/* Javascript plotting library for jQuery, version 0.8.3. Copyright (c) 2007-2014 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=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 valuemax?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; // A shim to provide 'detach' to jQuery versions prior to 1.4. Using a DOM // operation produces the same effect as detach, i.e. removing the element // without touching its jQuery data. // Do not merge this into Flot 0.9, since it requires jQuery 1.4.4+. if (!$.fn.detach) { $.fn.detach = function() { return this.each(function() { if (this.parentNode) { this.parentNode.removeChild( this ); } }); }; } /////////////////////////////////////////////////////////////////////////// // The Canvas object is a wrapper around an HTML5 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 = $("
") .css({ position: "absolute", top: 0, left: 0, bottom: 0, right: 0, 'font-size': "smaller", color: "#545454" }) .insertAfter(this.element); } layer = this.text[classes] = $("
") .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 = $("
").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"; // Override the inherit to allow the axis to auto-scale if (options.x2axis.min == null) { options.xaxes[1].min = null; } if (options.x2axis.max == null) { options.xaxes[1].max = null; } } if (options.y2axis) { options.yaxes[1] = $.extend(true, {}, options.yaxis, options.y2axis); options.yaxes[1].position = "right"; // Override the inherit to allow the axis to auto-scale if (options.y2axis.min == null) { options.yaxes[1].min = null; } if (options.y2axis.max == null) { options.yaxes[1].max = null; } } 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.show || 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) { if (axis.direction === "x") { margins.left = Math.max(margins.left, axis.labelWidth / 2); margins.right = Math.max(margins.right, axis.labelWidth / 2); } else { margins.bottom = Math.max(margins.bottom, axis.labelHeight / 2); 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; } } $.each(axes, function (_, axis) { var axisOpts = axis.options; axis.show = axisOpts.show == null ? axis.used : axisOpts.show; axis.reserveSpace = axisOpts.reserveSpace == null ? axis.show : axisOpts.reserveSpace; setRange(axis); }); if (showGrid) { var allocatedAxes = $.grep(axes, function (axis) { return axis.show || 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, and since so many people use it // we'll add an especially friendly reminder to make sure they included 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); var xequal = xrange.from === xrange.to, yequal = yrange.from === yrange.to; if (xequal && yequal) { continue; } // then draw xrange.from = Math.floor(xrange.axis.p2c(xrange.from)); xrange.to = Math.floor(xrange.axis.p2c(xrange.to)); yrange.from = Math.floor(yrange.axis.p2c(yrange.from)); yrange.to = Math.floor(yrange.axis.p2c(yrange.to)); if (xequal || yequal) { var lineWidth = m.lineWidth || options.grid.markingsLineWidth, subPixel = lineWidth % 2 ? 0.5 : 0; ctx.beginPath(); ctx.strokeStyle = m.color || options.grid.markingsColor; ctx.lineWidth = lineWidth; if (xequal) { ctx.moveTo(xrange.to + subPixel, yrange.from); ctx.lineTo(xrange.to + subPixel, yrange.to); } else { ctx.moveTo(xrange.from, yrange.to + subPixel); ctx.lineTo(xrange.to, yrange.to + subPixel); } ctx.stroke(); } else { 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(''); fragments.push(''); rowStarted = true; } fragments.push( '
' + '' + entry.label + '' ); } if (rowStarted) fragments.push(''); if (fragments.length == 0) return; var table = '' + fragments.join("") + '
'; 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 = $('
' + table.replace('style="', 'style="position:absolute;' + pos +';') + '
').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(); $('
').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 = "0.8.3"; $.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); /* 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 = {}; // construct color object with some convenient chainable helpers $.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 >= 1.0) { 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(); } // extract CSS color property from element, going up in the DOM // if it's "transparent" $.color.extract = function (elem, css) { var c; do { c = elem.css(css).toLowerCase(); // keep going until we find an element that has color, or // we hit the body or root (have no parent) if (c != '' && c != 'transparent') break; elem = elem.parent(); } while (elem.length && !$.nodeName(elem.get(0), "body")); // catch Safari's way of signalling transparent if (c == "rgba(0, 0, 0, 0)") c = "transparent"; return $.color.parse(c); } // parse CSS color string (like "rgb(10, 32, 43)" or "#fff"), // returns color object, if parsing failed, you get black (0, 0, // 0) out $.color.parse = function (str) { var res, m = $.color.make; // Look for rgb(num,num,num) 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)); // Look for rgba(num,num,num,num) 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])); // Look for rgb(num%,num%,num%) 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); // Look for rgba(num%,num%,num%,num) 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])); // Look for #a0b1c2 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)); // Look for #fff 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)); // Otherwise, we're most likely dealing with a named color var name = $.trim(str).toLowerCase(); if (name == "transparent") return m(255, 255, 255, 0); else { // default to black 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); /* Flot plugin for drawing all elements of a plot on the canvas. Copyright (c) 2007-2014 IOLA and Ole Laursen. Licensed under the MIT license. Flot normally produces certain elements, like axis labels and the legend, using HTML elements. This permits greater interactivity and customization, and often looks better, due to cross-browser canvas text inconsistencies and limitations. It can also be desirable to render the plot entirely in canvas, particularly if the goal is to save it as an image, or if Flot is being used in a context where the HTML DOM does not exist, as is the case within Node.js. This plugin switches out Flot's standard drawing operations for canvas-only replacements. Currently the plugin supports only axis labels, but it will eventually allow every element of the plot to be rendered directly to canvas. The plugin supports these options: { canvas: boolean } The "canvas" option controls whether full canvas drawing is enabled, making it possible to toggle on and off. This is useful when a plot uses HTML text in the browser, but needs to redraw with canvas text when exporting as an image. */ (function($) { var options = { canvas: true }; var render, getTextInfo, addText; // Cache the prototype hasOwnProperty for faster access var hasOwnProperty = Object.prototype.hasOwnProperty; function init(plot, classes) { var Canvas = classes.Canvas; // We only want to replace the functions once; the second time around // we would just get our new function back. This whole replacing of // prototype functions is a disaster, and needs to be changed ASAP. if (render == null) { getTextInfo = Canvas.prototype.getTextInfo, addText = Canvas.prototype.addText, render = Canvas.prototype.render; } // Finishes rendering the canvas, including overlaid text Canvas.prototype.render = function() { if (!plot.getOptions().canvas) { return render.call(this); } var context = this.context, cache = this._textCache; // For each text layer, render elements marked as active context.save(); context.textBaseline = "middle"; for (var layerKey in cache) { if (hasOwnProperty.call(cache, layerKey)) { var layerCache = cache[layerKey]; for (var styleKey in layerCache) { if (hasOwnProperty.call(layerCache, styleKey)) { var styleCache = layerCache[styleKey], updateStyles = true; for (var key in styleCache) { if (hasOwnProperty.call(styleCache, key)) { var info = styleCache[key], positions = info.positions, lines = info.lines; // Since every element at this level of the cache have the // same font and fill styles, we can just change them once // using the values from the first element. if (updateStyles) { context.fillStyle = info.font.color; context.font = info.font.definition; updateStyles = false; } for (var i = 0, position; position = positions[i]; i++) { if (position.active) { for (var j = 0, line; line = position.lines[j]; j++) { context.fillText(lines[j].text, line[0], line[1]); } } else { positions.splice(i--, 1); } } if (positions.length == 0) { delete styleCache[key]; } } } } } } } context.restore(); }; // Creates (if necessary) and returns a text info object. // // When the canvas option is set, the object looks like this: // // { // width: Width of the text's bounding box. // height: Height of the text's bounding box. // positions: Array of positions at which this text is drawn. // lines: [{ // height: Height of this line. // widths: Width of this line. // text: Text on this line. // }], // font: { // definition: Canvas font property string. // color: Color of the text. // }, // } // // The positions array contains objects that look like this: // // { // active: Flag indicating whether the text should be visible. // lines: Array of [x, y] coordinates at which to draw the line. // x: X coordinate at which to draw the text. // y: Y coordinate at which to draw the text. // } Canvas.prototype.getTextInfo = function(layer, text, font, angle, width) { if (!plot.getOptions().canvas) { return getTextInfo.call(this, layer, text, font, angle, width); } var textStyle, layerCache, styleCache, info; // Cast the value to a string, in case we were given a number text = "" + text; // If the font is a font-spec object, generate a CSS definition if (typeof font === "object") { textStyle = font.style + " " + font.variant + " " + font.weight + " " + font.size + "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 (info == null) { var context = this.context; // If the font was provided as CSS, create a div with those // classes and examine it to generate a canvas font spec. if (typeof font !== "object") { var element = $("
 
") .css("position", "absolute") .addClass(typeof font === "string" ? font : null) .appendTo(this.getTextLayer(layer)); font = { lineHeight: element.height(), style: element.css("font-style"), variant: element.css("font-variant"), weight: element.css("font-weight"), family: element.css("font-family"), color: element.css("color") }; // Setting line-height to 1, without units, sets it equal // to the font-size, even if the font-size is abstract, // like 'smaller'. This enables us to read the real size // via the element's height, working around browsers that // return the literal 'smaller' value. font.size = element.css("line-height", 1).height(); element.remove(); } textStyle = font.style + " " + font.variant + " " + font.weight + " " + font.size + "px " + font.family; // Create a new info object, initializing the dimensions to // zero so we can count them up line-by-line. info = styleCache[text] = { width: 0, height: 0, positions: [], lines: [], font: { definition: textStyle, color: font.color } }; context.save(); context.font = textStyle; // Canvas can't handle multi-line strings; break on various // newlines, including HTML brs, to build a list of lines. // Note that we could split directly on regexps, but IE < 9 is // broken; revisit when we drop IE 7/8 support. var lines = (text + "").replace(/
|\r\n|\r/g, "\n").split("\n"); for (var i = 0; i < lines.length; ++i) { var lineText = lines[i], measured = context.measureText(lineText); info.width = Math.max(measured.width, info.width); info.height += font.lineHeight; info.lines.push({ text: lineText, width: measured.width, height: font.lineHeight }); } context.restore(); } return info; }; // Adds a text string to the canvas text overlay. Canvas.prototype.addText = function(layer, x, y, text, font, angle, width, halign, valign) { if (!plot.getOptions().canvas) { return addText.call(this, layer, x, y, text, font, angle, width, halign, valign); } var info = this.getTextInfo(layer, text, font, angle, width), positions = info.positions, lines = info.lines; // Text is drawn with baseline 'middle', which we need to account // for by adding half a line's height to the y position. y += info.height / lines.length / 2; // Tweak the initial y-position to match vertical alignment if (valign == "middle") { y = Math.round(y - info.height / 2); } else if (valign == "bottom") { y = Math.round(y - info.height); } else { y = Math.round(y); } // FIXME: LEGACY BROWSER FIX // AFFECTS: Opera < 12.00 // Offset the y coordinate, since Opera is off pretty // consistently compared to the other browsers. if (!!(window.opera && window.opera.version().split(".")[0] < 12)) { y -= 2; } // 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 position = { active: true, lines: [], x: x, y: y }; positions.push(position); // Fill in the x & y positions of each line, adjusting them // individually for horizontal alignment. for (var i = 0, line; line = lines[i]; i++) { if (halign == "center") { position.lines.push([Math.round(x - line.width / 2), y]); } else if (halign == "right") { position.lines.push([Math.round(x - line.width), y]); } else { position.lines.push([Math.round(x), y]); } y += line.height; } }; } $.plot.plugins.push({ init: init, options: options, name: "canvas", version: "1.0" }); })(jQuery); /* Flot plugin for plotting textual data or categories. Copyright (c) 2007-2014 IOLA and Ole Laursen. Licensed under the MIT license. Consider a dataset like [["February", 34], ["March", 20], ...]. This plugin allows you to plot such a dataset directly. To enable it, you must specify mode: "categories" on the axis with the textual labels, e.g. $.plot("#placeholder", data, { xaxis: { mode: "categories" } }); By default, the labels are ordered as they are met in the data series. If you need a different ordering, you can specify "categories" on the axis options and list the categories there: xaxis: { mode: "categories", categories: ["February", "March", "April"] } If you need to customize the distances between the categories, you can specify "categories" as an object mapping labels to values xaxis: { mode: "categories", categories: { "February": 1, "March": 3, "April": 4 } } If you don't specify all categories, the remaining categories will be numbered from the max value plus 1 (with a spacing of 1 between each). Internally, the plugin works by transforming the input data through an auto- generated mapping where the first category becomes 0, the second 1, etc. Hence, a point like ["February", 34] becomes [0, 34] internally in Flot (this is visible in hover and click events that return numbers rather than the category labels). The plugin also overrides the tick generator to spit out the categories as ticks instead of the values. If you need to map a value back to its label, the mapping is always accessible as "categories" on the axis object, e.g. plot.getAxes().xaxis.categories. */ (function ($) { var options = { xaxis: { categories: null }, yaxis: { categories: null } }; function processRawData(plot, series, data, datapoints) { // if categories are enabled, we need to disable // auto-transformation to numbers so the strings are intact // for later processing var xCategories = series.xaxis.options.mode == "categories", yCategories = series.yaxis.options.mode == "categories"; if (!