tests/crosshair.html

   1 <!DOCTYPE html>
   2 <html>
   3   <head>
   4     <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7; IE=EmulateIE9">
   5     <title>crosshairs</title>
   6     <!--[if IE]>
   7     <script type="text/javascript" src="../excanvas.js"></script>
   8     <![endif]-->
   9     <!--
  10     For production (minified) code, use:
  11     <script type="text/javascript" src="dygraph-combined.js"></script>
  12     -->
  13     <script type="text/javascript" src="../dygraph-dev.js"></script>
  14
  15     <script type="text/javascript" src="data.js"></script>
  16   </head>
  17   <body>
  18     <p>Hover, click and zoom to test the callbacks:</p>
  19     <div id="div_g" style="width:600px; height:300px; position:relative;">
  20     </div>
  21
  22     <script type="text/javascript">
  23       var lines = [];
  24       var xline;
  25       g = new Dygraph(
  26             document.getElementById("div_g"),
  27             NoisyData, {
  28               rollPeriod: 7,
  29               showRoller: true,
  30               errorBars: true,
  31
  32               highlightCallback: function(e, x, pts) {
  33                 for (var i = 0; i < pts.length; i++) {
  34                   var y = pts[i].canvasy;
  35                   lines[i].style.display = "";
  36                   lines[i].style.top = y + "px";
  37                   if (i == 0) xline.style.left = pts[i].canvasx + "px";
  38                 }
  39                 xline.style.display = "";
  40               },
  41
  42               unhighlightCallback: function(e) {
  43                 for (var i = 0; i < 2; i++) {
  44                   lines[i].style.display = "none";
  45                 }
  46                 xline.style.display = "none";
  47               }
  48             }
  49           );
  50
  51       for (var i = 0; i < 2; i++) {
  52         var line = document.createElement("div");
  53         line.style.display = "none";
  54         line.style.width = "100%";
  55         line.style.height = "1px";
  56         line.style.backgroundColor = "black";
  57         line.style.position = "absolute";
  58         document.getElementById("div_g").appendChild(line);
  59         lines.push(line);
  60       }
  61
  62       xline = document.createElement("div");
  63       xline.style.display = "none";
  64       xline.style.width = "1px";
  65       xline.style.height = "100%";
  66       xline.style.top = "0px";
  67       xline.style.backgroundColor = "black";
  68       xline.style.position = "absolute";
  69       document.getElementById("div_g").appendChild(xline);
  70     </script>
  71   </body>
  72 </html>