/**
* Generate a placeholder at a given size.
*
* @param int $id Attachment ID.
* @param string $size Image size.
* @param int $radius Blur radius.
* @return array|null 3-tuple of binary image data (string), width (int), height (int) on success; null on error.
*/
function generate_placeholder($id, $size, $radius)
{
$size_data = get_size_data($size);
if ($size !== 'full' && empty($size_data)) {
_doing_it_wrong(__FUNCTION__, __('Invalid image size enabled for placeholders', 'gaussholder'));
return null;
}
$img = wp_get_attachment_image_src($id, $size);
$uploads = wp_upload_dir();
$path = str_replace($uploads['baseurl'], $uploads['basedir'], $img[0]);
return JPEG\data_for_file($path, $radius);
}
/**
* Check how big the placeholder will be for an image or file with a given
* radius.
*
* @subcommand check-size
* @synopsis <id_or_file> <radius>
* @param array $args
*/
public function check_size($args)
{
if (is_numeric($args[0])) {
$attachment_id = absint($args[0]);
$file = get_attached_file($attachment_id);
if (empty($file)) {
WP_CLI::error(__('Attachment does not exist', 'gaussholder'));
}
} else {
$file = $args[1];
}
if (!file_exists($file)) {
WP_CLI::error(sprintf(__('File %s does not exist', 'gaussholder'), $file));
}
// Generate a placeholder with the radius
$radius = absint($args[1]);
$data = JPEG\data_for_file($file, $radius);
WP_CLI::line(sprintf('%s: %dB (%dpx radius)', basename($file), strlen($data[0]), $radius));
}
