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vikas |
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/*! Javascript plotting library for jQuery, v. 0.7.
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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 1.1.
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*
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* Inspiration from jQuery color animation plugin by John Resig.
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*
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* Released under the MIT license by Ole Laursen, October 2009.
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*
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* Examples:
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*
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* $.color.parse("#fff").scale('rgb', 0.25).add('a', -0.5).toString()
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* var c = $.color.extract($("#mydiv"), 'background-color');
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* console.log(c.r, c.g, c.b, c.a);
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* $.color.make(100, 50, 25, 0.4).toString() // returns "rgba(100,50,25,0.4)"
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*
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* Note that .scale() and .add() return the same modified object
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* instead of making a new one.
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*
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* V. 1.1: Fix error handling so e.g. parsing an empty string does
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* produce a color rather than just crashing.
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*/
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(function(B){B.color={};B.color.make=function(F,E,C,D){var G={};G.r=F||0;G.g=E||0;G.b=C||0;G.a=D!=null?D:1;G.add=function(J,I){for(var H=0;H<J.length;++H){G[J.charAt(H)]+=I}return G.normalize()};G.scale=function(J,I){for(var H=0;H<J.length;++H){G[J.charAt(H)]*=I}return G.normalize()};G.toString=function(){if(G.a>=1){return"rgb("+[G.r,G.g,G.b].join(",")+")"}else{return"rgba("+[G.r,G.g,G.b,G.a].join(",")+")"}};G.normalize=function(){function H(J,K,I){return K<J?J:(K>I?I:K)}G.r=H(0,parseInt(G.r),255);G.g=H(0,parseInt(G.g),255);G.b=H(0,parseInt(G.b),255);G.a=H(0,G.a,1);return G};G.clone=function(){return B.color.make(G.r,G.b,G.g,G.a)};return G.normalize()};B.color.extract=function(D,C){var E;do{E=D.css(C).toLowerCase();if(E!=""&&E!="transparent"){break}D=D.parent()}while(!B.nodeName(D.get(0),"body"));if(E=="rgba(0, 0, 0, 0)"){E="transparent"}return B.color.parse(E)};B.color.parse=function(F){var E,C=B.color.make;if(E=/rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(F)){return C(parseInt(E[1],10),parseInt(E[2],10),parseInt(E[3],10))}if(E=/rgba\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(F)){return C(parseInt(E[1],10),parseInt(E[2],10),parseInt(E[3],10),parseFloat(E[4]))}if(E=/rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(F)){return C(parseFloat(E[1])*2.55,parseFloat(E[2])*2.55,parseFloat(E[3])*2.55)}if(E=/rgba\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(F)){return C(parseFloat(E[1])*2.55,parseFloat(E[2])*2.55,parseFloat(E[3])*2.55,parseFloat(E[4]))}if(E=/#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(F)){return C(parseInt(E[1],16),parseInt(E[2],16),parseInt(E[3],16))}if(E=/#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(F)){return C(parseInt(E[1]+E[1],16),parseInt(E[2]+E[2],16),parseInt(E[3]+E[3],16))}var D=B.trim(F).toLowerCase();if(D=="transparent"){return C(255,255,255,0)}else{E=A[D]||[0,0,0];return C(E[0],E[1],E[2])}};var A={aqua:[0,255,255],azure:[240,255,255],beige:[245,245,220],black:[0,0,0],blue:[0,0,255],brown:[165,42,42],cyan:[0,255,255],darkblue:[0,0,139],darkcyan:[0,139,139],darkgrey:[169,169,169],darkgreen:[0,100,0],darkkhaki:[189,183,107],darkmagenta:[139,0,139],darkolivegreen:[85,107,47],darkorange:[255,140,0],darkorchid:[153,50,204],darkred:[139,0,0],darksalmon:[233,150,122],darkviolet:[148,0,211],fuchsia:[255,0,255],gold:[255,215,0],green:[0,128,0],indigo:[75,0,130],khaki:[240,230,140],lightblue:[173,216,230],lightcyan:[224,255,255],lightgreen:[144,238,144],lightgrey:[211,211,211],lightpink:[255,182,193],lightyellow:[255,255,224],lime:[0,255,0],magenta:[255,0,255],maroon:[128,0,0],navy:[0,0,128],olive:[128,128,0],orange:[255,165,0],pink:[255,192,203],purple:[128,0,128],violet:[128,0,128],red:[255,0,0],silver:[192,192,192],white:[255,255,255],yellow:[255,255,0]}})(jQuery);
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// the actual Flot code
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(function($) {
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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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show: null, // null = auto-detect, true = always, false = never
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position: "bottom", // or "top"
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mode: null, // null or "time"
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color: null, // base color, labels, ticks
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tickColor: null, // possibly different color of ticks, e.g. "rgba(0,0,0,0.15)"
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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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reserveSpace: null, // whether to reserve space even if axis isn't shown
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tickLength: null, // size in pixels of ticks, or "full" for whole line
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alignTicksWithAxis: null, // axis number or null for no sync
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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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position: "left" // or "right"
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},
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xaxes: [],
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yaxes: [],
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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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symbol: "circle" // or callback
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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
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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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borderColor: null, // set if different from the grid color
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tickColor: null, // color for the ticks, e.g. "rgba(0,0,0,0.15)"
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labelMargin: 5, // in pixels
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axisMargin: 8, // in pixels
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borderWidth: 2, // in pixels
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minBorderMargin: null, // in pixels, null means taken from points radius
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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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xaxes = [], yaxes = [],
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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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drawSeries: [],
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draw: [],
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bindEvents: [],
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drawOverlay: [],
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shutdown: []
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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 () {
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var res = {}, i;
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$.each(xaxes.concat(yaxes), function (_, axis) {
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if (axis)
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res[axis.direction + (axis.n != 1 ? axis.n : "") + "axis"] = axis;
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});
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return res;
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};
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plot.getXAxes = function () { return xaxes; };
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plot.getYAxes = function () { return yaxes; };
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plot.c2p = canvasToAxisCoords;
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plot.p2c = axisToCanvasCoords;
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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 {
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left: parseInt(xaxes[axisNumber(point, "x") - 1].p2c(+point.x) + plotOffset.left),
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top: parseInt(yaxes[axisNumber(point, "y") - 1].p2c(+point.y) + plotOffset.top)
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};
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};
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plot.shutdown = shutdown;
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plot.resize = function () {
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getCanvasDimensions();
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resizeCanvas(canvas);
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resizeCanvas(overlay);
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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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setupCanvases();
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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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$.extend(true, options, p.options);
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}
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}
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function parseOptions(opts) {
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var i;
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$.extend(true, options, opts);
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if (options.xaxis.color == null)
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options.xaxis.color = options.grid.color;
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if (options.yaxis.color == null)
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options.yaxis.color = options.grid.color;
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if (options.xaxis.tickColor == null) // backwards-compatibility
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options.xaxis.tickColor = options.grid.tickColor;
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if (options.yaxis.tickColor == null) // backwards-compatibility
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options.yaxis.tickColor = options.grid.tickColor;
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if (options.grid.borderColor == null)
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options.grid.borderColor = options.grid.color;
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if (options.grid.tickColor == null)
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options.grid.tickColor = $.color.parse(options.grid.color).scale('a', 0.22).toString();
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// fill in defaults in axes, copy at least always the
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// first as the rest of the code assumes it'll be there
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for (i = 0; i < Math.max(1, options.xaxes.length); ++i)
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options.xaxes[i] = $.extend(true, {}, options.xaxis, options.xaxes[i]);
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for (i = 0; i < Math.max(1, options.yaxes.length); ++i)
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options.yaxes[i] = $.extend(true, {}, options.yaxis, options.yaxes[i]);
