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Struts example source code file (Chart.js)
The Struts Chart.js source code/* 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.widget.vml.Chart"); dojo.require("dojo.widget.HtmlWidget"); dojo.require("dojo.widget.Chart"); dojo.require("dojo.math"); dojo.require("dojo.html.layout"); dojo.require("dojo.gfx.color"); dojo.widget.defineWidget("dojo.widget.vml.Chart", [dojo.widget.HtmlWidget, dojo.widget.Chart], function () { this.templatePath = null; this.templateCssPath = null; this._isInitialize = false; this.hasData = false; this.vectorNode = null; this.plotArea = null; this.dataGroup = null; this.axisGroup = null; this.properties = {height:0, width:0, defaultWidth:600, defaultHeight:400, plotType:null, padding:{top:10, bottom:2, left:60, right:30}, axes:{x:{plotAt:0, label:"", unitLabel:"", unitType:Number, nUnitsToShow:10, range:{min:0, max:200}}, y:{plotAt:0, label:"", unitLabel:"", unitType:Number, nUnitsToShow:10, range:{min:0, max:200}}}}; }, {parseProperties:function (node) { var bRangeX = false; var bRangeY = false; if (node.getAttribute("width")) { this.properties.width = node.getAttribute("width"); } if (node.getAttribute("height")) { this.properties.height = node.getAttribute("height"); } if (node.getAttribute("plotType")) { this.properties.plotType = node.getAttribute("plotType"); } if (node.getAttribute("padding")) { if (node.getAttribute("padding").indexOf(",") > -1) { var p = node.getAttribute("padding").split(","); } else { var p = node.getAttribute("padding").split(" "); } if (p.length == 1) { var pad = parseFloat(p[0]); this.properties.padding.top = pad; this.properties.padding.right = pad; this.properties.padding.bottom = pad; this.properties.padding.left = pad; } else { if (p.length == 2) { var padV = parseFloat(p[0]); var padH = parseFloat(p[1]); this.properties.padding.top = padV; this.properties.padding.right = padH; this.properties.padding.bottom = padV; this.properties.padding.left = padH; } else { if (p.length == 4) { this.properties.padding.top = parseFloat(p[0]); this.properties.padding.right = parseFloat(p[1]); this.properties.padding.bottom = parseFloat(p[2]); this.properties.padding.left = parseFloat(p[3]); } } } } if (node.getAttribute("rangeX")) { var p = node.getAttribute("rangeX"); if (p.indexOf(",") > -1) { p = p.split(","); } else { p = p.split(" "); } this.properties.axes.x.range.min = parseFloat(p[0]); this.properties.axes.x.range.max = parseFloat(p[1]); bRangeX = true; } if (node.getAttribute("rangeY")) { var p = node.getAttribute("rangeY"); if (p.indexOf(",") > -1) { p = p.split(","); } else { p = p.split(" "); } this.properties.axes.y.range.min = parseFloat(p[0]); this.properties.axes.y.range.max = parseFloat(p[1]); bRangeY = true; } return {rangeX:bRangeX, rangeY:bRangeY}; }, setAxesPlot:function (table) { if (table.getAttribute("axisAt")) { var p = table.getAttribute("axisAt"); if (p.indexOf(",") > -1) { p = p.split(","); } else { p = p.split(" "); } if (!isNaN(parseFloat(p[0]))) { this.properties.axes.x.plotAt = parseFloat(p[0]); } else { if (p[0].toLowerCase() == "ymin") { this.properties.axes.x.plotAt = this.properties.axes.y.range.min; } else { if (p[0].toLowerCase() == "ymax") { this.properties.axes.x.plotAt = this.properties.axes.y.range.max; } } } if (!isNaN(parseFloat(p[1]))) { this.properties.axes.y.plotAt = parseFloat(p[1]); } else { if (p[1].toLowerCase() == "xmin") { this.properties.axes.y.plotAt = this.properties.axes.x.range.min; } else { if (p[1].toLowerCase() == "xmax") { this.properties.axes.y.plotAt = this.properties.axes.x.range.max; } } } } else { this.properties.axes.x.plotAt = this.properties.axes.y.range.min; this.properties.axes.y.plotAt = this.properties.axes.x.range.min; } }, drawVectorNode:function () { if (this.vectorNode) { this.destroy(); } this.vectorNode = document.createElement("div"); this.vectorNode.style.width = this.properties.width + "px"; this.vectorNode.style.height = this.properties.height + "px"; this.vectorNode.style.position = "relative"; this.domNode.appendChild(this.vectorNode); }, drawPlotArea:function () { var plotWidth = this.properties.width - this.properties.padding.left - this.properties.padding.right; var plotHeight = this.properties.height - this.properties.padding.top - this.properties.padding.bottom; if (this.plotArea) { this.plotArea.parentNode.removeChild(this.plotArea); this.plotArea = null; } this.plotArea = document.createElement("div"); this.plotArea.style.position = "absolute"; this.plotArea.style.backgroundColor = "#fff"; this.plotArea.style.top = (this.properties.padding.top) - 2 + "px"; this.plotArea.style.left = (this.properties.padding.left - 1) + "px"; this.plotArea.style.width = plotWidth + "px"; this.plotArea.style.height = plotHeight + "px"; this.plotArea.style.clip = "rect(0 " + plotWidth + " " + plotHeight + " 0)"; this.vectorNode.appendChild(this.plotArea); }, drawDataGroup:function () { var plotWidth = this.properties.width - this.properties.padding.left - this.properties.padding.right; var plotHeight = this.properties.height - this.properties.padding.top - this.properties.padding.bottom; if (this.dataGroup) { this.dataGroup.parentNode.removeChild(this.dataGroup); this.dataGroup = null; } this.dataGroup = document.createElement("div"); this.dataGroup.style.position = "absolute"; this.dataGroup.setAttribute("title", "Data Group"); this.dataGroup.style.top = "0px"; this.dataGroup.style.left = "0px"; this.dataGroup.style.width = plotWidth + "px"; this.dataGroup.style.height = plotHeight + "px"; this.plotArea.appendChild(this.dataGroup); }, drawAxes:function () { var plotWidth = this.properties.width - this.properties.padding.left - this.properties.padding.right; var plotHeight = this.properties.height - this.properties.padding.top - this.properties.padding.bottom; if (this.axisGroup) { this.axisGroup.parentNode.removeChild(this.axisGroup); this.axisGroup = null; } this.axisGroup = document.createElement("div"); this.axisGroup.style.position = "absolute"; this.axisGroup.setAttribute("title", "Axis Group"); this.axisGroup.style.top = "0px"; this.axisGroup.style.left = "0px"; this.axisGroup.style.width = plotWidth + "px"; this.axisGroup.style.height = plotHeight + "px"; this.plotArea.appendChild(this.axisGroup); var stroke = 1; var line = document.createElement("v:line"); var y = dojo.widget.vml.Chart.Plotter.getY(this.properties.axes.x.plotAt, this); line.setAttribute("from", "0px," + y + "px"); line.setAttribute("to", plotWidth + "px," + y + "px"); line.style.position = "absolute"; line.style.top = "0px"; line.style.left = "0px"; line.style.antialias = "false"; line.setAttribute("strokecolor", "#666"); line.setAttribute("strokeweight", stroke * 2 + "px"); this.axisGroup.appendChild(line); var line = document.createElement("v:line"); var x = dojo.widget.vml.Chart.Plotter.getX(this.properties.axes.y.plotAt, this); line.setAttribute("from", x + "px,0px"); line.setAttribute("to", x + "px," + plotHeight + "px"); line.style.position = "absolute"; line.style.top = "0px"; line.style.left = "0px"; line.style.antialias = "false"; line.setAttribute("strokecolor", "#666"); line.setAttribute("strokeweight", stroke * 2 + "px"); this.axisGroup.appendChild(line); var size = 10; var t = document.createElement("div"); t.style.position = "absolute"; t.style.top = (this.properties.height - this.properties.padding.bottom) + "px"; t.style.left = this.properties.padding.left + "px"; t.style.fontFamily = "sans-serif"; t.style.fontSize = size + "px"; t.innerHTML = dojo.math.round(parseFloat(this.properties.axes.x.range.min), 2); this.vectorNode.appendChild(t); t = document.createElement("div"); t.style.position = "absolute"; t.style.top = (this.properties.height - this.properties.padding.bottom) + "px"; t.style.left = (this.properties.width - this.properties.padding.right - size) + "px"; t.style.fontFamily = "sans-serif"; t.style.fontSize = size + "px"; t.innerHTML = dojo.math.round(parseFloat(this.properties.axes.x.range.max), 2); this.vectorNode.appendChild(t); t = document.createElement("div"); t.style.position = "absolute"; t.style.top = (size / 2) + "px"; t.style.left = "0px"; t.style.width = this.properties.padding.left + "px"; t.style.textAlign = "right"; t.style.paddingRight = "4px"; t.style.fontFamily = "sans-serif"; t.style.fontSize = size + "px"; t.innerHTML = dojo.math.round(parseFloat(this.properties.axes.y.range.max), 2); this.vectorNode.appendChild(t); t = document.createElement("div"); t.style.position = "absolute"; t.style.top = (this.properties.height - this.properties.padding.bottom - size) + "px"; t.style.left = "0px"; t.style.width = this.properties.padding.left + "px"; t.style.textAlign = "right"; t.style.paddingRight = "4px"; t.style.fontFamily = "sans-serif"; t.style.fontSize = size + "px"; t.innerHTML = dojo.math.round(parseFloat(this.properties.axes.y.range.min), 2); this.vectorNode.appendChild(t); }, init:function () { if (!this.properties.width || !this.properties.height) { var box = dojo.html.getContentBox(this.domNode); if (!this.properties.width) { this.properties.width = (box.width < 32) ? this.properties.defaultWidth : box.width; } if (!this.properties.height) { this.properties.height = (box.height < 32) ? this.properties.defaultHeight : box.height; } } this.drawVectorNode(); this.drawPlotArea(); this.drawDataGroup(); this.drawAxes(); this.assignColors(); this._isInitialized = true; }, destroy:function () { while (this.domNode.childNodes.length > 0) { this.domNode.removeChild(this.domNode.childNodes[0]); } this.vectorNode = this.plotArea = this.dataGroup = this.axisGroup = null; }, render:function () { if (this.dataGroup) { while (this.dataGroup.childNodes.length > 0) { this.dataGroup.removeChild(this.dataGroup.childNodes[0]); } } else { this.init(); } for (var i = 0; i < this.series.length; i++) { dojo.widget.vml.Chart.Plotter.plot(this.series[i], this); } }, postCreate:function () { var table = this.domNode.getElementsByTagName("table")[0]; if (table) { var ranges = this.parseProperties(table); var bRangeX = false; var bRangeY = false; var axisValues = this.parseData(table); if (!bRangeX) { this.properties.axes.x.range = {min:axisValues.x.min, max:axisValues.x.max}; } if (!bRangeY) { this.properties.axes.y.range = {min:axisValues.y.min, max:axisValues.y.max}; } this.setAxesPlot(table); this.domNode.removeChild(table); } if (this.series.length > 0) { this.render(); } }}); dojo.widget.vml.Chart.Plotter = new function () { var self = this; var plotters = {}; var types = dojo.widget.Chart.PlotTypes; this.getX = function (value, chart) { var v = parseFloat(value); var min = chart.properties.axes.x.range.min; var max = chart.properties.axes.x.range.max; var ofst = 0 - min; min += ofst; max += ofst; v += ofst; var xmin = 0; var xmax = chart.properties.width - chart.properties.padding.left - chart.properties.padding.right; var x = (v * ((xmax - xmin) / max)) + xmin; return x; }; this.getY = function (value, chart) { var v = parseFloat(value); var max = chart.properties.axes.y.range.max; var min = chart.properties.axes.y.range.min; var ofst = 0; if (min < 0) { ofst += Math.abs(min); } min += ofst; max += ofst; v += ofst; var ymin = chart.properties.height - chart.properties.padding.top - chart.properties.padding.bottom; var ymax = 0; var y = (((ymin - ymax) / (max - min)) * (max - v)) + ymax; return y; }; this.addPlotter = function (name, func) { plotters[name] = func; }; this.plot = function (series, chart) { if (series.values.length == 0) { return; } if (series.plotType && plotters[series.plotType]) { return plotters[series.plotType](series, chart); } else { if (chart.plotType && plotters[chart.plotType]) { return plotters[chart.plotType](series, chart); } } }; plotters["bar"] = function (series, chart) { var space = 1; var lastW = 0; var ys = []; var yAxis = self.getY(chart.properties.axes.x.plotAt, chart); var yA = yAxis; for (var i = 0; i < series.values.length; i++) { var x = self.getX(series.values[i].x, chart); var w; if (i == series.values.length - 1) { w = lastW; } else { w = self.getX(series.values[i + 1].x, chart) - x - space; lastW = w; } x -= (w / 2); var y = self.getY(series.values[i].value, chart); var h = Math.abs(yA - y); if (parseFloat(series.values[i].value) < chart.properties.axes.x.plotAt) { y = yA; } var bar = document.createElement("v:rect"); bar.style.position = "absolute"; bar.style.top = y + "px"; bar.style.left = x + "px"; bar.style.width = w + "px"; bar.style.height = h + "px"; bar.setAttribute("fillColor", series.color); bar.setAttribute("stroked", "false"); bar.style.antialias = "false"; bar.setAttribute("title", series.label + " (" + i + "): " + series.values[i].value); var fill = document.createElement("v:fill"); fill.setAttribute("opacity", "0.9"); bar.appendChild(fill); chart.dataGroup.appendChild(bar); } }; plotters["line"] = function (series, chart) { var tension = 1.5; var line = document.createElement("v:shape"); line.setAttribute("strokeweight", "2px"); line.setAttribute("strokecolor", series.color); line.setAttribute("fillcolor", "none"); line.setAttribute("filled", "false"); line.setAttribute("title", series.label); line.setAttribute("coordsize", chart.properties.width + "," + chart.properties.height); line.style.position = "absolute"; line.style.top = "0px"; line.style.left = "0px"; line.style.width = chart.properties.width + "px"; line.style.height = chart.properties.height + "px"; var stroke = document.createElement("v:stroke"); stroke.setAttribute("opacity", "0.85"); line.appendChild(stroke); var path = []; for (var i = 0; i < series.values.length; i++) { var x = Math.round(self.getX(series.values[i].x, chart)); var y = Math.round(self.getY(series.values[i].value, chart)); if (i == 0) { path.push("m"); path.push(x + "," + y); } else { var lastx = Math.round(self.getX(series.values[i - 1].x, chart)); var lasty = Math.round(self.getY(series.values[i - 1].value, chart)); var dx = x - lastx; var dy = y - lasty; path.push("c"); var cx = Math.round((x - (tension - 1) * (dx / tension))); path.push(cx + "," + lasty); cx = Math.round((x - (dx / tension))); path.push(cx + "," + y); path.push(x + "," + y); } } line.setAttribute("path", path.join(" ") + " e"); chart.dataGroup.appendChild(line); }; plotters["area"] = function (series, chart) { var tension = 1.5; var line = document.createElement("v:shape"); line.setAttribute("strokeweight", "1px"); line.setAttribute("strokecolor", series.color); line.setAttribute("fillcolor", series.color); line.setAttribute("title", series.label); line.setAttribute("coordsize", chart.properties.width + "," + chart.properties.height); line.style.position = "absolute"; line.style.top = "0px"; line.style.left = "0px"; line.style.width = chart.properties.width + "px"; line.style.height = chart.properties.height + "px"; var stroke = document.createElement("v:stroke"); stroke.setAttribute("opacity", "0.8"); line.appendChild(stroke); var fill = document.createElement("v:fill"); fill.setAttribute("opacity", "0.4"); line.appendChild(fill); var path = []; for (var i = 0; i < series.values.length; i++) { var x = Math.round(self.getX(series.values[i].x, chart)); var y = Math.round(self.getY(series.values[i].value, chart)); if (i == 0) { path.push("m"); path.push(x + "," + y); } else { var lastx = Math.round(self.getX(series.values[i - 1].x, chart)); var lasty = Math.round(self.getY(series.values[i - 1].value, chart)); var dx = x - lastx; var dy = y - lasty; path.push("c"); var cx = Math.round((x - (tension - 1) * (dx / tension))); path.push(cx + "," + lasty); cx = Math.round((x - (dx / tension))); path.push(cx + "," + y); path.push(x + "," + y); } } path.push("l"); path.push(x + "," + self.getY(0, chart)); path.push("l"); path.push(self.getX(0, chart) + "," + self.getY(0, chart)); line.setAttribute("path", path.join(" ") + " x e"); chart.dataGroup.appendChild(line); }; plotters["scatter"] = function (series, chart) { var r = 6; for (var i = 0; i < series.values.length; i++) { var x = self.getX(series.values[i].x, chart); var y = self.getY(series.values[i].value, chart); var mod = r / 2; var point = document.createElement("v:rect"); point.setAttribute("fillcolor", series.color); point.setAttribute("strokecolor", series.color); point.setAttribute("title", series.label + ": " + series.values[i].value); point.style.position = "absolute"; point.style.rotation = "45"; point.style.top = (y - mod) + "px"; point.style.left = (x - mod) + "px"; point.style.width = r + "px"; point.style.height = r + "px"; var fill = document.createElement("v:fill"); fill.setAttribute("opacity", "0.6"); point.appendChild(fill); chart.dataGroup.appendChild(point); } }; plotters["bubble"] = function (series, chart) { var minR = 1; var min = chart.properties.axes.x.range.min; var max = chart.properties.axes.x.range.max; var ofst = 0 - min; min += ofst; max += ofst; var xmin = chart.properties.padding.left; var xmax = chart.properties.width - chart.properties.padding.right; var factor = (max - min) / (xmax - xmin) * 25; for (var i = 0; i < series.values.length; i++) { var size = series.values[i].size; if (isNaN(parseFloat(size))) { size = minR; } var radius = (parseFloat(size) * factor) / 2; var diameter = radius * 2; var cx = self.getX(series.values[i].x, chart); var cy = self.getY(series.values[i].value, chart); var top = cy - radius; var left = cx - radius; var point = document.createElement("v:oval"); point.setAttribute("fillcolor", series.color); point.setAttribute("title", series.label + ": " + series.values[i].value + " (" + size + ")"); point.setAttribute("stroked", "false"); point.style.position = "absolute"; point.style.top = top + "px"; point.style.left = left + "px"; point.style.width = diameter + "px"; point.style.height = diameter + "px"; var fill = document.createElement("v:fill"); fill.setAttribute("opacity", "0.8"); point.appendChild(fill); chart.dataGroup.appendChild(point); } }; }(); Other Struts examples (source code examples)Here is a short list of links related to this Struts Chart.js source code file: |
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