // for each prop
var prop = context.properties[j];
var eleProp = ele._private.style[ prop.name ];
// because bypasses do not store prevs, look at the bypassed property
if( eleProp.bypassed ){
eleProp = eleProp.bypassed;
}
var first = true;
var lastEleProp;
var l = 0;
while( eleProp.prev ){
var prev = eleProp.prev;
if( eleProp.context === context ){
if( first ){
ele._private.style[ prop.name ] = prev;
} else if( lastEleProp ){
lastEleProp.prev = prev;
}
}
lastEleProp = eleProp;
eleProp = prev;
first = false;
l++;
// in case we have a problematic prev list
// if( l >= 100 ){
// debugger;
// }
}
}
};
// (potentially expensive calculation)
// apply the style to the element based on
// - its bypass
// - what selectors match it
$$.styfn.apply = function( eles ){
var self = this;
for( var ie = 0; ie < eles.length; ie++ ){
var ele = eles[ie];
if( self._private.newStyle ){
ele._private.styleCxts = [];
ele._private.style = {};
}
// apply the styles
for( var i = 0; i < this.length; i++ ){
var context = this[i];
var contextSelectorMatches = context.selector && context.selector.filter( ele ).length > 0; // NB: context.selector may be null for "core"
var props = context.properties;
if( contextSelectorMatches ){ // then apply its properties
// apply the properties in the context
for( var j = 0; j < props.length; j++ ){ // for each prop
var prop = props[j];
//if(prop.mapped) debugger;
if( !ele._private.styleCxts[i] || prop.mapped ){
this.applyParsedProperty( ele, prop, context );
}
}
// keep a note that this context matches
ele._private.styleCxts[i] = context;
} else {
// roll back style cxts that don't match now
if( ele._private.styleCxts[i] ){
this.rollBackContext( ele, context );
}
delete ele._private.styleCxts[i];
}
} // for context
} // for elements
self._private.newStyle = false;
};
// updates the visual style for all elements (useful for manual style modification after init)
$$.styfn.update = function(){
var cy = this._private.cy;
var eles = cy.elements();
eles.updateStyle();
};
// gets the rendered style for an element
$$.styfn.getRenderedStyle = function( ele ){
var ele = ele[0]; // insure it's an element
if( ele ){
var rstyle = {};
var style = ele._private.style;
var cy = this._private.cy;
var zoom = cy.zoom();
for( var i = 0; i < $$.style.properties.length; i++ ){
var prop = $$.style.properties[i];
var styleProp = style[ prop.name ];
if( styleProp ){
var val = styleProp.unitless ? styleProp.strValue : (styleProp.pxValue * zoom) + "px";
rstyle[ prop.name ] = val;
rstyle[ $$.util.dash2camel(prop.name) ] = val;
}
}
return rstyle;
}
};
// gets the raw style for an element
$$.styfn.getRawStyle = function( ele ){
var ele = ele[0]; // insure it's an element
if( ele ){
var rstyle = {};
var style = ele._private.style;
for( var i = 0; i < $$.style.properties.length; i++ ){
var prop = $$.style.properties[i];
var styleProp = style[ prop.name ];
if( styleProp ){
rstyle[ prop.name ] = styleProp.strValue;
rstyle[ $$.util.dash2camel(prop.name) ] = styleProp.strValue;
}
}
return rstyle;
}
};
// gets the value style for an element (useful for things like animations)
$$.styfn.getValueStyle = function( ele ){
var rstyle, style;
if( $$.is.element(ele) ){
rstyle = {};
style = ele._private.style;
} else {
rstyle = {};
style = ele; // just passed the style itself
}
if( style ){
for( var i = 0; i < $$.style.properties.length; i++ ){
var prop = $$.style.properties[i];
var styleProp = style[ prop.name ] || style[ $$.util.dash2camel(prop.name) ];
if( styleProp !== undefined && !$$.is.plainObject( styleProp ) ){ // then make a prop of it
styleProp = this.parse(prop.name, styleProp);
}
if( styleProp ){
var val = styleProp.value === undefined ? styleProp : styleProp.value;
rstyle[ prop.name ] = val;
rstyle[ $$.util.dash2camel(prop.name) ] = val;
}
}
}
return rstyle;
};
// just update the functional properties (i.e. mappings) in the elements'
// styles (less expensive than recalculation)
$$.styfn.updateFunctionalProperties = function( eles ){
for( var i = 0; i < eles.length; i++ ){ // for each ele
var ele = eles[i];
var style = ele._private.style;
for( var j = 0; j < $$.style.properties.length; j++ ){ // for each prop
var prop = $$.style.properties[j];
var propInStyle = style[ prop.name ];
if( propInStyle && propInStyle.mapping ){
var mapping = propInStyle.mapping;
this.applyParsedProperty( ele, mapping ); // reapply the mapping property
}
}
}
};
// bypasses are applied to an existing style on an element, and just tacked on temporarily
// returns true iff application was successful for at least 1 specified property
$$.styfn.applyBypass = function( eles, name, value ){
var props = [];
// put all the properties (can specify one or many) in an array after parsing them
if( name === "*" || name === "**" ){ // apply to all property names
if( value !== undefined ){
for( var i = 0; i < $$.style.properties.length; i++ ){
var prop = $$.style.properties[i];
var name = prop.name;
var parsedProp = this.parse(name, value, true);
if( parsedProp ){
props.push( parsedProp );
}
}
}
} else if( $$.is.string(name) ){ // then parse the single property
var parsedProp = this.parse(name, value, true);
if( parsedProp ){
props.push( parsedProp );
}
} else if( $$.is.plainObject(name) ){ // then parse each property
var specifiedProps = name;
for( var i = 0; i < $$.style.properties.length; i++ ){
var prop = $$.style.properties[i];
var name = prop.name;
var value = specifiedProps[ name ];
if( value === undefined ){ // try camel case name too
value = specifiedProps[ $$.util.dash2camel(name) ];
}
if( value !== undefined ){
var parsedProp = this.parse(name, value, true);
if( parsedProp ){
props.push( parsedProp );
}
}
}
} else { // can't do anything without well defined properties
return false;
}
// we've failed if there are no valid properties
if( props.length === 0 ){ return false; }
// now, apply the bypass properties on the elements
var ret = false; // return true if at least one succesful bypass applied
for( var i = 0; i < eles.length; i++ ){ // for each ele
var ele = eles[i];
for( var j = 0; j < props.length; j++ ){ // for each prop
var prop = props[j];
ret = this.applyParsedProperty( ele, prop ) || ret;
}
}
return ret;
};
$$.styfn.removeAllBypasses = function( eles ){
for( var i = 0; i < $$.style.properties.length; i++ ){
var prop = $$.style.properties[i];
var name = prop.name;
var value = ""; // empty => remove bypass
var parsedProp = this.parse(name, value, true);
for( var j = 0; j < eles.length; j++ ){
var ele = eles[j];
this.applyParsedProperty(ele, parsedProp);
}
}
};
})( cytoscape, typeof window === 'undefined' ? null : window );
;(function($$){
var defaults = {
showOverlay: true,
hideEdgesOnViewport: false
};
var origDefaults = $$.util.copy( defaults );
$$.defaults = function( opts ){
defaults = $$.util.extend({}, origDefaults, opts);
};
$$.fn.core = function( fnMap, options ){
for( var name in fnMap ){
var fn = fnMap[name];
$$.Core.prototype[ name ] = fn;
}
};
$$.Core = function( opts ){
if( !(this instanceof $$.Core) ){
return new $$.Core(opts);
}
var cy = this;
opts = $$.util.extend({}, defaults, opts);
var container = opts.container;
var reg = $$.getRegistrationForInstance(cy, container);
if( reg && reg.cy ){
reg.domElement.innerHTML = '';
reg.cy.notify({ type: 'destroy' }); // destroy the renderer
$$.removeRegistrationForInstance(reg.cy, reg.domElement);
}
reg = $$.registerInstance( cy, container );
var readies = reg.readies;
var options = opts;
options.layout = $$.util.extend( { name: typeof window === 'undefined' ? "null" : "grid" }, options.layout );
options.renderer = $$.util.extend( { name: typeof window === 'undefined' ? "null" : "canvas" }, options.renderer );
// TODO determine whether we need a check like this even though we allow running headless now
//
// if( !$$.is.domElement(options.container) ){
// $$.util.error("Cytoscape.js must be called on an element");
// return;
// }
this._private = {
ready: false, // whether ready has been triggered
instanceId: reg.id, // the registered instance id
options: options, // cached options
elements: [], // array of elements
id2index: {}, // element id => index in elements array
listeners: [], // list of listeners
aniEles: [], // array of elements being animated
scratch: {}, // scratch object for core
layout: null,
renderer: null,
notificationsEnabled: true, // whether notifications are sent to the renderer
minZoom: 1e-50,
maxZoom: 1e50,
zoomEnabled: options.zoomEnabled === undefined ? true : options.zoomEnabled,
panEnabled: options.panEnabled === undefined ? true : options.panEnabled,
boxSelectionEnabled: options.boxSelectionEnabled === undefined ? true : options.boxSelectionEnabled,
zoom: $$.is.number(options.zoom) ? options.zoom : 1,
pan: {
x: $$.is.plainObject(options.pan) && $$.is.number(options.pan.x) ? options.pan.x : 0,
y: $$.is.plainObject(options.pan) && $$.is.number(options.pan.y) ? options.pan.y : 0,
},
hasCompoundNodes: false
};
// init zoom bounds
if( $$.is.number(options.minZoom) && $$.is.number(options.maxZoom) && options.minZoom < options.maxZoom ){
this._private.minZoom = options.minZoom;
this._private.maxZoom = options.maxZoom;
} else if( $$.is.number(options.minZoom) && options.maxZoom === undefined ){
this._private.minZoom = options.minZoom;
} else if( $$.is.number(options.maxZoom) && options.minZoom === undefined ){
this._private.maxZoom = options.maxZoom;
}
// init style
this._private.style = $$.is.stylesheet(options.style) ? options.style.generateStyle(this) : ( $$.is.array(options.style) ? $$.style.fromJson(this, options.style) : new $$.Style( cy ) );
cy.initRenderer( $$.util.extend({
showOverlay: options.showOverlay,
hideEdgesOnViewport: options.hideEdgesOnViewport
}, options.renderer) );
if( options.initrender ){
cy.on('initrender', options.initrender);
}
// initial load
cy.load(options.elements, function(){ // onready
cy.startAnimationLoop();
cy._private.ready = true;
// if a ready callback is specified as an option, the bind it
if( $$.is.fn( options.ready ) ){
cy.bind("ready", options.ready);
}
// bind all the ready handlers registered before creating this instance
for( var i = 0; i < readies.length; i++ ){
var fn = readies[i];
cy.bind("ready", fn);
}
reg.readies = []; // clear b/c we've bound them all and don't want to keep it around in case a new core uses the same div etc
cy.trigger("ready");
}, options.done);
};
$$.corefn = $$.Core.prototype; // short alias
$$.fn.core({
ready: function(){
return this._private.ready;
},
registered: function(){
if( this._private && this._private.instanceId != null ){
return true;
} else {
return false;
}
},
registeredId: function(){
return this._private.instanceId;
},
getElementById: function( id ){
var index = this._private.id2index[ id ];
if( index !== undefined ){
return this._private.elements[ index ];
}
// worst case, return an empty collection
return new $$.Collection( this );
},
hasCompoundNodes: function(){
return this._private.hasCompoundNodes;
},
addToPool: function( eles ){
var elements = this._private.elements;
var id2index = this._private.id2index;
for( var i = 0; i < eles.length; i++ ){
var ele = eles[i];
var id = ele._private.data.id;
var index = id2index[ id ];
var alreadyInPool = index !== undefined;
if( !alreadyInPool ){
index = elements.length;
elements.push( ele )
id2index[ id ] = index;
ele._private.index = index;
}
}
return this; // chaining
},
removeFromPool: function( eles ){
var elements = this._private.elements;
var id2index = this._private.id2index;
for( var i = 0; i < eles.length; i++ ){
var ele = eles[i];
var id = ele._private.data.id;
var index = id2index[ id ];
var inPool = index !== undefined;
if( inPool ){
delete this._private.id2index[ id ];
elements.splice(index, 1);
// adjust the index of all elements past this index
for( var j = index; j < elements.length; j++ ){
var jid = elements[j]._private.data.id;
id2index[ jid ]--;
}
}
}
},
container: function(){
return this._private.options.container;
},
options: function(){
return $$.util.copy( this._private.options );
},
json: function(params){
var json = {};
var cy = this;
json.elements = {};
cy.elements().each(function(i, ele){
var group = ele.group();
if( !json.elements[group] ){
json.elements[group] = [];
}
json.elements[group].push( ele.json() );
});
json.style = cy.style();
json.scratch = cy.scratch();
json.zoomEnabled = cy._private.zoomEnabled;
json.panEnabled = cy._private.panEnabled;
json.layout = cy._private.options.layout;
json.renderer = cy._private.options.renderer;
return json;
}
});
})( cytoscape );
(function($$, window){
$$.fn.core({
add: function(opts){
var elements;
var cy = this;
// add the elements
if( $$.is.elementOrCollection(opts) ){
var eles = opts;
if( eles._private.cy === cy ){ // same instance => just restore
elements = eles.restore();
} else { // otherwise, copy from json
var jsons = [];
for( var i = 0; i < eles.length; i++ ){
var ele = eles[i];
jsons.push( ele.json() );
}
elements = new $$.Collection( cy, jsons );
}
}
// specify an array of options
else if( $$.is.array(opts) ){
var jsons = opts;
elements = new $$.Collection(cy, jsons);
}
// specify via opts.nodes and opts.edges
else if( $$.is.plainObject(opts) && ($$.is.array(opts.nodes) || $$.is.array(opts.edges)) ){
var elesByGroup = opts;
var jsons = [];
var grs = ["nodes", "edges"];
for( var i = 0, il = grs.length; i < il; i++ ){
var group = grs[i];
var elesArray = elesByGroup[group];
if( $$.is.array(elesArray) ){
for( var j = 0, jl = elesArray.length; j < jl; j++ ){
var json = elesArray[j];
var mjson = $$.util.extend({}, json, { group: group });
jsons.push( mjson );
}
}
}
elements = new $$.Collection(cy, jsons);
}
// specify options for one element
else {
var json = opts;
elements = (new $$.Element( cy, json )).collection();
}
return elements;
},
remove: function(collection){
if( $$.is.elementOrCollection(collection) ){
collection = collection;
} else if( $$.is.string(collection) ){
var selector = collection;
collection = this.$( selector );
}
return collection.remove();
},
load: function(elements, onload, ondone){
var cy = this;
// remove old elements
var oldEles = cy.elements();
if( oldEles.length > 0 ){
oldEles.remove();
}
cy.notifications(false);
var processedElements = [];
if( elements != null ){
if( $$.is.plainObject(elements) || $$.is.array(elements) ){
cy.add( elements );
}
}
function callback(){
cy.one("layoutready", function(e){
cy.notifications(true);
cy.trigger(e); // we missed this event by turning notifications off, so pass it on
cy.notify({
type: "load",
collection: cy.elements(),
style: cy._private.style
});
cy.one("load", onload);
cy.trigger("load");
}).one("layoutstop", function(){
cy.one("done", ondone);
cy.trigger("done");
});
cy.layout( cy._private.options.layout );
}
if( window ){
function ready(f) {
var fn = ( document && (document.readyState === 'interactive' || document.readyState === 'complete') ) ? f : ready;
setTimeout(fn, 9, f);
}
ready( callback );
} else {
callback();
}
return this;
}
});
})( cytoscape, typeof window === 'undefined' ? null : window );
;(function($$){
$$.fn.core({
addToAnimationPool: function( eles ){
var cy = this;
var aniEles = cy._private.aniEles;
var aniElesHas = [];
for( var i = 0; i < aniEles.length; i++ ){
var id = aniEles[i]._private.data.id;
aniElesHas[ id ] = true;
}
for( var i = 0; i < eles.length; i++ ){
var ele = eles[i];
var id = ele._private.data.id;
if( !aniElesHas[id] ){
aniEles.push( ele );
}
}
},
startAnimationLoop: function(){
var cy = this;
var stepDelay = 1000/60;
var useTimeout = false;
var useRequestAnimationFrame = true;
// initialise the list
cy._private.aniEles = [];
// TODO change this when standardised
var requestAnimationFrame = typeof window === 'undefined' ? function(){} : ( window.requestAnimationFrame || window.mozRequestAnimationFrame ||
window.webkitRequestAnimationFrame || window.msRequestAnimationFrame );
if( requestAnimationFrame == null || !useRequestAnimationFrame ){
requestAnimationFrame = function(fn){
window.setTimeout(function(){
fn(+new Date);
}, stepDelay);
};
}
var containerDom = cy.container();
function globalAnimationStep(){
function exec(){
requestAnimationFrame(function(now){
handleElements(now);
globalAnimationStep();
}, containerDom);
}
if( useTimeout ){
setTimeout(function(){
exec();
}, stepDelay);
} else {
exec();
}
}
globalAnimationStep(); // first call
function handleElements(now){
now = +new Date;
var eles = cy._private.aniEles;
for( var e = 0; e < eles.length; e++ ){
var ele = eles[e];
// we might have errors if we edit animation.queue and animation.current
// for ele (i.e. by stopping)
// try{
var current = ele._private.animation.current;
var queue = ele._private.animation.queue;
// if nothing currently animating, get something from the queue
if( current.length === 0 ){
var q = queue;
var next = q.length > 0 ? q.shift() : null;
if( next != null ){
next.callTime = +new Date; // was queued, so update call time
current.push( next );
}
}
// step and remove if done
var completes = [];
for(var i = 0; i < current.length; i++){
var ani = current[i];
step( ele, ani, now );
if( current[i].done ){
completes.push( ani );
// remove current[i]
current.splice(i, 1);
i--;
}
}
// call complete callbacks
for( var i = 0; i < completes.length; i++ ){
var ani = completes[i];
var complete = ani.params.complete;
if( $$.is.fn(complete) ){
complete.apply( ele, [ now ] );
}
}
// } catch(e){
// // do nothing
// }
} // each element
// notify renderer
if( eles.length > 0 ){
cy.notify({
type: "draw",
collection: eles
});
}
// remove elements from list of currently animating if its queues are empty
for( var i = 0; i < eles.length; i++ ){
var ele = eles[i];
var queue = ele._private.animation.queue;
var current = ele._private.animation.current;
var keepEle = current.length > 0 || queue.length > 0;
if( !keepEle ){ // then remove from the array
eles.splice(i, 1);
i--;
}
}
} // handleElements
function step( self, animation, now ){
var style = cy._private.style;
var properties = animation.properties;
var params = animation.params;
var startTime = animation.callTime;
var percent;
if( animation.duration === 0 ){
percent = 1;
} else {
percent = Math.min(1, (now - startTime)/animation.duration);
}
if( percent < 0 ){
percent = 0;
} else if( percent > 1 ){
percent = 1;
}
if( properties.delay == null ){ // then update the position
var startPos = animation.startPosition;
var endPos = properties.position;
var pos = self._private.position;
if( endPos ){
if( valid( startPos.x, endPos.x ) ){
pos.x = ease( startPos.x, endPos.x, percent );
}
if( valid( startPos.y, endPos.y ) ){
pos.y = ease( startPos.y, endPos.y, percent );
}
}
if( properties.css ){
var props = $$.style.properties;
for( var i = 0; i < props.length; i++ ){
var name = props[i].name;
var end = properties.css[ name ];
if( end !== undefined ){
var start = animation.startStyle[ name ];
var easedVal = ease( start, end, percent );
style.applyBypass( self, name, easedVal );
}
} // for props
} // if
}
if( $$.is.fn(params.step) ){
params.step.apply( self, [ now ] );
}
if( percent >= 1 ){
animation.done = true;
}
return percent;
}
function valid(start, end){
if( start == null || end == null ){
return false;
}
if( $$.is.number(start) && $$.is.number(end) ){
return true;
} else if( (start) && (end) ){
return true;
}
return false;
}
function ease(start, end, percent){
if( percent < 0 ){
percent = 0;
} else if( percent > 1 ){
percent = 1;
}
if( $$.is.number(start) && $$.is.number(end) ){
return start + (end - start) * percent;
} else if( $$.is.number(start[0]) && $$.is.number(end[0]) ){ // then assume a colour
var c1 = start;
var c2 = end;
function ch(ch1, ch2){
var diff = ch2 - ch1;
var min = ch1;
return Math.round( percent * diff + min );
}
var r = ch( c1[0], c2[0] );
var g = ch( c1[1], c2[1] );
var b = ch( c1[2], c2[2] );
return 'rgb(' + r + ', ' + g + ', ' + b + ')';
}
return undefined;
}
}
});
})( cytoscape );
;(function($$){
$$.fn.core({
data: $$.define.data({
field: "data",
bindingEvent: "data",
allowBinding: true,
allowSetting: true,
settingEvent: "data",
settingTriggersEvent: true,
triggerFnName: "trigger",
allowGetting: true
}),
removeData: $$.define.removeData({
field: "data",
event: "data",
triggerFnName: "trigger",
triggerEvent: true
}),
batchData: $$.define.batchData({
field: "data",
event: "data",
triggerFnName: "trigger",
immutableKeys: {
"id": true,
"source": true,
"target": true,
"parent": true
},
updateMappers: true
}),
scratch: $$.define.data({
field: "scratch",
allowBinding: false,
allowSetting: true,
settingTriggersEvent: false,
allowGetting: true
}),
removeScratch: $$.define.removeData({
field: "scratch",
triggerEvent: false
}),
});
})( cytoscape );
;(function($$){
$$.fn.core({
on: $$.define.on(), // .on( events [, selector] [, data], handler)
one: $$.define.on({ unbindSelfOnTrigger: true }),
once: $$.define.on({ unbindAllBindersOnTrigger: true }),
off: $$.define.off(), // .off( events [, selector] [, handler] )
trigger: $$.define.trigger(), // .trigger( events [, extraParams] )
});
// aliases for those folks who like old stuff:
$$.corefn.bind = $$.corefn.on;
$$.corefn.unbind = $$.corefn.off;
// add event aliases like .click()
$$.define.event.aliasesOn( $$.corefn );
})( cytoscape );
;(function($$){
$$.fn.core({
png: function(){
var cy = this;
var renderer = this._private.renderer;
return renderer.png();
}
});
})( cytoscape );
;(function($$){
$$.fn.core({
layout: function( params ){
var cy = this;
if( this._private.layoutRunning ){ // don't run another layout if one's already going
return this;
}
// if no params, use the previous ones
if( params == null ){
params = this._private.options.layout;
}
this.initLayout( params );
cy.trigger("layoutstart");
this._private.layoutRunning = true;
this.one('layoutstop', function(){
this._private.layoutRunning = false;
});
this._private.layout.run();
return this;
},
initLayout: function( options ){
if( options == null ){
$$.util.error("Layout options must be specified to run a layout");
return;
}
if( options.name == null ){
$$.util.error("A `name` must be specified to run a layout");
return;
}
var name = options.name;
var layoutProto = $$.extension("layout", name);
if( layoutProto == null ){
$$.util.error("Can not apply layout: No such layout `%s` found; did you include its JS file?", name);
return;
}
this._private.layout = new layoutProto( $$.util.extend({}, options, {
renderer: this._private.renderer,
cy: this
}) );
this._private.options.layout = options; // save options
}
});
})( cytoscape );
(function($$){
$$.fn.core({
notify: function( params ){
if( !this._private.notificationsEnabled ){ return; } // exit on disabled
var renderer = this.renderer();
var cy = this;
// normalise params.collection
if( $$.is.element(params.collection) ){ // make collection from element
var element = params.collection;
params.collection = new $$.Collection(cy, [ element ]);
} else if( $$.is.array(params.collection) ){ // make collection from elements array
var elements = params.collection;
params.collection = new $$.Collection(cy, elements);
}
renderer.notify(params);
},
notifications: function( bool ){
var p = this._private;
if( bool === undefined ){
return p.notificationsEnabled;
} else {
p.notificationsEnabled = bool ? true : false;
}
},
noNotifications: function( callback ){
this.notifications(false);
callback();
this.notifications(true);
}
});
})( cytoscape );
;(function($$){
$$.fn.core({
renderTo: function( context, zoom, pan ){
var r = this._private.renderer;
r.renderTo( context, zoom, pan );
},
renderer: function(){
return this._private.renderer;
},
initRenderer: function( options ){
var cy = this;
var rendererProto = $$.extension("renderer", options.name);
if( rendererProto == null ){
$$.util.error("Can not initialise: No such renderer `%s` found; did you include its JS file?", options.name);
return;
}
this._private.renderer = new rendererProto(
$$.util.extend({}, options, {
cy: cy,
style: cy._private.style
})
);
}
});
})( cytoscape );
;(function($$){
$$.fn.core({
// get a collection
// - empty collection on no args
// - collection of elements in the graph on selector arg
// - guarantee a returned collection when elements or collection specified
collection: function( eles ){
if( $$.is.string(eles) ){
return this.$( eles );
} else if( $$.is.elementOrCollection(eles) ){
return eles.collection();
}
return new $$.Collection( this );
},
nodes: function( selector ){
var nodes = this.$("node");
if( selector ){
return nodes.filter( selector );
}
return nodes;
},
edges: function( selector ){
var edges = this.$("edge");
if( selector ){
return edges.filter( selector );
}
return edges;
},
// search the graph like jQuery
$: function( selector ){
var eles = new $$.Collection( this, this._private.elements );
if( selector ){
return eles.filter( selector );
}
return eles;
}
});
// aliases
$$.corefn.elements = $$.corefn.filter = $$.corefn.$;
})( cytoscape );
;(function($$){
$$.fn.core({
style: function(val){
return this._private.style;
}
});
})( cytoscape );
;(function($$){
$$.fn.core({
panningEnabled: function( bool ){
if( bool !== undefined ){
this._private.panEnabled = bool ? true : false;
} else {
return this._private.panEnabled;
}
return this; // chaining
},
zoomingEnabled: function( bool ){
if( bool !== undefined ){
this._private.zoomEnabled = bool ? true : false;
} else {
return this._private.zoomEnabled;
}
return this; // chaining
},
boxSelectionEnabled: function( bool ){
if( bool !== undefined ){
this._private.boxSelectionEnabled = bool ? true : false;
} else {
return this._private.boxSelectionEnabled;
}
return this; // chaining
},
pan: function(){
var args = arguments;
var pan = this._private.pan;
var dim, val, dims, x, y;
switch( args.length ){
case 0: // .pan()
return pan;
case 1:
if( !this._private.panEnabled ){
return this;
} else if( $$.is.string( args[0] ) ){ // .pan("x")
dim = args[0];
return pan[ dim ];
} else if( $$.is.plainObject( args[0] ) ) { // .pan({ x: 0, y: 100 })
dims = args[0];
x = dims.x;
y = dims.y;
if( $$.is.number(x) ){
pan.x = x;
}
if( $$.is.number(y) ){
pan.y = y;
}
this.trigger("pan");
}
break;
case 2: // .pan("x", 100)
if( !this._private.panEnabled ){
return this;
}
dim = args[0];
val = args[1];
if( (dim === "x" || dim === "y") && $$.is.number(val) ){
pan[dim] = val;
}
this.trigger("pan");
break;
default:
break; // invalid
}
this.notify({ // notify the renderer that the viewport changed
type: "viewport"
});
return this; // chaining
},
panBy: function(params){
var args = arguments;
var pan = this._private.pan;
var dim, val, dims, x, y;
if( !this._private.panEnabled ){
return this;
}
switch( args.length ){
case 1:
if( $$.is.plainObject( args[0] ) ) { // .panBy({ x: 0, y: 100 })
dims = args[0];
x = dims.x;
y = dims.y;
if( $$.is.number(x) ){
pan.x += x;
}
if( $$.is.number(y) ){
pan.y += y;
}
this.trigger("pan");
}
break;
case 2: // .panBy("x", 100)
dim = args[0];
val = args[1];
if( (dim === "x" || dim === "y") && $$.is.number(val) ){
pan[dim] += val;
}
this.trigger("pan");
break;
default:
break; // invalid
}
this.notify({ // notify the renderer that the viewport changed
type: "viewport"
});
return this; // chaining
},
fit: function( elements, padding ){
if( $$.is.number(elements) && padding === undefined ){ // elements is optional
padding = elements;
elements = undefined;
}
if( !this._private.panEnabled || !this._private.zoomEnabled ){
return this;
}
if( $$.is.string(elements) ){
var sel = elements;
elements = this.$( sel );
} else if( !$$.is.elementOrCollection(elements) ){
elements = this.elements();
}
var bb = elements.boundingBox();
var style = this.style();
var w = parseFloat( style.containerCss("width") );
var h = parseFloat( style.containerCss("height") );
var zoom;
padding = $$.is.number(padding) ? padding : 0;
if( !isNaN(w) && !isNaN(h) ){
zoom = this._private.zoom = Math.min( (w - 2*padding)/bb.w, (h - 2*padding)/bb.h );
// crop zoom
zoom = zoom > this._private.maxZoom ? this._private.maxZoom : zoom;
zoom = zoom < this._private.minZoom ? this._private.minZoom : zoom;
this._private.pan = { // now pan to middle
x: (w - zoom*( bb.x1 + bb.x2 ))/2,
y: (h - zoom*( bb.y1 + bb.y2 ))/2
};
}
this.trigger("pan zoom");
this.notify({ // notify the renderer that the viewport changed
type: "viewport"
});
return this; // chaining
},
minZoom: function( zoom ){
if( zoom === undefined ){
return this._private.minZoom;
} else if( $$.is.number(zoom) ){
this._private.minZoom = zoom;
}
return this;
},
maxZoom: function( zoom ){
if( zoom === undefined ){
return this._private.maxZoom;
} else if( $$.is.number(zoom) ){
this._private.maxZoom = zoom;
}
return this;
},
zoom: function( params ){
var pos;
var zoom;
if( params === undefined ){ // then get the zoom
return this._private.zoom;
} else if( $$.is.number(params) ){ // then set the zoom
zoom = params;
pos = {
x: 0,
y: 0
};
} else if( $$.is.plainObject(params) ){ // then zoom about a point
zoom = params.level;
if( params.renderedPosition ){
var rpos = params.renderedPosition;
var p = this._private.pan;
var z = this._private.zoom;
pos = {
x: (rpos.x - p.x)/z,
y: (rpos.y - p.y)/z
};
} else if( params.position ){
pos = params.position;
}
if( pos && !this._private.panEnabled ){
return this; // panning disabled
}
}
if( !this._private.zoomEnabled ){
return this; // zooming disabled
}
if( !$$.is.number(zoom) || !$$.is.number(pos.x) || !$$.is.number(pos.y) ){
return this; // can't zoom with invalid params
}
// crop zoom
zoom = zoom > this._private.maxZoom ? this._private.maxZoom : zoom;
zoom = zoom < this._private.minZoom ? this._private.minZoom : zoom;
var pan1 = this._private.pan;
var zoom1 = this._private.zoom;
var zoom2 = zoom;
var pan2 = {
x: -zoom2/zoom1 * (pos.x - pan1.x) + pos.x,
y: -zoom2/zoom1 * (pos.y - pan1.y) + pos.y
};
this._private.zoom = zoom;
this._private.pan = pan2;
var posChanged = pan1.x !== pan2.x || pan1.y !== pan2.y;
this.trigger("zoom" + (posChanged ? " pan" : "") );
this.notify({ // notify the renderer that the viewport changed
type: "viewport"
});
return this; // chaining
},
// get the bounding box of the elements (in raw model position)
boundingBox: function( selector ){
var eles = this.$( selector );
return eles.boundingBox();
},
center: function(elements){
if( !this._private.panEnabled || !this._private.zoomEnabled ){
return this;
}
if( $$.is.string(elements) ){
var selector = elements;
elements = cy.elements( selector );
} else if( !$$.is.elementOrCollection(elements) ){
elements = cy.elements();
}
var bb = elements.boundingBox();
var style = this.style();
var w = parseFloat( style.containerCss("width") );
var h = parseFloat( style.containerCss("height") );
var zoom = this._private.zoom;
this.pan({ // now pan to middle
x: (w - zoom*( bb.x1 + bb.x2 ))/2,
y: (h - zoom*( bb.y1 + bb.y2 ))/2
});
this.trigger("pan");
this.notify({ // notify the renderer that the viewport changed
type: "viewport"
});
return this; // chaining
},
reset: function(){
if( !this._private.panEnabled || !this._private.zoomEnabled ){
return this;
}
this.pan({ x: 0, y: 0 });
if( this._private.maxZoom > 1 && this._private.minZoom < 1 ){
this.zoom(1);
}
this.notify({ // notify the renderer that the viewport changed
type: "viewport"
});
return this; // chaining
}
});
})( cytoscape );
;(function($$){
// Use this interface to define functions for collections/elements.
// This interface is good, because it forces you to think in terms
// of the collections case (more than 1 element), so we don't need
// notification blocking nonsense everywhere.
//
// Other collection-*.js files depend on this being defined first.
// It's a trade off: It simplifies the code for Collection and
// Element integration so much that it's worth it to create the
// JS dependency.
//
// Having this integration guarantees that we can call any
// collection function on an element and vice versa.