(xCategories || yCategories)) return; var format = datapoints.format; if (!format) { // FIXME: auto-detection should really not be defined here var s = series; format = []; 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; } } datapoints.format = format; } for (var m = 0; m < format.length; ++m) { if (format[m].x && xCategories) format[m].number = false; if (format[m].y && yCategories) format[m].number = false; } } function getNextIndex(categories) { var index = -1; for (var v in categories) if (categories[v] > index) index = categories[v]; return index + 1; } function categoriesTickGenerator(axis) { var res = []; for (var label in axis.categories) { var v = axis.categories[label]; if (v >= axis.min && v <= axis.max) res.push([v, label]); } res.sort(function (a, b) { return a[0] - b[0]; }); return res; } function setupCategoriesForAxis(series, axis, datapoints) { if (series[axis].options.mode != "categories") return; if (!series[axis].categories) { // parse options var c = {}, o = series[axis].options.categories || {}; if ($.isArray(o)) { for (var i = 0; i < o.length; ++i) c[o[i]] = i; } else { for (var v in o) c[v] = o[v]; } series[axis].categories = c; } // fix ticks if (!series[axis].options.ticks) series[axis].options.ticks = categoriesTickGenerator; transformPointsOnAxis(datapoints, axis, series[axis].categories); } function transformPointsOnAxis(datapoints, axis, categories) { // go through the points, transforming them var points = datapoints.points, ps = datapoints.pointsize, format = datapoints.format, formatColumn = axis.charAt(0), index = getNextIndex(categories); for (var i = 0; i < points.length; i += ps) { if (points[i] == null) continue; for (var m = 0; m < ps; ++m) { var val = points[i + m]; if (val == null || !format[m][formatColumn]) continue; if (!(val in categories)) { categories[val] = index; ++index; } points[i + m] = categories[val]; } } } function processDatapoints(plot, series, datapoints) { setupCategoriesForAxis(series, "xaxis", datapoints); setupCategoriesForAxis(series, "yaxis", datapoints); } function init(plot) { plot.hooks.processRawData.push(processRawData); plot.hooks.processDatapoints.push(processDatapoints); } $.plot.plugins.push({ init: init, options: options, name: 'categories', version: '1.0' }); })(jQuery); /* Flot plugin for showing crosshairs when the mouse hovers over the plot. Copyright (c) 2007-2014 IOLA and Ole Laursen. Licensed under the MIT license. The plugin supports these options: crosshair: { mode: null or "x" or "y" or "xy" color: color lineWidth: number } Set the mode to one of "x", "y" or "xy". The "x" mode enables a vertical crosshair that lets you trace the values on the x axis, "y" enables a horizontal crosshair and "xy" enables them both. "color" is the color of the crosshair (default is "rgba(170, 0, 0, 0.80)"), "lineWidth" is the width of the drawn lines (default is 1). The plugin also adds four public methods: - setCrosshair( pos ) Set the position of the crosshair. Note that this is cleared if the user moves the mouse. "pos" is in coordinates of the plot and should be on the form { x: xpos, y: ypos } (you can use x2/x3/... if you're using multiple axes), which is coincidentally the same format as what you get from a "plothover" event. If "pos" is null, the crosshair is cleared. - clearCrosshair() Clear the crosshair. - lockCrosshair(pos) Cause the crosshair to lock to the current location, no longer updating if the user moves the mouse. Optionally supply a position (passed on to setCrosshair()) to move it to. Example usage: var myFlot = $.plot( $("#graph"), ..., { crosshair: { mode: "x" } } }; $("#graph").bind( "plothover", function ( evt, position, item ) { if ( item ) { // Lock the crosshair to the data point being hovered myFlot.lockCrosshair({ x: item.datapoint[ 0 ], y: item.datapoint[ 1 ] }); } else { // Return normal crosshair operation myFlot.unlockCrosshair(); } }); - unlockCrosshair() Free the crosshair to move again after locking it. */ (function ($) { var options = { crosshair: { mode: null, // one of null, "x", "y" or "xy", color: "rgba(170, 0, 0, 0.80)", lineWidth: 1 } }; function init(plot) { // position of crosshair in pixels var crosshair = { x: -1, y: -1, locked: false }; plot.setCrosshair = function setCrosshair(pos) { if (!pos) crosshair.x = -1; else { var o = plot.p2c(pos); crosshair.x = Math.max(0, Math.min(o.left, plot.width())); crosshair.y = Math.max(0, Math.min(o.top, plot.height())); } plot.triggerRedrawOverlay(); }; plot.clearCrosshair = plot.setCrosshair; // passes null for pos plot.lockCrosshair = function lockCrosshair(pos) { if (pos) plot.setCrosshair(pos); crosshair.locked = true; }; plot.unlockCrosshair = function unlockCrosshair() { crosshair.locked = false; }; function onMouseOut(e) { if (crosshair.locked) return; if (crosshair.x != -1) { crosshair.x = -1; plot.triggerRedrawOverlay(); } } function onMouseMove(e) { if (crosshair.locked) return; if (plot.getSelection && plot.getSelection()) { crosshair.x = -1; // hide the crosshair while selecting return; } var offset = plot.offset(); crosshair.x = Math.max(0, Math.min(e.pageX - offset.left, plot.width())); crosshair.y = Math.max(0, Math.min(e.pageY - offset.top, plot.height())); plot.triggerRedrawOverlay(); } plot.hooks.bindEvents.push(function (plot, eventHolder) { if (!plot.getOptions().crosshair.mode) return; eventHolder.mouseout(onMouseOut); eventHolder.mousemove(onMouseMove); }); plot.hooks.drawOverlay.push(function (plot, ctx) { var c = plot.getOptions().crosshair; if (!c.mode) return; var plotOffset = plot.getPlotOffset(); ctx.save(); ctx.translate(plotOffset.left, plotOffset.top); if (crosshair.x != -1) { var adj = plot.getOptions().crosshair.lineWidth % 2 ? 0.5 : 0; ctx.strokeStyle = c.color; ctx.lineWidth = c.lineWidth; ctx.lineJoin = "round"; ctx.beginPath(); if (c.mode.indexOf("x") != -1) { var drawX = Math.floor(crosshair.x) + adj; ctx.moveTo(drawX, 0); ctx.lineTo(drawX, plot.height()); } if (c.mode.indexOf("y") != -1) { var drawY = Math.floor(crosshair.y) + adj; ctx.moveTo(0, drawY); ctx.lineTo(plot.width(), drawY); } ctx.stroke(); } ctx.restore(); }); plot.hooks.shutdown.push(function (plot, eventHolder) { eventHolder.unbind("mouseout", onMouseOut); eventHolder.unbind("mousemove", onMouseMove); }); } $.plot.plugins.push({ init: init, options: options, name: 'crosshair', version: '1.0' }); })(jQuery); /* Flot plugin for plotting error bars. Copyright (c) 2007-2014 IOLA and Ole Laursen. Licensed under the MIT license. Error bars are used to show standard deviation and other statistical properties in a plot. * Created by Rui Pereira - rui (dot) pereira (at) gmail (dot) com This plugin allows you to plot error-bars over points. Set "errorbars" inside the points series to the axis name over which there will be error values in your data array (*even* if you do not intend to plot them later, by setting "show: null" on xerr/yerr). The plugin supports these options: series: { points: { errorbars: "x" or "y" or "xy", xerr: { show: null/false or true, asymmetric: null/false or true, upperCap: null or "-" or function, lowerCap: null or "-" or function, color: null or color, radius: null or number }, yerr: { same options as xerr } } } Each data point array is expected to be of the type: "x" [ x, y, xerr ] "y" [ x, y, yerr ] "xy" [ x, y, xerr, yerr ] Where xerr becomes xerr_lower,xerr_upper for the asymmetric error case, and equivalently for yerr. Eg., a datapoint for the "xy" case with symmetric error-bars on X and asymmetric on Y would be: [ x, y, xerr, yerr_lower, yerr_upper ] By default no end caps are drawn. Setting upperCap and/or lowerCap to "-" will draw a small cap perpendicular to the error bar. They can also be set to a user-defined drawing function, with (ctx, x, y, radius) as parameters, as eg. function drawSemiCircle( ctx, x, y, radius ) { ctx.beginPath(); ctx.arc( x, y, radius, 0, Math.PI, false ); ctx.moveTo( x - radius, y ); ctx.lineTo( x + radius, y ); ctx.stroke(); } Color and radius both default to the same ones of the points series if not set. The independent radius parameter on xerr/yerr is useful for the case when we may want to add error-bars to a line, without showing the interconnecting points (with radius: 0), and still showing end caps on the error-bars. shadowSize and lineWidth are derived as well from the points series. */ (function ($) { var options = { series: { points: { errorbars: null, //should be 'x', 'y' or 'xy' xerr: { err: 'x', show: null, asymmetric: null, upperCap: null, lowerCap: null, color: null, radius: null}, yerr: { err: 'y', show: null, asymmetric: null, upperCap: null, lowerCap: null, color: null, radius: null} } } }; function processRawData(plot, series, data, datapoints){ if (!series.points.errorbars) return; // x,y values var format = [ { x: true, number: true, required: true }, { y: true, number: true, required: true } ]; var errors = series.points.errorbars; // error bars - first X then Y if (errors == 'x' || errors == 'xy') { // lower / upper error if (series.points.xerr.asymmetric) { format.push({ x: true, number: true, required: true }); format.push({ x: true, number: true, required: true }); } else format.push({ x: true, number: true, required: true }); } if (errors == 'y' || errors == 'xy') { // lower / upper error if (series.points.yerr.asymmetric) { format.push({ y: true, number: true, required: true }); format.push({ y: true, number: true, required: true }); } else format.push({ y: true, number: true, required: true }); } datapoints.format = format; } function parseErrors(series, i){ var points = series.datapoints.points; // read errors from points array var exl = null, exu = null, eyl = null, eyu = null; var xerr = series.points.xerr, yerr = series.points.yerr; var eb = series.points.errorbars; // error bars - first X if (eb == 'x' || eb == 'xy') { if (xerr.asymmetric) { exl = points[i + 2]; exu = points[i + 3]; if (eb == 'xy') if (yerr.asymmetric){ eyl = points[i + 4]; eyu = points[i + 5]; } else eyl = points[i + 4]; } else { exl = points[i + 2]; if (eb == 'xy') if (yerr.asymmetric) { eyl = points[i + 3]; eyu = points[i + 4]; } else eyl = points[i + 3]; } // only Y } else if (eb == 'y') if (yerr.asymmetric) { eyl = points[i + 2]; eyu = points[i + 3]; } else eyl = points[i + 2]; // symmetric errors? if (exu == null) exu = exl; if (eyu == null) eyu = eyl; var errRanges = [exl, exu, eyl, eyu]; // nullify if not showing if (!xerr.show){ errRanges[0] = null; errRanges[1] = null; } if (!yerr.show){ errRanges[2] = null; errRanges[3] = null; } return errRanges; } function drawSeriesErrors(plot, ctx, s){ var points = s.datapoints.points, ps = s.datapoints.pointsize, ax = [s.xaxis, s.yaxis], radius = s.points.radius, err = [s.points.xerr, s.points.yerr]; //sanity check, in case some inverted axis hack is applied to flot var invertX = false; if (ax[0].p2c(ax[0].max) < ax[0].p2c(ax[0].min)) { invertX = true; var tmp = err[0].lowerCap; err[0].lowerCap = err[0].upperCap; err[0].upperCap = tmp; } var invertY = false; if (ax[1].p2c(ax[1].min) < ax[1].p2c(ax[1].max)) { invertY = true; var tmp = err[1].lowerCap; err[1].lowerCap = err[1].upperCap; err[1].upperCap = tmp; } for (var i = 0; i < s.datapoints.points.length; i += ps) { //parse var errRanges = parseErrors(s, i); //cycle xerr & yerr for (var e = 0; e < err.length; e++){ var minmax = [ax[e].min, ax[e].max]; //draw this error? if (errRanges[e * err.length]){ //data coordinates var x = points[i], y = points[i + 1]; //errorbar ranges var upper = [x, y][e] + errRanges[e * err.length + 1], lower = [x, y][e] - errRanges[e * err.length]; //points outside of the canvas if (err[e].err == 'x') if (y > ax[1].max || y < ax[1].min || upper < ax[0].min || lower > ax[0].max) continue; if (err[e].err == 'y') if (x > ax[0].max || x < ax[0].min || upper < ax[1].min || lower > ax[1].max) continue; // prevent errorbars getting out of the canvas var drawUpper = true, drawLower = true; if (upper > minmax[1]) { drawUpper = false; upper = minmax[1]; } if (lower < minmax[0]) { drawLower = false; lower = minmax[0]; } //sanity check, in case some inverted axis hack is applied to flot if ((err[e].err == 'x' && invertX) || (err[e].err == 'y' && invertY)) { //swap coordinates var tmp = lower; lower = upper; upper = tmp; tmp = drawLower; drawLower = drawUpper; drawUpper = tmp; tmp = minmax[0]; minmax[0] = minmax[1]; minmax[1] = tmp; } // convert to pixels x = ax[0].p2c(x), y = ax[1].p2c(y), upper = ax[e].p2c(upper); lower = ax[e].p2c(lower); minmax[0] = ax[e].p2c(minmax[0]); minmax[1] = ax[e].p2c(minmax[1]); //same style as points by default var lw = err[e].lineWidth ? err[e].lineWidth : s.points.lineWidth, sw = s.points.shadowSize != null ? s.points.shadowSize : s.shadowSize; //shadow as for points if (lw > 0 && sw > 0) { var w = sw / 2; ctx.lineWidth = w; ctx.strokeStyle = "rgba(0,0,0,0.1)"; drawError(ctx, err[e], x, y, upper, lower, drawUpper, drawLower, radius, w + w/2, minmax); ctx.strokeStyle = "rgba(0,0,0,0.2)"; drawError(ctx, err[e], x, y, upper, lower, drawUpper, drawLower, radius, w/2, minmax); } ctx.strokeStyle = err[e].color? err[e].color: s.color; ctx.lineWidth = lw; //draw it drawError(ctx, err[e], x, y, upper, lower, drawUpper, drawLower, radius, 0, minmax); } } } } function drawError(ctx,err,x,y,upper,lower,drawUpper,drawLower,radius,offset,minmax){ //shadow offset y += offset; upper += offset; lower += offset; // error bar - avoid plotting over circles if (err.err == 'x'){ if (upper > x + radius) drawPath(ctx, [[upper,y],[Math.max(x + radius,minmax[0]),y]]); else drawUpper = false; if (lower < x - radius) drawPath(ctx, [[Math.min(x - radius,minmax[1]),y],[lower,y]] ); else drawLower = false; } else { if (upper < y - radius) drawPath(ctx, [[x,upper],[x,Math.min(y - radius,minmax[0])]] ); else drawUpper = false; if (lower > y + radius) drawPath(ctx, [[x,Math.max(y + radius,minmax[1])],[x,lower]] ); else drawLower = false; } //internal radius value in errorbar, allows to plot radius 0 points and still keep proper sized caps //this is a way to get errorbars on lines without visible connecting dots radius = err.radius != null? err.radius: radius; // upper cap if (drawUpper) { if (err.upperCap == '-'){ if (err.err=='x') drawPath(ctx, [[upper,y - radius],[upper,y + radius]] ); else drawPath(ctx, [[x - radius,upper],[x + radius,upper]] ); } else if ($.isFunction(err.upperCap)){ if (err.err=='x') err.upperCap(ctx, upper, y, radius); else err.upperCap(ctx, x, upper, radius); } } // lower cap if (drawLower) { if (err.lowerCap == '-'){ if (err.err=='x') drawPath(ctx, [[lower,y - radius],[lower,y + radius]] ); else drawPath(ctx, [[x - radius,lower],[x + radius,lower]] ); } else