+++ /dev/null
-/* Javascript plotting library for jQuery, version 0.8.2.
-
-Copyright (c) 2007-2013 IOLA and Ole Laursen.
-Licensed under the MIT license.
-
-*/
-
-// 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);
- * $.color.make(100, 50, 25, 0.4).toString() // returns "rgba(100,50,25,0.4)"
- *
- * Note that .scale() and .add() return the same modified object
- * instead of making a new one.
- *
- * V. 1.1: Fix error handling so e.g. parsing an empty string does
- * produce a color rather than just crashing.
- */
-(function($){$.color={};$.color.make=function(r,g,b,a){var o={};o.r=r||0;o.g=g||0;o.b=b||0;o.a=a!=null?a:1;o.add=function(c,d){for(var i=0;i<c.length;++i)o[c.charAt(i)]+=d;return o.normalize()};o.scale=function(c,f){for(var i=0;i<c.length;++i)o[c.charAt(i)]*=f;return o.normalize()};o.toString=function(){if(o.a>=1){return"rgb("+[o.r,o.g,o.b].join(",")+")"}else{return"rgba("+[o.r,o.g,o.b,o.a].join(",")+")"}};o.normalize=function(){function clamp(min,value,max){return value<min?min:value>max?max:value}o.r=clamp(0,parseInt(o.r),255);o.g=clamp(0,parseInt(o.g),255);o.b=clamp(0,parseInt(o.b),255);o.a=clamp(0,o.a,1);return o};o.clone=function(){return $.color.make(o.r,o.b,o.g,o.a)};return o.normalize()};$.color.extract=function(elem,css){var c;do{c=elem.css(css).toLowerCase();if(c!=""&&c!="transparent")break;elem=elem.parent()}while(elem.length&&!$.nodeName(elem.get(0),"body"));if(c=="rgba(0, 0, 0, 0)")c="transparent";return $.color.parse(c)};$.color.parse=function(str){var res,m=$.color.make;if(res=/rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(str))return m(parseInt(res[1],10),parseInt(res[2],10),parseInt(res[3],10));if(res=/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 m(parseInt(res[1],10),parseInt(res[2],10),parseInt(res[3],10),parseFloat(res[4]));if(res=/rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(str))return m(parseFloat(res[1])*2.55,parseFloat(res[2])*2.55,parseFloat(res[3])*2.55);if(res=/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 m(parseFloat(res[1])*2.55,parseFloat(res[2])*2.55,parseFloat(res[3])*2.55,parseFloat(res[4]));if(res=/#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(str))return m(parseInt(res[1],16),parseInt(res[2],16),parseInt(res[3],16));if(res=/#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(str))return m(parseInt(res[1]+res[1],16),parseInt(res[2]+res[2],16),parseInt(res[3]+res[3],16));var name=$.trim(str).toLowerCase();if(name=="transparent")return m(255,255,255,0);else{res=lookupColors[name]||[0,0,0];return m(res[0],res[1],res[2])}};var lookupColors={aqua:[0,255,255],azure:[240,255,255],beige:[245,245,220],black:[0,0,0],blue:[0,0,255],brown:[165,42,42],cyan:[0,255,255],darkblue:[0,0,139],darkcyan:[0,139,139],darkgrey:[169,169,169],darkgreen:[0,100,0],darkkhaki:[189,183,107],darkmagenta:[139,0,139],darkolivegreen:[85,107,47],darkorange:[255,140,0],darkorchid:[153,50,204],darkred:[139,0,0],darksalmon:[233,150,122],darkviolet:[148,0,211],fuchsia:[255,0,255],gold:[255,215,0],green:[0,128,0],indigo:[75,0,130],khaki:[240,230,140],lightblue:[173,216,230],lightcyan:[224,255,255],lightgreen:[144,238,144],lightgrey:[211,211,211],lightpink:[255,182,193],lightyellow:[255,255,224],lime:[0,255,0],magenta:[255,0,255],maroon:[128,0,0],navy:[0,0,128],olive:[128,128,0],orange:[255,165,0],pink:[255,192,203],purple:[128,0,128],violet:[128,0,128],red:[255,0,0],silver:[192,192,192],white:[255,255,255],yellow:[255,255,0]}})(jQuery);
-
-// the actual Flot code
-(function($) {
-
- // Cache the prototype hasOwnProperty for faster access
-
- var hasOwnProperty = Object.prototype.hasOwnProperty;
-
- ///////////////////////////////////////////////////////////////////////////
- // The Canvas object is a wrapper around an HTML5 <canvas> tag.
- //
- // @constructor
- // @param {string} cls List of classes to apply to the canvas.
- // @param {element} container Element onto which to append the canvas.
- //
- // Requiring a container is a little iffy, but unfortunately canvas
- // operations don't work unless the canvas is attached to the DOM.
-
- function Canvas(cls, container) {
-
- var element = container.children("." + cls)[0];
-
- if (element == null) {
-
- element = document.createElement("canvas");
- element.className = cls;
-
- $(element).css({ direction: "ltr", position: "absolute", left: 0, top: 0 })
- .appendTo(container);
-
- // If HTML5 Canvas isn't available, fall back to [Ex|Flash]canvas
-
- if (!element.getContext) {
- if (window.G_vmlCanvasManager) {
- element = window.G_vmlCanvasManager.initElement(element);
- } else {
- throw new Error("Canvas is not available. If you're using IE with a fall-back such as Excanvas, then there's either a mistake in your conditional include, or the page has no DOCTYPE and is rendering in Quirks Mode.");
- }
- }
- }
-
- this.element = element;
-
- var context = this.context = element.getContext("2d");
-
- // Determine the screen's ratio of physical to device-independent
- // pixels. This is the ratio between the canvas width that the browser
- // advertises and the number of pixels actually present in that space.
-
- // The iPhone 4, for example, has a device-independent width of 320px,
- // but its screen is actually 640px wide. It therefore has a pixel
- // ratio of 2, while most normal devices have a ratio of 1.
