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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.StackedBars"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.charting.plot2d.StackedBars"] = true;
dojo.provide("dojox.charting.plot2d.StackedBars");
dojo.require("dojox.charting.plot2d.common");
dojo.require("dojox.charting.plot2d.Bars");
dojo.require("dojox.lang.functional");
dojo.require("dojox.lang.functional.reversed");
dojo.require("dojox.lang.functional.sequence");
(function(){
var df = dojox.lang.functional, dc = dojox.charting.plot2d.common,
purgeGroup = df.lambda("item.purgeGroup()");
dojo.declare("dojox.charting.plot2d.StackedBars", dojox.charting.plot2d.Bars, {
// summary:
// The plot object representing a stacked bar chart (horizontal bars).
getSeriesStats: function(){
// summary:
// Calculate the min/max on all attached series in both directions.
// returns: Object
// {hmin, hmax, vmin, vmax} min/max in both directions.
var stats = dc.collectStackedStats(this.series), t;
this._maxRunLength = stats.hmax;
stats.hmin -= 0.5;
stats.hmax += 0.5;
t = stats.hmin, stats.hmin = stats.vmin, stats.vmin = t;
t = stats.hmax, stats.hmax = stats.vmax, stats.vmax = t;
return stats;
},
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.StackedBars
// A reference to this plot for functional chaining.
if(this._maxRunLength <= 0){
return this;
}
// stack all values
var acc = df.repeat(this._maxRunLength, "-> 0", 0);
for(var i = 0; i < this.series.length; ++i){
var run = this.series[i];
for(var j = 0; j < run.data.length; ++j){
var value = run.data[j];
if(value !== null){
var v = typeof value == "number" ? value : value.y;
if(isNaN(v)){ v = 0; }
acc[j] += v;
}
}
}
// draw runs in backwards
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, f, gap, height,
ht = this._hScaler.scaler.getTransformerFromModel(this._hScaler),
vt = this._vScaler.scaler.getTransformerFromModel(this._vScaler),
events = this.events();
f = dc.calculateBarSize(this._vScaler.bounds.scale, this.opt);
gap = f.gap;
height = f.size;
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();
var theme = t.next("bar", [this.opt, run]), s = run.group,
eventSeries = new Array(acc.length);
for(var j = 0; j < acc.length; ++j){
var value = run.data[j];
if(value !== null){
var v = acc[j],
width = ht(v),
finalTheme = typeof value != "number" ?
t.addMixin(theme, "bar", value, true) :
t.post(theme, "bar");
if(width >= 1 && height >= 1){
var rect = {
x: offsets.l,
y: dim.height - offsets.b - vt(j + 1.5) + gap,
width: width, height: height
};
var specialFill = this._plotFill(finalTheme.series.fill, dim, offsets);
specialFill = this._shapeFill(specialFill, rect);
var shape = s.createRect(rect).setFill(specialFill).setStroke(finalTheme.series.stroke);
run.dyn.fill = shape.getFill();
run.dyn.stroke = shape.getStroke();
if(events){
var o = {
element: "bar",
index: j,
run: run,
shape: shape,
x: v,
y: j + 1.5
};
this._connectEvents(o);
eventSeries[j] = o;
}
if(this.animate){
this._animateBar(shape, offsets.l, -width);
}
}
}
}
this._eventSeries[run.name] = eventSeries;
run.dirty = false;
// update the accumulator
for(var j = 0; j < run.data.length; ++j){
var value = run.data[j];
if(value !== null){
var v = typeof value == "number" ? value : value.y;
if(isNaN(v)){ v = 0; }
acc[j] -= v;
}
}
}
this.dirty = false;
return this; // dojox.charting.plot2d.StackedBars
}
});
})();
}
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