dojox
Version:
Dojo eXtensions, a rollup of many useful sub-projects and varying states of maturity – from very stable and robust, to alpha and experimental. See individual projects contain README files for details.
206 lines (198 loc) • 6.77 kB
JavaScript
define(["dojo/_base/lang", "dojo/_base/array", "dojo/_base/declare", "dojo/has", "./CartesianBase", "./_PlotEvents", "./common",
"dojox/lang/functional", "dojox/lang/utils", "dojox/gfx/fx", "dojox/gfx/gradutils"],
function(lang, arr, declare, has, CartesianBase, _PlotEvents, dc, df, du, fx, gradutils){
return declare("dojox.charting.plot2d.Scatter", [CartesianBase, _PlotEvents], {
// summary:
// A plot object representing a typical scatter chart.
defaultParams: {
shadows: null, // draw shadows
animate: null // animate chart to place
},
optionalParams: {
// theme component
markerStroke: {},
markerOutline: {},
markerShadow: {},
markerFill: {},
markerFont: "",
markerFontColor: "",
styleFunc: null
},
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(lang.mixin(this.opt, this.defaultParams));
du.updateWithObject(this.opt, kwArgs);
du.updateWithPattern(this.opt, kwArgs, this.optionalParams);
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();
var s;
if(this.dirty){
arr.forEach(this.series, dc.purgeGroup);
this._eventSeries = {};
this.cleanGroup();
s = this.getGroup();
df.forEachRev(this.series, function(item){ item.cleanGroup(s); });
}
var t = this.chart.theme, events = this.events();
for(var i = 0; i < this.series.length; 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]), lpoly,
ht = this._hScaler.scaler.getTransformerFromModel(this._hScaler),
vt = this._vScaler.scaler.getTransformerFromModel(this._vScaler);
if(run.hidden){
run.dyn.marker = theme.symbol;
run.dyn.markerFill = theme.marker.fill;
run.dyn.markerStroke = theme.marker.stroke;
continue;
}
s = run.group;
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 value = run.data[i], finalTheme;
if(this.opt.styleFunc || typeof value != "number"){
var tMixin = typeof value != "number" ? [value] : [];
if(this.opt.styleFunc){
tMixin.push(this.opt.styleFunc(value));
}
finalTheme = t.addMixin(theme, "marker", tMixin, true);
}else{
finalTheme = t.post(theme, "marker");
}
var 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 && finalTheme.marker.stroke.width || 0);
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.opt.labels){
var markerBox = frontMarkers[i].getBoundingBox();
this.createLabel(s, value, markerBox, finalTheme);
}
if(this.animate){
this._animateScatter(frontMarkers[i], dim.height - offsets.b);
}
}, this);
if(frontMarkers.length){
run.dyn.marker = theme.symbol;
run.dyn.markerStroke = frontMarkers[frontMarkers.length - 1].getStroke();
run.dyn.markerFill = 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;
// chart mirroring starts
if(has("dojo-bidi")){
this._checkOrientation(this.group, dim, offsets);
}
// chart mirroring ends
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();
}
});
});