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+/**
+ * Class: ProtoChart
+ * Version: v0.5 beta
+ *
+ * ProtoChart is a charting lib on top of Prototype.
+ * This library is heavily motivated by excellent work done by:
+ * * Flot <http://code.google.com/p/flot/>
+ * * Flotr <http://solutoire.com/flotr/>
+ *
+ * Complete examples can be found at: <http://www.deensoft.com/lab/protochart>
+ */
+
+/**
+ * Events:
+ * ProtoChart:mousemove - Fired when mouse is moved over the chart
+ * ProtoChart:plotclick - Fired when graph is clicked
+ * ProtoChart:dataclick - Fired when graph is clicked AND the click is on a data point
+ * ProtoChart:selected - Fired when certain region on the graph is selected
+ * ProtoChart:hit - Fired when mouse is moved near or over certain data point on the graph
+ */
+
+
+if(!Proto) var Proto = {};
+
+Proto.Chart = Class.create({
+ /**
+ * Function:
+ * {Object} elem
+ * {Object} data
+ * {Object} options
+ */
+ initialize: function(elem, data, options)
+ {
+ options = options || {};
+ this.graphData = [];
+ /**
+ * Property: options
+ *
+ * Description: Various options can be set. More details in description.
+ *
+ * colors:
+ * {Array} - pass in a array which contains strings of colors you want to use. Default has 6 color set.
+ *
+ * legend:
+ * {BOOL} - show - if you want to show the legend. Default is false
+ * {integer} - noColumns - Number of columns for the legend. Default is 1
+ * {function} - labelFormatter - A function that returns a string. The function is called with a string and is expected to return a string. Default = null
+ * {string} - labelBoxBorderColor - border color for the little label boxes. Default #CCC
+ * {HTMLElem} - container - an HTML id or HTML element where the legend should be rendered. If left null means to put the legend on top of the Chart
+ * {string} - position - position for the legend on the Chart. Default value 'ne'
+ * {integer} - margin - default valud of 5
+ * {string} - backgroundColor - default to null (which means auto-detect)
+ * {float} - backgroundOpacity - leave it 0 to avoid background
+ *
+ * xaxis (yaxis) options:
+ * {string} - mode - default is null but you can pass a string "time" to indicate time series
+ * {integer} - min
+ * {integer} - max
+ * {float} - autoscaleMargin - in % to add if auto-setting min/max
+ * {mixed} - ticks - either [1, 3] or [[1, "a"], 3] or a function which gets axis info and returns ticks
+ * {function} - tickFormatter - A function that returns a string as a tick label. Default is null
+ * {float} - tickDecimals
+ * {integer} - tickSize
+ * {integer} - minTickSize
+ * {array} - monthNames
+ * {string} - timeformat
+ *
+ * Points / Lines / Bars options:
+ * {bool} - show, default is false
+ * {integer} - radius: default is 3
+ * {integer} - lineWidth : default is 2
+ * {bool} - fill : default is true
+ * {string} - fillColor: default is #ffffff
+ *
+ * Grid options:
+ * {string} - color
+ * {string} - backgroundColor - defualt is *null*
+ * {string} - tickColor - default is *#dddddd*
+ * {integer} - labelMargin - should be in pixels default is 3
+ * {integer} - borderWidth - default *1*
+ * {bool} - clickable - default *null* - pass in TRUE if you wish to monitor click events
+ * {mixed} - coloredAreas - default *null* - pass in mixed object eg. {x1, x2}
+ * {string} - coloredAreasColor - default *#f4f4f4*
+ * {bool} - drawXAxis - default *true*
+ * {bool} - drawYAxis - default *true*
+ *
+ * selection options:
+ * {string} - mode : either "x", "y" or "xy"
+ * {string} - color : string
+ */
+ this.options = this.merge(options,{
+ colors: ["#edc240", "#00A8F0", "#C0D800", "#cb4b4b", "#4da74d", "#9440ed"],
+ legend: {
+ show: false,
+ noColumns: 1,
+ labelFormatter: null,
+ labelBoxBorderColor: "#ccc",
+ container: null,
+ position: "ne",
+ margin: 5,
+ backgroundColor: null,
+ backgroundOpacity: 0.85
+ },
+ xaxis: {
+ mode: null,
+ min: null,
+ max: null,
+ autoscaleMargin: null,
+ ticks: null,
+ tickFormatter: null,
+ tickDecimals: null,
+ tickSize: null,
+ minTickSize: null,
+ monthNames: null,
+ timeformat: null
+ },
+ yaxis: {
+ mode: null,
+ min: null,
+ max: null,
+ ticks: null,
+ tickFormatter: null,
+ tickDecimals: null,
+ tickSize: null,
+ minTickSize: null,
+ monthNames: null,
+ timeformat: null,
+ autoscaleMargin: 0.02
+ },
+
+ points: {
+ show: false,
+ radius: 3,
+ lineWidth: 2,
+ fill: true,
+ fillColor: "#ffffff"
+ },
+ lines: {
+ show: false,
+ lineWidth: 2,
+ fill: false,
+ fillColor: null
+ },
+ bars: {
+ show: false,
+ lineWidth: 2,
+ barWidth: 1,
+ fill: true,
+ fillColor: null,
+ showShadow: false,
+ fillOpacity: 0.4,
+ autoScale: true
+ },
+ pies: {
+ show: false,
+ radius: 50,
+ borderWidth: 1,
+ fill: true,
+ fillColor: null,
+ fillOpacity: 0.90,
+ labelWidth: 30,
+ fontSize: 11,
+ autoScale: true
+ },
+ grid: {
+ color: "#545454",
+ backgroundColor: null,
+ tickColor: "#dddddd",
+ labelMargin: 3,
+ borderWidth: 1,
+ clickable: null,
+ coloredAreas: null,
+ coloredAreasColor: "#f4f4f4",
+ drawXAxis: true,
+ drawYAxis: true
+ },
+ mouse: {
+ track: false,
+ position: 'se',
+ fixedPosition: true,
+ clsName: 'mouseValHolder',
+ trackFormatter: this.defaultTrackFormatter,
+ margin: 3,
+ color: '#ff3f19',
+ trackDecimals: 1,
+ sensibility: 2,
+ radius: 5,
+ lineColor: '#cb4b4b'
+ },
+ selection: {
+ mode: null,
+ color: "#97CBFF"
+ },
+ allowDataClick: true,
+ makeRandomColor: false,
+ shadowSize: 4
+ });
+
+ /*
+ * Local variables.
+ */
+ this.canvas = null;
+ this.overlay = null;
+ this.eventHolder = null;
+ this.context = null;
+ this.overlayContext = null;
+
+ this.domObj = $(elem);
+
+ this.xaxis = {};
+ this.yaxis = {};
+ this.chartOffset = {left: 0, right: 0, top: 0, bottom: 0};
+ this.yLabelMaxWidth = 0;
+ this.yLabelMaxHeight = 0;
+ this.xLabelBoxWidth = 0;
+ this.canvasWidth = 0;
+ this.canvasHeight = 0;
+ this.chartWidth = 0;
+ this.chartHeight = 0;
+ this.hozScale = 0;
+ this.vertScale = 0;
+ this.workarounds = {};
+
+ this.domObj = $(elem);
+
+ this.barDataRange = [];
+
+ this.lastMousePos = { pageX: null, pageY: null };
+ this.selection = { first: { x: -1, y: -1}, second: { x: -1, y: -1} };
+ this.prevSelection = null;
+ this.selectionInterval = null;
+ this.ignoreClick = false;
+ this.prevHit = null;
+
+ if(this.options.makeRandomColor)
+ this.options.color = this.makeRandomColor(this.options.colors);
+
+ this.setData(data);
+ this.constructCanvas();
+ this.setupGrid();
+ this.draw();
+ },
+ /**
+ * Private function internally used.
+ */
+ merge: function(src, dest)
+ {
+ var result = dest || {};
+ for(var i in src){
+ result[i] = (typeof(src[i]) == 'object' && !(src[i].constructor == Array || src[i].constructor == RegExp)) ? this.merge(src[i], dest[i]) : result[i] = src[i];
+ }
+ return result;
+ },
+ /**
+ * Function: setData
+ * {Object} data
+ *
+ * Description:
+ * Sets datasoruces properly then sets the Bar Width accordingly, then copies the default data options and then processes the graph data
+ *
+ * Returns: none
+ *
+ */
+ setData: function(data)
+ {
+ this.graphData = this.parseData(data);
+ this.setBarWidth();
+ this.copyGraphDataOptions();
+ this.processGraphData();
+ },
+ /**
+ * Function: parseData
+ * {Object} data
+ *
+ * Return:
+ * {Object} result
+ *
+ * Description:
+ * Takes the provided data object and converts it into generic data that we can understand. User can pass in data in 3 different ways:
+ * - [d1, d2]
+ * - [{data: d1, label: "data1"}, {data: d2, label: "data2"}]
+ * - [d1, {data: d1, label: "data1"}]
+ *
+ * This function parses these senarios and makes it readable
+ */
+ parseData: function(data)
+ {
+ var res = [];
+ data.each(function(d){
+ var s;
+ if(d.data) {
+ s = {};
+ for(var v in d) {
+ s[v] = d[v];
+ }
+ }
+ else {
+ s = {data: d};
+ }
+ res.push(s);
+ }.bind(this));
+ return res;
+ },
+ /**
+ * function: makeRandomColor
+ * {Object} colorSet
+ *
+ * Return:
+ * {Array} result - array containing random colors
+ */
+ makeRandomColor: function(colorSet)
+ {
+ var randNum = Math.floor(Math.random() * colorSet.length);
+ var randArr = [];
+ var newArr = [];
+ randArr.push(randNum);
+
+ while(randArr.length < colorSet.length)
+ {
+ var tempNum = Math.floor(Math.random() * colorSet.length);
+
+ while(checkExisted(tempNum, randArr))
+ tempNum = Math.floor(Math.random() * colorSet.length);
+
+ randArr.push(tempNum);
+ }
+
+ randArr.each(function(ra){
+ newArr.push(colorSet[ra]);
+
+ }.bind(this));
+ return newArr;
+ },
+ /**
+ * function: checkExisted
+ * {Object} needle
+ * {Object} haystack
+ *
+ * return:
+ * {bool} existed - true if it finds needle in the haystack
+ */
+ checkExisted: function(needle, haystack)
+ {
+ var existed = false;
+ haystack.each(function(aNeedle){
+ if(aNeedle == needle) {
+ existed = true;
+ throw $break;
+ }
+ }.bind(this));
+ return existed;
+ },
+ /**
+ * function: setBarWidth
+ *
+ * Description: sets the bar width for Bar Graph, you should enable *autoScale* property for bar graph
+ */
+ setBarWidth: function()
+ {
+ if(this.options.bars.show && this.options.bars.autoScale)
+ {
+ this.options.bars.barWidth = 1 / this.graphData.length / 1.2;
+ }
+ },
+ /**
+ * Function: copyGraphDataOptions
+ *
+ * Description: Private function that goes through each graph data (series) and assigned the graph
+ * properties to it.
