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jquery.flot.js
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/* Plugin for jQuery for working with colors.
*
* Version 1.1.
*
* Inspiration from jQuery color animation plugin by John Resig.
*
* Released under the MIT license by Ole Laursen, October 2009.
*
* Examples:
*
* $.color.parse("#fff").scale('rgb', 0.25).add('a', -0.5).toString()
* var c = $.color.extract($("#mydiv"), 'background-color');
* console.log(c.r, c.g, c.b, c.a);
* $.color.make(100, 50, 25, 0.4).toString() // returns "rgba(100,50,25,0.4)"
*
* Note that .scale() and .add() return the same modified object
* instead of making a new one.
*
* V. 1.1: Fix error handling so e.g. parsing an empty string does
* produce a color rather than just crashing.
*/
(function($) {
$.color = {};
// construct color object with some convenient chainable helpers
$.color.make = function (r, g, b, a) {
var o = {};
o.r = r || 0;
o.g = g || 0;
o.b = b || 0;
o.a = a != null ? a : 1;
o.add = function (c, d) {
for (var i = 0; i < c.length; ++i) {
o[c.charAt(i)] += d;
}
return o.normalize();
};
o.scale = function (c, f) {
for (var i = 0; i < c.length; ++i) {
o[c.charAt(i)] *= f;
}
return o.normalize();
};
o.toString = function () {
if (o.a >= 1.0) {
return "rgb(" + [o.r, o.g, o.b].join(",") + ")";
} else {
return "rgba(" + [o.r, o.g, o.b, o.a].join(",") + ")";
}
};
o.normalize = function () {
function clamp(min, value, max) {
return value < min ? min : (value > max ? max : value);
}
o.r = clamp(0, parseInt(o.r), 255);
o.g = clamp(0, parseInt(o.g), 255);
o.b = clamp(0, parseInt(o.b), 255);
o.a = clamp(0, o.a, 1);
return o;
};
o.clone = function () {
return $.color.make(o.r, o.b, o.g, o.a);
};
return o.normalize();
}
// extract CSS color property from element, going up in the DOM
// if it's "transparent"
$.color.extract = function (elem, css) {
var c;
do {
c = elem.css(css).toLowerCase();
// keep going until we find an element that has color, or
// we hit the body or root (have no parent)
if (c !== '' && c !== 'transparent') {
break;
}
elem = elem.parent();
} while (elem.length && !$.nodeName(elem.get(0), "body"));
// catch Safari's way of signalling transparent
if (c === "rgba(0, 0, 0, 0)") {
c = "transparent";
}
return $.color.parse(c);
}
// parse CSS color string (like "rgb(10, 32, 43)" or "#fff"),
// returns color object, if parsing failed, you get black (0, 0,
// 0) out
$.color.parse = function (str) {
var res, m = $.color.make;
// Look for rgb(num,num,num)
res = /rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(str);
if (res) {
return m(parseInt(res[1], 10), parseInt(res[2], 10), parseInt(res[3], 10));
}
// Look for rgba(num,num,num,num)
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)
if (res) {
return m(parseInt(res[1], 10), parseInt(res[2], 10), parseInt(res[3], 10), parseFloat(res[4]));
}
// Look for rgb(num%,num%,num%)
res = /rgb\(\s*([0-9]+(?:\.[0-9]+)?)%\s*,\s*([0-9]+(?:\.[0-9]+)?)%\s*,\s*([0-9]+(?:\.[0-9]+)?)%\s*\)/.exec(str);
if (res) {
return m(parseFloat(res[1]) * 2.55, parseFloat(res[2]) * 2.55, parseFloat(res[3]) * 2.55);
}
// Look for rgba(num%,num%,num%,num)
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);
if (res) {
return m(parseFloat(res[1]) * 2.55, parseFloat(res[2]) * 2.55, parseFloat(res[3]) * 2.55, parseFloat(res[4]));
}
// Look for #a0b1c2
res = /#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(str);
if (res) {
return m(parseInt(res[1], 16), parseInt(res[2], 16), parseInt(res[3], 16));
}
// Look for #fff
res = /#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(str);
if (res) {
return m(parseInt(res[1] + res[1], 16), parseInt(res[2] + res[2], 16), parseInt(res[3] + res[3], 16));
}
// Otherwise, we're most likely dealing with a named color
var name = $.trim(str).toLowerCase();
if (name === "transparent") {
return m(255, 255, 255, 0);
} else {
// default to black
res = lookupColors[name] || [0, 0, 0];
return m(res[0], res[1], res[2]);
}
}
var lookupColors = {
aqua: [0, 255, 255],
azure: [240, 255, 255],
beige: [245, 245, 220],
black: [0, 0, 0],
blue: [0, 0, 255],
brown: [165, 42, 42],
cyan: [0, 255, 255],
darkblue: [0, 0, 139],