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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.x2axis) {
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options.xaxes[1] = $.extend(true, {}, options.xaxis, options.x2axis);
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options.xaxes[1].position = "top";
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}
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if (options.y2axis) {
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options.yaxes[1] = $.extend(true, {}, options.yaxis, options.y2axis);
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options.yaxes[1].position = "right";
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}
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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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276 |
if (options.lines)
|
|
|
277 |
$.extend(true, options.series.lines, options.lines);
|
|
|
278 |
if (options.points)
|
|
|
279 |
$.extend(true, options.series.points, options.points);
|
|
|
280 |
if (options.bars)
|
|
|
281 |
$.extend(true, options.series.bars, options.bars);
|
|
|
282 |
if (options.shadowSize != null)
|
|
|
283 |
options.series.shadowSize = options.shadowSize;
|
|
|
284 |
|
|
|
285 |
// save options on axes for future reference
|
|
|
286 |
for (i = 0; i < options.xaxes.length; ++i)
|
|
|
287 |
getOrCreateAxis(xaxes, i + 1).options = options.xaxes[i];
|
|
|
288 |
for (i = 0; i < options.yaxes.length; ++i)
|
|
|
289 |
getOrCreateAxis(yaxes, i + 1).options = options.yaxes[i];
|
|
|
290 |
|
|
|
291 |
// add hooks from options
|
|
|
292 |
for (var n in hooks)
|
|
|
293 |
if (options.hooks[n] && options.hooks[n].length)
|
|
|
294 |
hooks[n] = hooks[n].concat(options.hooks[n]);
|
|
|
295 |
|
|
|
296 |
executeHooks(hooks.processOptions, [options]);
|
|
|
297 |
}
|
|
|
298 |
|
|
|
299 |
function setData(d) {
|
|
|
300 |
series = parseData(d);
|
|
|
301 |
fillInSeriesOptions();
|
|
|
302 |
processData();
|
|
|
303 |
}
|
|
|
304 |
|
|
|
305 |
function parseData(d) {
|
|
|
306 |
var res = [];
|
|
|
307 |
for (var i = 0; i < d.length; ++i) {
|
|
|
308 |
var s = $.extend(true, {}, options.series);
|
|
|
309 |
|
|
|
310 |
if (d[i].data != null) {
|
|
|
311 |
s.data = d[i].data; // move the data instead of deep-copy
|
|
|
312 |
delete d[i].data;
|
|
|
313 |
|
|
|
314 |
$.extend(true, s, d[i]);
|
|
|
315 |
|
|
|
316 |
d[i].data = s.data;
|
|
|
317 |
}
|
|
|
318 |
else
|
|
|
319 |
s.data = d[i];
|
|
|
320 |
res.push(s);
|
|
|
321 |
}
|
|
|
322 |
|
|
|
323 |
return res;
|
|
|
324 |
}
|
|
|
325 |
|
|
|
326 |
function axisNumber(obj, coord) {
|
|
|
327 |
var a = obj[coord + "axis"];
|
|
|
328 |
if (typeof a == "object") // if we got a real axis, extract number
|
|
|
329 |
a = a.n;
|
|
|
330 |
if (typeof a != "number")
|
|
|
331 |
a = 1; // default to first axis
|
|
|
332 |
return a;
|
|
|
333 |
}
|
|
|
334 |
|
|
|
335 |
function allAxes() {
|
|
|
336 |
// return flat array without annoying null entries
|
|
|
337 |
return $.grep(xaxes.concat(yaxes), function (a) { return a; });
|
|
|
338 |
}
|
|
|
339 |
|
|
|
340 |
function canvasToAxisCoords(pos) {
|
|
|
341 |
// return an object with x/y corresponding to all used axes
|
|
|
342 |
var res = {}, i, axis;
|
|
|
343 |
for (i = 0; i < xaxes.length; ++i) {
|
|
|
344 |
axis = xaxes[i];
|
|
|
345 |
if (axis && axis.used)
|
|
|
346 |
res["x" + axis.n] = axis.c2p(pos.left);
|
|
|
347 |
}
|
|
|
348 |
|
|
|
349 |
for (i = 0; i < yaxes.length; ++i) {
|
|
|
350 |
axis = yaxes[i];
|
|
|
351 |
if (axis && axis.used)
|
|
|
352 |
res["y" + axis.n] = axis.c2p(pos.top);
|
|
|
353 |
}
|
|
|
354 |
|
|
|
355 |
if (res.x1 !== undefined)
|
|
|
356 |
res.x = res.x1;
|
|
|
357 |
if (res.y1 !== undefined)
|
|
|
358 |
res.y = res.y1;
|
|
|
359 |
|
|
|
360 |
return res;
|
|
|
361 |
}
|
|
|
362 |
|
|
|
363 |
function axisToCanvasCoords(pos) {
|
|
|
364 |
// get canvas coords from the first pair of x/y found in pos
|
|
|
365 |
var res = {}, i, axis, key;
|
|
|
366 |
|
|
|
367 |
for (i = 0; i < xaxes.length; ++i) {
|
|
|
368 |
axis = xaxes[i];
|
|
|
369 |
if (axis && axis.used) {
|
|
|
370 |
key = "x" + axis.n;
|
|
|
371 |
if (pos[key] == null && axis.n == 1)
|
|
|
372 |
key = "x";
|
|
|
373 |
|
|
|
374 |
if (pos[key] != null) {
|
|
|
375 |
res.left = axis.p2c(pos[key]);
|
|
|
376 |
break;
|
|
|
377 |
}
|
|
|
378 |
}
|
|
|
379 |
}
|
|
|
380 |
|
|
|
381 |
for (i = 0; i < yaxes.length; ++i) {
|
|
|
382 |
axis = yaxes[i];
|
|
|
383 |
if (axis && axis.used) {
|
|
|
384 |
key = "y" + axis.n;
|
|
|
385 |
if (pos[key] == null && axis.n == 1)
|
|
|
386 |
key = "y";
|
|
|
387 |
|
|
|
388 |
if (pos[key] != null) {
|
|
|
389 |
res.top = axis.p2c(pos[key]);
|
|
|
390 |
break;
|
|
|
391 |
}
|
|
|
392 |
}
|
|
|
393 |
}
|
|
|
394 |
|
|
|
395 |
return res;
|
|
|
396 |
}
|
|
|
397 |
|
|
|
398 |
function getOrCreateAxis(axes, number) {
|
|
|
399 |
if (!axes[number - 1])
|
|
|
400 |
axes[number - 1] = {
|
|
|
401 |
n: number, // save the number for future reference
|
|
|
402 |
direction: axes == xaxes ? "x" : "y",
|
|
|
403 |
options: $.extend(true, {}, axes == xaxes ? options.xaxis : options.yaxis)
|
|
|
404 |
};
|
|
|
405 |
|
|
|
406 |
return axes[number - 1];
|
|
|
407 |
}
|
|
|
408 |
|
|
|
409 |
function fillInSeriesOptions() {
|
|
|
410 |
var i;
|
|
|
411 |
|
|
|
412 |
// collect what we already got of colors
|
|
|
413 |
var neededColors = series.length,
|
|
|
414 |
usedColors = [],
|
|
|
415 |
assignedColors = [];
|
|
|
416 |
for (i = 0; i < series.length; ++i) {
|
|
|
417 |
var sc = series[i].color;
|
|
|
418 |
if (sc != null) {
|
|
|
419 |
--neededColors;
|
|
|
420 |
if (typeof sc == "number")
|
|
|
421 |
assignedColors.push(sc);
|
|
|
422 |
else
|
|
|
423 |
usedColors.push($.color.parse(series[i].color));
|
|
|
424 |
}
|
|
|
425 |
}
|
|
|
426 |
|
|
|
427 |
// we might need to generate more colors if higher indices
|
|
|
428 |
// are assigned
|
|
|
429 |
for (i = 0; i < assignedColors.length; ++i) {
|
|
|
430 |
neededColors = Math.max(neededColors, assignedColors[i] + 1);
|
|
|
431 |
}
|
|
|
432 |
|
|
|
433 |
// produce colors as needed
|
|
|
434 |
var colors = [], variation = 0;
|
|
|
435 |
i = 0;
|
|
|
436 |
while (colors.length < neededColors) {
|
|
|
437 |
var c;
|
|
|
438 |
if (options.colors.length == i) // check degenerate case
|
|
|
439 |
c = $.color.make(100, 100, 100);
|
|
|
440 |
else
|
|
|
441 |
c = $.color.parse(options.colors[i]);
|
|
|
442 |
|
|
|
443 |
// vary color if needed
|
|
|
444 |
var sign = variation % 2 == 1 ? -1 : 1;
|
|
|
445 |
c.scale('rgb', 1 + sign * Math.ceil(variation / 2) * 0.2)
|
|
|
446 |
|
|
|
447 |
// FIXME: if we're getting to close to something else,
|
|
|
448 |
// we should probably skip this one
|
|
|
449 |
colors.push(c);
|
|
|
450 |
|
|
|
451 |
++i;
|
|
|
452 |
if (i >= options.colors.length) {
|
|
|
453 |
i = 0;
|
|
|
454 |
++variation;
|
|
|
455 |
}
|
|
|
456 |
}
|
|
|
457 |
|
|
|
458 |
// fill in the options
|
|
|
459 |
var colori = 0, s;
|
|
|
460 |
for (i = 0; i < series.length; ++i) {
|
|
|
461 |
s = series[i];
|
|
|
462 |
|
|
|
463 |
// assign colors
|
|
|
464 |
if (s.color == null) {
|
|
|
465 |
s.color = colors[colori].toString();
|
|
|
466 |
++colori;
|
|
|
467 |
}
|
|
|
468 |
else if (typeof s.color == "number")
|
|
|
469 |
s.color = colors[s.color].toString();
|
|
|
470 |
|
|
|
471 |
// turn on lines automatically in case nothing is set
|
|
|
472 |
if (s.lines.show == null) {
|
|
|
473 |
var v, show = true;
|
|
|
474 |
for (v in s)
|
|
|
475 |
if (s[v] && s[v].show) {
|
|
|
476 |
show = false;
|
|
|
477 |
break;
|
|
|
478 |
}
|
|
|
479 |
if (show)
|
|
|
480 |
s.lines.show = true;
|
|
|
481 |
}
|
|
|
482 |
|
|
|
483 |
// setup axes
|
|
|
484 |
s.xaxis = getOrCreateAxis(xaxes, axisNumber(s, "x"));
|
|
|
485 |
s.yaxis = getOrCreateAxis(yaxes, axisNumber(s, "y"));
|
|
|
486 |
}
|
|
|
487 |
}
|
|
|
488 |
|
|
|
489 |
function processData() {
|
|
|
490 |
var topSentry = Number.POSITIVE_INFINITY,
|
|
|
491 |
bottomSentry = Number.NEGATIVE_INFINITY,
|
|
|
492 |
fakeInfinity = Number.MAX_VALUE,
|
|
|
493 |
i, j, k, m, length,
|
|
|
494 |
s, points, ps, x, y, axis, val, f, p;
|
|
|
495 |
|
|
|
496 |
function updateAxis(axis, min, max) {
|
|
|
497 |
if (min < axis.datamin && min != -fakeInfinity)
|
|
|
498 |
axis.datamin = min;
|
|
|
499 |
if (max > axis.datamax && max != fakeInfinity)
|
|
|
500 |
axis.datamax = max;
|
|
|
501 |
}
|
|
|
502 |
|
|
|
503 |
$.each(allAxes(), function (_, axis) {
|
|
|
504 |
// init axis
|
|
|
505 |
axis.datamin = topSentry;
|
|
|
506 |
axis.datamax = bottomSentry;
|
|
|
507 |
axis.used = false;
|
|
|
508 |
});
|
|
|
509 |
|
|
|
510 |
for (i = 0; i < series.length; ++i) {
|
|
|
511 |
s = series[i];
|
|
|
512 |
s.datapoints = { points: [] };
|
|
|
513 |
|
|
|
514 |
executeHooks(hooks.processRawData, [ s, s.data, s.datapoints ]);
|
|
|
515 |
}
|
|
|
516 |
|
|
|
517 |
// first pass: clean and copy data
|
|
|
518 |
for (i = 0; i < series.length; ++i) {
|
|
|
519 |
s = series[i];
|
|
|
520 |
|
|
|
521 |
var data = s.data, format = s.datapoints.format;
|
|
|
522 |
|
|
|
523 |
if (!format) {
|
|
|
524 |
format = [];
|
|
|
525 |
// find out how to copy
|
|
|
526 |
format.push({ x: true, number: true, required: true });
|
|
|
527 |
format.push({ y: true, number: true, required: true });
|
|
|
528 |
|
|
|
529 |
if (s.bars.show || (s.lines.show && s.lines.fill)) {
|
|
|
530 |
format.push({ y: true, number: true, required: false, defaultValue: 0 });
|
|
|
531 |
if (s.bars.horizontal) {
|
|
|
532 |
delete format[format.length - 1].y;
|
|
|
533 |
format[format.length - 1].x = true;
|
|
|
534 |
}
|
|
|
535 |
}
|
|
|
536 |
|
|
|
537 |
s.datapoints.format = format;
|
|
|
538 |
}
|
|
|
539 |
|
|
|
540 |
if (s.datapoints.pointsize != null)
|
|
|
541 |
continue; // already filled in
|
|
|
542 |
|
|
|
543 |
s.datapoints.pointsize = format.length;
|
|
|
544 |
|
|
|
545 |
ps = s.datapoints.pointsize;
|
|
|
546 |
points = s.datapoints.points;
|
|
|
547 |
|
|
|
548 |
insertSteps = s.lines.show && s.lines.steps;
|
|
|
549 |
s.xaxis.used = s.yaxis.used = true;
|
|
|
550 |
|
|
|
551 |
for (j = k = 0; j < data.length; ++j, k += ps) {
|
|
|
552 |
p = data[j];
|
|
|
553 |
|
|
|
554 |
var nullify = p == null;
|
|
|
555 |
if (!nullify) {
|
|
|
556 |
for (m = 0; m < ps; ++m) {
|
|
|
557 |
val = p[m];
|
|
|
558 |
f = format[m];
|
|
|
559 |
|
|
|
560 |
if (f) {
|
|
|
561 |
if (f.number && val != null) {
|
|
|
562 |
val = +val; // convert to number
|
|
|
563 |
if (isNaN(val))
|
|
|
564 |
val = null;
|
|
|
565 |
else if (val == Infinity)
|
|
|
566 |
val = fakeInfinity;
|
|
|
567 |
else if (val == -Infinity)
|
|
|
568 |
val = -fakeInfinity;
|
|
|
569 |
}
|
|
|
570 |
|
|
|
571 |
if (val == null) {
|
|
|
572 |
if (f.required)
|
|
|
573 |
nullify = true;
|
|
|
574 |
|
|
|
575 |
if (f.defaultValue != null)
|
|
|
576 |
val = f.defaultValue;
|
|
|
577 |
}
|
|
|
578 |
}
|
|
|
579 |
|
|
|
580 |
points[k + m] = val;
|
|
|
581 |
}
|
|
|
582 |
}
|
|
|
583 |
|
|
|
584 |
if (nullify) {
|
|
|
585 |
for (m = 0; m < ps; ++m) {
|
|
|
586 |
val = points[k + m];
|
|
|
587 |
if (val != null) {
|
|
|
588 |
f = format[m];
|
|
|
589 |
// extract min/max info
|
|
|
590 |
if (f.x)
|
|
|
591 |
updateAxis(s.xaxis, val, val);
|
|
|
592 |
if (f.y)
|
|
|
593 |
updateAxis(s.yaxis, val, val);
|
|
|
594 |
}
|
|
|
595 |
points[k + m] = null;
|
|
|
596 |
}
|
|
|
597 |
}
|
|
|
598 |
else {
|
|
|
599 |
// a little bit of line specific stuff that
|
|
|
600 |
// perhaps shouldn't be here, but lacking
|
|
|
601 |
// better means...
|
|
|
602 |
if (insertSteps && k > 0
|
|
|
603 |
&& points[k - ps] != null
|
|
|
604 |
&& points[k - ps] != points[k]
|
|
|
605 |
&& points[k - ps + 1] != points[k + 1]) {
|
|
|
606 |
// copy the point to make room for a middle point
|
|
|
607 |
for (m = 0; m < ps; ++m)
|
|
|
608 |
points[k + ps + m] = points[k + m];
|
|
|
609 |
|
|
|
610 |
// middle point has same y
|
|
|
611 |
points[k + 1] = points[k - ps + 1];
|
|
|
612 |
|
|
|
613 |
// we've added a point, better reflect that
|
|
|
614 |
k += ps;
|
|
|
615 |
}
|
|
|
616 |
}
|
|
|
617 |
}
|
|
|
618 |
}
|
|
|
619 |
|
|
|
620 |
// give the hooks a chance to run
|
|
|
621 |
for (i = 0; i < series.length; ++i) {
|
|
|
622 |
s = series[i];
|
|
|
623 |
|
|
|
624 |
executeHooks(hooks.processDatapoints, [ s, s.datapoints]);
|
|
|
625 |
}
|
|
|
626 |
|
|
|
627 |
// second pass: find datamax/datamin for auto-scaling
|
|
|
628 |
for (i = 0; i < series.length; ++i) {
|
|
|
629 |
