-/*! Javascript plotting library for jQuery, v. 0.7.
- *
- * Released under the MIT license by IOLA, December 2007.
- *
- */
+/* Javascript plotting library for jQuery, version 0.8.3.
+
+Copyright (c) 2007-2014 IOLA and Ole Laursen.
+Licensed under the MIT license.
+
+*/
// first an inline dependency, jquery.colorhelpers.js, we inline it here
// for convenience
/* Plugin for jQuery for working with colors.
- *
+ *
* Version 1.1.
- *
+ *
* Inspiration from jQuery color animation plugin by John Resig.
*
* Released under the MIT license by Ole Laursen, October 2009.
*
* V. 1.1: Fix error handling so e.g. parsing an empty string does
* produce a color rather than just crashing.
- */
-(function(B){B.color={};B.color.make=function(F,E,C,D){var G={};G.r=F||0;G.g=E||0;G.b=C||0;G.a=D!=null?D:1;G.add=function(J,I){for(var H=0;H<J.length;++H){G[J.charAt(H)]+=I}return G.normalize()};G.scale=function(J,I){for(var H=0;H<J.length;++H){G[J.charAt(H)]*=I}return G.normalize()};G.toString=function(){if(G.a>=1){return"rgb("+[G.r,G.g,G.b].join(",")+")"}else{return"rgba("+[G.r,G.g,G.b,G.a].join(",")+")"}};G.normalize=function(){function H(J,K,I){return K<J?J:(K>I?I:K)}G.r=H(0,parseInt(G.r),255);G.g=H(0,parseInt(G.g),255);G.b=H(0,parseInt(G.b),255);G.a=H(0,G.a,1);return G};G.clone=function(){return B.color.make(G.r,G.b,G.g,G.a)};return G.normalize()};B.color.extract=function(D,C){var E;do{E=D.css(C).toLowerCase();if(E!=""&&E!="transparent"){break}D=D.parent()}while(!B.nodeName(D.get(0),"body"));if(E=="rgba(0, 0, 0, 0)"){E="transparent"}return B.color.parse(E)};B.color.parse=function(F){var E,C=B.color.make;if(E=/rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(F)){return C(parseInt(E[1],10),parseInt(E[2],10),parseInt(E[3],10))}if(E=/rgba\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(F)){return C(parseInt(E[1],10),parseInt(E[2],10),parseInt(E[3],10),parseFloat(E[4]))}if(E=/rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(F)){return C(parseFloat(E[1])*2.55,parseFloat(E[2])*2.55,parseFloat(E[3])*2.55)}if(E=/rgba\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(F)){return C(parseFloat(E[1])*2.55,parseFloat(E[2])*2.55,parseFloat(E[3])*2.55,parseFloat(E[4]))}if(E=/#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(F)){return C(parseInt(E[1],16),parseInt(E[2],16),parseInt(E[3],16))}if(E=/#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(F)){return C(parseInt(E[1]+E[1],16),parseInt(E[2]+E[2],16),parseInt(E[3]+E[3],16))}var D=B.trim(F).toLowerCase();if(D=="transparent"){return C(255,255,255,0)}else{E=A[D]||[0,0,0];return C(E[0],E[1],E[2])}};var A={aqua:[0,255,255],azure:[240,255,255],beige:[245,245,220],black:[0,0,0],blue:[0,0,255],brown:[165,42,42],cyan:[0,255,255],darkblue:[0,0,139],darkcyan:[0,139,139],darkgrey:[169,169,169],darkgreen:[0,100,0],darkkhaki:[189,183,107],darkmagenta:[139,0,139],darkolivegreen:[85,107,47],darkorange:[255,140,0],darkorchid:[153,50,204],darkred:[139,0,0],darksalmon:[233,150,122],darkviolet:[148,0,211],fuchsia:[255,0,255],gold:[255,215,0],green:[0,128,0],indigo:[75,0,130],khaki:[240,230,140],lightblue:[173,216,230],lightcyan:[224,255,255],lightgreen:[144,238,144],lightgrey:[211,211,211],lightpink:[255,182,193],lightyellow:[255,255,224],lime:[0,255,0],magenta:[255,0,255],maroon:[128,0,0],navy:[0,0,128],olive:[128,128,0],orange:[255,165,0],pink:[255,192,203],purple:[128,0,128],violet:[128,0,128],red:[255,0,0],silver:[192,192,192],white:[255,255,255],yellow:[255,255,0]}})(jQuery);
+ */
+(function($){$.color={};$.color.make=function(r,g,b,a){var o={};o.r=r||0;o.g=g||0;o.b=b||0;o.a=a!=null?a:1;o.add=function(c,d){for(var i=0;i<c.length;++i)o[c.charAt(i)]+=d;return o.normalize()};o.scale=function(c,f){for(var i=0;i<c.length;++i)o[c.charAt(i)]*=f;return o.normalize()};o.toString=function(){if(o.a>=1){return"rgb("+[o.r,o.g,o.b].join(",")+")"}else{return"rgba("+[o.r,o.g,o.b,o.a].join(",")+")"}};o.normalize=function(){function clamp(min,value,max){return value<min?min:value>max?max:value}o.r=clamp(0,parseInt(o.r),255);o.g=clamp(0,parseInt(o.g),255);o.b=clamp(0,parseInt(o.b),255);o.a=clamp(0,o.a,1);return o};o.clone=function(){return $.color.make(o.r,o.b,o.g,o.a)};return o.normalize()};$.color.extract=function(elem,css){var c;do{c=elem.css(css).toLowerCase();if(c!=""&&c!="transparent")break;elem=elem.parent()}while(elem.length&&!$.nodeName(elem.get(0),"body"));if(c=="rgba(0, 0, 0, 0)")c="transparent";return $.color.parse(c)};$.color.parse=function(str){var res,m=$.color.make;if(res=/rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(str))return m(parseInt(res[1],10),parseInt(res[2],10),parseInt(res[3],10));if(res=/rgba\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(str))return m(parseInt(res[1],10),parseInt(res[2],10),parseInt(res[3],10),parseFloat(res[4]));if(res=/rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(str))return m(parseFloat(res[1])*2.55,parseFloat(res[2])*2.55,parseFloat(res[3])*2.55);if(res=/rgba\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(str))return m(parseFloat(res[1])*2.55,parseFloat(res[2])*2.55,parseFloat(res[3])*2.55,parseFloat(res[4]));if(res=/#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(str))return m(parseInt(res[1],16),parseInt(res[2],16),parseInt(res[3],16));if(res=/#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(str))return m(parseInt(res[1]+res[1],16),parseInt(res[2]+res[2],16),parseInt(res[3]+res[3],16));var name=$.trim(str).toLowerCase();if(name=="transparent")return m(255,255,255,0);else{res=lookupColors[name]||[0,0,0];return m(res[0],res[1],res[2])}};var lookupColors={aqua:[0,255,255],azure:[240,255,255],beige:[245,245,220],black:[0,0,0],blue:[0,0,255],brown:[165,42,42],cyan:[0,255,255],darkblue:[0,0,139],darkcyan:[0,139,139],darkgrey:[169,169,169],darkgreen:[0,100,0],darkkhaki:[189,183,107],darkmagenta:[139,0,139],darkolivegreen:[85,107,47],darkorange:[255,140,0],darkorchid:[153,50,204],darkred:[139,0,0],darksalmon:[233,150,122],darkviolet:[148,0,211],fuchsia:[255,0,255],gold:[255,215,0],green:[0,128,0],indigo:[75,0,130],khaki:[240,230,140],lightblue:[173,216,230],lightcyan:[224,255,255],lightgreen:[144,238,144],lightgrey:[211,211,211],lightpink:[255,182,193],lightyellow:[255,255,224],lime:[0,255,0],magenta:[255,0,255],maroon:[128,0,0],navy:[0,0,128],olive:[128,128,0],orange:[255,165,0],pink:[255,192,203],purple:[128,0,128],violet:[128,0,128],red:[255,0,0],silver:[192,192,192],white:[255,255,255],yellow:[255,255,0]}})(jQuery);
// the actual Flot code
(function($) {
+
+ // Cache the prototype hasOwnProperty for faster access
+
+ var hasOwnProperty = Object.prototype.hasOwnProperty;
+
+ // A shim to provide 'detach' to jQuery versions prior to 1.4. Using a DOM
+ // operation produces the same effect as detach, i.e. removing the element
+ // without touching its jQuery data.
+
+ // Do not merge this into Flot 0.9, since it requires jQuery 1.4.4+.
+
+ if (!$.fn.detach) {
+ $.fn.detach = function() {
+ return this.each(function() {
+ if (this.parentNode) {
+ this.parentNode.removeChild( this );
+ }
+ });
+ };
+ }
+
+ ///////////////////////////////////////////////////////////////////////////
+ // The Canvas object is a wrapper around an HTML5 <canvas> tag.
+ //
+ // @constructor
+ // @param {string} cls List of classes to apply to the canvas.
+ // @param {element} container Element onto which to append the canvas.
+ //
+ // Requiring a container is a little iffy, but unfortunately canvas
+ // operations don't work unless the canvas is attached to the DOM.
+
+ function Canvas(cls, container) {
+
+ var element = container.children("." + cls)[0];
+
+ if (element == null) {
+
+ element = document.createElement("canvas");
+ element.className = cls;
+
+ $(element).css({ direction: "ltr", position: "absolute", left: 0, top: 0 })
+ .appendTo(container);
+
+ // If HTML5 Canvas isn't available, fall back to [Ex|Flash]canvas
+
+ if (!element.getContext) {
+ if (window.G_vmlCanvasManager) {
+ element = window.G_vmlCanvasManager.initElement(element);
+ } else {
+ throw new Error("Canvas is not available. If you're using IE with a fall-back such as Excanvas, then there's either a mistake in your conditional include, or the page has no DOCTYPE and is rendering in Quirks Mode.");
+ }
+ }
+ }
+
+ this.element = element;
+
+ var context = this.context = element.getContext("2d");
+
+ // Determine the screen's ratio of physical to device-independent
+ // pixels. This is the ratio between the canvas width that the browser
+ // advertises and the number of pixels actually present in that space.
+
+ // The iPhone 4, for example, has a device-independent width of 320px,
+ // but its screen is actually 640px wide. It therefore has a pixel
+ // ratio of 2, while most normal devices have a ratio of 1.
+
+ var devicePixelRatio = window.devicePixelRatio || 1,
+ backingStoreRatio =
+ context.webkitBackingStorePixelRatio ||
+ context.mozBackingStorePixelRatio ||
+ context.msBackingStorePixelRatio ||
+ context.oBackingStorePixelRatio ||
+ context.backingStorePixelRatio || 1;
+
+ this.pixelRatio = devicePixelRatio / backingStoreRatio;
+
+ // Size the canvas to match the internal dimensions of its container
+
+ this.resize(container.width(), container.height());
+
+ // Collection of HTML div layers for text overlaid onto the canvas
+
+ this.textContainer = null;
+ this.text = {};
+
+ // Cache of text fragments and metrics, so we can avoid expensively
+ // re-calculating them when the plot is re-rendered in a loop.
+
+ this._textCache = {};
+ }
+
+ // Resizes the canvas to the given dimensions.
+ //
+ // @param {number} width New width of the canvas, in pixels.
+ // @param {number} width New height of the canvas, in pixels.
+
+ Canvas.prototype.resize = function(width, height) {
+
+ if (width <= 0 || height <= 0) {
+ throw new Error("Invalid dimensions for plot, width = " + width + ", height = " + height);
+ }
+
+ var element = this.element,
+ context = this.context,
+ pixelRatio = this.pixelRatio;
+
+ // Resize the canvas, increasing its density based on the display's
+ // pixel ratio; basically giving it more pixels without increasing the
+ // size of its element, to take advantage of the fact that retina
+ // displays have that many more pixels in the same advertised space.
+
+ // Resizing should reset the state (excanvas seems to be buggy though)
+
+ if (this.width != width) {
+ element.width = width * pixelRatio;
+ element.style.width = width + "px";
+ this.width = width;
+ }
+
+ if (this.height != height) {
+ element.height = height * pixelRatio;
+ element.style.height = height + "px";
+ this.height = height;
+ }
+
+ // Save the context, so we can reset in case we get replotted. The
+ // restore ensure that we're really back at the initial state, and
+ // should be safe even if we haven't saved the initial state yet.
+
+ context.restore();
+ context.save();
+
+ // Scale the coordinate space to match the display density; so even though we
+ // may have twice as many pixels, we still want lines and other drawing to
+ // appear at the same size; the extra pixels will just make them crisper.
+
+ context.scale(pixelRatio, pixelRatio);
+ };
+
+ // Clears the entire canvas area, not including any overlaid HTML text
+
+ Canvas.prototype.clear = function() {
+ this.context.clearRect(0, 0, this.width, this.height);
+ };
+
+ // Finishes rendering the canvas, including managing the text overlay.
+
+ Canvas.prototype.render = function() {
+
+ var cache = this._textCache;
+
+ // For each text layer, add elements marked as active that haven't
+ // already been rendered, and remove those that are no longer active.
