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//>>built
define("dojox/charting/plot2d/Scatter", ["dojo/_base/lang", "dojo/_base/array", "dojo/_base/declare", "./Base", "./common",
"dojox/lang/functional", "dojox/lang/functional/reversed", "dojox/lang/utils", "dojox/gfx/fx", "dojox/gfx/gradutils"],
function(lang, arr, declare, Base, dc, df, dfr, du, fx, gradutils){
/*=====
var Base = dojox.charting.plot2d.Base;
=====*/
var purgeGroup = dfr.lambda("item.purgeGroup()");
return declare("dojox.charting.plot2d.Scatter", Base, {
// summary:
// A plot object representing a typical scatter chart.
defaultParams: {
hAxis: "x", // use a horizontal axis named "x"
vAxis: "y", // use a vertical axis named "y"
shadows: null, // draw shadows
animate: null // animate chart to place
},
optionalParams: {
// theme component
markerStroke: {},
markerOutline: {},
markerShadow: {},
markerFill: {},
markerFont: "",
markerFontColor: ""
},
constructor: function(chart, kwArgs){
// summary:
// Create the scatter plot.
// chart: dojox.charting.Chart
// The chart this plot belongs to.
// kwArgs: dojox.charting.plot2d.__DefaultCtorArgs?
// An optional keyword arguments object to help define this plot's parameters.
this.opt = lang.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;
},
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.Scatter
// 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){
arr.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, 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;
}
var theme = t.next("marker", [this.opt, run]), s = run.group, lpoly,
ht = this._hScaler.scaler.getTransformerFromModel(this._hScaler),
vt = this._vScaler.scaler.getTransformerFromModel(this._vScaler);
if(typeof run.data[0] == "number"){
lpoly = arr.map(run.data, function(v, i){
return {
x: ht(i + 1) + offsets.l,
y: dim.height - offsets.b - vt(v)
};
}, this);
}else{
lpoly = arr.map(run.data, function(v, i){
return {
x: ht(v.x) + offsets.l,
y: dim.height - offsets.b - vt(v.y)
};
}, this);
}
var shadowMarkers = new Array(lpoly.length),
frontMarkers = new Array(lpoly.length),
outlineMarkers = new Array(lpoly.length);
arr.forEach(lpoly, function(c, i){
var finalTheme = typeof run.data[i] == "number" ?
t.post(theme, "marker") :
t.addMixin(theme, "marker", run.data[i], true),
path = "M" + c.x + " " + c.y + " " + finalTheme.symbol;
if(finalTheme.marker.shadow){
shadowMarkers[i] = s.createPath("M" + (c.x + finalTheme.marker.shadow.dx) + " " +
(c.y + finalTheme.marker.shadow.dy) + " " + finalTheme.symbol).
setStroke(finalTheme.marker.shadow).setFill(finalTheme.marker.shadow.color);
if(this.animate){
this._animateScatter(shadowMarkers[i], dim.height - offsets.b);
}
}
if(finalTheme.marker.outline){
var outline = dc.makeStroke(finalTheme.marker.outline);
outline.width = 2 * outline.width + finalTheme.marker.stroke.width;
outlineMarkers[i] = s.createPath(path).setStroke(outline);
if(this.animate){
this._animateScatter(outlineMarkers[i], dim.height - offsets.b);
}
}
var stroke = dc.makeStroke(finalTheme.marker.stroke),
fill = this._plotFill(finalTheme.marker.fill, dim, offsets);
if(fill && (fill.type === "linear" || fill.type == "radial")){
var color = gradutils.getColor(fill, {x: c.x, y: c.y});
if(stroke){
stroke.color = color;
}
frontMarkers[i] = s.createPath(path).setStroke(stroke).setFill(color);
}else{
frontMarkers[i] = s.createPath(path).setStroke(stroke).setFill(fill);
}
if(this.animate){
this._animateScatter(frontMarkers[i], dim.height - offsets.b);
}
}, this);
if(frontMarkers.length){
run.dyn.stroke = frontMarkers[frontMarkers.length - 1].getStroke();
run.dyn.fill = frontMarkers[frontMarkers.length - 1].getFill();
}
if(events){
var eventSeries = new Array(frontMarkers.length);
arr.forEach(frontMarkers, function(s, i){
var o = {
element: "marker",
index: i,
run: run,
shape: s,
outline: outlineMarkers && outlineMarkers[i] || null,
shadow: shadowMarkers && shadowMarkers[i] || null,
cx: lpoly[i].x,
cy: lpoly[i].y
};
if(typeof run.data[0] == "number"){
o.x = i + 1;
o.y = run.data[i];
}else{
o.x = run.data[i].x;
o.y = run.data[i].y;
}
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.Scatter
},
_animateScatter: function(shape, offset){
fx.animateTransform(lang.delegate({
shape: shape,
duration: 1200,
transform: [
{name: "translate", start: [0, offset], end: [0, 0]},
{name: "scale", start: [0, 0], end: [1, 1]},
{name: "original"}
]
}, this.animate)).play();
}
});
});
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