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0
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1 /* Javascript plotting library for jQuery, version 0.8.3-alpha.
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2
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3 Copyright (c) 2007-2013 IOLA and Ole Laursen.
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4 Licensed under the MIT license.
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5
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6 */
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7
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8 // first an inline dependency, jquery.colorhelpers.js, we inline it here
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9 // for convenience
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10
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11 /* Plugin for jQuery for working with colors.
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12 *
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13 * Version 1.1.
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14 *
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15 * Inspiration from jQuery color animation plugin by John Resig.
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16 *
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17 * Released under the MIT license by Ole Laursen, October 2009.
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18 *
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19 * Examples:
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20 *
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21 * $.color.parse("#fff").scale('rgb', 0.25).add('a', -0.5).toString()
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22 * var c = $.color.extract($("#mydiv"), 'background-color');
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23 * console.log(c.r, c.g, c.b, c.a);
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24 * $.color.make(100, 50, 25, 0.4).toString() // returns "rgba(100,50,25,0.4)"
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25 *
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26 * Note that .scale() and .add() return the same modified object
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27 * instead of making a new one.
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28 *
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29 * V. 1.1: Fix error handling so e.g. parsing an empty string does
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30 * produce a color rather than just crashing.
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31 */
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32 (function($){$.color={};$.color.make=function(r,g,b,a){var o={};o.r=r||0;o.g=g||0;o.b=b||0;o.a=a!=null?a:1;o.add=function(c,d){for(var i=0;i<c.length;++i)o[c.charAt(i)]+=d;return o.normalize()};o.scale=function(c,f){for(var i=0;i<c.length;++i)o[c.charAt(i)]*=f;return o.normalize()};o.toString=function(){if(o.a>=1){return"rgb("+[o.r,o.g,o.b].join(",")+")"}else{return"rgba("+[o.r,o.g,o.b,o.a].join(",")+")"}};o.normalize=function(){function clamp(min,value,max){return value<min?min:value>max?max:value}o.r=clamp(0,parseInt(o.r),255);o.g=clamp(0,parseInt(o.g),255);o.b=clamp(0,parseInt(o.b),255);o.a=clamp(0,o.a,1);return o};o.clone=function(){return $.color.make(o.r,o.b,o.g,o.a)};return o.normalize()};$.color.extract=function(elem,css){var c;do{c=elem.css(css).toLowerCase();if(c!=""&&c!="transparent")break;elem=elem.parent()}while(elem.length&&!$.nodeName(elem.get(0),"body"));if(c=="rgba(0, 0, 0, 0)")c="transparent";return $.color.parse(c)};$.color.parse=function(str){var res,m=$.color.make;if(res=/rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(str))return m(parseInt(res[1],10),parseInt(res[2],10),parseInt(res[3],10));if(res=/rgba\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(str))return m(parseInt(res[1],10),parseInt(res[2],10),parseInt(res[3],10),parseFloat(res[4]));if(res=/rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(str))return m(parseFloat(res[1])*2.55,parseFloat(res[2])*2.55,parseFloat(res[3])*2.55);if(res=/rgba\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(str))return m(parseFloat(res[1])*2.55,parseFloat(res[2])*2.55,parseFloat(res[3])*2.55,parseFloat(res[4]));if(res=/#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(str))return m(parseInt(res[1],16),parseInt(res[2],16),parseInt(res[3],16));if(res=/#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(str))return m(parseInt(res[1]+res[1],16),parseInt(res[2]+res[2],16),parseInt(res[3]+res[3],16));var name=$.trim(str).toLowerCase();if(name=="transparent")return m(255,255,255,0);else{res=lookupColors[name]||[0,0,0];return m(res[0],res[1],res[2])}};var lookupColors={aqua:[0,255,255],azure:[240,255,255],beige:[245,245,220],black:[0,0,0],blue:[0,0,255],brown:[165,42,42],cyan:[0,255,255],darkblue:[0,0,139],darkcyan:[0,139,139],darkgrey:[169,169,169],darkgreen:[0,100,0],darkkhaki:[189,183,107],darkmagenta:[139,0,139],darkolivegreen:[85,107,47],darkorange:[255,140,0],darkorchid:[153,50,204],darkred:[139,0,0],darksalmon:[233,150,122],darkviolet:[148,0,211],fuchsia:[255,0,255],gold:[255,215,0],green:[0,128,0],indigo:[75,0,130],khaki:[240,230,140],lightblue:[173,216,230],lightcyan:[224,255,255],lightgreen:[144,238,144],lightgrey:[211,211,211],lightpink:[255,182,193],lightyellow:[255,255,224],lime:[0,255,0],magenta:[255,0,255],maroon:[128,0,0],navy:[0,0,128],olive:[128,128,0],orange:[255,165,0],pink:[255,192,203],purple:[128,0,128],violet:[128,0,128],red:[255,0,0],silver:[192,192,192],white:[255,255,255],yellow:[255,255,0]}})(jQuery);
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33
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34 // the actual Flot code
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35 (function($) {
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36
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37 // Cache the prototype hasOwnProperty for faster access
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38
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39 var hasOwnProperty = Object.prototype.hasOwnProperty;
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40
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41 ///////////////////////////////////////////////////////////////////////////
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42 // The Canvas object is a wrapper around an HTML5 <canvas> tag.
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43 //
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44 // @constructor
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45 // @param {string} cls List of classes to apply to the canvas.
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46 // @param {element} container Element onto which to append the canvas.
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47 //
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48 // Requiring a container is a little iffy, but unfortunately canvas
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49 // operations don't work unless the canvas is attached to the DOM.
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50
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51 function Canvas(cls, container) {
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52
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53 var element = container.children("." + cls)[0];
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54
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55 if (element == null) {
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56
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57 element = document.createElement("canvas");
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58 element.className = cls;
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59
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60 $(element).css({ direction: "ltr", position: "absolute", left: 0, top: 0 })
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61 .appendTo(container);
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62
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63 // If HTML5 Canvas isn't available, fall back to [Ex|Flash]canvas
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64
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65 if (!element.getContext) {
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66 if (window.G_vmlCanvasManager) {
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67 element = window.G_vmlCanvasManager.initElement(element);
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68 } else {
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69 throw new Error("Canvas is not available. If you're using IE with a fall-back such as Excanvas, then there's either a mistake in your conditional include, or the page has no DOCTYPE and is rendering in Quirks Mode.");
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70 }
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71 }
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72 }
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73
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74 this.element = element;
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75
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76 var context = this.context = element.getContext("2d");
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77
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78 // Determine the screen's ratio of physical to device-independent
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79 // pixels. This is the ratio between the canvas width that the browser
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80 // advertises and the number of pixels actually present in that space.
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81
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82 // The iPhone 4, for example, has a device-independent width of 320px,
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83 // but its screen is actually 640px wide. It therefore has a pixel
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84 // ratio of 2, while most normal devices have a ratio of 1.
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85
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86 var devicePixelRatio = window.devicePixelRatio || 1,
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87 backingStoreRatio =
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88 context.webkitBackingStorePixelRatio ||
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89 context.mozBackingStorePixelRatio ||
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90 context.msBackingStorePixelRatio ||
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91 context.oBackingStorePixelRatio ||
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92 context.backingStorePixelRatio || 1;
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93
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94 this.pixelRatio = devicePixelRatio / backingStoreRatio;
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95
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96 // Size the canvas to match the internal dimensions of its container
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97
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98 this.resize(container.width(), container.height());
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99
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100 // Collection of HTML div layers for text overlaid onto the canvas
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101
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102 this.textContainer = null;
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103 this.text = {};
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104
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105 // Cache of text fragments and metrics, so we can avoid expensively
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106 // re-calculating them when the plot is re-rendered in a loop.
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107
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108 this._textCache = {};
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109 }
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110
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111 // Resizes the canvas to the given dimensions.
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112 //
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113 // @param {number} width New width of the canvas, in pixels.
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114 // @param {number} width New height of the canvas, in pixels.
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115
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116 Canvas.prototype.resize = function(width, height) {
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117
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118 if (width <= 0 || height <= 0) {
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119 throw new Error("Invalid dimensions for plot, width = " + width + ", height = " + height);
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120 }
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121
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122 var element = this.element,
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123 context = this.context,
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124 pixelRatio = this.pixelRatio;
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125
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126 // Resize the canvas, increasing its density based on the display's
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127 // pixel ratio; basically giving it more pixels without increasing the
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128 // size of its element, to take advantage of the fact that retina
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129 // displays have that many more pixels in the same advertised space.
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130
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131 // Resizing should reset the state (excanvas seems to be buggy though)
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132
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133 if (this.width != width) {
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134 element.width = width * pixelRatio;
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135 element.style.width = width + "px";
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136 this.width = width;
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137 }
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138
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139 if (this.height != height) {
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140 element.height = height * pixelRatio;
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141 element.style.height = height + "px";
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142 this.height = height;
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143 }
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144
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145 // Save the context, so we can reset in case we get replotted. The
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146 // restore ensure that we're really back at the initial state, and
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147 // should be safe even if we haven't saved the initial state yet.
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148
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149 context.restore();
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150 context.save();
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151
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152 // Scale the coordinate space to match the display density; so even though we
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153 // may have twice as many pixels, we still want lines and other drawing to
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154 // appear at the same size; the extra pixels will just make them crisper.
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155
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156 context.scale(pixelRatio, pixelRatio);
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157 };
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158
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159 // Clears the entire canvas area, not including any overlaid HTML text
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160
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161 Canvas.prototype.clear = function() {
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162 this.context.clearRect(0, 0, this.width, this.height);
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163 };
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164
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165 // Finishes rendering the canvas, including managing the text overlay.
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166
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167 Canvas.prototype.render = function() {
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168
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169 var cache = this._textCache;
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170
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171 // For each text layer, add elements marked as active that haven't
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172 // already been rendered, and remove those that are no longer active.
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173
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174 for (var layerKey in cache) {
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175 if (hasOwnProperty.call(cache, layerKey)) {
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176
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177 var layer = this.getTextLayer(layerKey),
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178 layerCache = cache[layerKey];
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179
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180 layer.hide();
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181
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182 for (var styleKey in layerCache) {
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183 if (hasOwnProperty.call(layerCache, styleKey)) {
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184 var styleCache = layerCache[styleKey];
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185 for (var key in styleCache) {
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186 if (hasOwnProperty.call(styleCache, key)) {
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187
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188 var positions = styleCache[key].positions;
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189
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190 for (var i = 0, position; position = positions[i]; i++) {
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191 if (position.active) {
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192 if (!position.rendered) {
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193 layer.append(position.element);
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194 position.rendered = true;
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195 }
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196 } else {
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197 positions.splice(i--, 1);
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198 if (position.rendered) {
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199 position.element.detach();
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200 }
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201 }
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202 }
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203
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204 if (positions.length == 0) {
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205 delete styleCache[key];
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206 }
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207 }
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208 }
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209 }
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210 }
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211
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212 layer.show();
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213 }
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214 }
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215 };
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216
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217 // Creates (if necessary) and returns the text overlay container.
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218 //
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219 // @param {string} classes String of space-separated CSS classes used to
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220 // uniquely identify the text layer.
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221 // @return {object} The jQuery-wrapped text-layer div.
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222
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223 Canvas.prototype.getTextLayer = function(classes) {
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224
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225 var layer = this.text[classes];
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226
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227 // Create the text layer if it doesn't exist
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228
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229 if (layer == null) {
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230
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231 // Create the text layer container, if it doesn't exist
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232
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233 if (this.textContainer == null) {
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234 this.textContainer = $("<div class='flot-text'></div>")
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235 .css({
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236 position: "absolute",
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237 top: 0,
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238 left: 0,
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239 bottom: 0,
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240 right: 0,
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241 'font-size': "smaller",
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242 color: "#545454"
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243 })
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244 .insertAfter(this.element);
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245 }
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246
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247 layer = this.text[classes] = $("<div></div>")
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248 .addClass(classes)
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249 .css({
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250 position: "absolute",
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251 top: 0,
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252 left: 0,
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253 bottom: 0,
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254 right: 0
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255 })
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256 .appendTo(this.textContainer);
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257 }
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258
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259 return layer;
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260 };
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261
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262 // Creates (if necessary) and returns a text info object.
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263 //
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264 // The object looks like this:
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265 //
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266 // {
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267 // width: Width of the text's wrapper div.
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268 // height: Height of the text's wrapper div.
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269 // element: The jQuery-wrapped HTML div containing the text.
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270 // positions: Array of positions at which this text is drawn.
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271 // }
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272 //
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273 // The positions array contains objects that look like this:
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274 //
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275 // {
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276 // active: Flag indicating whether the text should be visible.
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277 // rendered: Flag indicating whether the text is currently visible.
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278 // element: The jQuery-wrapped HTML div containing the text.
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279 // x: X coordinate at which to draw the text.
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280 // y: Y coordinate at which to draw the text.
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281 // }
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282 //
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283 // Each position after the first receives a clone of the original element.
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284 //
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285 // The idea is that that the width, height, and general 'identity' of the
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286 // text is constant no matter where it is placed; the placements are a
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287 // secondary property.
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288 //
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289 // Canvas maintains a cache of recently-used text info objects; getTextInfo
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290 // either returns the cached element or creates a new entry.
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291 //
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292 // @param {string} layer A string of space-separated CSS classes uniquely
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293 // identifying the layer containing this text.
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294 // @param {string} text Text string to retrieve info for.
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295 // @param {(string|object)=} font Either a string of space-separated CSS
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296 // classes or a font-spec object, defining the text's font and style.
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297 // @param {number=} angle Angle at which to rotate the text, in degrees.
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298 // Angle is currently unused, it will be implemented in the future.
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299 // @param {number=} width Maximum width of the text before it wraps.
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300 // @return {object} a text info object.
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301
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302 Canvas.prototype.getTextInfo = function(layer, text, font, angle, width) {
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303
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304 var textStyle, layerCache, styleCache, info;
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305
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306 // Cast the value to a string, in case we were given a number or such
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307
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308 text = "" + text;
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309
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310 // If the font is a font-spec object, generate a CSS font definition
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311
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312 if (typeof font === "object") {
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313 textStyle = font.style + " " + font.variant + " " + font.weight + " " + font.size + "px/" + font.lineHeight + "px " + font.family;
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314 } else {
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315 textStyle = font;
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316 }
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317
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318 // Retrieve (or create) the cache for the text's layer and styles
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319
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320 layerCache = this._textCache[layer];
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321
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322 if (layerCache == null) {
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323 layerCache = this._textCache[layer] = {};
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324 }
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325
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326 styleCache = layerCache[textStyle];
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327
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328 if (styleCache == null) {
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329 styleCache = layerCache[textStyle] = {};
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330 }
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331
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332 info = styleCache[text];
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333
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334 // If we can't find a matching element in our cache, create a new one
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335
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336 if (info == null) {
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337
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338 var element = $("<div></div>").html(text)
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339 .css({
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340 position: "absolute",
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341 'max-width': width,
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342 top: -9999
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343 })
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344 .appendTo(this.getTextLayer(layer));
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345
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346 if (typeof font === "object") {
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347 element.css({
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348 font: textStyle,
|
|
|
349 color: font.color
|
|
|
350 });
|
|
|
351 } else if (typeof font === "string") {
|
|
|
352 element.addClass(font);
|
|
|
353 }
|
|
|
354
|
|
|
355 info = styleCache[text] = {
|
|
|
356 width: element.outerWidth(true),
|
|
|
357 height: element.outerHeight(true),
|
|
|
358 element: element,
|
|
|
359 positions: []
|
|
|
360 };
|
|
|
361
|
|
|
362 element.detach();
|
|
|
363 }
|
|
|
364
|
|
|
365 return info;
|
|
|
366 };
|
|
|
367
|
|
|
368 // Adds a text string to the canvas text overlay.
|
|
|
369 //
|
|
|
370 // The text isn't drawn immediately; it is marked as rendering, which will
|
|
|
371 // result in its addition to the canvas on the next render pass.
|
|
|
372 //
|
|
|
373 // @param {string} layer A string of space-separated CSS classes uniquely
|
|
|
374 // identifying the layer containing this text.
|
|
|
375 // @param {number} x X coordinate at which to draw the text.
|
|
|
376 // @param {number} y Y coordinate at which to draw the text.
|
|
|
377 // @param {string} text Text string to draw.
|
|
|
378 // @param {(string|object)=} font Either a string of space-separated CSS
|
|
|
379 // classes or a font-spec object, defining the text's font and style.
|
|
|
380 // @param {number=} angle Angle at which to rotate the text, in degrees.
|
|
|
381 // Angle is currently unused, it will be implemented in the future.
|
|
|
382 // @param {number=} width Maximum width of the text before it wraps.
|
|
|
383 // @param {string=} halign Horizontal alignment of the text; either "left",
|
|
|
384 // "center" or "right".
|
|
|
385 // @param {string=} valign Vertical alignment of the text; either "top",
|
|
|
386 // "middle" or "bottom".
|
|
|
387
|
|
|
388 Canvas.prototype.addText = function(layer, x, y, text, font, angle, width, halign, valign) {
|
|
|
389
|
|
|
390 var info = this.getTextInfo(layer, text, font, angle, width),
|
|
|
391 positions = info.positions;
|
|
|
392
|
|
|
393 // Tweak the div's position to match the text's alignment
|
|
|
394
|
|
|
395 if (halign == "center") {
|
|
|
396 x -= info.width / 2;
|
|
|
397 } else if (halign == "right") {
|
|
|
398 x -= info.width;
|
|
|
399 }
|
|
|
400
|
|
|
401 if (valign == "middle") {
|
|
|
402 y -= info.height / 2;
|
|
|
403 } else if (valign == "bottom") {
|
|
|
404 y -= info.height;
|
|
|
405 }
|
|
|
406
|
|
|
407 // Determine whether this text already exists at this position.
|
|
|
408 // If so, mark it for inclusion in the next render pass.
|
|
|
409
|
|
|
410 for (var i = 0, position; position = positions[i]; i++) {
|
|
|
411 if (position.x == x && position.y == y) {
|
|
|
412 position.active = true;
|
|
|
413 return;
|
|
|
414 }
|
|
|
415 }
|
|
|
416
|
|
|
417 // If the text doesn't exist at this position, create a new entry
|
|
|
418
|
|
|
419 // For the very first position we'll re-use the original element,
|
|
|
420 // while for subsequent ones we'll clone it.
|
|
|
421
|
|
|
422 position = {
|
|
|
423 active: true,
|
|
|
424 rendered: false,
|
|
|
425 element: positions.length ? info.element.clone() : info.element,
|
|
|
426 x: x,
|
|
|
427 y: y
|
|
|
428 };
|
|
|
429
|
|
|
430 positions.push(position);
|
|
|
431
|
|
|
432 // Move the element to its final position within the container
|
|
|
433
|
|
|
434 position.element.css({
|
|
|
435 top: Math.round(y),
|
|
|
436 left: Math.round(x),
|
|
|
437 'text-align': halign // In case the text wraps
|
|
|
438 });
|
|
|
439 };
|
|
|
440
|
|
|
441 // Removes one or more text strings from the canvas text overlay.
