tests/annotation.html

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