| | 75 | } |
| | 76 | |
| | 77 | function freeblock_to_graph($freeblocks, $size) |
| | 78 | { |
| | 79 | global $free_graph_width; |
| | 80 | |
| | 81 | // cached in static variable |
| | 82 | static $graph_initial; |
| | 83 | if (!isset($graph_initial)) { |
| | 84 | for ($i = 0; $i < $free_graph_width; $i ++) { |
| | 85 | $graph_initial[$i] = 0; |
| | 86 | } |
| | 87 | } |
| | 88 | $graph = $graph_initial; |
| | 89 | foreach ($freeblocks as $b) { |
| | 90 | $begin = $b['offset'] / $size * $free_graph_width; |
| | 91 | $end = ($b['offset'] + $b['size']) / $size * $free_graph_width; |
| | 92 | |
| | 93 | $graph[(int) $begin] += 1 - ($begin - (int) $begin); |
| | 94 | $graph[(int) $end] += ($end - (int) $end); |
| | 95 | for ($i = (int) $begin + 1, $e = (int) $end; $i < $e; $i ++) { |
| | 96 | $graph[$i] = 1; |
| | 97 | } |
| | 98 | } |
| | 99 | $html = array(); |
| | 100 | $c = 255; |
| | 101 | foreach ($graph as $k => $v) { |
| | 102 | $v = (int) ($v * $c); |
| | 103 | $r = $g = $c - $v; |
| | 104 | $b = $c; |
| | 105 | $html[] = '<div style="background: rgb(' . "$r,$g,$b" . ')"></div>'; |
| | 106 | } |
| | 107 | return implode('', $html); |