|
|
|
442 //
|
|
|
443 // If no parameters are given, all text within the layer is removed.
|
|
|
444 //
|
|
|
445 // Note that the text is not immediately removed; it is simply marked as
|
|
|
446 // inactive, which will result in its removal on the next render pass.
|
|
|
447 // This avoids the performance penalty for 'clear and redraw' behavior,
|
|
|
448 // where we potentially get rid of all text on a layer, but will likely
|
|
|
449 // add back most or all of it later, as when redrawing axes, for example.
|
|
|
450 //
|
|
|
451 // @param {string} layer A string of space-separated CSS classes uniquely
|
|
|
452 // identifying the layer containing this text.
|
|
|
453 // @param {number=} x X coordinate of the text.
|
|
|
454 // @param {number=} y Y coordinate of the text.
|
|
|
455 // @param {string=} text Text string to remove.
|
|
|
456 // @param {(string|object)=} font Either a string of space-separated CSS
|
|
|
457 // classes or a font-spec object, defining the text's font and style.
|
|
|
458 // @param {number=} angle Angle at which the text is rotated, in degrees.
|
|
|
459 // Angle is currently unused, it will be implemented in the future.
|
|
|
460
|
|
|
461 Canvas.prototype.removeText = function(layer, x, y, text, font, angle) {
|
|
|
462 if (text == null) {
|
|
|
463 var layerCache = this._textCache[layer];
|
|
|
464 if (layerCache != null) {
|
|
|
465 for (var styleKey in layerCache) {
|
|
|
466 if (hasOwnProperty.call(layerCache, styleKey)) {
|
|
|
467 var styleCache = layerCache[styleKey];
|
|
|
468 for (var key in styleCache) {
|
|
|
469 if (hasOwnProperty.call(styleCache, key)) {
|
|
|
470 var positions = styleCache[key].positions;
|
|
|
471 for (var i = 0, position; position = positions[i]; i++) {
|
|
|
472 position.active = false;
|
|
|
473 }
|
|
|
474 }
|
|
|
475 }
|
|
|
476 }
|
|
|
477 }
|
|
|
478 }
|
|
|
479 } else {
|
|
|
480 var positions = this.getTextInfo(layer, text, font, angle).positions;
|
|
|
481 for (var i = 0, position; position = positions[i]; i++) {
|
|
|
482 if (position.x == x && position.y == y) {
|
|
|
483 position.active = false;
|
|
|
484 }
|
|
|
485 }
|
|
|
486 }
|
|
|
487 };
|
|
|
488
|
|
|
489 ///////////////////////////////////////////////////////////////////////////
|
|
|
490 // The top-level container for the entire plot.
|
|
|
491
|
|
|
492 function Plot(placeholder, data_, options_, plugins) {
|
|
|
493 // data is on the form:
|
|
|
494 // [ series1, series2 ... ]
|
|
|
495 // where series is either just the data as [ [x1, y1], [x2, y2], ... ]
|
|
|
496 // or { data: [ [x1, y1], [x2, y2], ... ], label: "some label", ... }
|
|
|
497
|
|
|
498 var series = [],
|
|
|
499 options = {
|
|
|
500 // the color theme used for graphs
|
|
|
501 colors: ["#edc240", "#afd8f8", "#cb4b4b", "#4da74d", "#9440ed"],
|
|
|
502 legend: {
|
|
|
503 show: true,
|
|
|
504 noColumns: 1, // number of colums in legend table
|
|
|
505 labelFormatter: null, // fn: string -> string
|
|
|
506 labelBoxBorderColor: "#ccc", // border color for the little label boxes
|
|
|
507 container: null, // container (as jQuery object) to put legend in, null means default on top of graph
|
|
|
508 position: "ne", // position of default legend container within plot
|
|
|
509 margin: 5, // distance from grid edge to default legend container within plot
|
|
|
510 backgroundColor: null, // null means auto-detect
|
|
|
511 backgroundOpacity: 0.85, // set to 0 to avoid background
|
|
|
512 sorted: null // default to no legend sorting
|
|
|
513 },
|
|
|
514 xaxis: {
|
|
|
515 show: null, // null = auto-detect, true = always, false = never
|
|
|
516 position: "bottom", // or "top"
|
|
|
517 mode: null, // null or "time"
|
|
|
518 font: null, // null (derived from CSS in placeholder) or object like { size: 11, lineHeight: 13, style: "italic", weight: "bold", family: "sans-serif", variant: "small-caps" }
|
|
|
519 color: null, // base color, labels, ticks
|
|
|
520 tickColor: null, // possibly different color of ticks, e.g. "rgba(0,0,0,0.15)"
|
|
|
521 transform: null, // null or f: number -> number to transform axis
|
|
|
522 inverseTransform: null, // if transform is set, this should be the inverse function
|
|
|
523 min: null, // min. value to show, null means set automatically
|
|
|
524 max: null, // max. value to show, null means set automatically
|
|
|
525 autoscaleMargin: null, // margin in % to add if auto-setting min/max
|
|
|
526 ticks: null, // either [1, 3] or [[1, "a"], 3] or (fn: axis info -> ticks) or app. number of ticks for auto-ticks
|
|
|
527 tickFormatter: null, // fn: number -> string
|
|
|
528 labelWidth: null, // size of tick labels in pixels
|
|
|
529 labelHeight: null,
|
|
|
530 reserveSpace: null, // whether to reserve space even if axis isn't shown
|
|
|
531 tickLength: null, // size in pixels of ticks, or "full" for whole line
|
|
|
532 alignTicksWithAxis: null, // axis number or null for no sync
|
|
|
533 tickDecimals: null, // no. of decimals, null means auto
|
|
|
534 tickSize: null, // number or [number, "unit"]
|
|
|
535 minTickSize: null // number or [number, "unit"]
|
|
|
536 },
|
|
|
537 yaxis: {
|
|
|
538 autoscaleMargin: 0.02,
|
|
|
539 position: "left" // or "right"
|
|
|
540 },
|
|
|
541 xaxes: [],
|
|
|
542 yaxes: [],
|
|
|
543 series: {
|
|
|
544 points: {
|
|
|
545 show: false,
|
|
|
546 radius: 3,
|
|
|
547 lineWidth: 2, // in pixels
|
|
|
548 fill: true,
|
|
|
549 fillColor: "#ffffff",
|
|
|
550 symbol: "circle" // or callback
|
|
|
551 },
|
|
|
552 lines: {
|
|
|
553 // we don't put in show: false so we can see
|
|
|
554 // whether lines were actively disabled
|
|
|
555 lineWidth: 2, // in pixels
|
|
|
556 fill: false,
|
|
|
557 fillColor: null,
|
|
|
558 steps: false
|
|
|
559 // Omit 'zero', so we can later default its value to
|
|
|
560 // match that of the 'fill' option.
|
|
|
561 },
|
|
|
562 bars: {
|
|
|
563 show: false,
|
|
|
564 lineWidth: 2, // in pixels
|
|
|
565 barWidth: 1, // in units of the x axis
|
|
|
566 fill: true,
|
|
|
567 fillColor: null,
|
|
|
568 align: "left", // "left", "right", or "center"
|
|
|
569 horizontal: false,
|
|
|
570 zero: true
|
|
|
571 },
|
|
|
572 shadowSize: 3,
|
|
|
573 highlightColor: null
|
|
|
574 },
|
|
|
575 grid: {
|
|
|
576 show: true,
|
|
|
577 aboveData: false,
|
|
|
578 color: "#545454", // primary color used for outline and labels
|
|
|
579 backgroundColor: null, // null for transparent, else color
|
|
|
580 borderColor: null, // set if different from the grid color
|
|
|
581 tickColor: null, // color for the ticks, e.g. "rgba(0,0,0,0.15)"
|
|
|
582 margin: 0, // distance from the canvas edge to the grid
|
|
|
583 labelMargin: 5, // in pixels
|
|
|
584 axisMargin: 8, // in pixels
|
|
|
585 borderWidth: 2, // in pixels
|
|
|
586 minBorderMargin: null, // in pixels, null means taken from points radius
|
|
|
587 markings: null, // array of ranges or fn: axes -> array of ranges
|
|
|
588 markingsColor: "#f4f4f4",
|
|
|
589 markingsLineWidth: 2,
|
|
|
590 // interactive stuff
|
|
|
591 clickable: false,
|
|
|
592 hoverable: false,
|
|
|
593 autoHighlight: true, // highlight in case mouse is near
|
|
|
594 mouseActiveRadius: 10 // how far the mouse can be away to activate an item
|
|
|
595 },
|
|
|
596 interaction: {
|
|
|
597 redrawOverlayInterval: 1000/60 // time between updates, -1 means in same flow
|
|
|
598 },
|
|
|
599 hooks: {}
|
|
|
600 },
|
|
|
601 surface = null, // the canvas for the plot itself
|
|
|
602 overlay = null, // canvas for interactive stuff on top of plot
|
|
|
603 eventHolder = null, // jQuery object that events should be bound to
|
|
|
604 ctx = null, octx = null,
|
|
|
605 xaxes = [], yaxes = [],
|
|
|
606 plotOffset = { left: 0, right: 0, top: 0, bottom: 0},
|
|
|
607 plotWidth = 0, plotHeight = 0,
|
|
|
608 hooks = {
|
|
|
609 processOptions: [],
|
|
|
610 processRawData: [],
|
|
|
611 processDatapoints: [],
|
|
|
612 processOffset: [],
|
|
|
613 drawBackground: [],
|
|
|
614 drawSeries: [],
|
|
|
615 draw: [],
|
|
|
616 bindEvents: [],
|
|
|
617 drawOverlay: [],
|
|
|
618 shutdown: []
|
|
|
619 },
|
|
|
620 plot = this;
|
|
|
621
|
|
|
622 // public functions
|
|
|
623 plot.setData = setData;
|
|
|
624 plot.setupGrid = setupGrid;
|
|
|
625 plot.draw = draw;
|
|
|
626 plot.getPlaceholder = function() { return placeholder; };
|
|
|
627 plot.getCanvas = function() { return surface.element; };
|
|
|
628 plot.getPlotOffset = function() { return plotOffset; };
|
|
|
629 plot.width = function () { return plotWidth; };
|
|
|
630 plot.height = function () { return plotHeight; };
|
|
|
631 plot.offset = function () {
|
|
|
632 var o = eventHolder.offset();
|
|
|
633 o.left += plotOffset.left;
|
|
|
634 o.top += plotOffset.top;
|
|
|
635 return o;
|
|
|
636 };
|
|
|
637 plot.getData = function () { return series; };
|
|
|
638 plot.getAxes = function () {
|
|
|
639 var res = {}, i;
|
|
|
640 $.each(xaxes.concat(yaxes), function (_, axis) {
|
|
|
641 if (axis)
|
|
|
642 res[axis.direction + (axis.n != 1 ? axis.n : "") + "axis"] = axis;
|
|
|
643 });
|
|
|
644 return res;
|
|
|
645 };
|
|
|
646 plot.getXAxes = function () { return xaxes; };
|
|
|
647 plot.getYAxes = function () { return yaxes; };
|
|
|
648 plot.c2p = canvasToAxisCoords;
|
|
|
649 plot.p2c = axisToCanvasCoords;
|
|
|
650 plot.getOptions = function () { return options; };
|
|
|
651 plot.highlight = highlight;
|
|
|
652 plot.unhighlight = unhighlight;
|
|
|
653 plot.triggerRedrawOverlay = triggerRedrawOverlay;
|
|
|
654 plot.pointOffset = function(point) {
|
|
|
655 return {
|
|
|
656 left: parseInt(xaxes[axisNumber(point, "x") - 1].p2c(+point.x) + plotOffset.left, 10),
|
|
|
657 top: parseInt(yaxes[axisNumber(point, "y") - 1].p2c(+point.y) + plotOffset.top, 10)
|
|
|
658 };
|
|
|
659 };
|
|
|
660 plot.shutdown = shutdown;
|
|
|
661 plot.destroy = function () {
|
|
|
662 shutdown();
|
|
|
663 placeholder.removeData("plot").empty();
|
|
|
664
|
|
|
665 series = [];
|
|
|
666 options = null;
|
|
|
667 surface = null;
|
|
|
668 overlay = null;
|
|
|
669 eventHolder = null;
|
|
|
670 ctx = null;
|
|
|
671 octx = null;
|
|
|
672 xaxes = [];
|
|
|
673 yaxes = [];
|
|
|
674 hooks = null;
|
|
|
675 highlights = [];
|
|
|
676 plot = null;
|
|
|
677 };
|
|
|
678 plot.resize = function () {
|
|
|
679 var width = placeholder.width(),
|
|
|
680 height = placeholder.height();
|
|
|
681 surface.resize(width, height);
|
|
|
682 overlay.resize(width, height);
|
|
|
683 };
|
|
|
684
|
|
|
685 // public attributes
|
|
|
686 plot.hooks = hooks;
|
|
|
687
|
|
|
688 // initialize
|
|
|
689 initPlugins(plot);
|
|
|
690 parseOptions(options_);
|
|
|
691 setupCanvases();
|
|
|
692 setData(data_);
|
|
|
693 setupGrid();
|
|
|
694 draw();
|
|
|
695 bindEvents();
|
|
|
696
|
|
|
697
|
|
|
698 function executeHooks(hook, args) {
|
|
|
699 args = [plot].concat(args);
|
|
|
700 for (var i = 0; i < hook.length; ++i)
|
|
|
701 hook[i].apply(this, args);
|
|
|
702 }
|
|
|
703
|
|
|
704 function initPlugins() {
|
|
|
705
|
|
|
706 // References to key classes, allowing plugins to modify them
|
|
|
707
|
|
|
708 var classes = {
|
|
|
709 Canvas: Canvas
|
|
|
710 };
|
|
|
711
|
|
|
712 for (var i = 0; i < plugins.length; ++i) {
|
|
|
713 var p = plugins[i];
|
|
|
714 p.init(plot, classes);
|
|
|
715 if (p.options)
|
|
|
716 $.extend(true, options, p.options);
|
|
|
717 }
|
|
|
718 }
|
|
|
719
|
|
|
720 function parseOptions(opts) {
|
|
|
721
|
|
|
722 $.extend(true, options, opts);
|
|
|
723
|
|
|
724 // $.extend merges arrays, rather than replacing them. When less
|
|
|
725 // colors are provided than the size of the default palette, we
|
|
|
726 // end up with those colors plus the remaining defaults, which is
|
|
|
727 // not expected behavior; avoid it by replacing them here.
|
|
|
728
|
|
|
729 if (opts && opts.colors) {
|
|
|
730 options.colors = opts.colors;
|
|
|
731 }
|
|
|
732
|
|
|
733 if (options.xaxis.color == null)
|
|
|
734 options.xaxis.color = $.color.parse(options.grid.color).scale('a', 0.22).toString();
|
|
|
735 if (options.yaxis.color == null)
|
|
|
736 options.yaxis.color = $.color.parse(options.grid.color).scale('a', 0.22).toString();
|
|
|
737
|
|
|
738 if (options.xaxis.tickColor == null) // grid.tickColor for back-compatibility
|
|
|
739 options.xaxis.tickColor = options.grid.tickColor || options.xaxis.color;
|
|
|
740 if (options.yaxis.tickColor == null) // grid.tickColor for back-compatibility
|
|
|
741 options.yaxis.tickColor = options.grid.tickColor || options.yaxis.color;
|
|
|
742
|
|
|
743 if (options.grid.borderColor == null)
|
|
|
744 options.grid.borderColor = options.grid.color;
|
|
|
745 if (options.grid.tickColor == null)
|
|
|
746 options.grid.tickColor = $.color.parse(options.grid.color).scale('a', 0.22).toString();
|
|
|
747
|
|
|
748 // Fill in defaults for axis options, including any unspecified
|
|
|
749 // font-spec fields, if a font-spec was provided.
|
|
|
750
|
|
|
751 // If no x/y axis options were provided, create one of each anyway,
|
|
|
752 // since the rest of the code assumes that they exist.
