[77] | 1 | 7 /** |
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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 gantt chart constructor |
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| 19 | * |
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| 20 | * @param object canvas The cxanvas object |
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| 21 | * @param array data The chart data |
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| 22 | */ |
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| 23 | RGraph.Gantt = function (id) |
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| 24 | { |
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| 25 | // Get the canvas and context objects |
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| 26 | this.id = id; |
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| 27 | this.canvas = document.getElementById(id); |
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| 28 | this.context = this.canvas.getContext("2d"); |
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| 29 | this.canvas.__object__ = this; |
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| 30 | this.type = 'gantt'; |
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| 31 | this.isRGraph = true; |
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| 32 | |
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| 33 | |
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| 34 | /** |
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| 35 | * Compatibility with older browsers |
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| 36 | */ |
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| 37 | RGraph.OldBrowserCompat(this.context); |
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| 38 | |
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| 39 | |
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| 40 | // Set some defaults |
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| 41 | this.properties = { |
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| 42 | 'chart.background.barcolor1': 'white', |
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| 43 | 'chart.background.barcolor2': 'white', |
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| 44 | 'chart.background.grid': true, |
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| 45 | 'chart.background.grid.width': 1, |
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| 46 | 'chart.background.grid.color': '#ddd', |
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| 47 | 'chart.background.grid.hsize': 20, |
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| 48 | 'chart.background.grid.vsize': 20, |
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| 49 | 'chart.background.grid.hlines': true, |
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| 50 | 'chart.background.grid.vlines': true, |
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| 51 | 'chart.background.grid.border': true, |
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| 52 | 'chart.background.grid.autofit':false, |
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| 53 | 'chart.background.grid.autofit.numhlines': 7, |
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| 54 | 'chart.background.grid.autofit.numvlines': 20, |
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| 55 | 'chart.background.vbars': [], |
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| 56 | 'chart.text.size': 10, |
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| 57 | 'chart.text.font': 'Verdana', |
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| 58 | 'chart.text.color': 'black', |
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| 59 | 'chart.gutter.left': 75, |
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| 60 | 'chart.gutter.right': 25, |
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| 61 | 'chart.gutter.top': 35, |
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| 62 | 'chart.gutter.bottom': 25, |
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| 63 | 'chart.labels': [], |
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| 64 | 'chart.margin': 2, |
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| 65 | 'chart.title': '', |
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| 66 | 'chart.title.background': null, |
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| 67 | 'chart.title.hpos': null, |
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| 68 | 'chart.title.vpos': null, |
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| 69 | 'chart.title.yaxis': '', |
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| 70 | 'chart.title.yaxis.pos': this.canvas.width - 12.5, |
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| 71 | 'chart.title.yaxis.position': 'right', |
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| 72 | 'chart.events': [], |
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| 73 | 'chart.borders': true, |
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| 74 | 'chart.defaultcolor': 'white', |
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| 75 | 'chart.coords': [], |
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| 76 | 'chart.tooltips': [], |
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| 77 | 'chart.tooltips.effect': 'fade', |
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| 78 | 'chart.tooltips.css.class': 'RGraph_tooltip', |
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| 79 | 'chart.tooltips.highlight': true, |
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| 80 | 'chart.highlight.stroke': 'black', |
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| 81 | 'chart.highlight.fill': 'rgba(255,255,255,0.5)', |
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| 82 | 'chart.xmin': 0, |
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| 83 | 'chart.xmax': 0, |
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| 84 | 'chart.contextmenu': null, |
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| 85 | 'chart.annotatable': false, |
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| 86 | 'chart.annotate.color': 'black', |
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| 87 | 'chart.zoom.factor': 1.5, |
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| 88 | 'chart.zoom.fade.in': true, |
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| 89 | 'chart.zoom.fade.out': true, |
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| 90 | 'chart.zoom.hdir': 'right', |
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| 91 | 'chart.zoom.vdir': 'down', |
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| 92 | 'chart.zoom.frames': 10, |
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| 93 | 'chart.zoom.delay': 50, |
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| 94 | 'chart.zoom.shadow': true, |