+
+ for (var layerKey in cache) {
+ if (hasOwnProperty.call(cache, layerKey)) {
+
+ var layer = this.getTextLayer(layerKey),
+ layerCache = cache[layerKey];
+
+ layer.hide();
+
+ for (var styleKey in layerCache) {
+ if (hasOwnProperty.call(layerCache, styleKey)) {
+ var styleCache = layerCache[styleKey];
+ for (var key in styleCache) {
+ if (hasOwnProperty.call(styleCache, key)) {
+
+ var positions = styleCache[key].positions;
+
+ for (var i = 0, position; position = positions[i]; i++) {
+ if (position.active) {
+ if (!position.rendered) {
+ layer.append(position.element);
+ position.rendered = true;
+ }
+ } else {
+ positions.splice(i--, 1);
+ if (position.rendered) {
+ position.element.detach();
+ }
+ }
+ }
+
+ if (positions.length == 0) {
+ delete styleCache[key];
+ }
+ }
+ }
+ }
+ }
+
+ layer.show();
+ }
+ }
+ };
+
+ // Creates (if necessary) and returns the text overlay container.
+ //
+ // @param {string} classes String of space-separated CSS classes used to
+ // uniquely identify the text layer.
+ // @return {object} The jQuery-wrapped text-layer div.
+
+ Canvas.prototype.getTextLayer = function(classes) {
+
+ var layer = this.text[classes];
+
+ // Create the text layer if it doesn't exist
+
+ if (layer == null) {
+
+ // Create the text layer container, if it doesn't exist
+
+ if (this.textContainer == null) {
+ this.textContainer = $("<div class='flot-text'></div>")
+ .css({
+ position: "absolute",
+ top: 0,
+ left: 0,
+ bottom: 0,
+ right: 0,
+ 'font-size': "smaller",
+ color: "#545454"
+ })
+ .insertAfter(this.element);
+ }
+
+ layer = this.text[classes] = $("<div></div>")
+ .addClass(classes)
+ .css({
+ position: "absolute",
+ top: 0,
+ left: 0,
+ bottom: 0,
+ right: 0
+ })
+ .appendTo(this.textContainer);
+ }
+
+ return layer;
+ };
+
+ // Creates (if necessary) and returns a text info object.
+ //
+ // The object looks like this:
+ //
+ // {
+ // width: Width of the text's wrapper div.
+ // height: Height of the text's wrapper div.
+ // element: The jQuery-wrapped HTML div containing the text.
+ // positions: Array of positions at which this text is drawn.
+ // }
+ //
+ // The positions array contains objects that look like this:
+ //
+ // {
+ // active: Flag indicating whether the text should be visible.
+ // rendered: Flag indicating whether the text is currently visible.
+ // element: The jQuery-wrapped HTML div containing the text.
+ // x: X coordinate at which to draw the text.
+ // y: Y coordinate at which to draw the text.
+ // }
+ //
+ // Each position after the first receives a clone of the original element.
+ //
+ // The idea is that that the width, height, and general 'identity' of the
+ // text is constant no matter where it is placed; the placements are a
+ // secondary property.
+ //
+ // Canvas maintains a cache of recently-used text info objects; getTextInfo
+ // either returns the cached element or creates a new entry.
+ //
+ // @param {string} layer A string of space-separated CSS classes uniquely
+ // identifying the layer containing this text.
+ // @param {string} text Text string to retrieve info for.
+ // @param {(string|object)=} font Either a string of space-separated CSS
+ // classes or a font-spec object, defining the text's font and style.
+ // @param {number=} angle Angle at which to rotate the text, in degrees.
+ // Angle is currently unused, it will be implemented in the future.
+ // @param {number=} width Maximum width of the text before it wraps.
+ // @return {object} a text info object.
+
+ Canvas.prototype.getTextInfo = function(layer, text, font, angle, width) {
+
+ var textStyle, layerCache, styleCache, info;
+
+ // Cast the value to a string, in case we were given a number or such
+
+ text = "" + text;
+
+ // If the font is a font-spec object, generate a CSS font definition
+
+ if (typeof font === "object") {
+ textStyle = font.style + " " + font.variant + " " + font.weight + " " + font.size + "px/" + font.lineHeight + "px " + font.family;
+ } else {
+ textStyle = font;
+ }
+
+ // Retrieve (or create) the cache for the text's layer and styles
+
+ layerCache = this._textCache[layer];
+
+ if (layerCache == null) {
+ layerCache = this._textCache[layer] = {};
+ }
+
+ styleCache = layerCache[textStyle];
+
+ if (styleCache == null) {
+ styleCache = layerCache[textStyle] = {};
+ }
+
+ info = styleCache[text];
+
+ // If we can't find a matching element in our cache, create a new one
+
+ if (info == null) {
+
+ var element = $("<div></div>").html(text)
+ .css({
+ position: "absolute",
+ 'max-width': width,
+ top: -9999
+ })
+ .appendTo(this.getTextLayer(layer));
+
+ if (typeof font === "object") {
+ element.css({
+ font: textStyle,
+ color: font.color
+ });
+ } else if (typeof font === "string") {
+ element.addClass(font);
+ }
+
+ info = styleCache[text] = {
+ width: element.outerWidth(true),
+ height: element.outerHeight(true),
+ element: element,
+ positions: []
+ };
+
+ element.detach();
+ }
+
+ return info;
+ };
+
+ // Adds a text string to the canvas text overlay.
+ //
+ // The text isn't drawn immediately; it is marked as rendering, which will
+ // result in its addition to the canvas on the next render pass.
+ //
+ // @param {string} layer A string of space-separated CSS classes uniquely
+ // identifying the layer containing this text.
+ // @param {number} x X coordinate at which to draw the text.
+ // @param {number} y Y coordinate at which to draw the text.
+ // @param {string} text Text string to draw.
+ // @param {(string|object)=} font Either a string of space-separated CSS
+ // classes or a font-spec object, defining the text's font and style.
+ // @param {number=} angle Angle at which to rotate the text, in degrees.
+ // Angle is currently unused, it will be implemented in the future.
+ // @param {number=} width Maximum width of the text before it wraps.
+ // @param {string=} halign Horizontal alignment of the text; either "left",
+ // "center" or "right".
+ // @param {string=} valign Vertical alignment of the text; either "top",
+ // "middle" or "bottom".
+
+ Canvas.prototype.addText = function(layer, x, y, text, font, angle, width, halign, valign) {
+
+ var info = this.getTextInfo(layer, text, font, angle, width),
+ positions = info.positions;
+
+ // Tweak the div's position to match the text's alignment
+
+ if (halign == "center") {
+ x -= info.width / 2;
+ } else if (halign == "right") {
+ x -= info.width;
+ }
+
+ if (valign == "middle") {
+ y -= info.height / 2;
+ } else if (valign == "bottom") {
+ y -= info.height;
+ }
+
+ // Determine whether this text already exists at this position.
+ // If so, mark it for inclusion in the next render pass.
+
+ for (var i = 0, position; position = positions[i]; i++) {
+ if (position.x == x && position.y == y) {
+ position.active = true;
+ return;
+ }
+ }
+
+ // If the text doesn't exist at this position, create a new entry
+
+ // For the very first position we'll re-use the original element,
+ // while for subsequent ones we'll clone it.
+
+ position = {
+ active: true,
+ rendered: false,
+ element: positions.length ? info.element.clone() : info.element,
+ x: x,
+ y: y
+ };
+
+ positions.push(position);
+
+ // Move the element to its final position within the container
+
+ position.element.css({
+ top: Math.round(y),
+ left: Math.round(x),
+ 'text-align': halign // In case the text wraps
+ });
+ };
+
+ // Removes one or more text strings from the canvas text overlay.
+ //
+ // If no parameters are given, all text within the layer is removed.
+ //
+ // Note that the text is not immediately removed; it is simply marked as
+ // inactive, which will result in its removal on the next render pass.
+ // This avoids the performance penalty for 'clear and redraw' behavior,
+ // where we potentially get rid of all text on a layer, but will likely
+ // add back most or all of it later, as when redrawing axes, for example.
+ //
+ // @param {string} layer A string of space-separated CSS classes uniquely
+ // identifying the layer containing this text.
+ // @param {number=} x X coordinate of the text.
+ // @param {number=} y Y coordinate of the text.
+ // @param {string=} text Text string to remove.
+ // @param {(string|object)=} font Either a string of space-separated CSS
+ // classes or a font-spec object, defining the text's font and style.
+ // @param {number=} angle Angle at which the text is rotated, in degrees.
+ // Angle is currently unused, it will be implemented in the future.
+
+ Canvas.prototype.removeText = function(layer, x, y, text, font, angle) {
+ if (text == null) {
+ var layerCache = this._textCache[layer];
+ if (layerCache != null) {
+ for (var styleKey in layerCache) {
+ if (hasOwnProperty.call(layerCache, styleKey)) {
+ var styleCache = layerCache[styleKey];
+ for (var key in styleCache) {
+ if (hasOwnProperty.call(styleCache, key)) {
+ var positions = styleCache[key].positions;
+ for (var i = 0, position; position = positions[i]; i++) {
+ position.active = false;
+ }
+ }
+ }
+ }
+ }
+ }
+ } else {
+ var positions = this.getTextInfo(layer, text, font, angle).positions;
+ for (var i = 0, position; position = positions[i]; i++) {
+ if (position.x == x && position.y == y) {
+ position.active = false;
+ }
+ }
+ }
+ };
+
+ ///////////////////////////////////////////////////////////////////////////
+ // The top-level container for the entire plot.
+
function Plot(placeholder, data_, options_, plugins) {
// data is on the form:
// [ series1, series2 ... ]
// where series is either just the data as [ [x1, y1], [x2, y2], ... ]
// or { data: [ [x1, y1], [x2, y2], ... ], label: "some label", ... }
-
+
var series = [],
options = {
// the color theme used for graphs
position: "ne", // position of default legend container within plot
margin: 5, // distance from grid edge to default legend container within plot
backgroundColor: null, // null means auto-detect
- backgroundOpacity: 0.85 // set to 0 to avoid background
+ backgroundOpacity: 0.85, // set to 0 to avoid background
+ sorted: null // default to no legend sorting
},
xaxis: {
show: null, // null = auto-detect, true = always, false = never
position: "bottom", // or "top"
mode: null, // null or "time"
+ font: null, // null (derived from CSS in placeholder) or object like { size: 11, lineHeight: 13, style: "italic", weight: "bold", family: "sans-serif", variant: "small-caps" }
color: null, // base color, labels, ticks
tickColor: null, // possibly different color of ticks, e.g. "rgba(0,0,0,0.15)"
transform: null, // null or f: number -> number to transform axis
reserveSpace: null, // whether to reserve space even if axis isn't shown
tickLength: null, // size in pixels of ticks, or "full" for whole line
alignTicksWithAxis: null, // axis number or null for no sync
-
- // mode specific options
tickDecimals: null, // no. of decimals, null means auto
tickSize: null, // number or [number, "unit"]
- minTickSize: null, // number or [number, "unit"]
- monthNames: null, // list of names of months
- timeformat: null, // format string to use
- twelveHourClock: false // 12 or 24 time in time mode
+ minTickSize: null // number or [number, "unit"]
},
yaxis: {
autoscaleMargin: 0.02,
},
lines: {
// we don't put in show: false so we can see
- // whether lines were actively disabled
+ // whether lines were actively disabled
lineWidth: 2, // in pixels
fill: false,
fillColor: null,
steps: false
+ // Omit 'zero', so we can later default its value to
+ // match that of the 'fill' option.
