[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 odometer constructor. Pass it the ID of the canvas tag, the start value of the odo, |
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| 19 | * the end value, and the value that the pointer should point to. |
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| 20 | * |
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| 21 | * @param string id The ID of the canvas tag |
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| 22 | * @param int start The start value of the Odo |
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| 23 | * @param int end The end value of the odo |
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| 24 | * @param int value The indicated value (what the needle points to) |
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| 25 | */ |
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| 26 | RGraph.Odometer = function (id, start, end, value) |
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| 27 | { |
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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('2d'); |
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| 31 | this.canvas.__object__ = this; |
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| 32 | this.type = 'odo'; |
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| 33 | this.isRGraph = true; |
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| 34 | this.start = start; |
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| 35 | this.end = end; |
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| 36 | this.value = value; |
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| 37 | |
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| 38 | |
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| 39 | /** |
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| 40 | * Compatibility with older browsers |
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| 41 | */ |
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| 42 | RGraph.OldBrowserCompat(this.context); |
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| 43 | |
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| 44 | |
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| 45 | this.properties = { |
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| 46 | 'chart.radius': null, |
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| 47 | 'chart.value.text': false, |
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| 48 | 'chart.needle.color': 'black', |
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| 49 | 'chart.needle.width': 2, |
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| 50 | 'chart.needle.head': true, |
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| 51 | 'chart.needle.tail': true, |
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| 52 | 'chart.needle.type': 'pointer', |
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| 53 | 'chart.needle.extra': [], |
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| 54 | 'chart.needle.triangle.border': '#aaa', |
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| 55 | 'chart.text.size': 10, |
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| 56 | 'chart.text.color': 'black', |
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| 57 | 'chart.text.font': 'Verdana', |
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| 58 | 'chart.green.max': end * 0.75, |
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| 59 | 'chart.red.min': end * 0.9, |
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| 60 | 'chart.green.color': 'green', |
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| 61 | 'chart.yellow.color': 'yellow', |
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| 62 | 'chart.red.color': 'red', |
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| 63 | 'chart.green.solid': false, |
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| 64 | 'chart.yellow.solid': false, |
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| 65 | 'chart.red.solid': false, |
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| 66 | 'chart.label.area': 35, |
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| 67 | 'chart.gutter.left': 25, |
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| 68 | 'chart.gutter.right': 25, |
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| 69 | 'chart.gutter.top': 25, |
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| 70 | 'chart.gutter.bottom': 25, |
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| 71 | 'chart.title': '', |
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| 72 | 'chart.title.background': null, |
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| 73 | 'chart.title.hpos': null, |
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| 74 | 'chart.title.vpos': null, |
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| 75 | 'chart.contextmenu': null, |
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| 76 | 'chart.linewidth': 1, |
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| 77 | 'chart.shadow.inner': false, |
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| 78 | 'chart.shadow.inner.color': 'black', |
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| 79 | 'chart.shadow.inner.offsetx': 3, |
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| 80 | 'chart.shadow.inner.offsety': 3, |
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| 81 | 'chart.shadow.inner.blur': 6, |
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| 82 | 'chart.shadow.outer': false, |
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| 83 | 'chart.shadow.outer.color': '#666', |
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| 84 | 'chart.shadow.outer.offsetx': 0, |
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| 85 | 'chart.shadow.outer.offsety': 0, |
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| 86 | 'chart.shadow.outer.blur': 15, |
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| 87 | 'chart.annotatable': false, |
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| 88 | 'chart.annotate.color': 'black', |
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| 89 | 'chart.scale.decimals': 0, |
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| 90 | 'chart.zoom.factor': 1.5, |
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| 91 | 'chart.zoom.fade.in': true, |
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| 92 | 'chart.zoom.fade.out': true, |
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| 93 | 'chart.zoom.hdir': 'right', |
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| 94 | 'chart.zoom.vdir': 'down', |
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| 95 | 'chart.zoom.frames': 10, |
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| 96 | 'chart.zoom.delay': 50, |
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| 97 | 'chart.zoom.shadow': true, |