s = series[i];
|
|
|
630 |
points = s.datapoints.points,
|
|
|
631 |
ps = s.datapoints.pointsize;
|
|
|
632 |
|
|
|
633 |
var xmin = topSentry, ymin = topSentry,
|
|
|
634 |
xmax = bottomSentry, ymax = bottomSentry;
|
|
|
635 |
|
|
|
636 |
for (j = 0; j < points.length; j += ps) {
|
|
|
637 |
if (points[j] == null)
|
|
|
638 |
continue;
|
|
|
639 |
|
|
|
640 |
for (m = 0; m < ps; ++m) {
|
|
|
641 |
val = points[j + m];
|
|
|
642 |
f = format[m];
|
|
|
643 |
if (!f || val == fakeInfinity || val == -fakeInfinity)
|
|
|
644 |
continue;
|
|
|
645 |
|
|
|
646 |
if (f.x) {
|
|
|
647 |
if (val < xmin)
|
|
|
648 |
xmin = val;
|
|
|
649 |
if (val > xmax)
|
|
|
650 |
xmax = val;
|
|
|
651 |
}
|
|
|
652 |
if (f.y) {
|
|
|
653 |
if (val < ymin)
|
|
|
654 |
ymin = val;
|
|
|
655 |
if (val > ymax)
|
|
|
656 |
ymax = val;
|
|
|
657 |
}
|
|
|
658 |
}
|
|
|
659 |
}
|
|
|
660 |
|
|
|
661 |
if (s.bars.show) {
|
|
|
662 |
// make sure we got room for the bar on the dancing floor
|
|
|
663 |
var delta = s.bars.align == "left" ? 0 : -s.bars.barWidth/2;
|
|
|
664 |
if (s.bars.horizontal) {
|
|
|
665 |
ymin += delta;
|
|
|
666 |
ymax += delta + s.bars.barWidth;
|
|
|
667 |
}
|
|
|
668 |
else {
|
|
|
669 |
xmin += delta;
|
|
|
670 |
xmax += delta + s.bars.barWidth;
|
|
|
671 |
}
|
|
|
672 |
}
|
|
|
673 |
|
|
|
674 |
updateAxis(s.xaxis, xmin, xmax);
|
|
|
675 |
updateAxis(s.yaxis, ymin, ymax);
|
|
|
676 |
}
|
|
|
677 |
|
|
|
678 |
$.each(allAxes(), function (_, axis) {
|
|
|
679 |
if (axis.datamin == topSentry)
|
|
|
680 |
axis.datamin = null;
|
|
|
681 |
if (axis.datamax == bottomSentry)
|
|
|
682 |
axis.datamax = null;
|
|
|
683 |
});
|
|
|
684 |
}
|
|
|
685 |
|
|
|
686 |
function makeCanvas(skipPositioning, cls) {
|
|
|
687 |
var c = document.createElement('canvas');
|
|
|
688 |
c.className = cls;
|
|
|
689 |
c.width = canvasWidth;
|
|
|
690 |
c.height = canvasHeight;
|
|
|
691 |
|
|
|
692 |
if (!skipPositioning)
|
|
|
693 |
$(c).css({ position: 'absolute', left: 0, top: 0 });
|
|
|
694 |
|
|
|
695 |
$(c).appendTo(placeholder);
|
|
|
696 |
|
|
|
697 |
if (!c.getContext) // excanvas hack
|
|
|
698 |
c = window.G_vmlCanvasManager.initElement(c);
|
|
|
699 |
|
|
|
700 |
// used for resetting in case we get replotted
|
|
|
701 |
c.getContext("2d").save();
|
|
|
702 |
|
|
|
703 |
return c;
|
|
|
704 |
}
|
|
|
705 |
|
|
|
706 |
function getCanvasDimensions() {
|
|
|
707 |
canvasWidth = placeholder.width();
|
|
|
708 |
canvasHeight = placeholder.height();
|
|
|
709 |
|
|
|
710 |
if (canvasWidth <= 0 || canvasHeight <= 0)
|
|
|
711 |
throw "Invalid dimensions for plot, width = " + canvasWidth + ", height = " + canvasHeight;
|
|
|
712 |
}
|
|
|
713 |
|
|
|
714 |
function resizeCanvas(c) {
|
|
|
715 |
// resizing should reset the state (excanvas seems to be
|
|
|
716 |
// buggy though)
|
|
|
717 |
if (c.width != canvasWidth)
|
|
|
718 |
c.width = canvasWidth;
|
|
|
719 |
|
|
|
720 |
if (c.height != canvasHeight)
|
|
|
721 |
c.height = canvasHeight;
|
|
|
722 |
|
|
|
723 |
// so try to get back to the initial state (even if it's
|
|
|
724 |
// gone now, this should be safe according to the spec)
|
|
|
725 |
var cctx = c.getContext("2d");
|
|
|
726 |
cctx.restore();
|
|
|
727 |
|
|
|
728 |
// and save again
|
|
|
729 |
cctx.save();
|
|
|
730 |
}
|
|
|
731 |
|
|
|
732 |
function setupCanvases() {
|
|
|
733 |
var reused,
|
|
|
734 |
existingCanvas = placeholder.children("canvas.base"),
|
|
|
735 |
existingOverlay = placeholder.children("canvas.overlay");
|
|
|
736 |
|
|
|
737 |
if (existingCanvas.length == 0 || existingOverlay == 0) {
|
|
|
738 |
// init everything
|
|
|
739 |
|
|
|
740 |
placeholder.html(""); // make sure placeholder is clear
|
|
|
741 |
|
|
|
742 |
placeholder.css({ padding: 0 }); // padding messes up the positioning
|
|
|
743 |
|
|
|
744 |
if (placeholder.css("position") == 'static')
|
|
|
745 |
placeholder.css("position", "relative"); // for positioning labels and overlay
|
|
|
746 |
|
|
|
747 |
getCanvasDimensions();
|
|
|
748 |
|
|
|
749 |
canvas = makeCanvas(true, "base");
|
|
|
750 |
overlay = makeCanvas(false, "overlay"); // overlay canvas for interactive features
|
|
|
751 |
|
|
|
752 |
reused = false;
|
|
|
753 |
}
|
|
|
754 |
else {
|
|
|
755 |
// reuse existing elements
|
|
|
756 |
|
|
|
757 |
canvas = existingCanvas.get(0);
|
|
|
758 |
overlay = existingOverlay.get(0);
|
|
|
759 |
|
|
|
760 |
reused = true;
|
|
|
761 |
}
|
|
|
762 |
|
|
|
763 |
ctx = canvas.getContext("2d");
|
|
|
764 |
octx = overlay.getContext("2d");
|
|
|
765 |
|
|
|
766 |
// we include the canvas in the event holder too, because IE 7
|
|
|
767 |
// sometimes has trouble with the stacking order
|
|
|
768 |
eventHolder = $([overlay, canvas]);
|
|
|
769 |
|
|
|
770 |
if (reused) {
|
|
|
771 |
// run shutdown in the old plot object
|
|
|
772 |
placeholder.data("plot").shutdown();
|
|
|
773 |
|
|
|
774 |
// reset reused canvases
|
|
|
775 |
plot.resize();
|
|
|
776 |
|
|
|
777 |
// make sure overlay pixels are cleared (canvas is cleared when we redraw)
|
|
|
778 |
octx.clearRect(0, 0, canvasWidth, canvasHeight);
|
|
|
779 |
|
|
|
780 |
// then whack any remaining obvious garbage left
|
|
|
781 |
eventHolder.unbind();
|
|
|
782 |
placeholder.children().not([canvas, overlay]).remove();
|
|
|
783 |
}
|
|
|
784 |
|
|
|
785 |
// save in case we get replotted
|
|
|
786 |
placeholder.data("plot", plot);
|
|
|
787 |
}
|
|
|
788 |
|
|
|
789 |
function bindEvents() {
|
|
|
790 |
// bind events
|
|
|
791 |
if (options.grid.hoverable) {
|
|
|
792 |
eventHolder.mousemove(onMouseMove);
|
|
|
793 |
eventHolder.mouseleave(onMouseLeave);
|
|
|
794 |
}
|
|
|
795 |
|
|
|
796 |
if (options.grid.clickable)
|
|
|
797 |
eventHolder.click(onClick);
|
|
|
798 |
|
|
|
799 |
executeHooks(hooks.bindEvents, [eventHolder]);
|
|
|
800 |
}
|
|
|
801 |
|
|
|
802 |
function shutdown() {
|
|
|
803 |
if (redrawTimeout)
|
|
|
804 |
clearTimeout(redrawTimeout);
|
|
|
805 |
|
|
|
806 |
eventHolder.unbind("mousemove", onMouseMove);
|
|
|
807 |
eventHolder.unbind("mouseleave", onMouseLeave);
|
|
|
808 |
eventHolder.unbind("click", onClick);
|
|
|
809 |
|
|
|
810 |
executeHooks(hooks.shutdown, [eventHolder]);
|
|
|
811 |
}
|
|
|
812 |
|
|
|
813 |
function setTransformationHelpers(axis) {
|
|
|
814 |
// set helper functions on the axis, assumes plot area
|
|
|
815 |
// has been computed already
|
|
|
816 |
|
|
|
817 |
function identity(x) { return x; }
|
|
|
818 |
|
|
|
819 |
var s, m, t = axis.options.transform || identity,
|
|
|
820 |
it = axis.options.inverseTransform;
|
|
|
821 |
|
|
|
822 |
// precompute how much the axis is scaling a point
|
|
|
823 |
// in canvas space
|
|
|
824 |
if (axis.direction == "x") {
|
|
|
825 |
s = axis.scale = plotWidth / Math.abs(t(axis.max) - t(axis.min));
|
|
|
826 |
m = Math.min(t(axis.max), t(axis.min));
|
|
|
827 |
}
|
|
|
828 |
else {
|
|
|
829 |
s = axis.scale = plotHeight / Math.abs(t(axis.max) - t(axis.min));
|
|
|
830 |
s = -s;
|
|
|
831 |
m = Math.max(t(axis.max), t(axis.min));
|
|
|
832 |
}
|
|
|
833 |
|
|
|
834 |
// data point to canvas coordinate
|
|
|
835 |
if (t == identity) // slight optimization
|
|
|
836 |
axis.p2c = function (p) { return (p - m) * s; };
|
|
|
837 |
else
|
|
|
838 |
axis.p2c = function (p) { return (t(p) - m) * s; };
|
|
|
839 |
// canvas coordinate to data point
|
|
|
840 |
if (!it)
|
|
|
841 |
axis.c2p = function (c) { return m + c / s; };
|
|
|
842 |
else
|
|
|
843 |
axis.c2p = function (c) { return it(m + c / s); };
|
|
|
844 |
}
|
|
|
845 |
|
|
|
846 |
function measureTickLabels(axis) {
|
|
|
847 |
var opts = axis.options, i, ticks = axis.ticks || [], labels = [],
|
|
|
848 |
l, w = opts.labelWidth, h = opts.labelHeight, dummyDiv;
|
|
|
849 |
|
|
|
850 |
function makeDummyDiv(labels, width) {
|
|
|
851 |
return $('<div style="position:absolute;top:-10000px;' + width + 'font-size:smaller">' +
|
|
|
852 |
'<div class="' + axis.direction + 'Axis ' + axis.direction + axis.n + 'Axis">'
|
|
|
853 |
+ labels.join("") + '</div></div>')
|
|
|
854 |
.appendTo(placeholder);
|
|
|
855 |
}
|
|
|
856 |
|
|
|
857 |
if (axis.direction == "x") {
|
|
|
858 |
// to avoid measuring the widths of the labels (it's slow), we
|
|
|
859 |
// construct fixed-size boxes and put the labels inside
|
|
|
860 |
// them, we don't need the exact figures and the
|
|
|
861 |
// fixed-size box content is easy to center
|
|
|
862 |
if (w == null)
|
|
|
863 |
w = Math.floor(canvasWidth / (ticks.length > 0 ? ticks.length : 1));
|
|
|
864 |
|
|
|
865 |
// measure x label heights
|
|
|
866 |
if (h == null) {
|
|
|
867 |
labels = [];
|
|
|
868 |
for (i = 0; i < ticks.length; ++i) {
|
|
|
869 |
l = ticks[i].label;
|
|
|
870 |
if (l)
|
|
|
871 |
labels.push('<div class="tickLabel" style="float:left;width:' + w + 'px">' + l + '</div>');
|
|
|
872 |
}
|
|
|
873 |
|
|
|
874 |
if (labels.length > 0) {
|
|
|
875 |
// stick them all in the same div and measure
|
|
|
876 |
// collective height
|
|
|
877 |
labels.push('<div style="clear:left"></div>');
|
|
|
878 |
dummyDiv = makeDummyDiv(labels, "width:10000px;");
|
|
|
879 |
h = dummyDiv.height();
|
|
|
880 |
dummyDiv.remove();
|
|
|
881 |
}
|
|
|
882 |
}
|
|
|
883 |
}
|
|
|
884 |
else if (w == null || h == null) {
|
|
|
885 |
// calculate y label dimensions
|
|
|
886 |
for (i = 0; i < ticks.length; ++i) {
|
|
|
887 |
l = ticks[i].label;
|
|
|
888 |
if (l)
|
|
|
889 |
labels.push('<div class="tickLabel">' + l + '</div>');
|
|
|
890 |
}
|
|
|
891 |
|
|
|
892 |
if (labels.length > 0) {
|
|
|
893 |
dummyDiv = makeDummyDiv(labels, "");
|
|
|
894 |
if (w == null)
|
|
|
895 |
w = dummyDiv.children().width();
|
|
|
896 |
if (h == null)
|
|
|
897 |
h = dummyDiv.find("div.tickLabel").height();
|
|
|
898 |
dummyDiv.remove();
|
|
|
899 |
}
|
|
|
900 |
}
|
|
|
901 |
|
|
|
902 |
if (w == null)
|
|
|
903 |
w = 0;
|
|
|
904 |
if (h == null)
|
|
|
905 |
h = 0;
|
|
|
906 |
|
|
|
907 |
axis.labelWidth = w;
|
|
|
908 |
axis.labelHeight = h;
|
|
|
909 |
}
|
|
|
910 |
|
|
|
911 |
function allocateAxisBoxFirstPhase(axis) {
|
|
|
912 |
// find the bounding box of the axis by looking at label
|
|
|
913 |
// widths/heights and ticks, make room by diminishing the
|
|
|
914 |
// plotOffset
|
|
|
915 |
|
|
|
916 |
var lw = axis.labelWidth,
|
|
|
917 |
lh = axis.labelHeight,
|
|
|
918 |
pos = axis.options.position,
|
|
|
919 |
tickLength = axis.options.tickLength,
|
|
|
920 |
axismargin = options.grid.axisMargin,
|
|
|
921 |
padding = options.grid.labelMargin,
|
|
|
922 |
all = axis.direction == "x" ? xaxes : yaxes,
|
|
|
923 |
index;
|
|
|
924 |
|
|
|
925 |
// determine axis margin
|
|
|
926 |
var samePosition = $.grep(all, function (a) {
|
|
|
927 |
return a && a.options.position == pos && a.reserveSpace;
|
|
|
928 |
});
|
|
|
929 |
if ($.inArray(axis, samePosition) == samePosition.length - 1)
|
|
|
930 |
axismargin = 0; // outermost
|
|
|
931 |
|
|
|
932 |
// determine tick length - if we're innermost, we can use "full"
|
|
|
933 |
if (tickLength == null)
|
|
|
934 |
tickLength = "full";
|
|
|
935 |
|
|
|
936 |
var sameDirection = $.grep(all, function (a) {
|
|
|
937 |
return a && a.reserveSpace;
|
|
|
938 |
});
|
|
|
939 |
|
|
|
940 |
var innermost = $.inArray(axis, sameDirection) == 0;
|
|
|
941 |
if (!innermost && tickLength == "full")
|
|
|
942 |
tickLength = 5;
|
|
|
943 |
|
|
|
944 |
if (!isNaN(+tickLength))
|
|
|
945 |
padding += +tickLength;
|
|
|
946 |
|
|
|
947 |
// compute box
|
|
|
948 |
if (axis.direction == "x") {
|
|
|
949 |
lh += padding;
|
|
|
950 |
|
|
|
951 |
if (pos == "bottom") {
|
|
|
952 |
plotOffset.bottom += lh + axismargin;
|
|
|
953 |
axis.box = { top: canvasHeight - plotOffset.bottom, height: lh };
|
|
|
954 |
}
|
|
|
955 |
else {
|
|
|
956 |
axis.box = { top: plotOffset.top + axismargin, height: lh };
|
|
|
957 |
plotOffset.top += lh + axismargin;
|
|
|
958 |
}
|
|
|
959 |
}
|
|
|
960 |
else {
|
|
|
961 |
lw += padding;
|
|
|
962 |
|
|
|
963 |
if (pos == "left") {
|
|
|
964 |
axis.box = { left: plotOffset.left + axismargin, width: lw };
|
|
|
965 |
plotOffset.left += lw + axismargin;
|
|
|
966 |
}
|
|
|
967 |
else {
|
|
|
968 |
plotOffset.right += lw + axismargin;
|
|
|
969 |
axis.box = { left: canvasWidth - plotOffset.right, width: lw };
|
|
|
970 |
}
|
|
|
971 |
}
|
|
|
972 |
|
|
|
973 |
// save for future reference
|
|
|
974 |
axis.position = pos;
|
|
|
975 |
axis.tickLength = tickLength;
|
|
|
976 |
axis.box.padding = padding;
|
|
|
977 |
axis.innermost = innermost;
|
|
|
978 |
}
|
|
|
979 |
|
|
|
