plotarea.js

dojo-0.4.0-ajax.zip ajax一个应用。在页面上可以直接用标签。此为ajax的框架

/*
	Copyright (c) 2004-2006, The Dojo Foundation
	All Rights Reserved.

	Licensed under the Academic Free License version 2.1 or above OR the
	modified BSD license. For more information on Dojo licensing, see:

		http://dojotoolkit.org/community/licensing.shtml
*/

dojo.provide("dojo.charting.svg.PlotArea");
dojo.require("dojo.lang.common");
dojo.require("dojo.svg");

dojo.extend(dojo.charting.PlotArea, {
	initializePlot: function(plot){
		//	summary
		//	Initialize the plot node for data rendering.
		plot.destroy();
		plot.dataNode = document.createElementNS(dojo.svg.xmlns.svg, "g");
		plot.dataNode.setAttribute("id", plot.getId());
		return plot.dataNode;	//	SVGGElement
	},
	initialize: function(){
		//	summary
		//	Initialize the PlotArea.
	
		this.destroy();	//	kill everything first.
		
		//	start with the background
		this.nodes.main = document.createElement("div");

		this.nodes.area = document.createElementNS(dojo.svg.xmlns.svg, "svg");
		this.nodes.area.setAttribute("id", this.getId());
		this.nodes.area.setAttribute("width", this.size.width);
		this.nodes.area.setAttribute("height", this.size.height);
		this.nodes.main.appendChild(this.nodes.area);

		var area=this.getArea();
		var defs = document.createElementNS(dojo.svg.xmlns.svg, "defs");
		var clip = document.createElementNS(dojo.svg.xmlns.svg, "clipPath");
		clip.setAttribute("id",this.getId()+"-clip");
		var rect = document.createElementNS(dojo.svg.xmlns.svg, "rect");		
		rect.setAttribute("x", area.left);
		rect.setAttribute("y", area.top);
		rect.setAttribute("width", area.right-area.left);
		rect.setAttribute("height", area.bottom-area.top);
		clip.appendChild(rect);
		defs.appendChild(clip);
		this.nodes.area.appendChild(defs);
		
		this.nodes.background = document.createElementNS(dojo.svg.xmlns.svg, "rect");
		this.nodes.background.setAttribute("id", this.getId()+"-background");
		this.nodes.background.setAttribute("width", this.size.width);
		this.nodes.background.setAttribute("height", this.size.height);
		this.nodes.background.setAttribute("fill", "#fff");
		this.nodes.area.appendChild(this.nodes.background);

		this.nodes.plots = document.createElementNS(dojo.svg.xmlns.svg, "g");
		this.nodes.plots.setAttribute("id", this.getId()+"-plots");
		this.nodes.plots.setAttribute("style","clip-path:url(#"+this.getId()+"-clip);");
		this.nodes.area.appendChild(this.nodes.plots);

		for(var i=0; i<this.plots.length; i++){
			this.nodes.plots.appendChild(this.initializePlot(this.plots[i]));
		}

		//	do the axes
		this.nodes.axes = document.createElementNS(dojo.svg.xmlns.svg, "g");
		this.nodes.axes.setAttribute("id", this.getId()+"-axes");
		this.nodes.area.appendChild(this.nodes.axes);
		var axes = this.getAxes();
		for(var p in axes){
			var obj = axes[p];
			this.nodes.axes.appendChild(obj.axis.initialize(this, obj.plot, obj.drawAgainst, obj.plane));
		}
		return this.nodes.main;	//	HTMLDivElement
	}
});