root / static / js / jquery.flot.js @ 04733cdb
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/* Javascript plotting library for jQuery, version 0.8.1.
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Copyright (c) 2007-2013 IOLA and Ole Laursen.
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Licensed under the MIT license.
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*/
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// first an inline dependency, jquery.colorhelpers.js, we inline it here
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// for convenience
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/* Plugin for jQuery for working with colors.
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*
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* Version 1.1.
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*
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* Inspiration from jQuery color animation plugin by John Resig.
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*
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* Released under the MIT license by Ole Laursen, October 2009.
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*
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* Examples:
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*
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* $.color.parse("#fff").scale('rgb', 0.25).add('a', -0.5).toString()
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* var c = $.color.extract($("#mydiv"), 'background-color');
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* console.log(c.r, c.g, c.b, c.a);
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* $.color.make(100, 50, 25, 0.4).toString() // returns "rgba(100,50,25,0.4)"
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*
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* Note that .scale() and .add() return the same modified object
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* instead of making a new one.
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*
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* V. 1.1: Fix error handling so e.g. parsing an empty string does
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* produce a color rather than just crashing.
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*/
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(function(B){B.color={};B.color.make=function(F,E,C,D){var G={};G.r=F||0;G.g=E||0;G.b=C||0;G.a=D!=null?D:1;G.add=function(J,I){for(var H=0;H<J.length;++H){G[J.charAt(H)]+=I}return G.normalize()};G.scale=function(J,I){for(var H=0;H<J.length;++H){G[J.charAt(H)]*=I}return G.normalize()};G.toString=function(){if(G.a>=1){return"rgb("+[G.r,G.g,G.b].join(",")+")"}else{return"rgba("+[G.r,G.g,G.b,G.a].join(",")+")"}};G.normalize=function(){function H(J,K,I){return K<J?J:(K>I?I:K)}G.r=H(0,parseInt(G.r),255);G.g=H(0,parseInt(G.g),255);G.b=H(0,parseInt(G.b),255);G.a=H(0,G.a,1);return G};G.clone=function(){return B.color.make(G.r,G.b,G.g,G.a)};return G.normalize()};B.color.extract=function(D,C){var E;do{E=D.css(C).toLowerCase();if(E!=""&&E!="transparent"){break}D=D.parent()}while(!B.nodeName(D.get(0),"body"));if(E=="rgba(0, 0, 0, 0)"){E="transparent"}return B.color.parse(E)};B.color.parse=function(F){var E,C=B.color.make;if(E=/rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(F)){return C(parseInt(E[1],10),parseInt(E[2],10),parseInt(E[3],10))}if(E=/rgba\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(F)){return C(parseInt(E[1],10),parseInt(E[2],10),parseInt(E[3],10),parseFloat(E[4]))}if(E=/rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(F)){return C(parseFloat(E[1])*2.55,parseFloat(E[2])*2.55,parseFloat(E[3])*2.55)}if(E=/rgba\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(F)){return C(parseFloat(E[1])*2.55,parseFloat(E[2])*2.55,parseFloat(E[3])*2.55,parseFloat(E[4]))}if(E=/#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(F)){return C(parseInt(E[1],16),parseInt(E[2],16),parseInt(E[3],16))}if(E=/#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(F)){return C(parseInt(E[1]+E[1],16),parseInt(E[2]+E[2],16),parseInt(E[3]+E[3],16))}var D=B.trim(F).toLowerCase();if(D=="transparent"){return C(255,255,255,0)}else{E=A[D]||[0,0,0];return C(E[0],E[1],E[2])}};var A={aqua:[0,255,255],azure:[240,255,255],beige:[245,245,220],black:[0,0,0],blue:[0,0,255],brown:[165,42,42],cyan:[0,255,255],darkblue:[0,0,139],darkcyan:[0,139,139],darkgrey:[169,169,169],darkgreen:[0,100,0],darkkhaki:[189,183,107],darkmagenta:[139,0,139],darkolivegreen:[85,107,47],darkorange:[255,140,0],darkorchid:[153,50,204],darkred:[139,0,0],darksalmon:[233,150,122],darkviolet:[148,0,211],fuchsia:[255,0,255],gold:[255,215,0],green:[0,128,0],indigo:[75,0,130],khaki:[240,230,140],lightblue:[173,216,230],lightcyan:[224,255,255],lightgreen:[144,238,144],lightgrey:[211,211,211],lightpink:[255,182,193],lightyellow:[255,255,224],lime:[0,255,0],magenta:[255,0,255],maroon:[128,0,0],navy:[0,0,128],olive:[128,128,0],orange:[255,165,0],pink:[255,192,203],purple:[128,0,128],violet:[128,0,128],red:[255,0,0],silver:[192,192,192],white:[255,255,255],yellow:[255,255,0]}})(jQuery); |
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// the actual Flot code
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(function($) { |
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// Cache the prototype hasOwnProperty for faster access
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var hasOwnProperty = Object.prototype.hasOwnProperty;
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///////////////////////////////////////////////////////////////////////////
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// The Canvas object is a wrapper around an HTML5 <canvas> tag.
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//
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// @constructor
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// @param {string} cls List of classes to apply to the canvas.
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// @param {element} container Element onto which to append the canvas.
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//
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// Requiring a container is a little iffy, but unfortunately canvas
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// operations don't work unless the canvas is attached to the DOM.
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function Canvas(cls, container) { |
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var element = container.children("." + cls)[0]; |
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if (element == null) { |
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element = document.createElement("canvas");
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element.className = cls; |
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$(element).css({ direction: "ltr", position: "absolute", left: 0, top: 0 }) |
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.appendTo(container); |
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// If HTML5 Canvas isn't available, fall back to [Ex|Flash]canvas
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if (!element.getContext) {
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if (window.G_vmlCanvasManager) {
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element = window.G_vmlCanvasManager.initElement(element); |
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} else {
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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."); |
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} |
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} |
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} |
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this.element = element;
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var context = this.context = element.getContext("2d"); |
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// Determine the screen's ratio of physical to device-independent
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// pixels. This is the ratio between the canvas width that the browser
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// advertises and the number of pixels actually present in that space.
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// The iPhone 4, for example, has a device-independent width of 320px,
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// but its screen is actually 640px wide. It therefore has a pixel
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// ratio of 2, while most normal devices have a ratio of 1.
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var devicePixelRatio = window.devicePixelRatio || 1, |
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backingStoreRatio = |
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context.webkitBackingStorePixelRatio || |
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context.mozBackingStorePixelRatio || |
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context.msBackingStorePixelRatio || |
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context.oBackingStorePixelRatio || |
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context.backingStorePixelRatio || 1;
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this.pixelRatio = devicePixelRatio / backingStoreRatio;
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// Size the canvas to match the internal dimensions of its container
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this.resize(container.width(), container.height());
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// Collection of HTML div layers for text overlaid onto the canvas
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this.textContainer = null; |
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this.text = {};
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// Cache of text fragments and metrics, so we can avoid expensively
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// re-calculating them when the plot is re-rendered in a loop.
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this._textCache = {};
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} |
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// Resizes the canvas to the given dimensions.
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//
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// @param {number} width New width of the canvas, in pixels.
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// @param {number} width New height of the canvas, in pixels.
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Canvas.prototype.resize = function(width, height) { |
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if (width <= 0 || height <= 0) { |
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throw new Error("Invalid dimensions for plot, width = " + width + ", height = " + height); |
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} |
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var element = this.element, |
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context = this.context,
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pixelRatio = this.pixelRatio;
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// Resize the canvas, increasing its density based on the display's
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// pixel ratio; basically giving it more pixels without increasing the
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// size of its element, to take advantage of the fact that retina
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// displays have that many more pixels in the same advertised space.
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// Resizing should reset the state (excanvas seems to be buggy though)
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if (this.width != width) { |
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element.width = width * pixelRatio; |
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element.style.width = width + "px";
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this.width = width;
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} |
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if (this.height != height) { |
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element.height = height * pixelRatio; |
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element.style.height = height + "px";
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this.height = height;
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} |
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// Save the context, so we can reset in case we get replotted. The
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// restore ensure that we're really back at the initial state, and
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// should be safe even if we haven't saved the initial state yet.
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context.restore(); |
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context.save(); |
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// Scale the coordinate space to match the display density; so even though we
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// may have twice as many pixels, we still want lines and other drawing to
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// appear at the same size; the extra pixels will just make them crisper.
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context.scale(pixelRatio, pixelRatio); |
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}; |
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// Clears the entire canvas area, not including any overlaid HTML text
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Canvas.prototype.clear = function() { |
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this.context.clearRect(0, 0, this.width, this.height); |
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}; |
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// Finishes rendering the canvas, including managing the text overlay.
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Canvas.prototype.render = function() { |
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var cache = this._textCache; |
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// For each text layer, add elements marked as active that haven't
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// already been rendered, and remove those that are no longer active.
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for (var layerKey in cache) { |
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if (hasOwnProperty.call(cache, layerKey)) {
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var layer = this.getTextLayer(layerKey), |
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layerCache = cache[layerKey]; |
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layer.hide(); |
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for (var styleKey in layerCache) { |
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if (hasOwnProperty.call(layerCache, styleKey)) {
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var styleCache = layerCache[styleKey];
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for (var key in styleCache) { |
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if (hasOwnProperty.call(styleCache, key)) {
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var positions = styleCache[key].positions;
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for (var i = 0, position; position = positions[i]; i++) { |
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if (position.active) {
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if (!position.rendered) {
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layer.append(position.element); |
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position.rendered = true;
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} |
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} else {
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positions.splice(i--, 1);
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if (position.rendered) {
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position.element.detach(); |
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} |
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} |
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} |
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if (positions.length == 0) { |
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delete styleCache[key];
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} |
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} |
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} |
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} |
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} |
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layer.show(); |
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} |
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} |
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}; |
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// Creates (if necessary) and returns the text overlay container.
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//
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// @param {string} classes String of space-separated CSS classes used to
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// uniquely identify the text layer.
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// @return {object} The jQuery-wrapped text-layer div.
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Canvas.prototype.getTextLayer = function(classes) { |
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var layer = this.text[classes]; |
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// Create the text layer if it doesn't exist
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if (layer == null) { |
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// Create the text layer container, if it doesn't exist
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if (this.textContainer == null) { |
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this.textContainer = $("<div class='flot-text'></div>") |
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.css({
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position: "absolute", |
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top: 0, |
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left: 0, |
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bottom: 0, |
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right: 0, |
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'font-size': "smaller", |
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color: "#545454" |
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}) |
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.insertAfter(this.element);
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} |
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layer = this.text[classes] = $("<div></div>") |
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.addClass(classes) |
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.css({
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position: "absolute", |
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top: 0, |
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left: 0, |
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bottom: 0, |
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right: 0 |
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}) |
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.appendTo(this.textContainer);
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} |
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return layer;
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}; |
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// Creates (if necessary) and returns a text info object.
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//
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// The object looks like this:
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//
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// {
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// width: Width of the text's wrapper div.
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// height: Height of the text's wrapper div.
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// element: The jQuery-wrapped HTML div containing the text.
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// positions: Array of positions at which this text is drawn.
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// }
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//
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// The positions array contains objects that look like this:
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//
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// {
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// active: Flag indicating whether the text should be visible.
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// rendered: Flag indicating whether the text is currently visible.
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// element: The jQuery-wrapped HTML div containing the text.
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// x: X coordinate at which to draw the text.
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// y: Y coordinate at which to draw the text.
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// }
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//
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// Each position after the first receives a clone of the original element.
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//
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// The idea is that that the width, height, and general 'identity' of the
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// text is constant no matter where it is placed; the placements are a
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// secondary property.
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//
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// Canvas maintains a cache of recently-used text info objects; getTextInfo
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// either returns the cached element or creates a new entry.
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//
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// @param {string} layer A string of space-separated CSS classes uniquely
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// identifying the layer containing this text.
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// @param {string} text Text string to retrieve info for.
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// @param {(string|object)=} font Either a string of space-separated CSS
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// classes or a font-spec object, defining the text's font and style.
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// @param {number=} angle Angle at which to rotate the text, in degrees.
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// Angle is currently unused, it will be implemented in the future.
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// @param {number=} width Maximum width of the text before it wraps.
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// @return {object} a text info object.
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Canvas.prototype.getTextInfo = function(layer, text, font, angle, width) { |
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var textStyle, layerCache, styleCache, info;
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// Cast the value to a string, in case we were given a number or such
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text = "" + text;
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// If the font is a font-spec object, generate a CSS font definition
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if (typeof font === "object") { |
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textStyle = font.style + " " + font.variant + " " + font.weight + " " + font.size + "px/" + font.lineHeight + "px " + font.family; |
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} else {
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textStyle = font; |
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} |
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// Retrieve (or create) the cache for the text's layer and styles
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layerCache = this._textCache[layer];
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if (layerCache == null) { |
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layerCache = this._textCache[layer] = {};
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} |
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styleCache = layerCache[textStyle]; |
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if (styleCache == null) { |
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styleCache = layerCache[textStyle] = {};
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} |
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info = styleCache[text]; |
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// If we can't find a matching element in our cache, create a new one
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if (info == null) { |
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var element = $("<div></div>").html(text) |
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.css({
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position: "absolute", |
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'max-width': width,
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top: -9999 |
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}) |
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.appendTo(this.getTextLayer(layer));
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if (typeof font === "object") { |
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element.css({
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font: textStyle,
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color: font.color
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}); |
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} else if (typeof font === "string") { |
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element.addClass(font); |
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} |
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info = styleCache[text] = {
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width: element.outerWidth(true), |
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height: element.outerHeight(true), |
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element: element,
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positions: []
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}; |
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element.detach(); |
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} |
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return info;
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}; |
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// Adds a text string to the canvas text overlay.
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//
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// The text isn't drawn immediately; it is marked as rendering, which will
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// result in its addition to the canvas on the next render pass.
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//
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// @param {string} layer A string of space-separated CSS classes uniquely
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// identifying the layer containing this text.
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// @param {number} x X coordinate at which to draw the text.
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// @param {number} y Y coordinate at which to draw the text.
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// @param {string} text Text string to draw.
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// @param {(string|object)=} font Either a string of space-separated CSS
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// classes or a font-spec object, defining the text's font and style.
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// @param {number=} angle Angle at which to rotate the text, in degrees.
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// Angle is currently unused, it will be implemented in the future.
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// @param {number=} width Maximum width of the text before it wraps.
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// @param {string=} halign Horizontal alignment of the text; either "left",
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// "center" or "right".
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// @param {string=} valign Vertical alignment of the text; either "top",
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// "middle" or "bottom".
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Canvas.prototype.addText = function(layer, x, y, text, font, angle, width, halign, valign) { |
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var info = this.getTextInfo(layer, text, font, angle, width), |
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positions = info.positions; |
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// Tweak the div's position to match the text's alignment
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if (halign == "center") { |
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x -= info.width / 2;
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} else if (halign == "right") { |
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x -= info.width; |
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} |
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if (valign == "middle") { |
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y -= info.height / 2;
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} else if (valign == "bottom") { |
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y -= info.height; |
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} |
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// Determine whether this text already exists at this position.
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| 408 |
// If so, mark it for inclusion in the next render pass.
|
| 409 |
|
| 410 |
for (var i = 0, position; position = positions[i]; i++) { |
| 411 |
if (position.x == x && position.y == y) {
|
| 412 |
position.active = true;
|
| 413 |
return;
|
| 414 |
} |
| 415 |
} |
| 416 |
|
| 417 |
// If the text doesn't exist at this position, create a new entry
|
| 418 |
|
| 419 |
// For the very first position we'll re-use the original element,
|
| 420 |
// while for subsequent ones we'll clone it.
|
| 421 |
|
| 422 |
position = {
|
| 423 |
active: true, |
| 424 |
rendered: false, |
| 425 |
element: positions.length ? info.element.clone() : info.element,
|
| 426 |
x: x,
|
| 427 |
y: y
|
| 428 |
} |
| 429 |
|
| 430 |
positions.push(position); |
| 431 |
|
| 432 |
// Move the element to its final position within the container
|
| 433 |
|
| 434 |
position.element.css({
|
| 435 |
top: Math.round(y),
|
| 436 |
left: Math.round(x),
|
| 437 |
'text-align': halign // In case the text wraps |
| 438 |
}); |
| 439 |
}; |
| 440 |
|
| 441 |
// Removes one or more text strings from the canvas text overlay.
|
| 442 |
//
|
| 443 |
// If no parameters are given, all text within the layer is removed.
|
| 444 |
//
|
| 445 |
// Note that the text is not immediately removed; it is simply marked as
|
| 446 |
// inactive, which will result in its removal on the next render pass.
|
| 447 |
// This avoids the performance penalty for 'clear and redraw' behavior,
|
| 448 |
// where we potentially get rid of all text on a layer, but will likely
|
| 449 |
// add back most or all of it later, as when redrawing axes, for example.
|
| 450 |
//
|
| 451 |
// @param {string} layer A string of space-separated CSS classes uniquely
|
| 452 |
// identifying the layer containing this text.
|
| 453 |
// @param {number=} x X coordinate of the text.
|
| 454 |
// @param {number=} y Y coordinate of the text.
|
| 455 |
// @param {string=} text Text string to remove.
|
| 456 |
// @param {(string|object)=} font Either a string of space-separated CSS
|
| 457 |
// classes or a font-spec object, defining the text's font and style.
|
| 458 |
// @param {number=} angle Angle at which the text is rotated, in degrees.
|
| 459 |
// Angle is currently unused, it will be implemented in the future.
