| /* Javascript plotting library for jQuery, v. 0.5. |
| * |
| * Released under the MIT license by IOLA, December 2007. |
| * |
| */ |
| |
| (function($) { |
| function Plot(target_, data_, options_) { |
| // data is on the form: |
| // [ series1, series2 ... ] |
| // where series is either just the data as [ [x1, y1], [x2, y2], ... ] |
| // or { data: [ [x1, y1], [x2, y2], ... ], label: "some label" } |
| |
| var series = [], |
| options = { |
| // the color theme used for graphs |
| colors: ["#edc240", "#afd8f8", "#cb4b4b", "#4da74d", "#9440ed"], |
| legend: { |
| show: true, |
| noColumns: 1, // number of colums in legend table |
| labelFormatter: null, // fn: string -> string |
| labelBoxBorderColor: "#ccc", // border color for the little label boxes |
| container: null, // container (as jQuery object) to put legend in, null means default on top of graph |
| position: "ne", // position of default legend container within plot |
| margin: 5, // distance from grid edge to default legend container within plot |
| backgroundColor: null, // null means auto-detect |
| backgroundOpacity: 0.85 // set to 0 to avoid background |
| }, |
| xaxis: { |
| mode: null, // null or "time" |
| min: null, // min. value to show, null means set automatically |
| max: null, // max. value to show, null means set automatically |
| autoscaleMargin: null, // margin in % to add if auto-setting min/max |
| ticks: null, // either [1, 3] or [[1, "a"], 3] or (fn: axis info -> ticks) or app. number of ticks for auto-ticks |
| tickFormatter: null, // fn: number -> string |
| labelWidth: null, // size of tick labels in pixels |
| labelHeight: null, |
| |
| // mode specific options |
| tickDecimals: null, // no. of decimals, null means auto |
| tickSize: null, // number or [number, "unit"] |
| minTickSize: null, // number or [number, "unit"] |
| monthNames: null, // list of names of months |
| timeformat: null // format string to use |
| }, |
| yaxis: { |
| mode: null, |
| autoscaleMargin: 0.02 |
| }, |
| x2axis: { |
| autoscaleMargin: null |
| }, |
| y2axis: { |
| mode: null, |
| autoscaleMargin: 0.02 |
| }, |
| points: { |
| show: false, |
| radius: 3, |
| lineWidth: 2, // in pixels |
| fill: true, |
| fillColor: "#ffffff" |
| }, |
| lines: { |
| show: false, |
| lineWidth: 2, // in pixels |
| fill: false, |
| fillColor: null |
| }, |
| bars: { |
| show: false, |
| lineWidth: 2, // in pixels |
| barWidth: 1, // in units of the x axis |
| fill: true, |
| fillColor: null, |
| align: "left" // or "center" |
| }, |
| grid: { |
| color: "#545454", // primary color used for outline and labels |
| backgroundColor: null, // null for transparent, else color |
| tickColor: "#dddddd", // color used for the ticks |
| labelMargin: 5, // in pixels |
| borderWidth: 2, |
| markings: null, // array of ranges or fn: axes -> array of ranges |
| markingsColor: "#f4f4f4", |
| markingsLineWidth: 2, |
| // interactive stuff |
| clickable: false, |
| hoverable: false, |
| autoHighlight: true, // highlight in case mouse is near |
| mouseActiveRadius: 10 // how far the mouse can be away to activate an item |
| }, |
| selection: { |
| mode: null, // one of null, "x", "y" or "xy" |
| color: "#e8cfac" |
| }, |
| shadowSize: 4 |
| }, |
| canvas = null, // the canvas for the plot itself |
| overlay = null, // canvas for interactive stuff on top of plot |
| eventHolder = null, // jQuery object that events should be bound to |
| ctx = null, octx = null, |
| target = target_, |
| axes = { xaxis: {}, yaxis: {}, x2axis: {}, y2axis: {} }, |
| plotOffset = { left: 0, right: 0, top: 0, bottom: 0}, |
| canvasWidth = 0, canvasHeight = 0, |
| plotWidth = 0, plotHeight = 0, |
| // dedicated to storing data for buggy standard compliance cases |
| workarounds = {}; |
| |
| this.setData = setData; |
| this.setupGrid = setupGrid; |
| this.draw = draw; |
| this.clearSelection = clearSelection; |
| this.setSelection = setSelection; |
| this.getCanvas = function() { return canvas; }; |
| this.getPlotOffset = function() { return plotOffset; }; |
| this.getData = function() { return series; }; |
| this.getAxes = function() { return axes; }; |
| this.highlight = highlight; |
| this.unhighlight = unhighlight; |
| this.processed = false; |
| |
| // initialize |
| parseOptions(options_); |
| setData(data_); |
| constructCanvas(); |
| setupGrid(); |
| draw(); |
| |
| |
| function setData(d) { |
| series = parseData(d); |
| |
| fillInSeriesOptions(); |
| processData(); |
| } |
| |
| function parseData(d) { |
| var res = []; |
| for (var i = 0; i < d.length; ++i) { |
| var s; |
| if (d[i].data) { |
| s = {}; |
| for (var v in d[i]) |
| s[v] = d[i][v]; |
| } |
| else { |
| s = { data: d[i] }; |
| } |
| res.push(s); |
| } |
| |
| return res; |
| } |
| |
| function parseOptions(o) { |
| $.extend(true, options, o); |
| |
| // backwards compatibility, to be removed in future |
| if (options.xaxis.noTicks && options.xaxis.ticks == null) |
| options.xaxis.ticks = options.xaxis.noTicks; |
| if (options.yaxis.noTicks && options.yaxis.ticks == null) |
| options.yaxis.ticks = options.yaxis.noTicks; |
| if (options.grid.coloredAreas) |
| options.grid.markings = options.grid.coloredAreas; |
| if (options.grid.coloredAreasColor) |
| options.grid.markingsColor = options.grid.coloredAreasColor; |
| } |
| |
| function fillInSeriesOptions() { |
| var i; |
| |
| // collect what we already got of colors |
| var neededColors = series.length, |
| usedColors = [], |
| assignedColors = []; |
| for (i = 0; i < series.length; ++i) { |
| var sc = series[i].color; |
| if (sc != null) { |
| --neededColors; |
| if (typeof sc == "number") |
| assignedColors.push(sc); |
| else |
| usedColors.push(parseColor(series[i].color)); |
| } |
| } |
| |
| // we might need to generate more colors if higher indices |
| // are assigned |
| for (i = 0; i < assignedColors.length; ++i) { |
| neededColors = Math.max(neededColors, assignedColors[i] + 1); |
| } |
| |
| // produce colors as needed |
| var colors = [], variation = 0; |
| i = 0; |
| while (colors.length < neededColors) { |
| var c; |
| if (options.colors.length == i) // check degenerate case |
| c = new Color(100, 100, 100); |
| else |
| c = parseColor(options.colors[i]); |
| |
| // vary color if needed |
| var sign = variation % 2 == 1 ? -1 : 1; |
| var factor = 1 + sign * Math.ceil(variation / 2) * 0.2; |
| c.scale(factor, factor, factor); |
| |
| // FIXME: if we're getting to close to something else, |
| // we should probably skip this one |
| colors.push(c); |
| |
| ++i; |
| if (i >= options.colors.length) { |
| i = 0; |
| ++variation; |
| } |
| } |
| |
| // fill in the options |
| var colori = 0, s; |
| for (i = 0; i < series.length; ++i) { |
| s = series[i]; |
| |
| // assign colors |
| if (s.color == null) { |
| s.color = colors[colori].toString(); |
| ++colori; |
| } |
| else if (typeof s.color == "number") |
| s.color = colors[s.color].toString(); |
| |
| // copy the rest |
| s.lines = $.extend(true, {}, options.lines, s.lines); |
| s.points = $.extend(true, {}, options.points, s.points); |
| s.bars = $.extend(true, {}, options.bars, s.bars); |