darkcyan: [0, 139, 139],
darkgrey: [169, 169, 169],
darkgreen: [0, 100, 0],
darkkhaki: [189, 183, 107],
darkmagenta: [139, 0, 139],
darkolivegreen: [85, 107, 47],
darkorange: [255, 140, 0],
darkorchid: [153, 50, 204],
darkred: [139, 0, 0],
darksalmon: [233, 150, 122],
darkviolet: [148, 0, 211],
fuchsia: [255, 0, 255],
gold: [255, 215, 0],
green: [0, 128, 0],
indigo: [75, 0, 130],
khaki: [240, 230, 140],
lightblue: [173, 216, 230],
lightcyan: [224, 255, 255],
lightgreen: [144, 238, 144],
lightgrey: [211, 211, 211],
lightpink: [255, 182, 193],
lightyellow: [255, 255, 224],
lime: [0, 255, 0],
magenta: [255, 0, 255],
maroon: [128, 0, 0],
navy: [0, 0, 128],
olive: [128, 128, 0],
orange: [255, 165, 0],
pink: [255, 192, 203],
purple: [128, 0, 128],
violet: [128, 0, 128],
red: [255, 0, 0],
silver: [192, 192, 192],
white: [255, 255, 255],
yellow: [255, 255, 0]
};
})(jQuery);
///////////////////////////////////////////////////////////////////////////
// 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() {
var Canvas = function(cls, container) {
var element = container.getElementsByClassName(cls)[0];
if (!element) {
element = document.createElement('canvas');
element.className = cls;
element.style.direction = 'ltr';
element.style.position = 'absolute';
element.style.left = '0px';
element.style.top = '0px';
container.appendChild(element);
// If HTML5 Canvas isn't available, throw
if (!element.getContext) {
throw new Error('Canvas is not available.');
}
}
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
var box = container.getBoundingClientRect();
this.resize(box.width, box.height);
// Collection of HTML div layers for text overlaid onto the canvas
this.SVGContainer = null;
this.SVG = {};
// 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) {
var minSize = 10;
width = width < minSize ? minSize : width;
height = height < minSize ? minSize : 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.getSVGLayer(layerKey),
layerCache = cache[layerKey];
var display = layer.style.display;
layer.style.display = 'none';
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 val = styleCache[key],
positions = val.positions;
for (var i = 0, position; positions[i]; i++) {
position = positions[i];
if (position.active) {
if (!position.rendered) {
layer.appendChild(position.element);
position.rendered = true;
}
} else {
positions.splice(i--, 1);
if (position.rendered) {
position.element.parentNode.removeChild(position.element);
}
}
}
if (positions.length === 0) {
if (val.measured) {
val.measured = false;
} else {
delete styleCache[key];
}
}
}
}
}
}
layer.style.display = display;
}
}
};
// Creates (if necessary) and returns the SVG overlay container.
//
// @param {string} classes String of space-separated CSS classes used to
// uniquely identify the text layer.
// @return {object} The text-layer div.
Canvas.prototype.getSVGLayer = function(classes) {
var layer = this.SVG[classes];
// Create the SVG layer if it doesn't exist
if (!layer) {
// Create the svg layer container, if it doesn't exist
var svgElement;
if (!this.SVGContainer) {
this.SVGContainer = document.createElement('div');
this.SVGContainer.className = 'flot-svg';
this.SVGContainer.style.position = 'absolute';
this.SVGContainer.style.top = '0px';
this.SVGContainer.style.left = '0px';
this.SVGContainer.style.bottom = '0px';
this.SVGContainer.style.right = '0px';
this.SVGContainer.style.pointerEvents = 'none';
this.element.parentNode.appendChild(this.SVGContainer);
svgElement = document.createElementNS('http://www.w3.org/2000/svg', 'svg');
svgElement.style.width = '100%';
svgElement.style.height = '100%';
this.SVGContainer.appendChild(svgElement);
} else {
svgElement = this.SVGContainer.firstChild;
}
layer = document.createElementNS('http://www.w3.org/2000/svg', 'g');
layer.setAttribute('class', classes);
layer.style.position = 'absolute';
layer.style.top = '0px';
layer.style.left = '0px';
layer.style.bottom = '0px';
layer.style.right = '0px';
svgElement.appendChild(layer);
this.SVG[classes] = layer;
}
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 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 HTML div containing the text.
