1 | /*! Javascript plotting library for jQuery, v. 0.7. |
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2 | * |
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3 | * Released under the MIT license by IOLA, December 2007. |
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4 | * |
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5 | */ |
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6 | |
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7 | // first an inline dependency, jquery.colorhelpers.js, we inline it here |
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8 | // for convenience |
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9 | |
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10 | /* Plugin for jQuery for working with colors. |
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11 | * |
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12 | * Version 1.1. |
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13 | * |
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14 | * Inspiration from jQuery color animation plugin by John Resig. |
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15 | * |
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16 | * Released under the MIT license by Ole Laursen, October 2009. |
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17 | * |
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18 | * Examples: |
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19 | * |
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20 | * $.color.parse("#fff").scale('rgb', 0.25).add('a', -0.5).toString() |
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21 | * var c = $.color.extract($("#mydiv"), 'background-color'); |
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22 | * console.log(c.r, c.g, c.b, c.a); |
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23 | * $.color.make(100, 50, 25, 0.4).toString() // returns "rgba(100,50,25,0.4)" |
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24 | * |
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25 | * Note that .scale() and .add() return the same modified object |
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26 | * instead of making a new one. |
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27 | * |
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28 | * V. 1.1: Fix error handling so e.g. parsing an empty string does |
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29 | * produce a color rather than just crashing. |
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30 | */ |
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31 | (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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32 | |
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33 | // the actual Flot code |
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34 | (function($) { |
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35 | function Plot(placeholder, data_, options_, plugins) { |
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36 | // data is on the form: |
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37 | // [ series1, series2 ... ] |
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38 | // where series is either just the data as [ [x1, y1], [x2, y2], ... ] |
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39 | // or { data: [ [x1, y1], [x2, y2], ... ], label: "some label", ... } |
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40 | |
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41 | var series = [], |
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42 | options = { |
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43 | // the color theme used for graphs |
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44 | colors: ["#edc240", "#afd8f8", "#cb4b4b", "#4da74d", "#9440ed"], |
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45 | legend: { |
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46 | show: true, |
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47 | noColumns: 1, // number of colums in legend table |
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48 | labelFormatter: null, // fn: string -> string |
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49 | labelBoxBorderColor: "#ccc", // border color for the little label boxes |
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50 | container: null, // container (as jQuery object) to put legend in, null means default on top of graph |
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51 | position: "ne", // position of default legend container within plot |
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52 | margin: 5, // distance from grid edge to default legend container within plot |
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53 | backgroundColor: null, // null means auto-detect |
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54 | backgroundOpacity: 0.85 // set to 0 to avoid background |
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55 | }, |
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56 | xaxis: { |
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57 | show: null, // null = auto-detect, true = always, false = never |
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58 | position: "bottom", // or "top" |
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59 | mode: null, // null or "time" |
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60 | color: null, // base color, labels, ticks |
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61 | tickColor: null, // possibly different color of ticks, e.g. "rgba(0,0,0,0.15)" |
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62 | transform: null, // null or f: number -> number to transform axis |
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63 | inverseTransform: null, // if transform is set, this should be the inverse function |
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64 | min: null, // min. value to show, null means set automatically |
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65 | max: null, // max. value to show, null means set automatically |
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66 | autoscaleMargin: null, // margin in % to add if auto-setting min/max |
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67 | 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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68 | tickFormatter: null, // fn: number -> string |
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69 | labelWidth: null, // size of tick labels in pixels |
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70 | labelHeight: null, |
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71 | reserveSpace: null, // whether to reserve space even if axis isn't shown |
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72 | tickLength: null, // size in pixels of ticks, or "full" for whole line |
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73 | alignTicksWithAxis: null, // axis number or null for no sync |
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74 | |
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75 | // mode specific options |
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76 | tickDecimals: null, // no. of decimals, null means auto |
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77 | tickSize: null, // number or [number, "unit"] |
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78 | minTickSize: null, // number or [number, "unit"] |
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79 | monthNames: null, // list of names of months |
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80 | timeformat: null, // format string to use |
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81 | twelveHourClock: false // 12 or 24 time in time mode |
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82 | }, |
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83 | yaxis: { |
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84 | autoscaleMargin: 0.02, |
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85 | position: "left" // or "right" |
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86 | }, |
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87 | xaxes: [], |
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88 | yaxes: [], |
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89 | series: { |
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90 | points: { |
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91 | show: false, |
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92 | radius: 3, |
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93 | lineWidth: 2, // in pixels |
