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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.Scatter"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
+dojo._hasResource["dojox.charting.plot2d.Scatter"] = true;
+dojo.provide("dojox.charting.plot2d.Scatter");
+
+dojo.require("dojox.charting.plot2d.common");
+dojo.require("dojox.charting.plot2d.Base");
+
+dojo.require("dojox.lang.utils");
+dojo.require("dojox.lang.functional");
+dojo.require("dojox.lang.functional.reversed");
+
+dojo.require("dojox.gfx.gradutils");
+
+
+(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.Scatter", dojox.charting.plot2d.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.Chart2D
+ // 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 = 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;
+ },
+
+ 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){
+ 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, 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 = dojo.map(run.data, function(v, i){
+ return {
+ x: ht(i + 1) + offsets.l,
+ y: dim.height - offsets.b - vt(v)
+ };
+ }, this);
+ }else{
+ lpoly = dojo.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);
+
+ dojo.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 = dojox.gfx.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);
+ dojo.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){
+ dojox.gfx.fx.animateTransform(dojo.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();
+ }
+ });
+})();
+
+}