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Source View: image_resize_dimensions

To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).

Understanding Source Code

The best way to understand what a hook does is to look at where it occurs in the source code.

  • Action hooks look like this: do_action( "hook_name" )
  • Filter hooks look like this: apply_filters( "hook_name", "what_to_filter" ).

Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.

Source View

Line Code
340 function image_resize_dimensions($orig_w, $orig_h, $dest_w, $dest_h, $crop = false) {
341
342      if ($orig_w <= 0 || $orig_h <= 0)
343           return false;
344      // at least one of dest_w or dest_h must be specific
345      if ($dest_w <= 0 && $dest_h <= 0)
346           return false;
347
348      // plugins can use this to provide custom resize dimensions
349      $output = apply_filters( 'image_resize_dimensions', null, $orig_w, $orig_h, $dest_w, $dest_h, $crop );
350      if ( null !== $output )
351           return $output;
352
353      if ( $crop ) {
354           // crop the largest possible portion of the original image that we can size to $dest_w x $dest_h
355           $aspect_ratio = $orig_w / $orig_h;
356           $new_w = min($dest_w, $orig_w);
357           $new_h = min($dest_h, $orig_h);
358