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94 | fill: true, |
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95 | fillColor: "#ffffff", |
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96 | symbol: "circle" // or callback |
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97 | }, |
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98 | lines: { |
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99 | // we don't put in show: false so we can see |
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100 | // whether lines were actively disabled |
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101 | lineWidth: 2, // in pixels |
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102 | fill: false, |
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103 | fillColor: null, |
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104 | steps: false |
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105 | }, |
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106 | bars: { |
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107 | show: false, |
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108 | lineWidth: 2, // in pixels |
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109 | barWidth: 1, // in units of the x axis |
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110 | fill: true, |
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111 | fillColor: null, |
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112 | align: "left", // or "center" |
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113 | horizontal: false |
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114 | }, |
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115 | shadowSize: 3 |
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116 | }, |
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117 | grid: { |
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118 | show: true, |
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119 | aboveData: false, |
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120 | color: "#545454", // primary color used for outline and labels |
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121 | backgroundColor: null, // null for transparent, else color |
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122 | borderColor: null, // set if different from the grid color |
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123 | tickColor: null, // color for the ticks, e.g. "rgba(0,0,0,0.15)" |
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124 | labelMargin: 5, // in pixels |
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125 | axisMargin: 8, // in pixels |
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126 | borderWidth: 2, // in pixels |
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127 | minBorderMargin: null, // in pixels, null means taken from points radius |
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128 | markings: null, // array of ranges or fn: axes -> array of ranges |
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129 | markingsColor: "#f4f4f4", |
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130 | markingsLineWidth: 2, |
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131 | // interactive stuff |
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132 | clickable: false, |
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133 | hoverable: false, |
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134 | autoHighlight: true, // highlight in case mouse is near |
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135 | mouseActiveRadius: 10 // how far the mouse can be away to activate an item |
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136 | }, |
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137 | hooks: {} |
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138 | }, |
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139 | canvas = null, // the canvas for the plot itself |
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140 | overlay = null, // canvas for interactive stuff on top of plot |
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141 | eventHolder = null, // jQuery object that events should be bound to |
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142 | ctx = null, octx = null, |
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143 | xaxes = [], yaxes = [], |
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144 | plotOffset = { left: 0, right: 0, top: 0, bottom: 0}, |
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145 | canvasWidth = 0, canvasHeight = 0, |
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146 | plotWidth = 0, plotHeight = 0, |
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147 | hooks = { |
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148 | processOptions: [], |
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149 | processRawData: [], |
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150 | processDatapoints: [], |
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151 | drawSeries: [], |
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152 | draw: [], |
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153 | bindEvents: [], |
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154 | drawOverlay: [], |
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155 | shutdown: [] |
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156 | }, |
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157 | plot = this; |
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158 | |
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159 | // public functions |
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160 | plot.setData = setData; |
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161 | plot.setupGrid = setupGrid; |
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162 | plot.draw = draw; |
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163 | plot.getPlaceholder = function() { return placeholder; }; |
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164 | plot.getCanvas = function() { return canvas; }; |
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165 | plot.getPlotOffset = function() { return plotOffset; }; |
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166 | plot.width = function () { return plotWidth; }; |
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167 | plot.height = function () { return plotHeight; }; |
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168 | plot.offset = function () { |
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169 | var o = eventHolder.offset(); |
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170 | o.left += plotOffset.left; |
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171 | o.top += plotOffset.top; |
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172 | return o; |
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173 | }; |
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174 | plot.getData = function () { return series; }; |
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175 | plot.getAxes = function () { |
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176 | var res = {}, i; |
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177 | $.each(xaxes.concat(yaxes), function (_, axis) { |
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178 | if (axis) |
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179 | res[axis.direction + (axis.n != 1 ? axis.n : "") + "axis"] = axis; |
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180 | }); |
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181 | return res; |
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182 | }; |
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183 | plot.getXAxes = function () { return xaxes; }; |
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184 | plot.getYAxes = function () { return yaxes; }; |
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185 | plot.c2p = canvasToAxisCoords; |
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186 | plot.p2c = axisToCanvasCoords; |
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187 | plot.getOptions = function () { return options; }; |
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188 | plot.highlight = highlight; |
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189 | plot.unhighlight = unhighlight; |
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190 | plot.triggerRedrawOverlay = triggerRedrawOverlay; |
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191 | plot.pointOffset = function(point) { |
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192 | return { |
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193 | left: parseInt(xaxes[axisNumber(point, "x") - 1].p2c(+point.x) + plotOffset.left), |