980 |
function allocateAxisBoxSecondPhase(axis) {
|
|
|
981 |
// set remaining bounding box coordinates
|
|
|
982 |
if (axis.direction == "x") {
|
|
|
983 |
axis.box.left = plotOffset.left;
|
|
|
984 |
axis.box.width = plotWidth;
|
|
|
985 |
}
|
|
|
986 |
else {
|
|
|
987 |
axis.box.top = plotOffset.top;
|
|
|
988 |
axis.box.height = plotHeight;
|
|
|
989 |
}
|
|
|
990 |
}
|
|
|
991 |
|
|
|
992 |
function setupGrid() {
|
|
|
993 |
var i, axes = allAxes();
|
|
|
994 |
|
|
|
995 |
// first calculate the plot and axis box dimensions
|
|
|
996 |
|
|
|
997 |
$.each(axes, function (_, axis) {
|
|
|
998 |
axis.show = axis.options.show;
|
|
|
999 |
if (axis.show == null)
|
|
|
1000 |
axis.show = axis.used; // by default an axis is visible if it's got data
|
|
|
1001 |
|
|
|
1002 |
axis.reserveSpace = axis.show || axis.options.reserveSpace;
|
|
|
1003 |
|
|
|
1004 |
setRange(axis);
|
|
|
1005 |
});
|
|
|
1006 |
|
|
|
1007 |
allocatedAxes = $.grep(axes, function (axis) { return axis.reserveSpace; });
|
|
|
1008 |
|
|
|
1009 |
plotOffset.left = plotOffset.right = plotOffset.top = plotOffset.bottom = 0;
|
|
|
1010 |
if (options.grid.show) {
|
|
|
1011 |
$.each(allocatedAxes, function (_, axis) {
|
|
|
1012 |
// make the ticks
|
|
|
1013 |
setupTickGeneration(axis);
|
|
|
1014 |
setTicks(axis);
|
|
|
1015 |
snapRangeToTicks(axis, axis.ticks);
|
|
|
1016 |
|
|
|
1017 |
// find labelWidth/Height for axis
|
|
|
1018 |
measureTickLabels(axis);
|
|
|
1019 |
});
|
|
|
1020 |
|
|
|
1021 |
// with all dimensions in house, we can compute the
|
|
|
1022 |
// axis boxes, start from the outside (reverse order)
|
|
|
1023 |
for (i = allocatedAxes.length - 1; i >= 0; --i)
|
|
|
1024 |
allocateAxisBoxFirstPhase(allocatedAxes[i]);
|
|
|
1025 |
|
|
|
1026 |
// make sure we've got enough space for things that
|
|
|
1027 |
// might stick out
|
|
|
1028 |
var minMargin = options.grid.minBorderMargin;
|
|
|
1029 |
if (minMargin == null) {
|
|
|
1030 |
minMargin = 0;
|
|
|
1031 |
for (i = 0; i < series.length; ++i)
|
|
|
1032 |
minMargin = Math.max(minMargin, series[i].points.radius + series[i].points.lineWidth/2);
|
|
|
1033 |
}
|
|
|
1034 |
|
|
|
1035 |
for (var a in plotOffset) {
|
|
|
1036 |
plotOffset[a] += options.grid.borderWidth;
|
|
|
1037 |
plotOffset[a] = Math.max(minMargin, plotOffset[a]);
|
|
|
1038 |
}
|
|
|
1039 |
}
|
|
|
1040 |
|
|
|
1041 |
plotWidth = canvasWidth - plotOffset.left - plotOffset.right;
|
|
|
1042 |
plotHeight = canvasHeight - plotOffset.bottom - plotOffset.top;
|
|
|
1043 |
|
|
|
1044 |
// now we got the proper plotWidth/Height, we can compute the scaling
|
|
|
1045 |
$.each(axes, function (_, axis) {
|
|
|
1046 |
setTransformationHelpers(axis);
|
|
|
1047 |
});
|
|
|
1048 |
|
|
|
1049 |
if (options.grid.show) {
|
|
|
1050 |
$.each(allocatedAxes, function (_, axis) {
|
|
|
1051 |
allocateAxisBoxSecondPhase(axis);
|
|
|
1052 |
});
|
|
|
1053 |
|
|
|
1054 |
insertAxisLabels();
|
|
|
1055 |
}
|
|
|
1056 |
|
|
|
1057 |
insertLegend();
|
|
|
1058 |
}
|
|
|
1059 |
|
|
|
1060 |
function setRange(axis) {
|
|
|
1061 |
var opts = axis.options,
|
|
|
1062 |
min = +(opts.min != null ? opts.min : axis.datamin),
|
|
|
1063 |
max = +(opts.max != null ? opts.max : axis.datamax),
|
|
|
1064 |
delta = max - min;
|
|
|
1065 |
|
|
|
1066 |
if (delta == 0.0) {
|
|
|
1067 |
// degenerate case
|
|
|
1068 |
var widen = max == 0 ? 1 : 0.01;
|
|
|
1069 |
|
|
|
1070 |
if (opts.min == null)
|
|
|
1071 |
min -= widen;
|
|
|
1072 |
// always widen max if we couldn't widen min to ensure we
|
|
|
1073 |
// don't fall into min == max which doesn't work
|
|
|
1074 |
if (opts.max == null || opts.min != null)
|
|
|
1075 |
max += widen;
|
|
|
1076 |
}
|
|
|
1077 |
else {
|
|
|
1078 |
// consider autoscaling
|
|
|
1079 |
var margin = opts.autoscaleMargin;
|
|
|
1080 |
if (margin != null) {
|
|
|
1081 |
if (opts.min == null) {
|
|
|
1082 |
min -= delta * margin;
|
|
|
1083 |
// make sure we don't go below zero if all values
|
|
|
1084 |
// are positive
|
|
|
1085 |
if (min < 0 && axis.datamin != null && axis.datamin >= 0)
|
|
|
1086 |
min = 0;
|
|
|
1087 |
}
|
|
|
1088 |
if (opts.max == null) {
|
|
|
1089 |
max += delta * margin;
|
|
|
1090 |
if (max > 0 && axis.datamax != null && axis.datamax <= 0)
|
|
|
1091 |
max = 0;
|
|
|
1092 |
}
|
|
|
1093 |
}
|
|
|
1094 |
}
|
|
|
1095 |
axis.min = min;
|
|
|
1096 |
axis.max = max;
|
|
|
1097 |
}
|
|
|
1098 |
|
|
|
1099 |
function setupTickGeneration(axis) {
|
|
|
1100 |
var opts = axis.options;
|
|
|
1101 |
|
|
|
1102 |
// estimate number of ticks
|
|
|
1103 |
var noTicks;
|
|
|
1104 |
if (typeof opts.ticks == "number" && opts.ticks > 0)
|
|
|
1105 |
noTicks = opts.ticks;
|
|
|
1106 |
else
|
|
|
1107 |
// heuristic based on the model a*sqrt(x) fitted to
|
|
|
1108 |
// some data points that seemed reasonable
|
|
|
1109 |
noTicks = 0.3 * Math.sqrt(axis.direction == "x" ? canvasWidth : canvasHeight);
|
|
|
1110 |
|
|
|
1111 |
var delta = (axis.max - axis.min) / noTicks,
|
|
|
1112 |
size, generator, unit, formatter, i, magn, norm;
|
|
|
1113 |
|
|
|
1114 |
if (opts.mode == "time") {
|
|
|
1115 |
// pretty handling of time
|
|
|
1116 |
|
|
|
1117 |
// map of app. size of time units in milliseconds
|
|
|
1118 |
var timeUnitSize = {
|
|
|
1119 |
"second": 1000,
|
|
|
1120 |
"minute": 60 * 1000,
|
|
|
1121 |
"hour": 60 * 60 * 1000,
|
|
|
1122 |
"day": 24 * 60 * 60 * 1000,
|
|
|
1123 |
"month": 30 * 24 * 60 * 60 * 1000,
|
|
|
1124 |
"year": 365.2425 * 24 * 60 * 60 * 1000
|
|
|
1125 |
};
|
|
|
1126 |
|
|
|
1127 |
|
|
|
1128 |
// the allowed tick sizes, after 1 year we use
|
|
|
1129 |
// an integer algorithm
|
|
|
1130 |
var spec = [
|
|
|
1131 |
[1, "second"], [2, "second"], [5, "second"], [10, "second"],
|
|
|
1132 |
[30, "second"],
|
|
|
1133 |
[1, "minute"], [2, "minute"], [5, "minute"], [10, "minute"],
|
|
|
1134 |
[30, "minute"],
|
|
|
1135 |
[1, "hour"], [2, "hour"], [4, "hour"],
|
|
|
1136 |
[8, "hour"], [12, "hour"],
|
|
|
1137 |
[1, "day"], [2, "day"], [3, "day"],
|
|
|
1138 |
[0.25, "month"], [0.5, "month"], [1, "month"],
|
|
|
1139 |
[2, "month"], [3, "month"], [6, "month"],
|
|
|
1140 |
[1, "year"]
|
|
|
1141 |
];
|
|
|
1142 |
|
|
|
1143 |
var minSize = 0;
|
|
|
1144 |
if (opts.minTickSize != null) {
|
|
|
1145 |
if (typeof opts.tickSize == "number")
|
|
|
1146 |
minSize = opts.tickSize;
|
|
|
1147 |
else
|
|
|
1148 |
minSize = opts.minTickSize[0] * timeUnitSize[opts.minTickSize[1]];
|
|
|
1149 |
}
|
|
|
1150 |
|
|
|
1151 |
for (var i = 0; i < spec.length - 1; ++i)
|
|
|
1152 |
if (delta < (spec[i][0] * timeUnitSize[spec[i][1]]
|
|
|
1153 |
+ spec[i + 1][0] * timeUnitSize[spec[i + 1][1]]) / 2
|
|
|
1154 |
&& spec[i][0] * timeUnitSize[spec[i][1]] >= minSize)
|
|
|
1155 |
break;
|
|
|
1156 |
size = spec[i][0];
|
|
|
1157 |
unit = spec[i][1];
|
|
|
1158 |
|
|
|
1159 |
// special-case the possibility of several years
|
|
|
1160 |
if (unit == "year") {
|
|
|
1161 |
magn = Math.pow(10, Math.floor(Math.log(delta / timeUnitSize.year) / Math.LN10));
|
|
|
1162 |
norm = (delta / timeUnitSize.year) / magn;
|
|
|
1163 |
if (norm < 1.5)
|
|
|
1164 |
size = 1;
|
|
|
1165 |
else if (norm < 3)
|
|
|
1166 |
size = 2;
|
|
|
1167 |
else if (norm < 7.5)
|
|
|
1168 |
size = 5;
|
|
|
1169 |
else
|
|
|
1170 |
size = 10;
|
|
|
1171 |
|
|
|
1172 |
size *= magn;
|
|
|
1173 |
}
|
|
|
1174 |
|
|
|
1175 |
axis.tickSize = opts.tickSize || [size, unit];
|
|
|
1176 |
|
|
|
1177 |
generator = function(axis) {
|
|
|
1178 |
var ticks = [],
|
|
|
1179 |
tickSize = axis.tickSize[0], unit = axis.tickSize[1],
|
|
|
1180 |
d = new Date(axis.min);
|
|
|
1181 |
|
|
|
1182 |
var step = tickSize * timeUnitSize[unit];
|
|
|
1183 |
|
|
|
1184 |
if (unit == "second")
|
|
|
1185 |
d.setUTCSeconds(floorInBase(d.getUTCSeconds(), tickSize));
|
|
|
1186 |
if (unit == "minute")
|
|
|
1187 |
d.setUTCMinutes(floorInBase(d.getUTCMinutes(), tickSize));
|
|
|
1188 |
if (unit == "hour")
|
|
|
1189 |
d.setUTCHours(floorInBase(d.getUTCHours(), tickSize));
|
|
|
1190 |
if (unit == "month")
|
|
|
1191 |
d.setUTCMonth(floorInBase(d.getUTCMonth(), tickSize));
|
|
|
1192 |
if (unit == "year")
|
|
|
1193 |
d.setUTCFullYear(floorInBase(d.getUTCFullYear(), tickSize));
|
|
|
1194 |
|
|
|
1195 |
// reset smaller components
|
|
|
1196 |
d.setUTCMilliseconds(0);
|
|
|
1197 |
if (step >= timeUnitSize.minute)
|
|
|
1198 |
d.setUTCSeconds(0);
|
|
|
1199 |
if (step >= timeUnitSize.hour)
|
|
|
1200 |
d.setUTCMinutes(0);
|
|
|
1201 |
if (step >= timeUnitSize.day)
|
|
|
1202 |
d.setUTCHours(0);
|
|
|
1203 |
if (step >= timeUnitSize.day * 4)
|
|
|
1204 |
d.setUTCDate(1);
|
|
|
1205 |
if (step >= timeUnitSize.year)
|
|
|
1206 |
d.setUTCMonth(0);
|
|
|
1207 |
|
|
|
1208 |
|
|
|
1209 |
var carry = 0, v = Number.NaN, prev;
|
|
|
1210 |
do {
|
|
|
1211 |
prev = v;
|
|
|
1212 |
v = d.getTime();
|
|
|
1213 |
ticks.push(v);
|
|
|
1214 |
if (unit == "month") {
|
|
|
1215 |
if (tickSize < 1) {
|
|
|
1216 |
// a bit complicated - we'll divide the month
|
|
|
1217 |
// up but we need to take care of fractions
|
|
|
1218 |
// so we don't end up in the middle of a day
|
|
|
1219 |
d.setUTCDate(1);
|
|
|
1220 |
var start = d.getTime();
|
|
|
1221 |
d.setUTCMonth(d.getUTCMonth() + 1);
|
|
|
1222 |
var end = d.getTime();
|
|
|
1223 |
d.setTime(v + carry * timeUnitSize.hour + (end - start) * tickSize);
|
|
|
1224 |
carry = d.getUTCHours();
|
|
|
1225 |
d.setUTCHours(0);
|
|
|
1226 |
}
|
|
|
1227 |
else
|
|
|
1228 |
d.setUTCMonth(d.getUTCMonth() + tickSize);
|
|
|
1229 |
}
|
|
|
1230 |
else if (unit == "year") {
|
|
|
1231 |
d.setUTCFullYear(d.getUTCFullYear() + tickSize);
|
|
|
1232 |
}
|
|
|
1233 |
else
|
|
|
1234 |
d.setTime(v + step);
|
|
|
1235 |
} while (v < axis.max && v != prev);
|
|
|
1236 |
|
|
|
1237 |
return ticks;
|
|
|
1238 |
};
|
|
|
1239 |
|
|
|
1240 |
formatter = function (v, axis) {
|
|
|
1241 |
var d = new Date(v);
|
|
|
1242 |
|
|
|
1243 |
// first check global format
|
|
|
1244 |
if (opts.timeformat != null)
|
|
|
1245 |
return $.plot.formatDate(d, opts.timeformat, opts.monthNames);
|
|
|
1246 |
|
|
|
1247 |
var t = axis.tickSize[0] * timeUnitSize[axis.tickSize[1]];
|
|
|
1248 |
var span = axis.max - axis.min;
|
|
|
1249 |
var suffix = (opts.twelveHourClock) ? " %p" : "";
|
|
|
1250 |
|
|
|
1251 |
if (t < timeUnitSize.minute)
|
|
|
1252 |
fmt = "%h:%M:%S" + suffix;
|
|
|
1253 |
else if (t < timeUnitSize.day) {
|
|
|
1254 |
if (span < 2 * timeUnitSize.day)
|
|
|
1255 |
fmt = "%h:%M" + suffix;
|
|
|
1256 |
else
|
|
|
1257 |
fmt = "%b %d %h:%M" + suffix;
|
|
|
1258 |
}
|
|
|
1259 |
else if (t < timeUnitSize.month)
|
|
|
1260 |
fmt = "%b %d";
|
|
|
1261 |
else if (t < timeUnitSize.year) {
|
|
|
1262 |
if (span < timeUnitSize.year)
|
|
|
1263 |
fmt = "%b";
|
|
|
1264 |
else
|
|
|
1265 |
fmt = "%b %y";
|
|
|
1266 |
}
|
|
|
1267 |
else
|
|
|
1268 |
fmt = "%y";
|
|
|
1269 |
|
|
|
1270 |
return $.plot.formatDate(d, fmt, opts.monthNames);
|
|
|
1271 |
};
|
|
|
1272 |
}
|
|
|
1273 |
else {
|
|
|
1274 |
// pretty rounding of base-10 numbers
|
|
|
1275 |
var maxDec = opts.tickDecimals;
|
|
|
1276 |
var dec = -Math.floor(Math.log(delta) / Math.LN10);
|
|
|
1277 |
if (maxDec != null && dec > maxDec)
|
|
|
1278 |
dec = maxDec;
|
|
|
1279 |
|
|
|
1280 |
magn = Math.pow(10, -dec);
|
|
|
1281 |
norm = delta / magn; // norm is between 1.0 and 10.0
|
|
|
1282 |
|
|
|
1283 |
if (norm < 1.5)
|
|
|
1284 |
size = 1;
|
|
|
1285 |
else if (norm < 3) {
|
|
|
1286 |
size = 2;
|
|
|
1287 |
// special case for 2.5, requires an extra decimal
|
|
|
1288 |
if (norm > 2.25 && (maxDec == null || dec + 1 <= maxDec)) {
|
|
|
1289 |
size = 2.5;
|
|
|
1290 |
++dec;
|
|
|
1291 |
}
|
|
|
1292 |
}
|
|
|
1293 |
else if (norm < 7.5)
|
|
|
1294 |
size = 5;
|
|
|
1295 |
else
|
|
|
1296 |
size = 10;
|
|
|
1297 |
|
|
|
1298 |
size *= magn;
|
|
|
1299 |
|
|
|
1300 |
if (opts.minTickSize != null && size < opts.minTickSize)
|
|
|
1301 |
size = opts.minTickSize;
|
|
|
1302 |
|
|
|
1303 |
axis.tickDecimals = Math.max(0, maxDec != null ? maxDec : dec);
|
|
|
1304 |
axis.tickSize = opts.tickSize || size;
|
|
|
1305 |
|
|
|
1306 |
generator = function (axis) {
|
|
|
1307 |
var ticks = [];
|
|
|
1308 |
|
|
|
1309 |
// spew out all possible ticks
|
|
|
1310 |
var start = floorInBase(axis.min, axis.tickSize),
|
|
|
1311 |
i = 0, v = Number.NaN, prev;
|
|
|
1312 |
do {
|
|
|
1313 |
prev = v;
|
|
|
1314 |
v = start + i * axis.tickSize;
|
|
|
1315 |
ticks.push(v);
|
|
|
1316 |
++i;
|
|
|
1317 |
} while (v < axis.max && v != prev);
|
