[77] | 1 | /** |
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| 2 | * o------------------------------------------------------------------------------o |
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| 3 | * | This file is part of the RGraph package - you can learn more at: | |
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| 4 | * | | |
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| 5 | * | http://www.rgraph.net | |
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| 6 | * | | |
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| 7 | * | This package is licensed under the RGraph license. For all kinds of business | |
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| 8 | * | purposes there is a small one-time licensing fee to pay and for non | |
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| 9 | * | commercial purposes it is free to use. You can read the full license here: | |
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| 10 | * | | |
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| 11 | * | http://www.rgraph.net/LICENSE.txt | |
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| 12 | * o------------------------------------------------------------------------------o |
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| 13 | */ |
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| 14 | |
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| 15 | if (typeof(RGraph) == 'undefined') RGraph = {}; |
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| 16 | |
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| 17 | /** |
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| 18 | * The horizontal bar chart constructor. The horizontal bar is a minor variant |
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| 19 | * on the bar chart. If you have big labels, this may be useful as there is usually |
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| 20 | * more space available for them. |
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| 21 | * |
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| 22 | * @param object canvas The canvas object |
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| 23 | * @param array data The chart data |
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| 24 | */ |
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| 25 | RGraph.HBar = function (id, data) |
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| 26 | { |
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| 27 | // Get the canvas and context objects |
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| 28 | this.id = id; |
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| 29 | this.canvas = document.getElementById(id); |
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| 30 | this.context = this.canvas.getContext ? this.canvas.getContext("2d") : null; |
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| 31 | this.canvas.__object__ = this; |
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| 32 | this.data = data; |
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| 33 | this.type = 'hbar'; |
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| 34 | this.coords = []; |
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| 35 | this.isRGraph = true; |
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| 36 | |
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| 37 | |
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| 38 | /** |
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| 39 | * Compatibility with older browsers |
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| 40 | */ |
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| 41 | RGraph.OldBrowserCompat(this.context); |
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| 42 | |
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| 43 | |
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| 44 | this.max = 0; |
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| 45 | this.stackedOrGrouped = false; |
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| 46 | |
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| 47 | // Default properties |
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| 48 | this.properties = { |
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| 49 | 'chart.gutter.left': 75, |
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| 50 | 'chart.gutter.right': 25, |
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| 51 | 'chart.gutter.top': 35, |
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| 52 | 'chart.gutter.bottom': 25, |
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| 53 | 'chart.background.grid': true, |
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| 54 | 'chart.background.grid.color': '#ddd', |
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| 55 | 'chart.background.grid.width': 1, |
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| 56 | 'chart.background.grid.hsize': 25, |
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| 57 | 'chart.background.grid.vsize': 25, |
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| 58 | 'chart.background.barcolor1': 'white', |
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| 59 | 'chart.background.barcolor2': 'white', |
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| 60 | 'chart.background.grid.hlines': true, |
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| 61 | 'chart.background.grid.vlines': true, |
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| 62 | 'chart.background.grid.border': true, |
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| 63 | 'chart.background.grid.autofit':false, |
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| 64 | 'chart.background.grid.autofit.numhlines': 14, |
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| 65 | 'chart.background.grid.autofit.numvlines': 20, |
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| 66 | 'chart.title': '', |
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| 67 | 'chart.title.background': null, |
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| 68 | 'chart.title.xaxis': '', |
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| 69 | 'chart.title.yaxis': '', |
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| 70 | 'chart.title.xaxis.pos': 0.25, |
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| 71 | 'chart.title.yaxis.pos': 10, |
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| 72 | 'chart.title.hpos': null, |
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| 73 | 'chart.title.vpos': null, |
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| 74 | 'chart.text.size': 10, |
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| 75 | 'chart.text.color': 'black', |
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| 76 | 'chart.text.font': 'Verdana', |
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| 77 | 'chart.colors': ['red', 'blue', 'green', 'pink', 'yellow', 'cyan', 'navy', 'gray', 'black'], |
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| 78 | 'chart.labels': [], |
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| 79 | 'chart.labels.above': false, |
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| 80 | 'chart.labels.above.decimals': 0, |
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| 81 | 'chart.xlabels': true, |
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| 82 | 'chart.contextmenu': null, |
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| 83 | 'chart.key': [], |
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| 84 | 'chart.key.background': 'white', |
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| 85 | 'chart.key.position': 'graph', |
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| 86 | 'chart.key.halign': 'right', |
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| 87 | 'chart.key.shadow': false, |
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| 88 | 'chart.key.shadow.color': '#666', |
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| 89 | 'chart.key.shadow.blur': 3, |
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| 90 | 'chart.key.shadow.offsetx': 2, |