| if (s.shadowSize == null) |
| s.shadowSize = options.shadowSize; |
| if (s.xaxis && s.xaxis == 2) |
| s.xaxis = axes.x2axis; |
| else |
| s.xaxis = axes.xaxis; |
| if (s.yaxis && s.yaxis == 2) |
| s.yaxis = axes.y2axis; |
| else |
| s.yaxis = axes.yaxis; |
| } |
| } |
| |
| function processData() { |
| var topSentry = Number.POSITIVE_INFINITY, |
| bottomSentry = Number.NEGATIVE_INFINITY, |
| axis; |
| |
| for (axis in axes) { |
| axes[axis].datamin = topSentry; |
| axes[axis].datamax = bottomSentry; |
| axes[axis].used = false; |
| } |
| |
| for (var i = 0; i < series.length; ++i) { |
| var data = series[i].data, |
| axisx = series[i].xaxis, |
| axisy = series[i].yaxis, |
| mindelta = 0, maxdelta = 0; |
| |
| // make sure we got room for the bar |
| if (series[i].bars.show) { |
| mindelta = series[i].bars.align == "left" ? 0 : -series[i].bars.barWidth/2; |
| maxdelta = mindelta + series[i].bars.barWidth; |
| } |
| |
| axisx.used = axisy.used = true; |
| for (var j = 0; j < data.length; ++j) { |
| if (data[j] == null) |
| continue; |
| |
| if(!this.processed && options.yaxis.mode=='stack' && i>0) { |
| if(series[i-1].data[j]) { |
| data[j][1]=data[j][1]+series[i-1].data[j][1]; |
| } |
| } |
| |
| var x = data[j][0], y = data[j][1]; |
| |
| // convert to number |
| if (x != null && !isNaN(x = +x)) { |
| if (x + mindelta < axisx.datamin) |
| axisx.datamin = x + mindelta; |
| if (x + maxdelta > axisx.datamax) |
| axisx.datamax = x + maxdelta; |
| } |
| |
| if (y != null && !isNaN(y = +y)) { |
| if (y < axisy.datamin) |
| axisy.datamin = y; |
| if (y > axisy.datamax) |
| axisy.datamax = y; |
| } |
| |
| if (x == null || y == null || isNaN(x) || isNaN(y)) |
| data[j] = null; // mark this point as invalid |
| } |
| } |
| |
| for (axis in axes) { |
| if (axes[axis].datamin == topSentry) |
| axes[axis].datamin = 0; |
| if (axes[axis].datamax == bottomSentry) |
| axes[axis].datamax = 1; |
| } |
| this.processed = true; |
| } |
| |
| function constructCanvas() { |
| canvasWidth = target.width(); |
| canvasHeight = target.height(); |
| target.html(""); // clear target |
| target.css("position", "relative"); // for positioning labels and overlay |
| |
| if (canvasWidth <= 0 || canvasHeight <= 0) |
| throw "Invalid dimensions for plot, width = " + canvasWidth + ", height = " + canvasHeight; |
| |
| // the canvas |
| canvas = $('<canvas width="' + canvasWidth + '" height="' + canvasHeight + '"></canvas>').appendTo(target).get(0); |
| ctx = canvas.getContext("2d"); |
| |
| // overlay canvas for interactive features |
| overlay = $('<canvas style="position:absolute;left:0px;top:0px;" width="' + canvasWidth + '" height="' + canvasHeight + '"></canvas>').appendTo(target).get(0); |
| octx = overlay.getContext("2d"); |
| |
| // we include the canvas in the event holder too, because IE 7 |
| // sometimes has trouble with the stacking order |
| eventHolder = $([overlay, canvas]); |
| |
| // bind events |
| if (options.selection.mode != null || options.grid.hoverable) { |
| // FIXME: temp. work-around until jQuery bug 1871 is fixed |
| eventHolder.each(function () { |
| this.onmousemove = onMouseMove; |
| }); |
| |
| if (options.selection.mode != null) |
| eventHolder.mousedown(onMouseDown); |
| } |
| |
| if (options.grid.clickable) |
| eventHolder.click(onClick); |
| } |
| |
| function setupGrid() { |
| function setupAxis(axis, options) { |
| setRange(axis, options); |
| prepareTickGeneration(axis, options); |
| setTicks(axis, options); |
| // add transformation helpers |
| if (axis == axes.xaxis || axis == axes.x2axis) { |
| // data point to canvas coordinate |
| axis.p2c = function (p) { return (p - axis.min) * axis.scale; }; |
| // canvas coordinate to data point |
| axis.c2p = function (c) { return axis.min + c / axis.scale; }; |
| } |
| else { |
| axis.p2c = function (p) { return (axis.max - p) * axis.scale; }; |
| axis.c2p = function (p) { return axis.max - p / axis.scale; }; |
| } |
| } |
| |
| for (var axis in axes) |
| setupAxis(axes[axis], options[axis]); |
| |
| setSpacing(); |
| insertLabels(); |
| insertLegend(); |
| } |
| |
| function setRange(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(axis, axisOptions) { |
| // estimate number of ticks |
| var noTicks; |
| if (typeof axisOptions.ticks == "number" && axisOptions.ticks > 0) |
| noTicks = axisOptions.ticks; |
| else if (axis == axes.xaxis || axis == axes.x2axis) |
| noTicks = canvasWidth / 100; |
| else |
| noTicks = canvasHeight / 60; |
| |
| var delta = (axis.max - axis.min) / noTicks; |
| var size, generator, unit, formatter, i, magn, norm; |
| |
| if (axisOptions.mode == "time") { |
| // pretty handling of 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) { |
| if(Cookies.get("tz")=="UTC") { |
| switch (c) { |
| case 'h': c = "" + d.getUTCHours(); break; |
| case 'H': c = leftPad(d.getUTCHours()); break; |
| case 'M': c = leftPad(d.getUTCMinutes()); break; |
| case 'S': c = leftPad(d.getUTCSeconds()); break; |
| case 'd': c = "" + d.getUTCDate(); break; |
| case 'm': c = "" + (d.getUTCMonth() + 1); break; |
| case 'y': c = "" + d.getUTCFullYear(); break; |
| case 'b': c = "" + monthNames[d.getUTCMonth()]; break; |
| } |
| } else { |
| 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]; |
| } |
| |
| 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.setUTCSeconds(floorInBase(d.getUTCSeconds(), tickSize)); |
| if (unit == "minute") |
| d.setUTCMinutes(floorInBase(d.getUTCMinutes(), tickSize)); |
| if (unit == "hour") |
| d.setUTCHours(floorInBase(d.getUTCHours(), tickSize)); |
| if (unit == "month") |
| d.setUTCMonth(floorInBase(d.getUTCMonth(), tickSize)); |
| if (unit == "year") |
| d.setUTCFullYear(floorInBase(d.getUTCFullYear(), tickSize)); |
| |
| // reset smaller components |
| d.setUTCMilliseconds(0); |
| if (step >= timeUnitSize.minute) |
| d.setUTCSeconds(0); |
| if (step >= timeUnitSize.hour) |
| d.setUTCMinutes(0); |
| if (step >= timeUnitSize.day) |
| d.setUTCHours(0); |
| if (step >= timeUnitSize.day * 4) |
| d.setUTCDate(1); |
| if (step >= timeUnitSize.year) |
| d.setUTCMonth(0); |
| |
| |
| var carry = 0, v = Number.NaN, prev; |
| do { |
| prev = v; |
| v = d.getTime(); |
| ticks.push({ v: v, label: axis.tickFormatter(v, axis) }); |
| if (unit == "month") { |
| if (tickSize < 1) { |
| // a bit complicated - we'll divide the month |
| // up but we need to take care of fractions |
| // so we don't end up in the middle of a day |
| d.setUTCDate(1); |
| var start = d.getTime(); |
| d.setUTCMonth(d.getUTCMonth() + 1); |
| var end = d.getTime(); |
| d.setTime(v + carry * timeUnitSize.hour + (end - start) * tickSize); |
| carry = d.getUTCHours(); |
| d.setUTCHours(0); |
| } |
| else |
| d.setUTCMonth(d.getUTCMonth() + tickSize); |
| } |
| else if (unit == "year") { |
| d.setUTCFullYear(d.getUTCFullYear() + tickSize); |
| } |
| else |
| d.setTime(v + step); |
| } while (v < axis.max && v != prev); |
| |
| 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); |
| |
| generator = function (axis) { |
| var ticks = []; |
| |
| // spew out all possible ticks |
| var start = floorInBase(axis.min, axis.tickSize), |
