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Copy pathjquery.cytoscapeweb.renderer.svg.js
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jquery.cytoscapeweb.renderer.svg.js
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(function($){
$.fn.svgattr = function(attrName, val){
var container = $(this).parents("svg:first").parent();
var svg = container.svg('get');
if( val !== undefined ){
// set
var obj = {};
obj[attrName] = val;
svg.change( $(this)[0], obj );
}
};
})(jQuery);
$(function(){
// TODO add more styles
var defaults = {
nodes: {
fillColor: "#888",
fillOpacity: 1,
borderColor: "#666",
borderOpacity: 1,
borderWidth: 0,
borderStyle: "solid",
opacity: 1,
size: 10,
shape: "ellipse",
cursor: "pointer",
visibility: "visible",
labelValign: "middle",
labelHalign: "middle",
labelText: "",
labelFillColor: "#000",
labelOutlineColor: "#666",
labelOutlineWidth: 0,
labelFontSize: "inherit",
labelFontStyle: "normal",
labelFontDecoration: "none",
labelFontVariant: "italic",
labelFontFamily: "Arial",
labelFontWeight: "bold",
labelOpacity: 1,
labelOutlineOpacity: 1,
labelFillOpacity: 1,
selected: {
fillColor: "#222",
borderColor: "#000"
}
},
edges: {
color: "#ccc",
opacity: 1,
width: 1,
style: "solid",
cursor: "pointer",
visibility: "visible",
targetArrowShape: "triangle",
selected: {
color: "#666"
}
},
global: {
panCursor: "grabbing",
selectionFillColor: "#ccc",
selectionOpacity: 0.5,
selectionBorderColor: "#888",
selectionBorderWidth: 1
}
};
var lineStyles = {};
var registerLineStyle = SvgRenderer.prototype.registerLineStyle = function(style){
lineStyles[ style.name.toLowerCase() ] = style;
style.name = style.name.toLowerCase();
$.cytoscapeweb("debug", "SVG renderer registered line style with name `%s` and definition %o", style.name, style);
};
registerLineStyle({
name: "solid",
array: undefined
});
registerLineStyle({
name: "dot",
array: [1, 5]
});
registerLineStyle({
name: "longdash",
array: [10, 2]
});
registerLineStyle({
name: "dash",
array: [5, 5]
});
var arrowShapes = {};
var registerArrowShape = SvgRenderer.prototype.registerArrowShape = function(shape){
arrowShapes[ shape.name.toLowerCase() ] = shape;
shape.name = shape.name.toLowerCase();
$.cytoscapeweb("debug", "SVG renderer registered edge arrow shape with name `%s` and definition %o", shape.name, shape);
};
// use this as an example for adding more node shapes
registerArrowShape({
// name of the shape
name: "triangle",
// generate the shape svg
svg: function(svg, parent, edge, nodeInterP, controlPoint, style){
console.log(svg, parent, edge, nodeInterP, controlPoint, style);
var lineWidth = edge._private.style.width;
var arrowWidth = 5;
var width = Math.max(arrowWidth, arrowWidth * Math.sqrt(lineWidth));
width = Math.max(width, 1.5 * lineWidth);
var height = 2 * width;
var orth1 = geometry.getOrthogonalPoint(nodeInterP, controlPoint, width/2, height);
var orth2 = geometry.getOrthogonalPoint(nodeInterP, controlPoint, -width/2, height);
var pointByNode = controlPoint;
var leftPoint = [orth1.x, orth1.y];
var rightPoint = [orth2.x, orth2.y];
return svg.polygon(edge._private.svgGroup, [ pointByNode, leftPoint, rightPoint ]);
},
// update unique style attributes for this shape
// see http://keith-wood.name/svgRef.html for api reference
update: function(svg, parent, node, position, style){
// TODO
},
// 2D shape in intersection lib
intersectionShape: Polygon
});
var nodeShapes = {};
var registerNodeShape = SvgRenderer.prototype.registerNodeShape = function(shape){
nodeShapes[ shape.name.toLowerCase() ] = shape;
shape.name = shape.name.toLowerCase();
$.cytoscapeweb("debug", "SVG renderer registered shape with name `%s` and definition %o", shape.name, shape);
};
// use this as an example for adding more node shapes
registerNodeShape({
// name of the shape
name: "ellipse",
// generate the shape svg
