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/* Javascript plotting library for jQuery, version 0.8.3.
Copyright (c) 2007-2014 IOLA and Ole Laursen.
Licensed under the MIT license.
*/
// first an inline dependency, jquery.colorhelpers.js, we inline it here
// for convenience
/* Plugin for jQuery for working with colors.
*
* Version 1.1.
*
* Inspiration from jQuery color animation plugin by John Resig.
*
* Released under the MIT license by Ole Laursen, October 2009.
*
* Examples:
*
* $.color.parse("#fff").scale('rgb', 0.25).add('a', -0.5).toString()
* var c = $.color.extract($("#mydiv"), 'background-color');
* console.log(c.r, c.g, c.b, c.a);
* $.color.make(100, 50, 25, 0.4).toString() // returns "rgba(100,50,25,0.4)"
*
* Note that .scale() and .add() return the same modified object
* instead of making a new one.
*
* V. 1.1: Fix error handling so e.g. parsing an empty string does
* produce a color rather than just crashing.
*/
(function($){$.color={};$.color.make=function(r,g,b,a){var o={};o.r=r||0;o.g=g||0;o.b=b||0;o.a=a!=null?a:1;o.add=function(c,d){for(var i=0;i<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
colors: ["#edc240", "#afd8f8", "#cb4b4b", "#4da74d", "#9440ed"],
legend: {
show: true,
noColumns: 1, // number of colums in legend table
labelFormatter: null, // fn: string -> string
labelBoxBorderColor: "#ccc", // border color for the little label boxes
container: null, // container (as jQuery object) to put legend in, null means default on top of graph
position: "ne", // position of default legend container within plot
margin: 5, // distance from grid edge to default legend container within plot
backgroundColor: null, // null means auto-detect
backgroundOpacity: 0.85, // set to 0 to avoid background
sorted: null // default to no legend sorting
},
xaxis: {
show: null, // null = auto-detect, true = always, false = never
position: "bottom", // or "top"
mode: null, // null or "time"
font: null, // null (derived from CSS in placeholder) or object like { size: 11, lineHeight: 13, style: "italic", weight: "bold", family: "sans-serif", variant: "small-caps" }
color: null, // base color, labels, ticks
tickColor: null, // possibly different color of ticks, e.g. "rgba(0,0,0,0.15)"
transform: null, // null or f: number -> number to transform axis
inverseTransform: null, // if transform is set, this should be the inverse function
min: null, // min. value to show, null means set automatically
max: null, // max. value to show, null means set automatically
autoscaleMargin: null, // margin in % to add if auto-setting min/max
ticks: null, // either [1, 3] or [[1, "a"], 3] or (fn: axis info -> ticks) or app. number of ticks for auto-ticks
tickFormatter: null, // fn: number -> string
labelWidth: null, // size of tick labels in pixels
labelHeight: null,
reserveSpace: null, // whether to reserve space even if axis isn't shown
tickLength: null, // size in pixels of ticks, or "full" for whole line
alignTicksWithAxis: null, // axis number or null for no sync
tickDecimals: null, // no. of decimals, null means auto
tickSize: null, // number or [number, "unit"]
minTickSize: null // number or [number, "unit"]
},
yaxis: {
autoscaleMargin: 0.02,
position: "left" // or "right"
},
xaxes: [],
yaxes: [],
series: {
points: {
show: false,
radius: 3,
lineWidth: 2, // in pixels
fill: true,
fillColor: "#ffffff",
symbol: "circle" // or callback
},
lines: {
// we don't put in show: false so we can see
// whether lines were actively disabled
lineWidth: 2, // in pixels
fill: false,
fillColor: null,
steps: false
// Omit 'zero', so we can later default its value to
// match that of the 'fill' option.
},
bars: {
show: false,
lineWidth: 2, // in pixels
barWidth: 1, // in units of the x axis
fill: true,
fillColor: null,
align: "left", // "left", "right", or "center"
horizontal: false,
zero: true
},
shadowSize: 3,
highlightColor: null
},
grid: {
show: true,
aboveData: false,
color: "#545454", // primary color used for outline and labels
backgroundColor: null, // null for transparent, else color
borderColor: null, // set if different from the grid color
tickColor: null, // color for the ticks, e.g. "rgba(0,0,0,0.15)"
margin: 0, // distance from the canvas edge to the grid
labelMargin: 5, // in pixels
axisMargin: 8, // in pixels
borderWidth: 2, // in pixels
minBorderMargin: null, // in pixels, null means taken from points radius
markings: null, // array of ranges or fn: axes -> array of ranges
markingsColor: "#f4f4f4",
markingsLineWidth: 2,
// interactive stuff
clickable: false,
hoverable: false,
autoHighlight: true, // highlight in case mouse is near
mouseActiveRadius: 10 // how far the mouse can be away to activate an item
},
interaction: {
redrawOverlayInterval: 1000/60 // time between updates, -1 means in same flow
},
hooks: {}
},
surface = null, // the canvas for the plot itself
overlay = null, // canvas for interactive stuff on top of plot
eventHolder = null, // jQuery object that events should be bound to
ctx = null, octx = null,
xaxes = [], yaxes = [],
plotOffset = { left: 0, right: 0, top: 0, bottom: 0},
plotWidth = 0, plotHeight = 0,
hooks = {
processOptions: [],
processRawData: [],
processDatapoints: [],
processOffset: [],
drawBackground: [],
drawSeries: [],
draw: [],
bindEvents: [],
drawOverlay: [],
shutdown: []
},
plot = this;
// public functions
plot.setData = setData;
plot.setupGrid = setupGrid;
plot.draw = draw;
plot.getPlaceholder = function() { return placeholder; };
plot.getCanvas = function() { return surface.element; };
plot.getPlotOffset = function() { return plotOffset; };
plot.width = function () { return plotWidth; };
plot.height = function () { return plotHeight; };
plot.offset = function () {
var o = eventHolder.offset();
o.left += plotOffset.left;
o.top += plotOffset.top;
return o;
};
plot.getData = function () { return series; };
plot.getAxes = function () {
var res = {}, i;
$.each(xaxes.concat(yaxes), function (_, axis) {
if (axis)
res[axis.direction + (axis.n != 1 ? axis.n : "") + "axis"] = axis;
});
return res;
};
plot.getXAxes = function () { return xaxes; };
plot.getYAxes = function () { return yaxes; };
plot.c2p = canvasToAxisCoords;
plot.p2c = axisToCanvasCoords;
plot.getOptions = function () { return options; };
plot.highlight = highlight;
plot.unhighlight = unhighlight;
plot.triggerRedrawOverlay = triggerRedrawOverlay;
plot.pointOffset = function(point) {
return {
left: parseInt(xaxes[axisNumber(point, "x") - 1].p2c(+point.x) + plotOffset.left, 10),
top: parseInt(yaxes[axisNumber(point, "y") - 1].p2c(+point.y) + plotOffset.top, 10)
};
};
plot.shutdown = shutdown;
plot.destroy = function () {
shutdown();
placeholder.removeData("plot").empty();
series = [];
options = null;
surface = null;
overlay = null;
eventHolder = null;
ctx = null;
octx = null;
xaxes = [];
yaxes = [];
hooks = null;
highlights = [];
plot = null;
};
plot.resize = function () {
var width = placeholder.width(),
height = placeholder.height();
surface.resize(width, height);
overlay.resize(width, height);
};
// public attributes
plot.hooks = hooks;
// initialize
initPlugins(plot);
parseOptions(options_);
setupCanvases();
setData(data_);
setupGrid();
draw();
bindEvents();
function executeHooks(hook, args) {
args = [plot].concat(args);
for (var i = 0; i < hook.length; ++i)
hook[i].apply(this, args);
}
function initPlugins() {
// References to key classes, allowing plugins to modify them
var classes = {
Canvas: Canvas
};
for (var i = 0; i < plugins.length; ++i) {
var p = plugins[i];
p.init(plot, classes);
if (p.options)
$.extend(true, options, p.options);
}
}
function parseOptions(opts) {
$.extend(true, options, opts);
// $.extend merges arrays, rather than replacing them. When less
// colors are provided than the size of the default palette, we
// end up with those colors plus the remaining defaults, which is
// not expected behavior; avoid it by replacing them here.
if (opts && opts.colors) {
options.colors = opts.colors;
}
if (options.xaxis.color == null)
options.xaxis.color = $.color.parse(options.grid.color).scale('a', 0.22).toString();
if (options.yaxis.color == null)
options.yaxis.color = $.color.parse(options.grid.color).scale('a', 0.22).toString();
if (options.xaxis.tickColor == null) // grid.tickColor for back-compatibility
options.xaxis.tickColor = options.grid.tickColor || options.xaxis.color;
if (options.yaxis.tickColor == null) // grid.tickColor for back-compatibility
options.yaxis.tickColor = options.grid.tickColor || options.yaxis.color;
if (options.grid.borderColor == null)
options.grid.borderColor = options.grid.color;
if (options.grid.tickColor == null)
options.grid.tickColor = $.color.parse(options.grid.color).scale('a', 0.22).toString();
// Fill in defaults for axis options, including any unspecified
// font-spec fields, if a font-spec was provided.
// If no x/y axis options were provided, create one of each anyway,
// since the rest of the code assumes that they exist.
var i, axisOptions, axisCount,
fontSize = placeholder.css("font-size"),
fontSizeDefault = fontSize ? +fontSize.replace("px", "") : 13,
fontDefaults = {
style: placeholder.css("font-style"),
size: Math.round(0.8 * fontSizeDefault),
variant: placeholder.css("font-variant"),
weight: placeholder.css("font-weight"),
family: placeholder.css("font-family")
};
axisCount = options.xaxes.length || 1;
for (i = 0; i < axisCount; ++i) {
axisOptions = options.xaxes[i];
if (axisOptions && !axisOptions.tickColor) {
axisOptions.tickColor = axisOptions.color;
}
axisOptions = $.extend(true, {}, options.xaxis, axisOptions);
options.xaxes[i] = axisOptions;
if (axisOptions.font) {
axisOptions.font = $.extend({}, fontDefaults, axisOptions.font);
if (!axisOptions.font.color) {
axisOptions.font.color = axisOptions.color;
}
if (!axisOptions.font.lineHeight) {
axisOptions.font.lineHeight = Math.round(axisOptions.font.size * 1.15);
}
}
}
axisCount = options.yaxes.length || 1;
for (i = 0; i < axisCount; ++i) {
axisOptions = options.yaxes[i];
if (axisOptions && !axisOptions.tickColor) {
axisOptions.tickColor = axisOptions.color;
}
axisOptions = $.extend(true, {}, options.yaxis, axisOptions);
options.yaxes[i] = axisOptions;
if (axisOptions.font) {
axisOptions.font = $.extend({}, fontDefaults, axisOptions.font);
if (!axisOptions.font.color) {
axisOptions.font.color = axisOptions.color;
}
if (!axisOptions.font.lineHeight) {
axisOptions.font.lineHeight = Math.round(axisOptions.font.size * 1.15);
}
}
}
// backwards compatibility, to be removed in future
if (options.xaxis.noTicks && options.xaxis.ticks == null)
options.xaxis.ticks = options.xaxis.noTicks;
if (options.yaxis.noTicks && options.yaxis.ticks == null)
options.yaxis.ticks = options.yaxis.noTicks;
if (options.x2axis) {
options.xaxes[1] = $.extend(true, {}, options.xaxis, options.x2axis);
options.xaxes[1].position = "top";
// Override the inherit to allow the axis to auto-scale
if (options.x2axis.min == null) {
options.xaxes[1].min = null;
}
if (options.x2axis.max == null) {
options.xaxes[1].max = null;
}
}
if (options.y2axis) {
options.yaxes[1] = $.extend(true, {}, options.yaxis, options.y2axis);
options.yaxes[1].position = "right";
// Override the inherit to allow the axis to auto-scale
if (options.y2axis.min == null) {
options.yaxes[1].min = null;
}
if (options.y2axis.max == null) {
options.yaxes[1].max = null;
}
}
if (options.grid.coloredAreas)
options.grid.markings = options.grid.coloredAreas;
if (options.grid.coloredAreasColor)
options.grid.markingsColor = options.grid.coloredAreasColor;
if (options.lines)
$.extend(true, options.series.lines, options.lines);
if (options.points)
$.extend(true, options.series.points, options.points);
if (options.bars)
$.extend(true, options.series.bars, options.bars);
if (options.shadowSize != null)
options.series.shadowSize = options.shadowSize;
if (options.highlightColor != null)
options.series.highlightColor = options.highlightColor;
// save options on axes for future reference
for (i = 0; i < options.xaxes.length; ++i)
getOrCreateAxis(xaxes, i + 1).options = options.xaxes[i];
for (i = 0; i < options.yaxes.length; ++i)
getOrCreateAxis(yaxes, i + 1).options = options.yaxes[i];
// add hooks from options
for (var n in hooks)
if (options.hooks[n] && options.hooks[n].length)
hooks[n] = hooks[n].concat(options.hooks[n]);
executeHooks(hooks.processOptions, [options]);
}
function setData(d) {
series = parseData(d);
fillInSeriesOptions();
processData();
}
function parseData(d) {
var res = [];
for (var i = 0; i < d.length; ++i) {
var s = $.extend(true, {}, options.series);
if (d[i].data != null) {
s.data = d[i].data; // move the data instead of deep-copy
delete d[i].data;
$.extend(true, s, d[i]);
d[i].data = s.data;
}
else
s.data = d[i];
res.push(s);
}
return res;
}
function axisNumber(obj, coord) {
var a = obj[coord + "axis"];
if (typeof a == "object") // if we got a real axis, extract number
a = a.n;
if (typeof a != "number")
a = 1; // default to first axis
return a;
}
function allAxes() {
// return flat array without annoying null entries
return $.grep(xaxes.concat(yaxes), function (a) { return a; });
}
function canvasToAxisCoords(pos) {
// return an object with x/y corresponding to all used axes
var res = {}, i, axis;
for (i = 0; i < xaxes.length; ++i) {
axis = xaxes[i];
if (axis && axis.used)
res["x" + axis.n] = axis.c2p(pos.left);
}
for (i = 0; i < yaxes.length; ++i) {
axis = yaxes[i];
if (axis && axis.used)
res["y" + axis.n] = axis.c2p(pos.top);
}
if (res.x1 !== undefined)
res.x = res.x1;
if (res.y1 !== undefined)
res.y = res.y1;
return res;
}
function axisToCanvasCoords(pos) {
// get canvas coords from the first pair of x/y found in pos
var res = {}, i, axis, key;
for (i = 0; i < xaxes.length; ++i) {
axis = xaxes[i];
if (axis && axis.used) {
key = "x" + axis.n;
if (pos[key] == null && axis.n == 1)
key = "x";
if (pos[key] != null) {
res.left = axis.p2c(pos[key]);
break;
}
}
}
for (i = 0; i < yaxes.length; ++i) {
axis = yaxes[i];
if (axis && axis.used) {
key = "y" + axis.n;
if (pos[key] == null && axis.n == 1)
key = "y";
if (pos[key] != null) {
res.top = axis.p2c(pos[key]);
break;
}
}
}
return res;
}
function getOrCreateAxis(axes, number) {
if (!axes[number - 1])
axes[number - 1] = {
n: number, // save the number for future reference
direction: axes == xaxes ? "x" : "y",
options: $.extend(true, {}, axes == xaxes ? options.xaxis : options.yaxis)
};
return axes[number - 1];
}
function fillInSeriesOptions() {
var neededColors = series.length, maxIndex = -1, i;
// Subtract the number of series that already have fixed colors or
// color indexes from the number that we still need to generate.
for (i = 0; i < series.length; ++i) {
var sc = series[i].color;
if (sc != null) {
neededColors--;
if (typeof sc == "number" && sc > maxIndex) {
maxIndex = sc;
}
}
}
// If any of the series have fixed color indexes, then we need to
// generate at least as many colors as the highest index.
if (neededColors <= maxIndex) {
neededColors = maxIndex + 1;
}
// Generate all the colors, using first the option colors and then
// variations on those colors once they're exhausted.
var c, colors = [], colorPool = options.colors,
colorPoolSize = colorPool.length, variation = 0;
for (i = 0; i < neededColors; i++) {
c = $.color.parse(colorPool[i % colorPoolSize] || "#666");
// Each time we exhaust the colors in the pool we adjust
// a scaling factor used to produce more variations on
// those colors. The factor alternates negative/positive
// to produce lighter/darker colors.