| i = 0, v = Number.NaN, prev; |
| do { |
| prev = v; |
| v = start + i * axis.tickSize; |
| ticks.push({ v: v, label: axis.tickFormatter(v, axis) }); |
| ++i; |
| } while (v < axis.max && v != prev); |
| return ticks; |
| }; |
| |
| formatter = function (v, axis) { |
| return v.toFixed(axis.tickDecimals); |
| }; |
| } |
| |
| axis.tickSize = unit ? [size, unit] : size; |
| axis.tickGenerator = generator; |
| if ($.isFunction(axisOptions.tickFormatter)) |
| axis.tickFormatter = function (v, axis) { return "" + axisOptions.tickFormatter(v, axis); }; |
| else |
| axis.tickFormatter = formatter; |
| if (axisOptions.labelWidth != null) |
| axis.labelWidth = axisOptions.labelWidth; |
| if (axisOptions.labelHeight != null) |
| axis.labelHeight = axisOptions.labelHeight; |
| } |
| |
| function setTicks(axis, axisOptions) { |
| axis.ticks = []; |
| |
| if (!axis.used) |
| return; |
| |
| 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 ($.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; |
| for (i = 0; i < ticks.length; ++i) { |
| var label = null; |
| var t = ticks[i]; |
| if (typeof t == "object") { |
| v = t[0]; |
| if (t.length > 1) |
| label = t[1]; |
| } |
| else |
| v = t; |
| if (label == null) |
| label = axis.tickFormatter(v, axis); |
| axis.ticks[i] = { v: v, label: label }; |
| } |
| } |
| |
| if (axisOptions.autoscaleMargin != null && axis.ticks.length > 0) { |
| // snap to ticks |
| 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() { |
| function measureXLabels(axis) { |
| // to avoid measuring the widths of the labels, we |
| // construct fixed-size boxes and put the labels inside |
| // them, we don't need the exact figures and the |
| // fixed-size box content is easy to center |
| if (axis.labelWidth == null) |
| axis.labelWidth = canvasWidth / 6; |
| |
| // measure x label heights |
| if (axis.labelHeight == null) { |
| labels = []; |
| for (i = 0; i < axis.ticks.length; ++i) { |
| l = axis.ticks[i].label; |
| if (l) |
| labels.push('<div class="tickLabel" style="float:left;width:' + axis.labelWidth + 'px">' + l + '</div>'); |
| } |
| |
| axis.labelHeight = 0; |
| if (labels.length > 0) { |
| var dummyDiv = $('<div style="position:absolute;top:-10000px;width:10000px;font-size:smaller">' |
| + labels.join("") + '<div style="clear:left"></div></div>').appendTo(target); |
| axis.labelHeight = dummyDiv.height(); |
| dummyDiv.remove(); |
| } |
| } |
| } |
| |
| function measureYLabels(axis) { |
| if (axis.labelWidth == null || axis.labelHeight == null) { |
| var i, labels = [], l; |
| // calculate y label dimensions |
| for (i = 0; i < axis.ticks.length; ++i) { |
| l = axis.ticks[i].label; |
| if (l) |
| labels.push('<div class="tickLabel">' + l + '</div>'); |
| } |
| |
| if (labels.length > 0) { |
| var dummyDiv = $('<div style="position:absolute;top:-10000px;font-size:smaller">' |
| + labels.join("") + '</div>').appendTo(target); |
| if (axis.labelWidth == null) |
| axis.labelWidth = dummyDiv.width(); |
| if (axis.labelHeight == null) |
| axis.labelHeight = dummyDiv.find("div").height(); |
| dummyDiv.remove(); |
| } |
| |
| if (axis.labelWidth == null) |
| axis.labelWidth = 0; |
| if (axis.labelHeight == null) |
| axis.labelHeight = 0; |
| } |
| } |
| |
| measureXLabels(axes.xaxis); |
| measureYLabels(axes.yaxis); |
| measureXLabels(axes.x2axis); |
| measureYLabels(axes.y2axis); |
| |
| // get the most space needed around the grid for things |
| // that may stick out |
| var maxOutset = options.grid.borderWidth / 2; |
| for (i = 0; i < series.length; ++i) |
| maxOutset = Math.max(maxOutset, 2 * (series[i].points.radius + series[i].points.lineWidth/2)); |
| |
| plotOffset.left = plotOffset.right = plotOffset.top = plotOffset.bottom = maxOutset; |
| |
| if (axes.xaxis.labelHeight > 0) |
| plotOffset.bottom = Math.max(maxOutset, axes.xaxis.labelHeight + options.grid.labelMargin); |
| if (axes.yaxis.labelWidth > 0) |
| plotOffset.left = Math.max(maxOutset, axes.yaxis.labelWidth + options.grid.labelMargin); |
| |
| if (axes.x2axis.labelHeight > 0) |
| plotOffset.top = Math.max(maxOutset, axes.x2axis.labelHeight + options.grid.labelMargin); |
| |
| if (axes.y2axis.labelWidth > 0) |
| plotOffset.right = Math.max(maxOutset, axes.y2axis.labelWidth + options.grid.labelMargin); |
| |
| plotWidth = canvasWidth - plotOffset.left - plotOffset.right; |
| plotHeight = canvasHeight - plotOffset.bottom - plotOffset.top; |
| |
| // precompute how much the axis is scaling a point in canvas space |
| axes.xaxis.scale = plotWidth / (axes.xaxis.max - axes.xaxis.min); |
| axes.yaxis.scale = plotHeight / (axes.yaxis.max - axes.yaxis.min); |
| axes.x2axis.scale = plotWidth / (axes.x2axis.max - axes.x2axis.min); |
| axes.y2axis.scale = plotHeight / (axes.y2axis.max - axes.y2axis.min); |
| } |
| |
| function draw() { |
| drawGrid(); |
| for (var i = series.length-1; i >= 0; i--) { |
| drawSeries(series[i]); |
| } |
| } |
| |
| function extractRange(ranges, coord) { |
| var firstAxis = coord + "axis", |
| secondaryAxis = coord + "2axis", |
| axis, from, to, reverse; |
| |
| if (ranges[firstAxis]) { |
| axis = axes[firstAxis]; |
| from = ranges[firstAxis].from; |
| to = ranges[firstAxis].to; |
| } |
| else if (ranges[secondaryAxis]) { |
| axis = axes[secondaryAxis]; |
| from = ranges[secondaryAxis].from; |
| to = ranges[secondaryAxis].to; |
| } |
| else { |
| // backwards-compat stuff - to be removed in future |
| axis = axes[firstAxis]; |
| from = ranges[coord + "1"]; |
| to = ranges[coord + "2"]; |
| } |
| |
| // auto-reverse as an added bonus |
| if (from != null && to != null && from > to) |
| return { from: to, to: from, axis: axis }; |
| |
| return { from: from, to: to, axis: axis }; |
| } |
| |
| function drawGrid() { |
| var i; |
| |
| ctx.save(); |
| ctx.clearRect(0, 0, canvasWidth, canvasHeight); |
| ctx.translate(plotOffset.left, plotOffset.top); |
| |
| // draw background, if any |
| if (options.grid.backgroundColor) { |
| ctx.fillStyle = options.grid.backgroundColor; |
| ctx.fillRect(0, 0, plotWidth, plotHeight); |
| } |
| |
| // draw markings |
| if (options.grid.markings) { |
| var markings = options.grid.markings; |
| if ($.isFunction(markings)) |
| // xmin etc. are backwards-compatible, to be removed in future |
| markings = markings({ xmin: axes.xaxis.min, xmax: axes.xaxis.max, ymin: axes.yaxis.min, ymax: axes.yaxis.max, xaxis: axes.xaxis, yaxis: axes.yaxis, x2axis: axes.x2axis, y2axis: axes.y2axis }); |
| |
| for (i = 0; i < markings.length; ++i) { |
| var m = markings[i], |
| xrange = extractRange(m, "x"), |
| yrange = extractRange(m, "y"); |
| |
| // fill in missing |
| if (xrange.from == null) |
| xrange.from = xrange.axis.min; |
| if (xrange.to == null) |
| xrange.to = xrange.axis.max; |
| if (yrange.from == null) |
| yrange.from = yrange.axis.min; |
| if (yrange.to == null) |
| yrange.to = yrange.axis.max; |
| |
| // clip |
| if (xrange.to < xrange.axis.min || xrange.from > xrange.axis.max || |
| yrange.to < yrange.axis.min || yrange.from > yrange.axis.max) |
| continue; |
| |
| xrange.from = Math.max(xrange.from, xrange.axis.min); |