// e.g. $$.fn.collection({ someFunc: function(){ /* ... */ } })
$$.fn.collection = $$.fn.eles = function( fnMap, options ){
for( var name in fnMap ){
var fn = fnMap[name];
$$.Collection.prototype[ name ] = fn;
}
};
// factory for generating edge ids when no id is specified for a new element
var idFactory = {
prefix: {
nodes: "n",
edges: "e"
},
id: {
nodes: 0,
edges: 0
},
generate: function(cy, element, tryThisId){
var json = $$.is.element( element ) ? element._private : element;
var group = json.group;
var id = tryThisId != null ? tryThisId : this.prefix[group] + this.id[group];
if( cy.getElementById(id).empty() ){
this.id[group]++; // we've used the current id, so move it up
} else { // otherwise keep trying successive unused ids
while( !cy.getElementById(id).empty() ){
id = this.prefix[group] + ( ++this.id[group] );
}
}
return id;
}
};
// Element
////////////////////////////////////////////////////////////////////////////////////////////////////
// represents a node or an edge
$$.Element = function(cy, params, restore){
if( !(this instanceof $$.Element) ){
return new $$.Element(cy, params, restore);
}
var self = this;
restore = (restore === undefined || restore ? true : false);
if( cy === undefined || params === undefined || !$$.is.core(cy) ){
$$.util.error("An element must have a core reference and parameters set");
return;
}
// validate group
if( params.group !== "nodes" && params.group !== "edges" ){
$$.util.error("An element must be of type `nodes` or `edges`; you specified `" + params.group + "`");
return;
}
// make the element array-like, just like a collection
this.length = 1;
this[0] = this;
// NOTE: when something is added here, add also to ele.json()
this._private = {
cy: cy,
single: true, // indicates this is an element
data: params.data || {}, // data object
position: params.position || {}, // fields x, y, etc (could be 3d or radial coords; renderer decides)
autoWidth: undefined, // width and height of nodes calculated by the renderer when set to special "auto" value
autoHeight: undefined,
listeners: [], // array of bound listeners
group: params.group, // string; "nodes" or "edges"
style: {}, // properties as set by the style
rstyle: {}, // properties for style sent from the renderer to the core
styleCxts: [], // applied style contexts from the styler
removed: true, // whether it's inside the vis; true if removed (set true here since we call restore)
selected: params.selected ? true : false, // whether it's selected
selectable: params.selectable === undefined ? true : ( params.selectable ? true : false ), // whether it's selectable
locked: params.locked ? true : false, // whether the element is locked (cannot be moved)
grabbed: false, // whether the element is grabbed by the mouse; renderer sets this privately
grabbable: params.grabbable === undefined ? true : ( params.grabbable ? true : false ), // whether the element can be grabbed
active: false, // whether the element is active from user interaction
classes: {}, // map ( className => true )
animation: { // object for currently-running animations
current: [],
queue: []
},
rscratch: {}, // object in which the renderer can store information
scratch: {}, // scratch objects
edges: [], // array of connected edges
children: [] // array of children
};
// renderedPosition overrides if specified
if( params.renderedPosition ){
var rpos = params.renderedPosition;
var pan = cy.pan();
var zoom = cy.zoom();
this._private.position = {
x: (rpos.x - pan.x)/zoom,
y: (rpos.y - pan.y)/zoom
};
}
if( $$.is.string(params.classes) ){
var classes = params.classes.split(/\s+/);
for( var i = 0, l = classes.length; i < l; i++ ){
var cls = classes[i];
if( !cls || cls === "" ){ continue; }
self._private.classes[cls] = true;
}
}
if( restore === undefined || restore ){
this.restore();
}
};
// Collection
////////////////////////////////////////////////////////////////////////////////////////////////////
// represents a set of nodes, edges, or both together
$$.Collection = function(cy, elements){
if( !(this instanceof $$.Collection) ){
return new $$.Collection(cy, elements);
}
if( cy === undefined || !$$.is.core(cy) ){
$$.util.error("A collection must have a reference to the core");
return;
}
var ids = {};
var uniqueElements = [];
var createdElements = false;
if( !elements ){
elements = [];
} else if( elements.length > 0 && $$.is.plainObject( elements[0] ) && !$$.is.element( elements[0] ) ){
createdElements = true;
// make elements from json and restore all at once later
var eles = [];
var elesIds = {};
for( var i = 0, l = elements.length; i < l; i++ ){
var json = elements[i];
if( json.data == null ){
json.data = {};
}
var data = json.data;
// make sure newly created elements have valid ids
if( data.id == null ){
data.id = idFactory.generate( cy, json );
} else if( cy.getElementById( data.id ).length != 0 || elesIds[ data.id ] ){
continue; // can't create element
}
var ele = new $$.Element( cy, json, false );
eles.push( ele );
elesIds[ data.id ] = true;
}
elements = eles;
}
for( var i = 0, l = elements.length; i < l; i++ ){
var element = elements[i];
if( !element ){ continue; }
var id = element._private.data.id;
if( !ids[ id ] ){
ids[ id ] = element;
uniqueElements.push( element );
}
}
for(var i = 0, l = uniqueElements.length; i < l; i++){
this[i] = uniqueElements[i];
}
this.length = uniqueElements.length;
this._private = {
cy: cy,
ids: ids
};
// restore the elements if we created them from json
if( createdElements ){
this.restore();
}
};
// Functions
////////////////////////////////////////////////////////////////////////////////////////////////////
// keep the prototypes in sync (an element has the same functions as a collection)
// and use $$.elefn and $$.elesfn as shorthands to the prototypes
$$.elefn = $$.elesfn = $$.Element.prototype = $$.Collection.prototype;
$$.elesfn.cy = function(){
return this._private.cy;
};
$$.elesfn.element = function(){
return this[0];
};
$$.elesfn.collection = function(){
if( $$.is.collection(this) ){
return this;
} else { // an element
return new $$.Collection( this._private.cy, [this] );
}
};
$$.elesfn.json = function(){
var ele = this.element();
if( ele == null ){ return undefined }
var p = ele._private;
var json = $$.util.copy({
data: p.data,
position: p.position,
group: p.group,
bypass: p.bypass,
removed: p.removed,
selected: p.selected,
selectable: p.selectable,
locked: p.locked,
grabbed: p.grabbed,
grabbable: p.grabbable,
classes: ""
});
var classes = [];
for( var cls in p.classes ){
classes.push(cls);
}
for( var i = 0; i < classes.length; i++ ){
var cls = classes[i];
json.classes += cls + ( i < classes.length - 1 ? " " : "" );
}
return json;
};
$$.elesfn.restore = function( notifyRenderer ){
var self = this;
var restored = [];
var cy = self.cy();
if( notifyRenderer === undefined ){
notifyRenderer = true;
}
// create arrays of nodes and edges, since we need to
// restore the nodes first
var elements = [];
var nodes = [], edges = [];
var numNodes = 0;
var numEdges = 0;
for( var i = 0, l = self.length; i < l; i++ ){
var ele = self[i];
// keep nodes first in the array and edges after
if( ele.isNode() ){ // put to front of array if node
nodes.push( ele );
numNodes++;
} else { // put to end of array if edge
edges.push( ele );
numEdges++;
}
}
elements = nodes.concat( edges );
// now, restore each element
for( var i = 0, l = elements.length; i < l; i++ ){
var ele = elements[i];
if( !ele.removed() ){
// don't need to do anything
continue;
}
var _private = ele._private;
var data = _private.data;
// set id and validate
if( data.id === undefined ){
data.id = idFactory.generate( cy, ele );
} else if( $$.is.emptyString(data.id) || !$$.is.string(data.id) ){
// can't create element if it has empty string as id or non-string id
continue;
} else if( cy.getElementById( data.id ).length != 0 ){
// can't create element if one already has that id
continue;
}
var id = data.id; // id is finalised, now let's keep a ref
if( ele.isEdge() ){ // extra checks for edges
var edge = ele;
var fields = ["source", "target"];
var fieldsLength = fields.length;
for(var j = 0; j < fieldsLength; j++){
var field = fields[j];
var val = data[field];
if( val == null || val === "" ){
// can't create if source or target is not defined properly
continue;
} else if( cy.getElementById(val).empty() ){
// can't create edge if one of its nodes doesn't exist
continue;
}
}
var src = cy.getElementById( data.source );
var tgt = cy.getElementById( data.target );
src._private.edges.push( edge );
tgt._private.edges.push( edge );
} // if is edge
// create mock ids map for element so it can be used like collections
_private.ids = {};
_private.ids[ data.id ] = ele;
_private.removed = false;
cy.addToPool( ele );
restored.push( ele );
} // for each element
// do compound node sanity checks
for( var i = 0; i < numNodes; i++ ){ // each node
var node = elements[i];
var data = node._private.data;
var id = data.id;
var parentId = node._private.data.parent;
var specifiedParent = parentId != null;
if( specifiedParent ){
var parent = cy.getElementById( parentId );
if( parent.empty() ){
// non-existant parent; just remove it
delete data.parent;
} else {
var selfAsParent = false;
var ancestor = parent;
while( !ancestor.empty() ){
if( node.same(ancestor) ){
// mark self as parent and remove from data
selfAsParent = true;
delete data.parent; // remove parent reference
// exit or we loop forever
break;
}
ancestor = ancestor.parent();
}
if( !selfAsParent ){
// connect with children
parent[0]._private.children.push( node );
// let the core know we have a compound graph
cy._private.hasCompoundNodes = true;
}
} // else
} // if specified parent
} // for each node
restored = new $$.Collection( cy, restored );
if( restored.length > 0 ){
var toUpdateStyle = restored.add( restored.connectedNodes() ).add( restored.parent() );
toUpdateStyle.updateStyle( notifyRenderer );
if( notifyRenderer ){
restored.rtrigger("add");
} else {
restored.trigger("add");
}
}
return self; // chainability
};
$$.elesfn.removed = function(){
var ele = this[0];
return ele && ele._private.removed;
};
$$.elesfn.inside = function(){
var ele = this[0];
return ele && !ele._private.removed;
};
$$.elesfn.remove = function( notifyRenderer ){
var self = this;
var removed = [];
var elesToRemove = [];
var elesToRemoveIds = {};
var cy = self._private.cy;
if( notifyRenderer === undefined ){
notifyRenderer = true;
}
// add connected edges
function addConnectedEdges(node){
var edges = node._private.edges;
for( var i = 0; i < edges.length; i++ ){
add( edges[i] );
}
}
// add descendant nodes
function addChildren(node){
var children = node._private.children;
for( var i = 0; i < children.length; i++ ){
add( children[i] );
}
}
function add( ele ){
var alreadyAdded = elesToRemoveIds[ ele.id() ];
if( alreadyAdded ){
return;
} else {
elesToRemoveIds[ ele.id() ] = true;
}
if( ele.isNode() ){
elesToRemove.push( ele ); // nodes are removed last
addConnectedEdges( ele );
addChildren( ele );
} else {
elesToRemove.unshift( ele ); // edges are removed first
}
}
// make the list of elements to remove
// (may be removing more than specified due to connected edges etc)
for( var i = 0, l = self.length; i < l; i++ ){
var ele = self[i];
add( ele );
}
function removeEdgeRef(node, edge){
var connectedEdges = node._private.edges;
for( var j = 0; j < connectedEdges.length; j++ ){
var connectedEdge = connectedEdges[j];
if( edge === connectedEdge ){
connectedEdges.splice( j, 1 );
break;
}
}
}
function removeChildRef(parent, ele){
ele = ele[0];
parent = parent[0];
var children = parent._private.children;
for( var j = 0; j < children.length; j++ ){
if( children[j][0] === ele[0] ){
children.splice(j, 1);
break;
}
}
}
for( var i = 0; i < elesToRemove.length; i++ ){
var ele = elesToRemove[i];
// mark as removed
ele._private.removed = true;
// remove from core pool
cy.removeFromPool( ele );
// add to list of removed elements
removed.push( ele );
if( ele.isEdge() ){ // remove references to this edge in its connected nodes
var src = ele.source()[0];
var tgt = ele.target()[0];
removeEdgeRef( src, ele );
removeEdgeRef( tgt, ele );
} else { // remove reference to parent
var parent = ele.parent();
if( parent.length !== 0 ){
removeChildRef(parent, ele);
}
}
}
// check to see if we have a compound graph or not
var elesStillInside = cy._private.elements;
cy._private.hasCompoundNodes = false;
for( var i = 0; i < elesStillInside.length; i++ ){
var ele = elesStillInside[i];
if( ele.isParent() ){
cy._private.hasCompoundNodes = true;
break;
}
}
var removedElements = new $$.Collection( this.cy(), removed );
if( removedElements.size() > 0 ){
// must manually notify since trigger won't do this automatically once removed
if( notifyRenderer ){
this.cy().notify({
type: "remove",
collection: removedElements
});
}
removedElements.trigger("remove");
}
// check for empty remaining parent nodes
var checkedParentId = {};
for( var i = 0; i < elesToRemove.length; i++ ){
var ele = elesToRemove[i];
var isNode = ele._private.group === "nodes";
var parentId = ele._private.data.parent;
if( isNode && parentId !== undefined && !checkedParentId[ parentId ] ){
checkedParentId[ parentId ] = true;
var parent = cy.getElementById( parentId );
if( parent && parent.length !== 0 && !parent._private.removed && parent.children().length === 0 ){
parent.updateStyle();
}
}
}
return this;
};
})( cytoscape );
;(function( $$ ){
$$.fn.eles({
animated: function(){
var ele = this[0];
if( ele ){
return ele._private.animation.current.length > 0;
}
},
clearQueue: function(){
for( var i = 0; i < this.length; i++ ){
var ele = this[i];
ele._private.animation.queue = [];
}
return this;
},
delay: function( time, complete ){
this.animate({
delay: time
}, {
duration: time,
complete: complete
});
return this;
},
animate: function( properties, params ){
var callTime = +new Date;
var cy = this._private.cy;
var style = cy.style();
var q;
if( params === undefined ){
params = {};
}
if( params.duration === undefined ){
params.duration = 400;
}
switch( params.duration ){
case "slow":
params.duration = 600;
break;
case "fast":
params.duration = 200;
break;
}
if( properties == null || (properties.position == null && properties.css == null && properties.delay == null) ){
return this; // nothing to animate
}
if( properties.css ){
properties.css = style.getValueStyle( properties.css );
}
for( var i = 0; i < this.length; i++ ){
var self = this[i];
var pos = self._private.position;
var startPosition = {
x: pos.x,
y: pos.y
};
var startStyle = style.getValueStyle( self );
if( self.animated() && (params.queue === undefined || params.queue) ){
q = self._private.animation.queue;
} else {
q = self._private.animation.current;
}
q.push({
properties: properties,
duration: params.duration,
params: params,
callTime: callTime,
startPosition: startPosition,
startStyle: startStyle
});
}
cy.addToAnimationPool( this );
return this; // chaining
}, // animate
stop: function(clearQueue, jumpToEnd){
for( var i = 0; i < this.length; i++ ){
var self = this[i];
var anis = self._private.animation.current;
for( var j = 0; j < anis.length; j++ ){
var animation = anis[j];
if( jumpToEnd ){
// next iteration of the animation loop, the animation
// will go straight to the end and be removed
animation.duration = 0;
}
}
// clear the queue of future animations
if( clearQueue ){
self._private.animation.queue = [];
}
}
// we have to notify (the animation loop doesn't do it for us on `stop`)
this.cy().notify({
collection: this,
type: "draw"
});
return this;
}
});
})( cytoscape );
;(function( $$ ){
$$.fn.eles({
addClass: function(classes){
classes = classes.split(/\s+/);
var self = this;
var changed = [];
for( var i = 0; i < classes.length; i++ ){
var cls = classes[i];
if( $$.is.emptyString(cls) ){ continue; }
for( var j = 0; j < self.length; j++ ){
var ele = self[j];
var hasClass = ele._private.classes[cls];
ele._private.classes[cls] = true;
if( !hasClass ){ // if didn't already have, add to list of changed
changed.push( ele );
}
}
}
// trigger update style on those eles that had class changes
if( changed.length > 0 ){
new $$.Collection(this._private.cy, changed).updateStyle();
}
self.trigger("class");
return self;
},
hasClass: function(className){
var ele = this[0];
return ele != null && ele._private.classes[className];
},
toggleClass: function(classesStr, toggle){
var classes = classesStr.split(/\s+/);
var self = this;
var changed = []; // eles who had classes changed
for( var i = 0, il = self.length; i < il; i++ ){
var ele = self[i];
for( var j = 0; j < classes.length; j++ ){
var cls = classes[j];
if( $$.is.emptyString(cls) ){ continue; }
var hasClass = ele._private.classes[cls];
var shouldAdd = toggle || (toggle === undefined && !hasClass);
if( shouldAdd ){
ele._private.classes[cls] = true;
if( !hasClass ){ changed.push(ele); }
} else { // then remove
ele._private.classes[cls] = false;
if( hasClass ){ changed.push(ele); }
}
} // for j classes
} // for i eles
// trigger update style on those eles that had class changes
if( changed.length > 0 ){
new $$.Collection(this._private.cy, changed).updateStyle();
}
self.trigger("class");
return self;
},
removeClass: function(classes){
classes = classes.split(/\s+/);
var self = this;
var changed = [];
for( var i = 0; i < self.length; i++ ){
var ele = self[i];
for( var j = 0; j < classes.length; j++ ){
var cls = classes[j];
if( !cls || cls === "" ){ continue; }
var hasClass = ele._private.classes[cls];
delete ele._private.classes[cls];
if( hasClass ){ // then we changed its set of classes
changed.push( ele );
}
}
}
// trigger update style on those eles that had class changes
if( changed.length > 0 ){
new $$.Collection(self._private.cy, changed).updateStyle();
}
self.trigger("class");
return self;
}
});
})( cytoscape );
;(function($$){
$$.fn.eles({
allAre: function(selector){
return this.filter(selector).length === this.length;
},
is: function(selector){
return this.filter(selector).length > 0;
},
same: function( collection ){
collection = this.cy().collection( collection );
// cheap extra check
if( this.length !== collection.length ){
return false;
}
return this.intersect( collection ).length === this.length;
},
anySame: function(collection){
collection = this.cy().collection( collection );
return this.intersect( collection ).length > 0;
},
allAreNeighbors: function(collection){
collection = this.cy().collection( collection );
return this.neighborhood().intersect( collection ).length === collection.length;
}
});
})( cytoscape );
;(function($$){
var borderWidthMultiplier = 1.4;
var borderWidthAdjustment = 1;
$$.fn.eles({
// fully updates (recalculates) the style for the elements
updateStyle: function( notifyRenderer ){
var cy = this._private.cy;
var style = cy.style();
notifyRenderer = notifyRenderer || notifyRenderer === undefined ? true : false;
style.apply( this );
if( notifyRenderer ){
this.rtrigger("style"); // let renderer know we changed style
} else {
this.trigger("style"); // just fire the event
}
return this; // chaining
},
// just update the mappers in the elements' styles; cheaper than eles.updateStyle()
updateMappers: function( notifyRenderer ){
var cy = this._private.cy;
var style = cy.style();
notifyRenderer = notifyRenderer || notifyRenderer === undefined ? true : false;
for( var i = 0; i < this.length; i++ ){
var ele = this[i];
style.apply( ele );
}
if( notifyRenderer ){
this.rtrigger("style"); // let renderer know we changed style
} else {
this.trigger("style"); // just fire the event
}
return this; // chaining
},
data: $$.define.data({
field: "data",
bindingEvent: "data",
allowBinding: true,
allowSetting: true,
settingEvent: "data",
settingTriggersEvent: true,
triggerFnName: "trigger",
allowGetting: true,
immutableKeys: {
"id": true,
"source": true,
"target": true,
"parent": true
},
updateMappers: true
}),
removeData: $$.define.removeData({
field: "data",
event: "data",
triggerFnName: "trigger",
triggerEvent: true,
immutableKeys: {
"id": true,
"source": true,
"target": true,
"parent": true
},
updateMappers: true
}),
batchData: $$.define.batchData({
field: "data",
event: "data",
triggerFnName: "trigger",
immutableKeys: {
"id": true,
"source": true,
"target": true,
"parent": true
},
updateMappers: true
}),
scratch: $$.define.data({
field: "scratch",
allowBinding: false,
allowSetting: true,
settingTriggersEvent: false,
allowGetting: true
}),
removeScratch: $$.define.removeData({
field: "scratch",
triggerEvent: false
}),
rscratch: $$.define.data({
field: "rscratch",
allowBinding: false,
allowSetting: true,
settingTriggersEvent: false,
allowGetting: true
}),
removeRscratch: $$.define.removeData({
field: "rscratch",
triggerEvent: false
}),
id: function(){
var ele = this[0];
if( ele ){
return ele._private.data.id;
}
},
position: $$.define.data({
field: "position",
bindingEvent: "position",
allowBinding: true,
allowSetting: true,
settingEvent: "position",
settingTriggersEvent: true,
triggerFnName: "rtrigger",
allowGetting: true,
validKeys: ["x", "y"]
}),
positions: function( pos ){
if( $$.is.plainObject(pos) ){
this.position(pos);
} else if( $$.is.fn(pos) ){
var fn = pos;
for( var i = 0; i < this.length; i++ ){
var ele = this[i];
var pos = fn.apply(ele, [i, ele]);
if( pos && !ele.locked() ){
var elePos = ele._private.position;
elePos.x = pos.x;
elePos.y = pos.y;
}
}
this.rtrigger("position");
}
return this; // chaining
},
// get the rendered (i.e. on screen) positon of the element
// TODO allow setting
renderedPosition: function( dim ){
var ele = this[0];
var cy = this.cy();
var zoom = cy.zoom();
var pan = cy.pan();
if( ele && ele.isNode() ){ // must have an element and must be a node to return position
var pos = ele._private.position;
var rpos = {
x: pos.x * zoom + pan.x,
y: pos.y * zoom + pan.y
};
if( dim === undefined ){ // then return the whole rendered position
return rpos;
} else { // then return the specified dimension
return rpos[ dim ];
}
}
},
// get the specified css property as a rendered value (i.e. on-screen value)
// or get the whole rendered style if no property specified (NB doesn't allow setting)
renderedCss: function( property ){
var ele = this[0];
if( ele ){
var renstyle = ele.cy().style().getRenderedStyle( ele );
if( property === undefined ){
return renstyle;
} else {
return renstyle[ property ];
}
}
},
// read the calculated css style of the element or override the style (via a bypass)
css: function( name, value ){
var style = this.cy().style();
if( $$.is.plainObject(name) ){ // then extend the bypass
var props = name;
style.applyBypass( this, props );
this.rtrigger("style"); // let the renderer know we've updated style
} else if( $$.is.string(name) ){
if( value === undefined ){ // then get the property from the style
var ele = this[0];
if( ele ){
return ele._private.style[ name ].strValue;
} else { // empty collection => can't get any value
return;
}
} else { // then set the bypass with the property value
style.applyBypass( this, name, value );
this.rtrigger("style"); // let the renderer know we've updated style
}
} else if( name === undefined ){
var ele = this[0];
if( ele ){
return style.getRawStyle( ele );
} else { // empty collection => can't get any value
return;
}
}
return this; // chaining
},
removeCss: function(){
var style = this.cy().style();
var eles = this;
for( var i = 0; i < eles.length; i++ ){
var ele = eles[i];
style.removeAllBypasses( ele );
}
this.rtrigger('style');
},
show: function(){
this.css("visibility", "visible");
return this; // chaining
},
hide: function(){
this.css("visibility", "hidden");
return this; // chaining
},
visible: function(){
var ele = this[0];
if( ele ){
if( ele.css("visibility") !== "visible" ){
return false;
}
if( ele.isNode() ){
var parents = ele.parents();
for( var i = 0; i < parents.length; i++ ){
var parent = parents[i];
var parentVisibility = parent.css("visibility");
if( parentVisibility !== "visible" ){
return false;
}
}
return true;
} else if( ele.isEdge() ){
var src = ele.source();
var tgt = ele.target();
return src.visible() && tgt.visible();
}
}
},
hidden: function(){
var ele = this[0];
if( ele ){
return !this.visible();
}
},
// convenience function to get a numerical value for the width of the node/edge
width: function(){
var ele = this[0];
if( ele ){
var w = this._private.style.width;
return w.strValue === "auto" ? ele._private.autoWidth : w.pxValue;
}
},
outerWidth: function(){
var ele = this[0];
if( ele ){
var style = this._private.style;
var width = style.width.strValue === "auto" ? ele._private.autoWidth : style.width.pxValue;;
var border = style["border-width"] ? style["border-width"].pxValue * borderWidthMultiplier + borderWidthAdjustment : 0;
return width + border;
}
},
renderedWidth: function(){
var ele = this[0];
if( ele ){
var width = this.width();
return width * this.cy().zoom();
}
},
renderedOuterWidth: function(){
var ele = this[0];
if( ele ){
var owidth = this.outerWidth();
return owidth * this.cy().zoom();
}
},
// convenience function to get a numerical value for the height of the node
height: function(){
var ele = this[0];
if( ele && ele.isNode() ){
var h = this._private.style.height;
return h.strValue === "auto" ? ele._private.autoHeight : h.pxValue;
}
},
outerHeight: function(){
var ele = this[0];
if( ele ){
var style = this._private.style;
var height = style.height.strValue === "auto" ? ele._private.autoHeight : style.height.pxValue;
var border = style["border-width"] ? style["border-width"].pxValue * borderWidthMultiplier + borderWidthAdjustment : 0;
return height + border;
}
},
renderedHeight: function(){
var ele = this[0];
if( ele ){
var height = this.height();
return height * this.cy().zoom();
}
},
renderedOuterHeight: function(){
var ele = this[0];
if( ele ){
var oheight = this.outerHeight();
return oheight * this.cy().zoom();
}
},
// get the position of the element relative to the container (i.e. not relative to parent node)
offset: function(){
var ele = this[0];
if( ele && ele.isNode() ){
var offset = {
x: ele._private.position.x,
y: ele._private.position.y
};
var parents = ele.parents();
for( var i = 0; i < parents.length; i++ ){
var parent = parents[i];
var parentPos = parent._private.position;
offset.x += parentPos.x;
offset.y += parentPos.y;
}
return offset;
}
},
renderedOffset: function(){
var ele = this[0];
if( ele && ele.isNode() ){
var offset = this.offset();
var cy = this.cy();
var zoom = cy.zoom();
var pan = cy.pan();
return {
x: offset.x * zoom + pan.x,
y: offset.y * zoom + pan.y
};
}
},
// get the bounding box of the elements (in raw model position)
boundingBox: function( selector ){
var eles = this;
if( !selector || ( $$.is.elementOrCollection(selector) && selector.length === 0 ) ){
eles = this;
} else if( $$.is.string(selector) ){
eles = this.filter( selector );
} else if( $$.is.elementOrCollection(selector) ){
eles = selector;
}
var x1 = Infinity;
var x2 = -Infinity;
var y1 = Infinity;
var y2 = -Infinity;
// find bounds of elements
for( var i = 0; i < eles.length; i++ ){
var ele = eles[i];
var ex1, ex2, ey1, ey2, x, y;
if( ele.isNode() ){
var pos = ele._private.position;
x = pos.x;
y = pos.y;
var w = ele.outerWidth();
var halfW = w/2;
var h = ele.outerHeight();
var halfH = h/2;
// handle node dimensions
/////////////////////////
ex1 = x - halfW;
ex2 = x + halfW;
ey1 = y - halfH;
ey2 = y + halfH;
x1 = ex1 < x1 ? ex1 : x1;
x2 = ex2 > x2 ? ex2 : x2;
y1 = ey1 < y1 ? ey1 : y1;
y2 = ey2 > y2 ? ey2 : y2;
} else { // is edge
var n1pos = ele.source()[0]._private.position;
var n2pos = ele.target()[0]._private.position;
// handle edge dimensions (rough box estimate)
//////////////////////////////////////////////
var rstyle = ele._private.rstyle;
x = rstyle.labelX;
y = rstyle.labelY;
ex1 = n1pos.x;
ex2 = n2pos.x;
ey1 = n1pos.y;
ey2 = n2pos.y;
if( ex1 > ex2 ){
var temp = ex1;
ex1 = ex2;
ex2 = temp;
}
if( ey1 > ey2 ){
var temp = ey1;
ey1 = ey2;
ey2 = temp;
}
x1 = ex1 < x1 ? ex1 : x1;
x2 = ex2 > x2 ? ex2 : x2;
y1 = ey1 < y1 ? ey1 : y1;
y2 = ey2 > y2 ? ey2 : y2;
// handle points along edge (sanity check)
//////////////////////////////////////////
var bpts = rstyle.bezierPts || [];
var w = ele._private.style['width'].value;
for( var j = 0; j < bpts.length; j++ ){
var bpt = bpts[j];
x1 = bpt.x - w < x1 ? bpt.x - w : x1;
x2 = bpt.x + w > x2 ? bpt.x + w : x2;
y1 = bpt.y - w < y1 ? bpt.y - w : y1;
y2 = bpt.y + w > y2 ? bpt.y + w : y2;
}
}
// handle label dimensions
//////////////////////////
var style = ele._private.style;
var label = style['content'].value;
var fontSize = style['font-size'];
var halign = style['text-halign'];
var valign = style['text-valign'];
var labelWidth = ele._private.rstyle.labelWidth;
if( label && fontSize && labelWidth != undefined && halign && valign ){
var lh = fontSize.value;
var lw = labelWidth;
var lx1, lx2, ly1, ly2;
switch( halign.value ){
case "left":
lx1 = ex1 - lw;
lx2 = ex1;
break;
case "center":
lx1 = x - lw/2;
lx2 = x + lw/2;
break;
case "right":
lx1 = ex2;
lx2 = ex2 + lw;
break;
}
if( ele.isEdge() ){ // force center case
lx1 = x - lw/2;
lx2 = x + lw/2;
}
switch( valign.value ){
case "top":
ly1 = ey1 - lh;
ly2 = ey1;
break;
case "center":
ly1 = y - lh/2;
ly2 = y + lh/2;
break;
case "bottom":
ly1 = ey2;
ly2 = ey2 + lh;
break;
}
if( ele.isEdge() ){ // force center case
ly1 = y - lh/2;
ly2 = y + lh/2;
}
x1 = lx1 < x1 ? lx1 : x1;
x2 = lx2 > x2 ? lx2 : x2;
y1 = ly1 < y1 ? ly1 : y1;
y2 = ly2 > y2 ? ly2 : y2;
}
} // for
// testing on debug page
// $('#bb').remove();
// $('#cytoscape').css('position', 'relative').append('
');
// $('#bb').css({
// 'position': 'absolute',
// 'left': x1,
// 'top': y1,
// 'width': x2 - x1,
// 'height': y2 - y1,
// 'background': 'rgba(255, 0, 0, 0.5)'
// })
return {
x1: x1,
x2: x2,
y1: y1,
y2: y2,
w: x2 - x1,
h: y2 - y1
};
}
});
})( cytoscape );
;(function( $$ ){
// Regular degree functions (works on single element)
////////////////////////////////////////////////////////////////////////////////////////////////////
function defineDegreeFunction(callback){
return function(){
var self = this;
if( self.length === 0 ){ return; }
if( self.isNode() && !self.removed() ){
var degree = 0;
var node = self[0];
var connectedEdges = node._private.edges;
for( var i = 0; i < connectedEdges.length; i++ ){
var edge = connectedEdges[i];
degree += callback( node, edge );
}
return degree;
} else {
return;
}
};
}
$$.fn.eles({
degree: defineDegreeFunction(function(node, edge){
if( edge.source().same( edge.target() ) ){
return 2;
} else {
return 1;
}
}),
indegree: defineDegreeFunction(function(node, edge){
if( edge.target().same(node) ){
return 1;
} else {
return 0;
}
}),
outdegree: defineDegreeFunction(function(node, edge){
if( edge.source().same(node) ){
return 1;
} else {
return 0;
}
})
});
// Collection degree stats
////////////////////////////////////////////////////////////////////////////////////////////////////
function defineDegreeBoundsFunction(degreeFn, callback){
return function(){
var ret = undefined;
var nodes = this.nodes();
for( var i = 0; i < nodes.length; i++ ){
var ele = nodes[i];
var degree = ele[degreeFn]();
if( degree !== undefined && (ret === undefined || callback(degree, ret)) ){
ret = degree;
}
}
return ret;
};
}
$$.fn.eles({
minDegree: defineDegreeBoundsFunction("degree", function(degree, min){
return degree < min;
}),
maxDegree: defineDegreeBoundsFunction("degree", function(degree, max){
return degree > max;
}),
minIndegree: defineDegreeBoundsFunction("indegree", function(degree, min){
return degree < min;
}),
maxIndegree: defineDegreeBoundsFunction("indegree", function(degree, max){
return degree > max;
}),
minOutdegree: defineDegreeBoundsFunction("outdegree", function(degree, min){
return degree < min;
}),
maxOutdegree: defineDegreeBoundsFunction("outdegree", function(degree, max){
return degree > max;
})
});
$$.fn.eles({
totalDegree: function(){
var total = 0;
var nodes = this.nodes();
for( var i = 0; i < nodes.length; i++ ){
total += nodes[i].degree();
}
return total;
}
});
})( cytoscape );
;(function($$){
// Functions for binding & triggering events
////////////////////////////////////////////////////////////////////////////////////////////////////
$$.fn.eles({
on: $$.define.on(), // .on( events [, selector] [, data], handler)
one: $$.define.on({ unbindSelfOnTrigger: true }),
once: $$.define.on({ unbindAllBindersOnTrigger: true }),
off: $$.define.off(), // .off( events [, selector] [, handler] )
trigger: $$.define.trigger(), // .trigger( events [, extraParams] )
rtrigger: function(event, extraParams){ // for internal use only
// notify renderer unless removed
this.cy().notify({
type: event,
collection: this.filter(function(){
return !this.removed();
})
});
this.trigger(event, extraParams);
return this;
}
});
// aliases for those folks who like old stuff:
$$.elesfn.bind = $$.elesfn.on;
$$.elesfn.unbind = $$.elesfn.off;
// add event aliases like .click()
$$.define.event.aliasesOn( $$.elesfn );
})( cytoscape );
;(function($$){
$$.fn.eles({
isNode: function(){
return this.group() === "nodes";
},
isEdge: function(){
return this.group() === "edges";
},
isLoop: function(){
return this.isEdge() && this.source().id() === this.target().id();
},
group: function(){
var ele = this[0];
if( ele ){
return ele._private.group;
}
}
});
})( cytoscape );
;(function($$){
// Functions for iterating over collections
////////////////////////////////////////////////////////////////////////////////////////////////////
$$.fn.eles({
each: function(fn){
if( $$.is.fn(fn) ){
for(var i = 0; i < this.length; i++){
var ele = this[i];
var ret = fn.apply( ele, [ i, ele ] );
if( ret === false ){ break; } // exit each early on return false
}
}
return this;
},
toArray: function(){
var array = [];
for(var i = 0; i < this.length; i++){
array.push( this[i] );
}
return array;
},
slice: function(start, end){
var array = [];
var thisSize = this.length;
if( end == null ){
end = thisSize;
}
if( start < 0 ){
start = thisSize + start;
}
for(var i = start; i >= 0 && i < end && i < thisSize; i++){
array.push( this[i] );
}
return new $$.Collection(this.cy(), array);
},
size: function(){
return this.length;
},
eq: function(i){
return this[i];
},
empty: function(){
return this.length === 0;
},
nonempty: function(){
return !this.empty();
}
});
})( cytoscape );
;(function($$){
// Collection functions that toggle a boolean value
////////////////////////////////////////////////////////////////////////////////////////////////////
function defineSwitchFunction(params){
return function(){
var args = arguments;
// e.g. cy.nodes().select( data, handler )
if( args.length === 2 ){
var data = args[0];
var handler = args[1];
this.bind( params.event, data, handler );
}
// e.g. cy.nodes().select( handler )
else if( args.length === 1 ){
var handler = args[0];
this.bind( params.event, handler );
}
// e.g. cy.nodes().select()
else if( args.length === 0 ){
for( var i = 0; i < this.length; i++ ){
var ele = this[i];
if( !params.ableField || ele._private[params.ableField] ){
ele._private[params.field] = params.value;
}
}
this.updateStyle(); // change of state => possible change of style
this.trigger(params.event);
}
return this;
};
}
function defineSwitchSet( params ){
$$.elesfn[ params.field ] = function(){
var ele = this[0];
if( ele ){
return ele._private[ params.field ];
}
};
$$.elesfn[ params.on ] = defineSwitchFunction({
event: params.on,
field: params.field,
ableField: params.ableField,
value: true
});
$$.elesfn[ params.off ] = defineSwitchFunction({
event: params.off,
field: params.field,
ableField: params.ableField,
value: false
});
}
defineSwitchSet({
field: "locked",
on: "lock",
off: "unlock"
});
defineSwitchSet({
field: "grabbable",
on: "grabify",
off: "ungrabify"
});
defineSwitchSet({
field: "selected",
ableField: "selectable",
on: "select",
off: "unselect"
});
defineSwitchSet({
field: "selectable",
on: "selectify",
off: "unselectify"
});
$$.elesfn.grabbed = function(){
var ele = this[0];
if( ele ){
return ele._private.grabbed;
}
};
defineSwitchSet({
field: "active",
on: "activate",
off: "unactivate"
});
$$.elesfn.inactive = function(){
var ele = this[0];
if( ele ){
return !ele._private.active;
}
};
})( cytoscape );
;(function($$){
$$.fn.eles({
nodes: function(selector){
return this.filter(function(i, element){
return element.isNode();
}).filter(selector);
},
edges: function(selector){
return this.filter(function(i, element){
return element.isEdge();
}).filter(selector);
},
filter: function(filter){
var cy = this._private.cy;
if( $$.is.fn(filter) ){
var elements = [];
for( var i = 0; i < this.length; i++ ){
var ele = this[i];
if( filter.apply(ele, [i, ele]) ){
elements.push(ele);
}
}
return new $$.Collection(cy, elements);
} else if( $$.is.string(filter) || $$.is.elementOrCollection(filter) ){
return new $$.Selector(filter).filter(this);
} else if( filter === undefined ){
return this;
}
return new $$.Collection( cy ); // if not handled by above, give 'em an empty collection
},
not: function(toRemove){
var cy = this._private.cy;
if( !toRemove ){
return this;
} else {
if( $$.is.string( toRemove ) ){
toRemove = this.filter( toRemove );
}
var elements = [];
for( var i = 0; i < this.length; i++ ){
var element = this[i];
var remove = toRemove._private.ids[ element.id() ];
if( !remove ){
elements.push( element );
}
}
return new $$.Collection( cy, elements );
}
},
intersect: function( other ){
var self = this;
var cy = this._private.cy;
// if a selector is specified, then filter by it
if( $$.is.string(other) ){
var selector = other;
return this.filter( selector );
}
var elements = [];
var col1 = this;
var col2 = other;
var col1Smaller = this.length < other.length;
var ids1 = col1Smaller ? col1._private.ids : col2._private.ids;
var ids2 = col1Smaller ? col2._private.ids : col1._private.ids;
for( var id in ids1 ){
var ele = ids2[ id ];
if( ele ){
elements.push( ele );
}
}
return new $$.Collection( cy, elements );
},
add: function(toAdd){
var self = this;
var cy = this._private.cy;
if( !toAdd ){
return this;
}
if( $$.is.string(toAdd) ){