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| 98 | 'chart.zoom.mode': 'canvas', |
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| 99 | 'chart.zoom.thumbnail.width': 75, |
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| 100 | 'chart.zoom.thumbnail.height': 75, |
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| 101 | 'chart.zoom.background': true, |
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| 102 | 'chart.zoom.action': 'zoom', |
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| 103 | 'chart.resizable': false, |
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| 104 | 'chart.resize.handle.adjust': [0,0], |
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| 105 | 'chart.resize.handle.background': null, |
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| 106 | 'chart.units.pre': '', |
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| 107 | 'chart.units.post': '', |
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| 108 | 'chart.border': false, |
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| 109 | 'chart.border.color1': '#BEBCB0', |
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| 110 | 'chart.border.color2': '#F0EFEA', |
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| 111 | 'chart.border.color3': '#BEBCB0', |
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| 112 | 'chart.tickmarks.highlighted': false, |
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| 113 | 'chart.zerostart': false, |
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| 114 | 'chart.labels': null, |
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| 115 | 'chart.units.pre': '', |
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| 116 | 'chart.units.post': '', |
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| 117 | 'chart.value.units.pre': '', |
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| 118 | 'chart.value.units.post': '', |
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| 119 | 'chart.key': [], |
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| 120 | 'chart.key.background': 'white', |
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| 121 | 'chart.key.position': 'graph', |
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| 122 | 'chart.key.shadow': false, |
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| 123 | 'chart.key.shadow.color': '#666', |
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| 124 | 'chart.key.shadow.blur': 3, |
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| 125 | 'chart.key.shadow.offsetx': 2, |
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| 126 | 'chart.key.shadow.offsety': 2, |
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| 127 | 'chart.key.position.gutter.boxed': true, |
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| 128 | 'chart.key.position.x': null, |
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| 129 | 'chart.key.position.y': null, |
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| 130 | 'chart.key.halign': 'right', |
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| 131 | 'chart.key.color.shape': 'square', |
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| 132 | 'chart.key.rounded': true, |
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| 133 | 'chart.key.text.size': 10, |
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| 134 | } |
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| 135 | } |
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| 136 | |
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| 137 | |
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| 138 | /** |
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| 139 | * A peudo setter |
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| 140 | * |
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| 141 | * @param name string The name of the property to set |
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| 142 | * @param value mixed The value of the property |
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| 143 | */ |
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| 144 | RGraph.Odometer.prototype.Set = function (name, value) |
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| 145 | { |
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| 146 | if (name == 'chart.needle.style') { |
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| 147 | alert('[RGRAPH] The RGraph property chart.needle.style has changed to chart.needle.color'); |
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| 148 | } |
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| 149 | |
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| 150 | if (name == 'chart.needle.thickness') { |
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| 151 | name = 'chart.needle.width'; |
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| 152 | } |
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| 153 | |
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| 154 | this.properties[name.toLowerCase()] = value; |
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| 155 | } |
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| 156 | |
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| 157 | |
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| 158 | /** |
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| 159 | * A getter |
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| 160 | * |
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| 161 | * @param name string The name of the property to get |
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| 162 | */ |
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| 163 | RGraph.Odometer.prototype.Get = function (name) |
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| 164 | { |
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| 165 | return this.properties[name.toLowerCase()]; |
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| 166 | } |
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| 167 | |
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| 168 | |
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| 169 | /** |
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| 170 | * Draws the odometer |
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| 171 | */ |
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| 172 | RGraph.Odometer.prototype.Draw = function () |
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| 173 | { |
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| 174 | /** |
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| 175 | * Fire the onbeforedraw event |
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| 176 | */ |
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| 177 | RGraph.FireCustomEvent(this, 'onbeforedraw'); |
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| 178 | |
