278 lines
7.4 KiB
JavaScript
278 lines
7.4 KiB
JavaScript
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dojo.provide("dojox.gfx.fx");
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dojo.require("dojox.gfx.matrix");
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(function(){
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var d = dojo, g = dojox.gfx, m = g.matrix;
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// Generic interpolators. Should they be moved to dojox.fx?
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var InterpolNumber = function(start, end){
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this.start = start, this.end = end;
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};
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d.extend(InterpolNumber, {
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getValue: function(r){
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return (this.end - this.start) * r + this.start;
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}
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});
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var InterpolUnit = function(start, end, unit){
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this.start = start, this.end = end;
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this.unit = unit;
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};
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d.extend(InterpolUnit, {
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getValue: function(r){
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return (this.end - this.start) * r + this.start + this.unit;
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}
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});
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var InterpolColor = function(start, end){
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this.start = start, this.end = end;
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this.temp = new dojo.Color();
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};
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d.extend(InterpolColor, {
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getValue: function(r){
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return d.blendColors(this.start, this.end, r, this.temp);
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}
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});
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var InterpolValues = function(values){
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this.values = values;
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this.length = values.length;
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};
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d.extend(InterpolValues, {
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getValue: function(r){
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return this.values[Math.min(Math.floor(r * this.length), this.length - 1)];
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}
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});
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var InterpolObject = function(values, def){
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this.values = values;
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this.def = def ? def : {};
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};
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d.extend(InterpolObject, {
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getValue: function(r){
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var ret = dojo.clone(this.def);
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for(var i in this.values){
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ret[i] = this.values[i].getValue(r);
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}
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return ret;
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}
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});
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var InterpolTransform = function(stack, original){
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this.stack = stack;
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this.original = original;
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};
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d.extend(InterpolTransform, {
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getValue: function(r){
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var ret = [];
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dojo.forEach(this.stack, function(t){
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if(t instanceof m.Matrix2D){
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ret.push(t);
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return;
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}
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if(t.name == "original" && this.original){
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ret.push(this.original);
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return;
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}
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if(!(t.name in m)){ return; }
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var f = m[t.name];
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if(typeof f != "function"){
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// constant
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ret.push(f);
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return;
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}
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var val = dojo.map(t.start, function(v, i){
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return (t.end[i] - v) * r + v;
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}),
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matrix = f.apply(m, val);
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if(matrix instanceof m.Matrix2D){
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ret.push(matrix);
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}
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}, this);
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return ret;
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}
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});
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var transparent = new d.Color(0, 0, 0, 0);
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var getColorInterpol = function(prop, obj, name, def){
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if(prop.values){
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return new InterpolValues(prop.values);
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}
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var value, start, end;
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if(prop.start){
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start = g.normalizeColor(prop.start);
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}else{
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start = value = obj ? (name ? obj[name] : obj) : def;
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}
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if(prop.end){
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end = g.normalizeColor(prop.end);
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}else{
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if(!value){
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value = obj ? (name ? obj[name] : obj) : def;
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}
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end = value;
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}
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return new InterpolColor(start, end);
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};
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var getNumberInterpol = function(prop, obj, name, def){
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if(prop.values){
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return new InterpolValues(prop.values);
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}
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var value, start, end;
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if(prop.start){
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start = prop.start;
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}else{
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start = value = obj ? obj[name] : def;
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}
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if(prop.end){
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end = prop.end;
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}else{
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if(typeof value != "number"){
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value = obj ? obj[name] : def;
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}
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end = value;
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}
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return new InterpolNumber(start, end);
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};
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g.fx.animateStroke = function(/*Object*/ args){
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// summary:
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// Returns an animation which will change stroke properties over time
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// example:
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// | dojox.gfx.fx.animateStroke{{
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// | shape: shape,
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// | duration: 500,
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// | color: {start: "red", end: "green"},
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// | width: {end: 15},
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// | join: {values: ["miter", "bevel", "round"]}
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// | }).play();
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if(!args.easing){ args.easing = d._defaultEasing; }
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var anim = new d._Animation(args), shape = args.shape, stroke;
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d.connect(anim, "beforeBegin", anim, function(){
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stroke = shape.getStroke();
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var prop = args.color, values = {}, value, start, end;
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if(prop){
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values.color = getColorInterpol(prop, stroke, "color", transparent);
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}
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prop = args.style;
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if(prop && prop.values){
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values.style = new InterpolValues(prop.values);
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}
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prop = args.width;
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if(prop){
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values.width = getNumberInterpol(prop, stroke, "width", 1);
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}
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prop = args.cap;
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if(prop && prop.values){
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values.cap = new InterpolValues(prop.values);
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}
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prop = args.join;
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if(prop){
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if(prop.values){
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values.join = new InterpolValues(prop.values);
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}else{
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start = prop.start ? prop.start : (stroke && stroke.join || 0);
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end = prop.end ? prop.end : (stroke && stroke.join || 0);
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if(typeof start == "number" && typeof end == "number"){
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values.join = new InterpolNumber(start, end);
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}
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}
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}
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this.curve = new InterpolObject(values, stroke);
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});
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d.connect(anim, "onAnimate", shape, "setStroke");
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return anim; // dojo._Animation
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};
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g.fx.animateFill = function(/*Object*/ args){
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// summary:
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// Returns an animation which will change fill color over time.