// Reset the variation after every few cycles, or else
// it will end up producing only white or black colors.
if (i % colorPoolSize == 0 && i) {
if (variation >= 0) {
if (variation < 0.5) {
variation = -variation - 0.2;
} else variation = 0;
} else variation = -variation;
}
colors[i] = c.scale('rgb', 1 + variation);
}
// Finalize the series options, filling in their colors
var colori = 0, s;
for (i = 0; i < series.length; ++i) {
s = series[i];
// assign colors
if (s.color == null) {
s.color = colors[colori].toString();
++colori;
}
else if (typeof s.color == "number")
s.color = colors[s.color].toString();
// turn on lines automatically in case nothing is set
if (s.lines.show == null) {
var v, show = true;
for (v in s)
if (s[v] && s[v].show) {
show = false;
break;
}
if (show)
s.lines.show = true;
}
// If nothing was provided for lines.zero, default it to match
// lines.fill, since areas by default should extend to zero.
if (s.lines.zero == null) {
s.lines.zero = !!s.lines.fill;
}
// setup axes
s.xaxis = getOrCreateAxis(xaxes, axisNumber(s, "x"));
s.yaxis = getOrCreateAxis(yaxes, axisNumber(s, "y"));
}
}
function processData() {
var topSentry = Number.POSITIVE_INFINITY,
bottomSentry = Number.NEGATIVE_INFINITY,
fakeInfinity = Number.MAX_VALUE,
i, j, k, m, length,
s, points, ps, x, y, axis, val, f, p,
data, format;
function updateAxis(axis, min, max) {
if (min < axis.datamin && min != -fakeInfinity)
axis.datamin = min;
if (max > axis.datamax && max != fakeInfinity)
axis.datamax = max;
}
$.each(allAxes(), function (_, axis) {
// init axis
axis.datamin = topSentry;
axis.datamax = bottomSentry;
axis.used = false;
});
for (i = 0; i < series.length; ++i) {
s = series[i];
s.datapoints = { points: [] };
executeHooks(hooks.processRawData, [ s, s.data, s.datapoints ]);
}
// first pass: clean and copy data
for (i = 0; i < series.length; ++i) {
s = series[i];
data = s.data;
format = s.datapoints.format;
if (!format) {
format = [];
// find out how to copy
format.push({ x: true, number: true, required: true });
format.push({ y: true, number: true, required: true });
if (s.bars.show || (s.lines.show && s.lines.fill)) {
var autoscale = !!((s.bars.show && s.bars.zero) || (s.lines.show && s.lines.zero));
format.push({ y: true, number: true, required: false, defaultValue: 0, autoscale: autoscale });
if (s.bars.horizontal) {
delete format[format.length - 1].y;
format[format.length - 1].x = true;
}
}
s.datapoints.format = format;
}
if (s.datapoints.pointsize != null)
continue; // already filled in
s.datapoints.pointsize = format.length;
ps = s.datapoints.pointsize;
points = s.datapoints.points;
var insertSteps = s.lines.show && s.lines.steps;
s.xaxis.used = s.yaxis.used = true;
for (j = k = 0; j < data.length; ++j, k += ps) {
p = data[j];
var nullify = p == null;
if (!nullify) {
for (m = 0; m < ps; ++m) {
val = p[m];
f = format[m];
if (f) {
if (f.number && val != null) {
val = +val; // convert to number
if (isNaN(val))
val = null;
else if (val == Infinity)
val = fakeInfinity;
else if (val == -Infinity)
val = -fakeInfinity;
}
if (val == null) {
if (f.required)
nullify = true;
if (f.defaultValue != null)
val = f.defaultValue;
}
}
points[k + m] = val;
}
}
if (nullify) {
for (m = 0; m < ps; ++m) {
val = points[k + m];
if (val != null) {
f = format[m];
// extract min/max info
if (f.autoscale !== false) {
if (f.x) {
updateAxis(s.xaxis, val, val);
}
if (f.y) {
updateAxis(s.yaxis, val, val);
}
}
}
points[k + m] = null;
}
}
else {
// a little bit of line specific stuff that
// perhaps shouldn't be here, but lacking
// better means...
if (insertSteps && k > 0
&& points[k - ps] != null
&& points[k - ps] != points[k]
&& points[k - ps + 1] != points[k + 1]) {
// copy the point to make room for a middle point
for (m = 0; m < ps; ++m)
points[k + ps + m] = points[k + m];
// middle point has same y
points[k + 1] = points[k - ps + 1];
// we've added a point, better reflect that
k += ps;
}
}
}
}
// give the hooks a chance to run
for (i = 0; i < series.length; ++i) {
s = series[i];
executeHooks(hooks.processDatapoints, [ s, s.datapoints]);
}
// second pass: find datamax/datamin for auto-scaling
for (i = 0; i < series.length; ++i) {
s = series[i];
points = s.datapoints.points;
ps = s.datapoints.pointsize;
format = s.datapoints.format;
var xmin = topSentry, ymin = topSentry,
xmax = bottomSentry, ymax = bottomSentry;
for (j = 0; j < points.length; j += ps) {
if (points[j] == null)
continue;
for (m = 0; m < ps; ++m) {
val = points[j + m];
f = format[m];
if (!f || f.autoscale === false || val == fakeInfinity || val == -fakeInfinity)
continue;
if (f.x) {
if (val < xmin)
xmin = val;
if (val > xmax)
xmax = val;
}
if (f.y) {
if (val < ymin)
ymin = val;
if (val > ymax)
ymax = val;
}
}
}
if (s.bars.show) {
// make sure we got room for the bar on the dancing floor
var delta;
switch (s.bars.align) {
case "left":
delta = 0;
break;
case "right":
delta = -s.bars.barWidth;
break;
default:
delta = -s.bars.barWidth / 2;
}
if (s.bars.horizontal) {
ymin += delta;
ymax += delta + s.bars.barWidth;
}
else {
xmin += delta;
xmax += delta + s.bars.barWidth;
}
}
updateAxis(s.xaxis, xmin, xmax);
updateAxis(s.yaxis, ymin, ymax);
}
$.each(allAxes(), function (_, axis) {
if (axis.datamin == topSentry)
axis.datamin = null;
if (axis.datamax == bottomSentry)
axis.datamax = null;
});
}
function setupCanvases() {
// Make sure the placeholder is clear of everything except canvases
// from a previous plot in this container that we'll try to re-use.
placeholder.css("padding", 0) // padding messes up the positioning
.children().filter(function(){
return !$(this).hasClass("flot-overlay") && !$(this).hasClass('flot-base');
}).remove();
if (placeholder.css("position") == 'static')
placeholder.css("position", "relative"); // for positioning labels and overlay
surface = new Canvas("flot-base", placeholder);
overlay = new Canvas("flot-overlay", placeholder); // overlay canvas for interactive features
ctx = surface.context;
octx = overlay.context;
// define which element we're listening for events on
eventHolder = $(overlay.element).unbind();
// If we're re-using a plot object, shut down the old one
var existing = placeholder.data("plot");
if (existing) {
existing.shutdown();
overlay.clear();
}
// save in case we get replotted
placeholder.data("plot", plot);
}
function bindEvents() {
// bind events
if (options.grid.hoverable) {
eventHolder.mousemove(onMouseMove);
// Use bind, rather than .mouseleave, because we officially
// still support jQuery 1.2.6, which doesn't define a shortcut
// for mouseenter or mouseleave. This was a bug/oversight that
// was fixed somewhere around 1.3.x. We can return to using
// .mouseleave when we drop support for 1.2.6.
eventHolder.bind("mouseleave", onMouseLeave);
}
if (options.grid.clickable)
eventHolder.click(onClick);
executeHooks(hooks.bindEvents, [eventHolder]);
}
function shutdown() {
if (redrawTimeout)
clearTimeout(redrawTimeout);
eventHolder.unbind("mousemove", onMouseMove);
eventHolder.unbind("mouseleave", onMouseLeave);
eventHolder.unbind("click", onClick);
executeHooks(hooks.shutdown, [eventHolder]);
}
function setTransformationHelpers(axis) {
// set helper functions on the axis, assumes plot area
// has been computed already
function identity(x) { return x; }
var s, m, t = axis.options.transform || identity,
it = axis.options.inverseTransform;
// precompute how much the axis is scaling a point
// in canvas space
if (axis.direction == "x") {
s = axis.scale = plotWidth / Math.abs(t(axis.max) - t(axis.min));
m = Math.min(t(axis.max), t(axis.min));
}
else {
s = axis.scale = plotHeight / Math.abs(t(axis.max) - t(axis.min));
s = -s;
m = Math.max(t(axis.max), t(axis.min));
}
// data point to canvas coordinate
if (t == identity) // slight optimization
axis.p2c = function (p) { return (p - m) * s; };
else
axis.p2c = function (p) { return (t(p) - m) * s; };
// canvas coordinate to data point
if (!it)
axis.c2p = function (c) { return m + c / s; };
else
axis.c2p = function (c) { return it(m + c / s); };
}
function measureTickLabels(axis) {
var opts = axis.options,
ticks = axis.ticks || [],
labelWidth = opts.labelWidth || 0,
labelHeight = opts.labelHeight || 0,
maxWidth = labelWidth || (axis.direction == "x" ? Math.floor(surface.width / (ticks.length || 1)) : null),
legacyStyles = axis.direction + "Axis " + axis.direction + axis.n + "Axis",
layer = "flot-" + axis.direction + "-axis flot-" + axis.direction + axis.n + "-axis " + legacyStyles,
font = opts.font || "flot-tick-label tickLabel";
for (var i = 0; i < ticks.length; ++i) {
var t = ticks[i];
if (!t.label)
continue;
var info = surface.getTextInfo(layer, t.label, font, null, maxWidth);
labelWidth = Math.max(labelWidth, info.width);
labelHeight = Math.max(labelHeight, info.height);
}
axis.labelWidth = opts.labelWidth || labelWidth;
axis.labelHeight = opts.labelHeight || labelHeight;
}
function allocateAxisBoxFirstPhase(axis) {
// find the bounding box of the axis by looking at label
// widths/heights and ticks, make room by diminishing the
// plotOffset; this first phase only looks at one
// dimension per axis, the other dimension depends on the
// other axes so will have to wait
var lw = axis.labelWidth,
lh = axis.labelHeight,
pos = axis.options.position,
isXAxis = axis.direction === "x",
tickLength = axis.options.tickLength,
axisMargin = options.grid.axisMargin,
padding = options.grid.labelMargin,
innermost = true,
outermost = true,
first = true,
found = false;
// Determine the axis's position in its direction and on its side
$.each(isXAxis ? xaxes : yaxes, function(i, a) {
if (a && (a.show || a.reserveSpace)) {
if (a === axis) {
found = true;
} else if (a.options.position === pos) {
if (found) {
outermost = false;
} else {
innermost = false;
}
}
if (!found) {
first = false;
}
}
});
// The outermost axis on each side has no margin
if (outermost) {
axisMargin = 0;
}
// The ticks for the first axis in each direction stretch across
if (tickLength == null) {
tickLength = first ? "full" : 5;
}
if (!isNaN(+tickLength))
padding += +tickLength;
if (isXAxis) {
lh += padding;
if (pos == "bottom") {
plotOffset.bottom += lh + axisMargin;
axis.box = { top: surface.height - plotOffset.bottom, height: lh };
}
else {
axis.box = { top: plotOffset.top + axisMargin, height: lh };
plotOffset.top += lh + axisMargin;
}
}
else {
lw += padding;
if (pos == "left") {
axis.box = { left: plotOffset.left + axisMargin, width: lw };
plotOffset.left += lw + axisMargin;
}
else {
plotOffset.right += lw + axisMargin;
axis.box = { left: surface.width - plotOffset.right, width: lw };
}
}
// save for future reference
axis.position = pos;
axis.tickLength = tickLength;
axis.box.padding = padding;
axis.innermost = innermost;
}
function allocateAxisBoxSecondPhase(axis) {
// now that all axis boxes have been placed in one
// dimension, we can set the remaining dimension coordinates
if (axis.direction == "x") {
axis.box.left = plotOffset.left - axis.labelWidth / 2;
axis.box.width = surface.width - plotOffset.left - plotOffset.right + axis.labelWidth;
}
else {
axis.box.top = plotOffset.top - axis.labelHeight / 2;
axis.box.height = surface.height - plotOffset.bottom - plotOffset.top + axis.labelHeight;
}
}
function adjustLayoutForThingsStickingOut() {
// possibly adjust plot offset to ensure everything stays
// inside the canvas and isn't clipped off
var minMargin = options.grid.minBorderMargin,
axis, i;
// check stuff from the plot (FIXME: this should just read
// a value from the series, otherwise it's impossible to
// customize)
if (minMargin == null) {
minMargin = 0;
for (i = 0; i < series.length; ++i)
minMargin = Math.max(minMargin, 2 * (series[i].points.radius + series[i].points.lineWidth/2));
}
var margins = {
left: minMargin,
right: minMargin,
top: minMargin,
bottom: minMargin
};
// check axis labels, note we don't check the actual
// labels but instead use the overall width/height to not
// jump as much around with replots
$.each(allAxes(), function (_, axis) {
if (axis.reserveSpace && axis.ticks && axis.ticks.length) {
if (axis.direction === "x") {
margins.left = Math.max(margins.left, axis.labelWidth / 2);
margins.right = Math.max(margins.right, axis.labelWidth / 2);
} else {
margins.bottom = Math.max(margins.bottom, axis.labelHeight / 2);
margins.top = Math.max(margins.top, axis.labelHeight / 2);
}
}
});
plotOffset.left = Math.ceil(Math.max(margins.left, plotOffset.left));
plotOffset.right = Math.ceil(Math.max(margins.right, plotOffset.right));
plotOffset.top = Math.ceil(Math.max(margins.top, plotOffset.top));
plotOffset.bottom = Math.ceil(Math.max(margins.bottom, plotOffset.bottom));
}
function setupGrid() {
var i, axes = allAxes(), showGrid = options.grid.show;
// Initialize the plot's offset from the edge of the canvas
for (var a in plotOffset) {
var margin = options.grid.margin || 0;
plotOffset[a] = typeof margin == "number" ? margin : margin[a] || 0;
}
executeHooks(hooks.processOffset, [plotOffset]);
// If the grid is visible, add its border width to the offset
for (var a in plotOffset) {
if(typeof(options.grid.borderWidth) == "object") {
plotOffset[a] += showGrid ? options.grid.borderWidth[a] : 0;
}
else {
plotOffset[a] += showGrid ? options.grid.borderWidth : 0;
}
}
$.each(axes, function (_, axis) {
var axisOpts = axis.options;
axis.show = axisOpts.show == null ? axis.used : axisOpts.show;
axis.reserveSpace = axisOpts.reserveSpace == null ? axis.show : axisOpts.reserveSpace;
setRange(axis);
});
if (showGrid) {
var allocatedAxes = $.grep(axes, function (axis) {
return axis.show || axis.reserveSpace;
});
$.each(allocatedAxes, function (_, axis) {
// make the ticks
setupTickGeneration(axis);
setTicks(axis);
snapRangeToTicks(axis, axis.ticks);
// find labelWidth/Height for axis
measureTickLabels(axis);
});
// with all dimensions calculated, we can compute the
// axis bounding boxes, start from the outside
// (reverse order)
for (i = allocatedAxes.length - 1; i >= 0; --i)
allocateAxisBoxFirstPhase(allocatedAxes[i]);
// make sure we've got enough space for things that
// might stick out
adjustLayoutForThingsStickingOut();
$.each(allocatedAxes, function (_, axis) {
allocateAxisBoxSecondPhase(axis);
});
}
plotWidth = surface.width - plotOffset.left - plotOffset.right;
plotHeight = surface.height - plotOffset.bottom - plotOffset.top;
// now we got the proper plot dimensions, we can compute the scaling
$.each(axes, function (_, axis) {
setTransformationHelpers(axis);
});
if (showGrid) {
drawAxisLabels();
}
insertLegend();
}
function setRange(axis) {
var opts = axis.options,
min = +(opts.min != null ? opts.min : axis.datamin),
max = +(opts.max != null ? opts.max : axis.datamax),
delta = max - min;
if (delta == 0.0) {
// degenerate case
var widen = max == 0 ? 1 : 0.01;
if (opts.min == null)
min -= widen;
// always widen max if we couldn't widen min to ensure we
// don't fall into min == max which doesn't work
if (opts.max == null || opts.min != null)
max += widen;
}
else {
// consider autoscaling
var margin = opts.autoscaleMargin;
if (margin != null) {
if (opts.min == null) {
min -= delta * margin;
// make sure we don't go below zero if all values
// are positive
if (min < 0 && axis.datamin != null && axis.datamin >= 0)
min = 0;
}
if (opts.max == null) {
max += delta * margin;
if (max > 0 && axis.datamax != null && axis.datamax <= 0)
max = 0;
}
}
}
axis.min = min;
axis.max = max;
}
function setupTickGeneration(axis) {
var opts = axis.options;
// estimate number of ticks
var noTicks;
if (typeof opts.ticks == "number" && opts.ticks > 0)
noTicks = opts.ticks;
else
// heuristic based on the model a*sqrt(x) fitted to
// some data points that seemed reasonable
noTicks = 0.3 * Math.sqrt(axis.direction == "x" ? surface.width : surface.height);
var delta = (axis.max - axis.min) / noTicks,
dec = -Math.floor(Math.log(delta) / Math.LN10),
maxDec = opts.tickDecimals;
if (maxDec != null && dec > maxDec) {
dec = maxDec;
}
var magn = Math.pow(10, -dec),
norm = delta / magn, // norm is between 1.0 and 10.0
size;
if (norm < 1.5) {
size = 1;
} else if (norm < 3) {
size = 2;
// special case for 2.5, requires an extra decimal
if (norm > 2.25 && (maxDec == null || dec + 1 <= maxDec)) {
size = 2.5;
++dec;
}
} else if (norm < 7.5) {
size = 5;
} else {
size = 10;
}
size *= magn;
if (opts.minTickSize != null && size < opts.minTickSize) {
size = opts.minTickSize;
}
axis.delta = delta;
axis.tickDecimals = Math.max(0, maxDec != null ? maxDec : dec);
axis.tickSize = opts.tickSize || size;
// Time mode was moved to a plug-in in 0.8, and since so many people use it
// we'll add an especially friendly reminder to make sure they included it.
if (opts.mode == "time" && !axis.tickGenerator) {
throw new Error("Time mode requires the flot.time plugin.");
}
// Flot supports base-10 axes; any other mode else is handled by a plug-in,
// like flot.time.js.
if (!axis.tickGenerator) {
axis.tickGenerator = function (axis) {
var ticks = [],
start = floorInBase(axis.min, axis.tickSize),
i = 0,
v = Number.NaN,
prev;
do {
prev = v;
v = start + i * axis.tickSize;
ticks.push(v);
++i;
} while (v < axis.max && v != prev);
return ticks;
};
axis.tickFormatter = function (value, axis) {
var factor = axis.tickDecimals ? Math.pow(10, axis.tickDecimals) : 1;
var formatted = "" + Math.round(value * factor) / factor;
// If tickDecimals was specified, ensure that we have exactly that
// much precision; otherwise default to the value's own precision.