| xrange.to = Math.min(xrange.to, xrange.axis.max); |
| yrange.from = Math.max(yrange.from, yrange.axis.min); |
| yrange.to = Math.min(yrange.to, yrange.axis.max); |
| |
| if (xrange.from == xrange.to && yrange.from == yrange.to) |
| continue; |
| |
| // then draw |
| xrange.from = xrange.axis.p2c(xrange.from); |
| xrange.to = xrange.axis.p2c(xrange.to); |
| yrange.from = yrange.axis.p2c(yrange.from); |
| yrange.to = yrange.axis.p2c(yrange.to); |
| |
| if (xrange.from == xrange.to || yrange.from == yrange.to) { |
| // draw line |
| ctx.strokeStyle = m.color || options.grid.markingsColor; |
| ctx.lineWidth = m.lineWidth || options.grid.markingsLineWidth; |
| ctx.moveTo(Math.floor(xrange.from), Math.floor(yrange.from)); |
| ctx.lineTo(Math.floor(xrange.to), Math.floor(yrange.to)); |
| ctx.stroke(); |
| } |
| else { |
| // fill area |
| ctx.fillStyle = m.color || options.grid.markingsColor; |
| ctx.fillRect(Math.floor(xrange.from), |
| Math.floor(yrange.to), |
| Math.floor(xrange.to - xrange.from), |
| Math.floor(yrange.from - yrange.to)); |
| } |
| } |
| } |
| |
| // draw the inner grid |
| ctx.lineWidth = 1; |
| ctx.strokeStyle = options.grid.tickColor; |
| ctx.beginPath(); |
| var v, axis = axes.xaxis; |
| for (i = 0; i < axis.ticks.length; ++i) { |
| v = axis.ticks[i].v; |
| if (v <= axis.min || v >= axes.xaxis.max) |
| continue; // skip those lying on the axes |
| |
| ctx.moveTo(Math.floor(axis.p2c(v)) + ctx.lineWidth/2, 0); |
| ctx.lineTo(Math.floor(axis.p2c(v)) + ctx.lineWidth/2, plotHeight); |
| } |
| |
| axis = axes.yaxis; |
| for (i = 0; i < axis.ticks.length; ++i) { |
| v = axis.ticks[i].v; |
| if (v <= axis.min || v >= axis.max) |
| continue; |
| |
| ctx.moveTo(0, Math.floor(axis.p2c(v)) + ctx.lineWidth/2); |
| ctx.lineTo(plotWidth, Math.floor(axis.p2c(v)) + ctx.lineWidth/2); |
| } |
| |
| axis = axes.x2axis; |
| for (i = 0; i < axis.ticks.length; ++i) { |
| v = axis.ticks[i].v; |
| if (v <= axis.min || v >= axis.max) |
| continue; |
| |
| ctx.moveTo(Math.floor(axis.p2c(v)) + ctx.lineWidth/2, -5); |
| ctx.lineTo(Math.floor(axis.p2c(v)) + ctx.lineWidth/2, 5); |
| } |
| |
| axis = axes.y2axis; |
| for (i = 0; i < axis.ticks.length; ++i) { |
| v = axis.ticks[i].v; |
| if (v <= axis.min || v >= axis.max) |
| continue; |
| |
| ctx.moveTo(plotWidth-5, Math.floor(axis.p2c(v)) + ctx.lineWidth/2); |
| ctx.lineTo(plotWidth+5, Math.floor(axis.p2c(v)) + ctx.lineWidth/2); |
| } |
| |
| ctx.stroke(); |
| |
| if (options.grid.borderWidth) { |
| // draw border |
| ctx.lineWidth = options.grid.borderWidth; |
| ctx.strokeStyle = options.grid.color; |
| ctx.lineJoin = "round"; |
| ctx.strokeRect(0, 0, plotWidth, plotHeight); |
| } |
| |
| ctx.restore(); |
| } |
| |
| function insertLabels() { |
| target.find(".tickLabels").remove(); |
| |
| var html = '<div class="tickLabels" style="font-size:smaller;color:' + options.grid.color + '">'; |
| |
| function addLabels(axis, labelGenerator) { |
| for (var i = 0; i < axis.ticks.length; ++i) { |
| var tick = axis.ticks[i]; |
| if (!tick.label || tick.v < axis.min || tick.v > axis.max) |
| continue; |
| html += labelGenerator(tick, axis); |
| } |
| } |
| |
| addLabels(axes.xaxis, function (tick, axis) { |
| return '<div style="position:absolute;top:' + (plotOffset.top + plotHeight + options.grid.labelMargin) + 'px;left:' + (plotOffset.left + axis.p2c(tick.v) - axis.labelWidth/2) + 'px;width:' + axis.labelWidth + 'px;text-align:center" class="tickLabel">' + tick.label + "</div>"; |
| }); |
| |
| |
| addLabels(axes.yaxis, function (tick, axis) { |
| return '<div style="position:absolute;top:' + (plotOffset.top + axis.p2c(tick.v) - axis.labelHeight/2) + 'px;right:' + (plotOffset.right + plotWidth + options.grid.labelMargin) + 'px;width:' + axis.labelWidth + 'px;text-align:right" class="tickLabel">' + tick.label + "</div>"; |
| }); |
| |
| addLabels(axes.x2axis, function (tick, axis) { |
| return '<div style="position:absolute;bottom:' + (plotOffset.bottom + plotHeight + options.grid.labelMargin) + 'px;left:' + (plotOffset.left + axis.p2c(tick.v) - axis.labelWidth/2) + 'px;width:' + axis.labelWidth + 'px;text-align:center" class="tickLabel">' + tick.label + "</div>"; |
| }); |
| |
| addLabels(axes.y2axis, function (tick, axis) { |
| return '<div style="position:absolute;top:' + (plotOffset.top + axis.p2c(tick.v) - axis.labelHeight/2) + 'px;left:' + (plotOffset.left + plotWidth + options.grid.labelMargin) +'px;width:' + axis.labelWidth + 'px;text-align:left" class="tickLabel">' + tick.label + "</div>"; |
| }); |
| |
| html += '</div>'; |
| |
| target.append(html); |
| } |
| |
| function drawSeries(series) { |
| if (series.lines.show || (!series.bars.show && !series.points.show)) |
| drawSeriesLines(series); |
| if (series.bars.show) |
| drawSeriesBars(series); |
| if (series.points.show) |
| drawSeriesPoints(series); |
| } |
| |
| function drawSeriesLines(series) { |
| function plotLine(data, offset, axisx, axisy) { |
| var prev, cur = null, drawx = null, drawy = null; |
| |
| ctx.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 < axisy.min) { |
| if (y2 < axisy.min) |
| continue; // line segment is outside |
| // compute new intersection point |
| x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1; |
| y1 = axisy.min; |
| } |
| else if (y2 <= y1 && y2 < axisy.min) { |
| if (y1 < axisy.min) |
| continue; |
| x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1; |
| y2 = axisy.min; |
| } |
| |
| // clip with ymax |
| if (y1 >= y2 && y1 > axisy.max) { |
| if (y2 > axisy.max) |
| continue; |
| x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1; |
| y1 = axisy.max; |
| } |
| else if (y2 >= y1 && y2 > axisy.max) { |
| if (y1 > axisy.max) |
| continue; |
| x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1; |
| y2 = axisy.max; |
| } |
| |
| // clip with xmin |
| if (x1 <= x2 && x1 < axisx.min) { |
| if (x2 < axisx.min) |
| continue; |
| y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1; |
| x1 = axisx.min; |
| } |
| else if (x2 <= x1 && x2 < axisx.min) { |
| if (x1 < axisx.min) |
| continue; |
| y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1; |
| x2 = axisx.min; |
| } |
| |
| // clip with xmax |
| if (x1 >= x2 && x1 > axisx.max) { |
| if (x2 > axisx.max) |
| continue; |
| y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1; |
| x1 = axisx.max; |
| } |
| else if (x2 >= x1 && x2 > axisx.max) { |
| if (x1 > axisx.max) |
| continue; |
| y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1; |
| x2 = axisx.max; |
| } |
| |
| if (drawx != axisx.p2c(x1) || drawy != axisy.p2c(y1) + offset) |
| ctx.moveTo(axisx.p2c(x1), axisy.p2c(y1) + offset); |
| |
| drawx = axisx.p2c(x2); |
| drawy = axisy.p2c(y2) + offset; |
| ctx.lineTo(drawx, drawy); |
| } |
| ctx.stroke(); |
| } |
| |
| function plotLineArea(data, axisx, axisy) { |
| var prev, cur = null; |
| |
| var bottom = Math.min(Math.max(0, axisy.min), axisy.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 |
| ctx.lineTo(axisx.p2c(lastX), axisy.p2c(bottom)); |
| ctx.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 < axisx.min) { |
| if (x2 < axisx.min) |
| continue; |
