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       g = new Dygraph(
  39               document.getElementById("g_div"),
  40               function() {
  41                 var zp = function(x) { if (x < 10) return "0"+x; else return x; };
  42                 var r = "date,parabola,line,another line,sine wave\n";
  43                 for (var i=1; i<=31; i++) {
  44                   r += "200610" + zp(i);
  45                   r += "," + 10*(i*(31-i));
  46                   r += "," + 10*(8*i);
  47                   r += "," + 10*(250 - 8*i);
  48                   r += "," + 10*(125 + 125 * Math.sin(0.3*i));
  49                   r += "\n";
  50                 }
  51                 return r;
  52               },
  53               {
  54                 rollPeriod: 1,
  55                 showRoller: true,
  56                 width: 480,
  57                 height: 320,
  58                 drawCallback: function(g) {
  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       annotations = [];
  74       for (var x = 10; x < 15; x += 2) {
  75         annotations.push( {
  76           series: 'sine wave',
  77           x: "200610" + x,
  78           shortText: x,
  79           text: 'Stock Market Crash ' + x
  80         } );
  81         last_ann = x;
  82       }
  83       annotations.push( {
  84         series: 'another line',
  85         x: "20061013",
  86         icon: 'dollar.png',
  87         width: 18,
  88         height: 23,
  89         tickHeight: 4,
  90         text: 'Another one',
  91         cssClass: 'annotation',
  92         clickHandler: function() {
  93           document.getElementById("events").innerHTML += "special handler<br/>";
  94         }
  95       } );
  96       g.setAnnotations(annotations);
  97
  98       function add() {
  99         var x = last_ann + 2;
 100         var annnotations = g.annotations();
 101         annotations.push( {
 102           series: 'line',
 103           x: "200610" + x,
 104           shortText: x,
 105           text: 'Line ' + x,
 106           tickHeight: 10
 107         } );
 108         last_ann = x;
 109         g.setAnnotations(annotations);
 110       }
 111
 112       function bottom(el) {
 113         var to_bottom = true;
 114         if (el.value != 'Shove to bottom') to_bottom = false;
 115
 116         var anns = g.annotations();
 117         for (var i = 0; i < anns.length; i++) {
 118           anns[i].attachAtBottom = to_bottom;
 119         }
 120         g.setAnnotations(anns);
 121
 122         if (to_bottom) {
 123           el.value = 'Lift back up';
 124         } else {
 125           el.value = 'Shove to bottom';
 126         }
 127       }
 128
 129       var saveBg = '';
 130       var num = 0;
 131       g.updateOptions( {
 132         annotationClickHandler: function(ann, point, dg, event) {
 133           eventDiv.innerHTML += "click: " + nameAnnotation(ann) + "<br/>";
 134         },
 135         annotationDblClickHandler: function(ann, point, dg, event) {
 136           eventDiv.innerHTML += "dblclick: " + nameAnnotation(ann) + "<br/>";
 137         },
 138         annotationMouseOverHandler: function(ann, point, dg, event) {
 139           document.getElementById(nameAnnotation(ann)).style.fontWeight = 'bold';
 140           saveBg = ann.div.style.backgroundColor;
 141           ann.div.style.backgroundColor = '#ddd';
 142         },
 143         annotationMouseOutHandler: function(ann, point, dg, event) {
 144           document.getElementById(nameAnnotation(ann)).style.fontWeight = 'normal';
 145           ann.div.style.backgroundColor = saveBg;
 146         },
 147
 148         pointClickCallback: function(event, p) {
 149           // Check if the point is already annotated.
 150           if (p.annotation) return;
 151
 152           // If not, add one.
 153           var ann = {
 154             series: p.name,
 155             xval: p.xval,
 156             shortText: num,
 157             text: "Annotation #" + num
 158           };
 159           var anns = g.annotations();
 160           anns.push(ann);
 161           g.setAnnotations(anns);
 162
 163           num++;
 164         }
 165       });
 166     </script>
 167 </body>
 168 </html>