if (axis.tickDecimals != null) {
var decimal = formatted.indexOf(".");
var precision = decimal == -1 ? 0 : formatted.length - decimal - 1;
if (precision < axis.tickDecimals) {
return (precision ? formatted : formatted + ".") + ("" + factor).substr(1, axis.tickDecimals - precision);
}
}
return formatted;
};
}
if ($.isFunction(opts.tickFormatter))
axis.tickFormatter = function (v, axis) { return "" + opts.tickFormatter(v, axis); };
if (opts.alignTicksWithAxis != null) {
var otherAxis = (axis.direction == "x" ? xaxes : yaxes)[opts.alignTicksWithAxis - 1];
if (otherAxis && otherAxis.used && otherAxis != axis) {
// consider snapping min/max to outermost nice ticks
var niceTicks = axis.tickGenerator(axis);
if (niceTicks.length > 0) {
if (opts.min == null)
axis.min = Math.min(axis.min, niceTicks[0]);
if (opts.max == null && niceTicks.length > 1)
axis.max = Math.max(axis.max, niceTicks[niceTicks.length - 1]);
}
axis.tickGenerator = function (axis) {
// copy ticks, scaled to this axis
var ticks = [], v, i;
for (i = 0; i < otherAxis.ticks.length; ++i) {
v = (otherAxis.ticks[i].v - otherAxis.min) / (otherAxis.max - otherAxis.min);
v = axis.min + v * (axis.max - axis.min);
ticks.push(v);
}
return ticks;
};
// we might need an extra decimal since forced
// ticks don't necessarily fit naturally
if (!axis.mode && opts.tickDecimals == null) {
var extraDec = Math.max(0, -Math.floor(Math.log(axis.delta) / Math.LN10) + 1),
ts = axis.tickGenerator(axis);
// only proceed if the tick interval rounded
// with an extra decimal doesn't give us a
// zero at end
if (!(ts.length > 1 && /\..*0$/.test((ts[1] - ts[0]).toFixed(extraDec))))
axis.tickDecimals = extraDec;
}
}
}
}
function setTicks(axis) {
var oticks = axis.options.ticks, ticks = [];
if (oticks == null || (typeof oticks == "number" && oticks > 0))
ticks = axis.tickGenerator(axis);
else if (oticks) {
if ($.isFunction(oticks))
// generate the ticks
ticks = oticks(axis);
else
ticks = oticks;
}
// clean up/labelify the supplied ticks, copy them over
var i, v;
axis.ticks = [];
for (i = 0; i < ticks.length; ++i) {
var label = null;
var t = ticks[i];
if (typeof t == "object") {
v = +t[0];
if (t.length > 1)
label = t[1];
}
else
v = +t;
if (label == null)
label = axis.tickFormatter(v, axis);
if (!isNaN(v))
axis.ticks.push({ v: v, label: label });
}
}
function snapRangeToTicks(axis, ticks) {
if (axis.options.autoscaleMargin && ticks.length > 0) {
// snap to ticks
if (axis.options.min == null)
axis.min = Math.min(axis.min, ticks[0].v);
if (axis.options.max == null && ticks.length > 1)
axis.max = Math.max(axis.max, ticks[ticks.length - 1].v);
}
}
function draw() {
surface.clear();
executeHooks(hooks.drawBackground, [ctx]);
var grid = options.grid;
// draw background, if any
if (grid.show && grid.backgroundColor)
drawBackground();
if (grid.show && !grid.aboveData) {
drawGrid();
}
for (var i = 0; i < series.length; ++i) {
executeHooks(hooks.drawSeries, [ctx, series[i]]);
drawSeries(series[i]);
}
executeHooks(hooks.draw, [ctx]);
if (grid.show && grid.aboveData) {
drawGrid();
}
surface.render();
// A draw implies that either the axes or data have changed, so we
// should probably update the overlay highlights as well.
triggerRedrawOverlay();
}
function extractRange(ranges, coord) {
var axis, from, to, key, axes = allAxes();
for (var i = 0; i < axes.length; ++i) {
axis = axes[i];
if (axis.direction == coord) {
key = coord + axis.n + "axis";
if (!ranges[key] && axis.n == 1)
key = coord + "axis"; // support x1axis as xaxis
if (ranges[key]) {
from = ranges[key].from;
to = ranges[key].to;
break;
}
}
}
// backwards-compat stuff - to be removed in future
if (!ranges[key]) {
axis = coord == "x" ? xaxes[0] : yaxes[0];
from = ranges[coord + "1"];
to = ranges[coord + "2"];
}
// auto-reverse as an added bonus
if (from != null && to != null && from > to) {
var tmp = from;
from = to;
to = tmp;
}
return { from: from, to: to, axis: axis };
}
function drawBackground() {
ctx.save();
ctx.translate(plotOffset.left, plotOffset.top);
ctx.fillStyle = getColorOrGradient(options.grid.backgroundColor, plotHeight, 0, "rgba(255, 255, 255, 0)");
ctx.fillRect(0, 0, plotWidth, plotHeight);
ctx.restore();
}
function drawGrid() {
var i, axes, bw, bc;
ctx.save();
ctx.translate(plotOffset.left, plotOffset.top);
// draw markings
var markings = options.grid.markings;
if (markings) {
if ($.isFunction(markings)) {
axes = plot.getAxes();
// xmin etc. is backwards compatibility, to be
// removed in the future
axes.xmin = axes.xaxis.min;
axes.xmax = axes.xaxis.max;
axes.ymin = axes.yaxis.min;
axes.ymax = axes.yaxis.max;
markings = markings(axes);
}
for (i = 0; i < markings.length; ++i) {
var m = markings[i],
xrange = extractRange(m, "x"),
yrange = extractRange(m, "y");
// fill in missing
if (xrange.from == null)
xrange.from = xrange.axis.min;
if (xrange.to == null)
xrange.to = xrange.axis.max;
if (yrange.from == null)
yrange.from = yrange.axis.min;
if (yrange.to == null)
yrange.to = yrange.axis.max;
// clip
if (xrange.to < xrange.axis.min || xrange.from > xrange.axis.max ||
yrange.to < yrange.axis.min || yrange.from > yrange.axis.max)
continue;
xrange.from = Math.max(xrange.from, xrange.axis.min);
xrange.to = Math.min(xrange.to, xrange.axis.max);
yrange.from = Math.max(yrange.from, yrange.axis.min);
yrange.to = Math.min(yrange.to, yrange.axis.max);
var xequal = xrange.from === xrange.to,
yequal = yrange.from === yrange.to;
if (xequal && yequal) {
continue;
}
// then draw
xrange.from = Math.floor(xrange.axis.p2c(xrange.from));
xrange.to = Math.floor(xrange.axis.p2c(xrange.to));
yrange.from = Math.floor(yrange.axis.p2c(yrange.from));
yrange.to = Math.floor(yrange.axis.p2c(yrange.to));
if (xequal || yequal) {
var lineWidth = m.lineWidth || options.grid.markingsLineWidth,
subPixel = lineWidth % 2 ? 0.5 : 0;
ctx.beginPath();
ctx.strokeStyle = m.color || options.grid.markingsColor;
ctx.lineWidth = lineWidth;
if (xequal) {
ctx.moveTo(xrange.to + subPixel, yrange.from);
ctx.lineTo(xrange.to + subPixel, yrange.to);
} else {
ctx.moveTo(xrange.from, yrange.to + subPixel);
ctx.lineTo(xrange.to, yrange.to + subPixel);
}
ctx.stroke();
} else {
ctx.fillStyle = m.color || options.grid.markingsColor;
ctx.fillRect(xrange.from, yrange.to,
xrange.to - xrange.from,
yrange.from - yrange.to);
}
}
}
// draw the ticks
axes = allAxes();
bw = options.grid.borderWidth;
for (var j = 0; j < axes.length; ++j) {
var axis = axes[j], box = axis.box,
t = axis.tickLength, x, y, xoff, yoff;
if (!axis.show || axis.ticks.length == 0)
continue;
ctx.lineWidth = 1;
// find the edges
if (axis.direction == "x") {
x = 0;
if (t == "full")
y = (axis.position == "top" ? 0 : plotHeight);
else
y = box.top - plotOffset.top + (axis.position == "top" ? box.height : 0);
}
else {
y = 0;
if (t == "full")
x = (axis.position == "left" ? 0 : plotWidth);
else
x = box.left - plotOffset.left + (axis.position == "left" ? box.width : 0);
}
// draw tick bar
if (!axis.innermost) {
ctx.strokeStyle = axis.options.color;
ctx.beginPath();
xoff = yoff = 0;
if (axis.direction == "x")
xoff = plotWidth + 1;
else
yoff = plotHeight + 1;
if (ctx.lineWidth == 1) {
if (axis.direction == "x") {
y = Math.floor(y) + 0.5;
} else {
x = Math.floor(x) + 0.5;
}
}
ctx.moveTo(x, y);
ctx.lineTo(x + xoff, y + yoff);
ctx.stroke();
}
// draw ticks
ctx.strokeStyle = axis.options.tickColor;
ctx.beginPath();
for (i = 0; i < axis.ticks.length; ++i) {
var v = axis.ticks[i].v;
xoff = yoff = 0;
if (isNaN(v) || v < axis.min || v > axis.max
// skip those lying on the axes if we got a border
|| (t == "full"
&& ((typeof bw == "object" && bw[axis.position] > 0) || bw > 0)
&& (v == axis.min || v == axis.max)))
continue;
if (axis.direction == "x") {
x = axis.p2c(v);
yoff = t == "full" ? -plotHeight : t;
if (axis.position == "top")
yoff = -yoff;
}
else {
y = axis.p2c(v);
xoff = t == "full" ? -plotWidth : t;
if (axis.position == "left")
xoff = -xoff;
}
if (ctx.lineWidth == 1) {
if (axis.direction == "x")
x = Math.floor(x) + 0.5;
else
y = Math.floor(y) + 0.5;
}
ctx.moveTo(x, y);
ctx.lineTo(x + xoff, y + yoff);
}
ctx.stroke();
}
// draw border
if (bw) {
// If either borderWidth or borderColor is an object, then draw the border
// line by line instead of as one rectangle
bc = options.grid.borderColor;
if(typeof bw == "object" || typeof bc == "object") {
if (typeof bw !== "object") {
bw = {top: bw, right: bw, bottom: bw, left: bw};
}
if (typeof bc !== "object") {
bc = {top: bc, right: bc, bottom: bc, left: bc};
}
if (bw.top > 0) {
ctx.strokeStyle = bc.top;
ctx.lineWidth = bw.top;
ctx.beginPath();
ctx.moveTo(0 - bw.left, 0 - bw.top/2);
ctx.lineTo(plotWidth, 0 - bw.top/2);
ctx.stroke();
}
if (bw.right > 0) {
ctx.strokeStyle = bc.right;
ctx.lineWidth = bw.right;
ctx.beginPath();
ctx.moveTo(plotWidth + bw.right / 2, 0 - bw.top);
ctx.lineTo(plotWidth + bw.right / 2, plotHeight);
ctx.stroke();
}
if (bw.bottom > 0) {
ctx.strokeStyle = bc.bottom;
ctx.lineWidth = bw.bottom;
ctx.beginPath();
ctx.moveTo(plotWidth + bw.right, plotHeight + bw.bottom / 2);
ctx.lineTo(0, plotHeight + bw.bottom / 2);
ctx.stroke();
}
if (bw.left > 0) {
ctx.strokeStyle = bc.left;
ctx.lineWidth = bw.left;
ctx.beginPath();
ctx.moveTo(0 - bw.left/2, plotHeight + bw.bottom);
ctx.lineTo(0- bw.left/2, 0);
ctx.stroke();
}
}
else {
ctx.lineWidth = bw;
ctx.strokeStyle = options.grid.borderColor;
ctx.strokeRect(-bw/2, -bw/2, plotWidth + bw, plotHeight + bw);
}
}
ctx.restore();
}
function drawAxisLabels() {
$.each(allAxes(), function (_, axis) {
var box = axis.box,
legacyStyles = axis.direction + "Axis " + axis.direction + axis.n + "Axis",
layer = "flot-" + axis.direction + "-axis flot-" + axis.direction + axis.n + "-axis " + legacyStyles,
font = axis.options.font || "flot-tick-label tickLabel",
tick, x, y, halign, valign;
// Remove text before checking for axis.show and ticks.length;
// otherwise plugins, like flot-tickrotor, that draw their own
// tick labels will end up with both theirs and the defaults.
surface.removeText(layer);
if (!axis.show || axis.ticks.length == 0)
return;
for (var i = 0; i < axis.ticks.length; ++i) {
tick = axis.ticks[i];
if (!tick.label || tick.v < axis.min || tick.v > axis.max)
continue;
if (axis.direction == "x") {
halign = "center";
x = plotOffset.left + axis.p2c(tick.v);
if (axis.position == "bottom") {
y = box.top + box.padding;
} else {
y = box.top + box.height - box.padding;
valign = "bottom";
}
} else {
valign = "middle";
y = plotOffset.top + axis.p2c(tick.v);
if (axis.position == "left") {
x = box.left + box.width - box.padding;
halign = "right";
} else {
x = box.left + box.padding;
}
}
surface.addText(layer, x, y, tick.label, font, null, null, halign, valign);
}
});
}
function drawSeries(series) {
if (series.lines.show)
drawSeriesLines(series);
if (series.bars.show)
drawSeriesBars(series);
if (series.points.show)
drawSeriesPoints(series);
}
function drawSeriesLines(series) {
function plotLine(datapoints, xoffset, yoffset, axisx, axisy) {
var points = datapoints.points,
ps = datapoints.pointsize,
prevx = null, prevy = null;
ctx.beginPath();
for (var i = ps; i < points.length; i += ps) {
var x1 = points[i - ps], y1 = points[i - ps + 1],
x2 = points[i], y2 = points[i + 1];
if (x1 == null || x2 == null)
continue;
// clip with ymin
if (y1 <= y2 && y1 < axisy.min) {
if (y2 < axisy.min)
continue; // line segment is outside
// compute new intersection point
x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
y1 = axisy.min;
}
else if (y2 <= y1 && y2 < axisy.min) {
if (y1 < axisy.min)
continue;
x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
y2 = axisy.min;
}
// clip with ymax
if (y1 >= y2 && y1 > axisy.max) {
if (y2 > axisy.max)
continue;
x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
y1 = axisy.max;
}
else if (y2 >= y1 && y2 > axisy.max) {
if (y1 > axisy.max)
continue;
x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
y2 = axisy.max;
}
// clip with xmin
if (x1 <= x2 && x1 < axisx.min) {
if (x2 < axisx.min)
continue;
y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
x1 = axisx.min;
}
else if (x2 <= x1 && x2 < axisx.min) {
if (x1 < axisx.min)
continue;
y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
x2 = axisx.min;
}
// clip with xmax
if (x1 >= x2 && x1 > axisx.max) {
if (x2 > axisx.max)
continue;
y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
x1 = axisx.max;
}
else if (x2 >= x1 && x2 > axisx.max) {
if (x1 > axisx.max)
continue;
y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
x2 = axisx.max;
}
if (x1 != prevx || y1 != prevy)
ctx.moveTo(axisx.p2c(x1) + xoffset, axisy.p2c(y1) + yoffset);
prevx = x2;
prevy = y2;
ctx.lineTo(axisx.p2c(x2) + xoffset, axisy.p2c(y2) + yoffset);
}
ctx.stroke();
}
function plotLineArea(datapoints, axisx, axisy) {
var points = datapoints.points,
ps = datapoints.pointsize,
bottom = Math.min(Math.max(0, axisy.min), axisy.max),
i = 0, top, areaOpen = false,
ypos = 1, segmentStart = 0, segmentEnd = 0;
// we process each segment in two turns, first forward
// direction to sketch out top, then once we hit the
// end we go backwards to sketch the bottom
while (true) {
if (ps > 0 && i > points.length + ps)
break;
i += ps; // ps is negative if going backwards
var x1 = points[i - ps],
y1 = points[i - ps + ypos],
x2 = points[i], y2 = points[i + ypos];
if (areaOpen) {
if (ps > 0 && x1 != null && x2 == null) {
// at turning point
segmentEnd = i;
ps = -ps;
ypos = 2;
continue;
}
if (ps < 0 && i == segmentStart + ps) {
// done with the reverse sweep
ctx.fill();
areaOpen = false;
ps = -ps;
ypos = 1;
i = segmentStart = segmentEnd + ps;
continue;
}
}
if (x1 == null || x2 == null)
continue;
// clip x values
// clip with xmin
if (x1 <= x2 && x1 < axisx.min) {
if (x2 < axisx.min)
continue;
y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
x1 = axisx.min;
}
else if (x2 <= x1 && x2 < axisx.min) {
if (x1 < axisx.min)
continue;
y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
x2 = axisx.min;
}
// clip with xmax
if (x1 >= x2 && x1 > axisx.max) {
if (x2 > axisx.max)
continue;
y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
x1 = axisx.max;
}
else if (x2 >= x1 && x2 > axisx.max) {
if (x1 > axisx.max)
continue;
y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
x2 = axisx.max;
}
if (!areaOpen) {
// open area
ctx.beginPath();
ctx.moveTo(axisx.p2c(x1), axisy.p2c(bottom));
areaOpen = true;
}
// now first check the case where both is outside
if (y1 >= axisy.max && y2 >= axisy.max) {
ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.max));
ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.max));
continue;
}
else if (y1 <= axisy.min && y2 <= axisy.min) {
ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.min));
ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.min));
continue;
}
// else it's a bit more complicated, there might
// be a flat maxed out rectangle first, then a
// triangular cutout or reverse; to find these
// keep track of the current x values
var x1old = x1, x2old = x2;
// clip the y values, without shortcutting, we
// go through all cases in turn
// clip with ymin
if (y1 <= y2 && y1 < axisy.min && y2 >= axisy.min) {
x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
y1 = axisy.min;
}
else if (y2 <= y1 && y2 < axisy.min && y1 >= axisy.min) {
x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
y2 = axisy.min;
}
// clip with ymax
if (y1 >= y2 && y1 > axisy.max && y2 <= axisy.max) {
x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
y1 = axisy.max;
}
else if (y2 >= y1 && y2 > axisy.max && y1 <= axisy.max) {
x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
y2 = axisy.max;
}
// if the x value was changed we got a rectangle
// to fill
if (x1 != x1old) {
ctx.lineTo(axisx.p2c(x1old), axisy.p2c(y1));
// it goes to (x1, y1), but we fill that below
}
// fill triangular section, this sometimes result
// in redundant points if (x1, y1) hasn't changed
// from previous line to, but we just ignore that
ctx.lineTo(axisx.p2c(x1), axisy.p2c(y1));
ctx.lineTo(axisx.p2c(x2), axisy.p2c(y2));
// fill the other rectangle if it's there
if (x2 != x2old) {
ctx.lineTo(axisx.p2c(x2), axisy.p2c(y2));
ctx.lineTo(axisx.p2c(x2old), axisy.p2c(y2));
}
}
}
ctx.save();
ctx.translate(plotOffset.left, plotOffset.top);
ctx.lineJoin = "round";
var lw = series.lines.lineWidth,
sw = series.shadowSize;
// FIXME: consider another form of shadow when filling is turned on
if (lw > 0 && sw > 0) {
// draw shadow as a thick and thin line with transparency
ctx.lineWidth = sw;
ctx.strokeStyle = "rgba(0,0,0,0.1)";
// position shadow at angle from the mid of line
var angle = Math.PI/18;
plotLine(series.datapoints, Math.sin(angle) * (lw/2 + sw/2), Math.cos(angle) * (lw/2 + sw/2), series.xaxis, series.yaxis);
ctx.lineWidth = sw/2;
plotLine(series.datapoints, Math.sin(angle) * (lw/2 + sw/4), Math.cos(angle) * (lw/2 + sw/4), series.xaxis, series.yaxis);
}
ctx.lineWidth = lw;
ctx.strokeStyle = series.color;
var fillStyle = getFillStyle(series.lines, series.color, 0, plotHeight);
if (fillStyle) {
ctx.fillStyle = fillStyle;
plotLineArea(series.datapoints, series.xaxis, series.yaxis);
}
if (lw > 0)
plotLine(series.datapoints, 0, 0, series.xaxis, series.yaxis);
ctx.restore();
}
function drawSeriesPoints(series) {
function plotPoints(datapoints, radius, fillStyle, offset, shadow, axisx, axisy, symbol) {
var points = datapoints.points, ps = datapoints.pointsize;
for (var i = 0; i < points.length; i += ps) {
var x = points[i], y = points[i + 1];
if (x == null || x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max)
continue;
ctx.beginPath();
x = axisx.p2c(x);
y = axisy.p2c(y) + offset;
if (symbol == "circle")
ctx.arc(x, y, radius, 0, shadow ? Math.PI : Math.PI * 2, false);
else
symbol(ctx, x, y, radius, shadow);
ctx.closePath();
if (fillStyle) {
ctx.fillStyle = fillStyle;
ctx.fill();
}
ctx.stroke();
}
}
ctx.save();
ctx.translate(plotOffset.left, plotOffset.top);
var lw = series.points.lineWidth,
sw = series.shadowSize,
radius = series.points.radius,
symbol = series.points.symbol;
// If the user sets the line width to 0, we change it to a very
// small value. A line width of 0 seems to force the default of 1.