if ($.isFunction(err.lowerCap)){ if (err.err=='x') err.lowerCap(ctx, lower, y, radius); else err.lowerCap(ctx, x, lower, radius); } } } function drawPath(ctx, pts){ ctx.beginPath(); ctx.moveTo(pts[0][0], pts[0][1]); for (var p=1; p < pts.length; p++) ctx.lineTo(pts[p][0], pts[p][1]); ctx.stroke(); } function draw(plot, ctx){ var plotOffset = plot.getPlotOffset(); ctx.save(); ctx.translate(plotOffset.left, plotOffset.top); $.each(plot.getData(), function (i, s) { if (s.points.errorbars && (s.points.xerr.show || s.points.yerr.show)) drawSeriesErrors(plot, ctx, s); }); ctx.restore(); } function init(plot) { plot.hooks.processRawData.push(processRawData); plot.hooks.draw.push(draw); } $.plot.plugins.push({ init: init, options: options, name: 'errorbars', version: '1.0' }); })(jQuery); /* Flot plugin for computing bottoms for filled line and bar charts. Copyright (c) 2007-2014 IOLA and Ole Laursen. Licensed under the MIT license. The case: you've got two series that you want to fill the area between. In Flot terms, you need to use one as the fill bottom of the other. You can specify the bottom of each data point as the third coordinate manually, or you can use this plugin to compute it for you. In order to name the other series, you need to give it an id, like this: var dataset = [ { data: [ ... ], id: "foo" } , // use default bottom { data: [ ... ], fillBetween: "foo" }, // use first dataset as bottom ]; $.plot($("#placeholder"), dataset, { lines: { show: true, fill: true }}); As a convenience, if the id given is a number that doesn't appear as an id in the series, it is interpreted as the index in the array instead (so fillBetween: 0 can also mean the first series). Internally, the plugin modifies the datapoints in each series. For line series, extra data points might be inserted through interpolation. Note that at points where the bottom line is not defined (due to a null point or start/end of line), the current line will show a gap too. The algorithm comes from the jquery.flot.stack.js plugin, possibly some code could be shared. */ (function ( $ ) { var options = { series: { fillBetween: null // or number } }; function init( plot ) { function findBottomSeries( s, allseries ) { var i; for ( i = 0; i < allseries.length; ++i ) { if ( allseries[ i ].id === s.fillBetween ) { return allseries[ i ]; } } if ( typeof s.fillBetween === "number" ) { if ( s.fillBetween < 0 || s.fillBetween >= allseries.length ) { return null; } return allseries[ s.fillBetween ]; } return null; } function computeFillBottoms( plot, s, datapoints ) { if ( s.fillBetween == null ) { return; } var other = findBottomSeries( s, plot.getData() ); if ( !other ) { return; } var ps = datapoints.pointsize, points = datapoints.points, otherps = other.datapoints.pointsize, otherpoints = other.datapoints.points, newpoints = [], px, py, intery, qx, qy, bottom, withlines = s.lines.show, withbottom = ps > 2 && datapoints.format[2].y, withsteps = withlines && s.lines.steps, fromgap = true, i = 0, j = 0, l, m; while ( true ) { if ( i >= points.length ) { break; } l = newpoints.length; if ( points[ i ] == null ) { // copy gaps for ( m = 0; m < ps; ++m ) { newpoints.push( points[ i + m ] ); } i += ps; } else if ( j >= otherpoints.length ) { // for lines, we can't use the rest of the points if ( !withlines ) { for ( m = 0; m < ps; ++m ) { newpoints.push( points[ i + m ] ); } } i += ps; } else if ( otherpoints[ j ] == null ) { // oops, got a gap for ( m = 0; m < ps; ++m ) { newpoints.push( null ); } fromgap = true; j += otherps; } else { // cases where we actually got two points px = points[ i ]; py = points[ i + 1 ]; qx = otherpoints[ j ]; qy = otherpoints[ j + 1 ]; bottom = 0; if ( px === qx ) { for ( m = 0; m < ps; ++m ) { newpoints.push( points[ i + m ] ); } //newpoints[ l + 1 ] += qy; bottom = qy; i += ps; j += otherps; } else if ( px > qx ) { // we got past point below, might need to // insert interpolated extra point if ( withlines && i > 0 && points[ i - ps ] != null ) { intery = py + ( points[ i - ps + 1 ] - py ) * ( qx - px ) / ( points[ i - ps ] - px ); newpoints.push( qx ); newpoints.push( intery ); for ( m = 2; m < ps; ++m ) { newpoints.push( points[ i + m ] ); } bottom = qy; } j += otherps; } else { // px < qx // if we come from a gap, we just skip this point if ( fromgap && withlines ) { i += ps; continue; } for ( m = 0; m < ps; ++m ) { newpoints.push( points[ i + m ] ); } // we might be able to interpolate a point below, // this can give us a better y if ( withlines && j > 0 && otherpoints[ j - otherps ] != null ) { bottom = qy + ( otherpoints[ j - otherps + 1 ] - qy ) * ( px - qx ) / ( otherpoints[ j - otherps ] - qx ); } //newpoints[l + 1] += bottom; i += ps; } fromgap = false; if ( l !== newpoints.length && withbottom ) { newpoints[ l + 2 ] = bottom; } } // maintain the line steps invariant if ( withsteps && l !== newpoints.length && l > 0 && newpoints[ l ] !== null && newpoints[ l ] !== newpoints[ l - ps ] && newpoints[ l + 1 ] !== newpoints[ l - ps + 1 ] ) { for (m = 0; m < ps; ++m) { newpoints[ l + ps + m ] = newpoints[ l + m ]; } newpoints[ l + 1 ] = newpoints[ l - ps + 1 ]; } } datapoints.points = newpoints; } plot.hooks.processDatapoints.push( computeFillBottoms ); } $.plot.plugins.push({ init: init, options: options, name: "fillbetween", version: "1.0" }); })(jQuery); /* Flot plugin for plotting images. Copyright (c) 2007-2014 IOLA and Ole Laursen. Licensed under the MIT license. The data syntax is [ [ image, x1, y1, x2, y2 ], ... ] where (x1, y1) and (x2, y2) are where you intend the two opposite corners of the image to end up in the plot. Image must be a fully loaded Javascript image (you can make one with new Image()). If the image is not complete, it's skipped when plotting. There are two helpers included for retrieving images. The easiest work the way that you put in URLs instead of images in the data, like this: [ "myimage.png", 0, 0, 10, 10 ] Then call $.plot.image.loadData( data, options, callback ) where data and options are the same as you pass in to $.plot. This loads the images, replaces the URLs in the data with the corresponding images and calls "callback" when all images are loaded (or failed loading). In the callback, you can then call $.plot with the data set. See the included example. A more low-level helper, $.plot.image.load(urls, callback) is also included. Given a list of URLs, it calls callback with an object mapping from URL to Image object when all images are loaded or have failed loading. The plugin supports these options: series: { images: { show: boolean anchor: "corner" or "center" alpha: [ 0, 1 ] } } They can be specified for a specific series: $.plot( $("#placeholder"), [{ data: [ ... ], images: { ... } ]) Note that because the data format is different from usual data points, you can't use images with anything else in a specific data series. Setting "anchor" to "center" causes the pixels in the image to be anchored at the corner pixel centers inside of at the pixel corners, effectively letting half a pixel stick out to each side in the plot. A possible future direction could be support for tiling for large images (like Google Maps). */ (function ($) { var options = { series: { images: { show: false, alpha: 1, anchor: "corner" // or "center" } } }; $.plot.image = {}; $.plot.image.loadDataImages = function (series, options, callback) { var urls = [], points = []; var defaultShow = options.series.images.show; $.each(series, function (i, s) { if (!(defaultShow || s.images.show)) return; if (s.data) s = s.data; $.each(s, function (i, p) { if (typeof p[0] == "string") { urls.push(p[0]); points.push(p); } }); }); $.plot.image.load(urls, function (loadedImages) { $.each(points, function (i, p) { var url = p[0]; if (loadedImages[url]) p[0] = loadedImages[url]; }); callback(); }); } $.plot.image.load = function (urls, callback) { var missing = urls.length, loaded = {}; if (missing == 0) callback({}); $.each(urls, function (i, url) { var handler = function () { --missing; loaded[url] = this; if (missing == 0) callback(loaded); }; $('').load(handler).error(handler).attr('src', url); }); }; function drawSeries(plot, ctx, series) { var plotOffset = plot.getPlotOffset(); if (!series.images || !series.images.show) return; var points = series.datapoints.points, ps = series.datapoints.pointsize; for (var i = 0; i < points.length; i += ps) { var img = points[i], x1 = points[i + 1], y1 = points[i + 2], x2 = points[i + 3], y2 = points[i + 4], xaxis = series.xaxis, yaxis = series.yaxis, tmp; // actually we should check img.complete, but it // appears to be a somewhat unreliable indicator in // IE6 (false even after load event) if (!img || img.width <= 0 || img.height <= 0) continue; if (x1 > x2) { tmp = x2; x2 = x1; x1 = tmp; } if (y1 > y2) { tmp = y2; y2 = y1; y1 = tmp; } // if the anchor is at the center of the pixel, expand the // image by 1/2 pixel in each direction if (series.images.anchor == "center") { tmp = 0.5 * (x2-x1) / (img.width - 1); x1 -= tmp; x2 += tmp; tmp = 0.5 * (y2-y1) / (img.height - 1); y1 -= tmp; y2 += tmp; } // clip if (x1 == x2 || y1 == y2 || x1 >= xaxis.max || x2 <= xaxis.min || y1 >= yaxis.max || y2 <= yaxis.min) continue; var sx1 = 0, sy1 = 0, sx2 = img.width, sy2 = img.height; if (x1 < xaxis.min) { sx1 += (sx2 - sx1) * (xaxis.min - x1) / (x2 - x1); x1 = xaxis.min; } if (x2 > xaxis.max) { sx2 += (sx2 - sx1) * (xaxis.max - x2) / (x2 - x1); x2 = xaxis.max; } if (y1 < yaxis.min) { sy2 += (sy1 - sy2) * (yaxis.min - y1) / (y2 - y1); y1 = yaxis.min; } if (y2 > yaxis.max) { sy1 += (sy1 - sy2) * (yaxis.max - y2) / (y2 - y1); y2 = yaxis.max; } x1 = xaxis.p2c(x1); x2 = xaxis.p2c(x2); y1 = yaxis.p2c(y1); y2 = yaxis.p2c(y2); // the transformation may have swapped us if (x1 > x2) { tmp = x2; x2 = x1; x1 = tmp; } if (y1 > y2) { tmp = y2; y2 = y1; y1 = tmp; } tmp = ctx.globalAlpha; ctx.globalAlpha *= series.images.alpha; ctx.drawImage(img, sx1, sy1, sx2 - sx1, sy2 - sy1, x1 + plotOffset.left, y1 + plotOffset.top, x2 - x1, y2 - y1); ctx.globalAlpha = tmp; } } function processRawData(plot, series, data, datapoints) { if (!series.images.show) return; // format is Image, x1, y1, x2, y2 (opposite corners) datapoints.format = [ { required: true }, { x: true, number: true, required: true }, { y: true, number: true, required: true }, { x: true, number: true, required: true }, { y: true, number: true, required: true } ]; } function init(plot) { plot.hooks.processRawData.push(processRawData); plot.hooks.drawSeries.push(drawSeries); } $.plot.plugins.push({ init: init, options: options, name: 'image', version: '1.1' }); })(jQuery); /* Flot plugin for adding the ability to pan and zoom the plot. Copyright (c) 2007-2014 IOLA and Ole Laursen. Licensed under the MIT license. The default behaviour is double click and scrollwheel up/down to zoom in, drag to pan. The plugin defines plot.zoom({ center }), plot.zoomOut() and plot.pan( offset ) so you easily can add custom controls. It also fires "plotpan" and "plotzoom" events, useful for synchronizing plots. The plugin supports these options: zoom: { interactive: false trigger: "dblclick" // or "click" for single click amount: 1.5 // 2 = 200% (zoom in), 0.5 = 50% (zoom out) } pan: { interactive: false cursor: "move" // CSS mouse cursor value used when dragging, e.g. "pointer" frameRate: 20 } xaxis, yaxis, x2axis, y2axis: { zoomRange: null // or [ number, number ] (min range, max range) or false panRange: null // or [ number, number ] (min, max) or false } "interactive" enables the built-in drag/click behaviour. If you enable interactive for pan, then you'll have a basic plot that supports moving around; the same for zoom. "amount" specifies the default amount to zoom in (so 1.5 = 150%) relative to the current viewport. "cursor" is a standard CSS mouse cursor string used for visual feedback to the user when dragging. "frameRate" specifies the maximum number of times per second the plot will update itself while the user is panning around on it (set to null to disable intermediate pans, the plot will then not update until the mouse button is released). "zoomRange" is the interval in which zooming can happen, e.g. with zoomRange: [1, 100] the zoom will never scale the axis so that the difference between min and max is smaller than 1 or larger than 100. You can set either end to null to ignore, e.g. [1, null]. If you set zoomRange to false, zooming on that axis will be disabled. "panRange" confines the panning to stay within a range, e.g. with panRange: [-10, 20] panning stops at -10 in one end and at 20 in the other. Either can be null, e.g. [-10, null]. If you set panRange to false, panning on that axis will be disabled. Example API usage: plot = $.plot(...); // zoom default amount in on the pixel ( 10, 20 ) plot.zoom({ center: { left: 10, top: 20 } }); // zoom out again plot.zoomOut({ center: { left: 10, top: 20 } }); // zoom 200% in on the pixel (10, 20) plot.zoom({ amount: 2, center: { left: 10, top: 20 } }); // pan 100 pixels to the left and 20 down plot.pan({ left: -100, top: 20 }) Here, "center" specifies where the center of the zooming should happen. Note that this is defined in pixel space, not the space of the data points (you can use the p2c helpers on the axes in Flot to help you convert between these). "amount" is the amount to zoom the viewport relative to the current range, so 1 is 100% (i.e. no change), 1.5 is 150% (zoom in), 0.7 is 70% (zoom out). You can set the default in the options. */ // First two dependencies, jquery.event.drag.js and // jquery.mousewheel.js, we put them inline here to save people the // effort of downloading them. /* jquery.event.drag.js ~ v1.5 ~ Copyright (c) 2008, Three Dub Media (http://threedubmedia.com) Licensed under the MIT License ~ http://threedubmedia.googlecode.com/files/MIT-LICENSE.txt */ (function(a){function e(h){var k,j=this,l=h.data||{};if(l.elem)j=h.dragTarget=l.elem,h.dragProxy=d.proxy||j,h.cursorOffsetX=l.pageX-l.left,h.cursorOffsetY=l.pageY-l.top,h.offsetX=h.pageX-h.cursorOffsetX,h.offsetY=h.pageY-h.cursorOffsetY;else if(d.dragging||l.which>0&&h.which!