Eigene Bildgrößen nach dem Skalieren erzeugen

add_theme_support( 'post-thumbnails' );


$my_image_sizes = array(
    array( 'name'=>'featuredImageTop', 'width'=>976, 'height'=>325, 'crop'=>true ),
    array( 'name'=>'featuredImageArticle', 'width'=>300, 'height'=>300, 'crop'=>true )
);




// For each new image size, run add_image_size() and update_option() to add the necessary info.
// update_option() is good because it only updates the database if the value has changed. It also adds the option if it doesn't exist
foreach ( $my_image_sizes as $my_image_size )
{
    add_image_size( $my_image_size['name'], $my_image_size['width'], $my_image_size['height'], $my_image_size['crop'] );
    update_option( $my_image_size['name']."_size_w", $my_image_size['width'] );
    update_option( $my_image_size['name']."_size_h", $my_image_size['height'] );
    update_option( $my_image_size['name']."_crop", $my_image_size['crop'] );
}




// Hook into the 'intermediate_image_sizes' filter used by image-edit.php.
// This adds the custom sizes into the array of sizes it uses when editing/saving images.
add_filter( 'intermediate_image_sizes', 'my_add_image_sizes' );
function my_add_image_sizes( $sizes )
{
    global $my_image_sizes;
    foreach ( $my_image_sizes as $my_image_size )
    {
         $sizes[] = $my_image_size['name'];
    }
    return $sizes;
}

if ( 'nothumb' == $target || 'all' == $target || 'full' == $target || $scaled ) 
{
    $tag = false;
    if ( isset($backup_sizes['full-orig']) ) {
        if ( ( !defined('IMAGE_EDIT_OVERWRITE') || !IMAGE_EDIT_OVERWRITE ) && $backup_sizes['full-orig']['file'] != $path_parts['basename'] )
            $tag = "full-$suffix";
    } else {
        $tag = 'full-orig';
    }




    if ( $tag )
        $backup_sizes[$tag] = array('width' => $meta['width'], 'height' => $meta['height'], 'file' => $path_parts['basename']);




    $success = update_attached_file( $post_id, $new_path );




    $meta['file'] = _wp_relative_upload_path( $new_path );




    $size = $img->get_size();
    $meta['width'] = $size['width'];
    $meta['height'] = $size['height'];
    if ( $success && ('nothumb' == $target || 'all' == $target) ) {
        $sizes = get_intermediate_image_sizes();
        if ( 'nothumb' == $target )
            $sizes = array_diff( $sizes, array('thumbnail') );
    }




    $return->fw = $meta['width'];
    $return->fh = $meta['height'];
} elseif ( 'thumbnail' == $target ) {
    $sizes = array( 'thumbnail' );
    $success = $delete = $nocrop = true;
}