-
- var devicePixelRatio = window.devicePixelRatio || 1,
- backingStoreRatio =
- context.webkitBackingStorePixelRatio ||
- context.mozBackingStorePixelRatio ||
- context.msBackingStorePixelRatio ||
- context.oBackingStorePixelRatio ||
- context.backingStorePixelRatio || 1;
-
- this.pixelRatio = devicePixelRatio / backingStoreRatio;
-
- // Size the canvas to match the internal dimensions of its container
-
- this.resize(container.width(), container.height());
-
- // Collection of HTML div layers for text overlaid onto the canvas
-
- this.textContainer = null;
- this.text = {};
-
- // Cache of text fragments and metrics, so we can avoid expensively
- // re-calculating them when the plot is re-rendered in a loop.
-
- this._textCache = {};
- }
-
- // Resizes the canvas to the given dimensions.
- //
- // @param {number} width New width of the canvas, in pixels.
- // @param {number} width New height of the canvas, in pixels.
-
- Canvas.prototype.resize = function(width, height) {
-
- if (width <= 0 || height <= 0) {
- throw new Error("Invalid dimensions for plot, width = " + width + ", height = " + height);
- }
-
- var element = this.element,
- context = this.context,
- pixelRatio = this.pixelRatio;
-
- // Resize the canvas, increasing its density based on the display's
- // pixel ratio; basically giving it more pixels without increasing the
- // size of its element, to take advantage of the fact that retina
- // displays have that many more pixels in the same advertised space.
-
- // Resizing should reset the state (excanvas seems to be buggy though)
-
- if (this.width != width) {
- element.width = width * pixelRatio;
- element.style.width = width + "px";
- this.width = width;
- }
-
- if (this.height != height) {
- element.height = height * pixelRatio;
- element.style.height = height + "px";
- this.height = height;
- }
-
- // Save the context, so we can reset in case we get replotted. The
- // restore ensure that we're really back at the initial state, and
- // should be safe even if we haven't saved the initial state yet.
-
- context.restore();
- context.save();
-
- // Scale the coordinate space to match the display density; so even though we
- // may have twice as many pixels, we still want lines and other drawing to
- // appear at the same size; the extra pixels will just make them crisper.
-
- context.scale(pixelRatio, pixelRatio);
- };
-
- // Clears the entire canvas area, not including any overlaid HTML text
-
- Canvas.prototype.clear = function() {
- this.context.clearRect(0, 0, this.width, this.height);
- };
-
- // Finishes rendering the canvas, including managing the text overlay.
-
- Canvas.prototype.render = function() {
-
- var cache = this._textCache;
-
- // For each text layer, add elements marked as active that haven't
- // already been rendered, and remove those that are no longer active.
-
- for (var layerKey in cache) {
- if (hasOwnProperty.call(cache, layerKey)) {
-
- var layer = this.getTextLayer(layerKey),
- layerCache = cache[layerKey];
-
- layer.hide();
-
- for (var styleKey in layerCache) {
- if (hasOwnProperty.call(layerCache, styleKey)) {
- var styleCache = layerCache[styleKey];
- for (var key in styleCache) {
- if (hasOwnProperty.call(styleCache, key)) {
-
- var positions = styleCache[key].positions;
-
- for (var i = 0, position; position = positions[i]; i++) {
- if (position.active) {
- if (!position.rendered) {
- layer.append(position.element);
- position.rendered = true;
- }
- } else {
- positions.splice(i--, 1);
- if (position.rendered) {
- position.element.detach();
- }
- }
- }
-
- if (positions.length == 0) {
- delete styleCache[key];
- }
- }
- }
- }
- }
-
- layer.show();
- }
- }
- };
-
- // Creates (if necessary) and returns the text overlay container.
- //
- // @param {string} classes String of space-separated CSS classes used to
- // uniquely identify the text layer.
- // @return {object} The jQuery-wrapped text-layer div.
-
- Canvas.prototype.getTextLayer = function(classes) {
-
- var layer = this.text[classes];
-
- // Create the text layer if it doesn't exist
-
- if (layer == null) {
-
- // Create the text layer container, if it doesn't exist
-
- if (this.textContainer == null) {
- this.textContainer = $("<div class='flot-text'></div>")
- .css({
- position: "absolute",
- top: 0,
- left: 0,
- bottom: 0,
- right: 0,
- 'font-size': "smaller",
- color: "#545454"
- })
- .insertAfter(this.element);
- }
-
- layer = this.text[classes] = $("<div></div>")
- .addClass(classes)
- .css({
- position: "absolute",
- top: 0,
- left: 0,
- bottom: 0,
- right: 0
- })
- .appendTo(this.textContainer);
- }
-
- return layer;
- };
-
- // Creates (if necessary) and returns a text info object.
- //
- // The object looks like this:
- //
- // {
- // width: Width of the text's wrapper div.
- // height: Height of the text's wrapper div.
- // element: The jQuery-wrapped HTML div containing the text.
- // positions: Array of positions at which this text is drawn.
- // }
- //
- // The positions array contains objects that look like this:
- //
- // {
- // active: Flag indicating whether the text should be visible.
- // rendered: Flag indicating whether the text is currently visible.
- // element: The jQuery-wrapped HTML div containing the text.
- // x: X coordinate at which to draw the text.
- // y: Y coordinate at which to draw the text.
- // }
- //
- // Each position after the first receives a clone of the original element.
- //
- // The idea is that that the width, height, and general 'identity' of the
- // text is constant no matter where it is placed; the placements are a
- // secondary property.
- //
- // Canvas maintains a cache of recently-used text info objects; getTextInfo
- // either returns the cached element or creates a new entry.
- //
- // @param {string} layer A string of space-separated CSS classes uniquely
- // identifying the layer containing this text.
- // @param {string} text Text string to retrieve info for.
- // @param {(string|object)=} font Either a string of space-separated CSS
- // classes or a font-spec object, defining the text's font and style.
- // @param {number=} angle Angle at which to rotate the text, in degrees.
- // Angle is currently unused, it will be implemented in the future.
- // @param {number=} width Maximum width of the text before it wraps.
