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view client/digitallibrary/jquery/svg/jquery.svggraph.js @ 880:ca6b8c970ea1 jquery
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author | hertzhaft |
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date | Thu, 17 Mar 2011 20:25:56 +0100 |
parents | ccf67eaf97ee |
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/* http://keith-wood.name/svg.html SVG graphing extension for jQuery v1.4.3. Written by Keith Wood (kbwood{at}iinet.com.au) August 2007. Dual licensed under the GPL (http://dev.jquery.com/browser/trunk/jquery/GPL-LICENSE.txt) and MIT (http://dev.jquery.com/browser/trunk/jquery/MIT-LICENSE.txt) licenses. Please attribute the author if you use it. */ (function($) { // Hide scope, no $ conflict $.svg.addExtension('graph', SVGGraph); // Singleton primary SVG graphing interface $.svg.graphing = new SVGGraphing(); function SVGGraphing() { this.regional = []; this.regional[''] = {percentageText: 'Percentage'}; this.region = this.regional['']; } $.extend(SVGGraphing.prototype, { _chartTypes: [], /* Add a new chart rendering type to the package. The rendering object must implement the following functions: getTitle(), getDescription(), getOptions(), drawChart(graph). @param id (string) the ID of this graph renderer @param chartType (object) the object implementing this chart type */ addChartType: function(id, chartType) { this._chartTypes[id] = chartType; }, /* Retrieve the list of chart types. @return (object[string]) the array of chart types indexed by ID */ chartTypes: function() { return this._chartTypes; } }); /* Extension point for SVG graphing. Access through svg.graph. */ function SVGGraph(wrapper) { this._wrapper = wrapper; // The attached SVG wrapper object this._drawNow = false; // True for immediate update, false to wait for redraw call for (var id in $.svg.graphing._chartTypes) { this._chartType = $.svg.graphing._chartTypes[id]; // Use first graph renderer break; } this._chartOptions = {}; // Extra options for the graph type // The graph title and settings this._title = {value: '', offset: 25, settings: {textAnchor: 'middle'}}; this._area = [0.1, 0.1, 0.8, 0.9]; // The chart area: left, top, right, bottom, // > 1 in pixels, <= 1 as proportion this._chartFormat = {fill: 'none', stroke: 'black'}; // The formatting for the chart area this._gridlines = []; // The formatting of the x- and y-gridlines this._series = []; // The series to be plotted, each is an object this._onstatus = null; // The callback function for status updates this._chartCont = this._wrapper.svg(0, 0, 0, 0, {class_: 'svg-graph'}); // The main container for the graph this.xAxis = new SVGGraphAxis(this); // The main x-axis this.xAxis.title('', 40); this.yAxis = new SVGGraphAxis(this); // The main y-axis this.yAxis.title('', 40); this.x2Axis = null; // The secondary x-axis this.y2Axis = null; // The secondary y-axis this.legend = new SVGGraphLegend(this); // The chart legend this._drawNow = true; } $.extend(SVGGraph.prototype, { /* Useful indexes. */ X: 0, Y: 1, W: 2, H: 3, L: 0, T: 1, R: 2, B: 3, /* Standard percentage axis. */ _percentageAxis: new SVGGraphAxis(this, $.svg.graphing.region.percentageText, 0, 100, 10, 0), /* Set or retrieve the container for the graph. @param cont (SVG element) the container for the graph @return (SVGGraph) this graph object or (SVG element) the current container (if no parameters) */ container: function(cont) { if (arguments.length == 0) { return this._chartCont; } this._chartCont = cont; return this; }, /* Set or retrieve the type of chart to be rendered. See $.svg.graphing.getChartTypes() for the list of available types. @param id (string) the ID of the chart type @param options (object) additional settings for this chart type (optional) @return (SVGGraph) this graph object or (string) the chart type (if no parameters) @deprecated use type() */ chartType: function(id, options) { return (arguments.length == 0 ? this.type() : this.type(id, options)); }, /* Set or retrieve the type of chart to be rendered. See $.svg.graphing.getChartTypes() for the list of available types. @param id (string) the ID of the chart type @param options (object) additional settings for this chart type (optional) @return (SVGGraph) this graph object or (string) the chart type (if no parameters) */ type: function(id, options) { if (arguments.length == 0) { return this._chartType; } var chartType = $.svg.graphing._chartTypes[id]; if (chartType) { this._chartType = chartType; this._chartOptions = $.extend({}, options || {}); } this._drawGraph(); return this; }, /* Set or retrieve additional options for the particular chart type. @param options (object) the extra options @return (SVGGraph) this graph object or (object) the chart options (if no parameters) @deprecated use options() */ chartOptions: function(options) { return(arguments.length == 0 ? this.options() : this.options(options)); }, /* Set or retrieve additional options for the particular chart type. @param options (object) the extra options @return (SVGGraph) this graph object or (object) the chart options (if no parameters) */ options: function(options) { if (arguments.length == 0) { return this._chartOptions; } this._chartOptions = $.extend({}, options); this._drawGraph(); return this; }, /* Set or retrieve the background of the graph chart. @param fill (string) how to fill the chart background @param stroke (string) the colour of the outline (optional) @param settings (object) additional formatting for the chart background (optional) @return (SVGGraph) this graph object or (object) the chart format (if no parameters) @deprecated use format() */ chartFormat: function(fill, stroke, settings) { return (arguments.length == 0 ? this.format() : this.format(fill, stroke, settings)); }, /* Set or retrieve the background of the graph chart. @param fill (string) how to fill the chart background @param stroke (string) the colour of the outline (optional) @param settings (object) additional formatting for the chart background (optional) @return (SVGGraph) this graph object or (object) the chart format (if no parameters) */ format: function(fill, stroke, settings) { if (arguments.length == 0) { return this._chartFormat; } if (typeof stroke == 'object') { settings = stroke; stroke = null; } this._chartFormat = $.extend({fill: fill}, (stroke ? {stroke: stroke} : {}), settings || {}); this._drawGraph(); return this; }, /* Set or retrieve the main chart area. @param left (number) > 1 is pixels, <= 1 is proportion of width or (number[4]) for left, top, right, bottom @param top (number) > 1 is pixels, <= 1 is proportion of height @param right (number) > 1 is pixels, <= 1 is proportion of width @param bottom (number) > 1 is pixels, <= 