svg: function(svg, parent, node, position, style){
return svg.ellipse(parent, position.x, position.y, style.width, style.height);
},
// update unique style attributes for this shape
// see http://keith-wood.name/svgRef.html for api reference
update: function(svg, parent, node, position, style){
svg.change(node._private.svg, {
cx: position.x,
cy: position.y,
rx: style.width / 2,
ry: style.height / 2
});
},
// 2D shape in intersection lib
intersectionShape: Ellipse
});
registerNodeShape({
name: "rectangle",
svg: function(svg, parent, node, position, style){
return svg.rect(parent, position.x - style.width/2, position.y - style.height/2, style.width, style.height);
},
update: function(svg, parent, node, position, style){
svg.change(node._private.svg, {
x: position.x - style.width/2,
y: position.y - style.height/2,
width: style.width,
height: style.height
});
},
intersectionShape: Rectangle
});
registerNodeShape({
name: "roundrectangle",
svg: function(svg, parent, node, position, style){
return svg.rect(parent, position.x - style.width/2, position.y - style.height/2, style.width, style.height, style.width/4, style.height/4);
},
update: function(svg, parent, node, position, style){
svg.change(node._private.svg, {
x: position.x - style.width/2,
y: position.y - style.height/2,
width: style.width,
height: style.height
});
},
intersectionShape: Rectangle
});
registerNodeShape({
name: "triangle",
svg: function(svg, parent, node, position, style){
return svg.polygon(parent,
[
[position.x, position.y - style.height/2],
[position.x + style.width/2, position.y + style.height/2],
[position.x - style.width/2, position.y + style.height/2]
]);
},
update: function(svg, parent, node, position, style){
svg.change(node._private.svg, {
points: [
[position.x, position.y - style.height/2],
[position.x + style.width/2, position.y + style.height/2],
[position.x - style.width/2, position.y + style.height/2]
]
});
},
intersectionShape: Polygon
});
function visibility(v){
if( v != null && typeof v == typeof "" && ( v == "hidden" || v == "visible" ) ){
return v;
} else {
$.cytoscapeweb("error", "SVG renderer does not recognise %o as a valid visibility", v);
}
};
function percent(p){
if( p != null && typeof p == typeof 1 && !isNaN(p) && 0 <= p && p <= 1 ){
return p;
} else {
$.cytoscapeweb("error", "SVG renderer does not recognise %o as a valid percent (should be between 0 and 1)", p);
}
}
function color(c){
if( c != null && typeof c == typeof "" && $.Color(c) != "" ){
return $.Color(c).toHEX();
} else {
$.cytoscapeweb("error", "SVG renderer does not recognise %o as a valid colour", c);
}
}
function number(n){
if( n != null && typeof n == typeof 1 && !isNaN(n) ){
return n;
} else {
$.cytoscapeweb("error", "SVG renderer does not recognise %o as a valid number", n);
}
}
function nodeShape(name){
var ret = nodeShapes[ name.toLowerCase() ];
if( ret == null ){
$.cytoscapeweb("error", "SVG renderer does not recognise %s as a valid node shape", name);
}
return ret;
}
function arrowShape(name){
var ret = arrowShapes[ name.toLowerCase() ];
if( ret == null ){
$.cytoscapeweb("error", "SVG renderer does not recognise %s as a valid edge arrow shape", name);
}
return ret;
}
function lineStyle(name){
var ret = lineStyles[ name.toLowerCase() ];
if( ret == null ){
$.cytoscapeweb("error", "SVG renderer does not recognise %s as a valid line style", name);
}
return ret;
}
function labelHalign(a){
if( a != null && typeof a == typeof "" && ( a == "left" || a == "right" || a == "middle" ) ){
return a;
} else {
$.cytoscapeweb("error", "SVG renderer does not recognise %o as a valid label horizonal alignment", a);
}
}
function labelValign(a){
if( a != null && typeof a == typeof "" && ( a == "top" || a == "bottom" || a == "middle" ) ){
return a;
} else {