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| 179 | |
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| 180 | /** |
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| 181 | * This is new in May 2011 and facilitates indiviual gutter settings, |
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| 182 | * eg chart.gutter.left |
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| 183 | */ |
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| 184 | this.gutterLeft = this.Get('chart.gutter.left'); |
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| 185 | this.gutterRight = this.Get('chart.gutter.right'); |
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| 186 | this.gutterTop = this.Get('chart.gutter.top'); |
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| 187 | this.gutterBottom = this.Get('chart.gutter.bottom'); |
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| 188 | |
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| 189 | // Work out a few things |
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| 190 | this.radius = Math.min((RGraph.GetWidth(this) - this.gutterLeft - this.gutterRight) / 2, (RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) / 2) - (this.Get('chart.border') ? 25 : 0); |
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| 191 | this.diameter = 2 * this.radius; |
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| 192 | this.centerx = RGraph.GetWidth(this) / 2; |
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| 193 | this.centery = RGraph.GetHeight(this) / 2; |
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| 194 | this.range = this.end - this.start; |
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| 195 | |
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| 196 | if (typeof(this.Get('chart.radius')) == 'number') { |
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| 197 | this.radius = this.Get('chart.radius'); |
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| 198 | } |
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| 199 | |
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| 200 | /** |
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| 201 | * Move the centerx if the key is defined |
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| 202 | */ |
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| 203 | if (this.Get('chart.key').length > 0 && this.canvas.width > this.canvas.height) { |
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| 204 | this.centerx = 5 + this.radius; |
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| 205 | } |
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| 206 | |
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| 207 | this.context.lineWidth = this.Get('chart.linewidth'); |
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| 208 | |
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| 209 | // Draw the background |
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| 210 | this.DrawBackground(); |
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| 211 | |
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| 212 | // And lastly, draw the labels |
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| 213 | this.DrawLabels(); |
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| 214 | |
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| 215 | // Draw the needle |
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| 216 | this.DrawNeedle(this.value, this.Get('chart.needle.color')); |
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| 217 | |
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| 218 | /** |
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| 219 | * Draw any extra needles |
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| 220 | */ |
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| 221 | if (this.Get('chart.needle.extra').length > 0) { |
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| 222 | for (var i=0; i<this.Get('chart.needle.extra').length; ++i) { |
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| 223 | var needle = this.Get('chart.needle.extra')[i]; |
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| 224 | this.DrawNeedle(needle[0], needle[1], needle[2]); |
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| 225 | } |
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| 226 | } |
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| 227 | |
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| 228 | /** |
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| 229 | * Draw the key if requested |
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| 230 | */ |
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| 231 | if (this.Get('chart.key').length > 0) { |
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| 232 | // Build a colors array out of the needle colors |
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| 233 | var colors = [this.Get('chart.needle.color')]; |
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| 234 | |
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| 235 | if (this.Get('chart.needle.extra').length > 0) { |
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| 236 | for (var i=0; i<this.Get('chart.needle.extra').length; ++i) { |
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| 237 | var needle = this.Get('chart.needle.extra')[i]; |
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| 238 | colors.push(needle[1]); |
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| 239 | } |
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| 240 | } |
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| 241 | |
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| 242 | RGraph.DrawKey(this, this.Get('chart.key'), colors); |
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| 243 | } |
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| 244 | |
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| 245 | |
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| 246 | /** |
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| 247 | * Setup the context menu if required |
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| 248 | */ |
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| 249 | if (this.Get('chart.contextmenu')) { |
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| 250 | RGraph.ShowContext(this); |
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| 251 | } |
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| 252 | |
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| 253 | /** |
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| 254 | * If the canvas is annotatable, do install the event handlers |
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| 255 | */ |
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| 256 | if (this.Get('chart.annotatable')) { |