|
|
1318 |
return ticks;
|
|
|
1319 |
};
|
|
|
1320 |
|
|
|
1321 |
formatter = function (v, axis) {
|
|
|
1322 |
return v.toFixed(axis.tickDecimals);
|
|
|
1323 |
};
|
|
|
1324 |
}
|
|
|
1325 |
|
|
|
1326 |
if (opts.alignTicksWithAxis != null) {
|
|
|
1327 |
var otherAxis = (axis.direction == "x" ? xaxes : yaxes)[opts.alignTicksWithAxis - 1];
|
|
|
1328 |
if (otherAxis && otherAxis.used && otherAxis != axis) {
|
|
|
1329 |
// consider snapping min/max to outermost nice ticks
|
|
|
1330 |
var niceTicks = generator(axis);
|
|
|
1331 |
if (niceTicks.length > 0) {
|
|
|
1332 |
if (opts.min == null)
|
|
|
1333 |
axis.min = Math.min(axis.min, niceTicks[0]);
|
|
|
1334 |
if (opts.max == null && niceTicks.length > 1)
|
|
|
1335 |
axis.max = Math.max(axis.max, niceTicks[niceTicks.length - 1]);
|
|
|
1336 |
}
|
|
|
1337 |
|
|
|
1338 |
generator = function (axis) {
|
|
|
1339 |
// copy ticks, scaled to this axis
|
|
|
1340 |
var ticks = [], v, i;
|
|
|
1341 |
for (i = 0; i < otherAxis.ticks.length; ++i) {
|
|
|
1342 |
v = (otherAxis.ticks[i].v - otherAxis.min) / (otherAxis.max - otherAxis.min);
|
|
|
1343 |
v = axis.min + v * (axis.max - axis.min);
|
|
|
1344 |
ticks.push(v);
|
|
|
1345 |
}
|
|
|
1346 |
return ticks;
|
|
|
1347 |
};
|
|
|
1348 |
|
|
|
1349 |
// we might need an extra decimal since forced
|
|
|
1350 |
// ticks don't necessarily fit naturally
|
|
|
1351 |
if (axis.mode != "time" && opts.tickDecimals == null) {
|
|
|
1352 |
var extraDec = Math.max(0, -Math.floor(Math.log(delta) / Math.LN10) + 1),
|
|
|
1353 |
ts = generator(axis);
|
|
|
1354 |
|
|
|
1355 |
// only proceed if the tick interval rounded
|
|
|
1356 |
// with an extra decimal doesn't give us a
|
|
|
1357 |
// zero at end
|
|
|
1358 |
if (!(ts.length > 1 && /\..*0$/.test((ts[1] - ts[0]).toFixed(extraDec))))
|
|
|
1359 |
axis.tickDecimals = extraDec;
|
|
|
1360 |
}
|
|
|
1361 |
}
|
|
|
1362 |
}
|
|
|
1363 |
|
|
|
1364 |
axis.tickGenerator = generator;
|
|
|
1365 |
if ($.isFunction(opts.tickFormatter))
|
|
|
1366 |
axis.tickFormatter = function (v, axis) { return "" + opts.tickFormatter(v, axis); };
|
|
|
1367 |
else
|
|
|
1368 |
axis.tickFormatter = formatter;
|
|
|
1369 |
}
|
|
|
1370 |
|
|
|
1371 |
function setTicks(axis) {
|
|
|
1372 |
var oticks = axis.options.ticks, ticks = [];
|
|
|
1373 |
if (oticks == null || (typeof oticks == "number" && oticks > 0))
|
|
|
1374 |
ticks = axis.tickGenerator(axis);
|
|
|
1375 |
else if (oticks) {
|
|
|
1376 |
if ($.isFunction(oticks))
|
|
|
1377 |
// generate the ticks
|
|
|
1378 |
ticks = oticks({ min: axis.min, max: axis.max });
|
|
|
1379 |
else
|
|
|
1380 |
ticks = oticks;
|
|
|
1381 |
}
|
|
|
1382 |
|
|
|
1383 |
// clean up/labelify the supplied ticks, copy them over
|
|
|
1384 |
var i, v;
|
|
|
1385 |
axis.ticks = [];
|
|
|
1386 |
for (i = 0; i < ticks.length; ++i) {
|
|
|
1387 |
var label = null;
|
|
|
1388 |
var t = ticks[i];
|
|
|
1389 |
if (typeof t == "object") {
|
|
|
1390 |
v = +t[0];
|
|
|
1391 |
if (t.length > 1)
|
|
|
1392 |
label = t[1];
|
|
|
1393 |
}
|
|
|
1394 |
else
|
|
|
1395 |
v = +t;
|
|
|
1396 |
if (label == null)
|
|
|
1397 |
label = axis.tickFormatter(v, axis);
|
|
|
1398 |
if (!isNaN(v))
|
|
|
1399 |
axis.ticks.push({ v: v, label: label });
|
|
|
1400 |
}
|
|
|
1401 |
}
|
|
|
1402 |
|
|
|
1403 |
function snapRangeToTicks(axis, ticks) {
|
|
|
1404 |
if (axis.options.autoscaleMargin && ticks.length > 0) {
|
|
|
1405 |
// snap to ticks
|
|
|
1406 |
if (axis.options.min == null)
|
|
|
1407 |
axis.min = Math.min(axis.min, ticks[0].v);
|
|
|
1408 |
if (axis.options.max == null && ticks.length > 1)
|
|
|
1409 |
axis.max = Math.max(axis.max, ticks[ticks.length - 1].v);
|
|
|
1410 |
}
|
|
|
1411 |
}
|
|
|
1412 |
|
|
|
1413 |
function draw() {
|
|
|
1414 |
ctx.clearRect(0, 0, canvasWidth, canvasHeight);
|
|
|
1415 |
|
|
|
1416 |
var grid = options.grid;
|
|
|
1417 |
|
|
|
1418 |
// draw background, if any
|
|
|
1419 |
if (grid.show && grid.backgroundColor)
|
|
|
1420 |
drawBackground();
|
|
|
1421 |
|
|
|
1422 |
if (grid.show && !grid.aboveData)
|
|
|
1423 |
drawGrid();
|
|
|
1424 |
|
|
|
1425 |
for (var i = 0; i < series.length; ++i) {
|
|
|
1426 |
executeHooks(hooks.drawSeries, [ctx, series[i]]);
|
|
|
1427 |
drawSeries(series[i]);
|
|
|
1428 |
}
|
|
|
1429 |
|
|
|
1430 |
executeHooks(hooks.draw, [ctx]);
|
|
|
1431 |
|
|
|
1432 |
if (grid.show && grid.aboveData)
|
|
|
1433 |
drawGrid();
|
|
|
1434 |
}
|
|
|
1435 |
|
|
|
1436 |
function extractRange(ranges, coord) {
|
|
|
1437 |
var axis, from, to, key, axes = allAxes();
|
|
|
1438 |
|
|
|
1439 |
for (i = 0; i < axes.length; ++i) {
|
|
|
1440 |
axis = axes[i];
|
|
|
1441 |
if (axis.direction == coord) {
|
|
|
1442 |
key = coord + axis.n + "axis";
|
|
|
1443 |
if (!ranges[key] && axis.n == 1)
|
|
|
1444 |
key = coord + "axis"; // support x1axis as xaxis
|
|
|
1445 |
if (ranges[key]) {
|
|
|
1446 |
from = ranges[key].from;
|
|
|
1447 |
to = ranges[key].to;
|
|
|
1448 |
break;
|
|
|
1449 |
}
|
|
|
1450 |
}
|
|
|
1451 |
}
|
|
|
1452 |
|
|
|
1453 |
// backwards-compat stuff - to be removed in future
|
|
|
1454 |
if (!ranges[key]) {
|
|
|
1455 |
axis = coord == "x" ? xaxes[0] : yaxes[0];
|
|
|
1456 |
from = ranges[coord + "1"];
|
|
|
1457 |
to = ranges[coord + "2"];
|
|
|
1458 |
}
|
|
|
1459 |
|
|
|
1460 |
// auto-reverse as an added bonus
|
|
|
1461 |
if (from != null && to != null && from > to) {
|
|
|
1462 |
var tmp = from;
|
|
|
1463 |
from = to;
|
|
|
1464 |
to = tmp;
|
|
|
1465 |
}
|
|
|
1466 |
|
|
|
1467 |
return { from: from, to: to, axis: axis };
|
|
|
1468 |
}
|
|
|
1469 |
|
|
|
1470 |
function drawBackground() {
|
|
|
1471 |
ctx.save();
|
|
|
1472 |
ctx.translate(plotOffset.left, plotOffset.top);
|
|
|
1473 |
|
|
|
1474 |
ctx.fillStyle = getColorOrGradient(options.grid.backgroundColor, plotHeight, 0, "rgba(255, 255, 255, 0)");
|
|
|
1475 |
ctx.fillRect(0, 0, plotWidth, plotHeight);
|
|
|
1476 |
ctx.restore();
|
|
|
1477 |
}
|
|
|
1478 |
|
|
|
1479 |
function drawGrid() {
|
|
|
1480 |
var i;
|
|
|
1481 |
|
|
|
1482 |
ctx.save();
|
|
|
1483 |
ctx.translate(plotOffset.left, plotOffset.top);
|
|
|
1484 |
|
|
|
1485 |
// draw markings
|
|
|
1486 |
var markings = options.grid.markings;
|
|
|
1487 |
if (markings) {
|
|
|
1488 |
if ($.isFunction(markings)) {
|
|
|
1489 |
var axes = plot.getAxes();
|
|
|
1490 |
// xmin etc. is backwards compatibility, to be
|
|
|
1491 |
// removed in the future
|
|
|
1492 |
axes.xmin = axes.xaxis.min;
|
|
|
1493 |
axes.xmax = axes.xaxis.max;
|
|
|
1494 |
axes.ymin = axes.yaxis.min;
|
|
|
1495 |
axes.ymax = axes.yaxis.max;
|
|
|
1496 |
|
|
|
1497 |
markings = markings(axes);
|
|
|
1498 |
}
|
|
|
1499 |
|
|
|
1500 |
for (i = 0; i < markings.length; ++i) {
|
|
|
1501 |
var m = markings[i],
|
|
|
1502 |
xrange = extractRange(m, "x"),
|
|
|
1503 |
yrange = extractRange(m, "y");
|
|
|
1504 |
|
|
|
1505 |
// fill in missing
|
|
|
1506 |
if (xrange.from == null)
|
|
|
1507 |
xrange.from = xrange.axis.min;
|
|
|
1508 |
if (xrange.to == null)
|
|
|
1509 |
xrange.to = xrange.axis.max;
|
|
|
1510 |
if (yrange.from == null)
|
|
|
1511 |
yrange.from = yrange.axis.min;
|
|
|
1512 |
if (yrange.to == null)
|
|
|
1513 |
yrange.to = yrange.axis.max;
|
|
|
1514 |
|
|
|
1515 |
// clip
|
|
|
1516 |
if (xrange.to < xrange.axis.min || xrange.from > xrange.axis.max ||
|
|
|
1517 |
yrange.to < yrange.axis.min || yrange.from > yrange.axis.max)
|
|
|
1518 |
continue;
|
|
|
1519 |
|
|
|
1520 |
xrange.from = Math.max(xrange.from, xrange.axis.min);
|
|
|
1521 |
xrange.to = Math.min(xrange.to, xrange.axis.max);
|
|
|
1522 |
yrange.from = Math.max(yrange.from, yrange.axis.min);
|
|
|
1523 |
yrange.to = Math.min(yrange.to, yrange.axis.max);
|
|
|
1524 |
|
|
|
1525 |
if (xrange.from == xrange.to && yrange.from == yrange.to)
|
|
|
1526 |
continue;
|
|
|
1527 |
|
|
|
1528 |
// then draw
|
|
|
1529 |
xrange.from = xrange.axis.p2c(xrange.from);
|
|
|
1530 |
xrange.to = xrange.axis.p2c(xrange.to);
|
|
|
1531 |
yrange.from = yrange.axis.p2c(yrange.from);
|
|
|
1532 |
yrange.to = yrange.axis.p2c(yrange.to);
|
|
|
1533 |
|
|
|
1534 |
if (xrange.from == xrange.to || yrange.from == yrange.to) {
|
|
|
1535 |
// draw line
|
|
|
1536 |
ctx.beginPath();
|
|
|
1537 |
ctx.strokeStyle = m.color || options.grid.markingsColor;
|
|
|
1538 |
ctx.lineWidth = m.lineWidth || options.grid.markingsLineWidth;
|
|
|
1539 |
ctx.moveTo(xrange.from, yrange.from);
|
|
|
1540 |
ctx.lineTo(xrange.to, yrange.to);
|
|
|
1541 |
ctx.stroke();
|
|
|
1542 |
}
|
|
|
1543 |
else {
|
|
|
1544 |
// fill area
|
|
|
1545 |
ctx.fillStyle = m.color || options.grid.markingsColor;
|
|
|
1546 |
ctx.fillRect(xrange.from, yrange.to,
|
|
|
1547 |
xrange.to - xrange.from,
|
|
|
1548 |
yrange.from - yrange.to);
|
|
|
1549 |
}
|
|
|
1550 |
}
|
|
|
1551 |
}
|
|
|
1552 |
|
|
|
1553 |
// draw the ticks
|
|
|
1554 |
var axes = allAxes(), bw = options.grid.borderWidth;
|
|
|
1555 |
|
|
|
1556 |
for (var j = 0; j < axes.length; ++j) {
|
|
|
1557 |
var axis = axes[j], box = axis.box,
|
|
|
1558 |
t = axis.tickLength, x, y, xoff, yoff;
|
|
|
1559 |
if (!axis.show || axis.ticks.length == 0)
|
|
|
1560 |
continue
|
|
|
1561 |
|
|
|
1562 |
ctx.strokeStyle = axis.options.tickColor || $.color.parse(axis.options.color).scale('a', 0.22).toString();
|
|
|
1563 |
ctx.lineWidth = 1;
|
|
|
1564 |
|
|
|
1565 |
// find the edges
|
|
|
1566 |
if (axis.direction == "x") {
|
|
|
1567 |
x = 0;
|
|
|
1568 |
if (t == "full")
|
|
|
1569 |
y = (axis.position == "top" ? 0 : plotHeight);
|
|
|
1570 |
else
|
|
|
1571 |
y = box.top - plotOffset.top + (axis.position == "top" ? box.height : 0);
|
|
|
1572 |
}
|
|
|
1573 |
else {
|
|
|
1574 |
y = 0;
|
|
|
1575 |
if (t == "full")
|
|
|
1576 |
x = (axis.position == "left" ? 0 : plotWidth);
|
|
|
1577 |
else
|
|
|
1578 |
x = box.left - plotOffset.left + (axis.position == "left" ? box.width : 0);
|
|
|
1579 |
}
|
|
|
1580 |
|
|
|
1581 |
// draw tick bar
|
|
|
1582 |
if (!axis.innermost) {
|
|
|
1583 |
ctx.beginPath();
|
|
|
1584 |
xoff = yoff = 0;
|
|
|
1585 |
if (axis.direction == "x")
|
|
|
1586 |
xoff = plotWidth;
|
|
|
1587 |
else
|
|
|
1588 |
yoff = plotHeight;
|
|
|
1589 |
|
|
|
1590 |
if (ctx.lineWidth == 1) {
|
|
|
1591 |
x = Math.floor(x) + 0.5;
|
|
|
1592 |
y = Math.floor(y) + 0.5;
|
|
|
1593 |
}
|
|
|
1594 |
|
|
|
1595 |
ctx.moveTo(x, y);
|
|
|
1596 |
ctx.lineTo(x + xoff, y + yoff);
|
|
|
1597 |
ctx.stroke();
|
|
|
1598 |
}
|
|
|
1599 |
|
|
|
1600 |
// draw ticks
|
|
|
1601 |
ctx.beginPath();
|
|
|
1602 |
for (i = 0; i < axis.ticks.length; ++i) {
|
|
|
1603 |
var v = axis.ticks[i].v;
|
|
|
1604 |
|
|
|
1605 |
xoff = yoff = 0;
|
|
|
1606 |
|
|
|
1607 |
if (v < axis.min || v > axis.max
|
|
|
1608 |
// skip those lying on the axes if we got a border
|
|
|
1609 |
|| (t == "full" && bw > 0
|
|
|
1610 |
&& (v == axis.min || v == axis.max)))
|
|
|
1611 |
continue;
|
|
|
1612 |
|
|
|
1613 |
if (axis.direction == "x") {
|
|
|
1614 |
x = axis.p2c(v);
|
|
|
1615 |
yoff = t == "full" ? -plotHeight : t;
|
|
|
1616 |
|
|
|
1617 |
if (axis.position == "top")
|
|
|
1618 |
yoff = -yoff;
|
|
|
1619 |
}
|
|
|
1620 |
else {
|
|
|
1621 |
y = axis.p2c(v);
|
|
|
1622 |
xoff = t == "full" ? -plotWidth : t;
|
|
|
1623 |
|
|
|
1624 |
if (axis.position == "left")
|
|
|
1625 |
xoff = -xoff;
|
|
|
1626 |
}
|
|
|
1627 |
|
|
|
1628 |
if (ctx.lineWidth == 1) {
|
|
|
1629 |
if (axis.direction == "x")
|
|
|
1630 |
x = Math.floor(x) + 0.5;
|
|
|
1631 |
else
|
|
|
1632 |
y = Math.floor(y) + 0.5;
|
|
|
1633 |
}
|
|
|
1634 |
|
|
|
1635 |
ctx.moveTo(x, y);
|
|
|
1636 |
ctx.lineTo(x + xoff, y + yoff);
|
|
|
1637 |
}
|
|
|
1638 |
|
|
|
1639 |
ctx.stroke();
|
|
|
1640 |
}
|
|
|
1641 |
|
|
|
1642 |
|
|
|
1643 |
// draw border
|
|
|
1644 |
if (bw) {
|
|
|
1645 |
ctx.lineWidth = bw;
|
|
|
1646 |
ctx.strokeStyle = options.grid.borderColor;
|
|
|
1647 |
ctx.strokeRect(-bw/2, -bw/2, plotWidth + bw, plotHeight + bw);
|
|
|
1648 |
}
|
|
|
1649 |
|
|
|
1650 |
ctx.restore();
|
|
|
1651 |
}
|
|
|
1652 |
|
|
|
1653 |
function insertAxisLabels() {
|
|
|
1654 |
placeholder.find(".tickLabels").remove();
|
|
|
1655 |
|
|
|
1656 |
var html = ['<div class="tickLabels" style="font-size:smaller">'];
|
|
|
1657 |
|
|
|
1658 |
var axes = allAxes();
|
|
|
1659 |
for (var j = 0; j < axes.length; ++j) {
|
|
|
1660 |
var axis = axes[j], box = axis.box;
|
|
|
1661 |
if (!axis.show)
|
|
|
1662 |
continue;
|
|
|
1663 |
//debug: html.push('<div style="position:absolute;opacity:0.10;background-color:red;left:' + box.left + 'px;top:' + box.top + 'px;width:' + box.width + 'px;height:' + box.height + 'px"></div>')
