root / hci / trunk / eneraptor-web-app / web-app / js / flot / jquery.flot.js @ 11
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/* Javascript plotting library for jQuery, v. 0.6.
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*
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* Released under the MIT license by IOLA, December 2007.
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*
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*/
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// first an inline dependency, jquery.colorhelpers.js, we inline it here
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// for convenience
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/* Plugin for jQuery for working with colors.
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*
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* Version 1.0.
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*
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* Inspiration from jQuery color animation plugin by John Resig.
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*
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* Released under the MIT license by Ole Laursen, October 2009.
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*
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* Examples:
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*
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* $.color.parse("#fff").scale('rgb', 0.25).add('a', -0.5).toString()
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* var c = $.color.extract($("#mydiv"), 'background-color');
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* console.log(c.r, c.g, c.b, c.a);
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* $.color.make(100, 50, 25, 0.4).toString() // returns "rgba(100,50,25,0.4)"
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*
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* Note that .scale() and .add() work in-place instead of returning
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* new objects.
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*/
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(function(){jQuery.color={};jQuery.color.make=function(E,D,B,C){var F={};F.r=E||0;F.g=D||0;F.b=B||0;F.a=C!=null?C:1;F.add=function(I,H){for(var G=0;G<I.length;++G){F[I.charAt(G)]+=H}return F.normalize()};F.scale=function(I,H){for(var G=0;G<I.length;++G){F[I.charAt(G)]*=H}return F.normalize()};F.toString=function(){if(F.a>=1){return"rgb("+[F.r,F.g,F.b].join(",")+")"}else{return"rgba("+[F.r,F.g,F.b,F.a].join(",")+")"}};F.normalize=function(){function G(I,J,H){return J<I?I:(J>H?H:J)}F.r=G(0,parseInt(F.r),255);F.g=G(0,parseInt(F.g),255);F.b=G(0,parseInt(F.b),255);F.a=G(0,F.a,1);return F};F.clone=function(){return jQuery.color.make(F.r,F.b,F.g,F.a)};return F.normalize()};jQuery.color.extract=function(C,B){var D;do{D=C.css(B).toLowerCase();if(D!=""&&D!="transparent"){break}C=C.parent()}while(!jQuery.nodeName(C.get(0),"body"));if(D=="rgba(0, 0, 0, 0)"){D="transparent"}return jQuery.color.parse(D)};jQuery.color.parse=function(E){var D,B=jQuery.color.make;if(D=/rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(E)){return B(parseInt(D[1],10),parseInt(D[2],10),parseInt(D[3],10))}if(D=/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(E)){return B(parseInt(D[1],10),parseInt(D[2],10),parseInt(D[3],10),parseFloat(D[4]))}if(D=/rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(E)){return B(parseFloat(D[1])*2.55,parseFloat(D[2])*2.55,parseFloat(D[3])*2.55)}if(D=/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(E)){return B(parseFloat(D[1])*2.55,parseFloat(D[2])*2.55,parseFloat(D[3])*2.55,parseFloat(D[4]))}if(D=/#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(E)){return B(parseInt(D[1],16),parseInt(D[2],16),parseInt(D[3],16))}if(D=/#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(E)){return B(parseInt(D[1]+D[1],16),parseInt(D[2]+D[2],16),parseInt(D[3]+D[3],16))}var C=jQuery.trim(E).toLowerCase();if(C=="transparent"){return B(255,255,255,0)}else{D=A[C];return B(D[0],D[1],D[2])}};var A={aqua:[0,255,255],azure:[240,255,255],beige:[245,245,220],black:[0,0,0],blue:[0,0,255],brown:[165,42,42],cyan:[0,255,255],darkblue:[0,0,139],darkcyan:[0,139,139],darkgrey:[169,169,169],darkgreen:[0,100,0],darkkhaki:[189,183,107],darkmagenta:[139,0,139],darkolivegreen:[85,107,47],darkorange:[255,140,0],darkorchid:[153,50,204],darkred:[139,0,0],darksalmon:[233,150,122],darkviolet:[148,0,211],fuchsia:[255,0,255],gold:[255,215,0],green:[0,128,0],indigo:[75,0,130],khaki:[240,230,140],lightblue:[173,216,230],lightcyan:[224,255,255],lightgreen:[144,238,144],lightgrey:[211,211,211],lightpink:[255,182,193],lightyellow:[255,255,224],lime:[0,255,0],magenta:[255,0,255],maroon:[128,0,0],navy:[0,0,128],olive:[128,128,0],orange:[255,165,0],pink:[255,192,203],purple:[128,0,128],violet:[128,0,128],red:[255,0,0],silver:[192,192,192],white:[255,255,255],yellow:[255,255,0]}})(); |
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// the actual Flot code
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(function($) { |
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function Plot(placeholder, data_, options_, plugins) { |
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// data is on the form:
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// [ series1, series2 ... ]
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// where series is either just the data as [ [x1, y1], [x2, y2], ... ]
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// or { data: [ [x1, y1], [x2, y2], ... ], label: "some label", ... }
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var series = [],
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options = {
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// the color theme used for graphs
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colors: ["#edc240", "#afd8f8", "#cb4b4b", "#4da74d", "#9440ed"], |
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legend: {
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show: true, |
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noColumns: 1, // number of colums in legend table |
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labelFormatter: null, // fn: string -> string |
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labelBoxBorderColor: "#ccc", // border color for the little label boxes |
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container: null, // container (as jQuery object) to put legend in, null means default on top of graph |
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position: "ne", // position of default legend container within plot |
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margin: 5, // distance from grid edge to default legend container within plot |
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backgroundColor: null, // null means auto-detect |
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backgroundOpacity: 0.85 // set to 0 to avoid background |
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}, |
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xaxis: {
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mode: null, // null or "time" |
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transform: null, // null or f: number -> number to transform axis |
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inverseTransform: null, // if transform is set, this should be the inverse function |
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min: null, // min. value to show, null means set automatically |
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max: null, // max. value to show, null means set automatically |
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autoscaleMargin: null, // margin in % to add if auto-setting min/max |
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ticks: null, // either [1, 3] or [[1, "a"], 3] or (fn: axis info -> ticks) or app. number of ticks for auto-ticks |
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tickFormatter: null, // fn: number -> string |
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labelWidth: null, // size of tick labels in pixels |
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labelHeight: null, |
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// mode specific options
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tickDecimals: null, // no. of decimals, null means auto |
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tickSize: null, // number or [number, "unit"] |
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minTickSize: null, // number or [number, "unit"] |
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monthNames: null, // list of names of months |
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timeformat: null, // format string to use |
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twelveHourClock: false // 12 or 24 time in time mode |
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}, |
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yaxis: {
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autoscaleMargin: 0.02 |
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}, |
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x2axis: {
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autoscaleMargin: null |
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}, |
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y2axis: {
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autoscaleMargin: 0.02 |
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}, |
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series: {
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points: {
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show: false, |
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radius: 3, |
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lineWidth: 2, // in pixels |
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fill: true, |
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fillColor: "#ffffff" |
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}, |
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lines: {
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// we don't put in show: false so we can see
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// whether lines were actively disabled
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lineWidth: 2, // in pixels |
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fill: false, |
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fillColor: null, |
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steps: false |
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}, |
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bars: {
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show: false, |
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lineWidth: 2, // in pixels |
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barWidth: 1, // in units of the x axis |
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fill: true, |
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fillColor: null, |
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align: "left", // or "center" |
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horizontal: false // when horizontal, left is now top |
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}, |
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shadowSize: 3 |
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}, |
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grid: {
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show: true, |
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aboveData: false, |
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color: "#545454", // primary color used for outline and labels |
