tests/annotation.html

   1 <!DOCTYPE html>
   2 <html>
   3   <head>
   4     <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7; IE=EmulateIE9">
   5     <title>demo</title>
   6     <!--[if IE]>
   7     <script type="text/javascript" src="../excanvas.js"></script>
   8     <![endif]-->
   9     <!--
  10     <script type="text/javascript" src="dygraph-combined.js"></script>
  11     -->
  12     <script type="text/javascript" src="../strftime/strftime-min.js"></script>
  13     <script type="text/javascript" src="../rgbcolor/rgbcolor.js"></script>
  14     <script type="text/javascript" src="../dygraph-canvas.js"></script>
  15     <script type="text/javascript" src="../dygraph.js"></script>
  16     <style type="text/css">
  17     .annotation {
  18     }
  19     </style>
  20   </head>
  21   <body>
  22     <h3>Annotations Demo</h3>
  23     <p>Click any point to add an annotation to it or click "Add Annotation".</p>
  24     <input type="button" value="Add Annotation" onclick="add()" />
  25     <input type="button" value="Shove to bottom" onclick="bottom(this)" />
  26     <div id="events"> </div>
  27     <div style="position:absolute; left:200px; top: 200px;" id="g_div"></div>
  28     <div style="position:absolute; left:700px; top: 200px;" id="list"></div>
  29
  30     <script type="text/javascript">
  31       var eventDiv = document.getElementById("events");
  32       function nameAnnotation(ann) {
  33         return "(" + ann.series + ", " + ann.x + ")";
  34       }
  35
  36       g = new Dygraph(
  37               document.getElementById("g_div"),
  38               function() {
  39                 var zp = function(x) { if (x < 10) return "0"+x; else return x; };
  40                 var r = "date,parabola,line,another line,sine wave\n";
  41                 for (var i=1; i<=31; i++) {
  42                   r += "200610" + zp(i);
  43                   r += "," + 10*(i*(31-i));
  44                   r += "," + 10*(8*i);
  45                   r += "," + 10*(250 - 8*i);
  46                   r += "," + 10*(125 + 125 * Math.sin(0.3*i));
  47                   r += "\n";
  48                 }
  49                 return r;
  50               },
  51               {
  52                 rollPeriod: 1,
  53                 showRoller: true,
  54                 width: 480,
  55                 height: 320,
  56                 drawCallback: function(g) {
  57                   var ann = g.annotations();
  58                   var html = "";
  59                   for (var i = 0; i < ann.length; i++) {
  60                     var name = nameAnnotation(ann[i]);
  61                     html += "<span id='" + name + "'>"
  62                     html += name + ": " + (ann[i].shortText || '(icon)')
  63                     html += " -> " + ann[i].text + "</span><br/>";
  64                   }
  65                   document.getElementById("list").innerHTML = html;
  66                 }
  67               }
  68           );
  69
  70       var last_ann = 0;
  71       annotations = [];
  72       for (var x = 10; x < 15; x += 2) {
  73         annotations.push( {
  74           series: 'sine wave',
  75           x: "200610" + x,
  76           shortText: x,
  77           text: 'Stock Market Crash ' + x
  78         } );
  79         last_ann = x;
  80       }
  81       annotations.push( {
  82         series: 'another line',
  83         x: "20061013",
  84         icon: 'dollar.png',
  85         width: 18,
  86         height: 23,
  87         tickHeight: 4,
  88         text: 'Another one',
  89         cssClass: 'annotation',
  90         clickHandler: function() {
  91           document.getElementById("events").innerHTML += "special handler<br/>";
  92         }
  93       } );
  94       g.setAnnotations(annotations);
  95
  96       function add() {
  97         var x = last_ann + 2;
  98         var annnotations = g.annotations();
  99         annotations.push( {
 100           series: 'line',
 101           x: "200610" + x,
 102           shortText: x,
 103           text: 'Line ' + x,
 104           tickHeight: 10
 105         } );
 106         last_ann = x;
 107         g.setAnnotations(annotations);
 108       }
 109
 110       function bottom(el) {
 111         var to_bottom = true;
 112         if (el.value != 'Shove to bottom') to_bottom = false;
 113
 114         var anns = g.annotations();
 115         for (var i = 0; i < anns.length; i++) {
 116           anns[i].attachAtBottom = to_bottom;
 117         }
 118         g.setAnnotations(anns);
 119
 120         if (to_bottom) {
 121           el.value = 'Lift back up';
 122         } else {
 123           el.value = 'Shove to bottom';
 124         }
 125       }
 126
 127       var saveBg = '';
 128       var num = 0;
 129       g.updateOptions( {
 130         annotationClickHandler: function(ann, point, dg, event) {
 131           eventDiv.innerHTML += "click: " + nameAnnotation(ann) + "<br/>";
 132         },
 133         annotationDblClickHandler: function(ann, point, dg, event) {
 134           eventDiv.innerHTML += "dblclick: " + nameAnnotation(ann) + "<br/>";
 135         },
 136         annotationMouseOverHandler: function(ann, point, dg, event) {
 137           document.getElementById(nameAnnotation(ann)).style.fontWeight = 'bold';
 138           saveBg = ann.div.style.backgroundColor;
 139           ann.div.style.backgroundColor = '#ddd';
 140         },
 141         annotationMouseOutHandler: function(ann, point, dg, event) {
 142           document.getElementById(nameAnnotation(ann)).style.fontWeight = 'normal';
 143           ann.div.style.backgroundColor = saveBg;
 144         },
 145
 146         pointClickCallback: function(event, p) {
 147           // Check if the point is already annotated.
 148           if (p.annotation) return;
 149
 150           // If not, add one.
 151           var ann = {
 152             series: p.name,
 153             xval: p.xval,
 154             shortText: num,
 155             text: "Annotation #" + num
 156           };
 157           var anns = g.annotations();
 158           anns.push(ann);
 159           g.setAnnotations(anns);
 160
 161           num++;
 162         }
 163       });
 164     </script>
 165 </body>
 166 </html>