+ */
+ copyGraphDataOptions: function()
+ {
+ var i, neededColors = this.graphData.length, usedColors = [], assignedColors = [];
+
+ this.graphData.each(function(gd){
+ var sc = gd.color;
+ if(sc) {
+ --neededColors;
+ if(Object.isNumber(sc)) {
+ assignedColors.push(sc);
+ }
+ else {
+ usedColors.push(this.parseColor(sc));
+ }
+ }
+ }.bind(this));
+
+
+ assignedColors.each(function(ac){
+ neededColors = Math.max(neededColors, ac + 1);
+ });
+
+ var colors = [];
+ var variation = 0;
+ i = 0;
+ while (colors.length < neededColors) {
+ var c;
+ if (this.options.colors.length == i) {
+ c = new Proto.Color(100, 100, 100);
+ }
+ else {
+ c = this.parseColor(this.options.colors[i]);
+ }
+
+ var sign = variation % 2 == 1 ? -1 : 1;
+ var factor = 1 + sign * Math.ceil(variation / 2) * 0.2;
+ c.scale(factor, factor, factor);
+
+ colors.push(c);
+
+ ++i;
+ if (i >= this.options.colors.length) {
+ i = 0;
+ ++variation;
+ }
+ }
+
+ var colorIndex = 0, s;
+
+ this.graphData.each(function(gd){
+ if(gd.color == null)
+ {
+ gd.color = colors[colorIndex].toString();
+ ++colorIndex;
+ }
+ else if(Object.isNumber(gd.color)) {
+ gd.color = colors[gd.color].toString();
+ }
+
+ gd.lines = Object.extend(Object.clone(this.options.lines), gd.lines);
+ gd.points = Object.extend(Object.clone(this.options.points), gd.points);
+ gd.bars = Object.extend(Object.clone(this.options.bars), gd.bars);
+ gd.mouse = Object.extend(Object.clone(this.options.mouse), gd.mouse);
+ if (gd.shadowSize == null) {
+ gd.shadowSize = this.options.shadowSize;
+ }
+ }.bind(this));
+
+ },
+ /**
+ * Function: processGraphData
+ *
+ * Description: processes graph data, setup xaxis and yaxis min and max points.
+ */
+ processGraphData: function() {
+
+ this.xaxis.datamin = this.yaxis.datamin = Number.MAX_VALUE;
+ this.xaxis.datamax = this.yaxis.datamax = Number.MIN_VALUE;
+
+ this.graphData.each(function(gd) {
+ var data = gd.data;
+ data.each(function(d){
+ if(d == null) {
+ return;
+ }
+
+ var x = d[0], y = d[1];
+ if(!x || !y || isNaN(x = +x) || isNaN(y = +y)) {
+ d = null;
+ return;
+ }
+
+ if (x < this.xaxis.datamin)
+ this.xaxis.datamin = x;
+ if (x > this.xaxis.datamax)
+ this.xaxis.datamax = x;
+ if (y < this.yaxis.datamin)
+ this.yaxis.datamin = y;
+ if (y > this.yaxis.datamax)
+ this.yaxis.datamax = y;
+ }.bind(this));
+ }.bind(this));
+
+
+ if (this.xaxis.datamin == Number.MAX_VALUE)
+ this.xaxis.datamin = 0;
+ if (this.yaxis.datamin == Number.MAX_VALUE)
+ this.yaxis.datamin = 0;
+ if (this.xaxis.datamax == Number.MIN_VALUE)
+ this.xaxis.datamax = 1;
+ if (this.yaxis.datamax == Number.MIN_VALUE)
+ this.yaxis.datamax = 1;
+ },
+ /**
+ * Function: constructCanvas
+ *
+ * Description: constructs the main canvas for drawing. It replicates the HTML elem (usually DIV) passed
+ * in via constructor. If there is no height/width assigned to the HTML elem then we take a default size
+ * of 400px (width) and 300px (height)
+ */
+ constructCanvas: function() {
+
+ this.canvasWidth = this.domObj.getWidth();
+ this.canvasHeight = this.domObj.getHeight();
+ this.domObj.update(""); // clear target
+ this.domObj.setStyle({
+ "position": "relative"
+ });
+
+ if (this.canvasWidth <= 0) {
+ this.canvasWdith = 400;
+ }
+ if(this.canvasHeight <= 0) {
+ this.canvasHeight = 300;
+ }
+
+ this.canvas = (Prototype.Browser.IE) ? document.createElement("canvas") : new Element("CANVAS", {'width': this.canvasWidth, 'height': this.canvasHeight});
+ Element.extend(this.canvas);
+ this.canvas.style.width = this.canvasWidth + "px";
+ this.canvas.style.height = this.canvasHeight + "px";
+
+ this.domObj.appendChild(this.canvas);
+
+ if (Prototype.Browser.IE) // excanvas hack
+ {
+ this.canvas = $(window.G_vmlCanvasManager.initElement(this.canvas));
+ }
+ this.canvas = $(this.canvas);
+
+ this.context = this.canvas.getContext("2d");
+
+ this.overlay = (Prototype.Browser.IE) ? document.createElement("canvas") : new Element("CANVAS", {'width': this.canvasWidth, 'height': this.canvasHeight});
+ Element.extend(this.overlay);
+ this.overlay.style.width = this.canvasWidth + "px";
+ this.overlay.style.height = this.canvasHeight + "px";
+ this.overlay.style.position = "absolute";
+ this.overlay.style.left = "0px";
+ this.overlay.style.right = "0px";
+
+ this.overlay.setStyle({
+ 'position': 'absolute',
+ 'left': '0px',
+ 'right': '0px'
+ });
+ this.domObj.appendChild(this.overlay);
+
+ if (Prototype.Browser.IE) {
+ this.overlay = $(window.G_vmlCanvasManager.initElement(this.overlay));
+ }
+
+ this.overlay = $(this.overlay);
+ this.overlayContext = this.overlay.getContext("2d");
+
+ if(this.options.selection.mode)
+ {
+ this.overlay.observe('mousedown', this.onMouseDown.bind(this));
+ this.overlay.observe('mousemove', this.onMouseMove.bind(this));
+ }
+ if(this.options.grid.clickable) {
+ this.overlay.observe('click', this.onClick.bind(this));
+ }
+ if(this.options.mouse.track)
+ {
+ this.overlay.observe('mousemove', this.onMouseMove.bind(this));
+ }
+ },
+ /**
+ * function: setupGrid
+ *
+ * Description: a container function that does a few interesting things.
+ *
+ * 1. calls <extendXRangeIfNeededByBar> function which makes sure that our axis are expanded if needed
+ *
+ * 2. calls <setRange> function providing xaxis options which fixes the ranges according to data points
+ *
+ * 3. calls <prepareTickGeneration> function for xaxis which generates ticks according to options provided by user
+ *
+ * 4. calls <setTicks> function for xaxis that sets the ticks
+ *
+ * similar sequence is called for y-axis.
+ *
+ * At the end if this is a pie chart than we insert Labels (around the pie chart) via <insertLabels> and we also call <insertLegend>
+ */
+ setupGrid: function()
+ {
+ if(this.options.bars.show)
+ {
+ this.xaxis.max += 0.5;
+ this.xaxis.min -= 0.5;
+ }
+ //x-axis
+ this.extendXRangeIfNeededByBar();
+ this.setRange(this.xaxis, this.options.xaxis);
+ this.prepareTickGeneration(this.xaxis, this.options.xaxis);
+ this.setTicks(this.xaxis, this.options.xaxis);
+
+
+ //y-axis
+ this.setRange(this.yaxis, this.options.yaxis);
+ this.prepareTickGeneration(this.yaxis, this.options.yaxis);
+ this.setTicks(this.yaxis, this.options.yaxis);
+ this.setSpacing();
+
+ if(!this.options.pies.show)
+ {
+ this.insertLabels();
+ }
+ this.insertLegend();
+ },
+ /**
+ * function: setRange
+ *
+ * parameters:
+ * {Object} axis
+ * {Object} axisOptions
+ */
+ setRange: function(axis, axisOptions) {
+ var min = axisOptions.min != null ? axisOptions.min : axis.datamin;
+ var max = axisOptions.max != null ? axisOptions.max : axis.datamax;
+
+ if (max - min == 0.0) {
+ // degenerate case
+ var widen;
+ if (max == 0.0)
+ widen = 1.0;
+ else
+ widen = 0.01;
+
+ min -= widen;
+ max += widen;
+ }
+ else {
+ // consider autoscaling
+ var margin = axisOptions.autoscaleMargin;
+ if (margin != null) {
+ if (axisOptions.min == null) {
+ min -= (max - min) * margin;
+ // make sure we don't go below zero if all values
+ // are positive
+ if (min < 0 && axis.datamin >= 0)
+ min = 0;
+ }
+ if (axisOptions.max == null) {
+ max += (max - min) * margin;
+ if (max > 0 && axis.datamax <= 0)
+ max = 0;
+ }
+ }
+ }
+ axis.min = min;
+ axis.max = max;
+ },
+ /**
+ * function: prepareTickGeneration
+ *
+ * Parameters:
+ * {Object} axis
+ * {Object} axisOptions
+ */
+ prepareTickGeneration: function(axis, axisOptions) {
+ // estimate number of ticks
+ var noTicks;
+ if (Object.isNumber(axisOptions.ticks) && axisOptions.ticks > 0)
+ noTicks = axisOptions.ticks;
+ else if (axis == this.xaxis)
+ noTicks = this.canvasWidth / 100;
+ else
+ noTicks = this.canvasHeight / 60;
+
+ var delta = (axis.max - axis.min) / noTicks;
+ var size, generator, unit, formatter, i, magn, norm;
+
+ if (axisOptions.mode == "time") {
+ function formatDate(d, fmt, monthNames) {
+ var leftPad = function(n) {
+ n = "" + n;
+ return n.length == 1 ? "0" + n : n;
+ };
+
+ var r = [];
+ var escape = false;
+ if (monthNames == null)
+ monthNames = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
+ for (var i = 0; i < fmt.length; ++i) {
+ var c = fmt.charAt(i);
+
+ if (escape) {
+ switch (c) {
+ case 'h': c = "" + d.getHours(); break;
+ case 'H': c = leftPad(d.getHours()); break;
+ case 'M': c = leftPad(d.getMinutes()); break;
+ case 'S': c = leftPad(d.getSeconds()); break;
+ case 'd': c = "" + d.getDate(); break;
+ case 'm': c = "" + (d.getMonth() + 1); break;
+ case 'y': c = "" + d.getFullYear(); break;
+ case 'b': c = "" + monthNames[d.getMonth()]; break;
+ }
+ r.push(c);
+ escape = false;
+ }
+ else {
+ if (c == "%")
+ escape = true;
+ else
+ r.push(c);
+ }
+ }
+ return r.join("");
+ }
+
+
+ // map of app. size of time units in milliseconds
+ var timeUnitSize = {
+ "second": 1000,
+ "minute": 60 * 1000,
+ "hour": 60 * 60 * 1000,
+ "day": 24 * 60 * 60 * 1000,
+ "month": 30 * 24 * 60 * 60 * 1000,
+ "year": 365.2425 * 24 * 60 * 60 * 1000
+ };
+
+
+ // the allowed tick sizes, after 1 year we use
+ // an integer algorithm
+ var spec = [
+ [1, "second"], [2, "second"], [5, "second"], [10, "second"],
+ [30, "second"],
+ [1, "minute"], [2, "minute"], [5, "minute"], [10, "minute"],
+ [30, "minute"],
+ [1, "hour"], [2, "hour"], [4, "hour"],
+ [8, "hour"], [12, "hour"],
+ [1, "day"], [2, "day"], [3, "day"],
+ [0.25, "month"], [0.5, "month"], [1, "month"],
+ [2, "month"], [3, "month"], [6, "month"],
+ [1, "year"]
+ ];
+
+ var minSize = 0;
+ if (axisOptions.minTickSize != null) {
+ if (typeof axisOptions.tickSize == "number")
+ minSize = axisOptions.tickSize;
+ else
+ minSize = axisOptions.minTickSize[0] * timeUnitSize[axisOptions.minTickSize[1]];
+ }
+
+ for (i = 0; i < spec.length - 1; ++i) {
+ if (delta < (spec[i][0] * timeUnitSize[spec[i][1]] + spec[i + 1][0] * timeUnitSize[spec[i + 1][1]]) / 2 && spec[i][0] * timeUnitSize[spec[i][1]] >= minSize) {
+ break;
+ }
+ }
+
+ size = spec[i][0];
+ unit = spec[i][1];
+
+ // special-case the possibility of several years
+ if (unit == "year") {
+ magn = Math.pow(10, Math.floor(Math.log(delta / timeUnitSize.year) / Math.LN10));
+ norm = (delta / timeUnitSize.year) / magn;
+ if (norm < 1.5)
+ size = 1;
+ else if (norm < 3)
+ size = 2;
+ else if (norm < 7.5)
+ size = 5;
+ else
+ size = 10;
+
+ size *= magn;
+ }
+
+ if (axisOptions.tickSize) {
+ size = axisOptions.tickSize[0];
+ unit = axisOptions.tickSize[1];
+ }
+
+ var floorInBase = this.floorInBase; //gives us a reference to a global function..
