15 min: Number.MAX_VALUE,
16 max: Number.MIN_VALUE,
29 var ul = $('ul#facet');
31 ul.find('li label').each( function(){
32 var v = parseFloat( $(this).text() );
33 if ( isNaN(v) ) v = 0;
34 if ( v > data.x.max ) data.x.max = v;
35 if ( v < data.x.min ) data.x.min = v;
36 data.x.data.push( v );
39 ul.find('li span.count').each( function(){
40 var v = parseFloat( $(this).text() ); // FIXME not numeric!
41 if ( isNaN(v) ) v = 0;
42 if ( v > data.y.max ) data.y.max = v;
43 if ( v < data.y.min ) data.y.min = v;
44 data.y.data.push( v );
47 data.y.min = 0; // XXX force to 0, because it's count
49 data.x.range = data.x.max - data.x.min;
50 data.y.range = data.y.max - data.y.min;
54 data.numeric = $('span#numeric').length;
55 data.x.inc_bar = data.numeric
56 ? Math.round( data.width / data.x.range )
57 : data.width / data.x.data.length
60 var canvas = $('<canvas/>');
67 var canvasContain = $('<div class="chart"></div>')
68 .css({ width: data.width, height: data.height })
72 var ctx = canvas[0].getContext('2d');
73 ctx.translate( 0, data.height ); // start at bottom left
75 ctx.strokeStyle = '#ff8800';
76 ctx.fillStyle = '#ffcc88';
81 for( var i in data.x.data ) {
82 var x = data.x.data[i];
83 if ( data.numeric ) x = Math.ceil( ( x - data.x.min ) / data.x.range * data.width );
84 var y = Math.ceil( ( data.y.data[i] - data.y.min ) / data.y.range * data.height );
89 var x_px = i * data.x.inc_bar;
90 console.debug( x_px, y );
91 ctx.fillRect( x_px, 0, data.x.inc_bar, -y );
92 ctx.strokeRect( x_px, 0, data.x.inc_bar, -y );
99 function draw_labels(class_name,axis,size,css_pos,last_css_pos) {
101 var labels = $('<ul class="'+class_name+'"></ul>')
102 .css({ width: data.width, height: data.height, position: 'absolute' });
104 axis.num_labels = Math.round( size / axis.label_spacing );
105 if ( axis.num_labels > axis.range ) axis.num_labels = axis.range;
106 axis.inc = Math.ceil( axis.range / axis.num_labels );
107 axis.inc_px = Math.ceil( size / axis.num_labels );
110 for( var val = axis.min; val < axis.max ; val += axis.inc ) {
111 $('<li style="'+css_pos+': '+pos+'px"><span class="line"></span><span class="label">' + val + '</span></li>')
116 $('<li style="'+last_css_pos+'"><span class="line"></span><span class="label">' + axis.max + '</span></li>')
119 labels.appendTo(canvasContain);
123 if ( data.numeric ) draw_labels( 'labels-x', data.x, data.width, 'left', 'right:0px' );
125 draw_labels( 'labels-y', data.y, data.height, 'bottom', 'bottom:'+data.height+'px' );
128 console.debug( 'data', data );