$.cytoscapeweb("error", "SVG renderer does not recognise %o as a valid label vertical alignment", a);
}
}
function cursor(name){
if( name == "grab" ){
if( $.browser.webkit ){
return "-webkit-grab";
} else if( $.browser.mozilla ){
return "-moz-grab";
} else {
return "move";
}
} else if( name == "grabbing" ){
if( $.browser.webkit ){
return "-webkit-grabbing";
} else if( $.browser.mozilla ){
return "-moz-grabbing";
} else {
return "move";
}
} else {
return name;
}
}
function SvgRenderer(options){
$.cytoscapeweb("debug", "Creating SVG renderer with options (%o)", options);
this.options = options;
this.style = $.extend(true, {}, defaults, options.style);
$.cytoscapeweb("debug", "SVG renderer is using style (%o)", this.style);
}
SvgRenderer.prototype.init = function(callback){
var container = $(this.options.selector);
var svg = container.svg('get');
var self = this;
this.container = container;
this.svg = svg;
this.cy = this.options.cytoscapeweb;
if( svg != null ){
svg.clear(true);
} else {
container.css({
padding: "0 !important"
});
container.svg({
onLoad: function(s){
self.scale = 1;
self.translation = { x: 0, y: 0 };
container.find("svg").css("overflow", "hidden"); // fixes ie overflow
self.transformTouchEvent(window, "touchmove", "mousemove");
svg = s;
self.svg = svg;
self.edgesGroup = svg.group();
self.nodesGroup = svg.group();
self.svgRoot = $(self.nodesGroup).parents("svg:first")[0];
self.selectedElements = self.cy.collection();
$(self.edgesGroup).svgattr("class", "cw-edges");
$(self.nodesGroup).svgattr("class", "cw-nodes");
self.defs = self.svg.defs();
self.makeBackgroundInteractive();
callback();
}
});
}
};
SvgRenderer.prototype.offsetFix = function(e){
var self = this;
// firefox fix :(
if( e.offsetX == null || e.offsetY == null ){
e.offsetX = e.clientX - $(self.options.selector).offset().left;
e.offsetY = e.clientY - $(self.options.selector).offset().top;
}
};
SvgRenderer.prototype.makeBackgroundInteractive = function(){
var self = this;
var svgDomElement = self.svgRoot;
var panDelay = 150;
self.shiftDown = false;
$(window).bind("keydown keyup", function(e){
self.shiftDown = e.shiftKey;
});
$(svgDomElement).bind("mousedown", function(mousedownEvent){
if( mousedownEvent.target == svgDomElement || $(mousedownEvent.target).parents("g:last")[0] == self.edgesGroup ){
mousedownEvent.preventDefault();
self.offsetFix(mousedownEvent);
var selectionSquare = null;
var selectionBounds = {};
var panning = false;
var selecting = true;
var originX = mousedownEvent.pageX;
var originY = mousedownEvent.pageY;
var selectOriginX = mousedownEvent.offsetX;
var selectOriginY = mousedownEvent.offsetY;
var selectDx = 0;
var selectDy = 0;
var panDelayTimeout = setTimeout(function(){
panning = true;
selecting = false;
self.svg.change(svgDomElement, {
cursor: cursor(self.style.global.panCursor)
});
$(self.options.selector).scrollLeft(100);
}, panDelay);
var dragHandler = function(dragEvent){
clearTimeout(panDelayTimeout);
var dx = dragEvent.pageX - originX;
var dy = dragEvent.pageY - originY;
// new origin each event
originX = dragEvent.pageX;
originY = dragEvent.pageY;
selectDx += dx;
selectDy += dy;
if( panning ){
self.translation.x += dx;
self.translation.y += dy;
self.pan(self.translation);
}
if( selecting ){
if( selectionSquare == null ){
selectionSquare = self.svg.rect(selectOriginX, selectOriginY, 0, 0, {
fill: color(self.style.global.selectionFillColor),
opacity: percent(self.style.global.selectionOpacity),
stroke: color(self.style.global.selectionBorderColor),
strokeWidth: number(self.style.global.selectionBorderWidth)
});
} else {
var width = Math.abs(selectDx);
var height = Math.abs(selectDy);
var x = selectDx >= 0 ? selectOriginX : selectOriginX + selectDx;
var y = selectDy >= 0 ? selectOriginY : selectOriginY + selectDy;
selectionBounds = {
x1: x,
y1: y,
x2: x + width,
y2: y + height
};