+
+ generator = function(axis) {
+ var ticks = [],
+ tickSize = axis.tickSize[0], unit = axis.tickSize[1],
+ d = new Date(axis.min);
+
+ var step = tickSize * timeUnitSize[unit];
+
+
+
+ if (unit == "second")
+ d.setSeconds(floorInBase(d.getSeconds(), tickSize));
+ if (unit == "minute")
+ d.setMinutes(floorInBase(d.getMinutes(), tickSize));
+ if (unit == "hour")
+ d.setHours(floorInBase(d.getHours(), tickSize));
+ if (unit == "month")
+ d.setMonth(floorInBase(d.getMonth(), tickSize));
+ if (unit == "year")
+ d.setFullYear(floorInBase(d.getFullYear(), tickSize));
+
+ // reset smaller components
+ d.setMilliseconds(0);
+ if (step >= timeUnitSize.minute)
+ d.setSeconds(0);
+ if (step >= timeUnitSize.hour)
+ d.setMinutes(0);
+ if (step >= timeUnitSize.day)
+ d.setHours(0);
+ if (step >= timeUnitSize.day * 4)
+ d.setDate(1);
+ if (step >= timeUnitSize.year)
+ d.setMonth(0);
+
+
+ var carry = 0, v;
+ do {
+ v = d.getTime();
+ ticks.push({ v: v, label: axis.tickFormatter(v, axis) });
+ if (unit == "month") {
+ if (tickSize < 1) {
+ d.setDate(1);
+ var start = d.getTime();
+ d.setMonth(d.getMonth() + 1);
+ var end = d.getTime();
+ d.setTime(v + carry * timeUnitSize.hour + (end - start) * tickSize);
+ carry = d.getHours();
+ d.setHours(0);
+ }
+ else
+ d.setMonth(d.getMonth() + tickSize);
+ }
+ else if (unit == "year") {
+ d.setFullYear(d.getFullYear() + tickSize);
+ }
+ else
+ d.setTime(v + step);
+ } while (v < axis.max);
+
+ return ticks;
+ };
+
+ formatter = function (v, axis) {
+ var d = new Date(v);
+
+ // first check global format
+ if (axisOptions.timeformat != null)
+ return formatDate(d, axisOptions.timeformat, axisOptions.monthNames);
+
+ var t = axis.tickSize[0] * timeUnitSize[axis.tickSize[1]];
+ var span = axis.max - axis.min;
+
+ if (t < timeUnitSize.minute)
+ fmt = "%h:%M:%S";
+ else if (t < timeUnitSize.day) {
+ if (span < 2 * timeUnitSize.day)
+ fmt = "%h:%M";
+ else
+ fmt = "%b %d %h:%M";
+ }
+ else if (t < timeUnitSize.month)
+ fmt = "%b %d";
+ else if (t < timeUnitSize.year) {
+ if (span < timeUnitSize.year)
+ fmt = "%b";
+ else
+ fmt = "%b %y";
+ }
+ else
+ fmt = "%y";
+
+ return formatDate(d, fmt, axisOptions.monthNames);
+ };
+ }
+ else {
+ // pretty rounding of base-10 numbers
+ var maxDec = axisOptions.tickDecimals;
+ var dec = -Math.floor(Math.log(delta) / Math.LN10);
+ if (maxDec != null && dec > maxDec)
+ dec = maxDec;
+
+ magn = Math.pow(10, -dec);
+ norm = delta / magn; // norm is between 1.0 and 10.0
+
+ if (norm < 1.5)
+ size = 1;
+ else if (norm < 3) {
+ size = 2;
+ // special case for 2.5, requires an extra decimal
+ if (norm > 2.25 && (maxDec == null || dec + 1 <= maxDec)) {
+ size = 2.5;
+ ++dec;
+ }
+ }
+ else if (norm < 7.5)
+ size = 5;
+ else
+ size = 10;
+
+ size *= magn;
+
+ if (axisOptions.minTickSize != null && size < axisOptions.minTickSize)
+ size = axisOptions.minTickSize;
+
+ if (axisOptions.tickSize != null)
+ size = axisOptions.tickSize;
+
+ axis.tickDecimals = Math.max(0, (maxDec != null) ? maxDec : dec);
+
+ var floorInBase = this.floorInBase;
+
+ generator = function (axis) {
+ var ticks = [];
+ var start = floorInBase(axis.min, axis.tickSize);
+ // then spew out all possible ticks
+ var i = 0, v;
+ do {
+ v = start + i * axis.tickSize;
+ ticks.push({ v: v, label: axis.tickFormatter(v, axis) });
+ ++i;
+ } while (v < axis.max);
+ return ticks;
+ };
+
+ formatter = function (v, axis) {
+ if(v) {
+ return v.toFixed(axis.tickDecimals);
+ }
+ return 0;
+ };
+ }
+
+ axis.tickSize = unit ? [size, unit] : size;
+ axis.tickGenerator = generator;
+ if (Object.isFunction(axisOptions.tickFormatter))
+ axis.tickFormatter = function (v, axis) { return "" + axisOptions.tickFormatter(v, axis); };
+ else
+ axis.tickFormatter = formatter;
+ },
+ /**
+ * function: extendXRangeIfNeededByBar
+ */
+ extendXRangeIfNeededByBar: function() {
+
+ if (this.options.xaxis.max == null) {
+ // great, we're autoscaling, check if we might need a bump
+ var newmax = this.xaxis.max;
+ this.graphData.each(function(gd){
+ if(gd.bars.show && gd.bars.barWidth + this.xaxis.datamax > newmax)
+ {
+ newmax = this.xaxis.datamax + gd.bars.barWidth;
+ }
+ }.bind(this));
+ this.xaxis.nax = newmax;
+
+ }
+ },
+ /**
+ * function: setTicks
+ *
+ * parameters:
+ * {Object} axis
+ * {Object} axisOptions
+ */
+ setTicks: function(axis, axisOptions) {
+ axis.ticks = [];
+
+ if (axisOptions.ticks == null)
+ axis.ticks = axis.tickGenerator(axis);
+ else if (typeof axisOptions.ticks == "number") {
+ if (axisOptions.ticks > 0)
+ axis.ticks = axis.tickGenerator(axis);
+ }
+ else if (axisOptions.ticks) {
+ var ticks = axisOptions.ticks;
+
+ if (Object.isFunction(ticks))
+ // generate the ticks
+ ticks = ticks({ min: axis.min, max: axis.max });
+
+ // clean up the user-supplied ticks, copy them over
+ //var i, v;
+ ticks.each(function(t, i){
+ var v = null;
+ var label = null;
+ if(typeof t == 'object') {
+ v = t[0];
+ if(t.length > 1) { label = t[1]; }
+ }
+ else {
+ v = t;
+ }
+ if(!label) {
+ label = axis.tickFormatter(v, axis);
+ }
+ axis.ticks[i] = {v: v, label: label}
+ }.bind(this));
+
+ }
+
+ if (axisOptions.autoscaleMargin != null && axis.ticks.length > 0) {
+ if (axisOptions.min == null)
+ axis.min = Math.min(axis.min, axis.ticks[0].v);
+ if (axisOptions.max == null && axis.ticks.length > 1)
+ axis.max = Math.min(axis.max, axis.ticks[axis.ticks.length - 1].v);
+ }
+ },
+ /**
+ * Function: setSpacing
+ *
+ * Parameters: none
+ */
+ setSpacing: function() {
+ // calculate y label dimensions
+ var i, labels = [], l;
+ for (i = 0; i < this.yaxis.ticks.length; ++i) {
+ l = this.yaxis.ticks[i].label;
+
+ if (l)
+ labels.push('<div class="tickLabel">' + l + '</div>');
+ }
+
+ if (labels.length > 0) {
+ var dummyDiv = new Element('div', {'style': 'position:absolute;top:-10000px;font-size:smaller'});
+ dummyDiv.update(labels.join(""));
+ this.domObj.insert(dummyDiv);
+ this.yLabelMaxWidth = dummyDiv.getWidth();
+ this.yLabelMaxHeight = dummyDiv.select('div')[0].getHeight();
+ dummyDiv.remove();
+ }
+
+ var maxOutset = this.options.grid.borderWidth;
+ if (this.options.points.show)
+ maxOutset = Math.max(maxOutset, this.options.points.radius + this.options.points.lineWidth/2);
+ for (i = 0; i < this.graphData.length; ++i) {
+ if (this.graphData[i].points.show)
+ maxOutset = Math.max(maxOutset, this.graphData[i].points.radius + this.graphData[i].points.lineWidth/2);
+ }
+
+ this.chartOffset.left = this.chartOffset.right = this.chartOffset.top = this.chartOffset.bottom = maxOutset;
+
+ this.chartOffset.left += this.yLabelMaxWidth + this.options.grid.labelMargin;
+ this.chartWidth = this.canvasWidth - this.chartOffset.left - this.chartOffset.right;
+
+ this.xLabelBoxWidth = this.chartWidth / 6;
+ labels = [];
+
+ for (i = 0; i < this.xaxis.ticks.length; ++i) {
+ l = this.xaxis.ticks[i].label;
+ if (l) {
+ labels.push('<span class="tickLabel" width="' + this.xLabelBoxWidth + '">' + l + '</span>');
+ }
+ }
+
+ var xLabelMaxHeight = 0;
+ if (labels.length > 0) {
+ var dummyDiv = new Element('div', {'style': 'position:absolute;top:-10000px;font-size:smaller'});
+ dummyDiv.update(labels.join(""));
+ this.domObj.appendChild(dummyDiv);
+ xLabelMaxHeight = dummyDiv.getHeight();
+ dummyDiv.remove();
+ }
+
+ this.chartOffset.bottom += xLabelMaxHeight + this.options.grid.labelMargin;
+ this.chartHeight = this.canvasHeight - this.chartOffset.bottom - this.chartOffset.top;
+ this.hozScale = this.chartWidth / (this.xaxis.max - this.xaxis.min);
+ this.vertScale = this.chartHeight / (this.yaxis.max - this.yaxis.min);
+ },
+ /**
+ * function: draw
+ */
+ draw: function() {
+ if(this.options.bars.show)
+ {
+ this.extendXRangeIfNeededByBar();
+ this.setSpacing();
+ this.drawGrid();
+ this.drawBarGraph(this.graphData, this.barDataRange);
+ }
+ else if(this.options.pies.show)
+ {
+ this.preparePieData(this.graphData);
+ this.drawPieGraph(this.graphData);
+ }
+ else
+ {
+ this.drawGrid();
+ for (var i = 0; i < this.graphData.length; i++) {
+ this.drawGraph(this.graphData[i]);
+ }
+ }
+ },
+ /**
+ * function: translateHoz
+ *
+ * Paramters:
+ * {Object} x
+ *
+ * Description: Given a value this function translate it to relative x coord on canvas
+ */
+ translateHoz: function(x) {
+ return (x - this.xaxis.min) * this.hozScale;
+ },
+ /**
+ * function: translateVert
+ *
+ * parameters:
+ * {Object} y
+ *
+ * Description: Given a value this function translate it to relative y coord on canvas
+ */
+ translateVert: function(y) {
+ return this.chartHeight - (y - this.yaxis.min) * this.vertScale;
+ },
+ /**
+ * function: drawGrid