},
bars: {
show: false,
barWidth: 1, // in units of the x axis
fill: true,
fillColor: null,
- align: "left", // or "center"
- horizontal: false
+ align: "left", // "left", "right", or "center"
+ horizontal: false,
+ zero: true
},
- shadowSize: 3
+ shadowSize: 3,
+ highlightColor: null
},
grid: {
show: true,
backgroundColor: null, // null for transparent, else color
borderColor: null, // set if different from the grid color
tickColor: null, // color for the ticks, e.g. "rgba(0,0,0,0.15)"
+ margin: 0, // distance from the canvas edge to the grid
labelMargin: 5, // in pixels
axisMargin: 8, // in pixels
borderWidth: 2, // in pixels
autoHighlight: true, // highlight in case mouse is near
mouseActiveRadius: 10 // how far the mouse can be away to activate an item
},
+ interaction: {
+ redrawOverlayInterval: 1000/60 // time between updates, -1 means in same flow
+ },
hooks: {}
},
- canvas = null, // the canvas for the plot itself
+ surface = null, // the canvas for the plot itself
overlay = null, // canvas for interactive stuff on top of plot
eventHolder = null, // jQuery object that events should be bound to
ctx = null, octx = null,
xaxes = [], yaxes = [],
plotOffset = { left: 0, right: 0, top: 0, bottom: 0},
- canvasWidth = 0, canvasHeight = 0,
plotWidth = 0, plotHeight = 0,
hooks = {
processOptions: [],
processRawData: [],
processDatapoints: [],
+ processOffset: [],
+ drawBackground: [],
drawSeries: [],
draw: [],
bindEvents: [],
plot.setupGrid = setupGrid;
plot.draw = draw;
plot.getPlaceholder = function() { return placeholder; };
- plot.getCanvas = function() { return canvas; };
+ plot.getCanvas = function() { return surface.element; };
plot.getPlotOffset = function() { return plotOffset; };
plot.width = function () { return plotWidth; };
plot.height = function () { return plotHeight; };
plot.triggerRedrawOverlay = triggerRedrawOverlay;
plot.pointOffset = function(point) {
return {
- left: parseInt(xaxes[axisNumber(point, "x") - 1].p2c(+point.x) + plotOffset.left),
- top: parseInt(yaxes[axisNumber(point, "y") - 1].p2c(+point.y) + plotOffset.top)
+ left: parseInt(xaxes[axisNumber(point, "x") - 1].p2c(+point.x) + plotOffset.left, 10),
+ top: parseInt(yaxes[axisNumber(point, "y") - 1].p2c(+point.y) + plotOffset.top, 10)
};
};
plot.shutdown = shutdown;
+ plot.destroy = function () {
+ shutdown();
+ placeholder.removeData("plot").empty();
+
+ series = [];
+ options = null;
+ surface = null;
+ overlay = null;
+ eventHolder = null;
+ ctx = null;
+ octx = null;
+ xaxes = [];
+ yaxes = [];
+ hooks = null;
+ highlights = [];
+ plot = null;
+ };
plot.resize = function () {
- getCanvasDimensions();
- resizeCanvas(canvas);
- resizeCanvas(overlay);
+ var width = placeholder.width(),
+ height = placeholder.height();
+ surface.resize(width, height);
+ overlay.resize(width, height);
};
// public attributes
plot.hooks = hooks;
-
+
// initialize
initPlugins(plot);
parseOptions(options_);
}
function initPlugins() {
+
+ // References to key classes, allowing plugins to modify them
+
+ var classes = {
+ Canvas: Canvas
+ };
+
for (var i = 0; i < plugins.length; ++i) {
var p = plugins[i];
- p.init(plot);
+ p.init(plot, classes);
if (p.options)
$.extend(true, options, p.options);
}
}
-
+
function parseOptions(opts) {
- var i;
-
+
$.extend(true, options, opts);
-
+
+ // $.extend merges arrays, rather than replacing them. When less
+ // colors are provided than the size of the default palette, we
+ // end up with those colors plus the remaining defaults, which is
+ // not expected behavior; avoid it by replacing them here.
+
+ if (opts && opts.colors) {
+ options.colors = opts.colors;
+ }
+
if (options.xaxis.color == null)
- options.xaxis.color = options.grid.color;
+ options.xaxis.color = $.color.parse(options.grid.color).scale('a', 0.22).toString();
if (options.yaxis.color == null)
- options.yaxis.color = options.grid.color;
-
- if (options.xaxis.tickColor == null) // backwards-compatibility
- options.xaxis.tickColor = options.grid.tickColor;
- if (options.yaxis.tickColor == null) // backwards-compatibility
- options.yaxis.tickColor = options.grid.tickColor;
+ options.yaxis.color = $.color.parse(options.grid.color).scale('a', 0.22).toString();
+
+ if (options.xaxis.tickColor == null) // grid.tickColor for back-compatibility
+ options.xaxis.tickColor = options.grid.tickColor || options.xaxis.color;
+ if (options.yaxis.tickColor == null) // grid.tickColor for back-compatibility
+ options.yaxis.tickColor = options.grid.tickColor || options.yaxis.color;
if (options.grid.borderColor == null)
options.grid.borderColor = options.grid.color;
if (options.grid.tickColor == null)
options.grid.tickColor = $.color.parse(options.grid.color).scale('a', 0.22).toString();
-
- // fill in defaults in axes, copy at least always the
- // first as the rest of the code assumes it'll be there
- for (i = 0; i < Math.max(1, options.xaxes.length); ++i)
- options.xaxes[i] = $.extend(true, {}, options.xaxis, options.xaxes[i]);
- for (i = 0; i < Math.max(1, options.yaxes.length); ++i)
- options.yaxes[i] = $.extend(true, {}, options.yaxis, options.yaxes[i]);
+
+ // Fill in defaults for axis options, including any unspecified
+ // font-spec fields, if a font-spec was provided.
+
+ // If no x/y axis options were provided, create one of each anyway,
+ // since the rest of the code assumes that they exist.
+
+ var i, axisOptions, axisCount,
+ fontSize = placeholder.css("font-size"),
+ fontSizeDefault = fontSize ? +fontSize.replace("px", "") : 13,
+ fontDefaults = {
+ style: placeholder.css("font-style"),
+ size: Math.round(0.8 * fontSizeDefault),
+ variant: placeholder.css("font-variant"),
+ weight: placeholder.css("font-weight"),
+ family: placeholder.css("font-family")
+ };
+
+ axisCount = options.xaxes.length || 1;
+ for (i = 0; i < axisCount; ++i) {
+
+ axisOptions = options.xaxes[i];
+ if (axisOptions && !axisOptions.tickColor) {
+ axisOptions.tickColor = axisOptions.color;
+ }
+
+ axisOptions = $.extend(true, {}, options.xaxis, axisOptions);
+ options.xaxes[i] = axisOptions;
+
+ if (axisOptions.font) {
+ axisOptions.font = $.extend({}, fontDefaults, axisOptions.font);
+ if (!axisOptions.font.color) {
+ axisOptions.font.color = axisOptions.color;
+ }
+ if (!axisOptions.font.lineHeight) {
+ axisOptions.font.lineHeight = Math.round(axisOptions.font.size * 1.15);
+ }
+ }
+ }
+
+ axisCount = options.yaxes.length || 1;
+ for (i = 0; i < axisCount; ++i) {
+
+ axisOptions = options.yaxes[i];
+ if (axisOptions && !axisOptions.tickColor) {
+ axisOptions.tickColor = axisOptions.color;
+ }
+
+ axisOptions = $.extend(true, {}, options.yaxis, axisOptions);
+ options.yaxes[i] = axisOptions;
+
+ if (axisOptions.font) {
+ axisOptions.font = $.extend({}, fontDefaults, axisOptions.font);
+ if (!axisOptions.font.color) {
+ axisOptions.font.color = axisOptions.color;
+ }
+ if (!axisOptions.font.lineHeight) {
+ axisOptions.font.lineHeight = Math.round(axisOptions.font.size * 1.15);
+ }
+ }
+ }
// backwards compatibility, to be removed in future
if (options.xaxis.noTicks && options.xaxis.ticks == null)
if (options.x2axis) {
options.xaxes[1] = $.extend(true, {}, options.xaxis, options.x2axis);
options.xaxes[1].position = "top";
+ // Override the inherit to allow the axis to auto-scale
+ if (options.x2axis.min == null) {
+ options.xaxes[1].min = null;
+ }
+ if (options.x2axis.max == null) {
+ options.xaxes[1].max = null;
+ }
}
if (options.y2axis) {
options.yaxes[1] = $.extend(true, {}, options.yaxis, options.y2axis);
options.yaxes[1].position = "right";
+ // Override the inherit to allow the axis to auto-scale
+ if (options.y2axis.min == null) {
+ options.yaxes[1].min = null;
+ }
+ if (options.y2axis.max == null) {
+ options.yaxes[1].max = null;
+ }
}
if (options.grid.coloredAreas)
options.grid.markings = options.grid.coloredAreas;
$.extend(true, options.series.bars, options.bars);
if (options.shadowSize != null)
options.series.shadowSize = options.shadowSize;
+ if (options.highlightColor != null)
+ options.series.highlightColor = options.highlightColor;
// save options on axes for future reference
for (i = 0; i < options.xaxes.length; ++i)
fillInSeriesOptions();
processData();
}
-
+
function parseData(d) {
var res = [];
for (var i = 0; i < d.length; ++i) {
return res;
}
-
+
function axisNumber(obj, coord) {
var a = obj[coord + "axis"];
if (typeof a == "object") // if we got a real axis, extract number
// return flat array without annoying null entries
return $.grep(xaxes.concat(yaxes), function (a) { return a; });
}
-
+
function canvasToAxisCoords(pos) {
- // return an object with x/y corresponding to all used axes
+ // return an object with x/y corresponding to all used axes
var res = {}, i, axis;
for (i = 0; i < xaxes.length; ++i) {
axis = xaxes[i];
if (axis && axis.used)
res["y" + axis.n] = axis.c2p(pos.top);
}
-
+
if (res.x1 !== undefined)
res.x = res.x1;
if (res.y1 !== undefined)
return res;
}
-
+
function axisToCanvasCoords(pos) {
// get canvas coords from the first pair of x/y found in pos
var res = {}, i, axis, key;
}
}
}
-
+
for (i = 0; i < yaxes.length; ++i) {
axis = yaxes[i];
if (axis && axis.used) {
}
}
}
-
+
return res;
}
-
+
function getOrCreateAxis(axes, number) {
if (!axes[number - 1])
axes[number - 1] = {
direction: axes == xaxes ? "x" : "y",
options: $.extend(true, {}, axes == xaxes ? options.xaxis : options.yaxis)
};
-
+
return axes[number - 1];
}
function fillInSeriesOptions() {
- var i;
-
- // collect what we already got of colors
- var neededColors = series.length,
- usedColors = [],
- assignedColors = [];
+
+ var neededColors = series.length, maxIndex = -1, i;
+
+ // Subtract the number of series that already have fixed colors or
+ // color indexes from the number that we still need to generate.
+
for (i = 0; i < series.length; ++i) {
var sc = series[i].color;
if (sc != null) {
- --neededColors;
- if (typeof sc == "number")
- assignedColors.push(sc);
- else
- usedColors.push($.color.parse(series[i].color));
+ neededColors--;
+ if (typeof sc == "number" && sc > maxIndex) {
+ maxIndex = sc;
+ }
}
}
-
- // we might need to generate more colors if higher indices
- // are assigned
- for (i = 0; i < assignedColors.length; ++i) {
- neededColors = Math.max(neededColors, assignedColors[i] + 1);
+
+ // If any of the series have fixed color indexes, then we need to
+ // generate at least as many colors as the highest index.
+
+ if (neededColors <= maxIndex) {
+ neededColors = maxIndex + 1;
}
- // produce colors as needed
- var colors = [], variation = 0;
- i = 0;
- while (colors.length < neededColors) {
- var c;
- if (options.colors.length == i) // check degenerate case
- c = $.color.make(100, 100, 100);
- else
- c = $.color.parse(options.colors[i]);
-
- // vary color if needed
- var sign = variation % 2 == 1 ? -1 : 1;
- c.scale('rgb', 1 + sign * Math.ceil(variation / 2) * 0.2)
-
- // FIXME: if we're getting to close to something else,
- // we should probably skip this one
- colors.push(c);
-
- ++i;
- if (i >= options.colors.length) {
- i = 0;
- ++variation;
+ // Generate all the colors, using first the option colors and then
+ // variations on those colors once they're exhausted.
+
+ var c, colors = [], colorPool = options.colors,
+ colorPoolSize = colorPool.length, variation = 0;
+
+ for (i = 0; i < neededColors; i++) {
+
+ c = $.color.parse(colorPool[i % colorPoolSize] || "#666");
+
+ // Each time we exhaust the colors in the pool we adjust
+ // a scaling factor used to produce more variations on
+ // those colors. The factor alternates negative/positive
+ // to produce lighter/darker colors.
+
+ // Reset the variation after every few cycles, or else
+ // it will end up producing only white or black colors.
+
+ if (i % colorPoolSize == 0 && i) {
+ if (variation >= 0) {
+ if (variation < 0.5) {
+ variation = -variation - 0.2;
+ } else variation = 0;
+ } else variation = -variation;
}
+
+ colors[i] = c.scale('rgb', 1 + variation);
}
- // fill in the options
+ // Finalize the series options, filling in their colors
+
var colori = 0, s;
for (i = 0; i < series.length; ++i) {
s = series[i];
-
+
// assign colors
if (s.color == null) {
s.color = colors[colori].toString();
s.lines.show = true;
}
+ // If nothing was provided for lines.zero, default it to match
+ // lines.fill, since areas by default should extend to zero.