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| 91 | 'chart.key.shadow.offsety': 2, |
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| 92 | 'chart.key.position.gutter.boxed': true, |
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| 93 | 'chart.key.position.x': null, |
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| 94 | 'chart.key.position.y': null, |
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| 95 | 'chart.key.color.shape': 'square', |
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| 96 | 'chart.key.rounded': true, |
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| 97 | 'chart.key.linewidth': 1, |
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| 98 | 'chart.units.pre': '', |
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| 99 | 'chart.units.post': '', |
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| 100 | 'chart.units.ingraph': false, |
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| 101 | 'chart.strokestyle': 'black', |
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| 102 | 'chart.xmin': 0, |
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| 103 | 'chart.xmax': 0, |
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| 104 | 'chart.axis.color': 'black', |
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| 105 | 'chart.shadow': false, |
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| 106 | 'chart.shadow.color': '#666', |
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| 107 | 'chart.shadow.blur': 3, |
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| 108 | 'chart.shadow.offsetx': 3, |
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| 109 | 'chart.shadow.offsety': 3, |
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| 110 | 'chart.vmargin': 3, |
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| 111 | 'chart.grouping': 'grouped', |
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| 112 | 'chart.tooltips': null, |
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| 113 | 'chart.tooltips.event': 'onclick', |
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| 114 | 'chart.tooltips.effect': 'fade', |
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| 115 | 'chart.tooltips.css.class': 'RGraph_tooltip', |
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| 116 | 'chart.tooltips.highlight': true, |
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| 117 | 'chart.highlight.fill': 'rgba(255,255,255,0.5)', |
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| 118 | 'chart.highlight.stroke': 'black', |
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| 119 | 'chart.annotatable': false, |
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| 120 | 'chart.annotate.color': 'black', |
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| 121 | 'chart.zoom.factor': 1.5, |
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| 122 | 'chart.zoom.fade.in': true, |
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| 123 | 'chart.zoom.fade.out': true, |
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| 124 | 'chart.zoom.hdir': 'right', |
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| 125 | 'chart.zoom.vdir': 'down', |
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| 126 | 'chart.zoom.frames': 10, |
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| 127 | 'chart.zoom.delay': 50, |
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| 128 | 'chart.zoom.shadow': true, |
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| 129 | 'chart.zoom.mode': 'canvas', |
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| 130 | 'chart.zoom.thumbnail.width': 75, |
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| 131 | 'chart.zoom.thumbnail.height': 75, |
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| 132 | 'chart.zoom.background': true, |
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| 133 | 'chart.zoom.action': 'zoom', |
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| 134 | 'chart.resizable': false, |
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| 135 | 'chart.resize.handle.adjust': [0,0], |
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| 136 | 'chart.resize.handle.background': null, |
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| 137 | 'chart.scale.point': '.', |
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| 138 | 'chart.scale.thousand': ',', |
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| 139 | 'chart.scale.decimals': null, |
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| 140 | 'chart.noredraw': false |
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| 141 | } |
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| 142 | |
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| 143 | // Check for support |
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| 144 | if (!this.canvas) { |
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| 145 | alert('[HBAR] No canvas support'); |
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| 146 | return; |
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| 147 | } |
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| 148 | |
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| 149 | for (i=0; i<this.data.length; ++i) { |
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| 150 | if (typeof(this.data[i]) == 'object') { |
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| 151 | this.stackedOrGrouped = true; |
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| 152 | } |
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| 153 | } |
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| 154 | |
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| 155 | |
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| 156 | /** |
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| 157 | * Set the .getShape commonly named method |
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| 158 | */ |
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| 159 | this.getShape = this.getBar; |
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| 160 | } |
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| 161 | |
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| 162 | |
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| 163 | /** |
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| 164 | * A setter |
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| 165 | * |
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| 166 | * @param name string The name of the property to set |
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| 167 | * @param value mixed The value of the property |
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| 168 | */ |
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| 169 | RGraph.HBar.prototype.Set = function (name, value) |
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| 170 | { |
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| 171 | if (name == 'chart.labels.abovebar') { |
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| 172 | name = 'chart.labels.above'; |
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| 173 | } |
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| 174 | |
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| 175 | this.properties[name.toLowerCase()] = value; |
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| 176 | } |
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| 177 | |
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| 178 | |
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| 179 | /** |
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| 180 | * A getter |
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| 181 | * |
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| 182 | * @param name string The name of the property to get |
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| 183 | */ |
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| 184 | RGraph.HBar.prototype.Get = function (name) |
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| 185 | { |
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| 186 | if (name == 'chart.labels.abovebar') { |
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| 187 | name = 'chart.labels.above'; |