+ *
+ * parameters: none
+ *
+ * description: draws the actual grid on the canvas
+ */
+ drawGrid: function() {
+ var i;
+
+ this.context.save();
+ this.context.clearRect(0, 0, this.canvasWidth, this.canvasHeight);
+ this.context.translate(this.chartOffset.left, this.chartOffset.top);
+
+ // draw background, if any
+ if (this.options.grid.backgroundColor != null) {
+ this.context.fillStyle = this.options.grid.backgroundColor;
+ this.context.fillRect(0, 0, this.chartWidth, this.chartHeight);
+ }
+
+ // draw colored areas
+ if (this.options.grid.coloredAreas) {
+ var areas = this.options.grid.coloredAreas;
+ if (Object.isFunction(areas)) {
+ areas = areas({ xmin: this.xaxis.min, xmax: this.xaxis.max, ymin: this.yaxis.min, ymax: this.yaxis.max });
+ }
+
+ areas.each(function(a){
+ // clip
+ if (a.x1 == null || a.x1 < this.xaxis.min)
+ a.x1 = this.xaxis.min;
+ if (a.x2 == null || a.x2 > this.xaxis.max)
+ a.x2 = this.xaxis.max;
+ if (a.y1 == null || a.y1 < this.yaxis.min)
+ a.y1 = this.yaxis.min;
+ if (a.y2 == null || a.y2 > this.yaxis.max)
+ a.y2 = this.yaxis.max;
+
+ var tmp;
+ if (a.x1 > a.x2) {
+ tmp = a.x1;
+ a.x1 = a.x2;
+ a.x2 = tmp;
+ }
+ if (a.y1 > a.y2) {
+ tmp = a.y1;
+ a.y1 = a.y2;
+ a.y2 = tmp;
+ }
+
+ if (a.x1 >= this.xaxis.max || a.x2 <= this.xaxis.min || a.x1 == a.x2
+ || a.y1 >= this.yaxis.max || a.y2 <= this.yaxis.min || a.y1 == a.y2)
+ return;
+
+ this.context.fillStyle = a.color || this.options.grid.coloredAreasColor;
+ this.context.fillRect(Math.floor(this.translateHoz(a.x1)), Math.floor(this.translateVert(a.y2)),
+ Math.floor(this.translateHoz(a.x2) - this.translateHoz(a.x1)), Math.floor(this.translateVert(a.y1) - this.translateVert(a.y2)));
+ }.bind(this));
+
+
+ }
+
+ // draw the inner grid
+ this.context.lineWidth = 1;
+ this.context.strokeStyle = this.options.grid.tickColor;
+ this.context.beginPath();
+ var v;
+ if (this.options.grid.drawXAxis) {
+ this.xaxis.ticks.each(function(aTick){
+ v = aTick.v;
+ if(v <= this.xaxis.min || v >= this.xaxis.max) {
+ return;
+ }
+ this.context.moveTo(Math.floor(this.translateHoz(v)) + this.context.lineWidth / 2, 0);
+ this.context.lineTo(Math.floor(this.translateHoz(v)) + this.context.lineWidth / 2, this.chartHeight);
+ }.bind(this));
+
+ }
+
+ if (this.options.grid.drawYAxis) {
+ this.yaxis.ticks.each(function(aTick){
+ v = aTick.v;
+ if(v <= this.yaxis.min || v >= this.yaxis.max) {
+ return;
+ }
+ this.context.moveTo(0, Math.floor(this.translateVert(v)) + this.context.lineWidth / 2);
+ this.context.lineTo(this.chartWidth, Math.floor(this.translateVert(v)) + this.context.lineWidth / 2);
+ }.bind(this));
+
+ }
+ this.context.stroke();
+
+ if (this.options.grid.borderWidth) {
+ // draw border
+ this.context.lineWidth = this.options.grid.borderWidth;
+ this.context.strokeStyle = this.options.grid.color;
+ this.context.lineJoin = "round";
+ this.context.strokeRect(0, 0, this.chartWidth, this.chartHeight);
+ this.context.restore();
+ }
+ },
+ /**
+ * function: insertLabels
+ *
+ * parameters: none
+ *
+ * description: inserts the label with proper spacing. Both on X and Y axis
+ */
+ insertLabels: function() {
+ this.domObj.select(".tickLabels").invoke('remove');
+
+ var i, tick;
+ var html = '<div class="tickLabels" style="font-size:smaller;color:' + this.options.grid.color + '">';
+
+ // do the x-axis
+ this.xaxis.ticks.each(function(tick){
+ if (!tick.label || tick.v < this.xaxis.min || tick.v > this.xaxis.max)
+ return;
+ html += '<div style="position:absolute;top:' + (this.chartOffset.top + this.chartHeight + this.options.grid.labelMargin) + 'px;left:' + (this.chartOffset.left + this.translateHoz(tick.v) - this.xLabelBoxWidth/2) + 'px;width:' + this.xLabelBoxWidth + 'px;text-align:center" class="tickLabel">' + tick.label + "</div>";
+
+ }.bind(this));
+
+ // do the y-axis
+ this.yaxis.ticks.each(function(tick){
+ if (!tick.label || tick.v < this.yaxis.min || tick.v > this.yaxis.max)
+ return;
+ html += '<div id="ylabels" style="position:absolute;top:' + (this.chartOffset.top + this.translateVert(tick.v) - this.yLabelMaxHeight/2) + 'px;left:0;width:' + this.yLabelMaxWidth + 'px;text-align:right" class="tickLabel">' + tick.label + "</div>";
+ }.bind(this));
+
+ html += '</div>';
+
+ this.domObj.insert(html);
+ },
+ /**
+ * function: drawGraph
+ *
+ * Paramters:
+ * {Object} graphData
+ *
+ * Description: given a graphData (series) this function calls a proper lower level method to draw it.
+ */
+ drawGraph: function(graphData) {
+ if (graphData.lines.show || (!graphData.bars.show && !graphData.points.show))
+ this.drawGraphLines(graphData);
+ if (graphData.bars.show)
+ this.drawGraphBar(graphData);
+ if (graphData.points.show)
+ this.drawGraphPoints(graphData);
+ },
+ /**
+ * function: plotLine
+ *
+ * parameters:
+ * {Object} data
+ * {Object} offset
+ *
+ * description:
+ * Helper function that plots a line based on the data provided
+ */
+ plotLine: function(data, offset) {
+ var prev, cur = null, drawx = null, drawy = null;
+
+ this.context.beginPath();
+ for (var i = 0; i < data.length; ++i) {
+ prev = cur;
+ cur = data[i];
+
+ if (prev == null || cur == null)
+ continue;
+
+ var x1 = prev[0], y1 = prev[1],
+ x2 = cur[0], y2 = cur[1];
+
+ // clip with ymin
+ if (y1 <= y2 && y1 < this.yaxis.min) {
+ if (y2 < this.yaxis.min)
+ continue; // line segment is outside
+ // compute new intersection point
+ x1 = (this.yaxis.min - y1) / (y2 - y1) * (x2 - x1) + x1;
+ y1 = this.yaxis.min;
+ }
+ else if (y2 <= y1 && y2 < this.yaxis.min) {
+ if (y1 < this.yaxis.min)
+ continue;
+ x2 = (this.yaxis.min - y1) / (y2 - y1) * (x2 - x1) + x1;
+ y2 = this.yaxis.min;
+ }
+
+ // clip with ymax
+ if (y1 >= y2 && y1 > this.yaxis.max) {
+ if (y2 > this.yaxis.max)
+ continue;
+ x1 = (this.yaxis.max - y1) / (y2 - y1) * (x2 - x1) + x1;
+ y1 = this.yaxis.max;
+ }
+ else if (y2 >= y1 && y2 > this.yaxis.max) {
+ if (y1 > this.yaxis.max)
+ continue;
+ x2 = (this.yaxis.max - y1) / (y2 - y1) * (x2 - x1) + x1;
+ y2 = this.yaxis.max;
+ }
+
+ // clip with xmin
+ if (x1 <= x2 && x1 < this.xaxis.min) {
+ if (x2 < this.xaxis.min)
+ continue;
+ y1 = (this.xaxis.min - x1) / (x2 - x1) * (y2 - y1) + y1;
+ x1 = this.xaxis.min;
+ }
+ else if (x2 <= x1 && x2 < this.xaxis.min) {
+ if (x1 < this.xaxis.min)
+ continue;
+ y2 = (this.xaxis.min - x1) / (x2 - x1) * (y2 - y1) + y1;
+ x2 = this.xaxis.min;
+ }
+
+ // clip with xmax
+ if (x1 >= x2 && x1 > this.xaxis.max) {
+ if (x2 > this.xaxis.max)
+ continue;
+ y1 = (this.xaxis.max - x1) / (x2 - x1) * (y2 - y1) + y1;
+ x1 = this.xaxis.max;
+ }
+ else if (x2 >= x1 && x2 > this.xaxis.max) {
+ if (x1 > this.xaxis.max)
+ continue;
+ y2 = (this.xaxis.max - x1) / (x2 - x1) * (y2 - y1) + y1;
+ x2 = this.xaxis.max;
+ }
+
+ if (drawx != this.translateHoz(x1) || drawy != this.translateVert(y1) + offset)
+ this.context.moveTo(this.translateHoz(x1), this.translateVert(y1) + offset);
+
+ drawx = this.translateHoz(x2);
+ drawy = this.translateVert(y2) + offset;
+ this.context.lineTo(drawx, drawy);
+ }
+ this.context.stroke();
+ },
+ /**
+ * function: plotLineArea
+ *
+ * parameters:
+ * {Object} data
+ *
+ * description:
+ * Helper functoin that plots a colored line graph. This function
+ * takes the data nad then fill in the area on the graph properly
+ */
+ plotLineArea: function(data) {
+ var prev, cur = null;
+
+ var bottom = Math.min(Math.max(0, this.yaxis.min), this.yaxis.max);
+ var top, lastX = 0;
+
+ var areaOpen = false;
+
+ for (var i = 0; i < data.length; ++i) {
+ prev = cur;
+ cur = data[i];
+
+ if (areaOpen && prev != null && cur == null) {
+ // close area
+ this.context.lineTo(this.translateHoz(lastX), this.translateVert(bottom));
+ this.context.fill();
+ areaOpen = false;
+ continue;
+ }
+
+ if (prev == null || cur == null)
+ continue;
+
+ var x1 = prev[0], y1 = prev[1],
+ x2 = cur[0], y2 = cur[1];
+
+ // clip x values
+
+ // clip with xmin
+ if (x1 <= x2 && x1 < this.xaxis.min) {
+ if (x2 < this.xaxis.min)
+ continue;
+ y1 = (this.xaxis.min - x1) / (x2 - x1) * (y2 - y1) + y1;
+ x1 = this.xaxis.min;
+ }
+ else if (x2 <= x1 && x2 < this.xaxis.min) {
+ if (x1 < this.xaxis.min)
+ continue;
+ y2 = (this.xaxis.min - x1) / (x2 - x1) * (y2 - y1) + y1;
+ x2 = this.xaxis.min;
+ }
+
+ // clip with xmax
+ if (x1 >= x2 && x1 > this.xaxis.max) {
+ if (x2 > this.xaxis.max)
+ continue;
+ y1 = (this.xaxis.max - x1) / (x2 - x1) * (y2 - y1) + y1;
+ x1 = this.xaxis.max;
+ }
+ else if (x2 >= x1 && x2 > this.xaxis.max) {
+ if (x1 > this.xaxis.max)
+ continue;
+ y2 = (this.xaxis.max - x1) / (x2 - x1) * (y2 - y1) + y1;
+ x2 = this.xaxis.max;
+ }
+