- // @return {object} a text info object.
-
- Canvas.prototype.getTextInfo = function(layer, text, font, angle, width) {
-
- var textStyle, layerCache, styleCache, info;
-
- // Cast the value to a string, in case we were given a number or such
-
- text = "" + text;
-
- // If the font is a font-spec object, generate a CSS font definition
-
- if (typeof font === "object") {
- textStyle = font.style + " " + font.variant + " " + font.weight + " " + font.size + "px/" + font.lineHeight + "px " + font.family;
- } else {
- textStyle = font;
- }
-
- // Retrieve (or create) the cache for the text's layer and styles
-
- layerCache = this._textCache[layer];
-
- if (layerCache == null) {
- layerCache = this._textCache[layer] = {};
- }
-
- styleCache = layerCache[textStyle];
-
- if (styleCache == null) {
- styleCache = layerCache[textStyle] = {};
- }
-
- info = styleCache[text];
-
- // If we can't find a matching element in our cache, create a new one
-
- if (info == null) {
-
- var element = $("<div></div>").html(text)
- .css({
- position: "absolute",
- 'max-width': width,
- top: -9999
- })
- .appendTo(this.getTextLayer(layer));
-
- if (typeof font === "object") {
- element.css({
- font: textStyle,
- color: font.color
- });
- } else if (typeof font === "string") {
- element.addClass(font);
- }
-
- info = styleCache[text] = {
- width: element.outerWidth(true),
- height: element.outerHeight(true),
- element: element,
- positions: []
- };
-
- element.detach();
- }
-
- return info;
- };
-
- // Adds a text string to the canvas text overlay.
- //
- // The text isn't drawn immediately; it is marked as rendering, which will
- // result in its addition to the canvas on the next render pass.
- //
- // @param {string} layer A string of space-separated CSS classes uniquely
- // identifying the layer containing this text.
- // @param {number} x X coordinate at which to draw the text.
- // @param {number} y Y coordinate at which to draw the text.
- // @param {string} text Text string to draw.
- // @param {(string|object)=} font Either a string of space-separated CSS
- // classes or a font-spec object, defining the text's font and style.
- // @param {number=} angle Angle at which to rotate the text, in degrees.
- // Angle is currently unused, it will be implemented in the future.
- // @param {number=} width Maximum width of the text before it wraps.
- // @param {string=} halign Horizontal alignment of the text; either "left",
- // "center" or "right".
- // @param {string=} valign Vertical alignment of the text; either "top",
- // "middle" or "bottom".
-
- Canvas.prototype.addText = function(layer, x, y, text, font, angle, width, halign, valign) {
-
- var info = this.getTextInfo(layer, text, font, angle, width),
- positions = info.positions;
-
- // Tweak the div's position to match the text's alignment
-
- if (halign == "center") {
- x -= info.width / 2;
- } else if (halign == "right") {
- x -= info.width;
- }
-
- if (valign == "middle") {
- y -= info.height / 2;
- } else if (valign == "bottom") {
- y -= info.height;
- }
-
- // Determine whether this text already exists at this position.
- // If so, mark it for inclusion in the next render pass.
-
- for (var i = 0, position; position = positions[i]; i++) {
- if (position.x == x && position.y == y) {
- position.active = true;
- return;
- }
- }
-
- // If the text doesn't exist at this position, create a new entry
-
- // For the very first position we'll re-use the original element,
- // while for subsequent ones we'll clone it.
-
- position = {
- active: true,
- rendered: false,
- element: positions.length ? info.element.clone() : info.element,
- x: x,
- y: y
- };
-
- positions.push(position);
-
- // Move the element to its final position within the container
-
- position.element.css({
- top: Math.round(y),
- left: Math.round(x),
- 'text-align': halign // In case the text wraps
- });
- };
-
- // Removes one or more text strings from the canvas text overlay.
- //
- // If no parameters are given, all text within the layer is removed.
- //
- // Note that the text is not immediately removed; it is simply marked as
- // inactive, which will result in its removal on the next render pass.
- // This avoids the performance penalty for 'clear and redraw' behavior,
- // where we potentially get rid of all text on a layer, but will likely
- // add back most or all of it later, as when redrawing axes, for example.
- //
- // @param {string} layer A string of space-separated CSS classes uniquely
- // identifying the layer containing this text.
- // @param {number=} x X coordinate of the text.
- // @param {number=} y Y coordinate of the text.
- // @param {string=} text Text string to remove.
- // @param {(string|object)=} font Either a string of space-separated CSS
- // classes or a font-spec object, defining the text's font and style.
- // @param {number=} angle Angle at which the text is rotated, in degrees.
- // Angle is currently unused, it will be implemented in the future.
-
- Canvas.prototype.removeText = function(layer, x, y, text, font, angle) {
- if (text == null) {
- var layerCache = this._textCache[layer];
- if (layerCache != null) {
- for (var styleKey in layerCache) {
- if (hasOwnProperty.call(layerCache, styleKey)) {
- var styleCache = layerCache[styleKey];
- for (var key in styleCache) {
- if (hasOwnProperty.call(styleCache, key)) {
- var positions = styleCache[key].positions;
- for (var i = 0, position; position = positions[i]; i++) {
- position.active = false;
- }
- }
- }
- }
- }
- }
- } else {
- var positions = this.getTextInfo(layer, text, font, angle).positions;
- for (var i = 0, position; position = positions[i]; i++) {
- if (position.x == x && position.y == y) {
- position.active = false;
- }
- }
- }
- };
-
- ///////////////////////////////////////////////////////////////////////////
- // The top-level container for the entire plot.
-
- 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
- sorted: null // default to no legend sorting
- },
- xaxis: {
- show: null, // null = auto-detect, true = always, false = never
- position: "bottom", // or "top"
- mode: null, // null or "time"
- font: null, // null (derived from CSS in placeholder) or object like { size: 11, lineHeight: 13, style: "italic", weight: "bold", family: "sans-serif", variant: "small-caps" }
- 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
- tickDecimals: null, // no. of decimals, null means auto
- tickSize: null, // number or [number, "unit"]
- minTickSize: null // number or [number, "unit"]
- },
- 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
- // Omit 'zero', so we can later default its value to
- // match that of the 'fill' option.