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| 188 | } |
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| 189 | |
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| 190 | return this.properties[name]; |
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| 191 | } |
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| 192 | |
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| 193 | |
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| 194 | /** |
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| 195 | * The function you call to draw the bar chart |
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| 196 | */ |
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| 197 | RGraph.HBar.prototype.Draw = function () |
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| 198 | { |
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| 199 | /** |
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| 200 | * Fire the onbeforedraw event |
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| 201 | */ |
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| 202 | RGraph.FireCustomEvent(this, 'onbeforedraw'); |
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| 203 | |
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| 204 | |
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| 205 | /** |
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| 206 | * Clear all of this canvases event handlers (the ones installed by RGraph) |
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| 207 | */ |
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| 208 | RGraph.ClearEventListeners(this.id); |
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| 209 | |
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| 210 | /** |
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| 211 | * This is new in May 2011 and facilitates indiviual gutter settings, |
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| 212 | * eg chart.gutter.left |
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| 213 | */ |
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| 214 | this.gutterLeft = this.Get('chart.gutter.left'); |
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| 215 | this.gutterRight = this.Get('chart.gutter.right'); |
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| 216 | this.gutterTop = this.Get('chart.gutter.top'); |
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| 217 | this.gutterBottom = this.Get('chart.gutter.bottom'); |
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| 218 | |
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| 219 | /** |
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| 220 | * Stop the coords array from growing uncontrollably |
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| 221 | */ |
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| 222 | this.coords = []; |
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| 223 | this.max = 0; |
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| 224 | |
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| 225 | /** |
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| 226 | * Check for chart.xmin in stacked charts |
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| 227 | */ |
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| 228 | if (this.Get('chart.xmin') > 0 && this.Get('chart.grouping') == 'stacked') { |
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| 229 | alert('[HBAR] Using chart.xmin is not supported with stacked charts, resetting chart.xmin to zero'); |
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| 230 | this.Set('chart.xmin', 0); |
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| 231 | } |
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| 232 | |
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| 233 | /** |
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| 234 | * Work out a few things. They need to be here because they depend on things you can change before you |
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| 235 | * call Draw() but after you instantiate the object |
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| 236 | */ |
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| 237 | this.graphwidth = this.canvas.width - this.gutterLeft - this.gutterRight; |
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| 238 | this.graphheight = this.canvas.height - this.gutterTop - this.gutterBottom; |
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| 239 | this.halfgrapharea = this.grapharea / 2; |
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| 240 | this.halfTextHeight = this.Get('chart.text.size') / 2; |
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| 241 | |
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| 242 | |
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| 243 | // Progressively Draw the chart |
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| 244 | RGraph.background.Draw(this); |
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| 245 | |
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| 246 | this.Drawbars(); |
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| 247 | this.DrawAxes(); |
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| 248 | this.DrawLabels(); |
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| 249 | |
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| 250 | |
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| 251 | // Draw the key if necessary |
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| 252 | if (this.Get('chart.key').length) { |
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| 253 | RGraph.DrawKey(this, this.Get('chart.key'), this.Get('chart.colors')); |
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| 254 | } |
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| 255 | |
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| 256 | /** |
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| 257 | * Install the event handlers for tooltips |
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| 258 | */ |
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| 259 | if (this.Get('chart.tooltips')) { |
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| 260 | |
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| 261 | // Need to register this object for redrawing |
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| 262 | RGraph.Register(this); |
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| 263 | |
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| 264 | /** |
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| 265 | * Install the window onclick handler |
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| 266 | */ |
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| 267 | window.onclick = function () |
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| 268 | { |
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| 269 | RGraph.Redraw(); |
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| 270 | } |
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| 271 | |
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| 272 | |
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| 273 | |
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| 274 | /** |
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| 275 | * If the cursor is over a hotspot, change the cursor to a hand |
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| 276 | */ |
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| 277 | //this.canvas.onmousemove = function (e) |
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| 278 | var canvas_onmousemove_func = function (e) |
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| 279 | { |
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| 280 | e = RGraph.FixEventObject(e); |
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| 281 | |
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| 282 | var canvas = document.getElementById(this.id); |
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| 283 | var obj = canvas.__object__; |
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| 284 | var bar = obj.getBar(e); |