var selector = toAdd;
toAdd = cy.elements(selector);
}
var elements = [];
var ids = {};
function add(element){
if( !element ){
return;
}
if( !ids[ element.id() ] ){
elements.push( element );
ids[ element.id() ] = true;
}
}
// add own
for( var i = 0; i < self.length; i++ ){
var element = self[i];
add(element);
}
// add toAdd
for( var i = 0; i < toAdd.length; i++ ){
var element = toAdd[i];
add(element);
}
return new $$.Collection(cy, elements);
}
});
$$.fn.eles({
// do a breadth first search from the nodes in the collection
// from pseudocode on wikipedia
breadthFirstSearch: function( fn, directed ){
fn = fn || function(){};
var cy = this._private.cy;
var v = this;
var Q = [];
var marked = {};
var id2depth = {};
var connectedFrom = {};
var connectedEles = [];
// enqueue v
for( var i = 0; i < v.length; i++ ){
if( v[i].isNode() ){
Q.unshift( v[i] );
// and mark v
marked[ v[i].id() ] = true;
id2depth[ v[i].id() ] = 0;
connectedEles.push( v[i] );
}
}
i = 0;
while( Q.length !== 0 ){ // while Q not empty
var t = Q.shift();
var depth = 0;
var fromNodeId = connectedFrom[ t.id() ];
while( fromNodeId ){
depth++;
fromNodeId = connectedFrom[ fromNodeId ];
}
id2depth[ t.id() ] = depth;
var ret = fn.call(t, i, depth);
i++;
// on return true, return the result
if( ret === true ){
return new $$.Collection( cy, [ t ] );
}
// on return false, stop iteration
else if( ret === false ){
break;
}
var adjacentEdges = t.connectedEdges(directed ? '[source = "' + t.id() + '"]' : undefined);
for( var j = 0; j < adjacentEdges.length; j++ ){
var e = adjacentEdges[j];
var u = e.connectedNodes('[id != "' + t.id() + '"]');
if( u.length !== 0 ){
u = u[0];
if( !marked[ u.id() ] ){
marked[ u.id() ] = true; // mark u
Q.unshift( u ); // enqueue u onto Q
connectedFrom[ u.id() ] = t.id();
connectedEles.push( u );
connectedEles.push( e );
}
}
}
}
return new $$.Collection( cy, connectedEles ); // return none
},
// do a depth first search on the nodes in the collection
// from pseudocode on wikipedia (iterative impl)
depthFirstSearch: function( fn, directed ){
fn = fn || function(){};
var cy = this._private.cy;
var v = this;
var S = [];
var discovered = [];
var forwardEdge = {};
var backEdge = {};
var crossEdge = {};
var treeEdge = {};
var explored = {};
function labelled(e){
var id = e.id();
return forwardEdge[id] || backEdge[id] || crossEdge[id] || treeEdge[id];
}
// push v
for( var i = 0; i < v.length; i++ ){
if( v[i].isNode() ){
S.push( v[i] );
// and mark discovered
discovered[ v[i].id() ] = true;
}
}
while( S.length !== 0 ){
var t = S[ S.length - 1 ];
var ret = fn.call(t);
var breaked = false;
if( ret === true ){
return new $$.Collection( cy, [t] );
}
var adjacentEdges = t.connectedEdges(directed ? '[source = "' + t.id() + '"]' : undefined);
for( var i = 0; i < adjacentEdges.length; i++ ){
var e = adjacentEdges[i];
if( labelled(e) ){
continue;
}
var w = e.connectedNodes('[id != "' + t.id() + '"]');
if( w.length !== 0 ){
w = w[0];
var wid = w.id();
if( !discovered[wid] && !explored[wid] ){
treeEdge[wid] = true;
discovered[wid] = true;
S.push(w);
breaked = true;
break;
} else if( discovered[wid] ){
backEdge[wid] = true;
} else {
crossEdge[wid] = true;
}
}
}
if( !breaked ){
explored[ t.id() ] = true;
S.pop();
}
}
},
// get the root nodes in the DAG
roots: function( selector ){
var eles = this;
var roots = [];
for( var i = 0; i < eles.length; i++ ){
var ele = eles[i];
if( !ele.isNode() ){
continue;
}
var hasEdgesPointingIn = ele.connectedEdges('[target = "' + ele.id() + '"][source != "' + ele.id() + '"]').length > 0;
if( !hasEdgesPointingIn ){
roots.push( ele );
}
}
return new $$.Collection( this._private.cy, roots ).filter( selector );
},
// kruskal's algorithm (finds min spanning tree, assuming undirected graph)
// implemented from pseudocode from wikipedia
kruskal: function( weightFn ){
weightFn = weightFn || function(){ return 1; }; // if not specified, assume each edge has equal weight (1)
function findSet(ele){
for( var i = 0; i < forest.length; i++ ){
var eles = forest[i];
if( eles.anySame(ele) ){
return {
eles: eles,
index: i
};
}
}
}
var A = new $$.Collection(this._private.cy, []);
var forest = [];
var nodes = this.nodes();
for( var i = 0; i < nodes.length; i++ ){
forest.push( nodes[i].collection() );
}
var edges = this.edges();
var S = edges.toArray().sort(function(a, b){
var weightA = weightFn.call(a);
var weightB = weightFn.call(b);
return weightA - weightB;
});
for(var i = 0; i < S.length; i++){
var edge = S[i];
var u = edge.source()[0];
var v = edge.target()[0];
var setU = findSet(u);
var setV = findSet(v);
if( setU.eles !== setV.eles ){
A = A.add( edge );
forest[ setU.index ] = setU.eles.add( setV.eles );
forest.splice( setV.index, 1 );
}
}
return nodes.add( A );
},
dijkstra: function( target, weightFn, directed ){
var cy = this._private.cy;
directed = !$$.is.fn(weightFn) ? weightFn : directed;
directed = directed === undefined || directed;
weightFn = $$.is.fn(weightFn) ? weightFn : function(){ return 1; }; // if not specified, assume each edge has equal weight (1)
if( this.length === 0 || !target || !$$.is.elementOrCollection(target) || target.length === 0 ){
return new $$.Collection(cy, []);
}
var source = this[0];
target = target[0];
var dist = {};
var prev = {};
var nodes = cy.nodes();
for( var i = 0; i < nodes.length; i++ ){
dist[ nodes[i].id() ] = Infinity;
}
dist[ source.id() ] = 0;
var Q = nodes;
var smallestDist = function(Q){
var smallest = Infinity;
var index;
for(var i in dist){
if( dist[i] < smallest && Q.$('#' + i).length !== 0 ){
smallest = dist[i];
index = i;
}
}
return index;
};
var distBetween = function(u, v){
var edges = u.edgesWith(v);
var smallestDistance = Infinity;
var smallestEdge;
for( var i = 0; i < edges.length; i++ ){
var edge = edges[i];
var weight = weightFn.call(edge);
if( weight < smallestDistance ){
smallestDistance = weight;
smallestEdge = edge;
}
}
return {
edge: smallestEdge,
dist: smallestDistance
};
};
while( Q.length !== 0 ){
var uid = smallestDist(Q);
var u = Q.filter('#' + uid);
if( u.length === 0 ){
continue;
}
//debugger;
Q = Q.not( u );
if( u.same(target) ){
break;
}
if( dist[uid] === Math.Infinite ){
break;
}
var neighbors = u.neighborhood().nodes();
for( var i = 0; i < neighbors.length; i++ ){
var v = neighbors[i];
var vid = v.id()
var duv = distBetween(u, v);
var alt = dist[uid] + duv.dist;
if( alt < dist[vid] ){
dist[vid] = alt;
prev[vid] = {
node: v,
edge: duv.edge
};
// TODO decrease-key v in Q
}
}
}
}
});
// nice, short mathemathical alias
$$.elesfn.bfs = $$.elesfn.breadthFirstSearch;
$$.elesfn.dfs = $$.elesfn.depthFirstSearch;
// Neighbourhood functions
//////////////////////////
$$.fn.eles({
neighborhood: function(selector){
var elements = [];
var cy = this._private.cy;
var nodes = this.nodes();
for( var i = 0; i < nodes.length; i++ ){ // for all nodes
var node = nodes[i];
var connectedEdges = node.connectedEdges();
// for each connected edge, add the edge and the other node
for( var j = 0; j < connectedEdges.length; j++ ){
var edge = connectedEdges[j];
var otherNode = edge.connectedNodes().not(node);
// need check in case of loop
if( otherNode.length > 0 ){
elements.push( otherNode[0] ); // add node 1 hop away
}
// add connected edge
elements.push( edge[0] );
}
}
return ( new $$.Collection( cy, elements ) ).filter( selector );
},
closedNeighborhood: function(selector){
return this.neighborhood().add(this).filter(selector);
},
openNeighborhood: function(selector){
return this.neighborhood(selector);
}
});
// Edge functions
/////////////////
$$.fn.eles({
source: defineSourceFunction({
attr: "source"
}),
target: defineSourceFunction({
attr: "target"
})
});
function defineSourceFunction( params ){
return function( selector ){
var sources = [];
var edges = this.edges();
var cy = this._private.cy;
for( var i = 0; i < edges.length; i++ ){
var edge = edges[i];
var id = edge._private.data[params.attr];
var src = cy.getElementById( id );
if( src.length > 0 ){
sources.push( src );
}
}
return new $$.Collection( cy, sources ).filter( selector );
}
}
$$.fn.eles({
edgesWith: defineEdgesWithFunction(),
edgesTo: defineEdgesWithFunction({
thisIs: "source"
})
});
function defineEdgesWithFunction( params ){
return function(otherNodes){
var elements = [];
var cy = this._private.cy;
var p = params || {};
// get elements if a selector is specified
if( $$.is.string(otherNodes) ){
otherNodes = cy.$( otherNodes );
}
var edges = otherNodes.connectedEdges();
var thisIds = this._private.ids;
for( var i = 0; i < edges.length; i++ ){
var edge = edges[i];
var foundId;
var edgeData = edge._private.data;
if( p.thisIs ){
var idToFind = edgeData[ p.thisIs ];
foundId = thisIds[ idToFind ];
} else {
foundId = thisIds[ edgeData.source ] || thisIds[ edgeData.target ];
}
if( foundId ){
elements.push( edge );
}
}
return new $$.Collection( cy, elements );
};
}
$$.fn.eles({
connectedEdges: function( selector ){
var elements = [];
var cy = this._private.cy;
var nodes = this.nodes();
for( var i = 0; i < nodes.length; i++ ){
var node = nodes[i];
var edges = node._private.edges;
for( var j = 0; j < edges.length; j++ ){
var edge = edges[j];
elements.push( edge );
}
}
return new $$.Collection( cy, elements ).filter( selector );
},
connectedNodes: function( selector ){
var elements = [];
var cy = this._private.cy;
var edges = this.edges();
for( var i = 0; i < edges.length; i++ ){
var edge = edges[i];
elements.push( edge.source()[0] );
elements.push( edge.target()[0] );
}
return new $$.Collection( cy, elements ).filter( selector );
},
parallelEdges: defineParallelEdgesFunction(),
codirectedEdges: defineParallelEdgesFunction({
codirected: true
}),
parallelIndex: function(){
var edge = this[0];
if( edge.isEdge() ){
var src = edge.source()[0];
var srcEdges = src._private.edges;
var index = 0;
for( var i = 0; i < srcEdges.length; i++ ){
var srcEdge = srcEdges[i];
var thisIsTheIndex = srcEdge === edge;
if( thisIsTheIndex ){
return index;
}
var codirected = edge._private.data.source === srcEdge._private.data.source
&& edge._private.data.target === srcEdge._private.data.target;
var opdirected = edge._private.data.source === srcEdge._private.data.target
&& edge._private.data.target === srcEdge._private.data.source;
var parallel = codirected || opdirected;
if( parallel ){ // then increase the count
index++;
}
}
}
},
parallelSize: function(){
var edge = this[0];
if( edge.isEdge() ){
var src = edge.source()[0];
var srcEdges = src._private.edges;
var numEdges = 0;
for( var i = 0; i < srcEdges.length; i++ ){
var srcEdge = srcEdges[i];
var codirected = edge._private.data.source === srcEdge._private.data.source
&& edge._private.data.target === srcEdge._private.data.target;
var opdirected = edge._private.data.source === srcEdge._private.data.target
&& edge._private.data.target === srcEdge._private.data.source;
var parallel = codirected || opdirected;
if( parallel ){ // then increase the count
numEdges++;
}
}
return numEdges;
}
}
});
function defineParallelEdgesFunction(params){
var defaults = {
codirected: false
};
params = $$.util.extend({}, defaults, params);
return function( selector ){
var cy = this._private.cy;
var elements = [];
var edges = this.edges();
var p = params;
// look at all the edges in the collection
for( var i = 0; i < edges.length; i++ ){
var edge1 = edges[i];
var src1 = edge1.source()[0];
var srcid1 = src1.id();
var tgt1 = edge1.target()[0];
var tgtid1 = tgt1.id();
var srcEdges1 = src1._private.edges;
// look at edges connected to the src node of this edge
for( var j = 0; j < srcEdges1.length; j++ ){
var edge2 = srcEdges1[j];
var edge2data = edge2._private.data;
var tgtid2 = edge2data.target;
var srcid2 = edge2data.source;
var codirected = tgtid2 === tgtid1 && srcid2 === srcid1;
var oppdirected = srcid1 === tgtid2 && tgtid1 === srcid2;
if( (p.codirected && codirected)
|| (!p.codirected && (codirected || oppdirected)) ){
elements.push( edge2 );
}
}
}
return new $$.Collection( cy, elements ).filter( selector );
};
}
// Compound functions
/////////////////////
$$.fn.eles({
parent: function( selector ){
var parents = [];
var cy = this._private.cy;
for( var i = 0; i < this.length; i++ ){
var ele = this[i];
var parent = cy.getElementById( ele._private.data.parent );
if( parent.size() > 0 ){
parents.push( parent );
}
}
return new $$.Collection( cy, parents ).filter( selector );
},
parents: function( selector ){
var parents = [];
var eles = this.parent();
while( eles.nonempty() ){
for( var i = 0; i < eles.length; i++ ){
var ele = eles[i];
parents.push( ele );
}
eles = eles.parent();
}
return new $$.Collection( this.cy(), parents ).filter( selector );
},
children: function( selector ){
var children = [];
for( var i = 0; i < this.length; i++ ){
var ele = this[i];
children = children.concat( ele._private.children );
}
return new $$.Collection( this.cy(), children ).filter( selector );
},
siblings: function( selector ){
return this.parent().children().not( this ).filter( selector );
},
isParent: function(){
var ele = this[0];
if( ele ){
return ele._private.children.length !== 0;
}
},
isChild: function(){
var ele = this[0];
if( ele ){
return ele._private.data.parent !== undefined && ele.parent().length !== 0;
}
},
descendants: function( selector ){
var elements = [];
function add( eles ){
for( var i = 0; i < eles.length; i++ ){
var ele = eles[i];
elements.push( ele );
if( ele.children().nonempty() ){
add( ele.children() );
}
}
}
add( this.children() );
return new $$.Collection( this.cy(), elements ).filter( selector );
}
});
})( cytoscape );
;(function($$){
$$.fn.selector = function(map, options){
for( var name in map ){
var fn = map[name];
$$.Selector.prototype[ name ] = fn;
}
};
$$.Selector = function(onlyThisGroup, selector){
if( !(this instanceof $$.Selector) ){
return new $$.Selector(onlyThisGroup, selector);
}
if( selector === undefined && onlyThisGroup !== undefined ){
selector = onlyThisGroup;
onlyThisGroup = undefined;
}
var self = this;
self._private = {
selectorText: null,
invalid: true
}
// storage for parsed queries
// when you add something here, also add to Selector.toString()
function newQuery(){
return {
classes: [],
colonSelectors: [],
data: [],
group: null,
ids: [],
meta: [],
// fake selectors
collection: null, // a collection to match against
filter: null, // filter function
// these are defined in the upward direction rather than down (e.g. child)
// because we need to go up in Selector.filter()
parent: null, // parent query obj
ancestor: null, // ancestor query obj
subject: null, // defines subject in compound query (subject query obj; points to self if subject)
// use these only when subject has been defined
child: null,
descendant: null
};
}
if( !selector || ( $$.is.string(selector) && selector.match(/^\s*$/) ) ){
if( onlyThisGroup == null ){
// ignore
self.length = 0;
} else {
self[0] = newQuery();
self[0].group = onlyThisGroup;
self.length = 1;
}
} else if( $$.is.element( selector ) ){
var collection = new $$.Collection(self.cy(), [ selector ]);
self[0] = newQuery();
self[0].collection = collection;
self.length = 1;
} else if( $$.is.collection( selector ) ){
self[0] = newQuery();
self[0].collection = selector;
self.length = 1;
} else if( $$.is.fn( selector ) ) {
self[0] = newQuery();
self[0].filter = selector;
self.length = 1;
} else if( $$.is.string( selector ) ){
// these are the actual tokens in the query language
var metaChar = "[\\!\\\"\\#\\$\\%\\&\\\'\\(\\)\\*\\+\\,\\.\\/\\:\\;\\<\\=\\>\\?\\@\\[\\]\\^\\`\\{\\|\\}\\~]"; // chars we need to escape in var names, etc
var variable = "(?:[\\w-]|(?:\\\\"+ metaChar +"))+"; // a variable name
var comparatorOp = "=|\\!=|>|>=|<|<=|\\$=|\\^=|\\*="; // binary comparison op (used in data selectors)
var boolOp = "\\?|\\!|\\^"; // boolean (unary) operators (used in data selectors)
var string = '"(?:\\\\"|[^"])+"' + "|" + "'(?:\\\\'|[^'])+'"; // string literals (used in data selectors) -- doublequotes | singlequotes
var number = $$.util.regex.number; // number literal (used in data selectors) --- e.g. 0.1234, 1234, 12e123
var value = string + "|" + number; // a value literal, either a string or number
var meta = "degree|indegree|outdegree"; // allowed metadata fields (i.e. allowed functions to use from $$.Collection)
var separator = "\\s*,\\s*"; // queries are separated by commas; e.g. edge[foo = "bar"], node.someClass
var className = variable; // a class name (follows variable conventions)
var descendant = "\\s+";
var child = "\\s+>\\s+";
var subject = "\\$";
var id = variable; // an element id (follows variable conventions)
// when a token like a variable has escaped meta characters, we need to clean the backslashes out
// so that values get compared properly in Selector.filter()
function cleanMetaChars(str){
return str.replace(new RegExp("\\\\(" + metaChar + ")", "g"), "\1");
}
// add @ variants to comparatorOp
var ops = comparatorOp.split("|");
for( var i = 0; i < ops.length; i++ ){
var op = ops[i];
comparatorOp += "|@" + op;
}
// the current subject in the query
var currentSubject = null;
// NOTE: add new expression syntax here to have it recognised by the parser;
// a query contains all adjacent (i.e. no separator in between) expressions;
// the current query is stored in self[i] --- you can use the reference to `this` in the populate function;
// you need to check the query objects in Selector.filter() for it actually filter properly, but that's pretty straight forward
var exprs = {
group: {
query: true,
regex: "(node|edge|\\*)",
populate: function( group ){
this.group = group == "*" ? group : group + "s";
}
},
state: {
query: true,
regex: "(:selected|:unselected|:locked|:unlocked|:visible|:hidden|:grabbed|:free|:removed|:inside|:grabbable|:ungrabbable|:animated|:unanimated|:selectable|:unselectable|:parent|:child|:active|:inactive|:touch)",
populate: function( state ){
this.colonSelectors.push( state );
}
},
id: {
query: true,
regex: "\\#("+ id +")",
populate: function( id ){
this.ids.push( cleanMetaChars(id) );
}
},
className: {
query: true,
regex: "\\.("+ className +")",
populate: function( className ){
this.classes.push( cleanMetaChars(className) );
}
},
dataExists: {
query: true,
regex: "\\[\\s*("+ variable +")\\s*\\]",
populate: function( variable ){
this.data.push({
field: cleanMetaChars(variable)
});
}
},
dataCompare: {
query: true,
regex: "\\[\\s*("+ variable +")\\s*("+ comparatorOp +")\\s*("+ value +")\\s*\\]",
populate: function( variable, comparatorOp, value ){
this.data.push({
field: cleanMetaChars(variable),
operator: comparatorOp,
value: value
});
}
},
dataBool: {
query: true,
regex: "\\[\\s*("+ boolOp +")\\s*("+ variable +")\\s*\\]",
populate: function( boolOp, variable ){
this.data.push({
field: cleanMetaChars(variable),
operator: boolOp
});
}
},
metaCompare: {
query: true,
regex: "\\{\\s*("+ meta +")\\s*("+ comparatorOp +")\\s*("+ number +")\\s*\\}",
populate: function( meta, comparatorOp, number ){
this.meta.push({
field: cleanMetaChars(meta),
operator: comparatorOp,
value: number
});
}
},
nextQuery: {
separator: true,
regex: separator,
populate: function(){
// go on to next query
self[++i] = newQuery();
currentSubject = null;
}
},
child: {
separator: true,
regex: child,
populate: function(){
// this query is the parent of the following query
var childQuery = newQuery();
childQuery.parent = this;
childQuery.subject = currentSubject;
// we're now populating the child query with expressions that follow
self[i] = childQuery;
}
},
descendant: {
separator: true,
regex: descendant,
populate: function(){
// this query is the ancestor of the following query
var descendantQuery = newQuery();
descendantQuery.ancestor = this;
descendantQuery.subject = currentSubject;
// we're now populating the descendant query with expressions that follow
self[i] = descendantQuery;
}
},
subject: {
modifier: true,
regex: subject,
populate: function(){
if( currentSubject != null && this.subject != this ){
$$.util.error("Redefinition of subject in selector `" + selector + "`");
return false;
}
currentSubject = this;
this.subject = this;
},
}
};
var j = 0;
for( var name in exprs ){
exprs[j] = exprs[name];
exprs[j].name = name;
j++;
}
exprs.length = j;
self._private.selectorText = selector;
var remaining = selector;
var i = 0;
// of all the expressions, find the first match in the remaining text
function consumeExpr( expectation ){
var expr;
var match;
var name;
for( var j = 0; j < exprs.length; j++ ){
var e = exprs[j];
var n = e.name;
// ignore this expression if it doesn't meet the expectation function
if( $$.is.fn( expectation ) && !expectation(n, e) ){ continue }
var m = remaining.match(new RegExp( "^" + e.regex ));
if( m != null ){
match = m;
expr = e;
name = n;
var consumed = m[0];
remaining = remaining.substring( consumed.length );
break; // we've consumed one expr, so we can return now
}
}
return {
expr: expr,
match: match,
name: name
};
}
// consume all leading whitespace
function consumeWhitespace(){
var match = remaining.match(/^\s+/);
if( match ){
var consumed = match[0];
remaining = remaining.substring( consumed.length );
}
}
self[0] = newQuery(); // get started
consumeWhitespace(); // get rid of leading whitespace
for(;;){
var check = consumeExpr();
if( check.expr == null ){
$$.util.error("The selector `"+ selector +"`is invalid");
return;
} else {
var args = [];
for(var j = 1; j < check.match.length; j++){
args.push( check.match[j] );
}
// let the token populate the selector object (i.e. in self[i])
var ret = check.expr.populate.apply( self[i], args );
if( ret === false ){ return } // exit if population failed
}
// we're done when there's nothing left to parse
if( remaining.match(/^\s*$/) ){
break;
}
}
self.length = i + 1;
// adjust references for subject
for(j = 0; j < self.length; j++){
var query = self[j];
if( query.subject != null ){
// go up the tree until we reach the subject
for(;;){
if( query.subject == query ){ break } // done if subject is self
if( query.parent != null ){ // swap parent/child reference
var parent = query.parent;
var child = query;
child.parent = null;
parent.child = child;
query = parent; // go up the tree
} else if( query.ancestor != null ){ // swap ancestor/descendant
var ancestor = query.ancestor;
var descendant = query;
descendant.ancestor = null;
ancestor.descendant = descendant;
query = ancestor; // go up the tree
} else {
$$.util.error("When adjusting references for the selector `"+ query +"`, neither parent nor ancestor was found");
break;
}
} // for
self[j] = query.subject; // subject should be the root query
} // if
} // for
// make sure for each query that the subject group matches the implicit group if any
if( onlyThisGroup != null ){
for(var j = 0; j < self.length; j++){
if( self[j].group != null && self[j].group != onlyThisGroup ){
$$.util.error("Group `"+ self[j].group +"` conflicts with implicit group `"+ onlyThisGroup +"` in selector `"+ selector +"`");
return;
}
self[j].group = onlyThisGroup; // set to implicit group
}
}
} else {
$$.util.error("A selector must be created from a string; found " + selector);
return;
}
self._private.invalid = false;
};
$$.selfn = $$.Selector.prototype;
$$.selfn.size = function(){
return this.length;
};
$$.selfn.eq = function(i){
return this[i];
};
// get elements from the core and then filter them
$$.selfn.find = function(){
// TODO impl if we decide to use a DB for storing elements
};
// filter an existing collection
$$.selfn.filter = function(collection, addLiveFunction){
var self = this;
var cy = collection.cy();
// don't bother trying if it's invalid
if( self._private.invalid ){
return new $$.Collection( cy );
}
var queryMatches = function(query, element){
// check group
if( query.group != null && query.group != "*" && query.group != element._private.group ){
return false;
}
// check colon selectors
var allColonSelectorsMatch = true;
for(var k = 0; k < query.colonSelectors.length; k++){
var sel = query.colonSelectors[k];
var renderer = cy.renderer(); // TODO remove reference after refactoring
switch(sel){
case ":selected":
allColonSelectorsMatch = element.selected();
break;
case ":unselected":
allColonSelectorsMatch = !element.selected();
break;
case ":selectable":
allColonSelectorsMatch = element.selectable();
break;
case ":unselectable":
allColonSelectorsMatch = !element.selectable();
break;
case ":locked":
allColonSelectorsMatch = element.locked();
break;
case ":unlocked":
allColonSelectorsMatch = !element.locked();
break;
case ":visible":
allColonSelectorsMatch = element.visible();
break;
case ":hidden":
allColonSelectorsMatch = !element.visible();
break;
case ":grabbed":
allColonSelectorsMatch = element.grabbed();
break;
case ":free":
allColonSelectorsMatch = !element.grabbed();
break;
case ":removed":
allColonSelectorsMatch = element.removed();
break;
case ":inside":
allColonSelectorsMatch = !element.removed();
break;
case ":grabbable":
allColonSelectorsMatch = element.grabbable();
break;
case ":ungrabbable":
allColonSelectorsMatch = !element.grabbable();
break;
case ":animated":
allColonSelectorsMatch = element.animated();
break;
case ":unanimated":
allColonSelectorsMatch = !element.animated();
break;
case ":parent":
allColonSelectorsMatch = element.children().nonempty();
break;
case ":child":
allColonSelectorsMatch = element.parent().nonempty();
break;
case ":active":
allColonSelectorsMatch = element.active();
break;
case ":inactive":
allColonSelectorsMatch = !element.active();
break;
case ":touch":
allColonSelectorsMatch = window && document && (('ontouchstart' in window) || window.DocumentTouch && document instanceof DocumentTouch);
break;
}
if( !allColonSelectorsMatch ) break;
}
if( !allColonSelectorsMatch ) return false;
// check id
var allIdsMatch = true;
for(var k = 0; k < query.ids.length; k++){
var id = query.ids[k];
var actualId = element._private.data.id;
allIdsMatch = allIdsMatch && (id == actualId);
if( !allIdsMatch ) break;
}
if( !allIdsMatch ) return false;
// check classes
var allClassesMatch = true;
for(var k = 0; k < query.classes.length; k++){
var cls = query.classes[k];
allClassesMatch = allClassesMatch && element.hasClass(cls);
if( !allClassesMatch ) break;
}
if( !allClassesMatch ) return false;
// generic checking for data/metadata
function operandsMatch(params){
var allDataMatches = true;
for(var k = 0; k < query[params.name].length; k++){
var data = query[params.name][k];
var operator = data.operator;
var value = data.value;
var field = data.field;
var matches;
if( operator != null && value != null ){
var fieldStr = "" + params.fieldValue(field);
var valStr = "" + eval(value);
var caseInsensitive = false;
if( operator.charAt(0) == "@" ){
fieldStr = fieldStr.toLowerCase();
valStr = valStr.toLowerCase();
operator = operator.substring(1);
caseInsensitive = true;
}
if( operator == "=" ){
operator = "==";
}
switch(operator){
case "*=":
matches = fieldStr.search(valStr) >= 0;
break;
case "$=":
matches = new RegExp(valStr + "$").exec(fieldStr) != null;
break;
case "^=":
matches = new RegExp("^" + valStr).exec(fieldStr) != null;
break;
default:
// if we're doing a case insensitive comparison, then we're using a STRING comparison
// even if we're comparing numbers
if( caseInsensitive ){
// eval with lower case strings
var expr = "fieldStr " + operator + " valStr";
matches = eval(expr);
} else {
// just eval as normal
var expr = params.fieldRef(field) + " " + operator + " " + value;
matches = eval(expr);
}
}
} else if( operator != null ){
switch(operator){
case "?":
matches = params.fieldTruthy(field);
break;
case "!":
matches = !params.fieldTruthy(field);
break;
case "^":
matches = params.fieldUndefined(field);
break;
}
} else {
matches = !params.fieldUndefined(field);
}
if( !matches ){
allDataMatches = false;
break;
}
} // for
return allDataMatches;
} // operandsMatch
// check data matches
var allDataMatches = operandsMatch({
name: "data",
fieldValue: function(field){
return element._private.data[field];
},
fieldRef: function(field){
return "element._private.data." + field;
},
fieldUndefined: function(field){
return element._private.data[field] === undefined;
},
fieldTruthy: function(field){
if( element._private.data[field] ){
return true;
}
return false;
}
});
if( !allDataMatches ){
return false;
}
// check metadata matches
var allMetaMatches = operandsMatch({
name: "meta",
fieldValue: function(field){
return element[field]();
},
fieldRef: function(field){
return "element." + field + "()";
},
fieldUndefined: function(field){
return element[field]() == undefined;
},
fieldTruthy: function(field){
if( element[field]() ){
return true;
}
return false;
}
});
if( !allMetaMatches ){
return false;
}
// check collection
if( query.collection != null ){
var matchesAny = query.collection._private.ids[ element.id() ] != null;
if( !matchesAny ){
return false;
}
}
// check filter function
if( query.filter != null && element.collection().filter( query.filter ).size() == 0 ){
return false;
}
// check parent/child relations
function confirmRelations( query, elements ){
if( query != null ){
var matches = false;
elements = elements(); // make elements functional so we save cycles if query == null
// query must match for at least one element (may be recursive)
for(var i = 0; i < elements.size(); i++){
if( queryMatches( query, elements.eq(i) ) ){
matches = true;
break;
}
}
return matches;
} else {
return true;
}
}
if (! confirmRelations(query.parent, function(){
return element.parent()
}) ){ return false }
if (! confirmRelations(query.ancestor, function(){
return element.parents()
}) ){ return false }
if (! confirmRelations(query.child, function(){
return element.children()
}) ){ return false }
if (! confirmRelations(query.descendant, function(){
return element.descendants()
}) ){ return false }
// we've reached the end, so we've matched everything for this query
return true;
}; // queryMatches
var selectorFunction = function(i, element){
for(var j = 0; j < self.length; j++){
var query = self[j];
if( queryMatches(query, element) ){
return true;
}
}
return false;
};
if( self._private.selectorText == null ){
selectorFunction = function(){ return true; };
}
var filteredCollection = collection.filter( selectorFunction );
return filteredCollection;
}; // filter
// ith query to string
$$.selfn.toString = $$.selfn.selector = function(){
var str = "";
function clean(obj){
if( $$.is.string(obj) ){
return obj;
}
return "";
}
function queryToString(query){
var str = "";
var group = clean(query.group);
str += group.substring(0, group.length - 1);
for(var j = 0; j < query.data.length; j++){
var data = query.data[j];
str += "[" + data.field + clean(data.operator) + clean(data.value) + "]"
}
for(var j = 0; j < query.meta.length; j++){
var meta = query.meta[j];
str += "{" + meta.field + clean(meta.operator) + clean(meta.value) + "}"
}
for(var j = 0; j < query.colonSelectors.length; j++){
var sel = query.colonSelectors[i];
str += sel;
}
for(var j = 0; j < query.ids.length; j++){
var sel = "#" + query.ids[i];
str += sel;
}
for(var j = 0; j < query.classes.length; j++){
var sel = "." + query.classes[i];
str += sel;
}
if( query.parent != null ){
str = queryToString( query.parent ) + " > " + str;
}
if( query.ancestor != null ){
str = queryToString( query.ancestor ) + " " + str;
}
if( query.child != null ){
str += " > " + queryToString( query.child );
}
if( query.descendant != null ){
str += " " + queryToString( query.descendant );
}
return str;
}
for(var i = 0; i < this.length; i++){
var query = this[i];
str += queryToString( query );
if( this.length > 1 && i < this.length - 1 ){
str += ", ";
}
}
return str;
};
})( cytoscape );
;(function($$){
function NullRenderer(options){
}
NullRenderer.prototype.notify = function(params){
};
$$("renderer", "null", NullRenderer);
})( cytoscape );
(function($$) {
var isTouch = ('ontouchstart' in window) || window.DocumentTouch && document instanceof DocumentTouch;
var time = function() { return Date.now(); } ;
var arrowShapes = {}; var nodeShapes = {};
var rendFunc = CanvasRenderer.prototype;
var panOrBoxSelectDelay = 400;
// Canvas layer constants
var CANVAS_LAYERS = 5, SELECT_BOX = 0, DRAG = 2, OVERLAY = 3, NODE = 4, BUFFER_COUNT = 2;
function CanvasRenderer(options) {
this.options = options;
this.data = {
select: [undefined, undefined, undefined, undefined, 0], // Coordinates for selection box, plus enabled flag
renderer: this, cy: options.cy, container: options.cy.container(),
canvases: new Array(CANVAS_LAYERS),
canvasRedrawReason: new Array(CANVAS_LAYERS),
canvasNeedsRedraw: new Array(CANVAS_LAYERS),
bufferCanvases: new Array(BUFFER_COUNT)
};
//--Pointer-related data
this.hoverData = {down: null, last: null,
downTime: null, triggerMode: null,
dragging: false,
initialPan: [null, null], capture: false};
this.timeoutData = {panTimeout: null};
this.dragData = {possibleDragElements: []};
this.touchData = {start: null, capture: false,
// These 3 fields related to tap, taphold events
startPosition: [null, null, null, null, null, null],
singleTouchStartTime: null,
singleTouchMoved: true,
now: [null, null, null, null, null, null],
earlier: [null, null, null, null, null, null] };
//--
//--Wheel-related data
this.zoomData = {freeToZoom: false, lastPointerX: null};
//--
this.redraws = 0;
this.bindings = [];
this.init();
for (var i = 0; i < CANVAS_LAYERS; i++) {
this.data.canvases[i] = document.createElement("canvas");
this.data.canvases[i].style.position = "absolute";
this.data.canvases[i].setAttribute("data-id", "layer" + i);
this.data.canvases[i].style.zIndex = String(CANVAS_LAYERS - i);
this.data.container.appendChild(this.data.canvases[i]);
this.data.canvasRedrawReason[i] = new Array();
this.data.canvasNeedsRedraw[i] = false;
}
this.data.canvases[NODE].setAttribute("data-id", "layer" + NODE + '-node');
this.data.canvases[SELECT_BOX].setAttribute("data-id", "layer" + SELECT_BOX + '-selectbox');
this.data.canvases[DRAG].setAttribute("data-id", "layer" + DRAG + '-drag');
this.data.canvases[OVERLAY].setAttribute("data-id", "layer" + OVERLAY + '-overlay');
for (var i = 0; i < BUFFER_COUNT; i++) {
this.data.bufferCanvases[i] = document.createElement("canvas");
this.data.bufferCanvases[i].style.position = "absolute";
this.data.bufferCanvases[i].setAttribute("data-id", "buffer" + i);
this.data.bufferCanvases[i].style.zIndex = String(-i - 1);
this.data.bufferCanvases[i].style.visibility = "hidden";
this.data.container.appendChild(this.data.bufferCanvases[i]);
}
var overlay = document.createElement('div');
this.data.container.appendChild( overlay );
this.data.overlay = overlay;
overlay.style.position = 'absolute';
overlay.style.zIndex = 1000;
if( options.showOverlay ){
var link = document.createElement('a');
overlay.appendChild( link );
this.data.link = link;
link.innerHTML = 'cytoscape.js';
link.style.font = '14px helvetica';
link.style.position = 'absolute';
link.style.right = 0;
link.style.bottom = 0;
link.style.padding = '1px 3px';
link.style.paddingLeft = '5px';
link.style.paddingTop = '5px';
link.style.opacity = 0;
link.style['-webkit-tap-highlight-color'] = 'transparent';
link.style.background = 'red';
link.href = 'http://cytoscape.github.io/cytoscape.js/';
link.target = '_blank';
}
this.hideEdgesOnViewport = options.hideEdgesOnViewport;
this.load();
}
CanvasRenderer.prototype.notify = function(params) {
if ( params.type == "destroy" ){
this.destroy();
return;
} else if (params.type == "add"
|| params.type == "remove"
|| params.type == "load"
) {
this.updateNodesCache();
this.updateEdgesCache();
}
if (params.type == "viewport") {
this.data.canvasNeedsRedraw[SELECT_BOX] = true;
this.data.canvasRedrawReason[SELECT_BOX].push("viewchange");
}
this.data.canvasNeedsRedraw[DRAG] = true; this.data.canvasRedrawReason[DRAG].push("notify");
this.data.canvasNeedsRedraw[NODE] = true; this.data.canvasRedrawReason[NODE].push("notify");
this.redraws++;
this.redraw();
};
CanvasRenderer.prototype.registerBinding = function(target, event, handler, useCapture){
this.bindings.push({
target: target,
event: event,
handler: handler,
useCapture: useCapture
});
target.addEventListener(event, handler, useCapture);
};
CanvasRenderer.prototype.destroy = function(){
this.destroyed = true;
for( var i = 0; i < this.bindings.length; i++ ){
var binding = this.bindings[i];
var b = binding;
b.target.removeEventListener(b.event, b.handler, b.useCapture);
}
};
CanvasRenderer.prototype.png = function(){
var data = this.data;
// Rasterize the layers, but only if container has nonzero size
if (this.data.container.clientHeight > 0
&& this.data.container.clientWidth > 0) {
context = data.bufferCanvases[1].getContext("2d");
context.globalCompositeOperation = "copy";
context.drawImage(data.canvases[4], 0, 0);
context.globalCompositeOperation = "source-over";
context.drawImage(data.canvases[2], 0, 0);
context.drawImage(data.canvases[0], 0, 0);
context = data.bufferCanvases[0].getContext("2d");
context.globalCompositeOperation = "copy";
context.drawImage(data.bufferCanvases[1], 0, 0);
}
var canvas = this.data.bufferCanvases[0];
return canvas.toDataURL("image/png");
};
// @O Initialization functions
{
CanvasRenderer.prototype.load = function() {
var r = this;
// helper function to determine which child nodes and inner edges
// of a compound node to be dragged as well as the grabbed and selected nodes
var addDescendantsToDrag = function(node, addSelected, dragElements) {
if (!addSelected)
{
var parents = node.parents();
// do not process descendants for this node,
// because those will be handled for the topmost selected parent
for (var i=0; i < parents.size(); i++)
{
if (parents[i]._private.selected)
{
return;
}
}
}
var innerNodes = node.descendants();
function hasNonAutoParent(ele){
while( ele.parent().nonempty() && ele.parent().id() !== node.id() ){
parent = ele.parent()[0];
var pstyle = parent._private.style;
if( pstyle.width.value !== 'auto' || pstyle.height.value !== 'auto' ){
return true;
}
ele = ele.parent();
}
return false;
}
// TODO do not drag hidden children & children of hidden children?