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| 257 | RGraph.Annotate(this); |
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| 258 | } |
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| 259 | |
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| 260 | /** |
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| 261 | * This bit shows the mini zoom window if requested |
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| 262 | */ |
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| 263 | if (this.Get('chart.zoom.mode') == 'thumbnail' || this.Get('chart.zoom.mode') == 'area') { |
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| 264 | RGraph.ShowZoomWindow(this); |
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| 265 | } |
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| 266 | |
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| 267 | |
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| 268 | /** |
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| 269 | * This function enables resizing |
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| 270 | */ |
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| 271 | if (this.Get('chart.resizable')) { |
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| 272 | RGraph.AllowResizing(this); |
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| 273 | } |
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| 274 | |
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| 275 | /** |
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| 276 | * Fire the RGraph ondraw event |
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| 277 | */ |
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| 278 | RGraph.FireCustomEvent(this, 'ondraw'); |
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| 279 | } |
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| 280 | |
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| 281 | /** |
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| 282 | * Draws the background |
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| 283 | */ |
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| 284 | RGraph.Odometer.prototype.DrawBackground = function () |
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| 285 | { |
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| 286 | this.context.beginPath(); |
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| 287 | |
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| 288 | /** |
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| 289 | * Turn on the shadow if need be |
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| 290 | */ |
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| 291 | if (this.Get('chart.shadow.outer')) { |
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| 292 | RGraph.SetShadow(this, this.Get('chart.shadow.outer.color'), this.Get('chart.shadow.outer.offsetx'), this.Get('chart.shadow.outer.offsety'), this.Get('chart.shadow.outer.blur')); |
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| 293 | } |
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| 294 | |
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| 295 | var backgroundColor = '#eee'; |
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| 296 | |
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| 297 | // Draw the grey border |
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| 298 | this.context.fillStyle = backgroundColor; |
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| 299 | this.context.arc(this.centerx, this.centery, this.radius, 0.0001, 6.28, false); |
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| 300 | this.context.fill(); |
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| 301 | |
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| 302 | /** |
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| 303 | * Turn off the shadow |
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| 304 | */ |
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| 305 | RGraph.NoShadow(this); |
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| 306 | |
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| 307 | |
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| 308 | // Draw a circle |
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| 309 | this.context.strokeStyle = '#666'; |
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| 310 | this.context.arc(this.centerx, this.centery, this.radius, 0, 6.28, false); |
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| 311 | |
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| 312 | // Now draw a big white circle to make the lines appear as tick marks |
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| 313 | // This is solely for Chrome |
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| 314 | this.context.fillStyle = backgroundColor; |
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| 315 | this.context.arc(this.centerx, this.centery, this.radius, 0, 6.28, false); |
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| 316 | this.context.fill(); |
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| 317 | |
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| 318 | /** |
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| 319 | * Draw more tickmarks |
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| 320 | */ |
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| 321 | this.context.beginPath(); |
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| 322 | this.context.strokeStyle = '#bbb'; |
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| 323 | |
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| 324 | for (var i=0; i<=360; i+=3) { |
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| 325 | this.context.arc(this.centerx, this.centery, this.radius, 0, RGraph.degrees2Radians(i), false); |
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| 326 | this.context.lineTo(this.centerx, this.centery); |
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| 327 | } |
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| 328 | this.context.stroke(); |
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| 329 | |
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| 330 | this.context.beginPath(); |
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| 331 | this.context.lineWidth = 1; |
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| 332 | this.context.strokeStyle = 'black'; |
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| 333 | |
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| 334 | // Now draw a big white circle to make the lines appear as tick marks |
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| 335 | this.context.fillStyle = backgroundColor; |
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| 336 | this.context.strokeStyle = backgroundColor; |
