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Diffstat (limited to 'datastore-leveldb/public/lib/flot-0.7/jquery.flot.js')
| -rw-r--r-- | datastore-leveldb/public/lib/flot-0.7/jquery.flot.js | 2599 |
1 files changed, 0 insertions, 2599 deletions
diff --git a/datastore-leveldb/public/lib/flot-0.7/jquery.flot.js b/datastore-leveldb/public/lib/flot-0.7/jquery.flot.js deleted file mode 100644 index aabc544..0000000 --- a/datastore-leveldb/public/lib/flot-0.7/jquery.flot.js +++ /dev/null @@ -1,2599 +0,0 @@ -/*! Javascript plotting library for jQuery, v. 0.7. - * - * Released under the MIT license by IOLA, December 2007. - * - */ - -// first an inline dependency, jquery.colorhelpers.js, we inline it here -// for convenience - -/* Plugin for jQuery for working with colors. - * - * Version 1.1. - * - * Inspiration from jQuery color animation plugin by John Resig. - * - * Released under the MIT license by Ole Laursen, October 2009. - * - * Examples: - * - * $.color.parse("#fff").scale('rgb', 0.25).add('a', -0.5).toString() - * var c = $.color.extract($("#mydiv"), 'background-color'); - * console.log(c.r, c.g, c.b, c.a); - * $.color.make(100, 50, 25, 0.4).toString() // returns "rgba(100,50,25,0.4)" - * - * Note that .scale() and .add() return the same modified object - * instead of making a new one. - * - * V. 1.1: Fix error handling so e.g. parsing an empty string does - * produce a color rather than just crashing. - */ -(function(B){B.color={};B.color.make=function(F,E,C,D){var G={};G.r=F||0;G.g=E||0;G.b=C||0;G.a=D!=null?D:1;G.add=function(J,I){for(var H=0;H<J.length;++H){G[J.charAt(H)]+=I}return G.normalize()};G.scale=function(J,I){for(var H=0;H<J.length;++H){G[J.charAt(H)]*=I}return G.normalize()};G.toString=function(){if(G.a>=1){return"rgb("+[G.r,G.g,G.b].join(",")+")"}else{return"rgba("+[G.r,G.g,G.b,G.a].join(",")+")"}};G.normalize=function(){function H(J,K,I){return K<J?J:(K>I?I:K)}G.r=H(0,parseInt(G.r),255);G.g=H(0,parseInt(G.g),255);G.b=H(0,parseInt(G.b),255);G.a=H(0,G.a,1);return G};G.clone=function(){return B.color.make(G.r,G.b,G.g,G.a)};return G.normalize()};B.color.extract=function(D,C){var E;do{E=D.css(C).toLowerCase();if(E!=""&&E!="transparent"){break}D=D.parent()}while(!B.nodeName(D.get(0),"body"));if(E=="rgba(0, 0, 0, 0)"){E="transparent"}return B.color.parse(E)};B.color.parse=function(F){var E,C=B.color.make;if(E=/rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(F)){return C(parseInt(E[1],10),parseInt(E[2],10),parseInt(E[3],10))}if(E=/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(F)){return C(parseInt(E[1],10),parseInt(E[2],10),parseInt(E[3],10),parseFloat(E[4]))}if(E=/rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(F)){return C(parseFloat(E[1])*2.55,parseFloat(E[2])*2.55,parseFloat(E[3])*2.55)}if(E=/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(F)){return C(parseFloat(E[1])*2.55,parseFloat(E[2])*2.55,parseFloat(E[3])*2.55,parseFloat(E[4]))}if(E=/#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(F)){return C(parseInt(E[1],16),parseInt(E[2],16),parseInt(E[3],16))}if(E=/#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(F)){return C(parseInt(E[1]+E[1],16),parseInt(E[2]+E[2],16),parseInt(E[3]+E[3],16))}var D=B.trim(F).toLowerCase();if(D=="transparent"){return C(255,255,255,0)}else{E=A[D]||[0,0,0];return C(E[0],E[1],E[2])}};var A={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]}})(jQuery); - -// the actual Flot code -(function($) { - function Plot(placeholder, data_, options_, plugins) { - // 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: { - show: null, // null = auto-detect, true = always, false = never - position: "bottom", // or "top" - mode: null, // null or "time" - color: null, // base color, labels, ticks - tickColor: null, // possibly different color of ticks, e.g. "rgba(0,0,0,0.15)" - transform: null, // null or f: number -> number to transform axis - inverseTransform: null, // if transform is set, this should be the inverse function - 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, - reserveSpace: null, // whether to reserve space even if axis isn't shown - tickLength: null, // size in pixels of ticks, or "full" for whole line - alignTicksWithAxis: null, // axis number or null for no sync - - // 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 - twelveHourClock: false // 12 or 24 time in time mode - }, - yaxis: { - autoscaleMargin: 0.02, - position: "left" // or "right" - }, - xaxes: [], - yaxes: [], - series: { - points: { - show: false, - radius: 3, - lineWidth: 2, // in pixels - fill: true, - fillColor: "#ffffff", - symbol: "circle" // or callback - }, - lines: { - // we don't put in show: false so we can see - // whether lines were actively disabled - lineWidth: 2, // in pixels - fill: false, - fillColor: null, - steps: false - }, - bars: { - show: false, - lineWidth: 2, // in pixels - barWidth: 1, // in units of the x axis - fill: true, - fillColor: null, - align: "left", // or "center" - horizontal: false - }, - shadowSize: 3 - }, - grid: { - show: true, - aboveData: false, - color: "#545454", // primary color used for outline and labels - backgroundColor: null, // null for transparent, else color - borderColor: null, // set if different from the grid color - tickColor: null, // color for the ticks, e.g. "rgba(0,0,0,0.15)" - labelMargin: 5, // in pixels - axisMargin: 8, // in pixels - borderWidth: 2, // in pixels - minBorderMargin: null, // in pixels, null means taken from points radius - 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 - }, - hooks: {} - }, - 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, - xaxes = [], yaxes = [], - plotOffset = { left: 0, right: 0, top: 0, bottom: 0}, - canvasWidth = 0, canvasHeight = 0, - plotWidth = 0, plotHeight = 0, - hooks = { - processOptions: [], - processRawData: [], - processDatapoints: [], - drawSeries: [], - draw: [], - bindEvents: [], - drawOverlay: [], - shutdown: [] - }, - plot = this; - - // public functions - plot.setData = setData; - plot.setupGrid = setupGrid; - plot.draw = draw; - plot.getPlaceholder = function() { return placeholder; }; - plot.getCanvas = function() { return canvas; }; - plot.getPlotOffset = function() { return plotOffset; }; - plot.width = function () { return plotWidth; }; - plot.height = function () { return plotHeight; }; - plot.offset = function () { - var o = eventHolder.offset(); - o.left += plotOffset.left; - o.top += plotOffset.top; - return o; - }; - plot.getData = function () { return series; }; - plot.getAxes = function () { - var res = {}, i; - $.each(xaxes.concat(yaxes), function (_, axis) { - if (axis) - res[axis.direction + (axis.n != 1 ? axis.n : "") + "axis"] = axis; - }); - return res; - }; - plot.getXAxes = function () { return xaxes; }; - plot.getYAxes = function () { return yaxes; }; - plot.c2p = canvasToAxisCoords; - plot.p2c = axisToCanvasCoords; - plot.getOptions = function () { return options; }; - plot.highlight = highlight; - plot.unhighlight = unhighlight; - plot.triggerRedrawOverlay = triggerRedrawOverlay; - plot.pointOffset = function(point) { - return { - left: parseInt(xaxes[axisNumber(point, "x") - 1].p2c(+point.x) + plotOffset.left), - top: parseInt(yaxes[axisNumber(point, "y") - 1].p2c(+point.y) + plotOffset.top) - }; - }; - plot.shutdown = shutdown; - plot.resize = function () { - getCanvasDimensions(); - resizeCanvas(canvas); - resizeCanvas(overlay); - }; - - // public attributes - plot.hooks = hooks; - - // initialize - initPlugins(plot); - parseOptions(options_); - setupCanvases(); - setData(data_); - setupGrid(); - draw(); - bindEvents(); - - - function executeHooks(hook, args) { - args = [plot].concat(args); - for (var i = 0; i < hook.length; ++i) - hook[i].apply(this, args); - } - - function initPlugins() { - for (var i = 0; i < plugins.length; ++i) { - var p = plugins[i]; - p.init(plot); - if (p.options) - $.extend(true, options, p.options); - } - } - - function parseOptions(opts) { - var i; - - $.extend(true, options, opts); - - if (options.xaxis.color == null) - options.xaxis.color = options.grid.color; - if (options.yaxis.color == null) - options.yaxis.color = options.grid.color; - - if (options.xaxis.tickColor == null) // backwards-compatibility - options.xaxis.tickColor = options.grid.tickColor; - if (options.yaxis.tickColor == null) // backwards-compatibility - options.yaxis.tickColor = options.grid.tickColor; - - if (options.grid.borderColor == null) - options.grid.borderColor = options.grid.color; - if (options.grid.tickColor == null) - options.grid.tickColor = $.color.parse(options.grid.color).scale('a', 0.22).toString(); - - // fill in defaults in axes, copy at least always the - // first as the rest of the code assumes it'll be there - for (i = 0; i < Math.max(1, options.xaxes.length); ++i) - options.xaxes[i] = $.extend(true, {}, options.xaxis, options.xaxes[i]); - for (i = 0; i < Math.max(1, options.yaxes.length); ++i) - options.yaxes[i] = $.extend(true, {}, options.yaxis, options.yaxes[i]); - - // 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.x2axis) { - options.xaxes[1] = $.extend(true, {}, options.xaxis, options.x2axis); - options.xaxes[1].position = "top"; - } - if (options.y2axis) { - options.yaxes[1] = $.extend(true, {}, options.yaxis, options.y2axis); - options.yaxes[1].position = "right"; - } - if (options.grid.coloredAreas) - options.grid.markings = options.grid.coloredAreas; - if (options.grid.coloredAreasColor) - options.grid.markingsColor = options.grid.coloredAreasColor; - if (options.lines) - $.extend(true, options.series.lines, options.lines); - if (options.points) - $.extend(true, options.series.points, options.points); - if (options.bars) - $.extend(true, options.series.bars, options.bars); - if (options.shadowSize != null) - options.series.shadowSize = options.shadowSize; - - // save options on axes for future reference - for (i = 0; i < options.xaxes.length; ++i) - getOrCreateAxis(xaxes, i + 1).options = options.xaxes[i]; - for (i = 0; i < options.yaxes.length; ++i) - getOrCreateAxis(yaxes, i + 1).options = options.yaxes[i]; - - // add hooks from options - for (var n in hooks) - if (options.hooks[n] && options.hooks[n].length) - hooks[n] = hooks[n].concat(options.hooks[n]); - - executeHooks(hooks.processOptions, [options]); - } - - function setData(d) { - series = parseData(d); - fillInSeriesOptions(); - processData(); - } - - function parseData(d) { - var res = []; - for (var i = 0; i < d.length; ++i) { - var s = $.extend(true, {}, options.series); - - if (d[i].data != null) { - s.data = d[i].data; // move the data instead of deep-copy - delete d[i].data; - - $.extend(true, s, d[i]); - - d[i].data = s.data; - } - else - s.data = d[i]; - res.push(s); - } - - return res; - } - - function axisNumber(obj, coord) { - var a = obj[coord + "axis"]; - if (typeof a == "object") // if we got a real axis, extract number - a = a.n; - if (typeof a != "number") - a = 1; // default to first axis - return a; - } - - function allAxes() { - // return flat array without annoying null entries - return $.grep(xaxes.concat(yaxes), function (a) { return a; }); - } - - function canvasToAxisCoords(pos) { - // return an object with x/y corresponding to all used axes - var res = {}, i, axis; - for (i = 0; i < xaxes.length; ++i) { - axis = xaxes[i]; - if (axis && axis.used) - res["x" + axis.n] = axis.c2p(pos.left); - } - - for (i = 0; i < yaxes.length; ++i) { - axis = yaxes[i]; - if (axis && axis.used) - res["y" + axis.n] = axis.c2p(pos.top); - } - - if (res.x1 !== undefined) - res.x = res.x1; - if (res.y1 !== undefined) - res.y = res.y1; - - return res; - } - - function axisToCanvasCoords(pos) { - // get canvas coords from the first pair of x/y found in pos - var res = {}, i, axis, key; - - for (i = 0; i < xaxes.length; ++i) { - axis = xaxes[i]; - if (axis && axis.used) { - key = "x" + axis.n; - if (pos[key] == null && axis.n == 1) - key = "x"; - - if (pos[key] != null) { - res.left = axis.p2c(pos[key]); - break; - } - } - } - - for (i = 0; i < yaxes.length; ++i) { - axis = yaxes[i]; - if (axis && axis.used) { - key = "y" + axis.n; - if (pos[key] == null && axis.n == 1) - key = "y"; - - if (pos[key] != null) { - res.top = axis.p2c(pos[key]); - break; - } - } - } - - return res; - } - - function getOrCreateAxis(axes, number) { - if (!axes[number - 1]) - axes[number - 1] = { - n: number, // save the number for future reference - direction: axes == xaxes ? "x" : "y", - options: $.extend(true, {}, axes == xaxes ? options.xaxis : options.yaxis) - }; - - return axes[number - 1]; - } - - function fillInSeriesOptions() { - var i; - - // collect what we already got of colors - var neededColors = series.length, - usedColors = [], - assignedColors = []; - for (i = 0; i < series.length; ++i) { - var sc = series[i].color; - if (sc != null) { - --neededColors; - if (typeof sc == "number") - assignedColors.push(sc); - else - usedColors.push($.color.parse(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 = $.color.make(100, 100, 100); - else - c = $.color.parse(options.colors[i]); - - // vary color if needed - var sign = variation % 2 == 1 ? -1 : 1; - c.scale('rgb', 1 + sign * Math.ceil(variation / 2) * 0.2) - - // 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(); - - // turn on lines automatically in case nothing is set - if (s.lines.show == null) { - var v, show = true; - for (v in s) - if (s[v] && s[v].show) { - show = false; - break; - } - if (show) - s.lines.show = true; - } - - // setup axes - s.xaxis = getOrCreateAxis(xaxes, axisNumber(s, "x")); - s.yaxis = getOrCreateAxis(yaxes, axisNumber(s, "y")); - } - } - - function processData() { - var topSentry = Number.POSITIVE_INFINITY, - bottomSentry = Number.NEGATIVE_INFINITY, - fakeInfinity = Number.MAX_VALUE, - i, j, k, m, length, - s, points, ps, x, y, axis, val, f, p; - - function updateAxis(axis, min, max) { - if (min < axis.datamin && min != -fakeInfinity) - axis.datamin = min; - if (max > axis.datamax && max != fakeInfinity) - axis.datamax = max; - } - - $.each(allAxes(), function (_, axis) { - // init axis - axis.datamin = topSentry; - axis.datamax = bottomSentry; - axis.used = false; - }); - - for (i = 0; i < series.length; ++i) { - s = series[i]; - s.datapoints = { points: [] }; - - executeHooks(hooks.processRawData, [ s, s.data, s.datapoints ]); - } - - // first pass: clean and copy data - for (i = 0; i < series.length; ++i) { - s = series[i]; - - var data = s.data, format = s.datapoints.format; - - if (!format) { - format = []; - // find out how to copy - format.push({ x: true, number: true, required: true }); - format.push({ y: true, number: true, required: true }); - - if (s.bars.show || (s.lines.show && s.lines.fill)) { - format.push({ y: true, number: true, required: false, defaultValue: 0 }); - if (s.bars.horizontal) { - delete format[format.length - 1].y; - format[format.length - 1].x = true; - } - } - - s.datapoints.format = format; - } - - if (s.datapoints.pointsize != null) - continue; // already filled in - - s.datapoints.pointsize = format.length; - - ps = s.datapoints.pointsize; - points = s.datapoints.points; - - insertSteps = s.lines.show && s.lines.steps; - s.xaxis.used = s.yaxis.used = true; - - for (j = k = 0; j < data.length; ++j, k += ps) { - p = data[j]; - - var nullify = p == null; - if (!nullify) { - for (m = 0; m < ps; ++m) { - val = p[m]; - f = format[m]; - - if (f) { - if (f.number && val != null) { - val = +val; // convert to number - if (isNaN(val)) - val = null; - else if (val == Infinity) - val = fakeInfinity; - else if (val == -Infinity) - val = -fakeInfinity; - } - - if (val == null) { - if (f.required) - nullify = true; - - if (f.defaultValue != null) - val = f.defaultValue; - } - } - - points[k + m] = val; - } - } - - if (nullify) { - for (m = 0; m < ps; ++m) { - val = points[k + m]; - if (val != null) { - f = format[m]; - // extract min/max info - if (f.x) - updateAxis(s.xaxis, val, val); - if (f.y) - updateAxis(s.yaxis, val, val); - } - points[k + m] = null; - } - } - else { - // a little bit of line specific stuff that - // perhaps shouldn't be here, but lacking - // better means... - if (insertSteps && k > 0 - && points[k - ps] != null - && points[k - ps] != points[k] - && points[k - ps + 1] != points[k + 1]) { - // copy the point to make room for a middle point - for (m = 0; m < ps; ++m) - points[k + ps + m] = points[k + m]; - - // middle point has same y - points[k + 1] = points[k - ps + 1]; - - // we've added a point, better reflect that - k += ps; - } - } - } - } - - // give the hooks a chance to run - for (i = 0; i < series.length; ++i) { - s = series[i]; - - executeHooks(hooks.processDatapoints, [ s, s.datapoints]); - } - - // second pass: find datamax/datamin for auto-scaling - for (i = 0; i < series.length; ++i) { - s = series[i]; - points = s.datapoints.points, - ps = s.datapoints.pointsize; - - var xmin = topSentry, ymin = topSentry, - xmax = bottomSentry, ymax = bottomSentry; - - for (j = 0; j < points.length; j += ps) { - if (points[j] == null) - continue; - - for (m = 0; m < ps; ++m) { - val = points[j + m]; - f = format[m]; - if (!f || val == fakeInfinity || val == -fakeInfinity) - continue; - - if (f.x) { - if (val < xmin) - xmin = val; - if (val > xmax) - xmax = val; - } - if (f.y) { - if (val < ymin) - ymin = val; - if (val > ymax) - ymax = val; - } - } - } - - if (s.bars.show) { - // make sure we got room for the bar on the dancing floor - var delta = s.bars.align == "left" ? 0 : -s.bars.barWidth/2; - if (s.bars.horizontal) { - ymin += delta; - ymax += delta + s.bars.barWidth; - } - else { - xmin += delta; - xmax += delta + s.bars.barWidth; - } - } - - updateAxis(s.xaxis, xmin, xmax); - updateAxis(s.yaxis, ymin, ymax); - } - - $.each(allAxes(), function (_, axis) { - if (axis.datamin == topSentry) - axis.datamin = null; - if (axis.datamax == bottomSentry) - axis.datamax = null; - }); - } - - function makeCanvas(skipPositioning, cls) { - var c = document.createElement('canvas'); - c.className = cls; - c.width = canvasWidth; - c.height = canvasHeight; - - if (!skipPositioning) - $(c).css({ position: 'absolute', left: 0, top: 0 }); - - $(c).appendTo(placeholder); - - if (!c.getContext) // excanvas hack - c = window.G_vmlCanvasManager.initElement(c); - - // used for resetting in case we get replotted - c.getContext("2d").save(); - - return c; - } - - function getCanvasDimensions() { - canvasWidth = placeholder.width(); - canvasHeight = placeholder.height(); - - if (canvasWidth <= 0 || canvasHeight <= 0) - throw "Invalid dimensions for plot, width = " + canvasWidth + ", height = " + canvasHeight; - } - - function resizeCanvas(c) { - // resizing should reset the state (excanvas seems to be - // buggy though) - if (c.width != canvasWidth) - c.width = canvasWidth; - - if (c.height != canvasHeight) - c.height = canvasHeight; - - // so try to get back to the initial state (even if it's - // gone now, this should be safe according to the spec) - var cctx = c.getContext("2d"); - cctx.restore(); - - // and save again - cctx.save(); - } - - function setupCanvases() { - var reused, - existingCanvas = placeholder.children("canvas.base"), - existingOverlay = placeholder.children("canvas.overlay"); - - if (existingCanvas.length == 0 || existingOverlay == 0) { - // init everything - - placeholder.html(""); // make sure placeholder is clear - - placeholder.css({ padding: 0 }); // padding messes up the positioning - - if (placeholder.css("position") == 'static') - placeholder.css("position", "relative"); // for positioning labels and overlay - - getCanvasDimensions(); - - canvas = makeCanvas(true, "base"); - overlay = makeCanvas(false, "overlay"); // overlay canvas for interactive features - - reused = false; - } - else { - // reuse existing elements - - canvas = existingCanvas.get(0); - overlay = existingOverlay.get(0); - - reused = true; - } - - ctx = canvas.getContext("2d"); - 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]); - - if (reused) { - // run shutdown in the old plot object - placeholder.data("plot").shutdown(); - - // reset reused canvases - plot.resize(); - - // make sure overlay pixels are cleared (canvas is cleared when we redraw) - octx.clearRect(0, 0, canvasWidth, canvasHeight); - - // then whack any remaining obvious garbage left - eventHolder.unbind(); - placeholder.children().not([canvas, overlay]).remove(); - } - - // save in case we get replotted - placeholder.data("plot", plot); - } - - function bindEvents() { - // bind events - if (options.grid.hoverable) { - eventHolder.mousemove(onMouseMove); - eventHolder.mouseleave(onMouseLeave); - } - - if (options.grid.clickable) - eventHolder.click(onClick); - - executeHooks(hooks.bindEvents, [eventHolder]); - } - - function shutdown() { - if (redrawTimeout) - clearTimeout(redrawTimeout); - - eventHolder.unbind("mousemove", onMouseMove); - eventHolder.unbind("mouseleave", onMouseLeave); - eventHolder.unbind("click", onClick); - - executeHooks(hooks.shutdown, [eventHolder]); - } - - function setTransformationHelpers(axis) { - // set helper functions on the axis, assumes plot area - // has been computed already - - function identity(x) { return x; } - - var