=l.which||a(h.target).is(l.not))return;switch(h.type){case"mousedown":return a.extend(l,a(j).offset(),{elem:j,target:h.target,pageX:h.pageX,pageY:h.pageY}),b.add(document,"mousemove mouseup",e,l),i(j,!1),d.dragging=null,!1;case!d.dragging&&"mousemove":if(g(h.pageX-l.pageX)+g(h.pageY-l.pageY) max) { // make sure min < max var tmp = min; min = max; max = tmp; } //Check that we are in panRange if (pr) { if (pr[0] != null && min < pr[0]) { min = pr[0]; } if (pr[1] != null && max > pr[1]) { max = pr[1]; } } var range = max - min; if (zr && ((zr[0] != null && range < zr[0] && amount >1) || (zr[1] != null && range > zr[1] && amount <1))) return; opts.min = min; opts.max = max; }); plot.setupGrid(); plot.draw(); if (!args.preventEvent) plot.getPlaceholder().trigger("plotzoom", [ plot, args ]); }; plot.pan = function (args) { var delta = { x: +args.left, y: +args.top }; if (isNaN(delta.x)) delta.x = 0; if (isNaN(delta.y)) delta.y = 0; $.each(plot.getAxes(), function (_, axis) { var opts = axis.options, min, max, d = delta[axis.direction]; min = axis.c2p(axis.p2c(axis.min) + d), max = axis.c2p(axis.p2c(axis.max) + d); var pr = opts.panRange; if (pr === false) // no panning on this axis return; if (pr) { // check whether we hit the wall if (pr[0] != null && pr[0] > min) { d = pr[0] - min; min += d; max += d; } if (pr[1] != null && pr[1] < max) { d = pr[1] - max; min += d; max += d; } } opts.min = min; opts.max = max; }); plot.setupGrid(); plot.draw(); if (!args.preventEvent) plot.getPlaceholder().trigger("plotpan", [ plot, args ]); }; function shutdown(plot, eventHolder) { eventHolder.unbind(plot.getOptions().zoom.trigger, onZoomClick); eventHolder.unbind("mousewheel", onMouseWheel); eventHolder.unbind("dragstart", onDragStart); eventHolder.unbind("drag", onDrag); eventHolder.unbind("dragend", onDragEnd); if (panTimeout) clearTimeout(panTimeout); } plot.hooks.bindEvents.push(bindEvents); plot.hooks.shutdown.push(shutdown); } $.plot.plugins.push({ init: init, options: options, name: 'navigate', version: '1.3' }); })(jQuery); /* Flot plugin for rendering pie charts. Copyright (c) 2007-2014 IOLA and Ole Laursen. Licensed under the MIT license. The plugin assumes that each series has a single data value, and that each value is a positive integer or zero. Negative numbers don't make sense for a pie chart, and have unpredictable results. The values do NOT need to be passed in as percentages; the plugin will calculate the total and per-slice percentages internally. * Created by Brian Medendorp * Updated with contributions from btburnett3, Anthony Aragues and Xavi Ivars The plugin supports these options: series: { pie: { show: true/false radius: 0-1 for percentage of fullsize, or a specified pixel length, or 'auto' innerRadius: 0-1 for percentage of fullsize or a specified pixel length, for creating a donut effect startAngle: 0-2 factor of PI used for starting angle (in radians) i.e 3/2 starts at the top, 0 and 2 have the same result tilt: 0-1 for percentage to tilt the pie, where 1 is no tilt, and 0 is completely flat (nothing will show) offset: { top: integer value to move the pie up or down left: integer value to move the pie left or right, or 'auto' }, stroke: { color: any hexidecimal color value (other formats may or may not work, so best to stick with something like '#FFF') width: integer pixel width of the stroke }, label: { show: true/false, or 'auto' formatter: a user-defined function that modifies the text/style of the label text radius: 0-1 for percentage of fullsize, or a specified pixel length background: { color: any hexidecimal color value (other formats may or may not work, so best to stick with something like '#000') opacity: 0-1 }, threshold: 0-1 for the percentage value at which to hide labels (if they're too small) }, combine: { threshold: 0-1 for the percentage value at which to combine slices (if they're too small) color: any hexidecimal color value (other formats may or may not work, so best to stick with something like '#CCC'), if null, the plugin will automatically use the color of the first slice to be combined label: any text value of what the combined slice should be labeled } highlight: { opacity: 0-1 } } } More detail and specific examples can be found in the included HTML file. */ (function($) { // Maximum redraw attempts when fitting labels within the plot var REDRAW_ATTEMPTS = 10; // Factor by which to shrink the pie when fitting labels within the plot var REDRAW_SHRINK = 0.95; function init(plot) { var canvas = null, target = null, options = null, maxRadius = null, centerLeft = null, centerTop = null, processed = false, ctx = null; // interactive variables var highlights = []; // add hook to determine if pie plugin in enabled, and then perform necessary operations plot.hooks.processOptions.push(function(plot, options) { if (options.series.pie.show) { options.grid.show = false; // set labels.show if (options.series.pie.label.show == "auto") { if (options.legend.show) { options.series.pie.label.show = false; } else { options.series.pie.label.show = true; } } // set radius if (options.series.pie.radius == "auto") { if (options.series.pie.label.show) { options.series.pie.radius = 3/4; } else { options.series.pie.radius = 1; } } // ensure sane tilt if (options.series.pie.tilt > 1) { options.series.pie.tilt = 1; } else if (options.series.pie.tilt < 0) { options.series.pie.tilt = 0; } } }); plot.hooks.bindEvents.push(function(plot, eventHolder) { var options = plot.getOptions(); if (options.series.pie.show) { if (options.grid.hoverable) { eventHolder.unbind("mousemove").mousemove(onMouseMove); } if (options.grid.clickable) { eventHolder.unbind("click").click(onClick); } } }); plot.hooks.processDatapoints.push(function(plot, series, data, datapoints) { var options = plot.getOptions(); if (options.series.pie.show) { processDatapoints(plot, series, data, datapoints); } }); plot.hooks.drawOverlay.push(function(plot, octx) { var options = plot.getOptions(); if (options.series.pie.show) { drawOverlay(plot, octx); } }); plot.hooks.draw.push(function(plot, newCtx) { var options = plot.getOptions(); if (options.series.pie.show) { draw(plot, newCtx); } }); function processDatapoints(plot, series, datapoints) { if (!processed) { processed = true; canvas = plot.getCanvas(); target = $(canvas).parent(); options = plot.getOptions(); plot.setData(combine(plot.getData())); } } function combine(data) { var total = 0, combined = 0, numCombined = 0, color = options.series.pie.combine.color, newdata = []; // Fix up the raw data from Flot, ensuring the data is numeric for (var i = 0; i < data.length; ++i) { var value = data[i].data; // If the data is an array, we'll assume that it's a standard // Flot x-y pair, and are concerned only with the second value. // Note how we use the original array, rather than creating a // new one; this is more efficient and preserves any extra data // that the user may have stored in higher indexes. if ($.isArray(value) && value.length == 1) { value = value[0]; } if ($.isArray(value)) { // Equivalent to $.isNumeric() but compatible with jQuery < 1.7 if (!isNaN(parseFloat(value[1])) && isFinite(value[1])) { value[1] = +value[1]; } else { value[1] = 0; } } else if (!isNaN(parseFloat(value)) && isFinite(value)) { value = [1, +value]; } else { value = [1, 0]; } data[i].data = [value]; } // Sum up all the slices, so we can calculate percentages for each for (var i = 0; i < data.length; ++i) { total += data[i].data[0][1]; } // Count the number of slices with percentages below the combine // threshold; if it turns out to be just one, we won't combine. for (var i = 0; i < data.length; ++i) { var value = data[i].data[0][1]; if (value / total <= options.series.pie.combine.threshold) { combined += value; numCombined++; if (!color) { color = data[i].color; } } } for (var i = 0; i < data.length; ++i) { var value = data[i].data[0][1]; if (numCombined < 2 || value / total > options.series.pie.combine.threshold) { newdata.push( $.extend(data[i], { /* extend to allow keeping all other original data values and using them e.g. in labelFormatter. */ data: [[1, value]], color: data[i].color, label: data[i].label, angle: value * Math.PI * 2 / total, percent: value / (total / 100) }) ); } } if (numCombined > 1) { newdata.push({ data: [[1, combined]], color: color, label: options.series.pie.combine.label, angle: combined * Math.PI * 2 / total, percent: combined / (total / 100) }); } return newdata; } function draw(plot, newCtx) { if (!target) { return; // if no series were passed } var canvasWidth = plot.getPlaceholder().width(), canvasHeight = plot.getPlaceholder().height(), legendWidth = target.children().filter(".legend").children().width() || 0; ctx = newCtx; // WARNING: HACK! REWRITE THIS CODE AS SOON AS POSSIBLE! // When combining smaller slices into an 'other' slice, we need to // add a new series. Since Flot gives plugins no way to modify the // list of series, the pie plugin uses a hack where the first call // to processDatapoints results in a call to setData with the new // list of series, then subsequent processDatapoints do nothing. // The plugin-global 'processed' flag is used to control this hack; // it starts out false, and is set to true after the first call to // processDatapoints. // Unfortunately this turns future setData calls into no-ops; they // call processDatapoints, the flag is true, and nothing happens. // To fix this we'll set the flag back to false here in draw, when // all series have been processed, so the next sequence of calls to // processDatapoints once again starts out with a slice-combine. // This is really a hack; in 0.9 we need to give plugins a proper // way to modify series before any processing begins. processed = false; // calculate maximum radius and center point maxRadius = Math.min(canvasWidth, canvasHeight / options.series.pie.tilt) / 2; centerTop = canvasHeight / 2 + options.series.pie.offset.top; centerLeft = canvasWidth / 2; if (options.series.pie.offset.left == "auto") { if (options.legend.position.match("w")) { centerLeft += legendWidth / 2; } else { centerLeft -= legendWidth / 2; } if (centerLeft < maxRadius) { centerLeft = maxRadius; } else if (centerLeft > canvasWidth - maxRadius) { centerLeft = canvasWidth - maxRadius; } } else { centerLeft += options.series.pie.offset.left; } var slices = plot.getData(), attempts = 0; // Keep shrinking the pie's radius until drawPie returns true, // indicating that all the labels fit, or we try too many times. do { if (attempts > 0) { maxRadius *= REDRAW_SHRINK; } attempts += 1; clear(); if (options.series.pie.tilt <= 0.8) { drawShadow(); } } while (!drawPie() && attempts < REDRAW_ATTEMPTS) if (attempts >= REDRAW_ATTEMPTS) { clear(); target.prepend("
Could not draw pie with labels contained inside canvas
"); } if (plot.setSeries && plot.insertLegend) { plot.setSeries(slices); plot.insertLegend(); } // we're actually done at this point, just defining internal functions at this point function clear() { ctx.clearRect(0, 0, canvasWidth, canvasHeight); target.children().filter(".pieLabel, .pieLabelBackground").remove(); } function drawShadow() { var shadowLeft = options.series.pie.shadow.left; var shadowTop = options.series.pie.shadow.top; var edge = 10; var alpha = options.series.pie.shadow.alpha; var radius = options.series.pie.radius > 1 ? options.series.pie.radius : maxRadius * options.series.pie.radius; if (radius >= canvasWidth / 2 - shadowLeft || radius * options.series.pie.tilt >= canvasHeight / 2 - shadowTop || radius <= edge) { return; // shadow would be outside canvas, so don't draw it } ctx.save(); ctx.translate(shadowLeft,shadowTop); ctx.globalAlpha = alpha; ctx.fillStyle = "#000"; // center and rotate to starting position ctx.translate(centerLeft,centerTop); ctx.scale(1, options.series.pie.tilt); //radius -= edge; for (var i = 1; i <= edge; i++) { ctx.beginPath(); ctx.arc(0, 0, radius, 0, Math.PI * 2, false); ctx.fill(); radius -= i; } ctx.restore(); } function drawPie() { var startAngle = Math.PI * options.series.pie.startAngle; var radius = options.series.pie.radius > 1 ? options.series.pie.radius : maxRadius * options.series.pie.radius; // center and rotate to starting position ctx.save(); ctx.translate(centerLeft,centerTop); ctx.scale(1, options.series.pie.tilt); //ctx.rotate(startAngle); // start at top; -- This doesn't work properly in Opera // draw slices ctx.save(); var currentAngle = startAngle; for (var i = 0; i < slices.length; ++i) { slices[i].startAngle = currentAngle; drawSlice(slices[i].angle, slices[i].color, true); } ctx.restore(); // draw slice outlines if (options.series.pie.stroke.width > 0) { ctx.save(); ctx.lineWidth = options.series.pie.stroke.width; currentAngle = startAngle; for (var i = 0; i < slices.length; ++i) { drawSlice(slices[i].angle, options.series.pie.stroke.color, false); } ctx.restore(); } // draw donut hole drawDonutHole(ctx); ctx.restore(); // Draw the labels, returning true if they fit within the plot if (options.series.pie.label.show) { return drawLabels(); } else return true; function drawSlice(angle, color, fill) { if (angle <= 0 || isNaN(angle)) { return; } if (fill) { ctx.fillStyle = color; } else { ctx.strokeStyle = color; ctx.lineJoin = "round"; } ctx.beginPath(); if (Math.abs(angle - Math.PI * 2) > 0.000000001) { ctx.moveTo(0, 0); // Center of the pie } //ctx.arc(0, 0, radius, 0, angle, false); // This doesn't work properly in Opera ctx.arc(0, 0, radius,currentAngle, currentAngle + angle / 2, false); ctx.arc(0, 0, radius,currentAngle + angle / 2, currentAngle + angle, false); ctx.closePath(); //ctx.rotate(angle); // This doesn't work properly in Opera currentAngle += angle; if (fill) { ctx.fill(); } else { ctx.stroke(); } } function drawLabels() { var currentAngle = startAngle; var radius = options.series.pie.label.radius > 1 ? options.series.pie.label.radius : maxRadius * options.series.pie.label.radius; for (var i = 0; i < slices.length; ++i) { if (slices[i].percent >= options.series.pie.label.threshold * 100) { if (!drawLabel(slices[i], currentAngle, i)) { return false; } } currentAngle += slices[i].angle; } return true; function drawLabel(slice, startAngle, index) { if (slice.data[0][1] == 0) { return true; } // format label text var lf = options.legend.labelFormatter, text, plf = options.series.pie.label.formatter; if (lf) { text = lf(slice.label, slice); } else { text = slice.label; } if (plf) { text = plf(text, slice); } var halfAngle = ((startAngle + slice.angle) + startAngle) / 2; var x = centerLeft + Math.round(Math.cos(halfAngle) * radius); var y = centerTop + Math.round(Math.sin(halfAngle) * radius) * options.series.pie.tilt; var html = "" + text + ""; target.append(html); var label = target.children("#pieLabel" + index); var labelTop = (y - label.height() / 2); var labelLeft = (x - label.width() / 2); label.css("top", labelTop); label.css("left", labelLeft); // check to make sure that the label is not outside the canvas if (0 - labelTop > 0 || 0 - labelLeft > 0 || canvasHeight - (labelTop + label.height()) < 0 || canvasWidth - (labelLeft + label.width()) < 0) { return false; } if (options.series.pie.label.background.opacity != 0) { // put in the transparent background separately to avoid blended labels and label boxes var c = options.series.pie.label.background.color; if (c == null) { c = slice.color; } var pos = "top:" + labelTop + "px;left:" + labelLeft + "px;"; $("
