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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.Columns"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.charting.plot2d.Columns"] = true;
dojo.provide("dojox.charting.plot2d.Columns");
dojo.require("dojox.charting.plot2d.common");
dojo.require("dojox.charting.plot2d.Base");
dojo.require("dojox.gfx.fx");
dojo.require("dojox.lang.utils");
dojo.require("dojox.lang.functional");
dojo.require("dojox.lang.functional.reversed");
(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.Columns", dojox.charting.plot2d.Base, {
// summary:
// The plot object representing a column chart (vertical bars).
defaultParams: {
hAxis: "x", // use a horizontal axis named "x"
vAxis: "y", // use a vertical axis named "y"
gap: 0, // gap between columns in pixels
animate: null // animate bars into place
},
optionalParams: {
minBarSize: 1, // minimal column width in pixels
maxBarSize: 1, // maximal column width in pixels
// theme component
stroke: {},
outline: {},
shadow: {},
fill: {},
font: "",
fontColor: ""
},
constructor: function(chart, kwArgs){
// summary:
// The constructor for a columns chart.
// chart: dojox.charting.Chart2D
// The chart this plot belongs to.
// kwArgs: dojox.charting.plot2d.__BarCtorArgs?
// An optional keyword arguments object to help define the plot.
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;
},
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.collectSimpleStats(this.series);
stats.hmin -= 0.5;
stats.hmax += 0.5;
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.Columns
// 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, f, gap, width,
ht = this._hScaler.scaler.getTransformerFromModel(this._hScaler),
vt = this._vScaler.scaler.getTransformerFromModel(this._vScaler),
baseline = Math.max(0, this._vScaler.bounds.lower),
baselineHeight = vt(baseline),
events = this.events();
f = dc.calculateBarSize(this._hScaler.bounds.scale, this.opt);
gap = f.gap;
width = 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("column", [this.opt, run]), s = run.group,
eventSeries = new Array(run.data.length);
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,
vv = vt(v),
height = vv - baselineHeight,
h = Math.abs(height),
finalTheme = typeof value != "number" ?
t.addMixin(theme, "column", value, true) :
t.post(theme, "column");
if(width >= 1 && h >= 1){
var rect = {
x: offsets.l + ht(j + 0.5) + gap,
y: dim.height - offsets.b - (v > baseline ? vv : baselineHeight),
width: width, height: h
};
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: "column",
index: j,
run: run,
shape: shape,
x: j + 0.5,
y: v
};
this._connectEvents(o);
eventSeries[j] = o;
}
if(this.animate){
this._animateColumn(shape, dim.height - offsets.b - baselineHeight, h);
}
}
}
}
this._eventSeries[run.name] = eventSeries;
run.dirty = false;
}
this.dirty = false;
return this; // dojox.charting.plot2d.Columns
},
_animateColumn: function(shape, voffset, vsize){
dojox.gfx.fx.animateTransform(dojo.delegate({
shape: shape,
duration: 1200,
transform: [
{name: "translate", start: [0, voffset - (voffset/vsize)], end: [0, 0]},
{name: "scale", start: [1, 1/vsize], end: [1, 1]},
{name: "original"}
]
}, this.animate)).play();
}
});
})();
}
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