14 min: Number.MAX_VALUE,
15 max: Number.MIN_VALUE,
26 var ul = $('ul#facet');
28 ul.find('li label').each( function(){
29 var v = parseFloat( $(this).text() );
30 if ( isNaN(v) ) v = 0;
31 if ( v > data.x.max ) data.x.max = v;
32 if ( v < data.x.min ) data.x.min = v;
33 data.x.data.push( v );
36 ul.find('li span.count').each( function(){
37 var v = parseFloat( $(this).text() ); // FIXME not numeric!
38 if ( isNaN(v) ) v = 0;
39 if ( v > data.y.max ) data.y.max = v;
40 if ( v < data.y.min ) data.y.min = v;
41 data.y.data.push( v );
44 data.y.min = 0; // XXX force to 0, because it's count
46 data.x.range = data.x.max - data.x.min;
47 data.y.range = data.y.max - data.y.min;
51 data.numeric = $('span#numeric').length;
52 data.x.inc_bar = data.numeric
53 ? Math.round( data.width / data.x.range )
54 : data.width / data.x.data.length
57 var canvas = $('<canvas/>');
64 var canvasContain = $('<div class="chart"></div>')
65 .css({ width: data.width, height: data.height })
69 var ctx = canvas[0].getContext('2d');
70 ctx.translate( 0, data.height ); // start at bottom left
72 ctx.strokeStyle = '#ff8800';
73 ctx.fillStyle = '#ffcc88';
78 var elements = data.x.data.length;
79 var step = elements / data.width;
80 console.debug( elements, step );
81 if ( step < 1 ) step = 1;
83 while( i_float < elements ) {
84 var i = i_float.toFixed();
85 var x = data.x.data[i];
86 if ( data.numeric ) x = Math.ceil( ( x - data.x.min ) / data.x.range * data.width );
87 var y = Math.ceil( ( data.y.data[i] - data.y.min ) / data.y.range * data.height );
92 var x_px = i * data.x.inc_bar;
93 // console.debug( x_px, y );
94 ctx.fillRect( x_px, 0, data.x.inc_bar, -y );
95 ctx.strokeRect( x_px, 0, data.x.inc_bar, -y );
103 function draw_labels(class_name,axis,size,css_pos,last_css_pos) {
105 var labels = $('<ul class="'+class_name+'"></ul>')
106 .css({ width: data.width, height: data.height, position: 'absolute' });
108 axis.num_labels = Math.round( size / axis.label_spacing );
109 if ( axis.num_labels > axis.range ) axis.num_labels = axis.range;
110 axis.inc = Math.ceil( axis.range / axis.num_labels );
112 for( var val = axis.min; val < axis.max ; val += axis.inc ) {
113 var pos = Math.ceil( ( val - axis.min ) / axis.range * size );
114 $('<li style="'+css_pos+': '+pos+'px"><span class="line"></span><span class="label">' + val + '</span></li>')
118 $('<li style="'+last_css_pos+'"><span class="line"></span><span class="label">' + axis.max + '</span></li>')
121 labels.appendTo(canvasContain);
125 if ( data.numeric ) draw_labels( 'labels-x', data.x, data.width, 'left', 'right:0px' );
127 draw_labels( 'labels-y', data.y, data.height, 'bottom', 'bottom:'+data.height+'px' );
130 console.debug( 'data', data );