|
| 460 |
|
| 461 |
Canvas.prototype.removeText = function(layer, x, y, text, font, angle) { |
| 462 |
if (text == null) { |
| 463 |
var layerCache = this._textCache[layer]; |
| 464 |
if (layerCache != null) { |
| 465 |
for (var styleKey in layerCache) { |
| 466 |
if (hasOwnProperty.call(layerCache, styleKey)) {
|
| 467 |
var styleCache = layerCache[styleKey];
|
| 468 |
for (var key in styleCache) { |
| 469 |
if (hasOwnProperty.call(styleCache, key)) {
|
| 470 |
var positions = styleCache[key].positions;
|
| 471 |
for (var i = 0, position; position = positions[i]; i++) { |
| 472 |
position.active = false;
|
| 473 |
} |
| 474 |
} |
| 475 |
} |
| 476 |
} |
| 477 |
} |
| 478 |
} |
| 479 |
} else {
|
| 480 |
var positions = this.getTextInfo(layer, text, font, angle).positions; |
| 481 |
for (var i = 0, position; position = positions[i]; i++) { |
| 482 |
if (position.x == x && position.y == y) {
|
| 483 |
position.active = false;
|
| 484 |
} |
| 485 |
} |
| 486 |
} |
| 487 |
}; |
| 488 |
|
| 489 |
///////////////////////////////////////////////////////////////////////////
|
| 490 |
// The top-level container for the entire plot.
|
| 491 |
|
| 492 |
function Plot(placeholder, data_, options_, plugins) { |
| 493 |
// data is on the form:
|
| 494 |
// [ series1, series2 ... ]
|
| 495 |
// where series is either just the data as [ [x1, y1], [x2, y2], ... ]
|
| 496 |
// or { data: [ [x1, y1], [x2, y2], ... ], label: "some label", ... }
|
| 497 |
|
| 498 |
var series = [],
|
| 499 |
options = {
|
| 500 |
// the color theme used for graphs
|
| 501 |
colors: ["#edc240", "#afd8f8", "#cb4b4b", "#4da74d", "#9440ed"], |
| 502 |
legend: {
|
| 503 |
show: true, |
| 504 |
noColumns: 1, // number of colums in legend table |
| 505 |
labelFormatter: null, // fn: string -> string |
| 506 |
labelBoxBorderColor: "#ccc", // border color for the little label boxes |
| 507 |
container: null, // container (as jQuery object) to put legend in, null means default on top of graph |
| 508 |
position: "ne", // position of default legend container within plot |
| 509 |
margin: 5, // distance from grid edge to default legend container within plot |
| 510 |
backgroundColor: null, // null means auto-detect |
| 511 |
backgroundOpacity: 0.85, // set to 0 to avoid background |
| 512 |
sorted: null // default to no legend sorting |
| 513 |
}, |
| 514 |
xaxis: {
|
| 515 |
show: null, // null = auto-detect, true = always, false = never |
| 516 |
position: "bottom", // or "top" |
| 517 |
mode: null, // null or "time" |
| 518 |
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" } |
| 519 |
color: null, // base color, labels, ticks |
| 520 |
tickColor: null, // possibly different color of ticks, e.g. "rgba(0,0,0,0.15)" |
| 521 |
transform: null, // null or f: number -> number to transform axis |
| 522 |
inverseTransform: null, // if transform is set, this should be the inverse function |
| 523 |
min: null, // min. value to show, null means set automatically |
| 524 |
max: null, // max. value to show, null means set automatically |
| 525 |
autoscaleMargin: null, // margin in % to add if auto-setting min/max |
| 526 |
ticks: null, // either [1, 3] or [[1, "a"], 3] or (fn: axis info -> ticks) or app. number of ticks for auto-ticks |
| 527 |
tickFormatter: null, // fn: number -> string |
| 528 |
labelWidth: null, // size of tick labels in pixels |
| 529 |
labelHeight: null, |
| 530 |
reserveSpace: null, // whether to reserve space even if axis isn't shown |
| 531 |
tickLength: null, // size in pixels of ticks, or "full" for whole line |
| 532 |
alignTicksWithAxis: null, // axis number or null for no sync |
| 533 |
tickDecimals: null, // no. of decimals, null means auto |
| 534 |
tickSize: null, // number or [number, "unit"] |
| 535 |
minTickSize: null // number or [number, "unit"] |
| 536 |
}, |
| 537 |
yaxis: {
|
| 538 |
autoscaleMargin: 0.02, |
| 539 |
position: "left" // or "right" |
| 540 |
}, |
| 541 |
xaxes: [],
|
| 542 |
yaxes: [],
|
| 543 |
series: {
|
| 544 |
points: {
|
| 545 |
show: false, |
| 546 |
radius: 3, |
| 547 |
lineWidth: 2, // in pixels |
| 548 |
fill: true, |
| 549 |
fillColor: "#ffffff", |
| 550 |
symbol: "circle" // or callback |
| 551 |
}, |
| 552 |
lines: {
|
| 553 |
// we don't put in show: false so we can see
|
| 554 |
// whether lines were actively disabled
|
| 555 |
lineWidth: 2, // in pixels |
| 556 |
fill: false, |
| 557 |
fillColor: null, |
| 558 |
steps: false |
| 559 |
// Omit 'zero', so we can later default its value to
|
| 560 |
// match that of the 'fill' option.
|
| 561 |
}, |
| 562 |
bars: {
|
| 563 |
show: false, |
| 564 |
lineWidth: 2, // in pixels |
| 565 |
barWidth: 1, // in units of the x axis |
| 566 |
fill: true, |
| 567 |
fillColor: null, |
| 568 |
align: "left", // "left", "right", or "center" |
| 569 |
horizontal: false, |
| 570 |
zero: true |
| 571 |
}, |
| 572 |
shadowSize: 3, |
| 573 |
highlightColor: null |
| 574 |
}, |
| 575 |
grid: {
|
| 576 |
show: true, |
| 577 |
aboveData: false, |
| 578 |
color: "#545454", // primary color used for outline and labels |
| 579 |
backgroundColor: null, // null for transparent, else color |
| 580 |
borderColor: null, // set if different from the grid color |
| 581 |
tickColor: null, // color for the ticks, e.g. "rgba(0,0,0,0.15)" |
| 582 |
margin: 0, // distance from the canvas edge to the grid |
| 583 |
labelMargin: 5, // in pixels |
| 584 |
axisMargin: 8, // in pixels |
| 585 |
borderWidth: 2, // in pixels |
| 586 |
minBorderMargin: null, // in pixels, null means taken from points radius |
| 587 |
markings: null, // array of ranges or fn: axes -> array of ranges |
| 588 |
markingsColor: "#f4f4f4", |
| 589 |
markingsLineWidth: 2, |
| 590 |
// interactive stuff
|
| 591 |
clickable: false, |
| 592 |
hoverable: false, |
| 593 |
autoHighlight: true, // highlight in case mouse is near |
| 594 |
mouseActiveRadius: 10 // how far the mouse can be away to activate an item |
| 595 |
}, |
| 596 |
interaction: {
|
| 597 |
redrawOverlayInterval: 1000/60 // time between updates, -1 means in same flow |
| 598 |
}, |
| 599 |
hooks: {}
|
| 600 |
}, |
| 601 |
surface = null, // the canvas for the plot itself |
| 602 |
overlay = null, // canvas for interactive stuff on top of plot |
| 603 |
eventHolder = null, // jQuery object that events should be bound to |
| 604 |
ctx = null, octx = null, |
| 605 |
xaxes = [], yaxes = [], |
| 606 |
plotOffset = { left: 0, right: 0, top: 0, bottom: 0},
|
| 607 |
plotWidth = 0, plotHeight = 0, |
| 608 |
hooks = {
|
| 609 |
processOptions: [],
|
| 610 |
processRawData: [],
|
| 611 |
processDatapoints: [],
|
| 612 |
processOffset: [],
|
| 613 |
drawBackground: [],
|
| 614 |
drawSeries: [],
|
| 615 |
draw: [],
|
| 616 |
bindEvents: [],
|
| 617 |
drawOverlay: [],
|
| 618 |
shutdown: []
|
| 619 |
}, |
| 620 |
plot = this;
|
| 621 |
|
| 622 |
// public functions
|
| 623 |
plot.setData = setData; |
| 624 |
plot.setupGrid = setupGrid; |
| 625 |
plot.draw = draw; |
| 626 |
plot.getPlaceholder = function() { return placeholder; }; |
| 627 |
plot.getCanvas = function() { return surface.element; }; |
| 628 |
plot.getPlotOffset = function() { return plotOffset; }; |
| 629 |
plot.width = function () { return plotWidth; }; |
| 630 |
plot.height = function () { return plotHeight; }; |
| 631 |
plot.offset = function () { |
| 632 |
var o = eventHolder.offset();
|
| 633 |
o.left += plotOffset.left; |
| 634 |
o.top += plotOffset.top; |
| 635 |
return o;
|
| 636 |
}; |
| 637 |
plot.getData = function () { return series; }; |
| 638 |
plot.getAxes = function () { |
| 639 |
var res = {}, i;
|
| 640 |
$.each(xaxes.concat(yaxes), function (_, axis) { |
| 641 |
if (axis)
|
| 642 |
res[axis.direction + (axis.n != 1 ? axis.n : "") + "axis"] = axis; |
| 643 |
}); |
| 644 |
return res;
|
| 645 |
}; |
| 646 |
plot.getXAxes = function () { return xaxes; }; |
| 647 |
plot.getYAxes = function () { return yaxes; }; |
| 648 |
plot.c2p = canvasToAxisCoords; |
| 649 |
plot.p2c = axisToCanvasCoords; |
| 650 |
plot.getOptions = function () { return options; }; |
| 651 |
plot.highlight = highlight; |
| 652 |
plot.unhighlight = unhighlight; |
| 653 |
plot.triggerRedrawOverlay = triggerRedrawOverlay; |
| 654 |
plot.pointOffset = function(point) { |
| 655 |
return {
|
| 656 |
left: parseInt(xaxes[axisNumber(point, "x") - 1].p2c(+point.x) + plotOffset.left, 10), |
| 657 |
top: parseInt(yaxes[axisNumber(point, "y") - 1].p2c(+point.y) + plotOffset.top, 10) |
| 658 |
}; |
| 659 |
}; |
| 660 |
plot.shutdown = shutdown; |
| 661 |
plot.resize = function () { |
| 662 |
var width = placeholder.width(),
|
| 663 |
height = placeholder.height(); |
| 664 |
surface.resize(width, height); |
| 665 |
overlay.resize(width, height); |
| 666 |
}; |
| 667 |
|
| 668 |
// public attributes
|
| 669 |
plot.hooks = hooks; |
| 670 |
|
| 671 |
// initialize
|
| 672 |
initPlugins(plot); |
| 673 |
parseOptions(options_); |
| 674 |
setupCanvases(); |
| 675 |
setData(data_); |
| 676 |
setupGrid(); |
| 677 |
draw(); |
| 678 |
bindEvents(); |
| 679 |
|
| 680 |
|
| 681 |
function executeHooks(hook, args) { |
| 682 |
args = [plot].concat(args); |
| 683 |
for (var i = 0; i < hook.length; ++i) |
| 684 |
hook[i].apply(this, args);
|
| 685 |
} |
| 686 |
|
| 687 |
function initPlugins() { |
| 688 |
|
| 689 |
// References to key classes, allowing plugins to modify them
|
| 690 |
|
| 691 |
var classes = {
|
| 692 |
Canvas: Canvas
|
| 693 |
}; |
| 694 |
|
| 695 |
for (var i = 0; i < plugins.length; ++i) { |
| 696 |
var p = plugins[i];
|
| 697 |
p.init(plot, classes); |
| 698 |
if (p.options)
|
| 699 |
$.extend(true, options, p.options); |
| 700 |
} |
| 701 |
} |
| 702 |
|
| 703 |
function parseOptions(opts) { |
| 704 |
|
| 705 |
$.extend(true, options, opts); |
| 706 |
|
| 707 |
// $.extend merges arrays, rather than replacing them. When less
|
| 708 |
// colors are provided than the size of the default palette, we
|
| 709 |
// end up with those colors plus the remaining defaults, which is
|
| 710 |
// not expected behavior; avoid it by replacing them here.
|
| 711 |
|
| 712 |
if (opts && opts.colors) {
|
| 713 |
options.colors = opts.colors; |
| 714 |
} |
| 715 |
|
| 716 |
if (options.xaxis.color == null) |
| 717 |
options.xaxis.color = $.color.parse(options.grid.color).scale('a', 0.22).toString(); |
| 718 |
if (options.yaxis.color == null) |
| 719 |
options.yaxis.color = $.color.parse(options.grid.color).scale('a', 0.22).toString(); |
| 720 |
|
| 721 |
if (options.xaxis.tickColor == null) // grid.tickColor for back-compatibility |
| 722 |
options.xaxis.tickColor = options.grid.tickColor || options.xaxis.color; |
| 723 |
if (options.yaxis.tickColor == null) // grid.tickColor for back-compatibility |
| 724 |
options.yaxis.tickColor = options.grid.tickColor || options.yaxis.color; |
| 725 |
|
| 726 |
if (options.grid.borderColor == null) |
| 727 |
options.grid.borderColor = options.grid.color; |
| 728 |
if (options.grid.tickColor == null) |
| 729 |
options.grid.tickColor = $.color.parse(options.grid.color).scale('a', 0.22).toString(); |
| 730 |
|
| 731 |
// Fill in defaults for axis options, including any unspecified
|
| 732 |
// font-spec fields, if a font-spec was provided.
|
| 733 |
|
| 734 |
// If no x/y axis options were provided, create one of each anyway,
|
| 735 |
// since the rest of the code assumes that they exist.
