tests/crosshair.html

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