|
|
|
1664 |
html.push('<div class="' + axis.direction + 'Axis ' + axis.direction + axis.n + 'Axis" style="color:' + axis.options.color + '">');
|
|
|
1665 |
for (var i = 0; i < axis.ticks.length; ++i) {
|
|
|
1666 |
var tick = axis.ticks[i];
|
|
|
1667 |
if (!tick.label || tick.v < axis.min || tick.v > axis.max)
|
|
|
1668 |
continue;
|
|
|
1669 |
|
|
|
1670 |
var pos = {}, align;
|
|
|
1671 |
|
|
|
1672 |
if (axis.direction == "x") {
|
|
|
1673 |
align = "center";
|
|
|
1674 |
pos.left = Math.round(plotOffset.left + axis.p2c(tick.v) - axis.labelWidth/2);
|
|
|
1675 |
if (axis.position == "bottom")
|
|
|
1676 |
pos.top = box.top + box.padding;
|
|
|
1677 |
else
|
|
|
1678 |
pos.bottom = canvasHeight - (box.top + box.height - box.padding);
|
|
|
1679 |
}
|
|
|
1680 |
else {
|
|
|
1681 |
pos.top = Math.round(plotOffset.top + axis.p2c(tick.v) - axis.labelHeight/2);
|
|
|
1682 |
if (axis.position == "left") {
|
|
|
1683 |
pos.right = canvasWidth - (box.left + box.width - box.padding)
|
|
|
1684 |
align = "right";
|
|
|
1685 |
}
|
|
|
1686 |
else {
|
|
|
1687 |
pos.left = box.left + box.padding;
|
|
|
1688 |
align = "left";
|
|
|
1689 |
}
|
|
|
1690 |
}
|
|
|
1691 |
|
|
|
1692 |
pos.width = axis.labelWidth;
|
|
|
1693 |
|
|
|
1694 |
var style = ["position:absolute", "text-align:" + align ];
|
|
|
1695 |
for (var a in pos)
|
|
|
1696 |
style.push(a + ":" + pos[a] + "px")
|
|
|
1697 |
|
|
|
1698 |
html.push('<div class="tickLabel" style="' + style.join(';') + '">' + tick.label + '</div>');
|
|
|
1699 |
}
|
|
|
1700 |
html.push('</div>');
|
|
|
1701 |
}
|
|
|
1702 |
|
|
|
1703 |
html.push('</div>');
|
|
|
1704 |
|
|
|
1705 |
placeholder.append(html.join(""));
|
|
|
1706 |
}
|
|
|
1707 |
|
|
|
1708 |
function drawSeries(series) {
|
|
|
1709 |
if (series.lines.show)
|
|
|
1710 |
drawSeriesLines(series);
|
|
|
1711 |
if (series.bars.show)
|
|
|
1712 |
drawSeriesBars(series);
|
|
|
1713 |
if (series.points.show)
|
|
|
1714 |
drawSeriesPoints(series);
|
|
|
1715 |
}
|
|
|
1716 |
|
|
|
1717 |
function drawSeriesLines(series) {
|
|
|
1718 |
function plotLine(datapoints, xoffset, yoffset, axisx, axisy) {
|
|
|
1719 |
var points = datapoints.points,
|
|
|
1720 |
ps = datapoints.pointsize,
|
|
|
1721 |
prevx = null, prevy = null;
|
|
|
1722 |
|
|
|
1723 |
ctx.beginPath();
|
|
|
1724 |
for (var i = ps; i < points.length; i += ps) {
|
|
|
1725 |
var x1 = points[i - ps], y1 = points[i - ps + 1],
|
|
|
1726 |
x2 = points[i], y2 = points[i + 1];
|
|
|
1727 |
|
|
|
1728 |
if (x1 == null || x2 == null)
|
|
|
1729 |
continue;
|
|
|
1730 |
|
|
|
1731 |
// clip with ymin
|
|
|
1732 |
if (y1 <= y2 && y1 < axisy.min) {
|
|
|
1733 |
if (y2 < axisy.min)
|
|
|
1734 |
continue; // line segment is outside
|
|
|
1735 |
// compute new intersection point
|
|
|
1736 |
x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
|
|
|
1737 |
y1 = axisy.min;
|
|
|
1738 |
}
|
|
|
1739 |
else if (y2 <= y1 && y2 < axisy.min) {
|
|
|
1740 |
if (y1 < axisy.min)
|
|
|
1741 |
continue;
|
|
|
1742 |
x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
|
|
|
1743 |
y2 = axisy.min;
|
|
|
1744 |
}
|
|
|
1745 |
|
|
|
1746 |
// clip with ymax
|
|
|
1747 |
if (y1 >= y2 && y1 > axisy.max) {
|
|
|
1748 |
if (y2 > axisy.max)
|
|
|
1749 |
continue;
|
|
|
1750 |
x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
|
|
|
1751 |
y1 = axisy.max;
|
|
|
1752 |
}
|
|
|
1753 |
else if (y2 >= y1 && y2 > axisy.max) {
|
|
|
1754 |
if (y1 > axisy.max)
|
|
|
1755 |
continue;
|
|
|
1756 |
x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
|
|
|
1757 |
y2 = axisy.max;
|
|
|
1758 |
}
|
|
|
1759 |
|
|
|
1760 |
// clip with xmin
|
|
|
1761 |
if (x1 <= x2 && x1 < axisx.min) {
|
|
|
1762 |
if (x2 < axisx.min)
|
|
|
1763 |
continue;
|
|
|
1764 |
y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
|
|
|
1765 |
x1 = axisx.min;
|
|
|
1766 |
}
|
|
|
1767 |
else if (x2 <= x1 && x2 < axisx.min) {
|
|
|
1768 |
if (x1 < axisx.min)
|
|
|
1769 |
continue;
|
|
|
1770 |
y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
|
|
|
1771 |
x2 = axisx.min;
|
|
|
1772 |
}
|
|
|
1773 |
|
|
|
1774 |
// clip with xmax
|
|
|
1775 |
if (x1 >= x2 && x1 > axisx.max) {
|
|
|
1776 |
if (x2 > axisx.max)
|
|
|
1777 |
continue;
|
|
|
1778 |
y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
|
|
|
1779 |
x1 = axisx.max;
|
|
|
1780 |
}
|
|
|
1781 |
else if (x2 >= x1 && x2 > axisx.max) {
|
|
|
1782 |
if (x1 > axisx.max)
|
|
|
1783 |
continue;
|
|
|
1784 |
y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
|
|
|
1785 |
x2 = axisx.max;
|
|
|
1786 |
}
|
|
|
1787 |
|
|
|
1788 |
if (x1 != prevx || y1 != prevy)
|
|
|
1789 |
ctx.moveTo(axisx.p2c(x1) + xoffset, axisy.p2c(y1) + yoffset);
|
|
|
1790 |
|
|
|
1791 |
prevx = x2;
|
|
|
1792 |
prevy = y2;
|
|
|
1793 |
ctx.lineTo(axisx.p2c(x2) + xoffset, axisy.p2c(y2) + yoffset);
|
|
|
1794 |
}
|
|
|
1795 |
ctx.stroke();
|
|
|
1796 |
}
|
|
|
1797 |
|
|
|
1798 |
function plotLineArea(datapoints, axisx, axisy) {
|
|
|
1799 |
var points = datapoints.points,
|
|
|
1800 |
ps = datapoints.pointsize,
|
|
|
1801 |
bottom = Math.min(Math.max(0, axisy.min), axisy.max),
|
|
|
1802 |
i = 0, top, areaOpen = false,
|
|
|
1803 |
ypos = 1, segmentStart = 0, segmentEnd = 0;
|
|
|
1804 |
|
|
|
1805 |
// we process each segment in two turns, first forward
|
|
|
1806 |
// direction to sketch out top, then once we hit the
|
|
|
1807 |
// end we go backwards to sketch the bottom
|
|
|
1808 |
while (true) {
|
|
|
1809 |
if (ps > 0 && i > points.length + ps)
|
|
|
1810 |
break;
|
|
|
1811 |
|
|
|
1812 |
i += ps; // ps is negative if going backwards
|
|
|
1813 |
|
|
|
1814 |
var x1 = points[i - ps],
|
|
|
1815 |
y1 = points[i - ps + ypos],
|
|
|
1816 |
x2 = points[i], y2 = points[i + ypos];
|
|
|
1817 |
|
|
|
1818 |
if (areaOpen) {
|
|
|
1819 |
if (ps > 0 && x1 != null && x2 == null) {
|
|
|
1820 |
// at turning point
|
|
|
1821 |
segmentEnd = i;
|
|
|
1822 |
ps = -ps;
|
|
|
1823 |
ypos = 2;
|
|
|
1824 |
continue;
|
|
|
1825 |
}
|
|
|
1826 |
|
|
|
1827 |
if (ps < 0 && i == segmentStart + ps) {
|
|
|
1828 |
// done with the reverse sweep
|
|
|
1829 |
ctx.fill();
|
|
|
1830 |
areaOpen = false;
|
|
|
1831 |
ps = -ps;
|
|
|
1832 |
ypos = 1;
|
|
|
1833 |
i = segmentStart = segmentEnd + ps;
|
|
|
1834 |
continue;
|
|
|
1835 |
}
|
|
|
1836 |
}
|
|
|
1837 |
|
|
|
1838 |
if (x1 == null || x2 == null)
|
|
|
1839 |
continue;
|
|
|
1840 |
|
|
|
1841 |
// clip x values
|
|
|
1842 |
|
|
|
1843 |
// clip with xmin
|
|
|
1844 |
if (x1 <= x2 && x1 < axisx.min) {
|
|
|
1845 |
if (x2 < axisx.min)
|
|
|
1846 |
continue;
|
|
|
1847 |
y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
|
|
|
1848 |
x1 = axisx.min;
|
|
|
1849 |
}
|
|
|
1850 |
else if (x2 <= x1 && x2 < axisx.min) {
|
|
|
1851 |
if (x1 < axisx.min)
|
|
|
1852 |
continue;
|
|
|
1853 |
y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
|
|
|
1854 |
x2 = axisx.min;
|
|
|
1855 |
}
|
|
|
1856 |
|
|
|
1857 |
// clip with xmax
|
|
|
1858 |
if (x1 >= x2 && x1 > axisx.max) {
|
|
|
1859 |
if (x2 > axisx.max)
|
|
|
1860 |
continue;
|
|
|
1861 |
y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
|
|
|
1862 |
x1 = axisx.max;
|
|
|
1863 |
}
|
|
|
1864 |
else if (x2 >= x1 && x2 > axisx.max) {
|
|
|
1865 |
if (x1 > axisx.max)
|
|
|
1866 |
continue;
|
|
|
1867 |
y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
|
|
|
1868 |
x2 = axisx.max;
|
|
|
1869 |
}
|
|
|
1870 |
|
|
|
1871 |
if (!areaOpen) {
|
|
|
1872 |
// open area
|
|
|
1873 |
ctx.beginPath();
|
|
|
1874 |
ctx.moveTo(axisx.p2c(x1), axisy.p2c(bottom));
|
|
|
1875 |
areaOpen = true;
|
|
|
1876 |
}
|
|
|
1877 |
|
|
|
1878 |
// now first check the case where both is outside
|
|
|
1879 |
if (y1 >= axisy.max && y2 >= axisy.max) {
|
|
|
1880 |
ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.max));
|
|
|
1881 |
ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.max));
|
|
|
1882 |
continue;
|
|
|
1883 |
}
|
|
|
1884 |
else if (y1 <= axisy.min && y2 <= axisy.min) {
|
|
|
1885 |
ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.min));
|
|
|
1886 |
ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.min));
|
|
|
1887 |
continue;
|
|
|
1888 |
}
|
|
|
1889 |
|
|
|
1890 |
// else it's a bit more complicated, there might
|
|
|
1891 |
// be a flat maxed out rectangle first, then a
|
|
|
1892 |
// triangular cutout or reverse; to find these
|
|
|
1893 |
// keep track of the current x values
|
|
|
1894 |
var x1old = x1, x2old = x2;
|
|
|
1895 |
|
|
|
1896 |
// clip the y values, without shortcutting, we
|
|
|
1897 |
// go through all cases in turn
|
|
|
1898 |
|
|
|
1899 |
// clip with ymin
|
|
|
1900 |
if (y1 <= y2 && y1 < axisy.min && y2 >= axisy.min) {
|
|
|
1901 |
x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
|
|
|
1902 |
y1 = axisy.min;
|
|
|
1903 |
}
|
|
|
1904 |
else if (y2 <= y1 && y2 < axisy.min && y1 >= axisy.min) {
|
|
|
1905 |
x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
|
|
|
1906 |
y2 = axisy.min;
|
|
|
1907 |
}
|
|
|
1908 |
|
|
|
1909 |
// clip with ymax
|
|
|
1910 |
if (y1 >= y2 && y1 > axisy.max && y2 <= axisy.max) {
|
|
|
1911 |
x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
|
|
|
1912 |
y1 = axisy.max;
|
|
|
1913 |
}
|
|
|
1914 |
else if (y2 >= y1 && y2 > axisy.max && y1 <= axisy.max) {
|
|
|
1915 |
x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
|
|
|
1916 |
y2 = axisy.max;
|
|
|
1917 |
}
|
|
|
1918 |
|
|
|
1919 |
// if the x value was changed we got a rectangle
|
|
|
1920 |
// to fill
|
|
|
1921 |
if (x1 != x1old) {
|
|
|
1922 |
ctx.lineTo(axisx.p2c(x1old), axisy.p2c(y1));
|
|
|
1923 |
// it goes to (x1, y1), but we fill that below
|
|
|
1924 |
}
|
|
|
1925 |
|
|
|
1926 |
// fill triangular section, this sometimes result
|
|
|
1927 |
// in redundant points if (x1, y1) hasn't changed
|
|
|
1928 |
// from previous line to, but we just ignore that
|
|
|
1929 |
ctx.lineTo(axisx.p2c(x1), axisy.p2c(y1));
|
|
|
1930 |
ctx.lineTo(axisx.p2c(x2), axisy.p2c(y2));
|
|
|
1931 |
|
|
|
1932 |
// fill the other rectangle if it's there
|
|
|
1933 |
if (x2 != x2old) {
|
|
|
1934 |
ctx.lineTo(axisx.p2c(x2), axisy.p2c(y2));
|
|
|
1935 |
ctx.lineTo(axisx.p2c(x2old), axisy.p2c(y2));
|
|
|
1936 |
}
|
|
|
1937 |
}
|
|
|
1938 |
}
|
|
|
1939 |
|
|
|
1940 |
ctx.save();
|
|
|
1941 |
ctx.translate(plotOffset.left, plotOffset.top);
|
|
|
1942 |
ctx.lineJoin = "round";
|
|
|
1943 |
|
|
|
1944 |
var lw = series.lines.lineWidth,
|
|
|
1945 |
sw = series.shadowSize;
|
|
|
1946 |
// FIXME: consider another form of shadow when filling is turned on
|
|
|
1947 |
if (lw > 0 && sw > 0) {
|
|
|
1948 |
// draw shadow as a thick and thin line with transparency
|
|
|
1949 |
ctx.lineWidth = sw;
|
|
|
1950 |
ctx.strokeStyle = "rgba(0,0,0,0.1)";
|
|
|
1951 |
// position shadow at angle from the mid of line
|
|
|
1952 |
var angle = Math.PI/18;
|
|
|
1953 |
plotLine(series.datapoints, Math.sin(angle) * (lw/2 + sw/2), Math.cos(angle) * (lw/2 + sw/2), series.xaxis, series.yaxis);
|
|
|
1954 |
ctx.lineWidth = sw/2;
|
|
|
1955 |
plotLine(series.datapoints, Math.sin(angle) * (lw/2 + sw/4), Math.cos(angle) * (lw/2 + sw/4), series.xaxis, series.yaxis);
|
|
|
1956 |
}
|
|
|
1957 |
|
|
|
1958 |
ctx.lineWidth = lw;
|
|
|
1959 |
ctx.strokeStyle = series.color;
|
|
|
1960 |
var fillStyle = getFillStyle(series.lines, series.color, 0, plotHeight);
|
|
|
1961 |
if (fillStyle) {
|
|
|
1962 |
ctx.fillStyle = fillStyle;
|
|
|
1963 |
plotLineArea(series.datapoints, series.xaxis, series.yaxis);
|
|
|
1964 |
}
|
|
|
1965 |
|
|
|
1966 |
if (lw > 0)
|
|
|
1967 |
plotLine(series.datapoints, 0, 0, series.xaxis, series.yaxis);
|
|
|
1968 |
ctx.restore();
|
|
|
1969 |
}
|
|
|
1970 |
|
|
|
1971 |
function drawSeriesPoints(series) {
|
|
|
1972 |
function plotPoints(datapoints, radius, fillStyle, offset, shadow, axisx, axisy, symbol) {
|
|
|
1973 |
var points = datapoints.points, ps = datapoints.pointsize;
|
|
|
1974 |
|
|
|
1975 |
for (var i = 0; i < points.length; i += ps) {
|
|
|
1976 |
var x = points[i], y = points[i + 1];
|
|
|
1977 |
if (x == null || x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max)
|
|
|
1978 |
continue;
|
|
|
1979 |
|
|
|
1980 |
ctx.beginPath();
|
|
|
1981 |
x = axisx.p2c(x);
|
|
|
1982 |
y = axisy.p2c(y) + offset;
|
|
|
1983 |
if (symbol == "circle")
|
|
|
1984 |
ctx.arc(x, y, radius, 0, shadow ? Math.PI : Math.PI * 2, false);
|
|
|
1985 |
else
|
|
|
1986 |
symbol(ctx, x, y, radius, shadow);
|
|
|
1987 |