|
| 736 |
|
| 737 |
var i, axisOptions, axisCount,
|
| 738 |
fontDefaults = {
|
| 739 |
style: placeholder.css("font-style"), |
| 740 |
size: Math.round(0.8 * (+placeholder.css("font-size").replace("px", "") || 13)), |
| 741 |
variant: placeholder.css("font-variant"), |
| 742 |
weight: placeholder.css("font-weight"), |
| 743 |
family: placeholder.css("font-family") |
| 744 |
}; |
| 745 |
|
| 746 |
fontDefaults.lineHeight = fontDefaults.size * 1.15;
|
| 747 |
|
| 748 |
axisCount = options.xaxes.length || 1;
|
| 749 |
for (i = 0; i < axisCount; ++i) { |
| 750 |
|
| 751 |
axisOptions = options.xaxes[i]; |
| 752 |
if (axisOptions && !axisOptions.tickColor) {
|
| 753 |
axisOptions.tickColor = axisOptions.color; |
| 754 |
} |
| 755 |
|
| 756 |
axisOptions = $.extend(true, {}, options.xaxis, axisOptions); |
| 757 |
options.xaxes[i] = axisOptions; |
| 758 |
|
| 759 |
if (axisOptions.font) {
|
| 760 |
axisOptions.font = $.extend({}, fontDefaults, axisOptions.font);
|
| 761 |
if (!axisOptions.font.color) {
|
| 762 |
axisOptions.font.color = axisOptions.color; |
| 763 |
} |
| 764 |
} |
| 765 |
} |
| 766 |
|
| 767 |
axisCount = options.yaxes.length || 1;
|
| 768 |
for (i = 0; i < axisCount; ++i) { |
| 769 |
|
| 770 |
axisOptions = options.yaxes[i]; |
| 771 |
if (axisOptions && !axisOptions.tickColor) {
|
| 772 |
axisOptions.tickColor = axisOptions.color; |
| 773 |
} |
| 774 |
|
| 775 |
axisOptions = $.extend(true, {}, options.yaxis, axisOptions); |
| 776 |
options.yaxes[i] = axisOptions; |
| 777 |
|
| 778 |
if (axisOptions.font) {
|
| 779 |
axisOptions.font = $.extend({}, fontDefaults, axisOptions.font);
|
| 780 |
if (!axisOptions.font.color) {
|
| 781 |
axisOptions.font.color = axisOptions.color; |
| 782 |
} |
| 783 |
} |
| 784 |
} |
| 785 |
|
| 786 |
// backwards compatibility, to be removed in future
|
| 787 |
if (options.xaxis.noTicks && options.xaxis.ticks == null) |
| 788 |
options.xaxis.ticks = options.xaxis.noTicks; |
| 789 |
if (options.yaxis.noTicks && options.yaxis.ticks == null) |
| 790 |
options.yaxis.ticks = options.yaxis.noTicks; |
| 791 |
if (options.x2axis) {
|
| 792 |
options.xaxes[1] = $.extend(true, {}, options.xaxis, options.x2axis); |
| 793 |
options.xaxes[1].position = "top"; |
| 794 |
} |
| 795 |
if (options.y2axis) {
|
| 796 |
options.yaxes[1] = $.extend(true, {}, options.yaxis, options.y2axis); |
| 797 |
options.yaxes[1].position = "right"; |
| 798 |
} |
| 799 |
if (options.grid.coloredAreas)
|
| 800 |
options.grid.markings = options.grid.coloredAreas; |
| 801 |
if (options.grid.coloredAreasColor)
|
| 802 |
options.grid.markingsColor = options.grid.coloredAreasColor; |
| 803 |
if (options.lines)
|
| 804 |
$.extend(true, options.series.lines, options.lines); |
| 805 |
if (options.points)
|
| 806 |
$.extend(true, options.series.points, options.points); |
| 807 |
if (options.bars)
|
| 808 |
$.extend(true, options.series.bars, options.bars); |
| 809 |
if (options.shadowSize != null) |
| 810 |
options.series.shadowSize = options.shadowSize; |
| 811 |
if (options.highlightColor != null) |
| 812 |
options.series.highlightColor = options.highlightColor; |
| 813 |
|
| 814 |
// save options on axes for future reference
|
| 815 |
for (i = 0; i < options.xaxes.length; ++i) |
| 816 |
getOrCreateAxis(xaxes, i + 1).options = options.xaxes[i];
|
| 817 |
for (i = 0; i < options.yaxes.length; ++i) |
| 818 |
getOrCreateAxis(yaxes, i + 1).options = options.yaxes[i];
|
| 819 |
|
| 820 |
// add hooks from options
|
| 821 |
for (var n in hooks) |
| 822 |
if (options.hooks[n] && options.hooks[n].length)
|
| 823 |
hooks[n] = hooks[n].concat(options.hooks[n]); |
| 824 |
|
| 825 |
executeHooks(hooks.processOptions, [options]); |
| 826 |
} |
| 827 |
|
| 828 |
function setData(d) { |
| 829 |
series = parseData(d); |
| 830 |
fillInSeriesOptions(); |
| 831 |
processData(); |
| 832 |
} |
| 833 |
|
| 834 |
function parseData(d) { |
| 835 |
var res = [];
|
| 836 |
for (var i = 0; i < d.length; ++i) { |
| 837 |
var s = $.extend(true, {}, options.series); |
| 838 |
|
| 839 |
if (d[i].data != null) { |
| 840 |
s.data = d[i].data; // move the data instead of deep-copy
|
| 841 |
delete d[i].data;
|
| 842 |
|
| 843 |
$.extend(true, s, d[i]); |
| 844 |
|
| 845 |
d[i].data = s.data; |
| 846 |
} |
| 847 |
else
|
| 848 |
s.data = d[i]; |
| 849 |
res.push(s); |
| 850 |
} |
| 851 |
|
| 852 |
return res;
|
| 853 |
} |
| 854 |
|
| 855 |
function axisNumber(obj, coord) { |
| 856 |
var a = obj[coord + "axis"]; |
| 857 |
if (typeof a == "object") // if we got a real axis, extract number |
| 858 |
a = a.n; |
| 859 |
if (typeof a != "number") |
| 860 |
a = 1; // default to first axis |
| 861 |
return a;
|
| 862 |
} |
| 863 |
|
| 864 |
function allAxes() { |
| 865 |
// return flat array without annoying null entries
|
| 866 |
return $.grep(xaxes.concat(yaxes), function (a) { return a; }); |
| 867 |
} |
| 868 |
|
| 869 |
function canvasToAxisCoords(pos) { |
| 870 |
// return an object with x/y corresponding to all used axes
|
| 871 |
var res = {}, i, axis;
|
| 872 |
for (i = 0; i < xaxes.length; ++i) { |
| 873 |
axis = xaxes[i]; |
| 874 |
if (axis && axis.used)
|
| 875 |
res["x" + axis.n] = axis.c2p(pos.left);
|
| 876 |
} |
| 877 |
|
| 878 |
for (i = 0; i < yaxes.length; ++i) { |
| 879 |
axis = yaxes[i]; |
| 880 |
if (axis && axis.used)
|
| 881 |
res["y" + axis.n] = axis.c2p(pos.top);
|
| 882 |
} |
| 883 |
|
| 884 |
if (res.x1 !== undefined) |
| 885 |
res.x = res.x1; |
| 886 |
if (res.y1 !== undefined) |
| 887 |
res.y = res.y1; |
| 888 |
|
| 889 |
return res;
|
| 890 |
} |
| 891 |
|
| 892 |
function axisToCanvasCoords(pos) { |
| 893 |
// get canvas coords from the first pair of x/y found in pos
|
| 894 |
var res = {}, i, axis, key;
|
| 895 |
|
| 896 |
for (i = 0; i < xaxes.length; ++i) { |
| 897 |
axis = xaxes[i]; |
| 898 |
if (axis && axis.used) {
|
| 899 |
key = "x" + axis.n;
|
| 900 |
if (pos[key] == null && axis.n == 1) |
| 901 |
key = "x";
|
| 902 |
|
| 903 |
if (pos[key] != null) { |
| 904 |
res.left = axis.p2c(pos[key]); |
| 905 |
break;
|
| 906 |
} |
| 907 |
} |
| 908 |
} |
| 909 |
|
| 910 |
for (i = 0; i < yaxes.length; ++i) { |
| 911 |
axis = yaxes[i]; |
| 912 |
if (axis && axis.used) {
|
| 913 |
key = "y" + axis.n;
|
| 914 |
if (pos[key] == null && axis.n == 1) |
| 915 |
key = "y";
|
| 916 |
|
| 917 |
if (pos[key] != null) { |
| 918 |
res.top = axis.p2c(pos[key]); |
| 919 |
break;
|
| 920 |
} |
| 921 |
} |
| 922 |
} |
| 923 |
|
| 924 |
return res;
|
| 925 |
} |
| 926 |
|
| 927 |
function getOrCreateAxis(axes, number) { |
| 928 |
if (!axes[number - 1]) |
| 929 |
axes[number - 1] = {
|
| 930 |
n: number, // save the number for future reference |
| 931 |
direction: axes == xaxes ? "x" : "y", |
| 932 |
options: $.extend(true, {}, axes == xaxes ? options.xaxis : options.yaxis) |
| 933 |
}; |
| 934 |
|
| 935 |
return axes[number - 1]; |
| 936 |
} |
| 937 |
|
| 938 |
function fillInSeriesOptions() { |
| 939 |
|
| 940 |
var neededColors = series.length, maxIndex = -1, i; |
| 941 |
|
| 942 |
// Subtract the number of series that already have fixed colors or
|
| 943 |
// color indexes from the number that we still need to generate.
|
| 944 |
|
| 945 |
for (i = 0; i < series.length; ++i) { |
| 946 |
var sc = series[i].color;
|
| 947 |
if (sc != null) { |
| 948 |
neededColors--; |
| 949 |
if (typeof sc == "number" && sc > maxIndex) { |
| 950 |
maxIndex = sc; |
| 951 |
} |
| 952 |
} |
| 953 |
} |
| 954 |
|
| 955 |
// If any of the series have fixed color indexes, then we need to
|
| 956 |
// generate at least as many colors as the highest index.
|
| 957 |
|
| 958 |
if (neededColors <= maxIndex) {
|
| 959 |
neededColors = maxIndex + 1;
|
| 960 |
} |
| 961 |
|
| 962 |
// Generate all the colors, using first the option colors and then
|
| 963 |
// variations on those colors once they're exhausted.
|
| 964 |
|
| 965 |
var c, colors = [], colorPool = options.colors,
|
| 966 |
colorPoolSize = colorPool.length, variation = 0;
|
| 967 |
|
| 968 |
for (i = 0; i < neededColors; i++) { |
| 969 |
|
| 970 |
c = $.color.parse(colorPool[i % colorPoolSize] || "#666"); |
| 971 |
|
| 972 |
// Each time we exhaust the colors in the pool we adjust
|
| 973 |
// a scaling factor used to produce more variations on
|
| 974 |
// those colors. The factor alternates negative/positive
|
| 975 |
// to produce lighter/darker colors.
|
| 976 |
|
| 977 |
// Reset the variation after every few cycles, or else
|
| 978 |
// it will end up producing only white or black colors.
|
| 979 |
|
| 980 |
if (i % colorPoolSize == 0 && i) { |
| 981 |
if (variation >= 0) { |
| 982 |
if (variation < 0.5) { |
| 983 |
variation = -variation - 0.2;
|
| 984 |
} else variation = 0; |
| 985 |
} else variation = -variation;
|
| 986 |
} |
| 987 |
|
| 988 |
colors[i] = c.scale('rgb', 1 + variation); |
| 989 |
} |
| 990 |
|
| 991 |
// Finalize the series options, filling in their colors
|
| 992 |
|
| 993 |
var colori = 0, s; |
| 994 |
for (i = 0; i < series.length; ++i) { |
| 995 |
s = series[i]; |
| 996 |
|
| 997 |
// assign colors
|
| 998 |
if (s.color == null) { |
| 999 |
s.color = colors[colori].toString(); |
| 1000 |
++colori; |
| 1001 |
} |
| 1002 |
else if (typeof s.color == "number") |
| 1003 |
s.color = colors[s.color].toString(); |
| 1004 |
|
| 1005 |
// turn on lines automatically in case nothing is set
|
| 1006 |
if (s.lines.show == null) { |
| 1007 |
var v, show = true; |
| 1008 |
for (v in s) |
| 1009 |
if (s[v] && s[v].show) {
|
| 1010 |
show = false;
|
| 1011 |
break;
|
| 1012 |
} |
| 1013 |
if (show)
|
| 1014 |
s.lines.show = true;
|
| 1015 |
} |
| 1016 |
|
| 1017 |
// If nothing was provided for lines.zero, default it to match
|
| 1018 |
// lines.fill, since areas by default should extend to zero.
|
| 1019 |
|
| 1020 |
if (s.lines.zero == null) { |
| 1021 |
s.lines.zero = !!s.lines.fill; |
| 1022 |
} |
| 1023 |
|
| 1024 |
// setup axes
|
| 1025 |
s.xaxis = getOrCreateAxis(xaxes, axisNumber(s, "x"));
|
| 1026 |
s.yaxis = getOrCreateAxis(yaxes, axisNumber(s, "y"));
|
| 1027 |
} |
| 1028 |
} |
| 1029 |
|
| 1030 |
function processData() { |
| 1031 |
var topSentry = Number.POSITIVE_INFINITY,
|
| 1032 |
bottomSentry = Number.NEGATIVE_INFINITY, |
| 1033 |
fakeInfinity = Number.MAX_VALUE, |
| 1034 |
i, j, k, m, length, |
| 1035 |
s, points, ps, x, y, axis, val, f, p, |
| 1036 |
data, format; |
| 1037 |
|
| 1038 |
function updateAxis(axis, min, max) { |
| 1039 |
if (min < axis.datamin && min != -fakeInfinity)
|
| 1040 |
axis.datamin = min; |
| 1041 |
if (max > axis.datamax && max != fakeInfinity)
|
| 1042 |
axis.datamax = max; |
| 1043 |
} |
| 1044 |
|
| 1045 |
$.each(allAxes(), function (_, axis) { |
| 1046 |
// init axis
|
| 1047 |
axis.datamin = topSentry; |
| 1048 |
axis.datamax = bottomSentry; |
| 1049 |
axis.used = false;
|
| 1050 |
}); |
| 1051 |
|
| 1052 |
for (i = 0; i < series.length; ++i) { |
| 1053 |
s = series[i]; |
| 1054 |
s.datapoints = { points: [] };
|
| 1055 |
|
| 1056 |
executeHooks(hooks.processRawData, [ s, s.data, s.datapoints ]); |
| 1057 |
} |
| 1058 |
|
| 1059 |
// first pass: clean and copy data
|
| 1060 |
for (i = 0; i < series.length; ++i) { |
| 1061 |
s = series[i]; |
| 1062 |
|
| 1063 |
data = s.data; |
| 1064 |
format = s.datapoints.format; |
| 1065 |
|
| 1066 |
if (!format) {
|
| 1067 |
format = []; |
| 1068 |
// find out how to copy
|
| 1069 |
format.push({ x: true, number: true, required: true });
|
| 1070 |
format.push({ y: true, number: true, required: true });
|
| 1071 |
|
| 1072 |
if (s.bars.show || (s.lines.show && s.lines.fill)) {
|
| 1073 |
var autoscale = !!((s.bars.show && s.bars.zero) || (s.lines.show && s.lines.zero));
|
| 1074 |
format.push({ y: true, number: true, required: false, defaultValue: 0, autoscale: autoscale });
|
| 1075 |
if (s.bars.horizontal) {
|
| 1076 |
delete format[format.length - 1].y; |
| 1077 |
format[format.length - 1].x = true; |
| 1078 |
} |
| 1079 |
} |
| 1080 |
|
| 1081 |
s.datapoints.format = format; |
| 1082 |
} |
| 1083 |
|
| 1084 |
if (s.datapoints.pointsize != null) |
| 1085 |
continue; // already filled in |
| 1086 |
|
| 1087 |
s.datapoints.pointsize = format.length; |
| 1088 |
|
| 1089 |
ps = s.datapoints.pointsize; |
| 1090 |
points = s.datapoints.points; |
| 1091 |
|
| 1092 |
var insertSteps = s.lines.show && s.lines.steps;
|
| 1093 |
s.xaxis.used = s.yaxis.used = true;
|
| 1094 |
|
| 1095 |
for (j = k = 0; j < data.length; ++j, k += ps) { |
| 1096 |
p = data[j]; |
| 1097 |
|
| 1098 |
var nullify = p == null; |
| 1099 |
if (!nullify) {
|
| 1100 |
for (m = 0; m < ps; ++m) { |
| 1101 |
val = p[m]; |
| 1102 |
f = format[m]; |
| 1103 |
|
| 1104 |
if (f) {
|
| 1105 |
if (f.number && val != null) { |
| 1106 |
val = +val; // convert to number
|
| 1107 |
if (isNaN(val))
|
| 1108 |
val = null;
|
| 1109 |
else if (val == Infinity) |
| 1110 |
val = fakeInfinity; |
| 1111 |
else if (val == -Infinity) |
| 1112 |
val = -fakeInfinity; |
| 1113 |
} |
| 1114 |
|
| 1115 |
if (val == null) { |
| 1116 |
if (f.required)
|
| 1117 |
nullify = true;
|
| 1118 |
|
| 1119 |
if (f.defaultValue != null) |
| 1120 |
val = f.defaultValue; |
| 1121 |
} |
| 1122 |
} |
| 1123 |
|
| 1124 |
points[k + m] = val; |
| 1125 |
} |
| 1126 |
} |
| 1127 |
|
| 1128 |
if (nullify) {
|
| 1129 |
for (m = 0; m < ps; ++m) { |
| 1130 |
val = points[k + m]; |
| 1131 |
if (val != null) { |
| 1132 |
f = format[m]; |
| 1133 |
// extract min/max info
|
| 1134 |
if (f.autoscale) {
|
| 1135 |
if (f.x) {
|
| 1136 |
updateAxis(s.xaxis, val, val); |
| 1137 |
} |
| 1138 |
if (f.y) {
|
| 1139 |
updateAxis(s.yaxis, val, val); |
| 1140 |
} |
| 1141 |
} |
| 1142 |
} |
| 1143 |
points[k + m] = null;
|
| 1144 |
} |
| 1145 |
} |
| 1146 |
else {
|
| 1147 |
// a little bit of line specific stuff that
|
| 1148 |
// perhaps shouldn't be here, but lacking
|
| 1149 |
// better means...
|
| 1150 |
if (insertSteps && k > 0 |
| 1151 |
&& points[k - ps] != null
|
| 1152 |
&& points[k - ps] != points[k] |
| 1153 |
&& points[k - ps + 1] != points[k + 1]) { |
| 1154 |
// copy the point to make room for a middle point
|
| 1155 |
for (m = 0; m < ps; ++m) |
| 1156 |
points[k + ps + m] = points[k + m]; |
| 1157 |
|
| 1158 |
// middle point has same y
|
| 1159 |
points[k + 1] = points[k - ps + 1]; |
| 1160 |
|
| 1161 |
// we've added a point, better reflect that
|
| 1162 |
k += ps; |
| 1163 |
} |
| 1164 |
} |
| 1165 |
} |
| 1166 |
} |
| 1167 |
|
| 1168 |
// give the hooks a chance to run
|
| 1169 |
for (i = 0; i < series.length; ++i) { |
| 1170 |
s = series[i]; |
| 1171 |
|
| 1172 |
executeHooks(hooks.processDatapoints, [ s, s.datapoints]); |
| 1173 |
} |
| 1174 |
|
| 1175 |
// second pass: find datamax/datamin for auto-scaling
|
| 1176 |
for (i = 0; i < series.length; ++i) { |
| 1177 |
s = series[i]; |
| 1178 |
points = s.datapoints.points; |
| 1179 |
ps = s.datapoints.pointsize; |
| 1180 |
format = s.datapoints.format; |
| 1181 |
|
| 1182 |
var xmin = topSentry, ymin = topSentry,
|
| 1183 |
xmax = bottomSentry, ymax = bottomSentry; |
| 1184 |
|
| 1185 |
for (j = 0; j < points.length; j += ps) { |
| 1186 |
if (points[j] == null) |
| 1187 |
continue;
|
| 1188 |
|
| 1189 |
for (m = 0; m < ps; ++m) { |
| 1190 |
val = points[j + m]; |
| 1191 |
f = format[m]; |
| 1192 |
if (!f || f.autoscale === false || val == fakeInfinity || val == -fakeInfinity) |
| 1193 |
continue;
|
| 1194 |
|
| 1195 |
if (f.x) {
|
| 1196 |
if (val < xmin)
|
| 1197 |
xmin = val; |
| 1198 |
if (val > xmax)
|
| 1199 |
xmax = val; |
| 1200 |
} |
| 1201 |
if (f.y) {
|
| 1202 |
if (val < ymin)
|
| 1203 |
ymin = val; |
| 1204 |
if (val > ymax)
|
| 1205 |
ymax = val; |
| 1206 |
} |
| 1207 |
} |
| 1208 |
} |
| 1209 |
|
| 1210 |
if (s.bars.show) {
|
| 1211 |
// make sure we got room for the bar on the dancing floor
|
| 1212 |
var delta;
|
| 1213 |
|
| 1214 |
switch (s.bars.align) {
|
| 1215 |
case "left": |
| 1216 |
delta = 0;
|
| 1217 |
break;
|
| 1218 |
case "right": |
| 1219 |
delta = -s.bars.barWidth; |
| 1220 |
break;
|
| 1221 |
case "center": |
| 1222 |
delta = -s.bars.barWidth / 2;
|
| 1223 |
break;
|
| 1224 |
default:
|
| 1225 |
throw new Error("Invalid bar alignment: " + s.bars.align); |
| 1226 |
} |
| 1227 |
|
| 1228 |
if (s.bars.horizontal) {
|
| 1229 |
ymin += delta; |
| 1230 |
ymax += delta + s.bars.barWidth; |
| 1231 |
} |
| 1232 |
else {
|
| 1233 |
xmin += delta; |
| 1234 |
xmax += delta + s.bars.barWidth; |
| 1235 |
} |
| 1236 |
} |
| 1237 |
|
| 1238 |
updateAxis(s.xaxis, xmin, xmax); |
| 1239 |
updateAxis(s.yaxis, ymin, ymax); |
| 1240 |
} |
| 1241 |
|
| 1242 |
$.each(allAxes(), function (_, axis) { |
| 1243 |
if (axis.datamin == topSentry)
|
| 1244 |
axis.datamin = null;
|
| 1245 |
if (axis.datamax == bottomSentry)
|
| 1246 |
axis.datamax = null;
|
| 1247 |
}); |
| 1248 |
} |
| 1249 |
|
| 1250 |
function setupCanvases() { |
| 1251 |
|
| 1252 |
// Make sure the placeholder is clear of everything except canvases
|
| 1253 |
// from a previous plot in this container that we'll try to re-use.
