RGraph/examples/donut.html

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  21     <title>RGraph: HTML5 canvas graph library - donut chart</title>
  22
  23     <meta name="keywords" content="rgraph html5 canvas example donut chart" />
  24     <meta name="description" content="RGraph: Donut chart examples" />
  25
  26     <link rel="stylesheet" href="../css/website.css" type="text/css" media="screen" />
  27     <link rel="icon" type="image/png" href="../images/favicon.png">
  28
  29     <script src="../libraries/RGraph.common.core.js" ></script>
  30     <script src="../libraries/RGraph.common.context.js" ></script>
  31     <script src="../libraries/RGraph.common.annotate.js" ></script>
  32     <script src="../libraries/RGraph.common.tooltips.js" ></script>
  33     <script src="../libraries/RGraph.common.zoom.js" ></script>
  34     <script src="../libraries/RGraph.pie.js" ></script>
  35     <!--[if IE 8]><script src="../excanvas/excanvas.compressed.js"></script><![endif]-->
  36
  37     <script>
  38         window.onload = function ()
  39         {
  40             var donut = new RGraph.Pie('donut1', [41,37,16,3,3], [20,5,60,7,3], [17,3,68,6,3]);
  41             donut.Set('chart.variant', 'donut');
  42             donut.Set('chart.linewidth', 5);
  43             donut.Set('chart.strokestyle', 'white');
  44             donut.Set('chart.gutter', 45);
  45             donut.Set('chart.title', "Browser share (zoom)");
  46
  47             donut.Set('chart.key', ['MSIE 7', 'MSIE 6', 'Firefox', 'Safari', 'Other']);
  48             donut.Set('chart.key.shadow', true);
  49             donut.Set('chart.key.shadow.offsetx', 3);
  50             donut.Set('chart.key.shadow.offsety', 3);
  51             donut.Set('chart.key.shadow.blur', 3);
  52             donut.Set('chart.key.shadow.color', 'gray');
  53             donut.Set('chart.key.position', 'graph');
  54             donut.Set('chart.align', 'left');
  55
  56             if (!RGraph.isIE8()) {
  57                 donut.Set('chart.zoom.mode', 'area');
  58             }
  59
  60             donut.Draw();
  61
  62
  63             function getGradient(obj, color)
  64             {
  65                 var gradient = obj.context.createRadialGradient(obj.canvas.width / 2, obj.canvas.height / 2, 0, obj.canvas.width / 2, obj.canvas.height / 2, 200);
  66                 gradient.addColorStop(0, 'black');
  67                 gradient.addColorStop(0.5, color);
  68                 gradient.addColorStop(1, 'black');
  69
  70                 return RGraph.isIE8() ? color : gradient;
  71             }
  72
  73             var donut2 = new RGraph.Pie('donut2', [8,6,5,3,8,9,9,4]);
  74
  75             // Create the gradients
  76             var gradient = getGradient(donut2, 'red');
  77             var gradient2 = getGradient(donut2, 'green');
  78             var gradient3 = getGradient(donut2, 'pink');
  79             var gradient4 = getGradient(donut2, 'yellow');
  80             var gradient5 = getGradient(donut2, 'grey');
  81             var gradient6 = getGradient(donut2, 'cyan');
  82             var gradient7 = getGradient(donut2, 'red');
  83             var gradient8 = getGradient(donut2, '#ddd');
  84             var gradient9 = getGradient(donut2, 'blue');
  85
  86             donut2.Set('chart.variant', 'donut');
  87             donut2.Set('chart.labels', ['Flipper', 'Harry', 'Ben', 'Richard', 'Keith', 'Ben', 'George', 'Barry']);
  88             donut2.Set('chart.title', "Sales figures for week 43");
  89             donut2.Set('chart.gutter', 35);
  90             donut2.Set('chart.strokestyle', 'rgba(0,0,0,0)');
  91             donut2.Set('chart.colors', [gradient, gradient2, gradient3, gradient4, gradient5, gradient6, gradient7, gradient8, gradient9]);
  92             donut2.Draw();
  93
  94             var donut3 = new RGraph.Pie('donut3', [41,37,16,3,3]);
  95             donut3.Set('chart.labels', ['MISE 7', 'MSIE 6', 'Firefox', 'Safari', 'Other']);
  96             donut3.Set('chart.strokestyle', 'white');
  97             donut3.Set('chart.linewidth', 5);
  98             donut3.Set('chart.title', "Browser market share (tooltips)");
  99             donut3.Set('chart.tooltips', ['MISE 7', 'MSIE 6', 'Firefox', 'Safari', 'Other']);
 100             donut3.Set('chart.variant', 'donut');
 101             donut3.Draw();
 102
 103             var donut4 = new RGraph.Pie('donut4', [5,4,3,5,2,1], [3,1,1,2,1,1]);
 104             donut4.Set('chart.variant','donut');
 105             donut4.Set('chart.linewidth', 5);
 106             donut4.Set('chart.strokestyle', 'white');
 107             donut4.Set('chart.linewidth', 5);
 108             donut4.Set('chart.labels', ['Bob', 'Charles', 'Fred', 'Julian', 'Mark', 'Gary']);
 109             donut4.Draw();
 110         }
 111     </script>
 112 </head>
