| | 30 | |
| | 31 | /** |
| | 32 | * Sanitize and normalize a geometry array based on the temporary image |
| | 33 | * width and height. Valid properties are: width, height, top, left. |
| | 34 | * |
| | 35 | * @param array geometry properties |
| | 36 | * @return void |
| | 37 | */ |
| | 38 | protected function sanitize_geometry( & $geometry) |
| | 39 | { |
| | 40 | list($width, $height) = $this->properties(); |
| | 41 | |
| | 42 | // Turn off error reporting |
| | 43 | $reporting = error_reporting(0); |
| | 44 | |
| | 45 | // Width and height cannot exceed current image size |
| | 46 | $geometry['width'] = min($geometry['width'], $width); |
| | 47 | $geometry['height'] = min($geometry['height'], $height); |
| | 48 | |
| | 49 | switch($geometry['top']) |
| | 50 | { |
| | 51 | case 'center': |
| | 52 | $geometry['top'] = floor(($height / 2) - ($geometry['height'] / 2)); |
| | 53 | break; |
| | 54 | case 'top': |
| | 55 | $geometry['top'] = 0; |
| | 56 | break; |
| | 57 | case 'bottom': |
| | 58 | $geometry['top'] = $height - $geometry['height']; |
| | 59 | break; |
| | 60 | } |
| | 61 | |
| | 62 | switch($geometry['left']) |
| | 63 | { |
| | 64 | case 'center': |
| | 65 | $geometry['left'] = floor(($width / 2) - ($geometry['width'] / 2)); |
| | 66 | break; |
| | 67 | case 'left': |
| | 68 | $geometry['left'] = 0; |
| | 69 | break; |
| | 70 | case 'right': |
| | 71 | $geometry['left'] = $width - $geometry['height']; |
| | 72 | break; |
| | 73 | } |
| | 74 | |
| | 75 | // Restore error reporting |
| | 76 | error_reporting($reporting); |
| | 77 | } |
| | 78 | |
| | 79 | /** |
| | 80 | * Return the current width and height of the temporary image. This is mainly |
| | 81 | * needed for sanitizing the geometry. |
| | 82 | * |
| | 83 | * @return array width, height |
| | 84 | */ |
| | 85 | abstract protected function properties(); |