function imagecache_actions_percent_filter in ImageCache Actions 7

Same name and namespace in other branches

1. 8 utility.inc \imagecache_actions_percent_filter()

Computes a length based on a length specification and an actual length.

Examples: (50, 400) returns 50; (50px, 400) returns 50; (50%, 400) returns 200; (50, null) returns 50; (50%, null) returns null; (null, null) returns null; (null, 100) returns null.

Parameters

string|null $length_specification: The length specification. An integer constant optionally followed by 'px' or '%'.

int|null $current_length: The current length. May be null.

Return value

int|null

2 calls to imagecache_actions_percent_filter()

canvasactions_definecanvas_dimensions in canvasactions/canvasactions.inc

Image dimensions callback for the define canvas effect.

canvasactions_definecanvas_effect in canvasactions/canvasactions.inc

Image effect callback for the define canvas effect.

File

./utility.inc, line 539

utility.inc: uitility form, conversion and rendering functions for image processing.

Code

function imagecache_actions_percent_filter($length_specification, $current_length) {
  if (strpos($length_specification, '%') !== FALSE) {
    $length_specification = $current_length !== NULL ? str_replace('%', '', $length_specification) * 0.01 * $current_length : NULL;
  }
  else {

    // Strips 'px' if available.
    $length_specification = (int) $length_specification;
  }
  return $length_specification;
}