 113 <body>
 114
 115     <!-- Social networking buttons -->
 116
 117     <script>
 118         function HideTwitterDIV ()
 119         {
 120             document.getElementById("twitter_div").style.opacity = 0;
 121             document.getElementById("twitter_div").style.display = 'none';
 122         }
 123
 124
 125         function ShowTwitterDIV (e)
 126         {
 127             var e   = RGraph.FixEventObject(document.all ? event : e);
 128             var div = document.getElementById("twitter_div");
 129             var img = document.getElementById("twitter_icon");
 130
 131             div.style.display = 'block';
 132             div.style.left    = (RGraph.getCanvasXY(img)[0] + img.offsetWidth - div.offsetWidth + 110) + 'px';
 133             div.style.top     = (RGraph.getCanvasXY(img)[1] - 1) + 'px';
 134
 135             /**
 136             * Fade it in
 137             */
 138             setTimeout('document.getElementById("twitter_div").style.opacity = 0.2;', 25);
 139             setTimeout('document.getElementById("twitter_div").style.opacity = 0.4;', 50);
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 141             setTimeout('document.getElementById("twitter_div").style.opacity = 0.8;', 125);
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 143
 144             e.stopPropagation();
 145
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 147         }
 148
 149         /**
 150         * This code installs the event handler that hides the Twitter DIV
 151         */
 152         if (RGraph.isIE8()) {
 153              window.attachEvent('onload', function () {document.body.attachEvent('onclick', HideTwitterDIV);});
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 162         <a href="http://twitter.com/_rgraph" style="text-decoration: none" rel="nofollow" target="_blank">Follow for HTML5 news</a>
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 166         <script>
 167             // Opera fix
 168             if (navigator.userAgent.indexOf('Opera') == -1) {
 169               document.getElementById("social_icons").style.position = 'fixed';
 170               document.getElementById("twitter_div").style.position = 'fixed';
 171
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 174
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 205 -->
 206             </div>
 207     </div>
 208     <!-- /Social networking buttons -->
 209
 210 <div id="breadcrumb">
 211     <a href="../index.html">RGraph: HTML5 canvas graph library</a>
 212     >
 213     <a href="./index.html">Examples</a>
 214     >
 215     Donut chart
 216 </div>
 217
 218 <h1>RGraph: HTML5 canvas graph library - Donut chart</h1>
 219
 220     <script>
 221         if (RGraph.isIE8()) {
 222             document.write('<div style="background-color: #fee; border: 2px dashed red; padding: 5px"><b>Important</b><br /><br /> Internet Explorer 8 does not natively support the HTML5 canvas tag, so if you want to see the graphs, you can either:<ul><li>Install <a href="http://code.google.com/chrome/chromeframe/">Google Chrome Frame</a></li><li>Use ExCanvas. This is provided in the RGraph Archive.</li><li>Use another browser entirely. Your choices are Firefox 3.5+, Chrome 2+, Safari 4+ or Opera 10.5+. </li></ul> <b>Note:</b> Internet Explorer 9 fully supports the canvas tag. Click <a href="http://groups.google.com/group/rgraph/browse_thread/thread/c5651ff8c56b8f3c#" target="_blank">here</a> to see some screenshots.</div>');
 223         }
 224     </script>
 225
 226     <div>
 227
 228         <p>
 229             Formerly the Donut chart was a separate class, though now it's a variant of the Pie chart. This means smaller downloads and
 230             a much simpler implementation. Essentially it's a Pie chart with a big hole in the middle. If you want to compare multiple
 231             datasets you will probably be better off with something like a stacked or grouped bar chart, as you will be able to make
 232             comparisons easier.
 233         </p>
 234
 235         <div>
 236             <ul>
 237                 <li><a href="../docs/pie.html">Pie chart API documentation</a></li>
 238             </ul>
 239         </div>
 240
 241         <div style="width: 950px">
 242             <div style="width: 450px; float: left">
 243                 <canvas id="donut1" width="450" height="350">[No canvas support]</canvas>
 244                 <canvas id="donut2" width="450" height="350">[No canvas support]</canvas>
 245             </div>
 246
 247             <div style="width: 450px; float: right">
 248                 <canvas id="donut3" width="450" height="350">[No canvas support]</canvas>
 249                 <canvas id="donut4" width="450" height="350">[No canvas support]</canvas>
 250             </div>
 251         </div>
 252     </div>
 253
 254
 255 </body>
 256 </html>