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backgroundColor: null, // null for transparent, else color |
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tickColor: "rgba(0,0,0,0.15)", // color used for the ticks |
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labelMargin: 5, // in pixels |
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borderWidth: 2, // in pixels |
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borderColor: null, // set if different from the grid color |
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markings: null, // array of ranges or fn: axes -> array of ranges |
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markingsColor: "#f4f4f4", |
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markingsLineWidth: 2, |
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// interactive stuff
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clickable: false, |
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hoverable: false, |
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autoHighlight: true, // highlight in case mouse is near |
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mouseActiveRadius: 10 // how far the mouse can be away to activate an item |
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}, |
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hooks: {}
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}, |
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canvas = null, // the canvas for the plot itself |
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overlay = null, // canvas for interactive stuff on top of plot |
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eventHolder = null, // jQuery object that events should be bound to |
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ctx = null, octx = null, |
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axes = { xaxis: {}, yaxis: {}, x2axis: {}, y2axis: {} },
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plotOffset = { left: 0, right: 0, top: 0, bottom: 0},
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canvasWidth = 0, canvasHeight = 0, |
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plotWidth = 0, plotHeight = 0, |
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hooks = {
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processOptions: [],
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processRawData: [],
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processDatapoints: [],
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draw: [],
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bindEvents: [],
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drawOverlay: []
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}, |
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plot = this;
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// public functions
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plot.setData = setData; |
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plot.setupGrid = setupGrid; |
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plot.draw = draw; |
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plot.getPlaceholder = function() { return placeholder; }; |
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plot.getCanvas = function() { return canvas; }; |
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plot.getPlotOffset = function() { return plotOffset; }; |
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plot.width = function () { return plotWidth; }; |
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plot.height = function () { return plotHeight; }; |
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plot.offset = function () { |
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var o = eventHolder.offset();
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o.left += plotOffset.left; |
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o.top += plotOffset.top; |
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return o;
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}; |
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plot.getData = function() { return series; }; |
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plot.getAxes = function() { return axes; }; |
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plot.getOptions = function() { return options; }; |
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plot.highlight = highlight; |
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plot.unhighlight = unhighlight; |
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plot.triggerRedrawOverlay = triggerRedrawOverlay; |
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plot.pointOffset = function(point) { |
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return { left: parseInt(axisSpecToRealAxis(point, "xaxis").p2c(+point.x) + plotOffset.left), |
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top: parseInt(axisSpecToRealAxis(point, "yaxis").p2c(+point.y) + plotOffset.top) }; |
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}; |
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// public attributes
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plot.hooks = hooks; |
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// initialize
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initPlugins(plot); |
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parseOptions(options_); |
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constructCanvas(); |
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setData(data_); |
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setupGrid(); |
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draw(); |
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bindEvents(); |
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function executeHooks(hook, args) { |
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args = [plot].concat(args); |
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for (var i = 0; i < hook.length; ++i) |
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hook[i].apply(this, args);
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} |
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function initPlugins() { |
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for (var i = 0; i < plugins.length; ++i) { |
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var p = plugins[i];
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p.init(plot); |
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if (p.options)
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$.extend(true, options, p.options); |
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} |
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} |
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function parseOptions(opts) { |
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$.extend(true, options, opts); |
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if (options.grid.borderColor == null) |
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options.grid.borderColor = options.grid.color; |
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// backwards compatibility, to be removed in future
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if (options.xaxis.noTicks && options.xaxis.ticks == null) |
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options.xaxis.ticks = options.xaxis.noTicks; |
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if (options.yaxis.noTicks && options.yaxis.ticks == null) |
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options.yaxis.ticks = options.yaxis.noTicks; |
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if (options.grid.coloredAreas)
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options.grid.markings = options.grid.coloredAreas; |
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if (options.grid.coloredAreasColor)
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options.grid.markingsColor = options.grid.coloredAreasColor; |
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if (options.lines)
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$.extend(true, options.series.lines, options.lines); |
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if (options.points)
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$.extend(true, options.series.points, options.points); |
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if (options.bars)
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$.extend(true, options.series.bars, options.bars); |
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if (options.shadowSize)
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options.series.shadowSize = options.shadowSize; |
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for (var n in hooks) |
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if (options.hooks[n] && options.hooks[n].length)
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hooks[n] = hooks[n].concat(options.hooks[n]); |
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executeHooks(hooks.processOptions, [options]); |
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} |
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function setData(d) { |
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series = parseData(d); |
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fillInSeriesOptions(); |
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processData(); |
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} |
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function parseData(d) { |
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var res = [];
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for (var i = 0; i < d.length; ++i) { |
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var s = $.extend(true, {}, options.series); |
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if (d[i].data) {
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s.data = d[i].data; // move the data instead of deep-copy
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delete d[i].data;
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$.extend(true, s, d[i]); |
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d[i].data = s.data; |
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} |
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else
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s.data = d[i]; |
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res.push(s); |
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} |
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return res;
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} |
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function axisSpecToRealAxis(obj, attr) { |
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var a = obj[attr];
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if (!a || a == 1) |
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return axes[attr];
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if (typeof a == "number") |
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return axes[attr.charAt(0) + a + attr.slice(1)]; |
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return a; // assume it's OK |
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} |
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function fillInSeriesOptions() { |
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var i;
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// collect what we already got of colors
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var neededColors = series.length,
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usedColors = [], |
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assignedColors = []; |
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for (i = 0; i < series.length; ++i) { |
