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