1 is proportion of height @return (SVGGraph) this graph object or (number[4]) the chart area: left, top, right, bottom (if no parameters) @deprecated use area() */ chartArea: function(left, top, right, bottom) { return (arguments.length == 0 ? this.area() : this.area(left, top, right, bottom)); }, /* Set or retrieve the main chart area. @param left (number) > 1 is pixels, <= 1 is proportion of width or (number[4]) for left, top, right, bottom @param top (number) > 1 is pixels, <= 1 is proportion of height @param right (number) > 1 is pixels, <= 1 is proportion of width @param bottom (number) > 1 is pixels, <= 1 is proportion of height @return (SVGGraph) this graph object or (number[4]) the chart area: left, top, right, bottom (if no parameters) */ area: function(left, top, right, bottom) { if (arguments.length == 0) { return this._area; } this._area = (isArray(left) ? left : [left, top, right, bottom]); this._drawGraph(); return this; }, /* Set or retrieve the gridlines formatting for the graph chart. @param xSettings (string) the colour of the gridlines along the x-axis, or (object) formatting for the gridlines along the x-axis, or null for none @param ySettings (string) the colour of the gridlines along the y-axis, or (object) formatting for the gridlines along the y-axis, or null for none @return (SVGGraph) this graph object or (object[2]) the gridlines formatting (if no parameters) */ gridlines: function(xSettings, ySettings) { if (arguments.length == 0) { return this._gridlines; } this._gridlines = [(typeof xSettings == 'string' ? {stroke: xSettings} : xSettings), (typeof ySettings == 'string' ? {stroke: ySettings} : ySettings)]; if (this._gridlines[0] == null && this._gridlines[1] == null) { this._gridlines = []; } this._drawGraph(); return this; }, /* Set or retrieve the title of the graph and its formatting. @param value (string) the title @param offset (number) the vertical positioning of the title > 1 is pixels, <= 1 is proportion of width (optional) @param colour (string) the colour of the title (optional) @param settings (object) formatting for the title (optional) @return (SVGGraph) this graph object or (object) value, offset, and settings for the title (if no parameters) */ title: function(value, offset, colour, settings) { if (arguments.length == 0) { return this._title; } if (typeof offset != 'number') { settings = colour; colour = offset; offset = null; } if (typeof colour != 'string') { settings = colour; colour = null; } this._title = {value: value, offset: offset || this._title.offset, settings: $.extend({textAnchor: 'middle'}, (colour ? {fill: colour} : {}), settings || {})}; this._drawGraph(); return this; }, /* Add a series of values to be plotted on the graph. @param name (string) the name of this series (optional) @param values (number[]) the values to be plotted @param fill (string) how the plotted values are filled @param stroke (string) the colour of the plotted lines (optional) @param strokeWidth (number) the width of the plotted lines (optional) @param settings (object) additional settings for the plotted values (optional) @return (SVGGraph) this graph object */ addSeries: function(name, values, fill, stroke, strokeWidth, settings) { this._series.push(new SVGGraphSeries( this, name, values, fill, stroke, strokeWidth, settings)); this._drawGraph(); return this; }, /* Retrieve the series wrappers. @param i (number) the series index (optional) @return (SVGGraphSeries) the specified series or (SVGGraphSeries[]) the list of series */ series: function(i) { return (arguments.length > 0 ? this._series[i] : null) || this._series; }, /* Suppress drawing of the graph until redraw() is called. @return (SVGGraph) this graph object */ noDraw: function() { this._drawNow = false; return this; }, /* Redraw the entire graph with the current settings and values. @return (SVGGraph) this graph object */ redraw: function() { this._drawNow = true; this._drawGraph(); return this; }, /* Set the callback function for status updates. @param onstatus (function) the callback function @return (SVGGraph) this graph object */ status: function(onstatus) { this._onstatus = onstatus; return this; }, /* Actually draw the graph (if allowed) based on the graph type set. */ _drawGraph: function() { if (!this._drawNow) { return; } while (this._chartCont.firstChild) { this._chartCont.removeChild(this._chartCont.firstChild); } if (!this._chartCont.parent) { this._wrapper._svg.appendChild(this._chartCont); } // Set sizes if not already there if (!this._chartCont.width) { this._chartCont.setAttribute('width', parseInt(this._chartCont.getAttribute('width'), 10) || this._wrapper._width()); } else if (this._chartCont.width.baseVal) { this._chartCont.width.baseVal.value = this._chartCont.width.baseVal.value || this._wrapper._width(); } else { this._chartCont.width = this._chartCont.width || this._wrapper._width(); } if (!this._chartCont.height) { this._chartCont.setAttribute('height', parseInt(this._chartCont.getAttribute('height'), 10) || this._wrapper._height()); } else if (this._chartCont.height.baseVal) { this._chartCont.height.baseVal.value = this._chartCont.height.baseVal.value || this._wrapper._height(); } else { this._chartCont.height = this._chartCont.height || this._wrapper._height(); } this._chartType.drawGraph(this); }, /* Decode an attribute value. @param node the node to examine @param name the attribute name @return the actual value */ _getValue: function(node, name) { return (!node[name] ? parseInt(node.getAttribute(name), 10) : (node[name].baseVal ? node[name].baseVal.value : node[name])); }, /* Draw the graph title - centred. */ _drawTitle: function() { this._wrapper.text(this._chartCont, this._getValue(this._chartCont, 'width') / 2, this._title.offset, this._title.value, this._title.settings); }, /* Calculate the actual dimensions of the chart area. @param area (number[4]) the area values to evaluate (optional) @return (number[4]) an array of dimension values: left, top, width, height */ _getDims: function(area) { area = area || this._area; var availWidth = this._getValue(this._chartCont, 'width'); var availHeight = this._getValue(this._chartCont, 'height'); var left = (area[this.L] > 1 ? area[this.L] : availWidth * area[this.L]); var top = (area[this.T] > 1 ? area[this.T] : availHeight * area[this.T]); var width = (area[this.R] > 1 ? area[this.R] : availWidth * area[this.R]) - left; var height = (area[this.B] > 1 ? area[this.B] : availHeight * area[this.B]) - top; return [left, top, width, height]; }, /* Draw the chart background, including gridlines. @param noXGrid (boolean) true to suppress the x-gridlines, false to draw them (optional) @param noYGrid (boolean) true to suppress the y-gridlines, false to draw them (optional) @return (element) the background group element */ _drawChartBackground: function(noXGrid, noYGrid) { var bg = this._wrapper.group(this._chartCont, {class_: 'background'}); var dims = this._getDims(); this._wrapper.rect(bg, dims[this.X], dims[this.Y], dims[this.W], dims[this.H], this._chartFormat); if (this._gridlines[0] && this.yAxis._ticks.major && !noYGrid) { this._drawGridlines(bg, this.yAxis, true, dims, this._gridlines[0]); } if (this._gridlines[1] && this.xAxis._ticks.major && !noXGrid) { this._drawGridlines(bg, this.xAxis, false, dims, this._gridlines[1]); } return bg; }, /* Draw one set of gridlines. @param bg (element) the background group element @param axis (SVGGraphAxis) the axis definition @param horiz (boolean) true if horizontal, false if vertical @param dims (number[]) the left, top, width, height of the chart area @param format (object) additional settings for the gridlines */ _drawGridlines: function(bg, axis, horiz, dims, format) { var g = this._wrapper.group(bg, format); var scale = (horiz ? dims[this.H] : dims[this.W]) / (axis._scale.max - axis._scale.min); var major = Math.floor(axis._scale.min / axis._ticks.major) * axis._ticks.major; major = (major < axis._scale.min ? major + axis._ticks.major : major); while (major <= axis._scale.max) { var v = (horiz ? axis._scale.max - major : major - axis._scale.min) * scale + (horiz ? dims[this.Y] : dims[this.X]); this._wrapper.line(g, (horiz ? dims[this.X] : v), (horiz ? v : dims[this.Y]), (horiz ? dims[this.X] + dims[this.W] : v), (horiz ? v : dims[this.Y] + dims[this.H])); major += axis._ticks.major; } }, /* Draw the axes in their standard configuration. @param noX (boolean) true to suppress the x-axes, false to draw it (optional) */ _drawAxes: function(noX) { var dims = this._getDims(); if (this.xAxis && !noX) { if (this.xAxis._title) { this._wrapper.text(this._chartCont, dims[this.X] + dims[this.W] / 2, dims[this.Y] + dims[this.H] + this.xAxis._titleOffset, this.xAxis._title, this.xAxis._titleFormat); } this._drawAxis(this.xAxis, 'xAxis', dims[this.X], dims[this.Y] + dims[this.H], dims[this.X] + dims[this.W], dims[this.Y] + dims[this.H]); } if (this.yAxis) { if (this.yAxis._title) { this._wrapper.text(this._chartCont, 0, 0, this.yAxis._title, $.extend({textAnchor: 'middle', transform: 'translate(' + (dims[this.X] - this.yAxis._titleOffset) + ',' + (dims[this.Y] + dims[this.H] / 2) + ') rotate(-90)'}, this.yAxis._titleFormat || {})); } this._drawAxis(this.yAxis, 'yAxis', dims[this.X], dims[this.Y], dims[this.X], dims[this.Y] + dims[this.H]); } if (this.x2Axis && !noX) { if (this.x2Axis._title) { this._wrapper.text(this._chartCont, dims[this.X] + dims[this.W] / 2, dims[this.X] - this.x2Axis._titleOffset, this.x2Axis._title, this.x2Axis._titleFormat); } this._drawAxis(this.x2Axis, 'x2Axis', dims[this.X], dims[this.Y], dims[this.X] + dims[this.W], dims[this.Y]); } if (this.y2Axis) { if (this.y2Axis._title) { this._wrapper.text(this._chartCont, 0, 0, this.y2Axis._title, $.extend({textAnchor: 'middle', transform: 'translate(' + (dims[this.X] + dims[this.W] + this.y2Axis._titleOffset) + ',' + (dims[this.Y] + dims[this.H] / 2) + ') rotate(-90)'}, this.y2Axis._titleFormat || {})); } this._drawAxis(this.y2Axis, 'y2Axis', dims[this.X] + dims[this.W], dims[this.Y], dims[this.X] + dims[this.W], dims[this.Y] + dims[this.H]); } }, /* Draw an axis and its tick marks. @param axis (SVGGraphAxis) the axis definition @param id (string) the identifier for the axis group element @param x1 (number) starting x-coodinate for the axis @param y1 (number) starting y-coodinate for the axis @param x2 (number) ending x-coodinate for the axis @param y2 (number) ending y-coodinate for the axis */ _drawAxis: function(axis, id, x1, y1, x2, y2) { var horiz = (y1 == y2); var gl = this._wrapper.group(this._chartCont, $.extend({class_: id}, axis._lineFormat)); var gt = this._wrapper.group(this._chartCont, $.extend({class_: id + 'Labels', textAnchor: (horiz ? 'middle' : 'end')}, axis._labelFormat)); this._wrapper.line(gl, x1, y1, x2, y2); if (axis._ticks.major) { var bottomRight = (x2 > (this._getValue(this._chartCont, 'width') / 2) && y2 > (this._getValue(this._chartCont, 'height') / 2)); var scale = (horiz ? x2 - x1 : y2 - y1) / (axis._scale.max - axis._scale.min); var size = axis._ticks.size; var major = Math.floor(axis._scale.min / axis._ticks.major) * axis._ticks.major; major = (major < axis._scale.min ? major + axis._ticks.major : major); var minor = (!axis._ticks.minor ? axis._scale.max + 1 : Math.floor(axis._scale.min / axis._ticks.minor) * axis._ticks.minor); minor = (minor < axis._scale.min ? minor + axis._ticks.minor : minor); var offsets = this._getTickOffsets(axis, bottomRight); var count = 0; while (major <= axis._scale.max || minor <= axis._scale.max) { var cur = Math.min(major, minor); var len = (cur == major ? size : size / 2); var v = (horiz ? x1 : y1) + (horiz ? cur - axis._scale.min : axis._scale.max - cur) * scale; this._wrapper.line(gl, (horiz ? v : x1 + len * offsets[0]), (horiz ? y1 + len * offsets[0] : v), (horiz ? v : x1 + len * offsets[1]), (horiz ? y1 + len * offsets[1] : v)); if (cur == major) { this._wrapper.text(gt, (horiz ? v : x1 - size), (horiz ? y1 + 2 * size : v), (axis._labels ? axis._labels[count++] : '' + cur)); } major += (cur == major ? axis._ticks.major : 0); minor += (cur == minor ? axis._ticks.minor : 0); } } }, /* Calculate offsets based on axis and tick positions. @param axis (SVGGraphAxis) the axis definition @param bottomRight (boolean) true if this axis is appearing on the bottom or right of the chart area, false if to the top or left @return (number[2]) the array of offset multipliers (-1..+1) */ _getTickOffsets: function(axis, bottomRight) { return [(axis._ticks.position == (bottomRight ? 'in' : 'out') || axis._ticks.position == 'both' ? -1 : 0), (axis._ticks.position == (bottomRight ? 'out' : 'in') || axis._ticks.position == 'both' ? +1 : 0), ]; }, /* Retrieve the standard percentage axis. @return (SVGGraphAxis) percentage axis */ _getPercentageAxis: function() { this._percentageAxis._title = $.svg.graphing.region.percentageText; return this._percentageAxis; }, /* Calculate the column totals across all the series. */ _getTotals: function() { var totals = []; var numVal = (this._series.length ? this._series[0]._values.length : 0); for (var i = 0; i < numVal; i++) { totals[i] = 0; for (var j = 0; j < this._series.length; j++) { totals[i] += this._series[j]._values[i]; } } return totals; }, /* Draw the chart legend. */ _drawLegend: function() { if (!this.legend._show) { return; } var g = this._wrapper.group(this._chartCont, {class_: 'legend'}); var dims = this._getDims(this.legend._area); this._wrapper.rect(g, dims[this.X], dims[this.Y], dims[this.W], dims[this.H], this.legend._bgSettings); var horiz = dims[this.W] > dims[this.H]; var numSer = this._series.length; var offset = (horiz ? dims[this.W] : dims[this.H]) / numSer; var xBase = dims[this.X] + 5; var yBase = dims[this.Y] + ((horiz ? dims[this.H] : offset) + this.legend._sampleSize) / 2; for (var i = 0; i < numSer; i++) { var series = this._series[i]; this._wrapper.rect(g, xBase + (horiz ? i * offset : 0), yBase + (horiz ? 