|
|
|
753
|
|
|
754 var i, axisOptions, axisCount,
|
|
|
755 fontSize = placeholder.css("font-size"),
|
|
|
756 fontSizeDefault = fontSize ? +fontSize.replace("px", "") : 13,
|
|
|
757 fontDefaults = {
|
|
|
758 style: placeholder.css("font-style"),
|
|
|
759 size: Math.round(0.8 * fontSizeDefault),
|
|
|
760 variant: placeholder.css("font-variant"),
|
|
|
761 weight: placeholder.css("font-weight"),
|
|
|
762 family: placeholder.css("font-family")
|
|
|
763 };
|
|
|
764
|
|
|
765 axisCount = options.xaxes.length || 1;
|
|
|
766 for (i = 0; i < axisCount; ++i) {
|
|
|
767
|
|
|
768 axisOptions = options.xaxes[i];
|
|
|
769 if (axisOptions && !axisOptions.tickColor) {
|
|
|
770 axisOptions.tickColor = axisOptions.color;
|
|
|
771 }
|
|
|
772
|
|
|
773 axisOptions = $.extend(true, {}, options.xaxis, axisOptions);
|
|
|
774 options.xaxes[i] = axisOptions;
|
|
|
775
|
|
|
776 if (axisOptions.font) {
|
|
|
777 axisOptions.font = $.extend({}, fontDefaults, axisOptions.font);
|
|
|
778 if (!axisOptions.font.color) {
|
|
|
779 axisOptions.font.color = axisOptions.color;
|
|
|
780 }
|
|
|
781 if (!axisOptions.font.lineHeight) {
|
|
|
782 axisOptions.font.lineHeight = Math.round(axisOptions.font.size * 1.15);
|
|
|
783 }
|
|
|
784 }
|
|
|
785 }
|
|
|
786
|
|
|
787 axisCount = options.yaxes.length || 1;
|
|
|
788 for (i = 0; i < axisCount; ++i) {
|
|
|
789
|
|
|
790 axisOptions = options.yaxes[i];
|
|
|
791 if (axisOptions && !axisOptions.tickColor) {
|
|
|
792 axisOptions.tickColor = axisOptions.color;
|
|
|
793 }
|
|
|
794
|
|
|
795 axisOptions = $.extend(true, {}, options.yaxis, axisOptions);
|
|
|
796 options.yaxes[i] = axisOptions;
|
|
|
797
|
|
|
798 if (axisOptions.font) {
|
|
|
799 axisOptions.font = $.extend({}, fontDefaults, axisOptions.font);
|
|
|
800 if (!axisOptions.font.color) {
|
|
|
801 axisOptions.font.color = axisOptions.color;
|
|
|
802 }
|
|
|
803 if (!axisOptions.font.lineHeight) {
|
|
|
804 axisOptions.font.lineHeight = Math.round(axisOptions.font.size * 1.15);
|
|
|
805 }
|
|
|
806 }
|
|
|
807 }
|
|
|
808
|
|
|
809 // backwards compatibility, to be removed in future
|
|
|
810 if (options.xaxis.noTicks && options.xaxis.ticks == null)
|
|
|
811 options.xaxis.ticks = options.xaxis.noTicks;
|
|
|
812 if (options.yaxis.noTicks && options.yaxis.ticks == null)
|
|
|
813 options.yaxis.ticks = options.yaxis.noTicks;
|
|
|
814 if (options.x2axis) {
|
|
|
815 options.xaxes[1] = $.extend(true, {}, options.xaxis, options.x2axis);
|
|
|
816 options.xaxes[1].position = "top";
|
|
|
817 }
|
|
|
818 if (options.y2axis) {
|
|
|
819 options.yaxes[1] = $.extend(true, {}, options.yaxis, options.y2axis);
|
|
|
820 options.yaxes[1].position = "right";
|
|
|
821 }
|
|
|
822 if (options.grid.coloredAreas)
|
|
|
823 options.grid.markings = options.grid.coloredAreas;
|
|
|
824 if (options.grid.coloredAreasColor)
|
|
|
825 options.grid.markingsColor = options.grid.coloredAreasColor;
|
|
|
826 if (options.lines)
|
|
|
827 $.extend(true, options.series.lines, options.lines);
|
|
|
828 if (options.points)
|
|
|
829 $.extend(true, options.series.points, options.points);
|
|
|
830 if (options.bars)
|
|
|
831 $.extend(true, options.series.bars, options.bars);
|
|
|
832 if (options.shadowSize != null)
|
|
|
833 options.series.shadowSize = options.shadowSize;
|
|
|
834 if (options.highlightColor != null)
|
|
|
835 options.series.highlightColor = options.highlightColor;
|
|
|
836
|
|
|
837 // save options on axes for future reference
|
|
|
838 for (i = 0; i < options.xaxes.length; ++i)
|
|
|
839 getOrCreateAxis(xaxes, i + 1).options = options.xaxes[i];
|
|
|
840 for (i = 0; i < options.yaxes.length; ++i)
|
|
|
841 getOrCreateAxis(yaxes, i + 1).options = options.yaxes[i];
|
|
|
842
|
|
|
843 // add hooks from options
|
|
|
844 for (var n in hooks)
|
|
|
845 if (options.hooks[n] && options.hooks[n].length)
|
|
|
846 hooks[n] = hooks[n].concat(options.hooks[n]);
|
|
|
847
|
|
|
848 executeHooks(hooks.processOptions, [options]);
|
|
|
849 }
|
|
|
850
|
|
|
851 function setData(d) {
|
|
|
852 series = parseData(d);
|
|
|
853 fillInSeriesOptions();
|
|
|
854 processData();
|
|
|
855 }
|
|
|
856
|
|
|
857 function parseData(d) {
|
|
|
858 var res = [];
|
|
|
859 for (var i = 0; i < d.length; ++i) {
|
|
|
860 var s = $.extend(true, {}, options.series);
|
|
|
861
|
|
|
862 if (d[i].data != null) {
|
|
|
863 s.data = d[i].data; // move the data instead of deep-copy
|
|
|
864 delete d[i].data;
|
|
|
865
|
|
|
866 $.extend(true, s, d[i]);
|
|
|
867
|
|
|
868 d[i].data = s.data;
|
|
|
869 }
|
|
|
870 else
|
|
|
871 s.data = d[i];
|
|
|
872 res.push(s);
|
|
|
873 }
|
|
|
874
|
|
|
875 return res;
|
|
|
876 }
|
|
|
877
|
|
|
878 function axisNumber(obj, coord) {
|
|
|
879 var a = obj[coord + "axis"];
|
|
|
880 if (typeof a == "object") // if we got a real axis, extract number
|
|
|
881 a = a.n;
|
|
|
882 if (typeof a != "number")
|
|
|
883 a = 1; // default to first axis
|
|
|
884 return a;
|
|
|
885 }
|
|
|
886
|
|
|
887 function allAxes() {
|
|
|
888 // return flat array without annoying null entries
|
|
|
889 return $.grep(xaxes.concat(yaxes), function (a) { return a; });
|
|
|
890 }
|
|
|
891
|
|
|
892 function canvasToAxisCoords(pos) {
|
|
|
893 // return an object with x/y corresponding to all used axes
|
|
|
894 var res = {}, i, axis;
|
|
|
895 for (i = 0; i < xaxes.length; ++i) {
|
|
|
896 axis = xaxes[i];
|
|
|
897 if (axis && axis.used)
|
|
|
898 res["x" + axis.n] = axis.c2p(pos.left);
|
|
|
899 }
|
|
|
900
|
|
|
901 for (i = 0; i < yaxes.length; ++i) {
|
|
|
902 axis = yaxes[i];
|
|
|
903 if (axis && axis.used)
|
|
|
904 res["y" + axis.n] = axis.c2p(pos.top);
|
|
|
905 }
|
|
|
906
|
|
|
907 if (res.x1 !== undefined)
|
|
|
908 res.x = res.x1;
|
|
|
909 if (res.y1 !== undefined)
|
|
|
910 res.y = res.y1;
|
|
|
911
|
|
|
912 return res;
|
|
|
913 }
|
|
|
914
|
|
|
915 function axisToCanvasCoords(pos) {
|
|
|
916 // get canvas coords from the first pair of x/y found in pos
|
|
|
917 var res = {}, i, axis, key;
|
|
|
918
|
|
|
919 for (i = 0; i < xaxes.length; ++i) {
|
|
|
920 axis = xaxes[i];
|
|
|
921 if (axis && axis.used) {
|
|
|
922 key = "x" + axis.n;
|
|
|
923 if (pos[key] == null && axis.n == 1)
|
|
|
924 key = "x";
|
|
|
925
|
|
|
926 if (pos[key] != null) {
|
|
|
927 res.left = axis.p2c(pos[key]);
|
|
|
928 break;
|
|
|
929 }
|
|
|
930 }
|
|
|
931 }
|
|
|
932
|
|
|
933 for (i = 0; i < yaxes.length; ++i) {
|
|
|
934 axis = yaxes[i];
|
|
|
935 if (axis && axis.used) {
|
|
|
936 key = "y" + axis.n;
|
|
|
937 if (pos[key] == null && axis.n == 1)
|
|
|
938 key = "y";
|
|
|
939
|
|
|
940 if (pos[key] != null) {
|
|
|
941 res.top = axis.p2c(pos[key]);
|
|
|
942 break;
|
|
|
943 }
|
|
|
944 }
|
|
|
945 }
|
|
|
946
|
|
|
947 return res;
|
|
|
948 }
|
|
|
949
|
|
|
950 function getOrCreateAxis(axes, number) {
|
|
|
951 if (!axes[number - 1])
|
|
|
952 axes[number - 1] = {
|
|
|
953 n: number, // save the number for future reference
|
|
|
954 direction: axes == xaxes ? "x" : "y",
|
|
|
955 options: $.extend(true, {}, axes == xaxes ? options.xaxis : options.yaxis)
|
|
|
956 };
|
|
|
957
|
|
|
958 return axes[number - 1];
|
|
|
959 }
|
|
|
960
|
|
|
961 function fillInSeriesOptions() {
|
|
|
962
|
|
|
963 var neededColors = series.length, maxIndex = -1, i;
|
|
|
964
|
|
|
965 // Subtract the number of series that already have fixed colors or
|
|
|
966 // color indexes from the number that we still need to generate.
|
|
|
967
|
|
|
968 for (i = 0; i < series.length; ++i) {
|
|
|
969 var sc = series[i].color;
|
|
|
970 if (sc != null) {
|
|
|
971 neededColors--;
|
|
|
972 if (typeof sc == "number" && sc > maxIndex) {
|
|
|
973 maxIndex = sc;
|
|
|
974 }
|
|
|
975 }
|
|
|
976 }
|
|
|
977
|
|
|
978 // If any of the series have fixed color indexes, then we need to
|
|
|
979 // generate at least as many colors as the highest index.
|
|
|
980
|
|
|
981 if (neededColors <= maxIndex) {
|
|
|
982 neededColors = maxIndex + 1;
|
|
|
983 }
|
|
|
984
|
|
|
985 // Generate all the colors, using first the option colors and then
|
|
|
986 // variations on those colors once they're exhausted.
|
|
|
987
|
|
|
988 var c, colors = [], colorPool = options.colors,
|
|
|
989 colorPoolSize = colorPool.length, variation = 0;
|
|
|
990
|
|
|
991 for (i = 0; i < neededColors; i++) {
|
|
|
992
|
|
|
993 c = $.color.parse(colorPool[i % colorPoolSize] || "#666");
|
|
|
994
|
|
|
995 // Each time we exhaust the colors in the pool we adjust
|
|
|
996 // a scaling factor used to produce more variations on
|
|
|
997 // those colors. The factor alternates negative/positive
|
|
|
998 // to produce lighter/darker colors.
|
|
|
999
|
|
|
1000 // Reset the variation after every few cycles, or else
|
|
|
1001 // it will end up producing only white or black colors.
|
|
|
1002
|
|
|
1003 if (i % colorPoolSize == 0 && i) {
|
|
|
1004 if (variation >= 0) {
|
|
|
1005 if (variation < 0.5) {
|
|
|
1006 variation = -variation - 0.2;
|
|
|
1007 } else variation = 0;
|
|
|
1008 } else variation = -variation;
|
|
|
1009 }
|
|
|
1010
|
|
|
1011 colors[i] = c.scale('rgb', 1 + variation);
|
|
|
1012 }
|
|
|
1013
|
|
|
1014 // Finalize the series options, filling in their colors
|
|
|
1015
|
|
|
1016 var colori = 0, s;
|
|
|
1017 for (i = 0; i < series.length; ++i) {
|
|
|
1018 s = series[i];
|
|
|
1019
|
|
|
1020 // assign colors
|
|
|
1021 if (s.color == null) {
|
|
|
1022 s.color = colors[colori].toString();
|
|
|
1023 ++colori;
|
|
|
1024 }
|
|
|
1025 else if (typeof s.color == "number")
|
|
|
1026 s.color = colors[s.color].toString();
|
|
|
1027
|
|
|
1028 // turn on lines automatically in case nothing is set
|
|
|
1029 if (s.lines.show == null) {
|
|
|
1030 var v, show = true;
|
|
|
1031 for (v in s)
|
|
|
1032 if (s[v] && s[v].show) {
|
|
|
1033 show = false;
|
|
|
1034 break;
|
|
|
1035 }
|
|
|
1036 if (show)
|
|
|
1037 s.lines.show = true;
|
|
|
1038 }
|
|
|
1039
|
|
|
1040 // If nothing was provided for lines.zero, default it to match
|
|
|
1041 // lines.fill, since areas by default should extend to zero.
|
|
|
1042
|
|
|
1043 if (s.lines.zero == null) {
|
|
|
1044 s.lines.zero = !!s.lines.fill;
|
|
|
1045 }
|
|
|
1046
|
|
|
1047 // setup axes
|
|
|
1048 s.xaxis = getOrCreateAxis(xaxes, axisNumber(s, "x"));
|
|
|
1049 s.yaxis = getOrCreateAxis(yaxes, axisNumber(s, "y"));
|
|
|
1050 }
|
|
|
1051 }
|
|
|
1052
|
|
|
1053 function processData() {
|
|
|
1054 var topSentry = Number.POSITIVE_INFINITY,
|
|
|
1055 bottomSentry = Number.NEGATIVE_INFINITY,
|
|
|
1056 fakeInfinity = Number.MAX_VALUE,
|
|
|
1057 i, j, k, m, length,
|
|
|
1058 s, points, ps, x, y, axis, val, f, p,
|
|
|
1059 data, format;
|
|
|
1060
|
|
|
1061 function updateAxis(axis, min, max) {
|
|
|
1062 if (min < axis.datamin && min != -fakeInfinity)
|
|
|
1063 axis.datamin = min;
|
|
|
1064 if (max > axis.datamax && max != fakeInfinity)
|
|
|
1065 axis.datamax = max;
|
|
|
1066 }
|
|
|
1067
|
|
|
1068 $.each(allAxes(), function (_, axis) {
|
|
|
1069 // init axis
|
|
|
1070 axis.datamin = topSentry;
|
|
|
1071 axis.datamax = bottomSentry;
|
|
|
1072 axis.used = false;
|
|
|
1073 });
|
|
|
1074
|
|
|
1075 for (i = 0; i < series.length; ++i) {
|
|
|
1076 s = series[i];
|
|
|
1077 s.datapoints = { points: [] };
|
|
|
1078
|
|
|
1079 executeHooks(hooks.processRawData, [ s, s.data, s.datapoints ]);
|
|
|
1080 }
|
|
|
1081
|
|
|
1082 // first pass: clean and copy data
|
|
|
1083 for (i = 0; i < series.length; ++i) {
|
|
|
1084 s = series[i];
|
|
|
1085
|
|
|
1086 data = s.data;
|
|
|
1087 format = s.datapoints.format;
|
|
|
1088
|
|
|
1089 if (!format) {
|
|
|
1090 format = [];
|
|
|
1091 // find out how to copy
|
|
|
1092 format.push({ x: true, number: true, required: true });
|
|
|
1093 format.push({ y: true, number: true, required: true });
|
|
|
1094
|
|
|
1095 if (s.bars.show || (s.lines.show && s.lines.fill)) {
|
|
|
1096 var autoscale = !!((s.bars.show && s.bars.zero) || (s.lines.show && s.lines.zero));
|
|
|
1097 format.push({ y: true, number: true, required: false, defaultValue: 0, autoscale: autoscale });
|
|
|
1098 if (s.bars.horizontal) {
|
|
|
1099 delete format[format.length - 1].y;
|
|
|
1100 format[format.length - 1].x = true;
|
|
|
1101 }
|
|
|
1102 }
|
|
|
1103
|
|
|
1104 s.datapoints.format = format;
|
|
|
1105 }
|
|
|
1106
|
|
|
1107 if (s.datapoints.pointsize != null)
|
|
|
1108 continue; // already filled in
|
|
|
1109
|
|
|
1110 s.datapoints.pointsize = format.length;
|
|
|
1111
|
|
|
1112 ps = s.datapoints.pointsize;
|
|
|
1113 points = s.datapoints.points;
|
|
|
1114
|
|
|
1115 var insertSteps = s.lines.show && s.lines.steps;
|
|
|
1116 s.xaxis.used = s.yaxis.used = true;
|
|
|
1117
|
|
|
1118 for (j = k = 0; j < data.length; ++j, k += ps) {
|
|
|
1119 p = data[j];
|
|
|
1120
|
|
|
1121 var nullify = p == null;
|
|
|
1122 if (!nullify) {
|
|
|
1123 for (m = 0; m < ps; ++m) {
|
|
|
1124 val = p[m];
|
|
|
1125 f = format[m];
|
|
|
1126
|
|
|
1127 if (f) {
|
|
|
1128 if (f.number && val != null) {
|
|
|
1129 val = +val; // convert to number
|
|
|
1130 if (isNaN(val))
|
|
|
1131 val = null;
|
|
|
1132 else if (val == Infinity)
|
|
|
1133 val = fakeInfinity;
|
|
|
1134 else if (val == -Infinity)
|
|
|
1135 val = -fakeInfinity;
|
|
|
1136 }
|
|
|
1137
|
|
|
1138 if (val == null) {
|
|
|
1139 if (f.required)
|
|
|
1140 nullify = true;
|
|
|
1141
|
|
|
1142 if (f.defaultValue != null)
|
|
|
1143 val = f.defaultValue;
|
|
|
1144 }
|
|
|
1145 }
|
|
|
1146
|
|
|
1147 points[k + m] = val;
|
|
|
1148 }
|
|
|
1149 }
|
|
|
1150
|
|
|
1151 if (nullify) {
|
|
|
1152 for (m = 0; m < ps; ++m) {
|
|
|
1153 val = points[k + m];
|
|
|
1154 if (val != null) {
|
|
|
1155 f = format[m];
|
|
|
1156 // extract min/max info
|
|
|
1157 if (f.autoscale !== false) {
|
|
|
1158 if (f.x) {
|
|
|
1159 updateAxis(s.xaxis, val, val);
|
|
|
1160 }
|
|
|
1161 if (f.y) {
|
|
|
1162 updateAxis(s.yaxis, val, val);
|
|
|
1163 }
|
|
|
1164 }
|
|
|
1165 }
|
|
|
1166 points[k + m] = null;
|
|
|
1167 }
|
|
|
1168 }
|
|
|
1169 else {
|
|
|
1170 // a little bit of line specific stuff that
|
|
|
1171 // perhaps shouldn't be here, but lacking
|
|
|
1172 // better means...
|
|
|
1173 if (insertSteps && k > 0
|
|
|
1174 && points[k - ps] != null
|
|
|
1175 && points[k - ps] != points[k]
|
|
|
1176 && points[k - ps + 1] != points[k + 1]) {
|
|
|
1177 // copy the point to make room for a middle point
|
|
|
1178 for (m = 0; m < ps; ++m)
|
|
|
1179 points[k + ps + m] = points[k + m];
|
|
|
1180
|
|
|
1181 // middle point has same y
|
|
|
1182 points[k + 1] = points[k - ps + 1];
|
|
|
1183
|
|
|
1184 // we've added a point, better reflect that
|
|
|
1185 k += ps;
|
|
|
1186 }
|
|
|
1187 }
|
|
|
1188 }
|
|
|
1189 }
|
|
|
1190
|
|
|
1191 // give the hooks a chance to run
|
|
|
1192 for (i = 0; i < series.length; ++i) {
|
|
|
1193 s = series[i];
|
|
|
1194
|
|
|
1195 executeHooks(hooks.processDatapoints, [ s, s.datapoints]);
|
|
|
1196 }
|
|
|
1197
|
|
|
1198 // second pass: find datamax/datamin for auto-scaling
|
|
|
1199 for (i = 0; i < series.length; ++i) {
|
|
|
1200 s = series[i];
|
|
|
1201 points = s.datapoints.points;
|
|
|
1202 ps = s.datapoints.pointsize;
|
|
|
1203 format = s.datapoints.format;
|
|
|
1204
|
|
|
1205 var xmin = topSentry, ymin = topSentry,
|
|
|
1206 xmax = bottomSentry, ymax = bottomSentry;
|
|
|
1207
|
|
|
1208 for (j = 0; j < points.length; j += ps) {
|
|
|
1209 if (points[j] == null)
|
|
|
1210 continue;
|
|
|
1211
|
|
|
1212 for (m = 0; m < ps; ++m) {
|
|
|
1213 val = points[j + m];
|
|
|
1214 f = format[m];
|
|
|
1215 if (!f || f.autoscale === false || val == fakeInfinity || val == -fakeInfinity)
|
|
|
1216 continue;
|
|
|
1217
|
|
|
1218 if (f.x) {
|
|
|
1219 if (val < xmin)
|
|
|
1220 xmin = val;
|
|
|
1221 if (val > xmax)
|
|
|
1222 xmax = val;
|
|
|
1223 }
|
|
|
1224 if (f.y) {
|
|
|
1225 if (val < ymin)
|
|
|
1226 ymin = val;
|
|
|
1227 if (val > ymax)
|
|
|
1228 ymax = val;
|
|
|
1229 }
|
|
|
1230 }
|
|
|
1231 }
|
|
|
1232
|
|
|
1233 if (s.bars.show) {
|
|
|
1234 // make sure we got room for the bar on the dancing floor
|
|
|
1235 var delta;
|
|
|
1236
|
|
|
1237 switch (s.bars.align) {
|
|
|
1238 case "left":
|
|
|
1239 delta = 0;
|
|
|
1240 break;
|
|
|
1241 case "right":
|
|
|
1242 delta = -s.bars.barWidth;
|
|
|
1243 break;
|
|
|
1244 default:
|
|
|
1245 delta = -s.bars.barWidth / 2;
|
|
|
1246 }
|
|
|
1247
|
|
|
1248 if (s.bars.horizontal) {
|
|
|
1249 ymin += delta;
|
|
|
1250 ymax += delta + s.bars.barWidth;
|
|
|
1251 }
|
|
|
1252 else {
|
|
|
1253 xmin += delta;
|
|
|
1254 xmax += delta + s.bars.barWidth;
|
|
|
1255 }
|
|
|
1256 }
|
|
|
1257
|
|
|
1258 updateAxis(s.xaxis, xmin, xmax);
|
|
|
1259 updateAxis(s.yaxis, ymin, ymax);
|
|
|
1260 }
|
|
|
1261
|
|
|
1262 $.each(allAxes(), function (_, axis) {
|
|
|
1263 if (axis.datamin == topSentry)
|
|
|
1264 axis.datamin = null;
|
|
|
1265 if (axis.datamax == bottomSentry)
|
|
|
1266 axis.datamax = null;
|
|
|
1267 });
|
|
|
1268 }
|
|
|
1269
|
|
|
1270 function setupCanvases() {
|
|
|
1271
|
|
|
1272 // Make sure the placeholder is clear of everything except canvases
|
|
|
1273 // from a previous plot in this container that we'll try to re-use.