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// Only solid fill color is supported at the moment
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// example:
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// | dojox.gfx.fx.animateFill{{
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// | shape: shape,
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// | duration: 500,
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// | color: {start: "red", end: "green"}
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// | }).play();
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if(!args.easing){ args.easing = d._defaultEasing; }
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var anim = new d._Animation(args), shape = args.shape, fill;
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d.connect(anim, "beforeBegin", anim, function(){
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fill = shape.getFill();
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var prop = args.color, values = {};
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if(prop){
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this.curve = getColorInterpol(prop, fill, "", transparent);
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}
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});
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d.connect(anim, "onAnimate", shape, "setFill");
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return anim; // dojo._Animation
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};
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g.fx.animateFont = function(/*Object*/ args){
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// summary:
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// Returns an animation which will change font properties over time
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// example:
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// | dojox.gfx.fx.animateFont{{
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// | shape: shape,
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// | duration: 500,
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// | variant: {values: ["normal", "small-caps"]},
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// | size: {end: 10, unit: "pt"}
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// | }).play();
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if(!args.easing){ args.easing = d._defaultEasing; }
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var anim = new d._Animation(args), shape = args.shape, font;
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d.connect(anim, "beforeBegin", anim, function(){
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font = shape.getFont();
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var prop = args.style, values = {}, value, start, end;
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if(prop && prop.values){
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values.style = new InterpolValues(prop.values);
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}
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prop = args.variant;
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if(prop && prop.values){
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values.variant = new InterpolValues(prop.values);
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}
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prop = args.weight;
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if(prop && prop.values){
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values.weight = new InterpolValues(prop.values);
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}
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prop = args.family;
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if(prop && prop.values){
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values.family = new InterpolValues(prop.values);
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}
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prop = args.size;
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if(prop && prop.unit){
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start = parseFloat(prop.start ? prop.start : (shape.font && shape.font.size || "0"));
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end = parseFloat(prop.end ? prop.end : (shape.font && shape.font.size || "0"));
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values.size = new InterpolUnit(start, end, prop.unit);
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}
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this.curve = new InterpolObject(values, font);
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});
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d.connect(anim, "onAnimate", shape, "setFont");
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return anim; // dojo._Animation
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};
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g.fx.animateTransform = function(/*Object*/ args){
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// summary:
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// Returns an animation which will change transformation over time
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// example:
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// | dojox.gfx.fx.animateTransform{{
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// | shape: shape,
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// | duration: 500,
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// | transform: [
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// | {name: "translate", start: [0, 0], end: [200, 200]},
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// | {name: "original"}
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// | ]
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// | }).play();
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if(!args.easing){ args.easing = d._defaultEasing; }
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var anim = new d._Animation(args), shape = args.shape, original;
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d.connect(anim, "beforeBegin", anim, function(){
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original = shape.getTransform();
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this.curve = new InterpolTransform(args.transform, original);
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});
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d.connect(anim, "onAnimate", shape, "setTransform");
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return anim; // dojo._Animation
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};
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})();
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