") .css("opacity", options.series.pie.label.background.opacity) .insertBefore(label); } return true; } // end individual label function } // end drawLabels function } // end drawPie function } // end draw function // Placed here because it needs to be accessed from multiple locations function drawDonutHole(layer) { if (options.series.pie.innerRadius > 0) { // subtract the center layer.save(); var innerRadius = options.series.pie.innerRadius > 1 ? options.series.pie.innerRadius : maxRadius * options.series.pie.innerRadius; layer.globalCompositeOperation = "destination-out"; // this does not work with excanvas, but it will fall back to using the stroke color layer.beginPath(); layer.fillStyle = options.series.pie.stroke.color; layer.arc(0, 0, innerRadius, 0, Math.PI * 2, false); layer.fill(); layer.closePath(); layer.restore(); // add inner stroke layer.save(); layer.beginPath(); layer.strokeStyle = options.series.pie.stroke.color; layer.arc(0, 0, innerRadius, 0, Math.PI * 2, false); layer.stroke(); layer.closePath(); layer.restore(); // TODO: add extra shadow inside hole (with a mask) if the pie is tilted. } } //-- Additional Interactive related functions -- function isPointInPoly(poly, pt) { for(var c = false, i = -1, l = poly.length, j = l - 1; ++i < l; j = i) ((poly[i][1] <= pt[1] && pt[1] < poly[j][1]) || (poly[j][1] <= pt[1] && pt[1]< poly[i][1])) && (pt[0] < (poly[j][0] - poly[i][0]) * (pt[1] - poly[i][1]) / (poly[j][1] - poly[i][1]) + poly[i][0]) && (c = !c); return c; } function findNearbySlice(mouseX, mouseY) { var slices = plot.getData(), options = plot.getOptions(), radius = options.series.pie.radius > 1 ? options.series.pie.radius : maxRadius * options.series.pie.radius, x, y; for (var i = 0; i < slices.length; ++i) { var s = slices[i]; if (s.pie.show) { ctx.save(); ctx.beginPath(); ctx.moveTo(0, 0); // Center of the pie //ctx.scale(1, options.series.pie.tilt); // this actually seems to break everything when here. ctx.arc(0, 0, radius, s.startAngle, s.startAngle + s.angle / 2, false); ctx.arc(0, 0, radius, s.startAngle + s.angle / 2, s.startAngle + s.angle, false); ctx.closePath(); x = mouseX - centerLeft; y = mouseY - centerTop; if (ctx.isPointInPath) { if (ctx.isPointInPath(mouseX - centerLeft, mouseY - centerTop)) { ctx.restore(); return { datapoint: [s.percent, s.data], dataIndex: 0, series: s, seriesIndex: i }; } } else { // excanvas for IE doesn;t support isPointInPath, this is a workaround. var p1X = radius * Math.cos(s.startAngle), p1Y = radius * Math.sin(s.startAngle), p2X = radius * Math.cos(s.startAngle + s.angle / 4), p2Y = radius * Math.sin(s.startAngle + s.angle / 4), p3X = radius * Math.cos(s.startAngle + s.angle / 2), p3Y = radius * Math.sin(s.startAngle + s.angle / 2), p4X = radius * Math.cos(s.startAngle + s.angle / 1.5), p4Y = radius * Math.sin(s.startAngle + s.angle / 1.5), p5X = radius * Math.cos(s.startAngle + s.angle), p5Y = radius * Math.sin(s.startAngle + s.angle), arrPoly = [[0, 0], [p1X, p1Y], [p2X, p2Y], [p3X, p3Y], [p4X, p4Y], [p5X, p5Y]], arrPoint = [x, y]; // TODO: perhaps do some mathmatical trickery here with the Y-coordinate to compensate for pie tilt? if (isPointInPoly(arrPoly, arrPoint)) { ctx.restore(); return { datapoint: [s.percent, s.data], dataIndex: 0, series: s, seriesIndex: i }; } } ctx.restore(); } } return null; } function onMouseMove(e) { triggerClickHoverEvent("plothover", e); } function onClick(e) { triggerClickHoverEvent("plotclick", e); } // trigger click or hover event (they send the same parameters so we share their code) function triggerClickHoverEvent(eventname, e) { var offset = plot.offset(); var canvasX = parseInt(e.pageX - offset.left); var canvasY = parseInt(e.pageY - offset.top); var item = findNearbySlice(canvasX, canvasY); 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)) { unhighlight(h.series); } } } // highlight the slice if (item) { highlight(item.series, eventname); } // trigger any hover bind events var pos = { pageX: e.pageX, pageY: e.pageY }; target.trigger(eventname, [pos, item]); } function highlight(s, auto) { //if (typeof s == "number") { // s = series[s]; //} var i = indexOfHighlight(s); if (i == -1) { highlights.push({ series: s, auto: auto }); plot.triggerRedrawOverlay(); } else if (!auto) { highlights[i].auto = false; } } function unhighlight(s) { if (s == null) { highlights = []; plot.triggerRedrawOverlay(); } //if (typeof s == "number") { // s = series[s]; //} var i = indexOfHighlight(s); if (i != -1) { highlights.splice(i, 1); plot.triggerRedrawOverlay(); } } function indexOfHighlight(s) { for (var i = 0; i < highlights.length; ++i) { var h = highlights[i]; if (h.series == s) return i; } return -1; } function drawOverlay(plot, octx) { var options = plot.getOptions(); var radius = options.series.pie.radius > 1 ? options.series.pie.radius : maxRadius * options.series.pie.radius; octx.save(); octx.translate(centerLeft, centerTop); octx.scale(1, options.series.pie.tilt); for (var i = 0; i < highlights.length; ++i) { drawHighlight(highlights[i].series); } drawDonutHole(octx); octx.restore(); function drawHighlight(series) { if (series.angle <= 0 || isNaN(series.angle)) { return; } //octx.fillStyle = parseColor(options.series.pie.highlight.color).scale(null, null, null, options.series.pie.highlight.opacity).toString(); octx.fillStyle = "rgba(255, 255, 255, " + options.series.pie.highlight.opacity + ")"; // this is temporary until we have access to parseColor octx.beginPath(); if (Math.abs(series.angle - Math.PI * 2) > 0.000000001) { octx.moveTo(0, 0); // Center of the pie } octx.arc(0, 0, radius, series.startAngle, series.startAngle + series.angle / 2, false); octx.arc(0, 0, radius, series.startAngle + series.angle / 2, series.startAngle + series.angle, false); octx.closePath(); octx.fill(); } } } // end init (plugin body) // define pie specific options and their default values var options = { series: { pie: { show: false, radius: "auto", // actual radius of the visible pie (based on full calculated radius if <=1, or hard pixel value) innerRadius: 0, /* for donut */ startAngle: 3/2, tilt: 1, shadow: { left: 5, // shadow left offset top: 15, // shadow top offset alpha: 0.02 // shadow alpha }, offset: { top: 0, left: "auto" }, stroke: { color: "#fff", width: 1 }, label: { show: "auto", formatter: function(label, slice) { return "
" + label + "
" + Math.round(slice.percent) + "%
"; }, // formatter function radius: 1, // radius at which to place the labels (based on full calculated radius if <=1, or hard pixel value) background: { color: null, opacity: 0 }, threshold: 0 // percentage at which to hide the label (i.e. the slice is too narrow) }, combine: { threshold: -1, // percentage at which to combine little slices into one larger slice color: null, // color to give the new slice (auto-generated if null) label: "Other" // label to give the new slice }, highlight: { //color: "#fff", // will add this functionality once parseColor is available opacity: 0.5 } } } }; $.plot.plugins.push({ init: init, options: options, name: "pie", version: "1.1" }); })(jQuery); /* Flot plugin for automatically redrawing plots as the placeholder resizes. Copyright (c) 2007-2014 IOLA and Ole Laursen. Licensed under the MIT license. It works by listening for changes on the placeholder div (through the jQuery resize event plugin) - if the size changes, it will redraw the plot. There are no options. If you need to disable the plugin for some plots, you can just fix the size of their placeholders. */ /* Inline dependency: * jQuery resize event - v1.1 - 3/14/2010 * http://benalman.com/projects/jquery-resize-plugin/ * * Copyright (c) 2010 "Cowboy" Ben Alman * Dual licensed under the MIT and GPL licenses. * http://benalman.com/about/license/ */ (function($,e,t){"$:nomunge";var i=[],n=$.resize=$.extend($.resize,{}),a,r=false,s="setTimeout",u="resize",m=u+"-special-event",o="pendingDelay",l="activeDelay",f="throttleWindow";n[o]=200;n[l]=20;n[f]=true;$.event.special[u]={setup:function(){if(!n[f]&&this[s]){return false}var e=$(this);i.push(this);e.data(m,{w:e.width(),h:e.height()});if(i.length===1){a=t;h()}},teardown:function(){if(!n[f]&&this[s]){return false}var e=$(this);for(var t=i.length-1;t>=0;t--){if(i[t]==this){i.splice(t,1);break}}e.removeData(m);if(!i.length){if(r){cancelAnimationFrame(a)}else{clearTimeout(a)}a=null}},add:function(e){if(!n[f]&&this[s]){return false}var i;function a(e,n,a){var r=$(this),s=r.data(m)||{};s.w=n!==t?n:r.width();s.h=a!==t?a:r.height();i.apply(this,arguments)}if($.isFunction(e)){i=e;return a}else{i=e.handler;e.handler=a}}};function h(t){if(r===true){r=t||1}for(var s=i.length-1;s>=0;s--){var l=$(i[s]);if(l[0]==e||l.is(":visible")){var f=l.width(),c=l.height(),d=l.data(m);if(d&&(f!==d.w||c!==d.h)){l.trigger(u,[d.w=f,d.h=c]);r=t||true}}else{d=l.data(m);d.w=0;d.h=0}}if(a!==null){if(r&&(t==null||t-r<1e3)){a=e.requestAnimationFrame(h)}else{a=setTimeout(h,n[o]);r=false}}}if(!e.requestAnimationFrame){e.requestAnimationFrame=function(){return e.webkitRequestAnimationFrame||e.mozRequestAnimationFrame||e.oRequestAnimationFrame||e.msRequestAnimationFrame||function(t,i){return e.setTimeout(function(){t((new Date).getTime())},n[l])}}()}if(!e.cancelAnimationFrame){e.cancelAnimationFrame=function(){return e.webkitCancelRequestAnimationFrame||e.mozCancelRequestAnimationFrame||e.oCancelRequestAnimationFrame||e.msCancelRequestAnimationFrame||clearTimeout}()}})(jQuery,this); (function ($) { var options = { }; // no options function init(plot) { function onResize() { var placeholder = plot.getPlaceholder(); // somebody might have hidden us and we can't plot // when we don't have the dimensions if (placeholder.width() == 0 || placeholder.height() == 0) return; plot.resize(); plot.setupGrid(); plot.draw(); } function bindEvents(plot, eventHolder) { plot.getPlaceholder().resize(onResize); } function shutdown(plot, eventHolder) { plot.getPlaceholder().unbind("resize", onResize); } plot.hooks.bindEvents.push(bindEvents); plot.hooks.shutdown.push(shutdown); } $.plot.plugins.push({ init: init, options: options, name: 'resize', version: '1.0' }); })(jQuery); /* Flot plugin for selecting regions of a plot. Copyright (c) 2007-2014 IOLA and Ole Laursen. Licensed under the MIT license. The plugin supports these options: selection: { mode: null or "x" or "y" or "xy", color: color, shape: "round" or "miter" or "bevel", minSize: number of pixels } Selection support is enabled by setting the mode to one of "x", "y" or "xy". In "x" mode, the user will only be able to specify the x range, similarly for "y" mode. For "xy", the selection becomes a rectangle where both ranges can be specified. "color" is color of the selection (if you need to change the color later on, you can get to it with plot.getOptions().selection.color). "shape" is the shape of the corners of the selection. "minSize" is the minimum size a selection can be in pixels. This value can be customized to determine the smallest size a selection can be and still have the selection rectangle be displayed. When customizing this value, the fact that it refers to pixels, not axis units must be taken into account. Thus, for example, if there is a bar graph in time mode with BarWidth set to 1 minute, setting "minSize" to 1 will not make the minimum selection size 1 minute, but rather 1 pixel. Note also that setting "minSize" to 0 will prevent "plotunselected" events from being fired when the user clicks the mouse without dragging. When selection support is enabled, a "plotselected" event will be emitted on the DOM element you passed into the plot function. The event handler gets a parameter with the ranges selected on the axes, like this: placeholder.bind( "plotselected", function( event, ranges ) { alert("You selected " + ranges.xaxis.from + " to " + ranges.xaxis.to) // similar for yaxis - with multiple axes, the extra ones are in // x2axis, x3axis, ... }); The "plotselected" event is only fired when the user has finished making the selection. A "plotselecting" event is fired during the process with the same parameters as the "plotselected" event, in case you want to know what's happening while it's happening, A "plotunselected" event with no arguments is emitted when the user clicks the mouse to remove the selection. As stated above, setting "minSize" to 0 will destroy this behavior. The plugin allso adds the following methods to the plot object: - setSelection( ranges, preventEvent ) Set the selection rectangle. The passed in ranges is on the same form as returned in the "plotselected" event. If the selection mode is "x", you should put in either an xaxis range, if the mode is "y" you need to put in an yaxis range and both xaxis and yaxis if the selection mode is "xy", like this: setSelection({ xaxis: { from: 0, to: 10 }, yaxis: { from: 40, to: 60 } }); setSelection will trigger the "plotselected" event when called. If you don't want that to happen, e.g. if you're inside a "plotselected" handler, pass true as the second parameter. If you are using multiple axes, you can specify the ranges on any of those, e.g. as x2axis/x3axis/... instead of xaxis, the plugin picks the first one it sees. - clearSelection( preventEvent ) Clear the selection rectangle. Pass in true to avoid getting a "plotunselected" event. - getSelection() Returns the current selection in the same format as the "plotselected" event. If there's currently no selection, the function returns null. */ (function ($) { function init(plot) { var selection = { first: { x: -1, y: -1}, second: { x: -1, y: -1}, show: false, active: false }; // FIXME: The drag handling implemented here should be // abstracted out, there's some similar code from a library in // the navigation plugin, this should be massaged a bit to fit // the Flot cases here better and reused. Doing this would // make this plugin much slimmer. var savedhandlers = {}; var mouseUpHandler = null; function onMouseMove(e) { if (selection.active) { updateSelection(e); plot.getPlaceholder().trigger("plotselecting", [ getSelection() ]); } } function onMouseDown(e) { if (e.which != 1) // only accept left-click return; // cancel out any text selections document.body.focus(); // prevent text selection and drag in old-school browsers if (document.onselectstart !== undefined && savedhandlers.onselectstart == null) { savedhandlers.onselectstart = document.onselectstart; document.onselectstart = function () { return false; }; } if (document.ondrag !== undefined && savedhandlers.ondrag == null) { savedhandlers.ondrag = document.ondrag; document.ondrag = function () { return false; }; } setSelectionPos(selection.first, e); selection.active = true; // this is a bit silly, but we have to use a closure to be // able to whack the same handler again mouseUpHandler = function (e) { onMouseUp(e); }; $(document).one("mouseup", mouseUpHandler); } function onMouseUp(e) { mouseUpHandler = null; // revert drag stuff for old-school browsers if (document.onselectstart !== undefined) document.onselectstart = savedhandlers.onselectstart; if (document.ondrag !== undefined) document.ondrag = savedhandlers.ondrag; // no more dragging selection.active = false; updateSelection(e); if (selectionIsSane()) triggerSelectedEvent(); else { // this counts as a clear plot.getPlaceholder().trigger("plotunselected", [ ]); plot.getPlaceholder().trigger("plotselecting", [ null ]); } return false; } function getSelection() { if (!selectionIsSane()) return null; if (!selection.show) return null; var r = {}, c1 = selection.first, c2 = selection.second; $.each(plot.getAxes(), function (name, axis) { if (axis.used) { var p1 = axis.c2p(c1[axis.direction]), p2 = axis.c2p(c2[axis.direction]); r[name] = { from: Math.min(p1, p2), to: Math.max(p1, p2) }; } }); return r; } function triggerSelectedEvent() { var r = getSelection(); plot.getPlaceholder().trigger("plotselected", [ r ]); // backwards-compat stuff, to be removed in future if (r.xaxis && r.yaxis) plot.getPlaceholder().trigger("selected", [ { x1: r.xaxis.from, y1: r.yaxis.from, x2: r.xaxis.to, y2: r.yaxis.to } ]); } function clamp(min, value, max) { return value < min ? min: (value > max ? max: value); } function setSelectionPos(pos, e) { var o = plot.getOptions(); var offset = plot.getPlaceholder().offset(); var plotOffset = plot.getPlotOffset(); pos.x = clamp(0, e.pageX - offset.left - plotOffset.left, plot.width()); pos.y = clamp(0, e.pageY - offset.top - plotOffset.top, plot.height()); if (o.selection.mode == "y") pos.x = pos == selection.first ? 