|
|
|
1274
|
|
|
1275 placeholder.css("padding", 0) // padding messes up the positioning
|
|
|
1276 .children().filter(function(){
|
|
|
1277 return !$(this).hasClass("flot-overlay") && !$(this).hasClass('flot-base');
|
|
|
1278 }).remove();
|
|
|
1279
|
|
|
1280 if (placeholder.css("position") == 'static')
|
|
|
1281 placeholder.css("position", "relative"); // for positioning labels and overlay
|
|
|
1282
|
|
|
1283 surface = new Canvas("flot-base", placeholder);
|
|
|
1284 overlay = new Canvas("flot-overlay", placeholder); // overlay canvas for interactive features
|
|
|
1285
|
|
|
1286 ctx = surface.context;
|
|
|
1287 octx = overlay.context;
|
|
|
1288
|
|
|
1289 // define which element we're listening for events on
|
|
|
1290 eventHolder = $(overlay.element).unbind();
|
|
|
1291
|
|
|
1292 // If we're re-using a plot object, shut down the old one
|
|
|
1293
|
|
|
1294 var existing = placeholder.data("plot");
|
|
|
1295
|
|
|
1296 if (existing) {
|
|
|
1297 existing.shutdown();
|
|
|
1298 overlay.clear();
|
|
|
1299 }
|
|
|
1300
|
|
|
1301 // save in case we get replotted
|
|
|
1302 placeholder.data("plot", plot);
|
|
|
1303 }
|
|
|
1304
|
|
|
1305 function bindEvents() {
|
|
|
1306 // bind events
|
|
|
1307 if (options.grid.hoverable) {
|
|
|
1308 eventHolder.mousemove(onMouseMove);
|
|
|
1309
|
|
|
1310 // Use bind, rather than .mouseleave, because we officially
|
|
|
1311 // still support jQuery 1.2.6, which doesn't define a shortcut
|
|
|
1312 // for mouseenter or mouseleave. This was a bug/oversight that
|
|
|
1313 // was fixed somewhere around 1.3.x. We can return to using
|
|
|
1314 // .mouseleave when we drop support for 1.2.6.
|
|
|
1315
|
|
|
1316 eventHolder.bind("mouseleave", onMouseLeave);
|
|
|
1317 }
|
|
|
1318
|
|
|
1319 if (options.grid.clickable)
|
|
|
1320 eventHolder.click(onClick);
|
|
|
1321
|
|
|
1322 executeHooks(hooks.bindEvents, [eventHolder]);
|
|
|
1323 }
|
|
|
1324
|
|
|
1325 function shutdown() {
|
|
|
1326 if (redrawTimeout)
|
|
|
1327 clearTimeout(redrawTimeout);
|
|
|
1328
|
|
|
1329 eventHolder.unbind("mousemove", onMouseMove);
|
|
|
1330 eventHolder.unbind("mouseleave", onMouseLeave);
|
|
|
1331 eventHolder.unbind("click", onClick);
|
|
|
1332
|
|
|
1333 executeHooks(hooks.shutdown, [eventHolder]);
|
|
|
1334 }
|
|
|
1335
|
|
|
1336 function setTransformationHelpers(axis) {
|
|
|
1337 // set helper functions on the axis, assumes plot area
|
|
|
1338 // has been computed already
|
|
|
1339
|
|
|
1340 function identity(x) { return x; }
|
|
|
1341
|
|
|
1342 var s, m, t = axis.options.transform || identity,
|
|
|
1343 it = axis.options.inverseTransform;
|
|
|
1344
|
|
|
1345 // precompute how much the axis is scaling a point
|
|
|
1346 // in canvas space
|
|
|
1347 if (axis.direction == "x") {
|
|
|
1348 s = axis.scale = plotWidth / Math.abs(t(axis.max) - t(axis.min));
|
|
|
1349 m = Math.min(t(axis.max), t(axis.min));
|
|
|
1350 }
|
|
|
1351 else {
|
|
|
1352 s = axis.scale = plotHeight / Math.abs(t(axis.max) - t(axis.min));
|
|
|
1353 s = -s;
|
|
|
1354 m = Math.max(t(axis.max), t(axis.min));
|
|
|
1355 }
|
|
|
1356
|
|
|
1357 // data point to canvas coordinate
|
|
|
1358 if (t == identity) // slight optimization
|
|
|
1359 axis.p2c = function (p) { return (p - m) * s; };
|
|
|
1360 else
|
|
|
1361 axis.p2c = function (p) { return (t(p) - m) * s; };
|
|
|
1362 // canvas coordinate to data point
|
|
|
1363 if (!it)
|
|
|
1364 axis.c2p = function (c) { return m + c / s; };
|
|
|
1365 else
|
|
|
1366 axis.c2p = function (c) { return it(m + c / s); };
|
|
|
1367 }
|
|
|
1368
|
|
|
1369 function measureTickLabels(axis) {
|
|
|
1370
|
|
|
1371 var opts = axis.options,
|
|
|
1372 ticks = axis.ticks || [],
|
|
|
1373 labelWidth = opts.labelWidth || 0,
|
|
|
1374 labelHeight = opts.labelHeight || 0,
|
|
|
1375 maxWidth = labelWidth || (axis.direction == "x" ? Math.floor(surface.width / (ticks.length || 1)) : null),
|
|
|
1376 legacyStyles = axis.direction + "Axis " + axis.direction + axis.n + "Axis",
|
|
|
1377 layer = "flot-" + axis.direction + "-axis flot-" + axis.direction + axis.n + "-axis " + legacyStyles,
|
|
|
1378 font = opts.font || "flot-tick-label tickLabel";
|
|
|
1379
|
|
|
1380 for (var i = 0; i < ticks.length; ++i) {
|
|
|
1381
|
|
|
1382 var t = ticks[i];
|
|
|
1383
|
|
|
1384 if (!t.label)
|
|
|
1385 continue;
|
|
|
1386
|
|
|
1387 var info = surface.getTextInfo(layer, t.label, font, null, maxWidth);
|
|
|
1388
|
|
|
1389 labelWidth = Math.max(labelWidth, info.width);
|
|
|
1390 labelHeight = Math.max(labelHeight, info.height);
|
|
|
1391 }
|
|
|
1392
|
|
|
1393 axis.labelWidth = opts.labelWidth || labelWidth;
|
|
|
1394 axis.labelHeight = opts.labelHeight || labelHeight;
|
|
|
1395 }
|
|
|
1396
|
|
|
1397 function allocateAxisBoxFirstPhase(axis) {
|
|
|
1398 // find the bounding box of the axis by looking at label
|
|
|
1399 // widths/heights and ticks, make room by diminishing the
|
|
|
1400 // plotOffset; this first phase only looks at one
|
|
|
1401 // dimension per axis, the other dimension depends on the
|
|
|
1402 // other axes so will have to wait
|
|
|
1403
|
|
|
1404 var lw = axis.labelWidth,
|
|
|
1405 lh = axis.labelHeight,
|
|
|
1406 pos = axis.options.position,
|
|
|
1407 isXAxis = axis.direction === "x",
|
|
|
1408 tickLength = axis.options.tickLength,
|
|
|
1409 axisMargin = options.grid.axisMargin,
|
|
|
1410 padding = options.grid.labelMargin,
|
|
|
1411 innermost = true,
|
|
|
1412 outermost = true,
|
|
|
1413 first = true,
|
|
|
1414 found = false;
|
|
|
1415
|
|
|
1416 // Determine the axis's position in its direction and on its side
|
|
|
1417
|
|
|
1418 $.each(isXAxis ? xaxes : yaxes, function(i, a) {
|
|
|
1419 if (a && a.reserveSpace) {
|
|
|
1420 if (a === axis) {
|
|
|
1421 found = true;
|
|
|
1422 } else if (a.options.position === pos) {
|
|
|
1423 if (found) {
|
|
|
1424 outermost = false;
|
|
|
1425 } else {
|
|
|
1426 innermost = false;
|
|
|
1427 }
|
|
|
1428 }
|
|
|
1429 if (!found) {
|
|
|
1430 first = false;
|
|
|
1431 }
|
|
|
1432 }
|
|
|
1433 });
|
|
|
1434
|
|
|
1435 // The outermost axis on each side has no margin
|
|
|
1436
|
|
|
1437 if (outermost) {
|
|
|
1438 axisMargin = 0;
|
|
|
1439 }
|
|
|
1440
|
|
|
1441 // The ticks for the first axis in each direction stretch across
|
|
|
1442
|
|
|
1443 if (tickLength == null) {
|
|
|
1444 tickLength = first ? "full" : 5;
|
|
|
1445 }
|
|
|
1446
|
|
|
1447 if (!isNaN(+tickLength))
|
|
|
1448 padding += +tickLength;
|
|
|
1449
|
|
|
1450 if (isXAxis) {
|
|
|
1451 lh += padding;
|
|
|
1452
|
|
|
1453 if (pos == "bottom") {
|
|
|
1454 plotOffset.bottom += lh + axisMargin;
|
|
|
1455 axis.box = { top: surface.height - plotOffset.bottom, height: lh };
|
|
|
1456 }
|
|
|
1457 else {
|
|
|
1458 axis.box = { top: plotOffset.top + axisMargin, height: lh };
|
|
|
1459 plotOffset.top += lh + axisMargin;
|
|
|
1460 }
|
|
|
1461 }
|
|
|
1462 else {
|
|
|
1463 lw += padding;
|
|
|
1464
|
|
|
1465 if (pos == "left") {
|
|
|
1466 axis.box = { left: plotOffset.left + axisMargin, width: lw };
|
|
|
1467 plotOffset.left += lw + axisMargin;
|
|
|
1468 }
|
|
|
1469 else {
|
|
|
1470 plotOffset.right += lw + axisMargin;
|
|
|
1471 axis.box = { left: surface.width - plotOffset.right, width: lw };
|
|
|
1472 }
|
|
|
1473 }
|
|
|
1474
|
|
|
1475 // save for future reference
|
|
|
1476 axis.position = pos;
|
|
|
1477 axis.tickLength = tickLength;
|
|
|
1478 axis.box.padding = padding;
|
|
|
1479 axis.innermost = innermost;
|
|
|
1480 }
|
|
|
1481
|
|
|
1482 function allocateAxisBoxSecondPhase(axis) {
|
|
|
1483 // now that all axis boxes have been placed in one
|
|
|
1484 // dimension, we can set the remaining dimension coordinates
|
|
|
1485 if (axis.direction == "x") {
|
|
|
1486 axis.box.left = plotOffset.left - axis.labelWidth / 2;
|
|
|
1487 axis.box.width = surface.width - plotOffset.left - plotOffset.right + axis.labelWidth;
|
|
|
1488 }
|
|
|
1489 else {
|
|
|
1490 axis.box.top = plotOffset.top - axis.labelHeight / 2;
|
|
|
1491 axis.box.height = surface.height - plotOffset.bottom - plotOffset.top + axis.labelHeight;
|
|
|
1492 }
|
|
|
1493 }
|
|
|
1494
|
|
|
1495 function adjustLayoutForThingsStickingOut() {
|
|
|
1496 // possibly adjust plot offset to ensure everything stays
|
|
|
1497 // inside the canvas and isn't clipped off
|
|
|
1498
|
|
|
1499 var minMargin = options.grid.minBorderMargin,
|
|
|
1500 axis, i;
|
|
|
1501
|
|
|
1502 // check stuff from the plot (FIXME: this should just read
|
|
|
1503 // a value from the series, otherwise it's impossible to
|
|
|
1504 // customize)
|
|
|
1505 if (minMargin == null) {
|
|
|
1506 minMargin = 0;
|
|
|
1507 for (i = 0; i < series.length; ++i)
|
|
|
1508 minMargin = Math.max(minMargin, 2 * (series[i].points.radius + series[i].points.lineWidth/2));
|
|
|
1509 }
|
|
|
1510
|
|
|
1511 var margins = {
|
|
|
1512 left: minMargin,
|
|
|
1513 right: minMargin,
|
|
|
1514 top: minMargin,
|
|
|
1515 bottom: minMargin
|
|
|
1516 };
|
|
|
1517
|
|
|
1518 // check axis labels, note we don't check the actual
|
|
|
1519 // labels but instead use the overall width/height to not
|
|
|
1520 // jump as much around with replots
|
|
|
1521 $.each(allAxes(), function (_, axis) {
|
|
|
1522 if (axis.reserveSpace && axis.ticks && axis.ticks.length) {
|
|
|
1523 var lastTick = axis.ticks[axis.ticks.length - 1];
|
|
|
1524 if (axis.direction === "x") {
|
|
|
1525 margins.left = Math.max(margins.left, axis.labelWidth / 2);
|
|
|
1526 if (lastTick.v <= axis.max) {
|
|
|
1527 margins.right = Math.max(margins.right, axis.labelWidth / 2);
|
|
|
1528 }
|
|
|
1529 } else {
|
|
|
1530 margins.bottom = Math.max(margins.bottom, axis.labelHeight / 2);
|
|
|
1531 if (lastTick.v <= axis.max) {
|
|
|
1532 margins.top = Math.max(margins.top, axis.labelHeight / 2);
|
|
|
1533 }
|
|
|
1534 }
|
|
|
1535 }
|
|
|
1536 });
|
|
|
1537
|
|
|
1538 plotOffset.left = Math.ceil(Math.max(margins.left, plotOffset.left));
|
|
|
1539 plotOffset.right = Math.ceil(Math.max(margins.right, plotOffset.right));
|
|
|
1540 plotOffset.top = Math.ceil(Math.max(margins.top, plotOffset.top));
|
|
|
1541 plotOffset.bottom = Math.ceil(Math.max(margins.bottom, plotOffset.bottom));
|
|
|
1542 }
|
|
|
1543
|
|
|
1544 function setupGrid() {
|
|
|
1545 var i, axes = allAxes(), showGrid = options.grid.show;
|
|
|
1546
|
|
|
1547 // Initialize the plot's offset from the edge of the canvas
|
|
|
1548
|
|
|
1549 for (var a in plotOffset) {
|
|
|
1550 var margin = options.grid.margin || 0;
|
|
|
1551 plotOffset[a] = typeof margin == "number" ? margin : margin[a] || 0;
|
|
|
1552 }
|
|
|
1553
|
|
|
1554 executeHooks(hooks.processOffset, [plotOffset]);
|
|
|
1555
|
|
|
1556 // If the grid is visible, add its border width to the offset
|
|
|
1557
|
|
|
1558 for (var a in plotOffset) {
|
|
|
1559 if(typeof(options.grid.borderWidth) == "object") {
|
|
|
1560 plotOffset[a] += showGrid ? options.grid.borderWidth[a] : 0;
|
|
|
1561 }
|
|
|
1562 else {
|
|
|
1563 plotOffset[a] += showGrid ? options.grid.borderWidth : 0;
|
|
|
1564 }
|
|
|
1565 }
|
|
|
1566
|
|
|
1567 // init axes
|
|
|
1568 $.each(axes, function (_, axis) {
|
|
|
1569 axis.show = axis.options.show;
|
|
|
1570 if (axis.show == null)
|
|
|
1571 axis.show = axis.used; // by default an axis is visible if it's got data
|
|
|
1572
|
|
|
1573 axis.reserveSpace = axis.show || axis.options.reserveSpace;
|
|
|
1574
|
|
|
1575 setRange(axis);
|
|
|
1576 });
|
|
|
1577
|
|
|
1578 if (showGrid) {
|
|
|
1579
|
|
|
1580 var allocatedAxes = $.grep(axes, function (axis) { return axis.reserveSpace; });
|
|
|
1581
|
|
|
1582 $.each(allocatedAxes, function (_, axis) {
|
|
|
1583 // make the ticks
|
|
|
1584 setupTickGeneration(axis);
|
|
|
1585 setTicks(axis);
|
|
|
1586 snapRangeToTicks(axis, axis.ticks);
|
|
|
1587 // find labelWidth/Height for axis
|
|
|
1588 measureTickLabels(axis);
|
|
|
1589 });
|
|
|
1590
|
|
|
1591 // with all dimensions calculated, we can compute the
|
|
|
1592 // axis bounding boxes, start from the outside
|
|
|
1593 // (reverse order)
|
|
|
1594 for (i = allocatedAxes.length - 1; i >= 0; --i)
|
|
|
1595 allocateAxisBoxFirstPhase(allocatedAxes[i]);
|
|
|
1596
|
|
|
1597 // make sure we've got enough space for things that
|
|
|
1598 // might stick out
|
|
|
1599 adjustLayoutForThingsStickingOut();
|
|
|
1600
|
|
|
1601 $.each(allocatedAxes, function (_, axis) {
|
|
|
1602 allocateAxisBoxSecondPhase(axis);
|
|
|
1603 });
|
|
|
1604 }
|
|
|
1605
|
|
|
1606 plotWidth = surface.width - plotOffset.left - plotOffset.right;
|
|
|
1607 plotHeight = surface.height - plotOffset.bottom - plotOffset.top;
|
|
|
1608
|
|
|
1609 // now we got the proper plot dimensions, we can compute the scaling
|
|
|
1610 $.each(axes, function (_, axis) {
|
|
|
1611 setTransformationHelpers(axis);
|
|
|
1612 });
|
|
|
1613
|
|
|
1614 if (showGrid) {
|
|
|
1615 drawAxisLabels();
|
|
|
1616 }
|
|
|
1617
|
|
|
1618 insertLegend();
|
|
|
1619 }
|
|
|
1620
|
|
|
1621 function setRange(axis) {
|
|
|
1622 var opts = axis.options,
|
|
|
1623 min = +(opts.min != null ? opts.min : axis.datamin),
|
|
|
1624 max = +(opts.max != null ? opts.max : axis.datamax),
|
|
|
1625 delta = max - min;
|
|
|
1626
|
|
|
1627 if (delta == 0.0) {
|
|
|
1628 // degenerate case
|
|
|
1629 var widen = max == 0 ? 1 : 0.01;
|
|
|
1630
|
|
|
1631 if (opts.min == null)
|
|
|
1632 min -= widen;
|
|
|
1633 // always widen max if we couldn't widen min to ensure we
|
|
|
1634 // don't fall into min == max which doesn't work
|
|
|
1635 if (opts.max == null || opts.min != null)
|
|
|
1636 max += widen;
|
|
|
1637 }
|
|
|
1638 else {
|
|
|
1639 // consider autoscaling
|
|
|
1640 var margin = opts.autoscaleMargin;
|
|
|
1641 if (margin != null) {
|
|
|
1642 if (opts.min == null) {
|
|
|
1643 min -= delta * margin;
|
|
|
1644 // make sure we don't go below zero if all values
|
|
|
1645 // are positive
|
|
|
1646 if (min < 0 && axis.datamin != null && axis.datamin >= 0)
|
|
|
1647 min = 0;
|
|
|
1648 }
|
|
|
1649 if (opts.max == null) {
|
|
|
1650 max += delta * margin;
|
|
|
1651 if (max > 0 && axis.datamax != null && axis.datamax <= 0)
|
|
|
1652 max = 0;
|
|
|
1653 }
|
|
|
1654 }
|
|
|
1655 }
|
|
|
1656 axis.min = min;
|
|
|
1657 axis.max = max;
|
|
|
1658 }
|
|
|
1659
|
|
|
1660 function setupTickGeneration(axis) {
|
|
|
1661 var opts = axis.options;
|
|
|
1662
|
|
|
1663 // estimate number of ticks
|
|
|
1664 var noTicks;
|
|
|
1665 if (typeof opts.ticks == "number" && opts.ticks > 0)
|
|
|
1666 noTicks = opts.ticks;
|
|
|
1667 else
|
|
|
1668 // heuristic based on the model a*sqrt(x) fitted to
|
|
|
1669 // some data points that seemed reasonable
|
|
|
1670 noTicks = 0.3 * Math.sqrt(axis.direction == "x" ? surface.width : surface.height);
|
|
|
1671
|
|
|
1672 var delta = (axis.max - axis.min) / noTicks,
|
|
|
1673 dec = -Math.floor(Math.log(delta) / Math.LN10),
|
|
|
1674 maxDec = opts.tickDecimals;
|
|
|
1675
|
|
|
1676 if (maxDec != null && dec > maxDec) {
|
|
|
1677 dec = maxDec;
|
|
|
1678 }
|
|
|
1679
|
|
|
1680 var magn = Math.pow(10, -dec),
|
|
|
1681 norm = delta / magn, // norm is between 1.0 and 10.0
|
|
|
1682 size;
|
|
|
1683
|
|
|
1684 if (norm < 1.5) {
|
|
|
1685 size = 1;
|
|
|
1686 } else if (norm < 3) {
|
|
|
1687 size = 2;
|
|
|
1688 // special case for 2.5, requires an extra decimal
|
|
|
1689 if (norm > 2.25 && (maxDec == null || dec + 1 <= maxDec)) {
|
|
|
1690 size = 2.5;
|
|
|
1691 ++dec;
|
|
|
1692 }
|
|
|
1693 } else if (norm < 7.5) {
|
|
|
1694 size = 5;
|
|
|
1695 } else {
|
|
|
1696 size = 10;
|
|
|
1697 }
|
|
|
1698
|
|
|
1699 size *= magn;
|
|
|
1700
|
|
|
1701 if (opts.minTickSize != null && size < opts.minTickSize) {
|
|
|
1702 size = opts.minTickSize;
|
|
|
1703 }
|
|
|
1704
|
|
|
1705 axis.delta = delta;
|
|
|
1706 axis.tickDecimals = Math.max(0, maxDec != null ? maxDec : dec);
|
|
|
1707 axis.tickSize = opts.tickSize || size;
|
|
|
1708
|
|
|
1709 // Time mode was moved to a plug-in in 0.8, and since so many people use it
|
|
|
1710 // we'll add an especially friendly reminder to make sure they included it.