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var sc = series[i].color;
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if (sc != null) { |
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--neededColors; |
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if (typeof sc == "number") |
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assignedColors.push(sc); |
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else
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usedColors.push($.color.parse(series[i].color));
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} |
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} |
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// we might need to generate more colors if higher indices
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// are assigned
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for (i = 0; i < assignedColors.length; ++i) { |
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neededColors = Math.max(neededColors, assignedColors[i] + 1);
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} |
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// produce colors as needed
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var colors = [], variation = 0; |
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i = 0;
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while (colors.length < neededColors) {
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var c;
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if (options.colors.length == i) // check degenerate case |
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c = $.color.make(100, 100, 100); |
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else
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c = $.color.parse(options.colors[i]);
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// vary color if needed
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var sign = variation % 2 == 1 ? -1 : 1; |
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c.scale('rgb', 1 + sign * Math.ceil(variation / 2) * 0.2) |
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// FIXME: if we're getting to close to something else,
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// we should probably skip this one
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colors.push(c); |
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++i; |
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if (i >= options.colors.length) {
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i = 0;
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++variation; |
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} |
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} |
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// fill in the options
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var colori = 0, s; |
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for (i = 0; i < series.length; ++i) { |
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s = series[i]; |
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// assign colors
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if (s.color == null) { |
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s.color = colors[colori].toString(); |
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++colori; |
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} |
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else if (typeof s.color == "number") |
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s.color = colors[s.color].toString(); |
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// turn on lines automatically in case nothing is set
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if (s.lines.show == null) { |
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var v, show = true; |
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for (v in s) |
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if (s[v].show) {
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show = false;
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break;
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} |
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if (show)
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s.lines.show = true;
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} |
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// setup axes
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s.xaxis = axisSpecToRealAxis(s, "xaxis");
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s.yaxis = axisSpecToRealAxis(s, "yaxis");
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} |
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} |
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function processData() { |
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var topSentry = Number.POSITIVE_INFINITY,
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bottomSentry = Number.NEGATIVE_INFINITY, |
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i, j, k, m, length, |
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s, points, ps, x, y, axis, val, f, p; |
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for (axis in axes) { |
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axes[axis].datamin = topSentry; |
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axes[axis].datamax = bottomSentry; |
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axes[axis].used = false;
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} |
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function updateAxis(axis, min, max) { |
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if (min < axis.datamin)
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axis.datamin = min; |
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if (max > axis.datamax)
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axis.datamax = max; |
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} |
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for (i = 0; i < series.length; ++i) { |
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s = series[i]; |
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s.datapoints = { points: [] };
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executeHooks(hooks.processRawData, [ s, s.data, s.datapoints ]); |
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} |
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// first pass: clean and copy data
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for (i = 0; i < series.length; ++i) { |
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s = series[i]; |
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var data = s.data, format = s.datapoints.format;
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if (!format) {
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format = []; |
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// find out how to copy
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format.push({ x: true, number: true, required: true });
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format.push({ y: true, number: true, required: true });
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if (s.bars.show)
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format.push({ y: true, number: true, required: false, defaultValue: 0 });
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s.datapoints.format = format; |
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} |
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if (s.datapoints.pointsize != null) |
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continue; // already filled in |
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if (s.datapoints.pointsize == null) |
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s.datapoints.pointsize = format.length; |
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ps = s.datapoints.pointsize; |
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points = s.datapoints.points; |
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|
| 400 |
insertSteps = s.lines.show && s.lines.steps; |
| 401 |
s.xaxis.used = s.yaxis.used = true;
|
| 402 |
|
| 403 |
for (j = k = 0; j < data.length; ++j, k += ps) { |
| 404 |
p = data[j]; |
| 405 |
|
| 406 |
var nullify = p == null; |
| 407 |
if (!nullify) {
|
| 408 |
for (m = 0; m < ps; ++m) { |
| 409 |
val = p[m]; |
| 410 |
f = format[m]; |
| 411 |
|
| 412 |
if (f) {
|
| 413 |
if (f.number && val != null) { |
| 414 |
val = +val; // convert to number
|
| 415 |
if (isNaN(val))
|
| 416 |
val = null;
|
| 417 |
} |
| 418 |
|
| 419 |
if (val == null) { |
| 420 |
if (f.required)
|
| 421 |
nullify = true;
|
| 422 |
|
| 423 |
if (f.defaultValue != null) |
| 424 |
val = f.defaultValue; |
| 425 |
} |
| 426 |
} |
| 427 |
|
| 428 |
points[k + m] = val; |
| 429 |
} |
| 430 |
} |
| 431 |
|
| 432 |
if (nullify) {
|
| 433 |
for (m = 0; m < ps; ++m) { |
| 434 |
val = points[k + m]; |
| 435 |
if (val != null) { |
| 436 |
f = format[m]; |
| 437 |
// extract min/max info
|
| 438 |
if (f.x)
|
| 439 |
updateAxis(s.xaxis, val, val); |
| 440 |
if (f.y)
|
| 441 |
updateAxis(s.yaxis, val, val); |
| 442 |
} |
| 443 |
points[k + m] = null;
|
| 444 |
} |
| 445 |
} |
| 446 |
else {
|
| 447 |
// a little bit of line specific stuff that
|
| 448 |
// perhaps shouldn't be here, but lacking
|
| 449 |
// better means...
|
| 450 |
if (insertSteps && k > 0 |
| 451 |
&& points[k - ps] != null
|
| 452 |
&& points[k - ps] != points[k] |
| 453 |
&& points[k - ps + 1] != points[k + 1]) { |
| 454 |
// copy the point to make room for a middle point
|
| 455 |
for (m = 0; m < ps; ++m) |
| 456 |
points[k + ps + m] = points[k + m]; |
| 457 |
|
| 458 |
// middle point has same y
|
| 459 |
points[k + 1] = points[k - ps + 1]; |
| 460 |
|
| 461 |
// we've added a point, better reflect that
|
| 462 |
k += ps; |
| 463 |
} |
| 464 |
} |
| 465 |
} |
| 466 |
} |
| 467 |
|
| 468 |
// give the hooks a chance to run
|
| 469 |
for (i = 0; i < series.length; ++i) { |
| 470 |
s = series[i]; |
| 471 |
|
| 472 |
executeHooks(hooks.processDatapoints, [ s, s.datapoints]); |
| 473 |
} |
| 474 |
|
| 475 |
// second pass: find datamax/datamin for auto-scaling
|
| 476 |
for (i = 0; i < series.length; ++i) { |
| 477 |
s = series[i]; |
| 478 |
points = s.datapoints.points, |
| 479 |
ps = s.datapoints.pointsize; |
| 480 |
|
| 481 |
var xmin = topSentry, ymin = topSentry,
|
| 482 |
xmax = bottomSentry, ymax = bottomSentry; |
| 483 |
|
| 484 |
for (j = 0; j < points.length; j += ps) { |
| 485 |
if (points[j] == null) |
| 486 |
continue;
|
| 487 |
|
| 488 |
for (m = 0; m < ps; ++m) { |
| 489 |
val = points[j + m]; |
| 490 |
f = format[m]; |
| 491 |
if (!f)
|
| 492 |
continue;
|
| 493 |
|
| 494 |
if (f.x) {
|
| 495 |
if (val < xmin)
|
| 496 |
xmin = val; |
| 497 |
if (val > xmax)
|
| 498 |
xmax = val; |
| 499 |
} |
| 500 |
if (f.y) {
|
| 501 |
if (val < ymin)
|
| 502 |
ymin = val; |
| 503 |
if (val > ymax)
|
| 504 |
ymax = val; |
| 505 |
} |
| 506 |
} |
| 507 |
} |
| 508 |
|
| 509 |
if (s.bars.show) {
|
| 510 |
// make sure we got room for the bar on the dancing floor
|
| 511 |
var delta = s.bars.align == "left" ? 0 : -s.bars.barWidth/2; |
| 512 |
if (s.bars.horizontal) {
|
| 513 |
ymin += delta; |
| 514 |
ymax += delta + s.bars.barWidth; |
| 515 |
} |
| 516 |
else {
|
| 517 |
xmin += delta; |
| 518 |
xmax += delta + s.bars.barWidth; |
| 519 |
} |
| 520 |
} |
| 521 |
|
| 522 |
updateAxis(s.xaxis, xmin, xmax); |
| 523 |
updateAxis(s.yaxis, ymin, ymax); |
| 524 |
} |
| 525 |
|
| 526 |
for (axis in axes) { |
| 527 |
if (axes[axis].datamin == topSentry)
|
| 528 |
axes[axis].datamin = null;
|
| 529 |
if (axes[axis].datamax == bottomSentry)
|
| 530 |
axes[axis].datamax = null;
|
| 531 |
} |
| 532 |
} |
| 533 |
|
| 534 |
function constructCanvas() { |
| 535 |
function makeCanvas(width, height) { |
| 536 |
var c = document.createElement('canvas'); |
| 537 |
c.width = width; |