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| 285 | |
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| 286 | /** |
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| 287 | * Get the mouse X/Y coordinates |
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| 288 | */ |
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| 289 | var mouseCoords = RGraph.getMouseXY(e); |
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| 290 | |
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| 291 | if (bar && (typeof(obj.Get('chart.tooltips')) == 'function' || obj.Get('chart.tooltips')[bar[4]]) ) { |
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| 292 | |
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| 293 | canvas.style.cursor = 'pointer'; |
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| 294 | |
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| 295 | var left = bar[0]; |
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| 296 | var top = bar[1]; |
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| 297 | var width = bar[2]; |
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| 298 | var height = bar[3]; |
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| 299 | var idx = bar[4]; |
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| 300 | |
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| 301 | /** |
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| 302 | * Show the tooltip if the event is onmousemove |
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| 303 | */ |
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| 304 | if (obj.Get('chart.tooltips.event') == 'onmousemove') { |
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| 305 | |
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| 306 | var tooltipObj = RGraph.Registry.Get('chart.tooltip'); |
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| 307 | |
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| 308 | /** |
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| 309 | * Get the tooltip text |
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| 310 | */ |
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| 311 | if (typeof(obj.Get('chart.tooltips')) == 'function') { |
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| 312 | var text = obj.Get('chart.tooltips')(idx); |
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| 313 | |
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| 314 | } else if (typeof(obj.Get('chart.tooltips')) == 'object' && typeof(obj.Get('chart.tooltips')[idx]) == 'function') { |
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| 315 | var text = obj.Get('chart.tooltips')[idx](idx); |
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| 316 | |
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| 317 | } else if (typeof(obj.Get('chart.tooltips')) == 'object') { |
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| 318 | var text = obj.Get('chart.tooltips')[idx]; |
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| 319 | |
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| 320 | } else { |
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| 321 | var text = null; |
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| 322 | } |
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| 323 | |
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| 324 | if (text) { |
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| 325 | if (!tooltipObj || tooltipObj.__index__ != idx) { |
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| 326 | |
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| 327 | RGraph.HideTooltip(); |
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| 328 | RGraph.Redraw(); |
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| 329 | |
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| 330 | obj.context.beginPath(); |
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| 331 | obj.context.strokeStyle = obj.Get('chart.highlight.stroke'); |
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| 332 | obj.context.fillStyle = obj.Get('chart.highlight.fill'); |
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| 333 | obj.context.strokeRect(left, top, width, height); |
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| 334 | obj.context.fillRect(left, top, width, height); |
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| 335 | |
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| 336 | RGraph.Tooltip(canvas, text, e.pageX, e.pageY, idx); |
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| 337 | } |
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| 338 | return; |
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| 339 | } |
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| 340 | } |
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| 341 | } |
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| 342 | |
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| 343 | if (!bar) { |
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| 344 | canvas.style.cursor = 'default'; |
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| 345 | } |
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| 346 | } |
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| 347 | this.canvas.addEventListener('mousemove', canvas_onmousemove_func, false); |
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| 348 | RGraph.AddEventListener(this.id, 'mousemove', canvas_onmousemove_func); |
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| 349 | |
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| 350 | |
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| 351 | /** |
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| 352 | * Install the onclick event handler for the tooltips |
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| 353 | */ |
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| 354 | //this.canvas.onclick = function (e) |
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| 355 | var canvas_onclick_func = function (e) |
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| 356 | { |
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| 357 | e = RGraph.FixEventObject(e); |
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| 358 | |
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| 359 | //var canvas = document.getElementById(this.id); |
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| 360 | var canvas = e.target; |
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| 361 | var obj = canvas.__object__; |
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| 362 | var bar = obj.getBar(e); |
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| 363 | |
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| 364 | /** |
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| 365 | * Redraw the graph first, in effect resetting the graph to as it was when it was first drawn |
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| 366 | * This "deselects" any already selected bar |
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| 367 | */ |
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| 368 | RGraph.Redraw(); |
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| 369 | |
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| 370 | /** |
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| 371 | * Get the mouse X/Y coordinates |
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| 372 | */ |
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| 373 | var mouseCoords = RGraph.getMouseXY(e); |
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| 374 | |
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| 375 | /******************************************************* |
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| 376 | * Only do this if a bar is being hovered over |
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| 377 | *******************************************************/ |
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| 378 | if (bar) { |
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| 379 | |
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| 380 | var left = bar[0]; |
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| 381 | var top = bar[1]; |
