function image_filter_keyword

Accepts a keyword (center, top, left, etc) and returns it as a pixel offset.

Parameters

$value:

$current_pixels:

$new_pixels:

1 call to image_filter_keyword()
image_crop_effect in drupal/modules/image/image.effects.inc
Image effect callback; Crop an image resource.

File

drupal/modules/image/image.module, line 1392
Exposes global functionality for creating image styles.

Code

function image_filter_keyword($value, $current_pixels, $new_pixels) {
  switch ($value) {
    case 'top':
    case 'left':
      return 0;
    case 'bottom':
    case 'right':
      return $current_pixels - $new_pixels;
    case 'center':
      return $current_pixels / 2 - $new_pixels / 2;
  }
  return $value;
}