- },
- bars: {
- show: false,
- lineWidth: 2, // in pixels
- barWidth: 1, // in units of the x axis
- fill: true,
- fillColor: null,
- align: "left", // "left", "right", or "center"
- horizontal: false,
- zero: true
- },
- shadowSize: 3,
- highlightColor: null
- },
- 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)"
- margin: 0, // distance from the canvas edge to the grid
- 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
- },
- interaction: {
- redrawOverlayInterval: 1000/60 // time between updates, -1 means in same flow
- },
- hooks: {}
- },
- surface = 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},
- plotWidth = 0, plotHeight = 0,
- hooks = {
- processOptions: [],
- processRawData: [],
- processDatapoints: [],
- processOffset: [],
- drawBackground: [],
- 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 surface.element; };
- 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, 10),
- top: parseInt(yaxes[axisNumber(point, "y") - 1].p2c(+point.y) + plotOffset.top, 10)
- };
- };
- plot.shutdown = shutdown;
- plot.destroy = function () {
- shutdown();
- placeholder.removeData("plot").empty();
-
- series = [];
- options = null;
- surface = null;
- overlay = null;
- eventHolder = null;
- ctx = null;
- octx = null;
- xaxes = [];
- yaxes = [];
- hooks = null;
- highlights = [];
- plot = null;
- };
- plot.resize = function () {
- var width = placeholder.width(),
- height = placeholder.height();
- surface.resize(width, height);
- overlay.resize(width, height);
- };
-
- // 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() {
-
- // References to key classes, allowing plugins to modify them
-
- var classes = {
- Canvas: Canvas
- };
-
- for (var i = 0; i < plugins.length; ++i) {
- var p = plugins[i];
- p.init(plot, classes);
- if (p.options)
- $.extend(true, options, p.options);
- }
- }
-
- function parseOptions(opts) {
-
- $.extend(true, options, opts);
-
- // $.extend merges arrays, rather than replacing them. When less
- // colors are provided than the size of the default palette, we
- // end up with those colors plus the remaining defaults, which is
- // not expected behavior; avoid it by replacing them here.
-
- if (opts && opts.colors) {
- options.colors = opts.colors;
- }
-
- if (options.xaxis.color == null)
- options.xaxis.color = $.color.parse(options.grid.color).scale('a', 0.22).toString();
- if (options.yaxis.color == null)
- options.yaxis.color = $.color.parse(options.grid.color).scale('a', 0.22).toString();
-
- if (options.xaxis.tickColor == null) // grid.tickColor for back-compatibility
- options.xaxis.tickColor = options.grid.tickColor || options.xaxis.color;
- if (options.yaxis.tickColor == null) // grid.tickColor for back-compatibility
- options.yaxis.tickColor = options.grid.tickColor || options.yaxis.color;
-
- 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 for axis options, including any unspecified
- // font-spec fields, if a font-spec was provided.
-
- // If no x/y axis options were provided, create one of each anyway,
- // since the rest of the code assumes that they exist.
-
- var i, axisOptions, axisCount,
- fontSize = placeholder.css("font-size"),
- fontSizeDefault = fontSize ? +fontSize.replace("px", "") : 13,
- fontDefaults = {
- style: placeholder.css("font-style"),
- size: Math.round(0.8 * fontSizeDefault),
- variant: placeholder.css("font-variant"),
- weight: placeholder.css("font-weight"),
- family: placeholder.css("font-family")
- };
-
- axisCount = options.xaxes.length || 1;
- for (i = 0; i < axisCount; ++i) {
-
- axisOptions = options.xaxes[i];
- if (axisOptions && !axisOptions.tickColor) {
- axisOptions.tickColor = axisOptions.color;
- }
-
- axisOptions = $.extend(true, {}, options.xaxis, axisOptions);
- options.xaxes[i] = axisOptions;
-
- if (axisOptions.font) {
- axisOptions.font = $.extend({}, fontDefaults, axisOptions.font);
- if (!axisOptions.font.color) {
- axisOptions.font.color = axisOptions.color;
- }
- if (!axisOptions.font.lineHeight) {
- axisOptions.font.lineHeight = Math.round(axisOptions.font.size * 1.15);
- }
- }
- }
-
- axisCount = options.yaxes.length || 1;
- for (i = 0; i < axisCount; ++i) {
-
- axisOptions = options.yaxes[i];
- if (axisOptions && !axisOptions.tickColor) {
- axisOptions.tickColor = axisOptions.color;
- }
-
- axisOptions = $.extend(true, {}, options.yaxis, axisOptions);
- options.yaxes[i] = axisOptions;
-
- if (axisOptions.font) {
- axisOptions.font = $.extend({}, fontDefaults, axisOptions.font);
- if (!axisOptions.font.color) {
- axisOptions.font.color = axisOptions.color;
- }
- if (!axisOptions.font.lineHeight) {
- axisOptions.font.lineHeight = Math.round(axisOptions.font.size * 1.15);
- }
- }
- }
-
- // 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;
- if (options.highlightColor != null)
- options.series.highlightColor = options.highlightColor;
-
- // 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 neededColors = series.length, maxIndex = -1, i;
-
- // Subtract the number of series that already have fixed colors or
- // color indexes from the number that we still need to generate.
-
- for (i = 0; i < series.length; ++i) {
- var sc = series[i].color;
- if (sc != null) {
- neededColors--;
- if (typeof sc == "number" && sc > maxIndex) {
- maxIndex = sc;
- }
- }
- }
-
- // If any of the series have fixed color indexes, then we need to
- // generate at least as many colors as the highest index.
-
- if (neededColors <= maxIndex) {
- neededColors = maxIndex + 1;
- }
-
- // Generate all the colors, using first the option colors and then
- // variations on those colors once they're exhausted.