ctx.closePath();
|
|
|
1988 |
|
|
|
1989 |
if (fillStyle) {
|
|
|
1990 |
ctx.fillStyle = fillStyle;
|
|
|
1991 |
ctx.fill();
|
|
|
1992 |
}
|
|
|
1993 |
ctx.stroke();
|
|
|
1994 |
}
|
|
|
1995 |
}
|
|
|
1996 |
|
|
|
1997 |
ctx.save();
|
|
|
1998 |
ctx.translate(plotOffset.left, plotOffset.top);
|
|
|
1999 |
|
|
|
2000 |
var lw = series.points.lineWidth,
|
|
|
2001 |
sw = series.shadowSize,
|
|
|
2002 |
radius = series.points.radius,
|
|
|
2003 |
symbol = series.points.symbol;
|
|
|
2004 |
if (lw > 0 && sw > 0) {
|
|
|
2005 |
// draw shadow in two steps
|
|
|
2006 |
var w = sw / 2;
|
|
|
2007 |
ctx.lineWidth = w;
|
|
|
2008 |
ctx.strokeStyle = "rgba(0,0,0,0.1)";
|
|
|
2009 |
plotPoints(series.datapoints, radius, null, w + w/2, true,
|
|
|
2010 |
series.xaxis, series.yaxis, symbol);
|
|
|
2011 |
|
|
|
2012 |
ctx.strokeStyle = "rgba(0,0,0,0.2)";
|
|
|
2013 |
plotPoints(series.datapoints, radius, null, w/2, true,
|
|
|
2014 |
series.xaxis, series.yaxis, symbol);
|
|
|
2015 |
}
|
|
|
2016 |
|
|
|
2017 |
ctx.lineWidth = lw;
|
|
|
2018 |
ctx.strokeStyle = series.color;
|
|
|
2019 |
plotPoints(series.datapoints, radius,
|
|
|
2020 |
getFillStyle(series.points, series.color), 0, false,
|
|
|
2021 |
series.xaxis, series.yaxis, symbol);
|
|
|
2022 |
ctx.restore();
|
|
|
2023 |
}
|
|
|
2024 |
|
|
|
2025 |
function drawBar(x, y, b, barLeft, barRight, offset, fillStyleCallback, axisx, axisy, c, horizontal, lineWidth) {
|
|
|
2026 |
var left, right, bottom, top,
|
|
|
2027 |
drawLeft, drawRight, drawTop, drawBottom,
|
|
|
2028 |
tmp;
|
|
|
2029 |
|
|
|
2030 |
// in horizontal mode, we start the bar from the left
|
|
|
2031 |
// instead of from the bottom so it appears to be
|
|
|
2032 |
// horizontal rather than vertical
|
|
|
2033 |
if (horizontal) {
|
|
|
2034 |
drawBottom = drawRight = drawTop = true;
|
|
|
2035 |
drawLeft = false;
|
|
|
2036 |
left = b;
|
|
|
2037 |
right = x;
|
|
|
2038 |
top = y + barLeft;
|
|
|
2039 |
bottom = y + barRight;
|
|
|
2040 |
|
|
|
2041 |
// account for negative bars
|
|
|
2042 |
if (right < left) {
|
|
|
2043 |
tmp = right;
|
|
|
2044 |
right = left;
|
|
|
2045 |
left = tmp;
|
|
|
2046 |
drawLeft = true;
|
|
|
2047 |
drawRight = false;
|
|
|
2048 |
}
|
|
|
2049 |
}
|
|
|
2050 |
else {
|
|
|
2051 |
drawLeft = drawRight = drawTop = true;
|
|
|
2052 |
drawBottom = false;
|
|
|
2053 |
left = x + barLeft;
|
|
|
2054 |
right = x + barRight;
|
|
|
2055 |
bottom = b;
|
|
|
2056 |
top = y;
|
|
|
2057 |
|
|
|
2058 |
// account for negative bars
|
|
|
2059 |
if (top < bottom) {
|
|
|
2060 |
tmp = top;
|
|
|
2061 |
top = bottom;
|
|
|
2062 |
bottom = tmp;
|
|
|
2063 |
drawBottom = true;
|
|
|
2064 |
drawTop = false;
|
|
|
2065 |
}
|
|
|
2066 |
}
|
|
|
2067 |
|
|
|
2068 |
// clip
|
|
|
2069 |
if (right < axisx.min || left > axisx.max ||
|
|
|
2070 |
top < axisy.min || bottom > axisy.max)
|
|
|
2071 |
return;
|
|
|
2072 |
|
|
|
2073 |
if (left < axisx.min) {
|
|
|
2074 |
left = axisx.min;
|
|
|
2075 |
drawLeft = false;
|
|
|
2076 |
}
|
|
|
2077 |
|
|
|
2078 |
if (right > axisx.max) {
|
|
|
2079 |
right = axisx.max;
|
|
|
2080 |
drawRight = false;
|
|
|
2081 |
}
|
|
|
2082 |
|
|
|
2083 |
if (bottom < axisy.min) {
|
|
|
2084 |
bottom = axisy.min;
|
|
|
2085 |
drawBottom = false;
|
|
|
2086 |
}
|
|
|
2087 |
|
|
|
2088 |
if (top > axisy.max) {
|
|
|
2089 |
top = axisy.max;
|
|
|
2090 |
drawTop = false;
|
|
|
2091 |
}
|
|
|
2092 |
|
|
|
2093 |
left = axisx.p2c(left);
|
|
|
2094 |
bottom = axisy.p2c(bottom);
|
|
|
2095 |
right = axisx.p2c(right);
|
|
|
2096 |
top = axisy.p2c(top);
|
|
|
2097 |
|
|
|
2098 |
// fill the bar
|
|
|
2099 |
if (fillStyleCallback) {
|
|
|
2100 |
c.beginPath();
|
|
|
2101 |
c.moveTo(left, bottom);
|
|
|
2102 |
c.lineTo(left, top);
|
|
|
2103 |
c.lineTo(right, top);
|
|
|
2104 |
c.lineTo(right, bottom);
|
|
|
2105 |
c.fillStyle = fillStyleCallback(bottom, top);
|
|
|
2106 |
c.fill();
|
|
|
2107 |
}
|
|
|
2108 |
|
|
|
2109 |
// draw outline
|
|
|
2110 |
if (lineWidth > 0 && (drawLeft || drawRight || drawTop || drawBottom)) {
|
|
|
2111 |
c.beginPath();
|
|
|
2112 |
|
|
|
2113 |
// FIXME: inline moveTo is buggy with excanvas
|
|
|
2114 |
c.moveTo(left, bottom + offset);
|
|
|
2115 |
if (drawLeft)
|
|
|
2116 |
c.lineTo(left, top + offset);
|
|
|
2117 |
else
|
|
|
2118 |
c.moveTo(left, top + offset);
|
|
|
2119 |
if (drawTop)
|
|
|
2120 |
c.lineTo(right, top + offset);
|
|
|
2121 |
else
|
|
|
2122 |
c.moveTo(right, top + offset);
|
|
|
2123 |
if (drawRight)
|
|
|
2124 |
c.lineTo(right, bottom + offset);
|
|
|
2125 |
else
|
|
|
2126 |
c.moveTo(right, bottom + offset);
|
|
|
2127 |
if (drawBottom)
|
|
|
2128 |
c.lineTo(left, bottom + offset);
|
|
|
2129 |
else
|
|
|
2130 |
c.moveTo(left, bottom + offset);
|
|
|
2131 |
c.stroke();
|
|
|
2132 |
}
|
|
|
2133 |
}
|
|
|
2134 |
|
|
|
2135 |
function drawSeriesBars(series) {
|
|
|
2136 |
function plotBars(datapoints, barLeft, barRight, offset, fillStyleCallback, axisx, axisy) {
|
|
|
2137 |
var points = datapoints.points, ps = datapoints.pointsize;
|
|
|
2138 |
|
|
|
2139 |
for (var i = 0; i < points.length; i += ps) {
|
|
|
2140 |
if (points[i] == null)
|
|
|
2141 |
continue;
|
|
|
2142 |
drawBar(points[i], points[i + 1], points[i + 2], barLeft, barRight, offset, fillStyleCallback, axisx, axisy, ctx, series.bars.horizontal, series.bars.lineWidth);
|
|
|
2143 |
}
|
|
|
2144 |
}
|
|
|
2145 |
|
|
|
2146 |
ctx.save();
|
|
|
2147 |
ctx.translate(plotOffset.left, plotOffset.top);
|
|
|
2148 |
|
|
|
2149 |
// FIXME: figure out a way to add shadows (for instance along the right edge)
|
|
|
2150 |
ctx.lineWidth = series.bars.lineWidth;
|
|
|
2151 |
ctx.strokeStyle = series.color;
|
|
|
2152 |
var barLeft = series.bars.align == "left" ? 0 : -series.bars.barWidth/2;
|
|
|
2153 |
var fillStyleCallback = series.bars.fill ? function (bottom, top) { return getFillStyle(series.bars, series.color, bottom, top); } : null;
|
|
|
2154 |
plotBars(series.datapoints, barLeft, barLeft + series.bars.barWidth, 0, fillStyleCallback, series.xaxis, series.yaxis);
|
|
|
2155 |
ctx.restore();
|
|
|
2156 |
}
|
|
|
2157 |
|
|
|
2158 |
function getFillStyle(filloptions, seriesColor, bottom, top) {
|
|
|
2159 |
var fill = filloptions.fill;
|
|
|
2160 |
if (!fill)
|
|
|
2161 |
return null;
|
|
|
2162 |
|
|
|
2163 |
if (filloptions.fillColor)
|
|
|
2164 |
return getColorOrGradient(filloptions.fillColor, bottom, top, seriesColor);
|
|
|
2165 |
|
|
|
2166 |
var c = $.color.parse(seriesColor);
|
|
|
2167 |
c.a = typeof fill == "number" ? fill : 0.4;
|
|
|
2168 |
c.normalize();
|
|
|
2169 |
return c.toString();
|
|
|
2170 |
}
|
|
|
2171 |
|
|
|
2172 |
function insertLegend() {
|
|
|
2173 |
placeholder.find(".legend").remove();
|
|
|
2174 |
|
|
|
2175 |
if (!options.legend.show)
|
|
|
2176 |
return;
|
|
|
2177 |
|
|
|
2178 |
var fragments = [], rowStarted = false,
|
|
|
2179 |
lf = options.legend.labelFormatter, s, label;
|
|
|
2180 |
for (var i = 0; i < series.length; ++i) {
|
|
|
2181 |
s = series[i];
|
|
|
2182 |
label = s.label;
|
|
|
2183 |
if (!label)
|
|
|
2184 |
continue;
|
|
|
2185 |
|
|
|
2186 |
if (i % options.legend.noColumns == 0) {
|
|
|
2187 |
if (rowStarted)
|
|
|
2188 |
fragments.push('</tr>');
|
|
|
2189 |
fragments.push('<tr>');
|
|
|
2190 |
rowStarted = true;
|
|
|
2191 |
}
|
|
|
2192 |
|
|
|
2193 |
if (lf)
|
|
|
2194 |
label = lf(label, s);
|
|
|
2195 |
|
|
|
2196 |
fragments.push(
|
|
|
2197 |
'<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>' +
|
|
|
2198 |
'<td class="legendLabel">' + label + '</td>');
|
|
|
2199 |
}
|
|
|
2200 |
if (rowStarted)
|
|
|
2201 |
fragments.push('</tr>');
|
|
|
2202 |
|
|
|
2203 |
if (fragments.length == 0)
|
|
|
2204 |
return;
|
|
|
2205 |
|
|
|
2206 |
var table = '<table style="font-size:smaller;color:' + options.grid.color + '">' + fragments.join("") + '</table>';
|
|
|
2207 |
if (options.legend.container != null)
|
|
|
2208 |
$(options.legend.container).html(table);
|
|
|
2209 |
else {
|
|
|
2210 |
var pos = "",
|
|
|
2211 |
p = options.legend.position,
|
|
|
2212 |
m = options.legend.margin;
|
|
|
2213 |
if (m[0] == null)
|
|
|
2214 |
m = [m, m];
|
|
|
2215 |
if (p.charAt(0) == "n")
|
|
|
2216 |
pos += 'top:' + (m[1] + plotOffset.top) + 'px;';
|
|
|
2217 |
else if (p.charAt(0) == "s")
|
|
|
2218 |
pos += 'bottom:' + (m[1] + plotOffset.bottom) + 'px;';
|
|
|
2219 |
if (p.charAt(1) == "e")
|
|
|
2220 |
pos += 'right:' + (m[0] + plotOffset.right) + 'px;';
|
|
|
2221 |
else if (p.charAt(1) == "w")
|
|
|
2222 |
pos += 'left:' + (m[0] + plotOffset.left) + 'px;';
|
|
|
2223 |
var legend = $('<div class="legend">' + table.replace('style="', 'style="position:absolute;' + pos +';') + '</div>').appendTo(placeholder);
|
|
|
2224 |
if (options.legend.backgroundOpacity != 0.0) {
|
|
|
2225 |
// put in the transparent background
|
|
|
2226 |
// separately to avoid blended labels and
|
|
|
2227 |
// label boxes
|
|
|
2228 |
var c = options.legend.backgroundColor;
|
|
|
2229 |
if (c == null) {
|
|
|
2230 |
c = options.grid.backgroundColor;
|
|
|
2231 |
if (c && typeof c == "string")
|
|
|
2232 |
c = $.color.parse(c);
|
|
|
2233 |
else
|
|
|
2234 |
c = $.color.extract(legend, 'background-color');
|
|
|
2235 |
c.a = 1;
|
|
|
2236 |
c = c.toString();
|
|
|
2237 |
}
|
|
|
2238 |
var div = legend.children();
|
|
|
2239 |
$('<div style="position:absolute;width:' + div.width() + 'px;height:' + div.height() + 'px;' + pos +'background-color:' + c + ';"> </div>').prependTo(legend).css('opacity', options.legend.backgroundOpacity);
|
|
|
2240 |
}
|
|
|
2241 |
}
|
|
|
2242 |
}
|
|
|
2243 |
|
|
|
2244 |
|
|
|
2245 |
// interactive features
|
|
|
2246 |
|
|
|
2247 |
var highlights = [],
|
|
|
2248 |
redrawTimeout = null;
|
|
|
2249 |
|
|
|
2250 |
// returns the data item the mouse is over, or null if none is found
|
|
|
2251 |
function findNearbyItem(mouseX, mouseY, seriesFilter) {
|
|
|
2252 |
var maxDistance = options.grid.mouseActiveRadius,
|
|
|
2253 |
smallestDistance = maxDistance * maxDistance + 1,
|
|
|
2254 |
item = null, foundPoint = false, i, j;
|
|
|
2255 |
|
|
|
2256 |
for (i = series.length - 1; i >= 0; --i) {
|
|
|
2257 |
if (!seriesFilter(series[i]))
|
|
|
2258 |
continue;
|
|
|
2259 |
|
|
|
2260 |
var s = series[i],
|
|
|
2261 |
axisx = s.xaxis,
|
|
|
2262 |
axisy = s.yaxis,
|
|
|
2263 |
points = s.datapoints.points,
|
|
|
2264 |
ps = s.datapoints.pointsize,
|
|
|
2265 |
mx = axisx.c2p(mouseX), // precompute some stuff to make the loop faster
|
|
|
2266 |
my = axisy.c2p(mouseY),
|
|
|
2267 |
maxx = maxDistance / axisx.scale,
|
|
|
2268 |
maxy = maxDistance / axisy.scale;
|
|
|
2269 |
|
|
|
2270 |
// with inverse transforms, we can't use the maxx/maxy
|
|
|
2271 |
// optimization, sadly
|
|
|
2272 |
if (axisx.options.inverseTransform)
|
|
|
2273 |
maxx = Number.MAX_VALUE;
|
|
|
2274 |
if (axisy.options.inverseTransform)
|
|
|
2275 |
maxy = Number.MAX_VALUE;
|
|
|
2276 |
|
|
|
2277 |
if (s.lines.show || s.points.show) {
|
|
|
2278 |
for (j = 0; j < points.length; j += ps) {
|
|
|
2279 |
var x = points[j], y = points[j + 1];
|
|
|
2280 |
if (x == null)
|
|
|
2281 |
continue;
|
|
|
2282 |
|
|
|
2283 |
// For points and lines, the cursor must be within a
|
|
|
2284 |
// certain distance to the data point
|
|
|
2285 |
if (x - mx > maxx || x - mx < -maxx ||
|
|
|
2286 |
y - my > maxy || y - my < -maxy)
|
|
|
2287 |
continue;
|
|
|
2288 |
|
|
|
2289 |
// We have to calculate distances in pixels, not in
|
|
|
2290 |
// data units, because the scales of the axes may be different
|
|
|
2291 |
var dx = Math.abs(axisx.p2c(x) - mouseX),
|
|
|
2292 |
dy = Math.abs(axisy.p2c(y) - mouseY),
|
|
|
2293 |
dist = dx * dx + dy * dy; // we save the sqrt
|
|
|
2294 |
|
|
|
2295 |
// use <= to ensure last point takes precedence
|
|
|
2296 |
// (last generally means on top of)
|
|
|
2297 |
if (dist < smallestDistance) {
|
|
|
2298 |
smallestDistance = dist;
|
|
|
2299 |
item = [i, j / ps];
|
|
|
2300 |
}
|
|
|
2301 |
}
|
|
|
2302 |
}
|
|
|
2303 |
|
|
|
2304 |
if (s.bars.show && !item) { // no other point can be nearby
|
|
|
2305 |
var barLeft = s.bars.align == "left" ? 0 : -s.bars.barWidth/2,
|
|
|
2306 |
barRight = barLeft + s.bars.barWidth;
|
|
|
2307 |
|
|
|
2308 |
for (j = 0; j < points.length; j += ps) {
|
|
|
2309 |
var x = points[j], y = points[j + 1], b = points[j + 2];
|
|
|
2310 |
if (x == null)
|
|
|
2311 |
continue;
|
|
|
2312 |
|
|
|
2313 |
// for a bar graph, the cursor must be inside the bar
|
|
|
2314 |
if (series[i].bars.horizontal ?