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| 337 | this.context.arc(this.centerx, this.centery, this.radius - 5, 0, 6.28, false); |
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| 338 | this.context.fill(); |
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| 339 | this.context.stroke(); |
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| 340 | |
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| 341 | // Gray lines at 18 degree intervals |
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| 342 | this.context.beginPath(); |
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| 343 | this.context.strokeStyle = '#ddd'; |
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| 344 | for (var i=0; i<360; i+=18) { |
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| 345 | this.context.arc(this.centerx, this.centery, this.radius, 0, RGraph.degrees2Radians(i), false); |
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| 346 | this.context.lineTo(this.centerx, this.centery); |
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| 347 | } |
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| 348 | this.context.stroke(); |
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| 349 | |
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| 350 | // Redraw the outer circle |
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| 351 | this.context.beginPath(); |
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| 352 | this.context.strokeStyle = 'black'; |
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| 353 | this.context.arc(this.centerx, this.centery, this.radius, 0, 6.2830, false); |
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| 354 | this.context.stroke(); |
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| 355 | |
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| 356 | /** |
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| 357 | * Now draw the center bits shadow if need be |
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| 358 | */ |
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| 359 | if (this.Get('chart.shadow.inner')) { |
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| 360 | this.context.beginPath(); |
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| 361 | RGraph.SetShadow(this, this.Get('chart.shadow.inner.color'), this.Get('chart.shadow.inner.offsetx'), this.Get('chart.shadow.inner.offsety'), this.Get('chart.shadow.inner.blur')); |
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| 362 | this.context.arc(this.centerx, this.centery, this.radius - this.Get('chart.label.area'), 0, 6.28, 0); |
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| 363 | this.context.fill(); |
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| 364 | this.context.stroke(); |
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| 365 | |
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| 366 | /** |
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| 367 | * Turn off the shadow |
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| 368 | */ |
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| 369 | RGraph.NoShadow(this); |
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| 370 | } |
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| 371 | |
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| 372 | /******************************************************* |
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| 373 | * Draw the green area |
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| 374 | *******************************************************/ |
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| 375 | if (this.Get('chart.green.solid')) { |
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| 376 | var greengrad = this.Get('chart.green.color'); |
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| 377 | |
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| 378 | } else { |
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| 379 | var greengrad = this.context.createRadialGradient(this.centerx,this.centery,0,this.centerx,this.centery,this.radius); |
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| 380 | greengrad.addColorStop(0, 'white'); |
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| 381 | greengrad.addColorStop(1, this.Get('chart.green.color')); |
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| 382 | } |
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| 383 | |
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| 384 | // Draw the "tick highlight" |
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| 385 | if (this.Get('chart.tickmarks.highlighted')) { |
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| 386 | this.context.beginPath(); |
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| 387 | this.context.lineWidth = 5; |
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| 388 | this.context.strokeStyle = greengrad; |
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| 389 | this.context.arc(this.centerx, this.centery, this.radius - 2.5, |
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| 390 | |
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| 391 | -1.57, |
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| 392 | (((this.Get('chart.green.max') - this.start)/ (this.end - this.start)) * 6.2830) - 1.57, |
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| 393 | 0); |
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| 394 | |
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| 395 | this.context.stroke(); |
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| 396 | |
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| 397 | this.context.lineWidth = 1; |
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| 398 | } |
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| 399 | |
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| 400 | this.context.beginPath(); |
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| 401 | this.context.fillStyle = greengrad; |
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| 402 | this.context.arc( |
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| 403 | this.centerx, |
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| 404 | this.centery, |
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| 405 | this.radius - this.Get('chart.label.area'), |
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| 406 | -1.57, |
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| 407 | (((this.Get('chart.green.max') - this.start)/ (this.end - this.start)) * 6.2830) - 1.57, |
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| 408 | false |
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| 409 | ); |
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| 410 | this.context.lineTo(this.centerx, this.centery); |
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| 411 | this.context.closePath(); |
