source/php/Module/Image/Image.php
public function appendImageSizes($field)
    {
        $sizes = get_intermediate_image_sizes();
        foreach ($sizes as $size) {
            $field['choices'][$size] = $size;
        }

        return $field;
    }
public function appendImageSizes($field)
    {
        $sizes = get_intermediate_image_sizes();
        foreach ($sizes as $size) {
            $field['choices'][$size] = $size;
        }

        return $field;
    }
public function appendImageSizes ( $ field ) { $ sizes = get_intermediate_image_sizes ( ) ; foreach ( $ sizes as $ size ) { $ field [ 'choices' ] [ $ size ] = $ size ; } return $ field ; }
Creates a list of predefined sizes to choose from
@return array
Creates a list of predefined sizes to choose from