0 : i * offset) - this.legend._sampleSize, this.legend._sampleSize, this.legend._sampleSize, {fill: series._fill, stroke: series._stroke, strokeWidth: 1}); this._wrapper.text(g, xBase + (horiz ? i * offset : 0) + this.legend._sampleSize + 5, yBase + (horiz ? 0 : i * offset), series._name, this.legend._textSettings); } }, /* Show the current value status on hover. */ _showStatus: function(elem, label, value) { var status = this._onstatus; if (this._onstatus) { $(elem).hover(function() { status.apply(this, [label, value]); }, function() { status.apply(this, ['', 0]); }); } } }); /* Details about each graph series. @param graph (SVGGraph) the owning graph @param name (string) the name of this series (optional) @param values (number[]) the list of values to be plotted @param fill (string) how the series should be displayed @param stroke (string) the colour of the (out)line for the series (optional) @param strokeWidth (number) the width of the (out)line for the series (optional) @param settings (object) additional formatting settings (optional) @return (SVGGraphSeries) the new series object */ function SVGGraphSeries(graph, name, values, fill, stroke, strokeWidth, settings) { if (typeof name != 'string') { settings = strokeWidth; strokeWidth = stroke; stroke = fill; fill = values; values = name; name = null; } if (typeof stroke != 'string') { settings = strokeWidth; strokeWidth = stroke; stroke = null; } if (typeof strokeWidth != 'number') { settings = strokeWidth; strokeWidth = null; } this._graph = graph; // The owning graph this._name = name || ''; // The name of this series this._values = values || []; // The list of values for this series this._axis = 1; // Which axis this series applies to: 1 = primary, 2 = secondary this._fill = fill || 'green'; // How the series is plotted this._stroke = stroke || 'black'; // The colour for the (out)line this._strokeWidth = strokeWidth || 1; // The (out)line width this._settings = settings || {}; // Additional formatting settings for the series } $.extend(SVGGraphSeries.prototype, { /* Set or retrieve the name for this series. @param name (string) the series' name @return (SVGGraphSeries) this series object or (string) the series name (if no parameters) */ name: function(name) { if (arguments.length == 0) { return this._name; } this._name = name; this._graph._drawGraph(); return this; }, /* Set or retrieve the values for this series. @param name (string) the series' name (optional) @param values (number[]) the values to be graphed @return (SVGGraphSeries) this series object or (number[]) the series values (if no parameters) */ values: function(name, values) { if (arguments.length == 0) { return this._values; } if (isArray(name)) { values = name; name = null; } this._name = name || this._name; this._values = values; this._graph._drawGraph(); return this; }, /* Set or retrieve the formatting for this series. @param fill (string) how the values are filled when plotted @param stroke (string) the (out)line colour (optional) @param strokeWidth (number) the line's width (optional) @param settings (object) additional formatting settings for the series (optional) @return (SVGGraphSeries) this series object or (object) formatting settings (if no parameters) */ format: function(fill, stroke, strokeWidth, settings) { if (arguments.length == 0) { return $.extend({fill: this._fill, stroke: this._stroke, strokeWidth: this._strokeWidth}, this._settings); } if (typeof stroke != 'string') { settings = strokeWidth; strokeWidth = stroke; stroke = null; } if (typeof strokeWidth != 'number') { settings = strokeWidth; strokeWidth = null; } this._fill = fill || this._fill; this._stroke = stroke || this._stroke; this._strokeWidth = strokeWidth || this._strokeWidth; $.extend(this._settings, settings || {}); this._graph._drawGraph(); return this; }, /* Return to the parent graph. */ end: function() { return this._graph; } }); /* Details about each graph axis. @param graph (SVGGraph) the owning graph @param title (string) the title of the axis @param min (number) the minimum value displayed on this axis @param max (number) the maximum value displayed on this axis @param major (number) the distance between major ticks @param minor (number) the distance between minor ticks (optional) @return (SVGGraphAxis) the new axis object */ function SVGGraphAxis(graph, title, min, max, major, minor) { this._graph = graph; // The owning graph this._title = title || ''; // Title of this axis this._titleFormat = {}; // Formatting settings for the title this._titleOffset = 0; // The offset for positioning the title this._labels = null; // List of labels for this axis - one per possible value across all series this._labelFormat = {}; // Formatting settings for the labels this._lineFormat = {stroke: 'black', strokeWidth: 1}; // Formatting settings for the axis lines this._ticks = {major: major || 10, minor: minor || 0, size: 10, position: 'out'}; // Tick mark options this._scale = {min: min || 0, max: max || 100}; // Axis scale settings this._crossAt = 0; // Where this axis crosses the other one } $.extend(SVGGraphAxis.prototype, { /* Set or retrieve the scale for this axis. @param min (number) the minimum value shown @param max (number) the maximum value shown @return (SVGGraphAxis) this axis object or (object) min and max values (if no parameters) */ scale: function(min, max) { if (arguments.length == 0) { return this._scale; } this._scale.min = min; this._scale.max = max; this._graph._drawGraph(); return this; }, /* Set or retrieve the ticks for this axis. @param major (number) the distance between major ticks @param minor (number) the distance between minor ticks @param size (number) the length of the major ticks (minor are half) (optional) @param position (string) the location of the ticks: 'in', 'out', 'both' (optional) @return (SVGGraphAxis) this axis object or (object) major, minor, size, and position values (if no parameters) */ ticks: function(major, minor, size, position) { if (arguments.length == 0) { return this._ticks; } if (typeof size == 'string') { position = size; size = null; } this._ticks.major = major; this._ticks.minor = minor; this._ticks.size = size || this._ticks.size; this._ticks.position = position || this._ticks.position; this._graph._drawGraph(); return