self.svg.change(selectionSquare, {
x: x,
y: y,
width: width,
height: height
});
}
}
};
$(window).bind("mousemove", dragHandler);
var endHandler = function(mouseupEvent){
clearTimeout(panDelayTimeout);
$(window).unbind("mousemove", dragHandler);
$(window).unbind("mouseup", endHandler);
$(window).unbind("blur", endHandler);
$(svgDomElement).unbind("mouseup", endHandler);
if( panning ){
self.svg.change(svgDomElement, {
cursor: null
});
}
if( selecting ){
if( selectionSquare != null ){
self.selectElementsFromIntersection(selectionSquare, selectionBounds);
self.svg.remove(selectionSquare);
} else if( mouseupEvent.target == svgDomElement ){
self.unselectAll();
}
}
};
$(window).bind("mouseup", endHandler);
$(window).bind("blur", endHandler);
$(svgDomElement).bind("mouseup", endHandler);
}
}).bind("mousewheel", function(e, delta, deltaX, deltaY){
if( $.browser.msie ){
return; // TODO fix IE bug
}
self.offsetFix(e);
var point = {
x: e.offsetX,
y: e.offsetY
};
var pan1 = self.pan();
var zoom1 = self.zoom();
var zoom2 = zoom1 * (1 + delta);
var pan2 = {
x: -zoom2/zoom1 * (point.x - pan1.x) + point.x,
y: -zoom2/zoom1 * (point.y - pan1.y) + point.y
};
self.transform({
translation: pan2,
scale: zoom2
});
e.preventDefault();
});
$(svgDomElement).bind("mousedown mouseup click mouseover mouseout", function(e){
var event = $.extend({}, e, { cyTarget: self.cy });
self.cy.background().trigger(event);
if( e.type == "mouseover" && e.target != svgDomElement ){
return;
}
if( e.type == "mouseout" ){
var parents = $(e.toElement).parents();
if( e.toElement == svgDomElement ){
return;
}
for(var i = 0; i < parents.size(); i++){
var parent = parents.eq(i);
if( parent[0] == svgDomElement ){
return;
}
}
}
self.cy.trigger(event);
});
};
SvgRenderer.prototype.zoom = function(scale){
if( scale === undefined ){
return this.scale;
}
this.transform({
scale: scale
});
};
SvgRenderer.prototype.panBy = function(position){
$.cytoscapeweb("debug", "Relatively pan SVG renderer with position (%o)", position);
this.transform({
translation: {
x: this.translation.x + number(position.x),
y: this.translation.y + number(position.y)
}
});
};
SvgRenderer.prototype.pan = function(position){
$.cytoscapeweb("debug", "Pan SVG renderer with position (%o)", position);
if( position === undefined ){
return {
x: this.translation.x,
y: this.translation.y
};
}
if( position == null || typeof position != typeof {} ){
$.cytoscapeweb("error", "You can not pan without specifying a proper position object; `%o` is invalid", position);
return;
}
this.transform({
translation: {
x: number(position.x),
y: number(position.y)
}
});
};
SvgRenderer.prototype.transform = function(params){
var translation = params.translation;
var scale = params.scale;
var self = this;
if( translation != null ){
self.translation = {
x: translation.x,
y: translation.y
};
}
if( scale != null ){
self.scale = scale;
}
function transform(svgElement){
self.svg.change(svgElement, {
transform: "translate(" + self.translation.x + "," + self.translation.y + ") scale(" + self.scale + ")"
});
}
transform(self.nodesGroup);
transform(self.edgesGroup);
};
SvgRenderer.prototype.calculateStyle = function(element){
var self = this;
var styleCalculator = self.options.styleCalculator;
var style = $.extend({}, this.style[element.group()], element._private.bypass);
if( element.selected() ){
var selected = style.selected;
delete style.selected;
style = $.extend({}, style, selected);
} else {
delete style.selected;
}
$.each(style, function(styleName, styleVal){
style[styleName] = styleCalculator.calculate(element, styleVal);
});
element._private.style = style;
if( element._private.group == "nodes" ){
// width and height are size unless at least one is defined
if( style.width == null && style.height == null ){
style.width = style.size;
style.height = style.size;
} else {