| 538 |
c.height = height; |
| 539 |
if ($.browser.msie) // excanvas hack |
| 540 |
c = window.G_vmlCanvasManager.initElement(c); |
| 541 |
return c;
|
| 542 |
} |
| 543 |
|
| 544 |
canvasWidth = placeholder.width(); |
| 545 |
canvasHeight = placeholder.height(); |
| 546 |
placeholder.html(""); // clear placeholder |
| 547 |
if (placeholder.css("position") == 'static') |
| 548 |
placeholder.css("position", "relative"); // for positioning labels and overlay |
| 549 |
|
| 550 |
if (canvasWidth <= 0 || canvasHeight <= 0) |
| 551 |
throw "Invalid dimensions for plot, width = " + canvasWidth + ", height = " + canvasHeight; |
| 552 |
|
| 553 |
if ($.browser.msie) // excanvas hack |
| 554 |
window.G_vmlCanvasManager.init_(document); // make sure everything is setup
|
| 555 |
|
| 556 |
// the canvas
|
| 557 |
canvas = $(makeCanvas(canvasWidth, canvasHeight)).appendTo(placeholder).get(0); |
| 558 |
ctx = canvas.getContext("2d");
|
| 559 |
|
| 560 |
// overlay canvas for interactive features
|
| 561 |
overlay = $(makeCanvas(canvasWidth, canvasHeight)).css({ position: 'absolute', left: 0, top: 0 }).appendTo(placeholder).get(0); |
| 562 |
octx = overlay.getContext("2d");
|
| 563 |
octx.stroke(); |
| 564 |
} |
| 565 |
|
| 566 |
function bindEvents() { |
| 567 |
// we include the canvas in the event holder too, because IE 7
|
| 568 |
// sometimes has trouble with the stacking order
|
| 569 |
eventHolder = $([overlay, canvas]);
|
| 570 |
|
| 571 |
// bind events
|
| 572 |
if (options.grid.hoverable)
|
| 573 |
eventHolder.mousemove(onMouseMove); |
| 574 |
|
| 575 |
if (options.grid.clickable)
|
| 576 |
eventHolder.click(onClick); |
| 577 |
|
| 578 |
executeHooks(hooks.bindEvents, [eventHolder]); |
| 579 |
} |
| 580 |
|
| 581 |
function setupGrid() { |
| 582 |
function setTransformationHelpers(axis, o) { |
| 583 |
function identity(x) { return x; } |
| 584 |
|
| 585 |
var s, m, t = o.transform || identity,
|
| 586 |
it = o.inverseTransform; |
| 587 |
|
| 588 |
// add transformation helpers
|
| 589 |
if (axis == axes.xaxis || axis == axes.x2axis) {
|
| 590 |
// precompute how much the axis is scaling a point
|
| 591 |
// in canvas space
|
| 592 |
s = axis.scale = plotWidth / (t(axis.max) - t(axis.min)); |
| 593 |
m = t(axis.min); |
| 594 |
|
| 595 |
// data point to canvas coordinate
|
| 596 |
if (t == identity) // slight optimization |
| 597 |
axis.p2c = function (p) { return (p - m) * s; }; |
| 598 |
else
|
| 599 |
axis.p2c = function (p) { return (t(p) - m) * s; }; |
| 600 |
// canvas coordinate to data point
|
| 601 |
if (!it)
|
| 602 |
axis.c2p = function (c) { return m + c / s; }; |
| 603 |
else
|
| 604 |
axis.c2p = function (c) { return it(m + c / s); }; |
| 605 |
} |
| 606 |
else {
|
| 607 |
s = axis.scale = plotHeight / (t(axis.max) - t(axis.min)); |
| 608 |
m = t(axis.max); |
| 609 |
|
| 610 |
if (t == identity)
|
| 611 |
axis.p2c = function (p) { return (m - p) * s; }; |
| 612 |
else
|
| 613 |
axis.p2c = function (p) { return (m - t(p)) * s; }; |
| 614 |
if (!it)
|
| 615 |
axis.c2p = function (c) { return m - c / s; }; |
| 616 |
else
|
| 617 |
axis.c2p = function (c) { return it(m - c / s); }; |
| 618 |
} |
| 619 |
} |
| 620 |
|
| 621 |
function measureLabels(axis, axisOptions) { |
| 622 |
var i, labels = [], l;
|
| 623 |
|
| 624 |
axis.labelWidth = axisOptions.labelWidth; |
| 625 |
axis.labelHeight = axisOptions.labelHeight; |
| 626 |
|
| 627 |
if (axis == axes.xaxis || axis == axes.x2axis) {
|
| 628 |
// to avoid measuring the widths of the labels, we
|
| 629 |
// construct fixed-size boxes and put the labels inside
|
| 630 |
// them, we don't need the exact figures and the
|
| 631 |
// fixed-size box content is easy to center
|
| 632 |
if (axis.labelWidth == null) |
| 633 |
axis.labelWidth = canvasWidth / (axis.ticks.length > 0 ? axis.ticks.length : 1); |
| 634 |
|
| 635 |
// measure x label heights
|
| 636 |
if (axis.labelHeight == null) { |
| 637 |
labels = []; |
| 638 |
for (i = 0; i < axis.ticks.length; ++i) { |
| 639 |
l = axis.ticks[i].label; |
| 640 |
if (l)
|
| 641 |
labels.push('<div class="tickLabel" style="float:left;width:' + axis.labelWidth + 'px">' + l + '</div>'); |
| 642 |
} |
| 643 |
|
| 644 |
if (labels.length > 0) { |
| 645 |
var dummyDiv = $('<div style="position:absolute;top:-10000px;width:10000px;font-size:smaller">' |
| 646 |
+ labels.join("") + '<div style="clear:left"></div></div>').appendTo(placeholder); |
| 647 |
axis.labelHeight = dummyDiv.height(); |
| 648 |
dummyDiv.remove(); |
| 649 |
} |
| 650 |
} |
| 651 |
} |
| 652 |
else if (axis.labelWidth == null || axis.labelHeight == null) { |
| 653 |
// calculate y label dimensions
|
| 654 |
for (i = 0; i < axis.ticks.length; ++i) { |
| 655 |
l = axis.ticks[i].label; |
| 656 |
if (l)
|
| 657 |
labels.push('<div class="tickLabel">' + l + '</div>'); |
| 658 |
} |
| 659 |
|
| 660 |
if (labels.length > 0) { |
| 661 |
var dummyDiv = $('<div style="position:absolute;top:-10000px;font-size:smaller">' |
| 662 |
+ labels.join("") + '</div>').appendTo(placeholder); |
| 663 |
if (axis.labelWidth == null) |
| 664 |
axis.labelWidth = dummyDiv.width(); |
| 665 |
if (axis.labelHeight == null) |
| 666 |
axis.labelHeight = dummyDiv.find("div").height();
|
| 667 |
dummyDiv.remove(); |
| 668 |
} |
| 669 |
|
| 670 |
} |
| 671 |
|
| 672 |
if (axis.labelWidth == null) |
| 673 |
axis.labelWidth = 0;
|
| 674 |
if (axis.labelHeight == null) |
| 675 |
axis.labelHeight = 0;
|
| 676 |
} |
| 677 |
|
| 678 |
function setGridSpacing() { |
| 679 |
// get the most space needed around the grid for things
|
| 680 |
// that may stick out
|
| 681 |
var maxOutset = options.grid.borderWidth;
|
| 682 |
for (i = 0; i < series.length; ++i) |
| 683 |
maxOutset = Math.max(maxOutset, 2 * (series[i].points.radius + series[i].points.lineWidth/2)); |
| 684 |
|
| 685 |
plotOffset.left = plotOffset.right = plotOffset.top = plotOffset.bottom = maxOutset; |
| 686 |
|
| 687 |
var margin = options.grid.labelMargin + options.grid.borderWidth;
|
| 688 |
|
| 689 |
if (axes.xaxis.labelHeight > 0) |
| 690 |
plotOffset.bottom = Math.max(maxOutset, axes.xaxis.labelHeight + margin); |
| 691 |
if (axes.yaxis.labelWidth > 0) |
| 692 |
plotOffset.left = Math.max(maxOutset, axes.yaxis.labelWidth + margin); |
| 693 |
if (axes.x2axis.labelHeight > 0) |
| 694 |
plotOffset.top = Math.max(maxOutset, axes.x2axis.labelHeight + margin); |
| 695 |
if (axes.y2axis.labelWidth > 0) |
| 696 |
plotOffset.right = Math.max(maxOutset, axes.y2axis.labelWidth + margin); |
| 697 |
|
| 698 |
plotWidth = canvasWidth - plotOffset.left - plotOffset.right; |
| 699 |
plotHeight = canvasHeight - plotOffset.bottom - plotOffset.top; |
| 700 |
} |
| 701 |
|
| 702 |
var axis;
|
| 703 |
for (axis in axes) |
| 704 |
setRange(axes[axis], options[axis]); |
| 705 |
|
| 706 |
if (options.grid.show) {
|
| 707 |
for (axis in axes) { |
| 708 |
prepareTickGeneration(axes[axis], options[axis]); |
| 709 |
setTicks(axes[axis], options[axis]); |
| 710 |
measureLabels(axes[axis], options[axis]); |
| 711 |
} |
| 712 |
|
| 713 |
setGridSpacing(); |
| 714 |
} |
| 715 |
else {
|
| 716 |
plotOffset.left = plotOffset.right = plotOffset.top = plotOffset.bottom = 0;
|
| 717 |
plotWidth = canvasWidth; |
| 718 |
plotHeight = canvasHeight; |
| 719 |
} |
| 720 |
|
| 721 |
for (axis in axes) |
| 722 |
setTransformationHelpers(axes[axis], options[axis]); |
| 723 |
|
| 724 |
if (options.grid.show)
|
| 725 |
insertLabels(); |
| 726 |
|
| 727 |
insertLegend(); |
| 728 |
} |
| 729 |
|
| 730 |
function setRange(axis, axisOptions) { |
| 731 |
var min = +(axisOptions.min != null ? axisOptions.min : axis.datamin), |
| 732 |
max = +(axisOptions.max != null ? axisOptions.max : axis.datamax),
|
| 733 |
delta = max - min; |
| 734 |
|
| 735 |
if (delta == 0.0) { |
| 736 |
// degenerate case
|
| 737 |
var widen = max == 0 ? 1 : 0.01; |
| 738 |
|
| 739 |
if (axisOptions.min == null) |
| 740 |
min -= widen; |
| 741 |
// alway widen max if we couldn't widen min to ensure we
|
| 742 |
// don't fall into min == max which doesn't work
|
| 743 |
if (axisOptions.max == null || axisOptions.min != null) |
| 744 |
max += widen; |
| 745 |
} |
| 746 |
else {
|
| 747 |
// consider autoscaling
|
| 748 |
var margin = axisOptions.autoscaleMargin;
|
| 749 |
if (margin != null) { |
| 750 |
if (axisOptions.min == null) { |
| 751 |
min -= delta * margin; |
| 752 |
// make sure we don't go below zero if all values
|
| 753 |
// are positive
|
| 754 |
if (min < 0 && axis.datamin != null && axis.datamin >= 0) |
| 755 |
min = 0;
|
| 756 |
} |
| 757 |
if (axisOptions.max == null) { |
| 758 |
max += delta * margin; |
| 759 |
if (max > 0 && axis.datamax != null && axis.datamax <= 0) |
| 760 |
max = 0;
|
| 761 |
} |
| 762 |
} |
| 763 |
} |
| 764 |
axis.min = min; |
| 765 |
axis.max = max; |
| 766 |
} |
| 767 |
|
| 768 |
function prepareTickGeneration(axis, axisOptions) { |
| 769 |
// estimate number of ticks
|
| 770 |
var noTicks;
|
| 771 |
if (typeof axisOptions.ticks == "number" && axisOptions.ticks > 0) |
| 772 |
noTicks = axisOptions.ticks; |
| 773 |
else if (axis == axes.xaxis || axis == axes.x2axis) |
| 774 |
// heuristic based on the model a*sqrt(x) fitted to
|
| 775 |
// some reasonable data points
|
| 776 |
noTicks = 0.3 * Math.sqrt(canvasWidth);
|
| 777 |
else
|
| 778 |
noTicks = 0.3 * Math.sqrt(canvasHeight);
|
| 779 |
|
| 780 |
var delta = (axis.max - axis.min) / noTicks,
|
| 781 |
size, generator, unit, formatter, i, magn, norm; |
| 782 |
|
| 783 |
if (axisOptions.mode == "time") { |
| 784 |
// pretty handling of time
|
| 785 |
|
| 786 |
// map of app. size of time units in milliseconds
|
| 787 |
var timeUnitSize = {
|
| 788 |
"second": 1000, |
| 789 |
"minute": 60 * 1000, |
| 790 |
"hour": 60 * 60 * 1000, |
| 791 |
"day": 24 * 60 * 60 * 1000, |
| 792 |
"month": 30 * 24 * 60 * 60 * 1000, |
| 793 |
"year": 365.2425 * 24 * 60 * 60 * 1000 |
| 794 |
}; |
| 795 |
|
| 796 |
|
| 797 |
// the allowed tick sizes, after 1 year we use
|
| 798 |
// an integer algorithm
|
| 799 |
var spec = [
|
| 800 |
[1, "second"], [2, "second"], [5, "second"], [10, "second"], |
| 801 |
[30, "second"], |
| 802 |
[1, "minute"], [2, "minute"], [5, "minute"], [10, "minute"], |
| 803 |
[30, "minute"], |
| 804 |
[1, "hour"], [2, "hour"], [4, "hour"], |
| 805 |
[8, "hour"], [12, "hour"], |
| 806 |
[1, "day"], [2, "day"], [3, "day"], |
| 807 |
[0.25, "month"], [0.5, "month"], [1, "month"], |
| 808 |
[2, "month"], [3, "month"], [6, "month"], |
| 809 |
[1, "year"] |
| 810 |
]; |
| 811 |
|
| 812 |
var minSize = 0; |
| 813 |
if (axisOptions.minTickSize != null) { |
| 814 |
if (typeof axisOptions.tickSize == "number") |
| 815 |
minSize = axisOptions.tickSize; |
| 816 |
else
|
| 817 |
minSize = axisOptions.minTickSize[0] * timeUnitSize[axisOptions.minTickSize[1]]; |
| 818 |
} |
| 819 |
|
| 820 |
for (i = 0; i < spec.length - 1; ++i) |
| 821 |
if (delta < (spec[i][0] * timeUnitSize[spec[i][1]] |
| 822 |
+ spec[i + 1][0] * timeUnitSize[spec[i + 1][1]]) / 2 |
| 823 |
&& spec[i][0] * timeUnitSize[spec[i][1]] >= minSize) |
| 824 |
break;
|
| 825 |
size = spec[i][0];
|
| 826 |
unit = spec[i][1];
|
| 827 |
|
| 828 |
// special-case the possibility of several years
|
| 829 |
if (unit == "year") { |
| 830 |
magn = Math.pow(10, Math.floor(Math.log(delta / timeUnitSize.year) / Math.LN10));
|
| 831 |
norm = (delta / timeUnitSize.year) / magn; |
| 832 |
if (norm < 1.5) |
| 833 |
size = 1;
|
| 834 |
else if (norm < 3) |
| 835 |
size = 2;
|
| 836 |
else if (norm < 7.5) |
| 837 |
size = 5;
|
| 838 |
else
|
| 839 |
size = 10;
|
| 840 |
|
| 841 |
size *= magn; |
| 842 |
} |
| 843 |
|
| 844 |
if (axisOptions.tickSize) {
|
| 845 |
size = axisOptions.tickSize[0];
|
| 846 |
unit = axisOptions.tickSize[1];
|
| 847 |
} |
| 848 |
|
| 849 |
generator = function(axis) { |
| 850 |
var ticks = [],
|
| 851 |
tickSize = axis.tickSize[0], unit = axis.tickSize[1], |
| 852 |
d = new Date(axis.min);
|
| 853 |
|
| 854 |
var step = tickSize * timeUnitSize[unit];
|
| 855 |
|
| 856 |
if (unit == "second") |
| 857 |
d.setUTCSeconds(floorInBase(d.getUTCSeconds(), tickSize)); |
| 858 |