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| 382 | var width = bar[2]; |
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| 383 | var height = bar[3]; |
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| 384 | var idx = bar[4]; |
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| 385 | |
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| 386 | /** |
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| 387 | * Get the tooltip text |
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| 388 | */ |
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| 389 | if (typeof(obj.Get('chart.tooltips')) == 'function') { |
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| 390 | var text = obj.Get('chart.tooltips')(idx); |
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| 391 | |
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| 392 | } else if (typeof(obj.Get('chart.tooltips')) == 'object' && typeof(obj.Get('chart.tooltips')[idx]) == 'function') { |
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| 393 | var text = obj.Get('chart.tooltips')[idx](idx); |
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| 394 | |
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| 395 | } else if (typeof(obj.Get('chart.tooltips')) == 'object') { |
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| 396 | var text = obj.Get('chart.tooltips')[idx]; |
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| 397 | |
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| 398 | } else { |
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| 399 | var text = null; |
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| 400 | } |
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| 401 | |
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| 402 | /** |
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| 403 | * Show a tooltip if it's defined |
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| 404 | */ |
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| 405 | if (String(text).length && text != null) { |
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| 406 | |
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| 407 | obj.context.beginPath(); |
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| 408 | obj.context.strokeStyle = obj.Get('chart.highlight.stroke'); |
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| 409 | obj.context.fillStyle = obj.Get('chart.highlight.fill'); |
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| 410 | obj.context.strokeRect(left, top, width, height); |
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| 411 | obj.context.fillRect(left, top, width, height); |
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| 412 | |
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| 413 | obj.context.stroke(); |
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| 414 | obj.context.fill(); |
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| 415 | |
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| 416 | RGraph.Tooltip(canvas, text, e.pageX, e.pageY, idx); |
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| 417 | } |
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| 418 | } |
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| 419 | |
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| 420 | /** |
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| 421 | * Stop the event bubbling |
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| 422 | */ |
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| 423 | e.stopPropagation(); |
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| 424 | } |
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| 425 | this.canvas.addEventListener('click', canvas_onclick_func, false); |
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| 426 | RGraph.AddEventListener(this.id,'click', canvas_onclick_func); |
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| 427 | |
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| 428 | // This resets the bar graph |
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| 429 | if (RGraph.Registry.Get('chart.tooltip')) { |
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| 430 | RGraph.Registry.Get('chart.tooltip').style.display = 'none'; |
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| 431 | RGraph.Registry.Set('chart.tooltip', null) |
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| 432 | } |
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| 433 | } |
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| 434 | |
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| 435 | /** |
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| 436 | * Setup the context menu if required |
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| 437 | */ |
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| 438 | if (this.Get('chart.contextmenu')) { |
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| 439 | RGraph.ShowContext(this); |
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| 440 | } |
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| 441 | |
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| 442 | |
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| 443 | /** |
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| 444 | * Draw "in graph" labels |
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| 445 | */ |
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| 446 | RGraph.DrawInGraphLabels(this); |
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| 447 | |
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| 448 | /** |
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| 449 | * If the canvas is annotatable, do install the event handlers |
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| 450 | */ |
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| 451 | if (this.Get('chart.annotatable')) { |
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| 452 | RGraph.Annotate(this); |
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| 453 | } |
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| 454 | |
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| 455 | /** |
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| 456 | * This bit shows the mini zoom window if requested |
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| 457 | */ |
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| 458 | if (this.Get('chart.zoom.mode') == 'thumbnail' || this.Get('chart.zoom.mode') == 'area') { |
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| 459 | RGraph.ShowZoomWindow(this); |
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| 460 | } |
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| 461 | |
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| 462 | |
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| 463 | /** |
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| 464 | * This function enables resizing |
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| 465 | */ |
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| 466 | if (this.Get('chart.resizable')) { |
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| 467 | RGraph.AllowResizing(this); |
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| 468 | } |
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| 469 | |
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| 470 | |
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| 471 | /** |
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| 472 | * Fire the RGraph ondraw event |
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| 473 | */ |
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| 474 | RGraph.FireCustomEvent(this, 'ondraw'); |
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| 475 | } |
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| 476 | |
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| 477 | /** |
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| 478 | * This draws the axes |
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| 479 | */ |
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| 480 | RGraph.HBar.prototype.DrawAxes = function () |