|
| 1254 |
|
| 1255 |
placeholder.css("padding", 0) // padding messes up the positioning |
| 1256 |
.children(":not(.flot-base,.flot-overlay)").remove();
|
| 1257 |
|
| 1258 |
if (placeholder.css("position") == 'static') |
| 1259 |
placeholder.css("position", "relative"); // for positioning labels and overlay |
| 1260 |
|
| 1261 |
surface = new Canvas("flot-base", placeholder); |
| 1262 |
overlay = new Canvas("flot-overlay", placeholder); // overlay canvas for interactive features |
| 1263 |
|
| 1264 |
ctx = surface.context; |
| 1265 |
octx = overlay.context; |
| 1266 |
|
| 1267 |
// define which element we're listening for events on
|
| 1268 |
eventHolder = $(overlay.element).unbind();
|
| 1269 |
|
| 1270 |
// If we're re-using a plot object, shut down the old one
|
| 1271 |
|
| 1272 |
var existing = placeholder.data("plot"); |
| 1273 |
|
| 1274 |
if (existing) {
|
| 1275 |
existing.shutdown(); |
| 1276 |
overlay.clear(); |
| 1277 |
} |
| 1278 |
|
| 1279 |
// save in case we get replotted
|
| 1280 |
placeholder.data("plot", plot);
|
| 1281 |
} |
| 1282 |
|
| 1283 |
function bindEvents() { |
| 1284 |
// bind events
|
| 1285 |
if (options.grid.hoverable) {
|
| 1286 |
eventHolder.mousemove(onMouseMove); |
| 1287 |
|
| 1288 |
// Use bind, rather than .mouseleave, because we officially
|
| 1289 |
// still support jQuery 1.2.6, which doesn't define a shortcut
|
| 1290 |
// for mouseenter or mouseleave. This was a bug/oversight that
|
| 1291 |
// was fixed somewhere around 1.3.x. We can return to using
|
| 1292 |
// .mouseleave when we drop support for 1.2.6.
|
| 1293 |
|
| 1294 |
eventHolder.bind("mouseleave", onMouseLeave);
|
| 1295 |
} |
| 1296 |
|
| 1297 |
if (options.grid.clickable)
|
| 1298 |
eventHolder.click(onClick); |
| 1299 |
|
| 1300 |
executeHooks(hooks.bindEvents, [eventHolder]); |
| 1301 |
} |
| 1302 |
|
| 1303 |
function shutdown() { |
| 1304 |
if (redrawTimeout)
|
| 1305 |
clearTimeout(redrawTimeout); |
| 1306 |
|
| 1307 |
eventHolder.unbind("mousemove", onMouseMove);
|
| 1308 |
eventHolder.unbind("mouseleave", onMouseLeave);
|
| 1309 |
eventHolder.unbind("click", onClick);
|
| 1310 |
|
| 1311 |
executeHooks(hooks.shutdown, [eventHolder]); |
| 1312 |
} |
| 1313 |
|
| 1314 |
function setTransformationHelpers(axis) { |
| 1315 |
// set helper functions on the axis, assumes plot area
|
| 1316 |
// has been computed already
|
| 1317 |
|
| 1318 |
function identity(x) { return x; } |
| 1319 |
|
| 1320 |
var s, m, t = axis.options.transform || identity,
|
| 1321 |
it = axis.options.inverseTransform; |
| 1322 |
|
| 1323 |
// precompute how much the axis is scaling a point
|
| 1324 |
// in canvas space
|
| 1325 |
if (axis.direction == "x") { |
| 1326 |
s = axis.scale = plotWidth / Math.abs(t(axis.max) - t(axis.min)); |
| 1327 |
m = Math.min(t(axis.max), t(axis.min)); |
| 1328 |
} |
| 1329 |
else {
|
| 1330 |
s = axis.scale = plotHeight / Math.abs(t(axis.max) - t(axis.min)); |
| 1331 |
s = -s; |
| 1332 |
m = Math.max(t(axis.max), t(axis.min)); |
| 1333 |
} |
| 1334 |
|
| 1335 |
// data point to canvas coordinate
|
| 1336 |
if (t == identity) // slight optimization |
| 1337 |
axis.p2c = function (p) { return (p - m) * s; }; |
| 1338 |
else
|
| 1339 |
axis.p2c = function (p) { return (t(p) - m) * s; }; |
| 1340 |
// canvas coordinate to data point
|
| 1341 |
if (!it)
|
| 1342 |
axis.c2p = function (c) { return m + c / s; }; |
| 1343 |
else
|
| 1344 |
axis.c2p = function (c) { return it(m + c / s); }; |
| 1345 |
} |
| 1346 |
|
| 1347 |
function measureTickLabels(axis) { |
| 1348 |
|
| 1349 |
var opts = axis.options,
|
| 1350 |
ticks = axis.ticks || [], |
| 1351 |
labelWidth = opts.labelWidth || 0,
|
| 1352 |
labelHeight = opts.labelHeight || 0,
|
| 1353 |
maxWidth = labelWidth || axis.direction == "x" ? Math.floor(surface.width / (ticks.length || 1)) : null; |
| 1354 |
legacyStyles = axis.direction + "Axis " + axis.direction + axis.n + "Axis", |
| 1355 |
layer = "flot-" + axis.direction + "-axis flot-" + axis.direction + axis.n + "-axis " + legacyStyles, |
| 1356 |
font = opts.font || "flot-tick-label tickLabel";
|
| 1357 |
|
| 1358 |
for (var i = 0; i < ticks.length; ++i) { |
| 1359 |
|
| 1360 |
var t = ticks[i];
|
| 1361 |
|
| 1362 |
if (!t.label)
|
| 1363 |
continue;
|
| 1364 |
|
| 1365 |
var info = surface.getTextInfo(layer, t.label, font, null, maxWidth); |
| 1366 |
|
| 1367 |
labelWidth = Math.max(labelWidth, info.width); |
| 1368 |
labelHeight = Math.max(labelHeight, info.height); |
| 1369 |
} |
| 1370 |
|
| 1371 |
axis.labelWidth = opts.labelWidth || labelWidth; |
| 1372 |
axis.labelHeight = opts.labelHeight || labelHeight; |
| 1373 |
} |
| 1374 |
|
| 1375 |
function allocateAxisBoxFirstPhase(axis) { |
| 1376 |
// find the bounding box of the axis by looking at label
|
| 1377 |
// widths/heights and ticks, make room by diminishing the
|
| 1378 |
// plotOffset; this first phase only looks at one
|
| 1379 |
// dimension per axis, the other dimension depends on the
|
| 1380 |
// other axes so will have to wait
|
| 1381 |
|
| 1382 |
var lw = axis.labelWidth,
|
| 1383 |
lh = axis.labelHeight, |
| 1384 |
pos = axis.options.position, |
| 1385 |
tickLength = axis.options.tickLength, |
| 1386 |
axisMargin = options.grid.axisMargin, |
| 1387 |
padding = options.grid.labelMargin, |
| 1388 |
all = axis.direction == "x" ? xaxes : yaxes,
|
| 1389 |
index, innermost; |
| 1390 |
|
| 1391 |
// determine axis margin
|
| 1392 |
var samePosition = $.grep(all, function (a) { |
| 1393 |
return a && a.options.position == pos && a.reserveSpace;
|
| 1394 |
}); |
| 1395 |
if ($.inArray(axis, samePosition) == samePosition.length - 1) |
| 1396 |
axisMargin = 0; // outermost |
| 1397 |
|
| 1398 |
// determine tick length - if we're innermost, we can use "full"
|
| 1399 |
if (tickLength == null) { |
| 1400 |
var sameDirection = $.grep(all, function (a) { |
| 1401 |
return a && a.reserveSpace;
|
| 1402 |
}); |
| 1403 |
|
| 1404 |
innermost = $.inArray(axis, sameDirection) == 0; |
| 1405 |
if (innermost)
|
| 1406 |
tickLength = "full";
|
| 1407 |
else
|
| 1408 |
tickLength = 5;
|
| 1409 |
} |
| 1410 |
|
| 1411 |
if (!isNaN(+tickLength))
|
| 1412 |
padding += +tickLength; |
| 1413 |
|
| 1414 |
// compute box
|
| 1415 |
if (axis.direction == "x") { |
| 1416 |
lh += padding; |
| 1417 |
|
| 1418 |
if (pos == "bottom") { |
| 1419 |
plotOffset.bottom += lh + axisMargin; |
| 1420 |
axis.box = { top: surface.height - plotOffset.bottom, height: lh };
|
| 1421 |
} |
| 1422 |
else {
|
| 1423 |
axis.box = { top: plotOffset.top + axisMargin, height: lh };
|
| 1424 |
plotOffset.top += lh + axisMargin; |
| 1425 |
} |
| 1426 |
} |
| 1427 |
else {
|
| 1428 |
lw += padding; |
| 1429 |
|
| 1430 |
if (pos == "left") { |
| 1431 |
axis.box = { left: plotOffset.left + axisMargin, width: lw };
|
| 1432 |
plotOffset.left += lw + axisMargin; |
| 1433 |
} |
| 1434 |
else {
|
| 1435 |
plotOffset.right += lw + axisMargin; |
| 1436 |
axis.box = { left: surface.width - plotOffset.right, width: lw };
|
| 1437 |
} |
| 1438 |
} |
| 1439 |
|
| 1440 |
// save for future reference
|
| 1441 |
axis.position = pos; |
| 1442 |
axis.tickLength = tickLength; |
| 1443 |
axis.box.padding = padding; |
| 1444 |
axis.innermost = innermost; |
| 1445 |
} |
| 1446 |
|
| 1447 |
function allocateAxisBoxSecondPhase(axis) { |
| 1448 |
// now that all axis boxes have been placed in one
|
| 1449 |
// dimension, we can set the remaining dimension coordinates
|
| 1450 |
if (axis.direction == "x") { |
| 1451 |
axis.box.left = plotOffset.left - axis.labelWidth / 2;
|
| 1452 |
axis.box.width = surface.width - plotOffset.left - plotOffset.right + axis.labelWidth; |
| 1453 |
} |
| 1454 |
else {
|
| 1455 |
axis.box.top = plotOffset.top - axis.labelHeight / 2;
|
| 1456 |
axis.box.height = surface.height - plotOffset.bottom - plotOffset.top + axis.labelHeight; |
| 1457 |
} |
| 1458 |
} |
| 1459 |
|
| 1460 |
function adjustLayoutForThingsStickingOut() { |
| 1461 |
// possibly adjust plot offset to ensure everything stays
|
| 1462 |
// inside the canvas and isn't clipped off
|
| 1463 |
|
| 1464 |
var minMargin = options.grid.minBorderMargin,
|
| 1465 |
margins = { x: 0, y: 0 }, i, axis;
|
| 1466 |
|
| 1467 |
// check stuff from the plot (FIXME: this should just read
|
| 1468 |
// a value from the series, otherwise it's impossible to
|
| 1469 |
// customize)
|
| 1470 |
if (minMargin == null) { |
| 1471 |
minMargin = 0;
|
| 1472 |
for (i = 0; i < series.length; ++i) |
| 1473 |
minMargin = Math.max(minMargin, 2 * (series[i].points.radius + series[i].points.lineWidth/2)); |
| 1474 |
} |
| 1475 |
|
| 1476 |
margins.x = margins.y = Math.ceil(minMargin); |
| 1477 |
|
| 1478 |
// check axis labels, note we don't check the actual
|
| 1479 |
// labels but instead use the overall width/height to not
|
| 1480 |
// jump as much around with replots
|
| 1481 |
$.each(allAxes(), function (_, axis) { |
| 1482 |
var dir = axis.direction;
|
| 1483 |
if (axis.reserveSpace)
|
| 1484 |
margins[dir] = Math.ceil(Math.max(margins[dir], (dir == "x" ? axis.labelWidth : axis.labelHeight) / 2)); |
| 1485 |
}); |
| 1486 |
|
| 1487 |
plotOffset.left = Math.max(margins.x, plotOffset.left); |
| 1488 |
plotOffset.right = Math.max(margins.x, plotOffset.right); |
| 1489 |
plotOffset.top = Math.max(margins.y, plotOffset.top); |
| 1490 |
plotOffset.bottom = Math.max(margins.y, plotOffset.bottom); |
| 1491 |
} |
| 1492 |
|
| 1493 |
function setupGrid() { |
| 1494 |
var i, axes = allAxes(), showGrid = options.grid.show;
|
| 1495 |
|
| 1496 |
// Initialize the plot's offset from the edge of the canvas
|
| 1497 |
|
| 1498 |
for (var a in plotOffset) { |
| 1499 |
var margin = options.grid.margin || 0; |
| 1500 |
plotOffset[a] = typeof margin == "number" ? margin : margin[a] || 0; |
| 1501 |
} |
| 1502 |
|
| 1503 |
executeHooks(hooks.processOffset, [plotOffset]); |
| 1504 |
|
| 1505 |
// If the grid is visible, add its border width to the offset
|
| 1506 |
|
| 1507 |
for (var a in plotOffset) { |
| 1508 |
if(typeof(options.grid.borderWidth) == "object") { |
| 1509 |
plotOffset[a] += showGrid ? options.grid.borderWidth[a] : 0;
|
| 1510 |
} |
| 1511 |
else {
|
| 1512 |
plotOffset[a] += showGrid ? options.grid.borderWidth : 0;
|
| 1513 |
} |
| 1514 |
} |
| 1515 |
|
| 1516 |
// init axes
|
| 1517 |
$.each(axes, function (_, axis) { |
| 1518 |
axis.show = axis.options.show; |
| 1519 |
if (axis.show == null) |
| 1520 |
axis.show = axis.used; // by default an axis is visible if it's got data
|
| 1521 |
|
| 1522 |
axis.reserveSpace = axis.show || axis.options.reserveSpace; |
| 1523 |
|
| 1524 |
setRange(axis); |
| 1525 |
}); |
| 1526 |
|
| 1527 |
if (showGrid) {
|
| 1528 |
|
| 1529 |
var allocatedAxes = $.grep(axes, function (axis) { return axis.reserveSpace; }); |
| 1530 |
|
| 1531 |
$.each(allocatedAxes, function (_, axis) { |
| 1532 |
// make the ticks
|
| 1533 |
setupTickGeneration(axis); |
| 1534 |
setTicks(axis); |
| 1535 |
snapRangeToTicks(axis, axis.ticks); |
| 1536 |
// find labelWidth/Height for axis
|
| 1537 |
measureTickLabels(axis); |
| 1538 |
}); |
| 1539 |
|
| 1540 |
// with all dimensions calculated, we can compute the
|
| 1541 |
// axis bounding boxes, start from the outside
|
| 1542 |
// (reverse order)
|
| 1543 |
for (i = allocatedAxes.length - 1; i >= 0; --i) |
| 1544 |
allocateAxisBoxFirstPhase(allocatedAxes[i]); |
| 1545 |
|
| 1546 |
// make sure we've got enough space for things that
|
| 1547 |
// might stick out
|
| 1548 |
adjustLayoutForThingsStickingOut(); |
| 1549 |
|
| 1550 |
$.each(allocatedAxes, function (_, axis) { |
| 1551 |
allocateAxisBoxSecondPhase(axis); |
| 1552 |
}); |
| 1553 |
} |
| 1554 |
|
| 1555 |
plotWidth = surface.width - plotOffset.left - plotOffset.right; |
| 1556 |
plotHeight = surface.height - plotOffset.bottom - plotOffset.top; |
| 1557 |
|
| 1558 |
// now we got the proper plot dimensions, we can compute the scaling
|
| 1559 |
$.each(axes, function (_, axis) { |
| 1560 |
setTransformationHelpers(axis); |
| 1561 |
}); |
| 1562 |
|
| 1563 |
if (showGrid) {
|
| 1564 |
drawAxisLabels(); |
| 1565 |
} |
| 1566 |
|
| 1567 |
insertLegend(); |
| 1568 |
} |
| 1569 |
|
| 1570 |
function setRange(axis) { |
| 1571 |
var opts = axis.options,
|
| 1572 |
min = +(opts.min != null ? opts.min : axis.datamin),
|
| 1573 |
max = +(opts.max != null ? opts.max : axis.datamax),
|
| 1574 |
delta = max - min; |
| 1575 |
|
| 1576 |
if (delta == 0.0) { |
| 1577 |
// degenerate case
|
| 1578 |
var widen = max == 0 ? 1 : 0.01; |
| 1579 |
|
| 1580 |
if (opts.min == null) |
| 1581 |
min -= widen; |
| 1582 |
// always widen max if we couldn't widen min to ensure we
|
| 1583 |
// don't fall into min == max which doesn't work
|
| 1584 |
if (opts.max == null || opts.min != null) |
| 1585 |
max += widen; |
| 1586 |
} |
| 1587 |
else {
|
| 1588 |
// consider autoscaling
|
| 1589 |
var margin = opts.autoscaleMargin;
|
| 1590 |
if (margin != null) { |
| 1591 |
if (opts.min == null) { |
| 1592 |
min -= delta * margin; |
| 1593 |
// make sure we don't go below zero if all values
|
| 1594 |
// are positive
|
| 1595 |
if (min < 0 && axis.datamin != null && axis.datamin >= 0) |
| 1596 |
min = 0;
|
| 1597 |
} |
| 1598 |
if (opts.max == null) { |
| 1599 |
max += delta * margin; |
| 1600 |
if (max > 0 && axis.datamax != null && axis.datamax <= 0) |
| 1601 |
max = 0;
|
| 1602 |
} |
| 1603 |
} |
| 1604 |
} |
| 1605 |
axis.min = min; |
| 1606 |
axis.max = max; |
| 1607 |
} |
| 1608 |
|
| 1609 |
function setupTickGeneration(axis) { |
| 1610 |
var opts = axis.options;
|
| 1611 |
|
| 1612 |
// estimate number of ticks
|
| 1613 |
var noTicks;
|
| 1614 |
if (typeof opts.ticks == "number" && opts.ticks > 0) |
| 1615 |
noTicks = opts.ticks; |
| 1616 |
else
|
| 1617 |
// heuristic based on the model a*sqrt(x) fitted to
|
| 1618 |
// some data points that seemed reasonable
|
| 1619 |
noTicks = 0.3 * Math.sqrt(axis.direction == "x" ? surface.width : surface.height); |
| 1620 |
|
| 1621 |
var delta = (axis.max - axis.min) / noTicks,
|
| 1622 |
dec = -Math.floor(Math.log(delta) / Math.LN10), |
| 1623 |
maxDec = opts.tickDecimals; |
| 1624 |
|
| 1625 |
if (maxDec != null && dec > maxDec) { |
| 1626 |
dec = maxDec; |
| 1627 |
} |
| 1628 |
|
| 1629 |
var magn = Math.pow(10, -dec), |
| 1630 |
norm = delta / magn, // norm is between 1.0 and 10.0
|
| 1631 |
size; |
| 1632 |
|
| 1633 |
if (norm < 1.5) { |
| 1634 |
size = 1;
|
| 1635 |
} else if (norm < 3) { |
| 1636 |
size = 2;
|
| 1637 |
// special case for 2.5, requires an extra decimal
|
| 1638 |
if (norm > 2.25 && (maxDec == null || dec + 1 <= maxDec)) { |
| 1639 |
size = 2.5;
|
| 1640 |
++dec; |
| 1641 |
} |
| 1642 |
} else if (norm < 7.5) { |
| 1643 |
size = 5;
|
| 1644 |
} else {
|
| 1645 |
size = 10;
|
| 1646 |
} |
| 1647 |
|
| 1648 |
size *= magn; |
| 1649 |
|
| 1650 |
if (opts.minTickSize != null && size < opts.minTickSize) { |
| 1651 |
size = opts.minTickSize; |
| 1652 |
} |
| 1653 |
|
| 1654 |
axis.delta = delta; |
| 1655 |
axis.tickDecimals = Math.max(0, maxDec != null ? maxDec : dec); |
| 1656 |
axis.tickSize = opts.tickSize || size; |
| 1657 |
|
| 1658 |
// Time mode was moved to a plug-in in 0.8, but since so many people use this
|
| 1659 |
// we'll add an especially friendly make sure they remembered to include it.
