tests/annotation.html

   1 <!DOCTYPE html>
   2 <html>
   3   <head>
   4     <link rel="stylesheet" href="../dist/dygraph.css">
   5     <title>demo</title>
   6     <script type="text/javascript" src="../dist/dygraph.js"></script>
   7
   8     <style type="text/css">
   9     .annotation {
  10     }
  11     </style>
  12   </head>
  13   <body>
  14     <h3>Annotations Demo</h3>
  15     <p>Click any point to add an annotation to it or click "Add Annotation".</p>
  16     <input type="button" value="Add Annotation" onclick="add()" />
  17     <input type="button" value="Shove to bottom" onclick="bottom(this)" />
  18     <div id="events"> </div>
  19     <div style="position:absolute; left:200px; top: 200px;" id="g_div"></div>
  20     <div style="position:absolute; left:700px; top: 200px;" id="list"></div>
  21
  22     <script type="text/javascript">
  23       var eventDiv = document.getElementById("events");
  24       function nameAnnotation(ann) {
  25         return "(" + ann.series + ", " + ann.x + ")";
  26       }
  27
  28       annotations = [];
  29       var graph_initialized = false;
  30
  31       g = new Dygraph(
  32               document.getElementById("g_div"),
  33               function() {
  34                 var zp = function(x) { if (x < 10) return "0"+x; else return x; };
  35                 var r = "date,parabola,line,another line,sine wave\n";
  36                 for (var i=1; i<=31; i++) {
  37                   r += "200610" + zp(i);
  38                   r += "," + 10*(i*(31-i));
  39                   r += "," + 10*(8*i);
  40                   r += "," + 10*(250 - 8*i);
  41                   r += "," + 10*(125 + 125 * Math.sin(0.3*i));
  42                   r += "\n";
  43                 }
  44                 return r;
  45               },
  46               {
  47                 rollPeriod: 1,
  48                 showRoller: true,
  49                 width: 480,
  50                 height: 320,
  51                 drawCallback: function(g, is_initial) {
  52                   if (is_initial) {
  53                     graph_initialized = true;
  54                     if (annotations.length > 0) {
  55                       g.setAnnotations(annotations);
  56                     }
  57                   }
  58
  59                   var ann = g.annotations();
  60                   var html = "";
  61                   for (var i = 0; i < ann.length; i++) {
  62                     var name = nameAnnotation(ann[i]);
  63                     html += "<span id='" + name + "'>"
  64                     html += name + ": " + (ann[i].shortText || '(icon)')
  65                     html += " -> " + ann[i].text + "</span><br/>";
  66                   }
  67                   document.getElementById("list").innerHTML = html;
  68                 }
  69               }
  70           );
  71
  72       var last_ann = 0;
  73       for (var x = 10; x < 15; x += 2) {
  74         annotations.push( {
  75           series: 'sine wave',
  76           x: "200610" + x,
  77           shortText: x,
  78           text: 'Stock Market Crash ' + x
  79         } );
  80         last_ann = x;
  81       }
  82       annotations.push( {
  83         series: 'another line',
  84         x: "20061013",
  85         icon: 'dollar.png',
  86         width: 18,
  87         height: 23,
  88         tickHeight: 4,
  89         tickColor: 'indianred',
  90         tickWidth: 2,
  91         text: 'Another one',
  92         cssClass: 'annotation',
  93         clickHandler: function() {
  94           document.getElementById("events").innerHTML += "special handler<br/>";
  95         }
  96       } );
  97       annotations.push( {
  98         series: 'parabola',
  99         x: '20061012',
 100         shortText: 'P',
 101         text: 'Parabola Annotation at same x-coord'
 102       } );
 103
 104       if (graph_initialized) {
 105         g.setAnnotations(annotations);
 106       }
 107
 108       function add() {
 109         var x = last_ann + 2;
 110         var annnotations = g.annotations();
 111         annotations.push( {
 112           series: 'line',
 113           x: "200610" + x,
 114           shortText: x,
 115           text: 'Line ' + x,
 116           tickHeight: 10
 117         } );
 118         last_ann = x;
 119         g.setAnnotations(annotations);
 120       }
 121
 122       function bottom(el) {
 123         var to_bottom = true;
 124         if (el.value != 'Shove to bottom') to_bottom = false;
 125
 126         var anns = g.annotations();
 127         for (var i = 0; i < anns.length; i++) {
 128           anns[i].attachAtBottom = to_bottom;
 129         }
 130         g.setAnnotations(anns);
 131
 132         if (to_bottom) {
 133           el.value = 'Lift back up';
 134         } else {
 135           el.value = 'Shove to bottom';
 136         }
 137       }
 138
 139       var saveBg = '';
 140       var num = 0;
 141       g.updateOptions( {
 142         annotationClickHandler: function(ann, point, dg, event) {
 143           eventDiv.innerHTML += "click: " + nameAnnotation(ann) + "<br/>";
 144         },
 145         annotationDblClickHandler: function(ann, point, dg, event) {
 146           eventDiv.innerHTML += "dblclick: " + nameAnnotation(ann) + "<br/>";
 147         },
 148         annotationMouseOverHandler: function(ann, point, dg, event) {
 149           document.getElementById(nameAnnotation(ann)).style.fontWeight = 'bold';
 150           saveBg = ann.div.style.backgroundColor;
 151           ann.div.style.backgroundColor = '#ddd';
 152         },
 153         annotationMouseOutHandler: function(ann, point, dg, event) {
 154           document.getElementById(nameAnnotation(ann)).style.fontWeight = 'normal';
 155           ann.div.style.backgroundColor = saveBg;
 156         },
 157
 158         pointClickCallback: function(event, p) {
 159           // Check if the point is already annotated.
 160           if (p.annotation) return;
 161
 162           // If not, add one.
 163           var ann = {
 164             series: p.name,
 165             xval: p.xval,
 166             shortText: num,
 167             text: "Annotation #" + num
 168           };
 169           var anns = g.annotations();
 170           anns.push(ann);
 171           g.setAnnotations(anns);
 172
 173           num++;
 174         }
 175       });
 176     </script>
 177 </body>
 178 </html>