if (unit == "minute") |
| 859 |
d.setUTCMinutes(floorInBase(d.getUTCMinutes(), tickSize)); |
| 860 |
if (unit == "hour") |
| 861 |
d.setUTCHours(floorInBase(d.getUTCHours(), tickSize)); |
| 862 |
if (unit == "month") |
| 863 |
d.setUTCMonth(floorInBase(d.getUTCMonth(), tickSize)); |
| 864 |
if (unit == "year") |
| 865 |
d.setUTCFullYear(floorInBase(d.getUTCFullYear(), tickSize)); |
| 866 |
|
| 867 |
// reset smaller components
|
| 868 |
d.setUTCMilliseconds(0);
|
| 869 |
if (step >= timeUnitSize.minute)
|
| 870 |
d.setUTCSeconds(0);
|
| 871 |
if (step >= timeUnitSize.hour)
|
| 872 |
d.setUTCMinutes(0);
|
| 873 |
if (step >= timeUnitSize.day)
|
| 874 |
d.setUTCHours(0);
|
| 875 |
if (step >= timeUnitSize.day * 4) |
| 876 |
d.setUTCDate(1);
|
| 877 |
if (step >= timeUnitSize.year)
|
| 878 |
d.setUTCMonth(0);
|
| 879 |
|
| 880 |
|
| 881 |
var carry = 0, v = Number.NaN, prev; |
| 882 |
do {
|
| 883 |
prev = v; |
| 884 |
v = d.getTime(); |
| 885 |
ticks.push({ v: v, label: axis.tickFormatter(v, axis) });
|
| 886 |
if (unit == "month") { |
| 887 |
if (tickSize < 1) { |
| 888 |
// a bit complicated - we'll divide the month
|
| 889 |
// up but we need to take care of fractions
|
| 890 |
// so we don't end up in the middle of a day
|
| 891 |
d.setUTCDate(1);
|
| 892 |
var start = d.getTime();
|
| 893 |
d.setUTCMonth(d.getUTCMonth() + 1);
|
| 894 |
var end = d.getTime();
|
| 895 |
d.setTime(v + carry * timeUnitSize.hour + (end - start) * tickSize); |
| 896 |
carry = d.getUTCHours(); |
| 897 |
d.setUTCHours(0);
|
| 898 |
} |
| 899 |
else
|
| 900 |
d.setUTCMonth(d.getUTCMonth() + tickSize); |
| 901 |
} |
| 902 |
else if (unit == "year") { |
| 903 |
d.setUTCFullYear(d.getUTCFullYear() + tickSize); |
| 904 |
} |
| 905 |
else
|
| 906 |
d.setTime(v + step); |
| 907 |
} while (v < axis.max && v != prev);
|
| 908 |
|
| 909 |
return ticks;
|
| 910 |
}; |
| 911 |
|
| 912 |
formatter = function (v, axis) { |
| 913 |
var d = new Date(v); |
| 914 |
|
| 915 |
// first check global format
|
| 916 |
if (axisOptions.timeformat != null) |
| 917 |
return $.plot.formatDate(d, axisOptions.timeformat, axisOptions.monthNames); |
| 918 |
|
| 919 |
var t = axis.tickSize[0] * timeUnitSize[axis.tickSize[1]]; |
| 920 |
var span = axis.max - axis.min;
|
| 921 |
var suffix = (axisOptions.twelveHourClock) ? " %p" : ""; |
| 922 |
|
| 923 |
if (t < timeUnitSize.minute)
|
| 924 |
fmt = "%h:%M:%S" + suffix;
|
| 925 |
else if (t < timeUnitSize.day) { |
| 926 |
if (span < 2 * timeUnitSize.day) |
| 927 |
fmt = "%h:%M" + suffix;
|
| 928 |
else
|
| 929 |
fmt = "%b %d %h:%M" + suffix;
|
| 930 |
} |
| 931 |
else if (t < timeUnitSize.month) |
| 932 |
fmt = "%b %d";
|
| 933 |
else if (t < timeUnitSize.year) { |
| 934 |
if (span < timeUnitSize.year)
|
| 935 |
fmt = "%b";
|
| 936 |
else
|
| 937 |
fmt = "%b %y";
|
| 938 |
} |
| 939 |
else
|
| 940 |
fmt = "%y";
|
| 941 |
|
| 942 |
return $.plot.formatDate(d, fmt, axisOptions.monthNames); |
| 943 |
}; |
| 944 |
} |
| 945 |
else {
|
| 946 |
// pretty rounding of base-10 numbers
|
| 947 |
var maxDec = axisOptions.tickDecimals;
|
| 948 |
var dec = -Math.floor(Math.log(delta) / Math.LN10);
|
| 949 |
if (maxDec != null && dec > maxDec) |
| 950 |
dec = maxDec; |
| 951 |
|
| 952 |
magn = Math.pow(10, -dec);
|
| 953 |
norm = delta / magn; // norm is between 1.0 and 10.0
|
| 954 |
|
| 955 |
if (norm < 1.5) |
| 956 |
size = 1;
|
| 957 |
else if (norm < 3) { |
| 958 |
size = 2;
|
| 959 |
// special case for 2.5, requires an extra decimal
|
| 960 |
if (norm > 2.25 && (maxDec == null || dec + 1 <= maxDec)) { |
| 961 |
size = 2.5;
|
| 962 |
++dec; |
| 963 |
} |
| 964 |
} |
| 965 |
else if (norm < 7.5) |
| 966 |
size = 5;
|
| 967 |
else
|
| 968 |
size = 10;
|
| 969 |
|
| 970 |
size *= magn; |
| 971 |
|
| 972 |
if (axisOptions.minTickSize != null && size < axisOptions.minTickSize) |
| 973 |
size = axisOptions.minTickSize; |
| 974 |
|
| 975 |
if (axisOptions.tickSize != null) |
| 976 |
size = axisOptions.tickSize; |
| 977 |
|
| 978 |
axis.tickDecimals = Math.max(0, (maxDec != null) ? maxDec : dec); |
| 979 |
|
| 980 |
generator = function (axis) { |
| 981 |
var ticks = [];
|
| 982 |
|
| 983 |
// spew out all possible ticks
|
| 984 |
var start = floorInBase(axis.min, axis.tickSize),
|
| 985 |
i = 0, v = Number.NaN, prev; |
| 986 |
do {
|
| 987 |
prev = v; |
| 988 |
v = start + i * axis.tickSize; |
| 989 |
ticks.push({ v: v, label: axis.tickFormatter(v, axis) });
|
| 990 |
++i; |
| 991 |
} while (v < axis.max && v != prev);
|
| 992 |
return ticks;
|
| 993 |
}; |
| 994 |
|
| 995 |
formatter = function (v, axis) { |
| 996 |
return v.toFixed(axis.tickDecimals);
|
| 997 |
}; |
| 998 |
} |
| 999 |
|
| 1000 |
axis.tickSize = unit ? [size, unit] : size; |
| 1001 |
axis.tickGenerator = generator; |
| 1002 |
if ($.isFunction(axisOptions.tickFormatter)) |
| 1003 |
axis.tickFormatter = function (v, axis) { return "" + axisOptions.tickFormatter(v, axis); }; |
| 1004 |
else
|
| 1005 |
axis.tickFormatter = formatter; |
| 1006 |
} |
| 1007 |
|
| 1008 |
function setTicks(axis, axisOptions) { |
| 1009 |
axis.ticks = []; |
| 1010 |
|
| 1011 |
if (!axis.used)
|
| 1012 |
return;
|
| 1013 |
|
| 1014 |
if (axisOptions.ticks == null) |
| 1015 |
axis.ticks = axis.tickGenerator(axis); |
| 1016 |
else if (typeof axisOptions.ticks == "number") { |
| 1017 |
if (axisOptions.ticks > 0) |
| 1018 |
axis.ticks = axis.tickGenerator(axis); |
| 1019 |
} |
| 1020 |
else if (axisOptions.ticks) { |
| 1021 |
var ticks = axisOptions.ticks;
|
| 1022 |
|
| 1023 |
if ($.isFunction(ticks)) |
| 1024 |
// generate the ticks
|
| 1025 |
ticks = ticks({ min: axis.min, max: axis.max });
|
| 1026 |
|
| 1027 |
// clean up the user-supplied ticks, copy them over
|
| 1028 |
var i, v;
|
| 1029 |
for (i = 0; i < ticks.length; ++i) { |
| 1030 |
var label = null; |
| 1031 |
var t = ticks[i];
|
| 1032 |
if (typeof t == "object") { |
| 1033 |
v = t[0];
|
| 1034 |
if (t.length > 1) |
| 1035 |
label = t[1];
|
| 1036 |
} |
| 1037 |
else
|
| 1038 |
v = t; |
| 1039 |
if (label == null) |
| 1040 |
label = axis.tickFormatter(v, axis); |
| 1041 |
axis.ticks[i] = { v: v, label: label };
|
| 1042 |
} |
| 1043 |
} |
| 1044 |
|
| 1045 |
if (axisOptions.autoscaleMargin != null && axis.ticks.length > 0) { |
| 1046 |
// snap to ticks
|
| 1047 |
if (axisOptions.min == null) |
| 1048 |
axis.min = Math.min(axis.min, axis.ticks[0].v);
|
| 1049 |
if (axisOptions.max == null && axis.ticks.length > 1) |
| 1050 |
axis.max = Math.max(axis.max, axis.ticks[axis.ticks.length - 1].v);
|
| 1051 |
} |
| 1052 |
} |
| 1053 |
|
| 1054 |
function draw() { |
| 1055 |
ctx.clearRect(0, 0, canvasWidth, canvasHeight); |
| 1056 |
|
| 1057 |
var grid = options.grid;
|
| 1058 |
|
| 1059 |
if (grid.show && !grid.aboveData)
|
| 1060 |
drawGrid(); |
| 1061 |
|
| 1062 |
for (var i = 0; i < series.length; ++i) |
| 1063 |
drawSeries(series[i]); |
| 1064 |
|
| 1065 |
executeHooks(hooks.draw, [ctx]); |
| 1066 |
|
| 1067 |
if (grid.show && grid.aboveData)
|
| 1068 |
drawGrid(); |
| 1069 |
} |
| 1070 |
|
| 1071 |
function extractRange(ranges, coord) { |
| 1072 |
var firstAxis = coord + "axis", |
| 1073 |
secondaryAxis = coord + "2axis",
|
| 1074 |
axis, from, to, reverse; |
| 1075 |
|
| 1076 |
if (ranges[firstAxis]) {
|
| 1077 |
axis = axes[firstAxis]; |
| 1078 |
from = ranges[firstAxis].from; |
| 1079 |
to = ranges[firstAxis].to; |
| 1080 |
} |
| 1081 |
else if (ranges[secondaryAxis]) { |
| 1082 |
axis = axes[secondaryAxis]; |
| 1083 |
from = ranges[secondaryAxis].from; |
| 1084 |
to = ranges[secondaryAxis].to; |
| 1085 |
} |
| 1086 |
else {
|
| 1087 |
// backwards-compat stuff - to be removed in future
|
| 1088 |
axis = axes[firstAxis]; |
| 1089 |
from = ranges[coord + "1"];
|
| 1090 |
to = ranges[coord + "2"];
|
| 1091 |
} |
| 1092 |
|
| 1093 |
// auto-reverse as an added bonus
|
| 1094 |
if (from != null && to != null && from > to) |
| 1095 |
return { from: to, to: from, axis: axis }; |
| 1096 |
|
| 1097 |
return { from: from, to: to, axis: axis }; |
| 1098 |
} |
| 1099 |
|
| 1100 |
function drawGrid() { |
| 1101 |
var i;
|
| 1102 |
|
| 1103 |
ctx.save(); |
| 1104 |
ctx.translate(plotOffset.left, plotOffset.top); |
| 1105 |
|
| 1106 |
// draw background, if any
|
| 1107 |
if (options.grid.backgroundColor) {
|
| 1108 |
ctx.fillStyle = getColorOrGradient(options.grid.backgroundColor, plotHeight, 0, "rgba(255, 255, 255, 0)"); |
| 1109 |
ctx.fillRect(0, 0, plotWidth, plotHeight); |
| 1110 |
} |
| 1111 |
|
| 1112 |
// draw markings
|
| 1113 |
var markings = options.grid.markings;
|
| 1114 |
if (markings) {
|
| 1115 |
if ($.isFunction(markings)) |
| 1116 |
// xmin etc. are backwards-compatible, to be removed in future
|
| 1117 |
markings = markings({ xmin: axes.xaxis.min, xmax: axes.xaxis.max, ymin: axes.yaxis.min, ymax: axes.yaxis.max, xaxis: axes.xaxis, yaxis: axes.yaxis, x2axis: axes.x2axis, y2axis: axes.y2axis });
|
| 1118 |
|
| 1119 |
for (i = 0; i < markings.length; ++i) { |
| 1120 |
var m = markings[i],
|
| 1121 |
xrange = extractRange(m, "x"),
|
| 1122 |
yrange = extractRange(m, "y");
|
| 1123 |
|
| 1124 |
// fill in missing
|
| 1125 |
if (xrange.from == null) |
| 1126 |
xrange.from = xrange.axis.min; |
| 1127 |
if (xrange.to == null) |
| 1128 |
xrange.to = xrange.axis.max; |
| 1129 |
if (yrange.from == null) |
| 1130 |
yrange.from = yrange.axis.min; |
| 1131 |
if (yrange.to == null) |
| 1132 |
yrange.to = yrange.axis.max; |
| 1133 |
|
| 1134 |
// clip
|
| 1135 |
if (xrange.to < xrange.axis.min || xrange.from > xrange.axis.max ||
|
| 1136 |
yrange.to < yrange.axis.min || yrange.from > yrange.axis.max) |
| 1137 |
continue;
|
| 1138 |
|
| 1139 |
xrange.from = Math.max(xrange.from, xrange.axis.min); |
| 1140 |
xrange.to = Math.min(xrange.to, xrange.axis.max); |
| 1141 |
yrange.from = Math.max(yrange.from, yrange.axis.min); |
| 1142 |
yrange.to = Math.min(yrange.to, yrange.axis.max); |
| 1143 |
|
| 1144 |
if (xrange.from == xrange.to && yrange.from == yrange.to)
|
| 1145 |
continue;
|
| 1146 |
|
| 1147 |
// then draw
|
| 1148 |
xrange.from = xrange.axis.p2c(xrange.from); |
| 1149 |
xrange.to = xrange.axis.p2c(xrange.to); |
| 1150 |
yrange.from = yrange.axis.p2c(yrange.from); |
| 1151 |
yrange.to = yrange.axis.p2c(yrange.to); |
| 1152 |
|
| 1153 |
if (xrange.from == xrange.to || yrange.from == yrange.to) {
|
| 1154 |
// draw line
|
| 1155 |
ctx.beginPath(); |
| 1156 |
ctx.strokeStyle = m.color || options.grid.markingsColor; |
| 1157 |
ctx.lineWidth = m.lineWidth || options.grid.markingsLineWidth; |
| 1158 |
//ctx.moveTo(Math.floor(xrange.from), yrange.from);
|
| 1159 |
//ctx.lineTo(Math.floor(xrange.to), yrange.to);
|
| 1160 |
ctx.moveTo(xrange.from, yrange.from); |
| 1161 |
ctx.lineTo(xrange.to, yrange.to); |
| 1162 |
ctx.stroke(); |
| 1163 |
} |
| 1164 |
else {
|
| 1165 |
// fill area
|
| 1166 |
ctx.fillStyle = m.color || options.grid.markingsColor; |
| 1167 |
ctx.fillRect(xrange.from, yrange.to, |
| 1168 |
xrange.to - xrange.from, |
| 1169 |
yrange.from - yrange.to); |
| 1170 |
} |
| 1171 |
} |
| 1172 |
} |
| 1173 |
|
| 1174 |
// draw the inner grid
|
| 1175 |
ctx.lineWidth = 1;
|
| 1176 |
ctx.strokeStyle = options.grid.tickColor; |
| 1177 |
ctx.beginPath(); |
| 1178 |
var v, axis = axes.xaxis;
|
| 1179 |
for (i = 0; i < axis.ticks.length; ++i) { |
| 1180 |
v = axis.ticks[i].v; |
| 1181 |
if (v <= axis.min || v >= axes.xaxis.max)
|
| 1182 |
continue; // skip those lying on the axes |
| 1183 |
|
| 1184 |
ctx.moveTo(Math.floor(axis.p2c(v)) + ctx.lineWidth/2, 0); |
| 1185 |
ctx.lineTo(Math.floor(axis.p2c(v)) + ctx.lineWidth/2, plotHeight);
|
| 1186 |
} |
| 1187 |
|
| 1188 |
axis = axes.yaxis; |
| 1189 |
for (i = 0; i < axis.ticks.length; ++i) { |
| 1190 |
v = axis.ticks[i].v; |
| 1191 |
if (v <= axis.min || v >= axis.max)
|
| 1192 |
continue;
|
| 1193 |
|
| 1194 |
ctx.moveTo(0, Math.floor(axis.p2c(v)) + ctx.lineWidth/2); |
| 1195 |
ctx.lineTo(plotWidth, Math.floor(axis.p2c(v)) + ctx.lineWidth/2);
|
| 1196 |
} |
| 1197 |
|
| 1198 |
axis = axes.x2axis; |
| 1199 |
for (i = 0; i < axis.ticks.length; ++i) { |
| 1200 |
v = axis.ticks[i].v; |
| 1201 |