for (var i=0; i < innerNodes.size(); i++)
{
// if addSelected is true, then add node in any case,
// if not, then add only non-selected nodes
if ( (addSelected || !innerNodes[i]._private.selected) )
{
innerNodes[i]._private.rscratch.inDragLayer = true;
//innerNodes[i].trigger(new $$.Event(e, {type: "grab"}));
//innerNodes[i].trigger(event);
dragElements.push(innerNodes[i]);
for (var j=0; j < innerNodes[i]._private.edges.length; j++)
{
innerNodes[i]._private.edges[j]._private.rscratch.inDragLayer = true;
}
}
}
};
// adds the given nodes, and its edges to the drag layer
var addNodeToDrag = function(node, dragElements) {
node._private.grabbed = true;
node._private.rscratch.inDragLayer = true;
dragElements.push(node);
for (var i=0;i containerPageCoords[0] && e.pageX < containerPageCoords[0] + r.data.container.clientWidth
&& e.pageY > containerPageCoords[1] && e.pageY < containerPageCoords[1] + r.data.container.clientHeight) {
} else {
return;
}
}
var cy = r.data.cy;
var pos = r.projectIntoViewport(e.pageX, e.pageY);
var select = r.data.select;
var near = r.findNearestElement(pos[0], pos[1], true);
var last = r.hoverData.last;
var down = r.hoverData.down;
var disp = [pos[0] - select[2], pos[1] - select[3]];
var nodes = r.getCachedNodes();
var edges = r.getCachedEdges();
var draggedElements = r.dragData.possibleDragElements;
var shiftDown = e.shiftKey;
preventDefault = true;
// Mousemove event
{
var event = new $$.Event(e, {type: "mousemove"});
if (near != null) {
near.trigger(event);
} else if (near == null) {
cy.trigger(event);
}
}
// trigger context drag if rmouse down
if( r.hoverData.which === 3 ){
var cxtEvt = new $$.Event(e, {type: "cxtdrag"});
if( down ){
down.trigger( cxtEvt );
} else {
cy.trigger( cxtEvt );
}
r.hoverData.cxtDragged = true;
// Check if we are drag panning the entire graph
} else if (r.hoverData.dragging) {
preventDefault = true;
if( cy.panningEnabled() ){
var deltaP = {x: disp[0] * cy.zoom(), y: disp[1] * cy.zoom()};
cy.panBy( deltaP );
}
// Needs reproject due to pan changing viewport
pos = r.projectIntoViewport(e.pageX, e.pageY);
// Checks primary button down & out of time & mouse not moved much
} else if (select[4] == 1 && (down == null || down.isEdge())
&& ( !cy.boxSelectionEnabled() || +new Date - r.hoverData.downTime >= panOrBoxSelectDelay )
&& (Math.abs(select[3] - select[1]) + Math.abs(select[2] - select[0]) < 4)
&& cy.panningEnabled() ) {
r.hoverData.dragging = true;
select[4] = 0;
} else {
// deactivate bg on box selection
if (cy.boxSelectionEnabled() && Math.pow(select[2] - select[0], 2) + Math.pow(select[3] - select[1], 2) > 7 && select[4]){
clearTimeout( r.bgActiveTimeout );
}
if( down && down.isEdge() && down.active() ){ down.unactivate(); }
if (near != last) {
if (last) { last.trigger(new $$.Event(e, {type: "mouseout"})); }
if (near) { near.trigger(new $$.Event(e, {type: "mouseover"})); }
r.hoverData.last = near;
}
if ( down && down.isNode() && r.nodeIsDraggable(down) ) {
r.dragData.didDrag = true; // indicate that we actually did drag the node
var toTrigger = [];
for (var i=0; i 7 && select[4]) // not box selection
&& !r.hoverData.dragging // not panning
) {
// console.log('unselect all from bg');
//++clock+unselect
// var a = time();
cy.$(':selected').unselect();
//++clock+unselect
// console.log("unselect", time() - a);
if (draggedElements.length > 0) {
r.data.canvasNeedsRedraw[NODE] = true; r.data.canvasRedrawReason[NODE].push("De-select");
}
r.dragData.possibleDragElements = draggedElements = [];
}
// Click event
{
// console.log('trigger click et al');
if (Math.pow(select[2] - select[0], 2) + Math.pow(select[3] - select[1], 2) == 0) {
if (near != null) {
near
.trigger( new $$.Event(e, {type: "click"}) )
.trigger( new $$.Event(e, {type: "tap"}) )
.trigger( new $$.Event(e, {type: "vclick"}) )
;
} else if (near == null) {
cy
.trigger( new $$.Event(e, {type: "click"}) )
.trigger( new $$.Event(e, {type: "tap"}) )
.trigger( new $$.Event(e, {type: "vclick"}) )
;
}
}
}
// Mouseup event
{
// console.log('trigger mouseup et al');
if (near != null) {
near
.trigger(new $$.Event(e, {type: "mouseup"}))
.trigger(new $$.Event(e, {type: "tapend"}))
.trigger(new $$.Event(e, {type: "vmouseup"}))
;
} else if (near == null) {
cy
.trigger(new $$.Event(e, {type: "mouseup"}))
.trigger(new $$.Event(e, {type: "tapend"}))
.trigger(new $$.Event(e, {type: "vmouseup"}))
;
}
}
// Single selection
if (near == down && !r.dragData.didDrag) {
if (near != null && near._private.selectable) {
// console.log('single selection')
if( !shiftDown ){
cy.$(':selected').unselect();
}
if( near.selected() ){
near.unselect();
} else {
near.select();
}
updateAncestorsInDragLayer(near, false);
r.data.canvasNeedsRedraw[NODE] = true; r.data.canvasRedrawReason[NODE].push("sglslct");
}
// Ungrab single drag
} else if (near == down) {
if (near != null && near._private.grabbed) {
// console.log('ungrab single drag')
var grabbedEles = cy.$(':grabbed');
for(var i = 0; i < grabbedEles.length; i++){
var ele = grabbedEles[i];
ele._private.grabbed = false;
var sEdges = ele._private.edges;
for (var j=0;j 7 && select[4] ) {
// console.log("box selection");
if( !shiftDown ){
cy.$(':selected').unselect();
}
var newlySelected = [];
var box = r.getAllInBox(select[0], select[1], select[2], select[3]);
// console.log(box);
var event = new $$.Event(e, {type: "select"});
for (var i=0;i 0) {
r.data.canvasNeedsRedraw[NODE] = true; r.data.canvasRedrawReason[NODE].push("Selection");
}
}
// Cancel drag pan
r.hoverData.dragging = false;
if (!select[4]) {
// console.log('free at end', draggedElements)
var freeEvent = new $$.Event(e, {type: "free"});
for (var i=0;i 250) {
if (r.touchData.start) {
r.touchData.start.trigger(new $$.Event(e, {type: "taphold"}));
} else {
r.data.cy.trigger(new $$.Event(e, {type: "taphold"}));
cy.$(':selected').unselect();
}
// console.log("taphold");
}
}, 1000);
}
r.redraw();
}, false);
// console.log = function(m){ $('#console').append(''+m+'
'); };
r.registerBinding(window, "touchmove", function(e) {
var select = r.data.select;
var capture = r.touchData.capture; //if (!capture) { return; };
capture && e.preventDefault();
var cy = r.data.cy;
var nodes = r.getCachedNodes(); var edges = r.getCachedEdges();
var now = r.touchData.now; var earlier = r.touchData.earlier;
if (e.touches[0]) { var pos = r.projectIntoViewport(e.touches[0].pageX, e.touches[0].pageY); now[0] = pos[0]; now[1] = pos[1]; }
if (e.touches[1]) { var pos = r.projectIntoViewport(e.touches[1].pageX, e.touches[1].pageY); now[2] = pos[0]; now[3] = pos[1]; }
if (e.touches[2]) { var pos = r.projectIntoViewport(e.touches[2].pageX, e.touches[2].pageY); now[4] = pos[0]; now[5] = pos[1]; }
var disp = []; for (var j=0;j= 1.5 || distance2 >= 150 ){
r.touchData.cxt = false;
if( r.touchData.start ){ r.touchData.start.unactivate(); r.touchData.start = null; }
r.data.bgActivePosistion = undefined;
r.data.canvasNeedsRedraw[SELECT_BOX] = true;
var cxtEvt = new $$.Event(e, {type: "cxttapend"});
if( r.touchData.start ){
r.touchData.start.trigger( cxtEvt );
} else {
cy.trigger( cxtEvt );
}
}
}
if( capture && r.touchData.cxt ){
var cxtEvt = new $$.Event(e, {type: "cxtdrag"});
r.data.bgActivePosistion = undefined;
r.data.canvasNeedsRedraw[SELECT_BOX] = true;
if( r.touchData.start ){
r.touchData.start.trigger( cxtEvt );
} else {
cy.trigger( cxtEvt );
}
if( r.touchData.start ){ r.touchData.start._private.grabbed = false; }
r.touchData.cxtDragged = true;
//console.log('cxtdrag')
} else if( capture && e.touches[2] && cy.boxSelectionEnabled() ){
r.data.bgActivePosistion = undefined;
clearTimeout( this.threeFingerSelectTimeout );
this.lastThreeTouch = +new Date;
r.data.canvasNeedsRedraw[SELECT_BOX] = true;
r.data.canvasRedrawReason[SELECT_BOX].push("Touch moved, redraw selection box");
if( !select || select.length === 0 || select[0] === undefined ){
select[0] = (now[0] + now[2] + now[4])/3;
select[1] = (now[1] + now[3] + now[5])/3;
select[2] = (now[0] + now[2] + now[4])/3 + 1;
select[3] = (now[1] + now[3] + now[5])/3 + 1;
} else {
select[2] = (now[0] + now[2] + now[4])/3;
select[3] = (now[1] + now[3] + now[5])/3;
}
select[4] = 1;
} else if ( capture && e.touches[1] && cy.zoomingEnabled() && cy.panningEnabled() ) { // two fingers => pinch to zoom
r.data.bgActivePosistion = undefined;
r.data.canvasNeedsRedraw[SELECT_BOX] = true;
// console.log('touchmove ptz');
// (x2, y2) for fingers 1 and 2
var f1x2 = e.touches[0].pageX - offsetLeft, f1y2 = e.touches[0].pageY - offsetTop;
var f2x2 = e.touches[1].pageX - offsetLeft, f2y2 = e.touches[1].pageY - offsetTop;
// console.log( f1x2, f1y2 )
// console.log( f2x2, f2y2 )
var distance2 = distance( f1x2, f1y2, f2x2, f2y2 );
var factor = distance2 / distance1;
// console.log(distance2)
// console.log(factor)
if( factor != 1 && twoFingersStartInside){
// console.log(factor)
// console.log(distance2 + ' / ' + distance1);
// console.log('--');
// delta finger1
var df1x = f1x2 - f1x1;
var df1y = f1y2 - f1y1;
// delta finger 2
var df2x = f2x2 - f2x1;
var df2y = f2y2 - f2y1;
// translation is the normalised vector of the two fingers movement
// i.e. so pinching cancels out and moving together pans
var tx = (df1x + df2x)/2;
var ty = (df1y + df2y)/2;
// adjust factor by the speed multiplier
// var speed = 1.5;
// if( factor > 1 ){
// factor = (factor - 1) * speed + 1;
// } else {
// factor = 1 - (1 - factor) * speed;
// }
// now calculate the zoom
var zoom1 = cy.zoom();
var zoom2 = zoom1 * factor;
var pan1 = cy.pan();
// the model center point converted to the current rendered pos
var ctrx = modelCenter1[0] * zoom1 + pan1.x;
var ctry = modelCenter1[1] * zoom1 + pan1.y;
var pan2 = {
x: -zoom2/zoom1 * (ctrx - pan1.x - tx) + ctrx,
y: -zoom2/zoom1 * (ctry - pan1.y - ty) + ctry
};
// console.log(pan2);
// console.log(zoom2);
cy._private.zoom = zoom2;
cy._private.pan = pan2;
cy
.trigger('pan zoom')
.notify('viewport')
;
distance1 = distance2;
f1x1 = f1x2;
f1y1 = f1y2;
f2x1 = f2x2;
f2y1 = f2y2;
r.pinching = true;
}
// Re-project
if (e.touches[0]) { var pos = r.projectIntoViewport(e.touches[0].pageX, e.touches[0].pageY); now[0] = pos[0]; now[1] = pos[1]; }
if (e.touches[1]) { var pos = r.projectIntoViewport(e.touches[1].pageX, e.touches[1].pageY); now[2] = pos[0]; now[3] = pos[1]; }
if (e.touches[2]) { var pos = r.projectIntoViewport(e.touches[2].pageX, e.touches[2].pageY); now[4] = pos[0]; now[5] = pos[1]; }
} else if (e.touches[0]) {
var start = r.touchData.start;
var last = r.touchData.last;
if ( start != null && start._private.group == "nodes" && r.nodeIsDraggable(start)) {
var draggedEles = r.dragData.touchDragEles;
for( var k = 0; k < draggedEles.length; k++ ){
var draggedEle = draggedEles[k];
if( r.nodeIsDraggable(draggedEle) ){
r.dragData.didDrag = true;
draggedEle._private.position.x += disp[0];
draggedEle._private.position.y += disp[1];
}
}
( new $$.Collection(cy, draggedEles) )
.trigger( new $$.Event(e, {type: "drag"}) )
.trigger( new $$.Event(e, {type: "position"}) )
;
r.data.canvasNeedsRedraw[DRAG] = true;
r.data.canvasRedrawReason[DRAG].push("touchdrag node");
if (r.touchData.startPosition[0] == earlier[0]
&& r.touchData.startPosition[1] == earlier[1]) {
r.data.canvasNeedsRedraw[NODE] = true;
r.data.canvasRedrawReason[NODE].push("node drag started");
}
}
// Touchmove event
{
if (start != null) { start.trigger(new $$.Event(e, {type: "touchmove"})); }
if (start == null) {
var near = r.findNearestElement(now[0], now[1], true);
if (near != null) { near.trigger(new $$.Event(e, {type: "touchmove"})); }
if (near == null) { cy.trigger(new $$.Event(e, {type: "touchmove"})); }
}
if (near != last) {
if (last) { last.trigger(new $$.Event(e, {type: "touchout"})); }
if (near) { near.trigger(new $$.Event(e, {type: "touchover"})); }
}
r.touchData.last = near;
}
// Check to cancel taphold
for (var i=0;i 4) {
r.touchData.singleTouchMoved = true;
}
}
if ( capture && (start == null || start.isEdge()) && cy.panningEnabled() ) {
if( start ){
start.unactivate();
if( !r.data.bgActivePosistion ){
r.data.bgActivePosistion = {
x: now[0],
y: now[1]
};
}
r.data.canvasNeedsRedraw[SELECT_BOX] = true;
r.data.canvasRedrawReason[SELECT_BOX].push("bgactive");
}
cy.panBy({x: disp[0] * cy.zoom(), y: disp[1] * cy.zoom()});
r.swipePanning = true;
// Re-project
var pos = r.projectIntoViewport(e.touches[0].pageX, e.touches[0].pageY);
now[0] = pos[0]; now[1] = pos[1];
}
}
for (var j=0;j 0) {
r.data.canvasNeedsRedraw[NODE] = true; r.data.canvasRedrawReason[NODE].push("Selection");
}
}, 100);
}
if( !e.touches[1] ){
r.pinching = false;
}
var updateStartStyle = false;
if( start != null ){
start._private.active = false;
updateStartStyle = true;
start.trigger( new $$.Event(e, {type: "unactivate"}) );
}
if (e.touches[2]) {
r.data.bgActivePosistion = undefined;
} else if (e.touches[1]) {
} else if (e.touches[0]) {
// Last touch released
} else if (!e.touches[0]) {
r.data.bgActivePosistion = undefined;
if (start != null ) {
if (start._private.grabbed == true) {
start._private.grabbed = false;
start.trigger(new $$.Event(e, {type: "free"}));
start._private.rscratch.inDragLayer = false;
}
var sEdges = start._private.edges;
for (var j=0;j
this.sqDistanceToQuadraticBezier(x, y,
rs.startX,
rs.startY,
rs.cp2ax,
rs.cp2ay,
rs.selfEdgeMidX,
rs.selfEdgeMidY)))
||
(this.inBezierVicinity(x, y,
rs.selfEdgeMidX,
rs.selfEdgeMidY,
rs.cp2cx,
rs.cp2cy,
rs.endX,
rs.endY,
Math.pow(edges[i]._private.style["width"].value/2, 2))
&&
(Math.pow(edges[i]._private.style["width"].value/2, 2) + edgeThreshold >
this.sqDistanceToQuadraticBezier(x, y,
rs.selfEdgeMidX,
rs.selfEdgeMidY,
rs.cp2cx,
rs.cp2cy,
rs.endX,
rs.endY))))
{ addCurrentEdge = true; }
} else if (rs.edgeType == "straight") {
if (this.inLineVicinity(x, y, rs.startX, rs.startY, rs.endX, rs.endY, edges[i]._private.style["width"].value * 2)
&&
Math.pow(edges[i]._private.style["width"].value / 2, 2) + edgeThreshold >
this.sqDistanceToFiniteLine(x, y,
rs.startX,
rs.startY,
rs.endX,
rs.endY))
{ addCurrentEdge = true; }
} else if (rs.edgeType == "bezier") {
if (this.inBezierVicinity(x, y,
rs.startX,
rs.startY,
rs.cp2x,
rs.cp2y,
rs.endX,
rs.endY,
Math.pow(edges[i]._private.style["width"].value / 2, 2))
&&
(Math.pow(edges[i]._private.style["width"].value / 2 , 2) + edgeThreshold >
this.sqDistanceToQuadraticBezier(x, y,
rs.startX,
rs.startY,
rs.cp2x,
rs.cp2y,
rs.endX,
rs.endY)))
{ addCurrentEdge = true; }
}
if (!near.length || near[near.length - 1] != edges[i]) {
if ((arrowShapes[edges[i]._private.style["source-arrow-shape"].value].roughCollide(x, y,
edges[i]._private.rscratch.arrowStartX, edges[i]._private.rscratch.arrowStartY,
this.getArrowWidth(edges[i]._private.style["width"].value),
this.getArrowHeight(edges[i]._private.style["width"].value),
[edges[i]._private.rscratch.arrowStartX - edges[i].source()[0]._private.position.x,
edges[i]._private.rscratch.arrowStartY - edges[i].source()[0]._private.position.y], 0)
&&
arrowShapes[edges[i]._private.style["source-arrow-shape"].value].collide(x, y,
edges[i]._private.rscratch.arrowStartX, edges[i]._private.rscratch.arrowStartY,
this.getArrowWidth(edges[i]._private.style["width"].value),
this.getArrowHeight(edges[i]._private.style["width"].value),
[edges[i]._private.rscratch.arrowStartX - edges[i].source()[0]._private.position.x,
edges[i]._private.rscratch.arrowStartY - edges[i].source()[0]._private.position.y], 0))
||
(arrowShapes[edges[i]._private.style["target-arrow-shape"].value].roughCollide(x, y,
edges[i]._private.rscratch.arrowEndX, edges[i]._private.rscratch.arrowEndY,
this.getArrowWidth(edges[i]._private.style["width"].value),
this.getArrowHeight(edges[i]._private.style["width"].value),
[edges[i]._private.rscratch.arrowEndX - edges[i].target()[0]._private.position.x,
edges[i]._private.rscratch.arrowEndY - edges[i].target()[0]._private.position.y], 0)
&&
arrowShapes[edges[i]._private.style["target-arrow-shape"].value].collide(x, y,
edges[i]._private.rscratch.arrowEndX, edges[i]._private.rscratch.arrowEndY,
this.getArrowWidth(edges[i]._private.style["width"].value),
this.getArrowHeight(edges[i]._private.style["width"].value),
[edges[i]._private.rscratch.arrowEndX - edges[i].target()[0]._private.position.x,
edges[i]._private.rscratch.arrowEndY - edges[i].target()[0]._private.position.y], 0)))
{ addCurrentEdge = true; }
}
if (addCurrentEdge) {
if (visibleElementsOnly) {
// For edges, make sure the edge is visible/has nonzero opacity,
// then also make sure both source and target nodes are visible/have
// nonzero opacity
var source = data.cy.getElementById(edges[i]._private.data.source)
var target = data.cy.getElementById(edges[i]._private.data.target)
if (edges[i]._private.style["opacity"].value != 0
&& edges[i]._private.style["visibility"].value == "visible"
&& source._private.style["opacity"].value != 0
&& source._private.style["visibility"].value == "visible"
&& target._private.style["opacity"].value != 0
&& target._private.style["visibility"].value == "visible") {
near.push(edges[i]);
}
} else {
near.push(edges[i]);
}
}
}
near.sort( zOrderSort );
if (near.length > 0) { return near[ near.length - 1 ]; } else { return null; }
}
// "Give me everything from this box"
CanvasRenderer.prototype.getAllInBox = function(x1, y1, x2, y2) {
var data = this.data; var nodes = this.getCachedNodes(); var edges = this.getCachedEdges(); var box = [];
var x1c = Math.min(x1, x2); var x2c = Math.max(x1, x2); var y1c = Math.min(y1, y2); var y2c = Math.max(y1, y2); x1 = x1c; x2 = x2c; y1 = y1c; y2 = y2c; var heur;
for (var i=0;i= 0; i--)
{
if (elements[i].isNode() &&
(elements[i]._private.style["width"].value == "auto" ||
elements[i]._private.style["height"].value == "auto") &&
elements[i].children().length > 0)
{
var node = elements[i];
var bounds = this.calcCompoundBounds(node);
//console.log("%s : %o", node._private.data.id, bounds);
node._private.position.x = bounds.x;
node._private.position.y = bounds.y;
node._private.autoWidth = bounds.width;
node._private.autoHeight = bounds.height;
}
}
};
/**
* Calculates rectangular bounds of a given compound node.
* If the node is hidden, or none of its children is visible,
* then instead of calculating the bounds, returns the last
* calculated value.
*
* @param node a node with children (compound node)
* @return {{x: number, y: number, width: number, height: number}}
*/
CanvasRenderer.prototype.calcCompoundBounds = function(node)
{
// TODO assuming rectangular compounds, we may add support for other shapes in the future
// this selection doesn't work if parent is invisible
//var children = node.children(":visible").not(":removed");
// consider only not removed children
var children = node.descendants().not(":removed");
// TODO instead of last calculated width & height define a default compound node size?
// last calculated bounds
var bounds = {x: node._private.position.x,
y: node._private.position.y,
width: node._private.autoWidth,
height: node._private.autoHeight};
// check node visibility
if (node._private.style["visibility"].value != "visible")
{
// do not calculate bounds for invisible compounds,
// just return last calculated values
return bounds;
}
var visibleChildren = [];
// find out visible children
for (var i=0; i < children.size(); i++)
{
if (children[i]._private.style["visibility"].value == "visible")
{
visibleChildren.push(children[i]);
}
}
if (visibleChildren.length == 0)
{
// no visible children, just return last calculated values
return bounds;
}
// process only visible children
children = visibleChildren;
// find the leftmost, rightmost, topmost, and bottommost child node positions
var leftBorder = this.borderValue(children, "left");
var rightBorder = this.borderValue(children, "right");
var topBorder = this.borderValue(children, "top");
var bottomBorder = this.borderValue(children, "bottom");
// take padding values into account in addition to border values
var padding = this.getNodePadding(node);
var x = (leftBorder - padding.left + rightBorder + padding.right) / 2;
var y = (topBorder - padding.top + bottomBorder + padding.bottom) / 2;
var width = (rightBorder - leftBorder) + padding.left + padding.right;
var height = (bottomBorder - topBorder) + padding.top + padding.bottom;
// it is not possible to use the function boundingBox() before
// actually rendering the graph
// var bBox = children.boundingBox();
//
// var x = (bBox.x1 + bBox.x2) / 2;
// var y = (bBox.y1 + bBox.y2) / 2;
// var width = bBox.width;
// var height = bBox.height;
bounds = {x: x,
y: y,
width: width,
height: height};
return bounds;
};
/**
* Calculates the leftmost, rightmost, topmost or bottommost point for the given
* set of nodes. If the type parameter is "left" (or "right"), then the min (or
* the max) x-coordinate value will be returned. If the type is "top" (or "bottom")
* then the min (or the max) y-coordinate value will be returned.
*
* This function is designed to help determining the bounds (bounding box) of
* compound nodes.
*
* @param nodes set of nodes
* @param type "left", "right", "top", "bottom"
* @return {number} border value for the specified type
*/
CanvasRenderer.prototype.borderValue = function(nodes, type)
{
var nodeVals, labelVals;
var minValue = 1/0, maxValue = -1/0;
var r = this;
// helper function to determine node position and dimensions
var calcNodePosAndDim = function(node) {
var values = {};
values.x = node._private.position.x;
values.y = node._private.position.y;
//values.width = r.getNodeWidth(node);
//values.height = r.getNodeHeight(node);
values.width = node.outerWidth();
values.height = node.outerHeight();
return values;
};
// helper function to determine label width
var getLabelWidth = function(node)
{
var text = String(node._private.style["content"].value);
var textTransform = node._private.style["text-transform"].value;
if (textTransform == "none") {
} else if (textTransform == "uppercase") {
text = text.toUpperCase();
} else if (textTransform == "lowercase") {
text = text.toLowerCase();
}
// TODO width doesn't measure correctly without actually rendering
var context = r.data.canvases[4].getContext("2d");
return context.measureText(text).width;
};
// helper function to determine label position and dimensions
var calcLabelPosAndDim = function(node) {
var values = {};
var nodeWidth = r.getNodeWidth(node);
var nodeHeight = r.getNodeHeight(node);
values.height = node._private.style["font-size"].value;
// TODO ignoring label width for now, it may be a good idea to do so,
// since longer label texts may increase the node size unnecessarily
//values.width = getLabelWidth(node);
values.width = values.height;
var textHalign = node._private.style["text-halign"].strValue;
if (textHalign == "left") {
values.x = node._private.position.x - nodeWidth / 2;
values.left = values.x - values.width;
values.right = values.x;
} else if (textHalign == "right") {
values.x = node._private.position.x + nodeWidth / 2;
values.left = values.x;
values.right = values.x + values.width;
} else { //if (textHalign == "center")
values.x = node._private.position.x;
values.left = values.x - values.width / 2;
values.right = values.x + values.width / 2;
}
var textValign = node._private.style["text-valign"].strValue;
if (textValign == "top") {
values.y = node._private.position.y - nodeHeight / 2;
values.top = values.y - values.height;
values.bottom = values.y;
} else if (textValign == "bottom") {
values.y = node._private.position.y + nodeHeight / 2;
values.top = values.y;
values.bottom = values.y + values.height;
} else { // if (textValign == "middle" || textValign == "center")
values.y = node._private.position.y;
values.top = values.y - values.height / 2;
values.bottom = values.y + values.height / 2;
}
return values;
};
// find out border values by iterating given nodes
for (i = 0; i < nodes.length; i++)
{
nodeVals = calcNodePosAndDim(nodes[i]);
labelVals = calcLabelPosAndDim(nodes[i]);
if (type == "left")
{
var leftBorder = Math.min(nodeVals.x - nodeVals.width / 2,
labelVals.left);
if (leftBorder < minValue)
{
minValue = leftBorder;
}
}
else if (type == "right")
{
var rightBorder = Math.max(nodeVals.x + nodeVals.width / 2,
labelVals.right);
if (rightBorder > maxValue)
{
maxValue = rightBorder;
}
}
else if (type == "top")
{
var topBorder = Math.min(nodeVals.y - nodeVals.height / 2,
labelVals.top);
if (topBorder < minValue)
{
minValue = topBorder;
}
}
else if (type == "bottom")
{
var bottomBorder = Math.max(nodeVals.y + nodeVals.height / 2,
labelVals.bottom);
if (bottomBorder > maxValue)
{
maxValue = bottomBorder;
}
}
}
// return the border value according to the type
if ((type == "left") || (type == "top"))
{
return minValue;
}
else
{
return maxValue;
}
};
/**
* Returns the width of the given node. If the width is set to auto,
* returns the value of the autoWidth field.
*
* @param node a node
* @return {number} width of the node
*/
CanvasRenderer.prototype.getNodeWidth = function(node)
{
if (node._private.style["width"].value == "auto" ||
node._private.style["height"].value == "auto")
{
return node._private.autoWidth;
}
else
{
return node._private.style["width"].value;
}
};
/**
* Returns the height of the given node. If the height is set to auto,
* returns the value of the autoHeight field.
*
* @param node a node
* @return {number} width of the node
*/
CanvasRenderer.prototype.getNodeHeight = function(node)
{
if (node._private.style["width"].value == "auto" ||
node._private.style["height"].value == "auto")
{
return node._private.autoHeight;
}
else
{
return node._private.style["height"].value;
}
};
/**
* Returns the shape of the given node. If the height or width of the given node
* is set to auto, the node is considered to be a compound.
*
* @param node a node
* @return {String} shape of the node
*/
CanvasRenderer.prototype.getNodeShape = function(node)
{
// TODO only allow rectangle for a compound node?
// if (node._private.style["width"].value == "auto" ||
// node._private.style["height"].value == "auto")
// {
// return "rectangle";
// }
var shape = node._private.style["shape"].value;
if( node.isParent() ){
if( shape === 'rectangle' || shape === 'roundrectangle' ){
return shape;
} else {
return 'rectangle';
}
}
return shape;
};
CanvasRenderer.prototype.getNodePadding = function(node)
{
var left = node._private.style["padding-left"].value;
var right = node._private.style["padding-right"].value;
var top = node._private.style["padding-top"].value;
var bottom = node._private.style["padding-bottom"].value;
if (isNaN(left))
{
left = 0;
}
if (isNaN(right))
{
right = 0;
}
if (isNaN(top))
{
top = 0;
}
if (isNaN(bottom))
{
bottom = 0;
}
return {left : left,
right : right,
top : top,
bottom : bottom};
};
// @O Keyboard functions
{
}
// @O Drawing functions
{
// Resize canvas
CanvasRenderer.prototype.matchCanvasSize = function(container) {
var data = this.data; var width = container.clientWidth; var height = container.clientHeight;
var canvas, canvasWidth = width, canvasHeight = height;
if ('devicePixelRatio' in window) {
canvasWidth *= devicePixelRatio;
canvasHeight *= devicePixelRatio;
}
for (var i = 0; i < CANVAS_LAYERS; i++) {
canvas = data.canvases[i];
if (canvas.width !== canvasWidth || canvas.height !== canvasHeight) {
canvas.width = canvasWidth;
canvas.height = canvasHeight;
canvas.style.width = width + 'px';
canvas.style.height = height + 'px';
}
}
for (var i = 0; i < BUFFER_COUNT; i++) {
canvas = data.bufferCanvases[i];
if (canvas.width !== canvasWidth || canvas.height !== canvasHeight) {
canvas.width = canvasWidth;
canvas.height = canvasHeight;
}
}
this.data.overlay.style.width = width + 'px';
this.data.overlay.style.height = height + 'px';
}
// helper function for the sort operation
var elementDepth = function(ele) {
if (ele._private.group == "nodes")
{
return ele.parents().size();
}
else if (ele._private.group == "edges")
{
return Math.max(ele.source()[0].parents().size(),
ele.target()[0].parents().size());
}
else
{
return 0;
}
};
CanvasRenderer.prototype.getCachedZSortedEles = function(){
var lastNodes = this.lastZOrderCachedNodes;
var lastEdges = this.lastZOrderCachedEdges;
var nodes = this.getCachedNodes();
var edges = this.getCachedEdges();
var eles = [];
if( !lastNodes || !lastEdges || lastNodes !== nodes || lastEdges !== edges ){
//console.time('cachezorder')
for( var i = 0; i < nodes.length; i++ ){
eles.push( nodes[i] );
}
for( var i = 0; i < edges.length; i++ ){
eles.push( edges[i] );
}
eles.sort( zOrderSort );
this.cachedZSortedEles = eles;
//console.log('make cache')
//console.timeEnd('cachezorder')
} else {
eles = this.cachedZSortedEles;
//console.log('read cache')
}
this.lastZOrderCachedNodes = nodes;
this.lastZOrderCachedEdges = edges;
return eles;
};
var zOrderSort = function(a, b) {
var result = a._private.style["z-index"].value
- b._private.style["z-index"].value;
var depthA = 0;
var depthB = 0;
// no need to calculate element depth if there is no compound node
if ( a.cy().hasCompoundNodes() )
{
depthA = elementDepth(a);
depthB = elementDepth(b);
}
// if both elements has same depth,
// then edges should be drawn first
if (depthA - depthB === 0)
{
// "a" is a node, it should be drawn later
if (a._private.group === "nodes"
&& b._private.group === "edges")
{
return 1;
}
// "a" is an edge, it should be drawn first
else if (a._private.group === "edges"
&& b._private.group === "nodes")
{
return -1;
}
// both nodes or both edges
else
{
if( result === 0 ){ // same z-index => compare indices in the core (order added to graph w/ last on top)
return a._private.index - b._private.index;
} else {
return result;
}
}
}
// elements on different level
else
{
// deeper element should be drawn later
return depthA - depthB;
}
// return zero if z-index values are not the same
return 0;
};
CanvasRenderer.prototype.renderTo = function( cxt, zoom, pan ){
this.redraw( cxt, true, zoom, pan );
};
// Redraw frame
CanvasRenderer.prototype.redraw = function( forcedContext, drawAll, forcedZoom, forcedPan ) {
var r = this;
if( this.averageRedrawTime === undefined ){ this.averageRedrawTime = 0; }
var minRedrawLimit = 1000/60; // people can't see much better than 60fps
var maxRedrawLimit = 1000; // don't cap max b/c it's more important to be responsive than smooth
var redrawLimit = this.averageRedrawTime; // estimate the ideal redraw limit based on how fast we can draw
redrawLimit = Math.max(minRedrawLimit, redrawLimit);
redrawLimit = Math.min(redrawLimit, maxRedrawLimit);
//console.log('--\nideal: %i; effective: %i', this.averageRedrawTime, redrawLimit);
if( this.lastDrawTime === undefined ){ this.lastDrawTime = 0; }
var nowTime = +new Date;
var timeElapsed = nowTime - this.lastDrawTime;
var callAfterLimit = timeElapsed >= redrawLimit;
if( !forcedContext ){
if( !callAfterLimit ){
clearTimeout( this.redrawTimeout );
this.redrawTimeout = setTimeout(function(){
r.redraw();
}, redrawLimit);
return;
}
this.lastDrawTime = nowTime;
}
// start on thread ready
setTimeout(function(){
var startTime = nowTime;
var looperMax = 100;
//console.log('-- redraw --')
// console.time('init'); for( var looper = 0; looper <= looperMax; looper++ ){
var cy = r.data.cy; var data = r.data;
var nodes = r.getCachedNodes(); var edges = r.getCachedEdges();
r.matchCanvasSize(data.container);
var zoom = cy.zoom();
var effectiveZoom = forcedZoom !== undefined ? forcedZoom : zoom;
var pan = cy.pan();
var effectivePan = {
x: pan.x,
y: pan.y
};
if( forcedPan ){
effectivePan = forcedPan;
}
if( 'devicePixelRatio' in window ){
effectiveZoom *= devicePixelRatio;
effectivePan.x *= devicePixelRatio;
effectivePan.y *= devicePixelRatio;
}
var elements = [];
for( var i = 0; i < nodes.length; i++ ){
elements.push( nodes[i] );
}
for( var i = 0; i < edges.length; i++ ){
elements.push( edges[i] );
}
// } console.timeEnd('init')
if (data.canvasNeedsRedraw[DRAG] || data.canvasNeedsRedraw[NODE] || drawAll) {
//NB : VERY EXPENSIVE
//console.time('edgectlpts'); for( var looper = 0; looper <= looperMax; looper++ ){
if( r.hideEdgesOnViewport && (r.pinching || r.hoverData.dragging || r.data.wheel || r.swipePanning) ){
} else {
r.findEdgeControlPoints(edges);
}
//} console.timeEnd('edgectlpts')
// console.time('sort'); for( var looper = 0; looper <= looperMax; looper++ ){
var elements = r.getCachedZSortedEles();
// } console.timeEnd('sort')
// console.time('updatecompounds'); for( var looper = 0; looper <= looperMax; looper++ ){
// no need to update graph if there is no compound node
if ( cy.hasCompoundNodes() )
{
r.updateAllCompounds(elements);
}
// } console.timeEnd('updatecompounds')
}
var elesInDragLayer;
var elesNotInDragLayer;
var element;
// console.time('drawing'); for( var looper = 0; looper <= looperMax; looper++ ){
if (data.canvasNeedsRedraw[NODE] || drawAll) {
// console.log("redrawing node layer", data.canvasRedrawReason[NODE]);
if( !elesInDragLayer || !elesNotInDragLayer ){
elesInDragLayer = [];
elesNotInDragLayer = [];
for (var index = 0; index < elements.length; index++) {
element = elements[index];
if ( element._private.rscratch.inDragLayer ) {
elesInDragLayer.push( element );
} else {
elesNotInDragLayer.push( element );
}
}
}
var context = forcedContext || data.canvases[NODE].getContext("2d");
context.setTransform(1, 0, 0, 1, 0, 0);
context.clearRect(0, 0, context.canvas.width, context.canvas.height);
if( !drawAll ){
context.translate(effectivePan.x, effectivePan.y);
context.scale(effectiveZoom, effectiveZoom);
}
if( forcedPan ){
context.translate(forcedPan.x, forcedPan.y);
}
if( forcedZoom ){
context.scale(forcedZoom, forcedZoom);
}
for (var index = 0; index < elesNotInDragLayer.length; index++) {
element = elesNotInDragLayer[index];
if (element._private.group == "nodes") {
r.drawNode(context, element);
} else if (element._private.group == "edges") {
r.drawEdge(context, element);
}
}
for (var index = 0; index < elesNotInDragLayer.length; index++) {
element = elesNotInDragLayer[index];
if (element._private.group == "nodes") {
r.drawNodeText(context, element);
} else if (element._private.group == "edges") {
r.drawEdgeText(context, element);
}
// draw the overlay
if (element._private.group == "nodes") {
r.drawNode(context, element, true);
} else if (element._private.group == "edges") {
r.drawEdge(context, element, true);
}
}
if( !drawAll ){
data.canvasNeedsRedraw[NODE] = false; data.canvasRedrawReason[NODE] = [];
}
}
if (data.canvasNeedsRedraw[DRAG] || drawAll) {
// console.log("redrawing drag layer", data.canvasRedrawReason[DRAG]);
if( !elesInDragLayer || !elesNotInDragLayer ){
elesInDragLayer = [];
elesNotInDragLayer = [];
for (var index = 0; index < elements.length; index++) {
element = elements[index];
if ( element._private.rscratch.inDragLayer ) {
elesInDragLayer.push( element );
} else {
elesNotInDragLayer.push( element );
}
}
}
var context = forcedContext || data.canvases[DRAG].getContext("2d");
if( !drawAll ){
context.setTransform(1, 0, 0, 1, 0, 0);
context.clearRect(0, 0, context.canvas.width, context.canvas.height);
context.translate(effectivePan.x, effectivePan.y);
context.scale(effectiveZoom, effectiveZoom);
}
if( forcedPan ){
context.translate(forcedPan.x, forcedPan.y);
}
if( forcedZoom ){
context.scale(forcedZoom, forcedZoom);
}
var element;
for (var index = 0; index < elesInDragLayer.length; index++) {
element = elesInDragLayer[index];
if (element._private.group == "nodes") {
r.drawNode(context, element);
} else if (element._private.group == "edges") {
r.drawEdge(context, element);
}
}
for (var index = 0; index < elesInDragLayer.length; index++) {
element = elesInDragLayer[index];
if (element._private.group == "nodes") {
r.drawNodeText(context, element);
} else if (element._private.group == "edges") {
r.drawEdgeText(context, element);
}
// draw the overlay
if (element._private.group == "nodes") {
r.drawNode(context, element, true);
} else if (element._private.group == "edges") {
r.drawEdge(context, element, true);
}
}
if( !drawAll ){
data.canvasNeedsRedraw[DRAG] = false; data.canvasRedrawReason[DRAG] = [];
}
}
if (data.canvasNeedsRedraw[SELECT_BOX]) {
// console.log("redrawing selection box", data.canvasRedrawReason[SELECT_BOX]);
var context = forcedContext || data.canvases[SELECT_BOX].getContext("2d");
if( !drawAll ){
context.setTransform(1, 0, 0, 1, 0, 0);
context.clearRect(0, 0, context.canvas.width, context.canvas.height);
context.translate(effectivePan.x, effectivePan.y);
context.scale(effectiveZoom, effectiveZoom);
}
if( forcedPan ){
context.translate(forcedPan.x, forcedPan.y);
}
if( forcedZoom ){
context.scale(forcedZoom, forcedZoom);
}
var coreStyle = cy.style()._private.coreStyle;
if (data.select[4] == 1) {
var zoom = data.cy.zoom();
var borderWidth = coreStyle["selection-box-border-width"].value / zoom;
context.lineWidth = borderWidth;
context.fillStyle = "rgba("
+ coreStyle["selection-box-color"].value[0] + ","
+ coreStyle["selection-box-color"].value[1] + ","
+ coreStyle["selection-box-color"].value[2] + ","
+ coreStyle["selection-box-opacity"].value + ")";
context.fillRect(
data.select[0],
data.select[1],
data.select[2] - data.select[0],
data.select[3] - data.select[1]);
if (borderWidth > 0) {
context.strokeStyle = "rgba("
+ coreStyle["selection-box-border-color"].value[0] + ","
+ coreStyle["selection-box-border-color"].value[1] + ","
+ coreStyle["selection-box-border-color"].value[2] + ","
+ coreStyle["selection-box-opacity"].value + ")";
context.strokeRect(
data.select[0],
data.select[1],
data.select[2] - data.select[0],
data.select[3] - data.select[1]);
}
}
if( data.bgActivePosistion ){
var zoom = data.cy.zoom();
var pos = data.bgActivePosistion;
context.fillStyle = "rgba("
+ coreStyle["active-bg-color"].value[0] + ","
+ coreStyle["active-bg-color"].value[1] + ","
+ coreStyle["active-bg-color"].value[2] + ","
+ coreStyle["active-bg-opacity"].value + ")";
context.beginPath();
context.arc(pos.x, pos.y, coreStyle["active-bg-size"].pxValue / zoom, 0, 2 * Math.PI);
context.fill();
}
if( !drawAll ){
data.canvasNeedsRedraw[SELECT_BOX] = false; data.canvasRedrawReason[SELECT_BOX] = [];
}
}
if( r.options.showOverlay ){
var context = data.canvases[OVERLAY].getContext("2d");
context.lineJoin = 'round';
context.font = '14px helvetica';
context.strokeStyle = '#fff';
context.lineWidth = '4';
context.fillStyle = '#666';
context.textAlign = 'right';
var text = 'cytoscape.js';
var w = context.canvas.width;
var h = context.canvas.height;
var p = 4;
var tw = context.measureText(text).width;
var th = 14;
context.clearRect(0, 0, w, h);
context.strokeText(text, w - p, h - p);
context.fillText(text, w - p, h - p);
data.overlayDrawn = true;
}
// } console.timeEnd('drawing')
var endTime = +new Date;
if( r.averageRedrawTime === undefined ){
r.averageRedrawTime = endTime - startTime;
}
// use a weighted average with a bias from the previous average so we don't spike so easily
r.averageRedrawTime = r.averageRedrawTime/2 + (endTime - startTime)/2;
//console.log('actual: %i, average: %i', endTime - startTime, this.averageRedrawTime);
if( !forcedContext && !r.initrender ){
r.initrender = true;
cy.trigger('initrender');
}
// end on thread ready
}, 0);
};
var imageCache = {};
// Discard after 5 min. of disuse
var IMAGE_KEEP_TIME = 30 * 300; // 300frames@30fps, or. 5min
CanvasRenderer.prototype.getCachedImage = function(url, onLoadRedraw) {
if (imageCache[url] && imageCache[url].image) {
// Reset image discard timer
imageCache[url].keepTime = IMAGE_KEEP_TIME;
return imageCache[url].image;
}
var imageContainer = imageCache[url];
if (imageContainer == undefined) {
imageCache[url] = new Object();
imageCache[url].image = new Image();
imageCache[url].image.onload = onLoadRedraw;
imageCache[url].image.src = url;
// Initialize image discard timer
imageCache[url].keepTime = IMAGE_KEEP_TIME;
imageContainer = imageCache[url];
}
return imageContainer.image;
}
// Attempt to replace the image object with a canvas buffer to solve zooming problem
CanvasRenderer.prototype.swapCachedImage = function(url) {
if (imageCache[url]) {
if (imageCache[url].image
&& imageCache[url].image.complete) {
var image = imageCache[url].image;
var buffer = document.createElement("canvas");
buffer.width = image.width;
buffer.height = image.height;
buffer.getContext("2d").drawImage(image,
0, 0
);
imageCache[url].image = buffer;
imageCache[url].swappedWithCanvas = true;
return buffer;
} else {
return null;
}
} else {
return null;
}
}
CanvasRenderer.prototype.updateImageCaches = function() {
for (var url in imageCache) {
if (imageCache[url].keepTime <= 0) {
if (imageCache[url].image != undefined) {
imageCache[url].image.src = undefined;
imageCache[url].image = undefined;
}
imageCache[url] = undefined;
} else {
imageCache[url] -= 1;
}
}
}
CanvasRenderer.prototype.drawImage = function(context, x, y, widthScale, heightScale, rotationCW, image) {
image.widthScale = 0.5;
image.heightScale = 0.5;
image.rotate = rotationCW;
var finalWidth; var finalHeight;
canvas.drawImage(image, x, y);
}
// Draw edge
CanvasRenderer.prototype.drawEdge = function(context, edge, drawOverlayInstead) {
if( this.hideEdgesOnViewport && (this.dragData.didDrag || this.pinching || this.hoverData.dragging || this.data.wheel || this.swipePanning) ){ return; } // save cycles on pinching
var startNode, endNode;
startNode = edge.source()[0];
endNode = edge.target()[0];
if (edge._private.style["visibility"].value != "visible"
|| startNode._private.style["visibility"].value != "visible"
|| endNode._private.style["visibility"].value != "visible") {
return;
}
var overlayPadding = edge._private.style["overlay-padding"].value;
var overlayOpacity = edge._private.style["overlay-opacity"].value;
var overlayColor = edge._private.style["overlay-color"].value;
// Edge color & opacity
if( drawOverlayInstead ){
context.strokeStyle = "rgba( " + overlayColor[0] + ", " + overlayColor[1] + ", " + overlayColor[2] + ", " + overlayOpacity + " )";
context.lineCap = "round";
if( edge._private.rscratch.edgeType == "self"){
context.lineCap = "butt";
}
} else {
context.strokeStyle = "rgba("
+ edge._private.style["line-color"].value[0] + ","
+ edge._private.style["line-color"].value[1] + ","
+ edge._private.style["line-color"].value[2] + ","
+ edge._private.style.opacity.value + ")";
}
// Edge line width
if (edge._private.style["width"].value <= 0) {
return;
}
var edgeWidth = edge._private.style["width"].value + (drawOverlayInstead ? 2 * overlayPadding : 0);
var lineStyle = drawOverlayInstead ? "solid" : edge._private.style["line-style"].value;
context.lineWidth = edgeWidth;
this.findEndpoints(edge);
if (edge._private.rscratch.edgeType == "self") {
var details = edge._private.rscratch;
this.drawStyledEdge(edge, context, [details.startX, details.startY, details.cp2ax,
details.cp2ay, details.selfEdgeMidX, details.selfEdgeMidY],
lineStyle,
edgeWidth);
this.drawStyledEdge(edge, context, [details.selfEdgeMidX, details.selfEdgeMidY,
details.cp2cx, details.cp2cy, details.endX, details.endY],
lineStyle,
edgeWidth);
} else if (edge._private.rscratch.edgeType == "straight") {
var nodeDirectionX = endNode._private.position.x - startNode._private.position.x;
var nodeDirectionY = endNode._private.position.y - startNode._private.position.y;
var edgeDirectionX = edge._private.rscratch.endX - edge._private.rscratch.startX;
var edgeDirectionY = edge._private.rscratch.endY - edge._private.rscratch.startY;
if (nodeDirectionX * edgeDirectionX
+ nodeDirectionY * edgeDirectionY < 0) {
edge._private.rscratch.straightEdgeTooShort = true;
} else {
var details = edge._private.rscratch;
this.drawStyledEdge(edge, context, [details.startX, details.startY,
details.endX, details.endY],
lineStyle,
edgeWidth);
edge._private.rscratch.straightEdgeTooShort = false;
}
} else {
var details = edge._private.rscratch;
this.drawStyledEdge(edge, context, [details.startX, details.startY,
details.cp2x, details.cp2y, details.endX, details.endY],
lineStyle,
edgeWidth);
}
if (edge._private.rscratch.noArrowPlacement !== true
&& edge._private.rscratch.startX !== undefined) {
this.drawArrowheads(context, edge, drawOverlayInstead);
}
}
var _genPoints = function(pt, spacing, even) {
var approxLen = Math.sqrt(Math.pow(pt[4] - pt[0], 2) + Math.pow(pt[5] - pt[1], 2));
approxLen += Math.sqrt(Math.pow((pt[4] + pt[0]) / 2 - pt[2], 2) + Math.pow((pt[5] + pt[1]) / 2 - pt[3], 2));
var pts = Math.ceil(approxLen / spacing); var inc = approxLen / spacing;
var pz;
if (pts > 0) {
pz = new Array(pts * 2);
} else {
return null;
}
for (var i = 0; i < pts; i++) {
var cur = i / pts;
pz[i * 2] = pt[0] * (1 - cur) * (1 - cur) + 2 * (pt[2]) * (1 - cur) * cur + pt[4] * (cur) * (cur);
pz[i * 2 + 1] = pt[1] * (1 - cur) * (1 - cur) + 2 * (pt[3]) * (1 - cur) * cur + pt[5] * (cur) * (cur);
}
return pz;
}
var _genStraightLinePoints = function(pt, spacing, even) {
var approxLen = Math.sqrt(Math.pow(pt[2] - pt[0], 2) + Math.pow(pt[3] - pt[1], 2));
var pts = Math.ceil(approxLen / spacing);
var pz;
if (pts > 0) {
pz = new Array(pts * 2);
} else {
return null;
}
var lineOffset = [pt[2] - pt[0], pt[3] - pt[1]];
for (var i = 0; i < pts; i++) {
var cur = i / pts;
pz[i * 2] = lineOffset[0] * cur + pt[0];
pz[i * 2 + 1] = lineOffset[1] * cur + pt[1];
}
return pz;
}
var _genEvenOddpts = function(pt, evenspac, oddspac) {
pt1 = _genpts(pt, evenspac);
pt2 = _genpts(pt, oddspac);
}
CanvasRenderer.prototype.createBuffer = function(w, h) {
var buffer = document.createElement("canvas");
buffer.width = w;
buffer.height = h;
return [buffer, buffer.getContext("2d")];
}
/*
CanvasRenderer.prototype.