|
| 1660 |
|
| 1661 |
if (opts.mode == "time" && !axis.tickGenerator) { |
| 1662 |
throw new Error("Time mode requires the flot.time plugin."); |
| 1663 |
} |
| 1664 |
|
| 1665 |
// Flot supports base-10 axes; any other mode else is handled by a plug-in,
|
| 1666 |
// like flot.time.js.
|
| 1667 |
|
| 1668 |
if (!axis.tickGenerator) {
|
| 1669 |
|
| 1670 |
axis.tickGenerator = function (axis) { |
| 1671 |
|
| 1672 |
var ticks = [],
|
| 1673 |
start = floorInBase(axis.min, axis.tickSize), |
| 1674 |
i = 0,
|
| 1675 |
v = Number.NaN,
|
| 1676 |
prev; |
| 1677 |
|
| 1678 |
do {
|
| 1679 |
prev = v; |
| 1680 |
v = start + i * axis.tickSize; |
| 1681 |
ticks.push(v); |
| 1682 |
++i; |
| 1683 |
} while (v < axis.max && v != prev);
|
| 1684 |
return ticks;
|
| 1685 |
}; |
| 1686 |
|
| 1687 |
axis.tickFormatter = function (value, axis) { |
| 1688 |
|
| 1689 |
var factor = axis.tickDecimals ? Math.pow(10, axis.tickDecimals) : 1; |
| 1690 |
var formatted = "" + Math.round(value * factor) / factor; |
| 1691 |
|
| 1692 |
// If tickDecimals was specified, ensure that we have exactly that
|
| 1693 |
// much precision; otherwise default to the value's own precision.
|
| 1694 |
|
| 1695 |
if (axis.tickDecimals != null) { |
| 1696 |
var decimal = formatted.indexOf("."); |
| 1697 |
var precision = decimal == -1 ? 0 : formatted.length - decimal - 1; |
| 1698 |
if (precision < axis.tickDecimals) {
|
| 1699 |
return (precision ? formatted : formatted + ".") + ("" + factor).substr(1, axis.tickDecimals - precision); |
| 1700 |
} |
| 1701 |
} |
| 1702 |
|
| 1703 |
return formatted;
|
| 1704 |
}; |
| 1705 |
} |
| 1706 |
|
| 1707 |
if ($.isFunction(opts.tickFormatter)) |
| 1708 |
axis.tickFormatter = function (v, axis) { return "" + opts.tickFormatter(v, axis); }; |
| 1709 |
|
| 1710 |
if (opts.alignTicksWithAxis != null) { |
| 1711 |
var otherAxis = (axis.direction == "x" ? xaxes : yaxes)[opts.alignTicksWithAxis - 1]; |
| 1712 |
if (otherAxis && otherAxis.used && otherAxis != axis) {
|
| 1713 |
// consider snapping min/max to outermost nice ticks
|
| 1714 |
var niceTicks = axis.tickGenerator(axis);
|
| 1715 |
if (niceTicks.length > 0) { |
| 1716 |
if (opts.min == null) |
| 1717 |
axis.min = Math.min(axis.min, niceTicks[0]);
|
| 1718 |
if (opts.max == null && niceTicks.length > 1) |
| 1719 |
axis.max = Math.max(axis.max, niceTicks[niceTicks.length - 1]);
|
| 1720 |
} |
| 1721 |
|
| 1722 |
axis.tickGenerator = function (axis) { |
| 1723 |
// copy ticks, scaled to this axis
|
| 1724 |
var ticks = [], v, i;
|
| 1725 |
for (i = 0; i < otherAxis.ticks.length; ++i) { |
| 1726 |
v = (otherAxis.ticks[i].v - otherAxis.min) / (otherAxis.max - otherAxis.min); |
| 1727 |
v = axis.min + v * (axis.max - axis.min); |
| 1728 |
ticks.push(v); |
| 1729 |
} |
| 1730 |
return ticks;
|
| 1731 |
}; |
| 1732 |
|
| 1733 |
// we might need an extra decimal since forced
|
| 1734 |
// ticks don't necessarily fit naturally
|
| 1735 |
if (!axis.mode && opts.tickDecimals == null) { |
| 1736 |
var extraDec = Math.max(0, -Math.floor(Math.log(axis.delta) / Math.LN10) + 1), |
| 1737 |
ts = axis.tickGenerator(axis); |
| 1738 |
|
| 1739 |
// only proceed if the tick interval rounded
|
| 1740 |
// with an extra decimal doesn't give us a
|
| 1741 |
// zero at end
|
| 1742 |
if (!(ts.length > 1 && /\..*0$/.test((ts[1] - ts[0]).toFixed(extraDec)))) |
| 1743 |
axis.tickDecimals = extraDec; |
| 1744 |
} |
| 1745 |
} |
| 1746 |
} |
| 1747 |
} |
| 1748 |
|
| 1749 |
function setTicks(axis) { |
| 1750 |
var oticks = axis.options.ticks, ticks = [];
|
| 1751 |
if (oticks == null || (typeof oticks == "number" && oticks > 0)) |
| 1752 |
ticks = axis.tickGenerator(axis); |
| 1753 |
else if (oticks) { |
| 1754 |
if ($.isFunction(oticks)) |
| 1755 |
// generate the ticks
|
| 1756 |
ticks = oticks(axis); |
| 1757 |
else
|
| 1758 |
ticks = oticks; |
| 1759 |
} |
| 1760 |
|
| 1761 |
// clean up/labelify the supplied ticks, copy them over
|
| 1762 |
var i, v;
|
| 1763 |
axis.ticks = []; |
| 1764 |
for (i = 0; i < ticks.length; ++i) { |
| 1765 |
var label = null; |
| 1766 |
var t = ticks[i];
|
| 1767 |
if (typeof t == "object") { |
| 1768 |
v = +t[0];
|
| 1769 |
if (t.length > 1) |
| 1770 |
label = t[1];
|
| 1771 |
} |
| 1772 |
else
|
| 1773 |
v = +t; |
| 1774 |
if (label == null) |
| 1775 |
label = axis.tickFormatter(v, axis); |
| 1776 |
if (!isNaN(v))
|
| 1777 |
axis.ticks.push({ v: v, label: label });
|
| 1778 |
} |
| 1779 |
} |
| 1780 |
|
| 1781 |
function snapRangeToTicks(axis, ticks) { |
| 1782 |
if (axis.options.autoscaleMargin && ticks.length > 0) { |
| 1783 |
// snap to ticks
|
| 1784 |
if (axis.options.min == null) |
| 1785 |
axis.min = Math.min(axis.min, ticks[0].v);
|
| 1786 |
if (axis.options.max == null && ticks.length > 1) |
| 1787 |
axis.max = Math.max(axis.max, ticks[ticks.length - 1].v);
|
| 1788 |
} |
| 1789 |
} |
| 1790 |
|
| 1791 |
function draw() { |
| 1792 |
|
| 1793 |
surface.clear(); |
| 1794 |
|
| 1795 |
executeHooks(hooks.drawBackground, [ctx]); |
| 1796 |
|
| 1797 |
var grid = options.grid;
|
| 1798 |
|
| 1799 |
// draw background, if any
|
| 1800 |
if (grid.show && grid.backgroundColor)
|
| 1801 |
drawBackground(); |
| 1802 |
|
| 1803 |
if (grid.show && !grid.aboveData) {
|
| 1804 |
drawGrid(); |
| 1805 |
} |
| 1806 |
|
| 1807 |
for (var i = 0; i < series.length; ++i) { |
| 1808 |
executeHooks(hooks.drawSeries, [ctx, series[i]]); |
| 1809 |
drawSeries(series[i]); |
| 1810 |
} |
| 1811 |
|
| 1812 |
executeHooks(hooks.draw, [ctx]); |
| 1813 |
|
| 1814 |
if (grid.show && grid.aboveData) {
|
| 1815 |
drawGrid(); |
| 1816 |
} |
| 1817 |
|
| 1818 |
surface.render(); |
| 1819 |
|
| 1820 |
// A draw implies that either the axes or data have changed, so we
|
| 1821 |
// should probably update the overlay highlights as well.
|
| 1822 |
|
| 1823 |
triggerRedrawOverlay(); |
| 1824 |
} |
| 1825 |
|
| 1826 |
function extractRange(ranges, coord) { |
| 1827 |
var axis, from, to, key, axes = allAxes();
|
| 1828 |
|
| 1829 |
for (var i = 0; i < axes.length; ++i) { |
| 1830 |
axis = axes[i]; |
| 1831 |
if (axis.direction == coord) {
|
| 1832 |
key = coord + axis.n + "axis";
|
| 1833 |
if (!ranges[key] && axis.n == 1) |
| 1834 |
key = coord + "axis"; // support x1axis as xaxis |
| 1835 |
if (ranges[key]) {
|
| 1836 |
from = ranges[key].from; |
| 1837 |
to = ranges[key].to; |
| 1838 |
break;
|
| 1839 |
} |
| 1840 |
} |
| 1841 |
} |
| 1842 |
|
| 1843 |
// backwards-compat stuff - to be removed in future
|
| 1844 |
if (!ranges[key]) {
|
| 1845 |
axis = coord == "x" ? xaxes[0] : yaxes[0]; |
| 1846 |
from = ranges[coord + "1"];
|
| 1847 |
to = ranges[coord + "2"];
|
| 1848 |
} |
| 1849 |
|
| 1850 |
// auto-reverse as an added bonus
|
| 1851 |
if (from != null && to != null && from > to) { |
| 1852 |
var tmp = from;
|
| 1853 |
from = to; |
| 1854 |
to = tmp; |
| 1855 |
} |
| 1856 |
|
| 1857 |
return { from: from, to: to, axis: axis }; |
| 1858 |
} |
| 1859 |
|
| 1860 |
function drawBackground() { |
| 1861 |
ctx.save(); |
| 1862 |
ctx.translate(plotOffset.left, plotOffset.top); |
| 1863 |
|
| 1864 |
ctx.fillStyle = getColorOrGradient(options.grid.backgroundColor, plotHeight, 0, "rgba(255, 255, 255, 0)"); |
| 1865 |
ctx.fillRect(0, 0, plotWidth, plotHeight); |
| 1866 |
ctx.restore(); |
| 1867 |
} |
| 1868 |
|
| 1869 |
function drawGrid() { |
| 1870 |
var i, axes, bw, bc;
|
| 1871 |
|
| 1872 |
ctx.save(); |
| 1873 |
ctx.translate(plotOffset.left, plotOffset.top); |
| 1874 |
|
| 1875 |
// draw markings
|
| 1876 |
var markings = options.grid.markings;
|
| 1877 |
if (markings) {
|
| 1878 |
if ($.isFunction(markings)) { |
| 1879 |
axes = plot.getAxes(); |
| 1880 |
// xmin etc. is backwards compatibility, to be
|
| 1881 |
// removed in the future
|
| 1882 |
axes.xmin = axes.xaxis.min; |
| 1883 |
axes.xmax = axes.xaxis.max; |
| 1884 |
axes.ymin = axes.yaxis.min; |
| 1885 |
axes.ymax = axes.yaxis.max; |
| 1886 |
|
| 1887 |
markings = markings(axes); |
| 1888 |
} |
| 1889 |
|
| 1890 |
for (i = 0; i < markings.length; ++i) { |
| 1891 |
var m = markings[i],
|
| 1892 |
xrange = extractRange(m, "x"),
|
| 1893 |
yrange = extractRange(m, "y");
|
| 1894 |
|
| 1895 |
// fill in missing
|
| 1896 |
if (xrange.from == null) |
| 1897 |
xrange.from = xrange.axis.min; |
| 1898 |
if (xrange.to == null) |
| 1899 |
xrange.to = xrange.axis.max; |
| 1900 |
if (yrange.from == null) |
| 1901 |
yrange.from = yrange.axis.min; |
| 1902 |
if (yrange.to == null) |
| 1903 |
yrange.to = yrange.axis.max; |
| 1904 |
|
| 1905 |
// clip
|
| 1906 |
if (xrange.to < xrange.axis.min || xrange.from > xrange.axis.max ||
|
| 1907 |
yrange.to < yrange.axis.min || yrange.from > yrange.axis.max) |
| 1908 |
continue;
|
| 1909 |
|
| 1910 |
xrange.from = Math.max(xrange.from, xrange.axis.min); |
| 1911 |
xrange.to = Math.min(xrange.to, xrange.axis.max); |
| 1912 |
yrange.from = Math.max(yrange.from, yrange.axis.min); |
| 1913 |
yrange.to = Math.min(yrange.to, yrange.axis.max); |
| 1914 |
|
| 1915 |
if (xrange.from == xrange.to && yrange.from == yrange.to)
|
| 1916 |
continue;
|
| 1917 |
|
| 1918 |
// then draw
|
| 1919 |
xrange.from = xrange.axis.p2c(xrange.from); |
| 1920 |
xrange.to = xrange.axis.p2c(xrange.to); |
| 1921 |
yrange.from = yrange.axis.p2c(yrange.from); |
| 1922 |
yrange.to = yrange.axis.p2c(yrange.to); |
| 1923 |
|
| 1924 |
if (xrange.from == xrange.to || yrange.from == yrange.to) {
|
| 1925 |
// draw line
|
| 1926 |
ctx.beginPath(); |
| 1927 |
ctx.strokeStyle = m.color || options.grid.markingsColor; |
| 1928 |
ctx.lineWidth = m.lineWidth || options.grid.markingsLineWidth; |
| 1929 |
ctx.moveTo(xrange.from, yrange.from); |
| 1930 |
ctx.lineTo(xrange.to, yrange.to); |
| 1931 |
ctx.stroke(); |
| 1932 |
} |
| 1933 |
else {
|
| 1934 |
// fill area
|
| 1935 |
ctx.fillStyle = m.color || options.grid.markingsColor; |
| 1936 |
ctx.fillRect(xrange.from, yrange.to, |
| 1937 |
xrange.to - xrange.from, |
| 1938 |
yrange.from - yrange.to); |
| 1939 |
} |
| 1940 |
} |
| 1941 |
} |
| 1942 |
|
| 1943 |
// draw the ticks
|
| 1944 |
axes = allAxes(); |
| 1945 |
bw = options.grid.borderWidth; |
| 1946 |
|
| 1947 |
for (var j = 0; j < axes.length; ++j) { |
| 1948 |
var axis = axes[j], box = axis.box,
|
| 1949 |
t = axis.tickLength, x, y, xoff, yoff; |
| 1950 |
if (!axis.show || axis.ticks.length == 0) |
| 1951 |
continue;
|
| 1952 |
|
| 1953 |
ctx.lineWidth = 1;
|
| 1954 |
|
| 1955 |
// find the edges
|
| 1956 |
if (axis.direction == "x") { |
| 1957 |
x = 0;
|
| 1958 |
if (t == "full") |
| 1959 |
y = (axis.position == "top" ? 0 : plotHeight); |
| 1960 |
else
|
| 1961 |
y = box.top - plotOffset.top + (axis.position == "top" ? box.height : 0); |
| 1962 |
} |
| 1963 |
else {
|
| 1964 |
y = 0;
|
| 1965 |
if (t == "full") |
| 1966 |
x = (axis.position == "left" ? 0 : plotWidth); |
| 1967 |
else
|
| 1968 |
x = box.left - plotOffset.left + (axis.position == "left" ? box.width : 0); |
| 1969 |
} |
| 1970 |
|
| 1971 |
// draw tick bar
|
| 1972 |
if (!axis.innermost) {
|
| 1973 |
ctx.strokeStyle = axis.options.color; |
| 1974 |
ctx.beginPath(); |
| 1975 |
xoff = yoff = 0;
|
| 1976 |
if (axis.direction == "x") |
| 1977 |
xoff = plotWidth + 1;
|
| 1978 |
else
|
| 1979 |
yoff = plotHeight + 1;
|
| 1980 |
|
| 1981 |
if (ctx.lineWidth == 1) { |
| 1982 |
if (axis.direction == "x") { |
| 1983 |
y = Math.floor(y) + 0.5;
|
| 1984 |
} else {
|
| 1985 |
x = Math.floor(x) + 0.5;
|
| 1986 |
} |
| 1987 |
} |
| 1988 |
|
| 1989 |
ctx.moveTo(x, y); |
| 1990 |
ctx.lineTo(x + xoff, y + yoff); |
| 1991 |
ctx.stroke(); |
| 1992 |
} |
| 1993 |
|
| 1994 |
// draw ticks
|
| 1995 |
|
| 1996 |
ctx.strokeStyle = axis.options.tickColor; |
| 1997 |
|
| 1998 |
ctx.beginPath(); |
| 1999 |
for (i = 0; i < axis.ticks.length; ++i) { |
| 2000 |
var v = axis.ticks[i].v;
|
| 2001 |
|
| 2002 |
xoff = yoff = 0;
|
| 2003 |
|
| 2004 |
if (isNaN(v) || v < axis.min || v > axis.max
|
| 2005 |
// skip those lying on the axes if we got a border
|
| 2006 |
|| (t == "full"
|
| 2007 |
&& ((typeof bw == "object" && bw[axis.position] > 0) || bw > 0) |
| 2008 |
&& (v == axis.min || v == axis.max))) |
| 2009 |
continue;
|
| 2010 |
|
| 2011 |
if (axis.direction == "x") { |
| 2012 |
x = axis.p2c(v); |
| 2013 |
yoff = t == "full" ? -plotHeight : t;
|
| 2014 |
|
| 2015 |
if (axis.position == "top") |
| 2016 |
yoff = -yoff; |
| 2017 |
} |
| 2018 |