// text: The actual text and is identical with element[0].textContent.
// 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] = {};
}
var key = generateKey(text);
info = styleCache[key];
// If we can't find a matching element in our cache, create a new one
if (!info) {
var element = document.createElementNS('http://www.w3.org/2000/svg', 'text');
var textNode = document.createTextNode(text);
element.appendChild(textNode);
element.style.position = 'absolute';
element.style.maxWidth = width;
element.setAttributeNS(null, 'x', -9999);
element.setAttributeNS(null, 'y', -9999);
if (typeof font === 'object') {
element.style.font = textStyle;
element.style.fill = font.fill;
} else if (typeof font === 'string') {
element.setAttribute('class', font);
}
this.getSVGLayer(layer).appendChild(element);
var elementRect = element.getBBox();
info = styleCache[key] = {
width: elementRect.width,
height: elementRect.height,
measured: true,
element: element,
positions: []
};
element.parentNode.removeChild(element);
}
info.measured = true;
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, transforms) {
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;
}
y += 0.75 * 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; positions[i]; i++) {
position = positions[i];
if (position.x === x && position.y === y && position.text === text) {
position.active = true;
return;
} else if (position.active === false) {
position.active = true;
position.element.setAttributeNS(null, 'x', x);
position.element.setAttributeNS(null, 'y', y);
position.element.textContent = text;
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.cloneNode() : info.element,
text: text,
x: x,
y: y
};
positions.push(position);
// Move the element to its final position within the container
position.element.setAttributeNS(null, 'x', x);
position.element.setAttributeNS(null, 'y', y);
position.element.style.textAlign = halign;
position.element.textContent = text;
if (transforms) {
transforms.forEach(function(t) {
info.element.transform.baseVal.appendItem(t);
});
}
};
/**
*
* 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) {
var info, htmlYCoord;
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;
positions.forEach(function(position) {
position.active = false;
});
}
}
}
}
}
} else {
info = this.getTextInfo(layer, text, font, angle);
positions = info.positions;
positions.forEach(function(position) {
htmlYCoord = y + 0.75 * info.height;
if (position.x === x && position.y === htmlYCoord && position.text === text) {
position.active = false;
}
});
}
};
// Clears the cache used to speed up the text size measurements.
// As an (unfortunate) side effect all text within the text Layer is removed.
// Use this function before plot.setupGrid() and plot.draw() in one of these
// cases:
// 1. The plot just became visible.
// 2. The styles changed.
Canvas.prototype.clearCache = function() {
var cache = this._textCache;
for (var layerKey in cache) {
if (hasOwnProperty.call(cache, layerKey)) {
var layer = this.getSVGLayer(layerKey);
while (layer.firstChild) {
layer.removeChild(layer.firstChild);
}
}
};
this._textCache = {};
};
function generateKey(text) {
return text.replace(/0|1|2|3|4|5|6|7|8|9/g, '0');
}
if (!window.Flot) {
window.Flot = {};
}
window.Flot.Canvas = Canvas;
})();
/* Javascript plotting library for jQuery, version 0.8.3.
Copyright (c) 2007-2014 IOLA and Ole Laursen.
Licensed under the MIT license.