+ if (!areaOpen) {
+ // open area
+ this.context.beginPath();
+ this.context.moveTo(this.translateHoz(x1), this.translateVert(bottom));
+ areaOpen = true;
+ }
+
+ // now first check the case where both is outside
+ if (y1 >= this.yaxis.max && y2 >= this.yaxis.max) {
+ this.context.lineTo(this.translateHoz(x1), this.translateVert(this.yaxis.max));
+ this.context.lineTo(this.translateHoz(x2), this.translateVert(this.yaxis.max));
+ continue;
+ }
+ else if (y1 <= this.yaxis.min && y2 <= this.yaxis.min) {
+ this.context.lineTo(this.translateHoz(x1), this.translateVert(this.yaxis.min));
+ this.context.lineTo(this.translateHoz(x2), this.translateVert(this.yaxis.min));
+ continue;
+ }
+
+ var x1old = x1, x2old = x2;
+
+ // clip with ymin
+ if (y1 <= y2 && y1 < this.yaxis.min && y2 >= this.yaxis.min) {
+ x1 = (this.yaxis.min - y1) / (y2 - y1) * (x2 - x1) + x1;
+ y1 = this.yaxis.min;
+ }
+ else if (y2 <= y1 && y2 < this.yaxis.min && y1 >= this.yaxis.min) {
+ x2 = (this.yaxis.min - y1) / (y2 - y1) * (x2 - x1) + x1;
+ y2 = this.yaxis.min;
+ }
+
+ // clip with ymax
+ if (y1 >= y2 && y1 > this.yaxis.max && y2 <= this.yaxis.max) {
+ x1 = (this.yaxis.max - y1) / (y2 - y1) * (x2 - x1) + x1;
+ y1 = this.yaxis.max;
+ }
+ else if (y2 >= y1 && y2 > this.yaxis.max && y1 <= this.yaxis.max) {
+ x2 = (this.yaxis.max - y1) / (y2 - y1) * (x2 - x1) + x1;
+ y2 = this.yaxis.max;
+ }
+
+
+ // if the x value was changed we got a rectangle
+ // to fill
+ if (x1 != x1old) {
+ if (y1 <= this.yaxis.min)
+ top = this.yaxis.min;
+ else
+ top = this.yaxis.max;
+
+ this.context.lineTo(this.translateHoz(x1old), this.translateVert(top));
+ this.context.lineTo(this.translateHoz(x1), this.translateVert(top));
+ }
+
+ // fill the triangles
+ this.context.lineTo(this.translateHoz(x1), this.translateVert(y1));
+ this.context.lineTo(this.translateHoz(x2), this.translateVert(y2));
+
+ // fill the other rectangle if it's there
+ if (x2 != x2old) {
+ if (y2 <= this.yaxis.min)
+ top = this.yaxis.min;
+ else
+ top = this.yaxis.max;
+
+ this.context.lineTo(this.translateHoz(x2old), this.translateVert(top));
+ this.context.lineTo(this.translateHoz(x2), this.translateVert(top));
+ }
+
+ lastX = Math.max(x2, x2old);
+ }
+
+ if (areaOpen) {
+ this.context.lineTo(this.translateHoz(lastX), this.translateVert(bottom));
+ this.context.fill();
+ }
+ },
+ /**
+ * function: drawGraphLines
+ *
+ * parameters:
+ * {Object} graphData
+ *
+ * description:
+ * Main function that daws the line graph. This function is called
+ * if <options> lines property is set to show or no other type of
+ * graph is specified. This function depends on <plotLineArea> and
+ * <plotLine> functions.
+ */
+ drawGraphLines: function(graphData) {
+ this.context.save();
+ this.context.translate(this.chartOffset.left, this.chartOffset.top);
+ this.context.lineJoin = "round";
+
+ var lw = graphData.lines.lineWidth;
+ var sw = graphData.shadowSize;
+ // FIXME: consider another form of shadow when filling is turned on
+ if (sw > 0) {
+ // draw shadow in two steps
+ this.context.lineWidth = sw / 2;
+ this.context.strokeStyle = "rgba(0,0,0,0.1)";
+ this.plotLine(graphData.data, lw/2 + sw/2 + this.context.lineWidth/2);
+
+ this.context.lineWidth = sw / 2;
+ this.context.strokeStyle = "rgba(0,0,0,0.2)";
+ this.plotLine(graphData.data, lw/2 + this.context.lineWidth/2);
+ }
+
+ this.context.lineWidth = lw;
+ this.context.strokeStyle = graphData.color;
+ if (graphData.lines.fill) {
+ this.context.fillStyle = graphData.lines.fillColor != null ? graphData.lines.fillColor : this.parseColor(graphData.color).scale(null, null, null, 0.4).toString();
+ this.plotLineArea(graphData.data, 0);
+ }
+
+ this.plotLine(graphData.data, 0);
+ this.context.restore();
+ },
+ /**
+ * function: plotPoints
+ *
+ * parameters:
+ * {Object} data
+ * {Object} radius
+ * {Object} fill
+ *
+ * description:
+ * Helper function that draws the point graph according to the data provided. Size of each
+ * point is provided by radius variable and fill specifies if points
+ * are filled
+ */
+ plotPoints: function(data, radius, fill) {
+ for (var i = 0; i < data.length; ++i) {
+ if (data[i] == null)
+ continue;
+
+ var x = data[i][0], y = data[i][1];
+ if (x < this.xaxis.min || x > this.xaxis.max || y < this.yaxis.min || y > this.yaxis.max)
+ continue;
+
+ this.context.beginPath();
+ this.context.arc(this.translateHoz(x), this.translateVert(y), radius, 0, 2 * Math.PI, true);
+ if (fill)
+ this.context.fill();
+ this.context.stroke();
+ }
+ },
+ /**
+ * function: plotPointShadows
+ *
+ * parameters:
+ * {Object} data
+ * {Object} offset
+ * {Object} radius
+ *
+ * description:
+ * Helper function that draws the shadows for the points.
+ */
+ plotPointShadows: function(data, offset, radius) {
+ for (var i = 0; i < data.length; ++i) {
+ if (data[i] == null)
+ continue;
+
+ var x = data[i][0], y = data[i][1];
+ if (x < this.xaxis.min || x > this.xaxis.max || y < this.yaxis.min || y > this.yaxis.max)
+ continue;
+ this.context.beginPath();
+ this.context.arc(this.translateHoz(x), this.translateVert(y) + offset, radius, 0, Math.PI, false);
+ this.context.stroke();
+ }
+ },
+ /**
+ * function: drawGraphPoints
+ *
+ * paramters:
+ * {Object} graphData
+ *
+ * description:
+ * Draws the point graph onto the canvas. This function depends on helper
+ * functions <plotPointShadows> and <plotPoints>
+ */
+ drawGraphPoints: function(graphData) {
+ this.context.save();
+ this.context.translate(this.chartOffset.left, this.chartOffset.top);
+
+ var lw = graphData.lines.lineWidth;
+ var sw = graphData.shadowSize;
+ if (sw > 0) {
+ // draw shadow in two steps
+ this.context.lineWidth = sw / 2;
+ this.context.strokeStyle = "rgba(0,0,0,0.1)";
+ this.plotPointShadows(graphData.data, sw/2 + this.context.lineWidth/2, graphData.points.radius);
+
+ this.context.lineWidth = sw / 2;
+ this.context.strokeStyle = "rgba(0,0,0,0.2)";
+ this.plotPointShadows(graphData.data, this.context.lineWidth/2, graphData.points.radius);
+ }
+
+ this.context.lineWidth = graphData.points.lineWidth;
+ this.context.strokeStyle = graphData.color;
+ this.context.fillStyle = graphData.points.fillColor != null ? graphData.points.fillColor : graphData.color;
+ this.plotPoints(graphData.data, graphData.points.radius, graphData.points.fill);
+ this.context.restore();
+ },
+ /**
+ * function: preparePieData
+ *
+ * parameters:
+ * {Object} graphData
+ *
+ * Description:
+ * Helper function that manipulates the given data stream so that it can
+ * be plotted as a Pie Chart
+ */
+ preparePieData: function(graphData)
+ {
+ for(i = 0; i < graphData.length; i++)
+ {
+ var data = 0;
+ for(j = 0; j < graphData[i].data.length; j++){
+ data += parseInt(graphData[i].data[j][1]);
+ }
+ graphData[i].data = data;
+ }
+ },
+ /**
+ * function: drawPieShadow
+ *
+ * {Object} anchorX
+ * {Object} anchorY
+ * {Object} radius
+ *
+ * description:
+ * Helper function that draws a shadow for the Pie Chart. This just draws
+ * a circle with offset that simulates shadow. We do not give each piece
+ * of the pie an individual shadow.
+ */
+ drawPieShadow: function(anchorX, anchorY, radius)
+ {
+ this.context.beginPath();
+ this.context.moveTo(anchorX, anchorY);
+ this.context.fillStyle = 'rgba(0,0,0,' + 0.1 + ')';
+ startAngle = 0;
+ endAngle = (Math.PI/180)*360;
+ this.context.arc(anchorX + 2, anchorY +2, radius + (this.options.shadowSize/2), startAngle, endAngle, false);
+ this.context.fill();
+ this.context.closePath();
+ },
+ /**
+ * function: drawPieGraph
+ *
+ * parameters:
+ * {Object} graphData
+ *
+ * description:
+ * Draws the actual pie chart. This function depends on helper function
+ * <drawPieShadow> to draw the actual shadow
+ */
+ drawPieGraph: function(graphData)
+ {
+ var sumData = 0;
+ var radius = 0;
+ var centerX = this.chartWidth/2;
+ var centerY = this.chartHeight/2;
+ var startAngle = 0;
+ var endAngle = 0;
+ var fontSize = this.options.pies.fontSize;
+ var labelWidth = this.options.pies.labelWidth;
+
+ //determine Pie Radius
+ if(!this.options.pies.autoScale)
+ radius = this.options.pies.radius;
+ else
+ radius = (this.chartHeight * 0.85)/2;
+
+ var labelRadius = radius * 1.05;
+
+ for(i = 0; i < graphData.length; i++)
+ sumData += graphData[i].data;
+
+ // used to adjust labels so that everything adds up to 100%
+ totalPct = 0;
+
+ //lets draw the shadow first.. we don't need an individual shadow to every pie rather we just
+ //draw a circle underneath to simulate the shadow...
+ this.drawPieShadow(centerX, centerY, radius, 0, 0);
+
+ //lets draw the actual pie chart now.