// use the size for undefined other field
if( style.height != null ){
if( style.width == null ){
style.width = style.size;
}
}
if( style.width != null ){
if( style.height == null ){
style.height = style.size;
}
}
}
// opacity defaults to overall opacity if not set
if( style.borderOpacity == null ){
style.borderOpacity = style.opacity;
}
if( style.fillOpacity == null ){
style.fillOpacity = style.opacity;
}
}
if( element._private.group == "edges" ){
var source = element.source();
var target = element.target();
function calculateVisibility(){
if( source._private.style.visibility == "visible" && target._private.style.visibility == "visible" ){
return visibility(style.visibility);
} else {
return "hidden";
}
}
style.visibility = calculateVisibility();
}
return style;
};
SvgRenderer.prototype.updateNodePositionFromShape = function(element){
var style = element._private.style;
var parent = element._private.svgGroup;
var position = element._private.position;
nodeShape(style.shape).update(this.svg, parent, element, position, style);
};
SvgRenderer.prototype.transformTouchEvent = function(domElement, fromEvent, toEvent){
domElement.addEventListener(fromEvent, function(e){
var evt = $.extend({}, e);
evt.type = toEvent;
if( e.touches != null && e.touches[0] != null ){
evt.pageX = e.touches[0].pageX;
evt.pageY = e.touches[0].pageY;
evt.clientX = e.touches[0].clientX;
evt.clientY = e.touches[0].clientY;
evt.screenX = e.touches[0].screenX;
evt.screenY = e.touches[0].screenY;
evt.layerX = e.touches[0].layerX;
evt.layerY = e.touches[0].layerY;
}
e.preventDefault();
$(domElement).trigger(evt);
return false;
});
};
SvgRenderer.prototype.makeSvgEdgeInteractive = function(element){
var svgDomElement = element._private.svg;
var svgCanvas = $(svgDomElement).parents("svg:first")[0];
var self = this;
$(svgDomElement).bind("mouseup mousedown click", function(e){
element.trigger(e);
}).bind("click", function(e){
self.selectElement(element);
});
};
SvgRenderer.prototype.makeSvgNodeLabelInteractive = function(element){
var svgDomElement = element._private.svgLabel;
var self = this;
$(svgDomElement).bind("click", function(clickEvent){
self.offsetFix(clickEvent);
var position = self.modelPoint({
x: clickEvent.offsetX,
y: clickEvent.offsetY
});
});
};
SvgRenderer.prototype.makeSvgNodeInteractive = function(element){
var svgDomElement = element._private.svg;
var svgCanvas = $(svgDomElement).parents("svg:first")[0];
var self = this;
var draggedAfterMouseDown = null;
// you need to prevent default event handling to
// prevent built-in browser drag-and-drop etc
$(svgDomElement).bind("mousedown", function(mousedownEvent){
draggedAfterMouseDown = false;
element.trigger(mousedownEvent);
if( element._private.grabbed || element._private.locked ){
mousedownEvent.preventDefault();
return;
}
element._private.grabbed = true;
var originX = mousedownEvent.pageX;
var originY = mousedownEvent.pageY;
var justStartedDragging = true;
var dragHandler = function(dragEvent){
self.moveToFront(element);
draggedAfterMouseDown = true;
var dx = (dragEvent.pageX - originX) / self.zoom();
var dy = (dragEvent.pageY - originY) / self.zoom();
// new origin each event
originX = dragEvent.pageX;
originY = dragEvent.pageY;
var elements;
if( element.selected() ){
elements = self.selectedElements.add(element);
} else {
elements = element.collection();
}
elements.each(function(i, e){
e._private.position.x += dx;
e._private.position.y += dy;
});
self.updatePosition( elements );
if( justStartedDragging ){
justStartedDragging = false;
element.trigger($.extend({}, dragEvent, { type: "dragstart" }));
} else {
element.trigger($.extend({}, dragEvent, { type: "drag" }));
}
};
$(window).bind("mousemove", dragHandler);
var finishedDragging = false;
var endHandler = function(mouseupEvent){
if( !finishedDragging ){
finishedDragging = true;