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| 95 | 'chart.zoom.mode': 'canvas', |
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| 96 | 'chart.zoom.thumbnail.width': 75, |
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| 97 | 'chart.zoom.thumbnail.height': 75, |
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| 98 | 'chart.zoom.background': true, |
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| 99 | 'chart.zoom.action': 'zoom', |
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| 100 | 'chart.resizable': false, |
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| 101 | 'chart.resize.handle.adjust': [0,0], |
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| 102 | 'chart.resize.handle.background': null, |
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| 103 | 'chart.adjustable': false |
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| 104 | } |
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| 105 | } |
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| 106 | |
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| 107 | |
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| 108 | /** |
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| 109 | * A peudo setter |
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| 110 | * |
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| 111 | * @param name string The name of the property to set |
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| 112 | * @param value mixed The value of the property |
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| 113 | */ |
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| 114 | RGraph.Gantt.prototype.Set = function (name, value) |
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| 115 | { |
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| 116 | this.properties[name.toLowerCase()] = value; |
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| 117 | } |
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| 118 | |
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| 119 | |
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| 120 | /** |
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| 121 | * A peudo getter |
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| 122 | * |
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| 123 | * @param name string The name of the property to get |
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| 124 | */ |
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| 125 | RGraph.Gantt.prototype.Get = function (name) |
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| 126 | { |
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| 127 | return this.properties[name.toLowerCase()]; |
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| 128 | } |
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| 129 | |
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| 130 | |
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| 131 | /** |
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| 132 | * Draws the chart |
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| 133 | */ |
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| 134 | RGraph.Gantt.prototype.Draw = function () |
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| 135 | { |
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| 136 | /** |
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| 137 | * Fire the onbeforedraw event |
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| 138 | */ |
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| 139 | RGraph.FireCustomEvent(this, 'onbeforedraw'); |
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| 140 | |
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| 141 | /** |
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| 142 | * Clear all of this canvases event handlers (the ones installed by RGraph) |
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| 143 | */ |
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| 144 | RGraph.ClearEventListeners(this.id); |
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| 145 | |
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| 146 | /** |
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| 147 | * This is new in May 2011 and facilitates indiviual gutter settings, |
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| 148 | * eg chart.gutter.left |
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| 149 | */ |
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| 150 | this.gutterLeft = this.Get('chart.gutter.left'); |
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| 151 | this.gutterRight = this.Get('chart.gutter.right'); |
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| 152 | this.gutterTop = this.Get('chart.gutter.top'); |
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| 153 | this.gutterBottom = this.Get('chart.gutter.bottom'); |
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| 154 | |
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| 155 | /** |
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| 156 | * Work out the graphArea |
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| 157 | */ |
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| 158 | this.graphArea = RGraph.GetWidth(this) - this.gutterLeft - this.gutterRight; |
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| 159 | this.graphHeight = RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom; |
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| 160 | this.numEvents = this.Get('chart.events').length |
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| 161 | this.barHeight = this.graphHeight / this.numEvents; |
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| 162 | this.halfBarHeight = this.barHeight / 2; |
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| 163 | |
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| 164 | /** |
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| 165 | * Draw the background |
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| 166 | */ |
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| 167 | RGraph.background.Draw(this); |
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| 168 | |
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| 169 | /** |
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| 170 | * Draw a space for the left hand labels |
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| 171 | */ |
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| 172 | //this.context.beginPath(); |
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| 173 | //this.context.lineWidth = 1; |
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| 174 | //this.context.strokeStyle = this.Get('chart.background.grid.color'); |
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| 175 | //this.context.fillStyle = 'white'; |