if (v <= axis.min || v >= axis.max)
|
| 1202 |
continue;
|
| 1203 |
|
| 1204 |
ctx.moveTo(Math.floor(axis.p2c(v)) + ctx.lineWidth/2, -5); |
| 1205 |
ctx.lineTo(Math.floor(axis.p2c(v)) + ctx.lineWidth/2, 5); |
| 1206 |
} |
| 1207 |
|
| 1208 |
axis = axes.y2axis; |
| 1209 |
for (i = 0; i < axis.ticks.length; ++i) { |
| 1210 |
v = axis.ticks[i].v; |
| 1211 |
if (v <= axis.min || v >= axis.max)
|
| 1212 |
continue;
|
| 1213 |
|
| 1214 |
ctx.moveTo(plotWidth-5, Math.floor(axis.p2c(v)) + ctx.lineWidth/2); |
| 1215 |
ctx.lineTo(plotWidth+5, Math.floor(axis.p2c(v)) + ctx.lineWidth/2); |
| 1216 |
} |
| 1217 |
|
| 1218 |
ctx.stroke(); |
| 1219 |
|
| 1220 |
if (options.grid.borderWidth) {
|
| 1221 |
// draw border
|
| 1222 |
var bw = options.grid.borderWidth;
|
| 1223 |
ctx.lineWidth = bw; |
| 1224 |
ctx.strokeStyle = options.grid.borderColor; |
| 1225 |
ctx.strokeRect(-bw/2, -bw/2, plotWidth + bw, plotHeight + bw); |
| 1226 |
} |
| 1227 |
|
| 1228 |
ctx.restore(); |
| 1229 |
} |
| 1230 |
|
| 1231 |
function insertLabels() { |
| 1232 |
placeholder.find(".tickLabels").remove();
|
| 1233 |
|
| 1234 |
var html = ['<div class="tickLabels" style="font-size:smaller;color:' + options.grid.color + '">']; |
| 1235 |
|
| 1236 |
function addLabels(axis, labelGenerator) { |
| 1237 |
for (var i = 0; i < axis.ticks.length; ++i) { |
| 1238 |
var tick = axis.ticks[i];
|
| 1239 |
if (!tick.label || tick.v < axis.min || tick.v > axis.max)
|
| 1240 |
continue;
|
| 1241 |
html.push(labelGenerator(tick, axis)); |
| 1242 |
} |
| 1243 |
} |
| 1244 |
|
| 1245 |
var margin = options.grid.labelMargin + options.grid.borderWidth;
|
| 1246 |
|
| 1247 |
addLabels(axes.xaxis, function (tick, axis) {
|
| 1248 |
return '<div style="position:absolute;top:' + (plotOffset.top + plotHeight + margin) + 'px;left:' + Math.round(plotOffset.left + axis.p2c(tick.v) - axis.labelWidth/2) + 'px;width:' + axis.labelWidth + 'px;text-align:center" class="tickLabel">' + tick.label + "</div>"; |
| 1249 |
}); |
| 1250 |
|
| 1251 |
|
| 1252 |
addLabels(axes.yaxis, function (tick, axis) {
|
| 1253 |
return '<div style="position:absolute;top:' + Math.round(plotOffset.top + axis.p2c(tick.v) - axis.labelHeight/2) + 'px;right:' + (plotOffset.right + plotWidth + margin) + 'px;width:' + axis.labelWidth + 'px;text-align:right" class="tickLabel">' + tick.label + "</div>"; |
| 1254 |
}); |
| 1255 |
|
| 1256 |
addLabels(axes.x2axis, function (tick, axis) {
|
| 1257 |
return '<div style="position:absolute;bottom:' + (plotOffset.bottom + plotHeight + margin) + 'px;left:' + Math.round(plotOffset.left + axis.p2c(tick.v) - axis.labelWidth/2) + 'px;width:' + axis.labelWidth + 'px;text-align:center" class="tickLabel">' + tick.label + "</div>"; |
| 1258 |
}); |
| 1259 |
|
| 1260 |
addLabels(axes.y2axis, function (tick, axis) {
|
| 1261 |
return '<div style="position:absolute;top:' + Math.round(plotOffset.top + axis.p2c(tick.v) - axis.labelHeight/2) + 'px;left:' + (plotOffset.left + plotWidth + margin) +'px;width:' + axis.labelWidth + 'px;text-align:left" class="tickLabel">' + tick.label + "</div>"; |
| 1262 |
}); |
| 1263 |
|
| 1264 |
html.push('</div>');
|
| 1265 |
|
| 1266 |
placeholder.append(html.join(""));
|
| 1267 |
} |
| 1268 |
|
| 1269 |
function drawSeries(series) { |
| 1270 |
if (series.lines.show)
|
| 1271 |
drawSeriesLines(series); |
| 1272 |
if (series.bars.show)
|
| 1273 |
drawSeriesBars(series); |
| 1274 |
if (series.points.show)
|
| 1275 |
drawSeriesPoints(series); |
| 1276 |
} |
| 1277 |
|
| 1278 |
function drawSeriesLines(series) { |
| 1279 |
function plotLine(datapoints, xoffset, yoffset, axisx, axisy) { |
| 1280 |
var points = datapoints.points,
|
| 1281 |
ps = datapoints.pointsize, |
| 1282 |
prevx = null, prevy = null; |
| 1283 |
|
| 1284 |
ctx.beginPath(); |
| 1285 |
for (var i = ps; i < points.length; i += ps) { |
| 1286 |
var x1 = points[i - ps], y1 = points[i - ps + 1], |
| 1287 |
x2 = points[i], y2 = points[i + 1];
|
| 1288 |
|
| 1289 |
if (x1 == null || x2 == null) |
| 1290 |
continue;
|
| 1291 |
|
| 1292 |
// clip with ymin
|
| 1293 |
if (y1 <= y2 && y1 < axisy.min) {
|
| 1294 |
if (y2 < axisy.min)
|
| 1295 |
continue; // line segment is outside |
| 1296 |
// compute new intersection point
|
| 1297 |
x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1; |
| 1298 |
y1 = axisy.min; |
| 1299 |
} |
| 1300 |
else if (y2 <= y1 && y2 < axisy.min) { |
| 1301 |
if (y1 < axisy.min)
|
| 1302 |
continue;
|
| 1303 |
x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1; |
| 1304 |
y2 = axisy.min; |
| 1305 |
} |
| 1306 |
|
| 1307 |
// clip with ymax
|
| 1308 |
if (y1 >= y2 && y1 > axisy.max) {
|
| 1309 |
if (y2 > axisy.max)
|
| 1310 |
continue;
|
| 1311 |
x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1; |
| 1312 |
y1 = axisy.max; |
| 1313 |
} |
| 1314 |
else if (y2 >= y1 && y2 > axisy.max) { |
| 1315 |
if (y1 > axisy.max)
|
| 1316 |
continue;
|
| 1317 |
x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1; |
| 1318 |
y2 = axisy.max; |
| 1319 |
} |
| 1320 |
|
| 1321 |
// clip with xmin
|
| 1322 |
if (x1 <= x2 && x1 < axisx.min) {
|
| 1323 |
if (x2 < axisx.min)
|
| 1324 |
continue;
|
| 1325 |
y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1; |
| 1326 |
x1 = axisx.min; |
| 1327 |
} |
| 1328 |
else if (x2 <= x1 && x2 < axisx.min) { |
| 1329 |
if (x1 < axisx.min)
|
| 1330 |
continue;
|
| 1331 |
y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1; |
| 1332 |
x2 = axisx.min; |
| 1333 |
} |
| 1334 |
|
| 1335 |
// clip with xmax
|
| 1336 |
if (x1 >= x2 && x1 > axisx.max) {
|
| 1337 |
if (x2 > axisx.max)
|
| 1338 |
continue;
|
| 1339 |
y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1; |
| 1340 |
x1 = axisx.max; |
| 1341 |
} |
| 1342 |
else if (x2 >= x1 && x2 > axisx.max) { |
| 1343 |
if (x1 > axisx.max)
|
| 1344 |
continue;
|
| 1345 |
y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1; |
| 1346 |
x2 = axisx.max; |
| 1347 |
} |
| 1348 |
|
| 1349 |
if (x1 != prevx || y1 != prevy)
|
| 1350 |
ctx.moveTo(axisx.p2c(x1) + xoffset, axisy.p2c(y1) + yoffset); |
| 1351 |
|
| 1352 |
prevx = x2; |
| 1353 |
prevy = y2; |
| 1354 |
ctx.lineTo(axisx.p2c(x2) + xoffset, axisy.p2c(y2) + yoffset); |
| 1355 |
} |
| 1356 |
ctx.stroke(); |
| 1357 |
} |
| 1358 |
|
| 1359 |
function plotLineArea(datapoints, axisx, axisy) { |
| 1360 |
var points = datapoints.points,
|
| 1361 |
ps = datapoints.pointsize, |
| 1362 |
bottom = Math.min(Math.max(0, axisy.min), axisy.max),
|
| 1363 |
top, lastX = 0, areaOpen = false; |
| 1364 |
|
| 1365 |
for (var i = ps; i < points.length; i += ps) { |
| 1366 |
var x1 = points[i - ps], y1 = points[i - ps + 1], |
| 1367 |
x2 = points[i], y2 = points[i + 1];
|
| 1368 |
|
| 1369 |
if (areaOpen && x1 != null && x2 == null) { |
| 1370 |
// close area
|
| 1371 |
ctx.lineTo(axisx.p2c(lastX), axisy.p2c(bottom)); |
| 1372 |
ctx.fill(); |
| 1373 |
areaOpen = false;
|
| 1374 |
continue;
|
| 1375 |
} |
| 1376 |
|
| 1377 |
if (x1 == null || x2 == null) |
| 1378 |
continue;
|
| 1379 |
|
| 1380 |
// clip x values
|
| 1381 |
|
| 1382 |
// clip with xmin
|
| 1383 |
if (x1 <= x2 && x1 < axisx.min) {
|
| 1384 |
if (x2 < axisx.min)
|
| 1385 |
continue;
|
| 1386 |
y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1; |
| 1387 |
x1 = axisx.min; |
| 1388 |
} |
| 1389 |
else if (x2 <= x1 && x2 < axisx.min) { |
| 1390 |
if (x1 < axisx.min)
|
| 1391 |
continue;
|
| 1392 |
y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1; |
| 1393 |
x2 = axisx.min; |
| 1394 |
} |
| 1395 |
|
| 1396 |
// clip with xmax
|
| 1397 |
if (x1 >= x2 && x1 > axisx.max) {
|
| 1398 |
if (x2 > axisx.max)
|
| 1399 |
continue;
|
| 1400 |
y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1; |
| 1401 |
x1 = axisx.max; |
| 1402 |
} |
| 1403 |
else if (x2 >= x1 && x2 > axisx.max) { |
| 1404 |
if (x1 > axisx.max)
|
| 1405 |
continue;
|
| 1406 |
y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1; |
| 1407 |
x2 = axisx.max; |
| 1408 |
} |
| 1409 |
|
| 1410 |
if (!areaOpen) {
|
| 1411 |
// open area
|
| 1412 |
ctx.beginPath(); |
| 1413 |
ctx.moveTo(axisx.p2c(x1), axisy.p2c(bottom)); |
| 1414 |
areaOpen = true;
|
| 1415 |
} |
| 1416 |
|
| 1417 |
// now first check the case where both is outside
|
| 1418 |
if (y1 >= axisy.max && y2 >= axisy.max) {
|
| 1419 |
ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.max)); |
| 1420 |
ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.max)); |
| 1421 |
lastX = x2; |
| 1422 |
continue;
|
| 1423 |
} |
| 1424 |
else if (y1 <= axisy.min && y2 <= axisy.min) { |
| 1425 |
ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.min)); |
| 1426 |
ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.min)); |
| 1427 |
lastX = x2; |
| 1428 |
continue;
|
| 1429 |
} |
| 1430 |
|
| 1431 |
// else it's a bit more complicated, there might
|
| 1432 |
// be two rectangles and two triangles we need to fill
|
| 1433 |
// in; to find these keep track of the current x values
|
| 1434 |
var x1old = x1, x2old = x2;
|
| 1435 |
|
| 1436 |
// and clip the y values, without shortcutting
|
| 1437 |
|
| 1438 |
// clip with ymin
|
| 1439 |
if (y1 <= y2 && y1 < axisy.min && y2 >= axisy.min) {
|
| 1440 |
x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1; |
| 1441 |
y1 = axisy.min; |
| 1442 |
} |
| 1443 |
else if (y2 <= y1 && y2 < axisy.min && y1 >= axisy.min) { |
| 1444 |
x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1; |
| 1445 |
y2 = axisy.min; |
| 1446 |
} |
| 1447 |
|
| 1448 |
// clip with ymax
|
| 1449 |
if (y1 >= y2 && y1 > axisy.max && y2 <= axisy.max) {
|
| 1450 |
x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1; |
| 1451 |
y1 = axisy.max; |
| 1452 |
} |
| 1453 |
else if (y2 >= y1 && y2 > axisy.max && y1 <= axisy.max) { |
| 1454 |
x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1; |
| 1455 |
y2 = axisy.max; |
| 1456 |
} |
| 1457 |
|
| 1458 |
|
| 1459 |
// if the x value was changed we got a rectangle
|
| 1460 |
// to fill
|
| 1461 |
if (x1 != x1old) {
|
| 1462 |
if (y1 <= axisy.min)
|
| 1463 |
top = axisy.min; |
| 1464 |
else
|
| 1465 |
top = axisy.max; |
| 1466 |
|
| 1467 |
ctx.lineTo(axisx.p2c(x1old), axisy.p2c(top)); |
| 1468 |
ctx.lineTo(axisx.p2c(x1), axisy.p2c(top)); |
| 1469 |
} |
| 1470 |
|
| 1471 |
// fill the triangles
|
| 1472 |
ctx.lineTo(axisx.p2c(x1), axisy.p2c(y1)); |
| 1473 |
ctx.lineTo(axisx.p2c(x2), axisy.p2c(y2)); |
| 1474 |
|
| 1475 |
// fill the other rectangle if it's there
|
| 1476 |
if (x2 != x2old) {
|
| 1477 |
if (y2 <= axisy.min)
|
| 1478 |
top = axisy.min; |
| 1479 |
else
|
| 1480 |
top = axisy.max; |
| 1481 |
|
| 1482 |
ctx.lineTo(axisx.p2c(x2), axisy.p2c(top)); |
| 1483 |
ctx.lineTo(axisx.p2c(x2old), axisy.p2c(top)); |
| 1484 |
} |
| 1485 |
|
| 1486 |
lastX = Math.max(x2, x2old); |
| 1487 |
} |
| 1488 |
|
| 1489 |
if (areaOpen) {
|
| 1490 |
ctx.lineTo(axisx.p2c(lastX), axisy.p2c(bottom)); |
| 1491 |
ctx.fill(); |
| 1492 |
} |
| 1493 |
} |
| 1494 |
|
| 1495 |
ctx.save(); |
| 1496 |
ctx.translate(plotOffset.left, plotOffset.top); |
| 1497 |
ctx.lineJoin = "round";
|
| 1498 |
|
| 1499 |
var lw = series.lines.lineWidth,
|
| 1500 |
sw = series.shadowSize; |
| 1501 |
// FIXME: consider another form of shadow when filling is turned on
|
| 1502 |
if (lw > 0 && sw > 0) { |
| 1503 |
// draw shadow as a thick and thin line with transparency
|
| 1504 |
ctx.lineWidth = sw; |
| 1505 |
ctx.strokeStyle = "rgba(0,0,0,0.1)";
|
| 1506 |
// position shadow at angle from the mid of line
|
| 1507 |
var angle = Math.PI/18; |
| 1508 |
plotLine(series.datapoints, Math.sin(angle) * (lw/2 + sw/2), Math.cos(angle) * (lw/2 + sw/2), series.xaxis, series.yaxis); |
| 1509 |
ctx.lineWidth = sw/2;
|
| 1510 |
plotLine(series.datapoints, Math.sin(angle) * (lw/2 + sw/4), Math.cos(angle) * (lw/2 + sw/4), series.xaxis, series.yaxis); |
| 1511 |
} |
| 1512 |
|
| 1513 |
ctx.lineWidth = lw; |
| 1514 |
ctx.strokeStyle = series.color; |
| 1515 |
var fillStyle = getFillStyle(series.lines, series.color, 0, plotHeight); |
| 1516 |
if (fillStyle) {
|
| 1517 |
ctx.fillStyle = fillStyle; |
| 1518 |
plotLineArea(series.datapoints, series.xaxis, series.yaxis); |
| 1519 |
} |
| 1520 |
|
| 1521 |