s, m, t = axis.options.transform || identity, - it = axis.options.inverseTransform; - - // precompute how much the axis is scaling a point - // in canvas space - if (axis.direction == "x") { - s = axis.scale = plotWidth / Math.abs(t(axis.max) - t(axis.min)); - m = Math.min(t(axis.max), t(axis.min)); - } - else { - s = axis.scale = plotHeight / Math.abs(t(axis.max) - t(axis.min)); - s = -s; - m = Math.max(t(axis.max), t(axis.min)); - } - - // data point to canvas coordinate - if (t == identity) // slight optimization - axis.p2c = function (p) { return (p - m) * s; }; - else - axis.p2c = function (p) { return (t(p) - m) * s; }; - // canvas coordinate to data point - if (!it) - axis.c2p = function (c) { return m + c / s; }; - else - axis.c2p = function (c) { return it(m + c / s); }; - } - - function measureTickLabels(axis) { - var opts = axis.options, i, ticks = axis.ticks || [], labels = [], - l, w = opts.labelWidth, h = opts.labelHeight, dummyDiv; - - function makeDummyDiv(labels, width) { - return $('<div style="position:absolute;top:-10000px;' + width + 'font-size:smaller">' + - '<div class="' + axis.direction + 'Axis ' + axis.direction + axis.n + 'Axis">' - + labels.join("") + '</div></div>') - .appendTo(placeholder); - } - - if (axis.direction == "x") { - // to avoid measuring the widths of the labels (it's slow), 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 (w == null) - w = Math.floor(canvasWidth / (ticks.length > 0 ? ticks.length : 1)); - - // measure x label heights - if (h == null) { - labels = []; - for (i = 0; i < ticks.length; ++i) { - l = ticks[i].label; - if (l) - labels.push('<div class="tickLabel" style="float:left;width:' + w + 'px">' + l + '</div>'); - } - - if (labels.length > 0) { - // stick them all in the same div and measure - // collective height - labels.push('<div style="clear:left"></div>'); - dummyDiv = makeDummyDiv(labels, "width:10000px;"); - h = dummyDiv.height(); - dummyDiv.remove(); - } - } - } - else if (w == null || h == null) { - // calculate y label dimensions - for (i = 0; i < ticks.length; ++i) { - l = ticks[i].label; - if (l) - labels.push('<div class="tickLabel">' + l + '</div>'); - } - - if (labels.length > 0) { - dummyDiv = makeDummyDiv(labels, ""); - if (w == null) - w = dummyDiv.children().width(); - if (h == null) - h = dummyDiv.find("div.tickLabel").height(); - dummyDiv.remove(); - } - } - - if (w == null) - w = 0; - if (h == null) - h = 0; - - axis.labelWidth = w; - axis.labelHeight = h; - } - - function allocateAxisBoxFirstPhase(axis) { - // find the bounding box of the axis by looking at label - // widths/heights and ticks, make room by diminishing the - // plotOffset - - var lw = axis.labelWidth, - lh = axis.labelHeight, - pos = axis.options.position, - tickLength = axis.options.tickLength, - axismargin = options.grid.axisMargin, - padding = options.grid.labelMargin, - all = axis.direction == "x" ? xaxes : yaxes, - index; - - // determine axis margin - var samePosition = $.grep(all, function (a) { - return a && a.options.position == pos && a.reserveSpace; - }); - if ($.inArray(axis, samePosition) == samePosition.length - 1) - axismargin = 0; // outermost - - // determine tick length - if we're innermost, we can use "full" - if (tickLength == null) - tickLength = "full"; - - var sameDirection = $.grep(all, function (a) { - return a && a.reserveSpace; - }); - - var innermost = $.inArray(axis, sameDirection) == 0; - if (!innermost && tickLength == "full") - tickLength = 5; - - if (!isNaN(+tickLength)) - padding += +tickLength; - - // compute box - if (axis.direction == "x") { - lh += padding; - - if (pos == "bottom") { - plotOffset.bottom += lh + axismargin; - axis.box = { top: canvasHeight - plotOffset.bottom, height: lh }; - } - else { - axis.box = { top: plotOffset.top + axismargin, height: lh }; - plotOffset.top += lh + axismargin; - } - } - else { - lw += padding; - - if (pos == "left") { - axis.box = { left: plotOffset.left + axismargin, width: lw }; - plotOffset.left += lw + axismargin; - } - else { - plotOffset.right += lw + axismargin; - axis.box = { left: canvasWidth - plotOffset.right, width: lw }; - } - } - - // save for future reference - axis.position = pos; - axis.tickLength = tickLength; - axis.box.padding = padding; - axis.innermost = innermost; - } - - function allocateAxisBoxSecondPhase(axis) { - // set remaining bounding box coordinates - if (axis.direction == "x") { - axis.box.left = plotOffset.left; - axis.box.width = plotWidth; - } - else { - axis.box.top = plotOffset.top; - axis.box.height = plotHeight; - } - } - - function setupGrid() { - var i, axes = allAxes(); - - // first calculate the plot and axis box dimensions - - $.each(axes, function (_, axis) { - axis.show = axis.options.show; - if (axis.show == null) - axis.show = axis.used; // by default an axis is visible if it's got data - - axis.reserveSpace = axis.show || axis.options.reserveSpace; - - setRange(axis); - }); - - allocatedAxes = $.grep(axes, function (axis) { return axis.reserveSpace; }); - - plotOffset.left = plotOffset.right = plotOffset.top = plotOffset.bottom = 0; - if (options.grid.show) { - $.each(allocatedAxes, function (_, axis) { - // make the ticks - setupTickGeneration(axis); - setTicks(axis); - snapRangeToTicks(axis, axis.ticks); - - // find labelWidth/Height for axis - measureTickLabels(axis); - }); - - // with all dimensions in house, we can compute the - // axis boxes, start from the outside (reverse order) - for (i = allocatedAxes.length - 1; i >= 0; --i) - allocateAxisBoxFirstPhase(allocatedAxes[i]); - - // make sure we've got enough space for things that - // might stick out - var minMargin = options.grid.minBorderMargin; - if (minMargin == null) { - minMargin = 0; - for (i = 0; i < series.length; ++i) - minMargin = Math.max(minMargin, series[i].points.radius + series[i].points.lineWidth/2); - } - - for (var a in plotOffset) { - plotOffset[a] += options.grid.borderWidth; - plotOffset[a] = Math.max(minMargin, plotOffset[a]); - } - } - - plotWidth = canvasWidth - plotOffset.left - plotOffset.right; - plotHeight = canvasHeight - plotOffset.bottom - plotOffset.top; - - // now we got the proper plotWidth/Height, we can compute the scaling - $.each(axes, function (_, axis) { - setTransformationHelpers(axis); - }); - - if (options.grid.show) { - $.each(allocatedAxes, function (_, axis) { - allocateAxisBoxSecondPhase(axis); - }); - - insertAxisLabels(); - } - - insertLegend(); - } - - function setRange(axis) { - var opts = axis.options, - min = +(opts.min != null ? opts.min : axis.datamin), - max = +(opts.max != null ? opts.max : axis.datamax), - delta = max - min; - - if (delta == 0.0) { - // degenerate case - var widen = max == 0 ? 