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| 412 | this.context.fill(); |
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| 413 | |
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| 414 | |
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| 415 | /******************************************************* |
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| 416 | * Draw the yellow area |
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| 417 | *******************************************************/ |
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| 418 | if (this.Get('chart.yellow.solid')) { |
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| 419 | var yellowgrad = this.Get('chart.yellow.color'); |
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| 420 | |
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| 421 | } else { |
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| 422 | var yellowgrad = this.context.createRadialGradient(this.centerx,this.centery,0,this.centerx,this.centery,this.radius); |
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| 423 | yellowgrad.addColorStop(0, 'white'); |
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| 424 | yellowgrad.addColorStop(1, this.Get('chart.yellow.color')); |
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| 425 | } |
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| 426 | |
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| 427 | // Draw the "tick highlight" |
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| 428 | if (this.Get('chart.tickmarks.highlighted')) { |
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| 429 | this.context.beginPath(); |
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| 430 | this.context.lineWidth = 5; |
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| 431 | this.context.strokeStyle = yellowgrad; |
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| 432 | this.context.arc(this.centerx, this.centery, this.radius - 2.5, ( |
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| 433 | |
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| 434 | ((this.Get('chart.green.max') - this.start) / (this.end - this.start)) * 6.2830) - 1.57, |
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| 435 | (((this.Get('chart.red.min') - this.start) / (this.end - this.start)) * 6.2830) - 1.57, |
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| 436 | 0); |
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| 437 | |
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| 438 | this.context.stroke(); |
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| 439 | |
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| 440 | this.context.lineWidth = 1; |
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| 441 | } |
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| 442 | |
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| 443 | this.context.beginPath(); |
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| 444 | this.context.fillStyle = yellowgrad; |
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| 445 | this.context.arc( |
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| 446 | this.centerx, |
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| 447 | this.centery, |
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| 448 | this.radius - this.Get('chart.label.area'), |
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| 449 | ( ((this.Get('chart.green.max') -this.start) / (this.end - this.start)) * 6.2830) - 1.57, |
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| 450 | ( ((this.Get('chart.red.min') - this.start) / (this.end - this.start)) * 6.2830) - 1.57, |
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| 451 | false |
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| 452 | ); |
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| 453 | this.context.lineTo(this.centerx, this.centery); |
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| 454 | this.context.closePath(); |
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| 455 | this.context.fill(); |
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| 456 | |
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| 457 | /******************************************************* |
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| 458 | * Draw the red area |
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| 459 | *******************************************************/ |
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| 460 | if (this.Get('chart.red.solid')) { |
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| 461 | var redgrad = this.Get('chart.red.color'); |
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| 462 | |
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| 463 | } else { |
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| 464 | var redgrad = this.context.createRadialGradient(this.centerx, |
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| 465 | this.centery, |
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| 466 | 0, |
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| 467 | this.centerx, |
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| 468 | this.centery, |
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| 469 | this.radius); |
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| 470 | redgrad.addColorStop(0, 'white'); |
---|
| 471 | redgrad.addColorStop(1, this.Get('chart.red.color')); |
---|
| 472 | } |
---|
| 473 | |
---|
| 474 | |
---|
| 475 | // Draw the "tick highlight" |
---|
| 476 | if (this.Get('chart.tickmarks.highlighted')) { |
---|
| 477 | this.context.beginPath(); |
---|
| 478 | this.context.lineWidth = 5; |
---|
| 479 | this.context.strokeStyle = redgrad; |
---|
| 480 | this.context.arc(this.centerx, this.centery, this.radius - 2.5,(((this.Get('chart.red.min') - this.start) / (this.end - this.start)) * 6.2830) - 1.57,(2 * Math.PI) - (0.5 * Math.PI),0); |
---|
| 481 | this.context.stroke(); |
---|
| 482 | |
---|
| 483 | this.context.lineWidth = 1; |
---|
| 484 | } |
---|
| 485 | |
---|
| 486 | this.context.beginPath(); |
---|
| 487 | this.context.fillStyle = redgrad; |
---|
| 488 | this.context.strokeStyle = redgrad; |
---|
| 489 | this.context.arc( |
---|
| 490 | this.centerx, |
---|
| 491 | this.centery, |
---|
| 492 | this.radius - this.Get('chart.label.area'), |
---|
| 493 | (((this.Get('chart.red.min') - this.start) / (this.end - this.start)) * 6.2830) - 1.57, |
---|
| 494 | 6.2830 - (0.25 * 6.2830), |
---|
| 495 | false |
---|
| 496 | ); |
---|
| 497 | this.context.lineTo(this.centerx, this.centery); |
---|
| 498 | this.context.closePath(); |
---|
| 499 | this.context.fill(); |
---|
| 500 | |
---|
| 501 | |
---|
| 502 | /** |
---|
| 503 | * Draw the thick border |
---|
| 504 | */ |
---|
| 505 | if (this.Get('chart.border')) { |
---|