|
|
|
1711
|
|
|
1712 if (opts.mode == "time" && !axis.tickGenerator) {
|
|
|
1713 throw new Error("Time mode requires the flot.time plugin.");
|
|
|
1714 }
|
|
|
1715
|
|
|
1716 // Flot supports base-10 axes; any other mode else is handled by a plug-in,
|
|
|
1717 // like flot.time.js.
|
|
|
1718
|
|
|
1719 if (!axis.tickGenerator) {
|
|
|
1720
|
|
|
1721 axis.tickGenerator = function (axis) {
|
|
|
1722
|
|
|
1723 var ticks = [],
|
|
|
1724 start = floorInBase(axis.min, axis.tickSize),
|
|
|
1725 i = 0,
|
|
|
1726 v = Number.NaN,
|
|
|
1727 prev;
|
|
|
1728
|
|
|
1729 do {
|
|
|
1730 prev = v;
|
|
|
1731 v = start + i * axis.tickSize;
|
|
|
1732 ticks.push(v);
|
|
|
1733 ++i;
|
|
|
1734 } while (v < axis.max && v != prev);
|
|
|
1735 return ticks;
|
|
|
1736 };
|
|
|
1737
|
|
|
1738 axis.tickFormatter = function (value, axis) {
|
|
|
1739
|
|
|
1740 var factor = axis.tickDecimals ? Math.pow(10, axis.tickDecimals) : 1;
|
|
|
1741 var formatted = "" + Math.round(value * factor) / factor;
|
|
|
1742
|
|
|
1743 // If tickDecimals was specified, ensure that we have exactly that
|
|
|
1744 // much precision; otherwise default to the value's own precision.
|
|
|
1745
|
|
|
1746 if (axis.tickDecimals != null) {
|
|
|
1747 var decimal = formatted.indexOf(".");
|
|
|
1748 var precision = decimal == -1 ? 0 : formatted.length - decimal - 1;
|
|
|
1749 if (precision < axis.tickDecimals) {
|
|
|
1750 return (precision ? formatted : formatted + ".") + ("" + factor).substr(1, axis.tickDecimals - precision);
|
|
|
1751 }
|
|
|
1752 }
|
|
|
1753
|
|
|
1754 return formatted;
|
|
|
1755 };
|
|
|
1756 }
|
|
|
1757
|
|
|
1758 if ($.isFunction(opts.tickFormatter))
|
|
|
1759 axis.tickFormatter = function (v, axis) { return "" + opts.tickFormatter(v, axis); };
|
|
|
1760
|
|
|
1761 if (opts.alignTicksWithAxis != null) {
|
|
|
1762 var otherAxis = (axis.direction == "x" ? xaxes : yaxes)[opts.alignTicksWithAxis - 1];
|
|
|
1763 if (otherAxis && otherAxis.used && otherAxis != axis) {
|
|
|
1764 // consider snapping min/max to outermost nice ticks
|
|
|
1765 var niceTicks = axis.tickGenerator(axis);
|
|
|
1766 if (niceTicks.length > 0) {
|
|
|
1767 if (opts.min == null)
|
|
|
1768 axis.min = Math.min(axis.min, niceTicks[0]);
|
|
|
1769 if (opts.max == null && niceTicks.length > 1)
|
|
|
1770 axis.max = Math.max(axis.max, niceTicks[niceTicks.length - 1]);
|
|
|
1771 }
|
|
|
1772
|
|
|
1773 axis.tickGenerator = function (axis) {
|
|
|
1774 // copy ticks, scaled to this axis
|
|
|
1775 var ticks = [], v, i;
|
|
|
1776 for (i = 0; i < otherAxis.ticks.length; ++i) {
|
|
|
1777 v = (otherAxis.ticks[i].v - otherAxis.min) / (otherAxis.max - otherAxis.min);
|
|
|
1778 v = axis.min + v * (axis.max - axis.min);
|
|
|
1779 ticks.push(v);
|
|
|
1780 }
|
|
|
1781 return ticks;
|
|
|
1782 };
|
|
|
1783
|
|
|
1784 // we might need an extra decimal since forced
|
|
|
1785 // ticks don't necessarily fit naturally
|
|
|
1786 if (!axis.mode && opts.tickDecimals == null) {
|
|
|
1787 var extraDec = Math.max(0, -Math.floor(Math.log(axis.delta) / Math.LN10) + 1),
|
|
|
1788 ts = axis.tickGenerator(axis);
|
|
|
1789
|
|
|
1790 // only proceed if the tick interval rounded
|
|
|
1791 // with an extra decimal doesn't give us a
|
|
|
1792 // zero at end
|
|
|
1793 if (!(ts.length > 1 && /\..*0$/.test((ts[1] - ts[0]).toFixed(extraDec))))
|
|
|
1794 axis.tickDecimals = extraDec;
|
|
|
1795 }
|
|
|
1796 }
|
|
|
1797 }
|
|
|
1798 }
|
|
|
1799
|
|
|
1800 function setTicks(axis) {
|
|
|
1801 var oticks = axis.options.ticks, ticks = [];
|
|
|
1802 if (oticks == null || (typeof oticks == "number" && oticks > 0))
|
|
|
1803 ticks = axis.tickGenerator(axis);
|
|
|
1804 else if (oticks) {
|
|
|
1805 if ($.isFunction(oticks))
|
|
|
1806 // generate the ticks
|
|
|
1807 ticks = oticks(axis);
|
|
|
1808 else
|
|
|
1809 ticks = oticks;
|
|
|
1810 }
|
|
|
1811
|
|
|
1812 // clean up/labelify the supplied ticks, copy them over
|
|
|
1813 var i, v;
|
|
|
1814 axis.ticks = [];
|
|
|
1815 for (i = 0; i < ticks.length; ++i) {
|
|
|
1816 var label = null;
|
|
|
1817 var t = ticks[i];
|
|
|
1818 if (typeof t == "object") {
|
|
|
1819 v = +t[0];
|
|
|
1820 if (t.length > 1)
|
|
|
1821 label = t[1];
|
|
|
1822 }
|
|
|
1823 else
|
|
|
1824 v = +t;
|
|
|
1825 if (label == null)
|
|
|
1826 label = axis.tickFormatter(v, axis);
|
|
|
1827 if (!isNaN(v))
|
|
|
1828 axis.ticks.push({ v: v, label: label });
|
|
|
1829 }
|
|
|
1830 }
|
|
|
1831
|
|
|
1832 function snapRangeToTicks(axis, ticks) {
|
|
|
1833 if (axis.options.autoscaleMargin && ticks.length > 0) {
|
|
|
1834 // snap to ticks
|
|
|
1835 if (axis.options.min == null)
|
|
|
1836 axis.min = Math.min(axis.min, ticks[0].v);
|
|
|
1837 if (axis.options.max == null && ticks.length > 1)
|
|
|
1838 axis.max = Math.max(axis.max, ticks[ticks.length - 1].v);
|
|
|
1839 }
|
|
|
1840 }
|
|
|
1841
|
|
|
1842 function draw() {
|
|
|
1843
|
|
|
1844 surface.clear();
|
|
|
1845
|
|
|
1846 executeHooks(hooks.drawBackground, [ctx]);
|
|
|
1847
|
|
|
1848 var grid = options.grid;
|
|
|
1849
|
|
|
1850 // draw background, if any
|
|
|
1851 if (grid.show && grid.backgroundColor)
|
|
|
1852 drawBackground();
|
|
|
1853
|
|
|
1854 if (grid.show && !grid.aboveData) {
|
|
|
1855 drawGrid();
|
|
|
1856 }
|
|
|
1857
|
|
|
1858 for (var i = 0; i < series.length; ++i) {
|
|
|
1859 executeHooks(hooks.drawSeries, [ctx, series[i]]);
|
|
|
1860 drawSeries(series[i]);
|
|
|
1861 }
|
|
|
1862
|
|
|
1863 executeHooks(hooks.draw, [ctx]);
|
|
|
1864
|
|
|
1865 if (grid.show && grid.aboveData) {
|
|
|
1866 drawGrid();
|
|
|
1867 }
|
|
|
1868
|
|
|
1869 surface.render();
|
|
|
1870
|
|
|
1871 // A draw implies that either the axes or data have changed, so we
|
|
|
1872 // should probably update the overlay highlights as well.
|
|
|
1873
|
|
|
1874 triggerRedrawOverlay();
|
|
|
1875 }
|
|
|
1876
|
|
|
1877 function extractRange(ranges, coord) {
|
|
|
1878 var axis, from, to, key, axes = allAxes();
|
|
|
1879
|
|
|
1880 for (var i = 0; i < axes.length; ++i) {
|
|
|
1881 axis = axes[i];
|
|
|
1882 if (axis.direction == coord) {
|
|
|
1883 key = coord + axis.n + "axis";
|
|
|
1884 if (!ranges[key] && axis.n == 1)
|
|
|
1885 key = coord + "axis"; // support x1axis as xaxis
|
|
|
1886 if (ranges[key]) {
|
|
|
1887 from = ranges[key].from;
|
|
|
1888 to = ranges[key].to;
|
|
|
1889 break;
|
|
|
1890 }
|
|
|
1891 }
|
|
|
1892 }
|
|
|
1893
|
|
|
1894 // backwards-compat stuff - to be removed in future
|
|
|
1895 if (!ranges[key]) {
|
|
|
1896 axis = coord == "x" ? xaxes[0] : yaxes[0];
|
|
|
1897 from = ranges[coord + "1"];
|
|
|
1898 to = ranges[coord + "2"];
|
|
|
1899 }
|
|
|
1900
|
|
|
1901 // auto-reverse as an added bonus
|
|
|
1902 if (from != null && to != null && from > to) {
|
|
|
1903 var tmp = from;
|
|
|
1904 from = to;
|
|
|
1905 to = tmp;
|
|
|
1906 }
|
|
|
1907
|
|
|
1908 return { from: from, to: to, axis: axis };
|
|
|
1909 }
|
|
|
1910
|
|
|
1911 function drawBackground() {
|
|
|
1912 ctx.save();
|
|
|
1913 ctx.translate(plotOffset.left, plotOffset.top);
|
|
|
1914
|
|
|
1915 ctx.fillStyle = getColorOrGradient(options.grid.backgroundColor, plotHeight, 0, "rgba(255, 255, 255, 0)");
|
|
|
1916 ctx.fillRect(0, 0, plotWidth, plotHeight);
|
|
|
1917 ctx.restore();
|
|
|
1918 }
|
|
|
1919
|
|
|
1920 function drawGrid() {
|
|
|
1921 var i, axes, bw, bc;
|
|
|
1922
|
|
|
1923 ctx.save();
|
|
|
1924 ctx.translate(plotOffset.left, plotOffset.top);
|
|
|
1925
|
|
|
1926 // draw markings
|
|
|
1927 var markings = options.grid.markings;
|
|
|
1928 if (markings) {
|
|
|
1929 if ($.isFunction(markings)) {
|
|
|
1930 axes = plot.getAxes();
|
|
|
1931 // xmin etc. is backwards compatibility, to be
|
|
|
1932 // removed in the future
|
|
|
1933 axes.xmin = axes.xaxis.min;
|
|
|
1934 axes.xmax = axes.xaxis.max;
|
|
|
1935 axes.ymin = axes.yaxis.min;
|
|
|
1936 axes.ymax = axes.yaxis.max;
|
|
|
1937
|
|
|
1938 markings = markings(axes);
|
|
|
1939 }
|
|
|
1940
|
|
|
1941 for (i = 0; i < markings.length; ++i) {
|
|
|
1942 var m = markings[i],
|
|
|
1943 xrange = extractRange(m, "x"),
|
|
|
1944 yrange = extractRange(m, "y");
|
|
|
1945
|
|
|
1946 // fill in missing
|
|
|
1947 if (xrange.from == null)
|
|
|
1948 xrange.from = xrange.axis.min;
|
|
|
1949 if (xrange.to == null)
|
|
|
1950 xrange.to = xrange.axis.max;
|
|
|
1951 if (yrange.from == null)
|
|
|
1952 yrange.from = yrange.axis.min;
|
|
|
1953 if (yrange.to == null)
|
|
|
1954 yrange.to = yrange.axis.max;
|
|
|
1955
|
|
|
1956 // clip
|
|
|
1957 if (xrange.to < xrange.axis.min || xrange.from > xrange.axis.max ||
|
|
|
1958 yrange.to < yrange.axis.min || yrange.from > yrange.axis.max)
|
|
|
1959 continue;
|
|
|
1960
|
|
|
1961 xrange.from = Math.max(xrange.from, xrange.axis.min);
|
|
|
1962 xrange.to = Math.min(xrange.to, xrange.axis.max);
|
|
|
1963 yrange.from = Math.max(yrange.from, yrange.axis.min);
|
|
|
1964 yrange.to = Math.min(yrange.to, yrange.axis.max);
|
|
|
1965
|
|
|
1966 var xequal = xrange.from === xrange.to,
|
|
|
1967 yequal = yrange.from === yrange.to;
|
|
|
1968
|
|
|
1969 if (xequal && yequal) {
|
|
|
1970 continue;
|
|
|
1971 }
|
|
|
1972
|
|
|
1973 // then draw
|
|
|
1974 xrange.from = Math.floor(xrange.axis.p2c(xrange.from));
|
|
|
1975 xrange.to = Math.floor(xrange.axis.p2c(xrange.to));
|
|
|
1976 yrange.from = Math.floor(yrange.axis.p2c(yrange.from));
|
|
|
1977 yrange.to = Math.floor(yrange.axis.p2c(yrange.to));
|
|
|
1978
|
|
|
1979 if (xequal || yequal) {
|
|
|
1980 var lineWidth = m.lineWidth || options.grid.markingsLineWidth,
|
|
|
1981 subPixel = lineWidth % 2 ? 0.5 : 0;
|
|
|
1982 ctx.beginPath();
|
|
|
1983 ctx.strokeStyle = m.color || options.grid.markingsColor;
|
|
|
1984 ctx.lineWidth = lineWidth;
|
|
|
1985 if (xequal) {
|
|
|
1986 ctx.moveTo(xrange.to + subPixel, yrange.from);
|
|
|
1987 ctx.lineTo(xrange.to + subPixel, yrange.to);
|
|
|
1988 } else {
|
|
|
1989 ctx.moveTo(xrange.from, yrange.to + subPixel);
|
|
|
1990 ctx.lineTo(xrange.to, yrange.to + subPixel);
|
|
|
1991 }
|
|
|
1992 ctx.stroke();
|
|
|
1993 } else {
|
|
|
1994 ctx.fillStyle = m.color || options.grid.markingsColor;
|
|
|
1995 ctx.fillRect(xrange.from, yrange.to,
|
|
|
1996 xrange.to - xrange.from,
|
|
|
1997 yrange.from - yrange.to);
|
|
|
1998 }
|
|
|
1999 }
|
|
|
2000 }
|
|
|
2001
|
|
|
2002 // draw the ticks
|
|
|
2003 axes = allAxes();
|
|
|
2004 bw = options.grid.borderWidth;
|
|
|
2005
|
|
|
2006 for (var j = 0; j < axes.length; ++j) {
|
|
|
2007 var axis = axes[j], box = axis.box,
|
|
|
2008 t = axis.tickLength, x, y, xoff, yoff;
|
|
|
2009 if (!axis.show || axis.ticks.length == 0)
|
|
|
2010 continue;
|
|
|
2011
|
|
|
2012 ctx.lineWidth = 1;
|
|
|
2013
|
|
|
2014 // find the edges
|
|
|
2015 if (axis.direction == "x") {
|
|
|
2016 x = 0;
|
|
|
2017 if (t == "full")
|
|
|
2018 y = (axis.position == "top" ? 0 : plotHeight);
|
|
|
2019 else
|
|
|
2020 y = box.top - plotOffset.top + (axis.position == "top" ? box.height : 0);
|
|
|
2021 }
|
|
|
2022 else {
|
|
|
2023 y = 0;
|
|
|
2024 if (t == "full")
|
|
|
2025 x = (axis.position == "left" ? 0 : plotWidth);
|
|
|
2026 else
|
|
|
2027 x = box.left - plotOffset.left + (axis.position == "left" ? box.width : 0);
|
|
|
2028 }
|
|
|
2029
|
|
|
2030 // draw tick bar
|
|
|
2031 if (!axis.innermost) {
|
|
|
2032 ctx.strokeStyle = axis.options.color;
|
|
|
2033 ctx.beginPath();
|
|
|
2034 xoff = yoff = 0;
|
|
|
2035 if (axis.direction == "x")
|
|
|
2036 xoff = plotWidth + 1;
|
|
|
2037 else
|
|
|
2038 yoff = plotHeight + 1;
|
|
|
2039
|
|
|
2040 if (ctx.lineWidth == 1) {
|
|
|
2041 if (axis.direction == "x") {
|
|
|
2042 y = Math.floor(y) + 0.5;
|
|
|
2043 } else {
|
|
|
2044 x = Math.floor(x) + 0.5;
|
|
|
2045 }
|
|
|
2046 }
|
|
|
2047
|
|
|
2048 ctx.moveTo(x, y);
|
|
|
2049 ctx.lineTo(x + xoff, y + yoff);
|
|
|
2050 ctx.stroke();
|
|
|
2051 }
|
|
|
2052
|
|
|
2053 // draw ticks
|
|
|
2054
|
|
|
2055 ctx.strokeStyle = axis.options.tickColor;
|
|
|
2056
|
|
|
2057 ctx.beginPath();
|
|
|
2058 for (i = 0; i < axis.ticks.length; ++i) {
|
|
|
2059 var v = axis.ticks[i].v;
|
|
|
2060
|
|
|
2061 xoff = yoff = 0;
|
|
|
2062
|
|
|
2063 if (isNaN(v) || v < axis.min || v > axis.max
|
|
|
2064 // skip those lying on the axes if we got a border
|
|
|
2065 || (t == "full"
|
|
|
2066 && ((typeof bw == "object" && bw[axis.position] > 0) || bw > 0)
|
|
|
2067 && (v == axis.min || v == axis.max)))
|
|
|
2068 continue;
|
|
|
2069
|
|
|
2070 if (axis.direction == "x") {
|
|
|
2071 x = axis.p2c(v);
|
|
|
2072 yoff = t == "full" ? -plotHeight : t;