if (lw > 0) |
| 1522 |
plotLine(series.datapoints, 0, 0, series.xaxis, series.yaxis); |
| 1523 |
ctx.restore(); |
| 1524 |
} |
| 1525 |
|
| 1526 |
function drawSeriesPoints(series) { |
| 1527 |
function plotPoints(datapoints, radius, fillStyle, offset, circumference, axisx, axisy) { |
| 1528 |
var points = datapoints.points, ps = datapoints.pointsize;
|
| 1529 |
|
| 1530 |
for (var i = 0; i < points.length; i += ps) { |
| 1531 |
var x = points[i], y = points[i + 1]; |
| 1532 |
if (x == null || x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max) |
| 1533 |
continue;
|
| 1534 |
|
| 1535 |
ctx.beginPath(); |
| 1536 |
ctx.arc(axisx.p2c(x), axisy.p2c(y) + offset, radius, 0, circumference, false); |
| 1537 |
if (fillStyle) {
|
| 1538 |
ctx.fillStyle = fillStyle; |
| 1539 |
ctx.fill(); |
| 1540 |
} |
| 1541 |
ctx.stroke(); |
| 1542 |
} |
| 1543 |
} |
| 1544 |
|
| 1545 |
ctx.save(); |
| 1546 |
ctx.translate(plotOffset.left, plotOffset.top); |
| 1547 |
|
| 1548 |
var lw = series.lines.lineWidth,
|
| 1549 |
sw = series.shadowSize, |
| 1550 |
radius = series.points.radius; |
| 1551 |
if (lw > 0 && sw > 0) { |
| 1552 |
// draw shadow in two steps
|
| 1553 |
var w = sw / 2; |
| 1554 |
ctx.lineWidth = w; |
| 1555 |
ctx.strokeStyle = "rgba(0,0,0,0.1)";
|
| 1556 |
plotPoints(series.datapoints, radius, null, w + w/2, Math.PI, |
| 1557 |
series.xaxis, series.yaxis); |
| 1558 |
|
| 1559 |
ctx.strokeStyle = "rgba(0,0,0,0.2)";
|
| 1560 |
plotPoints(series.datapoints, radius, null, w/2, Math.PI, |
| 1561 |
series.xaxis, series.yaxis); |
| 1562 |
} |
| 1563 |
|
| 1564 |
ctx.lineWidth = lw; |
| 1565 |
ctx.strokeStyle = series.color; |
| 1566 |
plotPoints(series.datapoints, radius, |
| 1567 |
getFillStyle(series.points, series.color), 0, 2 * Math.PI, |
| 1568 |
series.xaxis, series.yaxis); |
| 1569 |
ctx.restore(); |
| 1570 |
} |
| 1571 |
|
| 1572 |
function drawBar(x, y, b, barLeft, barRight, offset, fillStyleCallback, axisx, axisy, c, horizontal) { |
| 1573 |
var left, right, bottom, top,
|
| 1574 |
drawLeft, drawRight, drawTop, drawBottom, |
| 1575 |
tmp; |
| 1576 |
|
| 1577 |
if (horizontal) {
|
| 1578 |
drawBottom = drawRight = drawTop = true;
|
| 1579 |
drawLeft = false;
|
| 1580 |
left = b; |
| 1581 |
right = x; |
| 1582 |
top = y + barLeft; |
| 1583 |
bottom = y + barRight; |
| 1584 |
|
| 1585 |
// account for negative bars
|
| 1586 |
if (right < left) {
|
| 1587 |
tmp = right; |
| 1588 |
right = left; |
| 1589 |
left = tmp; |
| 1590 |
drawLeft = true;
|
| 1591 |
drawRight = false;
|
| 1592 |
} |
| 1593 |
} |
| 1594 |
else {
|
| 1595 |
drawLeft = drawRight = drawTop = true;
|
| 1596 |
drawBottom = false;
|
| 1597 |
left = x + barLeft; |
| 1598 |
right = x + barRight; |
| 1599 |
bottom = b; |
| 1600 |
top = y; |
| 1601 |
|
| 1602 |
// account for negative bars
|
| 1603 |
if (top < bottom) {
|
| 1604 |
tmp = top; |
| 1605 |
top = bottom; |
| 1606 |
bottom = tmp; |
| 1607 |
drawBottom = true;
|
| 1608 |
drawTop = false;
|
| 1609 |
} |
| 1610 |
} |
| 1611 |
|
| 1612 |
// clip
|
| 1613 |
if (right < axisx.min || left > axisx.max ||
|
| 1614 |
top < axisy.min || bottom > axisy.max) |
| 1615 |
return;
|
| 1616 |
|
| 1617 |
if (left < axisx.min) {
|
| 1618 |
left = axisx.min; |
| 1619 |
drawLeft = false;
|
| 1620 |
} |
| 1621 |
|
| 1622 |
if (right > axisx.max) {
|
| 1623 |
right = axisx.max; |
| 1624 |
drawRight = false;
|
| 1625 |
} |
| 1626 |
|
| 1627 |
if (bottom < axisy.min) {
|
| 1628 |
bottom = axisy.min; |
| 1629 |
drawBottom = false;
|
| 1630 |
} |
| 1631 |
|
| 1632 |
if (top > axisy.max) {
|
| 1633 |
top = axisy.max; |
| 1634 |
drawTop = false;
|
| 1635 |
} |
| 1636 |
|
| 1637 |
left = axisx.p2c(left); |
| 1638 |
bottom = axisy.p2c(bottom); |
| 1639 |
right = axisx.p2c(right); |
| 1640 |
top = axisy.p2c(top); |
| 1641 |
|
| 1642 |
// fill the bar
|
| 1643 |
if (fillStyleCallback) {
|
| 1644 |
c.beginPath(); |
| 1645 |
c.moveTo(left, bottom); |
| 1646 |
c.lineTo(left, top); |
| 1647 |
c.lineTo(right, top); |
| 1648 |
c.lineTo(right, bottom); |
| 1649 |
c.fillStyle = fillStyleCallback(bottom, top); |
| 1650 |
c.fill(); |
| 1651 |
} |
| 1652 |
|
| 1653 |
// draw outline
|
| 1654 |
if (drawLeft || drawRight || drawTop || drawBottom) {
|
| 1655 |
c.beginPath(); |
| 1656 |
|
| 1657 |
// FIXME: inline moveTo is buggy with excanvas
|
| 1658 |
c.moveTo(left, bottom + offset); |
| 1659 |
if (drawLeft)
|
| 1660 |
c.lineTo(left, top + offset); |
| 1661 |
else
|
| 1662 |
c.moveTo(left, top + offset); |
| 1663 |
if (drawTop)
|
| 1664 |
c.lineTo(right, top + offset); |
| 1665 |
else
|
| 1666 |
c.moveTo(right, top + offset); |
| 1667 |
if (drawRight)
|
| 1668 |
c.lineTo(right, bottom + offset); |
| 1669 |
else
|
| 1670 |
c.moveTo(right, bottom + offset); |
| 1671 |
if (drawBottom)
|
| 1672 |
c.lineTo(left, bottom + offset); |
| 1673 |
else
|
| 1674 |
c.moveTo(left, bottom + offset); |
| 1675 |
c.stroke(); |
| 1676 |
} |
| 1677 |
} |
| 1678 |
|
| 1679 |
function drawSeriesBars(series) { |
| 1680 |
function plotBars(datapoints, barLeft, barRight, offset, fillStyleCallback, axisx, axisy) { |
| 1681 |
var points = datapoints.points, ps = datapoints.pointsize;
|
| 1682 |
|
| 1683 |
for (var i = 0; i < points.length; i += ps) { |
| 1684 |
if (points[i] == null) |
| 1685 |
continue;
|
| 1686 |
drawBar(points[i], points[i + 1], points[i + 2], barLeft, barRight, offset, fillStyleCallback, axisx, axisy, ctx, series.bars.horizontal); |
| 1687 |
} |
| 1688 |
} |
| 1689 |
|
| 1690 |
ctx.save(); |
| 1691 |
ctx.translate(plotOffset.left, plotOffset.top); |
| 1692 |
|
| 1693 |
// FIXME: figure out a way to add shadows (for instance along the right edge)
|
| 1694 |
ctx.lineWidth = series.bars.lineWidth; |
| 1695 |
ctx.strokeStyle = series.color; |
| 1696 |
var barLeft = series.bars.align == "left" ? 0 : -series.bars.barWidth/2; |
| 1697 |
var fillStyleCallback = series.bars.fill ? function (bottom, top) { return getFillStyle(series.bars, series.color, bottom, top); } : null; |
| 1698 |
plotBars(series.datapoints, barLeft, barLeft + series.bars.barWidth, 0, fillStyleCallback, series.xaxis, series.yaxis);
|
| 1699 |
ctx.restore(); |
| 1700 |
} |
| 1701 |
|
| 1702 |
function getFillStyle(filloptions, seriesColor, bottom, top) { |
| 1703 |
var fill = filloptions.fill;
|
| 1704 |
if (!fill)
|
| 1705 |
return null; |
| 1706 |
|
| 1707 |
if (filloptions.fillColor)
|
| 1708 |
return getColorOrGradient(filloptions.fillColor, bottom, top, seriesColor);
|
| 1709 |
|
| 1710 |
var c = $.color.parse(seriesColor); |
| 1711 |
c.a = typeof fill == "number" ? fill : 0.4; |
| 1712 |
c.normalize(); |
| 1713 |
return c.toString();
|
| 1714 |
} |
| 1715 |
|
| 1716 |
function insertLegend() { |
| 1717 |
placeholder.find(".legend").remove();
|
| 1718 |
|
| 1719 |
if (!options.legend.show)
|
| 1720 |
return;
|
| 1721 |
|
| 1722 |
var fragments = [], rowStarted = false, |
| 1723 |
lf = options.legend.labelFormatter, s, label; |
| 1724 |
for (i = 0; i < series.length; ++i) { |
| 1725 |
s = series[i]; |
| 1726 |
label = s.label; |
| 1727 |
if (!label)
|
| 1728 |
continue;
|
| 1729 |
|
| 1730 |
if (i % options.legend.noColumns == 0) { |
| 1731 |
if (rowStarted)
|
| 1732 |
fragments.push('</tr>');
|
| 1733 |
fragments.push('<tr>');
|
| 1734 |
rowStarted = true;
|
| 1735 |
} |
| 1736 |
|
| 1737 |
if (lf)
|
| 1738 |
label = lf(label, s); |
| 1739 |
|
| 1740 |
fragments.push( |
| 1741 |
'<td class="legendColorBox"><div style="border:1px solid ' + options.legend.labelBoxBorderColor + ';padding:1px"><div style="width:4px;height:0;border:5px solid ' + s.color + ';overflow:hidden"></div></div></td>' + |
| 1742 |
'<td class="legendLabel">' + label + '</td>'); |
| 1743 |
} |
| 1744 |
if (rowStarted)
|
| 1745 |
fragments.push('</tr>');
|
| 1746 |
|
| 1747 |
if (fragments.length == 0) |
| 1748 |
return;
|
| 1749 |
|
| 1750 |
var table = '<table style="font-size:smaller;color:' + options.grid.color + '">' + fragments.join("") + '</table>'; |
| 1751 |
if (options.legend.container != null) |
| 1752 |
$(options.legend.container).html(table);
|
| 1753 |
else {
|
| 1754 |
var pos = "", |
| 1755 |
p = options.legend.position, |
| 1756 |
m = options.legend.margin; |
| 1757 |
if (m[0] == null) |
| 1758 |
m = [m, m]; |
| 1759 |
if (p.charAt(0) == "n") |
| 1760 |
pos += 'top:' + (m[1] + plotOffset.top) + 'px;'; |
| 1761 |
else if (p.charAt(0) == "s") |
| 1762 |
pos += 'bottom:' + (m[1] + plotOffset.bottom) + 'px;'; |
| 1763 |
if (p.charAt(1) == "e") |
| 1764 |
pos += 'right:' + (m[0] + plotOffset.right) + 'px;'; |
| 1765 |
else if (p.charAt(1) == "w") |
| 1766 |
pos += 'left:' + (m[0] + plotOffset.left) + 'px;'; |
| 1767 |
var legend = $('<div class="legend">' + table.replace('style="', 'style="position:absolute;' + pos +';') + '</div>').appendTo(placeholder); |
| 1768 |
if (options.legend.backgroundOpacity != 0.0) { |
| 1769 |
// put in the transparent background
|
| 1770 |
// separately to avoid blended labels and
|
| 1771 |
// label boxes
|
| 1772 |
var c = options.legend.backgroundColor;
|
| 1773 |
if (c == null) { |
| 1774 |
c = options.grid.backgroundColor; |
| 1775 |
if (c && typeof c == "string") |
| 1776 |
c = $.color.parse(c);
|
| 1777 |
else
|
| 1778 |
c = $.color.extract(legend, 'background-color'); |
| 1779 |
c.a = 1;
|
| 1780 |
c = c.toString(); |
| 1781 |
} |
| 1782 |
var div = legend.children();
|
| 1783 |
$('<div style="position:absolute;width:' + div.width() + 'px;height:' + div.height() + 'px;' + pos +'background-color:' + c + ';"> </div>').prependTo(legend).css('opacity', options.legend.backgroundOpacity); |
| 1784 |
} |
| 1785 |
} |
| 1786 |
} |
| 1787 |
|
| 1788 |
|
| 1789 |
// interactive features
|
| 1790 |
|
| 1791 |
var highlights = [],
|
| 1792 |
redrawTimeout = null;
|
| 1793 |
|
| 1794 |
// returns the data item the mouse is over, or null if none is found
|
| 1795 |
function findNearbyItem(mouseX, mouseY, seriesFilter) { |
| 1796 |
var maxDistance = options.grid.mouseActiveRadius,
|
| 1797 |
smallestDistance = maxDistance * maxDistance + 1,
|
| 1798 |
item = null, foundPoint = false, i, j; |
| 1799 |
|
| 1800 |
for (i = 0; i < series.length; ++i) { |
| 1801 |
if (!seriesFilter(series[i]))
|
| 1802 |
continue;
|
| 1803 |
|
| 1804 |
var s = series[i],
|
| 1805 |
axisx = s.xaxis, |
| 1806 |
axisy = s.yaxis, |
| 1807 |
points = s.datapoints.points, |
| 1808 |
ps = s.datapoints.pointsize, |
| 1809 |
mx = axisx.c2p(mouseX), // precompute some stuff to make the loop faster
|
| 1810 |
my = axisy.c2p(mouseY), |
| 1811 |
maxx = maxDistance / axisx.scale, |
| 1812 |
maxy = maxDistance / axisy.scale; |
| 1813 |
|
| 1814 |
if (s.lines.show || s.points.show) {
|
| 1815 |
for (j = 0; j < points.length; j += ps) { |
| 1816 |
var x = points[j], y = points[j + 1]; |
| 1817 |
if (x == null) |
| 1818 |
continue;
|
| 1819 |
|
| 1820 |
// For points and lines, the cursor must be within a
|
| 1821 |
// certain distance to the data point
|
| 1822 |
if (x - mx > maxx || x - mx < -maxx ||
|
| 1823 |
y - my > maxy || y - my < -maxy) |
| 1824 |
continue;
|
| 1825 |
|
| 1826 |
// We have to calculate distances in pixels, not in
|
| 1827 |
// data units, because the scales of the axes may be different
|
| 1828 |
var dx = Math.abs(axisx.p2c(x) - mouseX),
|
| 1829 |
dy = Math.abs(axisy.p2c(y) - mouseY), |
| 1830 |
dist = dx * dx + dy * dy; // we save the sqrt
|
| 1831 |
|
| 1832 |
// use <= to ensure last point takes precedence
|
| 1833 |
// (last generally means on top of)
|
| 1834 |
if (dist <= smallestDistance) {
|
| 1835 |
smallestDistance = dist; |
| 1836 |
item = [i, j / ps]; |
| 1837 |
} |
| 1838 |
} |
| 1839 |
} |
| 1840 |
|
| 1841 |
if (s.bars.show && !item) { // no other point can be nearby |
| 1842 |
var barLeft = s.bars.align == "left" ? 0 : -s.bars.barWidth/2, |
| 1843 |
barRight = barLeft + s.bars.barWidth; |
| 1844 |
|
| 1845 |
for (j = 0; j < points.length; j += ps) { |
| 1846 |
var x = points[j], y = points[j + 1], b = points[j + 2]; |
| 1847 |
if (x == null) |
| 1848 |
continue;
|
| 1849 |
|
| 1850 |
// for a bar graph, the cursor must be inside the bar
|
| 1851 |
if (series[i].bars.horizontal ?