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| 481 | { |
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| 482 | var halfway = (this.graphwidth / 2) + this.gutterLeft; |
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| 483 | |
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| 484 | this.context.beginPath(); |
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| 485 | this.context.lineWidth = 1; |
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| 486 | this.context.strokeStyle = this.Get('chart.axis.color'); |
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| 487 | |
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| 488 | // Draw the Y axis |
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| 489 | if (this.Get('chart.yaxispos') == 'center') { |
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| 490 | this.context.moveTo(halfway, this.gutterTop); |
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| 491 | this.context.lineTo(halfway, RGraph.GetHeight(this) - this.gutterBottom); |
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| 492 | } else { |
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| 493 | this.context.moveTo(this.gutterLeft, this.gutterTop); |
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| 494 | this.context.lineTo(this.gutterLeft, RGraph.GetHeight(this) - this.gutterBottom); |
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| 495 | } |
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| 496 | |
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| 497 | // Draw the X axis |
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| 498 | this.context.moveTo(this.gutterLeft, RGraph.GetHeight(this) - this.gutterBottom); |
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| 499 | this.context.lineTo(RGraph.GetWidth(this) - this.gutterRight, RGraph.GetHeight(this) - this.gutterBottom); |
---|
| 500 | |
---|
| 501 | // Draw the Y tickmarks |
---|
| 502 | var yTickGap = (RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) / this.data.length; |
---|
| 503 | |
---|
| 504 | for (y=this.gutterTop; y<(RGraph.GetHeight(this) - this.gutterBottom); y+=yTickGap) { |
---|
| 505 | if (this.Get('chart.yaxispos') == 'center') { |
---|
| 506 | this.context.moveTo(halfway + 3, y); |
---|
| 507 | this.context.lineTo(halfway - 3, y); |
---|
| 508 | } else { |
---|
| 509 | this.context.moveTo(this.gutterLeft, y); |
---|
| 510 | this.context.lineTo( this.gutterLeft - 3, y); |
---|
| 511 | } |
---|
| 512 | } |
---|
| 513 | |
---|
| 514 | |
---|
| 515 | // Draw the X tickmarks |
---|
| 516 | xTickGap = (RGraph.GetWidth(this) - this.gutterLeft - this.gutterRight ) / 10; |
---|
| 517 | yStart = RGraph.GetHeight(this) - this.gutterBottom; |
---|
| 518 | yEnd = (RGraph.GetHeight(this) - this.gutterBottom) + 3; |
---|
| 519 | |
---|
| 520 | for (x=(RGraph.GetWidth(this) - this.gutterRight), i=0; this.Get('chart.yaxispos') == 'center' ? x>=this.gutterLeft : x>this.gutterLeft; x-=xTickGap) { |
---|
| 521 | |
---|
| 522 | if (this.Get('chart.yaxispos') != 'center' || i != 5) { |
---|
| 523 | this.context.moveTo(x, yStart); |
---|
| 524 | this.context.lineTo(x, yEnd); |
---|
| 525 | } |
---|
| 526 | i++; |
---|
| 527 | } |
---|
| 528 | |
---|
| 529 | this.context.stroke(); |
---|
| 530 | } |
---|
| 531 | |
---|
| 532 | |
---|
| 533 | /** |
---|
| 534 | * This draws the labels for the graph |
---|
| 535 | */ |
---|
| 536 | RGraph.HBar.prototype.DrawLabels = function () |
---|
| 537 | { |
---|
| 538 | var context = this.context; |
---|
| 539 | var canvas = this.canvas; |
---|
| 540 | var units_pre = this.Get('chart.units.pre'); |
---|
| 541 | var units_post = this.Get('chart.units.post'); |
---|
| 542 | var text_size = this.Get('chart.text.size'); |
---|
| 543 | var font = this.Get('chart.text.font'); |
---|
| 544 | |
---|
| 545 | |
---|
| 546 | /** |
---|
| 547 | * Set the units to blank if they're to be used for ingraph labels only |
---|
| 548 | */ |
---|
| 549 | if (this.Get('chart.units.ingraph')) { |
---|
| 550 | units_pre = ''; |
---|
| 551 | units_post = ''; |
---|
| 552 | } |
---|
| 553 | |
---|
| 554 | |
---|
| 555 | /** |
---|
| 556 | * Draw the X axis labels |
---|
| 557 | */ |
---|
| 558 | if (this.Get('chart.xlabels')) { |
---|
| 559 | this.context.beginPath(); |
---|
| 560 | this.context.fillStyle = this.Get('chart.text.color'); |
---|
| 561 | |
---|
| 562 | if (this.Get('chart.yaxispos') == 'center') { |
---|
| 563 | RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (10/10)), this.gutterTop + this.halfTextHeight + this.graphheight + 2, RGraph.number_format(this, Number(this.scale[4]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center'); |
---|
| 564 | RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (9/10)), this.gutterTop + this.halfTextHeight + this.graphheight + 2, RGraph.number_format(this, Number(this.scale[3]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center'); |
---|
| 565 | RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (8/10)), this.gutterTop + this.halfTextHeight + this.graphheight + 2, RGraph.number_format(this, Number(this.scale[2]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center'); |
---|
| 566 | RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (7/10)), this.gutterTop + this.halfTextHeight + this.graphheight + 2, RGraph.number_format(this, Number(this.scale[1]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center'); |
---|
| 567 | RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (6/10)), this.gutterTop + this.halfTextHeight + this.graphheight + 2, RGraph.number_format(this, Number(this.scale[0]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center'); |
---|
| 568 | |
---|
| 569 | RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (4/10)), this.gutterTop + this.halfTextHeight + this.graphheight + 2, '-' + RGraph.number_format(this, Number(this.scale[0]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center'); |
---|
| 570 | RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (3/10)), this.gutterTop + this.halfTextHeight + this.graphheight + 2, '-' + RGraph.number_format(this, Number(this.scale[1]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center'); |
---|
| 571 | RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (2/10)), this.gutterTop + this.halfTextHeight + this.graphheight + 2, '-' + RGraph.number_format(this, Number(this.scale[2]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center'); |
---|
| 572 | RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (1/10)), this.gutterTop + this.halfTextHeight + this.graphheight + 2, '-' + RGraph.number_format(this, Number(this.scale[3]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center'); |
---|
| 573 | RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (0)), this.gutterTop + this.halfTextHeight + this.graphheight + 2, '-' + RGraph.number_format(this, Number(this.scale[4]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center'); |
---|
| 574 | |
---|
| 575 | } else { |
---|
| 576 | |
---|
| 577 | RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (5/5)), this.gutterTop + this.halfTextHeight + this.graphheight + 2, RGraph.number_format(this, Number(this.scale[4]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center'); |
---|
| 578 | RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (4/5)), this.gutterTop + this.halfTextHeight + this.graphheight + 2, RGraph.number_format(this, Number(this.scale[3]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center'); |
---|
| 579 | RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (3/5)), this.gutterTop + this.halfTextHeight + this.graphheight + 2, RGraph.number_format(this, Number(this.scale[2]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center'); |
---|
| 580 | RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (2/5)), this.gutterTop + this.halfTextHeight + this.graphheight + 2, RGraph.number_format(this, Number(this.scale[1]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center'); |
---|
| 581 | RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (1/5)), this.gutterTop + this.halfTextHeight + this.graphheight + 2, RGraph.number_format(this, Number(this.scale[0]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center'); |
---|
| 582 | |