*/
// the actual Flot code
(function($) {
"use strict";
var Canvas = window.Flot.Canvas;
function defaultTickGenerator(axis) {
var ticks = [],
start = $.plot.saturated.saturate(floorInBase(axis.min, axis.tickSize)),
i = 0,
v = Number.NaN,
prev;
if (start === -Number.MAX_VALUE) {
ticks.push(start);
start = floorInBase(axis.min + axis.tickSize, axis.tickSize);
}
do {
prev = v;
//v = start + i * axis.tickSize;
v = $.plot.saturated.multiplyAdd(axis.tickSize, i, start);
ticks.push(v);
++i;
} while (v < axis.max && v !== prev);
return ticks;
}
///////////////////////////////////////////////////////////////////////////
// The top-level container for the entire plot.
function Plot(placeholder, data_, options_, plugins) {
// data is on the form:
// [ series1, series2 ... ]
// where series is either just the data as [ [x1, y1], [x2, y2], ... ]
// or { data: [ [x1, y1], [x2, y2], ... ], label: "some label", ... }
var series = [],
options = {
// the color theme used for graphs
colors: ["#edc240", "#afd8f8", "#cb4b4b", "#4da74d", "#9440ed"],
xaxis: {
show: null, // null = auto-detect, true = always, false = never
position: "bottom", // or "top"
mode: null, // null or "time"
font: null, // null (derived from CSS in placeholder) or object like { size: 11, lineHeight: 13, style: "italic", weight: "bold", family: "sans-serif", variant: "small-caps" }
color: null, // base color, labels, ticks
tickColor: null, // possibly different color of ticks, e.g. "rgba(0,0,0,0.15)"
transform: null, // null or f: number -> number to transform axis
inverseTransform: null, // if transform is set, this should be the inverse function
min: null, // min. value to show, null means set automatically
max: null, // max. value to show, null means set automatically
autoScaleMargin: null, // margin in % to add if autoScale option is on "loose" mode,
autoScale: "exact", // Available modes: "none", "loose", "exact", "sliding-window"
windowSize: null, // null or number. This is the size of sliding-window.
growOnly: null, // grow only, useful for smoother auto-scale, the scales will grow to accomodate data but won't shrink back.
ticks: null, // either [1, 3] or [[1, "a"], 3] or (fn: axis info -> ticks) or app. number of ticks for auto-ticks
tickFormatter: null, // fn: number -> string
showTickLabels: "major", // "none", "endpoints", "major", "all"
labelWidth: null, // size of tick labels in pixels
labelHeight: null,
reserveSpace: null, // whether to reserve space even if axis isn't shown
tickLength: null, // size in pixels of major tick marks
showMinorTicks: null, // true = show minor tick marks, false = hide minor tick marks
showTicks: null, // true = show tick marks, false = hide all tick marks
gridLines: null, // true = show grid lines, false = hide grid lines
alignTicksWithAxis: null, // axis number or null for no sync
tickDecimals: null, // no. of decimals, null means auto
tickSize: null, // number or [number, "unit"]
minTickSize: null, // number or [number, "unit"]
offset: { below: 0, above: 0 }, // the plot drawing offset. this is calculated by the flot.navigate for each axis
boxPosition: { centerX: 0, centerY: 0 } //position of the axis on the corresponding axis box
},
yaxis: {
autoScaleMargin: 0.02, // margin in % to add if autoScale option is on "loose" mode
autoScale: "loose", // Available modes: "none", "loose", "exact"
growOnly: null, // grow only, useful for smoother auto-scale, the scales will grow to accomodate data but won't shrink back.
position: "left", // or "right"
showTickLabels: "major", // "none", "endpoints", "major", "all"
offset: { below: 0, above: 0 }, // the plot drawing offset. this is calculated by the flot.navigate for each axis
boxPosition: { centerX: 0, centerY: 0 } //position of the axis on the corresponding axis box
},
xaxes: [],
yaxes: [],
series: {
points: {
show: false,
radius: 3,
lineWidth: 2, // in pixels
fill: true,
fillColor: "#ffffff",
symbol: 'circle' // or callback
},
lines: {
// we don't put in show: false so we can see
// whether lines were actively disabled
lineWidth: 1, // in pixels
fill: false,
fillColor: null,
steps: false
// Omit 'zero', so we can later default its value to
// match that of the 'fill' option.