// Doing the conditional here allows the shadow setting to still be
// optional even with a lineWidth of 0.
if( lw == 0 )
lw = 0.0001;
if (lw > 0 && sw > 0) {
// draw shadow in two steps
var w = sw / 2;
ctx.lineWidth = w;
ctx.strokeStyle = "rgba(0,0,0,0.1)";
plotPoints(series.datapoints, radius, null, w + w/2, true,
series.xaxis, series.yaxis, symbol);
ctx.strokeStyle = "rgba(0,0,0,0.2)";
plotPoints(series.datapoints, radius, null, w/2, true,
series.xaxis, series.yaxis, symbol);
}
ctx.lineWidth = lw;
ctx.strokeStyle = series.color;
plotPoints(series.datapoints, radius,
getFillStyle(series.points, series.color), 0, false,
series.xaxis, series.yaxis, symbol);
ctx.restore();
}
function drawBar(x, y, b, barLeft, barRight, fillStyleCallback, axisx, axisy, c, horizontal, lineWidth) {
var left, right, bottom, top,
drawLeft, drawRight, drawTop, drawBottom,
tmp;
// in horizontal mode, we start the bar from the left
// instead of from the bottom so it appears to be
// horizontal rather than vertical
if (horizontal) {
drawBottom = drawRight = drawTop = true;
drawLeft = false;
left = b;
right = x;
top = y + barLeft;
bottom = y + barRight;
// account for negative bars
if (right < left) {
tmp = right;
right = left;
left = tmp;
drawLeft = true;
drawRight = false;
}
}
else {
drawLeft = drawRight = drawTop = true;
drawBottom = false;
left = x + barLeft;
right = x + barRight;
bottom = b;
top = y;
// account for negative bars
if (top < bottom) {
tmp = top;
top = bottom;
bottom = tmp;
drawBottom = true;
drawTop = false;
}
}
// clip
if (right < axisx.min || left > axisx.max ||
top < axisy.min || bottom > axisy.max)
return;
if (left < axisx.min) {
left = axisx.min;
drawLeft = false;
}
if (right > axisx.max) {
right = axisx.max;
drawRight = false;
}
if (bottom < axisy.min) {
bottom = axisy.min;
drawBottom = false;
}
if (top > axisy.max) {
top = axisy.max;
drawTop = false;
}
left = axisx.p2c(left);
bottom = axisy.p2c(bottom);
right = axisx.p2c(right);
top = axisy.p2c(top);
// fill the bar
if (fillStyleCallback) {
c.fillStyle = fillStyleCallback(bottom, top);
c.fillRect(left, top, right - left, bottom - top)
}
// draw outline
if (lineWidth > 0 && (drawLeft || drawRight || drawTop || drawBottom)) {
c.beginPath();
// FIXME: inline moveTo is buggy with excanvas
c.moveTo(left, bottom);
if (drawLeft)
c.lineTo(left, top);
else
c.moveTo(left, top);
if (drawTop)
c.lineTo(right, top);
else
c.moveTo(right, top);
if (drawRight)
c.lineTo(right, bottom);
else
c.moveTo(right, bottom);
if (drawBottom)
c.lineTo(left, bottom);
else
c.moveTo(left, bottom);
c.stroke();
}
}
function drawSeriesBars(series) {
function plotBars(datapoints, barLeft, barRight, fillStyleCallback, axisx, axisy) {
var points = datapoints.points, ps = datapoints.pointsize;
for (var i = 0; i < points.length; i += ps) {
if (points[i] == null)
continue;
drawBar(points[i], points[i + 1], points[i + 2], barLeft, barRight, fillStyleCallback, axisx, axisy, ctx, series.bars.horizontal, series.bars.lineWidth);
}
}
ctx.save();
ctx.translate(plotOffset.left, plotOffset.top);
// FIXME: figure out a way to add shadows (for instance along the right edge)
ctx.lineWidth = series.bars.lineWidth;
ctx.strokeStyle = series.color;
var barLeft;
switch (series.bars.align) {
case "left":
barLeft = 0;
break;
case "right":
barLeft = -series.bars.barWidth;
break;
default:
barLeft = -series.bars.barWidth / 2;
}
var fillStyleCallback = series.bars.fill ? function (bottom, top) { return getFillStyle(series.bars, series.color, bottom, top); } : null;
plotBars(series.datapoints, barLeft, barLeft + series.bars.barWidth, fillStyleCallback, series.xaxis, series.yaxis);
ctx.restore();
}
function getFillStyle(filloptions, seriesColor, bottom, top) {
var fill = filloptions.fill;
if (!fill)
return null;
if (filloptions.fillColor)
return getColorOrGradient(filloptions.fillColor, bottom, top, seriesColor);
var c = $.color.parse(seriesColor);
c.a = typeof fill == "number" ? fill : 0.4;
c.normalize();
return c.toString();
}
function insertLegend() {
if (options.legend.container != null) {
$(options.legend.container).html("");
} else {
placeholder.find(".legend").remove();
}
if (!options.legend.show) {
return;
}
var fragments = [], entries = [], rowStarted = false,
lf = options.legend.labelFormatter, s, label;
// Build a list of legend entries, with each having a label and a color
for (var i = 0; i < series.length; ++i) {
s = series[i];
if (s.label) {
label = lf ? lf(s.label, s) : s.label;
if (label) {
entries.push({
label: label,
color: s.color
});
}
}
}
// Sort the legend using either the default or a custom comparator
if (options.legend.sorted) {
if ($.isFunction(options.legend.sorted)) {
entries.sort(options.legend.sorted);
} else if (options.legend.sorted == "reverse") {
entries.reverse();
} else {
var ascending = options.legend.sorted != "descending";
entries.sort(function(a, b) {
return a.label == b.label ? 0 : (
(a.label < b.label) != ascending ? 1 : -1 // Logical XOR
);
});
}
}
// Generate markup for the list of entries, in their final order
for (var i = 0; i < entries.length; ++i) {
var entry = entries[i];
if (i % options.legend.noColumns == 0) {
if (rowStarted)
fragments.push('</tr>');
fragments.push('<tr>');
rowStarted = true;
}
fragments.push(
'<td class="legendColorBox"><div style="border:1px solid ' + options.legend.labelBoxBorderColor + ';padding:1px"><div style="width:4px;height:0;border:5px solid ' + entry.color + ';overflow:hidden"></div></div></td>' +
'<td class="legendLabel">' + entry.label + '</td>'
);
}
if (rowStarted)
fragments.push('</tr>');
if (fragments.length == 0)
return;
var table = '<table style="font-size:smaller;color:' + options.grid.color + '">' + fragments.join("") + '</table>';
if (options.legend.container != null)
$(options.legend.container).html(table);
else {
var pos = "",
p = options.legend.position,
m = options.legend.margin;
if (m[0] == null)
m = [m, m];
if (p.charAt(0) == "n")
pos += 'top:' + (m[1] + plotOffset.top) + 'px;';
else if (p.charAt(0) == "s")
pos += 'bottom:' + (m[1] + plotOffset.bottom) + 'px;';
if (p.charAt(1) == "e")
pos += 'right:' + (m[0] + plotOffset.right) + 'px;';
else if (p.charAt(1) == "w")
pos += 'left:' + (m[0] + plotOffset.left) + 'px;';
var legend = $('<div class="legend">' + table.replace('style="', 'style="position:absolute;' + pos +';') + '</div>').appendTo(placeholder);
if (options.legend.backgroundOpacity != 0.0) {
// put in the transparent background
// separately to avoid blended labels and
// label boxes
var c = options.legend.backgroundColor;
if (c == null) {
c = options.grid.backgroundColor;
if (c && typeof c == "string")
c = $.color.parse(c);
else
c = $.color.extract(legend, 'background-color');
c.a = 1;
c = c.toString();
}
var div = legend.children();
$('<div style="position:absolute;width:' + div.width() + 'px;height:' + div.height() + 'px;' + pos +'background-color:' + c + ';"> </div>').prependTo(legend).css('opacity', options.legend.backgroundOpacity);
}
}
}
// interactive features
var highlights = [],
redrawTimeout = null;
// returns the data item the mouse is over, or null if none is found
function findNearbyItem(mouseX, mouseY, seriesFilter) {
var maxDistance = options.grid.mouseActiveRadius,
smallestDistance = maxDistance * maxDistance + 1,
item = null, foundPoint = false, i, j, ps;
for (i = series.length - 1; i >= 0; --i) {
if (!seriesFilter(series[i]))
continue;
var s = series[i],
axisx = s.xaxis,
axisy = s.yaxis,
points = s.datapoints.points,
mx = axisx.c2p(mouseX), // precompute some stuff to make the loop faster
my = axisy.c2p(mouseY),
maxx = maxDistance / axisx.scale,
maxy = maxDistance / axisy.scale;
ps = s.datapoints.pointsize;
// with inverse transforms, we can't use the maxx/maxy
// optimization, sadly
if (axisx.options.inverseTransform)
maxx = Number.MAX_VALUE;
if (axisy.options.inverseTransform)
maxy = Number.MAX_VALUE;
if (s.lines.show || s.points.show) {
for (j = 0; j < points.length; j += ps) {
var x = points[j], y = points[j + 1];
if (x == null)
continue;
// For points and lines, the cursor must be within a
// certain distance to the data point
if (x - mx > maxx || x - mx < -maxx ||
y - my > maxy || y - my < -maxy)
continue;
// We have to calculate distances in pixels, not in
// data units, because the scales of the axes may be different
var dx = Math.abs(axisx.p2c(x) - mouseX),
dy = Math.abs(axisy.p2c(y) - mouseY),
dist = dx * dx + dy * dy; // we save the sqrt
// use <= to ensure last point takes precedence
// (last generally means on top of)
if (dist < smallestDistance) {
smallestDistance = dist;
item = [i, j / ps];
}
}
}
if (s.bars.show && !item) { // no other point can be nearby
var barLeft, barRight;
switch (s.bars.align) {
case "left":
barLeft = 0;
break;
case "right":
barLeft = -s.bars.barWidth;
break;
default:
barLeft = -s.bars.barWidth / 2;
}
barRight = barLeft + s.bars.barWidth;
for (j = 0; j < points.length; j += ps) {
var x = points[j], y = points[j + 1], b = points[j + 2];
if (x == null)
continue;
// for a bar graph, the cursor must be inside the bar
if (series[i].bars.horizontal ?
(mx <= Math.max(b, x) && mx >= Math.min(b, x) &&
my >= y + barLeft && my <= y + barRight) :
(mx >= x + barLeft && mx <= x + barRight &&
my >= Math.min(b, y) && my <= Math.max(b, y)))
item = [i, j / ps];
}
}
}
if (item) {
i = item[0];
j = item[1];
ps = series[i].datapoints.pointsize;
return { datapoint: series[i].datapoints.points.slice(j * ps, (j + 1) * ps),
dataIndex: j,
series: series[i],
seriesIndex: i };
}
return null;
}
function onMouseMove(e) {
if (options.grid.hoverable)
triggerClickHoverEvent("plothover", e,
function (s) { return s["hoverable"] != false; });
}
function onMouseLeave(e) {
if (options.grid.hoverable)
triggerClickHoverEvent("plothover", e,
function (s) { return false; });
}
function onClick(e) {
triggerClickHoverEvent("plotclick", e,
function (s) { return s["clickable"] != false; });
}
// trigger click or hover event (they send the same parameters
// so we share their code)
function triggerClickHoverEvent(eventname, event, seriesFilter) {
var offset = eventHolder.offset(),
canvasX = event.pageX - offset.left - plotOffset.left,
canvasY = event.pageY - offset.top - plotOffset.top,
pos = canvasToAxisCoords({ left: canvasX, top: canvasY });
pos.pageX = event.pageX;
pos.pageY = event.pageY;
var item = findNearbyItem(canvasX, canvasY, seriesFilter);
if (item) {
// fill in mouse pos for any listeners out there
item.pageX = parseInt(item.series.xaxis.p2c(item.datapoint[0]) + offset.left + plotOffset.left, 10);
item.pageY = parseInt(item.series.yaxis.p2c(item.datapoint[1]) + offset.top + plotOffset.top, 10);
}
if (options.grid.autoHighlight) {
// clear auto-highlights
for (var i = 0; i < highlights.length; ++i) {
var h = highlights[i];
if (h.auto == eventname &&
!(item && h.series == item.series &&
h.point[0] == item.datapoint[0] &&
h.point[1] == item.datapoint[1]))
unhighlight(h.series, h.point);
}
if (item)
highlight(item.series, item.datapoint, eventname);
}
placeholder.trigger(eventname, [ pos, item ]);
}
function triggerRedrawOverlay() {
var t = options.interaction.redrawOverlayInterval;
if (t == -1) { // skip event queue
drawOverlay();
return;
}
if (!redrawTimeout)
redrawTimeout = setTimeout(drawOverlay, t);
}
function drawOverlay() {
redrawTimeout = null;
// draw highlights
octx.save();
overlay.clear();
octx.translate(plotOffset.left, plotOffset.top);
var i, hi;
for (i = 0; i < highlights.length; ++i) {
hi = highlights[i];
if (hi.series.bars.show)
drawBarHighlight(hi.series, hi.point);
else
drawPointHighlight(hi.series, hi.point);
}
octx.restore();
executeHooks(hooks.drawOverlay, [octx]);
}
function highlight(s, point, auto) {
if (typeof s == "number")
s = series[s];
if (typeof point == "number") {
var ps = s.datapoints.pointsize;
point = s.datapoints.points.slice(ps * point, ps * (point + 1));
}
var i = indexOfHighlight(s, point);
if (i == -1) {
highlights.push({ series: s, point: point, auto: auto });
triggerRedrawOverlay();
}
else if (!auto)
highlights[i].auto = false;
}
function unhighlight(s, point) {
if (s == null && point == null) {
highlights = [];
triggerRedrawOverlay();
return;
}
if (typeof s == "number")
s = series[s];
if (typeof point == "number") {
var ps = s.datapoints.pointsize;
point = s.datapoints.points.slice(ps * point, ps * (point + 1));
}
var i = indexOfHighlight(s, point);
if (i != -1) {
highlights.splice(i, 1);
triggerRedrawOverlay();
}
}
function indexOfHighlight(s, p) {
for (var i = 0; i < highlights.length; ++i) {
var h = highlights[i];
if (h.series == s && h.point[0] == p[0]
&& h.point[1] == p[1])
return i;
}
return -1;
}
function drawPointHighlight(series, point) {
var x = point[0], y = point[1],
axisx = series.xaxis, axisy = series.yaxis,
highlightColor = (typeof series.highlightColor === "string") ? series.highlightColor : $.color.parse(series.color).scale('a', 0.5).toString();
if (x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max)
return;
var pointRadius = series.points.radius + series.points.lineWidth / 2;
octx.lineWidth = pointRadius;
octx.strokeStyle = highlightColor;
var radius = 1.5 * pointRadius;
x = axisx.p2c(x);
y = axisy.p2c(y);
octx.beginPath();
if (series.points.symbol == "circle")
octx.arc(x, y, radius, 0, 2 * Math.PI, false);
else
series.points.symbol(octx, x, y, radius, false);
octx.closePath();
octx.stroke();
}
function drawBarHighlight(series, point) {
var highlightColor = (typeof series.highlightColor === "string") ? series.highlightColor : $.color.parse(series.color).scale('a', 0.5).toString(),
fillStyle = highlightColor,
barLeft;
switch (series.bars.align) {
case "left":
barLeft = 0;
break;
case "right":
barLeft = -series.bars.barWidth;
break;
default:
barLeft = -series.bars.barWidth / 2;
}
octx.lineWidth = series.bars.lineWidth;
octx.strokeStyle = highlightColor;
drawBar(point[0], point[1], point[2] || 0, barLeft, barLeft + series.bars.barWidth,
function () { return fillStyle; }, series.xaxis, series.yaxis, octx, series.bars.horizontal, series.bars.lineWidth);
}
function getColorOrGradient(spec, bottom, top, defaultColor) {
if (typeof spec == "string")
return spec;
else {
// assume this is a gradient spec; IE currently only
// supports a simple vertical gradient properly, so that's
// what we support too
var gradient = ctx.createLinearGradient(0, top, 0, bottom);
for (var i = 0, l = spec.colors.length; i < l; ++i) {
var c = spec.colors[i];
if (typeof c != "string") {
var co = $.color.parse(defaultColor);
if (c.brightness != null)
co = co.scale('rgb', c.brightness);
if (c.opacity != null)
co.a *= c.opacity;
c = co.toString();
}
gradient.addColorStop(i / (l - 1), c);
}
return gradient;
}
}
}
// Add the plot function to the top level of the jQuery object
$.plot = function(placeholder, data, options) {
//var t0 = new Date();
var plot = new Plot($(placeholder), data, options, $.plot.plugins);
//(window.console ? console.log : alert)("time used (msecs): " + ((new Date()).getTime() - t0.getTime()));
return plot;
};
$.plot.version = "0.8.3";
$.plot.plugins = [];
// Also add the plot function as a chainable property
$.fn.plot = function(data, options) {
return this.each(function() {
$.plot(this, data, options);
});
};
// round to nearby lower multiple of base
function floorInBase(n, base) {
return base * Math.floor(n / base);
}
})(jQuery);
/* Pretty handling of time axes.