-
- var c, colors = [], colorPool = options.colors,
- colorPoolSize = colorPool.length, variation = 0;
-
- for (i = 0; i < neededColors; i++) {
-
- c = $.color.parse(colorPool[i % colorPoolSize] || "#666");
-
- // Each time we exhaust the colors in the pool we adjust
- // a scaling factor used to produce more variations on
- // those colors. The factor alternates negative/positive
- // to produce lighter/darker colors.
-
- // Reset the variation after every few cycles, or else
- // it will end up producing only white or black colors.
-
- if (i % colorPoolSize == 0 && i) {
- if (variation >= 0) {
- if (variation < 0.5) {
- variation = -variation - 0.2;
- } else variation = 0;
- } else variation = -variation;
- }
-
- colors[i] = c.scale('rgb', 1 + variation);
- }
-
- // Finalize the series options, filling in their colors
-
- 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;
- }
-
- // If nothing was provided for lines.zero, default it to match
- // lines.fill, since areas by default should extend to zero.
-
- if (s.lines.zero == null) {
- s.lines.zero = !!s.lines.fill;
- }
-
- // 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,
- data, format;
-
- 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];
-
- 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)) {
- var autoscale = !!((s.bars.show && s.bars.zero) || (s.lines.show && s.lines.zero));
- format.push({ y: true, number: true, required: false, defaultValue: 0, autoscale: autoscale });
- 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;
-
- var 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.autoscale !== false) {
- 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;
- format = s.datapoints.format;
-
- 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 || f.autoscale === false || 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;
-
- switch (s.bars.align) {
- case "left":
- delta = 0;
- break;
- case "right":
- delta = -s.bars.barWidth;
- break;
- default:
- delta = -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);
- }
-
- $.each(allAxes(), function (_, axis) {
- if (axis.datamin == topSentry)
- axis.datamin = null;
- if (axis.datamax == bottomSentry)
- axis.datamax = null;
- });
- }
-
- function setupCanvases() {
-
- // Make sure the placeholder is clear of everything except canvases
- // from a previous plot in this container that we'll try to re-use.
-
- placeholder.css("padding", 0) // padding messes up the positioning
- .children().filter(function(){
- return !$(this).hasClass("flot-overlay") && !$(this).hasClass('flot-base');
- }).remove();
-
- if (placeholder.css("position") == 'static')
- placeholder.css("position", "relative"); // for positioning labels and overlay
-
- surface = new Canvas("flot-base", placeholder);
- overlay = new Canvas("flot-overlay", placeholder); // overlay canvas for interactive features
-
- ctx = surface.context;
- octx = overlay.context;
-
- // define which element we're listening for events on
- eventHolder = $(overlay.element).unbind();
-
- // If we're re-using a plot object, shut down the old one
-
- var existing = placeholder.data("plot");
-
- if (existing) {
- existing.shutdown();
- overlay.clear();
- }
-
- // save in case we get replotted
- placeholder.data("plot", plot);
- }
-
- function bindEvents() {
- // bind events
- if (options.grid.hoverable) {
- eventHolder.mousemove(onMouseMove);
-
- // Use bind, rather than .mouseleave, because we officially
- // still support jQuery 1.2.6, which doesn't define a shortcut
- // for mouseenter or mouseleave. This was a bug/oversight that
- // was fixed somewhere around 1.3.x. We can return to using
- // .mouseleave when we drop support for 1.2.6.
-
- eventHolder.bind("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,
- ticks = axis.ticks || [],
- labelWidth = opts.labelWidth || 0,
- labelHeight = opts.labelHeight || 0,
- maxWidth = labelWidth || (axis.direction == "x" ? Math.floor(surface.width / (ticks.length || 1)) : null),
- legacyStyles = axis.direction + "Axis " + axis.direction + axis.n + "Axis",
- layer = "flot-" + axis.direction + "-axis flot-" + axis.direction + axis.n + "-axis " + legacyStyles,
- font = opts.font || "flot-tick-label tickLabel";
-
- for (var i = 0; i < ticks.length; ++i) {
-
- var t = ticks[i];
-
- if (!t.label)
- continue;
-
- var info = surface.getTextInfo(layer, t.label, font, null, maxWidth);
-
- labelWidth = Math.max(labelWidth, info.width);
- labelHeight = Math.max(labelHeight, info.height);
- }
-
- axis.labelWidth = opts.labelWidth || labelWidth;
- axis.labelHeight = opts.labelHeight || labelHeight;
- }
-
- function allocateAxisBoxFirstPhase(axis) {
- // find the bounding box of the axis by looking at label
- // widths/heights and ticks, make room by diminishing the
- // plotOffset; this first phase only looks at one
- // dimension per axis, the other dimension depends on the
- // other axes so will have to wait
-
- var lw = axis.labelWidth,
- lh = axis.labelHeight,
- pos = axis.options.position,
- isXAxis = axis.direction === "x",
- tickLength = axis.options.tickLength,
- axisMargin = options.grid.axisMargin,
- padding = options.grid.labelMargin,
- innermost = true,
- outermost = true,
- first = true,
- found = false;
-
- // Determine the axis's position in its direction and on its side
-
- $.each(isXAxis ? xaxes : yaxes, function(i, a) {
- if (a && a.reserveSpace) {
- if (a === axis) {
- found = true;
- } else if (a.options.position === pos) {
- if (found) {
- outermost = false;
- } else {
- innermost = false;
- }
- }
- if (!found) {
- first = false;
- }
- }
- });
-
- // The outermost axis on each side has no margin
-
- if (outermost) {