1 : 0.01; - - if (opts.min == null) - min -= widen; - // always widen max if we couldn't widen min to ensure we - // don't fall into min == max which doesn't work - if (opts.max == null || opts.min != null) - max += widen; - } - else { - // consider autoscaling - var margin = opts.autoscaleMargin; - if (margin != null) { - if (opts.min == null) { - min -= delta * margin; - // make sure we don't go below zero if all values - // are positive - if (min < 0 && axis.datamin != null && axis.datamin >= 0) - min = 0; - } - if (opts.max == null) { - max += delta * margin; - if (max > 0 && axis.datamax != null && axis.datamax <= 0) - max = 0; - } - } - } - axis.min = min; - axis.max = max; - } - - function setupTickGeneration(axis) { - var opts = axis.options; - - // estimate number of ticks - var noTicks; - if (typeof opts.ticks == "number" && opts.ticks > 0) - noTicks = opts.ticks; - else - // heuristic based on the model a*sqrt(x) fitted to - // some data points that seemed reasonable - noTicks = 0.3 * Math.sqrt(axis.direction == "x" ? canvasWidth : canvasHeight); - - var delta = (axis.max - axis.min) / noTicks, - size, generator, unit, formatter, i, magn, norm; - - if (opts.mode == "time") { - // pretty handling of time - - // 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 (opts.minTickSize != null) { - if (typeof opts.tickSize == "number") - minSize = opts.tickSize; - else - minSize = opts.minTickSize[0] * timeUnitSize[opts.minTickSize[1]]; - } - - for (var 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; - } - - axis.tickSize = opts.tickSize || [size, unit]; - - 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); - 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 (opts.timeformat != null) - return $.plot.formatDate(d, opts.timeformat, opts.monthNames); - - var t = axis.tickSize[0] * timeUnitSize[axis.tickSize[1]]; - var span = axis.max - axis.min; - var suffix = (opts.twelveHourClock) ? " %p" : ""; - - if (t < timeUnitSize.minute) - fmt = "%h:%M:%S" + suffix; - else if (t < timeUnitSize.day) { - if (span < 2 * timeUnitSize.day) - fmt = "%h:%M" + suffix; - else - fmt = "%b %d %h:%M" + suffix; - } - 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 $.plot.formatDate(d, fmt, opts.monthNames); - }; - } - else { - // pretty rounding of base-10 numbers - var maxDec = opts.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 (opts.minTickSize != null && size < opts.minTickSize) - size = opts.minTickSize; - - axis.tickDecimals = Math.max(0, maxDec != null ? maxDec : dec); - axis.tickSize = opts.tickSize || size; - - 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); - ++i; - } while (v < axis.max && v != prev); - return ticks; - }; - - formatter = function (v, axis) { - return v.toFixed(axis.tickDecimals); - }; - } - - if (opts.alignTicksWithAxis != null) { - var otherAxis = (axis.direction == "x" ? xaxes : yaxes)[opts.alignTicksWithAxis - 1]; - if (otherAxis && otherAxis.used && otherAxis != axis) { - // consider snapping min/max to outermost nice ticks - var niceTicks = generator(axis); - if (niceTicks.length > 0) { - if (opts.min == null) - axis.min = Math.min(axis.min, niceTicks[0]); - if (opts.max == null && niceTicks.length > 1) - axis.max = Math.max(axis.max, niceTicks[niceTicks.length - 1]); - } - - generator = function (axis) { - // copy ticks, scaled to this axis - var ticks = [], v, i; - for (i = 0; i < otherAxis.ticks.length; ++i) { - v = (otherAxis.ticks[i].v - otherAxis.min) / (otherAxis.max - otherAxis.min); - v = axis.min + v * (axis.max - axis.min); - ticks.push(v); - } - return ticks; - }; - - // we might need an extra decimal since forced - // ticks don't necessarily fit naturally - if (axis.mode != "time" && opts.tickDecimals == null) { - var extraDec = Math.max(0, -Math.floor(Math.log(delta) / Math.LN10) + 1), - ts = generator(axis); - - // only proceed if the tick interval rounded - // with an extra decimal doesn't give us a - // zero at end - if (!(ts.length > 1 && /\..*0$/.test((ts[1] - ts[0]).toFixed(extraDec)))) - axis.tickDecimals = extraDec; - } - } - } - - axis.tickGenerator = generator; - if ($.isFunction(opts.tickFormatter)) - axis.tickFormatter = function (v, axis) { return "" + opts.tickFormatter(v, axis); }; - else - axis.tickFormatter = formatter; - } - - function setTicks(axis) { - var oticks = axis.options.ticks, ticks = []; - if (oticks == null || (typeof oticks == "number" && oticks > 0)) - ticks = axis.tickGenerator(axis); - else if (oticks) { - if ($.isFunction(oticks)) - // generate the ticks - ticks = oticks({ min: axis.min, max: axis.max }); - else - ticks = oticks; - } - - // clean up/labelify the supplied ticks, copy them over - var i, v; - axis.ticks = []; - 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); - if (!isNaN(v)) - axis.ticks.push({ v: v, label: label }); - } - } - - function snapRangeToTicks(axis, ticks) { - if (axis.options.autoscaleMargin && ticks.length > 0) { - // snap to ticks - if (axis.options.min == null) - axis.min = Math.min(axis.min, ticks[0].v); - if (axis.options.max == null && ticks.length > 1) - axis.max = Math.max(axis.max, ticks[ticks.length - 1].v); - } - } - - function draw() { - ctx.clearRect(0, 0, canvasWidth, canvasHeight); - - var grid = options.grid; - - // draw background, if any - if (grid.show && grid.backgroundColor) - drawBackground(); - - if (grid.show && !grid.aboveData) - drawGrid(); - - for (var i = 0; i < series.length; ++i) { - executeHooks(hooks.drawSeries, [ctx, series[i]]); - drawSeries(series[i]); - } - - executeHooks(hooks.draw, [ctx]); - - if (grid.show && grid.aboveData) - drawGrid(); - } - - function extractRange(ranges, coord) { - var axis, from, to, key, axes = allAxes(); - - for (i = 0; i < axes.length; ++i) { - axis = axes[i]; - if (axis.direction == coord) { - key = coord + axis.n + "axis"; - if (!ranges[key] && axis.n == 1) - key = coord + "axis"; // support x1axis as xaxis - if (ranges[key]) { - from = ranges[key].from; - to = ranges[key].to; - break; - } - } - } - - // backwards-compat stuff - to be removed in future - if (!ranges[key]) { - axis = coord == "x" ? xaxes[0] : yaxes[0]; - from = ranges[coord + "1"]; - to = ranges[coord + "2"]; - } - - // auto-reverse as an added bonus - if (from != null && to != null && from > to) { - var tmp = from; - from = to; - to = tmp; - } - - return { from: from, to: to, axis: axis }; - } - - function drawBackground() { - ctx.save(); - ctx.translate(plotOffset.left, plotOffset.top); - - ctx.fillStyle = getColorOrGradient(options.grid.backgroundColor, plotHeight, 0, "rgba(255, 255, 255, 0)"); - ctx.fillRect(0, 0, plotWidth, plotHeight); - ctx.restore(); - } - - function drawGrid() { - var i; - - ctx.save(); - ctx.translate(plotOffset.left, plotOffset.top); - - // draw markings - var markings = options.grid.markings; - if (markings) { - if ($.isFunction(markings)) { - var axes = plot.getAxes(); - // xmin etc. is backwards compatibility, to be - // removed in the future - axes.xmin = axes.xaxis.min; - axes.xmax = axes.xaxis.max; - axes.ymin = axes.yaxis.min; - axes.ymax = axes.yaxis.max; - - markings = markings(axes); - } - - 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.beginPath(); - ctx.strokeStyle = m.color || options.grid.markingsColor; - ctx.lineWidth = m.lineWidth || options.grid.markingsLineWidth; - ctx.moveTo(xrange.from, yrange.from); - ctx.lineTo(xrange.to, yrange.to); - ctx.stroke(); - } - else { - // fill area - ctx.fillStyle = m.color || options.grid.markingsColor; - ctx.fillRect(xrange.from, yrange.to, - xrange.to - xrange.from, - yrange.from - yrange.to); - } - } - } - - // draw the ticks - var axes = allAxes(), bw = options.grid.borderWidth; - - for (var j = 0; j < axes.length; ++j) { - var axis = axes[j], box = axis.box, - t = axis.tickLength, x, y, xoff, yoff; - if (!axis.show || axis.ticks.length == 0) - continue - - ctx.strokeStyle = axis.options.tickColor || $.color.parse(axis.options.color).scale('a', 0.22).toString(); - ctx.lineWidth = 1; - - // find the edges - if (axis.direction == "x") { - x = 0; - if (t == "full") - y = (axis.position == "top" ? 