function imagecache_build_derivative in ImageCache 5.2

Same name and namespace in other branches

1. 6.2 imagecache.module \imagecache_build_derivative()

build an image cache derivative

Parameters

$actions Array of imagecache actions.:

$src Path of the source file.:

$dst Path of the destination file.:

$tmp Path of the temporary file used for manipulating the image.:

Return value

true - derivative generated, false - no derivative generated, null - derivative being generated

2 calls to imagecache_build_derivative()

imagecache_image_alter in ./imagecache_image.module

Implementation of hook_image_alter()

_imagecache_cache in ./imagecache.module

handle request validation and responses to imagecache requests.

File

./imagecache.module, line 458

Dynamic image resizer and image cacher.

Code

function imagecache_build_derivative($actions, $src, $dst) {

  // get the folder for the final location of this preset...
  $dir = dirname($dst);

  // Build the destination folder tree if it doesn't already exists.
  if (!file_check_directory($dir) && !mkdir($dir, 0775, true)) {
    watchdog('imagecache', t('Failed to create imagecache directory: %dir', array(
      '%dir' => $dir,
    )), WATCHDOG_ERROR);
    return false;
  }
  if (!($image = imageapi_image_open($src))) {
    return false;
  }
  foreach ($actions as $action) {
    if (!empty($action['data'])) {

      // QuickSketch, why do these run first/twice? - dopry.
      if (isset($action['data']['width'])) {
        $width = _imagecache_filter('width', $action['data']['width'], $image->info['width'], $image->info['height']);
      }
      if (isset($action['data']['height'])) {
        $height = _imagecache_filter('height', $action['data']['height'], $image->info['width'], $image->info['height']);
      }
      foreach ($action['data'] as $key => $value) {
        $action['data'][$key] = _imagecache_filter($key, $value, $image->info['width'], $image->info['height'], $width, $height);
      }
    }
    if (!_imagecache_apply_action($action, $image)) {
      watchdog('imagecache', t('action(id:%id): %action failed for %src', array(
        '%id' => $action['actionid'],
        '%action' => $action['action'],
        '%src' => $src,
      )), WATCHDOG_ERROR);
      return false;
    }
  }
  if (!imageapi_image_close($image, $dst)) {
    if (file_exists($dst)) {
      watchdog('imagecache', t('Cached image file already exists. There is an issue with your Rewrite configuration.'), WATCHDOG_ERROR);
    }
    return false;
  }
  return true;
}