CanvasRenderer.prototype.drawStraightEdge = function(context, x1, y1, x2, y2, type, width) {
if (type == "solid") {
context.beginPath();
context.moveTo(
edge._private.rscratch.startX,
edge._private.rscratch.startY);
context.stroke();
} else if (type == "dotted") {
var pt = _genStraightLinePoints([x1, y1, x2, y2], 10, false);
} else if (type == "dashed") {
var pt = _genStraightLinePoints([x1, y1, x2, y2], 10, false);
}
}
*/
CanvasRenderer.prototype.drawStyledEdge = function(
edge, context, pts, type, width) {
// 3 points given -> assume Bezier
// 2 -> assume straight
var cy = this.data.cy;
var zoom = cy.zoom();
// Adjusted edge width for dotted
// width = Math.max(width * 1.6, 3.4) * zoom;
// console.log("w", width);
// from http://en.wikipedia.org/wiki/Bézier_curve#Quadratic_curves
function qbezierAt(p0, p1, p2, t){
return (1 - t)*(1 - t)*p0 + 2*(1 - t)*t*p1 + t*t*p2;
}
if( edge._private.rstyle.bezierPts === undefined ){
edge._private.rstyle.bezierPts = [];
}
var nBpts = edge._private.rstyle.bezierPts.length;
if( edge.isLoop() ){
if( nBpts >= 12 ){
edge._private.rstyle.bezierPts = [];
} else {
// append to current array
}
} else {
edge._private.rstyle.bezierPts = [];
}
var bpts = edge._private.rstyle.bezierPts;
if( pts.length === 6 ){
bpts.push({
x: qbezierAt( pts[0], pts[2], pts[4], 0.05 ),
y: qbezierAt( pts[1], pts[3], pts[5], 0.05 )
});
bpts.push({
x: qbezierAt( pts[0], pts[2], pts[4], 0.25 ),
y: qbezierAt( pts[1], pts[3], pts[5], 0.25 )
});
bpts.push({
x: qbezierAt( pts[0], pts[2], pts[4], 0.35 ),
y: qbezierAt( pts[1], pts[3], pts[5], 0.35 )
});
bpts.push({
x: qbezierAt( pts[0], pts[2], pts[4], 0.65 ),
y: qbezierAt( pts[1], pts[3], pts[5], 0.65 )
});
bpts.push({
x: qbezierAt( pts[0], pts[2], pts[4], 0.75 ),
y: qbezierAt( pts[1], pts[3], pts[5], 0.75 )
});
bpts.push({
x: qbezierAt( pts[0], pts[2], pts[4], 0.95 ),
y: qbezierAt( pts[1], pts[3], pts[5], 0.95 )
});
}
if (type == "solid") {
context.beginPath();
context.moveTo(pts[0], pts[1]);
if (pts.length == 3 * 2) {
context.quadraticCurveTo(pts[2], pts[3], pts[4], pts[5]);
} else {
context.lineTo(pts[2], pts[3]);
}
// context.closePath();
context.stroke();
} else if (type == "dotted") {
var pt;
if (pts.length == 3 * 2) {
pt = _genPoints(pts, 16, true);
} else {
pt = _genStraightLinePoints(pts, 16, true);
}
if (!pt) { return; }
var dotRadius = Math.max(width * 1.6, 3.4) * zoom;
var bufW = dotRadius * 2, bufH = dotRadius * 2;
bufW = Math.max(bufW, 1);
bufH = Math.max(bufH, 1);
var buffer = this.createBuffer(bufW, bufH);
var context2 = buffer[1];
// console.log(buffer);
// console.log(bufW, bufH);
// Draw on buffer
context2.setTransform(1, 0, 0, 1, 0, 0);
context2.clearRect(0, 0, bufW, bufH);
context2.fillStyle = context.strokeStyle;
context2.beginPath();
context2.arc(bufW/2, bufH/2, dotRadius * 0.5, 0, Math.PI * 2, false);
context2.fill();
// Now use buffer
context.beginPath();
//context.save();
for (var i=0; i 0) {
context.stroke();
}
// draw the overlay
} else {
var overlayPadding = node._private.style["overlay-padding"].value;
var overlayOpacity = node._private.style["overlay-opacity"].value;
var overlayColor = node._private.style["overlay-color"].value;
if( overlayOpacity > 0 ){
context.fillStyle = "rgba( " + overlayColor[0] + ", " + overlayColor[1] + ", " + overlayColor[2] + ", " + overlayOpacity + " )";
nodeShapes[this.getNodeShape(node)].draw(
context,
node._private.position.x,
node._private.position.y,
nodeWidth + overlayPadding * 2,
nodeHeight + overlayPadding * 2
);
}
}
};
CanvasRenderer.prototype.drawInscribedImage = function(context, img, node) {
var r = this;
// console.log(this.data);
var zoom = this.data.cy._private.zoom;
var nodeX = node._private.position.x;
var nodeY = node._private.position.y;
//var nodeWidth = node._private.style["width"].value;
//var nodeHeight = node._private.style["height"].value;
var nodeWidth = this.getNodeWidth(node);
var nodeHeight = this.getNodeHeight(node);
context.save();
nodeShapes[r.getNodeShape(node)].drawPath(
context,
nodeX, nodeY,
nodeWidth, nodeHeight);
context.clip();
// context.setTransform(1, 0, 0, 1, 0, 0);
var imgDim = [img.width, img.height];
context.drawImage(img,
nodeX - imgDim[0] / 2,
nodeY - imgDim[1] / 2,
imgDim[0],
imgDim[1]);
context.restore();
if (node._private.style["border-width"].value > 0) {
context.stroke();
}
};
// Draw node text
CanvasRenderer.prototype.drawNodeText = function(context, node) {
if (node._private.style["visibility"].value != "visible") {
return;
}
var computedSize = node._private.style["font-size"].pxValue * node.cy().zoom();
var minSize = node._private.style["min-zoomed-font-size"].pxValue;
if( computedSize < minSize ){
return;
}
var textX, textY;
//var nodeWidth = node._private.style["width"].value;
//var nodeHeight = node._private.style["height"].value;
var nodeWidth = this.getNodeWidth(node);
var nodeHeight = this.getNodeHeight(node);
// Find text position
var textHalign = node._private.style["text-halign"].strValue;
if (textHalign == "left") {
// Align right boundary of text with left boundary of node
context.textAlign = "right";
textX = node._private.position.x - nodeWidth / 2;
} else if (textHalign == "right") {
// Align left boundary of text with right boundary of node
context.textAlign = "left";
textX = node._private.position.x + nodeWidth / 2;
} else if (textHalign == "center") {
context.textAlign = "center";
textX = node._private.position.x;
} else {
// Same as center
context.textAlign = "center";
textX = node._private.position.x;
}
var textValign = node._private.style["text-valign"].strValue;
if (textValign == "top") {
context.textBaseline = "bottom";
textY = node._private.position.y - nodeHeight / 2;
} else if (textValign == "bottom") {
context.textBaseline = "top";
textY = node._private.position.y + nodeHeight / 2;
} else if (textValign == "middle" || textValign == "center") {
context.textBaseline = "middle";
textY = node._private.position.y;
} else {
// same as center
context.textBaseline = "middle";
textY = node._private.position.y;
}
this.drawText(context, node, textX, textY);
};
// Draw text
CanvasRenderer.prototype.drawText = function(context, element, textX, textY) {
var parentOpacity = 1;
var parents = element.parents();
for( var i = 0; i < parents.length; i++ ){
var parent = parents[i];
var opacity = parent._private.style.opacity.value;
parentOpacity = opacity * parentOpacity;
if( opacity === 0 ){
return;
}
}
// Font style
var labelStyle = element._private.style["font-style"].strValue;
var labelSize = element._private.style["font-size"].value + "px";
var labelFamily = element._private.style["font-family"].strValue;
var labelVariant = element._private.style["font-variant"].strValue;
var labelWeight = element._private.style["font-weight"].strValue;
context.font = labelStyle + " " + labelWeight + " "
+ labelSize + " " + labelFamily;
var text = String(element._private.style["content"].value);
var textTransform = element._private.style["text-transform"].value;
if (textTransform == "none") {
} else if (textTransform == "uppercase") {
text = text.toUpperCase();
} else if (textTransform == "lowercase") {
text = text.toLowerCase();
}
// Calculate text draw position based on text alignment
// so text outlines aren't jagged
context.lineJoin = 'round';
context.fillStyle = "rgba("
+ element._private.style["color"].value[0] + ","
+ element._private.style["color"].value[1] + ","
+ element._private.style["color"].value[2] + ","
+ (element._private.style["text-opacity"].value
* element._private.style["opacity"].value * parentOpacity) + ")";
context.strokeStyle = "rgba("
+ element._private.style["text-outline-color"].value[0] + ","
+ element._private.style["text-outline-color"].value[1] + ","
+ element._private.style["text-outline-color"].value[2] + ","
+ (element._private.style["text-opacity"].value
* element._private.style["opacity"].value * parentOpacity) + ")";
if (text != undefined) {
var lineWidth = 2 * element._private.style["text-outline-width"].value; // *2 b/c the stroke is drawn centred on the middle
if (lineWidth > 0) {
context.lineWidth = lineWidth;
context.strokeText(text, textX, textY);
}
// Thanks sysord@github for the isNaN checks!
if (isNaN(textX)) { textX = 0; }
if (isNaN(textY)) { textY = 0; }
context.fillText("" + text, textX, textY);
// record the text's width for use in bounding box calc
element._private.rstyle.labelWidth = context.measureText( text ).width;
}
};
CanvasRenderer.prototype.drawBackground = function(context, color1, color2,
startPosition, endPosition) {
}
// @O Edge calculation functions
{
// Find edge control points
CanvasRenderer.prototype.findEdgeControlPoints = function(edges) {
var hashTable = {}; var cy = this.data.cy;
var pairIds = [];
var pairId;
for (var i = 0; i < edges.length; i++) {
pairId = edges[i]._private.data.source > edges[i]._private.data.target ?
edges[i]._private.data.target + '-' + edges[i]._private.data.source :
edges[i]._private.data.source + '-' + edges[i]._private.data.target ;
if (hashTable[pairId] == undefined) {
hashTable[pairId] = [];
}
hashTable[pairId].push( edges[i] );
pairIds.push( pairId );
}
var src, tgt;
// Nested for loop is OK; total number of iterations for both loops = edgeCount
for (var p = 0; p < pairIds.length; p++) {
pairId = pairIds[p];
src = cy.getElementById( hashTable[pairId][0]._private.data.source );
tgt = cy.getElementById( hashTable[pairId][0]._private.data.target );
var midPointX = (src._private.position.x + tgt._private.position.x) / 2;
var midPointY = (src._private.position.y + tgt._private.position.y) / 2;
var displacementX, displacementY;
if (hashTable[pairId].length > 1) {
displacementX = tgt._private.position.y - src._private.position.y;
displacementY = src._private.position.x - tgt._private.position.x;
var displacementLength = Math.sqrt(displacementX * displacementX
+ displacementY * displacementY);
displacementX /= displacementLength;
displacementY /= displacementLength;
}
var edge;
for (var i = 0; i < hashTable[pairId].length; i++) {
edge = hashTable[pairId][i];
var edgeIndex1 = edge._private.rscratch.lastEdgeIndex;
var edgeIndex2 = i;
var numEdges1 = edge._private.rscratch.lastNumEdges;
var numEdges2 = hashTable[pairId].length;
var srcX1 = edge._private.rscratch.lastSrcCtlPtX;
var srcX2 = src._private.position.x;
var srcY1 = edge._private.rscratch.lastSrcCtlPtY;
var srcY2 = src._private.position.y;
var srcW1 = edge._private.rscratch.lastSrcCtlPtW;
var srcW2 = src.outerWidth();
var srcH1 = edge._private.rscratch.lastSrcCtlPtH;
var srcH2 = src.outerHeight();
var tgtX1 = edge._private.rscratch.lastTgtCtlPtX;
var tgtX2 = tgt._private.position.x;
var tgtY1 = edge._private.rscratch.lastTgtCtlPtY;
var tgtY2 = tgt._private.position.y;
var tgtW1 = edge._private.rscratch.lastTgtCtlPtW;
var tgtW2 = tgt.outerWidth();
var tgtH1 = edge._private.rscratch.lastTgtCtlPtH;
var tgtH2 = tgt.outerHeight();
if( srcX1 === srcX2 && srcY1 === srcY2 && srcW1 === srcW2 && srcH1 === srcH2
&& tgtX1 === tgtX2 && tgtY1 === tgtY2 && tgtW1 === tgtW2 && tgtH1 === tgtH2
&& edgeIndex1 === edgeIndex2 && numEdges1 === numEdges2 ){
// console.log('edge ctrl pt cache HIT')
continue; // then the control points haven't changed and we can skip calculating them
} else {
var rs = edge._private.rscratch;
rs.lastSrcCtlPtX = srcX2;
rs.lastSrcCtlPtY = srcY2;
rs.lastSrcCtlPtW = srcW2;
rs.lastSrcCtlPtH = srcH2;
rs.lastTgtCtlPtX = tgtX2;
rs.lastTgtCtlPtY = tgtY2;
rs.lastTgtCtlPtW = tgtW2;
rs.lastTgtCtlPtH = tgtH2;
rs.lastEdgeIndex = edgeIndex2;
rs.lastNumEdges = numEdges2;
// console.log('edge ctrl pt cache MISS')
}
// Self-edge
if (src._private.data.id == tgt._private.data.id) {
var stepSize = edge._private.style["control-point-step-size"].pxValue;
edge._private.rscratch.edgeType = "self";
// New -- fix for large nodes
edge._private.rscratch.cp2ax = src._private.position.x;
edge._private.rscratch.cp2ay = src._private.position.y
- (1 + Math.pow(this.getNodeHeight(src), 1.12) / 100) * stepSize * (i / 3 + 1);
edge._private.rscratch.cp2cx = src._private.position.x
- (1 + Math.pow(this.getNodeWidth(src), 1.12) / 100) * stepSize * (i / 3 + 1);
edge._private.rscratch.cp2cy = src._private.position.y;
edge._private.rscratch.selfEdgeMidX =
(edge._private.rscratch.cp2ax + edge._private.rscratch.cp2cx) / 2.0;
edge._private.rscratch.selfEdgeMidY =
(edge._private.rscratch.cp2ay + edge._private.rscratch.cp2cy) / 2.0;
// Straight edge
} else if (hashTable[pairId].length % 2 == 1
&& i == Math.floor(hashTable[pairId].length / 2)) {
edge._private.rscratch.edgeType = "straight";
// Bezier edge
} else {
var stepSize = edge._private.style["control-point-step-size"].value;
var distanceFromMidpoint = (0.5 - hashTable[pairId].length / 2 + i) * stepSize;
edge._private.rscratch.edgeType = "bezier";
edge._private.rscratch.cp2x = midPointX
+ displacementX * distanceFromMidpoint;
edge._private.rscratch.cp2y = midPointY
+ displacementY * distanceFromMidpoint;
// console.log(edge, midPointX, displacementX, distanceFromMidpoint);
}
}
}
return hashTable;
}
CanvasRenderer.prototype.findEndpoints = function(edge) {
var intersect;
var source = edge.source()[0];
var target = edge.target()[0];
// var sourceRadius = Math.max(edge.source()[0]._private.style["width"].value,
// edge.source()[0]._private.style["height"].value);
var sourceRadius = Math.max(this.getNodeWidth(source),
this.getNodeHeight(source));
// var targetRadius = Math.max(edge.target()[0]._private.style["width"].value,
// edge.target()[0]._private.style["height"].value);
var targetRadius = Math.max(this.getNodeWidth(target),
this.getNodeHeight(target));
sourceRadius = 0;
targetRadius /= 2;
var start = [edge.source().position().x, edge.source().position().y];
var end = [edge.target().position().x, edge.target().position().y];
if (edge._private.rscratch.edgeType == "self") {
var cp = [edge._private.rscratch.cp2cx, edge._private.rscratch.cp2cy];
intersect = nodeShapes[this.getNodeShape(target)].intersectLine(
target._private.position.x,
target._private.position.y,
//target._private.style["width"].value,
//target._private.style["height"].value,
this.getNodeWidth(target),
this.getNodeHeight(target),
cp[0], //halfPointX,
cp[1], //halfPointY
target._private.style["border-width"].value / 2
);
var arrowEnd = this.shortenIntersection(intersect, cp,
arrowShapes[edge._private.style["target-arrow-shape"].value].spacing(edge));
var edgeEnd = this.shortenIntersection(intersect, cp,
arrowShapes[edge._private.style["target-arrow-shape"].value].gap(edge));
edge._private.rscratch.endX = edgeEnd[0];
edge._private.rscratch.endY = edgeEnd[1];
edge._private.rscratch.arrowEndX = arrowEnd[0];
edge._private.rscratch.arrowEndY = arrowEnd[1];
var cp = [edge._private.rscratch.cp2ax, edge._private.rscratch.cp2ay];
intersect = nodeShapes[this.getNodeShape(source)].intersectLine(
source._private.position.x,
source._private.position.y,
//source._private.style["width"].value,
//source._private.style["height"].value,
this.getNodeWidth(source),
this.getNodeHeight(source),
cp[0], //halfPointX,
cp[1], //halfPointY
source._private.style["border-width"].value / 2
);
var arrowStart = this.shortenIntersection(intersect, cp,
arrowShapes[edge._private.style["source-arrow-shape"].value].spacing(edge));
var edgeStart = this.shortenIntersection(intersect, cp,
arrowShapes[edge._private.style["source-arrow-shape"].value].gap(edge));
edge._private.rscratch.startX = edgeStart[0];
edge._private.rscratch.startY = edgeStart[1];
edge._private.rscratch.arrowStartX = arrowStart[0];
edge._private.rscratch.arrowStartY = arrowStart[1];
} else if (edge._private.rscratch.edgeType == "straight") {
intersect = nodeShapes[this.getNodeShape(target)].intersectLine(
target._private.position.x,
target._private.position.y,
//target._private.style["width"].value,
//target._private.style["height"].value,
this.getNodeWidth(target),
this.getNodeHeight(target),
source.position().x,
source.position().y,
target._private.style["border-width"].value / 2);
if (intersect.length == 0) {
edge._private.rscratch.noArrowPlacement = true;
// return;
} else {
edge._private.rscratch.noArrowPlacement = false;
}
var arrowEnd = this.shortenIntersection(intersect,
[source.position().x, source.position().y],
arrowShapes[edge._private.style["target-arrow-shape"].value].spacing(edge));
var edgeEnd = this.shortenIntersection(intersect,
[source.position().x, source.position().y],
arrowShapes[edge._private.style["target-arrow-shape"].value].gap(edge));
edge._private.rscratch.endX = edgeEnd[0];
edge._private.rscratch.endY = edgeEnd[1];
edge._private.rscratch.arrowEndX = arrowEnd[0];
edge._private.rscratch.arrowEndY = arrowEnd[1];
intersect = nodeShapes[this.getNodeShape(source)].intersectLine(
source._private.position.x,
source._private.position.y,
//source._private.style["width"].value,
//source._private.style["height"].value,
this.getNodeWidth(source),
this.getNodeHeight(source),
target.position().x,
target.position().y,
source._private.style["border-width"].value / 2);
if (intersect.length == 0) {
edge._private.rscratch.noArrowPlacement = true;
// return;
} else {
edge._private.rscratch.noArrowPlacement = false;
}
/*
console.log("1: "
+ arrowShapes[edge._private.style["source-arrow-shape"].value],
edge._private.style["source-arrow-shape"].value);
*/
var arrowStart = this.shortenIntersection(intersect,
[target.position().x, target.position().y],
arrowShapes[edge._private.style["source-arrow-shape"].value].spacing(edge));
var edgeStart = this.shortenIntersection(intersect,
[target.position().x, target.position().y],
arrowShapes[edge._private.style["source-arrow-shape"].value].gap(edge));
edge._private.rscratch.startX = edgeStart[0];
edge._private.rscratch.startY = edgeStart[1];
edge._private.rscratch.arrowStartX = arrowStart[0];
edge._private.rscratch.arrowStartY = arrowStart[1];
} else if (edge._private.rscratch.edgeType == "bezier") {
var cp = [edge._private.rscratch.cp2x, edge._private.rscratch.cp2y];
// Point at middle of Bezier
var halfPointX = start[0] * 0.25 + end[0] * 0.25 + cp[0] * 0.5;
var halfPointY = start[1] * 0.25 + end[1] * 0.25 + cp[1] * 0.5;
intersect = nodeShapes[
this.getNodeShape(target)].intersectLine(
target._private.position.x,
target._private.position.y,
//target._private.style["width"].value,
//target._private.style["height"].value,
this.getNodeWidth(target),
this.getNodeHeight(target),
cp[0], //halfPointX,
cp[1], //halfPointY
target._private.style["border-width"].value / 2
);
/*
console.log("2: "
+ arrowShapes[edge._private.style["source-arrow-shape"].value],
edge._private.style["source-arrow-shape"].value);
*/
var arrowEnd = this.shortenIntersection(intersect, cp,
arrowShapes[edge._private.style["target-arrow-shape"].value].spacing(edge));
var edgeEnd = this.shortenIntersection(intersect, cp,
arrowShapes[edge._private.style["target-arrow-shape"].value].gap(edge));
edge._private.rscratch.endX = edgeEnd[0];
edge._private.rscratch.endY = edgeEnd[1];
edge._private.rscratch.arrowEndX = arrowEnd[0];
edge._private.rscratch.arrowEndY = arrowEnd[1];
intersect = nodeShapes[
this.getNodeShape(source)].intersectLine(
source._private.position.x,
source._private.position.y,
//source._private.style["width"].value,
//source._private.style["height"].value,
this.getNodeWidth(source),
this.getNodeHeight(source),
cp[0], //halfPointX,
cp[1], //halfPointY
source._private.style["border-width"].value / 2
);
var arrowStart = this.shortenIntersection(intersect, cp,
arrowShapes[edge._private.style["source-arrow-shape"].value].spacing(edge));
var edgeStart = this.shortenIntersection(intersect, cp,
arrowShapes[edge._private.style["source-arrow-shape"].value].gap(edge));
edge._private.rscratch.startX = edgeStart[0];
edge._private.rscratch.startY = edgeStart[1];
edge._private.rscratch.arrowStartX = arrowStart[0];
edge._private.rscratch.arrowStartY = arrowStart[1];
} else if (edge._private.rscratch.isArcEdge) {
return;
}
}
}
// @O Graph traversal functions
{
// Find adjacent edges
CanvasRenderer.prototype.findEdges = function(nodeSet) {
var edges = this.getCachedEdges();
var hashTable = {};
var adjacentEdges = [];
for (var i = 0; i < nodeSet.length; i++) {
hashTable[nodeSet[i]._private.data.id] = nodeSet[i];
}
for (var i = 0; i < edges.length; i++) {
if (hashTable[edges[i]._private.data.source]
|| hashTable[edges[i]._private.data.target]) {
adjacentEdges.push(edges[i]);
}
}
return adjacentEdges;
}
}
// @O Intersection functions
{
CanvasRenderer.prototype.intersectLineEllipse = function(
x, y, centerX, centerY, ellipseWradius, ellipseHradius) {
var dispX = centerX - x;
var dispY = centerY - y;
dispX /= ellipseWradius;
dispY /= ellipseHradius;
var len = Math.sqrt(dispX * dispX + dispY * dispY);
var newLength = len - 1;
if (newLength < 0) {
return [];
}
var lenProportion = newLength / len;
return [(centerX - x) * lenProportion + x, (centerY - y) * lenProportion + y];
}
CanvasRenderer.prototype.dotProduct = function(
vec1, vec2) {
if (vec1.length != 2 || vec2.length != 2) {
throw 'dot product: arguments are not vectors';
}
return (vec1[0] * vec2[0] + vec1[1] * vec2[1]);
}
// Returns intersections of increasing distance from line's start point
CanvasRenderer.prototype.intersectLineCircle = function(
x1, y1, x2, y2, centerX, centerY, radius) {
// Calculate d, direction vector of line
var d = [x2 - x1, y2 - y1]; // Direction vector of line
var s = [x1, y1]; // Start of line
var c = [centerX, centerY]; // Center of circle
var f = [x1 - centerX, y1 - centerY]
var a = d[0] * d[0] + d[1] * d[1];
var b = 2 * (f[0] * d[0] + f[1] * d[1]);
var c = (f[0] * f[0] + f[1] * f[1]) - radius * radius ;
/*
var a = this.dotProduct(d, d);
var b = 2 * this.dotProduct(s, d) - this.dotProduct(d, c);
var c = this.dotProduct(s, s) - 2 * this.dotProduct(s, c) + this.dotProduct(c, c) - radius * radius ;
*/
var discriminant = b*b-4*a*c;
if (discriminant < 0) {
return [];
}
t1 = (-b + Math.sqrt(discriminant)) / (2 * a);
t2 = (-b - Math.sqrt(discriminant)) / (2 * a);
var tMin = Math.min(t1, t2);
var tMax = Math.max(t1, t2);
var inRangeParams = [];
if (tMin >= 0 && tMin <= 1) {
inRangeParams.push(tMin);
}
if (tMax >= 0 && tMax <= 1) {
inRangeParams.push(tMax);
}
if (inRangeParams.length == 0) {
return [];
}
var nearIntersectionX = inRangeParams[0] * d[0] + x1;
var nearIntersectionY = inRangeParams[0] * d[1] + y1;
if (inRangeParams.length > 1) {
if (inRangeParams[0] == inRangeParams[1]) {
return [nearIntersectionX, nearIntersectionY];
} else {
var farIntersectionX = inRangeParams[1] * d[0] + x1;
var farIntersectionY = inRangeParams[1] * d[1] + y1;
return [nearIntersectionX, nearIntersectionY, farIntersectionX, farIntersectionY];
}
} else {
return [nearIntersectionX, nearIntersectionY]
}
}
CanvasRenderer.prototype.findCircleNearPoint = function(centerX, centerY,
radius, farX, farY) {
var displacementX = farX - centerX;
var displacementY = farY - centerY;
var distance = Math.sqrt(displacementX * displacementX
+ displacementY * displacementY);
var unitDisplacementX = displacementX / distance;
var unitDisplacementY = displacementY / distance;
return [centerX + unitDisplacementX * radius,
centerY + unitDisplacementY * radius];
}
CanvasRenderer.prototype.findMaxSqDistanceToOrigin = function(points) {
var maxSqDistance = 0.000001;
var sqDistance;
for (var i = 0; i < points.length / 2; i++) {
sqDistance = points[i * 2] * points[i * 2]
+ points[i * 2 + 1] * points[i * 2 + 1];
if (sqDistance > maxSqDistance) {
maxSqDistance = sqDistance;
}
}
return maxSqDistance;
}
CanvasRenderer.prototype.finiteLinesIntersect = function(
x1, y1, x2, y2, x3, y3, x4, y4, infiniteLines) {
var ua_t = (x4 - x3) * (y1 - y3) - (y4 - y3) * (x1 - x3);
var ub_t = (x2 - x1) * (y1 - y3) - (y2 - y1) * (x1 - x3);
var u_b = (y4 - y3) * (x2 - x1) - (x4 - x3) * (y2 - y1);
if (u_b != 0) {
var ua = ua_t / u_b;
var ub = ub_t / u_b;
if (0 <= ua && ua <= 1 && 0 <= ub && ub <= 1) {
return [x1 + ua * (x2 - x1), y1 + ua * (y2 - y1)];
} else {
if (!infiniteLines) {
return [];
} else {
return [x1 + ua * (x2 - x1), y1 + ua * (y2 - y1)];
}
}
} else {
if (ua_t == 0 || ub_t == 0) {
// Parallel, coincident lines. Check if overlap
// Check endpoint of second line
if ([x1, x2, x4].sort()[1] == x4) {
return [x4, y4];
}
// Check start point of second line
if ([x1, x2, x3].sort()[1] == x3) {
return [x3, y3];
}
// Endpoint of first line
if ([x3, x4, x2].sort()[1] == x2) {
return [x2, y2];
}
return [];
} else {
// Parallel, non-coincident
return [];
}
}
}
// (boxMinX, boxMinY, boxMaxX, boxMaxY, padding,
// cornerRadius * 2, cornerRadius * 2, vBoxTopLeftX + padding, hBoxTopLeftY + padding)) {
CanvasRenderer.prototype.boxIntersectEllipse = function(
x1, y1, x2, y2, padding, width, height, centerX, centerY) {
if (x2 < x1) {
var oldX1 = x1;
x1 = x2;
x2 = oldX1;
}
if (y2 < y1) {
var oldY1 = y1;
y1 = y2;
y2 = oldY1;
}
// 4 ortho extreme points
var west = [centerX - width / 2 - padding, centerY];
var east = [centerX + width / 2 + padding, centerY];
var north = [centerX, centerY - height / 2 - padding];
var south = [centerX, centerY + height / 2 + padding];
// out of bounds: return false
if (x2 < west[0]) {
return false;
}
if (x1 > east[0]) {
return false;
}
if (y1 > south[1]) {
return false;
}
if (y2 < north[1]) {
return false;
}
// 1 of 4 ortho extreme points in box: return true
if (x1 <= east[0] && east[0] <= x2
&& y1 <= east[1] && east[1] <= y2) {
return true;
}
if (x1 <= west[0] && west[0] <= x2
&& y1 <= west[1] && west[1] <= y2) {
return true;
}
if (x1 <= north[0] && north[0] <= x2
&& y1 <= north[1] && north[1] <= y2) {
return true;
}
if (x1 <= south[0] && south[0] <= x2
&& y1 <= south[1] && south[1] <= y2) {
return true;
}
// box corner in ellipse: return true
x1 = (x1 - centerX) / (width / 2 + padding);
x2 = (x2 - centerX) / (width / 2 + padding);
y1 = (y1 - centerY) / (height / 2 + padding);
y2 = (y2 - centerY) / (height / 2 + padding);
if (x1 * x1 + y1 * y1 <= 1) {
return true;
}
if (x2 * x2 + y1 * y1 <= 1) {
return true;
}
if (x2 * x2 + y2 * y2 <= 1) {
return true;
}
if (x1 * x1 + y2 * y2 <= 1) {
return true;
}
return false;
}
CanvasRenderer.prototype.boxIntersectPolygon = function(
x1, y1, x2, y2, basePoints, width, height, centerX, centerY, direction, padding) {
// console.log(arguments);
if (x2 < x1) {
var oldX1 = x1;
x1 = x2;
x2 = oldX1;
}
if (y2 < y1) {
var oldY1 = y1;
y1 = y2;
y2 = oldY1;
}
var transformedPoints = new Array(basePoints.length)
// Gives negative of angle
var angle = Math.asin(direction[1] / (Math.sqrt(direction[0] * direction[0]
+ direction[1] * direction[1])));
if (direction[0] < 0) {
angle = angle + Math.PI / 2;
} else {
angle = -angle - Math.PI / 2;
}
var cos = Math.cos(-angle);
var sin = Math.sin(-angle);
for (var i = 0; i < transformedPoints.length / 2; i++) {
transformedPoints[i * 2] =
width / 2 * (basePoints[i * 2] * cos
- basePoints[i * 2 + 1] * sin);
transformedPoints[i * 2 + 1] =
height / 2 * (basePoints[i * 2 + 1] * cos
+ basePoints[i * 2] * sin);
transformedPoints[i * 2] += centerX;
transformedPoints[i * 2 + 1] += centerY;
}
// Assume transformedPoints.length > 0, and check if intersection is possible
var minTransformedX = transformedPoints[0];
var maxTransformedX = transformedPoints[0];
var minTransformedY = transformedPoints[1];
var maxTransformedY = transformedPoints[1];
for (var i = 1; i < transformedPoints.length / 2; i++) {
if (transformedPoints[i * 2] > maxTransformedX) {
maxTransformedX = transformedPoints[i * 2];
}
if (transformedPoints[i * 2] < minTransformedX) {
minTransformedX = transformedPoints[i * 2];
}
if (transformedPoints[i * 2 + 1] > maxTransformedY) {
maxTransformedY = transformedPoints[i * 2 + 1];
}
if (transformedPoints[i * 2 + 1] < minTransformedY) {
minTransformedY = transformedPoints[i * 2 + 1];
}
}
if (x2 < minTransformedX - padding) {
return false;
}
if (x1 > maxTransformedX + padding) {
return false;
}
if (y2 < minTransformedY - padding) {
return false;
}
if (y1 > maxTransformedY + padding) {
return false;
}
// Continue checking with padding-corrected points
var points;
if (padding > 0) {
var expandedLineSet = renderer.expandPolygon(
transformedPoints,
-padding);
points = renderer.joinLines(expandedLineSet);
} else {
points = transformedPoints;
}
// Check if a point is in box
for (var i = 0; i < transformedPoints.length / 2; i++) {
if (x1 <= transformedPoints[i * 2]
&& transformedPoints[i * 2] <= x2) {
if (y1 <= transformedPoints[i * 2 + 1]
&& transformedPoints[i * 2 + 1] <= y2) {
return true;
}
}
}
// Check for intersections with the selection box
for (var i = 0; i < points.length / 2; i++) {
var currentX = points[i * 2];
var currentY = points[i * 2 + 1];
var nextX;
var nextY;
if (i < points.length / 2 - 1) {
nextX = points[(i + 1) * 2];
nextY = points[(i + 1) * 2 + 1]
} else {
nextX = points[0];
nextY = points[1];
}
// Intersection with top of selection box
if (renderer.finiteLinesIntersect(currentX, currentY, nextX, nextY, x1, y1, x2, y1, false).length > 0) {
return true;
}
// Intersection with bottom of selection box
if (renderer.finiteLinesIntersect(currentX, currentY, nextX, nextY, x1, y2, x2, y2, false).length > 0) {
return true;
}
// Intersection with left side of selection box
if (renderer.finiteLinesIntersect(currentX, currentY, nextX, nextY, x1, y1, x1, y2, false).length > 0) {
return true;
}
// Intersection with right side of selection box
if (renderer.finiteLinesIntersect(currentX, currentY, nextX, nextY, x2, y1, x2, y2, false).length > 0) {
return true;
}
}
/*
// Check if box corner in the polygon
if (renderer.pointInsidePolygon(
x1, y1, points, 0, 0, 1, 1, 0, direction)) {
return true;
} else if (renderer.pointInsidePolygon(
x1, y2, points, 0, 0, 1, 1, 0, direction)) {
return true;
} else if (renderer.pointInsidePolygon(
x2, y2, points, 0, 0, 1, 1, 0, direction)) {
return true;
} else if (renderer.pointInsidePolygon(
x2, y1, points, 0, 0, 1, 1, 0, direction)) {
return true;
}
*/
return false;
}
CanvasRenderer.prototype.polygonIntersectLine = function(
x, y, basePoints, centerX, centerY, width, height, padding) {
var intersections = [];
var intersection;
var transformedPoints = new Array(basePoints.length);
for (var i = 0; i < transformedPoints.length / 2; i++) {
transformedPoints[i * 2] = basePoints[i * 2] * width + centerX;
transformedPoints[i * 2 + 1] = basePoints[i * 2 + 1] * height + centerY;
}
var points;
if (padding > 0) {
var expandedLineSet = renderer.expandPolygon(
transformedPoints,
-padding);
points = renderer.joinLines(expandedLineSet);
} else {
points = transformedPoints;
}
// var points = transformedPoints;
var currentX, currentY, nextX, nextY;
for (var i = 0; i < points.length / 2; i++) {
currentX = points[i * 2];
currentY = points[i * 2 + 1];
if (i < points.length / 2 - 1) {
nextX = points[(i + 1) * 2];
nextY = points[(i + 1) * 2 + 1];
} else {
nextX = points[0];
nextY = points[1];
}
intersection = this.finiteLinesIntersect(
x, y, centerX, centerY,
currentX, currentY,
nextX, nextY);
if (intersection.length != 0) {
intersections.push(intersection[0], intersection[1]);
}
}
return intersections;
}
CanvasRenderer.prototype.shortenIntersection = function(
intersection, offset, amount) {
var disp = [intersection[0] - offset[0], intersection[1] - offset[1]];
var length = Math.sqrt(disp[0] * disp[0] + disp[1] * disp[1]);
var lenRatio = (length - amount) / length;
if (lenRatio < 0) {
return [];
} else {
return [offset[0] + lenRatio * disp[0], offset[1] + lenRatio * disp[1]];