| y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1; |
| x1 = axisx.min; |
| } |
| else if (x2 <= x1 && x2 < axisx.min) { |
| if (x1 < axisx.min) |
| continue; |
| y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1; |
| x2 = axisx.min; |
| } |
| |
| // clip with xmax |
| if (x1 >= x2 && x1 > axisx.max) { |
| if (x2 > axisx.max) |
| continue; |
| y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1; |
| x1 = axisx.max; |
| } |
| else if (x2 >= x1 && x2 > axisx.max) { |
| if (x1 > axisx.max) |
| continue; |
| y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1; |
| x2 = axisx.max; |
| } |
| |
| if (!areaOpen) { |
| // open area |
| ctx.beginPath(); |
| ctx.moveTo(axisx.p2c(x1), axisy.p2c(bottom)); |
| areaOpen = true; |
| } |
| |
| // now first check the case where both is outside |
| if (y1 >= axisy.max && y2 >= axisy.max) { |
| ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.max)); |
| ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.max)); |
| continue; |
| } |
| else if (y1 <= axisy.min && y2 <= axisy.min) { |
| ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.min)); |
| ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.min)); |
| continue; |
| } |
| |
| // else it's a bit more complicated, there might |
| // be two rectangles and two triangles we need to fill |
| // in; to find these keep track of the current x values |
| var x1old = x1, x2old = x2; |
| |
| // and clip the y values, without shortcutting |
| |
| // clip with ymin |
| if (y1 <= y2 && y1 < axisy.min && y2 >= axisy.min) { |
| x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1; |
| y1 = axisy.min; |
| } |
| else if (y2 <= y1 && y2 < axisy.min && y1 >= axisy.min) { |
| x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1; |
| y2 = axisy.min; |
| } |
| |
| // clip with ymax |
| if (y1 >= y2 && y1 > axisy.max && y2 <= axisy.max) { |
| x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1; |
| y1 = axisy.max; |
| } |
| else if (y2 >= y1 && y2 > axisy.max && y1 <= axisy.max) { |
| x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1; |
| y2 = axisy.max; |
| } |
| |
| |
| // if the x value was changed we got a rectangle |
| // to fill |
| if (x1 != x1old) { |
| if (y1 <= axisy.min) |
| top = axisy.min; |
| else |
| top = axisy.max; |
| |
| ctx.lineTo(axisx.p2c(x1old), axisy.p2c(top)); |
| ctx.lineTo(axisx.p2c(x1), axisy.p2c(top)); |
| } |
| |
| // fill the triangles |
| ctx.lineTo(axisx.p2c(x1), axisy.p2c(y1)); |
| ctx.lineTo(axisx.p2c(x2), axisy.p2c(y2)); |
| |
| // fill the other rectangle if it's there |
| if (x2 != x2old) { |
| if (y2 <= axisy.min) |
| top = axisy.min; |
| else |
| top = axisy.max; |
| |
| ctx.lineTo(axisx.p2c(x2old), axisy.p2c(top)); |
| ctx.lineTo(axisx.p2c(x2), axisy.p2c(top)); |
| } |
| |
| lastX = Math.max(x2, x2old); |
| } |
| |
| if (areaOpen) { |
| ctx.lineTo(axisx.p2c(lastX), axisy.p2c(bottom)); |
| ctx.fill(); |
| } |
| } |
| |
| ctx.save(); |
| ctx.translate(plotOffset.left, plotOffset.top); |
| ctx.lineJoin = "round"; |
| |
| var lw = series.lines.lineWidth; |
| var sw = series.shadowSize; |
| // FIXME: consider another form of shadow when filling is turned on |
| if (sw > 0) { |
| // draw shadow in two steps |
| ctx.lineWidth = sw / 2; |
| ctx.strokeStyle = "rgba(0,0,0,0.1)"; |
| plotLine(series.data, lw/2 + sw/2 + ctx.lineWidth/2, series.xaxis, series.yaxis); |
| |
| ctx.lineWidth = sw / 2; |
| ctx.strokeStyle = "rgba(0,0,0,0.2)"; |
| plotLine(series.data, lw/2 + ctx.lineWidth/2, series.xaxis, series.yaxis); |
| } |
| |
| ctx.lineWidth = lw; |
| ctx.strokeStyle = series.color; |
| setFillStyle(series.lines, series.color); |
| if (series.lines.fill) |
| plotLineArea(series.data, series.xaxis, series.yaxis); |
| plotLine(series.data, 0, series.xaxis, series.yaxis); |
| ctx.restore(); |
| } |
| |
| function drawSeriesPoints(series) { |
| function plotPoints(data, radius, fill, axisx, axisy) { |
| for (var i = 0; i < data.length; ++i) { |
| if (data[i] == null) |
| continue; |
| |
| var x = data[i][0], y = data[i][1]; |
| if (x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max) |
| continue; |
| |
| ctx.beginPath(); |
| ctx.arc(axisx.p2c(x), axisy.p2c(y), radius, 0, 2 * Math.PI, true); |
| if (fill) |
| ctx.fill(); |
| ctx.stroke(); |
| } |
| } |
| |
| function plotPointShadows(data, offset, radius, axisx, axisy) { |
| for (var i = 0; i < data.length; ++i) { |
| if (data[i] == null) |
| continue; |
| |
| var x = data[i][0], y = data[i][1]; |
| if (x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max) |
| continue; |
| ctx.beginPath(); |
| ctx.arc(axisx.p2c(x), axisy.p2c(y) + offset, radius, 0, Math.PI, false); |
| ctx.stroke(); |
| } |
| } |
| |
| ctx.save(); |
| ctx.translate(plotOffset.left, plotOffset.top); |
| |
| var lw = series.lines.lineWidth; |
| var sw = series.shadowSize; |
| if (sw > 0) { |
| // draw shadow in two steps |
| ctx.lineWidth = sw / 2; |
| ctx.strokeStyle = "rgba(0,0,0,0.1)"; |
| plotPointShadows(series.data, sw/2 + ctx.lineWidth/2, |
| series.points.radius, series.xaxis, series.yaxis); |
| |
| ctx.lineWidth = sw / 2; |
| ctx.strokeStyle = "rgba(0,0,0,0.2)"; |
| plotPointShadows(series.data, ctx.lineWidth/2, |
| series.points.radius, series.xaxis, series.yaxis); |
| } |
| |
| ctx.lineWidth = series.points.lineWidth; |
| ctx.strokeStyle = series.color; |
| setFillStyle(series.points, series.color); |
| plotPoints(series.data, series.points.radius, series.points.fill, |
| series.xaxis, series.yaxis); |
| ctx.restore(); |
| } |
| |
| function drawBar(x, y, barLeft, barRight, offset, fill, axisx, axisy, c) { |
| var drawLeft = true, drawRight = true, |
| drawTop = true, drawBottom = false, |
| left = x + barLeft, right = x + barRight, |
| bottom = 0, top = y; |
| |
| // account for negative bars |
| if (top < bottom) { |
| top = 0; |
| bottom = y; |
| drawBottom = true; |
| drawTop = false; |
| } |
| |
| // clip |
| if (right < axisx.min || left > axisx.max || |
| top < axisy.min || bottom > axisy.max) |
| return; |
| |
| if (left < axisx.min) { |
| left = axisx.min; |
| drawLeft = false; |
| } |
| |
| if (right > axisx.max) { |
| right = axisx.max; |
| drawRight = false; |
| } |
| |
| if (bottom < axisy.min) { |
| bottom = axisy.min; |
| drawBottom = false; |
| } |
| |
| if (top > axisy.max) { |
| top = axisy.max; |
| drawTop = false; |
| } |
| |
| // fill the bar |
| if (fill) { |
| c.beginPath(); |
| c.moveTo(axisx.p2c(left), axisy.p2c(bottom) + offset); |
| c.lineTo(axisx.p2c(left), axisy.p2c(top) + offset); |
| c.lineTo(axisx.p2c(right), axisy.p2c(top) + offset); |
| c.lineTo(axisx.p2c(right), axisy.p2c(bottom) + offset); |
| c.fill(); |
| } |
| |
| // draw outline |
| if (drawLeft || drawRight || drawTop || drawBottom) { |
| c.beginPath(); |
| left = axisx.p2c(left); |
| bottom = axisy.p2c(bottom); |
| right = axisx.p2c(right); |
| top = axisy.p2c(top); |
| |
| c.moveTo(left, bottom + offset); |
| if (drawLeft) |
| c.lineTo(left, top + offset); |
| else |
| c.moveTo(left, top + offset); |
| if (drawTop) |
| c.lineTo(right, top + offset); |
| else |
| c.moveTo(right, top + offset); |
| if (drawRight) |
