Deletes the auto-generated files for resize and letterboxing created by Timber
| static public delete_generated_files ( string $local_file ) | ||
| $local_file | string | ex: /var/www/wp-content/uploads/2015/my-pic.jpg or: http://example.org/wp-content/uploads/2015/my-pic.jpg |
/**
* Deletes all resized versions of an image when the source is deleted
*/
protected static function add_actions()
{
add_action('delete_attachment', function ($post_id) {
$post = get_post($post_id);
$image_types = array('image/jpeg', 'image/png', 'image/gif', 'image/jpg');
if (in_array($post->post_mime_type, $image_types)) {
$attachment = new Image($post_id);
if ($attachment->file_loc) {
ImageHelper::delete_generated_files($attachment->file_loc);
}
}
});
}
/**
* Generate image sizes defined for Timmy with TimberImageHelper.
*
* @param int $attachment_id The attachment ID for which all images should be resized
* @return void
*/
private function timber_generate_sizes($attachment_id)
{
$img_sizes = get_image_sizes();
$attachment = get_post($attachment_id);
// Timber needs the file src as an url
$file_src = wp_get_attachment_url($attachment_id);
/**
* Delete all existing image sizes for that file.
*
* This way, when Regenerate Thumbnails will be used,
* all non-registered image sizes will be deleted as well.
* Because Timber creates image sizes when they’re needed,
* we can safely do this.
*/
Timber\ImageHelper::delete_generated_files($file_src);
foreach ($img_sizes as $key => $img_size) {
if (!$this->timber_should_resize($attachment->post_parent, $img_size)) {
continue;
}
$resize = $img_size['resize'];
// Get values for the default image
$crop = isset($resize[2]) ? $resize[2] : 'default';
$force = isset($resize[3]) ? $resize[3] : false;
image_downsize($attachment_id, $key);
if (isset($img_size['generate_srcset_sizes']) && false === $img_size['generate_srcset_sizes']) {
continue;
}
// Generate additional image sizes used for srcset
if (isset($img_size['srcset'])) {
foreach ($img_size['srcset'] as $src) {
// Get width and height for the additional src
if (is_array($src)) {
$width = $src[0];
$height = isset($src[1]) ? $src[1] : 0;
} else {
$width = (int) round($resize[0] * $src);
$height = isset($resize[1]) ? (int) round($resize[1] * $src) : 0;
}
// For the new source, we use the same $crop and $force values as the default image
self::resize($img_size, $file_src, $width, $height, $crop, $force);
}
}
}
}
/**
* Checks if attachment is an image before deleting generated files
*
* @param int $post_id an attachment post id
*
*/
public static function _delete_generated_if_image($post_id)
{
if (wp_attachment_is_image($post_id)) {
$attachment = new Image($post_id);
if ($attachment->file_loc) {
ImageHelper::delete_generated_files($attachment->file_loc);
}
}
}