|
|
|
2073
|
|
|
2074 if (axis.position == "top")
|
|
|
2075 yoff = -yoff;
|
|
|
2076 }
|
|
|
2077 else {
|
|
|
2078 y = axis.p2c(v);
|
|
|
2079 xoff = t == "full" ? -plotWidth : t;
|
|
|
2080
|
|
|
2081 if (axis.position == "left")
|
|
|
2082 xoff = -xoff;
|
|
|
2083 }
|
|
|
2084
|
|
|
2085 if (ctx.lineWidth == 1) {
|
|
|
2086 if (axis.direction == "x")
|
|
|
2087 x = Math.floor(x) + 0.5;
|
|
|
2088 else
|
|
|
2089 y = Math.floor(y) + 0.5;
|
|
|
2090 }
|
|
|
2091
|
|
|
2092 ctx.moveTo(x, y);
|
|
|
2093 ctx.lineTo(x + xoff, y + yoff);
|
|
|
2094 }
|
|
|
2095
|
|
|
2096 ctx.stroke();
|
|
|
2097 }
|
|
|
2098
|
|
|
2099
|
|
|
2100 // draw border
|
|
|
2101 if (bw) {
|
|
|
2102 // If either borderWidth or borderColor is an object, then draw the border
|
|
|
2103 // line by line instead of as one rectangle
|
|
|
2104 bc = options.grid.borderColor;
|
|
|
2105 if(typeof bw == "object" || typeof bc == "object") {
|
|
|
2106 if (typeof bw !== "object") {
|
|
|
2107 bw = {top: bw, right: bw, bottom: bw, left: bw};
|
|
|
2108 }
|
|
|
2109 if (typeof bc !== "object") {
|
|
|
2110 bc = {top: bc, right: bc, bottom: bc, left: bc};
|
|
|
2111 }
|
|
|
2112
|
|
|
2113 if (bw.top > 0) {
|
|
|
2114 ctx.strokeStyle = bc.top;
|
|
|
2115 ctx.lineWidth = bw.top;
|
|
|
2116 ctx.beginPath();
|
|
|
2117 ctx.moveTo(0 - bw.left, 0 - bw.top/2);
|
|
|
2118 ctx.lineTo(plotWidth, 0 - bw.top/2);
|
|
|
2119 ctx.stroke();
|
|
|
2120 }
|
|
|
2121
|
|
|
2122 if (bw.right > 0) {
|
|
|
2123 ctx.strokeStyle = bc.right;
|
|
|
2124 ctx.lineWidth = bw.right;
|
|
|
2125 ctx.beginPath();
|
|
|
2126 ctx.moveTo(plotWidth + bw.right / 2, 0 - bw.top);
|
|
|
2127 ctx.lineTo(plotWidth + bw.right / 2, plotHeight);
|
|
|
2128 ctx.stroke();
|
|
|
2129 }
|
|
|
2130
|
|
|
2131 if (bw.bottom > 0) {
|
|
|
2132 ctx.strokeStyle = bc.bottom;
|
|
|
2133 ctx.lineWidth = bw.bottom;
|
|
|
2134 ctx.beginPath();
|
|
|
2135 ctx.moveTo(plotWidth + bw.right, plotHeight + bw.bottom / 2);
|
|
|
2136 ctx.lineTo(0, plotHeight + bw.bottom / 2);
|
|
|
2137 ctx.stroke();
|
|
|
2138 }
|
|
|
2139
|
|
|
2140 if (bw.left > 0) {
|
|
|
2141 ctx.strokeStyle = bc.left;
|
|
|
2142 ctx.lineWidth = bw.left;
|
|
|
2143 ctx.beginPath();
|
|
|
2144 ctx.moveTo(0 - bw.left/2, plotHeight + bw.bottom);
|
|
|
2145 ctx.lineTo(0- bw.left/2, 0);
|
|
|
2146 ctx.stroke();
|
|
|
2147 }
|
|
|
2148 }
|
|
|
2149 else {
|
|
|
2150 ctx.lineWidth = bw;
|
|
|
2151 ctx.strokeStyle = options.grid.borderColor;
|
|
|
2152 ctx.strokeRect(-bw/2, -bw/2, plotWidth + bw, plotHeight + bw);
|
|
|
2153 }
|
|
|
2154 }
|
|
|
2155
|
|
|
2156 ctx.restore();
|
|
|
2157 }
|
|
|
2158
|
|
|
2159 function drawAxisLabels() {
|
|
|
2160
|
|
|
2161 $.each(allAxes(), function (_, axis) {
|
|
|
2162 var box = axis.box,
|
|
|
2163 legacyStyles = axis.direction + "Axis " + axis.direction + axis.n + "Axis",
|
|
|
2164 layer = "flot-" + axis.direction + "-axis flot-" + axis.direction + axis.n + "-axis " + legacyStyles,
|
|
|
2165 font = axis.options.font || "flot-tick-label tickLabel",
|
|
|
2166 tick, x, y, halign, valign;
|
|
|
2167
|
|
|
2168 // Remove text before checking for axis.show and ticks.length;
|
|
|
2169 // otherwise plugins, like flot-tickrotor, that draw their own
|
|
|
2170 // tick labels will end up with both theirs and the defaults.
|
|
|
2171
|
|
|
2172 surface.removeText(layer);
|
|
|
2173
|
|
|
2174 if (!axis.show || axis.ticks.length == 0)
|
|
|
2175 return;
|
|
|
2176
|
|
|
2177 for (var i = 0; i < axis.ticks.length; ++i) {
|
|
|
2178
|
|
|
2179 tick = axis.ticks[i];
|
|
|
2180 if (!tick.label || tick.v < axis.min || tick.v > axis.max)
|
|
|
2181 continue;
|
|
|
2182
|
|
|
2183 if (axis.direction == "x") {
|
|
|
2184 halign = "center";
|
|
|
2185 x = plotOffset.left + axis.p2c(tick.v);
|
|
|
2186 if (axis.position == "bottom") {
|
|
|
2187 y = box.top + box.padding;
|
|
|
2188 } else {
|
|
|
2189 y = box.top + box.height - box.padding;
|
|
|
2190 valign = "bottom";
|
|
|
2191 }
|
|
|
2192 } else {
|
|
|
2193 valign = "middle";
|
|
|
2194 y = plotOffset.top + axis.p2c(tick.v);
|
|
|
2195 if (axis.position == "left") {
|
|
|
2196 x = box.left + box.width - box.padding;
|
|
|
2197 halign = "right";
|
|
|
2198 } else {
|
|
|
2199 x = box.left + box.padding;
|
|
|
2200 }
|
|
|
2201 }
|
|
|
2202
|
|
|
2203 surface.addText(layer, x, y, tick.label, font, null, null, halign, valign);
|
|
|
2204 }
|
|
|
2205 });
|
|
|
2206 }
|
|
|
2207
|
|
|
2208 function drawSeries(series) {
|
|
|
2209 if (series.lines.show)
|
|
|
2210 drawSeriesLines(series);
|
|
|
2211 if (series.bars.show)
|
|
|
2212 drawSeriesBars(series);
|
|
|
2213 if (series.points.show)
|
|
|
2214 drawSeriesPoints(series);
|
|
|
2215 }
|
|
|
2216
|
|
|
2217 function drawSeriesLines(series) {
|
|
|
2218 function plotLine(datapoints, xoffset, yoffset, axisx, axisy) {
|
|
|
2219 var points = datapoints.points,
|
|
|
2220 ps = datapoints.pointsize,
|
|
|
2221 prevx = null, prevy = null;
|
|
|
2222
|
|
|
2223 ctx.beginPath();
|
|
|
2224 for (var i = ps; i < points.length; i += ps) {
|
|
|
2225 var x1 = points[i - ps], y1 = points[i - ps + 1],
|
|
|
2226 x2 = points[i], y2 = points[i + 1];
|
|
|
2227
|
|
|
2228 if (x1 == null || x2 == null)
|
|
|
2229 continue;
|
|
|
2230
|
|
|
2231 // clip with ymin
|
|
|
2232 if (y1 <= y2 && y1 < axisy.min) {
|
|
|
2233 if (y2 < axisy.min)
|
|
|
2234 continue; // line segment is outside
|
|
|
2235 // compute new intersection point
|
|
|
2236 x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
|
|
|
2237 y1 = axisy.min;
|
|
|
2238 }
|
|
|
2239 else if (y2 <= y1 && y2 < axisy.min) {
|
|
|
2240 if (y1 < axisy.min)
|
|
|
2241 continue;
|
|
|
2242 x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
|
|
|
2243 y2 = axisy.min;
|
|
|
2244 }
|
|
|
2245
|
|
|
2246 // clip with ymax
|
|
|
2247 if (y1 >= y2 && y1 > axisy.max) {
|
|
|
2248 if (y2 > axisy.max)
|
|
|
2249 continue;
|
|
|
2250 x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
|
|
|
2251 y1 = axisy.max;
|
|
|
2252 }
|
|
|
2253 else if (y2 >= y1 && y2 > axisy.max) {
|
|
|
2254 if (y1 > axisy.max)
|
|
|
2255 continue;
|
|
|
2256 x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
|
|
|
2257 y2 = axisy.max;
|
|
|
2258 }
|
|
|
2259
|
|
|
2260 // clip with xmin
|
|
|
2261 if (x1 <= x2 && x1 < axisx.min) {
|
|
|
2262 if (x2 < axisx.min)
|
|
|
2263 continue;
|
|
|
2264 y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
|
|
|
2265 x1 = axisx.min;
|
|
|
2266 }
|
|
|
2267 else if (x2 <= x1 && x2 < axisx.min) {
|
|
|
2268 if (x1 < axisx.min)
|
|
|
2269 continue;
|
|
|
2270 y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
|
|
|
2271 x2 = axisx.min;
|
|
|
2272 }
|
|
|
2273
|
|
|
2274 // clip with xmax
|
|
|
2275 if (x1 >= x2 && x1 > axisx.max) {
|
|
|
2276 if (x2 > axisx.max)
|
|
|
2277 continue;
|
|
|
2278 y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
|
|
|
2279 x1 = axisx.max;
|
|
|
2280 }
|
|
|
2281 else if (x2 >= x1 && x2 > axisx.max) {
|
|
|
2282 if (x1 > axisx.max)
|
|
|
2283 continue;
|
|
|
2284 y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
|
|
|
2285 x2 = axisx.max;
|
|
|
2286 }
|
|
|
2287
|
|
|
2288 if (x1 != prevx || y1 != prevy)
|
|
|
2289 ctx.moveTo(axisx.p2c(x1) + xoffset, axisy.p2c(y1) + yoffset);
|
|
|
2290
|
|
|
2291 prevx = x2;
|
|
|
2292 prevy = y2;
|
|
|
2293 ctx.lineTo(axisx.p2c(x2) + xoffset, axisy.p2c(y2) + yoffset);
|
|
|
2294 }
|
|
|
2295 ctx.stroke();
|
|
|
2296 }
|
|
|
2297
|
|
|
2298 function plotLineArea(datapoints, axisx, axisy) {
|
|
|
2299 var points = datapoints.points,
|
|
|
2300 ps = datapoints.pointsize,
|
|
|
2301 bottom = Math.min(Math.max(0, axisy.min), axisy.max),
|
|
|
2302 i = 0, top, areaOpen = false,
|
|
|
2303 ypos = 1, segmentStart = 0, segmentEnd = 0;
|
|
|
2304
|
|
|
2305 // we process each segment in two turns, first forward
|
|
|
2306 // direction to sketch out top, then once we hit the
|
|
|
2307 // end we go backwards to sketch the bottom
|
|
|
2308 while (true) {
|
|
|
2309 if (ps > 0 && i > points.length + ps)
|
|
|
2310 break;
|
|
|
2311
|
|
|
2312 i += ps; // ps is negative if going backwards
|
|
|
2313
|
|
|
2314 var x1 = points[i - ps],
|
|
|
2315 y1 = points[i - ps + ypos],
|
|
|
2316 x2 = points[i], y2 = points[i + ypos];
|
|
|
2317
|
|
|
2318 if (areaOpen) {
|
|
|
2319 if (ps > 0 && x1 != null && x2 == null) {
|
|
|
2320 // at turning point
|
|
|
2321 segmentEnd = i;
|
|
|
2322 ps = -ps;
|
|
|
2323 ypos = 2;
|
|
|
2324 continue;
|
|
|
2325 }
|
|
|
2326
|
|
|
2327 if (ps < 0 && i == segmentStart + ps) {
|
|
|
2328 // done with the reverse sweep
|
|
|
2329 ctx.fill();
|
|
|
2330 areaOpen = false;
|
|
|
2331 ps = -ps;
|
|
|
2332 ypos = 1;
|
|
|
2333 i = segmentStart = segmentEnd + ps;
|
|
|
2334 continue;
|
|
|
2335 }
|
|
|
2336 }
|
|
|
2337
|
|
|
2338 if (x1 == null || x2 == null)
|
|
|
2339 continue;
|
|
|
2340
|
|
|
2341 // clip x values
|
|
|
2342
|
|
|
2343 // clip with xmin
|
|
|
2344 if (x1 <= x2 && x1 < axisx.min) {
|
|
|
2345 if (x2 < axisx.min)
|
|
|
2346 continue;
|
|
|
2347 y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
|
|
|
2348 x1 = axisx.min;
|
|
|
2349 }
|
|
|
2350 else if (x2 <= x1 && x2 < axisx.min) {
|
|
|
2351 if (x1 < axisx.min)
|
|
|
2352 continue;
|
|
|
2353 y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
|
|
|
2354 x2 = axisx.min;
|
|
|
2355 }
|
|
|
2356
|
|
|
2357 // clip with xmax
|
|
|
2358 if (x1 >= x2 && x1 > axisx.max) {
|
|
|
2359 if (x2 > axisx.max)
|
|
|
2360 continue;
|
|
|
2361 y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
|
|
|
2362 x1 = axisx.max;
|
|
|
2363 }
|
|
|
2364 else if (x2 >= x1 && x2 > axisx.max) {
|
|
|
2365 if (x1 > axisx.max)
|
|
|
2366 continue;
|
|
|
2367 y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
|
|
|
2368 x2 = axisx.max;
|
|
|
2369 }
|
|
|
2370
|
|
|
2371 if (!areaOpen) {
|
|
|
2372 // open area
|
|
|
2373 ctx.beginPath();
|
|
|
2374 ctx.moveTo(axisx.p2c(x1), axisy.p2c(bottom));
|
|
|
2375 areaOpen = true;
|
|
|
2376 }
|
|
|
2377
|
|
|
2378 // now first check the case where both is outside
|
|
|
2379 if (y1 >= axisy.max && y2 >= axisy.max) {
|
|
|
2380 ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.max));
|
|
|
2381 ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.max));
|
|
|
2382 continue;
|
|
|
2383 }
|
|
|
2384 else if (y1 <= axisy.min && y2 <= axisy.min) {
|
|
|
2385 ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.min));
|
|
|
2386 ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.min));
|
|
|
2387 continue;
|
|
|
2388 }
|
|
|
2389
|
|
|
2390 // else it's a bit more complicated, there might
|
|
|
2391 // be a flat maxed out rectangle first, then a
|
|
|
2392 // triangular cutout or reverse; to find these
|
|
|
2393 // keep track of the current x values
|
|
|
2394 var x1old = x1, x2old = x2;
|
|
|
2395
|
|
|
2396 // clip the y values, without shortcutting, we
|
|
|
2397 // go through all cases in turn
|
|
|
2398
|
|
|
2399 // clip with ymin
|
|
|
2400 if (y1 <= y2 && y1 < axisy.min && y2 >= axisy.min) {
|
|
|
2401 x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
|
|
|
2402 y1 = axisy.min;
|
|
|
2403 }
|
|
|
2404 else if (y2 <= y1 && y2 < axisy.min && y1 >= axisy.min) {
|
|
|
2405 x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
|
|
|
2406 y2 = axisy.min;
|
|
|
2407 }
|
|
|
2408
|
|
|
2409 // clip with ymax
|
|
|
2410 if (y1 >= y2 && y1 > axisy.max && y2 <= axisy.max) {
|
|
|
2411 x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
|
|
|
2412 y1 = axisy.max;
|
|
|
2413 }
|
|
|
2414 else if (y2 >= y1 && y2 > axisy.max && y1 <= axisy.max) {
|
|
|
2415 x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
|
|
|
2416 y2 = axisy.max;
|
|
|
2417 }
|
|
|
2418
|
|
|
2419 // if the x value was changed we got a rectangle
|
|
|
2420 // to fill
|
|
|
2421 if (x1 != x1old) {
|
|
|
2422 ctx.lineTo(axisx.p2c(x1old), axisy.p2c(y1));
|
|
|
2423 // it goes to (x1, y1), but we fill that below
|
|
|
2424 }
|
|
|
2425
|
|
|
2426 // fill triangular section, this sometimes result
|
|
|
2427 // in redundant points if (x1, y1) hasn't changed
|
|
|
2428 // from previous line to, but we just ignore that
|
|
|
2429 ctx.lineTo(axisx.p2c(x1), axisy.p2c(y1));
|
|
|
2430 ctx.lineTo(axisx.p2c(x2), axisy.p2c(y2));
|
|
|
2431
|
|
|
2432 // fill the other rectangle if it's there
|
|
|
2433 if (x2 != x2old) {
|
|
|
2434 ctx.lineTo(axisx.p2c(x2), axisy.p2c(y2));
|
|
|
2435 ctx.lineTo(axisx.p2c(x2old), axisy.p2c(y2));
|
|
|
2436 }
|
|
|
2437 }
|
|
|
2438 }
|
|
|
2439
|
|
|
2440 ctx.save();
|
|
|
2441 ctx.translate(plotOffset.left, plotOffset.top);