+ graphData.each(function(gd, j){
+ var pct = gd.data / sumData;
+ startAngle = endAngle;
+ endAngle += pct * (2 * Math.PI);
+ var sliceMiddle = (endAngle - startAngle) / 2 + startAngle;
+ var labelX = centerX + Math.cos(sliceMiddle) * labelRadius;
+ var labelY = centerY + Math.sin(sliceMiddle) * labelRadius;
+ var anchorX = centerX;
+ var anchorY = centerY;
+ var textAlign = null;
+ var verticalAlign = null;
+ var left = 0;
+ var top = 0;
+
+ //draw pie:
+ //drawing pie
+ this.context.beginPath();
+ this.context.moveTo(anchorX, anchorY);
+ this.context.arc(anchorX, anchorY, radius, startAngle, endAngle, false);
+ this.context.closePath();
+ this.context.fillStyle = this.parseColor(gd.color).scale(null, null, null, this.options.pies.fillOpacity).toString();
+
+ if(this.options.pies.fill) { this.context.fill(); }
+
+ // drawing labels
+ if (sliceMiddle <= 0.25 * (2 * Math.PI))
+ {
+ // text on top and align left
+ textAlign = "left";
+ verticalAlign = "top";
+ left = labelX;
+ top = labelY + fontSize;
+ }
+ else if (sliceMiddle > 0.25 * (2 * Math.PI) && sliceMiddle <= 0.5 * (2 * Math.PI))
+ {
+ // text on bottom and align left
+ textAlign = "left";
+ verticalAlign = "bottom";
+ left = labelX - labelWidth;
+ top = labelY;
+ }
+ else if (sliceMiddle > 0.5 * (2 * Math.PI) && sliceMiddle <= 0.75 * (2 * Math.PI))
+ {
+ // text on bottom and align right
+ textAlign = "right";
+ verticalAlign = "bottom";
+ left = labelX - labelWidth;
+ top = labelY - fontSize;
+ }
+ else
+ {
+ // text on top and align right
+ textAlign = "right";
+ verticalAlign = "bottom";
+ left = labelX;
+ top = labelY - fontSize;
+ }
+
+ left = left + "px";
+ top = top + "px";
+ var textVal = Math.round(pct * 100);
+
+ if (j == graphData.length - 1) {
+ if (textVal + totalPct < 100) {
+ textVal = textVal + 1;
+ } else if (textVal + totalPct > 100) {
+ textVal = textVal - 1;
+ };
+ }
+
+ var html = "<div style=\"position: absolute;zindex:11; width:" + labelWidth + "px;fontSize:" + fontSize + "px;overflow:hidden;top:"+ top + ";left:"+ left + ";textAlign:" + textAlign + ";verticalAlign:" + verticalAlign +"\">" + textVal + "%</div>";
+ //$(html).appendTo(target);
+ this.domObj.insert(html);
+
+ totalPct = totalPct + textVal;
+ }.bind(this));
+
+ },
+ /**
+ * function: drawBarGraph
+ *
+ * parameters:
+ * {Object} graphData
+ * {Object} barDataRange
+ *
+ * description:
+ * Goes through each series in graphdata and passes it onto <drawBarGraphs> function
+ */
+ drawBarGraph: function(graphData, barDataRange)
+ {
+ graphData.each(function(gd, i){
+ this.drawGraphBars(gd, i, graphData.size(), barDataRange);
+ }.bind(this));
+ },
+ /**
+ * function: drawGraphBar
+ *
+ * parameters:
+ * {Object} graphData
+ *
+ * description:
+ * This function is called when an individual series in GraphData is bar graph and plots it
+ */
+ drawGraphBar: function(graphData)
+ {
+ this.drawGraphBars(graphData, 0, this.graphData.length, this.barDataRange);
+ },
+ /**
+ * function: plotBars
+ *
+ * parameters:
+ * {Object} graphData
+ * {Object} data
+ * {Object} barWidth
+ * {Object} offset
+ * {Object} fill
+ * {Object} counter
+ * {Object} total
+ * {Object} barDataRange
+ *
+ * description:
+ * Helper function that draws the bar graph based on data.
+ */
+ plotBars: function(graphData, data, barWidth, offset, fill,counter, total, barDataRange) {
+ var shift = 0;
+
+ if(total % 2 == 0)
+ {
+ shift = (1 + ((counter - total /2 ) - 1)) * barWidth;
+ }
+ else
+ {
+ var interval = 0.5;
+ if(counter == (total/2 - interval )) {
+ shift = - barWidth * interval;
+ }
+ else {
+ shift = (interval + (counter - Math.round(total/2))) * barWidth;
+ }
+ }
+
+ var rangeData = [];
+ data.each(function(d){
+ if(!d) return;
+
+ var x = d[0], y = d[1];
+ var drawLeft = true, drawTop = true, drawRight = true;
+ var left = x + shift, right = x + barWidth + shift, bottom = 0, top = y;
+ var rangeDataPoint = {};
+ rangeDataPoint.left = left;
+ rangeDataPoint.right = right;
+ rangeDataPoint.value = top;
+ rangeData.push(rangeDataPoint);
+
+ if (right < this.xaxis.min || left > this.xaxis.max || top < this.yaxis.min || bottom > this.yaxis.max)
+ return;
+
+ // clip
+ if (left < this.xaxis.min) {
+ left = this.xaxis.min;
+ drawLeft = false;
+ }
+
+ if (right > this.xaxis.max) {
+ right = this.xaxis.max;
+ drawRight = false;
+ }
+
+ if (bottom < this.yaxis.min)
+ bottom = this.yaxis.min;
+
+ if (top > this.yaxis.max) {
+ top = this.yaxis.max;
+ drawTop = false;
+ }
+
+ if(graphData.bars.showShadow && graphData.shadowSize > 0)
+ this.plotShadowOutline(graphData, this.context.strokeStyle, left, bottom, top, right, drawLeft, drawRight, drawTop);
+
+ // fill the bar
+ if (fill) {
+ this.context.beginPath();
+ this.context.moveTo(this.translateHoz(left), this.translateVert(bottom) + offset);
+ this.context.lineTo(this.translateHoz(left), this.translateVert(top) + offset);
+ this.context.lineTo(this.translateHoz(right), this.translateVert(top) + offset);
+ this.context.lineTo(this.translateHoz(right), this.translateVert(bottom) + offset);
+ this.context.fill();
+ }
+
+ // draw outline
+ if (drawLeft || drawRight || drawTop) {
+ this.context.beginPath();
+ this.context.moveTo(this.translateHoz(left), this.translateVert(bottom) + offset);
+ if (drawLeft)
+ this.context.lineTo(this.translateHoz(left), this.translateVert(top) + offset);
+ else
+ this.context.moveTo(this.translateHoz(left), this.translateVert(top) + offset);
+
+ if (drawTop)
+ this.context.lineTo(this.translateHoz(right), this.translateVert(top) + offset);
+ else
+ this.context.moveTo(this.translateHoz(right), this.translateVert(top) + offset);
+ if (drawRight)
+ this.context.lineTo(this.translateHoz(right), this.translateVert(bottom) + offset);
+ else
+ this.context.moveTo(this.translateHoz(right), this.translateVert(bottom) + offset);
+ this.context.stroke();
+ }
+ }.bind(this));
+
+ barDataRange.push(rangeData);
+ },
+ /**
+ * function: plotShadowOutline
+ *
+ * parameters:
+ * {Object} graphData
+ * {Object} orgStrokeStyle
+ * {Object} left
+ * {Object} bottom
+ * {Object} top
+ * {Object} right
+ * {Object} drawLeft
+ * {Object} drawRight
+ * {Object} drawTop
+ *
+ * description:
+ * Helper function that draws a outline simulating shadow for bar chart
+ */
+ plotShadowOutline: function(graphData, orgStrokeStyle, left, bottom, top, right, drawLeft, drawRight, drawTop)
+ {
+ var orgOpac = 0.3;
+
+ for(var n = 1; n <= this.options.shadowSize/2; n++)
+ {
+ var opac = orgOpac * n;
+ this.context.beginPath();
+ this.context.strokeStyle = "rgba(0,0,0," + opac + ")";
+
+ this.context.moveTo(this.translateHoz(left) + n, this.translateVert(bottom));
+
+ if(drawLeft)
+ this.context.lineTo(this.translateHoz(left) + n, this.translateVert(top) - n);
+ else
+ this.context.moveTo(this.translateHoz(left) + n, this.translateVert(top) - n);
+
+ if(drawTop)
+ this.context.lineTo(this.translateHoz(right) + n, this.translateVert(top) - n);
+ else
+ this.context.moveTo(this.translateHoz(right) + n, this.translateVert(top) - n);
+
+ if(drawRight)
+ this.context.lineTo(this.translateHoz(right) + n, this.translateVert(bottom));
+ else
+ this.context.lineTo(this.translateHoz(right) + n, this.translateVert(bottom));
+
+ this.context.stroke();
+ this.context.closePath();
+ }
+
+ this.context.strokeStyle = orgStrokeStyle;
+ },
+ /**
+ * function: drawGraphBars
+ *
+ * parameters:
+ * {Object} graphData
+ * {Object} counter
+ * {Object} total
+ * {Object} barDataRange
+ *
+ * description:
+ * Draws the actual bar graphs. Calls <plotBars> to draw the individual bar
+ */
+ drawGraphBars: function(graphData, counter, total, barDataRange){
+ this.context.save();
+ this.context.translate(this.chartOffset.left, this.chartOffset.top);
+ this.context.lineJoin = "round";
+
+ var bw = graphData.bars.barWidth;
+ var lw = Math.min(graphData.bars.lineWidth, bw);
+
+
+ this.context.lineWidth = lw;
+ this.context.strokeStyle = graphData.color;
+ if (graphData.bars.fill) {
+ this.context.fillStyle = graphData.bars.fillColor != null ? graphData.bars.fillColor : this.parseColor(graphData.color).scale(null, null, null, this.options.bars.fillOpacity).toString();
+ }
+ this.plotBars(graphData, graphData.data, bw, 0, graphData.bars.fill, counter, total, barDataRange);
+ this.context.restore();
+ },
+ /**
+ * function: insertLegend
+ *
+ * description:
+ * inserts legend onto the graph. *legend: {show: true}* must be set in <options>
+ * for for this to work.
