RGraph/docs/resizing.html

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  21     <title>RGraph: HTML5 canvas graph library - Resizing your graphs</title>
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  26     <script src="../libraries/RGraph.common.context.js" ></script>
  27     <script src="../libraries/RGraph.common.resizing.js" ></script>
  28     <script src="../libraries/RGraph.common.tooltips.js" ></script>
  29     <script src="../libraries/RGraph.line.js" ></script>
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  32     <script>
  33         window.onload = function ()
  34         {
  35             /**
  36             * Draw the line chart
  37             */
  38             var line = new RGraph.Line('myLine', [4,6,3,7,8,4,9,5,6,4,8,5] );
  39             line.Set('chart.labels', ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']);
  40             line.Set('chart.hmargin', 5);
  41             line.Set('chart.title', 'A resizable line chart (tooltips)');
  42             line.Set('chart.colors', ['red']);
  43             line.Set('chart.resizable', true);
  44             line.Set('chart.hmargin', 5);
  45             line.Set('chart.shadow', true);
  46             line.Set('chart.shadow.blur', 5);
  47             line.Set('chart.shadow.offsetx', 1);
  48             line.Set('chart.shadow.offsety', 1);
  49             line.Set('chart.contextmenu', [['Sample!', function () {alert('A sample item');}]]);
  50             line.Set('chart.background.grid.autofit', true);
  51             line.Set('chart.background.grid.autofit.numhlines', 10);
  52             line.Set('chart.linewidth', 3);
  53             //line.Set('chart.tooltips', ['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec']);
  54             line.Draw();
  55         }
  56     </script>
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 155
 156     <div id="breadcrumb">
 157         <a href="../index.html">RGraph: HTML5 canvas graph library</a>
 158         >
 159         <a href="index.html">Documentation</a>
 160         >
 161         Resizing your graphs
 162     </div>
 163
 164     <h1>RGraph: HTML5 canvas graph library - Resizing your graphs</h1>
 165
 166     <script>
 167         if (RGraph.isIE8()) {
 168             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>');
 169         }
 170     </script>
 171
 172     <canvas id="myLine" width="400" height="200" style="float: left">[No canvas support]</canvas>
 173
 174     <p>&nbsp;</p>
 175
 176     <p>
 177         RGraph has the facility to allow you to resize your graphs. This is new as of 10th April 2010. Because of the
 178         numerous events it has to install code on, it is unlikely to work with other dynamic features. The context
 179         menu does though, and now that tooltips use DOM2 events, so do they. It can be useful if you are,
 180         for example, doing a presentation and need to enlarge the graph.
 181     </p>
 182
 183     <p>
 184         All you need to do to enable it is set <i>chart.resizable</i> to true. There are certain caveats that you should be aware of though:
 185     </p>
 186
 187     <br clear="all" />
 188
 189     <ul>
 190         <li>
 191             Graphs can only be enlarged down and to the right, so you will get better results if your graph is not placed at the
 192             right of the page.
 193         </li>
 194
 195         <li>
 196             The minimum you can resize your graphs to is 50% of the original graph width/height.
 197         </li>
 198
 199         <li>
 200             <b>Note:</b> Resizing can change the layout of your page (reflows). As such you will need to be careful when laying out your
 201             page, and you may need to experiment with things like CSS float:, width, height etc so that the effect is either not apparent
 202             or is minimal.
 203         </li>
 204
 205         <li>
 206             If your canvas is nested within a table, resizing can result in very minor (1-2px for example) positioning changes. These
 207             can be mitigated by turning off table borders, setting the cellspacing to 0 and also setting the cellpadding to 0.
 208         </li>
 209     </ul>
 210
 211 </body>
 212 </html>