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194 | top: parseInt(yaxes[axisNumber(point, "y") - 1].p2c(+point.y) + plotOffset.top) |
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195 | }; |
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196 | }; |
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197 | plot.shutdown = shutdown; |
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198 | plot.resize = function () { |
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199 | getCanvasDimensions(); |
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200 | resizeCanvas(canvas); |
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201 | resizeCanvas(overlay); |
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202 | }; |
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203 | |
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204 | // public attributes |
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205 | plot.hooks = hooks; |
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206 | |
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207 | // initialize |
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208 | initPlugins(plot); |
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209 | parseOptions(options_); |
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210 | setupCanvases(); |
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211 | setData(data_); |
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212 | setupGrid(); |
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213 | draw(); |
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214 | bindEvents(); |
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215 | |
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216 | |
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217 | function executeHooks(hook, args) { |
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218 | args = [plot].concat(args); |
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219 | for (var i = 0; i < hook.length; ++i) |
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220 | hook[i].apply(this, args); |
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221 | } |
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222 | |
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223 | function initPlugins() { |
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224 | for (var i = 0; i < plugins.length; ++i) { |
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225 | var p = plugins[i]; |
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226 | p.init(plot); |
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227 | if (p.options) |
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228 | $.extend(true, options, p.options); |
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229 | } |
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230 | } |
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231 | |
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232 | function parseOptions(opts) { |
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233 | var i; |
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234 | |
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235 | $.extend(true, options, opts); |
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236 | |
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237 | if (options.xaxis.color == null) |
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238 | options.xaxis.color = options.grid.color; |
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239 | if (options.yaxis.color == null) |
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240 | options.yaxis.color = options.grid.color; |
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241 | |
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242 | if (options.xaxis.tickColor == null) // backwards-compatibility |
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243 | options.xaxis.tickColor = options.grid.tickColor; |
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244 | if (options.yaxis.tickColor == null) // backwards-compatibility |
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245 | options.yaxis.tickColor = options.grid.tickColor; |
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246 | |
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247 | if (options.grid.borderColor == null) |
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248 | options.grid.borderColor = options.grid.color; |
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249 | if (options.grid.tickColor == null) |
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250 | options.grid.tickColor = $.color.parse(options.grid.color).scale('a', 0.22).toString(); |
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251 | |
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252 | // fill in defaults in axes, copy at least always the |
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253 | // first as the rest of the code assumes it'll be there |
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254 | for (i = 0; i < Math.max(1, options.xaxes.length); ++i) |
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255 | options.xaxes[i] = $.extend(true, {}, options.xaxis, options.xaxes[i]); |
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256 | for (i = 0; i < Math.max(1, options.yaxes.length); ++i) |
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257 | options.yaxes[i] = $.extend(true, {}, options.yaxis, options.yaxes[i]); |
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258 | |
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259 | // backwards compatibility, to be removed in future |
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260 | if (options.xaxis.noTicks && options.xaxis.ticks == null) |
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261 | options.xaxis.ticks = options.xaxis.noTicks; |
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262 | if (options.yaxis.noTicks && options.yaxis.ticks == null) |
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263 | options.yaxis.ticks = options.yaxis.noTicks; |
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264 | if (options.x2axis) { |
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265 | options.xaxes[1] = $.extend(true, {}, options.xaxis, options.x2axis); |
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266 | options.xaxes[1].position = "top"; |
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267 | } |
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268 | if (options.y2axis) { |
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269 | options.yaxes[1] = $.extend(true, {}, options.yaxis, options.y2axis); |
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270 | options.yaxes[1].position = "right"; |
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271 | } |
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272 | if (options.grid.coloredAreas) |
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273 | options.grid.markings = options.grid.coloredAreas; |
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274 | if (options.grid.coloredAreasColor) |
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275 | options.grid.markingsColor = options.grid.coloredAreasColor; |
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276 | if (options.lines) |
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277 | $.extend(true, options.series.lines, options.lines); |
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278 | if (options.points) |
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279 | $.extend(true, options.series.points, options.points); |
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280 | if (options.bars) |
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281 | $.extend(true, options.series.bars, options.bars); |
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282 | if (options.shadowSize != null) |
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283 | options.series.shadowSize = options.shadowSize; |
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284 | |
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285 | // save options on axes for future reference |
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286 | for (i = 0; i < options.xaxes.length; ++i) |
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287 | getOrCreateAxis(xaxes, i + 1).options = options.xaxes[i]; |
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288 | for (i = 0; i < options.yaxes.length; ++i) |
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289 | getOrCreateAxis(yaxes, i + 1).options = options.yaxes[i]; |
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290 | |