else {
|
| 2019 |
y = axis.p2c(v); |
| 2020 |
xoff = t == "full" ? -plotWidth : t;
|
| 2021 |
|
| 2022 |
if (axis.position == "left") |
| 2023 |
xoff = -xoff; |
| 2024 |
} |
| 2025 |
|
| 2026 |
if (ctx.lineWidth == 1) { |
| 2027 |
if (axis.direction == "x") |
| 2028 |
x = Math.floor(x) + 0.5;
|
| 2029 |
else
|
| 2030 |
y = Math.floor(y) + 0.5;
|
| 2031 |
} |
| 2032 |
|
| 2033 |
ctx.moveTo(x, y); |
| 2034 |
ctx.lineTo(x + xoff, y + yoff); |
| 2035 |
} |
| 2036 |
|
| 2037 |
ctx.stroke(); |
| 2038 |
} |
| 2039 |
|
| 2040 |
|
| 2041 |
// draw border
|
| 2042 |
if (bw) {
|
| 2043 |
// If either borderWidth or borderColor is an object, then draw the border
|
| 2044 |
// line by line instead of as one rectangle
|
| 2045 |
bc = options.grid.borderColor; |
| 2046 |
if(typeof bw == "object" || typeof bc == "object") { |
| 2047 |
if (typeof bw !== "object") { |
| 2048 |
bw = {top: bw, right: bw, bottom: bw, left: bw};
|
| 2049 |
} |
| 2050 |
if (typeof bc !== "object") { |
| 2051 |
bc = {top: bc, right: bc, bottom: bc, left: bc};
|
| 2052 |
} |
| 2053 |
|
| 2054 |
if (bw.top > 0) { |
| 2055 |
ctx.strokeStyle = bc.top; |
| 2056 |
ctx.lineWidth = bw.top; |
| 2057 |
ctx.beginPath(); |
| 2058 |
ctx.moveTo(0 - bw.left, 0 - bw.top/2); |
| 2059 |
ctx.lineTo(plotWidth, 0 - bw.top/2); |
| 2060 |
ctx.stroke(); |
| 2061 |
} |
| 2062 |
|
| 2063 |
if (bw.right > 0) { |
| 2064 |
ctx.strokeStyle = bc.right; |
| 2065 |
ctx.lineWidth = bw.right; |
| 2066 |
ctx.beginPath(); |
| 2067 |
ctx.moveTo(plotWidth + bw.right / 2, 0 - bw.top); |
| 2068 |
ctx.lineTo(plotWidth + bw.right / 2, plotHeight);
|
| 2069 |
ctx.stroke(); |
| 2070 |
} |
| 2071 |
|
| 2072 |
if (bw.bottom > 0) { |
| 2073 |
ctx.strokeStyle = bc.bottom; |
| 2074 |
ctx.lineWidth = bw.bottom; |
| 2075 |
ctx.beginPath(); |
| 2076 |
ctx.moveTo(plotWidth + bw.right, plotHeight + bw.bottom / 2);
|
| 2077 |
ctx.lineTo(0, plotHeight + bw.bottom / 2); |
| 2078 |
ctx.stroke(); |
| 2079 |
} |
| 2080 |
|
| 2081 |
if (bw.left > 0) { |
| 2082 |
ctx.strokeStyle = bc.left; |
| 2083 |
ctx.lineWidth = bw.left; |
| 2084 |
ctx.beginPath(); |
| 2085 |
ctx.moveTo(0 - bw.left/2, plotHeight + bw.bottom); |
| 2086 |
ctx.lineTo(0- bw.left/2, 0); |
| 2087 |
ctx.stroke(); |
| 2088 |
} |
| 2089 |
} |
| 2090 |
else {
|
| 2091 |
ctx.lineWidth = bw; |
| 2092 |
ctx.strokeStyle = options.grid.borderColor; |
| 2093 |
ctx.strokeRect(-bw/2, -bw/2, plotWidth + bw, plotHeight + bw); |
| 2094 |
} |
| 2095 |
} |
| 2096 |
|
| 2097 |
ctx.restore(); |
| 2098 |
} |
| 2099 |
|
| 2100 |
function drawAxisLabels() { |
| 2101 |
|
| 2102 |
$.each(allAxes(), function (_, axis) { |
| 2103 |
if (!axis.show || axis.ticks.length == 0) |
| 2104 |
return;
|
| 2105 |
|
| 2106 |
var box = axis.box,
|
| 2107 |
legacyStyles = axis.direction + "Axis " + axis.direction + axis.n + "Axis", |
| 2108 |
layer = "flot-" + axis.direction + "-axis flot-" + axis.direction + axis.n + "-axis " + legacyStyles, |
| 2109 |
font = axis.options.font || "flot-tick-label tickLabel",
|
| 2110 |
tick, x, y, halign, valign; |
| 2111 |
|
| 2112 |
surface.removeText(layer); |
| 2113 |
|
| 2114 |
for (var i = 0; i < axis.ticks.length; ++i) { |
| 2115 |
|
| 2116 |
tick = axis.ticks[i]; |
| 2117 |
if (!tick.label || tick.v < axis.min || tick.v > axis.max)
|
| 2118 |
continue;
|
| 2119 |
|
| 2120 |
if (axis.direction == "x") { |
| 2121 |
halign = "center";
|
| 2122 |
x = plotOffset.left + axis.p2c(tick.v); |
| 2123 |
if (axis.position == "bottom") { |
| 2124 |
y = box.top + box.padding; |
| 2125 |
} else {
|
| 2126 |
y = box.top + box.height - box.padding; |
| 2127 |
valign = "bottom";
|
| 2128 |
} |
| 2129 |
} else {
|
| 2130 |
valign = "middle";
|
| 2131 |
y = plotOffset.top + axis.p2c(tick.v); |
| 2132 |
if (axis.position == "left") { |
| 2133 |
x = box.left + box.width - box.padding; |
| 2134 |
halign = "right";
|
| 2135 |
} else {
|
| 2136 |
x = box.left + box.padding; |
| 2137 |
} |
| 2138 |
} |
| 2139 |
|
| 2140 |
surface.addText(layer, x, y, tick.label, font, null, null, halign, valign); |
| 2141 |
} |
| 2142 |
}); |
| 2143 |
} |
| 2144 |
|
| 2145 |
function drawSeries(series) { |
| 2146 |
if (series.lines.show)
|
| 2147 |
drawSeriesLines(series); |
| 2148 |
if (series.bars.show)
|
| 2149 |
drawSeriesBars(series); |
| 2150 |
if (series.points.show)
|
| 2151 |
drawSeriesPoints(series); |
| 2152 |
} |
| 2153 |
|
| 2154 |
function drawSeriesLines(series) { |
| 2155 |
function plotLine(datapoints, xoffset, yoffset, axisx, axisy) { |
| 2156 |
var points = datapoints.points,
|
| 2157 |
ps = datapoints.pointsize, |
| 2158 |
prevx = null, prevy = null; |
| 2159 |
|
| 2160 |
ctx.beginPath(); |
| 2161 |
for (var i = ps; i < points.length; i += ps) { |
| 2162 |
var x1 = points[i - ps], y1 = points[i - ps + 1], |
| 2163 |
x2 = points[i], y2 = points[i + 1];
|
| 2164 |
|
| 2165 |
if (x1 == null || x2 == null) |
| 2166 |
continue;
|
| 2167 |
|
| 2168 |
// clip with ymin
|
| 2169 |
if (y1 <= y2 && y1 < axisy.min) {
|
| 2170 |
if (y2 < axisy.min)
|
| 2171 |
continue; // line segment is outside |
| 2172 |
// compute new intersection point
|
| 2173 |
x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1; |
| 2174 |
y1 = axisy.min; |
| 2175 |
} |
| 2176 |
else if (y2 <= y1 && y2 < axisy.min) { |
| 2177 |
if (y1 < axisy.min)
|
| 2178 |
continue;
|
| 2179 |
x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1; |
| 2180 |
y2 = axisy.min; |
| 2181 |
} |
| 2182 |
|
| 2183 |
// clip with ymax
|
| 2184 |
if (y1 >= y2 && y1 > axisy.max) {
|
| 2185 |
if (y2 > axisy.max)
|
| 2186 |
continue;
|
| 2187 |
x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1; |
| 2188 |
y1 = axisy.max; |
| 2189 |
} |
| 2190 |
else if (y2 >= y1 && y2 > axisy.max) { |
| 2191 |
if (y1 > axisy.max)
|
| 2192 |
continue;
|
| 2193 |
x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1; |
| 2194 |
y2 = axisy.max; |
| 2195 |
} |
| 2196 |
|
| 2197 |
// clip with xmin
|
| 2198 |
if (x1 <= x2 && x1 < axisx.min) {
|
| 2199 |
if (x2 < axisx.min)
|
| 2200 |
continue;
|
| 2201 |
y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1; |
| 2202 |
x1 = axisx.min; |
| 2203 |
} |
| 2204 |
else if (x2 <= x1 && x2 < axisx.min) { |
| 2205 |
if (x1 < axisx.min)
|
| 2206 |
continue;
|
| 2207 |
y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1; |
| 2208 |
x2 = axisx.min; |
| 2209 |
} |
| 2210 |
|
| 2211 |
// clip with xmax
|
| 2212 |
if (x1 >= x2 && x1 > axisx.max) {
|
| 2213 |
if (x2 > axisx.max)
|
| 2214 |
continue;
|
| 2215 |
y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1; |
| 2216 |
x1 = axisx.max; |
| 2217 |
} |
| 2218 |
else if (x2 >= x1 && x2 > axisx.max) { |
| 2219 |
if (x1 > axisx.max)
|
| 2220 |
continue;
|
| 2221 |
y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1; |
| 2222 |
x2 = axisx.max; |
| 2223 |
} |
| 2224 |
|
| 2225 |
if (x1 != prevx || y1 != prevy)
|
| 2226 |
ctx.moveTo(axisx.p2c(x1) + xoffset, axisy.p2c(y1) + yoffset); |
| 2227 |
|
| 2228 |
prevx = x2; |
| 2229 |
prevy = y2; |
| 2230 |
ctx.lineTo(axisx.p2c(x2) + xoffset, axisy.p2c(y2) + yoffset); |
| 2231 |
} |
| 2232 |
ctx.stroke(); |
| 2233 |
} |
| 2234 |
|
| 2235 |
function plotLineArea(datapoints, axisx, axisy) { |
| 2236 |
var points = datapoints.points,
|
| 2237 |
ps = datapoints.pointsize, |
| 2238 |
bottom = Math.min(Math.max(0, axisy.min), axisy.max),
|
| 2239 |
i = 0, top, areaOpen = false, |
| 2240 |
ypos = 1, segmentStart = 0, segmentEnd = 0; |
| 2241 |
|
| 2242 |
// we process each segment in two turns, first forward
|
| 2243 |
// direction to sketch out top, then once we hit the
|
| 2244 |
// end we go backwards to sketch the bottom
|
| 2245 |
while (true) { |
| 2246 |
if (ps > 0 && i > points.length + ps) |
| 2247 |
break;
|
| 2248 |
|
| 2249 |
i += ps; // ps is negative if going backwards
|
| 2250 |
|
| 2251 |
var x1 = points[i - ps],
|
| 2252 |
y1 = points[i - ps + ypos], |
| 2253 |
x2 = points[i], y2 = points[i + ypos]; |
| 2254 |
|
| 2255 |
if (areaOpen) {
|
| 2256 |
if (ps > 0 && x1 != null && x2 == null) { |
| 2257 |
// at turning point
|
| 2258 |
segmentEnd = i; |
| 2259 |
ps = -ps; |
| 2260 |
ypos = 2;
|
| 2261 |
continue;
|
| 2262 |
} |
| 2263 |
|
| 2264 |
if (ps < 0 && i == segmentStart + ps) { |
| 2265 |
// done with the reverse sweep
|
| 2266 |
ctx.fill(); |
| 2267 |
areaOpen = false;
|
| 2268 |
ps = -ps; |
| 2269 |
ypos = 1;
|
| 2270 |
i = segmentStart = segmentEnd + ps; |
| 2271 |
continue;
|
| 2272 |
} |
| 2273 |
} |
| 2274 |
|
| 2275 |
if (x1 == null || x2 == null) |
| 2276 |
continue;
|
| 2277 |
|
| 2278 |
// clip x values
|
| 2279 |
|
| 2280 |
// clip with xmin
|
| 2281 |
if (x1 <= x2 && x1 < axisx.min) {
|
| 2282 |
if (x2 < axisx.min)
|
| 2283 |
continue;
|
| 2284 |
y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1; |
| 2285 |
x1 = axisx.min; |
| 2286 |
} |
| 2287 |
else if (x2 <= x1 && x2 < axisx.min) { |
| 2288 |
if (x1 < axisx.min)
|
| 2289 |
continue;
|
| 2290 |
y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1; |
| 2291 |
x2 = axisx.min; |
| 2292 |
} |
| 2293 |
|
| 2294 |
// clip with xmax
|
| 2295 |
if (x1 >= x2 && x1 > axisx.max) {
|
| 2296 |
if (x2 > axisx.max)
|
| 2297 |
continue;
|
| 2298 |
y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1; |
| 2299 |
x1 = axisx.max; |
| 2300 |
} |
| 2301 |
else if (x2 >= x1 && x2 > axisx.max) { |
| 2302 |
if (x1 > axisx.max)
|
| 2303 |
continue;
|
| 2304 |
y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1; |
| 2305 |
x2 = axisx.max; |
| 2306 |
} |
| 2307 |
|
| 2308 |
if (!areaOpen) {
|
| 2309 |
// open area
|
| 2310 |
ctx.beginPath(); |
| 2311 |
ctx.moveTo(axisx.p2c(x1), axisy.p2c(bottom)); |
| 2312 |
areaOpen = true;
|
| 2313 |
} |
| 2314 |
|
| 2315 |
// now first check the case where both is outside
|
| 2316 |
if (y1 >= axisy.max && y2 >= axisy.max) {
|
| 2317 |
ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.max)); |
| 2318 |
ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.max)); |
| 2319 |
continue;
|
| 2320 |
} |
| 2321 |
else if (y1 <= axisy.min && y2 <= axisy.min) { |
| 2322 |
ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.min)); |
| 2323 |
ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.min)); |
| 2324 |
continue;
|
| 2325 |
} |
| 2326 |
|
| 2327 |
// else it's a bit more complicated, there might
|
| 2328 |
// be a flat maxed out rectangle first, then a
|
| 2329 |
// triangular cutout or reverse; to find these
|
| 2330 |
// keep track of the current x values
|
| 2331 |
var x1old = x1, x2old = x2;
|
| 2332 |
|
| 2333 |
// clip the y values, without shortcutting, we
|
| 2334 |
// go through all cases in turn
|
| 2335 |
|
| 2336 |
// clip with ymin
|
| 2337 |
if (y1 <= y2 && y1 < axisy.min && y2 >= axisy.min) {
|
| 2338 |
x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1; |
| 2339 |
y1 = axisy.min; |
| 2340 |
} |
| 2341 |
else if (y2 <= y1 && y2 < axisy.min && y1 >= axisy.min) { |
| 2342 |
x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1; |
| 2343 |
y2 = axisy.min; |
| 2344 |
} |
| 2345 |
|
| 2346 |
// clip with ymax
|
| 2347 |
if (y1 >= y2 && y1 > axisy.max && y2 <= axisy.max) {
|
| 2348 |
x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1; |
| 2349 |
y1 = axisy.max; |
| 2350 |
} |
| 2351 |
else if (y2 >= y1 && y2 > axisy.max && y1 <= axisy.max) { |
| 2352 |
x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1; |
| 2353 |
y2 = axisy.max; |
| 2354 |
} |
| 2355 |
|
| 2356 |
// if the x value was changed we got a rectangle
|
| 2357 |
// to fill
|
| 2358 |
if (x1 != x1old) {
|
| 2359 |
ctx.lineTo(axisx.p2c(x1old), axisy.p2c(y1)); |
| 2360 |
// it goes to (x1, y1), but we fill that below
|
| 2361 |
} |
| 2362 |
|
| 2363 |
// fill triangular section, this sometimes result
|
| 2364 |
// in redundant points if (x1, y1) hasn't changed
|
| 2365 |
// from previous line to, but we just ignore that
|
| 2366 |
ctx.lineTo(axisx.p2c(x1), axisy.p2c(y1)); |
| 2367 |
ctx.lineTo(axisx.p2c(x2), axisy.p2c(y2)); |
| 2368 |
|
| 2369 |
// fill the other rectangle if it's there
|
| 2370 |
if (x2 != x2old) {
|
| 2371 |
ctx.lineTo(axisx.p2c(x2), axisy.p2c(y2)); |
| 2372 |
ctx.lineTo(axisx.p2c(x2old), axisy.p2c(y2)); |
| 2373 |
} |
| 2374 |
} |
| 2375 |
} |
| 2376 |
|
| 2377 |
ctx.save(); |
| 2378 |
ctx.translate(plotOffset.left, plotOffset.top); |
| 2379 |
ctx.lineJoin = "round";
|
| 2380 |
|
| 2381 |
var lw = series.lines.lineWidth,
|
| 2382 |