0 : plotHeight); - else - y = box.top - plotOffset.top + (axis.position == "top" ? box.height : 0); - } - else { - y = 0; - if (t == "full") - x = (axis.position == "left" ? 0 : plotWidth); - else - x = box.left - plotOffset.left + (axis.position == "left" ? box.width : 0); - } - - // draw tick bar - if (!axis.innermost) { - ctx.beginPath(); - xoff = yoff = 0; - if (axis.direction == "x") - xoff = plotWidth; - else - yoff = plotHeight; - - if (ctx.lineWidth == 1) { - x = Math.floor(x) + 0.5; - y = Math.floor(y) + 0.5; - } - - ctx.moveTo(x, y); - ctx.lineTo(x + xoff, y + yoff); - ctx.stroke(); - } - - // draw ticks - ctx.beginPath(); - for (i = 0; i < axis.ticks.length; ++i) { - var v = axis.ticks[i].v; - - xoff = yoff = 0; - - if (v < axis.min || v > axis.max - // skip those lying on the axes if we got a border - || (t == "full" && bw > 0 - && (v == axis.min || v == axis.max))) - continue; - - if (axis.direction == "x") { - x = axis.p2c(v); - yoff = t == "full" ? -plotHeight : t; - - if (axis.position == "top") - yoff = -yoff; - } - else { - y = axis.p2c(v); - xoff = t == "full" ? -plotWidth : t; - - if (axis.position == "left") - xoff = -xoff; - } - - if (ctx.lineWidth == 1) { - if (axis.direction == "x") - x = Math.floor(x) + 0.5; - else - y = Math.floor(y) + 0.5; - } - - ctx.moveTo(x, y); - ctx.lineTo(x + xoff, y + yoff); - } - - ctx.stroke(); - } - - - // draw border - if (bw) { - ctx.lineWidth = bw; - ctx.strokeStyle = options.grid.borderColor; - ctx.strokeRect(-bw/2, -bw/2, plotWidth + bw, plotHeight + bw); - } - - ctx.restore(); - } - - function insertAxisLabels() { - placeholder.find(".tickLabels").remove(); - - var html = ['<div class="tickLabels" style="font-size:smaller">']; - - var axes = allAxes(); - for (var j = 0; j < axes.length; ++j) { - var axis = axes[j], box = axis.box; - if (!axis.show) - continue; - //debug: html.push('<div style="position:absolute;opacity:0.10;background-color:red;left:' + box.left + 'px;top:' + box.top + 'px;width:' + box.width + 'px;height:' + box.height + 'px"></div>') - html.push('<div class="' + axis.direction + 'Axis ' + axis.direction + axis.n + 'Axis" style="color:' + axis.options.color + '">'); - 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; - - var pos = {}, align; - - if (axis.direction == "x") { - align = "center"; - pos.left = Math.round(plotOffset.left + axis.p2c(tick.v) - axis.labelWidth/2); - if (axis.position == "bottom") - pos.top = box.top + box.padding; - else - pos.bottom = canvasHeight - (box.top + box.height - box.padding); - } - else { - pos.top = Math.round(plotOffset.top + axis.p2c(tick.v) - axis.labelHeight/2); - if (axis.position == "left") { - pos.right = canvasWidth - (box.left + box.width - box.padding) - align = "right"; - } - else { - pos.left = box.left + box.padding; - align = "left"; - } - } - - pos.width = axis.labelWidth; - - var style = ["position:absolute", "text-align:" + align ]; - for (var a in pos) - style.push(a + ":" + pos[a] + "px") - - html.push('<div class="tickLabel" style="' + style.join(';') + '">' + tick.label + '</div>'); - } - html.push('</div>'); - } - - html.push('</div>'); - - placeholder.append(html.join("")); - } - - function drawSeries(series) { - if (series.lines.show) - drawSeriesLines(series); - if (series.bars.show) - drawSeriesBars(series); - if (series.points.show) - drawSeriesPoints(series); - } - - function drawSeriesLines(series) { - function plotLine(datapoints, xoffset, yoffset, axisx, axisy) { - var points = datapoints.points, - ps = datapoints.pointsize, - prevx = null, prevy = null; - - ctx.beginPath(); - for (var i = ps; i < points.length; i += ps) { - var x1 = points[i - ps], y1 = points[i - ps + 1], - x2 = points[i], y2 = points[i + 1]; - - if (x1 == null || x2 == null) - continue; - - // 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 (x1 != prevx || y1 != prevy) - ctx.moveTo(axisx.p2c(x1) + xoffset, axisy.p2c(y1) + yoffset); - - prevx = x2; - prevy = y2; - ctx.lineTo(axisx.p2c(x2) + xoffset, axisy.p2c(y2) + yoffset); - } - ctx.stroke(); - } - - function plotLineArea(datapoints, axisx, axisy) { - var points = datapoints.points, - ps = datapoints.pointsize, - bottom = Math.min(Math.max(0, axisy.min), axisy.max), - i = 0, top, areaOpen = false, - ypos = 1, segmentStart = 0, segmentEnd = 0; - - // we process each segment in two turns, first forward - // direction to sketch out top, then once we hit the - // end we go backwards to sketch the bottom - while (true) { - if (ps > 0 && i > points.length + ps) - break; - - i += ps; // ps is negative if going backwards - - var x1 = points[i - ps], - y1 = points[i - ps + ypos], - x2 = points[i], y2 = points[i + ypos]; - - if (areaOpen) { - if (ps > 0 && x1 != null && x2 == null) { - // at turning point - segmentEnd = i; - ps = -ps; - ypos = 2; - continue; - } - - if (ps < 0 && i == segmentStart + ps) { - // done with the reverse sweep - ctx.fill(); - areaOpen = false; - ps = -ps; - ypos = 1; - i = segmentStart = segmentEnd + ps; - continue; - } - } - - if (x1 == null || x2 == null) - continue; - - // 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 a flat maxed out rectangle first, then a - // triangular cutout or reverse; to find these - // keep track of the current x values - var x1old = x1, x2old = x2; - - // clip the y values, without shortcutting, we - // go through all cases in turn - - // 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) { - ctx.lineTo(axisx.p2c(x1old), axisy.p2c(y1)); - // it goes to (x1, y1), but we fill that below - } - - // fill triangular section, this sometimes result - // in redundant points if (x1, y1) hasn't changed - // from previous line to, but we just ignore that - 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) { - ctx.lineTo(axisx.p2c(x2), axisy.p2c(y2)); - ctx.lineTo(axisx.p2c(x2old), axisy.p2c(y2)); - } - } - } - - ctx.save(); - ctx.translate(plotOffset.left, plotOffset.top); - ctx.lineJoin = "round"; - - var lw = series.lines.lineWidth, - sw = series.shadowSize; - // FIXME: consider another form of shadow when filling is turned on - if (lw > 0 && sw > 0) { - // draw shadow as a thick and thin line with transparency - ctx.lineWidth = sw; - ctx.strokeStyle = "rgba(0,0,0,0.1)"; - // position shadow at angle from the mid of line - var angle = Math.PI/18; - plotLine(series.datapoints, Math.sin(angle) * (lw/2 + sw/2), Math.cos(angle) * (lw/2 + sw/2), series.xaxis, series.yaxis); - ctx.lineWidth = sw/2; - plotLine(series.datapoints, Math.sin(angle) * (lw/2 + sw/4), Math.cos(angle) * (lw/2 + sw/4), series.xaxis, series.yaxis); - } - - ctx.lineWidth = lw; - ctx.strokeStyle = series.color; - var fillStyle = getFillStyle(series.lines, series.color, 0, plotHeight); - if (fillStyle) { - ctx.fillStyle = fillStyle; - plotLineArea(series.datapoints, series.xaxis, series.yaxis); - } - - if (lw > 0) - plotLine(series.datapoints, 0, 0, series.xaxis, series.yaxis); - ctx.restore(); - } - - function drawSeriesPoints(series) { - function plotPoints(datapoints, radius, fillStyle, offset, shadow, axisx, axisy, symbol) { - var points = datapoints.points, ps = datapoints.pointsize; - - for (var i = 0; i < points.length; i += ps) { - var x = points[i], y = points[i + 1]; - if (x == null || x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max) - continue; - - ctx.beginPath(); - x = axisx.p2c(x); - y = axisy.p2c(y) + offset; - if (symbol == "circle") - ctx.arc(x, y, radius, 0, shadow ? Math.PI : Math.PI * 2, false); - else - symbol(ctx, x, y, radius, shadow); - ctx.closePath(); - - if (fillStyle) { - ctx.fillStyle = fillStyle; - ctx.fill(); - } - ctx.stroke(); - } - } - - ctx.save(); - ctx.translate(plotOffset.left, plotOffset.top); - - var lw = series.points.lineWidth, - sw = series.shadowSize, - radius = series.points.radius, - symbol = series.points.symbol; - if (lw > 0 && sw > 0) { - // draw shadow in two steps - var w = sw / 2; - ctx.lineWidth = w; - ctx.strokeStyle = "rgba(0,0,0,0.1)"; - plotPoints(series.datapoints, radius, null, w + w/2, true, - series.xaxis, series.yaxis, symbol); - - ctx.strokeStyle = "rgba(0,0,0,0.2)"; - plotPoints(series.datapoints, radius, null, w/2, true, - series.xaxis, series.yaxis, symbol); - } - - ctx.lineWidth = lw; - ctx.strokeStyle = series.color; - plotPoints(series.datapoints, radius, - getFillStyle(series.points, series.color), 0, false, - series.xaxis, series.yaxis, symbol); - ctx.restore(); - } - - function drawBar(x, y, b, barLeft, barRight, offset, fillStyleCallback, axisx, axisy, c, horizontal, lineWidth) { - var left, right, bottom, top, - drawLeft, drawRight, drawTop, drawBottom, - tmp; - - // in horizontal mode, we start the bar from the left - // instead of from the bottom so it appears to be - // horizontal rather than vertical - if (horizontal) { - drawBottom = drawRight = drawTop = true; - drawLeft = false; - left = b; - right = x; - top = y + barLeft; - bottom = y + barRight; - - // account for negative bars - if (right < left) { - tmp = right; - right = left; - left = tmp; - drawLeft = true; - drawRight = false; - } - } - else { - drawLeft = drawRight = drawTop = true; - drawBottom = false; - left = x + barLeft; - right = x + barRight; - bottom = b; - top = y; - - // account for negative bars - if (top < bottom) { - tmp = top; - top = bottom; - bottom = tmp; - 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; - } - - left = axisx.p2c(left); - bottom = axisy.p2c(bottom); - right = axisx.p2c(right); - top = axisy.p2c(top); - - // fill the bar - if (fillStyleCallback) { - c.beginPath(); - c.moveTo(left, bottom); - c.lineTo(left, top); - c.lineTo(right, top); - c.lineTo(right, bottom); - c.fillStyle = fillStyleCallback(bottom, top); - c.fill(); - } - - // draw outline - if (lineWidth > 0 && (drawLeft || drawRight || drawTop || drawBottom)) { - c.beginPath(); - - // FIXME: inline moveTo is buggy with excanvas - 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(datapoints, barLeft, barRight, offset, fillStyleCallback, axisx, axisy) { - var points = datapoints.points, ps = datapoints.pointsize; - - for (var i = 0; i < points.length; i += ps) { - if (points[i] == null) - continue; - drawBar(points[i], points[i + 1], points[i + 2], barLeft, barRight, offset, fillStyleCallback, axisx, axisy, ctx, series.bars.horizontal, series.bars.lineWidth); - } - } - - ctx.save(); - ctx.translate(plotOffset.left, plotOffset.top); - - // FIXME: figure out a way to add shadows (for instance along the right edge) - ctx.lineWidth = series.bars.lineWidth; - ctx.strokeStyle = series.color; - var barLeft = series.bars.align == "left" ? 0 : -series.bars.barWidth/2; - var fillStyleCallback = series.bars.fill ? function (bottom, top) { return getFillStyle(series.bars, series.color, bottom, top); } : null; - plotBars(series.datapoints, barLeft, barLeft + series.bars.barWidth, 0, fillStyleCallback, series.xaxis, series.yaxis); - ctx.restore(); - } - - function getFillStyle(filloptions, seriesColor, bottom, top) { - var fill = filloptions.fill; - if (!fill) - return null; - - if (filloptions.fillColor) - return getColorOrGradient(filloptions.fillColor, bottom, top, seriesColor); - - var c = $.color.parse(seriesColor); - c.a = typeof fill == "number" ? fill : 0.4; - c.normalize(); - return c.toString(); - } - - function insertLegend() { - placeholder.find(".legend").remove(); - - if (!options.legend.show) - return; - - var fragments = [], rowStarted = false, - lf = options.legend.labelFormatter, s, label; - for (var i = 0; i < series.length; ++i) { - s = series[i]; - label = s.label; - if (!label) - continue; - - if (i % options.legend.noColumns == 0) { - if (rowStarted) - fragments.push('</tr>'); - fragments.push('<tr>'); - rowStarted = true; - } - - if (lf) - label = lf(label, s); - - fragments.push( - '<td class="legendColorBox"><div style="border:1px solid ' + options.legend.labelBoxBorderColor + ';padding:1px"><div style="width:4px;height:0;border:5px solid ' + s.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 = "", - p = options.legend.position, - m = options.legend.margin; - if (m[0] == null) - m = [m, m]; - if (p.charAt(0) == "n") - pos += 'top:' + (m[1] + plotOffset.top) + 'px;'; - else if (p.charAt(0) == "s") - pos += 'bottom:' + (m[1] + plotOffset.bottom) + 'px;'; - if (p.charAt(1) == "e") - pos += 'right:' + (m[0] + plotOffset.right) + 'px;'; - else if (p.charAt(1) == "w") - pos += 'left:' + (m[0] + plotOffset.left) + 'px;'; - var legend = $('<div class="legend">' + table.replace('style="', 'style="position:absolute;' + pos +';') + '</div>').appendTo(placeholder); - 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) { - c = options.grid.backgroundColor; - if (c && typeof c == "string") - c = $.color.parse(c); - else - c = $.color.extract(legend, 'background-color'); - c.a = 1; - c = c.