|
|
|
2442 ctx.lineJoin = "round";
|
|
|
2443
|
|
|
2444 var lw = series.lines.lineWidth,
|
|
|
2445 sw = series.shadowSize;
|
|
|
2446 // FIXME: consider another form of shadow when filling is turned on
|
|
|
2447 if (lw > 0 && sw > 0) {
|
|
|
2448 // draw shadow as a thick and thin line with transparency
|
|
|
2449 ctx.lineWidth = sw;
|
|
|
2450 ctx.strokeStyle = "rgba(0,0,0,0.1)";
|
|
|
2451 // position shadow at angle from the mid of line
|
|
|
2452 var angle = Math.PI/18;
|
|
|
2453 plotLine(series.datapoints, Math.sin(angle) * (lw/2 + sw/2), Math.cos(angle) * (lw/2 + sw/2), series.xaxis, series.yaxis);
|
|
|
2454 ctx.lineWidth = sw/2;
|
|
|
2455 plotLine(series.datapoints, Math.sin(angle) * (lw/2 + sw/4), Math.cos(angle) * (lw/2 + sw/4), series.xaxis, series.yaxis);
|
|
|
2456 }
|
|
|
2457
|
|
|
2458 ctx.lineWidth = lw;
|
|
|
2459 ctx.strokeStyle = series.color;
|
|
|
2460 var fillStyle = getFillStyle(series.lines, series.color, 0, plotHeight);
|
|
|
2461 if (fillStyle) {
|
|
|
2462 ctx.fillStyle = fillStyle;
|
|
|
2463 plotLineArea(series.datapoints, series.xaxis, series.yaxis);
|
|
|
2464 }
|
|
|
2465
|
|
|
2466 if (lw > 0)
|
|
|
2467 plotLine(series.datapoints, 0, 0, series.xaxis, series.yaxis);
|
|
|
2468 ctx.restore();
|
|
|
2469 }
|
|
|
2470
|
|
|
2471 function drawSeriesPoints(series) {
|
|
|
2472 function plotPoints(datapoints, radius, fillStyle, offset, shadow, axisx, axisy, symbol) {
|
|
|
2473 var points = datapoints.points, ps = datapoints.pointsize;
|
|
|
2474
|
|
|
2475 for (var i = 0; i < points.length; i += ps) {
|
|
|
2476 var x = points[i], y = points[i + 1];
|
|
|
2477 if (x == null || x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max)
|
|
|
2478 continue;
|
|
|
2479
|
|
|
2480 ctx.beginPath();
|
|
|
2481 x = axisx.p2c(x);
|
|
|
2482 y = axisy.p2c(y) + offset;
|
|
|
2483 if (symbol == "circle")
|
|
|
2484 ctx.arc(x, y, radius, 0, shadow ? Math.PI : Math.PI * 2, false);
|
|
|
2485 else
|
|
|
2486 symbol(ctx, x, y, radius, shadow);
|
|
|
2487 ctx.closePath();
|
|
|
2488
|
|
|
2489 if (fillStyle) {
|
|
|
2490 ctx.fillStyle = fillStyle;
|
|
|
2491 ctx.fill();
|
|
|
2492 }
|
|
|
2493 ctx.stroke();
|
|
|
2494 }
|
|
|
2495 }
|
|
|
2496
|
|
|
2497 ctx.save();
|
|
|
2498 ctx.translate(plotOffset.left, plotOffset.top);
|
|
|
2499
|
|
|
2500 var lw = series.points.lineWidth,
|
|
|
2501 sw = series.shadowSize,
|
|
|
2502 radius = series.points.radius,
|
|
|
2503 symbol = series.points.symbol;
|
|
|
2504
|
|
|
2505 // If the user sets the line width to 0, we change it to a very
|
|
|
2506 // small value. A line width of 0 seems to force the default of 1.
|
|
|
2507 // Doing the conditional here allows the shadow setting to still be
|
|
|
2508 // optional even with a lineWidth of 0.
|
|
|
2509
|
|
|
2510 if( lw == 0 )
|
|
|
2511 lw = 0.0001;
|
|
|
2512
|
|
|
2513 if (lw > 0 && sw > 0) {
|
|
|
2514 // draw shadow in two steps
|
|
|
2515 var w = sw / 2;
|
|
|
2516 ctx.lineWidth = w;
|
|
|
2517 ctx.strokeStyle = "rgba(0,0,0,0.1)";
|
|
|
2518 plotPoints(series.datapoints, radius, null, w + w/2, true,
|
|
|
2519 series.xaxis, series.yaxis, symbol);
|
|
|
2520
|
|
|
2521 ctx.strokeStyle = "rgba(0,0,0,0.2)";
|
|
|
2522 plotPoints(series.datapoints, radius, null, w/2, true,
|
|
|
2523 series.xaxis, series.yaxis, symbol);
|
|
|
2524 }
|
|
|
2525
|
|
|
2526 ctx.lineWidth = lw;
|
|
|
2527 ctx.strokeStyle = series.color;
|
|
|
2528 plotPoints(series.datapoints, radius,
|
|
|
2529 getFillStyle(series.points, series.color), 0, false,
|
|
|
2530 series.xaxis, series.yaxis, symbol);
|
|
|
2531 ctx.restore();
|
|
|
2532 }
|
|
|
2533
|
|
|
2534 function drawBar(x, y, b, barLeft, barRight, fillStyleCallback, axisx, axisy, c, horizontal, lineWidth) {
|
|
|
2535 var left, right, bottom, top,
|
|
|
2536 drawLeft, drawRight, drawTop, drawBottom,
|
|
|
2537 tmp;
|
|
|
2538
|
|
|
2539 // in horizontal mode, we start the bar from the left
|
|
|
2540 // instead of from the bottom so it appears to be
|
|
|
2541 // horizontal rather than vertical
|
|
|
2542 if (horizontal) {
|
|
|
2543 drawBottom = drawRight = drawTop = true;
|
|
|
2544 drawLeft = false;
|
|
|
2545 left = b;
|
|
|
2546 right = x;
|
|
|
2547 top = y + barLeft;
|
|
|
2548 bottom = y + barRight;
|
|
|
2549
|
|
|
2550 // account for negative bars
|
|
|
2551 if (right < left) {
|
|
|
2552 tmp = right;
|
|
|
2553 right = left;
|
|
|
2554 left = tmp;
|
|
|
2555 drawLeft = true;
|
|
|
2556 drawRight = false;
|
|
|
2557 }
|
|
|
2558 }
|
|
|
2559 else {
|
|
|
2560 drawLeft = drawRight = drawTop = true;
|
|
|
2561 drawBottom = false;
|
|
|
2562 left = x + barLeft;
|
|
|
2563 right = x + barRight;
|
|
|
2564 bottom = b;
|
|
|
2565 top = y;
|
|
|
2566
|
|
|
2567 // account for negative bars
|
|
|
2568 if (top < bottom) {
|
|
|
2569 tmp = top;
|
|
|
2570 top = bottom;
|
|
|
2571 bottom = tmp;
|
|
|
2572 drawBottom = true;
|
|
|
2573 drawTop = false;
|
|
|
2574 }
|
|
|
2575 }
|
|
|
2576
|
|
|
2577 // clip
|
|
|
2578 if (right < axisx.min || left > axisx.max ||
|
|
|
2579 top < axisy.min || bottom > axisy.max)
|
|
|
2580 return;
|
|
|
2581
|
|
|
2582 if (left < axisx.min) {
|
|
|
2583 left = axisx.min;
|
|
|
2584 drawLeft = false;
|
|
|
2585 }
|
|
|
2586
|
|
|
2587 if (right > axisx.max) {
|
|
|
2588 right = axisx.max;
|
|
|
2589 drawRight = false;
|
|
|
2590 }
|
|
|
2591
|
|
|
2592 if (bottom < axisy.min) {
|
|
|
2593 bottom = axisy.min;
|
|
|
2594 drawBottom = false;
|
|
|
2595 }
|
|
|
2596
|
|
|
2597 if (top > axisy.max) {
|
|
|
2598 top = axisy.max;
|
|
|
2599 drawTop = false;
|
|
|
2600 }
|
|
|
2601
|
|
|
2602 left = axisx.p2c(left);
|
|
|
2603 bottom = axisy.p2c(bottom);
|
|
|
2604 right = axisx.p2c(right);
|
|
|
2605 top = axisy.p2c(top);
|
|
|
2606
|
|
|
2607 // fill the bar
|
|
|
2608 if (fillStyleCallback) {
|
|
|
2609 c.fillStyle = fillStyleCallback(bottom, top);
|
|
|
2610 c.fillRect(left, top, right - left, bottom - top)
|
|
|
2611 }
|
|
|
2612
|
|
|
2613 // draw outline
|
|
|
2614 if (lineWidth > 0 && (drawLeft || drawRight || drawTop || drawBottom)) {
|
|
|
2615 c.beginPath();
|
|
|
2616
|
|
|
2617 // FIXME: inline moveTo is buggy with excanvas
|
|
|
2618 c.moveTo(left, bottom);
|
|
|
2619 if (drawLeft)
|
|
|
2620 c.lineTo(left, top);
|
|
|
2621 else
|
|
|
2622 c.moveTo(left, top);
|
|
|
2623 if (drawTop)
|
|
|
2624 c.lineTo(right, top);
|
|
|
2625 else
|
|
|
2626 c.moveTo(right, top);
|
|
|
2627 if (drawRight)
|
|
|
2628 c.lineTo(right, bottom);
|
|
|
2629 else
|
|
|
2630 c.moveTo(right, bottom);
|
|
|
2631 if (drawBottom)
|
|
|
2632 c.lineTo(left, bottom);
|
|
|
2633 else
|
|
|
2634 c.moveTo(left, bottom);
|
|
|
2635 c.stroke();
|
|
|
2636 }
|
|
|
2637 }
|
|
|
2638
|
|
|
2639 function drawSeriesBars(series) {
|
|
|
2640 function plotBars(datapoints, barLeft, barRight, fillStyleCallback, axisx, axisy) {
|
|
|
2641 var points = datapoints.points, ps = datapoints.pointsize;
|
|
|
2642
|
|
|
2643 for (var i = 0; i < points.length; i += ps) {
|
|
|
2644 if (points[i] == null)
|
|
|
2645 continue;
|
|
|
2646 drawBar(points[i], points[i + 1], points[i + 2], barLeft, barRight, fillStyleCallback, axisx, axisy, ctx, series.bars.horizontal, series.bars.lineWidth);
|
|
|
2647 }
|
|
|
2648 }
|
|
|
2649
|
|
|
2650 ctx.save();
|
|
|
2651 ctx.translate(plotOffset.left, plotOffset.top);
|
|
|
2652
|
|
|
2653 // FIXME: figure out a way to add shadows (for instance along the right edge)
|
|
|
2654 ctx.lineWidth = series.bars.lineWidth;
|
|
|
2655 ctx.strokeStyle = series.color;
|
|
|
2656
|
|
|
2657 var barLeft;
|
|
|
2658
|
|
|
2659 switch (series.bars.align) {
|
|
|
2660 case "left":
|
|
|
2661 barLeft = 0;
|
|
|
2662 break;
|
|
|
2663 case "right":
|
|
|
2664 barLeft = -series.bars.barWidth;
|
|
|
2665 break;
|
|
|
2666 default:
|
|
|
2667 barLeft = -series.bars.barWidth / 2;
|
|
|
2668 }
|
|
|
2669
|
|
|
2670 var fillStyleCallback = series.bars.fill ? function (bottom, top) { return getFillStyle(series.bars, series.color, bottom, top); } : null;
|
|
|
2671 plotBars(series.datapoints, barLeft, barLeft + series.bars.barWidth, fillStyleCallback, series.xaxis, series.yaxis);
|
|
|
2672 ctx.restore();
|
|
|
2673 }
|
|
|
2674
|
|
|
2675 function getFillStyle(filloptions, seriesColor, bottom, top) {
|
|
|
2676 var fill = filloptions.fill;
|
|
|
2677 if (!fill)
|
|
|
2678 return null;
|
|
|
2679
|
|
|
2680 if (filloptions.fillColor)
|
|
|
2681 return getColorOrGradient(filloptions.fillColor, bottom, top, seriesColor);
|
|
|
2682
|
|
|
2683 var c = $.color.parse(seriesColor);
|
|
|
2684 c.a = typeof fill == "number" ? fill : 0.4;
|
|
|
2685 c.normalize();
|
|
|
2686 return c.toString();
|
|
|
2687 }
|
|
|
2688
|
|
|
2689 function insertLegend() {
|
|
|
2690
|
|
|
2691 if (options.legend.container != null) {
|
|
|
2692 $(options.legend.container).html("");
|
|
|
2693 } else {
|
|
|
2694 placeholder.find(".legend").remove();
|
|
|
2695 }
|
|
|
2696
|
|
|
2697 if (!options.legend.show) {
|
|
|
2698 return;
|
|
|
2699 }
|
|
|
2700
|
|
|
2701 var fragments = [], entries = [], rowStarted = false,
|
|
|
2702 lf = options.legend.labelFormatter, s, label;
|
|
|
2703
|
|
|
2704 // Build a list of legend entries, with each having a label and a color
|
|
|
2705
|
|
|
2706 for (var i = 0; i < series.length; ++i) {
|
|
|
2707 s = series[i];
|
|
|
2708 if (s.label) {
|
|
|
2709 label = lf ? lf(s.label, s) : s.label;
|
|
|
2710 if (label) {
|
|
|
2711 entries.push({
|
|
|
2712 label: label,
|
|
|
2713 color: s.color
|
|
|
2714 });
|
|
|
2715 }
|
|
|
2716 }
|
|
|
2717 }
|
|
|
2718
|
|
|
2719 // Sort the legend using either the default or a custom comparator
|
|
|
2720
|
|
|
2721 if (options.legend.sorted) {
|
|
|
2722 if ($.isFunction(options.legend.sorted)) {
|
|
|
2723 entries.sort(options.legend.sorted);
|
|
|
2724 } else if (options.legend.sorted == "reverse") {
|
|
|
2725 entries.reverse();
|
|
|
2726 } else {
|
|
|
2727 var ascending = options.legend.sorted != "descending";
|
|
|
2728 entries.sort(function(a, b) {
|
|
|
2729 return a.label == b.label ? 0 : (
|
|
|
2730 (a.label < b.label) != ascending ? 1 : -1 // Logical XOR
|
|
|
2731 );
|
|
|
2732 });
|
|
|
2733 }
|
|
|
2734 }
|
|
|
2735
|
|
|
2736 // Generate markup for the list of entries, in their final order
|
|
|
2737
|
|
|
2738 for (var i = 0; i < entries.length; ++i) {
|
|
|
2739
|
|
|
2740 var entry = entries[i];
|
|
|
2741
|
|
|
2742 if (i % options.legend.noColumns == 0) {
|
|
|
2743 if (rowStarted)
|
|
|
2744 fragments.push('</tr>');
|
|
|
2745 fragments.push('<tr>');
|
|
|
2746 rowStarted = true;
|
|
|
2747 }
|
|
|
2748
|
|
|
2749 fragments.push(
|
|
|
2750 '<td class="legendColorBox"><div style="border:1px solid ' + options.legend.labelBoxBorderColor + ';padding:1px"><div style="width:4px;height:0;border:5px solid ' + entry.color + ';overflow:hidden"></div></div></td>' +
|
|
|
2751 '<td class="legendLabel">' + entry.label + '</td>'
|
|
|
2752 );
|
|
|
2753 }
|
|
|
2754
|
|
|
2755 if (rowStarted)
|
|
|
2756 fragments.push('</tr>');
|
|
|
2757
|
|
|
2758 if (fragments.length == 0)
|
|
|
2759 return;
|
|
|
2760
|
|
|
2761 var table = '<table style="font-size:smaller;color:' + options.grid.color + '">' + fragments.join("") + '</table>';
|
|
|
2762 if (options.legend.container != null)
|
|
|
2763 $(options.legend.container).html(table);
|
|
|
2764 else {
|
|
|
2765 var pos = "",
|
|
|
2766 p = options.legend.position,
|
|
|
2767 m = options.legend.margin;
|
|
|
2768 if (m[0] == null)
|
|
|
2769 m = [m, m];
|
|
|
2770 if (p.charAt(0) == "n")
|
|
|
2771 pos += 'top:' + (m[1] + plotOffset.top) + 'px;';
|
|
|
2772 else if (p.charAt(0) == "s")
|
|
|
2773 pos += 'bottom:' + (m[1] + plotOffset.bottom) + 'px;';
|
|
|
2774 if (p.charAt(1) == "e")
|
|
|
2775 pos += 'right:' + (m[0] + plotOffset.right) + 'px;';
|
|
|
2776 else if (p.charAt(1) == "w")
|
|
|
2777 pos += 'left:' + (m[0] + plotOffset.left) + 'px;';
|
|
|
2778 var legend = $('<div class="legend">' + table.replace('style="', 'style="position:absolute;' + pos +';') + '</div>').appendTo(placeholder);
|
|
|
2779 if (options.legend.backgroundOpacity != 0.0) {
|
|
|
2780 // put in the transparent background
|
|
|
2781 // separately to avoid blended labels and
|
|
|
2782 // label boxes
|
|
|
2783 var c = options.legend.backgroundColor;
|
|
|
2784 if (c == null) {
|
|
|
2785 c = options.grid.backgroundColor;
|
|
|
2786 if (c && typeof c == "string")
|
|
|
2787 c = $.color.parse(c);
|
|
|
2788 else
|
|
|
2789 c = $.color.extract(legend, 'background-color');
|
|
|
2790 c.a = 1;
|
|
|
2791 c = c.toString();