| 506 | var grad = this.context.createRadialGradient(this.centerx, this.centery, this.radius, this.centerx, this.centery, this.radius + 15); |
---|
| 507 | grad.addColorStop(1, this.Get('chart.border.color1')); |
---|
| 508 | grad.addColorStop(0.5, this.Get('chart.border.color2')); |
---|
| 509 | grad.addColorStop(0, this.Get('chart.border.color3')); |
---|
| 510 | |
---|
| 511 | this.context.beginPath(); |
---|
| 512 | this.context.fillStyle = grad; |
---|
| 513 | this.context.strokeStyle = grad; |
---|
| 514 | this.context.lineWidth = 22; |
---|
| 515 | this.context.lineCap = 'round'; |
---|
| 516 | this.context.arc(this.centerx, this.centery, this.radius + 9, 0, 6.2830, 0); |
---|
| 517 | this.context.stroke(); |
---|
| 518 | } |
---|
| 519 | |
---|
| 520 | // Put the linewidth back to what it was |
---|
| 521 | this.context.lineWidth = this.Get('chart.linewidth'); |
---|
| 522 | |
---|
| 523 | |
---|
| 524 | /** |
---|
| 525 | * Draw the title if specified |
---|
| 526 | */ |
---|
| 527 | if (this.Get('chart.title')) { |
---|
| 528 | RGraph.DrawTitle(this.canvas, |
---|
| 529 | this.Get('chart.title'), |
---|
| 530 | this.centery - this.radius, |
---|
| 531 | null, |
---|
| 532 | this.Get('chart.text.size') + 2); |
---|
| 533 | } |
---|
| 534 | |
---|
| 535 | |
---|
| 536 | // Draw the big tick marks |
---|
| 537 | if (!this.Get('chart.tickmarks.highlighted')) { |
---|
| 538 | for (var i=18; i<=360; i+=36) { |
---|
| 539 | this.context.beginPath(); |
---|
| 540 | this.context.strokeStyle = '#999'; |
---|
| 541 | this.context.lineWidth = 2; |
---|
| 542 | this.context.arc(this.centerx, this.centery, this.radius - 1, RGraph.degrees2Radians(i), RGraph.degrees2Radians(i+0.01), false); |
---|
| 543 | this.context.arc(this.centerx, this.centery, this.radius - 7, RGraph.degrees2Radians(i), RGraph.degrees2Radians(i+0.01), false); |
---|
| 544 | this.context.stroke(); |
---|
| 545 | } |
---|
| 546 | } |
---|
| 547 | } |
---|
| 548 | |
---|
| 549 | |
---|
| 550 | /** |
---|
| 551 | * Draws the needle of the odometer |
---|
| 552 | * |
---|
| 553 | * @param number value The value to represent |
---|
| 554 | * @param string color The color of the needle |
---|
| 555 | * @param number The OPTIONAL length of the needle |
---|
| 556 | */ |
---|
| 557 | RGraph.Odometer.prototype.DrawNeedle = function (value, color) |
---|
| 558 | { |
---|
| 559 | // The optional length of the needle |
---|
| 560 | var length = arguments[2] ? arguments[2] : this.radius - this.Get('chart.label.area'); |
---|
| 561 | |
---|
| 562 | // ===== First draw a grey background circle ===== |
---|
| 563 | |
---|
| 564 | this.context.fillStyle = '#999'; |
---|
| 565 | |
---|
| 566 | this.context.beginPath(); |
---|
| 567 | this.context.moveTo(this.centerx, this.centery); |
---|
| 568 | this.context.arc(this.centerx, this.centery, 10, 0, 6.28, false); |
---|
| 569 | this.context.fill(); |
---|
| 570 | this.context.closePath(); |
---|
| 571 | |
---|
| 572 | this.context.fill(); |
---|
| 573 | |
---|
| 574 | // =============================================== |
---|
| 575 | |
---|
| 576 | this.context.fillStyle = color |
---|
| 577 | this.context.strokeStyle = '#666'; |
---|
| 578 | |
---|
| 579 | // Draw the centre bit |
---|
| 580 | this.context.beginPath(); |
---|
| 581 | this.context.moveTo(this.centerx, this.centery); |
---|
| 582 | this.context.arc(this.centerx, this.centery, 8, 0, 6.28, false); |
---|
| 583 | this.context.fill(); |
---|
| 584 | this.context.closePath(); |
---|
| 585 | |
---|
| 586 | this.context.stroke(); |
---|
| 587 | this.context.fill(); |
---|
| 588 | |
---|
| 589 | if (this.Get('chart.needle.type') == 'pointer') { |
---|
| 590 | |
---|
| 591 | this.context.strokeStyle = color; |
---|
| 592 | this.context.lineWidth = this.Get('chart.needle.width'); |
---|
| 593 | this.context.lineCap = 'round'; |
---|
| 594 | this.context.lineJoin = 'round'; |
---|
| 595 | |
---|
| 596 | // Draw the needle |
---|
| 597 | this.context.beginPath(); |
---|
| 598 | // The trailing bit on the opposite side of the dial |
---|
| 599 | this.context.beginPath(); |
---|
| 600 | this.context.moveTo(this.centerx, this.centery); |
---|
| 601 | |
---|
| 602 | if (this.Get('chart.needle.tail')) { |
---|
| 603 | |
---|
| 604 | this.context.arc(this.centerx, |
---|
| 605 | this.centery, |
---|
| 606 | 20, |
---|
| 607 | (((value / this.range) * 360) + 90) / 57.3, |
---|
| 608 | (((value / this.range) * 360) + 90 + 0.01) / 57.3, // The 0.01 avoids a bug in ExCanvas and Chrome 6 |
---|
| 609 | false |
---|
| 610 | ); |
---|
| 611 | } |
---|
| 612 | |
---|
| 613 | // Draw the long bit on the opposite side |
---|
| 614 | this.context.arc(this.centerx, |
---|
| 615 | this.centery, |
---|
| 616 | length - 10, |
---|
| 617 | (((value / this.range) * 360) - 90) / 57.3, |
---|
| 618 | (((value / this.range) * 360) - 90 + 0.1 ) / 57.3, // The 0.1 avoids a bug in ExCanvas and Chrome 6 |
---|
| 619 | false |
---|
| 620 | ); |
---|
| 621 | this.context.closePath(); |
---|
| 622 | |
---|
| 623 | //this.context.stroke(); |
---|
| 624 | //this.context.fill(); |
---|
| 625 | |
---|
| 626 | |
---|
| 627 | } else if (this.Get('chart.needle.type') == 'triangle') { |
---|
| 628 | |
---|
| 629 | this.context.lineWidth = 0.01; |
---|
| 630 | this.context.lineEnd = 'square'; |
---|
| 631 | this.context.lineJoin = 'miter'; |
---|
| 632 | |
---|
| 633 | /** |
---|
| 634 | * This draws the version of the pointer that becomes the border |
---|
| 635 | */ |
---|
| 636 | this.context.beginPath(); |
---|
| 637 | this.context.fillStyle = this.Get('chart.needle.triangle.border'); |
---|
| 638 | this.context.arc(this.centerx, this.centery, 11, (((value / this.range) * 360)) / 57.3, ((((value / this.range) * 360)) + 0.01) / 57.3, 0); |
---|
| 639 | this.context.arc(this.centerx, this.centery, 11, (((value / this.range) * 360) + 180) / 57.3, ((((value / this.range) * 360) + 180) + 0.01)/ 57.3, 0); |
---|
| 640 | this.context.arc(this.centerx, this.centery, length - 5, (((value / this.range) * 360) - 90) / 57.3, ((((value / this.range) * 360) - 90) / 57.3) + 0.01, 0); |
---|
| 641 | this.context.closePath(); |
---|
| 642 | this.context.fill(); |
---|
| 643 | |
---|
| 644 | this.context.beginPath(); |
---|
| 645 | this.context.arc(this.centerx, this.centery, 15, 0, 6.28, 0); |
---|
| 646 | this.context.closePath(); |
---|
| 647 | this.context.fill(); |
---|
| 648 | |
---|
| 649 | // This draws the pointer |
---|
| 650 | this.context.beginPath(); |
---|
| 651 | this.context.strokeStyle = 'black'; |
---|
| 652 | this.context.fillStyle = color; |
---|
| 653 | this.context.arc(this.centerx, this.centery, 7, (((value / this.range) * 360)) / 57.3, ((((value / this.range) * 360)) + 0.01) / 57.3, 0); |
---|
| 654 | this.context.arc(this.centerx, this.centery, 7, (((value / this.range) * 360) + 180) / 57.3, ((((value / this.range) * 360) + 180) + 0.01)/ 57.3, 0); |
---|
| 655 | this.context.arc(this.centerx, this.centery, length - 13, (((value / this.range) * 360) - 90) / 57.3, ((((value / this.range) * 360) - 90) / 57.3) + 0.01, 0); |