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| 176 | //this.context.fillRect(0,gutter - 5,gutter * 3, RGraph.GetHeight(this) - (2 * gutter) + 10); |
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| 177 | //this.context.moveTo(gutter * 3, gutter); |
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| 178 | //this.context.lineTo(gutter * 3, RGraph.GetHeight(this) - gutter); |
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| 179 | //this.context.stroke(); |
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| 180 | //this.context.fill(); |
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| 181 | |
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| 182 | /** |
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| 183 | * Draw the labels at the top |
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| 184 | */ |
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| 185 | this.DrawLabels(); |
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| 186 | |
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| 187 | /** |
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| 188 | * Draw the events |
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| 189 | */ |
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| 190 | this.DrawEvents(); |
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| 191 | |
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| 192 | |
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| 193 | /** |
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| 194 | * Setup the context menu if required |
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| 195 | */ |
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| 196 | if (this.Get('chart.contextmenu')) { |
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| 197 | RGraph.ShowContext(this); |
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| 198 | } |
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| 199 | |
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| 200 | /** |
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| 201 | * If the canvas is annotatable, do install the event handlers |
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| 202 | */ |
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| 203 | if (this.Get('chart.annotatable')) { |
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| 204 | RGraph.Annotate(this); |
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| 205 | } |
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| 206 | |
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| 207 | /** |
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| 208 | * This bit shows the mini zoom window if requested |
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| 209 | */ |
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| 210 | if (this.Get('chart.zoom.mode') == 'thumbnail' || this.Get('chart.zoom.mode') == 'area') { |
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| 211 | RGraph.ShowZoomWindow(this); |
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| 212 | } |
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| 213 | |
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| 214 | |
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| 215 | /** |
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| 216 | * This function enables resizing |
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| 217 | */ |
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| 218 | if (this.Get('chart.resizable')) { |
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| 219 | RGraph.AllowResizing(this); |
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| 220 | } |
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| 221 | |
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| 222 | |
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| 223 | /** |
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| 224 | * This function enables adjusting |
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| 225 | */ |
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| 226 | if (this.Get('chart.adjustable')) { |
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| 227 | RGraph.AllowAdjusting(this); |
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| 228 | } |
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| 229 | |
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| 230 | |
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| 231 | /** |
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| 232 | * Fire the RGraph ondraw event |
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| 233 | */ |
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| 234 | RGraph.FireCustomEvent(this, 'ondraw'); |
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| 235 | } |
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| 236 | |
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| 237 | |
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| 238 | /** |
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| 239 | * Draws the labels at the top and the left of the chart |
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| 240 | */ |
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| 241 | RGraph.Gantt.prototype.DrawLabels = function () |
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| 242 | { |
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| 243 | this.context.beginPath(); |
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| 244 | this.context.fillStyle = this.Get('chart.text.color'); |
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| 245 | |
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| 246 | /** |
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| 247 | * Draw the X labels at the top of the chart. |
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| 248 | */ |
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| 249 | var labelSpace = (this.graphArea) / this.Get('chart.labels').length; |
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| 250 | var xPos = this.gutterLeft + (labelSpace / 2); |
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| 251 | this.context.strokeStyle = 'black' |
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| 252 | |
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| 253 | for (i=0; i<this.Get('chart.labels').length; ++i) { |
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| 254 | RGraph.Text(this.context,this.Get('chart.text.font'),this.Get('chart.text.size'),xPos + (i * labelSpace),this.gutterTop - (this.Get('chart.text.size') / 2) - 5,String(this.Get('chart.labels')[i]),'center','center'); |
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| 255 | } |
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| 256 | |
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| 257 | // Draw the vertical labels |
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| 258 | for (i=0; i<this.Get('chart.events').length; ++i) { |