---|
| 583 | if (this.Get('chart.xmin') > 0) { |
---|
| 584 | RGraph.Text(context,font,text_size,this.gutterLeft,this.gutterTop + this.halfTextHeight + this.graphheight + 2,RGraph.number_format(this, this.Get('chart.xmin'), units_pre, units_post),'center','center'); |
---|
| 585 | } |
---|
| 586 | } |
---|
| 587 | |
---|
| 588 | this.context.fill(); |
---|
| 589 | this.context.stroke(); |
---|
| 590 | } |
---|
| 591 | |
---|
| 592 | /** |
---|
| 593 | * The Y axis labels |
---|
| 594 | */ |
---|
| 595 | if (typeof(this.Get('chart.labels')) == 'object') { |
---|
| 596 | |
---|
| 597 | var xOffset = 5; |
---|
| 598 | var font = this.Get('chart.text.font'); |
---|
| 599 | |
---|
| 600 | // Draw the X axis labels |
---|
| 601 | this.context.fillStyle = this.Get('chart.text.color'); |
---|
| 602 | |
---|
| 603 | // How wide is each bar |
---|
| 604 | var barHeight = (RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom ) / this.Get('chart.labels').length; |
---|
| 605 | |
---|
| 606 | // Reset the xTickGap |
---|
| 607 | yTickGap = (RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) / this.Get('chart.labels').length |
---|
| 608 | |
---|
| 609 | // Draw the X tickmarks |
---|
| 610 | var i=0; |
---|
| 611 | for (y=this.gutterTop + (yTickGap / 2); y<=RGraph.GetHeight(this) - this.gutterBottom; y+=yTickGap) { |
---|
| 612 | RGraph.Text(this.context, font,this.Get('chart.text.size'),this.gutterLeft - xOffset,y,String(this.Get('chart.labels')[i++]),'center','right'); |
---|
| 613 | } |
---|
| 614 | } |
---|
| 615 | } |
---|
| 616 | |
---|
| 617 | |
---|
| 618 | /** |
---|
| 619 | * This function draws the actual bars |
---|
| 620 | */ |
---|
| 621 | RGraph.HBar.prototype.Drawbars = function () |
---|
| 622 | { |
---|
| 623 | this.context.lineWidth = 1; |
---|
| 624 | this.context.strokeStyle = this.Get('chart.strokestyle'); |
---|
| 625 | this.context.fillStyle = this.Get('chart.colors')[0]; |
---|
| 626 | var prevX = 0; |
---|
| 627 | var prevY = 0; |
---|
| 628 | |
---|
| 629 | /** |
---|
| 630 | * Work out the max value |
---|
| 631 | */ |
---|
| 632 | if (this.Get('chart.xmax')) { |
---|
| 633 | this.scale = [ |
---|
| 634 | (((this.Get('chart.xmax') - this.Get('chart.xmin')) * 0.2) + this.Get('chart.xmin')).toFixed(this.Get('chart.scale.decimals')), |
---|
| 635 | (((this.Get('chart.xmax') - this.Get('chart.xmin')) * 0.4) + this.Get('chart.xmin')).toFixed(this.Get('chart.scale.decimals')), |
---|
| 636 | (((this.Get('chart.xmax') - this.Get('chart.xmin')) * 0.6) + this.Get('chart.xmin')).toFixed(this.Get('chart.scale.decimals')), |
---|
| 637 | (((this.Get('chart.xmax') - this.Get('chart.xmin')) * 0.8) + this.Get('chart.xmin')).toFixed(this.Get('chart.scale.decimals')), |
---|
| 638 | (((this.Get('chart.xmax') - this.Get('chart.xmin')) + this.Get('chart.xmin'))).toFixed(this.Get('chart.scale.decimals')) |
---|
| 639 | ]; |
---|
| 640 | this.max = this.scale[4]; |
---|
| 641 | |
---|
| 642 | } else { |
---|
| 643 | |
---|
| 644 | var grouping = this.Get('chart.grouping'); |
---|
| 645 | |
---|
| 646 | for (i=0; i<this.data.length; ++i) { |
---|
| 647 | if (typeof(this.data[i]) == 'object') { |
---|
| 648 | var value = grouping == 'grouped' ? Number(RGraph.array_max(this.data[i], true)) : Number(RGraph.array_sum(this.data[i])) ; |
---|
| 649 | } else { |
---|
| 650 | var value = Number(Math.abs(this.data[i])); |
---|
| 651 | } |
---|
| 652 | |
---|
| 653 | this.max = Math.max(Math.abs(this.max), Math.abs(value)); |
---|
| 654 | } |
---|
| 655 | |
---|
| 656 | this.scale = RGraph.getScale(this.max, this); |
---|
| 657 | |
---|
| 658 | /** |
---|
| 659 | * Account for chart.xmin |
---|
| 660 | */ |
---|
| 661 | if (this.Get('chart.xmin') > 0) { |
---|
| 662 | this.scale[0] = Number((((this.scale[4] - this.Get('chart.xmin')) * 0.2) + this.Get('chart.xmin')).toFixed(this.Get('chart.scale.decimals'))); |
---|
| 663 | this.scale[1] = Number((((this.scale[4] - this.Get('chart.xmin')) * 0.4) + this.Get('chart.xmin')).toFixed(this.Get('chart.scale.decimals'))); |
---|
| 664 | this.scale[2] = Number((((this.scale[4] - this.Get('chart.xmin')) * 0.6) + this.Get('chart.xmin')).toFixed(this.Get('chart.scale.decimals'))); |
---|
| 665 | this.scale[3] = Number((((this.scale[4] - this.Get('chart.xmin')) * 0.8) + this.Get('chart.xmin')).toFixed(this.Get('chart.scale.decimals'))); |
---|
| 666 | this.scale[4] = Number((((this.scale[4] - this.Get('chart.xmin')) * 1.0) + this.Get('chart.xmin')).toFixed(this.Get('chart.scale.decimals'))); |
---|
| 667 | } |
---|
| 668 | |
---|
| 669 | this.max = this.scale[4]; |
---|
| 670 | } |
---|
| 671 | |
---|
| 672 | if (this.Get('chart.scale.decimals') == null && Number(this.max) == 1) { |
---|
| 673 | this.Set('chart.scale.decimals', 1); |
---|
| 674 | } |
---|
| 675 | |
---|
| 676 | /******************************************************* |
---|
| 677 | * This is here to facilitate sequential colors |
---|
| 678 | *******************************************************/ |
---|
| 679 | var colorIdx = 0; |
---|
| 680 | |
---|
| 681 | /** |
---|
| 682 | * The bars are drawn HERE |
---|
| 683 | */ |
---|
| 684 | var graphwidth = (this.canvas.width - this.gutterLeft - this.gutterRight); |
---|
| 685 | var halfwidth = graphwidth / 2; |
---|
| 686 | |
---|
| 687 | for (i=0; i<this.data.length; ++i) { |
---|
| 688 | |
---|
| 689 | // Work out the width and height |
---|
| 690 | var width = (this.data[i] / this.max) * graphwidth; |
---|
| 691 | var height = this.graphheight / this.data.length; |
---|
| 692 | |
---|
| 693 | var orig_height = height; |
---|
| 694 | |
---|
| 695 | var x = this.gutterLeft; |
---|
| 696 | var y = this.gutterTop + (i * height); |
---|
| 697 | var vmargin = this.Get('chart.vmargin'); |
---|
| 698 | |
---|
| 699 | // Account for negative lengths - Some browsers (eg Chrome) don't like a negative value |
---|
| 700 | if (width < 0) { |
---|
| 701 | x -= width; |
---|
| 702 | width = Math.abs(width); |
---|
| 703 | } |
---|
| 704 | |
---|
| 705 | /** |
---|
| 706 | * Turn on the shadow if need be |
---|
| 707 | */ |
---|
| 708 | if (this.Get('chart.shadow')) { |
---|
| 709 | this.context.shadowColor = this.Get('chart.shadow.color'); |
---|
| 710 | this.context.shadowBlur = this.Get('chart.shadow.blur'); |
---|
| 711 | this.context.shadowOffsetX = this.Get('chart.shadow.offsetx'); |
---|
| 712 | this.context.shadowOffsetY = this.Get('chart.shadow.offsety'); |
---|
| 713 | } |
---|
| 714 | |
---|
| 715 | /** |
---|
| 716 | * Draw the bar |
---|
| 717 | */ |
---|
| 718 | this.context.beginPath(); |
---|
| 719 | if (typeof(this.data[i]) == 'number') { |
---|
| 720 | |
---|
| 721 | var barHeight = height - (2 * vmargin); |
---|
| 722 | var barWidth = ((this.data[i] - this.Get('chart.xmin')) / (this.max - this.Get('chart.xmin'))) * this.graphwidth; |
---|
| 723 | var barX = this.gutterLeft; |
---|
| 724 | |
---|
| 725 | // Account for Y axis pos |
---|
| 726 | if (this.Get('chart.yaxispos') == 'center') { |
---|
| 727 | barWidth /= 2; |
---|
| 728 | barX += halfwidth; |
---|
| 729 | } |
---|
| 730 | |
---|
| 731 | // Set the fill color |
---|
| 732 | this.context.strokeStyle = this.Get('chart.strokestyle'); |
---|
| 733 | this.context.fillStyle = this.Get('chart.colors')[0]; |
---|
| 734 | |
---|
| 735 | // Sequential colors |
---|
| 736 | if (this.Get('chart.colors.sequential')) { |
---|
| 737 | this.context.fillStyle = this.Get('chart.colors')[colorIdx++]; |
---|
| 738 | } |
---|
| 739 | |
---|
| 740 | this.context.strokeRect(barX, this.gutterTop + (i * height) + this.Get('chart.vmargin'), barWidth, barHeight); |
---|
| 741 | this.context.fillRect(barX, this.gutterTop + (i * height) + this.Get('chart.vmargin'), barWidth, barHeight); |
---|
| 742 | |
---|
| 743 | this.coords.push([barX, |
---|
| 744 | y + vmargin, |
---|
| 745 | barWidth, |
---|
| 746 | height - (2 * vmargin), |
---|
| 747 | this.context.fillStyle, |
---|
| 748 | this.data[i], |
---|
| 749 | true]); |
---|
| 750 | |
---|
| 751 | /** |
---|
| 752 | * Stacked bar chart |
---|
| 753 | */ |
---|
| 754 | } else if (typeof(this.data[i]) == 'object' && this.Get('chart.grouping') == 'stacked') { |
---|
| 755 | |
---|
| 756 | if (this.Get('chart.yaxispos') == 'center') { |
---|
| 757 | alert('[HBAR] You can\'t have a stacked chart with the Y axis in the center, change it to grouped'); |
