tests/annotation.html

   1 <!DOCTYPE html>
   2 <html>
   3   <head>
   4     <title>demo</title>
   5     <!--
   6     <script type="text/javascript" src="dygraph-combined.js"></script>
   7     -->
   8     <!--
   9     For production (minified) code, use:
  10     <script type="text/javascript" src="dygraph-combined.js"></script>
  11     -->
  12     <script type="text/javascript" src="../dygraph-dev.js"></script>
  13
  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       annotations = [];
  35       var graph_initialized = false;
  36
  37       g = new Dygraph(
  38               document.getElementById("g_div"),
  39               function() {
  40                 var zp = function(x) { if (x < 10) return "0"+x; else return x; };
  41                 var r = "date,parabola,line,another line,sine wave\n";
  42                 for (var i=1; i<=31; i++) {
  43                   r += "200610" + zp(i);
  44                   r += "," + 10*(i*(31-i));
  45                   r += "," + 10*(8*i);
  46                   r += "," + 10*(250 - 8*i);
  47                   r += "," + 10*(125 + 125 * Math.sin(0.3*i));
  48                   r += "\n";
  49                 }
  50                 return r;
  51               },
  52               {
  53                 rollPeriod: 1,
  54                 showRoller: true,
  55                 width: 480,
  56                 height: 320,
  57                 drawCallback: function(g, is_initial) {
  58                   if (is_initial) {
  59                     graph_initialized = true;
  60                     if (annotations.length > 0) {
  61                       g.setAnnotations(annotations);
  62                     }
  63                   }
  64
  65                   var ann = g.annotations();
  66                   var html = "";
  67                   for (var i = 0; i < ann.length; i++) {
  68                     var name = nameAnnotation(ann[i]);
  69                     html += "<span id='" + name + "'>"
  70                     html += name + ": " + (ann[i].shortText || '(icon)')
  71                     html += " -> " + ann[i].text + "</span><br/>";
  72                   }
  73                   document.getElementById("list").innerHTML = html;
  74                 }
  75               }
  76           );
  77
  78       var last_ann = 0;
  79       for (var x = 10; x < 15; x += 2) {
  80         annotations.push( {
  81           series: 'sine wave',
  82           x: "200610" + x,
  83           shortText: x,
  84           text: 'Stock Market Crash ' + x
  85         } );
  86         last_ann = x;
  87       }
  88       annotations.push( {
  89         series: 'another line',
  90         x: "20061013",
  91         icon: 'dollar.png',
  92         width: 18,
  93         height: 23,
  94         tickHeight: 4,
  95         text: 'Another one',
  96         cssClass: 'annotation',
  97         clickHandler: function() {
  98           document.getElementById("events").innerHTML += "special handler<br/>";
  99         }
 100       } );
 101       annotations.push( {
 102         series: 'parabola',
 103         x: '20061012',
 104         shortText: 'P',
 105         text: 'Parabola Annotation at same x-coord'
 106       } );
 107
 108       if (graph_initialized) {
 109         g.setAnnotations(annotations);
 110       }
 111
 112       function add() {
 113         var x = last_ann + 2;
 114         var annnotations = g.annotations();
 115         annotations.push( {
 116           series: 'line',
 117           x: "200610" + x,
 118           shortText: x,
 119           text: 'Line ' + x,
 120           tickHeight: 10
 121         } );
 122         last_ann = x;
 123         g.setAnnotations(annotations);
 124       }
 125
 126       function bottom(el) {
 127         var to_bottom = true;
 128         if (el.value != 'Shove to bottom') to_bottom = false;
 129
 130         var anns = g.annotations();
 131         for (var i = 0; i < anns.length; i++) {
 132           anns[i].attachAtBottom = to_bottom;
 133         }
 134         g.setAnnotations(anns);
 135
 136         if (to_bottom) {
 137           el.value = 'Lift back up';
 138         } else {
 139           el.value = 'Shove to bottom';
 140         }
 141       }
 142
 143       var saveBg = '';
 144       var num = 0;
 145       g.updateOptions( {
 146         annotationClickHandler: function(ann, point, dg, event) {
 147           eventDiv.innerHTML += "click: " + nameAnnotation(ann) + "<br/>";
 148         },
 149         annotationDblClickHandler: function(ann, point, dg, event) {
 150           eventDiv.innerHTML += "dblclick: " + nameAnnotation(ann) + "<br/>";
 151         },
 152         annotationMouseOverHandler: function(ann, point, dg, event) {
 153           document.getElementById(nameAnnotation(ann)).style.fontWeight = 'bold';
 154           saveBg = ann.div.style.backgroundColor;
 155           ann.div.style.backgroundColor = '#ddd';
 156         },
 157         annotationMouseOutHandler: function(ann, point, dg, event) {
 158           document.getElementById(nameAnnotation(ann)).style.fontWeight = 'normal';
 159           ann.div.style.backgroundColor = saveBg;
 160         },
 161
 162         pointClickCallback: function(event, p) {
 163           // Check if the point is already annotated.
 164           if (p.annotation) return;
 165
 166           // If not, add one.
 167           var ann = {
 168             series: p.name,
 169             xval: p.xval,
 170             shortText: num,
 171             text: "Annotation #" + num
 172           };
 173           var anns = g.annotations();
 174           anns.push(ann);
 175           g.setAnnotations(anns);
 176
 177           num++;
 178         }
 179       });
 180     </script>
 181 </body>
 182 </html>