| c.lineTo(right, bottom + offset); |
| else |
| c.moveTo(right, bottom + offset); |
| if (drawBottom) |
| c.lineTo(left, bottom + offset); |
| else |
| c.moveTo(left, bottom + offset); |
| c.stroke(); |
| } |
| } |
| |
| function drawSeriesBars(series) { |
| function plotBars(data, barLeft, barRight, offset, fill, axisx, axisy) { |
| for (var i = 0; i < data.length; i++) { |
| if (data[i] == null) |
| continue; |
| drawBar(data[i][0], data[i][1], barLeft, barRight, offset, fill, axisx, axisy, ctx); |
| } |
| } |
| |
| ctx.save(); |
| ctx.translate(plotOffset.left, plotOffset.top); |
| ctx.lineJoin = "round"; |
| |
| // FIXME: figure out a way to add shadows |
| /* |
| var bw = series.bars.barWidth; |
| var lw = series.bars.lineWidth; |
| var sw = series.shadowSize; |
| if (sw > 0) { |
| // draw shadow in two steps |
| ctx.lineWidth = sw / 2; |
| ctx.strokeStyle = "rgba(0,0,0,0.1)"; |
| plotBars(series.data, bw, lw/2 + sw/2 + ctx.lineWidth/2, false); |
| |
| ctx.lineWidth = sw / 2; |
| ctx.strokeStyle = "rgba(0,0,0,0.2)"; |
| plotBars(series.data, bw, lw/2 + ctx.lineWidth/2, false); |
| }*/ |
| |
| ctx.lineWidth = series.bars.lineWidth; |
| ctx.strokeStyle = series.color; |
| setFillStyle(series.bars, series.color); |
| var barLeft = series.bars.align == "left" ? 0 : -series.bars.barWidth/2; |
| plotBars(series.data, barLeft, barLeft + series.bars.barWidth, 0, series.bars.fill, series.xaxis, series.yaxis); |
| ctx.restore(); |
| } |
| |
| function setFillStyle(obj, seriesColor) { |
| var fill = obj.fill; |
| if (!fill) |
| return; |
| |
| if (obj.fillColor) |
| ctx.fillStyle = obj.fillColor; |
| else { |
| var c = parseColor(seriesColor); |
| c.a = typeof fill == "number" ? fill : 0.4; |
| c.normalize(); |
| ctx.fillStyle = c.toString(); |
| } |
| } |
| |
| function insertLegend() { |
| target.find(".legend").remove(); |
| |
| if (!options.legend.show) |
| return; |
| |
| var fragments = []; |
| var rowStarted = false; |
| for (i = 0; i < series.length; ++i) { |
| if (!series[i].label) |
| continue; |
| |
| if (i % options.legend.noColumns == 0) { |
| if (rowStarted) |
| fragments.push('</tr>'); |
| fragments.push('<tr>'); |
| rowStarted = true; |
| } |
| |
| var label = series[i].label; |
| if (options.legend.labelFormatter != null) |
| label = options.legend.labelFormatter(label); |
| |
| fragments.push( |
| '<td class="legendColorBox"><div style="border:1px solid ' + options.legend.labelBoxBorderColor + ';padding:1px"><div style="width:14px;height:10px;background-color:' + series[i].color + ';overflow:hidden"></div></div></td>' + |
| '<td class="legendLabel">' + label + '</td>'); |
| } |
| if (rowStarted) |
| fragments.push('</tr>'); |
| |
| if (fragments.length == 0) |
| return; |
| |
| var table = '<table style="font-size:smaller;color:' + options.grid.color + '">' + fragments.join("") + '</table>'; |
| if (options.legend.container != null) |
| options.legend.container.html(table); |
| else { |
| var pos = ""; |
| var p = options.legend.position, m = options.legend.margin; |
| if (p.charAt(0) == "n") |
| pos += 'top:' + (m + plotOffset.top) + 'px;'; |
| else if (p.charAt(0) == "s") |
| pos += 'bottom:' + (m + plotOffset.bottom) + 'px;'; |
| if (p.charAt(1) == "e") |
| pos += 'right:' + (m + plotOffset.right) + 'px;'; |
| else if (p.charAt(1) == "w") |
| pos += 'left:' + (m + plotOffset.left) + 'px;'; |
| var legend = $('<div class="legend">' + table.replace('style="', 'style="position:absolute;' + pos +';') + '</div>').appendTo(target); |
| if (options.legend.backgroundOpacity != 0.0) { |
| // put in the transparent background |
| // separately to avoid blended labels and |
| // label boxes |
| var c = options.legend.backgroundColor; |
| if (c == null) { |
| var tmp; |
| if (options.grid.backgroundColor) |
| tmp = options.grid.backgroundColor; |
| else |
| tmp = extractColor(legend); |
| c = parseColor(tmp).adjust(null, null, null, 1).toString(); |
| } |
| var div = legend.children(); |
| $('<div style="position:absolute;width:' + div.width() + 'px;height:' + div.height() + 'px;' + pos +'background-color:' + c + ';"> </div>').prependTo(legend).css('opacity', options.legend.backgroundOpacity); |
| |
| } |
| } |
| } |
| |
| |
| // interactive features |
| |
| var lastMousePos = { pageX: null, pageY: null }, |
| selection = { |
| first: { x: -1, y: -1}, second: { x: -1, y: -1}, |
| show: false, active: false }, |
| highlights = [], |
| clickIsMouseUp = false, |
| redrawTimeout = null, |
| hoverTimeout = null; |
| |
| // Returns the data item the mouse is over, or null if none is found |
| function findNearbyItem(mouseX, mouseY) { |
| var maxDistance = options.grid.mouseActiveRadius, |
| lowestDistance = maxDistance * maxDistance + 1, |
| item = null, foundPoint = false; |
| |
| function result(i, j) { |
| var tmp = series[i].data[j][1]; |
| if(options.yaxis.mode=='stack' && i>0) { |
| tmp = series[i].data[j][1] - series[i-1].data[j][1]; |
| } |
| return { datapoint: series[i].data[j], |
| dataIndex: j, |
| stackValue: tmp, |
| series: series[i], |
| seriesIndex: i }; |
| } |
| |
| for (var i = 0; i < series.length; ++i) { |
| var data = series[i].data, |
| axisx = series[i].xaxis, |
| axisy = series[i].yaxis, |
| |
| // precompute some stuff to make the loop faster |
| mx = axisx.c2p(mouseX), |
| my = axisy.c2p(mouseY), |
| maxx = maxDistance / axisx.scale, |
| maxy = maxDistance / axisy.scale, |
| checkbar = series[i].bars.show, |
| checkpoint = !(series[i].bars.show && !(series[i].lines.show || series[i].points.show)), |
| barLeft = series[i].bars.align == "left" ? 0 : -series[i].bars.barWidth/2, |
| barRight = barLeft + series[i].bars.barWidth; |
| for (var j = 0; j < data.length; ++j) { |
| if (data[j] == null) |
| continue; |
| |
| var x = data[j][0], y = data[j][1]; |
| |
| if (checkbar) { |
| // For a bar graph, the cursor must be inside the bar |
| // and no other point can be nearby |
| if (!foundPoint && mx >= x + barLeft && |
| mx <= x + barRight && |
| my >= Math.min(0, y) && my <= Math.max(0, y)) |
| item = result(i, j); |
| } |
| |
| if (checkpoint) { |
| // For points and lines, the cursor must be within a |
| // certain distance to the data point |
| |
| // check bounding box first |
| if ((x - mx > maxx || x - mx < -maxx) || |
| (y - my > maxy || y - my < -maxy)) |
| continue; |
| |
| // We have to calculate distances in pixels, not in |
| // data units, because the scale of the axes may be different |
| var dx = Math.abs(axisx.p2c(x) - mouseX), |
| dy = Math.abs(axisy.p2c(y) - mouseY), |
| dist = dx * dx + dy * dy; |
| if (dist < lowestDistance) { |
| lowestDistance = dist; |
| foundPoint = true; |
| item = result(i, j); |
| } |
| } |
| } |
| } |
| |
| return item; |
| } |
| |
| function onMouseMove(ev) { |
| // FIXME: temp. work-around until jQuery bug 1871 is fixed |
| var e = ev || window.event; |
| if (e.pageX == null && e.clientX != null) { |
| var de = document.documentElement, b = document.body; |
| lastMousePos.pageX = e.clientX + (de && de.scrollLeft || b.scrollLeft || 0); |
| lastMousePos.pageY = e.clientY + (de && de.scrollTop || b.scrollTop || 0); |
| } |
| else { |
