1 $(document).ready( function() {
3 var count = parseInt( $('#facet-count').text() );
5 console.debug( 'skip graph', count );
8 console.debug( 'drawing graph', count );
12 min: Number.MAX_VALUE,
13 max: Number.MIN_VALUE,
23 min: Number.MAX_VALUE,
24 max: Number.MIN_VALUE,
35 var ul = $('ul#facet');
37 ul.find('li label').each( function(){
38 var v = parseFloat( $(this).text() );
39 if ( isNaN(v) ) v = 0;
40 if ( v > data.x.max ) data.x.max = v;
41 if ( v < data.x.min ) data.x.min = v;
42 data.x.data.push( v );
45 ul.find('li span.count').each( function(){
46 var v = parseFloat( $(this).text() ); // FIXME not numeric!
47 if ( isNaN(v) ) v = 0;
48 if ( v > data.y.max ) data.y.max = v;
49 if ( v < data.y.min ) data.y.min = v;
50 data.y.data.push( v );
53 data.y.min = 0; // XXX force to 0, because it's count
55 data.x.range = data.x.max - data.x.min;
56 data.y.range = data.y.max - data.y.min;
60 data.numeric = $('span#numeric').length;
61 data.x.inc_bar = data.numeric
62 ? Math.round( data.width / data.x.range )
63 : data.width / data.x.data.length
66 var canvas = $('<canvas/>');
73 var canvasContain = $('<div class="chart"></div>')
74 .css({ width: data.width, height: data.height })
78 var ctx = canvas[0].getContext('2d');
79 ctx.translate( 0, data.height ); // start at bottom left
81 ctx.strokeStyle = '#ff8800';
82 ctx.fillStyle = '#ffcc88';
87 var elements = data.x.data.length;
88 var step = elements / data.width;
89 console.debug( elements, step );
90 if ( step < 1 ) step = 1;
92 while( i_float < elements ) {
93 var i = i_float.toFixed();
94 var x = data.x.data[i];
95 if ( data.numeric ) x = Math.ceil( ( x - data.x.min ) / data.x.range * data.width );
96 var y = Math.ceil( ( data.y.data[i] - data.y.min ) / data.y.range * data.height );
101 var x_px = i * data.x.inc_bar;
102 // console.debug( x_px, y );
103 ctx.fillRect( x_px, 0, data.x.inc_bar, -y );
104 ctx.strokeRect( x_px, 0, data.x.inc_bar, -y );
112 function draw_labels(class_name,axis,size,css_pos,last_css_pos) {
114 var labels = $('<ul class="'+class_name+'"></ul>')
115 .css({ width: data.width, height: data.height, position: 'absolute' });
117 axis.num_labels = Math.round( size / axis.label_spacing );
118 if ( axis.num_labels > axis.range ) axis.num_labels = axis.range;
119 axis.inc = Math.ceil( axis.range / axis.num_labels );
121 for( var val = axis.min; val < axis.max ; val += axis.inc ) {
122 var pos = Math.ceil( ( val - axis.min ) / axis.range * size );
123 $('<li style="'+css_pos+': '+pos+'px"><span class="line"></span><span class="label">' + val + '</span></li>')
127 $('<li style="'+last_css_pos+'"><span class="line"></span><span class="label">' + axis.max + '</span></li>')
130 labels.appendTo(canvasContain);
134 if ( data.numeric ) draw_labels( 'labels-x', data.x, data.width, 'left', 'right:0px' );
136 draw_labels( 'labels-y', data.y, data.height, 'bottom', 'bottom:'+data.height+'px' );
139 console.debug( 'data', data );
141 }); // document.ready