+ */
+ insertLegend: function() {
+ this.domObj.select(".legend").invoke('remove');
+
+ if (!this.options.legend.show)
+ return;
+
+ var fragments = [];
+ var rowStarted = false;
+ this.graphData.each(function(gd, index){
+ if(!gd.label) {
+ return;
+ }
+ if(index % this.options.legend.noColumns == 0) {
+ if(rowStarted) {
+ fragments.push('</tr>');
+ }
+ fragments.push('<tr>');
+ rowStarted = true;
+ }
+ var label = gd.label;
+ if(this.options.legend.labelFormatter != null) {
+ label = this.options.legend.labelFormatter(label);
+ }
+
+ fragments.push(
+ '<td class="legendColorBox"><div style="border:1px solid ' + this.options.legend.labelBoxBorderColor + ';padding:1px"><div style="width:14px;height:10px;background-color:' + gd.color + ';overflow:hidden"></div></div></td>' +
+ '<td class="legendLabel">' + label + '</td>');
+
+ }.bind(this));
+
+ if (rowStarted)
+ fragments.push('</tr>');
+
+ if(fragments.length > 0){
+ var table = '<table style="font-size:smaller;color:' + this.options.grid.color + '">' + fragments.join("") + '</table>';
+ if($(this.options.legend.container) != null){
+ $(this.options.legend.container).insert(table);
+ }else{
+ var pos = '';
+ var p = this.options.legend.position, m = this.options.legend.margin;
+
+ if(p.charAt(0) == 'n') pos += 'top:' + (m + this.chartOffset.top) + 'px;';
+ else if(p.charAt(0) == 's') pos += 'bottom:' + (m + this.chartOffset.bottom) + 'px;';
+ if(p.charAt(1) == 'e') pos += 'right:' + (m + this.chartOffset.right) + 'px;';
+ else if(p.charAt(1) == 'w') pos += 'left:' + (m + this.chartOffset.bottom) + 'px;';
+ var div = this.domObj.insert('<div class="ProtoChart-legend" style="border: 1px solid '+this.options.legend.borderColor+'; position:absolute;z-index:2;' + pos +'">' + table + '</div>').getElementsBySelector('div.ProtoChart-legend').first();
+
+ if(this.options.legend.backgroundOpacity != 0.0){
+ var c = this.options.legend.backgroundColor;
+ if(c == null){
+ var tmp = (this.options.grid.backgroundColor != null) ? this.options.grid.backgroundColor : this.extractColor(div);
+ c = this.parseColor(tmp).adjust(null, null, null, 1).toString();
+ }
+ this.domObj.insert('<div class="ProtoChart-legend-bg" style="position:absolute;width:' + div.getWidth() + 'px;height:' + div.getHeight() + 'px;' + pos +'background-color:' + c + ';"> </div>').select('div.ProtoChart-legend-bg').first().setStyle({
+ 'opacity': this.options.legend.backgroundOpacity
+ });
+ }
+ }
+ }
+ },
+ /**
+ * Function: onMouseMove
+ *
+ * parameters:
+ * event: {Object} ev
+ *
+ * Description:
+ * Called whenever the mouse is moved on the graph. This takes care of the mousetracking.
+ * This event also fires <ProtoChart:mousemove> event, which gets current position of the
+ * mouse as a parameters.
+ */
+ onMouseMove: function(ev) {
+ var e = ev || window.event;
+ if (e.pageX == null && e.clientX != null) {
+ var de = document.documentElement, b = $(document.body);
+ this.lastMousePos.pageX = e.clientX + (de && de.scrollLeft || b.scrollLeft || 0);
+ this.lastMousePos.pageY = e.clientY + (de && de.scrollTop || b.scrollTop || 0);
+ }
+ else {
+ this.lastMousePos.pageX = e.pageX;
+ this.lastMousePos.pageY = e.pageY;
+ }
+
+ var offset = this.overlay.cumulativeOffset();
+ var pos = {
+ x: this.xaxis.min + (e.pageX - offset.left - this.chartOffset.left) / this.hozScale,
+ y: this.yaxis.max - (e.pageY - offset.top - this.chartOffset.top) / this.vertScale
+ };
+
+ if(this.options.mouse.track && this.selectionInterval == null) {
+ this.hit(ev, pos);
+ }
+ this.domObj.fire("ProtoChart:mousemove", [ pos ]);
+ },
+ /**
+ * Function: onMouseDown
+ *
+ * Parameters:
+ * Event - {Object} e
+ *
+ * Description:
+ * Called whenever the mouse is clicked.
+ */
+ onMouseDown: function(e) {
+ if (e.which != 1) // only accept left-click
+ return;
+
+ document.body.focus();
+
+ if (document.onselectstart !== undefined && this.workarounds.onselectstart == null) {
+ this.workarounds.onselectstart = document.onselectstart;
+ document.onselectstart = function () { return false; };
+ }
+ if (document.ondrag !== undefined && this.workarounds.ondrag == null) {
+ this.workarounds.ondrag = document.ondrag;
+ document.ondrag = function () { return false; };
+ }
+
+ this.setSelectionPos(this.selection.first, e);
+
+ if (this.selectionInterval != null)
+ clearInterval(this.selectionInterval);
+ this.lastMousePos.pageX = null;
+ this.selectionInterval = setInterval(this.updateSelectionOnMouseMove.bind(this), 200);
+
+ this.overlay.observe("mouseup", this.onSelectionMouseUp.bind(this));
+ },
+ /**
+ * Function: onClick
+ * parameters:
+ * Event - {Object} e
+ * Description:
+ * Handles the "click" event on the chart. This function fires <ProtoChart:plotclick> event. If
+ * <options.allowDataClick> is enabled then it also fires <ProtoChart:dataclick> event which gives
+ * you access to exact data point where user clicked.
+ */
+ onClick: function(e) {
+ if (this.ignoreClick) {
+ this.ignoreClick = false;
+ return;
+ }
+ var offset = this.overlay.cumulativeOffset();
+ var pos ={
+ x: this.xaxis.min + (e.pageX - offset.left - this.chartOffset.left) / this.hozScale,
+ y: this.yaxis.max - (e.pageY - offset.top - this.chartOffset.top) / this.vertScale
+ };
+ this.domObj.fire("ProtoChart:plotclick", [ pos ]);
+
+ if(this.options.allowDataClick)
+ {
+ var dataPoint = {};
+ if(this.options.points.show)
+ {
+ dataPoint = this.getDataClickPoint(pos, this.options);
+ this.domObj.fire("ProtoChart:dataclick", [dataPoint]);
+ }
+ else if(this.options.lines.show && this.options.points.show)
+ {
+ dataPoint = this.getDataClickPoint(pos, this.options);
+ this.domObj.fire("ProtoChart:dataclick", [dataPoint]);
+ }
+ else if(this.options.bars.show)
+ {
+ if(this.barDataRange.length > 0)
+ {
+ dataPoint = this.getDataClickPoint(pos, this.options, this.barDataRange);
+ this.domObj.fire("ProtoChart:dataclick", [dataPoint]);
+ }
+ }
+ }
+ },
+ /**
+ * Internal function used by onClick method.
+ */
+ getDataClickPoint: function(pos, options, barDataRange)
+ {
+ pos.x = parseInt(pos.x);
+ pos.y = parseInt(pos.y);
+ var yClick = pos.y.toFixed(0);
+ var dataVal = {};
+
+ dataVal.position = pos;
+ dataVal.value = '';
+
+ if(options.points.show)
+ {
+ this.graphData.each(function(gd){
+ var temp = gd.data;
+ var xClick = parseInt(pos.x.toFixed(0));
+ if(xClick < 0) { xClick = 0; }
+ if(temp[xClick] && yClick >= temp[xClick][1] - (this.options.points.radius * 10) && yClick <= temp[xClick][1] + (this.options.points.radius * 10)) {
+ dataVal.value = temp[xClick][1];
+ throw $break;
+ }
+
+ }.bind(this));
+ }
+ else if(options.bars.show)
+ {
+ xClick = pos.x;
+ this.barDataRange.each(function(barData){
+ barData.each(function(data){
+ var temp = data;
+ if(xClick > temp.left && xClick < temp.right) {
+ dataVal.value = temp.value;
+ throw $break;
+ }
+ }.bind(this));
+ }.bind(this));
+
+ }
+
+ return dataVal;
+ },
+ /**
+ * Function: triggerSelectedEvent
+ *
+ * Description:
+ * Internal function called when a selection on the graph is made. This function
+ * fires <ProtoChart:selected> event which has a parameter representing the selection
+ * {
+ * x1: {int}, y1: {int},
+ * x2: {int}, y2: {int}
+ * }
+ */
+ triggerSelectedEvent: function() {
+ var x1, x2, y1, y2;
+ if (this.selection.first.x <= this.selection.second.x) {
+ x1 = this.selection.first.x;
+ x2 = this.selection.second.x;
+ }
+ else {
+ x1 = this.selection.second.x;
+ x2 = this.selection.first.x;
+ }
+
+ if (this.selection.first.y >= this.selection.second.y) {
+ y1 = this.selection.first.y;
+ y2 = this.selection.second.y;
+ }
+ else {
+ y1 = this.selection.second.y;
+ y2 = this.selection.first.y;
+ }
+
+ x1 = this.xaxis.min + x1 / this.hozScale;
+ x2 = this.xaxis.min + x2 / this.hozScale;
+
+ y1 = this.yaxis.max - y1 / this.vertScale;
+ y2 = this.yaxis.max - y2 / this.vertScale;
+
+ this.domObj.fire("ProtoChart:selected", [ { x1: x1, y1: y1, x2: x2, y2: y2 } ]);
+ },
+ /**
+ * Internal function
+ */
+ onSelectionMouseUp: function(e) {
+ if (document.onselectstart !== undefined)
+ document.onselectstart = this.workarounds.onselectstart;
+ if (document.ondrag !== undefined)
+ document.ondrag = this.workarounds.ondrag;
+
+ if (this.selectionInterval != null) {
+ clearInterval(this.selectionInterval);
+ this.selectionInterval = null;
+ }
+
+ this.setSelectionPos(this.selection.second, e);
+ this.clearSelection();
+ if (!this.selectionIsSane() || e.which != 1)
+ return false;
+
+ this.drawSelection();
+ this.triggerSelectedEvent();
+ this.ignoreClick = true;
+
+ return false;
+ },
+ setSelectionPos: function(pos, e) {
+ var offset = $(this.overlay).cumulativeOffset();
+ if (this.options.selection.mode == "y") {
+ if (pos == this.selection.first)
+ pos.x = 0;
+ else
+ pos.x = this.chartWidth;
+ }
+ else {
+ pos.x = e.pageX - offset.left - this.chartOffset.left;
+ pos.x = Math.min(Math.max(0, pos.x), this.chartWidth);
+ }
+
+ if (this.options.selection.mode == "x") {
+ if (pos == this.selection.first)
+ pos.y = 0;
+ else
+ pos.y = this.chartHeight;
+ }
+ else {
+ pos.y = e.pageY - offset.top - this.chartOffset.top;
+ pos.y = Math.min(Math.max(0, pos.y), this.chartHeight);
+ }
+ },
+ updateSelectionOnMouseMove: function() {
+ if (this.lastMousePos.pageX == null)
+ return;
+
+ this.setSelectionPos(this.selection.second, this.lastMousePos);
+ this.clearSelection();
+ if (this.selectionIsSane())
+ this.drawSelection();
+ },
+ clearSelection: function() {
+ if (this.prevSelection == null)
+ return;
+
+ var x = Math.min(this.prevSelection.first.x, this.prevSelection.second.x),
+ y = Math.min(this.prevSelection.first.y, this.prevSelection.second.y),
+ w = Math.abs(this.prevSelection.second.x - this.prevSelection.first.x),
+ h = Math.abs(this.prevSelection.second.y - this.prevSelection.first.y);
+
+ this.overlayContext.clearRect(x + this.chartOffset.left - this.overlayContext.lineWidth,
+ y + this.chartOffset.top - this.overlayContext.lineWidth,
+ w + this.overlayContext.lineWidth*2,
+ h + this.overlayContext.lineWidth*2);
+
+ this.prevSelection = null;
+ },
+ /**
+ * Function: setSelection
+ *
+ * Parameters:
+ * Area - {Object} area represented as a range like: {x1: 3, y1: 3, x2: 4, y2: 8}
+ *
+ * Description:
+ * Sets the current graph selection to the provided range. Calls <drawSelection> and
+ * <triggerSelectedEvent> functions internally.