|
|
|
2792 }
|
|
|
2793 var div = legend.children();
|
|
|
2794 $('<div style="position:absolute;width:' + div.width() + 'px;height:' + div.height() + 'px;' + pos +'background-color:' + c + ';"> </div>').prependTo(legend).css('opacity', options.legend.backgroundOpacity);
|
|
|
2795 }
|
|
|
2796 }
|
|
|
2797 }
|
|
|
2798
|
|
|
2799
|
|
|
2800 // interactive features
|
|
|
2801
|
|
|
2802 var highlights = [],
|
|
|
2803 redrawTimeout = null;
|
|
|
2804
|
|
|
2805 // returns the data item the mouse is over, or null if none is found
|
|
|
2806 function findNearbyItem(mouseX, mouseY, seriesFilter) {
|
|
|
2807 var maxDistance = options.grid.mouseActiveRadius,
|
|
|
2808 smallestDistance = maxDistance * maxDistance + 1,
|
|
|
2809 item = null, foundPoint = false, i, j, ps;
|
|
|
2810
|
|
|
2811 for (i = series.length - 1; i >= 0; --i) {
|
|
|
2812 if (!seriesFilter(series[i]))
|
|
|
2813 continue;
|
|
|
2814
|
|
|
2815 var s = series[i],
|
|
|
2816 axisx = s.xaxis,
|
|
|
2817 axisy = s.yaxis,
|
|
|
2818 points = s.datapoints.points,
|
|
|
2819 mx = axisx.c2p(mouseX), // precompute some stuff to make the loop faster
|
|
|
2820 my = axisy.c2p(mouseY),
|
|
|
2821 maxx = maxDistance / axisx.scale,
|
|
|
2822 maxy = maxDistance / axisy.scale;
|
|
|
2823
|
|
|
2824 ps = s.datapoints.pointsize;
|
|
|
2825 // with inverse transforms, we can't use the maxx/maxy
|
|
|
2826 // optimization, sadly
|
|
|
2827 if (axisx.options.inverseTransform)
|
|
|
2828 maxx = Number.MAX_VALUE;
|
|
|
2829 if (axisy.options.inverseTransform)
|
|
|
2830 maxy = Number.MAX_VALUE;
|
|
|
2831
|
|
|
2832 if (s.lines.show || s.points.show) {
|
|
|
2833 for (j = 0; j < points.length; j += ps) {
|
|
|
2834 var x = points[j], y = points[j + 1];
|
|
|
2835 if (x == null)
|
|
|
2836 continue;
|
|
|
2837
|
|
|
2838 // For points and lines, the cursor must be within a
|
|
|
2839 // certain distance to the data point
|
|
|
2840 if (x - mx > maxx || x - mx < -maxx ||
|
|
|
2841 y - my > maxy || y - my < -maxy)
|
|
|
2842 continue;
|
|
|
2843
|
|
|
2844 // We have to calculate distances in pixels, not in
|
|
|
2845 // data units, because the scales of the axes may be different
|
|
|
2846 var dx = Math.abs(axisx.p2c(x) - mouseX),
|
|
|
2847 dy = Math.abs(axisy.p2c(y) - mouseY),
|
|
|
2848 dist = dx * dx + dy * dy; // we save the sqrt
|
|
|
2849
|
|
|
2850 // use <= to ensure last point takes precedence
|
|
|
2851 // (last generally means on top of)
|
|
|
2852 if (dist < smallestDistance) {
|
|
|
2853 smallestDistance = dist;
|
|
|
2854 item = [i, j / ps];
|
|
|
2855 }
|
|
|
2856 }
|
|
|
2857 }
|
|
|
2858
|
|
|
2859 if (s.bars.show && !item) { // no other point can be nearby
|
|
|
2860
|
|
|
2861 var barLeft, barRight;
|
|
|
2862
|
|
|
2863 switch (s.bars.align) {
|
|
|
2864 case "left":
|
|
|
2865 barLeft = 0;
|
|
|
2866 break;
|
|
|
2867 case "right":
|
|
|
2868 barLeft = -s.bars.barWidth;
|
|
|
2869 break;
|
|
|
2870 default:
|
|
|
2871 barLeft = -s.bars.barWidth / 2;
|
|
|
2872 }
|
|
|
2873
|
|
|
2874 barRight = barLeft + s.bars.barWidth;
|
|
|
2875
|
|
|
2876 for (j = 0; j < points.length; j += ps) {
|
|
|
2877 var x = points[j], y = points[j + 1], b = points[j + 2];
|
|
|
2878 if (x == null)
|
|
|
2879 continue;
|
|
|
2880
|
|
|
2881 // for a bar graph, the cursor must be inside the bar
|
|
|
2882 if (series[i].bars.horizontal ?
|
|
|
2883 (mx <= Math.max(b, x) && mx >= Math.min(b, x) &&
|
|
|
2884 my >= y + barLeft && my <= y + barRight) :
|
|
|
2885 (mx >= x + barLeft && mx <= x + barRight &&
|
|
|
2886 my >= Math.min(b, y) && my <= Math.max(b, y)))
|
|
|
2887 item = [i, j / ps];
|
|
|
2888 }
|
|
|
2889 }
|
|
|
2890 }
|
|
|
2891
|
|
|
2892 if (item) {
|
|
|
2893 i = item[0];
|
|
|
2894 j = item[1];
|
|
|
2895 ps = series[i].datapoints.pointsize;
|
|
|
2896
|
|
|
2897 return { datapoint: series[i].datapoints.points.slice(j * ps, (j + 1) * ps),
|
|
|
2898 dataIndex: j,
|
|
|
2899 series: series[i],
|
|
|
2900 seriesIndex: i };
|
|
|
2901 }
|
|
|
2902
|
|
|
2903 return null;
|
|
|
2904 }
|
|
|
2905
|
|
|
2906 function onMouseMove(e) {
|
|
|
2907 if (options.grid.hoverable)
|
|
|
2908 triggerClickHoverEvent("plothover", e,
|
|
|
2909 function (s) { return s["hoverable"] != false; });
|
|
|
2910 }
|
|
|
2911
|
|
|
2912 function onMouseLeave(e) {
|
|
|
2913 if (options.grid.hoverable)
|
|
|
2914 triggerClickHoverEvent("plothover", e,
|
|
|
2915 function (s) { return false; });
|
|
|
2916 }
|
|
|
2917
|
|
|
2918 function onClick(e) {
|
|
|
2919 triggerClickHoverEvent("plotclick", e,
|
|
|
2920 function (s) { return s["clickable"] != false; });
|
|
|
2921 }
|
|
|
2922
|
|
|
2923 // trigger click or hover event (they send the same parameters
|
|
|
2924 // so we share their code)
|
|
|
2925 function triggerClickHoverEvent(eventname, event, seriesFilter) {
|
|
|
2926 var offset = eventHolder.offset(),
|
|
|
2927 canvasX = event.pageX - offset.left - plotOffset.left,
|
|
|
2928 canvasY = event.pageY - offset.top - plotOffset.top,
|
|
|
2929 pos = canvasToAxisCoords({ left: canvasX, top: canvasY });
|
|
|
2930
|
|
|
2931 pos.pageX = event.pageX;
|
|
|
2932 pos.pageY = event.pageY;
|
|
|
2933
|
|
|
2934 var item = findNearbyItem(canvasX, canvasY, seriesFilter);
|
|
|
2935
|
|
|
2936 if (item) {
|
|
|
2937 // fill in mouse pos for any listeners out there
|
|
|
2938 item.pageX = parseInt(item.series.xaxis.p2c(item.datapoint[0]) + offset.left + plotOffset.left, 10);
|
|
|
2939 item.pageY = parseInt(item.series.yaxis.p2c(item.datapoint[1]) + offset.top + plotOffset.top, 10);
|
|
|
2940 }
|
|
|
2941
|
|
|
2942 if (options.grid.autoHighlight) {
|
|
|
2943 // clear auto-highlights
|
|
|
2944 for (var i = 0; i < highlights.length; ++i) {
|
|
|
2945 var h = highlights[i];
|
|
|
2946 if (h.auto == eventname &&
|
|
|
2947 !(item && h.series == item.series &&
|
|
|
2948 h.point[0] == item.datapoint[0] &&
|
|
|
2949 h.point[1] == item.datapoint[1]))
|
|
|
2950 unhighlight(h.series, h.point);
|
|
|
2951 }
|
|
|
2952
|
|
|
2953 if (item)
|
|
|
2954 highlight(item.series, item.datapoint, eventname);
|
|
|
2955 }
|
|
|
2956
|
|
|
2957 placeholder.trigger(eventname, [ pos, item ]);
|
|
|
2958 }
|
|
|
2959
|
|
|
2960 function triggerRedrawOverlay() {
|
|
|
2961 var t = options.interaction.redrawOverlayInterval;
|
|
|
2962 if (t == -1) { // skip event queue
|
|
|
2963 drawOverlay();
|
|
|
2964 return;
|
|
|
2965 }
|
|
|
2966
|
|
|
2967 if (!redrawTimeout)
|
|
|
2968 redrawTimeout = setTimeout(drawOverlay, t);
|
|
|
2969 }
|
|
|
2970
|
|
|
2971 function drawOverlay() {
|
|
|
2972 redrawTimeout = null;
|
|
|
2973
|
|
|
2974 // draw highlights
|
|
|
2975 octx.save();
|
|
|
2976 overlay.clear();
|
|
|
2977 octx.translate(plotOffset.left, plotOffset.top);
|
|
|
2978
|
|
|
2979 var i, hi;
|
|
|
2980 for (i = 0; i < highlights.length; ++i) {
|
|
|
2981 hi = highlights[i];
|
|
|
2982
|
|
|
2983 if (hi.series.bars.show)
|
|
|
2984 drawBarHighlight(hi.series, hi.point);
|
|
|
2985 else
|
|
|
2986 drawPointHighlight(hi.series, hi.point);
|
|
|
2987 }
|
|
|
2988 octx.restore();
|
|
|
2989
|
|
|
2990 executeHooks(hooks.drawOverlay, [octx]);
|
|
|
2991 }
|
|
|
2992
|
|
|
2993 function highlight(s, point, auto) {
|
|
|
2994 if (typeof s == "number")
|
|
|
2995 s = series[s];
|
|
|
2996
|
|
|
2997 if (typeof point == "number") {
|
|
|
2998 var ps = s.datapoints.pointsize;
|
|
|
2999 point = s.datapoints.points.slice(ps * point, ps * (point + 1));
|
|
|
3000 }
|
|
|
3001
|
|
|
3002 var i = indexOfHighlight(s, point);
|
|
|
3003 if (i == -1) {
|
|
|
3004 highlights.push({ series: s, point: point, auto: auto });
|
|
|
3005
|
|
|
3006 triggerRedrawOverlay();
|
|
|
3007 }
|
|
|
3008 else if (!auto)
|
|
|
3009 highlights[i].auto = false;
|
|
|
3010 }
|
|
|
3011
|
|
|
3012 function unhighlight(s, point) {
|
|
|
3013 if (s == null && point == null) {
|
|
|
3014 highlights = [];
|
|
|
3015 triggerRedrawOverlay();
|
|
|
3016 return;
|
|
|
3017 }
|
|
|
3018
|
|
|
3019 if (typeof s == "number")
|
|
|
3020 s = series[s];
|
|
|
3021
|
|
|
3022 if (typeof point == "number") {
|
|
|
3023 var ps = s.datapoints.pointsize;
|
|
|
3024 point = s.datapoints.points.slice(ps * point, ps * (point + 1));
|
|
|
3025 }
|
|
|
3026
|
|
|
3027 var i = indexOfHighlight(s, point);
|
|
|
3028 if (i != -1) {
|
|
|
3029 highlights.splice(i, 1);
|
|
|
3030
|
|
|
3031 triggerRedrawOverlay();
|
|
|
3032 }
|
|
|
3033 }
|
|
|
3034
|
|
|
3035 function indexOfHighlight(s, p) {
|
|
|
3036 for (var i = 0; i < highlights.length; ++i) {
|
|
|
3037 var h = highlights[i];
|
|
|
3038 if (h.series == s && h.point[0] == p[0]
|
|
|
3039 && h.point[1] == p[1])
|
|
|
3040 return i;
|
|
|
3041 }
|
|
|
3042 return -1;
|
|
|
3043 }
|
|
|
3044
|
|
|
3045 function drawPointHighlight(series, point) {
|
|
|
3046 var x = point[0], y = point[1],
|
|
|
3047 axisx = series.xaxis, axisy = series.yaxis,
|
|
|
3048 highlightColor = (typeof series.highlightColor === "string") ? series.highlightColor : $.color.parse(series.color).scale('a', 0.5).toString();
|
|
|
3049
|
|
|
3050 if (x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max)
|
|
|
3051 return;
|
|
|
3052
|
|
|
3053 var pointRadius = series.points.radius + series.points.lineWidth / 2;
|
|
|
3054 octx.lineWidth = pointRadius;
|
|
|
3055 octx.strokeStyle = highlightColor;
|
|
|
3056 var radius = 1.5 * pointRadius;
|
|
|
3057 x = axisx.p2c(x);
|
|
|
3058 y = axisy.p2c(y);
|
|
|
3059
|
|
|
3060 octx.beginPath();
|
|
|
3061 if (series.points.symbol == "circle")
|
|
|
3062 octx.arc(x, y, radius, 0, 2 * Math.PI, false);
|
|
|
3063 else
|
|
|
3064 series.points.symbol(octx, x, y, radius, false);
|
|
|
3065 octx.closePath();
|
|
|
3066 octx.stroke();
|
|
|
3067 }
|
|
|
3068
|
|
|
3069 function drawBarHighlight(series, point) {
|
|
|
3070 var highlightColor = (typeof series.highlightColor === "string") ? series.highlightColor : $.color.parse(series.color).scale('a', 0.5).toString(),
|
|
|
3071 fillStyle = highlightColor,
|
|
|
3072 barLeft;
|
|
|
3073
|
|
|
3074 switch (series.bars.align) {
|
|
|
3075 case "left":
|
|
|
3076 barLeft = 0;
|
|
|
3077 break;
|
|
|
3078 case "right":
|
|
|
3079 barLeft = -series.bars.barWidth;
|
|
|
3080 break;
|
|
|
3081 default:
|
|
|
3082 barLeft = -series.bars.barWidth / 2;
|
|
|
3083 }
|
|
|
3084
|
|
|
3085 octx.lineWidth = series.bars.lineWidth;
|
|
|
3086 octx.strokeStyle = highlightColor;
|
|
|
3087
|
|
|
3088 drawBar(point[0], point[1], point[2] || 0, barLeft, barLeft + series.bars.barWidth,
|
|
|
3089 function () { return fillStyle; }, series.xaxis, series.yaxis, octx, series.bars.horizontal, series.bars.lineWidth);
|
|
|
3090 }
|
|
|
3091
|
|
|
3092 function getColorOrGradient(spec, bottom, top, defaultColor) {
|
|
|
3093 if (typeof spec == "string")
|
|
|
3094 return spec;
|
|
|
3095 else {
|
|
|
3096 // assume this is a gradient spec; IE currently only
|
|
|
3097 // supports a simple vertical gradient properly, so that's
|
|
|
3098 // what we support too
|
|
|
3099 var gradient = ctx.createLinearGradient(0, top, 0, bottom);
|
|
|
3100
|
|
|
3101 for (var i = 0, l = spec.colors.length; i < l; ++i) {
|
|
|
3102 var c = spec.colors[i];
|
|
|
3103 if (typeof c != "string") {
|
|
|
3104 var co = $.color.parse(defaultColor);
|
|
|
3105 if (c.brightness != null)
|
|
|
3106 co = co.scale('rgb', c.brightness);
|
|
|
3107 if (c.opacity != null)
|
|
|
3108 co.a *= c.opacity;
|
|
|
3109 c = co.toString();
|
|
|
3110 }
|
|
|
3111 gradient.addColorStop(i / (l - 1), c);
|
|
|
3112 }
|
|
|
3113
|
|
|
3114 return gradient;
|
|
|
3115 }
|
|
|
3116 }
|
|
|
3117 }
|
|
|
3118
|
|
|
3119 // Add the plot function to the top level of the jQuery object
|
|
|
3120
|
|
|
3121 $.plot = function(placeholder, data, options) {
|
|
|
3122 //var t0 = new Date();
|
|
|
3123 var plot = new Plot($(placeholder), data, options, $.plot.plugins);
|
|
|
3124 //(window.console ? console.log : alert)("time used (msecs): " + ((new Date()).getTime() - t0.getTime()));
|
|
|
3125 return plot;
|
|
|
3126 };
|
|
|
3127
|
|
|
3128 $.plot.version = "0.8.3-alpha";
|
|
|
3129
|
|
|
3130 $.plot.plugins = [];
|
|
|
3131
|
|
|
3132 // Also add the plot function as a chainable property
|
|
|
3133
|
|
|
3134 $.fn.plot = function(data, options) {
|
|
|
3135 return this.each(function() {
|
|
|
3136 $.plot(this, data, options);
|
|
|
3137 });
|
|
|
3138 };
|
|
|
3139
|
|
|
3140 // round to nearby lower multiple of base
|
|
|
3141 function floorInBase(n, base) {
|
|
|
3142 return base * Math.floor(n / base);
|
|
|
3143 }
|
|
|
3144
|
|
|
3145 })(jQuery);
|