+
+ if (s.lines.zero == null) {
+ s.lines.zero = !!s.lines.fill;
+ }
+
// setup axes
s.xaxis = getOrCreateAxis(xaxes, axisNumber(s, "x"));
s.yaxis = getOrCreateAxis(yaxes, axisNumber(s, "y"));
}
}
-
+
function processData() {
var topSentry = Number.POSITIVE_INFINITY,
bottomSentry = Number.NEGATIVE_INFINITY,
fakeInfinity = Number.MAX_VALUE,
i, j, k, m, length,
- s, points, ps, x, y, axis, val, f, p;
+ s, points, ps, x, y, axis, val, f, p,
+ data, format;
function updateAxis(axis, min, max) {
if (min < axis.datamin && min != -fakeInfinity)
axis.datamax = bottomSentry;
axis.used = false;
});
-
+
for (i = 0; i < series.length; ++i) {
s = series[i];
s.datapoints = { points: [] };
-
+
executeHooks(hooks.processRawData, [ s, s.data, s.datapoints ]);
}
-
+
// first pass: clean and copy data
for (i = 0; i < series.length; ++i) {
s = series[i];
- var data = s.data, format = s.datapoints.format;
+ data = s.data;
+ format = s.datapoints.format;
if (!format) {
format = [];
format.push({ y: true, number: true, required: true });
if (s.bars.show || (s.lines.show && s.lines.fill)) {
- format.push({ y: true, number: true, required: false, defaultValue: 0 });
+ var autoscale = !!((s.bars.show && s.bars.zero) || (s.lines.show && s.lines.zero));
+ format.push({ y: true, number: true, required: false, defaultValue: 0, autoscale: autoscale });
if (s.bars.horizontal) {
delete format[format.length - 1].y;
format[format.length - 1].x = true;
}
}
-
+
s.datapoints.format = format;
}
continue; // already filled in
s.datapoints.pointsize = format.length;
-
+
ps = s.datapoints.pointsize;
points = s.datapoints.points;
- insertSteps = s.lines.show && s.lines.steps;
+ var insertSteps = s.lines.show && s.lines.steps;
s.xaxis.used = s.yaxis.used = true;
-
+
for (j = k = 0; j < data.length; ++j, k += ps) {
p = data[j];
if (val == null) {
if (f.required)
nullify = true;
-
+
if (f.defaultValue != null)
val = f.defaultValue;
}
}
-
+
points[k + m] = val;
}
}
-
+
if (nullify) {
for (m = 0; m < ps; ++m) {
val = points[k + m];
if (val != null) {
f = format[m];
// extract min/max info
- if (f.x)
- updateAxis(s.xaxis, val, val);
- if (f.y)
- updateAxis(s.yaxis, val, val);
+ if (f.autoscale !== false) {
+ if (f.x) {
+ updateAxis(s.xaxis, val, val);
+ }
+ if (f.y) {
+ updateAxis(s.yaxis, val, val);
+ }
+ }
}
points[k + m] = null;
}
// give the hooks a chance to run
for (i = 0; i < series.length; ++i) {
s = series[i];
-
+
executeHooks(hooks.processDatapoints, [ s, s.datapoints]);
}
// second pass: find datamax/datamin for auto-scaling
for (i = 0; i < series.length; ++i) {
s = series[i];
- points = s.datapoints.points,
+ points = s.datapoints.points;
ps = s.datapoints.pointsize;
+ format = s.datapoints.format;
var xmin = topSentry, ymin = topSentry,
xmax = bottomSentry, ymax = bottomSentry;
-
+
for (j = 0; j < points.length; j += ps) {
if (points[j] == null)
continue;
for (m = 0; m < ps; ++m) {
val = points[j + m];
f = format[m];
- if (!f || val == fakeInfinity || val == -fakeInfinity)
+ if (!f || f.autoscale === false || val == fakeInfinity || val == -fakeInfinity)
continue;
-
+
if (f.x) {
if (val < xmin)
xmin = val;
}
}
}
-
+
if (s.bars.show) {
// make sure we got room for the bar on the dancing floor
- var delta = s.bars.align == "left" ? 0 : -s.bars.barWidth/2;
+ var delta;
+
+ switch (s.bars.align) {
+ case "left":
+ delta = 0;
+ break;
+ case "right":
+ delta = -s.bars.barWidth;
+ break;
+ default:
+ delta = -s.bars.barWidth / 2;
+ }
+
if (s.bars.horizontal) {
ymin += delta;
ymax += delta + s.bars.barWidth;
xmax += delta + s.bars.barWidth;
}
}
-
+
updateAxis(s.xaxis, xmin, xmax);
updateAxis(s.yaxis, ymin, ymax);
}
});
}
- function makeCanvas(skipPositioning, cls) {
- var c = document.createElement('canvas');
- c.className = cls;
- c.width = canvasWidth;
- c.height = canvasHeight;
-
- if (!skipPositioning)
- $(c).css({ position: 'absolute', left: 0, top: 0 });
-
- $(c).appendTo(placeholder);
-
- if (!c.getContext) // excanvas hack
- c = window.G_vmlCanvasManager.initElement(c);
-
- // used for resetting in case we get replotted
- c.getContext("2d").save();
-
- return c;
- }
-
- function getCanvasDimensions() {
- canvasWidth = placeholder.width();
- canvasHeight = placeholder.height();
-
- if (canvasWidth <= 0 || canvasHeight <= 0)
- throw "Invalid dimensions for plot, width = " + canvasWidth + ", height = " + canvasHeight;
- }
-
- function resizeCanvas(c) {
- // resizing should reset the state (excanvas seems to be
- // buggy though)
- if (c.width != canvasWidth)
- c.width = canvasWidth;
+ function setupCanvases() {
- if (c.height != canvasHeight)
- c.height = canvasHeight;
+ // Make sure the placeholder is clear of everything except canvases
+ // from a previous plot in this container that we'll try to re-use.
- // so try to get back to the initial state (even if it's
- // gone now, this should be safe according to the spec)
- var cctx = c.getContext("2d");
- cctx.restore();
+ placeholder.css("padding", 0) // padding messes up the positioning
+ .children().filter(function(){
+ return !$(this).hasClass("flot-overlay") && !$(this).hasClass('flot-base');
+ }).remove();
- // and save again
- cctx.save();
- }
-
- function setupCanvases() {
- var reused,
- existingCanvas = placeholder.children("canvas.base"),
- existingOverlay = placeholder.children("canvas.overlay");
-
- if (existingCanvas.length == 0 || existingOverlay == 0) {
- // init everything
-
- placeholder.html(""); // make sure placeholder is clear
-
- placeholder.css({ padding: 0 }); // padding messes up the positioning
-
- if (placeholder.css("position") == 'static')
- placeholder.css("position", "relative"); // for positioning labels and overlay
-
- getCanvasDimensions();
-
- canvas = makeCanvas(true, "base");
- overlay = makeCanvas(false, "overlay"); // overlay canvas for interactive features
-
- reused = false;
- }
- else {
- // reuse existing elements
+ if (placeholder.css("position") == 'static')
+ placeholder.css("position", "relative"); // for positioning labels and overlay
- canvas = existingCanvas.get(0);
- overlay = existingOverlay.get(0);
+ surface = new Canvas("flot-base", placeholder);
+ overlay = new Canvas("flot-overlay", placeholder); // overlay canvas for interactive features
- reused = true;
- }
+ ctx = surface.context;
+ octx = overlay.context;
- ctx = canvas.getContext("2d");
- octx = overlay.getContext("2d");
+ // define which element we're listening for events on
+ eventHolder = $(overlay.element).off();
- // we include the canvas in the event holder too, because IE 7
- // sometimes has trouble with the stacking order
- eventHolder = $([overlay, canvas]);
+ // If we're re-using a plot object, shut down the old one
- if (reused) {
- // run shutdown in the old plot object
- placeholder.data("plot").shutdown();
+ var existing = placeholder.data("plot");
- // reset reused canvases
- plot.resize();
-
- // make sure overlay pixels are cleared (canvas is cleared when we redraw)
- octx.clearRect(0, 0, canvasWidth, canvasHeight);
-
- // then whack any remaining obvious garbage left
- eventHolder.unbind();
- placeholder.children().not([canvas, overlay]).remove();
+ if (existing) {
+ existing.shutdown();
+ overlay.clear();
}
// save in case we get replotted
// bind events
if (options.grid.hoverable) {
eventHolder.mousemove(onMouseMove);
- eventHolder.mouseleave(onMouseLeave);
+
+ // Use bind, rather than .mouseleave, because we officially
+ // still support jQuery 1.2.6, which doesn't define a shortcut
+ // for mouseenter or mouseleave. This was a bug/oversight that
+ // was fixed somewhere around 1.3.x. We can return to using
+ // .mouseleave when we drop support for 1.2.6.
+
+ eventHolder.on("mouseleave", onMouseLeave);
}
if (options.grid.clickable)
function shutdown() {
if (redrawTimeout)
clearTimeout(redrawTimeout);
-
- eventHolder.unbind("mousemove", onMouseMove);
- eventHolder.unbind("mouseleave", onMouseLeave);
- eventHolder.unbind("click", onClick);
-
+
+ eventHolder.off("mousemove", onMouseMove);
+ eventHolder.off("mouseleave", onMouseLeave);
+ eventHolder.off("click", onClick);
+
executeHooks(hooks.shutdown, [eventHolder]);
}
function setTransformationHelpers(axis) {
// set helper functions on the axis, assumes plot area
// has been computed already
-
+
function identity(x) { return x; }
-
+
var s, m, t = axis.options.transform || identity,
it = axis.options.inverseTransform;
-
+
// precompute how much the axis is scaling a point
// in canvas space
if (axis.direction == "x") {
}
function measureTickLabels(axis) {
- var opts = axis.options, i, ticks = axis.ticks || [], labels = [],
- l, w = opts.labelWidth, h = opts.labelHeight, dummyDiv;
- function makeDummyDiv(labels, width) {
- return $('<div style="position:absolute;top:-10000px;' + width + 'font-size:smaller">' +
- '<div class="' + axis.direction + 'Axis ' + axis.direction + axis.n + 'Axis">'
- + labels.join("") + '</div></div>')
- .appendTo(placeholder);
- }
-
- if (axis.direction == "x") {
- // to avoid measuring the widths of the labels (it's slow), we
- // construct fixed-size boxes and put the labels inside
- // them, we don't need the exact figures and the
- // fixed-size box content is easy to center
- if (w == null)
- w = Math.floor(canvasWidth / (ticks.length > 0 ? ticks.length : 1));
-
- // measure x label heights
- if (h == null) {
- labels = [];
- for (i = 0; i < ticks.length; ++i) {
- l = ticks[i].label;
- if (l)
- labels.push('<div class="tickLabel" style="float:left;width:' + w + 'px">' + l + '</div>');
- }
-
- if (labels.length > 0) {
- // stick them all in the same div and measure
- // collective height
- labels.push('<div style="clear:left"></div>');
- dummyDiv = makeDummyDiv(labels, "width:10000px;");
- h = dummyDiv.height();
- dummyDiv.remove();
- }
- }
- }
- else if (w == null || h == null) {
- // calculate y label dimensions
- for (i = 0; i < ticks.length; ++i) {
- l = ticks[i].label;
- if (l)
- labels.push('<div class="tickLabel">' + l + '</div>');
- }
-
- if (labels.length > 0) {
- dummyDiv = makeDummyDiv(labels, "");
- if (w == null)
- w = dummyDiv.children().width();
- if (h == null)
- h = dummyDiv.find("div.tickLabel").height();
- dummyDiv.remove();
- }
- }
+ var opts = axis.options,
+ ticks = axis.ticks || [],
+ labelWidth = opts.labelWidth || 0,
+ labelHeight = opts.labelHeight || 0,
+ maxWidth = labelWidth || (axis.direction == "x" ? Math.floor(surface.width / (ticks.length || 1)) : null),
+ legacyStyles = axis.direction + "Axis " + axis.direction + axis.n + "Axis",
+ layer = "flot-" + axis.direction + "-axis flot-" + axis.direction + axis.n + "-axis " + legacyStyles,
+ font = opts.font || "flot-tick-label tickLabel";
+
+ for (var i = 0; i < ticks.length; ++i) {
+
+ var t = ticks[i];
+
+ if (!t.label)
+ continue;
+
+ var info = surface.getTextInfo(layer, t.label, font, null, maxWidth);
- if (w == null)
- w = 0;
- if (h == null)
- h = 0;
+ labelWidth = Math.max(labelWidth, info.width);
+ labelHeight = Math.max(labelHeight, info.height);
+ }
- axis.labelWidth = w;
- axis.labelHeight = h;
+ axis.labelWidth = opts.labelWidth || labelWidth;
+ axis.labelHeight = opts.labelHeight || labelHeight;
}
function allocateAxisBoxFirstPhase(axis) {
// find the bounding box of the axis by looking at label
// widths/heights and ticks, make room by diminishing the
- // plotOffset
+ // plotOffset; this first phase only looks at one
+ // dimension per axis, the other dimension depends on the
+ // other axes so will have to wait
var lw = axis.labelWidth,
lh = axis.labelHeight,
pos = axis.options.position,
+ isXAxis = axis.direction === "x",
tickLength = axis.options.tickLength,
- axismargin = options.grid.axisMargin,
+ axisMargin = options.grid.axisMargin,
padding = options.grid.labelMargin,
- all = axis.direction == "x" ? xaxes : yaxes,
- index;
-
- // determine axis margin
- var samePosition = $.grep(all, function (a) {
- return a && a.options.position == pos && a.reserveSpace;
+ innermost = true,
+ outermost = true,
+ first = true,
+ found = false;
+
+ // Determine the axis's position in its direction and on its side
+
+ $.each(isXAxis ? xaxes : yaxes, function(i, a) {
+ if (a && (a.show || a.reserveSpace)) {
+ if (a === axis) {
+ found = true;