0 : plot.width(); if (o.selection.mode == "x") pos.y = pos == selection.first ? 0 : plot.height(); } function updateSelection(pos) { if (pos.pageX == null) return; setSelectionPos(selection.second, pos); if (selectionIsSane()) { selection.show = true; plot.triggerRedrawOverlay(); } else clearSelection(true); } function clearSelection(preventEvent) { if (selection.show) { selection.show = false; plot.triggerRedrawOverlay(); if (!preventEvent) plot.getPlaceholder().trigger("plotunselected", [ ]); } } // function taken from markings support in Flot function extractRange(ranges, coord) { var axis, from, to, key, axes = plot.getAxes(); for (var k in axes) { axis = axes[k]; 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" ? plot.getXAxes()[0] : plot.getYAxes()[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 setSelection(ranges, preventEvent) { var axis, range, o = plot.getOptions(); if (o.selection.mode == "y") { selection.first.x = 0; selection.second.x = plot.width(); } else { range = extractRange(ranges, "x"); selection.first.x = range.axis.p2c(range.from); selection.second.x = range.axis.p2c(range.to); } if (o.selection.mode == "x") { selection.first.y = 0; selection.second.y = plot.height(); } else { range = extractRange(ranges, "y"); selection.first.y = range.axis.p2c(range.from); selection.second.y = range.axis.p2c(range.to); } selection.show = true; plot.triggerRedrawOverlay(); if (!preventEvent && selectionIsSane()) triggerSelectedEvent(); } function selectionIsSane() { var minSize = plot.getOptions().selection.minSize; return Math.abs(selection.second.x - selection.first.x) >= minSize && Math.abs(selection.second.y - selection.first.y) >= minSize; } plot.clearSelection = clearSelection; plot.setSelection = setSelection; plot.getSelection = getSelection; plot.hooks.bindEvents.push(function(plot, eventHolder) { var o = plot.getOptions(); if (o.selection.mode != null) { eventHolder.mousemove(onMouseMove); eventHolder.mousedown(onMouseDown); } }); plot.hooks.drawOverlay.push(function (plot, ctx) { // draw selection if (selection.show && selectionIsSane()) { var plotOffset = plot.getPlotOffset(); var o = plot.getOptions(); ctx.save(); ctx.translate(plotOffset.left, plotOffset.top); var c = $.color.parse(o.selection.color); ctx.strokeStyle = c.scale('a', 0.8).toString(); ctx.lineWidth = 1; ctx.lineJoin = o.selection.shape; ctx.fillStyle = c.scale('a', 0.4).toString(); var x = Math.min(selection.first.x, selection.second.x) + 0.5, y = Math.min(selection.first.y, selection.second.y) + 0.5, w = Math.abs(selection.second.x - selection.first.x) - 1, h = Math.abs(selection.second.y - selection.first.y) - 1; ctx.fillRect(x, y, w, h); ctx.strokeRect(x, y, w, h); ctx.restore(); } }); plot.hooks.shutdown.push(function (plot, eventHolder) { eventHolder.unbind("mousemove", onMouseMove); eventHolder.unbind("mousedown", onMouseDown); if (mouseUpHandler) $(document).unbind("mouseup", mouseUpHandler); }); } $.plot.plugins.push({ init: init, options: { selection: { mode: null, // one of null, "x", "y" or "xy" color: "#e8cfac", shape: "round", // one of "round", "miter", or "bevel" minSize: 5 // minimum number of pixels } }, name: 'selection', version: '1.1' }); })(jQuery); /* Flot plugin for stacking data sets rather than overlyaing them. Copyright (c) 2007-2014 IOLA and Ole Laursen. Licensed under the MIT license. The plugin assumes the data is sorted on x (or y if stacking horizontally). For line charts, it is assumed that if a line has an undefined gap (from a null point), then the line above it should have the same gap - insert zeros instead of "null" if you want another behaviour. This also holds for the start and end of the chart. Note that stacking a mix of positive and negative values in most instances doesn't make sense (so it looks weird). Two or more series are stacked when their "stack" attribute is set to the same key (which can be any number or string or just "true"). To specify the default stack, you can set the stack option like this: series: { stack: null/false, true, or a key (number/string) } You can also specify it for a single series, like this: $.plot( $("#placeholder"), [{ data: [ ... ], stack: true }]) The stacking order is determined by the order of the data series in the array (later series end up on top of the previous). Internally, the plugin modifies the datapoints in each series, adding an offset to the y value. For line series, extra data points are inserted through interpolation. If there's a second y value, it's also adjusted (e.g for bar charts or filled areas). */ (function ($) { var options = { series: { stack: null } // or number/string }; function init(plot) { function findMatchingSeries(s, allseries) { var res = null; for (var i = 0; i < allseries.length; ++i) { if (s == allseries[i]) break; if (allseries[i].stack == s.stack) res = allseries[i]; } return res; } function stackData(plot, s, datapoints) { if (s.stack == null || s.stack === false) return; var other = findMatchingSeries(s, plot.getData()); if (!other) return; var ps = datapoints.pointsize, points = datapoints.points, otherps = other.datapoints.pointsize, otherpoints = other.datapoints.points, newpoints = [], px, py, intery, qx, qy, bottom, withlines = s.lines.show, horizontal = s.bars.horizontal, withbottom = ps > 2 && (horizontal ? datapoints.format[2].x : datapoints.format[2].y), withsteps = withlines && s.lines.steps, fromgap = true, keyOffset = horizontal ? 1 : 0, accumulateOffset = horizontal ? 0 : 1, i = 0, j = 0, l, m; while (true) { if (i >= points.length) break; l = newpoints.length; if (points[i] == null) { // copy gaps for (m = 0; m < ps; ++m) newpoints.push(points[i + m]); i += ps; } else if (j >= otherpoints.length) { // for lines, we can't use the rest of the points if (!withlines) { for (m = 0; m < ps; ++m) newpoints.push(points[i + m]); } i += ps; } else if (otherpoints[j] == null) { // oops, got a gap for (m = 0; m < ps; ++m) newpoints.push(null); fromgap = true; j += otherps; } else { // cases where we actually got two points px = points[i + keyOffset]; py = points[i + accumulateOffset]; qx = otherpoints[j + keyOffset]; qy = otherpoints[j + accumulateOffset]; bottom = 0; if (px == qx) { for (m = 0; m < ps; ++m) newpoints.push(points[i + m]); newpoints[l + accumulateOffset] += qy; bottom = qy; i += ps; j += otherps; } else if (px > qx) { // we got past point below, might need to // insert interpolated extra point if (withlines && i > 0 && points[i - ps] != null) { intery = py + (points[i - ps + accumulateOffset] - py) * (qx - px) / (points[i - ps + keyOffset] - px); newpoints.push(qx); newpoints.push(intery + qy); for (m = 2; m < ps; ++m) newpoints.push(points[i + m]); bottom = qy; } j += otherps; } else { // px < qx if (fromgap && withlines) { // if we come from a gap, we just skip this point i += ps; continue; } for (m = 0; m < ps; ++m) newpoints.push(points[i + m]); // we might be able to interpolate a point below, // this can give us a better y if (withlines && j > 0 && otherpoints[j - otherps] != null) bottom = qy + (otherpoints[j - otherps + accumulateOffset] - qy) * (px - qx) / (otherpoints[j - otherps + keyOffset] - qx); newpoints[l + accumulateOffset] += bottom; i += ps; } fromgap = false; if (l != newpoints.length && withbottom) newpoints[l + 2] += bottom; } // maintain the line steps invariant if (withsteps && l != newpoints.length && l > 0 && newpoints[l] != null && newpoints[l] != newpoints[l - ps] && newpoints[l + 1] != newpoints[l - ps + 1]) { for (m = 0; m < ps; ++m) newpoints[l + ps + m] = newpoints[l + m]; newpoints[l + 1] = newpoints[l - ps + 1]; } } datapoints.points = newpoints; } plot.hooks.processDatapoints.push(stackData); } $.plot.plugins.push({ init: init, options: options, name: 'stack', version: '1.2' }); })(jQuery); /** * Flot plugin that provides spline interpolation for line graphs * author: Alex Bardas < alex.bardas@gmail.com > * modified by: Avi Kohn https://github.com/AMKohn * based on the spline interpolation described at: * http://scaledinnovation.com/analytics/splines/aboutSplines.html * * Example usage: (add in plot options series object) * for linespline: * series: { * ... * lines: { * show: false * }, * splines: { * show: true, * tension: x, (float between 0 and 1, defaults to 0.5), * lineWidth: y (number, defaults to 2), * fill: z (float between 0 .. 1 or false, as in flot documentation) * }, * ... * } * areaspline: * series: { * ... * lines: { * show: true, * lineWidth: 0, (line drawing will not execute) * fill: x, (float between 0 .. 1, as in flot documentation) * ... * }, * splines: { * show: true, * tension: 0.5 (float between 0 and 1) * }, * ... * } * */ (function($) { 'use strict' /** * @param {Number} x0, y0, x1, y1: coordinates of the end (knot) points of the segment * @param {Number} x2, y2: the next knot (not connected, but needed to calculate p2) * @param {Number} tension: control how far the control points spread * @return {Array}: p1 -> control point, from x1 back toward x0 * p2 -> the next control point, returned to become the next segment's p1 * * @api private */ function getControlPoints(x0, y0, x1, y1, x2, y2, tension) { var pow = Math.pow, sqrt = Math.sqrt, d01, d12, fa, fb, p1x, p1y, p2x, p2y; // Scaling factors: distances from this knot to the previous and following knots. d01 = sqrt(pow(x1 - x0, 2) + pow(y1 - y0, 2)); d12 = sqrt(pow(x2 - x1, 2) + pow(y2 - y1, 2)); fa = tension * d01 / (d01 + d12); fb = tension - fa; p1x = x1 + fa * (x0 - x2); p1y = y1 + fa * (y0 - y2); p2x = x1 - fb * (x0 - x2); p2y = y1 - fb * (y0 - y2); return [p1x, p1y, p2x, p2y]; } var line = []; function drawLine(points, ctx, height, fill, seriesColor) { var c = $.color.parse(seriesColor); c.a = typeof fill == "number" ? fill : .3; c.normalize(); c = c.toString(); ctx.beginPath(); ctx.moveTo(points[0][0], points[0][1]); var plength = points.length; for (var i = 0; i < plength; i++) { ctx[points[i][3]].apply(ctx, points[i][2]); } ctx.stroke(); ctx.lineWidth = 0; ctx.lineTo(points[plength - 1][0], height); ctx.lineTo(points[0][0], height); ctx.closePath(); if (fill !== false) { ctx.fillStyle = c; ctx.fill(); } } /** * @param {Object} ctx: canvas context * @param {String} type: accepted strings: 'bezier' or 'quadratic' (defaults to quadratic) * @param {Array} points: 2 points for which to draw the interpolation * @param {Array} cpoints: control points for those segment points * * @api private */ function queue(ctx, type, points, cpoints) { if (type === void 0 || (type !== 'bezier' && type !== 'quadratic')) { type = 'quadratic'; } type = type + 'CurveTo'; if (line.length == 0) line.push([points[0], points[1], cpoints.concat(points.slice(2)), type]); else if (type == "quadraticCurveTo" && points.length == 2) { cpoints = cpoints.slice(0, 2).concat(points); line.push([points[0], points[1], cpoints, type]); } else line.push([points[2], points[3], cpoints.concat(points.slice(2)), type]); } /** * @param {Object} plot * @param {Object} ctx: canvas context * @param {Object} series * * @api private */ function drawSpline(plot, ctx, series) { // Not interested if spline is not requested if (series.splines.show !== true) { return; } var cp = [], // array of control points tension = series.splines.tension || 0.5, idx, x, y, points = series.datapoints.points, ps = series.datapoints.pointsize, plotOffset = plot.getPlotOffset(), len = points.length, pts = []; line = []; // Cannot display a linespline/areaspline if there are less than 3 points if (len / ps < 4) { $.extend(series.lines, series.splines); return; } for (idx = 0; idx < len; idx += ps) { x = points[idx]; y = points[idx + 1]; if (x == null || x < series.xaxis.min || x > series.xaxis.max || y < series.yaxis.min || y > series.yaxis.max) { continue; } pts.push(series.xaxis.p2c(x) + plotOffset.left, series.yaxis.p2c(y) + plotOffset.top); } len = pts.length; // Draw an open curve, not connected at the ends for (idx = 0; idx < len - 2; idx += 2) { cp = cp.concat(getControlPoints.apply(this, pts.slice(idx, idx + 6).concat([tension]))); } ctx.save(); ctx.strokeStyle = series.color; ctx.lineWidth = series.splines.lineWidth; queue(ctx, 'quadratic', pts.slice(0, 4), cp.slice(0, 2)); for (idx = 2; idx < len - 3; idx += 2) { queue(ctx, 'bezier', pts.slice(idx, idx + 4), cp.slice(2 * idx - 2, 2 * idx + 2)); } queue(ctx, 'quadratic', pts.slice(len - 2, len), [cp[2 * len - 10], cp[2 * len - 9], pts[len - 4], pts[len - 3]]); drawLine(line, ctx, plot.height() + 10, series.splines.fill, series.color); ctx.restore(); } $.plot.plugins.push({ init: function(plot) { plot.hooks.drawSeries.push(drawSpline); }, options: { series: { splines: { show: false, lineWidth: 2, tension: 0.5, fill: false } } }, name: 'spline', version: '0.8.2' }); })(jQuery); /* Flot plugin that adds some extra symbols for plotting points. Copyright (c) 2007-2014 IOLA and Ole Laursen. Licensed under the MIT license. The symbols are accessed as strings through the standard symbol options: series: { points: { symbol: "square" // or "diamond", "triangle", "cross" } } */ (function ($) { function processRawData(plot, series, datapoints) { // we normalize the area of each symbol so it is approximately the // same as a circle of the given radius var handlers = { square: function (ctx, x, y, radius, shadow) { // pi * r^2 = (2s)^2 => s = r * sqrt(pi)/2 var size = radius * Math.sqrt(Math.PI) / 2; ctx.rect(x - size, y - size, size + size, size + size); }, diamond: function (ctx, x, y, radius, shadow) { // pi * r^2 = 2s^2 => s = r * sqrt(pi/2) var size = radius * Math.sqrt(Math.PI / 2); ctx.moveTo(x - size, y); ctx.lineTo(x, y - size); ctx.lineTo(x + size, y); ctx.lineTo(x, y + size); ctx.lineTo(x - size, y); }, triangle: function (ctx, x, y, radius, shadow) { // pi * r^2 = 1/2 * s^2 * sin (pi / 3) => s = r * sqrt(2 * pi / sin(pi / 3)) var size = radius * Math.sqrt(2 * Math.PI / Math.sin(Math.PI / 3)); var height = size * Math.sin(Math.PI / 3); ctx.moveTo(x - size/2, y + height/2); ctx.lineTo(x + size/2, y + height/2); if (!shadow) { ctx.lineTo(x, y - height/2); ctx.lineTo(x - size/2, y + height/2); } }, cross: function (ctx, x, y, radius, shadow) { // pi * r^2 = (2s)^2 => s = r * sqrt(pi)/2 var size = radius * Math.sqrt(Math.PI) / 2; ctx.moveTo(x - size, y - size); ctx.lineTo(x + size, y + size); ctx.moveTo(x - size, y + size); ctx.lineTo(x + size, y - size); } }; var s = series.points.symbol; if (handlers[s]) series.points.symbol = handlers[s]; } function init(plot) { plot.hooks.processDatapoints.push(processRawData); } $.plot.plugins.push({ init: init, name: 'symbols', version: '1.0' }); })(jQuery); /* Flot plugin for thresholding data. Copyright (c) 2007-2014 IOLA and Ole Laursen. Licensed under the MIT license. The plugin supports these options: series: { threshold: { below: number color: colorspec } } It can also be applied to a single series, like this: $.plot( $("#placeholder"), [{ data: [ ... ], threshold: { ... } }]) An array can be passed for multiple thresholding, like this: threshold: [{ below: number1 color: color1 },{ below: number2 color: color2 }] These multiple threshold objects can be passed in any order since they are sorted by the processing function. The data points below "below" are drawn with the specified color. This makes it easy to mark points below 0, e.g. for budget data. Internally, the plugin works by splitting the data into two series, above and below the threshold. The extra series below the threshold will have its label cleared and the special "originSeries" attribute set to the original series. You may need to check for this in hover events. */ (function ($) { var options = { series: { threshold: null } // or { below: number, color: color spec} }; function init(plot) { function thresholdData(plot, s, datapoints, below, color) { var ps = datapoints.pointsize, i, x, y, p, prevp, thresholded = $.extend({}, s); // note: shallow copy thresholded.datapoints = { points: [], pointsize: ps, format: datapoints.format }; thresholded.label = null; thresholded.color = color; thresholded.threshold = null; thresholded.originSeries = s; thresholded.data = []; var origpoints = datapoints.points, addCrossingPoints = s.lines.show; var threspoints = []; var newpoints = []; var m; for (i = 0; i < origpoints.length; i += ps) { x = origpoints[i]; y = origpoints[i + 1]; prevp = p; if (y < below) p = threspoints; else p = newpoints; if (addCrossingPoints && prevp != p && x != null && i > 0 && origpoints[i - ps] != null) { var interx = x + (below - y) * (x - origpoints[i - ps]) / (y - origpoints[i - ps + 1]); prevp.push(interx); prevp.push(below); for (m = 2; m < ps; ++m) prevp.push(origpoints[i + m]); p.push(null); // start new segment p.push(null); for (m = 2; m < ps; ++m) p.push(origpoints[i + m]); p.push(interx); p.push(below); for (m = 2; m < ps; ++m) p.push(origpoints[i + m]); } p.push(x); p.push(y); for (m = 2; m < ps; ++m) p.push(origpoints[i + m]); } datapoints.points = newpoints; thresholded.datapoints.points = threspoints; if (thresholded.datapoints.points.length > 0) { var origIndex = $.inArray(s, plot.getData()); // Insert newly-generated series right after original one (to prevent it from becoming top-most) plot.getData().splice(origIndex + 1, 0, thresholded); } // FIXME: there are probably some edge cases left in bars } function processThresholds(plot, s, datapoints) { if (!s.threshold) return; if (s.threshold instanceof Array) { s.threshold.sort(function(a, b) { return a.below - b.below; }); $(s.threshold).each(function(i, th) { thresholdData(plot, s, datapoints, th.below, th.color); }); } else { thresholdData(plot, s, datapoints, s.threshold.below, s.threshold.color); } } plot.hooks.processDatapoints.push(processThresholds); } $.plot.plugins.push({ init: init, options: options, name: 'threshold', version: '1.2' }); })(jQuery); /* * jquery.flot.tooltip * * description: easy-to-use tooltips for Flot charts * version: 0.9.0 * authors: Krzysztof Urbas @krzysu [myviews.pl],Evan Steinkerchner @Roundaround * website: https://github.com/krzysu/flot.tooltip * * build on 2016-07-26 * released under MIT License, 2012 */ (function ($) { // plugin options, default values var defaultOptions = { tooltip: { show: false, cssClass: "flotTip", content: "%s | X: %x | Y: %y", // allowed templates are: // %s -> series label, // %c -> series color, // %lx -> x axis label (requires flot-axislabels plugin https://github.com/markrcote/flot-axislabels), // %ly -> y axis label (requires flot-axislabels plugin https://github.com/markrcote/flot-axislabels), // %x -> X value, // %y -> Y value, // %x.2 -> precision of X value, // %p -> percent // %n -> value (not percent) of pie chart xDateFormat: null, yDateFormat: null, monthNames: null, dayNames: null, shifts: { x: 10, y: 20 }, defaultTheme: true, snap: true, lines: false, clickTips: false, // callbacks onHover: function (flotItem, $tooltipEl) {}, $compat: false } }; // dummy default options object for legacy code (<0.8.5) - is deleted later defaultOptions.tooltipOpts = defaultOptions.tooltip; // object var FlotTooltip = function (plot) { // variables this.tipPosition = {x: 0, y: 0}; this.init(plot); }; // main plugin function FlotTooltip.prototype.init = function (plot) { var that = this; // detect other flot plugins var plotPluginsLength = $.plot.plugins.length; this.plotPlugins = []; if (plotPluginsLength) { for (var p = 0; p < plotPluginsLength; p++) { this.plotPlugins.push($.plot.plugins[p].name); } } plot.hooks.bindEvents.push(function (plot, eventHolder) { // get plot options that.plotOptions = plot.getOptions(); // for legacy (<0.8.5) implementations if (typeof(that.plotOptions.tooltip) === 'boolean') { that.plotOptions.tooltipOpts.show = that.plotOptions.tooltip; that.plotOptions.tooltip = that.plotOptions.tooltipOpts; delete that.plotOptions.tooltipOpts; } // if not enabled return if (that.plotOptions.tooltip.show === false || typeof that.plotOptions.tooltip.show === 'undefined') return; // shortcut to access tooltip options that.tooltipOptions = that.plotOptions.tooltip; if (that.tooltipOptions.$compat) { that.wfunc = 'width'; that.hfunc = 'height'; } else { that.wfunc = 'innerWidth'; that.hfunc = 'innerHeight'; } // create tooltip DOM element var $tip = that.getDomElement(); // bind event $( plot.getPlaceholder() ).bind("plothover", plothover); if (that.tooltipOptions.clickTips) { $( plot.getPlaceholder() ).bind("plotclick", plotclick); } that.clickmode = false; $(eventHolder).bind('mousemove', mouseMove); }); plot.hooks.shutdown.push(function (plot, eventHolder){ $(plot.getPlaceholder()).unbind("plothover", plothover); $(plot.getPlaceholder()).unbind("plotclick", plotclick); plot.removeTooltip(); $(eventHolder).unbind("mousemove", mouseMove); }); function mouseMove(e){ var pos = {}; pos.x = e.pageX; pos.y = e.pageY; plot.setTooltipPosition(pos); } /** * open the tooltip (if not already open) and freeze it on the current position till the next click */ function plotclick(event, pos, item) { if (! that.clickmode) { // it is the click activating the clicktip plothover(event, pos, item); if (that.getDomElement().is(":visible")) { $(plot.getPlaceholder()).unbind("plothover", plothover); that.clickmode = true; } } else { // it is the click deactivating the clicktip $( plot.getPlaceholder() ).bind("plothover", plothover); plot.hideTooltip(); that.clickmode = false; } } function plothover(event, pos, item) { // Simple distance formula. var lineDistance = function (p1x, p1y, p2x, p2y) { return Math.sqrt((p2x - p1x) * (p2x - p1x) + (p2y - p1y) * (p2y - p1y)); }; // Here is some voodoo magic for determining the distance to a line form a given point {x, y}. var dotLineLength = function (x, y, x0, y0, x1, y1, o) { if (o && !(o = function (x, y, x0, y0, x1, y1) { if (typeof x0 !== 'undefined') return { x: x0, y: y }; else if (typeof y0 !== 'undefined') return { x: x, y: y0 }; var left, tg = -1 / ((y1 - y0) / (x1 - x0)); return { x: left = (x1 * (x * tg - y + y0) + x0 * (x * -tg + y - y1)) / (tg * (x1 - x0) + y0 - y1), y: tg * left - tg * x + y }; } (x, y, x0, y0, x1, y1), o.x >= Math.min(x0, x1) && o.x <= Math.max(x0, x1) && o.y >= Math.min(y0, y1) && o.y <= Math.max(y0, y1)) ) { var l1 = lineDistance(x, y, x0, y0), l2 = lineDistance(x, y, x1, y1); return l1 > l2 ? l2 : l1; } else { var a = y0 - y1, b = x1 - x0, c = x0 * y1 - y0 * x1; return Math.abs(a * x + b * y + c) / Math.sqrt(a * a + b * b); } }; if (item) { plot.showTooltip(item, that.tooltipOptions.snap ? item : pos); } else if (that.plotOptions.series.lines.show && that.tooltipOptions.lines === true) { var maxDistance = that.plotOptions.grid.mouseActiveRadius; var closestTrace = { distance: maxDistance + 1 }; var ttPos = pos; $.each(plot.getData(), function (i, series) { var xBeforeIndex = 0, xAfterIndex = -1; // Our search here assumes our data is sorted via the x-axis. // TODO: Improve efficiency somehow - search smaller sets of data. for (var j = 1; j < series.data.length; j++) { if (series.data[j - 1][0] <= pos.x && series.data[j][0] >= pos.x) { xBeforeIndex = j - 1; xAfterIndex = j; } } if (xAfterIndex === -1) { plot.hideTooltip(); return; } var pointPrev = { x: series.data[xBeforeIndex][0], y: series.data[xBeforeIndex][1] }, pointNext = { x: series.data[xAfterIndex][0], y: series.data[xAfterIndex][1] }; var distToLine = dotLineLength(series.xaxis.p2c(pos.x), series.yaxis.p2c(pos.y), series.xaxis.p2c(pointPrev.x), series.yaxis.p2c(pointPrev.y), series.xaxis.p2c(pointNext.x), series.yaxis.p2c(pointNext.y), false); if (distToLine < closestTrace.distance) { var closestIndex = lineDistance(pointPrev.x, pointPrev.y, pos.x, pos.y) < lineDistance(pos.x, pos.y, pointNext.x, pointNext.y) ? xBeforeIndex : xAfterIndex; var pointSize = series.datapoints.pointsize; // Calculate the point on the line vertically closest to our cursor. var pointOnLine = [ pos.x, pointPrev.y + ((pointNext.y - pointPrev.y) * ((pos.x - pointPrev.x) / (pointNext.x - pointPrev.x))) ]; var item = { datapoint: pointOnLine, dataIndex: closestIndex, series: series, seriesIndex: i }; closestTrace = { distance: distToLine, item: item }; if (that.tooltipOptions.snap) { ttPos = { pageX: series.xaxis.p2c(pointOnLine[0]), pageY: series.yaxis.p2c(pointOnLine[1]) }; } } }); if (closestTrace.distance < maxDistance + 1) plot.showTooltip(closestTrace.item, ttPos); else plot.hideTooltip(); } else { plot.hideTooltip(); } } // Quick little function for setting the tooltip position. plot.setTooltipPosition = function (pos) { var $tip = that.getDomElement(); var totalTipWidth = $tip.outerWidth() + that.tooltipOptions.shifts.x; var totalTipHeight = $tip.outerHeight() + that.tooltipOptions.shifts.y; if ((pos.x - $(window).scrollLeft()) > ($(window)[that.wfunc]() - totalTipWidth)) { pos.x -= totalTipWidth; pos.x = Math.max(pos.x, 0); } if ((pos.y - $(window).scrollTop()) > ($(window)[that.hfunc]() - totalTipHeight)) { pos.y -= totalTipHeight; } /* The section applies the new positioning ONLY if pos.x and pos.y are numbers. If they are undefined or not a number, use the last known numerical position. This hack fixes a bug that kept pie charts from keeping their tooltip positioning. */ if (isNaN(pos.x)) { that.tipPosition.x = that.tipPosition.xPrev; } else { that.tipPosition.x = pos.x; that.tipPosition.xPrev = pos.x; } if (isNaN(pos.y)) { that.tipPosition.y = that.tipPosition.yPrev; } else { that.tipPosition.y = pos.y; that.tipPosition.yPrev = pos.y; } }; // Quick little function for showing the tooltip. plot.showTooltip = function (target, position, targetPosition) { var $tip = that.getDomElement(); // convert tooltip content template to real tipText var tipText = that.stringFormat(that.tooltipOptions.content, target); if (tipText === '') return; $tip.html(tipText); plot.setTooltipPosition({ x: that.tipPosition.x, y: that.tipPosition.y }); $tip.css({ left: that.tipPosition.x + that.tooltipOptions.shifts.x, top: that.tipPosition.y + that.tooltipOptions.shifts.y }).show(); // run callback if (typeof that.tooltipOptions.onHover === 'function') { that.tooltipOptions.onHover(target, $tip); } }; // Quick little function for hiding the tooltip. plot.hideTooltip = function () { that.getDomElement().hide().html(''); }; plot.removeTooltip = function() { that.getDomElement().remove(); }; }; /** * get or create tooltip DOM element * @return jQuery object */ FlotTooltip.prototype.getDomElement = function () { var $tip = $('
'); if (this.tooltipOptions && this.tooltipOptions.cssClass) { $tip = $('.' + this.tooltipOptions.cssClass); if( $tip.length === 0 ){ $tip = $('
').addClass(this.tooltipOptions.cssClass); $tip.appendTo('body').hide().css({position: 'absolute'}); if(this.tooltipOptions.defaultTheme) { $tip.css({ 'background': '#fff', 'z-index': '1040', 'padding': '0.4em 0.6em', 'border-radius': '0.5em', 'font-size': '0.8em', 'border': '1px solid #111', 'display': 'none', 'white-space': 'nowrap' }); } } } return $tip; }; /** * core function, create tooltip content * @param {string} content - template with tooltip content * @param {object} item - Flot item * @return {string} real tooltip content for current item */ FlotTooltip.prototype.stringFormat = function (content, item) { var percentPattern = /%p\.{0,1}(\d{0,})/; var seriesPattern = /%s/; var colorPattern = /%c/; var xLabelPattern = /%lx/; // requires flot-axislabels plugin https://github.com/markrcote/flot-axislabels, will be ignored if plugin isn't loaded var yLabelPattern = /%ly/; // requires flot-axislabels plugin https://github.com/markrcote/flot-axislabels, will be ignored if plugin isn't loaded var xPattern = /%x\.{0,1}(\d{0,})/; var yPattern = /%y\.{0,1}(\d{0,})/; var xPatternWithoutPrecision = "%x"; var yPatternWithoutPrecision = "%y"; var customTextPattern = "%ct"; var nPiePattern = "%n"; var x, y, customText, p, n; // for threshold plugin we need to read data from different place if (typeof item.series.threshold !== "undefined") { x = item.datapoint[0]; y = item.datapoint[1]; customText = item.datapoint[2]; } // for CurvedLines plugin we need to read data from different place else if (typeof item.series.curvedLines !== "undefined") { x = item.datapoint[0]; y = item.datapoint[1]; } else if (typeof item.series.lines !== "undefined" && item.series.lines.steps) { x = item.series.datapoints.points[item.dataIndex * 2]; y = item.series.datapoints.points[item.dataIndex * 2 + 1]; // TODO: where to find custom text in this variant? customText = ""; } else { x = item.series.data[item.dataIndex][0]; y = item.series.data[item.dataIndex][1]; customText = item.series.data[item.dataIndex][2]; } // I think this is only in case of threshold plugin if (item.series.label === null && item.series.originSeries) { item.series.label = item.series.originSeries.label; } // if it is a function callback get the content string if (typeof(content) === 'function') { content = content(item.series.label, x, y, item); } // the case where the passed content is equal to false if (typeof(content) === 'boolean' && !content) { return ''; } /* replacement of %ct and other multi-character templates must precede the replacement of single-character templates to avoid conflict between '%c' and '%ct' and similar substrings */ if (customText) { content = content.replace(customTextPattern, customText); } // percent match for pie charts and stacked percent if (typeof (item.series.percent) !== 'undefined') { p = item.series.percent; } else if (typeof (item.series.percents) !