- axisMargin = 0;
- }
-
- // The ticks for the first axis in each direction stretch across
-
- if (tickLength == null) {
- tickLength = first ? "full" : 5;
- }
-
- if (!isNaN(+tickLength))
- padding += +tickLength;
-
- if (isXAxis) {
- lh += padding;
-
- if (pos == "bottom") {
- plotOffset.bottom += lh + axisMargin;
- axis.box = { top: surface.height - 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: surface.width - plotOffset.right, width: lw };
- }
- }
-
- // save for future reference
- axis.position = pos;
- axis.tickLength = tickLength;
- axis.box.padding = padding;
- axis.innermost = innermost;
- }
-
- function allocateAxisBoxSecondPhase(axis) {
- // now that all axis boxes have been placed in one
- // dimension, we can set the remaining dimension coordinates
- if (axis.direction == "x") {
- axis.box.left = plotOffset.left - axis.labelWidth / 2;
- axis.box.width = surface.width - plotOffset.left - plotOffset.right + axis.labelWidth;
- }
- else {
- axis.box.top = plotOffset.top - axis.labelHeight / 2;
- axis.box.height = surface.height - plotOffset.bottom - plotOffset.top + axis.labelHeight;
- }
- }
-
- function adjustLayoutForThingsStickingOut() {
- // possibly adjust plot offset to ensure everything stays
- // inside the canvas and isn't clipped off
-
- var minMargin = options.grid.minBorderMargin,
- axis, i;
-
- // check stuff from the plot (FIXME: this should just read
- // a value from the series, otherwise it's impossible to
- // customize)
- if (minMargin == null) {
- minMargin = 0;
- for (i = 0; i < series.length; ++i)
- minMargin = Math.max(minMargin, 2 * (series[i].points.radius + series[i].points.lineWidth/2));
- }
-
- var margins = {
- left: minMargin,
- right: minMargin,
- top: minMargin,
- bottom: minMargin
- };
-
- // check axis labels, note we don't check the actual
- // labels but instead use the overall width/height to not
- // jump as much around with replots
- $.each(allAxes(), function (_, axis) {
- if (axis.reserveSpace && axis.ticks && axis.ticks.length) {
- var lastTick = axis.ticks[axis.ticks.length - 1];
- if (axis.direction === "x") {
- margins.left = Math.max(margins.left, axis.labelWidth / 2);
- if (lastTick.v <= axis.max) {
- margins.right = Math.max(margins.right, axis.labelWidth / 2);
- }
- } else {
- margins.bottom = Math.max(margins.bottom, axis.labelHeight / 2);
- if (lastTick.v <= axis.max) {
- margins.top = Math.max(margins.top, axis.labelHeight / 2);
- }
- }
- }
- });
-
- plotOffset.left = Math.ceil(Math.max(margins.left, plotOffset.left));
- plotOffset.right = Math.ceil(Math.max(margins.right, plotOffset.right));
- plotOffset.top = Math.ceil(Math.max(margins.top, plotOffset.top));
- plotOffset.bottom = Math.ceil(Math.max(margins.bottom, plotOffset.bottom));
- }
-
- function setupGrid() {
- var i, axes = allAxes(), showGrid = options.grid.show;
-
- // Initialize the plot's offset from the edge of the canvas
-
- for (var a in plotOffset) {
- var margin = options.grid.margin || 0;
- plotOffset[a] = typeof margin == "number" ? margin : margin[a] || 0;
- }
-
- executeHooks(hooks.processOffset, [plotOffset]);
-
- // If the grid is visible, add its border width to the offset
-
- for (var a in plotOffset) {
- if(typeof(options.grid.borderWidth) == "object") {
- plotOffset[a] += showGrid ? options.grid.borderWidth[a] : 0;
- }
- else {
- plotOffset[a] += showGrid ? options.grid.borderWidth : 0;
- }
- }
-
- // init axes
- $.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);
- });
-
- if (showGrid) {
-
- var allocatedAxes = $.grep(axes, function (axis) { return axis.reserveSpace; });
-
- $.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 calculated, we can compute the
- // axis bounding 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
- adjustLayoutForThingsStickingOut();
-
- $.each(allocatedAxes, function (_, axis) {
- allocateAxisBoxSecondPhase(axis);
- });
- }
-
- plotWidth = surface.width - plotOffset.left - plotOffset.right;
- plotHeight = surface.height - plotOffset.bottom - plotOffset.top;
-
- // now we got the proper plot dimensions, we can compute the scaling
- $.each(axes, function (_, axis) {
- setTransformationHelpers(axis);
- });
-
- if (showGrid) {
- drawAxisLabels();
- }
-
- 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" ? surface.width : surface.height);
-
- var delta = (axis.max - axis.min) / noTicks,
- dec = -Math.floor(Math.log(delta) / Math.LN10),
- maxDec = opts.tickDecimals;
-
- if (maxDec != null && dec > maxDec) {
- dec = maxDec;
- }
-
- var magn = Math.pow(10, -dec),
- norm = delta / magn, // norm is between 1.0 and 10.0
- size;
-
- 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.delta = delta;
- axis.tickDecimals = Math.max(0, maxDec != null ? maxDec : dec);
- axis.tickSize = opts.tickSize || size;
-
- // Time mode was moved to a plug-in in 0.8, but since so many people use this
- // we'll add an especially friendly make sure they remembered to include it.
-
- if (opts.mode == "time" && !axis.tickGenerator) {
- throw new Error("Time mode requires the flot.time plugin.");
- }
-
- // Flot supports base-10 axes; any other mode else is handled by a plug-in,
- // like flot.time.js.
-
- if (!axis.tickGenerator) {
-
- axis.tickGenerator = function (axis) {
-
- var ticks = [],
- 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;
- };
-
- axis.tickFormatter = function (value, axis) {
-
- var factor = axis.tickDecimals ? Math.pow(10, axis.tickDecimals) : 1;
- var formatted = "" + Math.round(value * factor) / factor;
-
- // If tickDecimals was specified, ensure that we have exactly that
- // much precision; otherwise default to the value's own precision.