}
}
}
// @O Arrow shapes
{
// Contract for arrow shapes:
{
// 0, 0 is arrow tip
// (0, 1) is direction towards node
// (1, 0) is right
//
// functional api:
// collide: check x, y in shape
// roughCollide: called before collide, no false negatives
// draw: draw
// spacing: dist(arrowTip, nodeBoundary)
// gap: dist(edgeTip, nodeBoundary), edgeTip may != arrowTip
}
// Declarations
{
arrowShapes["arrow"] = {
_points: [
-0.15, -0.3,
0, 0,
0.15, -0.3
],
collide: function(x, y, centerX, centerY, width, height, direction, padding) {
var points = arrowShapes["arrow"]._points;
// console.log("collide(): " + direction);
return rendFunc.pointInsidePolygon(
x, y, points, centerX, centerY, width, height, direction, padding);
},
roughCollide: function(x, y, centerX, centerY, width, height, direction, padding) {
if (typeof(arrowShapes["arrow"]._farthestPointSqDistance) == "undefined") {
arrowShapes["arrow"]._farthestPointSqDistance =
rendFunc.findMaxSqDistanceToOrigin(arrowShapes["arrow"]._points);
}
return rendFunc.checkInBoundingCircle(
x, y, arrowShapes["arrow"]._farthestPointSqDistance,
0, width, height, centerX, centerY);
},
draw: function(context) {
var points = arrowShapes["arrow"]._points;
for (var i = 0; i < points.length / 2; i++) {
context.lineTo(points[i * 2], points[i * 2 + 1]);
}
},
spacing: function(edge) {
return 0;
},
gap: function(edge) {
return edge._private.style["width"].value * 2;
}
}
arrowShapes["triangle"] = arrowShapes["arrow"];
arrowShapes["none"] = {
collide: function(x, y, centerX, centerY, width, height, direction, padding) {
return false;
},
roughCollide: function(x, y, centerX, centerY, width, height, direction, padding) {
return false;
},
draw: function(context) {
},
spacing: function(edge) {
return 0;
},
gap: function(edge) {
return 0;
}
}
arrowShapes["circle"] = {
_baseRadius: 0.15,
collide: function(x, y, centerX, centerY, width, height, direction, padding) {
// Transform x, y to get non-rotated ellipse
if (width != height) {
// This gives negative of the angle
var angle = Math.asin(direction[1] /
(Math.sqrt(direction[0] * direction[0]
+ direction[1] * direction[1])));
var cos = Math.cos(-angle);
var sin = Math.sin(-angle);
var rotatedPoint =
[x * cos - y * sin,
y * cos + x * sin];
var aspectRatio = (height + padding) / (width + padding);
y /= aspectRatio;
centerY /= aspectRatio;
return (Math.pow(centerX - x, 2)
+ Math.pow(centerY - y, 2) <= Math.pow((width + padding)
* arrowShapes["circle"]._baseRadius, 2));
} else {
return (Math.pow(centerX - x, 2)
+ Math.pow(centerY - y, 2) <= Math.pow((width + padding)
* arrowShapes["circle"]._baseRadius, 2));
}
},
roughCollide: function(x, y, centerX, centerY, width, height, direction, padding) {
return true;
},
draw: function(context) {
context.arc(0, 0, arrowShapes["circle"]._baseRadius, 0, Math.PI * 2, false);
},
spacing: function(edge) {
return rendFunc.getArrowWidth(edge._private.style["width"].value)
* arrowShapes["circle"]._baseRadius;
},
gap: function(edge) {
return edge._private.style["width"].value * 2;
}
}
arrowShapes["inhibitor"] = {
_points: [
-0.25, 0,
-0.25, -0.1,
0.25, -0.1,
0.25, 0
],
collide: function(x, y, centerX, centerY, width, height, direction, padding) {
var points = arrowShapes["inhibitor"]._points;
return rendFunc.pointInsidePolygon(
x, y, points, centerX, centerY, width, height, direction, padding);
},
roughCollide: function(x, y, centerX, centerY, width, height, direction, padding) {
if (typeof(arrowShapes["inhibitor"]._farthestPointSqDistance) == "undefined") {
arrowShapes["inhibitor"]._farthestPointSqDistance =
rendFunc.findMaxSqDistanceToOrigin(arrowShapes["inhibitor"]._points);
}
return rendFunc.checkInBoundingCircle(
x, y, arrowShapes["inhibitor"]._farthestPointSqDistance,
0, width, height, centerX, centerY);
},
draw: function(context) {
var points = arrowShapes["inhibitor"]._points;
for (var i = 0; i < points.length / 2; i++) {
context.lineTo(points[i * 2], points[i * 2 + 1]);
}
},
spacing: function(edge) {
return 4;
},
gap: function(edge) {
return 4;
}
}
arrowShapes["square"] = {
_points: [
-0.12, 0.00,
0.12, 0.00,
0.12, -0.24,
-0.12, -0.24
],
collide: function(x, y, centerX, centerY, width, height, direction, padding) {
var points = arrowShapes["square"]._points;
return rendFunc.pointInsidePolygon(
x, y, points, centerX, centerY, width, height, direction, padding);
},
roughCollide: function(x, y, centerX, centerY, width, height, direction, padding) {
if (typeof(arrowShapes["square"]._farthestPointSqDistance) == "undefined") {
arrowShapes["square"]._farthestPointSqDistance =
rendFunc.findMaxSqDistanceToOrigin(arrowShapes["square"]._points);
}
return rendFunc.checkInBoundingCircle(
x, y, arrowShapes["square"]._farthestPointSqDistance,
0, width, height, centerX, centerY);
},
draw: function(context) {
var points = arrowShapes["square"]._points;
for (var i = 0; i < points.length / 2; i++) {
context.lineTo(points[i * 2], points[i * 2 + 1]);
}
},
spacing: function(edge) {
return 0;
},
gap: function(edge) {
return edge._private.style["width"].value * 2;
}
}
arrowShapes["diamond"] = {
_points: [
-0.14, -0.14,
0, -0.28,
0.14, -0.14,
0, 0
],
collide: function(x, y, centerX, centerY, width, height, direction, padding) {
var points = arrowShapes["diamond"]._points;
return rendFunc.pointInsidePolygon(
x, y, points, centerX, centerY, width, height, direction, padding);
},
roughCollide: function(x, y, centerX, centerY, width, height, direction, padding) {
if (typeof(arrowShapes["diamond"]._farthestPointSqDistance) == "undefined") {
arrowShapes["diamond"]._farthestPointSqDistance =
rendFunc.findMaxSqDistanceToOrigin(arrowShapes["diamond"]._points);
}
return rendFunc.checkInBoundingCircle(
x, y, arrowShapes["diamond"]._farthestPointSqDistance,
0, width, height, centerX, centerY);
},
draw: function(context) {
// context.translate(0, 0.16);
context.lineTo(-0.14, -0.14);
context.lineTo(0, -0.28);
context.lineTo(0.14, -0.14);
context.lineTo(0, 0.0);
},
spacing: function(edge) {
return 0;
},
gap: function(edge) {
return edge._private.style["width"].value * 2;
}
}
arrowShapes["tee"] = arrowShapes["inhibitor"];
}
// @O Arrow shape sizing (w + l)
{
CanvasRenderer.prototype.getArrowWidth = function(edgeWidth) {
return Math.max(Math.pow(edgeWidth * 13.37, 0.9), 29);
}
CanvasRenderer.prototype.getArrowHeight = function(edgeWidth) {
return Math.max(Math.pow(edgeWidth * 13.37, 0.9), 29);
}
}
// @O Arrow shape drawing
// Draw arrowheads on edge
CanvasRenderer.prototype.drawArrowheads = function(context, edge, drawOverlayInstead) {
if( drawOverlayInstead ){ return; } // don't do anything for overlays
// Displacement gives direction for arrowhead orientation
var dispX, dispY;
var startX = edge._private.rscratch.arrowStartX;
var startY = edge._private.rscratch.arrowStartY;
dispX = startX - edge.source().position().x;
dispY = startY - edge.source().position().y;
//this.context.strokeStyle = "rgba("
context.fillStyle = "rgba("
+ edge._private.style["source-arrow-color"].value[0] + ","
+ edge._private.style["source-arrow-color"].value[1] + ","
+ edge._private.style["source-arrow-color"].value[2] + ","
+ edge._private.style.opacity.value + ")";
context.lineWidth = edge._private.style["width"].value;
this.drawArrowShape(context, edge._private.style["source-arrow-shape"].value,
startX, startY, dispX, dispY);
var endX = edge._private.rscratch.arrowEndX;
var endY = edge._private.rscratch.arrowEndY;
dispX = endX - edge.target().position().x;
dispY = endY - edge.target().position().y;
//this.context.strokeStyle = "rgba("
context.fillStyle = "rgba("
+ edge._private.style["target-arrow-color"].value[0] + ","
+ edge._private.style["target-arrow-color"].value[1] + ","
+ edge._private.style["target-arrow-color"].value[2] + ","
+ edge._private.style.opacity.value + ")";
context.lineWidth = edge._private.style["width"].value;
this.drawArrowShape(context, edge._private.style["target-arrow-shape"].value,
endX, endY, dispX, dispY);
}
// Draw arrowshape
CanvasRenderer.prototype.drawArrowShape = function(context, shape, x, y, dispX, dispY) {
// Negative of the angle
var angle = Math.asin(dispY / (Math.sqrt(dispX * dispX + dispY * dispY)));
if (dispX < 0) {
//context.strokeStyle = "AA99AA";
angle = angle + Math.PI / 2;
} else {
//context.strokeStyle = "AAAA99";
angle = - (Math.PI / 2 + angle);
}
//context.save();
context.translate(x, y);
context.moveTo(0, 0);
context.rotate(-angle);
var size = this.getArrowWidth(context.lineWidth);
/// size = 100;
context.scale(size, size);
context.beginPath();
arrowShapes[shape].draw(context);
context.closePath();
// context.stroke();
context.fill();
context.scale(1/size, 1/size);
context.rotate(angle);
context.translate(-x, -y);
//context.restore();
}
}
// @O Node shapes
{
// Generate polygon points
var generateUnitNgonPoints = function(sides, rotationRadians) {
var increment = 1.0 / sides * 2 * Math.PI;
var startAngle = sides % 2 == 0 ?
Math.PI / 2.0 + increment / 2.0 : Math.PI / 2.0;
// console.log(nodeShapes["square"]);
startAngle += rotationRadians;
var points = new Array(sides * 2);
var currentAngle;
for (var i = 0; i < sides; i++) {
currentAngle = i * increment + startAngle;
points[2 * i] = Math.cos(currentAngle);// * (1 + i/2);
points[2 * i + 1] = Math.sin(-currentAngle);// * (1 + i/2);
}
// The above generates points for a polygon inscribed in a radius 1 circle.
// Stretch so that the maximum of the height and width becomes 2 so the resulting
// scaled shape appears to be inscribed inside a rectangle with the given
// width and height. The maximum of the width and height is used to preserve
// the shape's aspect ratio.
// Stretch width
var maxAbsX = 0
var maxAbsY = 0;
for (var i = 0; i < points.length / 2; i++) {
if (Math.abs(points[2 * i] > maxAbsX)) {
maxAbsX = Math.abs(points[2 * i]);
}
if (Math.abs(points[2 * i + 1] > maxAbsY)) {
maxAbsY = Math.abs(points[2 * i + 1]);
}
}
var minScaleLimit = 0.0005;
// Use the larger dimension to do the scale, in order to preserve the shape's
// aspect ratio
var maxDimension = Math.max(maxAbsX, maxAbsY);
for (var i = 0; i < points.length / 2; i++) {
if (maxDimension > minScaleLimit) {
points[2 * i] *= (1 / maxDimension);
points[2 * i + 1] *= (1 / maxDimension);
}
}
return points;
}
// Node shape declarations
// Contract for node shapes:
{
// Node shape contract:
//
// draw: draw
// intersectLine: report intersection from x, y, to node center
// checkPointRough: heuristic check x, y in node, no false negatives
// checkPoint: check x, y in node
}
// Declarations
{
var renderer = rendFunc;
nodeShapes["ellipse"] = {
draw: function(context, centerX, centerY, width, height) {
nodeShapes["ellipse"].drawPath(context, centerX, centerY, width, height);
context.fill();
// console.log("drawing ellipse");
// console.log(arguments);
},
drawPath: function(context, centerX, centerY, width, height) {
//context.save();
context.beginPath();
context.translate(centerX, centerY);
context.scale(width / 2, height / 2);
// At origin, radius 1, 0 to 2pi
context.arc(0, 0, 1, 0, Math.PI * 2 * 0.999, false); // *0.999 b/c chrome rendering bug on full circle
context.closePath();
context.scale(2/width, 2/height);
context.translate(-centerX, -centerY);
//context.restore();
// console.log("drawing ellipse");
// console.log(arguments);
},
intersectLine: function(nodeX, nodeY, width, height, x, y, padding) {
var intersect = rendFunc.intersectLineEllipse(
x, y,
nodeX,
nodeY,
width / 2 + padding,
height / 2 + padding);
return intersect;
},
intersectBox: function(
x1, y1, x2, y2, width, height, centerX, centerY, padding) {
return CanvasRenderer.prototype.boxIntersectEllipse(
x1, y1, x2, y2, padding, width, height, centerX, centerY);
},
checkPointRough: function(
x, y, padding, width, height, centerX, centerY) {
return true;
},
checkPoint: function(
x, y, padding, width, height, centerX, centerY) {
// console.log(arguments);
x -= centerX;
y -= centerY;
x /= (width / 2 + padding);
y /= (height / 2 + padding);
return (Math.pow(x, 2) + Math.pow(y, 2) <= 1);
}
}
nodeShapes["triangle"] = {
points: generateUnitNgonPoints(3, 0),
draw: function(context, centerX, centerY, width, height) {
renderer.drawPolygon(context,
centerX, centerY,
width, height,
nodeShapes["triangle"].points);
},
drawPath: function(context, centerX, centerY, width, height) {
renderer.drawPolygonPath(context,
centerX, centerY,
width, height,
nodeShapes["triangle"].points);
},
intersectLine: function(nodeX, nodeY, width, height, x, y, padding) {
return renderer.polygonIntersectLine(
x, y,
nodeShapes["triangle"].points,
nodeX,
nodeY,
width / 2, height / 2,
padding);
/*
polygonIntersectLine(x, y, basePoints, centerX, centerY,
width, height, padding);
*/
/*
return renderer.polygonIntersectLine(
node, width, height,
x, y, nodeShapes["triangle"].points);
*/
},
intersectBox: function(
x1, y1, x2, y2, width, height, centerX, centerY, padding) {
var points = nodeShapes["triangle"].points;
return renderer.boxIntersectPolygon(
x1, y1, x2, y2,
points, width, height, centerX, centerY, [0, -1], padding);
},
checkPointRough: function(
x, y, padding, width, height, centerX, centerY) {
return renderer.checkInBoundingBox(
x, y, nodeShapes["triangle"].points, // Triangle?
padding, width, height, centerX, centerY);
},
checkPoint: function(
x, y, padding, width, height, centerX, centerY) {
return renderer.pointInsidePolygon(
x, y, nodeShapes["triangle"].points,
centerX, centerY, width, height,
[0, -1], padding);
}
}
nodeShapes["square"] = {
points: generateUnitNgonPoints(4, 0),
draw: function(context, centerX, centerY, width, height) {
renderer.drawPolygon(context,
centerX, centerY,
width, height,
nodeShapes["square"].points);
},
drawPath: function(context, centerX, centerY, width, height) {
renderer.drawPolygonPath(context,
centerX, centerY,
width, height,
nodeShapes["square"].points);
},
intersectLine: function(nodeX, nodeY, width, height, x, y, padding) {
return renderer.polygonIntersectLine(
x, y,
nodeShapes["square"].points,
nodeX,
nodeY,
width / 2, height / 2,
padding);
},
intersectBox: function(
x1, y1, x2, y2,
width, height, centerX,
centerY, padding) {
var points = nodeShapes["square"].points;
return renderer.boxIntersectPolygon(
x1, y1, x2, y2,
points, width, height, centerX,
centerY, [0, -1], padding);
},
checkPointRough: function(
x, y, padding, width, height,
centerX, centerY) {
return renderer.checkInBoundingBox(
x, y, nodeShapes["square"].points,
padding, width, height, centerX, centerY);
},
checkPoint: function(
x, y, padding, width, height, centerX, centerY) {
return renderer.pointInsidePolygon(x, y, nodeShapes["square"].points,
centerX, centerY, width, height, [0, -1], padding);
}
}
nodeShapes["rectangle"] = nodeShapes["square"];
nodeShapes["octogon"] = {};
nodeShapes["roundrectangle"] = {
points: generateUnitNgonPoints(4, 0),
draw: function(context, centerX, centerY, width, height) {
renderer.drawRoundRectangle(context,
centerX, centerY,
width, height,
10);
},
drawPath: function(context, centerX, centerY, width, height) {
renderer.drawRoundRectanglePath(context,
centerX, centerY,
width, height,
10);
},
intersectLine: function(nodeX, nodeY, width, height, x, y, padding) {
return renderer.roundRectangleIntersectLine(
x, y,
nodeX,
nodeY,
width, height,
padding);
},
intersectBox: function(
x1, y1, x2, y2,
width, height, centerX,
centerY, padding) {
return renderer.roundRectangleIntersectBox(
x1, y1, x2, y2,
width, height, centerX, centerY, padding);
},
checkPointRough: function(
x, y, padding, width, height,
centerX, centerY) {
// This check is OK because it assumes the round rectangle
// has sharp edges for the rough check
return renderer.checkInBoundingBox(
x, y, nodeShapes["roundrectangle"].points,
padding, width, height, centerX, centerY);
},
// Looks like the width passed into this function is actually the total width / 2
checkPoint: function(
x, y, padding, width, height, centerX, centerY) {
var cornerRadius = renderer.getRoundRectangleRadius(width, height);
// Check hBox
if (renderer.pointInsidePolygon(x, y, nodeShapes["roundrectangle"].points,
centerX, centerY, width, height - 2 * cornerRadius, [0, -1], padding)) {
return true;
}
// Check vBox
if (renderer.pointInsidePolygon(x, y, nodeShapes["roundrectangle"].points,
centerX, centerY, width - 2 * cornerRadius, height, [0, -1], padding)) {
return true;
}
var checkInEllipse = function(x, y, centerX, centerY, width, height, padding) {
x -= centerX;
y -= centerY;
x /= (width / 2 + padding);
y /= (height / 2 + padding);
return (Math.pow(x, 2) + Math.pow(y, 2) <= 1);
}
// Check top left quarter circle
if (checkInEllipse(x, y,
centerX - width / 2 + cornerRadius,
centerY - height / 2 + cornerRadius,
cornerRadius * 2, cornerRadius * 2, padding)) {
return true;
}
/*
if (renderer.boxIntersectEllipse(x, y, x, y, padding,
cornerRadius * 2, cornerRadius * 2,
centerX - width + cornerRadius,
centerY - height + cornerRadius)) {
return true;
}
*/
// Check top right quarter circle
if (checkInEllipse(x, y,
centerX + width / 2 - cornerRadius,
centerY - height / 2 + cornerRadius,
cornerRadius * 2, cornerRadius * 2, padding)) {
return true;
}
// Check bottom right quarter circle
if (checkInEllipse(x, y,
centerX + width / 2 - cornerRadius,
centerY + height / 2 - cornerRadius,
cornerRadius * 2, cornerRadius * 2, padding)) {
return true;
}
// Check bottom left quarter circle
if (checkInEllipse(x, y,
centerX - width / 2 + cornerRadius,
centerY + height / 2 - cornerRadius,
cornerRadius * 2, cornerRadius * 2, padding)) {
return true;
}
return false;
}
};
nodeShapes["roundrectangle2"] = {
roundness: 4.99,
draw: function(node, width, height) {
if (width <= roundness * 2) {
return;
}
renderer.drawPolygon(node._private.position.x,
node._private.position.y, width, height, nodeSapes["roundrectangle2"].points);
},
intersectLine: function(node, width, height, x, y) {
return renderer.findPolygonIntersection(
node, width, height, x, y, nodeShapes["square"].points);
},
// TODO: Treat rectangle as sharp-cornered for now. This is a not-large approximation.
intersectBox: function(x1, y1, x2, y2, width, height, centerX, centerY, padding) {
var points = nodeShapes["square"].points;
/*
return renderer.boxIntersectPolygon(
x1, y1, x2, y2,
points,
*/
}
}
/*
function PolygonNodeShape(points) {
this.points = points;
this.draw = function(context, node, width, height) {
renderer.drawPolygon(context,
node._private.position.x,
node._private.position.y,
width, height, nodeShapes["pentagon"].points);
};
this.drawPath =
}
*/
nodeShapes["pentagon"] = {
points: generateUnitNgonPoints(5, 0),
draw: function(context, centerX, centerY, width, height) {
renderer.drawPolygon(context,
centerX, centerY,
width, height, nodeShapes["pentagon"].points);
},
drawPath: function(context, centerX, centerY, width, height) {
renderer.drawPolygonPath(context,
centerX, centerY,
width, height, nodeShapes["pentagon"].points);
},
intersectLine: function(nodeX, nodeY, width, height, x, y, padding) {
return renderer.polygonIntersectLine(
x, y,
nodeShapes["pentagon"].points,
nodeX,
nodeY,
width / 2, height / 2,
padding);
},
intersectBox: function(
x1, y1, x2, y2, width, height, centerX, centerY, padding) {
var points = nodeShapes["pentagon"].points;
return renderer.boxIntersectPolygon(
x1, y1, x2, y2,
points, width, height, centerX, centerY, [0, -1], padding);
},
checkPointRough: function(
x, y, padding, width, height, centerX, centerY) {
return renderer.checkInBoundingBox(
x, y, nodeShapes["pentagon"].points,
padding, width, height, centerX, centerY);
},
checkPoint: function(
x, y, padding, width, height, centerX, centerY) {
return renderer.pointInsidePolygon(x, y, nodeShapes["pentagon"].points,
centerX, centerY, width, height, [0, -1], padding);
}
}
nodeShapes["hexagon"] = {
points: generateUnitNgonPoints(6, 0),
draw: function(context, centerX, centerY, width, height) {
renderer.drawPolygon(context,
centerX, centerY,
width, height,
nodeShapes["hexagon"].points);
},
drawPath: function(context, centerX, centerY, width, height) {
renderer.drawPolygonPath(context,
centerX, centerY,
width, height,
nodeShapes["hexagon"].points);
},
intersectLine: function(nodeX, nodeY, width, height, x, y, padding) {
return renderer.polygonIntersectLine(
x, y,
nodeShapes["hexagon"].points,
nodeX,
nodeY,
width / 2, height / 2,
padding);
},
intersectBox: function(
x1, y1, x2, y2, width, height, centerX, centerY, padding) {
var points = nodeShapes["hexagon"].points;
return renderer.boxIntersectPolygon(
x1, y1, x2, y2,
points, width, height, centerX, centerY, [0, -1], padding);
},
checkPointRough: function(
x, y, padding, width, height, centerX, centerY) {
return renderer.checkInBoundingBox(
x, y, nodeShapes["hexagon"].points,
padding, width, height, centerX, centerY);
},
checkPoint: function(
x, y, padding, width, height, centerX, centerY) {
return renderer.pointInsidePolygon(x, y, nodeShapes["hexagon"].points,
centerX, centerY, width, height, [0, -1], padding);
}
}
nodeShapes["heptagon"] = {
points: generateUnitNgonPoints(7, 0),
draw: function(context, centerX, centerY, width, height) {
renderer.drawPolygon(context,
centerX, centerY,
width, height,
nodeShapes["heptagon"].points);
},
drawPath: function(context, centerX, centerY, width, height) {
renderer.drawPolygonPath(context,
centerX, centerY,
width, height,
nodeShapes["heptagon"].points);
},
intersectLine: function(nodeX, nodeY, width, height, x, y, padding) {
return renderer.polygonIntersectLine(
x, y,
nodeShapes["heptagon"].points,
nodeX,
nodeY,
width / 2, height / 2,
padding);
},
intersectBox: function(
x1, y1, x2, y2, width, height, centerX, centerY, padding) {
var points = nodeShapes["heptagon"].points;
return renderer.boxIntersectPolygon(
x1, y1, x2, y2,
points, width, height, centerX, centerY, [0, -1], padding);
},
checkPointRough: function(
x, y, padding, width, height, centerX, centerY) {
return renderer.checkInBoundingBox(
x, y, nodeShapes["heptagon"].points,
padding, width, height, centerX, centerY);
},
checkPoint: function(
x, y, padding, width, height, centerX, centerY) {
return renderer.pointInsidePolygon(x, y, nodeShapes["heptagon"].points,
centerX, centerY, width, height, [0, -1], padding);
}
}
nodeShapes["octagon"] = {
points: generateUnitNgonPoints(8, 0),
draw: function(context, centerX, centerY, width, height) {
renderer.drawPolygon(context,
centerX, centerY,
width, height,
nodeShapes["octagon"].points);
},
drawPath: function(context, centerX, centerY, width, height) {
renderer.drawPolygonPath(context,
centerX, centerY,
width, height,
nodeShapes["octagon"].points);
},
intersectLine: function(nodeX, nodeY, width, height, x, y, padding) {
return renderer.polygonIntersectLine(
x, y,
nodeShapes["octagon"].points,
nodeX,
nodeY,
width / 2, height / 2,
padding);
},
intersectBox: function(
x1, y1, x2, y2, width, height, centerX, centerY, padding) {
var points = nodeShapes["octagon"].points;
return renderer.boxIntersectPolygon(
x1, y1, x2, y2,
points, width, height, centerX, centerY, [0, -1], padding);
},
checkPointRough: function(
x, y, padding, width, height, centerX, centerY) {
return renderer.checkInBoundingBox(
x, y, nodeShapes["octagon"].points,
padding, width, height, centerX, centerY);
},
checkPoint: function(
x, y, padding, width, height, centerX, centerY) {
return renderer.pointInsidePolygon(x, y, nodeShapes["octagon"].points,
centerX, centerY, width, height, [0, -1], padding);
}
};
var star5Points = new Array(20);
{
var outerPoints = generateUnitNgonPoints(5, 0);
var innerPoints = generateUnitNgonPoints(5, Math.PI / 5);
// console.log(outerPoints);
// console.log(innerPoints);
// Outer radius is 1; inner radius of star is smaller
var innerRadius = 0.5 * (3 - Math.sqrt(5));
innerRadius *= 1.57;
for (var i=0;i 0) {
var expandedLineSet = renderer.expandPolygon(
transformedPoints,
-padding);
points = renderer.joinLines(expandedLineSet);
} else {
points = transformedPoints;
}
var x1, y1, x2, y2;
var y3;
// Intersect with vertical line through (x, y)
var up = 0;
var down = 0;
for (var i = 0; i < points.length / 2; i++) {
x1 = points[i * 2];
y1 = points[i * 2 + 1];
if (i + 1 < points.length / 2) {
x2 = points[(i + 1) * 2];
y2 = points[(i + 1) * 2 + 1];
} else {
x2 = points[(i + 1 - points.length / 2) * 2];
y2 = points[(i + 1 - points.length / 2) * 2 + 1];
}
//* console.log("line from (" + x1 + ", " + y1 + ") to (" + x2 + ", " + y2 + ")");
//& console.log(x1, x, x2);
if (x1 == x && x2 == x) {
} else if ((x1 >= x && x >= x2)
|| (x1 <= x && x <= x2)) {
y3 = (x - x1) / (x2 - x1) * (y2 - y1) + y1;
if (y3 > y) {
up++;
}
if (y3 < y) {
down++;
}
//* console.log(y3, y);
} else {
//* console.log("22");
continue;
}
}
//* console.log("up: " + up + ", down: " + down);
if (up % 2 == 0) {
return false;
} else {
return true;
}
}
}
// @O Polygon drawing
CanvasRenderer.prototype.drawPolygonPath = function(
context, x, y, width, height, points) {
//context.save();
context.translate(x, y);
context.scale(width / 2, height / 2);
context.beginPath();
context.moveTo(points[0], points[1]);
for (var i = 1; i < points.length / 2; i++) {
context.lineTo(points[i * 2], points[i * 2 + 1]);
}
context.closePath();
context.scale(2/width, 2/height);
context.translate(-x, -y);
// context.restore();
}
CanvasRenderer.prototype.drawPolygon = function(
context, x, y, width, height, points) {
// Draw path
this.drawPolygonPath(context, x, y, width, height, points);
// Fill path
context.fill();
}
CanvasRenderer.prototype.getRoundRectangleRadius = function(width, height) {
// Set the default radius, unless half of width or height is smaller than default
return Math.min(width / 2, height / 2, 10);
}
// Round rectangle drawing
CanvasRenderer.prototype.drawRoundRectanglePath = function(
context, x, y, width, height, radius) {
var halfWidth = width / 2;
var halfHeight = height / 2;
var cornerRadius = this.getRoundRectangleRadius(width, height);
context.translate(x, y);
context.beginPath();
// Start at top middle
context.moveTo(0, -halfHeight);
// Arc from middle top to right side
context.arcTo(halfWidth, -halfHeight, halfWidth, 0, cornerRadius);
// Arc from right side to bottom
context.arcTo(halfWidth, halfHeight, 0, halfHeight, cornerRadius);
// Arc from bottom to left side
context.arcTo(-halfWidth, halfHeight, -halfWidth, 0, cornerRadius);
// Arc from left side to topBorder
context.arcTo(-halfWidth, -halfHeight, 0, -halfHeight, cornerRadius);
// Join line
context.lineTo(0, -halfHeight);
/*
void arc(unrestricted double x,
unrestricted double y,
unrestricted double radius,
unrestricted double startAngle,
unrestricted double endAngle,
optional boolean anticlockwise = false);
*/
/*
context.arc(-width / 2 + cornerRadius,
-height / 2 + cornerRadius,
cornerRadius,
0,
Math.PI * 2 * 0.999);
*/
context.closePath();
context.translate(-x, -y);
}
CanvasRenderer.prototype.drawRoundRectangle = function(
context, x, y, width, height, radius) {
this.drawRoundRectanglePath(context, x, y, width, height, radius);
context.fill();
}
CanvasRenderer.prototype.roundRectangleIntersectLine = function(
x, y, nodeX, nodeY, width, height, padding) {
var cornerRadius = this.getRoundRectangleRadius(width, height);
var halfWidth = width / 2;
var halfHeight = height / 2;
// Check intersections with straight line segments
var straightLineIntersections;
// Top segment, left to right
{
var topStartX = nodeX - halfWidth + cornerRadius - padding;
var topStartY = nodeY - halfHeight - padding;
var topEndX = nodeX + halfWidth - cornerRadius + padding;
var topEndY = topStartY;
straightLineIntersections = this.finiteLinesIntersect(
x, y, nodeX, nodeY, topStartX, topStartY, topEndX, topEndY, false);
if (straightLineIntersections.length > 0) {
return straightLineIntersections;
}
}
// Right segment, top to bottom
{
var rightStartX = nodeX + halfWidth + padding;
var rightStartY = nodeY - halfHeight + cornerRadius - padding;
var rightEndX = rightStartX;
var rightEndY = nodeY + halfHeight - cornerRadius + padding;
straightLineIntersections = this.finiteLinesIntersect(
x, y, nodeX, nodeY, rightStartX, rightStartY, rightEndX, rightEndY, false);
if (straightLineIntersections.length > 0) {
return straightLineIntersections;
}
}
// Bottom segment, left to right
{
var bottomStartX = nodeX - halfWidth + cornerRadius - padding;
var bottomStartY = nodeY + halfHeight + padding;
var bottomEndX = nodeX + halfWidth - cornerRadius + padding;
var bottomEndY = bottomStartY;
straightLineIntersections = this.finiteLinesIntersect(
x, y, nodeX, nodeY, bottomStartX, bottomStartY, bottomEndX, bottomEndY, false);
if (straightLineIntersections.length > 0) {
return straightLineIntersections;
}
}
// Left segment, top to bottom
{
var leftStartX = nodeX - halfWidth - padding;
var leftStartY = nodeY - halfHeight + cornerRadius - padding;
var leftEndX = leftStartX;
var leftEndY = nodeY + halfHeight - cornerRadius + padding;
straightLineIntersections = this.finiteLinesIntersect(
x, y, nodeX, nodeY, leftStartX, leftStartY, leftEndX, leftEndY, false);
if (straightLineIntersections.length > 0) {
return straightLineIntersections;
}
}
// Check intersections with arc segments
var arcIntersections;
// Top Left
{
var topLeftCenterX = nodeX - halfWidth + cornerRadius;
var topLeftCenterY = nodeY - halfHeight + cornerRadius
arcIntersections = this.intersectLineCircle(
x, y, nodeX, nodeY,
topLeftCenterX, topLeftCenterY, cornerRadius + padding);
// Ensure the intersection is on the desired quarter of the circle
if (arcIntersections.length > 0
&& arcIntersections[0] <= topLeftCenterX
&& arcIntersections[1] <= topLeftCenterY) {
return [arcIntersections[0], arcIntersections[1]];
}
}
// Top Right
{
var topRightCenterX = nodeX + halfWidth - cornerRadius;
var topRightCenterY = nodeY - halfHeight + cornerRadius
arcIntersections = this.intersectLineCircle(
x, y, nodeX, nodeY,
topRightCenterX, topRightCenterY, cornerRadius + padding);
// Ensure the intersection is on the desired quarter of the circle
if (arcIntersections.length > 0
&& arcIntersections[0] >= topRightCenterX
&& arcIntersections[1] <= topRightCenterY) {
return [arcIntersections[0], arcIntersections[1]];
}
}
// Bottom Right
{
var bottomRightCenterX = nodeX + halfWidth - cornerRadius;
var bottomRightCenterY = nodeY + halfHeight - cornerRadius
arcIntersections = this.intersectLineCircle(
x, y, nodeX, nodeY,
bottomRightCenterX, bottomRightCenterY, cornerRadius + padding);
// Ensure the intersection is on the desired quarter of the circle
if (arcIntersections.length > 0
&& arcIntersections[0] >= bottomRightCenterX
&& arcIntersections[1] >= bottomRightCenterY) {
return [arcIntersections[0], arcIntersections[1]];
}
}
// Bottom Left
{
var bottomLeftCenterX = nodeX - halfWidth + cornerRadius;
var bottomLeftCenterY = nodeY + halfHeight - cornerRadius
arcIntersections = this.intersectLineCircle(
x, y, nodeX, nodeY,
bottomLeftCenterX, bottomLeftCenterY, cornerRadius + padding);
// Ensure the intersection is on the desired quarter of the circle
if (arcIntersections.length > 0
&& arcIntersections[0] <= bottomLeftCenterX
&& arcIntersections[1] >= bottomLeftCenterY) {
return [arcIntersections[0], arcIntersections[1]];
}
}
}
CanvasRenderer.prototype.roundRectangleIntersectBox = function(
boxX1, boxY1, boxX2, boxY2, width, height, centerX, centerY, padding) {
// We have the following shpae
// _____
// _| |_
// | |
// |_ _|
// |_____|
//
// With a quarter circle at each corner.