sw = series.shadowSize; |
| 2383 |
// FIXME: consider another form of shadow when filling is turned on
|
| 2384 |
if (lw > 0 && sw > 0) { |
| 2385 |
// draw shadow as a thick and thin line with transparency
|
| 2386 |
ctx.lineWidth = sw; |
| 2387 |
ctx.strokeStyle = "rgba(0,0,0,0.1)";
|
| 2388 |
// position shadow at angle from the mid of line
|
| 2389 |
var angle = Math.PI/18; |
| 2390 |
plotLine(series.datapoints, Math.sin(angle) * (lw/2 + sw/2), Math.cos(angle) * (lw/2 + sw/2), series.xaxis, series.yaxis); |
| 2391 |
ctx.lineWidth = sw/2;
|
| 2392 |
plotLine(series.datapoints, Math.sin(angle) * (lw/2 + sw/4), Math.cos(angle) * (lw/2 + sw/4), series.xaxis, series.yaxis); |
| 2393 |
} |
| 2394 |
|
| 2395 |
ctx.lineWidth = lw; |
| 2396 |
ctx.strokeStyle = series.color; |
| 2397 |
var fillStyle = getFillStyle(series.lines, series.color, 0, plotHeight); |
| 2398 |
if (fillStyle) {
|
| 2399 |
ctx.fillStyle = fillStyle; |
| 2400 |
plotLineArea(series.datapoints, series.xaxis, series.yaxis); |
| 2401 |
} |
| 2402 |
|
| 2403 |
if (lw > 0) |
| 2404 |
plotLine(series.datapoints, 0, 0, series.xaxis, series.yaxis); |
| 2405 |
ctx.restore(); |
| 2406 |
} |
| 2407 |
|
| 2408 |
function drawSeriesPoints(series) { |
| 2409 |
function plotPoints(datapoints, radius, fillStyle, offset, shadow, axisx, axisy, symbol) { |
| 2410 |
var points = datapoints.points, ps = datapoints.pointsize;
|
| 2411 |
|
| 2412 |
for (var i = 0; i < points.length; i += ps) { |
| 2413 |
var x = points[i], y = points[i + 1]; |
| 2414 |
if (x == null || x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max) |
| 2415 |
continue;
|
| 2416 |
|
| 2417 |
ctx.beginPath(); |
| 2418 |
x = axisx.p2c(x); |
| 2419 |
y = axisy.p2c(y) + offset; |
| 2420 |
if (symbol == "circle") |
| 2421 |
ctx.arc(x, y, radius, 0, shadow ? Math.PI : Math.PI * 2, false); |
| 2422 |
else
|
| 2423 |
symbol(ctx, x, y, radius, shadow); |
| 2424 |
ctx.closePath(); |
| 2425 |
|
| 2426 |
if (fillStyle) {
|
| 2427 |
ctx.fillStyle = fillStyle; |
| 2428 |
ctx.fill(); |
| 2429 |
} |
| 2430 |
ctx.stroke(); |
| 2431 |
} |
| 2432 |
} |
| 2433 |
|
| 2434 |
ctx.save(); |
| 2435 |
ctx.translate(plotOffset.left, plotOffset.top); |
| 2436 |
|
| 2437 |
var lw = series.points.lineWidth,
|
| 2438 |
sw = series.shadowSize, |
| 2439 |
radius = series.points.radius, |
| 2440 |
symbol = series.points.symbol; |
| 2441 |
|
| 2442 |
// If the user sets the line width to 0, we change it to a very
|
| 2443 |
// small value. A line width of 0 seems to force the default of 1.
|
| 2444 |
// Doing the conditional here allows the shadow setting to still be
|
| 2445 |
// optional even with a lineWidth of 0.
|
| 2446 |
|
| 2447 |
if( lw == 0 ) |
| 2448 |
lw = 0.0001;
|
| 2449 |
|
| 2450 |
if (lw > 0 && sw > 0) { |
| 2451 |
// draw shadow in two steps
|
| 2452 |
var w = sw / 2; |
| 2453 |
ctx.lineWidth = w; |
| 2454 |
ctx.strokeStyle = "rgba(0,0,0,0.1)";
|
| 2455 |
plotPoints(series.datapoints, radius, null, w + w/2, true, |
| 2456 |
series.xaxis, series.yaxis, symbol); |
| 2457 |
|
| 2458 |
ctx.strokeStyle = "rgba(0,0,0,0.2)";
|
| 2459 |
plotPoints(series.datapoints, radius, null, w/2, true, |
| 2460 |
series.xaxis, series.yaxis, symbol); |
| 2461 |
} |
| 2462 |
|
| 2463 |
ctx.lineWidth = lw; |
| 2464 |
ctx.strokeStyle = series.color; |
| 2465 |
plotPoints(series.datapoints, radius, |
| 2466 |
getFillStyle(series.points, series.color), 0, false, |
| 2467 |
series.xaxis, series.yaxis, symbol); |
| 2468 |
ctx.restore(); |
| 2469 |
} |
| 2470 |
|
| 2471 |
function drawBar(x, y, b, barLeft, barRight, offset, fillStyleCallback, axisx, axisy, c, horizontal, lineWidth) { |
| 2472 |
var left, right, bottom, top,
|
| 2473 |
drawLeft, drawRight, drawTop, drawBottom, |
| 2474 |
tmp; |
| 2475 |
|
| 2476 |
// in horizontal mode, we start the bar from the left
|
| 2477 |
// instead of from the bottom so it appears to be
|
| 2478 |
// horizontal rather than vertical
|
| 2479 |
if (horizontal) {
|
| 2480 |
drawBottom = drawRight = drawTop = true;
|
| 2481 |
drawLeft = false;
|
| 2482 |
left = b; |
| 2483 |
right = x; |
| 2484 |
top = y + barLeft; |
| 2485 |
bottom = y + barRight; |
| 2486 |
|
| 2487 |
// account for negative bars
|
| 2488 |
if (right < left) {
|
| 2489 |
tmp = right; |
| 2490 |
right = left; |
| 2491 |
left = tmp; |
| 2492 |
drawLeft = true;
|
| 2493 |
drawRight = false;
|
| 2494 |
} |
| 2495 |
} |
| 2496 |
else {
|
| 2497 |
drawLeft = drawRight = drawTop = true;
|
| 2498 |
drawBottom = false;
|
| 2499 |
left = x + barLeft; |
| 2500 |
right = x + barRight; |
| 2501 |
bottom = b; |
| 2502 |
top = y; |
| 2503 |
|
| 2504 |
// account for negative bars
|
| 2505 |
if (top < bottom) {
|
| 2506 |
tmp = top; |
| 2507 |
top = bottom; |
| 2508 |
bottom = tmp; |
| 2509 |
drawBottom = true;
|
| 2510 |
drawTop = false;
|
| 2511 |
} |
| 2512 |
} |
| 2513 |
|
| 2514 |
// clip
|
| 2515 |
if (right < axisx.min || left > axisx.max ||
|
| 2516 |
top < axisy.min || bottom > axisy.max) |
| 2517 |
return;
|
| 2518 |
|
| 2519 |
if (left < axisx.min) {
|
| 2520 |
left = axisx.min; |
| 2521 |
drawLeft = false;
|
| 2522 |
} |
| 2523 |
|
| 2524 |
if (right > axisx.max) {
|
| 2525 |
right = axisx.max; |
| 2526 |
drawRight = false;
|
| 2527 |
} |
| 2528 |
|
| 2529 |
if (bottom < axisy.min) {
|
| 2530 |
bottom = axisy.min; |
| 2531 |
drawBottom = false;
|
| 2532 |
} |
| 2533 |
|
| 2534 |
if (top > axisy.max) {
|
| 2535 |
top = axisy.max; |
| 2536 |
drawTop = false;
|
| 2537 |
} |
| 2538 |
|
| 2539 |
left = axisx.p2c(left); |
| 2540 |
bottom = axisy.p2c(bottom); |
| 2541 |
right = axisx.p2c(right); |
| 2542 |
top = axisy.p2c(top); |
| 2543 |
|
| 2544 |
// fill the bar
|
| 2545 |
if (fillStyleCallback) {
|
| 2546 |
c.beginPath(); |
| 2547 |
c.moveTo(left, bottom); |
| 2548 |
c.lineTo(left, top); |
| 2549 |
c.lineTo(right, top); |
| 2550 |
c.lineTo(right, bottom); |
| 2551 |
c.fillStyle = fillStyleCallback(bottom, top); |
| 2552 |
c.fill(); |
| 2553 |
} |
| 2554 |
|
| 2555 |
// draw outline
|
| 2556 |
if (lineWidth > 0 && (drawLeft || drawRight || drawTop || drawBottom)) { |
| 2557 |
c.beginPath(); |
| 2558 |
|
| 2559 |
// FIXME: inline moveTo is buggy with excanvas
|
| 2560 |
c.moveTo(left, bottom + offset); |
| 2561 |
if (drawLeft)
|
| 2562 |
c.lineTo(left, top + offset); |
| 2563 |
else
|
| 2564 |
c.moveTo(left, top + offset); |
| 2565 |
if (drawTop)
|
| 2566 |
c.lineTo(right, top + offset); |
| 2567 |
else
|
| 2568 |
c.moveTo(right, top + offset); |
| 2569 |
if (drawRight)
|
| 2570 |
c.lineTo(right, bottom + offset); |
| 2571 |
else
|
| 2572 |
c.moveTo(right, bottom + offset); |
| 2573 |
if (drawBottom)
|
| 2574 |
c.lineTo(left, bottom + offset); |
| 2575 |
else
|
| 2576 |
c.moveTo(left, bottom + offset); |
| 2577 |
c.stroke(); |
| 2578 |
} |
| 2579 |
} |
| 2580 |
|
| 2581 |
function drawSeriesBars(series) { |
| 2582 |
function plotBars(datapoints, barLeft, barRight, offset, fillStyleCallback, axisx, axisy) { |
| 2583 |
var points = datapoints.points, ps = datapoints.pointsize;
|
| 2584 |
|
| 2585 |
for (var i = 0; i < points.length; i += ps) { |
| 2586 |
if (points[i] == null) |
| 2587 |
continue;
|
| 2588 |
drawBar(points[i], points[i + 1], points[i + 2], barLeft, barRight, offset, fillStyleCallback, axisx, axisy, ctx, series.bars.horizontal, series.bars.lineWidth); |
| 2589 |
} |
| 2590 |
} |
| 2591 |
|
| 2592 |
ctx.save(); |
| 2593 |
ctx.translate(plotOffset.left, plotOffset.top); |
| 2594 |
|
| 2595 |
// FIXME: figure out a way to add shadows (for instance along the right edge)
|
| 2596 |
ctx.lineWidth = series.bars.lineWidth; |
| 2597 |
ctx.strokeStyle = series.color; |
| 2598 |
|
| 2599 |
var barLeft;
|
| 2600 |
|
| 2601 |
switch (series.bars.align) {
|
| 2602 |
case "left": |
| 2603 |
barLeft = 0;
|
| 2604 |
break;
|
| 2605 |
case "right": |
| 2606 |
barLeft = -series.bars.barWidth; |
| 2607 |
break;
|
| 2608 |
case "center": |
| 2609 |
barLeft = -series.bars.barWidth / 2;
|
| 2610 |
break;
|
| 2611 |
default:
|
| 2612 |
throw new Error("Invalid bar alignment: " + series.bars.align); |
| 2613 |
} |
| 2614 |
|
| 2615 |
var fillStyleCallback = series.bars.fill ? function (bottom, top) { return getFillStyle(series.bars, series.color, bottom, top); } : null; |
| 2616 |
plotBars(series.datapoints, barLeft, barLeft + series.bars.barWidth, 0, fillStyleCallback, series.xaxis, series.yaxis);
|
| 2617 |
ctx.restore(); |
| 2618 |
} |
| 2619 |
|
| 2620 |
function getFillStyle(filloptions, seriesColor, bottom, top) { |
| 2621 |
var fill = filloptions.fill;
|
| 2622 |
if (!fill)
|
| 2623 |
return null; |
| 2624 |
|
| 2625 |
if (filloptions.fillColor)
|
| 2626 |
return getColorOrGradient(filloptions.fillColor, bottom, top, seriesColor);
|
| 2627 |
|
| 2628 |
var c = $.color.parse(seriesColor); |
| 2629 |
c.a = typeof fill == "number" ? fill : 0.4; |
| 2630 |
c.normalize(); |
| 2631 |
return c.toString();
|
| 2632 |
} |
| 2633 |
|
| 2634 |
function insertLegend() { |
| 2635 |
|
| 2636 |
placeholder.find(".legend").remove();
|
| 2637 |
|
| 2638 |
if (!options.legend.show)
|
| 2639 |
return;
|
| 2640 |
|
| 2641 |
var fragments = [], entries = [], rowStarted = false, |
| 2642 |
lf = options.legend.labelFormatter, s, label; |
| 2643 |
|
| 2644 |
// Build a list of legend entries, with each having a label and a color
|
| 2645 |
|
| 2646 |
for (var i = 0; i < series.length; ++i) { |
| 2647 |
s = series[i]; |
| 2648 |
if (s.label) {
|
| 2649 |
label = lf ? lf(s.label, s) : s.label; |
| 2650 |
if (label) {
|
| 2651 |
entries.push({
|
| 2652 |
label: label,
|
| 2653 |
color: s.color
|
| 2654 |
}); |
| 2655 |
} |
| 2656 |
} |
| 2657 |
} |
| 2658 |
|
| 2659 |
// Sort the legend using either the default or a custom comparator
|
| 2660 |
|
| 2661 |
if (options.legend.sorted) {
|
| 2662 |
if ($.isFunction(options.legend.sorted)) { |
| 2663 |
entries.sort(options.legend.sorted); |
| 2664 |
} else if (options.legend.sorted == "reverse") { |
| 2665 |
entries.reverse(); |
| 2666 |
} else {
|
| 2667 |
var ascending = options.legend.sorted != "descending"; |
| 2668 |
entries.sort(function(a, b) {
|
| 2669 |
return a.label == b.label ? 0 : ( |
| 2670 |
(a.label < b.label) != ascending ? 1 : -1 // Logical XOR |
| 2671 |
); |
| 2672 |
}); |
| 2673 |
} |
| 2674 |
} |
| 2675 |
|
| 2676 |
// Generate markup for the list of entries, in their final order
|
| 2677 |
|
| 2678 |
for (var i = 0; i < entries.length; ++i) { |
| 2679 |
|
| 2680 |
var entry = entries[i];
|
| 2681 |
|
| 2682 |
if (i % options.legend.noColumns == 0) { |
| 2683 |
if (rowStarted)
|
| 2684 |
fragments.push('</tr>');
|
| 2685 |
fragments.push('<tr>');
|
| 2686 |
rowStarted = true;
|
| 2687 |
} |
| 2688 |
|
| 2689 |
fragments.push( |
| 2690 |
'<td class="legendColorBox"><div style="border:1px solid ' + options.legend.labelBoxBorderColor + ';padding:1px"><div style="width:4px;height:0;border:5px solid ' + entry.color + ';overflow:hidden"></div></div></td>' + |
| 2691 |
'<td class="legendLabel">' + entry.label + '</td>' |
| 2692 |
); |
| 2693 |
} |
| 2694 |
|
| 2695 |
if (rowStarted)
|
| 2696 |
fragments.push('</tr>');
|
| 2697 |
|
| 2698 |
if (fragments.length == 0) |
| 2699 |
return;
|
| 2700 |
|
| 2701 |
var table = '<table style="font-size:smaller;color:' + options.grid.color + '">' + fragments.join("") + '</table>'; |
| 2702 |
if (options.legend.container != null) |
| 2703 |
$(options.legend.container).html(table);
|
| 2704 |
else {
|
| 2705 |
var pos = "", |
| 2706 |
p = options.legend.position, |
| 2707 |
m = options.legend.margin; |
| 2708 |
if (m[0] == null) |
| 2709 |
m = [m, m]; |
| 2710 |
if (p.charAt(0) == "n") |
| 2711 |
pos += 'top:' + (m[1] + plotOffset.top) + 'px;'; |
| 2712 |
else if (p.charAt(0) == "s") |
| 2713 |
pos += 'bottom:' + (m[1] + plotOffset.bottom) + 'px;'; |
| 2714 |
if (p.charAt(1) == "e") |
| 2715 |
pos += 'right:' + (m[0] + plotOffset.right) + 'px;'; |
| 2716 |
else if (p.charAt(1) == "w") |
| 2717 |
pos += 'left:' + (m[0] + plotOffset.left) + 'px;'; |
| 2718 |
var legend = $('<div class="legend">' + table.replace('style="', 'style="position:absolute;' + pos +';') + '</div>').appendTo(placeholder); |
| 2719 |
if (options.legend.backgroundOpacity != 0.0) { |
| 2720 |
// put in the transparent background
|
| 2721 |
// separately to avoid blended labels and
|
| 2722 |
// label boxes
|
| 2723 |
var c = options.legend.backgroundColor;