-
- if (axis.tickDecimals != null) {
- var decimal = formatted.indexOf(".");
- var precision = decimal == -1 ? 0 : formatted.length - decimal - 1;
- if (precision < axis.tickDecimals) {
- return (precision ? formatted : formatted + ".") + ("" + factor).substr(1, axis.tickDecimals - precision);
- }
- }
-
- return formatted;
- };
- }
-
- if ($.isFunction(opts.tickFormatter))
- axis.tickFormatter = function (v, axis) { return "" + opts.tickFormatter(v, axis); };
-
- 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 = axis.tickGenerator(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]);
- }
-
- axis.tickGenerator = 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 && opts.tickDecimals == null) {
- var extraDec = Math.max(0, -Math.floor(Math.log(axis.delta) / Math.LN10) + 1),
- ts = axis.tickGenerator(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$/.test((ts[1] - ts[0]).toFixed(extraDec))))
- axis.tickDecimals = extraDec;
- }
- }
- }
- }
-
- function setTicks(axis) {
- var oticks = axis.options.ticks, ticks = [];
- if (oticks == null || (typeof oticks == "number" && oticks > 0))
- ticks = axis.tickGenerator(axis);
- else if (oticks) {
- if ($.isFunction(oticks))
- // generate the ticks
- ticks = oticks(axis);
- 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() {
-
- surface.clear();
-
- executeHooks(hooks.drawBackground, [ctx]);
-
- 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();
- }
-
- surface.render();
-
- // A draw implies that either the axes or data have changed, so we
- // should probably update the overlay highlights as well.
-
- triggerRedrawOverlay();
- }
-
- function extractRange(ranges, coord) {
- var axis, from, to, key, axes = allAxes();
-
- for (var 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, axes, bw, bc;
-
- ctx.save();
- ctx.translate(plotOffset.left, plotOffset.top);
-
- // draw markings
- var markings = options.grid.markings;
- if (markings) {
- if ($.isFunction(markings)) {
- 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
- 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.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.strokeStyle = axis.options.color;
- ctx.beginPath();
- xoff = yoff = 0;
- if (axis.direction == "x")
- xoff = plotWidth + 1;
- else
- yoff = plotHeight + 1;
-
- if (ctx.lineWidth == 1) {
- if (axis.direction == "x") {
- y = Math.floor(y) + 0.5;
- } else {
- x = Math.floor(x) + 0.5;
- }
- }
-
- ctx.moveTo(x, y);
- ctx.lineTo(x + xoff, y + yoff);
- ctx.stroke();
- }
-
- // draw ticks
-
- ctx.strokeStyle = axis.options.tickColor;
-
- ctx.beginPath();
- for (i = 0; i < axis.ticks.length; ++i) {
- var v = axis.ticks[i].v;
-
- xoff = yoff = 0;
-
- if (isNaN(v) || v < axis.min || v > axis.max
- // skip those lying on the axes if we got a border
- || (t == "full"
- && ((typeof bw == "object" && bw[axis.position] > 0) || 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) {
- // If either borderWidth or borderColor is an object, then draw the border
- // line by line instead of as one rectangle
- bc = options.grid.borderColor;
- if(typeof bw == "object" || typeof bc == "object") {
- if (typeof bw !== "object") {
- bw = {top: bw, right: bw, bottom: bw, left: bw};
- }
- if (typeof bc !== "object") {
- bc = {top: bc, right: bc, bottom: bc, left: bc};
- }
-
- if (bw.top > 0) {
- ctx.strokeStyle = bc.top;
- ctx.lineWidth = bw.top;
- ctx.beginPath();
- ctx.moveTo(0 - bw.left, 0 - bw.top/2);
- ctx.lineTo(plotWidth, 0 - bw.top/2);
- ctx.stroke();
- }
-
- if (bw.right > 0) {
- ctx.strokeStyle = bc.right;
- ctx.lineWidth = bw.right;
- ctx.beginPath();
- ctx.moveTo(plotWidth + bw.right / 2, 0 - bw.top);
- ctx.lineTo(plotWidth + bw.right / 2, plotHeight);
- ctx.stroke();
- }
-
- if (bw.bottom > 0) {
- ctx.strokeStyle = bc.bottom;
- ctx.lineWidth = bw.bottom;
- ctx.beginPath();
- ctx.moveTo(plotWidth + bw.right, plotHeight + bw.bottom / 2);
- ctx.lineTo(0, plotHeight + bw.bottom / 2);
- ctx.stroke();
- }
-
- if (bw.left > 0) {
- ctx.strokeStyle = bc.left;
- ctx.lineWidth = bw.left;
- ctx.beginPath();
- ctx.moveTo(0 - bw.left/2, plotHeight + bw.bottom);
- ctx.lineTo(0- bw.left/2, 0);
- ctx.stroke();
- }
- }
- else {
- ctx.lineWidth = bw;
- ctx.strokeStyle = options.grid.borderColor;
- ctx.strokeRect(-bw/2, -bw/2, plotWidth + bw, plotHeight + bw);
- }
- }
-
- ctx.restore();
- }
-
- function drawAxisLabels() {
-
- $.each(allAxes(), function (_, axis) {
- var box = axis.box,
- legacyStyles = axis.direction + "Axis " + axis.direction + axis.n + "Axis",
- layer = "flot-" + axis.direction + "-axis flot-" + axis.direction + axis.n + "-axis " + legacyStyles,
- font = axis.options.font || "flot-tick-label tickLabel",
- tick, x, y, halign, valign;
-
- // Remove text before checking for axis.show and ticks.length;
- // otherwise plugins, like flot-tickrotor, that draw their own
- // tick labels will end up with both theirs and the defaults.
-
- surface.removeText(layer);
-
- if (!axis.show || axis.ticks.length == 0)
- return;
-
- for (var i = 0; i < axis.ticks.length; ++i) {
-
- tick = axis.ticks[i];
- if (!tick.label || tick.v < axis.min || tick.v > axis.max)
- continue;
-
- if (axis.direction == "x") {
- halign = "center";
- x = plotOffset.left + axis.p2c(tick.v);
- if (axis.position == "bottom") {
- y = box.top + box.padding;
- } else {
- y = box.top + box.height - box.padding;
- valign = "bottom";
- }
- } else {
- valign = "middle";
- y = plotOffset.top + axis.p2c(tick.v);
- if (axis.position == "left") {
- x = box.left + box.width - box.padding;
- halign = "right";
- } else {
- x = box.left + box.padding;
- }
- }
-
- surface.addText(layer, x, y, tick.label, font, null, null, halign, valign);
- }
- });
- }
-
- 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 the user sets the line width to 0, we change it to a very
- // small value. A line width of 0 seems to force the default of 1.