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| 259 | var ev = this.Get('chart.events')[i]; |
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| 260 | var x = this.gutterLeft; |
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| 261 | var y = this.gutterTop + this.halfBarHeight + (i * this.barHeight); |
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| 262 | |
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| 263 | RGraph.Text(this.context, this.Get('chart.text.font'), this.Get('chart.text.size'), x - 5, y, String(ev[3]), 'center', 'right'); |
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| 264 | } |
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| 265 | } |
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| 266 | |
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| 267 | /** |
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| 268 | * Draws the events to the canvas |
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| 269 | */ |
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| 270 | RGraph.Gantt.prototype.DrawEvents = function () |
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| 271 | { |
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| 272 | var canvas = this.canvas; |
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| 273 | var context = this.context; |
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| 274 | var events = this.Get('chart.events'); |
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| 275 | |
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| 276 | /** |
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| 277 | * Reset the coords array to prevent it growing |
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| 278 | */ |
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| 279 | this.coords = []; |
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| 280 | |
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| 281 | /** |
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| 282 | * First draw the vertical bars that have been added |
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| 283 | */ |
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| 284 | if (this.Get('chart.vbars')) { |
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| 285 | for (i=0; i<this.Get('chart.vbars').length; ++i) { |
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| 286 | // Boundary checking |
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| 287 | if (this.Get('chart.vbars')[i][0] + this.Get('chart.vbars')[i][1] > this.Get('chart.xmax')) { |
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| 288 | this.Get('chart.vbars')[i][1] = 364 - this.Get('chart.vbars')[i][0]; |
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| 289 | } |
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| 290 | |
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| 291 | var barX = this.gutterLeft + (( (this.Get('chart.vbars')[i][0] - this.Get('chart.xmin')) / (this.Get('chart.xmax') - this.Get('chart.xmin')) ) * this.graphArea); |
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| 292 | |
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| 293 | var barY = this.gutterTop; |
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| 294 | var width = (this.graphArea / (this.Get('chart.xmax') - this.Get('chart.xmin')) ) * this.Get('chart.vbars')[i][1]; |
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| 295 | var height = RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom; |
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| 296 | |
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| 297 | // Right hand bounds checking |
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| 298 | if ( (barX + width) > (RGraph.GetWidth(this) - this.gutterRight) ) { |
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| 299 | width = RGraph.GetWidth(this) - this.gutterRight - barX; |
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| 300 | } |
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| 301 | |
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| 302 | context.fillStyle = this.Get('chart.vbars')[i][2]; |
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| 303 | context.fillRect(barX, barY, width, height); |
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| 304 | } |
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| 305 | } |
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| 306 | |
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| 307 | |
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| 308 | /** |
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| 309 | * Draw the events |
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| 310 | */ |
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| 311 | for (i=0; i<events.length; ++i) { |
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| 312 | |
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| 313 | var ev = events[i]; |
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| 314 | var min = this.Get('chart.xmin'); |
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| 315 | |
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| 316 | context.beginPath(); |
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| 317 | context.strokeStyle = 'black'; |
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| 318 | context.fillStyle = ev[4] ? ev[4] : this.Get('chart.defaultcolor'); |
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| 319 | |
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| 320 | var barStartX = this.gutterLeft + (((ev[0] - min) / (this.Get('chart.xmax') - min)) * this.graphArea); |
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| 321 | //barStartX += this.margin; |
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| 322 | var barStartY = this.gutterTop + (i * this.barHeight); |
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| 323 | var barWidth = (ev[1] / (this.Get('chart.xmax') - min) ) * this.graphArea; |
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| 324 | |
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| 325 | /** |
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| 326 | * If the width is greater than the graph atrea, curtail it |
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| 327 | */ |
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| 328 | if ( (barStartX + barWidth) > (RGraph.GetWidth(this) - this.gutterRight) ) { |
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| 329 | barWidth = RGraph.GetWidth(this) - this.gutterRight - barStartX; |
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| 330 | } |
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| 331 | |
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| 332 | /** |
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| 333 | * Draw the actual bar storing store the coordinates |
