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     <!--
  13     For production (minified) code, use:
  14     <script type="text/javascript" src="dygraph-combined.js"></script>
  15     -->
  16     <script type="text/javascript" src="../dygraph-dev.js"></script>
  17
  18     <style type="text/css">
  19     .annotation {
  20     }
  21     </style>
  22   </head>
  23   <body>
  24     <h3>Annotations Demo</h3>
  25     <p>Click any point to add an annotation to it or click "Add Annotation".</p>
  26     <input type="button" value="Add Annotation" onclick="add()" />
  27     <input type="button" value="Shove to bottom" onclick="bottom(this)" />
  28     <div id="events"> </div>
  29     <div style="position:absolute; left:200px; top: 200px;" id="g_div"></div>
  30     <div style="position:absolute; left:700px; top: 200px;" id="list"></div>
  31
  32     <script type="text/javascript">
  33       var eventDiv = document.getElementById("events");
  34       function nameAnnotation(ann) {
  35         return "(" + ann.series + ", " + ann.x + ")";
  36       }
  37
  38       annotations = [];
  39       var graph_initialized = false;
  40
  41       g = new Dygraph(
  42               document.getElementById("g_div"),
  43               function() {
  44                 var zp = function(x) { if (x < 10) return "0"+x; else return x; };
  45                 var r = "date,parabola,line,another line,sine wave\n";
  46                 for (var i=1; i<=31; i++) {
  47                   r += "200610" + zp(i);
  48                   r += "," + 10*(i*(31-i));
  49                   r += "," + 10*(8*i);
  50                   r += "," + 10*(250 - 8*i);
  51                   r += "," + 10*(125 + 125 * Math.sin(0.3*i));
  52                   r += "\n";
  53                 }
  54                 return r;
  55               },
  56               {
  57                 rollPeriod: 1,
  58                 showRoller: true,
  59                 width: 480,
  60                 height: 320,
  61                 drawCallback: function(g, is_initial) {
  62                   if (is_initial) {
  63                     graph_initialized = true;
  64                     if (annotations.length > 0) {
  65                       g.setAnnotations(annotations);
  66                     }
  67                   }
  68
  69                   var ann = g.annotations();
  70                   var html = "";
  71                   for (var i = 0; i < ann.length; i++) {
  72                     var name = nameAnnotation(ann[i]);
  73                     html += "<span id='" + name + "'>"
  74                     html += name + ": " + (ann[i].shortText || '(icon)')
  75                     html += " -> " + ann[i].text + "</span><br/>";
  76                   }
  77                   document.getElementById("list").innerHTML = html;
  78                 }
  79               }
  80           );
  81
  82       var last_ann = 0;
  83       for (var x = 10; x < 15; x += 2) {
  84         annotations.push( {
  85           series: 'sine wave',
  86           x: "200610" + x,
  87           shortText: x,
  88           text: 'Stock Market Crash ' + x
  89         } );
  90         last_ann = x;
  91       }
  92       annotations.push( {
  93         series: 'another line',
  94         x: "20061013",
  95         icon: 'dollar.png',
  96         width: 18,
  97         height: 23,
  98         tickHeight: 4,
  99         text: 'Another one',
 100         cssClass: 'annotation',
 101         clickHandler: function() {
 102           document.getElementById("events").innerHTML += "special handler<br/>";
 103         }
 104       } );
 105       annotations.push( {
 106         series: 'parabola',
 107         x: '20061012',
 108         shortText: 'P',
 109         text: 'Parabola Annotation at same x-coord'
 110       } );
 111
 112       if (graph_initialized) {
 113         g.setAnnotations(annotations);
 114       }
 115
 116       function add() {
 117         var x = last_ann + 2;
 118         var annnotations = g.annotations();
 119         annotations.push( {
 120           series: 'line',
 121           x: "200610" + x,
 122           shortText: x,
 123           text: 'Line ' + x,
 124           tickHeight: 10
 125         } );
 126         last_ann = x;
 127         g.setAnnotations(annotations);
 128       }
 129
 130       function bottom(el) {
 131         var to_bottom = true;
 132         if (el.value != 'Shove to bottom') to_bottom = false;
 133
 134         var anns = g.annotations();
 135         for (var i = 0; i < anns.length; i++) {
 136           anns[i].attachAtBottom = to_bottom;
 137         }
 138         g.setAnnotations(anns);
 139
 140         if (to_bottom) {
 141           el.value = 'Lift back up';
 142         } else {
 143           el.value = 'Shove to bottom';
 144         }
 145       }
 146
 147       var saveBg = '';
 148       var num = 0;
 149       g.updateOptions( {
 150         annotationClickHandler: function(ann, point, dg, event) {
 151           eventDiv.innerHTML += "click: " + nameAnnotation(ann) + "<br/>";
 152         },
 153         annotationDblClickHandler: function(ann, point, dg, event) {
 154           eventDiv.innerHTML += "dblclick: " + nameAnnotation(ann) + "<br/>";
 155         },
 156         annotationMouseOverHandler: function(ann, point, dg, event) {
 157           document.getElementById(nameAnnotation(ann)).style.fontWeight = 'bold';
 158           saveBg = ann.div.style.backgroundColor;
 159           ann.div.style.backgroundColor = '#ddd';
 160         },
 161         annotationMouseOutHandler: function(ann, point, dg, event) {
 162           document.getElementById(nameAnnotation(ann)).style.fontWeight = 'normal';
 163           ann.div.style.backgroundColor = saveBg;
 164         },
 165
 166         pointClickCallback: function(event, p) {
 167           // Check if the point is already annotated.
 168           if (p.annotation) return;
 169
 170           // If not, add one.
 171           var ann = {
 172             series: p.name,
 173             xval: p.xval,
 174             shortText: num,
 175             text: "Annotation #" + num
 176           };
 177           var anns = g.annotations();
 178           anns.push(ann);
 179           g.setAnnotations(anns);
 180
 181           num++;
 182         }
 183       });
 184     </script>
 185 </body>
 186 </html>