+ */
+ setSelection: function(area) {
+ this.clearSelection();
+
+ if (this.options.selection.mode == "x") {
+ this.selection.first.y = 0;
+ this.selection.second.y = this.chartHeight;
+ }
+ else {
+ this.selection.first.y = (this.yaxis.max - area.y1) * this.vertScale;
+ this.selection.second.y = (this.yaxis.max - area.y2) * this.vertScale;
+ }
+ if (this.options.selection.mode == "y") {
+ this.selection.first.x = 0;
+ this.selection.second.x = this.chartWidth;
+ }
+ else {
+ this.selection.first.x = (area.x1 - this.xaxis.min) * this.hozScale;
+ this.selection.second.x = (area.x2 - this.xaxis.min) * this.hozScale;
+ }
+
+ this.drawSelection();
+ this.triggerSelectedEvent();
+ },
+ /**
+ * Function: drawSelection
+ * Description: Internal function called to draw the selection made on the graph.
+ */
+ drawSelection: function() {
+ if (this.prevSelection != null &&
+ this.selection.first.x == this.prevSelection.first.x &&
+ this.selection.first.y == this.prevSelection.first.y &&
+ this.selection.second.x == this.prevSelection.second.x &&
+ this.selection.second.y == this.prevSelection.second.y)
+ {
+ return;
+ }
+
+ this.overlayContext.strokeStyle = this.parseColor(this.options.selection.color).scale(null, null, null, 0.8).toString();
+ this.overlayContext.lineWidth = 1;
+ this.context.lineJoin = "round";
+ this.overlayContext.fillStyle = this.parseColor(this.options.selection.color).scale(null, null, null, 0.4).toString();
+
+ this.prevSelection = { first: { x: this.selection.first.x,
+ y: this.selection.first.y },
+ second: { x: this.selection.second.x,
+ y: this.selection.second.y } };
+
+ var x = Math.min(this.selection.first.x, this.selection.second.x),
+ y = Math.min(this.selection.first.y, this.selection.second.y),
+ w = Math.abs(this.selection.second.x - this.selection.first.x),
+ h = Math.abs(this.selection.second.y - this.selection.first.y);
+
+ this.overlayContext.fillRect(x + this.chartOffset.left, y + this.chartOffset.top, w, h);
+ this.overlayContext.strokeRect(x + this.chartOffset.left, y + this.chartOffset.top, w, h);
+ },
+ /**
+ * Internal function
+ */
+ selectionIsSane: function() {
+ var minSize = 5;
+ return Math.abs(this.selection.second.x - this.selection.first.x) >= minSize &&
+ Math.abs(this.selection.second.y - this.selection.first.y) >= minSize;
+ },
+ /**
+ * Internal function that formats the track. This is the format the text is shown when mouse
+ * tracking is enabled.
+ */
+ defaultTrackFormatter: function(val)
+ {
+ return '['+val.x+', '+val.y+']';
+ },
+ /**
+ * Function: clearHit
+ */
+ clearHit: function(){
+ if(this.prevHit){
+ this.overlayContext.clearRect(
+ this.translateHoz(this.prevHit.x) + this.chartOffset.left - this.options.mouse.radius*2,
+ this.translateVert(this.prevHit.y) + this.chartOffset.top - this.options.mouse.radius*2,
+ this.options.mouse.radius*3 + this.options.points.lineWidth*3,
+ this.options.mouse.radius*3 + this.options.points.lineWidth*3
+ );
+ this.prevHit = null;
+ }
+ },
+ /**
+ * Function: hit
+ *
+ * Parameters:
+ * event - {Object} event object
+ * mouse - {Object} mouse object that is used to keep track of mouse movement
+ *
+ * Description:
+ * If hit occurs this function will fire a ProtoChart:hit event.
+ */
+ hit: function(event, mouse){
+ /**
+ * Nearest data element.
+ */
+ var n = {
+ dist:Number.MAX_VALUE,
+ x:null,
+ y:null,
+ mouse:null
+ };
+
+
+ for(var i = 0, data, xsens, ysens; i < this.graphData.length; i++){
+ if(!this.graphData[i].mouse.track) continue;
+ data = this.graphData[i].data;
+ xsens = (this.hozScale*this.graphData[i].mouse.sensibility);
+ ysens = (this.vertScale*this.graphData[i].mouse.sensibility);
+ for(var j = 0, xabs, yabs; j < data.length; j++){
+ xabs = this.hozScale*Math.abs(data[j][0] - mouse.x);
+ yabs = this.vertScale*Math.abs(data[j][1] - mouse.y);
+
+ if(xabs < xsens && yabs < ysens && (xabs+yabs) < n.dist){
+ n.dist = (xabs+yabs);
+ n.x = data[j][0];
+ n.y = data[j][1];
+ n.mouse = this.graphData[i].mouse;
+ }
+ }
+ }
+
+ if(n.mouse && n.mouse.track && !this.prevHit || (this.prevHit && n.x != this.prevHit.x && n.y != this.prevHit.y)){
+ var el = this.domObj.select('.'+this.options.mouse.clsName).first();
+ if(!el){
+ var pos = '', p = this.options.mouse.position, m = this.options.mouse.margin;
+ if(p.charAt(0) == 'n') pos += 'top:' + (m + this.chartOffset.top) + 'px;';
+ else if(p.charAt(0) == 's') pos += 'bottom:' + (m + this.chartOffset.bottom) + 'px;';
+ if(p.charAt(1) == 'e') pos += 'right:' + (m + this.chartOffset.right) + 'px;';
+ else if(p.charAt(1) == 'w') pos += 'left:' + (m + this.chartOffset.bottom) + 'px;';
+
+ this.domObj.insert('<div class="'+this.options.mouse.clsName+'" style="display:none;position:absolute;'+pos+'"></div>');
+ return;
+ }
+ if(n.x !== null && n.y !== null){
+ el.setStyle({display:'block'});
+
+ this.clearHit();
+ if(n.mouse.lineColor != null){
+ this.overlayContext.save();
+ this.overlayContext.translate(this.chartOffset.left, this.chartOffset.top);
+ this.overlayContext.lineWidth = this.options.points.lineWidth;
+ this.overlayContext.strokeStyle = n.mouse.lineColor;
+ this.overlayContext.fillStyle = '#ffffff';
+ this.overlayContext.beginPath();
+
+
+ this.overlayContext.arc(this.translateHoz(n.x), this.translateVert(n.y), this.options.mouse.radius, 0, 2 * Math.PI, true);
+ this.overlayContext.fill();
+ this.overlayContext.stroke();
+ this.overlayContext.restore();
+ }
+ this.prevHit = n;
+
+ var decimals = n.mouse.trackDecimals;
+ if(decimals == null || decimals < 0) decimals = 0;
+ if(!this.options.mouse.fixedPosition)
+ {
+ el.setStyle({
+ left: (this.translateHoz(n.x) + this.options.mouse.radius + 10) + "px",
+ top: (this.translateVert(n.y) + this.options.mouse.radius + 10) + "px"
+ });
+ }
+ el.innerHTML = n.mouse.trackFormatter({x: n.x.toFixed(decimals), y: n.y.toFixed(decimals)});
+ this.domObj.fire( 'ProtoChart:hit', [n] )
+ }else if(this.options.prevHit){
+ el.setStyle({display:'none'});
+ this.clearHit();
+ }
+ }
+ },
+ /**
+ * Internal function
+ */
+ floorInBase: function(n, base) {
+ return base * Math.floor(n / base);
+ },
+ /**
+ * Function: extractColor
+ *
+ * Parameters:
+ * element - HTML element or ID of an HTML element
+ *
+ * Returns:
+ * color in string format
+ */
+ extractColor: function(element)
+ {
+ var color;
+ do
+ {
+ color = $(element).getStyle('background-color').toLowerCase();
+ if(color != '' && color != 'transparent')
+ {
+ break;
+ }
+ element = element.up(0); //or else just get the parent ....
+ } while(element.nodeName.toLowerCase() != 'body');
+
+ //safari fix
+ if(color == 'rgba(0, 0, 0, 0)')
+ return 'transparent';
+ return color;
+ },
+ /**
+ * Function: parseColor
+ *
+ * Parameters:
+ * str - color string in different formats
+ *
+ * Returns:
+ * a Proto.Color Object - use toString() function to retreive the color in rgba/rgb format
+ */
+ parseColor: function(str)
+ {
+ var result;
+
+ /**
+ * rgb(num,num,num)
+ */
+ if((result = /rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(str)))
+ return new Proto.Color(parseInt(result[1]), parseInt(result[2]), parseInt(result[3]));
+
+ /**
+ * rgba(num,num,num,num)
+ */
+ if((result = /rgba\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(str)))
+ return new Proto.Color(parseInt(result[1]), parseInt(result[2]), parseInt(result[3]), parseFloat(result[4]));
+
+ /**
+ * rgb(num%,num%,num%)
+ */
+ if((result = /rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(str)))
+ return new Proto.Color(parseFloat(result[1])*2.55, parseFloat(result[2])*2.55, parseFloat(result[3])*2.55);
+
+ /**
+ * rgba(num%,num%,num%,num)
+ */
+ if((result = /rgba\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(str)))
+ return new Proto.Color(parseFloat(result[1])*2.55, parseFloat(result[2])*2.55, parseFloat(result[3])*2.55, parseFloat(result[4]));
+
+ /**
+ * #a0b1c2
+ */
+ if((result = /#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(str)))
+ return new Proto.Color(parseInt(result[1],16), parseInt(result[2],16), parseInt(result[3],16));
+
+ /**
+ * #fff
+ */
+ if((result = /#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(str)))
+ return new Proto.Color(parseInt(result[1]+result[1],16), parseInt(result[2]+result[2],16), parseInt(result[3]+result[3],16));
+
+ /**
+ * Otherwise, check if user wants transparent .. or we just return a standard color;
+ */
+ var name = str.strip().toLowerCase();
+ if(name == 'transparent'){
+ return new Proto.Color(255, 255, 255, 0);
+ }
+
+ return new Proto.Color(100,100,100, 1);
+
+ }
+});
+
+if(!Proto) var Proto = {};
+
+/**
+ * Class: Proto.Color
+ *
+ * Helper class that manipulates colors using RGBA values.
+ *
+ */
+
+Proto.Color = Class.create({
+ initialize: function(r, g, b, a) {
+ this.rgba = ['r', 'g', 'b', 'a'];
+ var x = 4;
+ while(-1<--x) {
+ this[this.rgba[x]] = arguments[x] || ((x==3) ? 1.0 : 0);
+ }
+ },
+ toString: function() {
+ if(this.a >= 1.0) {
+ return "rgb(" + [this.r, this.g, this.b].join(",") +")";
+ }
+ else {
+ return "rgba("+[this.r, this.g, this.b, this.a].join(",")+")";
+ }
+ },
+ scale: function(rf, gf, bf, af) {
+ x = 4;
+ while(-1<--x) {
+ if(arguments[x] != null) {
+ this[this.rgba[x]] *= arguments[x];
+ }
+ }
+ return this.normalize();
+ },
+ adjust: function(rd, gd, bd, ad) {
+ x = 4; //rgba.length
+ while (-1<--x) {
+ if (arguments[x] != null)
+ this[this.rgba[x]] += arguments[x];
+ }
+ return this.normalize();
+ },
+ clone: function() {
+ return new Proto.Color(this.r, this.b, this.g, this.a);
+ },
+ limit: function(val,minVal,maxVal) {
+ return Math.max(Math.min(val, maxVal), minVal);
+ },
+ normalize: function() {
+ this.r = this.limit(parseInt(this.r), 0, 255);
+ this.g = this.limit(parseInt(this.g), 0, 255);
+ this.b = this.limit(parseInt(this.b), 0, 255);
+ this.a = this.limit(this.a, 0, 1);
+ return this;
+ }
+}); \ No newline at end of file
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