this; }, /* Set or retrieve the title for this axis. @param title (string) the title text @param offset (number) the distance to offset the title position (optional) @param colour (string) how to colour the title (optional) @param format (object) formatting settings for the title (optional) @return (SVGGraphAxis) this axis object or (object) title, offset, and format values (if no parameters) */ title: function(title, offset, colour, format) { if (arguments.length == 0) { return {title: this._title, offset: this._titleOffset, format: this._titleFormat}; } if (typeof offset != 'number') { format = colour; colour = offset; offset = null; } if (typeof colour != 'string') { format = colour; colour = null; } this._title = title; this._titleOffset = (offset != null ? offset : this._titleOffset); if (colour || format) { this._titleFormat = $.extend(format || {}, (colour ? {fill: colour} : {})); } this._graph._drawGraph(); return this; }, /* Set or retrieve the labels for this axis. @param labels (string[]) the text for each entry @param colour (string) how to colour the labels (optional) @param format (object) formatting settings for the labels (optional) @return (SVGGraphAxis) this axis object or (object) labels and format values (if no parameters) */ labels: function(labels, colour, format) { if (arguments.length == 0) { return {labels: this._labels, format: this._labelFormat}; } if (typeof colour != 'string') { format = colour; colour = null; } this._labels = labels; if (colour || format) { this._labelFormat = $.extend(format || {}, (colour ? {fill: colour} : {})); } this._graph._drawGraph(); return this; }, /* Set or retrieve the line formatting for this axis. @param colour (string) the line's colour @param width (number) the line's width (optional) @param settings (object) additional formatting settings for the line (optional) @return (SVGGraphAxis) this axis object or (object) line formatting values (if no parameters) */ line: function(colour, width, settings) { if (arguments.length == 0) { return this._lineFormat; } if (typeof width == 'object') { settings = width; width = null; } $.extend(this._lineFormat, {stroke: colour}, (width ? {strokeWidth: width} : {}), settings || {}); this._graph._drawGraph(); return this; }, /* Return to the parent graph. */ end: function() { return this._graph; } }); /* Details about the graph legend. @param graph (SVGGraph) the owning graph @param bgSettings (object) additional formatting settings for the legend background (optional) @param textSettings (object) additional formatting settings for the legend text (optional) @return (SVGGraphLegend) the new legend object */ function SVGGraphLegend(graph, bgSettings, textSettings) { this._graph = graph; // The owning graph this._show = true; // Show the legend? this._area = [0.9, 0.1, 1.0, 0.9]; // The legend area: left, top, right, bottom, // > 1 in pixels, <= 1 as proportion this._sampleSize = 15; // Size of sample box this._bgSettings = bgSettings || {stroke: 'gray'}; // Additional formatting settings for the legend background this._textSettings = textSettings || {}; // Additional formatting settings for the text } $.extend(SVGGraphLegend.prototype, { /* Set or retrieve whether the legend should be shown. @param show (boolean) true to display it, false to hide it @return (SVGGraphLegend) this legend object or (boolean) show the legend? (if no parameters) */ show: function(show) { if (arguments.length == 0) { return this._show; } this._show = show; this._graph._drawGraph(); return this; }, /* Set or retrieve the legend area. @param left (number) > 1 is pixels, <= 1 is proportion of width or (number[4]) for left, top, right, bottom @param top (number) > 1 is pixels, <= 1 is proportion of height @param right (number) > 1 is pixels, <= 1 is proportion of width @param bottom (number) > 1 is pixels, <= 1 is proportion of height @return (SVGGraphLegend) this legend object or (number[4]) the legend area: left, top, right, bottom (if no parameters) */ area: function(left, top, right, bottom) { if (arguments.length == 0) { return this._area; } this._area = (isArray(left) ? left : [left, top, right, bottom]); this._graph._drawGraph(); return this; }, /* Set or retrieve additional settings for the legend area. @param sampleSize (number) the size of the sample box to display (optional) @param bgSettings (object) additional formatting settings for the legend background @param textSettings (object) additional formatting settings for the legend text (optional) @return (SVGGraphLegend) this legend object or (object) bgSettings and textSettings for the legend (if no parameters) */ settings: function(sampleSize, bgSettings, textSettings) { if (arguments.length == 0) { return {sampleSize: this._sampleSize, bgSettings: this._bgSettings, textSettings: this._textSettings}; } if (typeof sampleSize != 'number') { textSettings = bgSettings; bgSettings = sampleSize; sampleSize = null; } this._sampleSize = sampleSize || this._sampleSize; this._bgSettings = bgSettings; this._textSettings = textSettings || this._textSettings; this._graph._drawGraph(); return this; }, /* Return to the parent graph. */ end: function() { return this._graph; } }); //============================================================================== /* Round a number to a given number of decimal points. */ function roundNumber(num, dec) { return Math.round(num * Math.pow(10, dec)) / Math.pow(10, dec); } var barOptions = ['barWidth (number) - the width of each bar', 'barGap (number) - the gap between sets of bars']; //------------------------------------------------------------------------------ /* Draw a standard grouped column bar chart. */ function SVGColumnChart() { } $.extend(SVGColumnChart.prototype, { /* Retrieve the display title for this chart type. @return the title */ title: function() { return 'Basic column chart'; }, /* Retrieve a description of this chart type. @return its description */ description: function() { return 'Compare sets of values as vertical bars with grouped categories.'; }, /* Retrieve a list of the options that may be set for this chart type. @return options list */ options: function() { return barOptions; }, /* Actually draw the graph in this type's style. @param graph (object) the SVGGraph object */ drawGraph: function(graph) { graph._drawChartBackground(true); var barWidth = graph._chartOptions.barWidth || 10; var barGap = graph._chartOptions.barGap || 10; var numSer = graph._series.length; var numVal = (numSer ? (graph._series[0])._values.length : 0); var dims = graph._getDims(); var xScale = dims[graph.W] / ((numSer * barWidth + barGap) * numVal + barGap); var yScale = dims[graph.H] / (graph.yAxis._scale.max - graph.yAxis._scale.min); this._chart = graph._wrapper.group(graph._chartCont, {class_: 'chart'}); for (var i = 0; i < numSer; i++) { this._drawSeries(graph, i, numSer, barWidth, barGap, dims, xScale, yScale); } graph._drawTitle(); graph._drawAxes(true); this._drawXAxis(graph, numSer, numVal, barWidth, barGap, dims, xScale); graph._drawLegend(); }, /* Plot an individual series. */ _drawSeries: function(graph, cur, numSer, barWidth, barGap, dims, xScale, yScale) { var series = graph._series[cur]; var g = graph._wrapper.group(this._chart, $.extend({class_: 'series' + cur, fill: series._fill, stroke: series._stroke, strokeWidth: series._strokeWidth}, series._settings || {})); for (var i = 0; i < series._values.length; i++) { var r = graph._wrapper.rect(g, dims[graph.X] + xScale * (barGap + i * (numSer * barWidth + barGap) + (cur * barWidth)), dims[graph.Y] + yScale * (graph.yAxis._scale.max - series._values[i]), xScale * barWidth, yScale * series._values[i]); graph._showStatus(r, series._name, series._values[i]); } }, /* Draw the x-axis and its ticks. */ _drawXAxis: function(graph, numSer, numVal, barWidth, barGap, dims, xScale) { var axis = graph.xAxis; if (axis._title) { graph._wrapper.text(graph._chartCont, dims[graph.X] + dims[graph.W] / 2, dims[graph.Y] + dims[graph.H] + axis._titleOffset, axis._title, $.extend({textAnchor: 'middle'}, axis._titleFormat || {})); } var gl = graph._wrapper.group(graph._chartCont, $.extend({class_: 'xAxis'}, axis._lineFormat)); var gt = graph._wrapper.group(graph._chartCont, $.extend({class_: 'xAxisLabels', textAnchor: 'middle'}, axis._labelFormat)); graph._wrapper.line(gl, dims[graph.X], dims[graph.Y] + dims[graph.H], dims[graph.X] + dims[graph.W], dims[graph.Y] + dims[graph.H]); if (axis._ticks.major) { var offsets = graph._getTickOffsets(axis, true); for (var i = 1; i < numVal; i++) { var x = dims[graph.X] + xScale * (barGap / 2 + i * (numSer * barWidth + barGap)); graph._wrapper.line(gl, x, dims[graph.Y] + dims[graph.H] + offsets[0] * axis._ticks.size, x, dims[graph.Y] + dims[graph.H] + offsets[1] * axis._ticks.size); } for (var i = 0; i < numVal; i++) { var x = dims[graph.X] + xScale * (barGap / 2 + (i + 0.5) * (numSer * barWidth + barGap)); graph._wrapper.text(gt, x, dims[graph.Y] + dims[graph.H] + 2 * axis._ticks.size, (axis._labels ? axis._labels[i] : '' + i)); } } } }); //------------------------------------------------------------------------------ /* Draw a stacked column bar chart. */ function SVGStackedColumnChart() { } $.extend(SVGStackedColumnChart.prototype, { /* Retrieve the display title for this chart type. @return the title */ title: function() { return 'Stacked column chart'; }, /* Retrieve a description of this chart type. @return its description */ description: function() { return 'Compare sets of values as vertical bars showing ' + 'relative contributions to the whole for each category.'; }, /* Retrieve a list of the options that may be set for this chart type. @return options list */ options: function() { return barOptions; }, /* Actually draw the graph in this type's style. @param graph (object) the SVGGraph object */ drawGraph: function(graph) { var bg = graph._drawChartBackground(true, true); var dims = graph._getDims(); if (graph._gridlines[0] && graph.xAxis._ticks.major) { graph._drawGridlines(bg, graph._getPercentageAxis(), true, dims, graph._gridlines[0]); } var barWidth = graph._chartOptions.barWidth || 10; var barGap = graph._chartOptions.barGap || 10; var numSer = graph._series.length; var numVal = (numSer ? (graph._series[0])._values.length : 0); var xScale = dims[graph.W] / ((barWidth + barGap) * numVal + barGap); var yScale = dims[graph.H]; this._chart = graph._wrapper.group(graph._chartCont, {class_: 'chart'}); this._drawColumns(graph, numSer, numVal, barWidth, barGap, dims, xScale, yScale); graph._drawTitle(); graph._wrapper.text(graph._chartCont, 0, 0, $.svg.graphing.region.percentageText, $.extend({textAnchor: 'middle', transform: 'translate(' + (dims[graph.X] - graph.yAxis._titleOffset) + ',' + (dims[graph.Y] + dims[graph.H] / 2) + ') rotate(-90)'}, graph.yAxis._titleFormat || {})); var pAxis = $.extend({}, graph._getPercentageAxis()); $.extend(pAxis._labelFormat, graph.yAxis._labelFormat || {}); graph._drawAxis(pAxis, 'yAxis', dims[graph.X], dims[graph.Y], dims[graph.X], dims[graph.Y] + dims[graph.H]); this._drawXAxis(graph, numVal, barWidth, barGap, dims, xScale); graph._drawLegend(); }, /* Plot all of the columns. */ _drawColumns: function(graph, numSer, numVal, barWidth, barGap, dims, xScale, yScale) { var totals = graph._getTotals(); var accum = []; for (var i = 0; i < numVal; i++) { accum[i] = 0; } for (var s = 0; s < numSer; s++) { var series = graph._series[s]; var g = graph._wrapper.group(this._chart, $.extend({class_: 'series' + s, fill: series._fill, stroke: series._stroke, strokeWidth: series._strokeWidth}, series._settings || {})); for (var i = 0; i < series._values.length; i++) { accum[i] += series._values[i]; var r = graph._wrapper.rect(g, dims[graph.X] + xScale * (barGap + i * (barWidth + barGap)), dims[graph.Y] + yScale * (totals[i] - accum[i]) / totals[i], xScale * barWidth, yScale * series._values[i] / totals[i]); graph._showStatus(r, series._name, roundNumber(series._values[i] / totals[i] * 100, 2)); } } }, /* Draw the x-axis and its ticks. */ _drawXAxis: function(graph, numVal, barWidth, barGap, dims, xScale) { var axis = graph.xAxis; if (axis._title) { graph._wrapper.text(graph._chartCont, dims[graph.X] + dims[graph.W] / 2, dims[graph.Y] + dims[graph.H] + axis._titleOffset, axis._title, $.extend({textAnchor: 'middle'}, axis._titleFormat || {})); } var gl = graph._wrapper.group(graph._chartCont, $.extend({class_: 'xAxis'}, axis._lineFormat)); var gt = graph._wrapper.group(graph._chartCont, $.extend({class_: 'xAxisLabels', textAnchor: 'middle'}, axis._labelFormat)); graph._wrapper.line(gl, dims[graph.X], dims[graph.Y] + dims[graph.H], dims[graph.X] + dims[graph.W], dims[graph.Y] + dims[graph.H]); if (axis._ticks.major) { var offsets = graph._getTickOffsets(axis, true); for (var i = 1; i < numVal; i++) { var x = dims[graph.X] + xScale * (barGap / 2 + i * (barWidth + barGap)); graph._wrapper.line(gl, x, dims[graph.Y] + dims[graph.H] + offsets[0] * axis._ticks.size, x, dims[graph.Y] + dims[graph.H] + offsets[1] * axis._ticks.size); } for (var i = 0; i < numVal; i++) { var x = dims[graph.X] + xScale * (barGap / 2 + (i + 0.5) * (barWidth + barGap)); graph._wrapper.text(gt, x, dims[graph.Y] + dims[graph.H] + 2 * axis._ticks.size, (axis._labels ? axis._labels[i] : '' + i)); } } } }); //------------------------------------------------------------------------------ /* Draw a standard grouped row bar chart. */ function SVGRowChart() { } $.extend(SVGRowChart.prototype, { /* Retrieve the display title