|
|
|
2315 |
(mx <= Math.max(b, x) && mx >= Math.min(b, x) &&
|
|
|
2316 |
my >= y + barLeft && my <= y + barRight) :
|
|
|
2317 |
(mx >= x + barLeft && mx <= x + barRight &&
|
|
|
2318 |
my >= Math.min(b, y) && my <= Math.max(b, y)))
|
|
|
2319 |
item = [i, j / ps];
|
|
|
2320 |
}
|
|
|
2321 |
}
|
|
|
2322 |
}
|
|
|
2323 |
|
|
|
2324 |
if (item) {
|
|
|
2325 |
i = item[0];
|
|
|
2326 |
j = item[1];
|
|
|
2327 |
ps = series[i].datapoints.pointsize;
|
|
|
2328 |
|
|
|
2329 |
return { datapoint: series[i].datapoints.points.slice(j * ps, (j + 1) * ps),
|
|
|
2330 |
dataIndex: j,
|
|
|
2331 |
series: series[i],
|
|
|
2332 |
seriesIndex: i };
|
|
|
2333 |
}
|
|
|
2334 |
|
|
|
2335 |
return null;
|
|
|
2336 |
}
|
|
|
2337 |
|
|
|
2338 |
function onMouseMove(e) {
|
|
|
2339 |
if (options.grid.hoverable)
|
|
|
2340 |
triggerClickHoverEvent("plothover", e,
|
|
|
2341 |
function (s) { return s["hoverable"] != false; });
|
|
|
2342 |
}
|
|
|
2343 |
|
|
|
2344 |
function onMouseLeave(e) {
|
|
|
2345 |
if (options.grid.hoverable)
|
|
|
2346 |
triggerClickHoverEvent("plothover", e,
|
|
|
2347 |
function (s) { return false; });
|
|
|
2348 |
}
|
|
|
2349 |
|
|
|
2350 |
function onClick(e) {
|
|
|
2351 |
triggerClickHoverEvent("plotclick", e,
|
|
|
2352 |
function (s) { return s["clickable"] != false; });
|
|
|
2353 |
}
|
|
|
2354 |
|
|
|
2355 |
// trigger click or hover event (they send the same parameters
|
|
|
2356 |
// so we share their code)
|
|
|
2357 |
function triggerClickHoverEvent(eventname, event, seriesFilter) {
|
|
|
2358 |
var offset = eventHolder.offset(),
|
|
|
2359 |
canvasX = event.pageX - offset.left - plotOffset.left,
|
|
|
2360 |
canvasY = event.pageY - offset.top - plotOffset.top,
|
|
|
2361 |
pos = canvasToAxisCoords({ left: canvasX, top: canvasY });
|
|
|
2362 |
|
|
|
2363 |
pos.pageX = event.pageX;
|
|
|
2364 |
pos.pageY = event.pageY;
|
|
|
2365 |
|
|
|
2366 |
var item = findNearbyItem(canvasX, canvasY, seriesFilter);
|
|
|
2367 |
|
|
|
2368 |
if (item) {
|
|
|
2369 |
// fill in mouse pos for any listeners out there
|
|
|
2370 |
item.pageX = parseInt(item.series.xaxis.p2c(item.datapoint[0]) + offset.left + plotOffset.left);
|
|
|
2371 |
item.pageY = parseInt(item.series.yaxis.p2c(item.datapoint[1]) + offset.top + plotOffset.top);
|
|
|
2372 |
}
|
|
|
2373 |
|
|
|
2374 |
if (options.grid.autoHighlight) {
|
|
|
2375 |
// clear auto-highlights
|
|
|
2376 |
for (var i = 0; i < highlights.length; ++i) {
|
|
|
2377 |
var h = highlights[i];
|
|
|
2378 |
if (h.auto == eventname &&
|
|
|
2379 |
!(item && h.series == item.series &&
|
|
|
2380 |
h.point[0] == item.datapoint[0] &&
|
|
|
2381 |
h.point[1] == item.datapoint[1]))
|
|
|
2382 |
unhighlight(h.series, h.point);
|
|
|
2383 |
}
|
|
|
2384 |
|
|
|
2385 |
if (item)
|
|
|
2386 |
highlight(item.series, item.datapoint, eventname);
|
|
|
2387 |
}
|
|
|
2388 |
|
|
|
2389 |
placeholder.trigger(eventname, [ pos, item ]);
|
|
|
2390 |
}
|
|
|
2391 |
|
|
|
2392 |
function triggerRedrawOverlay() {
|
|
|
2393 |
if (!redrawTimeout)
|
|
|
2394 |
redrawTimeout = setTimeout(drawOverlay, 30);
|
|
|
2395 |
}
|
|
|
2396 |
|
|
|
2397 |
function drawOverlay() {
|
|
|
2398 |
redrawTimeout = null;
|
|
|
2399 |
|
|
|
2400 |
// draw highlights
|
|
|
2401 |
octx.save();
|
|
|
2402 |
octx.clearRect(0, 0, canvasWidth, canvasHeight);
|
|
|
2403 |
octx.translate(plotOffset.left, plotOffset.top);
|
|
|
2404 |
|
|
|
2405 |
var i, hi;
|
|
|
2406 |
for (i = 0; i < highlights.length; ++i) {
|
|
|
2407 |
hi = highlights[i];
|
|
|
2408 |
|
|
|
2409 |
if (hi.series.bars.show)
|
|
|
2410 |
drawBarHighlight(hi.series, hi.point);
|
|
|
2411 |
else
|
|
|
2412 |
drawPointHighlight(hi.series, hi.point);
|
|
|
2413 |
}
|
|
|
2414 |
octx.restore();
|
|
|
2415 |
|
|
|
2416 |
executeHooks(hooks.drawOverlay, [octx]);
|
|
|
2417 |
}
|
|
|
2418 |
|
|
|
2419 |
function highlight(s, point, auto) {
|
|
|
2420 |
if (typeof s == "number")
|
|
|
2421 |
s = series[s];
|
|
|
2422 |
|
|
|
2423 |
if (typeof point == "number") {
|
|
|
2424 |
var ps = s.datapoints.pointsize;
|
|
|
2425 |
point = s.datapoints.points.slice(ps * point, ps * (point + 1));
|
|
|
2426 |
}
|
|
|
2427 |
|
|
|
2428 |
var i = indexOfHighlight(s, point);
|
|
|
2429 |
if (i == -1) {
|
|
|
2430 |
highlights.push({ series: s, point: point, auto: auto });
|
|
|
2431 |
|
|
|
2432 |
triggerRedrawOverlay();
|
|
|
2433 |
}
|
|
|
2434 |
else if (!auto)
|
|
|
2435 |
highlights[i].auto = false;
|
|
|
2436 |
}
|
|
|
2437 |
|
|
|
2438 |
function unhighlight(s, point) {
|
|
|
2439 |
if (s == null && point == null) {
|
|
|
2440 |
highlights = [];
|
|
|
2441 |
triggerRedrawOverlay();
|
|
|
2442 |
}
|
|
|
2443 |
|
|
|
2444 |
if (typeof s == "number")
|
|
|
2445 |
s = series[s];
|
|
|
2446 |
|
|
|
2447 |
if (typeof point == "number")
|
|
|
2448 |
point = s.data[point];
|
|
|
2449 |
|
|
|
2450 |
var i = indexOfHighlight(s, point);
|
|
|
2451 |
if (i != -1) {
|
|
|
2452 |
highlights.splice(i, 1);
|
|
|
2453 |
|
|
|
2454 |
triggerRedrawOverlay();
|
|
|
2455 |
}
|
|
|
2456 |
}
|
|
|
2457 |
|
|
|
2458 |
function indexOfHighlight(s, p) {
|
|
|
2459 |
for (var i = 0; i < highlights.length; ++i) {
|
|
|
2460 |
var h = highlights[i];
|
|
|
2461 |
if (h.series == s && h.point[0] == p[0]
|
|
|
2462 |
&& h.point[1] == p[1])
|
|
|
2463 |
return i;
|
|
|
2464 |
}
|
|
|
2465 |
return -1;
|
|
|
2466 |
}
|
|
|
2467 |
|
|
|
2468 |
function drawPointHighlight(series, point) {
|
|
|
2469 |
var x = point[0], y = point[1],
|
|
|
2470 |
axisx = series.xaxis, axisy = series.yaxis;
|
|
|
2471 |
|
|
|
2472 |
if (x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max)
|
|
|
2473 |
return;
|
|
|
2474 |
|
|
|
2475 |
var pointRadius = series.points.radius + series.points.lineWidth / 2;
|
|
|
2476 |
octx.lineWidth = pointRadius;
|
|
|
2477 |
octx.strokeStyle = $.color.parse(series.color).scale('a', 0.5).toString();
|
|
|
2478 |
var radius = 1.5 * pointRadius,
|
|
|
2479 |
x = axisx.p2c(x),
|
|
|
2480 |
y = axisy.p2c(y);
|
|
|
2481 |
|
|
|
2482 |
octx.beginPath();
|
|
|
2483 |
if (series.points.symbol == "circle")
|
|
|
2484 |
octx.arc(x, y, radius, 0, 2 * Math.PI, false);
|
|
|
2485 |
else
|
|
|
2486 |
series.points.symbol(octx, x, y, radius, false);
|
|
|
2487 |
octx.closePath();
|
|
|
2488 |
octx.stroke();
|
|
|
2489 |
}
|
|
|
2490 |
|
|
|
2491 |
function drawBarHighlight(series, point) {
|
|
|
2492 |
octx.lineWidth = series.bars.lineWidth;
|
|
|
2493 |
octx.strokeStyle = $.color.parse(series.color).scale('a', 0.5).toString();
|
|
|
2494 |
var fillStyle = $.color.parse(series.color).scale('a', 0.5).toString();
|
|
|
2495 |
var barLeft = series.bars.align == "left" ? 0 : -series.bars.barWidth/2;
|
|
|
2496 |
drawBar(point[0], point[1], point[2] || 0, barLeft, barLeft + series.bars.barWidth,
|
|
|
2497 |
0, function () { return fillStyle; }, series.xaxis, series.yaxis, octx, series.bars.horizontal, series.bars.lineWidth);
|
|
|
2498 |
}
|
|
|
2499 |
|
|
|
2500 |
function getColorOrGradient(spec, bottom, top, defaultColor) {
|
|
|
2501 |
if (typeof spec == "string")
|
|
|
2502 |
return spec;
|
|
|
2503 |
else {
|
|
|
2504 |
// assume this is a gradient spec; IE currently only
|
|
|
2505 |
// supports a simple vertical gradient properly, so that's
|
|
|
2506 |
// what we support too
|
|
|
2507 |
var gradient = ctx.createLinearGradient(0, top, 0, bottom);
|
|
|
2508 |
|
|
|
2509 |
for (var i = 0, l = spec.colors.length; i < l; ++i) {
|
|
|
2510 |
var c = spec.colors[i];
|
|
|
2511 |
if (typeof c != "string") {
|
|
|
2512 |
var co = $.color.parse(defaultColor);
|
|
|
2513 |
if (c.brightness != null)
|
|
|
2514 |
co = co.scale('rgb', c.brightness)
|
|
|
2515 |
if (c.opacity != null)
|
|
|
2516 |
co.a *= c.opacity;
|
|
|
2517 |
c = co.toString();
|
|
|
2518 |
}
|
|
|
2519 |
gradient.addColorStop(i / (l - 1), c);
|
|
|
2520 |
}
|
|
|
2521 |
|
|
|
2522 |
return gradient;
|
|
|
2523 |
}
|
|
|
2524 |
}
|
|
|
2525 |
}
|
|
|
2526 |
|
|
|
2527 |
$.plot = function(placeholder, data, options) {
|
|
|
2528 |
//var t0 = new Date();
|
|
|
2529 |
var plot = new Plot($(placeholder), data, options, $.plot.plugins);
|
|
|
2530 |
//(window.console ? console.log : alert)("time used (msecs): " + ((new Date()).getTime() - t0.getTime()));
|
|
|
2531 |
return plot;
|
|
|
2532 |
};
|
|
|
2533 |
|
|
|
2534 |
$.plot.version = "0.7";
|
|
|
2535 |
|
|
|
2536 |
$.plot.plugins = [];
|
|
|
2537 |
|
|
|
2538 |
// returns a string with the date d formatted according to fmt
|
|
|
2539 |
$.plot.formatDate = function(d, fmt, monthNames) {
|
|
|
2540 |
var leftPad = function(n) {
|
|
|
2541 |
n = "" + n;
|
|
|
2542 |
return n.length == 1 ? "0" + n : n;
|
|
|
2543 |
};
|
|
|
2544 |
|
|
|
2545 |
var r = [];
|
|
|
2546 |
var escape = false, padNext = false;
|
|
|
2547 |
var hours = d.getUTCHours();
|
|
|
2548 |
var isAM = hours < 12;
|
|
|
2549 |
if (monthNames == null)
|
|
|
2550 |
monthNames = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
|
|
|
2551 |
|
|
|
2552 |
if (fmt.search(/%p|%P/) != -1) {
|
|
|
2553 |
if (hours > 12) {
|
|
|
2554 |
hours = hours - 12;
|
|
|
2555 |
} else if (hours == 0) {
|
|
|
2556 |
hours = 12;
|
|
|
2557 |
}
|
|
|
2558 |
}
|
|
|
2559 |
for (var i = 0; i < fmt.length; ++i) {
|
|
|
2560 |
var c = fmt.charAt(i);
|
|
|
2561 |
|
|
|
2562 |
if (escape) {
|
|
|
2563 |
switch (c) {
|
|
|
2564 |
case 'h': c = "" + hours; break;
|
|
|
2565 |
case 'H': c = leftPad(hours); break;
|
|
|
2566 |
case 'M': c = leftPad(d.getUTCMinutes()); break;
|
|
|
2567 |
case 'S': c = leftPad(d.getUTCSeconds()); break;
|
|
|
2568 |
case 'd': c = "" + d.getUTCDate(); break;
|
|
|
2569 |
case 'm': c = "" + (d.getUTCMonth() + 1); break;
|
|
|
2570 |
case 'y': c = "" + d.getUTCFullYear(); break;
|
|
|
2571 |
case 'b': c = "" + monthNames[d.getUTCMonth()]; break;
|
|
|
2572 |
case 'p': c = (isAM) ? ("" + "am") : ("" + "pm"); break;
|
|
|
2573 |
case 'P': c = (isAM) ? ("" + "AM") : ("" + "PM"); break;
|
|
|
2574 |
case '0': c = ""; padNext = true; break;
|
|
|
2575 |
}
|
|
|
2576 |
if (c && padNext) {
|
|
|
2577 |
c = leftPad(c);
|
|
|
2578 |
padNext = false;
|
|
|
2579 |
}
|
|
|
2580 |
r.push(c);
|
|
|
2581 |
if (!padNext)
|
|
|
2582 |
escape = false;
|
|
|
2583 |
}
|
|
|
2584 |
else {
|
|
|
2585 |
if (c == "%")
|
|
|
2586 |
escape = true;
|
|
|
2587 |
else
|
|
|
2588 |
r.push(c);
|
|
|
2589 |
}
|
|
|
2590 |
}
|
|
|
2591 |
return r.join("");
|
|
|
2592 |
};
|
|
|
2593 |
|
|
|
2594 |
// round to nearby lower multiple of base
|
|
|
2595 |
function floorInBase(n, base) {
|
|
|
2596 |
return base * Math.floor(n / base);
|
|
|
2597 |
}
|
|
|
2598 |
|
|
|
2599 |
})(jQuery);
|