+ } else if (a.options.position === pos) {
+ if (found) {
+ outermost = false;
+ } else {
+ innermost = false;
+ }
+ }
+ if (!found) {
+ first = false;
+ }
+ }
});
- if ($.inArray(axis, samePosition) == samePosition.length - 1)
- axismargin = 0; // outermost
- // determine tick length - if we're innermost, we can use "full"
- if (tickLength == null)
- tickLength = "full";
+ // The outermost axis on each side has no margin
- var sameDirection = $.grep(all, function (a) {
- return a && a.reserveSpace;
- });
+ if (outermost) {
+ axisMargin = 0;
+ }
+
+ // The ticks for the first axis in each direction stretch across
+
+ if (tickLength == null) {
+ tickLength = first ? "full" : 5;
+ }
- var innermost = $.inArray(axis, sameDirection) == 0;
- if (!innermost && tickLength == "full")
- tickLength = 5;
-
if (!isNaN(+tickLength))
padding += +tickLength;
- // compute box
- if (axis.direction == "x") {
+ if (isXAxis) {
lh += padding;
-
+
if (pos == "bottom") {
- plotOffset.bottom += lh + axismargin;
- axis.box = { top: canvasHeight - plotOffset.bottom, height: lh };
+ plotOffset.bottom += lh + axisMargin;
+ axis.box = { top: surface.height - plotOffset.bottom, height: lh };
}
else {
- axis.box = { top: plotOffset.top + axismargin, height: lh };
- plotOffset.top += lh + axismargin;
+ axis.box = { top: plotOffset.top + axisMargin, height: lh };
+ plotOffset.top += lh + axisMargin;
}
}
else {
lw += padding;
-
+
if (pos == "left") {
- axis.box = { left: plotOffset.left + axismargin, width: lw };
- plotOffset.left += lw + axismargin;
+ axis.box = { left: plotOffset.left + axisMargin, width: lw };
+ plotOffset.left += lw + axisMargin;
}
else {
- plotOffset.right += lw + axismargin;
- axis.box = { left: canvasWidth - plotOffset.right, width: lw };
+ plotOffset.right += lw + axisMargin;
+ axis.box = { left: surface.width - plotOffset.right, width: lw };
}
}
}
function allocateAxisBoxSecondPhase(axis) {
- // set remaining bounding box coordinates
+ // now that all axis boxes have been placed in one
+ // dimension, we can set the remaining dimension coordinates
if (axis.direction == "x") {
- axis.box.left = plotOffset.left;
- axis.box.width = plotWidth;
+ axis.box.left = plotOffset.left - axis.labelWidth / 2;
+ axis.box.width = surface.width - plotOffset.left - plotOffset.right + axis.labelWidth;
}
else {
- axis.box.top = plotOffset.top;
- axis.box.height = plotHeight;
+ axis.box.top = plotOffset.top - axis.labelHeight / 2;
+ axis.box.height = surface.height - plotOffset.bottom - plotOffset.top + axis.labelHeight;
}
}
-
+
+ function adjustLayoutForThingsStickingOut() {
+ // possibly adjust plot offset to ensure everything stays
+ // inside the canvas and isn't clipped off
+
+ var minMargin = options.grid.minBorderMargin,
+ axis, i;
+
+ // check stuff from the plot (FIXME: this should just read
+ // a value from the series, otherwise it's impossible to
+ // customize)
+ if (minMargin == null) {
+ minMargin = 0;
+ for (i = 0; i < series.length; ++i)
+ minMargin = Math.max(minMargin, 2 * (series[i].points.radius + series[i].points.lineWidth/2));
+ }
+
+ var margins = {
+ left: minMargin,
+ right: minMargin,
+ top: minMargin,
+ bottom: minMargin
+ };
+
+ // check axis labels, note we don't check the actual
+ // labels but instead use the overall width/height to not
+ // jump as much around with replots
+ $.each(allAxes(), function (_, axis) {
+ if (axis.reserveSpace && axis.ticks && axis.ticks.length) {
+ if (axis.direction === "x") {
+ margins.left = Math.max(margins.left, axis.labelWidth / 2);
+ margins.right = Math.max(margins.right, axis.labelWidth / 2);
+ } else {
+ margins.bottom = Math.max(margins.bottom, axis.labelHeight / 2);
+ margins.top = Math.max(margins.top, axis.labelHeight / 2);
+ }
+ }
+ });
+
+ plotOffset.left = Math.ceil(Math.max(margins.left, plotOffset.left));
+ plotOffset.right = Math.ceil(Math.max(margins.right, plotOffset.right));
+ plotOffset.top = Math.ceil(Math.max(margins.top, plotOffset.top));
+ plotOffset.bottom = Math.ceil(Math.max(margins.bottom, plotOffset.bottom));
+ }
+
function setupGrid() {
- var i, axes = allAxes();
+ var i, axes = allAxes(), showGrid = options.grid.show;
- // first calculate the plot and axis box dimensions
+ // Initialize the plot's offset from the edge of the canvas
- $.each(axes, function (_, axis) {
- axis.show = axis.options.show;
- if (axis.show == null)
- axis.show = axis.used; // by default an axis is visible if it's got data
-
- axis.reserveSpace = axis.show || axis.options.reserveSpace;
+ for (var a in plotOffset) {
+ var margin = options.grid.margin || 0;
+ plotOffset[a] = typeof margin == "number" ? margin : margin[a] || 0;
+ }
+
+ executeHooks(hooks.processOffset, [plotOffset]);
+
+ // If the grid is visible, add its border width to the offset
+
+ for (var a in plotOffset) {
+ if(typeof(options.grid.borderWidth) == "object") {
+ plotOffset[a] += showGrid ? options.grid.borderWidth[a] : 0;
+ }
+ else {
+ plotOffset[a] += showGrid ? options.grid.borderWidth : 0;
+ }
+ }
+ $.each(axes, function (_, axis) {
+ var axisOpts = axis.options;
+ axis.show = axisOpts.show == null ? axis.used : axisOpts.show;
+ axis.reserveSpace = axisOpts.reserveSpace == null ? axis.show : axisOpts.reserveSpace;
setRange(axis);
});
- allocatedAxes = $.grep(axes, function (axis) { return axis.reserveSpace; });
+ if (showGrid) {
+
+ var allocatedAxes = $.grep(axes, function (axis) {
+ return axis.show || axis.reserveSpace;
+ });
- plotOffset.left = plotOffset.right = plotOffset.top = plotOffset.bottom = 0;
- if (options.grid.show) {
$.each(allocatedAxes, function (_, axis) {
// make the ticks
setupTickGeneration(axis);
setTicks(axis);
snapRangeToTicks(axis, axis.ticks);
-
// find labelWidth/Height for axis
measureTickLabels(axis);
});
- // with all dimensions in house, we can compute the
- // axis boxes, start from the outside (reverse order)
+ // with all dimensions calculated, we can compute the
+ // axis bounding boxes, start from the outside
+ // (reverse order)
for (i = allocatedAxes.length - 1; i >= 0; --i)
allocateAxisBoxFirstPhase(allocatedAxes[i]);
// make sure we've got enough space for things that
// might stick out
- var minMargin = options.grid.minBorderMargin;
- if (minMargin == null) {
- minMargin = 0;
- for (i = 0; i < series.length; ++i)
- minMargin = Math.max(minMargin, series[i].points.radius + series[i].points.lineWidth/2);
- }
-
- for (var a in plotOffset) {
- plotOffset[a] += options.grid.borderWidth;
- plotOffset[a] = Math.max(minMargin, plotOffset[a]);
- }
+ adjustLayoutForThingsStickingOut();
+
+ $.each(allocatedAxes, function (_, axis) {
+ allocateAxisBoxSecondPhase(axis);
+ });
}
-
- plotWidth = canvasWidth - plotOffset.left - plotOffset.right;
- plotHeight = canvasHeight - plotOffset.bottom - plotOffset.top;
- // now we got the proper plotWidth/Height, we can compute the scaling
+ plotWidth = surface.width - plotOffset.left - plotOffset.right;
+ plotHeight = surface.height - plotOffset.bottom - plotOffset.top;
+
+ // now we got the proper plot dimensions, we can compute the scaling
$.each(axes, function (_, axis) {
setTransformationHelpers(axis);
});
- if (options.grid.show) {
- $.each(allocatedAxes, function (_, axis) {
- allocateAxisBoxSecondPhase(axis);
- });
-
- insertAxisLabels();
+ if (showGrid) {
+ drawAxisLabels();
}
-
+
insertLegend();
}
-
+
function setRange(axis) {
var opts = axis.options,
min = +(opts.min != null ? opts.min : axis.datamin),
function setupTickGeneration(axis) {
var opts = axis.options;
-
+
// estimate number of ticks
var noTicks;
if (typeof opts.ticks == "number" && opts.ticks > 0)
else
// heuristic based on the model a*sqrt(x) fitted to
// some data points that seemed reasonable
- noTicks = 0.3 * Math.sqrt(axis.direction == "x" ? canvasWidth : canvasHeight);
+ noTicks = 0.3 * Math.sqrt(axis.direction == "x" ? surface.width : surface.height);
var delta = (axis.max - axis.min) / noTicks,
- size, generator, unit, formatter, i, magn, norm;
-
- if (opts.mode == "time") {
- // pretty handling of time
-
- // map of app. size of time units in milliseconds
- var timeUnitSize = {
- "second": 1000,
- "minute": 60 * 1000,
- "hour": 60 * 60 * 1000,
- "day": 24 * 60 * 60 * 1000,
- "month": 30 * 24 * 60 * 60 * 1000,
- "year": 365.2425 * 24 * 60 * 60 * 1000
- };
+ dec = -Math.floor(Math.log(delta) / Math.LN10),
+ maxDec = opts.tickDecimals;
+
+ if (maxDec != null && dec > maxDec) {
+ dec = maxDec;
+ }
+ var magn = Math.pow(10, -dec),
+ norm = delta / magn, // norm is between 1.0 and 10.0
+ size;
- // the allowed tick sizes, after 1 year we use
- // an integer algorithm
- var spec = [
- [1, "second"], [2, "second"], [5, "second"], [10, "second"],
- [30, "second"],
- [1, "minute"], [2, "minute"], [5, "minute"], [10, "minute"],
- [30, "minute"],
- [1, "hour"], [2, "hour"], [4, "hour"],
- [8, "hour"], [12, "hour"],
- [1, "day"], [2, "day"], [3, "day"],
- [0.25, "month"], [0.5, "month"], [1, "month"],
- [2, "month"], [3, "month"], [6, "month"],
- [1, "year"]
- ];
-
- var minSize = 0;
- if (opts.minTickSize != null) {
- if (typeof opts.tickSize == "number")
- minSize = opts.tickSize;
- else
- minSize = opts.minTickSize[0] * timeUnitSize[opts.minTickSize[1]];
+ if (norm < 1.5) {
+ size = 1;
+ } else if (norm < 3) {
+ size = 2;
+ // special case for 2.5, requires an extra decimal
+ if (norm > 2.25 && (maxDec == null || dec + 1 <= maxDec)) {
+ size = 2.5;
+ ++dec;
}
+ } else if (norm < 7.5) {
+ size = 5;
+ } else {
+ size = 10;
+ }
- for (var i = 0; i < spec.length - 1; ++i)
- if (delta < (spec[i][0] * timeUnitSize[spec[i][1]]
- + spec[i + 1][0] * timeUnitSize[spec[i + 1][1]]) / 2
- && spec[i][0] * timeUnitSize[spec[i][1]] >= minSize)
- break;
- size = spec[i][0];
- unit = spec[i][1];
-
- // special-case the possibility of several years
- if (unit == "year") {
- magn = Math.pow(10, Math.floor(Math.log(delta / timeUnitSize.year) / Math.LN10));
- norm = (delta / timeUnitSize.year) / magn;
- if (norm < 1.5)
- size = 1;
- else if (norm < 3)
- size = 2;
- else if (norm < 7.5)
- size = 5;
- else
- size = 10;
+ size *= magn;
- size *= magn;
- }
+ if (opts.minTickSize != null && size < opts.minTickSize) {
+ size = opts.minTickSize;
+ }
- axis.tickSize = opts.tickSize || [size, unit];
-
- generator = function(axis) {
- var ticks = [],
- tickSize = axis.tickSize[0], unit = axis.tickSize[1],
- d = new Date(axis.min);
-
- var step = tickSize * timeUnitSize[unit];
-
- if (unit == "second")
- d.setUTCSeconds(floorInBase(d.getUTCSeconds(), tickSize));
- if (unit == "minute")
- d.setUTCMinutes(floorInBase(d.getUTCMinutes(), tickSize));
- if (unit == "hour")
- d.setUTCHours(floorInBase(d.getUTCHours(), tickSize));
- if (unit == "month")
- d.setUTCMonth(floorInBase(d.getUTCMonth(), tickSize));
- if (unit == "year")
- d.setUTCFullYear(floorInBase(d.getUTCFullYear(), tickSize));
-
- // reset smaller components
- d.setUTCMilliseconds(0);
- if (step >= timeUnitSize.minute)
- d.setUTCSeconds(0);
- if (step >= timeUnitSize.hour)
- d.setUTCMinutes(0);
- if (step >= timeUnitSize.day)
- d.setUTCHours(0);
- if (step >= timeUnitSize.day * 4)
- d.setUTCDate(1);
- if (step >= timeUnitSize.year)
- d.setUTCMonth(0);
-
-
- var carry = 0, v = Number.NaN, prev;
- do {
- prev = v;
- v = d.getTime();
- ticks.push(v);
- if (unit == "month") {
- if (tickSize < 1) {
- // a bit complicated - we'll divide the month
- // up but we need to take care of fractions
- // so we don't end up in the middle of a day
- d.setUTCDate(1);
- var start = d.getTime();
- d.setUTCMonth(d.getUTCMonth() + 1);
- var end = d.getTime();
- d.setTime(v + carry * timeUnitSize.hour + (end - start) * tickSize);
- carry = d.getUTCHours();
- d.setUTCHours(0);
- }
- else
- d.setUTCMonth(d.getUTCMonth() + tickSize);
- }
- else if (unit == "year") {
- d.setUTCFullYear(d.getUTCFullYear() + tickSize);
- }
- else
- d.setTime(v + step);
- } while (v < axis.max && v != prev);
+ axis.delta = delta;
+ axis.tickDecimals = Math.max(0, maxDec != null ? maxDec : dec);
+ axis.tickSize = opts.tickSize || size;
- return ticks;
- };
+ // Time mode was moved to a plug-in in 0.8, and since so many people use it
+ // we'll add an especially friendly reminder to make sure they included it.
