tests/annotation.html

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