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291 | // add hooks from options |
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292 | for (var n in hooks) |
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293 | if (options.hooks[n] && options.hooks[n].length) |
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294 | hooks[n] = hooks[n].concat(options.hooks[n]); |
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295 | |
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296 | executeHooks(hooks.processOptions, [options]); |
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297 | } |
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298 | |
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299 | function setData(d) { |
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300 | series = parseData(d); |
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301 | fillInSeriesOptions(); |
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302 | processData(); |
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303 | } |
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304 | |
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305 | function parseData(d) { |
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306 | var res = []; |
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307 | for (var i = 0; i < d.length; ++i) { |
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308 | var s = $.extend(true, {}, options.series); |
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309 | |
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310 | if (d[i].data != null) { |
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311 | s.data = d[i].data; // move the data instead of deep-copy |
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312 | delete d[i].data; |
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313 | |
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314 | $.extend(true, s, d[i]); |
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315 | |
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316 | d[i].data = s.data; |
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317 | } |
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318 | else |
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319 | s.data = d[i]; |
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320 | res.push(s); |
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321 | } |
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322 | |
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323 | return res; |
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324 | } |
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325 | |
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326 | function axisNumber(obj, coord) { |
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327 | var a = obj[coord + "axis"]; |
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328 | if (typeof a == "object") // if we got a real axis, extract number |
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329 | a = a.n; |
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330 | if (typeof a != "number") |
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331 | a = 1; // default to first axis |
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332 | return a; |
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333 | } |
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334 | |
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335 | function allAxes() { |
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336 | // return flat array without annoying null entries |
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337 | return $.grep(xaxes.concat(yaxes), function (a) { return a; }); |
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338 | } |
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339 | |
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340 | function canvasToAxisCoords(pos) { |
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341 | // return an object with x/y corresponding to all used axes |
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342 | var res = {}, i, axis; |
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343 | for (i = 0; i < xaxes.length; ++i) { |
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344 | axis = xaxes[i]; |
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345 | if (axis && axis.used) |
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346 | res["x" + axis.n] = axis.c2p(pos.left); |
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347 | } |
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348 | |
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349 | for (i = 0; i < yaxes.length; ++i) { |
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350 | axis = yaxes[i]; |
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351 | if (axis && axis.used) |
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352 | res["y" + axis.n] = axis.c2p(pos.top); |
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353 | } |
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354 | |
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355 | if (res.x1 !== undefined) |
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356 | res.x = res.x1; |
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357 | if (res.y1 !== undefined) |
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358 | res.y = res.y1; |
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359 | |
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360 | return res; |
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361 | } |
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362 | |
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363 | function axisToCanvasCoords(pos) { |
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364 | // get canvas coords from the first pair of x/y found in pos |
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365 | var res = {}, i, axis, key; |
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366 | |
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367 | for (i = 0; i < xaxes.length; ++i) { |
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368 | axis = xaxes[i]; |
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369 | if (axis && axis.used) { |
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370 | key = "x" + axis.n; |
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371 | if (pos[key] == null && axis.n == 1) |
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372 | key = "x"; |
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373 | |
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374 | if (pos[key] != null) { |
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375 | res.left = axis.p2c(pos[key]); |
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376 | break; |
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377 | } |
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378 | } |
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379 | } |
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380 | |
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381 | for (i = 0; i < yaxes.length; ++i) { |
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382 | axis = yaxes[i]; |
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383 | if (axis && axis.used) { |
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384 | key = "y" + axis.n; |
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385 | if (pos[key] == null && axis.n == 1) |
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386 | key = "y"; |
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387 | |
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388 | if (pos[key] != null) { |
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389 | res.top = axis.p2c(pos[key]); |
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390 | break; |
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391 | } |
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392 | } |
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393 | } |
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394 | |
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395 | return res; |
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396 | } |
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397 | |
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398 | function getOrCreateAxis(axes, number) { |
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399 | if (!axes[number - 1]) |
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400 | axes[number - 1] = { |
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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); |
---|