- formatter = function (v, axis) {
- var d = new Date(v);
-
- // first check global format
- if (opts.timeformat != null)
- return $.plot.formatDate(d, opts.timeformat, opts.monthNames);
-
- var t = axis.tickSize[0] * timeUnitSize[axis.tickSize[1]];
- var span = axis.max - axis.min;
- var suffix = (opts.twelveHourClock) ? " %p" : "";
-
- if (t < timeUnitSize.minute)
- fmt = "%h:%M:%S" + suffix;
- else if (t < timeUnitSize.day) {
- if (span < 2 * timeUnitSize.day)
- fmt = "%h:%M" + suffix;
- else
- fmt = "%b %d %h:%M" + suffix;
- }
- else if (t < timeUnitSize.month)
- fmt = "%b %d";
- else if (t < timeUnitSize.year) {
- if (span < timeUnitSize.year)
- fmt = "%b";
- else
- fmt = "%b %y";
- }
- else
- fmt = "%y";
-
- return $.plot.formatDate(d, fmt, opts.monthNames);
- };
+ if (opts.mode == "time" && !axis.tickGenerator) {
+ throw new Error("Time mode requires the flot.time plugin.");
}
- else {
- // pretty rounding of base-10 numbers
- var maxDec = opts.tickDecimals;
- var dec = -Math.floor(Math.log(delta) / Math.LN10);
- if (maxDec != null && dec > maxDec)
- dec = maxDec;
-
- magn = Math.pow(10, -dec);
- norm = delta / magn; // norm is between 1.0 and 10.0
-
- if (norm < 1.5)
- size = 1;
- else if (norm < 3) {
- size = 2;
- // special case for 2.5, requires an extra decimal
- if (norm > 2.25 && (maxDec == null || dec + 1 <= maxDec)) {
- size = 2.5;
- ++dec;
- }
- }
- else if (norm < 7.5)
- size = 5;
- else
- size = 10;
- size *= magn;
-
- if (opts.minTickSize != null && size < opts.minTickSize)
- size = opts.minTickSize;
+ // Flot supports base-10 axes; any other mode else is handled by a plug-in,
+ // like flot.time.js.
+
+ if (!axis.tickGenerator) {
- axis.tickDecimals = Math.max(0, maxDec != null ? maxDec : dec);
- axis.tickSize = opts.tickSize || size;
+ axis.tickGenerator = function (axis) {
- generator = function (axis) {
- var ticks = [];
+ var ticks = [],
+ start = floorInBase(axis.min, axis.tickSize),
+ i = 0,
+ v = Number.NaN,
+ prev;
- // spew out all possible ticks
- var start = floorInBase(axis.min, axis.tickSize),
- i = 0, v = Number.NaN, prev;
do {
prev = v;
v = start + i * axis.tickSize;
return ticks;
};
- formatter = function (v, axis) {
- return v.toFixed(axis.tickDecimals);
+ axis.tickFormatter = function (value, axis) {
+
+ var factor = axis.tickDecimals ? Math.pow(10, axis.tickDecimals) : 1;
+ var formatted = "" + Math.round(value * factor) / factor;
+
+ // If tickDecimals was specified, ensure that we have exactly that
+ // much precision; otherwise default to the value's own precision.
+
+ if (axis.tickDecimals != null) {
+ var decimal = formatted.indexOf(".");
+ var precision = decimal == -1 ? 0 : formatted.length - decimal - 1;
+ if (precision < axis.tickDecimals) {
+ return (precision ? formatted : formatted + ".") + ("" + factor).substr(1, axis.tickDecimals - precision);
+ }
+ }
+
+ return formatted;
};
}
+ if ($.isFunction(opts.tickFormatter))
+ axis.tickFormatter = function (v, axis) { return "" + opts.tickFormatter(v, axis); };
+
if (opts.alignTicksWithAxis != null) {
var otherAxis = (axis.direction == "x" ? xaxes : yaxes)[opts.alignTicksWithAxis - 1];
if (otherAxis && otherAxis.used && otherAxis != axis) {
// consider snapping min/max to outermost nice ticks
- var niceTicks = generator(axis);
+ var niceTicks = axis.tickGenerator(axis);
if (niceTicks.length > 0) {
if (opts.min == null)
axis.min = Math.min(axis.min, niceTicks[0]);
if (opts.max == null && niceTicks.length > 1)
axis.max = Math.max(axis.max, niceTicks[niceTicks.length - 1]);
}
-
- generator = function (axis) {
+
+ axis.tickGenerator = function (axis) {
// copy ticks, scaled to this axis
var ticks = [], v, i;
for (i = 0; i < otherAxis.ticks.length; ++i) {
}
return ticks;
};
-
+
// we might need an extra decimal since forced
// ticks don't necessarily fit naturally
- if (axis.mode != "time" && opts.tickDecimals == null) {
- var extraDec = Math.max(0, -Math.floor(Math.log(delta) / Math.LN10) + 1),
- ts = generator(axis);
+ if (!axis.mode && opts.tickDecimals == null) {
+ var extraDec = Math.max(0, -Math.floor(Math.log(axis.delta) / Math.LN10) + 1),
+ ts = axis.tickGenerator(axis);
// only proceed if the tick interval rounded
// with an extra decimal doesn't give us a
}
}
}
-
- axis.tickGenerator = generator;
- if ($.isFunction(opts.tickFormatter))
- axis.tickFormatter = function (v, axis) { return "" + opts.tickFormatter(v, axis); };
- else
- axis.tickFormatter = formatter;
}
-
+
function setTicks(axis) {
var oticks = axis.options.ticks, ticks = [];
if (oticks == null || (typeof oticks == "number" && oticks > 0))
else if (oticks) {
if ($.isFunction(oticks))
// generate the ticks
- ticks = oticks({ min: axis.min, max: axis.max });
+ ticks = oticks(axis);
else
ticks = oticks;
}
axis.max = Math.max(axis.max, ticks[ticks.length - 1].v);
}
}
-
+
function draw() {
- ctx.clearRect(0, 0, canvasWidth, canvasHeight);
+
+ surface.clear();
+
+ executeHooks(hooks.drawBackground, [ctx]);
var grid = options.grid;
// draw background, if any
if (grid.show && grid.backgroundColor)
drawBackground();
-
- if (grid.show && !grid.aboveData)
+
+ if (grid.show && !grid.aboveData) {
drawGrid();
+ }
for (var i = 0; i < series.length; ++i) {
executeHooks(hooks.drawSeries, [ctx, series[i]]);
}
executeHooks(hooks.draw, [ctx]);
-
- if (grid.show && grid.aboveData)
+
+ if (grid.show && grid.aboveData) {
drawGrid();
+ }
+
+ surface.render();
+
+ // A draw implies that either the axes or data have changed, so we
+ // should probably update the overlay highlights as well.
+
+ triggerRedrawOverlay();
}
function extractRange(ranges, coord) {
var axis, from, to, key, axes = allAxes();
- for (i = 0; i < axes.length; ++i) {
+ for (var i = 0; i < axes.length; ++i) {
axis = axes[i];
if (axis.direction == coord) {
key = coord + axis.n + "axis";
from = to;
to = tmp;
}
-
+
return { from: from, to: to, axis: axis };
}
-
+
function drawBackground() {
ctx.save();
ctx.translate(plotOffset.left, plotOffset.top);
}
function drawGrid() {
- var i;
-
+ var i, axes, bw, bc;
+
ctx.save();
ctx.translate(plotOffset.left, plotOffset.top);
var markings = options.grid.markings;
if (markings) {
if ($.isFunction(markings)) {
- var axes = plot.getAxes();
+ axes = plot.getAxes();
// xmin etc. is backwards compatibility, to be
// removed in the future
axes.xmin = axes.xaxis.min;
axes.xmax = axes.xaxis.max;
axes.ymin = axes.yaxis.min;
axes.ymax = axes.yaxis.max;
-
+
markings = markings(axes);
}
yrange.from = Math.max(yrange.from, yrange.axis.min);
yrange.to = Math.min(yrange.to, yrange.axis.max);
- if (xrange.from == xrange.to && yrange.from == yrange.to)
+ var xequal = xrange.from === xrange.to,
+ yequal = yrange.from === yrange.to;
+
+ if (xequal && yequal) {
continue;
+ }
// then draw
- xrange.from = xrange.axis.p2c(xrange.from);
- xrange.to = xrange.axis.p2c(xrange.to);
- yrange.from = yrange.axis.p2c(yrange.from);
- yrange.to = yrange.axis.p2c(yrange.to);
-
- if (xrange.from == xrange.to || yrange.from == yrange.to) {
- // draw line
+ xrange.from = Math.floor(xrange.axis.p2c(xrange.from));
+ xrange.to = Math.floor(xrange.axis.p2c(xrange.to));
+ yrange.from = Math.floor(yrange.axis.p2c(yrange.from));
+ yrange.to = Math.floor(yrange.axis.p2c(yrange.to));
+
+ if (xequal || yequal) {
+ var lineWidth = m.lineWidth || options.grid.markingsLineWidth,
+ subPixel = lineWidth % 2 ? 0.5 : 0;
ctx.beginPath();
ctx.strokeStyle = m.color || options.grid.markingsColor;
- ctx.lineWidth = m.lineWidth || options.grid.markingsLineWidth;
- ctx.moveTo(xrange.from, yrange.from);
- ctx.lineTo(xrange.to, yrange.to);
+ ctx.lineWidth = lineWidth;
+ if (xequal) {
+ ctx.moveTo(xrange.to + subPixel, yrange.from);
+ ctx.lineTo(xrange.to + subPixel, yrange.to);
+ } else {
+ ctx.moveTo(xrange.from, yrange.to + subPixel);
+ ctx.lineTo(xrange.to, yrange.to + subPixel);
+ }
ctx.stroke();
- }
- else {
- // fill area
+ } else {
ctx.fillStyle = m.color || options.grid.markingsColor;
ctx.fillRect(xrange.from, yrange.to,
xrange.to - xrange.from,
}
}
}
-
+
// draw the ticks
- var axes = allAxes(), bw = options.grid.borderWidth;
+ axes = allAxes();
+ bw = options.grid.borderWidth;
for (var j = 0; j < axes.length; ++j) {
var axis = axes[j], box = axis.box,
t = axis.tickLength, x, y, xoff, yoff;
if (!axis.show || axis.ticks.length == 0)
- continue
-
- ctx.strokeStyle = axis.options.tickColor || $.color.parse(axis.options.color).scale('a', 0.22).toString();
+ continue;
+
ctx.lineWidth = 1;
// find the edges
else
x = box.left - plotOffset.left + (axis.position == "left" ? box.width : 0);
}
-
+
// draw tick bar
if (!axis.innermost) {
+ ctx.strokeStyle = axis.options.color;
ctx.beginPath();
xoff = yoff = 0;
if (axis.direction == "x")
- xoff = plotWidth;
+ xoff = plotWidth + 1;
else
- yoff = plotHeight;
-
+ yoff = plotHeight + 1;
+
if (ctx.lineWidth == 1) {
- x = Math.floor(x) + 0.5;
- y = Math.floor(y) + 0.5;
+ if (axis.direction == "x") {
+ y = Math.floor(y) + 0.5;
+ } else {
+ x = Math.floor(x) + 0.5;
+ }
}
ctx.moveTo(x, y);
}
// draw ticks
+
+ ctx.strokeStyle = axis.options.tickColor;
+
ctx.beginPath();
for (i = 0; i < axis.ticks.length; ++i) {
var v = axis.ticks[i].v;
-
+
xoff = yoff = 0;
- if (v < axis.min || v > axis.max
+ if (isNaN(v) || v < axis.min || v > axis.max
// skip those lying on the axes if we got a border
- || (t == "full" && bw > 0
+ || (t == "full"
+ && ((typeof bw == "object" && bw[axis.position] > 0) || bw > 0)
&& (v == axis.min || v == axis.max)))
continue;
if (axis.direction == "x") {
x = axis.p2c(v);
yoff = t == "full" ? -plotHeight : t;
-
+
if (axis.position == "top")
yoff = -yoff;
}
else {
y = axis.p2c(v);
xoff = t == "full" ? -plotWidth : t;
-
+
if (axis.position == "left")
xoff = -xoff;
}
ctx.moveTo(x, y);
ctx.lineTo(x + xoff, y + yoff);
}
-
+
ctx.stroke();
}
-
-
+
+
// draw border
if (bw) {
- ctx.lineWidth = bw;
- ctx.strokeStyle = options.grid.borderColor;
- ctx.strokeRect(-bw/2, -bw/2, plotWidth + bw, plotHeight + bw);
+ // If either borderWidth or borderColor is an object, then draw the border
+ // line by line instead of as one rectangle
+ bc = options.grid.borderColor;
+ if(typeof bw == "object" || typeof bc == "object") {
+ if (typeof bw !== "object") {
+ bw = {top: bw, right: bw, bottom: bw, left: bw};
+ }
+ if (typeof bc !== "object") {
+ bc = {top: bc, right: bc, bottom: bc, left: bc};
+ }
+
+ if (bw.top > 0) {
+ ctx.strokeStyle = bc.top;
+ ctx.lineWidth = bw.top;
+ ctx.beginPath();
+ ctx.moveTo(0 - bw.left, 0 - bw.top/2);
+ ctx.lineTo(plotWidth, 0 - bw.top/2);
+ ctx.stroke();
+ }
+
+ if (bw.right > 0) {
+ ctx.strokeStyle = bc.right;
+ ctx.lineWidth = bw.right;
+ ctx.beginPath();
+ ctx.moveTo(plotWidth + bw.right / 2, 0 - bw.top);
+ ctx.lineTo(plotWidth + bw.right / 2, plotHeight);
+ ctx.stroke();
+ }
+
+ if (bw.bottom > 0) {
+ ctx.strokeStyle = bc.bottom;
+ ctx.lineWidth = bw.bottom;
+ ctx.beginPath();
+ ctx.moveTo(plotWidth + bw.right, plotHeight + bw.bottom / 2);
+ ctx.lineTo(0, plotHeight + bw.bottom / 2);
+ ctx.stroke();
+ }
+
+ if (bw.left > 0) {
+ ctx.strokeStyle = bc.left;
+ ctx.lineWidth = bw.left;
+ ctx.beginPath();
+ ctx.moveTo(0 - bw.left/2, plotHeight + bw.bottom);
+ ctx.lineTo(0- bw.left/2, 0);
+ ctx.stroke();
+ }
+ }
+ else {
+ ctx.lineWidth = bw;
+ ctx.strokeStyle = options.grid.borderColor;
+ ctx.strokeRect(-bw/2, -bw/2, plotWidth + bw, plotHeight + bw);
+ }
}
ctx.restore();
}
- function insertAxisLabels() {
- placeholder.find(".tickLabels").remove();
-
- var html = ['<div class="tickLabels" style="font-size:smaller">'];
+ function drawAxisLabels() {
+
+ $.each(allAxes(), function (_, axis) {
+ var box = axis.box,
+ legacyStyles = axis.direction + "Axis " + axis.direction + axis.n + "Axis",
+ layer = "flot-" + axis.direction + "-axis flot-" + axis.direction + axis.n + "-axis " + legacyStyles,
+ font = axis.options.font || "flot-tick-label tickLabel",
+ tick, x, y, halign, valign;
+
+ // Remove text before checking for axis.show and ticks.length;
+ // otherwise plugins, like flot-tickrotor, that draw their own
+ // tick labels will end up with both theirs and the defaults.