},
bars: {
show: false,
lineWidth: 2, // in pixels
barWidth: 1, // in units of the x axis
fill: true,
fillColor: null,
align: "left", // "left", "right", or "center"
zero: true
},
shadowSize: 3,
highlightColor: null
},
grid: {
show: true,
aboveData: false,
color: "#545454", // primary color used for outline and labels
backgroundColor: null, // null for transparent, else color
borderColor: null, // set if different from the grid color
tickColor: null, // color for the ticks, e.g. "rgba(0,0,0,0.15)"
margin: 0, // distance from the canvas edge to the grid
labelMargin: 5, // in pixels
axisMargin: 8, // in pixels
borderWidth: 1, // in pixels
minBorderMargin: null, // in pixels, null means taken from points radius
markings: null, // array of ranges or fn: axes -> array of ranges
markingsColor: "#f4f4f4",
markingsLineWidth: 2,
// interactive stuff
clickable: false,
hoverable: false,
autoHighlight: true, // highlight in case mouse is near
mouseActiveRadius: 10 // how far the mouse can be away to activate an item
},
interaction: {
redrawOverlayInterval: 1000 / 60 // time between updates, -1 means in same flow
},
hooks: {}
},
surface = null, // the canvas for the plot itself
overlay = null, // canvas for interactive stuff on top of plot
eventHolder = null, // jQuery object that events should be bound to
ctx = null,
octx = null,
xaxes = [],
yaxes = [],
plotOffset = {
left: 0,
right: 0,
top: 0,
bottom: 0
},
plotWidth = 0,
plotHeight = 0,
hooks = {
processOptions: [],
processRawData: [],
processDatapoints: [],
processOffset: [],
setupGrid: [],
adjustSeriesDataRange: [],
setRange: [],
drawBackground: [],
drawSeries: [],
drawAxis: [],
draw: [],
axisReserveSpace: [],
bindEvents: [],
drawOverlay: [],
resize: [],
shutdown: []
},
plot = this;
// interactive features
var highlights = [],
redrawTimeout = null;
// public functions
plot.setData = setData;
plot.setupGrid = setupGrid;
plot.draw = draw;
plot.getPlaceholder = function() {
return placeholder;
};
plot.getCanvas = function() {
return surface.element;
};
plot.getSurface = function() {
return surface;
};
plot.getEventHolder = function() {
return eventHolder[0];
};
plot.getPlotOffset = function() {
return plotOffset;
};
plot.width = function() {
return plotWidth;
};
plot.height = function() {
return plotHeight;
};
plot.offset = function() {
var o = eventHolder.offset();
o.left += plotOffset.left;
o.top += plotOffset.top;
return o;
};
plot.getData = function() {
return series;
};
plot.getAxes = function() {
var res = {};
$.each(xaxes.concat(yaxes), function(_, axis) {
if (axis) {
res[axis.direction + (axis.n !== 1 ? axis.n : "") + "axis"] = axis;
}
});
return res;
};
plot.getXAxes = function() {
return xaxes;
};
plot.getYAxes = function() {
return yaxes;
};
plot.c2p = canvasToCartesianAxisCoords;
plot.p2c = cartesianAxisToCanvasCoords;
plot.getOptions = function() {
return options;
};
plot.highlight = highlight;
plot.unhighlight = unhighlight;
plot.triggerRedrawOverlay = triggerRedrawOverlay;
plot.pointOffset = function(point) {
return {
left: parseInt(xaxes[axisNumber(point, "x") - 1].p2c(+point.x) + plotOffset.left, 10),
top: parseInt(yaxes[axisNumber(point, "y") - 1].p2c(+point.y) + plotOffset.top, 10)
};
};
plot.shutdown = shutdown;
plot.destroy = function() {
shutdown();
placeholder.removeData("plot").empty();
series = [];
options = null;
surface = null;
overlay = null;
eventHolder = null;
ctx = null;
octx = null;
xaxes = [];
yaxes = [];
hooks = null;
highlights = [];
plot = null;
};
plot.resize = function() {
var width = placeholder.width(),
height = placeholder.height();
surface.resize(width, height);
overlay.resize(width, height);
executeHooks(hooks.resize, [width, height]);
};
plot.clearTextCache = function () {
surface.clearCache();
overlay.clearCache();
};
plot.computeRangeForDataSeries = computeRangeForDataSeries;
plot.adjustSeriesDataRange = adjustSeriesDataRange;
plot.findNearbyItem = findNearbyItem;
plot.findNearbyInterpolationPoint = findNearbyInterpolationPoint;
plot.computeValuePrecision = computeValuePrecision;
plot.defaultTickFormatter = defaultTickFormatter;
plot.expRepTickFormatter = expRepTickFormatter;