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 highlights = [], - redrawTimeout = null; - - // returns the data item the mouse is over, or null if none is found - function findNearbyItem(mouseX, mouseY, seriesFilter) { - var maxDistance = options.grid.mouseActiveRadius, - smallestDistance = maxDistance * maxDistance + 1, - item = null, foundPoint = false, i, j; - - for (i = series.length - 1; i >= 0; --i) { - if (!seriesFilter(series[i])) - continue; - - var s = series[i], - axisx = s.xaxis, - axisy = s.yaxis, - points = s.datapoints.points, - ps = s.datapoints.pointsize, - mx = axisx.c2p(mouseX), // precompute some stuff to make the loop faster - my = axisy.c2p(mouseY), - maxx = maxDistance / axisx.scale, - maxy = maxDistance / axisy.scale; - - // with inverse transforms, we can't use the maxx/maxy - // optimization, sadly - if (axisx.options.inverseTransform) - maxx = Number.MAX_VALUE; - if (axisy.options.inverseTransform) - maxy = Number.MAX_VALUE; - - if (s.lines.show || s.points.show) { - for (j = 0; j < points.length; j += ps) { - var x = points[j], y = points[j + 1]; - if (x == null) - continue; - - // For points and lines, the cursor must be within a - // certain distance to the data point - 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 scales 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; // we save the sqrt - - // use <= to ensure last point takes precedence - // (last generally means on top of) - if (dist < smallestDistance) { - smallestDistance = dist; - item = [i, j / ps]; - } - } - } - - if (s.bars.show && !item) { // no other point can be nearby - var barLeft = s.bars.align == "left" ? 0 : -s.bars.barWidth/2, - barRight = barLeft + s.bars.barWidth; - - for (j = 0; j < points.length; j += ps) { - var x = points[j], y = points[j + 1], b = points[j + 2]; - if (x == null) - continue; - - // for a bar graph, the cursor must be inside the bar - if (series[i].bars.horizontal ? - (mx <= Math.max(b, x) && mx >= Math.min(b, x) && - my >= y + barLeft && my <= y + barRight) : - (mx >= x + barLeft && mx <= x + barRight && - my >= Math.min(b, y) && my <= Math.max(b, y))) - item = [i, j / ps]; - } - } - } - - if (item) { - i = item[0]; - j = item[1]; - ps = series[i].datapoints.pointsize; - - return { datapoint: series[i].datapoints.points.slice(j * ps, (j + 1) * ps), - dataIndex: j, - series: series[i], - seriesIndex: i }; - } - - return null; - } - - function onMouseMove(e) { - if (options.grid.hoverable) - triggerClickHoverEvent("plothover", e, - function (s) { return s["hoverable"] != false; }); - } - - function onMouseLeave(e) { - if (options.grid.hoverable) - triggerClickHoverEvent("plothover", e, - function (s) { return false; }); - } - - function onClick(e) { - triggerClickHoverEvent("plotclick", e, - function (s) { return s["clickable"] != false; }); - } - - // trigger click or hover event (they send the same parameters - // so we share their code) - function triggerClickHoverEvent(eventname, event, seriesFilter) { - var offset = eventHolder.offset(), - canvasX = event.pageX - offset.left - plotOffset.left, - canvasY = event.pageY - offset.top - plotOffset.top, - pos = canvasToAxisCoords({ left: canvasX, top: canvasY }); - - pos.pageX = event.pageX; - pos.pageY = event.pageY; - - var item = findNearbyItem(canvasX, canvasY, seriesFilter); - - 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) { - // clear auto-highlights - for (var i = 0; i < highlights.length; ++i) { - var h = highlights[i]; - if (h.auto == eventname && - !(item && h.series == item.series && - h.point[0] == item.datapoint[0] && - h.point[1] == item.datapoint[1])) - unhighlight(h.series, h.point); - } - - if (item) - highlight(item.series, item.datapoint, eventname); - } - - placeholder.trigger(eventname, [ pos, item ]); - } - - function triggerRedrawOverlay() { - if (!redrawTimeout) - redrawTimeout = setTimeout(drawOverlay, 30); - } - - function drawOverlay() { - redrawTimeout = null; - - // draw 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(); - - executeHooks(hooks.drawOverlay, [octx]); - } - - function highlight(s, point, auto) { - if (typeof s == "number") - s = series[s]; - - if (typeof point == "number") { - var ps = s.datapoints.pointsize; - point = s.datapoints.points.slice(ps * point, ps * (point + 1)); - } - - 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 (s == null && point == null) { - highlights = []; - triggerRedrawOverlay(); - } - - 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 = $.color.parse(series.color).scale('a', 0.5).toString(); - var radius = 1.5 * pointRadius, - x = axisx.p2c(x), - y = axisy.p2c(y); - - octx.beginPath(); - if (series.points.symbol == "circle") - octx.arc(x, y, radius, 0, 2 * Math.PI, false); - else - series.points.symbol(octx, x, y, radius, false); - octx.closePath(); - octx.stroke(); - } - - function drawBarHighlight(series, point) { - octx.lineWidth = series.bars.lineWidth; - octx.strokeStyle = $.color.parse(series.color).scale('a', 0.5).toString(); - var fillStyle = $.color.parse(series.color).scale('a', 0.5).toString(); - var barLeft = series.bars.align == "left" ? 0 : -series.bars.barWidth/2; - drawBar(point[0], point[1], point[2] || 0, barLeft, barLeft + series.bars.barWidth, - 0, function () { return fillStyle; }, series.xaxis, series.yaxis, octx, series.bars.horizontal, series.bars.lineWidth); - } - - function getColorOrGradient(spec, bottom, top, defaultColor) { - if (typeof spec == "string") - return spec; - else { - // assume this is a gradient spec; IE currently only - // supports a simple vertical gradient properly, so that's - // what we support too - var gradient = ctx.createLinearGradient(0, top, 0, bottom); - - for (var i = 0, l = spec.colors.length; i < l; ++i) { - var c = spec.colors[i]; - if (typeof c != "string") { - var co = $.color.parse(defaultColor); - if (c.brightness != null) - co = co.scale('rgb', c.brightness) - if (c.opacity != null) - co.a *= c.opacity; - c = co.toString(); - } - gradient.addColorStop(i / (l - 1), c); - } - - return gradient; - } - } - } - - $.plot = function(placeholder, data, options) { - //var t0 = new Date(); - var plot = new Plot($(placeholder), data, options, $.plot.plugins); - //(window.console ? console.log : alert)("time used (msecs): " + ((new Date()).getTime() - t0.getTime())); - return plot; - }; - - $.plot.version = "0.7"; - - $.plot.plugins = []; - - // returns a string with the date d formatted according to fmt - $.plot.formatDate = function(d, fmt, monthNames) { - var leftPad = function(n) { - n = "" + n; - return n.length == 1 ? "0" + n : n; - }; - - var r = []; - var escape = false, padNext = false; - var hours = d.getUTCHours(); - var isAM = hours < 12; - if (monthNames == null) - monthNames = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]; - - if (fmt.search(/%p|%P/) != -1) { - if (hours > 12) { - hours = hours - 12; - } else if (hours == 0) { - hours = 12; - } - } - for (var i = 0; i < fmt.length; ++i) { - var c = fmt.charAt(i); - - if (escape) { - switch (c) { - case 'h': c = "" + hours; break; - case 'H': c = leftPad(hours); 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; - case 'p': c = (isAM) ? ("" + "am") : ("" + "pm"); break; - case 'P': c = (isAM) ? ("" + "AM") : ("" + "PM"); break; - case '0': c = ""; padNext = true; break; - } - if (c && padNext) { - c = leftPad(c); - padNext = false; - } - r.push(c); - if (!padNext) - escape = false; - } - else { - if (c == "%") - escape = true; - else - r.push(c); - } - } - return r.join(""); - }; - - // round to nearby lower multiple of base - function floorInBase(n, base) { - return base * Math.floor(n / base); - } - -})(jQuery); |