|
| 1852 |
(mx <= Math.max(b, x) && mx >= Math.min(b, x) && |
| 1853 |
my >= y + barLeft && my <= y + barRight) : |
| 1854 |
(mx >= x + barLeft && mx <= x + barRight && |
| 1855 |
my >= Math.min(b, y) && my <= Math.max(b, y))) |
| 1856 |
item = [i, j / ps]; |
| 1857 |
} |
| 1858 |
} |
| 1859 |
} |
| 1860 |
|
| 1861 |
if (item) {
|
| 1862 |
i = item[0];
|
| 1863 |
j = item[1];
|
| 1864 |
ps = series[i].datapoints.pointsize; |
| 1865 |
|
| 1866 |
return { datapoint: series[i].datapoints.points.slice(j * ps, (j + 1) * ps), |
| 1867 |
dataIndex: j,
|
| 1868 |
series: series[i],
|
| 1869 |
seriesIndex: i };
|
| 1870 |
} |
| 1871 |
|
| 1872 |
return null; |
| 1873 |
} |
| 1874 |
|
| 1875 |
function onMouseMove(e) { |
| 1876 |
if (options.grid.hoverable)
|
| 1877 |
triggerClickHoverEvent("plothover", e,
|
| 1878 |
function (s) { return s["hoverable"] != false; }); |
| 1879 |
} |
| 1880 |
|
| 1881 |
function onClick(e) { |
| 1882 |
triggerClickHoverEvent("plotclick", e,
|
| 1883 |
function (s) { return s["clickable"] != false; }); |
| 1884 |
} |
| 1885 |
|
| 1886 |
// trigger click or hover event (they send the same parameters
|
| 1887 |
// so we share their code)
|
| 1888 |
function triggerClickHoverEvent(eventname, event, seriesFilter) { |
| 1889 |
var offset = eventHolder.offset(),
|
| 1890 |
pos = { pageX: event.pageX, pageY: event.pageY },
|
| 1891 |
canvasX = event.pageX - offset.left - plotOffset.left, |
| 1892 |
canvasY = event.pageY - offset.top - plotOffset.top; |
| 1893 |
|
| 1894 |
if (axes.xaxis.used)
|
| 1895 |
pos.x = axes.xaxis.c2p(canvasX); |
| 1896 |
if (axes.yaxis.used)
|
| 1897 |
pos.y = axes.yaxis.c2p(canvasY); |
| 1898 |
if (axes.x2axis.used)
|
| 1899 |
pos.x2 = axes.x2axis.c2p(canvasX); |
| 1900 |
if (axes.y2axis.used)
|
| 1901 |
pos.y2 = axes.y2axis.c2p(canvasY); |
| 1902 |
|
| 1903 |
var item = findNearbyItem(canvasX, canvasY, seriesFilter);
|
| 1904 |
|
| 1905 |
if (item) {
|
| 1906 |
// fill in mouse pos for any listeners out there
|
| 1907 |
item.pageX = parseInt(item.series.xaxis.p2c(item.datapoint[0]) + offset.left + plotOffset.left);
|
| 1908 |
item.pageY = parseInt(item.series.yaxis.p2c(item.datapoint[1]) + offset.top + plotOffset.top);
|
| 1909 |
} |
| 1910 |
|
| 1911 |
if (options.grid.autoHighlight) {
|
| 1912 |
// clear auto-highlights
|
| 1913 |
for (var i = 0; i < highlights.length; ++i) { |
| 1914 |
var h = highlights[i];
|
| 1915 |
if (h.auto == eventname &&
|
| 1916 |
!(item && h.series == item.series && h.point == item.datapoint)) |
| 1917 |
unhighlight(h.series, h.point); |
| 1918 |
} |
| 1919 |
|
| 1920 |
if (item)
|
| 1921 |
highlight(item.series, item.datapoint, eventname); |
| 1922 |
} |
| 1923 |
|
| 1924 |
placeholder.trigger(eventname, [ pos, item ]); |
| 1925 |
} |
| 1926 |
|
| 1927 |
function triggerRedrawOverlay() { |
| 1928 |
if (!redrawTimeout)
|
| 1929 |
redrawTimeout = setTimeout(drawOverlay, 30);
|
| 1930 |
} |
| 1931 |
|
| 1932 |
function drawOverlay() { |
| 1933 |
redrawTimeout = null;
|
| 1934 |
|
| 1935 |
// draw highlights
|
| 1936 |
octx.save(); |
| 1937 |
octx.clearRect(0, 0, canvasWidth, canvasHeight); |
| 1938 |
octx.translate(plotOffset.left, plotOffset.top); |
| 1939 |
|
| 1940 |
var i, hi;
|
| 1941 |
for (i = 0; i < highlights.length; ++i) { |
| 1942 |
hi = highlights[i]; |
| 1943 |
|
| 1944 |
if (hi.series.bars.show)
|
| 1945 |
drawBarHighlight(hi.series, hi.point); |
| 1946 |
else
|
| 1947 |
drawPointHighlight(hi.series, hi.point); |
| 1948 |
} |
| 1949 |
octx.restore(); |
| 1950 |
|
| 1951 |
executeHooks(hooks.drawOverlay, [octx]); |
| 1952 |
} |
| 1953 |
|
| 1954 |
function highlight(s, point, auto) { |
| 1955 |
if (typeof s == "number") |
| 1956 |
s = series[s]; |
| 1957 |
|
| 1958 |
if (typeof point == "number") |
| 1959 |
point = s.data[point]; |
| 1960 |
|
| 1961 |
var i = indexOfHighlight(s, point);
|
| 1962 |
if (i == -1) { |
| 1963 |
highlights.push({ series: s, point: point, auto: auto });
|
| 1964 |
|
| 1965 |
triggerRedrawOverlay(); |
| 1966 |
} |
| 1967 |
else if (!auto) |
| 1968 |
highlights[i].auto = false;
|
| 1969 |
} |
| 1970 |
|
| 1971 |
function unhighlight(s, point) { |
| 1972 |
if (s == null && point == null) { |
| 1973 |
highlights = []; |
| 1974 |
triggerRedrawOverlay(); |
| 1975 |
} |
| 1976 |
|
| 1977 |
if (typeof s == "number") |
| 1978 |
s = series[s]; |
| 1979 |
|
| 1980 |
if (typeof point == "number") |
| 1981 |
point = s.data[point]; |
| 1982 |
|
| 1983 |
var i = indexOfHighlight(s, point);
|
| 1984 |
if (i != -1) { |
| 1985 |
highlights.splice(i, 1);
|
| 1986 |
|
| 1987 |
triggerRedrawOverlay(); |
| 1988 |
} |
| 1989 |
} |
| 1990 |
|
| 1991 |
function indexOfHighlight(s, p) { |
| 1992 |
for (var i = 0; i < highlights.length; ++i) { |
| 1993 |
var h = highlights[i];
|
| 1994 |
if (h.series == s && h.point[0] == p[0] |
| 1995 |
&& h.point[1] == p[1]) |
| 1996 |
return i;
|
| 1997 |
} |
| 1998 |
return -1; |
| 1999 |
} |
| 2000 |
|
| 2001 |
function drawPointHighlight(series, point) { |
| 2002 |
var x = point[0], y = point[1], |
| 2003 |
axisx = series.xaxis, axisy = series.yaxis; |
| 2004 |
|
| 2005 |
if (x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max)
|
| 2006 |
return;
|
| 2007 |
|
| 2008 |
var pointRadius = series.points.radius + series.points.lineWidth / 2; |
| 2009 |
octx.lineWidth = pointRadius; |
| 2010 |
octx.strokeStyle = $.color.parse(series.color).scale('a', 0.5).toString(); |
| 2011 |
var radius = 1.5 * pointRadius; |
| 2012 |
octx.beginPath(); |
| 2013 |
octx.arc(axisx.p2c(x), axisy.p2c(y), radius, 0, 2 * Math.PI, false); |
| 2014 |
octx.stroke(); |
| 2015 |
} |
| 2016 |
|
| 2017 |
function drawBarHighlight(series, point) { |
| 2018 |
octx.lineWidth = series.bars.lineWidth; |
| 2019 |
octx.strokeStyle = $.color.parse(series.color).scale('a', 0.5).toString(); |
| 2020 |
var fillStyle = $.color.parse(series.color).scale('a', 0.5).toString(); |
| 2021 |
var barLeft = series.bars.align == "left" ? 0 : -series.bars.barWidth/2; |
| 2022 |
drawBar(point[0], point[1], point[2] || 0, barLeft, barLeft + series.bars.barWidth, |
| 2023 |
0, function () { return fillStyle; }, series.xaxis, series.yaxis, octx, series.bars.horizontal); |
| 2024 |
} |
| 2025 |
|
| 2026 |
function getColorOrGradient(spec, bottom, top, defaultColor) { |
| 2027 |
if (typeof spec == "string") |
| 2028 |
return spec;
|
| 2029 |
else {
|
| 2030 |
// assume this is a gradient spec; IE currently only
|
| 2031 |
// supports a simple vertical gradient properly, so that's
|
| 2032 |
// what we support too
|
| 2033 |
var gradient = ctx.createLinearGradient(0, top, 0, bottom); |
| 2034 |
|
| 2035 |
for (var i = 0, l = spec.colors.length; i < l; ++i) { |
| 2036 |
var c = spec.colors[i];
|
| 2037 |
if (typeof c != "string") { |
| 2038 |
c = $.color.parse(defaultColor).scale('rgb', c.brightness); |
| 2039 |
c.a *= c.opacity; |
| 2040 |
c = c.toString(); |
| 2041 |
} |
| 2042 |
gradient.addColorStop(i / (l - 1), c);
|
| 2043 |
} |
| 2044 |
|
| 2045 |
return gradient;
|
| 2046 |
} |
| 2047 |
} |
| 2048 |
} |
| 2049 |
|
| 2050 |
$.plot = function(placeholder, data, options) { |
| 2051 |
var plot = new Plot($(placeholder), data, options, $.plot.plugins); |
| 2052 |
/*var t0 = new Date();
|
| 2053 |
var t1 = new Date();
|
| 2054 |
var tstr = "time used (msecs): " + (t1.getTime() - t0.getTime())
|
| 2055 |
if (window.console)
|
| 2056 |
console.log(tstr);
|
| 2057 |
else
|
| 2058 |
alert(tstr);*/
|
| 2059 |
return plot;
|
| 2060 |
}; |
| 2061 |
|
| 2062 |
$.plot.plugins = [];
|
| 2063 |
|
| 2064 |
// returns a string with the date d formatted according to fmt
|
| 2065 |
$.plot.formatDate = function(d, fmt, monthNames) { |
| 2066 |
var leftPad = function(n) { |
| 2067 |
n = "" + n;
|
| 2068 |
return n.length == 1 ? "0" + n : n; |
| 2069 |
}; |
| 2070 |
|
| 2071 |
var r = [];
|
| 2072 |
var escape = false; |
| 2073 |
var hours = d.getUTCHours();
|
| 2074 |
var isAM = hours < 12; |
| 2075 |
if (monthNames == null) |
| 2076 |
monthNames = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]; |
| 2077 |
|
| 2078 |
if (fmt.search(/%p|%P/) != -1) { |
| 2079 |
if (hours > 12) { |
| 2080 |
hours = hours - 12;
|
| 2081 |
} else if (hours == 0) { |
| 2082 |
hours = 12;
|
| 2083 |
} |
| 2084 |
} |
| 2085 |
for (var i = 0; i < fmt.length; ++i) { |
| 2086 |
var c = fmt.charAt(i);
|
| 2087 |
|
| 2088 |
if (escape) {
|
| 2089 |
switch (c) {
|
| 2090 |
case 'h': c = "" + hours; break; |
| 2091 |
case 'H': c = leftPad(hours); break; |
| 2092 |
case 'M': c = leftPad(d.getUTCMinutes()); break; |
| 2093 |
case 'S': c = leftPad(d.getUTCSeconds()); break; |
| 2094 |
case 'd': c = "" + d.getUTCDate(); break; |
| 2095 |
case 'm': c = "" + (d.getUTCMonth() + 1); break; |
| 2096 |
case 'y': c = "" + d.getUTCFullYear(); break; |
| 2097 |
case 'b': c = "" + monthNames[d.getUTCMonth()]; break; |
| 2098 |
case 'p': c = (isAM) ? ("" + "am") : ("" + "pm"); break; |
| 2099 |
case 'P': c = (isAM) ? ("" + "AM") : ("" + "PM"); break; |
| 2100 |
} |
| 2101 |
r.push(c); |
| 2102 |
escape = false;
|
| 2103 |
} |
| 2104 |
else {
|
| 2105 |
if (c == "%") |
| 2106 |
escape = true;
|
| 2107 |
else
|
| 2108 |
r.push(c); |
| 2109 |
} |
| 2110 |
} |
| 2111 |
return r.join(""); |
| 2112 |
}; |
| 2113 |
|
| 2114 |
// round to nearby lower multiple of base
|
| 2115 |
function floorInBase(n, base) { |
| 2116 |
return base * Math.floor(n / base);
|
| 2117 |
} |
| 2118 |
|
| 2119 |
})(jQuery); |