var cornerRadius = this.getRoundRectangleRadius(width, height);
var hBoxTopLeftX = centerX - width / 2 - padding;
var hBoxTopLeftY = centerY - height / 2 + cornerRadius - padding;
var hBoxBottomRightX = centerX + width / 2 + padding;
var hBoxBottomRightY = centerY + height / 2 - cornerRadius + padding;
var vBoxTopLeftX = centerX - width / 2 + cornerRadius - padding;
var vBoxTopLeftY = centerY - height / 2 - padding;
var vBoxBottomRightX = centerX + width / 2 - cornerRadius + padding;
var vBoxBottomRightY = centerY + height / 2 + padding;
// Check if the box is out of bounds
var boxMinX = Math.min(boxX1, boxX2);
var boxMaxX = Math.max(boxX1, boxX2);
var boxMinY = Math.min(boxY1, boxY2);
var boxMaxY = Math.max(boxY1, boxY2);
if (boxMaxX < hBoxTopLeftX) {
return false;
} else if (boxMinX > hBoxBottomRightX) {
return false;
}
if (boxMaxY < vBoxTopLeftY) {
return false;
} else if (boxMinY > vBoxBottomRightY) {
return false;
}
// Check if an hBox point is in given box
if (hBoxTopLeftX >= boxMinX && hBoxTopLeftX <= boxMaxX
&& hBoxTopLeftY >= boxMinY && hBoxTopLeftY <= boxMaxY) {
return true;
}
if (hBoxBottomRightX >= boxMinX && hBoxBottomRightX <= boxMaxX
&& hBoxTopLeftY >= boxMinY && hBoxTopLeftY <= boxMaxY) {
return true;
}
if (hBoxBottomRightX >= boxMinX && hBoxBottomRightX <= boxMaxX
&& hBoxBottomRightY >= boxMinY && hBoxBottomRightY <= boxMaxY) {
return true;
}
if (hBoxTopLeftX >= boxMinX && hBoxTopLeftX <= boxMaxX
&& hBoxBottomRightY >= boxMinY && hBoxBottomRightY <= boxMaxY) {
return true;
}
// Check if a given point box is in the hBox
if (boxMinX >= hBoxTopLeftX && boxMinX <= hBoxBottomRightX
&& boxMinY >= hBoxTopLeftY && boxMinY <= hBoxBottomRightY) {
return true;
}
if (boxMaxX >= hBoxTopLeftX && boxMaxX <= hBoxBottomRightX
&& boxMinY >= hBoxTopLeftY && boxMinY <= hBoxBottomRightY) {
return true;
}
if (boxMaxX >= hBoxTopLeftX && boxMaxX <= hBoxBottomRightX
&& boxMaxY >= hBoxTopLeftY && boxMaxY <= hBoxBottomRightY) {
return true;
}
if (boxMinX >= hBoxTopLeftX && boxMinX <= hBoxBottomRightX
&& boxMaxY >= hBoxTopLeftY && boxMaxY <= hBoxBottomRightY) {
return true;
}
// Check if an vBox point is in given box
if (vBoxTopLeftX >= boxMinX && vBoxTopLeftX <= boxMaxX
&& vBoxTopLeftY >= boxMinY && vBoxTopLeftY <= boxMaxY) {
return true;
}
if (vBoxBottomRightX >= boxMinX && vBoxBottomRightX <= boxMaxX
&& vBoxTopLeftY >= boxMinY && vBoxTopLeftY <= boxMaxY) {
return true;
}
if (vBoxBottomRightX >= boxMinX && vBoxBottomRightX <= boxMaxX
&& vBoxBottomRightY >= boxMinY && vBoxBottomRightY <= boxMaxY) {
return true;
}
if (vBoxTopLeftX >= boxMinX && vBoxTopLeftX <= boxMaxX
&& vBoxBottomRightY >= boxMinY && vBoxBottomRightY <= boxMaxY) {
return true;
}
// Check if a given point box is in the vBox
if (boxMinX >= vBoxTopLeftX && boxMinX <= vBoxBottomRightX
&& boxMinY >= vBoxTopLeftY && boxMinY <= vBoxBottomRightY) {
return true;
}
if (boxMaxX >= vBoxTopLeftX && boxMaxX <= vBoxBottomRightX
&& boxMinY >= vBoxTopLeftY && boxMinY <= vBoxBottomRightY) {
return true;
}
if (boxMaxX >= vBoxTopLeftX && boxMaxX <= vBoxBottomRightX
&& boxMaxY >= vBoxTopLeftY && boxMaxY <= vBoxBottomRightY) {
return true;
}
if (boxMinX >= vBoxTopLeftX && boxMinX <= vBoxBottomRightX
&& boxMaxY >= vBoxTopLeftY && boxMaxY <= vBoxBottomRightY) {
return true;
}
// Lastly, check if one of the ellipses coincide with the box
if (this.boxIntersectEllipse(boxMinX, boxMinY, boxMaxX, boxMaxY, padding,
cornerRadius * 2, cornerRadius * 2, vBoxTopLeftX + padding, hBoxTopLeftY + padding)) {
return true;
}
if (this.boxIntersectEllipse(boxMinX, boxMinY, boxMaxX, boxMaxY, padding,
cornerRadius * 2, cornerRadius * 2, vBoxBottomRightX - padding, hBoxTopLeftY + padding)) {
return true;
}
if (this.boxIntersectEllipse(boxMinX, boxMinY, boxMaxX, boxMaxY, padding,
cornerRadius * 2, cornerRadius * 2, vBoxBottomRightX - padding, hBoxBottomRightY - padding)) {
return true;
}
if (this.boxIntersectEllipse(boxMinX, boxMinY, boxMaxX, boxMaxY, padding,
cornerRadius * 2, cornerRadius * 2, vBoxTopLeftX + padding, hBoxBottomRightY - padding)) {
return true;
}
return false;
}
// @O Approximate collision functions
CanvasRenderer.prototype.checkInBoundingCircle = function(
x, y, farthestPointSqDistance, padding, width, height, centerX, centerY) {
x = (x - centerX) / (width + padding);
y = (y - centerY) / (height + padding);
return (x * x + y * y) <= farthestPointSqDistance;
}
CanvasRenderer.prototype.checkInBoundingBox = function(
x, y, points, padding, width, height, centerX, centerY) {
// Assumes width, height >= 0, points.length > 0
var minX = points[0], minY = points[1];
var maxX = points[0], maxY = points[1];
for (var i = 1; i < points.length / 2; i++) {
if (points[i * 2] < minX) {
minX = points[i * 2];
} else if (points[i * 2] > maxX) {
maxX = points[i * 2];
}
if (points[i * 2 + 1] < minY) {
minY = points[i * 2 + 1];
} else if (points[i * 2 + 1] > maxY) {
maxY = points[i * 2 + 1];
}
}
x -= centerX;
y -= centerY;
x /= width;
y /= height;
if (x < minX) {
return false;
} else if (x > maxX) {
return false;
}
if (y < minY) {
return false;
} else if (y > maxY) {
return false;
}
return true;
}
// @O Straight/bezier edge approximate collision, precise collision, and distance calculation functions
{
CanvasRenderer.prototype.boxInBezierVicinity = function(
x1box, y1box, x2box, y2box, x1, y1, x2, y2, x3, y3, tolerance) {
// Return values:
// 0 - curve is not in box
// 1 - curve may be in box; needs precise check
// 2 - curve is in box
// midpoint
var midX = 0.25 * x1 + 0.5 * x2 + 0.25 * x3;
var midY = 0.25 * y1 + 0.5 * y2 + 0.25 * y3;
var boxMinX = Math.min(x1box, x2box) - tolerance;
var boxMinY = Math.min(y1box, y2box) - tolerance;
var boxMaxX = Math.max(x1box, x2box) + tolerance;
var boxMaxY = Math.max(y1box, y2box) + tolerance;
if (x1 >= boxMinX && x1 <= boxMaxX && y1 >= boxMinY && y1 <= boxMaxY) { // (x1, y1) in box
return 1;
} else if (x3 >= boxMinX && x3 <= boxMaxX && y3 >= boxMinY && y3 <= boxMaxY) { // (x3, y3) in box
return 1;
} else if (midX >= boxMinX && midX <= boxMaxX && midY >= boxMinY && midY <= boxMaxY) { // (midX, midY) in box
return 1;
} else if (x2 >= boxMinX && x2 <= boxMaxX && y2 >= boxMinY && y2 <= boxMaxY) { // ctrl pt in box
return 1;
}
var curveMinX = Math.min(x1, midX, x3);
var curveMinY = Math.min(y1, midY, y3);
var curveMaxX = Math.max(x1, midX, x3);
var curveMaxY = Math.max(y1, midY, y3);
/*
console.log(curveMinX + ", " + curveMinY + ", " + curveMaxX
+ ", " + curveMaxY);
if (curveMinX == undefined) {
console.log("undefined curveMinX: " + x1 + ", " + x2 + ", " + x3);
}
*/
if (curveMinX > boxMaxX
|| curveMaxX < boxMinX
|| curveMinY > boxMaxY
|| curveMaxY < boxMinY) {
return 0;
}
return 1;
}
CanvasRenderer.prototype.checkBezierInBox = function(
x1box, y1box, x2box, y2box, x1, y1, x2, y2, x3, y3, tolerance) {
function qbezierAt(p0, p1, p2, t){
return (1 - t)*(1 - t)*p0 + 2*(1 - t)*t*p1 + t*t*p2;
}
function sampleInBox(t){
var x = qbezierAt(x1, x2, x3, t);
var y = qbezierAt(y1, y2, y3, t);
return x1box <= x && x <= x2box
&& y1box <= y && y <= y2box
;
}
for( var t = 0; t <= 1; t += 0.25 ){
if( !sampleInBox(t) ){
return false;
}
}
return true;
};
CanvasRenderer.prototype.checkStraightEdgeInBox = function(
x1box, y1box, x2box, y2box, x1, y1, x2, y2, tolerance) {
return x1box <= x1 && x1 <= x2box
&& x1box <= x2 && x2 <= x2box
&& y1box <= y1 && y1 <= y2box
&& y1box <= y2 && y2 <= y2box
;
};
CanvasRenderer.prototype.checkStraightEdgeCrossesBox = function(
x1box, y1box, x2box, y2box, x1, y1, x2, y2, tolerance) {
//console.log(arguments);
var boxMinX = Math.min(x1box, x2box) - tolerance;
var boxMinY = Math.min(y1box, y2box) - tolerance;
var boxMaxX = Math.max(x1box, x2box) + tolerance;
var boxMaxY = Math.max(y1box, y2box) + tolerance;
// Check left + right bounds
var aX = x2 - x1;
var bX = x1;
var yValue;
// Top and bottom
var aY = y2 - y1;
var bY = y1;
var xValue;
if (Math.abs(aX) < 0.0001) {
return (x1 >= boxMinX && x1 <= boxMaxX
&& Math.min(y1, y2) <= boxMinY
&& Math.max(y1, y2) >= boxMaxY);
}
var tLeft = (boxMinX - bX) / aX;
if (tLeft > 0 && tLeft <= 1) {
yValue = aY * tLeft + bY;
if (yValue >= boxMinY && yValue <= boxMaxY) {
return true;
}
}
var tRight = (boxMaxX - bX) / aX;
if (tRight > 0 && tRight <= 1) {
yValue = aY * tRight + bY;
if (yValue >= boxMinY && yValue <= boxMaxY) {
return true;
}
}
var tTop = (boxMinY - bY) / aY;
if (tTop > 0 && tTop <= 1) {
xValue = aX * tTop + bX;
if (xValue >= boxMinX && xValue <= boxMaxX) {
return true;
}
}
var tBottom = (boxMaxY - bY) / aY;
if (tBottom > 0 && tBottom <= 1) {
xValue = aX * tBottom + bX;
if (xValue >= boxMinX && xValue <= boxMaxX) {
return true;
}
}
return false;
}
CanvasRenderer.prototype.checkBezierCrossesBox = function(
x1box, y1box, x2box, y2box, x1, y1, x2, y2, x3, y3, tolerance) {
var boxMinX = Math.min(x1box, x2box) - tolerance;
var boxMinY = Math.min(y1box, y2box) - tolerance;
var boxMaxX = Math.max(x1box, x2box) + tolerance;
var boxMaxY = Math.max(y1box, y2box) + tolerance;
if (x1 >= boxMinX && x1 <= boxMaxX && y1 >= boxMinY && y1 <= boxMaxY) {
return true;
} else if (x3 >= boxMinX && x3 <= boxMaxX && y3 >= boxMinY && y3 <= boxMaxY) {
return true;
}
var aX = x1 - 2 * x2 + x3;
var bX = -2 * x1 + 2 * x2;
var cX = x1;
var xIntervals = [];
if (Math.abs(aX) < 0.0001) {
var leftParam = (boxMinX - x1) / bX;
var rightParam = (boxMaxX - x1) / bX;
xIntervals.push(leftParam, rightParam);
} else {
// Find when x coordinate of the curve crosses the left side of the box
var discriminantX1 = bX * bX - 4 * aX * (cX - boxMinX);
var tX1, tX2;
if (discriminantX1 > 0) {
var sqrt = Math.sqrt(discriminantX1);
tX1 = (-bX + sqrt) / (2 * aX);
tX2 = (-bX - sqrt) / (2 * aX);
xIntervals.push(tX1, tX2);
}
var discriminantX2 = bX * bX - 4 * aX * (cX - boxMaxX);
var tX3, tX4;
if (discriminantX2 > 0) {
var sqrt = Math.sqrt(discriminantX2);
tX3 = (-bX + sqrt) / (2 * aX);
tX4 = (-bX - sqrt) / (2 * aX);
xIntervals.push(tX3, tX4);
}
}
xIntervals.sort(function(a, b) { return a - b; });
var aY = y1 - 2 * y2 + y3;
var bY = -2 * y1 + 2 * y2;
var cY = y1;
var yIntervals = [];
if (Math.abs(aY) < 0.0001) {
var topParam = (boxMinY - y1) / bY;
var bottomParam = (boxMaxY - y1) / bY;
yIntervals.push(topParam, bottomParam);
} else {
var discriminantY1 = bY * bY - 4 * aY * (cY - boxMinY);
var tY1, tY2;
if (discriminantY1 > 0) {
var sqrt = Math.sqrt(discriminantY1);
tY1 = (-bY + sqrt) / (2 * aY);
tY2 = (-bY - sqrt) / (2 * aY);
yIntervals.push(tY1, tY2);
}
var discriminantY2 = bY * bY - 4 * aY * (cY - boxMaxY);
var tY3, tY4;
if (discriminantY2 > 0) {
var sqrt = Math.sqrt(discriminantY2);
tY3 = (-bY + sqrt) / (2 * aY);
tY4 = (-bY - sqrt) / (2 * aY);
yIntervals.push(tY3, tY4);
}
}
yIntervals.sort(function(a, b) { return a - b; });
for (var index = 0; index < xIntervals.length; index += 2) {
for (var yIndex = 1; yIndex < yIntervals.length; yIndex += 2) {
// Check if there exists values for the Bezier curve
// parameter between 0 and 1 where both the curve's
// x and y coordinates are within the bounds specified by the box
if (xIntervals[index] < yIntervals[yIndex]
&& yIntervals[yIndex] >= 0.0
&& xIntervals[index] <= 1.0
&& xIntervals[index + 1] > yIntervals[yIndex - 1]
&& yIntervals[yIndex - 1] <= 1.0
&& xIntervals[index + 1] >= 0.0) {
return true;
}
}
}
return false;
}
CanvasRenderer.prototype.inLineVicinity = function(x, y, lx1, ly1, lx2, ly2, tolerance){
var t = tolerance;
var x1 = Math.min(lx1, lx2);
var x2 = Math.max(lx1, lx2);
var y1 = Math.min(ly1, ly2);
var y2 = Math.max(ly1, ly2);
return x1 - t <= x && x <= x2 + t
&& y1 - t <= y && y <= y2 + t;
};
CanvasRenderer.prototype.inBezierVicinity = function(
x, y, x1, y1, x2, y2, x3, y3, toleranceSquared) {
// Middle point occurs when t = 0.5, this is when the Bezier
// is closest to (x2, y2)
var middlePointX = 0.25 * x1 + 0.5 * x2 + 0.25 * x3;
var middlePointY = 0.25 * y1 + 0.5 * y2 + 0.25 * y3;
// a rough bounding box of the bezier curve
var bb = {
x1: Math.min( x1, x3, middlePointX ),
x2: Math.max( x1, x3, middlePointX ),
y1: Math.min( y1, y3, middlePointY ),
y2: Math.max( y1, y3, middlePointY )
};
// if outside the rough bounding box for the bezier, then it can't be a hit
if( x < bb.x1 || x > bb.x2 || y < bb.y1 || y > bb.y2 ){
// console.log('bezier out of rough bb')
return false;
} else {
// console.log('do more expensive check');
}
var displacementX, displacementY, offsetX, offsetY;
var dotProduct, dotSquared, hypSquared;
var outside = function(x, y, startX, startY, endX, endY,
toleranceSquared, counterClockwise) {
dotProduct = (endY - startY) * (x - startX) + (startX - endX) * (y - startY);
dotSquared = dotProduct * dotProduct;
sideSquared = (endY - startY) * (endY - startY)
+ (startX - endX) * (startX - endX);
if (counterClockwise) {
if (dotProduct > 0) {
return false;
}
} else {
if (dotProduct < 0) {
return false;
}
}
return (dotSquared / sideSquared > toleranceSquared);
};
// Used to check if the test polygon winding is clockwise or counterclockwise
var testPointX = (middlePointX + x2) / 2.0;
var testPointY = (middlePointY + y2) / 2.0;
var counterClockwise = true;
// The test point is always inside
if (outside(testPointX, testPointY, x1, y1, x2, y2, 0, counterClockwise)) {
counterClockwise = !counterClockwise;
}
/*
return (!outside(x, y, x1, y1, x2, y2, toleranceSquared, counterClockwise)
&& !outside(x, y, x2, y2, x3, y3, toleranceSquared, counterClockwise)
&& !outside(x, y, x3, y3, middlePointX, middlePointY, toleranceSquared,
counterClockwise)
&& !outside(x, y, middlePointX, middlePointY, x1, y1, toleranceSquared,
counterClockwise)
);
*/
return (!outside(x, y, x1, y1, x2, y2, toleranceSquared, counterClockwise)
&& !outside(x, y, x2, y2, x3, y3, toleranceSquared, counterClockwise)
&& !outside(x, y, x3, y3, x1, y1, toleranceSquared,
counterClockwise)
);
}
CanvasRenderer.prototype.solveCubic = function(a, b, c, d, result) {
// Solves a cubic function, returns root in form [r1, i1, r2, i2, r3, i3], where
// r is the real component, i is the imaginary component
// An implementation of the Cardano method from the year 1545
// http://en.wikipedia.org/wiki/Cubic_function#The_nature_of_the_roots
b /= a;
c /= a;
d /= a;
var discriminant, q, r, dum1, s, t, term1, r13;
q = (3.0 * c - (b * b)) / 9.0;
r = -(27.0 * d) + b * (9.0 * c - 2.0 * (b * b));
r /= 54.0;
discriminant = q * q * q + r * r;
result[1] = 0;
term1 = (b / 3.0);
if (discriminant > 0) {
s = r + Math.sqrt(discriminant);
s = ((s < 0) ? -Math.pow(-s, (1.0 / 3.0)) : Math.pow(s, (1.0 / 3.0)));
t = r - Math.sqrt(discriminant);
t = ((t < 0) ? -Math.pow(-t, (1.0 / 3.0)) : Math.pow(t, (1.0 / 3.0)));
result[0] = -term1 + s + t;
term1 += (s + t) / 2.0;
result[4] = result[2] = -term1;
term1 = Math.sqrt(3.0) * (-t + s) / 2;
result[3] = term1;
result[5] = -term1;
return;
}
result[5] = result[3] = 0;
if (discriminant == 0) {
r13 = ((r < 0) ? -Math.pow(-r, (1.0 / 3.0)) : Math.pow(r, (1.0 / 3.0)));
result[0] = -term1 + 2.0 * r13;
result[4] = result[2] = -(r13 + term1);
return;
}
q = -q;
dum1 = q * q * q;
dum1 = Math.acos(r / Math.sqrt(dum1));
r13 = 2.0 * Math.sqrt(q);
result[0] = -term1 + r13 * Math.cos(dum1 / 3.0);
result[2] = -term1 + r13 * Math.cos((dum1 + 2.0 * Math.PI) / 3.0);
result[4] = -term1 + r13 * Math.cos((dum1 + 4.0 * Math.PI) / 3.0);
return;
}
CanvasRenderer.prototype.sqDistanceToQuadraticBezier = function(
x, y, x1, y1, x2, y2, x3, y3) {
// Find minimum distance by using the minimum of the distance
// function between the given point and the curve
// This gives the coefficients of the resulting cubic equation
// whose roots tell us where a possible minimum is
// (Coefficients are divided by 4)
var a = 1.0 * x1*x1 - 4*x1*x2 + 2*x1*x3 + 4*x2*x2 - 4*x2*x3 + x3*x3
+ y1*y1 - 4*y1*y2 + 2*y1*y3 + 4*y2*y2 - 4*y2*y3 + y3*y3;
var b = 1.0 * 9*x1*x2 - 3*x1*x1 - 3*x1*x3 - 6*x2*x2 + 3*x2*x3
+ 9*y1*y2 - 3*y1*y1 - 3*y1*y3 - 6*y2*y2 + 3*y2*y3;
var c = 1.0 * 3*x1*x1 - 6*x1*x2 + x1*x3 - x1*x + 2*x2*x2 + 2*x2*x - x3*x
+ 3*y1*y1 - 6*y1*y2 + y1*y3 - y1*y + 2*y2*y2 + 2*y2*y - y3*y;
var d = 1.0 * x1*x2 - x1*x1 + x1*x - x2*x
+ y1*y2 - y1*y1 + y1*y - y2*y;
debug("coefficients: " + a / a + ", " + b / a + ", " + c / a + ", " + d / a);
var roots = [];
// Use the cubic solving algorithm
this.solveCubic(a, b, c, d, roots);
var zeroThreshold = 0.0000001;
var params = [];
for (var index = 0; index < 6; index += 2) {
if (Math.abs(roots[index + 1]) < zeroThreshold
&& roots[index] >= 0
&& roots[index] <= 1.0) {
params.push(roots[index]);
}
}
params.push(1.0);
params.push(0.0);
var minDistanceSquared = -1;
var closestParam;
var curX, curY, distSquared;
for (var i = 0; i < params.length; i++) {
curX = Math.pow(1.0 - params[i], 2.0) * x1
+ 2.0 * (1 - params[i]) * params[i] * x2
+ params[i] * params[i] * x3;
curY = Math.pow(1 - params[i], 2.0) * y1
+ 2 * (1.0 - params[i]) * params[i] * y2
+ params[i] * params[i] * y3;
distSquared = Math.pow(curX - x, 2) + Math.pow(curY - y, 2);
debug("distance for param " + params[i] + ": " + Math.sqrt(distSquared));
if (minDistanceSquared >= 0) {
if (distSquared < minDistanceSquared) {
minDistanceSquared = distSquared;
closestParam = params[i];
}
} else {
minDistanceSquared = distSquared;
closestParam = params[i];
}
}
/*
debugStats.clickX = x;
debugStats.clickY = y;
debugStats.closestX = Math.pow(1.0 - closestParam, 2.0) * x1
+ 2.0 * (1.0 - closestParam) * closestParam * x2
+ closestParam * closestParam * x3;
debugStats.closestY = Math.pow(1.0 - closestParam, 2.0) * y1
+ 2.0 * (1.0 - closestParam) * closestParam * y2
+ closestParam * closestParam * y3;
*/
debug("given: "
+ "( " + x + ", " + y + "), "
+ "( " + x1 + ", " + y1 + "), "
+ "( " + x2 + ", " + y2 + "), "
+ "( " + x3 + ", " + y3 + ")");
debug("roots: " + roots);
debug("params: " + params);
debug("closest param: " + closestParam);
return minDistanceSquared;
}
CanvasRenderer.prototype.sqDistanceToFiniteLine = function(x, y, x1, y1, x2, y2) {
var offset = [x - x1, y - y1];
var line = [x2 - x1, y2 - y1];
var lineSq = line[0] * line[0] + line[1] * line[1];
var hypSq = offset[0] * offset[0] + offset[1] * offset[1];
var dotProduct = offset[0] * line[0] + offset[1] * line[1];
var adjSq = dotProduct * dotProduct / lineSq;
if (dotProduct < 0) {
return hypSq;
}
if (adjSq > lineSq) {
return (x - x2) * (x - x2) + (y - y2) * (y - y2);
}
return (hypSq - adjSq)
}
}
}
var debug = function(){};
$$("renderer", "canvas", CanvasRenderer);
})( cytoscape );
;(function($$){
// default layout options
var defaults = {
ready: function(){},
stop: function(){}
};
// constructor
// options : object containing layout options
function NullLayout( options ){
this.options = $$.util.extend(true, {}, defaults, options);
}
// runs the layout
NullLayout.prototype.run = function(){
var options = this.options;
var cy = options.cy; // cy is automatically populated for us in the constructor
// puts all nodes at (0, 0)
cy.nodes().positions(function(){
return {
x: 0,
y: 0
};
});
// trigger layoutready when each node has had its position set at least once
cy.one("layoutready", options.ready);
cy.trigger("layoutready");
// trigger layoutstop when the layout stops (e.g. finishes)
cy.one("layoutstop", options.stop);
cy.trigger("layoutstop");
};
// called on continuous layouts to stop them before they finish
NullLayout.prototype.stop = function(){
var options = this.options;
cy.one("layoutstop", options.stop);
cy.trigger("layoutstop");
};
// register the layout
$$("layout", "null", NullLayout);
})(cytoscape);
;(function($$){
var defaults = {
ready: undefined, // callback on layoutready
stop: undefined, // callback on layoutstop
fit: true, // whether to fit to viewport
padding: 30 // fit padding
};
function RandomLayout( options ){
this.options = $$.util.extend(true, {}, defaults, options);
}
RandomLayout.prototype.run = function(){
var options = this.options;
var cy = options.cy;
var nodes = cy.nodes();
var edges = cy.edges();
var container = cy.container();
var width = container.clientWidth;
var height = container.clientHeight;
nodes.positions(function(i, element){
if( element.locked() ){
return false;
}
return {
x: Math.round( Math.random() * width ),
y: Math.round( Math.random() * height )
};
});
// layoutready should be triggered when the layout has set each node's
// position at least once
cy.one("layoutready", options.ready);
cy.trigger("layoutready");
if( options.fit ){
cy.fit( options.padding );
}
// layoutstop should be triggered when the layout stops running
cy.one("layoutstop", options.stop);
cy.trigger("layoutstop");
};
RandomLayout.prototype.stop = function(){
// stop the layout if it were running continuously
};
// register the layout
$$(
"layout", // we're registering a layout
"random", // the layout name
RandomLayout // the layout prototype
);
})(cytoscape);
;(function($$){
var defaults = {
fit: true, // whether to fit the viewport to the graph
rows: undefined, // force num of rows in the grid
columns: undefined, // force num of cols in the grid
ready: undefined, // callback on layoutready
stop: undefined // callback on layoutstop
};
function GridLayout( options ){
this.options = $$.util.extend({}, defaults, options);
}
GridLayout.prototype.run = function(){
var params = this.options;
var options = params;
var cy = params.cy;
var nodes = cy.nodes();
var edges = cy.edges();
var container = cy.container();
var width = container.clientWidth;
var height = container.clientHeight;
if( height == 0 || width == 0){
nodes.positions(function(){
return { x: 0, y: 0 };
});
} else {
// width/height * splits^2 = cells where splits is number of times to split width
var cells = nodes.size();
var splits = Math.sqrt( cells * height/width );
var rows = Math.round( splits );
var cols = Math.round( width/height * splits );
function small(val){
if( val == undefined ){
return Math.min(rows, cols);
} else {
var min = Math.min(rows, cols);
if( min == rows ){
rows = val;
} else {
cols = val;
}
}
}
function large(val){
if( val == undefined ){
return Math.max(rows, cols);
} else {
var max = Math.max(rows, cols);
if( max == rows ){
rows = val;
} else {
cols = val;
}
}
}
// if rows or columns were set in options, use those values
if( options.rows != null && options.columns != null ){
rows = options.rows;
cols = options.columns;
} else if( options.rows != null && options.columns == null ){
rows = options.rows;
cols = Math.ceil( cells / rows );
} else if( options.rows == null && options.columns != null ){
cols = options.columns;
rows = Math.ceil( cells / cols );
}
// otherwise use the automatic values and adjust accordingly
// if rounding was up, see if we can reduce rows or columns
else if( cols * rows > cells ){
var sm = small();
var lg = large();
// reducing the small side takes away the most cells, so try it first
if( (sm - 1) * lg >= cells ){
small(sm - 1);
} else if( (lg - 1) * sm >= cells ){
large(lg - 1);
}
} else {
// if rounding was too low, add rows or columns
while( cols * rows < cells ){
var sm = small();
var lg = large();
// try to add to larger side first (adds less in multiplication)
if( (lg + 1) * sm >= cells ){
large(lg + 1);
} else {
small(sm + 1);
}
}
}
var cellWidth = width / cols;
var cellHeight = height / rows;
var row = 0;
var col = 0;
nodes.positions(function(i, element){
if( element.locked() ){
return false;
}
var x = col * cellWidth + cellWidth/2;
var y = row * cellHeight + cellHeight/2;
col++;
if( col >= cols ){
col = 0;
row++;
}
return { x: x, y: y };
});
}
if( params.fit ){
cy.reset();
}
cy.one("layoutready", params.ready);
cy.trigger("layoutready");
cy.one("layoutstop", params.stop);
cy.trigger("layoutstop");
};
GridLayout.prototype.stop = function(){
// not a continuous layout
};
$$("layout", "grid", GridLayout);
})( cytoscape );
;(function($$){
var defaults = {
fit: true, // whether to fit to viewport
ready: undefined, // callback on layoutready
stop: undefined, // callback on layoutstop
positions: undefined, // map of (node id) => (position obj)
zoom: undefined, // the zoom level to set (prob want fit = false if set)
pan: undefined, // the pan level to set (prob want fit = false if set)
padding: 30 // padding on fit
};
function PresetLayout( options ){
this.options = $$.util.extend(true, {}, defaults, options);
}
PresetLayout.prototype.run = function(){
var options = this.options;
var cy = options.cy;
var nodes = cy.nodes();
var edges = cy.edges();
var container = cy.container();
function getPosition(node){
if( options.positions == null ){
return null;
}
if( options.positions[node._private.data.id] == null ){
return null;
}
return options.positions[node._private.data.id];
}
nodes.positions(function(i, node){
var position = getPosition(node);
if( node.locked() || position == null ){
return false;
}
return position;
});
if( options.pan != null ){
cy.pan( options.pan );
}
if( options.zoom != null ){
cy.zoom( options.zoom );
}
cy.one("layoutready", options.ready);
cy.trigger("layoutready");
if( options.fit ){
cy.fit( options.padding );
}
cy.one("layoutstop", options.stop);
cy.trigger("layoutstop");
};
$$("layout", "preset", PresetLayout);
$$("core", "presetLayout", function(){
var cy = this;
var layout = {};
var elements = {};
cy.nodes().each(function(i, ele){
elements[ ele.data("id") ] = ele.position();
});
layout.positions = elements;
layout.name = "preset";
layout.zoom = cy.zoom();
layout.pan = cy.pan();
return layout;
});
})(cytoscape);
;(function($$){
var defaults = {
liveUpdate: true, // whether to show the layout as it's running
ready: undefined, // callback on layoutready
stop: undefined, // callback on layoutstop
maxSimulationTime: 4000, // max length in ms to run the layout
fit: true, // reset viewport to fit default simulationBounds
padding: [ 50, 50, 50, 50 ], // top, right, bottom, left
simulationBounds: undefined, // [x1, y1, x2, y2]; [0, 0, width, height] by default
ungrabifyWhileSimulating: true, // so you can't drag nodes during layout
// forces used by arbor (use arbor default on undefined)
repulsion: undefined,
stiffness: undefined,
friction: undefined,
gravity: true,
fps: undefined,
precision: undefined,
// static numbers or functions that dynamically return what these
// values should be for each element
nodeMass: undefined,
edgeLength: undefined,
stepSize: 1, // size of timestep in simulation
// function that returns true if the system is stable to indicate
// that the layout can be stopped
stableEnergy: function( energy ){
var e = energy;
return (e.max <= 0.5) || (e.mean <= 0.3);
}
};
function ArborLayout(options){
this.options = $$.util.extend({}, defaults, options);
}
ArborLayout.prototype.run = function(){
var options = this.options;
var cy = options.cy;
var nodes = cy.nodes();
var edges = cy.edges();
var container = cy.container();
var width = container.clientWidth;
var height = container.clientHeight;
var simulationBounds = options.simulationBounds;
if( options.simulationBounds ){
width = simulationBounds[2] - simulationBounds[0]; // x2 - x1
height = simulationBounds[3] - simulationBounds[1]; // y2 - y1
} else {
options.simulationBounds = [
0,
0,
width,
height
];
}
// make nice x & y fields
var simBB = options.simulationBounds;
simBB.x1 = simBB[0];
simBB.y1 = simBB[1];
simBB.x2 = simBB[2];
simBB.y2 = simBB[3];
// arbor doesn't work with just 1 node
if( cy.nodes().size() <= 1 ){
if( options.fit ){
cy.reset();
}
cy.nodes().position({
x: Math.round( (simBB.x1 + simBB.x2)/2 ),
y: Math.round( (simBB.y1 + simBB.y2)/2 )
});
cy.one("layoutstop", options.stop);
cy.trigger("layoutstop");
cy.one("layoutstop", options.stop);
cy.trigger("layoutstop");
return;
}
var sys = this.system = arbor.ParticleSystem(options.repulsion, options.stiffness, options.friction, options.gravity, options.fps, options.dt, options.precision);
this.system = sys;
if( options.liveUpdate && options.fit ){
cy.reset();
};
var doneTime = 250;
var doneTimeout;
var ready = false;
var lastDraw = +new Date;
var sysRenderer = {
init: function(system){
},
redraw: function(){
var energy = sys.energy();
// if we're stable (according to the client), we're done
if( options.stableEnergy != null && energy != null && energy.n > 0 && options.stableEnergy(energy) ){
sys.stop();
return;
}
clearTimeout(doneTimeout);
doneTimeout = setTimeout(doneHandler, doneTime);
var movedNodes = [];
sys.eachNode(function(n, point){
var id = n.name;
var data = n.data;
var node = data.element;
if( node == null ){
return;
}
var pos = node._private.position;
if( !node.locked() && !node.grabbed() ){
pos.x = simBB.x1 + point.x;
pos.y = simBB.y1 + point.y;
movedNodes.push( node );
}
});
var timeToDraw = (+new Date - lastDraw) >= 16;
if( options.liveUpdate && movedNodes.length > 0 && timeToDraw ){
new $$.Collection(cy, movedNodes).rtrigger("position");
lastDraw = +new Date;
}
if( !ready ){
ready = true;
cy.one("layoutready", options.ready);
cy.trigger("layoutready");
}
}
};
sys.renderer = sysRenderer;
sys.screenSize( width, height );
sys.screenPadding( options.padding[0], options.padding[1], options.padding[2], options.padding[3] );
sys.screenStep( options.stepSize );
function calculateValueForElement(element, value){
if( value == null ){
return undefined;
} else if( typeof value == typeof function(){} ){
return value.apply(element, [element._private.data, {
nodes: nodes.length,
edges: edges.length,
element: element
}]);
} else {
return value;
}
}
// TODO we're using a hack; sys.toScreen should work :(
function fromScreen(pos){
var x = pos.x;
var y = pos.y;
var w = width;
var h = height;
var left = -2;
var right = 2;
var top = -2;
var bottom = 2;
var d = 4;
return {
x: x/w * d + left,
y: y/h * d + right
};
}
var grabHandler = function(e){
grabbed = this;
var pos = sys.fromScreen( this.position() );
var p = arbor.Point(pos.x, pos.y);
this.scratch().arbor.p = p;
switch( e.type ){
case "grab":
this.scratch().arbor.fixed = true;
break;
case "dragstop":
this.scratch().arbor.fixed = false;
this.scratch().arbor.tempMass = 1000
break;
}
};
nodes.bind("grab drag dragstop", grabHandler);
nodes.each(function(i, node){
var id = this._private.data.id;
var mass = calculateValueForElement(this, options.nodeMass);
var locked = this._private.locked;
var pos = fromScreen({
x: node.position().x,
y: node.position().y
});
if( node.locked() ){
return;
}
this.scratch().arbor = sys.addNode(id, {
element: this,
mass: mass,
fixed: locked,
x: locked ? pos.x : undefined,
y: locked ? pos.y : undefined
});
});
edges.each(function(){
var id = this.id();
var src = this.source().id();
var tgt = this.target().id();
var length = calculateValueForElement(this, options.edgeLength);
this.scratch().arbor = sys.addEdge(src, tgt, {
length: length
});
});
function packToCenter(callback){
// TODO implement this for IE :(
if( options.fit ){
cy.fit();
}
callback();
};
var grabbableNodes = nodes.filter(":grabbable");
// disable grabbing if so set
if( options.ungrabifyWhileSimulating ){
grabbableNodes.ungrabify();
}
var doneHandler = function(){
if( window.isIE ){
packToCenter(function(){
done();
});
} else {
done();
}
function done(){
if( !options.liveUpdate ){
if( options.fit ){
cy.reset();
}
cy.nodes().rtrigger("position");
}
// unbind handlers
nodes.unbind("grab drag dragstop", grabHandler);
// enable back grabbing if so set
if( options.ungrabifyWhileSimulating ){
grabbableNodes.grabify();
}
cy.one("layoutstop", options.stop);
cy.trigger("layoutstop");
}
};
sys.start();
setTimeout(function(){
sys.stop();
}, options.maxSimulationTime);
};
ArborLayout.prototype.stop = function(){
if( this.system != null ){
system.stop();
}
};
$$("layout", "arbor", ArborLayout);
})(cytoscape);
;(function($$){
var defaults = {
fit: true, // whether to fit the viewport to the graph
ready: undefined, // callback on layoutready
stop: undefined, // callback on layoutstop
rStepSize: 10, // the step size for increasing the radius if the nodes don't fit on screen
padding: 30, // the padding on fit
startAngle: 3/2 * Math.PI, // the position of the first node
counterclockwise: false // whether the layout should go counterclockwise (true) or clockwise (false)
};
function CircleLayout( options ){
this.options = $$.util.extend({}, defaults, options);
}
CircleLayout.prototype.run = function(){
var params = this.options;
var options = params;
var cy = params.cy;
var nodes = cy.nodes();
var edges = cy.edges();
var container = cy.container();
var width = container.clientWidth;
var height = container.clientHeight;
var center = {
x: width/2,
y: height/2
};
var padding = 50;
var theta = options.startAngle;
var dTheta = 2 * Math.PI / nodes.length;
var maxNodeSize = 0;
for( var i = 0; i < nodes.length; i++ ){
var node = nodes[i];
maxNodeSize = Math.max( node.outerWidth(), node.outerHeight() );
}
var r = width/2 - maxNodeSize;
function distanceBetweenNodes(){
var t1 = 0;
var t2 = dTheta;
var p1 = {
x: center.x + r * Math.cos(t1),
y: center.y + r * Math.sin(t1)
};
var p2 = {
x: center.x + r * Math.cos(t2),
y: center.y + r * Math.sin(t2)
};
var dist = Math.sqrt( (p2.x - p1.x)*(p2.x - p1.x) + (p2.y - p1.y)*(p2.y - p1.y) );
return dist;
}
while( distanceBetweenNodes() < maxNodeSize && !(nodes.length < 2) ){
r += options.rStepSize;
}
var i = 0;
nodes.positions(function(){
var node = this;
var rx = r * Math.cos( theta );
var ry = r * Math.sin( theta );
var pos = {
x: center.x + rx,
y: center.y + ry
};
i++;
theta = options.counterclockwise ? theta - dTheta : theta + dTheta;
return pos;
});
if( params.fit ){
cy.fit( options.padding );
}
cy.one("layoutready", params.ready);
cy.trigger("layoutready");
cy.one("layoutstop", params.stop);
cy.trigger("layoutstop");
};
CircleLayout.prototype.stop = function(){
// not a continuous layout
};
$$("layout", "circle", CircleLayout);
})( cytoscape );
;(function($$){
var defaults = {
fit: true, // whether to fit the viewport to the graph
ready: undefined, // callback on layoutready
stop: undefined, // callback on layoutstop
directed: true, // whether the tree is directed downwards (or edges can point in any direction if false)
padding: 30, // padding on fit