for this chart type. @return the title */ title: function() { return 'Basic row chart'; }, /* Retrieve a description of this chart type. @return its description */ description: function() { return 'Compare sets of values as horizontal rows with grouped categories.'; }, /* Retrieve a list of the options that may be set for this chart type. @return options list */ options: function() { return barOptions; }, /* Actually draw the graph in this type's style. @param graph (object) the SVGGraph object */ drawGraph: function(graph) { var bg = graph._drawChartBackground(true, true); var dims = graph._getDims(); graph._drawGridlines(bg, graph.yAxis, false, dims, graph._gridlines[0]); var barWidth = graph._chartOptions.barWidth || 10; var barGap = graph._chartOptions.barGap || 10; var numSer = graph._series.length; var numVal = (numSer ? (graph._series[0])._values.length : 0); var xScale = dims[graph.W] / (graph.yAxis._scale.max - graph.yAxis._scale.min); var yScale = dims[graph.H] / ((numSer * barWidth + barGap) * numVal + barGap); this._chart = graph._wrapper.group(graph._chartCont, {class_: 'chart'}); for (var i = 0; i < numSer; i++) { this._drawSeries(graph, i, numSer, barWidth, barGap, dims, xScale, yScale); } graph._drawTitle(); this._drawAxes(graph, numSer, numVal, barWidth, barGap, dims, yScale); graph._drawLegend(); }, /* Plot an individual series. */ _drawSeries: function(graph, cur, numSer, barWidth, barGap, dims, xScale, yScale) { var series = graph._series[cur]; var g = graph._wrapper.group(this._chart, $.extend({class_: 'series' + cur, fill: series._fill, stroke: series._stroke, strokeWidth: series._strokeWidth}, series._settings || {})); for (var i = 0; i < series._values.length; i++) { var r = graph._wrapper.rect(g, dims[graph.X] + xScale * (0 - graph.yAxis._scale.min), dims[graph.Y] + yScale * (barGap + i * (numSer * barWidth + barGap) + (cur * barWidth)), xScale * series._values[i], yScale * barWidth); graph._showStatus(r, series._name, series._values[i]); } }, /* Draw the axes for this graph. */ _drawAxes: function(graph, numSer, numVal, barWidth, barGap, dims, yScale) { // X-axis var axis = graph.yAxis; if (axis) { if (axis._title) { graph._wrapper.text(graph._chartCont, dims[graph.X] + dims[graph.W] / 2, dims[graph.Y] + dims[graph.H] + axis._titleOffset, axis._title, axis._titleFormat); } graph._drawAxis(axis, 'xAxis', dims[graph.X], dims[graph.Y] + dims[graph.H], dims[graph.X] + dims[graph.W], dims[graph.Y] + dims[graph.H]); } // Y-axis var axis = graph.xAxis; if (axis._title) { graph._wrapper.text(graph._chartCont, 0, 0, axis._title, $.extend({textAnchor: 'middle', transform: 'translate(' + (dims[graph.X] - axis._titleOffset) + ',' + (dims[graph.Y] + dims[graph.H] / 2) + ') rotate(-90)'}, axis._titleFormat || {})); } var gl = graph._wrapper.group(graph._chartCont, $.extend({class_: 'yAxis'}, axis._lineFormat)); var gt = graph._wrapper.group(graph._chartCont, $.extend( {class_: 'yAxisLabels', textAnchor: 'end'}, axis._labelFormat)); graph._wrapper.line(gl, dims[graph.X], dims[graph.Y], dims[graph.X], dims[graph.Y] + dims[graph.H]); if (axis._ticks.major) { var offsets = graph._getTickOffsets(axis, false); for (var i = 1; i < numVal; i++) { var y = dims[graph.Y] + yScale * (barGap / 2 + i * (numSer * barWidth + barGap)); graph._wrapper.line(gl, dims[graph.X] + offsets[0] * axis._ticks.size, y, dims[graph.X] + offsets[1] * axis._ticks.size, y); } for (var i = 0; i < numVal; i++) { var y = dims[graph.Y] + yScale * (barGap / 2 + (i + 0.5) * (numSer * barWidth + barGap)); graph._wrapper.text(gt, dims[graph.X] - axis._ticks.size, y, (axis._labels ? axis._labels[i] : '' + i)); } } } }); //------------------------------------------------------------------------------ /* Draw a stacked row bar chart. */ function SVGStackedRowChart() { } $.extend(SVGStackedRowChart.prototype, { /* Retrieve the display title for this chart type. @return the title */ title: function() { return 'Stacked row chart'; }, /* Retrieve a description of this chart type. @return its description */ description: function() { return 'Compare sets of values as horizontal bars showing ' + 'relative contributions to the whole for each category.'; }, /* Retrieve a list of the options that may be set for this chart type. @return options list */ options: function() { return barOptions; }, /* Actually draw the graph in this type's style. @param graph (object) the SVGGraph object */ drawGraph: function(graph) { var bg = graph._drawChartBackground(true, true); var dims = graph._getDims(); if (graph._gridlines[0] && graph.xAxis._ticks.major) { graph._drawGridlines(bg, graph._getPercentageAxis(), false, dims, graph._gridlines[0]); } var barWidth = graph._chartOptions.barWidth || 10; var barGap = graph._chartOptions.barGap || 10; var numSer = graph._series.length; var numVal = (numSer ? (graph._series[0])._values.length : 0); var xScale = dims[graph.W]; var yScale = dims[graph.H] / ((barWidth + barGap) * numVal + barGap); this._chart = graph._wrapper.group(graph._chartCont, {class_: 'chart'}); this._drawRows(graph, numSer, numVal, barWidth, barGap, dims, xScale, yScale); graph._drawTitle(); graph._wrapper.text(graph._chartCont, dims[graph.X] + dims[graph.W] / 2, dims[graph.Y] + dims[graph.H] + graph.xAxis._titleOffset, $.svg.graphing.region.percentageText, $.extend({textAnchor: 'middle'}, graph.yAxis._titleFormat || {})); var pAxis = $.extend({}, graph._getPercentageAxis()); $.extend(pAxis._labelFormat, graph.yAxis._labelFormat || {}); graph._drawAxis(pAxis, 'xAxis', dims[graph.X], dims[graph.Y] + dims[graph.H], dims[graph.X] + dims[graph.W], dims[graph.Y] + dims[graph.H]); this._drawYAxis(graph, numVal, barWidth, barGap, dims, yScale); graph._drawLegend(); }, /* Plot all of the rows. */ _drawRows: function(graph, numSer, numVal, barWidth, barGap, dims, xScale, yScale) { var totals = graph._getTotals(); var accum = []; for (var i = 0; i < numVal; i++) { accum[i] = 0; } for (var s = 0; s < numSer; s++) { var series = graph._series[s]; var g = graph._wrapper.group(this._chart, $.extend({class_: 'series' + s, fill: series._fill, stroke: series._stroke, strokeWidth: series._strokeWidth}, series._settings || {})); for (var i = 0; i < series._values.length; i++) { var r = graph._wrapper.rect(g, dims[graph.X] + xScale * accum[i] / totals[i], dims[graph.Y] + yScale * (barGap + i * (barWidth + barGap)), xScale * series._values[i] / totals[i], yScale * barWidth); graph._showStatus(r, series._name, roundNumber(series._values[i] / totals[i] * 100, 2)); accum[i] += series._values[i]; } } }, /* Draw the y-axis and its ticks. */ _drawYAxis: function(graph, numVal, barWidth, barGap, dims, yScale) { var axis = graph.xAxis; if (axis._title) { graph._wrapper.text(graph._chartCont, 