plotters.js

对java中如何使用Ajax技术

			var tension = 3;
			var area = plotarea.getArea();
			var group = dojo.charting.Plotters._group(plotarea);

			var path=document.createElement("v:shape");
			path.setAttribute("strokeweight", "1px");
			path.setAttribute("strokecolor", data[0].series.color);
			path.setAttribute("fillcolor", data[0].series.color);
			path.setAttribute("coordsize", (area.right-area.left) + "," + (area.bottom-area.top));
			path.style.position="absolute";
			path.style.top="0px";
			path.style.left="0px";
			path.style.width=area.right-area.left+"px";
			path.style.height=area.bottom-area.top+"px";
			var stroke=document.createElement("v:stroke");
			stroke.setAttribute("opacity", "0.8");
			path.appendChild(stroke);
			var fill=document.createElement("v:fill");
			fill.setAttribute("opacity", "0.4");
			path.appendChild(fill);

			var cmd = [];
			var r=3;
			for(var i=0; i<data.length; i++){
				var x = Math.round(plot.axisX.getCoord(data[i].x, plotarea, plot));
				var y = Math.round(plot.axisY.getCoord(data[i].y, plotarea, plot));

				if (i==0){
					cmd.push("m");
					cmd.push(x+","+y);
				}else{
					var lastx = Math.round(plot.axisX.getCoord(data[i-1].x, plotarea, plot));
					var lasty = Math.round(plot.axisY.getCoord(data[i-1].y, plotarea, plot));
					var dx=x-lastx;
					var dy=y-lasty;
					
					cmd.push("c");
					var cx=Math.round((x-(tension-1)*(dx/tension)));
					cmd.push(cx+","+lasty);
					cx=Math.round((x-(dx/tension)));
					cmd.push(cx+","+y);
					cmd.push(x+","+y);
				}

				//	add the circle.
				var c = document.createElement("v:oval");
				c.setAttribute("strokeweight", "1px");
				c.setAttribute("strokecolor", data[i].series.color);
				c.setAttribute("fillcolor", data[i].series.color);
				var str=document.createElement("v:stroke");
				str.setAttribute("opacity","0.8");
				c.appendChild(str);
				str=document.createElement("v:fill");
				str.setAttribute("opacity","0.6");
				c.appendChild(str);
				var s=c.style;
				s.position="absolute";
				s.top=(y-r)+"px";
				s.left=(x-r)+"px";
				s.width=(r*2)+"px";
				s.height=(r*2)+"px";
				group.appendChild(c);
				if(applyTo){ applyTo(c, data[i].src); }
			}
			cmd.push("l");
			cmd.push(x + "," + Math.round(plot.axisY.getCoord(plot.axisX.origin, plotarea, plot)));
			cmd.push("l");
			cmd.push(Math.round(plot.axisX.getCoord(data[0].x, plotarea, plot)) + "," +  Math.round(plot.axisY.getCoord(plot.axisX.origin, plotarea, plot)));
			path.setAttribute("path", cmd.join(" ")+" x e");
			group.appendChild(path);
			return group;	//	HTMLDivElement
		},
		HighLow: function(
			/* array */data, 
			/* dojo.charting.PlotArea */plotarea,
			/* dojo.charting.Plot */plot,
			/* function? */applyTo
		){
			//	summary
			//	Plots the series as a set of high/low bars.
			//	Bindings: x/high/low
			var area = plotarea.getArea();
			var group = dojo.charting.Plotters._group(plotarea);

			var n = data.length;
			var part = ((area.right-area.left)/(plot.axisX.range.upper - plot.axisX.range.lower))/4;
			var w = part*2;

			for(var i=0; i<n; i++){
				var high = data[i].high;
				var low = data[i].low;
				if(low > high){
					var t = low;
					low = high;
					high = t;
				}

				var x = plot.axisX.getCoord(data[i].x, plotarea, plot) - (w/2);
				var y = plot.axisY.getCoord(high, plotarea, plot);
				var h = plot.axisY.getCoord(low, plotarea, plot)-y;