Copyright (c) 2007-2014 IOLA and Ole Laursen.
Licensed under the MIT license.
Set axis.mode to "time" to enable. See the section "Time series data" in
API.txt for details.
*/
(function($) {
var options = {
xaxis: {
timezone: null, // "browser" for local to the client or timezone for timezone-js
timeformat: null, // format string to use
twelveHourClock: false, // 12 or 24 time in time mode
monthNames: null // list of names of months
}
};
// round to nearby lower multiple of base
function floorInBase(n, base) {
return base * Math.floor(n / base);
}
// Returns a string with the date d formatted according to fmt.
// A subset of the Open Group's strftime format is supported.
function formatDate(d, fmt, monthNames, dayNames) {
if (typeof d.strftime == "function") {
return d.strftime(fmt);
}
var leftPad = function(n, pad) {
n = "" + n;
pad = "" + (pad == null ? "0" : pad);
return n.length == 1 ? pad + n : n;
};
var r = [];
var escape = false;
var hours = d.getHours();
var isAM = hours < 12;
if (monthNames == null) {
monthNames = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
}
if (dayNames == null) {
dayNames = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];
}
var hours12;
if (hours > 12) {
hours12 = hours - 12;
} else if (hours == 0) {
hours12 = 12;
} else {
hours12 = hours;
}
for (var i = 0; i < fmt.length; ++i) {
var c = fmt.charAt(i);
if (escape) {
switch (c) {
case 'a': c = "" + dayNames[d.getDay()]; break;
case 'b': c = "" + monthNames[d.getMonth()]; break;
case 'd': c = leftPad(d.getDate()); break;
case 'e': c = leftPad(d.getDate(), " "); break;
case 'h': // For back-compat with 0.7; remove in 1.0
case 'H': c = leftPad(hours); break;
case 'I': c = leftPad(hours12); break;
case 'l': c = leftPad(hours12, " "); break;
case 'm': c = leftPad(d.getMonth() + 1); break;
case 'M': c = leftPad(d.getMinutes()); break;
// quarters not in Open Group's strftime specification
case 'q':
c = "" + (Math.floor(d.getMonth() / 3) + 1); break;
case 'S': c = leftPad(d.getSeconds()); break;
case 'y': c = leftPad(d.getFullYear() % 100); break;
case 'Y': c = "" + d.getFullYear(); break;
case 'p': c = (isAM) ? ("" + "am") : ("" + "pm"); break;
case 'P': c = (isAM) ? ("" + "AM") : ("" + "PM"); break;
case 'w': c = "" + d.getDay(); break;
}
r.push(c);
escape = false;
} else {
if (c == "%") {
escape = true;
} else {
r.push(c);
}
}
}
return r.join("");
}
// To have a consistent view of time-based data independent of which time
// zone the client happens to be in we need a date-like object independent
// of time zones. This is done through a wrapper that only calls the UTC
// versions of the accessor methods.
function makeUtcWrapper(d) {
function addProxyMethod(sourceObj, sourceMethod, targetObj, targetMethod) {
sourceObj[sourceMethod] = function() {
return targetObj[targetMethod].apply(targetObj, arguments);
};
};
var utc = {
date: d
};
// support strftime, if found
if (d.strftime != undefined) {
addProxyMethod(utc, "strftime", d, "strftime");
}
addProxyMethod(utc, "getTime", d, "getTime");
addProxyMethod(utc, "setTime", d, "setTime");
var props = ["Date", "Day", "FullYear", "Hours", "Milliseconds", "Minutes", "Month", "Seconds"];
for (var p = 0; p < props.length; p++) {
addProxyMethod(utc, "get" + props[p], d, "getUTC" + props[p]);
addProxyMethod(utc, "set" + props[p], d, "setUTC" + props[p]);
}
return utc;
};
// select time zone strategy. This returns a date-like object tied to the
// desired timezone
function dateGenerator(ts, opts) {
if (opts.timezone == "browser") {
return new Date(ts);
} else if (!opts.timezone || opts.timezone == "utc") {
return makeUtcWrapper(new Date(ts));
} else if (typeof timezoneJS != "undefined" && typeof timezoneJS.Date != "undefined") {
var d = new timezoneJS.Date();
// timezone-js is fickle, so be sure to set the time zone before
// setting the time.
d.setTimezone(opts.timezone);
d.setTime(ts);
return d;
} else {
return makeUtcWrapper(new Date(ts));
}
}
// map of app. size of time units in milliseconds
var timeUnitSize = {
"second": 1000,
"minute": 60 * 1000,
"hour": 60 * 60 * 1000,
"day": 24 * 60 * 60 * 1000,
"month": 30 * 24 * 60 * 60 * 1000,
"quarter": 3 * 30 * 24 * 60 * 60 * 1000,
"year": 365.2425 * 24 * 60 * 60 * 1000
};
// the allowed tick sizes, after 1 year we use
// an integer algorithm
var baseSpec = [
[1, "second"], [2, "second"], [5, "second"], [10, "second"],
[30, "second"],
[1, "minute"], [2, "minute"], [5, "minute"], [10, "minute"],
[30, "minute"],
[1, "hour"], [2, "hour"], [4, "hour"],
[8, "hour"], [12, "hour"],
[1, "day"], [2, "day"], [3, "day"],
[0.25, "month"], [0.5, "month"], [1, "month"],
[2, "month"]
];
// we don't know which variant(s) we'll need yet, but generating both is
// cheap
var specMonths = baseSpec.concat([[3, "month"], [6, "month"],
[1, "year"]]);
var specQuarters = baseSpec.concat([[1, "quarter"], [2, "quarter"],
[1, "year"]]);
function init(plot) {
plot.hooks.processOptions.push(function (plot, options) {
$.each(plot.getAxes(), function(axisName, axis) {
var opts = axis.options;
if (opts.mode == "time") {
axis.tickGenerator = function(axis) {
var ticks = [];
var d = dateGenerator(axis.min, opts);
var minSize = 0;
// make quarter use a possibility if quarters are
// mentioned in either of these options
var spec = (opts.tickSize && opts.tickSize[1] ===
"quarter") ||
(opts.minTickSize && opts.minTickSize[1] ===
"quarter") ? specQuarters : specMonths;
if (opts.minTickSize != null) {
if (typeof opts.tickSize == "number") {
minSize = opts.tickSize;
} else {
minSize = opts.minTickSize[0] * timeUnitSize[opts.minTickSize[1]];
}
}
for (var i = 0; i < spec.length - 1; ++i) {
if (axis.delta < (spec[i][0] * timeUnitSize[spec[i][1]]
+ spec[i + 1][0] * timeUnitSize[spec[i + 1][1]]) / 2
&& spec[i][0] * timeUnitSize[spec[i][1]] >= minSize) {
break;
}
}
var size = spec[i][0];
var unit = spec[i][1];
// special-case the possibility of several years
if (unit == "year") {
// if given a minTickSize in years, just use it,
// ensuring that it's an integer
if (opts.minTickSize != null && opts.minTickSize[1] == "year") {
size = Math.floor(opts.minTickSize[0]);
} else {
var magn = Math.pow(10, Math.floor(Math.log(axis.delta / timeUnitSize.year) / Math.LN10));
var norm = (axis.delta / timeUnitSize.year) / magn;
if (norm < 1.5) {
size = 1;
} else if (norm < 3) {
size = 2;
} else if (norm < 7.5) {
size = 5;
} else {
size = 10;
}
size *= magn;
}
// minimum size for years is 1
if (size < 1) {
size = 1;
}
}
axis.tickSize = opts.tickSize || [size, unit];
var tickSize = axis.tickSize[0];
unit = axis.tickSize[1];
var step = tickSize * timeUnitSize[unit];
if (unit == "second") {
d.setSeconds(floorInBase(d.getSeconds(), tickSize));
} else if (unit == "minute") {
d.setMinutes(floorInBase(d.getMinutes(), tickSize));
} else if (unit == "hour") {
d.setHours(floorInBase(d.getHours(), tickSize));
} else if (unit == "month") {
d.setMonth(floorInBase(d.getMonth(), tickSize));
} else if (unit == "quarter") {
d.setMonth(3 * floorInBase(d.getMonth() / 3,
tickSize));
} else if (unit == "year") {
d.setFullYear(floorInBase(d.getFullYear(), tickSize));
}
// reset smaller components
d.setMilliseconds(0);
if (step >= timeUnitSize.minute) {
d.setSeconds(0);
}
if (step >= timeUnitSize.hour) {
d.setMinutes(0);
}
if (step >= timeUnitSize.day) {
d.setHours(0);
}
if (step >= timeUnitSize.day * 4) {
d.setDate(1);
}
if (step >= timeUnitSize.month * 2) {
d.setMonth(floorInBase(d.getMonth(), 3));
}
if (step >= timeUnitSize.quarter * 2) {
d.setMonth(floorInBase(d.getMonth(), 6));
}
if (step >= timeUnitSize.year) {
d.setMonth(0);
}
var carry = 0;
var v = Number.NaN;
var prev;
do {
prev = v;
v = d.getTime();
ticks.push(v);
if (unit == "month" || unit == "quarter") {
if (tickSize < 1) {
// a bit complicated - we'll divide the
// month/quarter up but we need to take
// care of fractions so we don't end up in
// the middle of a day
d.setDate(1);
var start = d.getTime();
d.setMonth(d.getMonth() +
(unit == "quarter" ? 3 : 1));
var end = d.getTime();
d.setTime(v + carry * timeUnitSize.hour + (end - start) * tickSize);
carry = d.getHours();
d.setHours(0);
} else {
d.setMonth(d.getMonth() +
tickSize * (unit == "quarter" ? 3 : 1));
}
} else if (unit == "year") {
d.setFullYear(d.getFullYear() + tickSize);
} else {
d.setTime(v + step);
}
} while (v < axis.max && v != prev);
return ticks;
};
axis.tickFormatter = function (v, axis) {
var d = dateGenerator(v, axis.options);
// first check global format
if (opts.timeformat != null) {
return formatDate(d, opts.timeformat, opts.monthNames, opts.dayNames);
}
// possibly use quarters if quarters are mentioned in
// any of these places
var useQuarters = (axis.options.tickSize &&
axis.options.tickSize[1] == "quarter") ||
(axis.options.minTickSize &&
axis.options.minTickSize[1] == "quarter");
var t = axis.tickSize[0] * timeUnitSize[axis.tickSize[1]];
var span = axis.max - axis.min;
var suffix = (opts.twelveHourClock) ? " %p" : "";
var hourCode = (opts.twelveHourClock) ? "%I" : "%H";
var fmt;
if (t < timeUnitSize.minute) {
fmt = hourCode + ":%M:%S" + suffix;
} else if (t < timeUnitSize.day) {
if (span < 2 * timeUnitSize.day) {
fmt = hourCode + ":%M" + suffix;
} else {
fmt = "%b %d " + hourCode + ":%M" + suffix;
}
} else if (t < timeUnitSize.month) {
fmt = "%b %d";
} else if ((useQuarters && t < timeUnitSize.quarter) ||
(!useQuarters && t < timeUnitSize.year)) {
if (span < timeUnitSize.year) {
fmt = "%b";
} else {
fmt = "%b %Y";
}
} else if (useQuarters && t < timeUnitSize.year) {
if (span < timeUnitSize.year) {
fmt = "Q%q";
} else {
fmt = "Q%q %Y";
}
} else {
fmt = "%Y";
}
var rt = formatDate(d, fmt, opts.monthNames, opts.dayNames);
return rt;
};
}
});
});
}
$.plot.plugins.push({
init: init,
options: options,
name: 'time',
version: '1.0'
});
// Time-axis support used to be in Flot core, which exposed the
// formatDate function on the plot object. Various plugins depend
// on the function, so we need to re-expose it here.
$.plot.formatDate = formatDate;
$.plot.dateGenerator = dateGenerator;
})(jQuery);
/* Flot plugin for automatically redrawing plots as the placeholder resizes.
Copyright (c) 2007-2014 IOLA and Ole Laursen.
Licensed under the MIT license.
It works by listening for changes on the placeholder div (through the jQuery
resize event plugin) - if the size changes, it will redraw the plot.
There are no options. If you need to disable the plugin for some plots, you
can just fix the size of their placeholders.
*/
/* Inline dependency:
* jQuery resize event - v1.1 - 3/14/2010
* http://benalman.com/projects/jquery-resize-plugin/
*
* Copyright (c) 2010 "Cowboy" Ben Alman
* Dual licensed under the MIT and GPL licenses.
* http://benalman.com/about/license/
*/
(function($,e,t){"$:nomunge";var i=[],n=$.resize=$.extend($.resize,{}),a,r=false,s="setTimeout",u="resize",m=u+"-special-event",o="pendingDelay",l="activeDelay",f="throttleWindow";n[o]=200;n[l]=20;n[f]=true;$.event.special[u]={setup:function(){if(!n[f]&&this[s]){return false}var e=$(this);i.push(this);e.data(m,{w:e.width(),h:e.height()});if(i.length===1){a=t;h()}},teardown:function(){if(!n[f]&&this[s]){return false}var e=$(this);for(var t=i.length-1;t>=0;t--){if(i[t]==this){i.splice(t,1);break}}e.removeData(m);if(!i.length){if(r){cancelAnimationFrame(a)}else{clearTimeout(a)}a=null}},add:function(e){if(!n[f]&&this[s]){return false}var i;function a(e,n,a){var r=$(this),s=r.data(m)||{};s.w=n!==t?n:r.width();s.h=a!==t?a:r.height();i.apply(this,arguments)}if($.isFunction(e)){i=e;return a}else{i=e.handler;e.handler=a}}};function h(t){if(r===true){r=t||1}for(var s=i.length-1;s>=0;s--){var l=$(i[s]);if(l[0]==e||l.is(":visible")){var f=l.width(),c=l.height(),d=l.data(m);if(d&&(f!==d.w||c!==d.h)){l.trigger(u,[d.w=f,d.h=c]);r=t||true}}else{d=l.data(m);d.w=0;d.h=0}}if(a!==null){if(r&&(t==null||t-r<1e3)){a=e.requestAnimationFrame(h)}else{a=setTimeout(h,n[o]);r=false}}}if(!e.requestAnimationFrame){e.requestAnimationFrame=function(){return e.webkitRequestAnimationFrame||e.mozRequestAnimationFrame||e.oRequestAnimationFrame||e.msRequestAnimationFrame||function(t,i){return e.setTimeout(function(){t((new Date).getTime())},n[l])}}()}if(!e.cancelAnimationFrame){e.cancelAnimationFrame=function(){return e.webkitCancelRequestAnimationFrame||e.mozCancelRequestAnimationFrame||e.oCancelRequestAnimationFrame||e.msCancelRequestAnimationFrame||clearTimeout}()}})(jQuery,this);
(function ($) {
var options = { }; // no options
function init(plot) {
function onResize() {
var placeholder = plot.getPlaceholder();
// somebody might have hidden us and we can't plot
// when we don't have the dimensions
if (placeholder.width() == 0 || placeholder.height() == 0)
return;
plot.resize();
plot.setupGrid();
plot.draw();
}
function bindEvents(plot, eventHolder) {
plot.getPlaceholder().resize(onResize);
}
function shutdown(plot, eventHolder) {
plot.getPlaceholder().unbind("resize", onResize);
}
plot.hooks.bindEvents.push(bindEvents);
plot.hooks.shutdown.push(shutdown);
}
$.plot.plugins.push({
init: init,
options: options,
name: 'resize',
version: '1.0'
});
})(jQuery);
/* Flot plugin for rendering pie charts.
Copyright (c) 2007-2014 IOLA and Ole Laursen.
Licensed under the MIT license.
The plugin assumes that each series has a single data value, and that each
value is a positive integer or zero. Negative numbers don't make sense for a
pie chart, and have unpredictable results. The values do NOT need to be
passed in as percentages; the plugin will calculate the total and per-slice
percentages internally.