| lastMousePos.pageX = e.pageX; |
| lastMousePos.pageY = e.pageY; |
| } |
| |
| if (options.grid.hoverable && !hoverTimeout) |
| hoverTimeout = setTimeout(onHover, 100); |
| |
| if (selection.active) |
| updateSelection(lastMousePos); |
| } |
| |
| function onMouseDown(e) { |
| if (e.which != 1) // only accept left-click |
| return; |
| |
| // cancel out any text selections |
| document.body.focus(); |
| |
| // prevent text selection and drag in old-school browsers |
| if (document.onselectstart !== undefined && workarounds.onselectstart == null) { |
| workarounds.onselectstart = document.onselectstart; |
| document.onselectstart = function () { return false; }; |
| } |
| if (document.ondrag !== undefined && workarounds.ondrag == null) { |
| workarounds.ondrag = document.ondrag; |
| document.ondrag = function () { return false; }; |
| } |
| |
| setSelectionPos(selection.first, e); |
| |
| lastMousePos.pageX = null; |
| selection.active = true; |
| $(document).one("mouseup", onSelectionMouseUp); |
| } |
| |
| function onClick(e) { |
| if (clickIsMouseUp) { |
| clickIsMouseUp = false; |
| return; |
| } |
| |
| triggerClickHoverEvent("plotclick", e); |
| } |
| |
| function onHover() { |
| triggerClickHoverEvent("plothover", lastMousePos); |
| hoverTimeout = null; |
| } |
| |
| // trigger click or hover event (they send the same parameters |
| // so we share their code) |
| function triggerClickHoverEvent(eventname, event) { |
| var offset = eventHolder.offset(), |
| pos = { pageX: event.pageX, pageY: event.pageY }, |
| canvasX = event.pageX - offset.left - plotOffset.left, |
| canvasY = event.pageY - offset.top - plotOffset.top; |
| |
| if (axes.xaxis.used) |
| pos.x = axes.xaxis.c2p(canvasX); |
| if (axes.yaxis.used) |
| pos.y = axes.yaxis.c2p(canvasY); |
| if (axes.x2axis.used) |
| pos.x2 = axes.x2axis.c2p(canvasX); |
| if (axes.y2axis.used) |
| pos.y2 = axes.y2axis.c2p(canvasY); |
| |
| var item = findNearbyItem(canvasX, canvasY); |
| |
| if (item) { |
| // fill in mouse pos for any listeners out there |
| item.pageX = parseInt(item.series.xaxis.p2c(item.datapoint[0]) + offset.left + plotOffset.left); |
| item.pageY = parseInt(item.series.yaxis.p2c(item.datapoint[1]) + offset.top + plotOffset.top); |
| |
| |
| } |
| |
| if (options.grid.autoHighlight) { |
| for (var i = 0; i < highlights.length; ++i) { |
| var h = highlights[i]; |
| if (h.auto && |
| !(item && h.series == item.series && h.point == item.datapoint)) |
| unhighlight(h.series, h.point); |
| } |
| |
| if (item) |
| highlight(item.series, item.datapoint, true); |
| } |
| |
| target.trigger(eventname, [ pos, item ]); |
| } |
| |
| function triggerRedrawOverlay() { |
| if (!redrawTimeout) |
| redrawTimeout = setTimeout(redrawOverlay, 50); |
| } |
| |
| function redrawOverlay() { |
| redrawTimeout = null; |
| |
| // redraw highlights |
| octx.save(); |
| octx.clearRect(0, 0, canvasWidth, canvasHeight); |
| octx.translate(plotOffset.left, plotOffset.top); |
| |
| var i, hi; |
| for (i = 0; i < highlights.length; ++i) { |
| hi = highlights[i]; |
| |
| if (hi.series.bars.show) |
| drawBarHighlight(hi.series, hi.point); |
| else |
| drawPointHighlight(hi.series, hi.point); |
| } |
| octx.restore(); |
| |
| // redraw selection |
| if (selection.show && selectionIsSane()) { |
| octx.strokeStyle = parseColor(options.selection.color).scale(null, null, null, 0.8).toString(); |
| octx.lineWidth = 1; |
| ctx.lineJoin = "round"; |
| octx.fillStyle = parseColor(options.selection.color).scale(null, null, null, 0.4).toString(); |
| |
| var x = Math.min(selection.first.x, selection.second.x), |
| y = Math.min(selection.first.y, selection.second.y), |
| w = Math.abs(selection.second.x - selection.first.x), |
| h = Math.abs(selection.second.y - selection.first.y); |
| |
| octx.fillRect(x + plotOffset.left, y + plotOffset.top, w, h); |
| octx.strokeRect(x + plotOffset.left, y + plotOffset.top, w, h); |
| } |
| } |
| |
| function highlight(s, point, auto) { |
| if (typeof s == "number") |
| s = series[s]; |
| |
| if (typeof point == "number") |
| point = s.data[point]; |
| |
| var i = indexOfHighlight(s, point); |
| if (i == -1) { |
| highlights.push({ series: s, point: point, auto: auto }); |
| |
| triggerRedrawOverlay(); |
| } |
| else if (!auto) |
| highlights[i].auto = false; |
| } |
| |
| function unhighlight(s, point) { |
| if (typeof s == "number") |
| s = series[s]; |
| |
| if (typeof point == "number") |
| point = s.data[point]; |
| |
| var i = indexOfHighlight(s, point); |
| if (i != -1) { |
| highlights.splice(i, 1); |
| |
| triggerRedrawOverlay(); |
| } |
| } |
| |
| function indexOfHighlight(s, p) { |
| for (var i = 0; i < highlights.length; ++i) { |
| var h = highlights[i]; |
| if (h.series == s && h.point[0] == p[0] |
| && h.point[1] == p[1]) |
| return i; |
| } |
| return -1; |
| } |
| |
| function drawPointHighlight(series, point) { |
| var x = point[0], y = point[1], |
| axisx = series.xaxis, axisy = series.yaxis; |
| |
| if (x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max) |
| return; |
| |
| var pointRadius = series.points.radius + series.points.lineWidth / 2; |
| octx.lineWidth = pointRadius; |
| octx.strokeStyle = parseColor(series.color).scale(1, 1, 1, 0.5).toString(); |
| var radius = 1.5 * pointRadius; |
| octx.beginPath(); |
| octx.arc(axisx.p2c(x), axisy.p2c(y), radius, 0, 2 * Math.PI, true); |
| octx.stroke(); |
| } |
| |
| function drawBarHighlight(series, point) { |
| octx.lineJoin = "round"; |
| octx.lineWidth = series.bars.lineWidth; |
| octx.strokeStyle = parseColor(series.color).scale(1, 1, 1, 0.5).toString(); |
| octx.fillStyle = parseColor(series.color).scale(1, 1, 1, 0.5).toString(); |
| var barLeft = series.bars.align == "left" ? 0 : -series.bars.barWidth/2; |
| drawBar(point[0], point[1], barLeft, barLeft + series.bars.barWidth, |
| 0, true, series.xaxis, series.yaxis, octx); |
| } |
| |
| function triggerSelectedEvent() { |
| var x1 = Math.min(selection.first.x, selection.second.x), |
| x2 = Math.max(selection.first.x, selection.second.x), |
| y1 = Math.max(selection.first.y, selection.second.y), |
| y2 = Math.min(selection.first.y, selection.second.y); |
| |
| var r = {}; |
| if (axes.xaxis.used) |
| r.xaxis = { from: axes.xaxis.c2p(x1), to: axes.xaxis.c2p(x2) }; |
| if (axes.x2axis.used) |
| r.x2axis = { from: axes.x2axis.c2p(x1), to: axes.x2axis.c2p(x2) }; |
| if (axes.yaxis.used) |
| r.yaxis = { from: axes.yaxis.c2p(y1), to: axes.yaxis.c2p(y2) }; |
| if (axes.y2axis.used) |
| r.yaxis = { from: axes.y2axis.c2p(y1), to: axes.y2axis.c2p(y2) }; |
| |
| target.trigger("plotselected", [ r ]); |
| |
| // backwards-compat stuff, to be removed in future |
| if (axes.xaxis.used && axes.yaxis.used) |
| target.trigger("selected", [ { x1: r.xaxis.from, y1: r.yaxis.from, x2: r.xaxis.to, y2: r.yaxis.to } ]); |
| } |
| |
| function onSelectionMouseUp(e) { |
| // revert drag stuff for old-school browsers |
| if (document.onselectstart !== undefined) |
| document.onselectstart = workarounds.onselectstart; |
| if (document.ondrag !== undefined) |
| document.ondrag = workarounds.ondrag; |
| |