0, 0, axis._title, $.extend({textAnchor: 'middle', transform: 'translate(' + (dims[graph.X] - axis._titleOffset) + ',' + (dims[graph.Y] + dims[graph.H] / 2) + ') rotate(-90)'}, axis._titleFormat || {})); } var gl = graph._wrapper.group(graph._chartCont, $.extend({class_: 'yAxis'}, axis._lineFormat)); var gt = graph._wrapper.group(graph._chartCont, $.extend({class_: 'yAxisLabels', textAnchor: 'end'}, axis._labelFormat)); graph._wrapper.line(gl, dims[graph.X], dims[graph.Y], dims[graph.X], dims[graph.Y] + dims[graph.H]); if (axis._ticks.major) { var offsets = graph._getTickOffsets(axis, false); for (var i = 1; i < numVal; i++) { var y = dims[graph.Y] + yScale * (barGap / 2 + i * (barWidth + barGap)); graph._wrapper.line(gl, dims[graph.X] + offsets[0] * axis._ticks.size, y, dims[graph.X] + offsets[1] * axis._ticks.size, y); } for (var i = 0; i < numVal; i++) { var y = dims[graph.Y] + yScale * (barGap / 2 + (i + 0.5) * (barWidth + barGap)); graph._wrapper.text(gt, dims[graph.X] - axis._ticks.size, y, (axis._labels ? axis._labels[i] : '' + i)); } } } }); //------------------------------------------------------------------------------ /* Draw a standard line chart. */ function SVGLineChart() { } $.extend(SVGLineChart.prototype, { /* Retrieve the display title for this chart type. @return the title */ title: function() { return 'Basic line chart'; }, /* Retrieve a description of this chart type. @return its description */ description: function() { return 'Compare sets of values as continuous lines.'; }, /* Retrieve a list of the options that may be set for this chart type. @return options list */ options: function() { return []; }, /* Actually draw the graph in this type's style. @param graph (object) the SVGGraph object */ drawGraph: function(graph) { graph._drawChartBackground(); var dims = graph._getDims(); var xScale = dims[graph.W] / (graph.xAxis._scale.max - graph.xAxis._scale.min); var yScale = dims[graph.H] / (graph.yAxis._scale.max - graph.yAxis._scale.min); this._chart = graph._wrapper.group(graph._chartCont, {class_: 'chart'}); for (var i = 0; i < graph._series.length; i++) { this._drawSeries(graph, i, dims, xScale, yScale); } graph._drawTitle(); graph._drawAxes(); graph._drawLegend(); }, /* Plot an individual series. */ _drawSeries: function(graph, cur, dims, xScale, yScale) { var series = graph._series[cur]; var path = graph._wrapper.createPath(); for (var i = 0; i < series._values.length; i++) { var x = dims[graph.X] + i * xScale; var y = dims[graph.Y] + (graph.yAxis._scale.max - series._values[i]) * yScale; if (i == 0) { path.move(x, y); } else { path.line(x, y); } } var p = graph._wrapper.path(this._chart, path, $.extend({id: 'series' + cur, fill: 'none', stroke: series._stroke, strokeWidth: series._strokeWidth}, series._settings || {})); graph._showStatus(p, series._name, 0); } }); //------------------------------------------------------------------------------ /* Draw a standard pie chart. */ function SVGPieChart() { } $.extend(SVGPieChart.prototype, { _options: ['explode (number or number[]) - indexes of sections to explode out of the pie', 'explodeDist (number) - the distance to move an exploded section', 'pieGap (number) - the distance between pies for multiple values'], /* Retrieve the display title for this chart type. @return the title */ title: function() { return 'Pie chart'; }, /* Retrieve a description of this chart type. @return its description */ description: function() { return 'Compare relative sizes of values as contributions to the whole.'; }, /* Retrieve a list of the options that may be set for this chart type. @return options list */ options: function() { return this._options; }, /* Actually draw the graph in this type's style. @param graph (object) the SVGGraph object */ drawGraph: function(graph) { graph._drawChartBackground(true, true); this._chart = graph._wrapper.group(graph._chartCont, {class_: 'chart'}); var dims = graph._getDims(); this._drawSeries(graph, dims); graph._drawTitle(); graph._drawLegend(); }, /* Plot all the series. */ _drawSeries: function(graph, dims) { var totals = graph._getTotals(); var numSer = graph._series.length; var numVal = (numSer ? (graph._series[0])._values.length : 0); var path = graph._wrapper.createPath(); var explode = graph._chartOptions.explode || []; explode = (isArray(explode) ? explode : [explode]); var explodeDist = graph._chartOptions.explodeDist || 10; var pieGap = (numVal <= 1 ? 0 : graph._chartOptions.pieGap || 10); var xBase = (dims[graph.W] - (numVal * pieGap) - pieGap) / numVal / 2; var yBase = dims[graph.H] / 2; var radius = Math.min(xBase, yBase) - (explode.length > 0 ? explodeDist : 0); var gt = graph._wrapper.group(graph._chartCont, $.extend( {class_: 'xAxisLabels', textAnchor: 'middle'}, graph.xAxis._labelFormat)); var gl = []; for (var i = 0; i < numVal; i++) { var cx = dims[graph.X] + xBase + (i * (2 * Math.min(xBase, yBase) + pieGap)) + pieGap; var cy = dims[graph.Y] + yBase; var curTotal = 0; for (var j = 0; j < numSer; j++) { var series = graph._series[j]; if (i == 0) { gl[j] = graph._wrapper.group(this._chart, $.extend({class_: 'series' + j, fill: series._fill, stroke: series._stroke, strokeWidth: series._strokeWidth}, series._settings || {})); } if (series._values[i] == 0) { continue; } var start = (curTotal / totals[i]) * 2 * Math.PI; curTotal += series._values[i]; var end = (curTotal / totals[i]) * 2 * Math.PI; var exploding = false; for (var k = 0; k < explode.length; k++) { if (explode[k] == j) { exploding = true; break; } } var x = cx + (exploding ? explodeDist * Math.cos((start + end) / 2) : 0); var y = cy + (exploding ? explodeDist * Math.sin((start + end) / 2) : 0); var p = graph._wrapper.path(gl[j], path.reset().move(x, y). line(x + radius * Math.cos(start), y + radius * Math.sin(start)). arc(radius, radius, 0, (end - start < Math.PI ? 0 : 1), 1, x + radius * Math.cos(end), y + radius * Math.sin(end)).close()); graph._showStatus(p, series._name, roundNumber((end - start) / 2 / Math.PI * 100, 2)); } if (graph.xAxis) { graph._wrapper.text(gt, cx, dims[graph.Y] + dims[graph.H] + graph.xAxis._titleOffset, graph.xAxis._labels[i]) } } } }); //------------------------------------------------------------------------------ /* Determine whether an object is an array. */ function isArray(a) { return (a && a.constructor == Array); } // Basic chart types $.svg.graphing.addChartType('column', new SVGColumnChart()); $.svg.graphing.addChartType('stackedColumn', new SVGStackedColumnChart()); $.svg.graphing.addChartType('row', new SVGRowChart()); $.svg.graphing.addChartType('stackedRow', new SVGStackedRowChart()); $.svg.graphing.addChartType('line', new SVGLineChart()); $.svg.graphing.addChartType('pie', new SVGPieChart()); })(jQuery)