tests/crosshair.html

   1 <html>
   2   <head>
   3     <title>crosshairs</title>
   4     <!--[if IE]>
   5     <script type="text/javascript" src="excanvas.js"></script>
   6     <![endif]-->
   7     <script type="text/javascript" src="../dygraph-combined.js"></script>
   8     <script type="text/javascript" src="../dygraph-canvas.js"></script>
   9     <script type="text/javascript" src="../dygraph.js"></script>
  10     <script type="text/javascript" src="data.js"></script>
  11   </head>
  12   <body>
  13     <p>Hover, click and zoom to test the callbacks:</p>
  14     <div id="div_g" style="width:600px; height:300px; position:relative;">
  15     </div>
  16
  17     <script type="text/javascript">
  18       var lines = [];
  19       var xline;
  20       g = new Dygraph(
  21             document.getElementById("div_g"),
  22             NoisyData, {
  23               rollPeriod: 7,
  24               showRoller: true,
  25               errorBars: true,
  26
  27               highlightCallback: function(e, x, pts) {
  28                 for (var i = 0; i < pts.length; i++) {
  29                   var y = pts[i].canvasy;
  30                   lines[i].style.top = y + "px";
  31                   if (i == 0) xline.style.left = pts[i].canvasx + "px";
  32                 }
  33
  34               }
  35             }
  36           );
  37
  38       for (var i = 0; i < 2; i++) {
  39         var line = document.createElement("div");
  40         line.style.width = "100%";
  41         line.style.height = "1px";
  42         line.style.backgroundColor = "black";
  43         line.style.position = "absolute";
  44         document.getElementById("div_g").appendChild(line);
  45         lines.push(line);
  46       }
  47
  48       xline = document.createElement("div");
  49       xline.style.width = "1px";
  50       xline.style.height = "100%";
  51       xline.style.top = "0px";
  52       xline.style.backgroundColor = "black";
  53       xline.style.position = "absolute";
  54       document.getElementById("div_g").appendChild(xline);
  55     </script>
  56   </body>
  57 </html>