| // no more draggy-dee-drag |
| selection.active = false; |
| updateSelection(e); |
| |
| if (selectionIsSane()) { |
| triggerSelectedEvent(); |
| clickIsMouseUp = true; |
| } |
| |
| return false; |
| } |
| |
| function setSelectionPos(pos, e) { |
| var offset = eventHolder.offset(); |
| if (options.selection.mode == "y") { |
| if (pos == selection.first) |
| pos.x = 0; |
| else |
| pos.x = plotWidth; |
| } |
| else { |
| pos.x = e.pageX - offset.left - plotOffset.left; |
| pos.x = Math.min(Math.max(0, pos.x), plotWidth); |
| } |
| |
| if (options.selection.mode == "x") { |
| if (pos == selection.first) |
| pos.y = 0; |
| else |
| pos.y = plotHeight; |
| } |
| else { |
| pos.y = e.pageY - offset.top - plotOffset.top; |
| pos.y = Math.min(Math.max(0, pos.y), plotHeight); |
| } |
| } |
| |
| function updateSelection(pos) { |
| if (pos.pageX == null) |
| return; |
| |
| setSelectionPos(selection.second, pos); |
| if (selectionIsSane()) { |
| selection.show = true; |
| triggerRedrawOverlay(); |
| } |
| else |
| clearSelection(); |
| } |
| |
| function clearSelection() { |
| if (selection.show) { |
| selection.show = false; |
| triggerRedrawOverlay(); |
| } |
| } |
| |
| function setSelection(ranges, preventEvent) { |
| var range; |
| |
| if (options.selection.mode == "y") { |
| selection.first.x = 0; |
| selection.second.x = plotWidth; |
| } |
| else { |
| range = extractRange(ranges, "x"); |
| |
| selection.first.x = range.axis.p2c(range.from); |
| selection.second.x = range.axis.p2c(range.to); |
| } |
| |
| if (options.selection.mode == "x") { |
| selection.first.y = 0; |
| selection.second.y = plotHeight; |
| } |
| else { |
| range = extractRange(ranges, "y"); |
| |
| selection.first.y = range.axis.p2c(range.from); |
| selection.second.y = range.axis.p2c(range.to); |
| } |
| |
| selection.show = true; |
| triggerRedrawOverlay(); |
| if (!preventEvent) |
| triggerSelectedEvent(); |
| } |
| |
| function selectionIsSane() { |
| var minSize = 5; |
| return Math.abs(selection.second.x - selection.first.x) >= minSize && |
| Math.abs(selection.second.y - selection.first.y) >= minSize; |
| } |
| } |
| |
| $.plot = function(target, data, options) { |
| var plot = new Plot(target, data, options); |
| /*var t0 = new Date(); |
| var t1 = new Date(); |
| var tstr = "time used (msecs): " + (t1.getTime() - t0.getTime()) |
| if (window.console) |
| console.log(tstr); |
| else |
| alert(tstr);*/ |
| return plot; |
| }; |
| |
| // round to nearby lower multiple of base |
| function floorInBase(n, base) { |
| return base * Math.floor(n / base); |
| } |
| |
| function clamp(min, value, max) { |
| if (value < min) |
| return value; |
| else if (value > max) |
| return max; |
| else |
| return value; |
| } |
| |
| // color helpers, inspiration from the jquery color animation |
| // plugin by John Resig |
| function Color (r, g, b, a) { |
| |
| var rgba = ['r','g','b','a']; |
| var x = 4; //rgba.length |
| |
| while (-1<--x) { |
| this[rgba[x]] = arguments[x] || ((x==3) ? 1.0 : 0); |
| } |
| |
| this.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(",")+")"; |
| } |
| }; |
| |
| this.scale = function(rf, gf, bf, af) { |
| x = 4; //rgba.length |
| while (-1<--x) { |
| if (arguments[x] != null) |
| this[rgba[x]] *= arguments[x]; |
| } |
| return this.normalize(); |
| }; |
| |
| this.adjust = function(rd, gd, bd, ad) { |
| x = 4; //rgba.length |
| while (-1<--x) { |
| if (arguments[x] != null) |
| this[rgba[x]] += arguments[x]; |
| } |
| return this.normalize(); |
| }; |
| |
| this.clone = function() { |
| return new Color(this.r, this.b, this.g, this.a); |
| }; |
| |
| var limit = function(val,minVal,maxVal) { |
| return Math.max(Math.min(val, maxVal), minVal); |
| }; |
| |
| this.normalize = function() { |
| this.r = limit(parseInt(this.r), 0, 255); |
| this.g = limit(parseInt(this.g), 0, 255); |
| this.b = limit(parseInt(this.b), 0, 255); |
| this.a = limit(this.a, 0, 1); |
| return this; |
| }; |
| |
| this.normalize(); |
| } |
| |
| var lookupColors = { |
| aqua:[0,255,255], |
| azure:[240,255,255], |
| beige:[245,245,220], |
| black:[0,0,0], |
| blue:[0,0,255], |
| brown:[165,42,42], |
| cyan:[0,255,255], |
| darkblue:[0,0,139], |
| darkcyan:[0,139,139], |
| darkgrey:[169,169,169], |
| darkgreen:[0,100,0], |
| darkkhaki:[189,183,107], |
| darkmagenta:[139,0,139], |
| darkolivegreen:[85,107,47], |
| darkorange:[255,140,0], |
| darkorchid:[153,50,204], |
| darkred:[139,0,0], |
| darksalmon:[233,150,122], |
| darkviolet:[148,0,211], |
| fuchsia:[255,0,255], |
| gold:[255,215,0], |
| green:[0,128,0], |
| indigo:[75,0,130], |
| khaki:[240,230,140], |
| lightblue:[173,216,230], |
| lightcyan:[224,255,255], |
| lightgreen:[144,238,144], |
| lightgrey:[211,211,211], |
| lightpink:[255,182,193], |
| lightyellow:[255,255,224], |
| lime:[0,255,0], |
| magenta:[255,0,255], |
| maroon:[128,0,0], |
| navy:[0,0,128], |
| olive:[128,128,0], |
| orange:[255,165,0], |
| pink:[255,192,203], |
| purple:[128,0,128], |
| violet:[128,0,128], |
| red:[255,0,0], |
| silver:[192,192,192], |
| white:[255,255,255], |
| yellow:[255,255,0] |
| }; |
| |
| function extractColor(element) { |
| var color, elem = element; |
| do { |
| color = elem.css("background-color").toLowerCase(); |
| // keep going until we find an element that has color, or |
| // we hit the body |
| if (color != '' && color != 'transparent') |
| break; |
| elem = elem.parent(); |
| } while (!$.nodeName(elem.get(0), "body")); |
| |
| // catch Safari's way of signalling transparent |
| if (color == "rgba(0, 0, 0, 0)") |
| return "transparent"; |
| |
| return color; |
| } |
| |
| // parse string, returns Color |
| function parseColor(str) { |
| var result; |
| |
| // Look for 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 Color(parseInt(result[1], 10), parseInt(result[2], 10), parseInt(result[3], 10)); |
| |
| // Look for 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 Color(parseInt(result[1], 10), parseInt(result[2], 10), parseInt(result[3], 10), parseFloat(result[4])); |
| |
| // Look for 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 Color(parseFloat(result[1])*2.55, parseFloat(result[2])*2.55, parseFloat(result[3])*2.55); |
| |
| // Look for 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 Color(parseFloat(result[1])*2.55, parseFloat(result[2])*2.55, parseFloat(result[3])*2.55, parseFloat(result[4])); |
| |
| // Look for #a0b1c2 |
| if (result = /#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(str)) |
| return new Color(parseInt(result[1], 16), parseInt(result[2], 16), parseInt(result[3], 16)); |
| |
| // Look for #fff |
| if (result = /#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(str)) |
| return new Color(parseInt(result[1]+result[1], 16), parseInt(result[2]+result[2], 16), parseInt(result[3]+result[3], 16)); |
| |
| // Otherwise, we're most likely dealing with a named color |
| var name = $.trim(str).toLowerCase(); |
| if (name == "transparent") |
| return new Color(255, 255, 255, 0); |
| else { |
| result = lookupColors[name]; |
| return new Color(result[0], result[1], result[2]); |
| } |
| } |
| |
| })(jQuery); |