|
| 2724 |
if (c == null) { |
| 2725 |
c = options.grid.backgroundColor; |
| 2726 |
if (c && typeof c == "string") |
| 2727 |
c = $.color.parse(c);
|
| 2728 |
else
|
| 2729 |
c = $.color.extract(legend, 'background-color'); |
| 2730 |
c.a = 1;
|
| 2731 |
c = c.toString(); |
| 2732 |
} |
| 2733 |
var div = legend.children();
|
| 2734 |
$('<div style="position:absolute;width:' + div.width() + 'px;height:' + div.height() + 'px;' + pos +'background-color:' + c + ';"> </div>').prependTo(legend).css('opacity', options.legend.backgroundOpacity); |
| 2735 |
} |
| 2736 |
} |
| 2737 |
} |
| 2738 |
|
| 2739 |
|
| 2740 |
// interactive features
|
| 2741 |
|
| 2742 |
var highlights = [],
|
| 2743 |
redrawTimeout = null;
|
| 2744 |
|
| 2745 |
// returns the data item the mouse is over, or null if none is found
|
| 2746 |
function findNearbyItem(mouseX, mouseY, seriesFilter) { |
| 2747 |
var maxDistance = options.grid.mouseActiveRadius,
|
| 2748 |
smallestDistance = maxDistance * maxDistance + 1,
|
| 2749 |
item = null, foundPoint = false, i, j, ps; |
| 2750 |
|
| 2751 |
for (i = series.length - 1; i >= 0; --i) { |
| 2752 |
if (!seriesFilter(series[i]))
|
| 2753 |
continue;
|
| 2754 |
|
| 2755 |
var s = series[i],
|
| 2756 |
axisx = s.xaxis, |
| 2757 |
axisy = s.yaxis, |
| 2758 |
points = s.datapoints.points, |
| 2759 |
mx = axisx.c2p(mouseX), // precompute some stuff to make the loop faster
|
| 2760 |
my = axisy.c2p(mouseY), |
| 2761 |
maxx = maxDistance / axisx.scale, |
| 2762 |
maxy = maxDistance / axisy.scale; |
| 2763 |
|
| 2764 |
ps = s.datapoints.pointsize; |
| 2765 |
// with inverse transforms, we can't use the maxx/maxy
|
| 2766 |
// optimization, sadly
|
| 2767 |
if (axisx.options.inverseTransform)
|
| 2768 |
maxx = Number.MAX_VALUE; |
| 2769 |
if (axisy.options.inverseTransform)
|
| 2770 |
maxy = Number.MAX_VALUE; |
| 2771 |
|
| 2772 |
if (s.lines.show || s.points.show) {
|
| 2773 |
for (j = 0; j < points.length; j += ps) { |
| 2774 |
var x = points[j], y = points[j + 1]; |
| 2775 |
if (x == null) |
| 2776 |
continue;
|
| 2777 |
|
| 2778 |
// For points and lines, the cursor must be within a
|
| 2779 |
// certain distance to the data point
|
| 2780 |
if (x - mx > maxx || x - mx < -maxx ||
|
| 2781 |
y - my > maxy || y - my < -maxy) |
| 2782 |
continue;
|
| 2783 |
|
| 2784 |
// We have to calculate distances in pixels, not in
|
| 2785 |
// data units, because the scales of the axes may be different
|
| 2786 |
var dx = Math.abs(axisx.p2c(x) - mouseX),
|
| 2787 |
dy = Math.abs(axisy.p2c(y) - mouseY), |
| 2788 |
dist = dx * dx + dy * dy; // we save the sqrt
|
| 2789 |
|
| 2790 |
// use <= to ensure last point takes precedence
|
| 2791 |
// (last generally means on top of)
|
| 2792 |
if (dist < smallestDistance) {
|
| 2793 |
smallestDistance = dist; |
| 2794 |
item = [i, j / ps]; |
| 2795 |
} |
| 2796 |
} |
| 2797 |
} |
| 2798 |
|
| 2799 |
if (s.bars.show && !item) { // no other point can be nearby |
| 2800 |
var barLeft = s.bars.align == "left" ? 0 : -s.bars.barWidth/2, |
| 2801 |
barRight = barLeft + s.bars.barWidth; |
| 2802 |
|
| 2803 |
for (j = 0; j < points.length; j += ps) { |
| 2804 |
var x = points[j], y = points[j + 1], b = points[j + 2]; |
| 2805 |
if (x == null) |
| 2806 |
continue;
|
| 2807 |
|
| 2808 |
// for a bar graph, the cursor must be inside the bar
|
| 2809 |
if (series[i].bars.horizontal ?
|
| 2810 |
(mx <= Math.max(b, x) && mx >= Math.min(b, x) && |
| 2811 |
my >= y + barLeft && my <= y + barRight) : |
| 2812 |
(mx >= x + barLeft && mx <= x + barRight && |
| 2813 |
my >= Math.min(b, y) && my <= Math.max(b, y))) |
| 2814 |
item = [i, j / ps]; |
| 2815 |
} |
| 2816 |
} |
| 2817 |
} |
| 2818 |
|
| 2819 |
if (item) {
|
| 2820 |
i = item[0];
|
| 2821 |
j = item[1];
|
| 2822 |
ps = series[i].datapoints.pointsize; |
| 2823 |
|
| 2824 |
return { datapoint: series[i].datapoints.points.slice(j * ps, (j + 1) * ps), |
| 2825 |
dataIndex: j,
|
| 2826 |
series: series[i],
|
| 2827 |
seriesIndex: i };
|
| 2828 |
} |
| 2829 |
|
| 2830 |
return null; |
| 2831 |
} |
| 2832 |
|
| 2833 |
function onMouseMove(e) { |
| 2834 |
if (options.grid.hoverable)
|
| 2835 |
triggerClickHoverEvent("plothover", e,
|
| 2836 |
function (s) { return s["hoverable"] != false; }); |
| 2837 |
} |
| 2838 |
|
| 2839 |
function onMouseLeave(e) { |
| 2840 |
if (options.grid.hoverable)
|
| 2841 |
triggerClickHoverEvent("plothover", e,
|
| 2842 |
function (s) { return false; }); |
| 2843 |
} |
| 2844 |
|
| 2845 |
function onClick(e) { |
| 2846 |
triggerClickHoverEvent("plotclick", e,
|
| 2847 |
function (s) { return s["clickable"] != false; }); |
| 2848 |
} |
| 2849 |
|
| 2850 |
// trigger click or hover event (they send the same parameters
|
| 2851 |
// so we share their code)
|
| 2852 |
function triggerClickHoverEvent(eventname, event, seriesFilter) { |
| 2853 |
var offset = eventHolder.offset(),
|
| 2854 |
canvasX = event.pageX - offset.left - plotOffset.left, |
| 2855 |
canvasY = event.pageY - offset.top - plotOffset.top, |
| 2856 |
pos = canvasToAxisCoords({ left: canvasX, top: canvasY });
|
| 2857 |
|
| 2858 |
pos.pageX = event.pageX; |
| 2859 |
pos.pageY = event.pageY; |
| 2860 |
|
| 2861 |
var item = findNearbyItem(canvasX, canvasY, seriesFilter);
|
| 2862 |
|
| 2863 |
if (item) {
|
| 2864 |
// fill in mouse pos for any listeners out there
|
| 2865 |
item.pageX = parseInt(item.series.xaxis.p2c(item.datapoint[0]) + offset.left + plotOffset.left, 10); |
| 2866 |
item.pageY = parseInt(item.series.yaxis.p2c(item.datapoint[1]) + offset.top + plotOffset.top, 10); |
| 2867 |
} |
| 2868 |
|
| 2869 |
if (options.grid.autoHighlight) {
|
| 2870 |
// clear auto-highlights
|
| 2871 |
for (var i = 0; i < highlights.length; ++i) { |
| 2872 |
var h = highlights[i];
|
| 2873 |
if (h.auto == eventname &&
|
| 2874 |
!(item && h.series == item.series && |
| 2875 |
h.point[0] == item.datapoint[0] && |
| 2876 |
h.point[1] == item.datapoint[1])) |
| 2877 |
unhighlight(h.series, h.point); |
| 2878 |
} |
| 2879 |
|
| 2880 |
if (item)
|
| 2881 |
highlight(item.series, item.datapoint, eventname); |
| 2882 |
} |
| 2883 |
|
| 2884 |
placeholder.trigger(eventname, [ pos, item ]); |
| 2885 |
} |
| 2886 |
|
| 2887 |
function triggerRedrawOverlay() { |
| 2888 |
var t = options.interaction.redrawOverlayInterval;
|
| 2889 |
if (t == -1) { // skip event queue |
| 2890 |
drawOverlay(); |
| 2891 |
return;
|
| 2892 |
} |
| 2893 |
|
| 2894 |
if (!redrawTimeout)
|
| 2895 |
redrawTimeout = setTimeout(drawOverlay, t); |
| 2896 |
} |
| 2897 |
|
| 2898 |
function drawOverlay() { |
| 2899 |
redrawTimeout = null;
|
| 2900 |
|
| 2901 |
// draw highlights
|
| 2902 |
octx.save(); |
| 2903 |
overlay.clear(); |
| 2904 |
octx.translate(plotOffset.left, plotOffset.top); |
| 2905 |
|
| 2906 |
var i, hi;
|
| 2907 |
for (i = 0; i < highlights.length; ++i) { |
| 2908 |
hi = highlights[i]; |
| 2909 |
|
| 2910 |
if (hi.series.bars.show)
|
| 2911 |
drawBarHighlight(hi.series, hi.point); |
| 2912 |
else
|
| 2913 |
drawPointHighlight(hi.series, hi.point); |
| 2914 |
} |
| 2915 |
octx.restore(); |
| 2916 |
|
| 2917 |
executeHooks(hooks.drawOverlay, [octx]); |
| 2918 |
} |
| 2919 |
|
| 2920 |
function highlight(s, point, auto) { |
| 2921 |
if (typeof s == "number") |
| 2922 |
s = series[s]; |
| 2923 |
|
| 2924 |
if (typeof point == "number") { |
| 2925 |
var ps = s.datapoints.pointsize;
|
| 2926 |
point = s.datapoints.points.slice(ps * point, ps * (point + 1));
|
| 2927 |
} |
| 2928 |
|
| 2929 |
var i = indexOfHighlight(s, point);
|
| 2930 |
if (i == -1) { |
| 2931 |
highlights.push({ series: s, point: point, auto: auto });
|
| 2932 |
|
| 2933 |
triggerRedrawOverlay(); |
| 2934 |
} |
| 2935 |
else if (!auto) |
| 2936 |
highlights[i].auto = false;
|
| 2937 |
} |
| 2938 |
|
| 2939 |
function unhighlight(s, point) { |
| 2940 |
if (s == null && point == null) { |
| 2941 |
highlights = []; |
| 2942 |
triggerRedrawOverlay(); |
| 2943 |
return;
|
| 2944 |
} |
| 2945 |
|
| 2946 |
if (typeof s == "number") |
| 2947 |
s = series[s]; |
| 2948 |
|
| 2949 |
if (typeof point == "number") { |
| 2950 |
var ps = s.datapoints.pointsize;
|
| 2951 |
point = s.datapoints.points.slice(ps * point, ps * (point + 1));
|
| 2952 |
} |
| 2953 |
|
| 2954 |
var i = indexOfHighlight(s, point);
|
| 2955 |
if (i != -1) { |
| 2956 |
highlights.splice(i, 1);
|
| 2957 |
|
| 2958 |
triggerRedrawOverlay(); |
| 2959 |
} |
| 2960 |
} |
| 2961 |
|
| 2962 |
function indexOfHighlight(s, p) { |
| 2963 |
for (var i = 0; i < highlights.length; ++i) { |
| 2964 |
var h = highlights[i];
|
| 2965 |
if (h.series == s && h.point[0] == p[0] |
| 2966 |
&& h.point[1] == p[1]) |
| 2967 |
return i;
|
| 2968 |
} |
| 2969 |
return -1; |
| 2970 |
} |
| 2971 |
|
| 2972 |
function drawPointHighlight(series, point) { |
| 2973 |
var x = point[0], y = point[1], |
| 2974 |
axisx = series.xaxis, axisy = series.yaxis, |
| 2975 |
highlightColor = (typeof series.highlightColor === "string") ? series.highlightColor : $.color.parse(series.color).scale('a', 0.5).toString(); |
| 2976 |
|
| 2977 |
if (x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max)
|
| 2978 |
return;
|
| 2979 |
|
| 2980 |
var pointRadius = series.points.radius + series.points.lineWidth / 2; |
| 2981 |
octx.lineWidth = pointRadius; |
| 2982 |
octx.strokeStyle = highlightColor; |
| 2983 |
var radius = 1.5 * pointRadius; |
| 2984 |
x = axisx.p2c(x); |
| 2985 |
y = axisy.p2c(y); |
| 2986 |
|
| 2987 |
octx.beginPath(); |
| 2988 |
if (series.points.symbol == "circle") |
| 2989 |
octx.arc(x, y, radius, 0, 2 * Math.PI, false); |
| 2990 |
else
|
| 2991 |
series.points.symbol(octx, x, y, radius, false);
|
| 2992 |
octx.closePath(); |
| 2993 |
octx.stroke(); |
| 2994 |
} |
| 2995 |
|
| 2996 |
function drawBarHighlight(series, point) { |
| 2997 |
var highlightColor = (typeof series.highlightColor === "string") ? series.highlightColor : $.color.parse(series.color).scale('a', 0.5).toString(), |
| 2998 |
fillStyle = highlightColor, |
| 2999 |
barLeft = series.bars.align == "left" ? 0 : -series.bars.barWidth/2; |
| 3000 |
|
| 3001 |
octx.lineWidth = series.bars.lineWidth; |
| 3002 |
octx.strokeStyle = highlightColor; |
| 3003 |
|
| 3004 |
drawBar(point[0], point[1], point[2] || 0, barLeft, barLeft + series.bars.barWidth, |
| 3005 |
0, function () { return fillStyle; }, series.xaxis, series.yaxis, octx, series.bars.horizontal, series.bars.lineWidth); |
| 3006 |
} |
| 3007 |
|
| 3008 |
function getColorOrGradient(spec, bottom, top, defaultColor) { |
| 3009 |
if (typeof spec == "string") |
| 3010 |
return spec;
|
| 3011 |
else {
|
| 3012 |
// assume this is a gradient spec; IE currently only
|
| 3013 |
// supports a simple vertical gradient properly, so that's
|
| 3014 |
// what we support too
|
| 3015 |
var gradient = ctx.createLinearGradient(0, top, 0, bottom); |
| 3016 |
|
| 3017 |
for (var i = 0, l = spec.colors.length; i < l; ++i) { |
| 3018 |
var c = spec.colors[i];
|
| 3019 |
if (typeof c != "string") { |
| 3020 |
var co = $.color.parse(defaultColor); |
| 3021 |
if (c.brightness != null) |
| 3022 |
co = co.scale('rgb', c.brightness);
|
| 3023 |
if (c.opacity != null) |
| 3024 |
co.a *= c.opacity; |
| 3025 |
c = co.toString(); |
| 3026 |
} |
| 3027 |
gradient.addColorStop(i / (l - 1), c);
|
| 3028 |
} |
| 3029 |
|
| 3030 |
return gradient;
|
| 3031 |
} |
| 3032 |
} |
| 3033 |
} |
| 3034 |
|
| 3035 |
// Add the plot function to the top level of the jQuery object
|
| 3036 |
|
| 3037 |
$.plot = function(placeholder, data, options) { |
| 3038 |
//var t0 = new Date();
|
| 3039 |
var plot = new Plot($(placeholder), data, options, $.plot.plugins); |
| 3040 |
//(window.console ? console.log : alert)("time used (msecs): " + ((new Date()).getTime() - t0.getTime()));
|
| 3041 |
return plot;
|
| 3042 |
}; |
| 3043 |
|
| 3044 |
$.plot.version = "0.8.1"; |
| 3045 |
|
| 3046 |
$.plot.plugins = [];
|
| 3047 |
|
| 3048 |
// Also add the plot function as a chainable property
|
| 3049 |
|
| 3050 |
$.fn.plot = function(data, options) { |
| 3051 |
return this.each(function() { |
| 3052 |
$.plot(this, data, options); |
| 3053 |
}); |
| 3054 |
}; |
| 3055 |
|
| 3056 |
// round to nearby lower multiple of base
|
| 3057 |
function floorInBase(n, base) { |
| 3058 |
return base * Math.floor(n / base);
|
| 3059 |
} |
| 3060 |
|
| 3061 |
})(jQuery); |