* Created by Brian Medendorp
* Updated with contributions from btburnett3, Anthony Aragues and Xavi Ivars
The plugin supports these options:
series: {
pie: {
show: true/false
radius: 0-1 for percentage of fullsize, or a specified pixel length, or 'auto'
innerRadius: 0-1 for percentage of fullsize or a specified pixel length, for creating a donut effect
startAngle: 0-2 factor of PI used for starting angle (in radians) i.e 3/2 starts at the top, 0 and 2 have the same result
tilt: 0-1 for percentage to tilt the pie, where 1 is no tilt, and 0 is completely flat (nothing will show)
offset: {
top: integer value to move the pie up or down
left: integer value to move the pie left or right, or 'auto'
},
stroke: {
color: any hexidecimal color value (other formats may or may not work, so best to stick with something like '#FFF')
width: integer pixel width of the stroke
},
label: {
show: true/false, or 'auto'
formatter: a user-defined function that modifies the text/style of the label text
radius: 0-1 for percentage of fullsize, or a specified pixel length
background: {
color: any hexidecimal color value (other formats may or may not work, so best to stick with something like '#000')
opacity: 0-1
},
threshold: 0-1 for the percentage value at which to hide labels (if they're too small)
},
combine: {
threshold: 0-1 for the percentage value at which to combine slices (if they're too small)
color: any hexidecimal color value (other formats may or may not work, so best to stick with something like '#CCC'), if null, the plugin will automatically use the color of the first slice to be combined
label: any text value of what the combined slice should be labeled
}
highlight: {
opacity: 0-1
}
}
}
More detail and specific examples can be found in the included HTML file.
*/
(function($) {
// Maximum redraw attempts when fitting labels within the plot
var REDRAW_ATTEMPTS = 10;
// Factor by which to shrink the pie when fitting labels within the plot
var REDRAW_SHRINK = 0.95;
function init(plot) {
var canvas = null,
target = null,
options = null,
maxRadius = null,
centerLeft = null,
centerTop = null,
processed = false,
ctx = null;
// interactive variables
var highlights = [];
// add hook to determine if pie plugin in enabled, and then perform necessary operations
plot.hooks.processOptions.push(function(plot, options) {
if (options.series.pie.show) {
options.grid.show = false;
// set labels.show
if (options.series.pie.label.show == "auto") {
if (options.legend.show) {
options.series.pie.label.show = false;
} else {
options.series.pie.label.show = true;
}
}
// set radius
if (options.series.pie.radius == "auto") {
if (options.series.pie.label.show) {
options.series.pie.radius = 3/4;
} else {
options.series.pie.radius = 1;
}
}
// ensure sane tilt
if (options.series.pie.tilt > 1) {
options.series.pie.tilt = 1;
} else if (options.series.pie.tilt < 0) {
options.series.pie.tilt = 0;
}
}
});
plot.hooks.bindEvents.push(function(plot, eventHolder) {
var options = plot.getOptions();
if (options.series.pie.show) {
if (options.grid.hoverable) {
eventHolder.unbind("mousemove").mousemove(onMouseMove);
}
if (options.grid.clickable) {
eventHolder.unbind("click").click(onClick);
}
}
});
plot.hooks.processDatapoints.push(function(plot, series, data, datapoints) {
var options = plot.getOptions();
if (options.series.pie.show) {
processDatapoints(plot, series, data, datapoints);
}
});
plot.hooks.drawOverlay.push(function(plot, octx) {
var options = plot.getOptions();
if (options.series.pie.show) {
drawOverlay(plot, octx);
}
});
plot.hooks.draw.push(function(plot, newCtx) {
var options = plot.getOptions();
if (options.series.pie.show) {
draw(plot, newCtx);
}
});
function processDatapoints(plot, series, datapoints) {
if (!processed) {
processed = true;
canvas = plot.getCanvas();
target = $(canvas).parent();
options = plot.getOptions();
plot.setData(combine(plot.getData()));
}
}
function combine(data) {
var total = 0,
combined = 0,
numCombined = 0,
color = options.series.pie.combine.color,
newdata = [];
// Fix up the raw data from Flot, ensuring the data is numeric
for (var i = 0; i < data.length; ++i) {
var value = data[i].data;
// If the data is an array, we'll assume that it's a standard
// Flot x-y pair, and are concerned only with the second value.
// Note how we use the original array, rather than creating a
// new one; this is more efficient and preserves any extra data
// that the user may have stored in higher indexes.
if ($.isArray(value) && value.length == 1) {
value = value[0];
}
if ($.isArray(value)) {
// Equivalent to $.isNumeric() but compatible with jQuery < 1.7
if (!isNaN(parseFloat(value[1])) && isFinite(value[1])) {
value[1] = +value[1];
} else {
value[1] = 0;
}
} else if (!isNaN(parseFloat(value)) && isFinite(value)) {
value = [1, +value];
} else {
value = [1, 0];
}
data[i].data = [value];
}
// Sum up all the slices, so we can calculate percentages for each
for (var i = 0; i < data.length; ++i) {
total += data[i].data[0][1];
}
// Count the number of slices with percentages below the combine
// threshold; if it turns out to be just one, we won't combine.
for (var i = 0; i < data.length; ++i) {
var value = data[i].data[0][1];
if (value / total <= options.series.pie.combine.threshold) {
combined += value;
numCombined++;
if (!color) {
color = data[i].color;
}
}
}
for (var i = 0; i < data.length; ++i) {
var value = data[i].data[0][1];
if (numCombined < 2 || value / total > options.series.pie.combine.threshold) {
newdata.push(
$.extend(data[i], { /* extend to allow keeping all other original data values
and using them e.g. in labelFormatter. */
data: [[1, value]],
color: data[i].color,
label: data[i].label,
angle: value * Math.PI * 2 / total,
percent: value / (total / 100)
})
);
}
}
if (numCombined > 1) {
newdata.push({
data: [[1, combined]],
color: color,
label: options.series.pie.combine.label,
angle: combined * Math.PI * 2 / total,
percent: combined / (total / 100)
});
}
return newdata;
}
function draw(plot, newCtx) {
if (!target) {
return; // if no series were passed
}
var canvasWidth = plot.getPlaceholder().width(),
canvasHeight = plot.getPlaceholder().height(),
legendWidth = target.children().filter(".legend").children().width() || 0;
ctx = newCtx;
// WARNING: HACK! REWRITE THIS CODE AS SOON AS POSSIBLE!
// When combining smaller slices into an 'other' slice, we need to
// add a new series. Since Flot gives plugins no way to modify the
// list of series, the pie plugin uses a hack where the first call
// to processDatapoints results in a call to setData with the new
// list of series, then subsequent processDatapoints do nothing.
// The plugin-global 'processed' flag is used to control this hack;
// it starts out false, and is set to true after the first call to
// processDatapoints.
// Unfortunately this turns future setData calls into no-ops; they
// call processDatapoints, the flag is true, and nothing happens.
// To fix this we'll set the flag back to false here in draw, when
// all series have been processed, so the next sequence of calls to
// processDatapoints once again starts out with a slice-combine.
// This is really a hack; in 0.9 we need to give plugins a proper
// way to modify series before any processing begins.
processed = false;
// calculate maximum radius and center point
maxRadius = Math.min(canvasWidth, canvasHeight / options.series.pie.tilt) / 2;
centerTop = canvasHeight / 2 + options.series.pie.offset.top;
centerLeft = canvasWidth / 2;
if (options.series.pie.offset.left == "auto") {
if (options.legend.position.match("w")) {
centerLeft += legendWidth / 2;
} else {
centerLeft -= legendWidth / 2;
}
if (centerLeft < maxRadius) {
centerLeft = maxRadius;
} else if (centerLeft > canvasWidth - maxRadius) {
centerLeft = canvasWidth - maxRadius;
}
} else {
centerLeft += options.series.pie.offset.left;
}
var slices = plot.getData(),
attempts = 0;
// Keep shrinking the pie's radius until drawPie returns true,
// indicating that all the labels fit, or we try too many times.
do {
if (attempts > 0) {
maxRadius *= REDRAW_SHRINK;
}
attempts += 1;
clear();
if (options.series.pie.tilt <= 0.8) {
drawShadow();
}
} while (!drawPie() && attempts < REDRAW_ATTEMPTS)
if (attempts >= REDRAW_ATTEMPTS) {
clear();
target.prepend("<div class='error'>Could not draw pie with labels contained inside canvas</div>");
}
if (plot.setSeries && plot.insertLegend) {
plot.setSeries(slices);
plot.insertLegend();
}
// we're actually done at this point, just defining internal functions at this point
function clear() {
ctx.clearRect(0, 0, canvasWidth, canvasHeight);
target.children().filter(".pieLabel, .pieLabelBackground").remove();
}
function drawShadow() {
var shadowLeft = options.series.pie.shadow.left;
var shadowTop = options.series.pie.shadow.top;
var edge = 10;
var alpha = options.series.pie.shadow.alpha;
var radius = options.series.pie.radius > 1 ? options.series.pie.radius : maxRadius * options.series.pie.radius;
if (radius >= canvasWidth / 2 - shadowLeft || radius * options.series.pie.tilt >= canvasHeight / 2 - shadowTop || radius <= edge) {
return; // shadow would be outside canvas, so don't draw it
}
ctx.save();
ctx.translate(shadowLeft,shadowTop);
ctx.globalAlpha = alpha;
ctx.fillStyle = "#000";
// center and rotate to starting position
ctx.translate(centerLeft,centerTop);
ctx.scale(1, options.series.pie.tilt);
//radius -= edge;
for (var i = 1; i <= edge; i++) {
ctx.beginPath();
ctx.arc(0, 0, radius, 0, Math.PI * 2, false);
ctx.fill();
radius -= i;
}
ctx.restore();
}
function drawPie() {
var startAngle = Math.PI * options.series.pie.startAngle;
var radius = options.series.pie.radius > 1 ? options.series.pie.radius : maxRadius * options.series.pie.radius;
// center and rotate to starting position
ctx.save();
ctx.translate(centerLeft,centerTop);
ctx.scale(1, options.series.pie.tilt);
//ctx.rotate(startAngle); // start at top; -- This doesn't work properly in Opera
// draw slices
ctx.save();
var currentAngle = startAngle;
for (var i = 0; i < slices.length; ++i) {
slices[i].startAngle = currentAngle;
drawSlice(slices[i].angle, slices[i].color, true);
}
ctx.restore();
// draw slice outlines
if (options.series.pie.stroke.width > 0) {
ctx.save();
ctx.lineWidth = options.series.pie.stroke.width;
currentAngle = startAngle;
for (var i = 0; i < slices.length; ++i) {
drawSlice(slices[i].angle, options.series.pie.stroke.color, false);
}
ctx.restore();
}
// draw donut hole
drawDonutHole(ctx);
ctx.restore();
// Draw the labels, returning true if they fit within the plot
if (options.series.pie.label.show) {
return drawLabels();
} else return true;
function drawSlice(angle, color, fill) {
if (angle <= 0 || isNaN(angle)) {
return;
}
if (fill) {
ctx.fillStyle = color;
} else {
ctx.strokeStyle = color;
ctx.lineJoin = "round";
}
ctx.beginPath();
if (Math.abs(angle - Math.PI * 2) > 0.000000001) {
ctx.moveTo(0, 0); // Center of the pie
}
//ctx.arc(0, 0, radius, 0, angle, false); // This doesn't work properly in Opera
ctx.arc(0, 0, radius,currentAngle, currentAngle + angle / 2, false);
ctx.arc(0, 0, radius,currentAngle + angle / 2, currentAngle + angle, false);
ctx.closePath();
//ctx.rotate(angle); // This doesn't work properly in Opera
currentAngle += angle;
if (fill) {
ctx.fill();
} else {
ctx.stroke();
}
}
function drawLabels() {
var currentAngle = startAngle;
var radius = options.series.pie.label.radius > 1 ? options.series.pie.label.radius : maxRadius * options.series.pie.label.radius;
for (var i = 0; i < slices.length; ++i) {
if (slices[i].percent >= options.series.pie.label.threshold * 100) {
if (!drawLabel(slices[i], currentAngle, i)) {
return false;
}
}
currentAngle += slices[i].angle;
}
return true;
function drawLabel(slice, startAngle, index) {
if (slice.data[0][1] == 0) {
return true;
}
// format label text
var lf = options.legend.labelFormatter, text, plf = options.series.pie.label.formatter;
if (lf) {
text = lf(slice.label, slice);
} else {
text = slice.label;
}
if (plf) {
text = plf(text, slice);
}
var halfAngle = ((startAngle + slice.angle) + startAngle) / 2;
var x = centerLeft + Math.round(Math.cos(halfAngle) * radius);
var y = centerTop + Math.round(Math.sin(halfAngle) * radius) * options.series.pie.tilt;
var html = "<span class='pieLabel' id='pieLabel" + index + "' style='position:absolute;top:" + y + "px;left:" + x + "px;'>" + text + "</span>";
target.append(html);
var label = target.children("#pieLabel" + index);
var labelTop = (y - label.height() / 2);
var labelLeft = (x - label.width() / 2);
label.css("top", labelTop);
label.css("left", labelLeft);
// check to make sure that the label is not outside the canvas
if (0 - labelTop > 0 || 0 - labelLeft > 0 || canvasHeight - (labelTop + label.height()) < 0 || canvasWidth - (labelLeft + label.width()) < 0) {
return false;
}
if (options.series.pie.label.background.opacity != 0) {
// put in the transparent background separately to avoid blended labels and label boxes
var c = options.series.pie.label.background.color;
if (c == null) {
c = slice.color;
}
var pos = "top:" + labelTop + "px;left:" + labelLeft + "px;";
$("<div class='pieLabelBackground' style='position:absolute;width:" + label.width() + "px;height:" + label.height() + "px;" + pos + "background-color:" + c + ";'></div>")
.css("opacity", options.series.pie.label.background.opacity)
.insertBefore(label);
}
return true;
} // end individual label function
} // end drawLabels function
} // end drawPie function
} // end draw function
// Placed here because it needs to be accessed from multiple locations
function drawDonutHole(layer) {
if (options.series.pie.innerRadius > 0) {
// subtract the center
layer.save();
var innerRadius = options.series.pie.innerRadius > 1 ? options.series.pie.innerRadius : maxRadius * options.series.pie.innerRadius;
layer.globalCompositeOperation = "destination-out"; // this does not work with excanvas, but it will fall back to using the stroke color
layer.beginPath();
layer.fillStyle = options.series.pie.stroke.color;
layer.arc(0, 0, innerRadius, 0, Math.PI * 2, false);
layer.fill();
layer.closePath();
layer.restore();
// add inner stroke
layer.save();
layer.beginPath();
layer.strokeStyle = options.series.pie.stroke.color;
layer.arc(0, 0, innerRadius, 0, Math.PI * 2, false);
layer.stroke();
layer.closePath();
layer.restore();
// TODO: add extra shadow inside hole (with a mask) if the pie is tilted.
}
}
//-- Additional Interactive related functions --
function isPointInPoly(poly, pt) {
for(var c = false, i = -1, l = poly.length, j = l - 1; ++i < l; j = i)
((poly[i][1] <= pt[1] && pt[1] < poly[j][1]) || (poly[j][1] <= pt[1] && pt[1]< poly[i][1]))
&& (pt[0] < (poly[j][0] - poly[i][0]) * (pt[1] - poly[i][1]) / (poly[j][1] - poly[i][1]) + poly[i][0])
&& (c = !c);
return c;
}
function findNearbySlice(mouseX, mouseY) {
var slices = plot.getData(),
options = plot.getOptions(),
radius = options.series.pie.radius > 1 ? options.series.pie.radius : maxRadius * options.series.pie.radius,
x, y;
for (var i = 0; i < slices.length; ++i) {
var s = slices[i];
if (s.pie.show) {
ctx.save();
ctx.beginPath();
ctx.moveTo(0, 0); // Center of the pie
//ctx.scale(1, options.series.pie.tilt); // this actually seems to break everything when here.
ctx.arc(0, 0, radius, s.startAngle, s.startAngle + s.angle / 2, false);
ctx.arc(0, 0, radius, s.startAngle + s.angle / 2, s.startAngle + s.angle, false);
ctx.closePath();
x = mouseX - centerLeft;
y = mouseY - centerTop;
if (ctx.isPointInPath) {
if (ctx.isPointInPath(mouseX - centerLeft, mouseY - centerTop)) {
ctx.restore();
return {
datapoint: [s.percent, s.data],
dataIndex: 0,
series: s,
seriesIndex: i
};
}
} else {
// excanvas for IE doesn;t support isPointInPath, this is a workaround.
var p1X = radius * Math.cos(s.startAngle),
p1Y = radius * Math.sin(s.startAngle),
p2X = radius * Math.cos(s.startAngle + s.angle / 4),
p2Y = radius * Math.sin(s.startAngle + s.angle / 4),
p3X = radius * Math.cos(s.startAngle + s.angle / 2),
p3Y = radius * Math.sin(s.startAngle + s.angle / 2),
p4X = radius * Math.cos(s.startAngle + s.angle / 1.5),
p4Y = radius * Math.sin(s.startAngle + s.angle / 1.5),
p5X = radius * Math.cos(s.startAngle + s.angle),
p5Y = radius * Math.sin(s.startAngle + s.angle),
arrPoly = [[0, 0], [p1X, p1Y], [p2X, p2Y], [p3X, p3Y], [p4X, p4Y], [p5X, p5Y]],
arrPoint = [x, y];
// TODO: perhaps do some mathmatical trickery here with the Y-coordinate to compensate for pie tilt?