- // Doing the conditional here allows the shadow setting to still be
- // optional even with a lineWidth of 0.
-
- if( lw == 0 )
- lw = 0.0001;
-
- 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, 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.fillStyle = fillStyleCallback(bottom, top);
- c.fillRect(left, top, right - left, bottom - top)
- }
-
- // draw outline
- if (lineWidth > 0 && (drawLeft || drawRight || drawTop || drawBottom)) {
- c.beginPath();
-
- // FIXME: inline moveTo is buggy with excanvas
- c.moveTo(left, bottom);
- if (drawLeft)
- c.lineTo(left, top);
- else
- c.moveTo(left, top);
- if (drawTop)
- c.lineTo(right, top);
- else
- c.moveTo(right, top);
- if (drawRight)
- c.lineTo(right, bottom);
- else
- c.moveTo(right, bottom);
- if (drawBottom)
- c.lineTo(left, bottom);
- else
- c.moveTo(left, bottom);
- c.stroke();
- }
- }
-
- function drawSeriesBars(series) {
- function plotBars(datapoints, barLeft, barRight, 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, 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;
-
- switch (series.bars.align) {
- case "left":
- barLeft = 0;
- break;
- case "right":
- barLeft = -series.bars.barWidth;
- break;
- default:
- barLeft = -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, 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() {
-
- if (options.legend.container != null) {
- $(options.legend.container).html("");
- } else {
- placeholder.find(".legend").remove();
- }
-
- if (!options.legend.show) {
- return;
- }
-
- var fragments = [], entries = [], rowStarted = false,
- lf = options.legend.labelFormatter, s, label;
-
- // Build a list of legend entries, with each having a label and a color
-
- for (var i = 0; i < series.length; ++i) {
- s = series[i];
- if (s.label) {
- label = lf ? lf(s.label, s) : s.label;
- if (label) {
- entries.push({
- label: label,
- color: s.color
- });
- }
- }
- }
-
- // Sort the legend using either the default or a custom comparator
-
- if (options.legend.sorted) {
- if ($.isFunction(options.legend.sorted)) {
- entries.sort(options.legend.sorted);
- } else if (options.legend.sorted == "reverse") {
- entries.reverse();
- } else {
- var ascending = options.legend.sorted != "descending";
- entries.sort(function(a, b) {
- return a.label == b.label ? 0 : (
- (a.label < b.label) != ascending ? 1 : -1 // Logical XOR
- );
- });
- }
- }
-
- // Generate markup for the list of entries, in their final order
-
- for (var i = 0; i < entries.length; ++i) {
-
- var entry = entries[i];
-
- if (i % options.legend.noColumns == 0) {
- if (rowStarted)
- fragments.push('</tr>');
- fragments.push('<tr>');
- rowStarted = true;
- }
-
- fragments.push(
- '<td class="legendColorBox"><div style="border:1px solid ' + options.legend.labelBoxBorderColor + ';padding:1px"><div style="width:4px;height:0;border:5px solid ' + entry.color + ';overflow:hidden"></div></div></td>' +
- '<td class="legendLabel">' + entry.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, ps;
-
- 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,
- mx = axisx.c2p(mouseX), // precompute some stuff to make the loop faster
- my = axisy.c2p(mouseY),
- maxx = maxDistance / axisx.scale,
- maxy = maxDistance / axisy.scale;
-
- ps = s.datapoints.pointsize;
- // 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, barRight;
-
- switch (s.bars.align) {
- case "left":
- barLeft = 0;
- break;
- case "right":
- barLeft = -s.bars.barWidth;
- break;
- default:
- barLeft = -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, 10);
- item.pageY = parseInt(item.series.yaxis.p2c(item.datapoint[1]) + offset.top + plotOffset.top, 10);
- }
-
- 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() {
- var t = options.interaction.redrawOverlayInterval;
- if (t == -1) { // skip event queue
- drawOverlay();
- return;
- }
-
- if (!redrawTimeout)
- redrawTimeout = setTimeout(drawOverlay, t);
- }
-
- function drawOverlay() {
- redrawTimeout = null;
-
- // draw highlights
- octx.save();
- overlay.clear();
- 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();
- return;
- }
-
- 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.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,
- highlightColor = (typeof series.highlightColor === "string") ? series.highlightColor : $.color.parse(series.color).scale('a', 0.5).toString();
-
- 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 = highlightColor;
- 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) {
- var highlightColor = (typeof series.highlightColor === "string") ? series.highlightColor : $.color.parse(series.color).scale('a', 0.5).toString(),
- fillStyle = highlightColor,
- barLeft;
-
- switch (series.bars.align) {
- case "left":
- barLeft = 0;
- break;
- case "right":
- barLeft = -series.bars.barWidth;
- break;
- default:
- barLeft = -series.bars.barWidth / 2;
- }
-
- octx.lineWidth = series.bars.lineWidth;
- octx.strokeStyle = highlightColor;
-
- drawBar(point[0], point[1], point[2] || 0, barLeft, barLeft + series.bars.barWidth,
- 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;
- }
- }
- }
-
- // Add the plot function to the top level of the jQuery object
-
- $.plot = function(placeholder, data, options) {
- //var t0 = new Date();
- var plot = new Plot($(placeholder), data, options, $.plot.plugins);
- //(window.console ? console.log : alert)("time used (msecs): " + ((new Date()).getTime() - t0.getTime()));
- return plot;
- };
-
- $.plot.version = "0.8.2";
-
- $.plot.plugins = [];
-
- // Also add the plot function as a chainable property
-
- $.fn.plot = function(data, options) {
- return this.each(function() {
- $.plot(this, data, options);
- });
- };
-
- // round to nearby lower multiple of base
- function floorInBase(n, base) {
- return base * Math.floor(n / base);
- }
-
-})(jQuery);
Code Review / stor4nfv.git / blobdiff