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/*
Copyright (c) 2004-2011, The Dojo Foundation All Rights Reserved.
Available via Academic Free License >= 2.1 OR the modified BSD license.
see: http://dojotoolkit.org/license for details
*/
if(!dojo._hasResource["dojox.charting.plot2d.Bubble"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.charting.plot2d.Bubble"] = true;
dojo.provide("dojox.charting.plot2d.Bubble");
dojo.require("dojox.charting.plot2d.Base");
dojo.require("dojox.lang.functional");
(function(){
var df = dojox.lang.functional, du = dojox.lang.utils,
dc = dojox.charting.plot2d.common,
purgeGroup = df.lambda("item.purgeGroup()");
dojo.declare("dojox.charting.plot2d.Bubble", dojox.charting.plot2d.Base, {
// summary:
// A plot representing bubbles. Note that data for Bubbles requires 3 parameters,
// in the form of: { x, y, size }, where size determines the size of the bubble.
defaultParams: {
hAxis: "x", // use a horizontal axis named "x"
vAxis: "y", // use a vertical axis named "y"
animate: null // animate bars into place
},
optionalParams: {
// theme component
stroke: {},
outline: {},
shadow: {},
fill: {},
font: "",
fontColor: ""
},
constructor: function(chart, kwArgs){
// summary:
// Create a plot of bubbles.
// chart: dojox.charting.Chart2D
// The chart this plot belongs to.
// kwArgs: dojox.charting.plot2d.__DefaultCtorArgs?
// Optional keyword arguments object to help define plot parameters.
this.opt = dojo.clone(this.defaultParams);
du.updateWithObject(this.opt, kwArgs);
du.updateWithPattern(this.opt, kwArgs, this.optionalParams);
this.series = [];
this.hAxis = this.opt.hAxis;
this.vAxis = this.opt.vAxis;
this.animate = this.opt.animate;
},
// override the render so that we are plotting only circles.
render: function(dim, offsets){
// summary:
// Run the calculations for any axes for this plot.
// dim: Object
// An object in the form of { width, height }
// offsets: Object
// An object of the form { l, r, t, b}.
// returns: dojox.charting.plot2d.Bubble
// A reference to this plot for functional chaining.
if(this.zoom && !this.isDataDirty()){
return this.performZoom(dim, offsets);
}
this.resetEvents();
this.dirty = this.isDirty();
if(this.dirty){
dojo.forEach(this.series, purgeGroup);
this._eventSeries = {};
this.cleanGroup();
var s = this.group;
df.forEachRev(this.series, function(item){ item.cleanGroup(s); });
}
var t = this.chart.theme,
ht = this._hScaler.scaler.getTransformerFromModel(this._hScaler),
vt = this._vScaler.scaler.getTransformerFromModel(this._vScaler),
events = this.events();
for(var i = this.series.length - 1; i >= 0; --i){
var run = this.series[i];
if(!this.dirty && !run.dirty){
t.skip();
this._reconnectEvents(run.name);
continue;
}
run.cleanGroup();
if(!run.data.length){
run.dirty = false;
t.skip();
continue;
}
if(typeof run.data[0] == "number"){
console.warn("dojox.charting.plot2d.Bubble: the data in the following series cannot be rendered as a bubble chart; ", run);
continue;
}
var theme = t.next("circle", [this.opt, run]), s = run.group,
points = dojo.map(run.data, function(v, i){
return v ? {
x: ht(v.x) + offsets.l,
y: dim.height - offsets.b - vt(v.y),
radius: this._vScaler.bounds.scale * (v.size / 2)
} : null;
}, this);
var frontCircles = null, outlineCircles = null, shadowCircles = null;
// make shadows if needed
if(theme.series.shadow){
shadowCircles = dojo.map(points, function(item){
if(item !== null){
var finalTheme = t.addMixin(theme, "circle", item, true),
shadow = finalTheme.series.shadow;
var shape = s.createCircle({
cx: item.x + shadow.dx, cy: item.y + shadow.dy, r: item.radius
}).setStroke(shadow).setFill(shadow.color);
if(this.animate){
this._animateBubble(shape, dim.height - offsets.b, item.radius);
}
return shape;
}
return null;
}, this);
if(shadowCircles.length){
run.dyn.shadow = shadowCircles[shadowCircles.length - 1].getStroke();
}
}
// make outlines if needed
if(theme.series.outline){
outlineCircles = dojo.map(points, function(item){
if(item !== null){
var finalTheme = t.addMixin(theme, "circle", item, true),
outline = dc.makeStroke(finalTheme.series.outline);
outline.width = 2 * outline.width + theme.series.stroke.width;
var shape = s.createCircle({
cx: item.x, cy: item.y, r: item.radius
}).setStroke(outline);
if(this.animate){
this._animateBubble(shape, dim.height - offsets.b, item.radius);
}
return shape;
}
return null;
}, this);
if(outlineCircles.length){
run.dyn.outline = outlineCircles[outlineCircles.length - 1].getStroke();
}
}
// run through the data and add the circles.
frontCircles = dojo.map(points, function(item){
if(item !== null){
var finalTheme = t.addMixin(theme, "circle", item, true),
rect = {
x: item.x - item.radius,
y: item.y - item.radius,
width: 2 * item.radius,
height: 2 * item.radius
};
var specialFill = this._plotFill(finalTheme.series.fill, dim, offsets);
specialFill = this._shapeFill(specialFill, rect);
var shape = s.createCircle({
cx: item.x, cy: item.y, r: item.radius
}).setFill(specialFill).setStroke(finalTheme.series.stroke);
if(this.animate){
this._animateBubble(shape, dim.height - offsets.b, item.radius);
}
return shape;
}
return null;
}, this);
if(frontCircles.length){
run.dyn.fill = frontCircles[frontCircles.length - 1].getFill();
run.dyn.stroke = frontCircles[frontCircles.length - 1].getStroke();
}
if(events){
var eventSeries = new Array(frontCircles.length);
dojo.forEach(frontCircles, function(s, i){
if(s !== null){
var o = {
element: "circle",
index: i,
run: run,
shape: s,
outline: outlineCircles && outlineCircles[i] || null,
shadow: shadowCircles && shadowCircles[i] || null,
x: run.data[i].x,
y: run.data[i].y,
r: run.data[i].size / 2,
cx: points[i].x,
cy: points[i].y,
cr: points[i].radius
};
this._connectEvents(o);
eventSeries[i] = o;
}
}, this);
this._eventSeries[run.name] = eventSeries;
}else{
delete this._eventSeries[run.name];
}
run.dirty = false;
}
this.dirty = false;
return this; // dojox.charting.plot2d.Bubble
},
_animateBubble: function(shape, offset, size){
dojox.gfx.fx.animateTransform(dojo.delegate({
shape: shape,
duration: 1200,
transform: [
{name: "translate", start: [0, offset], end: [0, 0]},
{name: "scale", start: [0, 1/size], end: [1, 1]},
{name: "original"}
]
}, this.animate)).play();
}
});
})();
}
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