circle: false, // put depths in concentric circles if true, put depths top down if false
roots: undefined, // the roots of the trees
maximalAdjustments: 0 // how many times to try to position the nodes in a maximal way (i.e. no backtracking)
};
function BreadthFirstLayout( options ){
this.options = $$.util.extend({}, defaults, options);
}
BreadthFirstLayout.prototype.run = function(){
var params = this.options;
var options = params;
var cy = params.cy;
var nodes = cy.nodes();
var edges = cy.edges();
var container = cy.container();
var width = container.clientWidth;
var height = container.clientHeight;
var roots;
if( $$.is.elementOrCollection(options.roots) ){
roots = options.roots;
} else if( $$.is.array(options.roots) ){
var rootsArray = [];
for( var i = 0; i < options.roots.length; i++ ){
var id = options.roots[i];
var ele = cy.getElementById( id );
roots.push( ele );
}
roots = new $$.Collection( cy, rootsArray );
} else {
roots = nodes.roots();
}
var depths = [];
var foundByBfs = {};
var id2depth = {};
// find the depths of the nodes
roots.bfs(function(i, depth){
var ele = this[0];
if( !depths[depth] ){
depths[depth] = [];
}
depths[depth].push( ele );
foundByBfs[ ele.id() ] = true;
id2depth[ ele.id() ] = depth;
}, options.directed);
// check for nodes not found by bfs
var orphanNodes = [];
for( var i = 0; i < nodes.length; i++ ){
var ele = nodes[i];
if( foundByBfs[ ele.id() ] ){
continue;
} else {
orphanNodes.push( ele );
}
}
// assign orphan nodes a depth from their neighborhood
var maxChecks = orphanNodes.length * 3;
var checks = 0;
while( orphanNodes.length !== 0 && checks < maxChecks ){
var node = orphanNodes.shift();
var neighbors = node.neighborhood().nodes();
var assignedDepth = false;
for( var i = 0; i < neighbors.length; i++ ){
var depth = id2depth[ neighbors[i].id() ];
if( depth !== undefined ){
depths[depth].push( node );
assignedDepth = true;
break;
}
}
if( !assignedDepth ){
orphanNodes.push( node );
}
checks++;
}
// assign orphan nodes that are still left to the depth of their subgraph
while( orphanNodes.length !== 0 ){
var node = orphanNodes.shift();
var subgraph = node.bfs();
var assignedDepth = false;
for( var i = 0; i < subgraph.length; i++ ){
var depth = id2depth[ subgraph[i].id() ];
if( depth !== undefined ){
depths[depth].push( node );
assignedDepth = true;
break;
}
}
if( !assignedDepth ){ // worst case if the graph really isn't tree friendly, then just dump it in 0
if( depths.length === 0 ){
depths.push([]);
}
depths[0].push( node );
}
}
// assign the nodes a depth and index
function assignDepthsToEles(){
for( var i = 0; i < depths.length; i++ ){
var eles = depths[i];
for( var j = 0; j < eles.length; j++ ){
var ele = eles[j];
ele._private.scratch.BreadthFirstLayout = {
depth: i,
index: j
};
}
}
}
assignDepthsToEles();
// make maximal if so set by adjusting depths
for( var adj = 0; adj < options.maximalAdjustments; adj++ ){
function intersectsDepth( node ){ // returns true if has edges pointing in from a higher depth
var edges = node.connectedEdges('[target = "' + node.id() + '"]');
var thisInfo = node._private.scratch.BreadthFirstLayout;
var highestDepthOfOther = 0;
var highestOther;
for( var i = 0; i < edges.length; i++ ){
var edge = edges[i];
var otherNode = edge.source()[0];
var otherInfo = otherNode._private.scratch.BreadthFirstLayout;
if( thisInfo.depth < otherInfo.depth && highestDepthOfOther < otherInfo.depth ){
highestDepthOfOther = otherInfo.depth;
highestOther = otherNode;
}
}
return highestOther;
}
var nDepths = depths.length;
var elesToMove = [];
for( var i = 0; i < nDepths; i++ ){
var depth = depths[i];
var nDepth = depth.length;
for( var j = 0; j < nDepth; j++ ){
var ele = depth[j];
var info = ele._private.scratch.BreadthFirstLayout;
var intEle = intersectsDepth(ele);
if( intEle ){
info.intEle = intEle;
elesToMove.push( ele );
}
}
}
for( var i = 0; i < elesToMove.length; i++ ){
var ele = elesToMove[i];
var info = ele._private.scratch.BreadthFirstLayout;
var intEle = info.intEle;
var intInfo = intEle._private.scratch.BreadthFirstLayout;
depths[ info.depth ].splice( info.index, 1 ); // remove from old depth & index
// add to end of new depth
var newDepth = intInfo.depth + 1;
while( newDepth > depths.length - 1 ){
depths.push([]);
}
depths[ newDepth ].push( ele );
info.depth = newDepth;
info.index = depths[newDepth].length - 1;
}
assignDepthsToEles();
}
// find min distance we need to leave between nodes
var minDistance = 0;
for( var i = 0; i < nodes.length; i++ ){
var w = nodes[i].outerWidth();
var h = nodes[i].outerHeight();
minDistance = Math.max(minDistance, w, h);
}
minDistance *= 1.75; // just to have some nice spacing
// get the weighted percent for an element based on its connectivity to other levels
var cachedWeightedPercent = {};
function getWeightedPercent( ele ){
if( cachedWeightedPercent[ ele.id() ] ){
return cachedWeightedPercent[ ele.id() ];
}
var eleDepth = ele._private.scratch.BreadthFirstLayout.depth;
var neighbors = ele.neighborhood().nodes();
var percent = 0;
var samples = 0;
for( var i = 0; i < neighbors.length; i++ ){
var neighbor = neighbors[i];
var nEdges = neighbor.edgesWith( ele );
var index = neighbor._private.scratch.BreadthFirstLayout.index;
var depth = neighbor._private.scratch.BreadthFirstLayout.depth;
var nDepth = depths[depth].length;
if( eleDepth > depth || eleDepth === 0 ){ // only get influenced by elements above
percent += index / nDepth;
samples++;
}
}
samples = Math.max(1, samples);
percent = percent / samples;
if( samples === 0 ){ // so lone nodes have a "don't care" state in sorting
percent = undefined;
}
cachedWeightedPercent[ ele.id() ] = percent;
return percent;
}
// rearrange the indices in each depth level based on connectivity
for( var times = 0; times < 3; times++ ){ // do it a few times b/c the depths are dynamic and we want a more stable result
for( var i = 0; i < depths.length; i++ ){
var depth = i;
var newDepths = [];
depths[i] = depths[i].sort(function(a, b){
var apct = getWeightedPercent( a );
var bpct = getWeightedPercent( b );
return apct - bpct;
});
}
assignDepthsToEles(); // and update
}
var center = {
x: width/2,
y: height/2
};
nodes.positions(function(){
var ele = this[0];
var info = ele._private.scratch.BreadthFirstLayout;
var depth = info.depth;
var index = info.index;
var distanceX = Math.max( width / (depths[depth].length + 1), minDistance );
var distanceY = Math.max( height / (depths.length + 1), minDistance );
var radiusStepSize = Math.min( width / 2 / depths.length, height / 2 / depths.length );
radiusStepSize = Math.max( radiusStepSize, minDistance );
if( options.circle ){
var radius = radiusStepSize * depth + radiusStepSize - (depths.length > 0 && depths[0].length <= 3 ? radiusStepSize/2 : 0);
var theta = 2 * Math.PI / depths[depth].length * index;
if( depth === 0 && depths[0].length === 1 ){
radius = 1;
}
return {
x: center.x + radius * Math.cos(theta),
y: center.y + radius * Math.sin(theta)
};
} else {
return {
x: (index + 1) * distanceX,
y: (depth + 1) * distanceY
};
}
});
if( params.fit ){
cy.fit( options.padding );
}
cy.one("layoutready", params.ready);
cy.trigger("layoutready");
cy.one("layoutstop", params.stop);
cy.trigger("layoutstop");
};
BreadthFirstLayout.prototype.stop = function(){
// not a continuous layout
};
$$("layout", "breadthfirst", BreadthFirstLayout);
})( cytoscape );
;(function($$) {
/**
* @brief : default layout options
*/
var defaults = {
ready : function() {},
stop : function() {},
// Number of iterations between consecutive screen positions update (0 -> only updated on the end)
refresh : 0,
// Whether to fit the network view after when done
fit : true,
// Whether to randomize node positions on the beginning
randomize : true,
// Whether to use the JS console to print debug messages
debug : false,
// Node repulsion (non overlapping) multiplier
nodeRepulsion : 10000,
// Node repulsion (overlapping) multiplier
nodeOverlap : 10,
// Ideal edge (non nested) length
idealEdgeLength : 10,
// Divisor to compute edge forces
edgeElasticity : 100,
// Nesting factor (multiplier) to compute ideal edge length for nested edges
nestingFactor : 5,
// Gravity force (constant)
gravity : 250,
// Maximum number of iterations to perform
numIter : 100,
// Initial temperature (maximum node displacement)
initialTemp : 200,
// Cooling factor (how the temperature is reduced between consecutive iterations
coolingFactor : 0.95,
// Lower temperature threshold (below this point the layout will end)
minTemp : 1
};
/**
* @brief : constructor
* @arg options : object containing layout options
*/
function CoseLayout(options) {
this.options = $$.util.extend(true, {}, defaults, options);
}
/**
* @brief : runs the layout
*/
CoseLayout.prototype.run = function() {
var options = this.options;
var cy = options.cy;
// Set DEBUG - Global variable
if (true == options.debug) {
DEBUG = true;
} else {
DEBUG = false;
}
// Get start time
var startTime = new Date();
// Initialize layout info
var layoutInfo = createLayoutInfo(cy, options);
// Show LayoutInfo contents if debugging
if (DEBUG) {
printLayoutInfo(layoutInfo);
}
// If required, randomize node positions
if (true == options.randomize) {
randomizePositions(layoutInfo, cy);
if (0 < options.refresh) {
refreshPositions(layoutInfo, cy, options);
}
}
// Main loop
for (var i = 0; i < options.numIter; i++) {
// Do one step in the phisical simulation
step(layoutInfo, cy, options, i);
// If required, update positions
if (0 < options.refresh && 0 == (i % options.refresh)) {
refreshPositions(layoutInfo, cy, options);
}
// Update temperature
layoutInfo.temperature = layoutInfo.temperature * options.coolingFactor;
logDebug("New temperature: " + layoutInfo.temperature);
if (layoutInfo.temperature < options.minTemp) {
logDebug("Temperature drop below minimum threshold. Stopping computation in step " + i);
break;
}
}
refreshPositions(layoutInfo, cy, options);
// Fit the graph if necessary
if (true == options.fit) {
cy.fit();
}
// Get end time
var endTime = new Date();
console.info("Layout took " + (endTime - startTime) + " ms");
// Layout has finished
cy.one("layoutstop", options.stop);
cy.trigger("layoutstop");
};
/**
* @brief : called on continuous layouts to stop them before they finish
*/
CoseLayout.prototype.stop = function(){
var options = this.options;
cy.one("layoutstop", options.stop);
cy.trigger("layoutstop");
};
/**
* @brief : Creates an object which is contains all the data
* used in the layout process
* @arg cy : cytoscape.js object
* @return : layoutInfo object initialized
*/
function createLayoutInfo(cy, options) {
var layoutInfo = {
layoutNodes : [],
idToIndex : {},
nodeSize : cy.nodes().size(),
graphSet : [],
indexToGraph : [],
layoutEdges : [],
edgeSize : cy.edges().size(),
temperature : options.initialTemp
};
// Shortcut
var nodes = cy.nodes();
// Iterate over all nodes, creating layout nodes
for (var i = 0; i < layoutInfo.nodeSize; i++) {
var tempNode = {};
tempNode.id = nodes[i].data('id');
tempNode.parentId = nodes[i].data('parent');
tempNode.children = [];
tempNode.positionX = nodes[i].position('x');
tempNode.positionY = nodes[i].position('y');
tempNode.offsetX = 0;
tempNode.offsetY = 0;
tempNode.height = nodes[i].height();
tempNode.width = nodes[i].width();
tempNode.maxX = tempNode.positionX + tempNode.width / 2;
tempNode.minX = tempNode.positionX - tempNode.width / 2;
tempNode.maxY = tempNode.positionY + tempNode.height / 2;
tempNode.minY = tempNode.positionY - tempNode.height / 2;
tempNode.padLeft = nodes[i]._private.style['padding-left'].pxValue;
tempNode.padRight = nodes[i]._private.style['padding-right'].pxValue;
tempNode.padTop = nodes[i]._private.style['padding-top'].pxValue;
tempNode.padBottom = nodes[i]._private.style['padding-bottom'].pxValue;
// Add new node
layoutInfo.layoutNodes.push(tempNode);
// Add entry to id-index map
layoutInfo.idToIndex[tempNode.id] = i;
}
// Inline implementation of a queue, used for traversing the graph in BFS order
var queue = [];
var start = 0; // Points to the start the queue
var end = -1; // Points to the end of the queue
var tempGraph = [];
// Second pass to add child information and
// initialize queue for hierarchical traversal
for (var i = 0; i < layoutInfo.nodeSize; i++) {
var n = layoutInfo.layoutNodes[i];
var p_id = n.parentId;
// Check if node n has a parent node
if (undefined != p_id) {
// Add node Id to parent's list of children
layoutInfo.layoutNodes[layoutInfo.idToIndex[p_id]].children.push(n.id);
} else {
// If a node doesn't have a parent, then it's in the root graph
queue[++end] = n.id;
tempGraph.push(n.id);
}
}
// Add root graph to graphSet
layoutInfo.graphSet.push(tempGraph);
// Traverse the graph, level by level,
while (start <= end) {
// Get the node to visit and remove it from queue
var node_id = queue[start++];
var node_ix = layoutInfo.idToIndex[node_id];
var node = layoutInfo.layoutNodes[node_ix];
var children = node.children;
if (children.length > 0) {
// Add children nodes as a new graph to graph set
layoutInfo.graphSet.push(children);
// Add children to que queue to be visited
for (var i = 0; i < children.length; i++) {
queue[++end] = children[i];
}
}
}
// Create indexToGraph map
for (var i = 0; i < layoutInfo.graphSet.length; i++) {
var graph = layoutInfo.graphSet[i];
for (var j = 0; j < graph.length; j++) {
var index = layoutInfo.idToIndex[graph[j]];
layoutInfo.indexToGraph[index] = i;
}
}
// Shortcut
var edges = cy.edges();
// Iterate over all edges, creating Layout Edges
for (var i = 0; i < layoutInfo.edgeSize; i++) {
var e = edges[i];
var tempEdge = {};
tempEdge.id = e.data('id');
tempEdge.sourceId = e.data('source');
tempEdge.targetId = e.data('target');
// Compute ideal length
var idealLength = options.idealEdgeLength;
// Check if it's an inter graph edge
var sourceIx = layoutInfo.idToIndex[tempEdge.sourceId];
var targetIx = layoutInfo.idToIndex[tempEdge.targetId];
var sourceGraph = layoutInfo.indexToGraph[sourceIx];
var targetGraph = layoutInfo.indexToGraph[targetIx];
if (sourceGraph != targetGraph) {
// Find lowest common graph ancestor
var lca = findLCA(tempEdge.sourceId, tempEdge.targetId, layoutInfo);
// Compute sum of node depths, relative to lca graph
var lcaGraph = layoutInfo.graphSet[lca];
var depth = 0;
// Source depth
var tempNode = layoutInfo.layoutNodes[sourceIx];
while (-1 == $.inArray(tempNode.id, lcaGraph)) {
tempNode = layoutInfo.layoutNodes[layoutInfo.idToIndex[tempNode.parentId]];
depth++;
}
// Target depth
tempNode = layoutInfo.layoutNodes[targetIx];
while (-1 == $.inArray(tempNode.id, lcaGraph)) {
tempNode = layoutInfo.layoutNodes[layoutInfo.idToIndex[tempNode.parentId]];
depth++;
}
logDebug("LCA of nodes " + tempEdge.sourceId + " and " + tempEdge.targetId +
". Index: " + lca + " Contents: " + lcaGraph.toString() +
". Depth: " + depth);
// Update idealLength
idealLength *= depth * options.nestingFactor;
}
tempEdge.idealLength = idealLength;
layoutInfo.layoutEdges.push(tempEdge);
}
// Finally, return layoutInfo object
return layoutInfo;
}
/**
* @brief : This function finds the index of the lowest common
* graph ancestor between 2 nodes in the subtree
* (from the graph hierarchy induced tree) whose
* root is graphIx
*
* @arg node1: node1's ID
* @arg node2: node2's ID
* @arg layoutInfo: layoutInfo object
*
*/
function findLCA(node1, node2, layoutInfo) {
// Find their common ancester, starting from the root graph
var res = findLCA_aux(node1, node2, 0, layoutInfo);
if (2 > res.count) {
// If aux function couldn't find the common ancester,
// then it is the root graph
return 0;
} else {
return res.graph;
}
}
/**
* @brief : Auxiliary function used for LCA computation
*
* @arg node1 : node1's ID
* @arg node2 : node2's ID
* @arg graphIx : subgraph index
* @arg layoutInfo : layoutInfo object
*
* @return : object of the form {count: X, graph: Y}, where:
* X is the number of ancesters (max: 2) found in
* graphIx (and it's subgraphs),
* Y is the graph index of the lowest graph containing
* all X nodes
*/
function findLCA_aux(node1, node2, graphIx, layoutInfo) {
var graph = layoutInfo.graphSet[graphIx];
// If both nodes belongs to graphIx
if (-1 < $.inArray(node1, graph) && -1 < $.inArray(node2, graph)) {
return {count:2, graph:graphIx};
}
// Make recursive calls for all subgraphs
var c = 0;
for (var i = 0; i < graph.length; i++) {
var nodeId = graph[i];
var nodeIx = layoutInfo.idToIndex[nodeId];
var children = layoutInfo.layoutNodes[nodeIx].children;
// If the node has no child, skip it
if (0 == children.length) {
continue;
}
var childGraphIx = layoutInfo.indexToGraph[layoutInfo.idToIndex[children[0]]];
var result = findLCA_aux(node1, node2, childGraphIx, layoutInfo);
if (0 == result.count) {
// Neither node1 nor node2 are present in this subgraph
continue;
} else if (1 == result.count) {
// One of (node1, node2) is present in this subgraph
c++;
if (2 == c) {
// We've already found both nodes, no need to keep searching
break;
}
} else {
// Both nodes are present in this subgraph
return result;
}
}
return {count:c, graph:graphIx};
}
/**
* @brief: printsLayoutInfo into js console
* Only used for debbuging
*/
function printLayoutInfo(layoutInfo) {
if (!DEBUG) {
return;
}
console.debug("layoutNodes:");
for (var i = 0; i < layoutInfo.nodeSize; i++) {
var n = layoutInfo.layoutNodes[i];
var s =
"\nindex: " + i +
"\nId: " + n.id +
"\nChildren: " + n.children.toString() +
"\nparentId: " + n.parentId +
"\npositionX: " + n.positionX +
"\npositionY: " + n.positionY +
"\nOffsetX: " + n.offsetX +
"\nOffsetY: " + n.offsetY +
"\npadLeft: " + n.padLeft +
"\npadRight: " + n.padRight +
"\npadTop: " + n.padTop +
"\npadBottom: " + n.padBottom;
console.debug(s);
}
console.debug("idToIndex");
for (var i in layoutInfo.idToIndex) {
console.debug("Id: " + i + "\nIndex: " + layoutInfo.idToIndex[i]);
}
console.debug("Graph Set");
var set = layoutInfo.graphSet;
for (var i = 0; i < set.length; i ++) {
console.debug("Set : " + i + ": " + set[i].toString());
}
var s = "IndexToGraph";
for (var i = 0; i < layoutInfo.indexToGraph.length; i ++) {
s += "\nIndex : " + i + " Graph: "+ layoutInfo.indexToGraph[i];
}
console.debug(s);
s = "Layout Edges";
for (var i = 0; i < layoutInfo.layoutEdges.length; i++) {
var e = layoutInfo.layoutEdges[i];
s += "\nEdge Index: " + i + " ID: " + e.id +
" SouceID: " + e.sourceId + " TargetId: " + e.targetId +
" Ideal Length: " + e.idealLength;
}
console.debug(s);
s = "nodeSize: " + layoutInfo.nodeSize;
s += "\nedgeSize: " + layoutInfo.edgeSize;
s += "\ntemperature: " + layoutInfo.temperature;
console.debug(s);
return;
}
/**
* @brief : Randomizes the position of all nodes
*/
function randomizePositions(layoutInfo, cy) {
var container = cy.container();
var width = container.clientWidth;
var height = container.clientHeight;
for (var i = 0; i < layoutInfo.nodeSize; i++) {
var n = layoutInfo.layoutNodes[i];
// No need to randomize compound nodes
if (0 == n.children.length) {
n.positionX = Math.random() * width;
n.positionY = Math.random() * height;
}
}
}
/**
* @brief : Updates the positions of nodes in the network
* @arg layoutInfo : LayoutInfo object
* @arg cy : Cytoscape object
* @arg options : Layout options
*/
function refreshPositions(layoutInfo, cy, options) {
var container = cy.container();
var width = container.clientWidth;
var height = container.clientHeight;
var s = "Refreshing positions";
logDebug(s);
cy.nodes().positions(function(i, ele) {
lnode = layoutInfo.layoutNodes[layoutInfo.idToIndex[ele.data('id')]];
s = "Node: " + lnode.id + ". Refreshed position: (" +
lnode.positionX + ", " + lnode.positionY + ").";
logDebug(s);
return {
x: lnode.positionX,
y: lnode.positionY
};
});
// Trigger layoutReady only on first call
if (true != refreshPositions.ready) {
s = "Triggering layoutready";
logDebug(s);
refreshPositions.ready = true;
cy.one("layoutready", options.ready);
cy.trigger("layoutready");
}
}
/**
* @brief : Performs one iteration of the physical simulation
* @arg layoutInfo : LayoutInfo object already initialized
* @arg cy : Cytoscape object
* @arg options : Layout options
*/
function step(layoutInfo, cy, options, step) {
var s = "\n\n###############################";
s += "\nSTEP: " + step;
s += "\n###############################\n";
logDebug(s);
// Calculate node repulsions
calculateNodeForces(layoutInfo, cy, options);
// Calculate edge forces
calculateEdgeForces(layoutInfo, cy, options);
// Calculate gravity forces
calculateGravityForces(layoutInfo, cy, options);
// Propagate forces from parent to child
propagateForces(layoutInfo, cy, options);
// Update positions based on calculated forces
updatePositions(layoutInfo, cy, options);
}
/**
* @brief : Computes the node repulsion forces
*/
function calculateNodeForces(layoutInfo, cy, options) {
// Go through each of the graphs in graphSet
// Nodes only repel each other if they belong to the same graph
var s = "calculateNodeForces";
logDebug(s);
for (var i = 0; i < layoutInfo.graphSet.length; i ++) {
var graph = layoutInfo.graphSet[i];
var numNodes = graph.length;
s = "Set: " + graph.toString();
logDebug(s);
// Now get all the pairs of nodes
// Only get each pair once, (A, B) = (B, A)
for (var j = 0; j < numNodes; j++) {
var node1 = layoutInfo.layoutNodes[layoutInfo.idToIndex[graph[j]]];
for (var k = j + 1; k < numNodes; k++) {
var node2 = layoutInfo.layoutNodes[layoutInfo.idToIndex[graph[k]]];
nodeRepulsion(node1, node2, layoutInfo, cy, options);
}
}
}
}
/**
* @brief : Compute the node repulsion forces between a pair of nodes
*/
function nodeRepulsion(node1, node2, layoutInfo, cy, options) {
var s = "Node repulsion. Node1: " + node1.id + " Node2: " + node2.id;
// Get direction of line connecting both node centers
var directionX = node2.positionX - node1.positionX;
var directionY = node2.positionY - node1.positionY;
s += "\ndirectionX: " + directionX + ", directionY: " + directionY;
// If both centers are the same, apply a random force
if (0 == directionX && 0 == directionY) {
s += "\nNodes have the same position.";
return; // TODO
}
overlap = nodesOverlap(node1, node2, directionX, directionY);
if (overlap > 0) {
s += "\nNodes DO overlap.";
s += "\nOverlap: " + overlap;
// If nodes overlap, repulsion force is proportional
// to the overlap
var force = options.nodeOverlap * overlap;
// Compute the module and components of the force vector
var distance = Math.sqrt(directionX * directionX + directionY * directionY);
s += "\nDistance: " + distance;
var forceX = force * directionX / distance;
var forceY = force * directionY / distance;
} else {
s += "\nNodes do NOT overlap.";
// If there's no overlap, force is inversely proportional
// to squared distance
// Get clipping points for both nodes
var point1 = findClippingPoint(node1, directionX, directionY);
var point2 = findClippingPoint(node2, -1 * directionX, -1 * directionY);
// Use clipping points to compute distance
var distanceX = point2.x - point1.x;
var distanceY = point2.y - point1.y;
var distanceSqr = distanceX * distanceX + distanceY * distanceY;
var distance = Math.sqrt(distanceSqr);
s += "\nDistance: " + distance;
// Compute the module and components of the force vector
var force = options.nodeRepulsion / distanceSqr;
var forceX = force * distanceX / distance;
var forceY = force * distanceY / distance;
}
// Apply force
node1.offsetX -= forceX;
node1.offsetY -= forceY;
node2.offsetX += forceX;
node2.offsetY += forceY;
s += "\nForceX: " + forceX + " ForceY: " + forceY;
logDebug(s);
return;
}
/**
* @brief : Finds the point in which an edge (direction dX, dY) intersects
* the rectangular bounding box of it's source/target node
*/
function findClippingPoint(node, dX, dY) {
// Shorcuts
var X = node.positionX;
var Y = node.positionY;
var H = node.height;
var W = node.width;
var dirSlope = dY / dX;
var nodeSlope = H / W;
var nodeinvSlope = W / H;
var s = "Computing clipping point of node " + node.id +
" . Height: " + H + ", Width: " + W +
"\nDirection " + dX + ", " + dY;
// Compute intersection
var res = {};
do {
// Case: Vertical direction (up)
if (0 == dX && 0 < dY) {
res.x = X;
s += "\nUp direction";
res.y = Y + H / 2;
break;
}
// Case: Vertical direction (down)
if (0 == dX && 0 > dY) {
res.x = X;
res.y = Y + H / 2;
s += "\nDown direction";
break;
}
// Case: Intersects the right border
if (0 < dX &&
-1 * nodeSlope <= dirSlope &&
dirSlope <= nodeSlope) {
res.x = X + W / 2;
res.y = Y + (W * dY / 2 / dX);
s += "\nRightborder";
break;
}
// Case: Intersects the left border
if (0 > dX &&
-1 * nodeSlope <= dirSlope &&
dirSlope <= nodeSlope) {
res.x = X - W / 2;
res.y = Y - (W * dY / 2 / dX);
s += "\nLeftborder";
break;
}
// Case: Intersects the top border
if (0 < dY &&
( dirSlope <= -1 * nodeSlope ||
dirSlope >= nodeSlope )) {
res.x = X + (H * dX / 2 / dY);
res.y = Y + H / 2;
s += "\nTop border";
break;
}
// Case: Intersects the bottom border
if (0 > dY &&
( dirSlope <= -1 * nodeSlope ||
dirSlope >= nodeSlope )) {
res.x = X - (H * dX / 2 / dY);
res.y = Y - H / 2;
s += "\nBottom border";
break;
}
} while (false);
s += "\nClipping point found at " + res.x + ", " + res.y;
logDebug(s);
return res;
}
/**
* @brief : Determines whether two nodes overlap or not
* @return : Amount of overlapping (0 => no overlap)
*/
function nodesOverlap(node1, node2, dX, dY) {
if (dX > 0) {
var overlapX = node1.maxX - node2.minX;
} else {
var overlapX = node2.maxX - node1.minX;
}
if (dY > 0) {
var overlapY = node1.maxY - node2.minY;
} else {
var overlapY = node2.maxY - node1.minY;
}
if (overlapX >= 0 && overlapY >= 0) {
return Math.sqrt(overlapX * overlapX + overlapY * overlapY);
} else {
return 0;
}
}
/**
* @brief : Calculates all edge forces
*/
function calculateEdgeForces(layoutInfo, cy, options) {
// Iterate over all edges
for (var i = 0; i < layoutInfo.edgeSize; i++) {
// Get edge, source & target nodes
var edge = layoutInfo.layoutEdges[i];
var sourceIx = layoutInfo.idToIndex[edge.sourceId];
var source = layoutInfo.layoutNodes[sourceIx];
var targetIx = layoutInfo.idToIndex[edge.targetId];
var target = layoutInfo.layoutNodes[targetIx];
// Get direction of line connecting both node centers
var directionX = target.positionX - source.positionX;
var directionY = target.positionY - source.positionY;
// If both centers are the same, do nothing.
// A random force has already been applied as node repulsion
if (0 == directionX && 0 == directionY) {
return;
}
// Get clipping points for both nodes
var point1 = findClippingPoint(source, directionX, directionY);
var point2 = findClippingPoint(target, -1 * directionX, -1 * directionY);
var lx = point2.x - point1.x;
var ly = point2.y - point1.y;
var l = Math.sqrt(lx * lx + ly * ly);
var force = Math.pow(edge.idealLength - l, 2) / options.edgeElasticity;
if (0 != l) {
var forceX = force * lx / l;
var forceY = force * ly / l;
} else {
var forceX = 0;
var forceY = 0;
}
// Add this force to target and source nodes
source.offsetX += forceX;
source.offsetY += forceY;
target.offsetX -= forceX;
target.offsetY -= forceY;
var s = "Edge force between nodes " + source.id + " and " + target.id;
s += "\nDistance: " + l + " Force: (" + forceX + ", " + forceY + ")";
logDebug(s);
}
}
/**
* @brief : Computes gravity forces for all nodes
*/
function calculateGravityForces(layoutInfo, cy, options) {
var s = "calculateGravityForces";
logDebug(s);
for (var i = 0; i < layoutInfo.graphSet.length; i ++) {
var graph = layoutInfo.graphSet[i];
var numNodes = graph.length;
s = "Set: " + graph.toString();
logDebug(s);
// Compute graph center
if (0 == i) {
var container = cy.container();
var centerX = container.clientHeight / 2;
var centerY = container.clientWidth / 2;
} else {
// Get Parent node for this graph, and use its position as center
var temp = layoutInfo.layoutNodes[layoutInfo.idToIndex[graph[0]]];
var parent = layoutInfo.layoutNodes[layoutInfo.idToIndex[temp.parentId]];
var centerX = parent.positionX;
var centerY = parent.positionY;
}
s = "Center found at: " + centerX + ", " + centerY;
logDebug(s);
// Apply force to all nodes in graph
for (var j = 0; j < numNodes; j++) {
var node = layoutInfo.layoutNodes[layoutInfo.idToIndex[graph[j]]];
s = "Node: " + node.id;
var dx = centerX - node.positionX;
var dy = centerY - node.positionY;
var d = Math.sqrt(dx * dx + dy * dy);
if (d > 1.0) { // TODO: Use global variable for distance threshold
var fx = options.gravity * dx / d;
var fy = options.gravity * dy / d;
node.offsetX += fx;
node.offsetY += fy;
s += ": Applied force: " + fx + ", " + fy;
} else {
s += ": skypped since it's too close to center";
}
logDebug(s);
}
}
}
/**
* @brief : This function propagates the existing offsets from
* parent nodes to its descendents.
* @arg layoutInfo : layoutInfo Object
* @arg cy : cytoscape Object
* @arg options : Layout options
*/
function propagateForces(layoutInfo, cy, options) {
// Inline implementation of a queue, used for traversing the graph in BFS order
var queue = [];
var start = 0; // Points to the start the queue
var end = -1; // Points to the end of the queue
logDebug("propagateForces");
// Start by visiting the nodes in the root graph
queue.push.apply(queue, layoutInfo.graphSet[0]);
end += layoutInfo.graphSet[0].length;
// Traverse the graph, level by level,
while (start <= end) {
// Get the node to visit and remove it from queue
var nodeId = queue[start++];
var nodeIndex = layoutInfo.idToIndex[nodeId];
var node = layoutInfo.layoutNodes[nodeIndex];
var children = node.children;
// We only need to process the node if it's compound
if (0 < children.length) {
var offX = node.offsetX;
var offY = node.offsetY;
var s = "Propagating offset from parent node : " + node.id +
". OffsetX: " + offX + ". OffsetY: " + offY;
s += "\n Children: " + children.toString();
logDebug(s);
for (var i = 0; i < children.length; i++) {
var childNode = layoutInfo.layoutNodes[layoutInfo.idToIndex[children[i]]];
// Propagate offset
childNode.offsetX += offX;
childNode.offsetY += offY;
// Add children to queue to be visited
queue[++end] = children[i];
}
// Reset parent offsets
node.offsetX = 0;
node.offsetY = 0;
}
}
}
/**
* @brief : Updates the layout model positions, based on
* the accumulated forces
*/
function updatePositions(layoutInfo, cy, options) {
var s = "Updating positions";
logDebug(s);
// Reset boundaries for compound nodes
for (var i = 0; i < layoutInfo.nodeSize; i++) {
var n = layoutInfo.layoutNodes[i];
if (0 < n.children.length) {
logDebug("Resetting boundaries of compound node: " + n.id);
n.maxX = undefined;
n.minX = undefined;
n.maxY = undefined;
n.minY = undefined;
}
}
for (var i = 0; i < layoutInfo.nodeSize; i++) {
var n = layoutInfo.layoutNodes[i];
if (0 < n.children.length) {
// No need to set compound node position
logDebug("Skipping position update of node: " + n.id);
continue;
}
s = "Node: " + n.id + " Previous position: (" +
n.positionX + ", " + n.positionY + ").";
// Limit displacement in order to improve stability
var tempForce = limitForce(n.offsetX, n.offsetY, layoutInfo.temperature);
n.positionX += tempForce.x;
n.positionY += tempForce.y;
n.offsetX = 0;
n.offsetY = 0;
n.minX = n.positionX - n.width;
n.maxX = n.positionX + n.width;
n.minY = n.positionY - n.height;
n.maxY = n.positionY + n.height;
s += " New Position: (" + n.positionX + ", " + n.positionY + ").";
logDebug(s);
// Update ancestry boudaries
updateAncestryBoundaries(n, layoutInfo);
}
// Update size, position of compund nodes
for (var i = 0; i < layoutInfo.nodeSize; i++) {
var n = layoutInfo.layoutNodes[i];
if (0 < n.children.length) {
n.positionX = (n.maxX + n.minX) / 2;
n.positionY = (n.maxY + n.minY) / 2;
n.width = n.maxX - n.minX;
n.height = n.maxY - n.minY;
s = "Updating position, size of compound node " + n.id;
s += "\nPositionX: " + n.positionX + ", PositionY: " + n.positionY;
s += "\nWidth: " + n.width + ", Height: " + n.height;
logDebug(s);
}
}
}
/**
* @brief : Limits a force (forceX, forceY) to be not
* greater (in modulo) than max.
8 Preserves force direction.
*/
function limitForce(forceX, forceY, max) {
var s = "Limiting force: (" + forceX + ", " + forceY + "). Max: " + max;
var force = Math.sqrt(forceX * forceX + forceY * forceY);
if (force > max) {
var res = {
x : max * forceX / force,
y : max * forceY / force
};
} else {
var res = {
x : forceX,
y : forceY
};
}
s += ".\nResult: (" + res.x + ", " + res.y + ")";
logDebug(s);
return res;
}
/**
* @brief : Function used for keeping track of compound node
* sizes, since they should bound all their subnodes.
*/
function updateAncestryBoundaries(node, layoutInfo) {
var s = "Propagating new position/size of node " + node.id;
var parentId = node.parentId;
if (undefined == parentId) {
// If there's no parent, we are done
s += ". No parent node.";
logDebug(s);
return;
}
// Get Parent Node
var p = layoutInfo.layoutNodes[layoutInfo.idToIndex[parentId]];
var flag = false;
// MaxX
if (undefined == p.maxX || node.maxX + p.padRight > p.maxX) {
p.maxX = node.maxX + p.padRight;
flag = true;
s += "\nNew maxX for parent node " + p.id + ": " + p.maxX;
}
// MinX
if (undefined == p.minX || node.minX - p.padLeft < p.minX) {
p.minX = node.minX - p.padLeft;
flag = true;
s += "\nNew minX for parent node " + p.id + ": " + p.minX;
}
// MaxY
if (undefined == p.maxY || node.maxY + p.padBottom > p.maxY) {
p.maxY = node.maxY + p.padBottom;
flag = true;
s += "\nNew maxY for parent node " + p.id + ": " + p.maxY;
}
// MinY
if (undefined == p.minY || node.minY - p.padTop < p.minY) {
p.minY = node.minY - p.padTop;
flag = true;
s += "\nNew minY for parent node " + p.id + ": " + p.minY;
}
// If updated boundaries, propagate changes upward
if (flag) {
logDebug(s);
return updateAncestryBoundaries(p, layoutInfo);
}
s += ". No changes in boundaries/position of parent node " + p.id;
logDebug(s);
return;
}
/**
* @brief : Logs a debug message in JS console, if DEBUG is ON
*/
function logDebug(text) {
if (DEBUG) {
console.debug(text);
}
}
// register the layout
$$("layout", "cose", CoseLayout);
})(cytoscape);