tests/annotation.html

   1 <!DOCTYPE html>
   2 <html>
   3   <head>
   4     <link rel="stylesheet" href="../css/dygraph.css">
   5     <title>demo</title>
   6     <!--
   7     <script type="text/javascript" src="dygraph-combined.js"></script>
   8     -->
   9     <!--
  10     For production (minified) code, use:
  11     <script type="text/javascript" src="dygraph-combined.js"></script>
  12     -->
  13     <script type="text/javascript" src="../dist/dygraph.js"></script>
  14
  15     <style type="text/css">
  16     .annotation {
  17     }
  18     </style>
  19   </head>
  20   <body>
  21     <h3>Annotations Demo</h3>
  22     <p>Click any point to add an annotation to it or click "Add Annotation".</p>
  23     <input type="button" value="Add Annotation" onclick="add()" />
  24     <input type="button" value="Shove to bottom" onclick="bottom(this)" />
  25     <div id="events"> </div>
  26     <div style="position:absolute; left:200px; top: 200px;" id="g_div"></div>
  27     <div style="position:absolute; left:700px; top: 200px;" id="list"></div>
  28
  29     <script type="text/javascript">
  30       var eventDiv = document.getElementById("events");
  31       function nameAnnotation(ann) {
  32         return "(" + ann.series + ", " + ann.x + ")";
  33       }
  34
  35       annotations = [];
  36       var graph_initialized = false;
  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, is_initial) {
  59                   if (is_initial) {
  60                     graph_initialized = true;
  61                     if (annotations.length > 0) {
  62                       g.setAnnotations(annotations);
  63                     }
  64                   }
  65
  66                   var ann = g.annotations();
  67                   var html = "";
  68                   for (var i = 0; i < ann.length; i++) {
  69                     var name = nameAnnotation(ann[i]);
  70                     html += "<span id='" + name + "'>"
  71                     html += name + ": " + (ann[i].shortText || '(icon)')
  72                     html += " -> " + ann[i].text + "</span><br/>";
  73                   }
  74                   document.getElementById("list").innerHTML = html;
  75                 }
  76               }
  77           );
  78
  79       var last_ann = 0;
  80       for (var x = 10; x < 15; x += 2) {
  81         annotations.push( {
  82           series: 'sine wave',
  83           x: "200610" + x,
  84           shortText: x,
  85           text: 'Stock Market Crash ' + x
  86         } );
  87         last_ann = x;
  88       }
  89       annotations.push( {
  90         series: 'another line',
  91         x: "20061013",
  92         icon: 'dollar.png',
  93         width: 18,
  94         height: 23,
  95         tickHeight: 4,
  96         tickColor: 'indianred',
  97         tickWidth: 2,
  98         text: 'Another one',
  99         cssClass: 'annotation',
 100         clickHandler: function() {
 101           document.getElementById("events").innerHTML += "special handler<br/>";
 102         }
 103       } );
 104       annotations.push( {
 105         series: 'parabola',
 106         x: '20061012',
 107         shortText: 'P',
 108         text: 'Parabola Annotation at same x-coord'
 109       } );
 110
 111       if (graph_initialized) {
 112         g.setAnnotations(annotations);
 113       }
 114
 115       function add() {
 116         var x = last_ann + 2;
 117         var annnotations = g.annotations();
 118         annotations.push( {
 119           series: 'line',
 120           x: "200610" + x,
 121           shortText: x,
 122           text: 'Line ' + x,
 123           tickHeight: 10
 124         } );
 125         last_ann = x;
 126         g.setAnnotations(annotations);
 127       }
 128
 129       function bottom(el) {
 130         var to_bottom = true;
 131         if (el.value != 'Shove to bottom') to_bottom = false;
 132
 133         var anns = g.annotations();
 134         for (var i = 0; i < anns.length; i++) {
 135           anns[i].attachAtBottom = to_bottom;
 136         }
 137         g.setAnnotations(anns);
 138
 139         if (to_bottom) {
 140           el.value = 'Lift back up';
 141         } else {
 142           el.value = 'Shove to bottom';
 143         }
 144       }
 145
 146       var saveBg = '';
 147       var num = 0;
 148       g.updateOptions( {
 149         annotationClickHandler: function(ann, point, dg, event) {
 150           eventDiv.innerHTML += "click: " + nameAnnotation(ann) + "<br/>";
 151         },
 152         annotationDblClickHandler: function(ann, point, dg, event) {
 153           eventDiv.innerHTML += "dblclick: " + nameAnnotation(ann) + "<br/>";
 154         },
 155         annotationMouseOverHandler: function(ann, point, dg, event) {
 156           document.getElementById(nameAnnotation(ann)).style.fontWeight = 'bold';
 157           saveBg = ann.div.style.backgroundColor;
 158           ann.div.style.backgroundColor = '#ddd';
 159         },
 160         annotationMouseOutHandler: function(ann, point, dg, event) {
 161           document.getElementById(nameAnnotation(ann)).style.fontWeight = 'normal';
 162           ann.div.style.backgroundColor = saveBg;
 163         },
 164
 165         pointClickCallback: function(event, p) {
 166           // Check if the point is already annotated.
 167           if (p.annotation) return;
 168
 169           // If not, add one.
 170           var ann = {
 171             series: p.name,
 172             xval: p.xval,
 173             shortText: num,
 174             text: "Annotation #" + num
 175           };
 176           var anns = g.annotations();
 177           anns.push(ann);
 178           g.setAnnotations(anns);
 179
 180           num++;
 181         }
 182       });
 183     </script>
 184 </body>
 185 </html>