				//	high + low
				var bar=document.createElement("v:rect");
				bar.style.position="absolute";
				bar.style.top=y+1+"px";
				bar.style.left=x+"px";
				bar.style.width=w+"px";
				bar.style.height=h+"px";
				bar.setAttribute("fillColor", data[i].series.color);
				bar.setAttribute("stroked", "false");
				bar.style.antialias="false";
				var fill=document.createElement("v:fill");
				fill.setAttribute("opacity", "0.6");
				bar.appendChild(fill);
				if(applyTo){ applyTo(bar, data[i].src); }
				group.appendChild(bar);
			}
			return group;	//	HTMLDivElement
		},	
		HighLowClose: function(
			/* array */data, 
			/* dojo.charting.PlotArea */plotarea,
			/* dojo.charting.Plot */plot,
			/* function? */applyTo
		){
			//	summary
			//	Plots the series as a set of high/low bars with a close indicator.
			//	Bindings: x/high/low/close
			var area = plotarea.getArea();
			var group = dojo.charting.Plotters._group(plotarea);

			var n = data.length;
			var part = ((area.right-area.left)/(plot.axisX.range.upper - plot.axisX.range.lower))/4;
			var w = part*2;

			for(var i=0; i<n; i++){
				var high = data[i].high;
				var low = data[i].low;
				if(low > high){
					var t = low;
					low = high;
					high = t;
				}
				var c = data[i].close;

				var x = plot.axisX.getCoord(data[i].x, plotarea, plot) - (w/2);
				var y = plot.axisY.getCoord(high, plotarea, plot);
				var h = plot.axisY.getCoord(low, plotarea, plot)-y;
				var close = plot.axisY.getCoord(c, plotarea, plot);

				var g = document.createElement("div");

				//	high + low
				var bar=document.createElement("v:rect");
				bar.style.position="absolute";
				bar.style.top=y+1+"px";
				bar.style.left=x+"px";
				bar.style.width=w+"px";
				bar.style.height=h+"px";
				bar.setAttribute("fillColor", data[i].series.color);
				bar.setAttribute("stroked", "false");
				bar.style.antialias="false";
				var fill=document.createElement("v:fill");
				fill.setAttribute("opacity", "0.6");
				bar.appendChild(fill);
				g.appendChild(bar);

				var line = document.createElement("v:line");
				line.setAttribute("strokecolor", data[i].series.color);
				line.setAttribute("strokeweight", "1px");
				line.setAttribute("from", x+"px,"+close+"px");
				line.setAttribute("to", (x+w+(part*2)-2)+"px,"+close+"px");
				var s=line.style;
				s.position="absolute";
				s.top="0px";
				s.left="0px";
				s.antialias="false";
				var str=document.createElement("v:stroke");
				str.setAttribute("opacity","0.6");
				line.appendChild(str);
				g.appendChild(line);

				if(applyTo){ applyTo(g, data[i].src); }
				group.appendChild(g);
			}
			return group;	//	HTMLDivElement
		},	
		HighLowOpenClose: function(
			/* array */data, 
			/* dojo.charting.PlotArea */plotarea,
			/* dojo.charting.Plot */plot,
			/* function? */applyTo
		){
			//	summary
			//	Plots the series as a set of high/low bars with open and close indicators.
			//	Bindings: x/high/low/open/close
			var area = plotarea.getArea();
			var group = dojo.charting.Plotters._group(plotarea);

			var n = data.length;
			var part = ((area.right-area.left)/(plot.axisX.range.upper - plot.axisX.range.lower))/4;
			var w = part*2;

			for(var i=0; i<n; i++){
				var high = data[i].high;
				var low = data[i].low;
				if(low > high){
					var t = low;
					low = high;
					high = t;
				}
				var o = data[i].open;
				var c = data[i].close;

				var x = plot.axisX.getCoord(data[i].x, plotarea, plot) - (w/2);
				var y = plot.axisY.getCoord(high, plotarea, plot);
				var h = plot.axisY.getCoord(low, plotarea, plot)-y;
				var open = plot.axisY.getCoord(o, plotarea, plot);
				var close = plot.axisY.getCoord(c, plotarea, plot);

				var g = document.createElement("div");