if (isPointInPoly(arrPoly, arrPoint)) {
ctx.restore();
return {
datapoint: [s.percent, s.data],
dataIndex: 0,
series: s,
seriesIndex: i
};
}
}
ctx.restore();
}
}
return null;
}
function onMouseMove(e) {
triggerClickHoverEvent("plothover", e);
}
function onClick(e) {
triggerClickHoverEvent("plotclick", e);
}
// trigger click or hover event (they send the same parameters so we share their code)
function triggerClickHoverEvent(eventname, e) {
var offset = plot.offset();
var canvasX = parseInt(e.pageX - offset.left);
var canvasY = parseInt(e.pageY - offset.top);
var item = findNearbySlice(canvasX, canvasY);
if (options.grid.autoHighlight) {
// clear auto-highlights
for (var i = 0; i < highlights.length; ++i) {
var h = highlights[i];
if (h.auto == eventname && !(item && h.series == item.series)) {
unhighlight(h.series);
}
}
}
// highlight the slice
if (item) {
highlight(item.series, eventname);
}
// trigger any hover bind events
var pos = { pageX: e.pageX, pageY: e.pageY };
target.trigger(eventname, [pos, item]);
}
function highlight(s, auto) {
//if (typeof s == "number") {
// s = series[s];
//}
var i = indexOfHighlight(s);
if (i == -1) {
highlights.push({ series: s, auto: auto });
plot.triggerRedrawOverlay();
} else if (!auto) {
highlights[i].auto = false;
}
}
function unhighlight(s) {
if (s == null) {
highlights = [];
plot.triggerRedrawOverlay();
}
//if (typeof s == "number") {
// s = series[s];
//}
var i = indexOfHighlight(s);
if (i != -1) {
highlights.splice(i, 1);
plot.triggerRedrawOverlay();
}
}
function indexOfHighlight(s) {
for (var i = 0; i < highlights.length; ++i) {
var h = highlights[i];
if (h.series == s)
return i;
}
return -1;
}
function drawOverlay(plot, octx) {
var options = plot.getOptions();
var radius = options.series.pie.radius > 1 ? options.series.pie.radius : maxRadius * options.series.pie.radius;
octx.save();
octx.translate(centerLeft, centerTop);
octx.scale(1, options.series.pie.tilt);
for (var i = 0; i < highlights.length; ++i) {
drawHighlight(highlights[i].series);
}
drawDonutHole(octx);
octx.restore();
function drawHighlight(series) {
if (series.angle <= 0 || isNaN(series.angle)) {
return;
}
//octx.fillStyle = parseColor(options.series.pie.highlight.color).scale(null, null, null, options.series.pie.highlight.opacity).toString();
octx.fillStyle = "rgba(255, 255, 255, " + options.series.pie.highlight.opacity + ")"; // this is temporary until we have access to parseColor
octx.beginPath();
if (Math.abs(series.angle - Math.PI * 2) > 0.000000001) {
octx.moveTo(0, 0); // Center of the pie
}
octx.arc(0, 0, radius, series.startAngle, series.startAngle + series.angle / 2, false);
octx.arc(0, 0, radius, series.startAngle + series.angle / 2, series.startAngle + series.angle, false);
octx.closePath();
octx.fill();
}
}
} // end init (plugin body)
// define pie specific options and their default values
var options = {
series: {
pie: {
show: false,
radius: "auto", // actual radius of the visible pie (based on full calculated radius if <=1, or hard pixel value)
innerRadius: 0, /* for donut */
startAngle: 3/2,
tilt: 1,
shadow: {
left: 5, // shadow left offset
top: 15, // shadow top offset
alpha: 0.02 // shadow alpha
},
offset: {
top: 0,
left: "auto"
},
stroke: {
color: "#fff",
width: 1
},
label: {
show: "auto",
formatter: function(label, slice) {
return "<div style='font-size:x-small;text-align:center;padding:2px;color:" + slice.color + ";'>" + label + "<br/>" + Math.round(slice.percent) + "%</div>";
}, // formatter function
radius: 1, // radius at which to place the labels (based on full calculated radius if <=1, or hard pixel value)
background: {
color: null,
opacity: 0
},
threshold: 0 // percentage at which to hide the label (i.e. the slice is too narrow)
},
combine: {
threshold: -1, // percentage at which to combine little slices into one larger slice
color: null, // color to give the new slice (auto-generated if null)
label: "Other" // label to give the new slice
},
highlight: {
//color: "#fff", // will add this functionality once parseColor is available
opacity: 0.5
}
}
}
};
$.plot.plugins.push({
init: init,
options: options,
name: "pie",
version: "1.1"
});
})(jQuery);
/* Flot plugin for selecting regions of a plot.
Copyright (c) 2007-2014 IOLA and Ole Laursen.
Licensed under the MIT license.
The plugin supports these options:
selection: {
mode: null or "x" or "y" or "xy",
color: color,
shape: "round" or "miter" or "bevel",
minSize: number of pixels
}
Selection support is enabled by setting the mode to one of "x", "y" or "xy".
In "x" mode, the user will only be able to specify the x range, similarly for
"y" mode. For "xy", the selection becomes a rectangle where both ranges can be
specified. "color" is color of the selection (if you need to change the color
later on, you can get to it with plot.getOptions().selection.color). "shape"
is the shape of the corners of the selection.
"minSize" is the minimum size a selection can be in pixels. This value can
be customized to determine the smallest size a selection can be and still
have the selection rectangle be displayed. When customizing this value, the
fact that it refers to pixels, not axis units must be taken into account.
Thus, for example, if there is a bar graph in time mode with BarWidth set to 1
minute, setting "minSize" to 1 will not make the minimum selection size 1
minute, but rather 1 pixel. Note also that setting "minSize" to 0 will prevent
"plotunselected" events from being fired when the user clicks the mouse without
dragging.
When selection support is enabled, a "plotselected" event will be emitted on
the DOM element you passed into the plot function. The event handler gets a
parameter with the ranges selected on the axes, like this:
placeholder.bind( "plotselected", function( event, ranges ) {
alert("You selected " + ranges.xaxis.from + " to " + ranges.xaxis.to)
// similar for yaxis - with multiple axes, the extra ones are in
// x2axis, x3axis, ...
});
The "plotselected" event is only fired when the user has finished making the
selection. A "plotselecting" event is fired during the process with the same
parameters as the "plotselected" event, in case you want to know what's
happening while it's happening,
A "plotunselected" event with no arguments is emitted when the user clicks the
mouse to remove the selection. As stated above, setting "minSize" to 0 will
destroy this behavior.
The plugin allso adds the following methods to the plot object:
- setSelection( ranges, preventEvent )
Set the selection rectangle. The passed in ranges is on the same form as
returned in the "plotselected" event. If the selection mode is "x", you
should put in either an xaxis range, if the mode is "y" you need to put in
an yaxis range and both xaxis and yaxis if the selection mode is "xy", like
this:
setSelection({ xaxis: { from: 0, to: 10 }, yaxis: { from: 40, to: 60 } });
setSelection will trigger the "plotselected" event when called. If you don't
want that to happen, e.g. if you're inside a "plotselected" handler, pass
true as the second parameter. If you are using multiple axes, you can
specify the ranges on any of those, e.g. as x2axis/x3axis/... instead of
xaxis, the plugin picks the first one it sees.
- clearSelection( preventEvent )
Clear the selection rectangle. Pass in true to avoid getting a
"plotunselected" event.
- getSelection()
Returns the current selection in the same format as the "plotselected"
event. If there's currently no selection, the function returns null.
*/
(function ($) {
function init(plot) {
var selection = {
first: { x: -1, y: -1}, second: { x: -1, y: -1},
show: false,
active: false
};
// FIXME: The drag handling implemented here should be
// abstracted out, there's some similar code from a library in
// the navigation plugin, this should be massaged a bit to fit
// the Flot cases here better and reused. Doing this would
// make this plugin much slimmer.
var savedhandlers = {};
var mouseUpHandler = null;
function onMouseMove(e) {
if (selection.active) {
updateSelection(e);
plot.getPlaceholder().trigger("plotselecting", [ getSelection() ]);
}
}
function onMouseDown(e) {
if (e.which != 1) // only accept left-click
return;
// cancel out any text selections
document.body.focus();
// prevent text selection and drag in old-school browsers
if (document.onselectstart !== undefined && savedhandlers.onselectstart == null) {
savedhandlers.onselectstart = document.onselectstart;
document.onselectstart = function () { return false; };
}
if (document.ondrag !== undefined && savedhandlers.ondrag == null) {
savedhandlers.ondrag = document.ondrag;
document.ondrag = function () { return false; };
}
setSelectionPos(selection.first, e);
selection.active = true;
// this is a bit silly, but we have to use a closure to be
// able to whack the same handler again
mouseUpHandler = function (e) { onMouseUp(e); };
$(document).one("mouseup", mouseUpHandler);
}
function onMouseUp(e) {
mouseUpHandler = null;
// revert drag stuff for old-school browsers
if (document.onselectstart !== undefined)
document.onselectstart = savedhandlers.onselectstart;
if (document.ondrag !== undefined)
document.ondrag = savedhandlers.ondrag;
// no more dragging
selection.active = false;
updateSelection(e);
if (selectionIsSane())
triggerSelectedEvent();
else {
// this counts as a clear
plot.getPlaceholder().trigger("plotunselected", [ ]);
plot.getPlaceholder().trigger("plotselecting", [ null ]);
}
return false;
}
function getSelection() {
if (!selectionIsSane())
return null;
if (!selection.show) return null;
var r = {}, c1 = selection.first, c2 = selection.second;
$.each(plot.getAxes(), function (name, axis) {
if (axis.used) {
var p1 = axis.c2p(c1[axis.direction]), p2 = axis.c2p(c2[axis.direction]);
r[name] = { from: Math.min(p1, p2), to: Math.max(p1, p2) };
}
});
return r;
}
function triggerSelectedEvent() {
var r = getSelection();
plot.getPlaceholder().trigger("plotselected", [ r ]);
// backwards-compat stuff, to be removed in future
if (r.xaxis && r.yaxis)
plot.getPlaceholder().trigger("selected", [ { x1: r.xaxis.from, y1: r.yaxis.from, x2: r.xaxis.to, y2: r.yaxis.to } ]);
}
function clamp(min, value, max) {
return value < min ? min: (value > max ? max: value);
}
function setSelectionPos(pos, e) {
var o = plot.getOptions();
var offset = plot.getPlaceholder().offset();
var plotOffset = plot.getPlotOffset();
pos.x = clamp(0, e.pageX - offset.left - plotOffset.left, plot.width());
pos.y = clamp(0, e.pageY - offset.top - plotOffset.top, plot.height());
if (o.selection.mode == "y")
pos.x = pos == selection.first ? 0 : plot.width();
if (o.selection.mode == "x")
pos.y = pos == selection.first ? 0 : plot.height();
}
function updateSelection(pos) {
if (pos.pageX == null)
return;
setSelectionPos(selection.second, pos);
if (selectionIsSane()) {
selection.show = true;
plot.triggerRedrawOverlay();
}
else
clearSelection(true);
}
function clearSelection(preventEvent) {
if (selection.show) {
selection.show = false;
plot.triggerRedrawOverlay();
if (!preventEvent)
plot.getPlaceholder().trigger("plotunselected", [ ]);
}
}
// function taken from markings support in Flot
function extractRange(ranges, coord) {
var axis, from, to, key, axes = plot.getAxes();
for (var k in axes) {
axis = axes[k];
if (axis.direction == coord) {
key = coord + axis.n + "axis";
if (!ranges[key] && axis.n == 1)
key = coord + "axis"; // support x1axis as xaxis
if (ranges[key]) {
from = ranges[key].from;
to = ranges[key].to;
break;
}
}
}
// backwards-compat stuff - to be removed in future
if (!ranges[key]) {
axis = coord == "x" ? plot.getXAxes()[0] : plot.getYAxes()[0];
from = ranges[coord + "1"];
to = ranges[coord + "2"];
}
// auto-reverse as an added bonus
if (from != null && to != null && from > to) {
var tmp = from;
from = to;
to = tmp;
}
return { from: from, to: to, axis: axis };
}
function setSelection(ranges, preventEvent) {
var axis, range, o = plot.getOptions();
if (o.selection.mode == "y") {
selection.first.x = 0;
selection.second.x = plot.width();
}
else {
range = extractRange(ranges, "x");
selection.first.x = range.axis.p2c(range.from);
selection.second.x = range.axis.p2c(range.to);
}
if (o.selection.mode == "x") {
selection.first.y = 0;
selection.second.y = plot.height();
}
else {
range = extractRange(ranges, "y");
selection.first.y = range.axis.p2c(range.from);
selection.second.y = range.axis.p2c(range.to);
}
selection.show = true;
plot.triggerRedrawOverlay();
if (!preventEvent && selectionIsSane())
triggerSelectedEvent();
}
function selectionIsSane() {
var minSize = plot.getOptions().selection.minSize;
return Math.abs(selection.second.x - selection.first.x) >= minSize &&
Math.abs(selection.second.y - selection.first.y) >= minSize;
}
plot.clearSelection = clearSelection;
plot.setSelection = setSelection;
plot.getSelection = getSelection;
plot.hooks.bindEvents.push(function(plot, eventHolder) {
var o = plot.getOptions();
if (o.selection.mode != null) {
eventHolder.mousemove(onMouseMove);
eventHolder.mousedown(onMouseDown);
}
});
plot.hooks.drawOverlay.push(function (plot, ctx) {
// draw selection
if (selection.show && selectionIsSane()) {
var plotOffset = plot.getPlotOffset();
var o = plot.getOptions();
ctx.save();
ctx.translate(plotOffset.left, plotOffset.top);
var c = $.color.parse(o.selection.color);
ctx.strokeStyle = c.scale('a', 0.8).toString();
ctx.lineWidth = 1;
ctx.lineJoin = o.selection.shape;
ctx.fillStyle = c.scale('a', 0.4).toString();
var x = Math.min(selection.first.x, selection.second.x) + 0.5,
y = Math.min(selection.first.y, selection.second.y) + 0.5,
w = Math.abs(selection.second.x - selection.first.x) - 1,
h = Math.abs(selection.second.y - selection.first.y) - 1;
ctx.fillRect(x, y, w, h);
ctx.strokeRect(x, y, w, h);
ctx.restore();
}
});
plot.hooks.shutdown.push(function (plot, eventHolder) {
eventHolder.unbind("mousemove", onMouseMove);
eventHolder.unbind("mousedown", onMouseDown);
if (mouseUpHandler)
$(document).unbind("mouseup", mouseUpHandler);
});
}
$.plot.plugins.push({
init: init,
options: {
selection: {
mode: null, // one of null, "x", "y" or "xy"
color: "#e8cfac",
shape: "round", // one of "round", "miter", or "bevel"
minSize: 5 // minimum number of pixels
}
},
name: 'selection',
version: '1.1'
});
})(jQuery);
/* Flot plugin for stacking data sets rather than overlyaing them.
Copyright (c) 2007-2014 IOLA and Ole Laursen.
Licensed under the MIT license.
The plugin assumes the data is sorted on x (or y if stacking horizontally).
For line charts, it is assumed that if a line has an undefined gap (from a
null point), then the line above it should have the same gap - insert zeros
instead of "null" if you want another behaviour. This also holds for the start
and end of the chart. Note that stacking a mix of positive and negative values
in most instances doesn't make sense (so it looks weird).
Two or more series are stacked when their "stack" attribute is set to the same
key (which can be any number or string or just "true"). To specify the default
stack, you can set the stack option like this:
series: {
stack: null/false, true, or a key (number/string)
}
You can also specify it for a single series, like this:
$.plot( $("#placeholder"), [{
data: [ ... ],
stack: true
}])
The stacking order is determined by the order of the data series in the array
(later series end up on top of the previous).
Internally, the plugin modifies the datapoints in each series, adding an
offset to the y value. For line series, extra data points are inserted through
interpolation. If there's a second y value, it's also adjusted (e.g for bar
charts or filled areas).
*/
(function ($) {
var options = {
series: { stack: null } // or number/string
};
function init(plot) {
function findMatchingSeries(s, allseries) {
var res = null;
for (var i = 0; i < allseries.length; ++i) {
if (s == allseries[i])
break;
if (allseries[i].stack == s.stack)
res = allseries[i];
}
return res;
}
function stackData(plot, s, datapoints) {
if (s.stack == null || s.stack === false)
return;
var other = findMatchingSeries(s, plot.getData());
if (!other)
return;
var ps = datapoints.pointsize,
points = datapoints.points,
otherps = other.datapoints.pointsize,
otherpoints = other.datapoints.points,
newpoints = [],
px, py, intery, qx, qy, bottom,
withlines = s.lines.show,
horizontal = s.bars.horizontal,
withbottom = ps > 2 && (horizontal ? datapoints.format[2].x : datapoints.format[2].y),
withsteps = withlines && s.lines.steps,
fromgap = true,
keyOffset = horizontal ? 1 : 0,
accumulateOffset = horizontal ? 0 : 1,
i = 0, j = 0, l, m;
while (true) {
if (i >= points.length)
break;
l = newpoints.length;
if (points[i] == null) {
// copy gaps
for (m = 0; m < ps; ++m)
newpoints.push(points[i + m]);
i += ps;
}
else if (j >= otherpoints.length) {
// for lines, we can't use the rest of the points
if (!withlines) {
for (m = 0; m < ps; ++m)
newpoints.push(points[i + m]);
}
i += ps;
}
else if (otherpoints[j] == null) {
// oops, got a gap
for (m = 0; m < ps; ++m)
newpoints.push(null);
fromgap = true;
j += otherps;
}
else {
// cases where we actually got two points
px = points[i + keyOffset];
py = points[i + accumulateOffset];
qx = otherpoints[j + keyOffset];
qy = otherpoints[j + accumulateOffset];
bottom = 0;
if (px == qx) {
for (m = 0; m < ps; ++m)
newpoints.push(points[i + m]);
newpoints[l + accumulateOffset] += qy;
bottom = qy;
i += ps;
j += otherps;
}
else if (px > qx) {
// we got past point below, might need to
// insert interpolated extra point
if (withlines && i > 0 && points[i - ps] != null) {
intery = py + (points[i - ps + accumulateOffset] - py) * (qx - px) / (points[i - ps + keyOffset] - px);
newpoints.push(qx);
newpoints.push(intery + qy);
for (m = 2; m < ps; ++m)
newpoints.push(points[i + m]);
bottom = qy;
}
j += otherps;
}
else { // px < qx
if (fromgap && withlines) {
// if we come from a gap, we just skip this point
i += ps;
continue;
}
for (m = 0; m < ps; ++m)
newpoints.push(points[i + m]);
// we might be able to interpolate a point below,
// this can give us a better y
if (withlines && j > 0 && otherpoints[j - otherps] != null)
bottom = qy + (otherpoints[j - otherps + accumulateOffset] - qy) * (px - qx) / (otherpoints[j - otherps + keyOffset] - qx);
newpoints[l + accumulateOffset] += bottom;
i += ps;
}
fromgap = false;
if (l != newpoints.length && withbottom)
newpoints[l + 2] += bottom;
}
// maintain the line steps invariant
if (withsteps && l != newpoints.length && l > 0
&& newpoints[l] != null
&& newpoints[l] != newpoints[l - ps]
&& newpoints[l + 1] != newpoints[l - ps + 1]) {
for (m = 0; m < ps; ++m)
newpoints[l + ps + m] = newpoints[l + m];
newpoints[l + 1] = newpoints[l - ps + 1];
}
}
datapoints.points = newpoints;
}
plot.hooks.processDatapoints.push(stackData);
}
$.plot.plugins.push({
init: init,
options: options,
name: 'stack',
version: '1.2'
});
})(jQuery);
/* Flot plugin for showing crosshairs when the mouse hovers over the plot.