+
+ surface.removeText(layer);
+
+ if (!axis.show || axis.ticks.length == 0)
+ return;
- var axes = allAxes();
- for (var j = 0; j < axes.length; ++j) {
- var axis = axes[j], box = axis.box;
- if (!axis.show)
- continue;
- //debug: html.push('<div style="position:absolute;opacity:0.10;background-color:red;left:' + box.left + 'px;top:' + box.top + 'px;width:' + box.width + 'px;height:' + box.height + 'px"></div>')
- html.push('<div class="' + axis.direction + 'Axis ' + axis.direction + axis.n + 'Axis" style="color:' + axis.options.color + '">');
for (var i = 0; i < axis.ticks.length; ++i) {
- var tick = axis.ticks[i];
+
+ tick = axis.ticks[i];
if (!tick.label || tick.v < axis.min || tick.v > axis.max)
continue;
- var pos = {}, align;
-
if (axis.direction == "x") {
- align = "center";
- pos.left = Math.round(plotOffset.left + axis.p2c(tick.v) - axis.labelWidth/2);
- if (axis.position == "bottom")
- pos.top = box.top + box.padding;
- else
- pos.bottom = canvasHeight - (box.top + box.height - box.padding);
- }
- else {
- pos.top = Math.round(plotOffset.top + axis.p2c(tick.v) - axis.labelHeight/2);
- if (axis.position == "left") {
- pos.right = canvasWidth - (box.left + box.width - box.padding)
- align = "right";
+ halign = "center";
+ x = plotOffset.left + axis.p2c(tick.v);
+ if (axis.position == "bottom") {
+ y = box.top + box.padding;
+ } else {
+ y = box.top + box.height - box.padding;
+ valign = "bottom";
}
- else {
- pos.left = box.left + box.padding;
- align = "left";
+ } else {
+ valign = "middle";
+ y = plotOffset.top + axis.p2c(tick.v);
+ if (axis.position == "left") {
+ x = box.left + box.width - box.padding;
+ halign = "right";
+ } else {
+ x = box.left + box.padding;
}
}
- pos.width = axis.labelWidth;
-
- var style = ["position:absolute", "text-align:" + align ];
- for (var a in pos)
- style.push(a + ":" + pos[a] + "px")
-
- html.push('<div class="tickLabel" style="' + style.join(';') + '">' + tick.label + '</div>');
+ surface.addText(layer, x, y, tick.label, font, null, null, halign, valign);
}
- html.push('</div>');
- }
-
- html.push('</div>');
-
- placeholder.append(html.join(""));
+ });
}
function drawSeries(series) {
if (series.points.show)
drawSeriesPoints(series);
}
-
+
function drawSeriesLines(series) {
function plotLine(datapoints, xoffset, yoffset, axisx, axisy) {
var points = datapoints.points,
ps = datapoints.pointsize,
prevx = null, prevy = null;
-
+
ctx.beginPath();
for (var i = ps; i < points.length; i += ps) {
var x1 = points[i - ps], y1 = points[i - ps + 1],
x2 = points[i], y2 = points[i + 1];
-
+
if (x1 == null || x2 == null)
continue;
if (x1 != prevx || y1 != prevy)
ctx.moveTo(axisx.p2c(x1) + xoffset, axisy.p2c(y1) + yoffset);
-
+
prevx = x2;
prevy = y2;
ctx.lineTo(axisx.p2c(x2) + xoffset, axisy.p2c(y2) + yoffset);
continue;
// clip x values
-
+
// clip with xmin
if (x1 <= x2 && x1 < axisx.min) {
if (x2 < axisx.min)
ctx.moveTo(axisx.p2c(x1), axisy.p2c(bottom));
areaOpen = true;
}
-
+
// now first check the case where both is outside
if (y1 >= axisy.max && y2 >= axisy.max) {
ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.max));
ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.min));
continue;
}
-
+
// else it's a bit more complicated, there might
// be a flat maxed out rectangle first, then a
// triangular cutout or reverse; to find these
// clip the y values, without shortcutting, we
// go through all cases in turn
-
+
// clip with ymin
if (y1 <= y2 && y1 < axisy.min && y2 >= axisy.min) {
x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
ctx.lineTo(axisx.p2c(x1old), axisy.p2c(y1));
// it goes to (x1, y1), but we fill that below
}
-
+
// fill triangular section, this sometimes result
// in redundant points if (x1, y1) hasn't changed
// from previous line to, but we just ignore that
var x = points[i], y = points[i + 1];
if (x == null || x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max)
continue;
-
+
ctx.beginPath();
x = axisx.p2c(x);
y = axisy.p2c(y) + offset;
else
symbol(ctx, x, y, radius, shadow);
ctx.closePath();
-
+
if (fillStyle) {
ctx.fillStyle = fillStyle;
ctx.fill();
ctx.stroke();
}
}
-
+
ctx.save();
ctx.translate(plotOffset.left, plotOffset.top);
sw = series.shadowSize,
radius = series.points.radius,
symbol = series.points.symbol;
+
+ // If the user sets the line width to 0, we change it to a very
+ // small value. A line width of 0 seems to force the default of 1.
+ // Doing the conditional here allows the shadow setting to still be
+ // optional even with a lineWidth of 0.
+
+ if( lw == 0 )
+ lw = 0.0001;
+
if (lw > 0 && sw > 0) {
// draw shadow in two steps
var w = sw / 2;
ctx.restore();
}
- function drawBar(x, y, b, barLeft, barRight, offset, fillStyleCallback, axisx, axisy, c, horizontal, lineWidth) {
+ function drawBar(x, y, b, barLeft, barRight, fillStyleCallback, axisx, axisy, c, horizontal, lineWidth) {
var left, right, bottom, top,
drawLeft, drawRight, drawTop, drawBottom,
tmp;
drawTop = false;
}
}
-
+
// clip
if (right < axisx.min || left > axisx.max ||
top < axisy.min || bottom > axisy.max)
return;
-
+
if (left < axisx.min) {
left = axisx.min;
drawLeft = false;
bottom = axisy.min;
drawBottom = false;
}
-
+
if (top > axisy.max) {
top = axisy.max;
drawTop = false;
bottom = axisy.p2c(bottom);
right = axisx.p2c(right);
top = axisy.p2c(top);
-
+
// fill the bar
if (fillStyleCallback) {
- c.beginPath();
- c.moveTo(left, bottom);
- c.lineTo(left, top);
- c.lineTo(right, top);
- c.lineTo(right, bottom);
c.fillStyle = fillStyleCallback(bottom, top);
- c.fill();
+ c.fillRect(left, top, right - left, bottom - top)
}
// draw outline
c.beginPath();
// FIXME: inline moveTo is buggy with excanvas
- c.moveTo(left, bottom + offset);
+ c.moveTo(left, bottom);
if (drawLeft)
- c.lineTo(left, top + offset);
+ c.lineTo(left, top);
else
- c.moveTo(left, top + offset);
+ c.moveTo(left, top);
if (drawTop)
- c.lineTo(right, top + offset);
+ c.lineTo(right, top);
else
- c.moveTo(right, top + offset);
+ c.moveTo(right, top);
if (drawRight)
- c.lineTo(right, bottom + offset);
+ c.lineTo(right, bottom);
else
- c.moveTo(right, bottom + offset);
+ c.moveTo(right, bottom);
if (drawBottom)
- c.lineTo(left, bottom + offset);
+ c.lineTo(left, bottom);
else
- c.moveTo(left, bottom + offset);
+ c.moveTo(left, bottom);
c.stroke();
}
}
-
+
function drawSeriesBars(series) {
- function plotBars(datapoints, barLeft, barRight, offset, fillStyleCallback, axisx, axisy) {
+ function plotBars(datapoints, barLeft, barRight, fillStyleCallback, axisx, axisy) {
var points = datapoints.points, ps = datapoints.pointsize;
-
+
for (var i = 0; i < points.length; i += ps) {
if (points[i] == null)
continue;
- drawBar(points[i], points[i + 1], points[i + 2], barLeft, barRight, offset, fillStyleCallback, axisx, axisy, ctx, series.bars.horizontal, series.bars.lineWidth);
+ drawBar(points[i], points[i + 1], points[i + 2], barLeft, barRight, fillStyleCallback, axisx, axisy, ctx, series.bars.horizontal, series.bars.lineWidth);
}
}
// FIXME: figure out a way to add shadows (for instance along the right edge)
ctx.lineWidth = series.bars.lineWidth;
ctx.strokeStyle = series.color;
- var barLeft = series.bars.align == "left" ? 0 : -series.bars.barWidth/2;
+
+ var barLeft;
+
+ switch (series.bars.align) {
+ case "left":
+ barLeft = 0;
+ break;
+ case "right":
+ barLeft = -series.bars.barWidth;
+ break;
+ default:
+ barLeft = -series.bars.barWidth / 2;
+ }
+
var fillStyleCallback = series.bars.fill ? function (bottom, top) { return getFillStyle(series.bars, series.color, bottom, top); } : null;
- plotBars(series.datapoints, barLeft, barLeft + series.bars.barWidth, 0, fillStyleCallback, series.xaxis, series.yaxis);
+ plotBars(series.datapoints, barLeft, barLeft + series.bars.barWidth, fillStyleCallback, series.xaxis, series.yaxis);
ctx.restore();
}
if (filloptions.fillColor)
return getColorOrGradient(filloptions.fillColor, bottom, top, seriesColor);
-
+
var c = $.color.parse(seriesColor);
c.a = typeof fill == "number" ? fill : 0.4;
c.normalize();
return c.toString();
}
-
+
function insertLegend() {
- placeholder.find(".legend").remove();
- if (!options.legend.show)
+ if (options.legend.container != null) {
+ $(options.legend.container).html("");
+ } else {
+ placeholder.find(".legend").remove();
+ }
+
+ if (!options.legend.show) {
return;
-
- var fragments = [], rowStarted = false,
+ }
+
+ var fragments = [], entries = [], rowStarted = false,
lf = options.legend.labelFormatter, s, label;
+
+ // Build a list of legend entries, with each having a label and a color
+
for (var i = 0; i < series.length; ++i) {
s = series[i];
- label = s.label;
- if (!label)
- continue;
-
+ if (s.label) {
+ label = lf ? lf(s.label, s) : s.label;
+ if (label) {
+ entries.push({
+ label: label,
+ color: s.color
+ });
+ }
+ }
+ }
+
+ // Sort the legend using either the default or a custom comparator
+
+ if (options.legend.sorted) {
+ if ($.isFunction(options.legend.sorted)) {
+ entries.sort(options.legend.sorted);
+ } else if (options.legend.sorted == "reverse") {
+ entries.reverse();
+ } else {
+ var ascending = options.legend.sorted != "descending";
+ entries.sort(function(a, b) {
+ return a.label == b.label ? 0 : (
+ (a.label < b.label) != ascending ? 1 : -1 // Logical XOR
+ );
+ });
+ }
+ }
+
+ // Generate markup for the list of entries, in their final order
+
+ for (var i = 0; i < entries.length; ++i) {
+
+ var entry = entries[i];
+
if (i % options.legend.noColumns == 0) {
if (rowStarted)
fragments.push('</tr>');
rowStarted = true;
}
- if (lf)
- label = lf(label, s);
-
fragments.push(