== 'undefined') { p = item.series.percents[item.dataIndex]; } if (typeof p === 'number') { content = this.adjustValPrecision(percentPattern, content, p); } // replace %n with number of items represented by slice in pie charts if (item.series.hasOwnProperty('pie')) { if (typeof item.series.data[0][1] !== 'undefined') { n = item.series.data[0][1]; } } if (typeof n === 'number') { content = content.replace(nPiePattern, n); } // series match if (typeof(item.series.label) !== 'undefined') { content = content.replace(seriesPattern, item.series.label); } else { //remove %s if label is undefined content = content.replace(seriesPattern, ""); } // color match if (typeof(item.series.color) !== 'undefined') { content = content.replace(colorPattern, item.series.color); } else { //remove %s if color is undefined content = content.replace(colorPattern, ""); } // x axis label match if (this.hasAxisLabel('xaxis', item)) { content = content.replace(xLabelPattern, item.series.xaxis.options.axisLabel); } else { //remove %lx if axis label is undefined or axislabels plugin not present content = content.replace(xLabelPattern, ""); } // y axis label match if (this.hasAxisLabel('yaxis', item)) { content = content.replace(yLabelPattern, item.series.yaxis.options.axisLabel); } else { //remove %ly if axis label is undefined or axislabels plugin not present content = content.replace(yLabelPattern, ""); } // time mode axes with custom dateFormat if (this.isTimeMode('xaxis', item) && this.isXDateFormat(item)) { content = content.replace(xPattern, this.timestampToDate(x, this.tooltipOptions.xDateFormat, item.series.xaxis.options)); } if (this.isTimeMode('yaxis', item) && this.isYDateFormat(item)) { content = content.replace(yPattern, this.timestampToDate(y, this.tooltipOptions.yDateFormat, item.series.yaxis.options)); } // set precision if defined if (typeof x === 'number') { content = this.adjustValPrecision(xPattern, content, x); } if (typeof y === 'number') { content = this.adjustValPrecision(yPattern, content, y); } // change x from number to given label, if given if (typeof item.series.xaxis.ticks !== 'undefined') { var ticks; if (this.hasRotatedXAxisTicks(item)) { // xaxis.ticks will be an empty array if tickRotor is being used, but the values are available in rotatedTicks ticks = 'rotatedTicks'; } else { ticks = 'ticks'; } // see https://github.com/krzysu/flot.tooltip/issues/65 var tickIndex = item.dataIndex + item.seriesIndex; for (var xIndex in item.series.xaxis[ticks]) { if (item.series.xaxis[ticks].hasOwnProperty(tickIndex) && !this.isTimeMode('xaxis', item)) { var valueX = (this.isCategoriesMode('xaxis', item)) ? item.series.xaxis[ticks][tickIndex].label : item.series.xaxis[ticks][tickIndex].v; if (valueX === x) { content = content.replace(xPattern, item.series.xaxis[ticks][tickIndex].label.replace(/\$/g, '$$$$')); } } } } // change y from number to given label, if given if (typeof item.series.yaxis.ticks !== 'undefined') { for (var yIndex in item.series.yaxis.ticks) { if (item.series.yaxis.ticks.hasOwnProperty(yIndex)) { var valueY = (this.isCategoriesMode('yaxis', item)) ? item.series.yaxis.ticks[yIndex].label : item.series.yaxis.ticks[yIndex].v; if (valueY === y) { content = content.replace(yPattern, item.series.yaxis.ticks[yIndex].label.replace(/\$/g, '$$$$')); } } } } // if no value customization, use tickFormatter by default if (typeof item.series.xaxis.tickFormatter !== 'undefined') { //escape dollar content = content.replace(xPatternWithoutPrecision, item.series.xaxis.tickFormatter(x, item.series.xaxis).replace(/\$/g, '$$')); } if (typeof item.series.yaxis.tickFormatter !== 'undefined') { //escape dollar content = content.replace(yPatternWithoutPrecision, item.series.yaxis.tickFormatter(y, item.series.yaxis).replace(/\$/g, '$$')); } return content; }; // helpers just for readability FlotTooltip.prototype.isTimeMode = function (axisName, item) { return (typeof item.series[axisName].options.mode !== 'undefined' && item.series[axisName].options.mode === 'time'); }; FlotTooltip.prototype.isXDateFormat = function (item) { return (typeof this.tooltipOptions.xDateFormat !== 'undefined' && this.tooltipOptions.xDateFormat !== null); }; FlotTooltip.prototype.isYDateFormat = function (item) { return (typeof this.tooltipOptions.yDateFormat !== 'undefined' && this.tooltipOptions.yDateFormat !== null); }; FlotTooltip.prototype.isCategoriesMode = function (axisName, item) { return (typeof item.series[axisName].options.mode !== 'undefined' && item.series[axisName].options.mode === 'categories'); }; // FlotTooltip.prototype.timestampToDate = function (tmst, dateFormat, options) { var theDate = $.plot.dateGenerator(tmst, options); return $.plot.formatDate(theDate, dateFormat, this.tooltipOptions.monthNames, this.tooltipOptions.dayNames); }; // FlotTooltip.prototype.adjustValPrecision = function (pattern, content, value) { var precision; var matchResult = content.match(pattern); if( matchResult !== null ) { if(RegExp.$1 !== '') { precision = RegExp.$1; value = value.toFixed(precision); // only replace content if precision exists, in other case use thickformater content = content.replace(pattern, value); } } return content; }; // other plugins detection below // check if flot-axislabels plugin (https://github.com/markrcote/flot-axislabels) is used and that an axis label is given FlotTooltip.prototype.hasAxisLabel = function (axisName, item) { return ($.inArray('axisLabels', this.plotPlugins) !== -1 && typeof item.series[axisName].options.axisLabel !== 'undefined' && item.series[axisName].options.axisLabel.length > 0); }; // check whether flot-tickRotor, a plugin which allows rotation of X-axis ticks, is being used FlotTooltip.prototype.hasRotatedXAxisTicks = function (item) { return ($.inArray('tickRotor',this.plotPlugins) !== -1 && typeof item.series.xaxis.rotatedTicks !== 'undefined'); }; // var init = function (plot) { new FlotTooltip(plot); }; // define Flot plugin $.plot.plugins.push({ init: init, options: defaultOptions, name: 'tooltip', version: '0.8.5' }); })(jQuery); /* Pretty handling of time axes. Copyright (c) 2007-2014 IOLA and Ole Laursen. Licensed under the MIT license. Set axis.mode to "time" to enable. See the section "Time series data" in API.txt for details. */ (function($) { var options = { xaxis: { timezone: null, // "browser" for local to the client or timezone for timezone-js timeformat: null, // format string to use twelveHourClock: false, // 12 or 24 time in time mode monthNames: null // list of names of months } }; // round to nearby lower multiple of base function floorInBase(n, base) { return base * Math.floor(n / base); } // Returns a string with the date d formatted according to fmt. // A subset of the Open Group's strftime format is supported. function formatDate(d, fmt, monthNames, dayNames) { if (typeof d.strftime == "function") { return d.strftime(fmt); } var leftPad = function(n, pad) { n = "" + n; pad = "" + (pad == null ? "0" : pad); return n.length == 1 ? pad + n : n; }; var r = []; var escape = false; var hours = d.getHours(); var isAM = hours < 12; if (monthNames == null) { monthNames = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]; } if (dayNames == null) { dayNames = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"]; } var hours12; if (hours > 12) { hours12 = hours - 12; } else if (hours == 0) { hours12 = 12; } else { hours12 = hours; } for (var i = 0; i < fmt.length; ++i) { var c = fmt.charAt(i); if (escape) { switch (c) { case 'a': c = "" + dayNames[d.getDay()]; break; case 'b': c = "" + monthNames[d.getMonth()]; break; case 'd': c = leftPad(d.getDate()); break; case 'e': c = leftPad(d.getDate(), " "); break; case 'h': // For back-compat with 0.7; remove in 1.0 case 'H': c = leftPad(hours); break; case 'I': c = leftPad(hours12); break; case 'l': c = leftPad(hours12, " "); break; case 'm': c = leftPad(d.getMonth() + 1); break; case 'M': c = leftPad(d.getMinutes()); break; // quarters not in Open Group's strftime specification case 'q': c = "" + (Math.floor(d.getMonth() / 3) + 1); break; case 'S': c = leftPad(d.getSeconds()); break; case 'y': c = leftPad(d.getFullYear() % 100); break; case 'Y': c = "" + d.getFullYear(); break; case 'p': c = (isAM) ? ("" + "am") : ("" + "pm"); break; case 'P': c = (isAM) ? ("" + "AM") : ("" + "PM"); break; case 'w': c = "" + d.getDay(); break; } r.push(c); escape = false; } else { if (c == "%") { escape = true; } else { r.push(c); } } } return r.join(""); } // To have a consistent view of time-based data independent of which time // zone the client happens to be in we need a date-like object independent // of time zones. This is done through a wrapper that only calls the UTC // versions of the accessor methods. function makeUtcWrapper(d) { function addProxyMethod(sourceObj, sourceMethod, targetObj, targetMethod) { sourceObj[sourceMethod] = function() { return targetObj[targetMethod].apply(targetObj, arguments); }; }; var utc = { date: d }; // support strftime, if found if (d.strftime != undefined) { addProxyMethod(utc, "strftime", d, "strftime"); } addProxyMethod(utc, "getTime", d, "getTime"); addProxyMethod(utc, "setTime", d, "setTime"); var props = ["Date", "Day", "FullYear", "Hours", "Milliseconds", "Minutes", "Month", "Seconds"]; for (var p = 0; p < props.length; p++) { addProxyMethod(utc, "get" + props[p], d, "getUTC" + props[p]); addProxyMethod(utc, "set" + props[p], d, "setUTC" + props[p]); } return utc; }; // select time zone strategy. This returns a date-like object tied to the // desired timezone function dateGenerator(ts, opts) { if (opts.timezone == "browser") { return new Date(ts); } else if (!opts.timezone || opts.timezone == "utc") { return makeUtcWrapper(new Date(ts)); } else if (typeof timezoneJS != "undefined" && typeof timezoneJS.Date != "undefined") { var d = new timezoneJS.Date(); // timezone-js is fickle, so be sure to set the time zone before // setting the time. d.setTimezone(opts.timezone); d.setTime(ts); return d; } else { return makeUtcWrapper(new Date(ts)); } } // 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, "quarter": 3 * 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 baseSpec = [ [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"] ]; // we don't know which variant(s) we'll need yet, but generating both is // cheap var specMonths = baseSpec.concat([[3, "month"], [6, "month"], [1, "year"]]); var specQuarters = baseSpec.concat([[1, "quarter"], [2, "quarter"], [1, "year"]]); function init(plot) { plot.hooks.processOptions.push(function (plot, options) { $.each(plot.getAxes(), function(axisName, axis) { var opts = axis.options; if (opts.mode == "time") { axis.tickGenerator = function(axis) { var ticks = []; var d = dateGenerator(axis.min, opts); var minSize = 0; // make quarter use a possibility if quarters are // mentioned in either of these options var spec = (opts.tickSize && opts.tickSize[1] === "quarter") || (opts.minTickSize && opts.minTickSize[1] === "quarter") ? specQuarters : specMonths; 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 (axis.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; } } var size = spec[i][0]; var unit = spec[i][1]; // special-case the possibility of several years if (unit == "year") { // if given a minTickSize in years, just use it, // ensuring that it's an integer if (opts.minTickSize != null && opts.minTickSize[1] == "year") { size = Math.floor(opts.minTickSize[0]); } else { var magn = Math.pow(10, Math.floor(Math.log(axis.delta / timeUnitSize.year) / Math.LN10)); var norm = (axis.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; } // minimum size for years is 1 if (size < 1) { size = 1; } } axis.tickSize = opts.tickSize || [size, unit]; var tickSize = axis.tickSize[0]; unit = axis.tickSize[1]; var step = tickSize * timeUnitSize[unit]; if (unit == "second") { d.setSeconds(floorInBase(d.getSeconds(), tickSize)); } else if (unit == "minute") { d.setMinutes(floorInBase(d.getMinutes(), tickSize)); } else if (unit == "hour") { d.setHours(floorInBase(d.getHours(), tickSize)); } else if (unit == "month") { d.setMonth(floorInBase(d.getMonth(), tickSize)); } else if (unit == "quarter") { d.setMonth(3 * floorInBase(d.getMonth() / 3, tickSize)); } else if (unit == "year") { d.setFullYear(floorInBase(d.getFullYear(), tickSize)); } // reset smaller components d.setMilliseconds(0); if (step >= timeUnitSize.minute) { d.setSeconds(0); } if (step >= timeUnitSize.hour) { d.setMinutes(0); } if (step >= timeUnitSize.day) { d.setHours(0); } if (step >= timeUnitSize.day * 4) { d.setDate(1); } if (step >= timeUnitSize.month * 2) { d.setMonth(floorInBase(d.getMonth(), 3)); } if (step >= timeUnitSize.quarter * 2) { d.setMonth(floorInBase(d.getMonth(), 6)); } if (step >= timeUnitSize.year) { d.setMonth(0); } var carry = 0; var v = Number.NaN; var prev; do { prev = v; v = d.getTime(); ticks.push(v); if (unit == "month" || unit == "quarter") { if (tickSize < 1) { // a bit complicated - we'll divide the // month/quarter up but we need to take // care of fractions so we don't end up in // the middle of a day d.setDate(1); var start = d.getTime(); d.setMonth(d.getMonth() + (unit == "quarter" ? 3 : 1)); var end = d.getTime(); d.setTime(v + carry * timeUnitSize.hour + (end - start) * tickSize); carry = d.getHours(); d.setHours(0); } else { d.setMonth(d.getMonth() + tickSize * (unit == "quarter" ? 3 : 1)); } } else if (unit == "year") { d.setFullYear(d.getFullYear() + tickSize); } else { d.setTime(v + step); } } while (v < axis.max && v != prev); return ticks; }; axis.tickFormatter = function (v, axis) { var d = dateGenerator(v, axis.options); // first check global format if (opts.timeformat != null) { return formatDate(d, opts.timeformat, opts.monthNames, opts.dayNames); } // possibly use quarters if quarters are mentioned in // any of these places var useQuarters = (axis.options.tickSize && axis.options.tickSize[1] == "quarter") || (axis.options.minTickSize && axis.options.minTickSize[1] == "quarter"); var t = axis.tickSize[0] * timeUnitSize[axis.tickSize[1]]; var span = axis.max - axis.min; var suffix = (opts.twelveHourClock) ? " %p" : ""; var hourCode = (opts.twelveHourClock) ? "%I" : "%H"; var fmt; if (t < timeUnitSize.minute) { fmt = hourCode + ":%M:%S" + suffix; } else if (t < timeUnitSize.day) { if (span < 2 * timeUnitSize.day) { fmt = hourCode + ":%M" + suffix; } else { fmt = "%b %d " + hourCode + ":%M" + suffix; } } else if (t < timeUnitSize.month) { fmt = "%b %d"; } else if ((useQuarters && t < timeUnitSize.quarter) || (!useQuarters && t < timeUnitSize.year)) { if (span < timeUnitSize.year) { fmt = "%b"; } else { fmt = "%b %Y"; } } else if (useQuarters && t < timeUnitSize.year) { if (span < timeUnitSize.year) { fmt = "Q%q"; } else { fmt = "Q%q %Y"; } } else { fmt = "%Y"; } var rt = formatDate(d, fmt, opts.monthNames, opts.dayNames); return rt; }; } }); }); } $.plot.plugins.push({ init: init, options: options, name: 'time', version: '1.0' }); // Time-axis support used to be in Flot core, which exposed the // formatDate function on the plot object. Various plugins depend // on the function, so we need to re-expose it here. $.plot.formatDate = formatDate; $.plot.dateGenerator = dateGenerator; })(jQuery);