} else {
return;
}
$(window).unbind("mousemove", dragHandler);
$(window).unbind("mouseup", endHandler);
$(window).unbind("blur", endHandler);
$(svgDomElement).unbind("mouseup", endHandler);
element._private.grabbed = false;
element.trigger($.extend({}, mouseupEvent, { type: "dragstop" }));
};
$(window).bind("mouseup", endHandler);
$(window).bind("blur", endHandler);
$(svgDomElement).bind("mouseup", endHandler);
mousedownEvent.preventDefault();
}).bind("mouseup", function(e){
element.trigger($.extend({}, e));
if( draggedAfterMouseDown == false ){
draggedAfterMouseDown = null;
element.trigger($.extend({}, e, { type: "click" }));
self.selectElement(element);
}
}).bind("mouseover mouseout mousemove", function(e){
element.trigger($.extend({}, e));
});
};
SvgRenderer.prototype.modelPoint = function(screenPoint){
var self = this;
return {
x: (screenPoint.x - self.pan().x) / self.zoom(),
y: (screenPoint.y - self.pan().y) / self.zoom()
};
}
SvgRenderer.prototype.renderedPoint = function(modelPoint){
var self = this;
return {
x: modelPoint.x * self.zoom() + self.pan().x,
y: modelPoint.y * self.zoom() + self.pan().y
};
}
SvgRenderer.prototype.renderedPosition = function(element){
var self = this;
return self.renderedPoint(element._private.position);
};
SvgRenderer.prototype.hideElements = function(collection){
collection.each(function(i, element){
element._private.bypass.visibility = "hidden";
});
this.updateBypass(collection);
};
SvgRenderer.prototype.showElements = function(collection){
collection.each(function(i, element){
element._private.bypass.visibility = "visible";
});
this.updateBypass(collection);
};
SvgRenderer.prototype.elementIsVisible = function(element){
return element._private.bypass.visibility != "hidden";
};
SvgRenderer.prototype.renderedDimensions = function(element){
var self = this;
if( element.isNode() ){
return {
height: element._private.style.height * self.zoom(),
width: element._private.style.width * self.zoom(),
size: element._private.style.size * self.zoom()
};
} else {
return {
width: element._private.style.width * self.zoom()
};
}
};
SvgRenderer.prototype.unselectElements = function(collection){
collection = collection.collection();
collection.unselect();
this.selectedElements = this.selectedElements.not(collection);
};
// by drag select
SvgRenderer.prototype.selectElementsFromIntersection = function(svgSelectionShape, selectionBounds){
var self = this;
var toSelect = this.cy.collection();
var toUnselect = this.cy.collection();
function nodeInside(element){
// intersect rectangle in the model with the actual node shape in the model
var shape = nodeShape(element._private.style.shape).intersectionShape;
var modelRectangleP1 = self.modelPoint({ x: selectionBounds.x1, y: selectionBounds.y1 });
var modelRectangleP2 = self.modelPoint({ x: selectionBounds.x2, y: selectionBounds.y2 });
var modelRectangle = self.svg.rect(modelRectangleP1.x, modelRectangleP1.y, modelRectangleP2.x - modelRectangleP1.x, modelRectangleP2.y - modelRectangleP1.y);
var intersection = Intersection.intersectShapes(new Rectangle(modelRectangle), new shape(element._private.svg));
self.svg.remove(modelRectangle);
// rendered node
var zoom = self.zoom();
var x = element.renderedPosition().x;
var y = element.renderedPosition().y;
var w = element.renderedDimensions().width + element._private.style.borderWidth * zoom;
var h = element.renderedDimensions().height + element._private.style.borderWidth * zoom;
// rendered selection square
var x1 = selectionBounds.x1;
var y1 = selectionBounds.y1;
var x2 = selectionBounds.x2;
var y2 = selectionBounds.y2;
var centerPointInside = x1 <= x && x <= x2 && y1 <= y && y <= y2;
var intersects = intersection.points.length > 0;
return centerPointInside || intersects;
}
function positionInside(position){
var x = position.x;
var y = position.y;