- '<td class="legendColorBox"><div style="border:1px solid ' + options.legend.labelBoxBorderColor + ';padding:1px"><div style="width:4px;height:0;border:5px solid ' + s.color + ';overflow:hidden"></div></div></td>' +
- '<td class="legendLabel">' + label + '</td>');
+ '<td class="legendColorBox"><div style="border:1px solid ' + options.legend.labelBoxBorderColor + ';padding:1px"><div style="width:4px;height:0;border:5px solid ' + entry.color + ';overflow:hidden"></div></div></td>' +
+ '<td class="legendLabel">' + entry.label + '</td>'
+ );
}
+
if (rowStarted)
fragments.push('</tr>');
-
+
if (fragments.length == 0)
return;
// interactive features
-
+
var highlights = [],
redrawTimeout = null;
-
+
// returns the data item the mouse is over, or null if none is found
function findNearbyItem(mouseX, mouseY, seriesFilter) {
var maxDistance = options.grid.mouseActiveRadius,
smallestDistance = maxDistance * maxDistance + 1,
- item = null, foundPoint = false, i, j;
+ item = null, foundPoint = false, i, j, ps;
for (i = series.length - 1; i >= 0; --i) {
if (!seriesFilter(series[i]))
continue;
-
+
var s = series[i],
axisx = s.xaxis,
axisy = s.yaxis,
points = s.datapoints.points,
- ps = s.datapoints.pointsize,
mx = axisx.c2p(mouseX), // precompute some stuff to make the loop faster
my = axisy.c2p(mouseY),
maxx = maxDistance / axisx.scale,
maxy = maxDistance / axisy.scale;
+ ps = s.datapoints.pointsize;
// with inverse transforms, we can't use the maxx/maxy
// optimization, sadly
if (axisx.options.inverseTransform)
maxx = Number.MAX_VALUE;
if (axisy.options.inverseTransform)
maxy = Number.MAX_VALUE;
-
+
if (s.lines.show || s.points.show) {
for (j = 0; j < points.length; j += ps) {
var x = points[j], y = points[j + 1];
if (x == null)
continue;
-
+
// For points and lines, the cursor must be within a
// certain distance to the data point
if (x - mx > maxx || x - mx < -maxx ||
}
}
}
-
+
if (s.bars.show && !item) { // no other point can be nearby
- var barLeft = s.bars.align == "left" ? 0 : -s.bars.barWidth/2,
- barRight = barLeft + s.bars.barWidth;
-
+
+ var barLeft, barRight;
+
+ switch (s.bars.align) {
+ case "left":
+ barLeft = 0;
+ break;
+ case "right":
+ barLeft = -s.bars.barWidth;
+ break;
+ default:
+ barLeft = -s.bars.barWidth / 2;
+ }
+
+ barRight = barLeft + s.bars.barWidth;
+
for (j = 0; j < points.length; j += ps) {
var x = points[j], y = points[j + 1], b = points[j + 2];
if (x == null)
continue;
-
+
// for a bar graph, the cursor must be inside the bar
- if (series[i].bars.horizontal ?
- (mx <= Math.max(b, x) && mx >= Math.min(b, x) &&
+ if (series[i].bars.horizontal ?
+ (mx <= Math.max(b, x) && mx >= Math.min(b, x) &&
my >= y + barLeft && my <= y + barRight) :
(mx >= x + barLeft && mx <= x + barRight &&
my >= Math.min(b, y) && my <= Math.max(b, y)))
i = item[0];
j = item[1];
ps = series[i].datapoints.pointsize;
-
+
return { datapoint: series[i].datapoints.points.slice(j * ps, (j + 1) * ps),
dataIndex: j,
series: series[i],
seriesIndex: i };
}
-
+
return null;
}
if (item) {
// fill in mouse pos for any listeners out there
- item.pageX = parseInt(item.series.xaxis.p2c(item.datapoint[0]) + offset.left + plotOffset.left);
- item.pageY = parseInt(item.series.yaxis.p2c(item.datapoint[1]) + offset.top + plotOffset.top);
+ item.pageX = parseInt(item.series.xaxis.p2c(item.datapoint[0]) + offset.left + plotOffset.left, 10);
+ item.pageY = parseInt(item.series.yaxis.p2c(item.datapoint[1]) + offset.top + plotOffset.top, 10);
}
if (options.grid.autoHighlight) {
h.point[1] == item.datapoint[1]))
unhighlight(h.series, h.point);
}
-
+
if (item)
highlight(item.series, item.datapoint, eventname);
}
-
+
placeholder.trigger(eventname, [ pos, item ]);
}
function triggerRedrawOverlay() {
+ var t = options.interaction.redrawOverlayInterval;
+ if (t == -1) { // skip event queue
+ drawOverlay();
+ return;
+ }
+
if (!redrawTimeout)
- redrawTimeout = setTimeout(drawOverlay, 30);
+ redrawTimeout = setTimeout(drawOverlay, t);
}
function drawOverlay() {
// draw highlights
octx.save();
- octx.clearRect(0, 0, canvasWidth, canvasHeight);
+ overlay.clear();
octx.translate(plotOffset.left, plotOffset.top);
-
+
var i, hi;
for (i = 0; i < highlights.length; ++i) {
hi = highlights[i];
drawPointHighlight(hi.series, hi.point);
}
octx.restore();
-
+
executeHooks(hooks.drawOverlay, [octx]);
}
-
+
function highlight(s, point, auto) {
if (typeof s == "number")
s = series[s];
else if (!auto)
highlights[i].auto = false;
}
-
+
function unhighlight(s, point) {
if (s == null && point == null) {
highlights = [];
triggerRedrawOverlay();
+ return;
}
-
+
if (typeof s == "number")
s = series[s];
- if (typeof point == "number")
- point = s.data[point];
+ if (typeof point == "number") {
+ var ps = s.datapoints.pointsize;
+ point = s.datapoints.points.slice(ps * point, ps * (point + 1));
+ }
var i = indexOfHighlight(s, point);
if (i != -1) {
triggerRedrawOverlay();
}
}
-
+
function indexOfHighlight(s, p) {
for (var i = 0; i < highlights.length; ++i) {
var h = highlights[i];
}
return -1;
}
-
+
function drawPointHighlight(series, point) {
var x = point[0], y = point[1],
- axisx = series.xaxis, axisy = series.yaxis;
-
+ axisx = series.xaxis, axisy = series.yaxis,
+ highlightColor = (typeof series.highlightColor === "string") ? series.highlightColor : $.color.parse(series.color).scale('a', 0.5).toString();
+
if (x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max)
return;
-
+
var pointRadius = series.points.radius + series.points.lineWidth / 2;
octx.lineWidth = pointRadius;
- octx.strokeStyle = $.color.parse(series.color).scale('a', 0.5).toString();
- var radius = 1.5 * pointRadius,
- x = axisx.p2c(x),
- y = axisy.p2c(y);
-
+ octx.strokeStyle = highlightColor;
+ var radius = 1.5 * pointRadius;
+ x = axisx.p2c(x);
+ y = axisy.p2c(y);
+
octx.beginPath();
if (series.points.symbol == "circle")
octx.arc(x, y, radius, 0, 2 * Math.PI, false);
}
function drawBarHighlight(series, point) {
+ var highlightColor = (typeof series.highlightColor === "string") ? series.highlightColor : $.color.parse(series.color).scale('a', 0.5).toString(),
+ fillStyle = highlightColor,
+ barLeft;
+
+ switch (series.bars.align) {
+ case "left":
+ barLeft = 0;
+ break;
+ case "right":
+ barLeft = -series.bars.barWidth;
+ break;
+ default:
+ barLeft = -series.bars.barWidth / 2;
+ }
+
octx.lineWidth = series.bars.lineWidth;
- octx.strokeStyle = $.color.parse(series.color).scale('a', 0.5).toString();
- var fillStyle = $.color.parse(series.color).scale('a', 0.5).toString();
- var barLeft = series.bars.align == "left" ? 0 : -series.bars.barWidth/2;
+ octx.strokeStyle = highlightColor;
+
drawBar(point[0], point[1], point[2] || 0, barLeft, barLeft + series.bars.barWidth,
- 0, function () { return fillStyle; }, series.xaxis, series.yaxis, octx, series.bars.horizontal, series.bars.lineWidth);
+ function () { return fillStyle; }, series.xaxis, series.yaxis, octx, series.bars.horizontal, series.bars.lineWidth);
}
function getColorOrGradient(spec, bottom, top, defaultColor) {
// supports a simple vertical gradient properly, so that's
// what we support too
var gradient = ctx.createLinearGradient(0, top, 0, bottom);
-
+
for (var i = 0, l = spec.colors.length; i < l; ++i) {
var c = spec.colors[i];
if (typeof c != "string") {
var co = $.color.parse(defaultColor);
if (c.brightness != null)
- co = co.scale('rgb', c.brightness)
+ co = co.scale('rgb', c.brightness);
if (c.opacity != null)
co.a *= c.opacity;
c = co.toString();
}
gradient.addColorStop(i / (l - 1), c);
}
-
+
return gradient;
}
}
}
+ // Add the plot function to the top level of the jQuery object
+
$.plot = function(placeholder, data, options) {
//var t0 = new Date();
var plot = new Plot($(placeholder), data, options, $.plot.plugins);
return plot;
};
- $.plot.version = "0.7";
-
+ $.plot.version = "0.8.3";
+
$.plot.plugins = [];
- // returns a string with the date d formatted according to fmt
- $.plot.formatDate = function(d, fmt, monthNames) {
- var leftPad = function(n) {
- n = "" + n;
- return n.length == 1 ? "0" + n : n;
- };
-
- var r = [];
- var escape = false, padNext = false;
- var hours = d.getUTCHours();
- var isAM = hours < 12;
- if (monthNames == null)
- monthNames = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
-
- if (fmt.search(/%p|%P/) != -1) {
- if (hours > 12) {
- hours = hours - 12;
- } else if (hours == 0) {
- hours = 12;
- }
- }
- for (var i = 0; i < fmt.length; ++i) {
- var c = fmt.charAt(i);
-
- if (escape) {
- switch (c) {
- case 'h': c = "" + hours; break;
- case 'H': c = leftPad(hours); break;
- case 'M': c = leftPad(d.getUTCMinutes()); break;
- case 'S': c = leftPad(d.getUTCSeconds()); break;
- case 'd': c = "" + d.getUTCDate(); break;
- case 'm': c = "" + (d.getUTCMonth() + 1); break;
- case 'y': c = "" + d.getUTCFullYear(); break;
- case 'b': c = "" + monthNames[d.getUTCMonth()]; break;
- case 'p': c = (isAM) ? ("" + "am") : ("" + "pm"); break;
- case 'P': c = (isAM) ? ("" + "AM") : ("" + "PM"); break;
- case '0': c = ""; padNext = true; break;
- }
- if (c && padNext) {
- c = leftPad(c);
- padNext = false;
- }
- r.push(c);
- if (!padNext)
- escape = false;
- }
- else {
- if (c == "%")
- escape = true;
- else
- r.push(c);
- }
- }
- return r.join("");
+ // Also add the plot function as a chainable property
+
+ $.fn.plot = function(data, options) {
+ return this.each(function() {
+ $.plot(this, data, options);
+ });
};
-
+
// round to nearby lower multiple of base
function floorInBase(n, base) {
return base * Math.floor(n / base);
}
-
+
})(jQuery);
dépôts / lhc / web / www.git / blobdiff