Copyright (c) 2007-2014 IOLA and Ole Laursen.
Licensed under the MIT license.
The plugin supports these options:
crosshair: {
mode: null or "x" or "y" or "xy"
color: color
lineWidth: number
}
Set the mode to one of "x", "y" or "xy". The "x" mode enables a vertical
crosshair that lets you trace the values on the x axis, "y" enables a
horizontal crosshair and "xy" enables them both. "color" is the color of the
crosshair (default is "rgba(170, 0, 0, 0.80)"), "lineWidth" is the width of
the drawn lines (default is 1).
The plugin also adds four public methods:
- setCrosshair( pos )
Set the position of the crosshair. Note that this is cleared if the user
moves the mouse. "pos" is in coordinates of the plot and should be on the
form { x: xpos, y: ypos } (you can use x2/x3/... if you're using multiple
axes), which is coincidentally the same format as what you get from a
"plothover" event. If "pos" is null, the crosshair is cleared.
- clearCrosshair()
Clear the crosshair.
- lockCrosshair(pos)
Cause the crosshair to lock to the current location, no longer updating if
the user moves the mouse. Optionally supply a position (passed on to
setCrosshair()) to move it to.
Example usage:
var myFlot = $.plot( $("#graph"), ..., { crosshair: { mode: "x" } } };
$("#graph").bind( "plothover", function ( evt, position, item ) {
if ( item ) {
// Lock the crosshair to the data point being hovered
myFlot.lockCrosshair({
x: item.datapoint[ 0 ],
y: item.datapoint[ 1 ]
});
} else {
// Return normal crosshair operation
myFlot.unlockCrosshair();
}
});
- unlockCrosshair()
Free the crosshair to move again after locking it.
*/
(function ($) {
var options = {
crosshair: {
mode: null, // one of null, "x", "y" or "xy",
color: "rgba(170, 0, 0, 0.80)",
lineWidth: 1
}
};
function init(plot) {
// position of crosshair in pixels
var crosshair = { x: -1, y: -1, locked: false };
plot.setCrosshair = function setCrosshair(pos) {
if (!pos)
crosshair.x = -1;
else {
var o = plot.p2c(pos);
crosshair.x = Math.max(0, Math.min(o.left, plot.width()));
crosshair.y = Math.max(0, Math.min(o.top, plot.height()));
}
plot.triggerRedrawOverlay();
};
plot.clearCrosshair = plot.setCrosshair; // passes null for pos
plot.lockCrosshair = function lockCrosshair(pos) {
if (pos)
plot.setCrosshair(pos);
crosshair.locked = true;
};
plot.unlockCrosshair = function unlockCrosshair() {
crosshair.locked = false;
};
function onMouseOut(e) {
if (crosshair.locked)
return;
if (crosshair.x != -1) {
crosshair.x = -1;
plot.triggerRedrawOverlay();
}
}
function onMouseMove(e) {
if (crosshair.locked)
return;
if (plot.getSelection && plot.getSelection()) {
crosshair.x = -1; // hide the crosshair while selecting
return;
}
var offset = plot.offset();
crosshair.x = Math.max(0, Math.min(e.pageX - offset.left, plot.width()));
crosshair.y = Math.max(0, Math.min(e.pageY - offset.top, plot.height()));
plot.triggerRedrawOverlay();
}
plot.hooks.bindEvents.push(function (plot, eventHolder) {
if (!plot.getOptions().crosshair.mode)
return;
eventHolder.mouseout(onMouseOut);
eventHolder.mousemove(onMouseMove);
});
plot.hooks.drawOverlay.push(function (plot, ctx) {
var c = plot.getOptions().crosshair;
if (!c.mode)
return;
var plotOffset = plot.getPlotOffset();
ctx.save();
ctx.translate(plotOffset.left, plotOffset.top);
if (crosshair.x != -1) {
var adj = plot.getOptions().crosshair.lineWidth % 2 ? 0.5 : 0;
ctx.strokeStyle = c.color;
ctx.lineWidth = c.lineWidth;
ctx.lineJoin = "round";
ctx.beginPath();
if (c.mode.indexOf("x") != -1) {
var drawX = Math.floor(crosshair.x) + adj;
ctx.moveTo(drawX, 0);
ctx.lineTo(drawX, plot.height());
}
if (c.mode.indexOf("y") != -1) {
var drawY = Math.floor(crosshair.y) + adj;
ctx.moveTo(0, drawY);
ctx.lineTo(plot.width(), drawY);
}
ctx.stroke();
}
ctx.restore();
});
plot.hooks.shutdown.push(function (plot, eventHolder) {
eventHolder.unbind("mouseout", onMouseOut);
eventHolder.unbind("mousemove", onMouseMove);
});
}
$.plot.plugins.push({
init: init,
options: options,
name: 'crosshair',
version: '1.0'
});
})(jQuery);
/*
* jquery.flot.tooltip
*
* description: easy-to-use tooltips for Flot charts
* version: 0.9.0
* authors: Krzysztof Urbas @krzysu [myviews.pl],Evan Steinkerchner @Roundaround
* website: https://github.com/krzysu/flot.tooltip
*
* build on 2016-07-26
* released under MIT License, 2012
*/
!function(a){var b={tooltip:{show:!1,cssClass:"flotTip",content:"%s | X: %x | Y: %y",xDateFormat:null,yDateFormat:null,monthNames:null,dayNames:null,shifts:{x:10,y:20},defaultTheme:!0,snap:!0,lines:!1,clickTips:!1,onHover:function(a,b){},$compat:!1}};b.tooltipOpts=b.tooltip;var c=function(a){this.tipPosition={x:0,y:0},this.init(a)};c.prototype.init=function(b){function c(a){var c={};c.x=a.pageX,c.y=a.pageY,b.setTooltipPosition(c)}function d(c,d,g){f.clickmode?(a(b.getPlaceholder()).bind("plothover",e),b.hideTooltip(),f.clickmode=!1):(e(c,d,g),f.getDomElement().is(":visible")&&(a(b.getPlaceholder()).unbind("plothover",e),f.clickmode=!0))}function e(c,d,e){var g=function(a,b,c,d){return Math.sqrt((c-a)*(c-a)+(d-b)*(d-b))},h=function(a,b,c,d,e,f,h){if(!h||(h=function(a,b,c,d,e,f){if("undefined"!=typeof c)return{x:c,y:b};if("undefined"!=typeof d)return{x:a,y:d};var g,h=-1/((f-d)/(e-c));return{x:g=(e*(a*h-b+d)+c*(a*-h+b-f))/(h*(e-c)+d-f),y:h*g-h*a+b}}(a,b,c,d,e,f),h.x>=Math.min(c,e)&&h.x<=Math.max(c,e)&&h.y>=Math.min(d,f)&&h.y<=Math.max(d,f))){var i=d-f,j=e-c,k=c*f-d*e;return Math.abs(i*a+j*b+k)/Math.sqrt(i*i+j*j)}var l=g(a,b,c,d),m=g(a,b,e,f);return l>m?m:l};if(e)b.showTooltip(e,f.tooltipOptions.snap?e:d);else if(f.plotOptions.series.lines.show&&f.tooltipOptions.lines===!0){var i=f.plotOptions.grid.mouseActiveRadius,j={distance:i+1},k=d;a.each(b.getData(),function(a,c){for(var e=0,i=-1,l=1;l<c.data.length;l++)c.data[l-1][0]<=d.x&&c.data[l][0]>=d.x&&(e=l-1,i=l);if(-1===i)return void b.hideTooltip();var m={x:c.data[e][0],y:c.data[e][1]},n={x:c.data[i][0],y:c.data[i][1]},o=h(c.xaxis.p2c(d.x),c.yaxis.p2c(d.y),c.xaxis.p2c(m.x),c.yaxis.p2c(m.y),c.xaxis.p2c(n.x),c.yaxis.p2c(n.y),!1);if(o<j.distance){var p=g(m.x,m.y,d.x,d.y)<g(d.x,d.y,n.x,n.y)?e:i,q=(c.datapoints.pointsize,[d.x,m.y+(n.y-m.y)*((d.x-m.x)/(n.x-m.x))]),r={datapoint:q,dataIndex:p,series:c,seriesIndex:a};j={distance:o,item:r},f.tooltipOptions.snap&&(k={pageX:c.xaxis.p2c(q[0]),pageY:c.yaxis.p2c(q[1])})}}),j.distance<i+1?b.showTooltip(j.item,k):b.hideTooltip()}else b.hideTooltip()}var f=this,g=a.plot.plugins.length;if(this.plotPlugins=[],g)for(var h=0;g>h;h++)this.plotPlugins.push(a.plot.plugins[h].name);b.hooks.bindEvents.push(function(b,g){if(f.plotOptions=b.getOptions(),"boolean"==typeof f.plotOptions.tooltip&&(f.plotOptions.tooltipOpts.show=f.plotOptions.tooltip,f.plotOptions.tooltip=f.plotOptions.tooltipOpts,delete f.plotOptions.tooltipOpts),f.plotOptions.tooltip.show!==!1&&"undefined"!=typeof f.plotOptions.tooltip.show){f.tooltipOptions=f.plotOptions.tooltip,f.tooltipOptions.$compat?(f.wfunc="width",f.hfunc="height"):(f.wfunc="innerWidth",f.hfunc="innerHeight");f.getDomElement();a(b.getPlaceholder()).bind("plothover",e),f.tooltipOptions.clickTips&&a(b.getPlaceholder()).bind("plotclick",d),f.clickmode=!1,a(g).bind("mousemove",c)}}),b.hooks.shutdown.push(function(b,f){a(b.getPlaceholder()).unbind("plothover",e),a(b.getPlaceholder()).unbind("plotclick",d),b.removeTooltip(),a(f).unbind("mousemove",c)}),b.setTooltipPosition=function(b){var c=f.getDomElement(),d=c.outerWidth()+f.tooltipOptions.shifts.x,e=c.outerHeight()+f.tooltipOptions.shifts.y;b.x-a(window).scrollLeft()>a(window)[f.wfunc]()-d&&(b.x-=d,b.x=Math.max(b.x,0)),b.y-a(window).scrollTop()>a(window)[f.hfunc]()-e&&(b.y-=e),isNaN(b.x)?f.tipPosition.x=f.tipPosition.xPrev:(f.tipPosition.x=b.x,f.tipPosition.xPrev=b.x),isNaN(b.y)?f.tipPosition.y=f.tipPosition.yPrev:(f.tipPosition.y=b.y,f.tipPosition.yPrev=b.y)},b.showTooltip=function(a,c,d){var e=f.getDomElement(),g=f.stringFormat(f.tooltipOptions.content,a);""!==g&&(e.html(g),b.setTooltipPosition({x:f.tipPosition.x,y:f.tipPosition.y}),e.css({left:f.tipPosition.x+f.tooltipOptions.shifts.x,top:f.tipPosition.y+f.tooltipOptions.shifts.y}).show(),"function"==typeof f.tooltipOptions.onHover&&f.tooltipOptions.onHover(a,e))},b.hideTooltip=function(){f.getDomElement().hide().html("")},b.removeTooltip=function(){f.getDomElement().remove()}},c.prototype.getDomElement=function(){var b=a("<div>");return this.tooltipOptions&&this.tooltipOptions.cssClass&&(b=a("."+this.tooltipOptions.cssClass),0===b.length&&(b=a("<div />").addClass(this.tooltipOptions.cssClass),b.appendTo("body").hide().css({position:"absolute"}),this.tooltipOptions.defaultTheme&&b.css({background:"#fff","z-index":"1040",padding:"0.4em 0.6em","border-radius":"0.5em","font-size":"0.8em",border:"1px solid #111",display:"none","white-space":"nowrap"}))),b},c.prototype.stringFormat=function(a,b){var c,d,e,f,g,h=/%p\.{0,1}(\d{0,})/,i=/%s/,j=/%c/,k=/%lx/,l=/%ly/,m=/%x\.{0,1}(\d{0,})/,n=/%y\.{0,1}(\d{0,})/,o="%x",p="%y",q="%ct",r="%n";if("undefined"!=typeof b.series.threshold?(c=b.datapoint[0],d=b.datapoint[1],e=b.datapoint[2]):"undefined"!=typeof b.series.curvedLines?(c=b.datapoint[0],d=b.datapoint[1]):"undefined"!=typeof b.series.lines&&b.series.lines.steps?(c=b.series.datapoints.points[2*b.dataIndex],d=b.series.datapoints.points[2*b.dataIndex+1],e=""):(c=b.series.data[b.dataIndex][0],d=b.series.data[b.dataIndex][1],e=b.series.data[b.dataIndex][2]),null===b.series.label&&b.series.originSeries&&(b.series.label=b.series.originSeries.label),"function"==typeof a&&(a=a(b.series.label,c,d,b)),"boolean"==typeof a&&!a)return"";if(e&&(a=a.replace(q,e)),"undefined"!=typeof b.series.percent?f=b.series.percent:"undefined"!=typeof b.series.percents&&(f=b.series.percents[b.dataIndex]),"number"==typeof f&&(a=this.adjustValPrecision(h,a,f)),b.series.hasOwnProperty("pie")&&"undefined"!=typeof b.series.data[0][1]&&(g=b.series.data[0][1]),"number"==typeof g&&(a=a.replace(r,g)),a="undefined"!=typeof b.series.label?a.replace(i,b.series.label):a.replace(i,""),a="undefined"!=typeof b.series.color?a.replace(j,b.series.color):a.replace(j,""),a=this.hasAxisLabel("xaxis",b)?a.replace(k,b.series.xaxis.options.axisLabel):a.replace(k,""),a=this.hasAxisLabel("yaxis",b)?a.replace(l,b.series.yaxis.options.axisLabel):a.replace(l,""),this.isTimeMode("xaxis",b)&&this.isXDateFormat(b)&&(a=a.replace(m,this.timestampToDate(c,this.tooltipOptions.xDateFormat,b.series.xaxis.options))),this.isTimeMode("yaxis",b)&&this.isYDateFormat(b)&&(a=a.replace(n,this.timestampToDate(d,this.tooltipOptions.yDateFormat,b.series.yaxis.options))),"number"==typeof c&&(a=this.adjustValPrecision(m,a,c)),"number"==typeof d&&(a=this.adjustValPrecision(n,a,d)),"undefined"!=typeof b.series.xaxis.ticks){var s;s=this.hasRotatedXAxisTicks(b)?"rotatedTicks":"ticks";var t=b.dataIndex+b.seriesIndex;for(var u in b.series.xaxis[s])if(b.series.xaxis[s].hasOwnProperty(t)&&!this.isTimeMode("xaxis",b)){var v=this.isCategoriesMode("xaxis",b)?b.series.xaxis[s][t].label:b.series.xaxis[s][t].v;v===c&&(a=a.replace(m,b.series.xaxis[s][t].label.replace(/\$/g,"$$$$")))}}if("undefined"!=typeof b.series.yaxis.ticks)for(var w in b.series.yaxis.ticks)if(b.series.yaxis.ticks.hasOwnProperty(w)){var x=this.isCategoriesMode("yaxis",b)?b.series.yaxis.ticks[w].label:b.series.yaxis.ticks[w].v;x===d&&(a=a.replace(n,b.series.yaxis.ticks[w].label.replace(/\$/g,"$$$$")))}return"undefined"!=typeof b.series.xaxis.tickFormatter&&(a=a.replace(o,b.series.xaxis.tickFormatter(c,b.series.xaxis).replace(/\$/g,"$$"))),"undefined"!=typeof b.series.yaxis.tickFormatter&&(a=a.replace(p,b.series.yaxis.tickFormatter(d,b.series.yaxis).replace(/\$/g,"$$"))),a},c.prototype.isTimeMode=function(a,b){return"undefined"!=typeof b.series[a].options.mode&&"time"===b.series[a].options.mode},c.prototype.isXDateFormat=function(a){return"undefined"!=typeof this.tooltipOptions.xDateFormat&&null!==this.tooltipOptions.xDateFormat},c.prototype.isYDateFormat=function(a){return"undefined"!=typeof this.tooltipOptions.yDateFormat&&null!==this.tooltipOptions.yDateFormat},c.prototype.isCategoriesMode=function(a,b){return"undefined"!=typeof b.series[a].options.mode&&"categories"===b.series[a].options.mode},c.prototype.timestampToDate=function(b,c,d){var e=a.plot.dateGenerator(b,d);return a.plot.formatDate(e,c,this.tooltipOptions.monthNames,this.tooltipOptions.dayNames)},c.prototype.adjustValPrecision=function(a,b,c){var d,e=b.match(a);return null!==e&&""!==RegExp.$1&&(d=RegExp.$1,c=c.toFixed(d),b=b.replace(a,c)),b},c.prototype.hasAxisLabel=function(b,c){return-1!==a.inArray("axisLabels",this.plotPlugins)&&"undefined"!=typeof c.series[b].options.axisLabel&&c.series[b].options.axisLabel.length>0},c.prototype.hasRotatedXAxisTicks=function(b){return-1!==a.inArray("tickRotor",this.plotPlugins)&&"undefined"!=typeof b.series.xaxis.rotatedTicks};var d=function(a){new c(a)};a.plot.plugins.push({init:d,options:b,name:"tooltip",version:"0.8.5"})}(jQuery);