---|
| 758 | } |
---|
| 759 | |
---|
| 760 | var barHeight = height - (2 * vmargin); |
---|
| 761 | |
---|
| 762 | for (j=0; j<this.data[i].length; ++j) { |
---|
| 763 | |
---|
| 764 | |
---|
| 765 | // Set the fill/stroke colors |
---|
| 766 | this.context.strokeStyle = this.Get('chart.strokestyle'); |
---|
| 767 | this.context.fillStyle = this.Get('chart.colors')[j]; |
---|
| 768 | |
---|
| 769 | |
---|
| 770 | // Sequential colors |
---|
| 771 | if (this.Get('chart.colors.sequential')) { |
---|
| 772 | this.context.fillStyle = this.Get('chart.colors')[colorIdx++]; |
---|
| 773 | } |
---|
| 774 | |
---|
| 775 | |
---|
| 776 | var width = (((this.data[i][j]) / (this.max))) * this.graphwidth; |
---|
| 777 | var totalWidth = (RGraph.array_sum(this.data[i]) / this.max) * this.graphwidth; |
---|
| 778 | |
---|
| 779 | this.context.strokeRect(x, this.gutterTop + this.Get('chart.vmargin') + (this.graphheight / this.data.length) * i, width, height - (2 * vmargin) ); |
---|
| 780 | this.context.fillRect(x, this.gutterTop + this.Get('chart.vmargin') + (this.graphheight / this.data.length) * i, width, height - (2 * vmargin) ); |
---|
| 781 | |
---|
| 782 | /** |
---|
| 783 | * Store the coords for tooltips |
---|
| 784 | */ |
---|
| 785 | |
---|
| 786 | // The last property of this array is a boolean which tells you whether the value is the last or not |
---|
| 787 | this.coords.push([x, |
---|
| 788 | y + vmargin, |
---|
| 789 | width, |
---|
| 790 | height - (2 * vmargin), |
---|
| 791 | this.context.fillStyle, |
---|
| 792 | RGraph.array_sum(this.data[i]), |
---|
| 793 | j == (this.data[i].length - 1) |
---|
| 794 | ]); |
---|
| 795 | |
---|
| 796 | x += width; |
---|
| 797 | } |
---|
| 798 | |
---|
| 799 | /** |
---|
| 800 | * A grouped bar chart |
---|
| 801 | */ |
---|
| 802 | } else if (typeof(this.data[i]) == 'object' && this.Get('chart.grouping') == 'grouped') { |
---|
| 803 | |
---|
| 804 | for (j=0; j<this.data[i].length; ++j) { |
---|
| 805 | |
---|
| 806 | /** |
---|
| 807 | * Turn on the shadow if need be |
---|
| 808 | */ |
---|
| 809 | if (this.Get('chart.shadow')) { |
---|
| 810 | RGraph.SetShadow(this, this.Get('chart.shadow.color'), this.Get('chart.shadow.offsetx'), this.Get('chart.shadow.offsety'), this.Get('chart.shadow.blur')); |
---|
| 811 | } |
---|
| 812 | |
---|
| 813 | // Set the fill/stroke colors |
---|
| 814 | this.context.strokeStyle = this.Get('chart.strokestyle'); |
---|
| 815 | this.context.fillStyle = this.Get('chart.colors')[j]; |
---|
| 816 | |
---|
| 817 | |
---|
| 818 | // Sequential colors |
---|
| 819 | if (this.Get('chart.colors.sequential')) { |
---|
| 820 | this.context.fillStyle = this.Get('chart.colors')[colorIdx++]; |
---|
| 821 | } |
---|
| 822 | |
---|
| 823 | var width = ((this.data[i][j] - this.Get('chart.xmin')) / (this.max - this.Get('chart.xmin'))) * (RGraph.GetWidth(this) - this.gutterLeft - this.gutterRight ); |
---|
| 824 | var individualBarHeight = (height - (2 * vmargin)) / this.data[i].length; |
---|
| 825 | |
---|
| 826 | var startX = this.gutterLeft; |
---|
| 827 | var startY = y + vmargin + (j * individualBarHeight); |
---|
| 828 | |
---|
| 829 | // Account for the Y axis being in the middle |
---|
| 830 | if (this.Get('chart.yaxispos') == 'center') { |
---|
| 831 | width /= 2; |
---|
| 832 | startX += halfwidth; |
---|
| 833 | } |
---|
| 834 | |
---|
| 835 | if (width < 0) { |
---|
| 836 | startX += width; |
---|
| 837 | width *= -1; |
---|
| 838 | } |
---|
| 839 | |
---|
| 840 | this.context.strokeRect(startX, startY, width, individualBarHeight); |
---|
| 841 | this.context.fillRect(startX, startY, width, individualBarHeight); |
---|
| 842 | |
---|
| 843 | this.coords.push([startX, |
---|
| 844 | startY, |
---|
| 845 | width, |
---|
| 846 | individualBarHeight, |
---|
| 847 | this.context.fillStyle, |
---|
| 848 | this.data[i][j], |
---|
| 849 | true]); |
---|
| 850 | } |
---|
| 851 | } |
---|
| 852 | |
---|
| 853 | this.context.closePath(); |
---|
| 854 | } |
---|
| 855 | |
---|
| 856 | this.context.fill(); |
---|
| 857 | this.context.stroke(); |
---|
| 858 | |
---|
| 859 | |
---|
| 860 | |
---|
| 861 | /** |
---|
| 862 | * Now the bars are stroke()ed, turn off the shadow |
---|
| 863 | */ |
---|
| 864 | RGraph.NoShadow(this); |
---|
| 865 | |
---|
| 866 | this.RedrawBars(); |
---|
| 867 | } |
---|
| 868 | |
---|
| 869 | |
---|
| 870 | /** |
---|
| 871 | * This function goes over the bars after they been drawn, so that upwards shadows are underneath the bars |
---|
| 872 | */ |
---|
| 873 | RGraph.HBar.prototype.RedrawBars = function () |
---|
| 874 | { |
---|
| 875 | if (this.Get('chart.noredraw')) { |
---|
| 876 | return; |
---|
| 877 | } |
---|
| 878 | |
---|
| 879 | var coords = this.coords; |
---|
| 880 | |
---|
| 881 | var font = this.Get('chart.text.font'); |
---|
| 882 | var size = this.Get('chart.text.size'); |
---|
| 883 | var color = this.Get('chart.text.color'); |
---|
| 884 | |
---|
| 885 | RGraph.NoShadow(this); |
---|
| 886 | this.context.strokeStyle = this.Get('chart.strokestyle'); |
---|
| 887 | |
---|
| 888 | for (var i=0; i<coords.length; ++i) { |
---|
| 889 | |
---|
| 890 | if (this.Get('chart.shadow')) { |
---|
| 891 | this.context.beginPath(); |
---|
| 892 | this.context.strokeStyle = this.Get('chart.strokestyle'); |
---|
| 893 | this.context.fillStyle = coords[i][4]; |
---|
| 894 | this.context.lineWidth = 1; |
---|
| 895 | this.context.strokeRect(coords[i][0], coords[i][1], coords[i][2], coords[i][3]); |
---|
| 896 | this.context.fillRect(coords[i][0], coords[i][1], coords[i][2], coords[i][3]); |
---|
| 897 | this.context.fill(); |
---|
| 898 | this.context.stroke(); |
---|
| 899 | } |
---|
| 900 | |
---|
| 901 | /** |
---|
| 902 | * Draw labels "above" the bar |
---|
| 903 | */ |
---|
| 904 | if (this.Get('chart.labels.above') && coords[i][6]) { |
---|
| 905 | |
---|
| 906 | this.context.fillStyle = color; |
---|
| 907 | this.context.strokeStyle = 'black'; |
---|
| 908 | RGraph.NoShadow(this); |
---|
| 909 | |
---|
| 910 | var border = (coords[i][0] + coords[i][2] + 7 + this.context.measureText(this.Get('chart.units.pre') + this.coords[i][5] + this.Get('chart.units.post')).width) > RGraph.GetWidth(this) ? true : false; |
---|
| 911 | |
---|
| 912 | RGraph.Text(this.context, |
---|
| 913 | font, |
---|
| 914 | size, |
---|
| 915 | coords[i][0] + coords[i][2] + (border ? -5 : 5), |
---|
| 916 | coords[i][1] + (coords[i][3] / 2), |
---|
| 917 | RGraph.number_format(this, (this.coords[i][5]).toFixed(this.Get('chart.labels.above.decimals')), this.Get('chart.units.pre'), this.Get('chart.units.post')), |
---|
| 918 | 'center', |
---|
| 919 | border ? 'right' : 'left', |
---|
| 920 | border, |
---|
| 921 | null, |
---|
| 922 | border ? 'rgba(255,255,255,0.9)' : null); |
---|
| 923 | } |
---|
| 924 | } |
---|
| 925 | } |
---|
| 926 | |
---|
| 927 | |
---|
| 928 | /******************************************************* |
---|
| 929 | * This function can be used to get the appropriate bar information (if any) |
---|
| 930 | * |
---|
| 931 | * @param e Event object |
---|
| 932 | * @return Appriate bar information (if any) |
---|
| 933 | *******************************************************/ |
---|
| 934 | RGraph.HBar.prototype.getBar = function (e) |
---|
| 935 | { |
---|
| 936 | var obj = e.target.__object__; |
---|
| 937 | var canvas = obj.canvas; |
---|
| 938 | var context = obj.context; |
---|
| 939 | var mouseCoords = RGraph.getMouseXY(e); |
---|
| 940 | |
---|
| 941 | /** |
---|
| 942 | * Loop through the bars determining if the mouse is over a bar |
---|
| 943 | */ |
---|
| 944 | for (var i=0,len=obj.coords.length; i<len; i++) { |
---|
| 945 | |
---|
| 946 | var mouseX = mouseCoords[0]; // In relation to the canvas |
---|
| 947 | var mouseY = mouseCoords[1]; // In relation to the canvas |
---|
| 948 | var left = obj.coords[i][0]; |
---|
| 949 | var top = obj.coords[i][1]; |
---|
| 950 | var width = obj.coords[i][2]; |
---|
| 951 | var height = obj.coords[i][3]; |
---|
| 952 | var idx = i; |
---|
| 953 | |
---|
| 954 | if (mouseX >= left && mouseX <= (left + width) && mouseY >= top && mouseY <= (top + height) ) { |
---|
| 955 | return [left, top, width, height, idx]; |
---|
| 956 | } |
---|
| 957 | } |
---|
| 958 | } |
---|