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| 334 | */ |
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| 335 | this.coords.push([barStartX, barStartY + this.Get('chart.margin'), barWidth, this.barHeight - (2 * this.Get('chart.margin'))]); |
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| 336 | context.fillRect(barStartX, barStartY + this.Get('chart.margin'), barWidth, this.barHeight - (2 * this.Get('chart.margin')) ); |
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| 337 | |
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| 338 | // Work out the completeage indicator |
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| 339 | var complete = (ev[2] / 100) * barWidth; |
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| 340 | |
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| 341 | // Draw the % complete indicator. If it's greater than 0 |
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| 342 | if (typeof(ev[2]) == 'number') { |
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| 343 | context.beginPath(); |
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| 344 | context.fillStyle = ev[5] ? ev[5] : '#0c0'; |
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| 345 | context.fillRect(barStartX, |
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| 346 | barStartY + this.Get('chart.margin'), |
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| 347 | (ev[2] / 100) * barWidth, |
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| 348 | this.barHeight - (2 * this.Get('chart.margin')) ); |
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| 349 | |
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| 350 | context.beginPath(); |
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| 351 | context.fillStyle = this.Get('chart.text.color'); |
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| 352 | RGraph.Text(context, this.Get('chart.text.font'), this.Get('chart.text.size'), barStartX + barWidth + 5, barStartY + this.halfBarHeight, String(ev[2]) + '%', 'center'); |
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| 353 | } |
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| 354 | |
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| 355 | // draw the border around the bar |
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| 356 | if (this.Get('chart.borders') || events[i][6]) { |
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| 357 | context.strokeStyle = typeof(events[i][6]) == 'string' ? events[i][6] : 'black'; |
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| 358 | context.lineWidth = (typeof(events[i][7]) == 'number' ? events[i][7] : 1); |
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| 359 | context.beginPath(); |
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| 360 | context.strokeRect(barStartX, barStartY + this.Get('chart.margin'), barWidth, this.barHeight - (2 * this.Get('chart.margin')) ); |
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| 361 | } |
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| 362 | } |
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| 363 | |
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| 364 | |
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| 365 | /** |
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| 366 | * If tooltips are defined, handle them |
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| 367 | */ |
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| 368 | if (this.Get('chart.tooltips')) { |
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| 369 | |
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| 370 | // Register the object for redrawing |
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| 371 | RGraph.Register(this); |
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| 372 | |
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| 373 | /** |
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| 374 | * If the cursor is over a hotspot, change the cursor to a hand |
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| 375 | */ |
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| 376 | var canvas_onmousemove_func = function (eventObj) |
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| 377 | { |
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| 378 | eventObj = RGraph.FixEventObject(eventObj); |
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| 379 | var canvas = eventObj.target; |
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| 380 | var obj = canvas.__object__; |
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| 381 | var len = obj.coords.length; |
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| 382 | |
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| 383 | /** |
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| 384 | * Get the mouse X/Y coordinates |
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| 385 | */ |
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| 386 | var mouseCoords = RGraph.getMouseXY(eventObj); |
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| 387 | |
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| 388 | /** |
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| 389 | * Loop through the bars determining if the mouse is over a bar |
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| 390 | */ |
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| 391 | for (var i=0; i<len; i++) { |
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| 392 | |
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| 393 | var mouseX = mouseCoords[0]; // In relation to the canvas |
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| 394 | var mouseY = mouseCoords[1]; // In relation to the canvas |
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| 395 | var left = obj.coords[i][0]; |
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| 396 | var top = obj.coords[i][1]; |
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| 397 | var width = obj.coords[i][2]; |
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| 398 | var height = obj.coords[i][3]; |
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| 399 | |
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| 400 | if ( mouseX >= left |
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| 401 | && mouseX <= (left + width) |
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| 402 | && mouseY >= top |
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| 403 | && mouseY <= (top + height) |
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| 404 | && (typeof(obj.Get('chart.tooltips')) == 'function' || obj.Get('chart.tooltips')[i]) ) { |
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| 405 | |
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| 406 | canvas.style.cursor = 'pointer'; |
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| 407 | return; |