---|
| 656 | this.context.closePath(); |
---|
| 657 | this.context.stroke(); |
---|
| 658 | this.context.fill(); |
---|
| 659 | |
---|
| 660 | /** |
---|
| 661 | * This is here to accomodate the MSIE/ExCanvas combo |
---|
| 662 | */ |
---|
| 663 | this.context.beginPath(); |
---|
| 664 | this.context.arc(this.centerx, this.centery, 7, 0, 6.28, 0); |
---|
| 665 | this.context.closePath(); |
---|
| 666 | this.context.fill(); |
---|
| 667 | } |
---|
| 668 | |
---|
| 669 | |
---|
| 670 | this.context.stroke(); |
---|
| 671 | this.context.fill(); |
---|
| 672 | |
---|
| 673 | // Draw the mini center circle |
---|
| 674 | this.context.beginPath(); |
---|
| 675 | this.context.fillStyle = color; |
---|
| 676 | this.context.arc(this.centerx, this.centery, this.Get('chart.needle.type') == 'pointer' ? 7 : 12, 0.01, 6.2830, false); |
---|
| 677 | this.context.fill(); |
---|
| 678 | |
---|
| 679 | // This draws the arrow at the end of the line |
---|
| 680 | if (this.Get('chart.needle.head') && this.Get('chart.needle.type') == 'pointer') { |
---|
| 681 | this.context.lineWidth = 1; |
---|
| 682 | this.context.fillStyle = color; |
---|
| 683 | |
---|
| 684 | // round, bevel, miter |
---|
| 685 | this.context.lineJoin = 'miter'; |
---|
| 686 | this.context.lineCap = 'butt'; |
---|
| 687 | |
---|
| 688 | this.context.beginPath(); |
---|
| 689 | this.context.arc(this.centerx, this.centery, length - 5, (((value / this.range) * 360) - 90) / 57.3, (((value / this.range) * 360) - 90 + 0.1) / 57.3, false); |
---|
| 690 | |
---|
| 691 | this.context.arc(this.centerx, |
---|
| 692 | this.centery, |
---|
| 693 | length - 20, |
---|
| 694 | RGraph.degrees2Radians( ((value / this.range) * 360) - (length < 60 ? 80 : 85) ), |
---|
| 695 | RGraph.degrees2Radians( ((value / this.range) * 360) - (length < 60 ? 100 : 95) ), |
---|
| 696 | 1); |
---|
| 697 | this.context.closePath(); |
---|
| 698 | |
---|
| 699 | this.context.fill(); |
---|
| 700 | //this.context.stroke(); |
---|
| 701 | } |
---|
| 702 | |
---|
| 703 | /** |
---|
| 704 | * Draw a white circle at the centre |
---|
| 705 | */ |
---|
| 706 | this.context.beginPath(); |
---|
| 707 | this.context.fillStyle = 'gray'; |
---|
| 708 | this.context.moveTo(this.centerx, this.centery); |
---|
| 709 | this.context.arc(this.centerx,this.centery,2,0,6.2795,false); |
---|
| 710 | this.context.closePath(); |
---|
| 711 | |
---|
| 712 | this.context.fill(); |
---|
| 713 | } |
---|
| 714 | |
---|
| 715 | /** |
---|
| 716 | * Draws the labels for the Odo |
---|
| 717 | */ |
---|
| 718 | RGraph.Odometer.prototype.DrawLabels = function () |
---|
| 719 | { |
---|
| 720 | var context = this.context; |
---|
| 721 | var size = this.Get('chart.text.size'); |
---|
| 722 | var font = this.Get('chart.text.font'); |
---|
| 723 | var centerx = this.centerx; |
---|
| 724 | var centery = this.centery; |
---|
| 725 | var r = this.radius - (this.Get('chart.label.area') / 2); |
---|
| 726 | var start = this.start; |
---|
| 727 | var end = this.end; |
---|
| 728 | var decimals = this.Get('chart.scale.decimals'); |
---|
| 729 | var labels = this.Get('chart.labels'); |
---|
| 730 | var units_pre = this.Get('chart.units.pre'); |
---|
| 731 | var units_post = this.Get('chart.units.post'); |
---|
| 732 | |
---|
| 733 | context.beginPath(); |
---|
| 734 | context.fillStyle = this.Get('chart.text.color'); |
---|
| 735 | |
---|
| 736 | /** |
---|
| 737 | * If label are specified, use those |
---|
| 738 | */ |
---|
| 739 | if (labels) { |
---|
| 740 | for (var i=0; i<labels.length; ++i) { |
---|
| 741 | |
---|
| 742 | RGraph.Text(context, |
---|
| 743 | font, |
---|
| 744 | size, |
---|
| 745 | centerx + (Math.cos(((i / labels.length) * 6.28) - 1.57) * (this.radius - (this.Get('chart.label.area') / 2) ) ), // Sin A = Opp / Hyp |
---|
| 746 | centery + (Math.sin(((i / labels.length) * 6.28) - 1.57) * (this.radius - (this.Get('chart.label.area') / 2) ) ), // Cos A = Adj / Hyp |
---|
| 747 | String(units_pre + labels[i] + units_post), |
---|
| 748 | 'center', |
---|
| 749 | 'center'); |
---|
| 750 | } |
---|
| 751 | |
---|
| 752 | /** |
---|
| 753 | * If not, use the maximum value |
---|
| 754 | */ |
---|
| 755 | } else { |
---|
| 756 | RGraph.Text(context, font, size, centerx + (0.588 * r ), centery - (0.809 * r ), String(units_pre + (((end - start) * (1/10)) + start).toFixed(decimals) + units_post), 'center', 'center', false, 36); |
---|
| 757 | RGraph.Text(context, font, size, centerx + (0.951 * r ), centery - (0.309 * r), String(units_pre + (((end - start) * (2/10)) + start).toFixed(decimals) + units_post), 'center', 'center', false, 72); |
---|
| 758 | RGraph.Text(context, font, size, centerx + (0.949 * r), centery + (0.287 * r), String(units_pre + (((end - start) * (3/10)) + start).toFixed(decimals) + units_post), 'center', 'center', false, 108); |
---|
| 759 | RGraph.Text(context, font, size, centerx + (0.588 * r ), centery + (0.809 * r ), String(units_pre + (((end - start) * (4/10)) + start).toFixed(decimals) + units_post), 'center', 'center', false, 144); |
---|
| 760 | RGraph.Text(context, font, size, centerx, centery + r, String(units_pre + (((end - start) * (5/10)) + start).toFixed(decimals) + units_post), 'center', 'center', false, 180); |
---|
| 761 | RGraph.Text(context, font, size, centerx - (0.588 * r ), centery + (0.809 * r ), String(units_pre + (((end - start) * (6/10)) + start).toFixed(decimals) + units_post), 'center', 'center', false, 216); |
---|
| 762 | RGraph.Text(context, font, size, centerx - (0.949 * r), centery + (0.300 * r), a = String(units_pre + (((end - start) * (7/10)) + start).toFixed(decimals) + units_post), 'center', 'center', false, 252); |
---|
| 763 | RGraph.Text(context, font, size, centerx - (0.951 * r), centery - (0.309 * r), String(units_pre + (((end - start) * (8/10)) + start).toFixed(decimals) + units_post), 'center', 'center', false, 288); |
---|
| 764 | RGraph.Text(context, font, size, centerx - (0.588 * r ), centery - (0.809 * r ), String(units_pre + (((end - start) * (9/10)) + start).toFixed(decimals) + units_post), 'center', 'center', false, 324); |
---|
| 765 | RGraph.Text(context, font, size, centerx, centery - r, this.Get('chart.zerostart') ? units_pre + String(this.start) + units_post : String(units_pre + (((end - start) * (10/10)) + start).toFixed(decimals) + units_post), 'center', 'center', false, 360); |
---|
| 766 | } |
---|
| 767 | |
---|
| 768 | this.context.fill(); |
---|
| 769 | |
---|
| 770 | /** |
---|
| 771 | * Draw the text label below the center point |
---|
| 772 | */ |
---|
| 773 | if (this.Get('chart.value.text')) { |
---|
| 774 | context.strokeStyle = 'black'; |
---|
| 775 | RGraph.Text(context, font, size + 2, centerx, centery + size + 2 + 10, String(this.Get('chart.value.units.pre') + this.value + this.Get('chart.value.units.post')), 'center', 'center', true, null, 'white'); |
---|
| 776 | } |
---|
| 777 | } |
---|