				//	high + low
				var bar=document.createElement("v:rect");
				bar.style.position="absolute";
				bar.style.top=y+1+"px";
				bar.style.left=x+"px";
				bar.style.width=w+"px";
				bar.style.height=h+"px";
				bar.setAttribute("fillColor", data[i].series.color);
				bar.setAttribute("stroked", "false");
				bar.style.antialias="false";
				var fill=document.createElement("v:fill");
				fill.setAttribute("opacity", "0.6");
				bar.appendChild(fill);
				g.appendChild(bar);

				var line = document.createElement("v:line");
				line.setAttribute("strokecolor", data[i].series.color);
				line.setAttribute("strokeweight", "1px");
				line.setAttribute("from", (x-(part*2))+"px,"+open+"px");
				line.setAttribute("to", (x+w-2)+"px,"+open+"px");
				var s=line.style;
				s.position="absolute";
				s.top="0px";
				s.left="0px";
				s.antialias="false";
				var str=document.createElement("v:stroke");
				str.setAttribute("opacity","0.6");
				line.appendChild(str);
				g.appendChild(line);
				
				var line = document.createElement("v:line");
				line.setAttribute("strokecolor", data[i].series.color);
				line.setAttribute("strokeweight", "1px");
				line.setAttribute("from", x+"px,"+close+"px");
				line.setAttribute("to", (x+w+(part*2)-2)+"px,"+close+"px");
				var s=line.style;
				s.position="absolute";
				s.top="0px";
				s.left="0px";
				s.antialias="false";
				var str=document.createElement("v:stroke");
				str.setAttribute("opacity","0.6");
				line.appendChild(str);
				g.appendChild(line);

				if(applyTo){ applyTo(g, data[i].src); }
				group.appendChild(g);
			}
			return group;	//	HTMLDivElement
		},	
		Scatter: function(
			/* array */data, 
			/* dojo.charting.PlotArea */plotarea,
			/* dojo.charting.Plot */plot,
			/* function? */applyTo
		){
			//	summary
			//	Plots the series as a set of points.
			//	Bindings: x/y
			var r=6;
			var mod=r/2;

			var area = plotarea.getArea();
			var group = dojo.charting.Plotters._group(plotarea);

			for(var i=0; i<data.length; i++){
				var x = Math.round(plot.axisX.getCoord(data[i].x, plotarea, plot));
				var y = Math.round(plot.axisY.getCoord(data[i].y, plotarea, plot));

				var point = document.createElement("v:rect");
				point.setAttribute("strokecolor", data[i].series.color);
				point.setAttribute("fillcolor", data[i].series.color);
				var fill=document.createElement("v:fill");
				fill.setAttribute("opacity","0.6");
				point.appendChild(fill);

				var s=point.style;
				s.position="absolute";
				s.rotation="45";
				s.top=(y-mod)+"px";
				s.left=(x-mod)+"px";
				s.width=r+"px";
				s.height=r+"px";
				group.appendChild(point);
				if(applyTo){ applyTo(point, data[i].src); }
			}
			return group;	//	HTMLDivElement
		},
		Bubble: function(
			/* array */data, 
			/* dojo.charting.PlotArea */plotarea,
			/* dojo.charting.Plot */plot,
			/* function? */applyTo
		){
			//	summary
			//	Plots the series as a set of points with a size factor.
			//	Bindings: x/y/size
			var sizeFactor=1;
			var area = plotarea.getArea();
			var group = dojo.charting.Plotters._group(plotarea);

			for(var i=0; i<data.length; i++){
				var x = Math.round(plot.axisX.getCoord(data[i].x, plotarea, plot));
				var y = Math.round(plot.axisY.getCoord(data[i].y, plotarea, plot));
				if(i==0){
					//	figure out the size factor, start with the axis with the greater range.
					var raw = data[i].size;
					var dy = plot.axisY.getCoord(data[i].y + raw, plotarea, plot)-y;
					sizeFactor = dy/raw;
				}
				if(sizeFactor<1) { sizeFactor = 1; }
				var r = (data[i].size/2)*sizeFactor;

				var point = document.createElement("v:oval");
				point.setAttribute("strokecolor", data[i].series.color);
				point.setAttribute("fillcolor", data[i].series.color);
				var fill=document.createElement("v:fill");
				fill.setAttribute("opacity","0.6");
				point.appendChild(fill);

				var s=point.style;
				s.position="absolute";
				s.rotation="45";
				s.top=(y-r)+"px";
				s.left=(x-r)+"px";
				s.width=(r*2)+"px";
				s.height=(r*2)+"px";
				group.appendChild(point);
				if(applyTo){ applyTo(point, data[i].src); }
			}
			return group;	//	HTMLDivElement
		}
	});
	dojo.charting.Plotters["Default"] = dojo.charting.Plotters.Line;
}