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| 408 | } |
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| 409 | } |
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| 410 | |
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| 411 | canvas.style.cursor = 'default'; |
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| 412 | } |
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| 413 | this.canvas.addEventListener('mousemove', canvas_onmousemove_func, false); |
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| 414 | RGraph.AddEventListener(this.id, 'mousemove', canvas_onmousemove_func); |
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| 415 | |
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| 416 | |
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| 417 | var canvas_onclick_func = function (eventObj) |
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| 418 | { |
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| 419 | eventObj = RGraph.FixEventObject(eventObj); |
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| 420 | |
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| 421 | var canvas = eventObj.target; |
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| 422 | var context = canvas.getContext('2d'); |
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| 423 | var obj = canvas.__object__; |
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| 424 | |
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| 425 | var mouseCoords = RGraph.getMouseXY(eventObj); |
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| 426 | var mouseX = mouseCoords[0]; |
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| 427 | var mouseY = mouseCoords[1]; |
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| 428 | |
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| 429 | |
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| 430 | for (i=0; i<obj.coords.length; ++i) { |
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| 431 | |
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| 432 | var idx = i; |
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| 433 | var xCoord = obj.coords[i][0]; |
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| 434 | var yCoord = obj.coords[i][1]; |
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| 435 | var width = obj.coords[i][2]; |
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| 436 | var height = obj.coords[i][3]; |
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| 437 | |
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| 438 | if ( |
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| 439 | mouseX >= xCoord |
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| 440 | && (mouseX <= xCoord + width) |
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| 441 | && mouseY >= yCoord |
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| 442 | && (mouseY <= yCoord + height) |
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| 443 | && obj.Get('chart.tooltips') |
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| 444 | ) { |
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| 445 | |
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| 446 | // Redraw the graph |
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| 447 | RGraph.Redraw(); |
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| 448 | |
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| 449 | /** |
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| 450 | * Get the tooltip text |
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| 451 | */ |
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| 452 | if (typeof(obj.Get('chart.tooltips')) == 'function') { |
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| 453 | var text = obj.Get('chart.tooltips')(idx); |
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| 454 | |
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| 455 | } else if (typeof(obj.Get('chart.tooltips')) == 'object' && typeof(obj.Get('chart.tooltips')[idx]) == 'function') { |
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| 456 | var text = obj.Get('chart.tooltips')[idx](idx); |
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| 457 | |
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| 458 | } else if (typeof(obj.Get('chart.tooltips')) == 'object') { |
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| 459 | var text = obj.Get('chart.tooltips')[idx]; |
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| 460 | |
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| 461 | } else { |
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| 462 | var text = null; |
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| 463 | } |
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| 464 | |
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| 465 | if (String(text).length && text != null) { |
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| 466 | |
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| 467 | // SHOW THE CORRECT TOOLTIP |
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| 468 | RGraph.Tooltip(canvas, text, eventObj.pageX, eventObj.pageY, idx); |
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| 469 | |
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| 470 | /** |
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| 471 | * Draw a rectangle around the correct bar, in effect highlighting it |
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| 472 | */ |
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| 473 | context.strokeStyle = obj.Get('chart.highlight.stroke'); |
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| 474 | context.fillStyle = obj.Get('chart.highlight.fill'); |
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| 475 | context.strokeRect(xCoord, yCoord, width, height); |
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| 476 | context.fillRect(xCoord, yCoord, width, height); |
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| 477 | |
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| 478 | eventObj.stopPropagation(); |
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| 479 | } |
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| 480 | return; |
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| 481 | } |
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| 482 | } |
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| 483 | } |
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| 484 | this.canvas.addEventListener('click', canvas_onclick_func, false); |
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| 485 | RGraph.AddEventListener(this.id, 'click', canvas_onclick_func); |
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| 486 | } |
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| 487 | } |
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