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