Retina image helper

gistfile1.txt

	/**
	 * Based on a single key, retrieve the data for a particular image, including whether it is retina and its dimensions.
	 *
	 * @param string $key
	 * @return false if not set, or array if set
	 * @access private
	 * @since 1.0
	 */
	private function get_image_data($key) {
		$data = array();

        $key_value = get_theme_mod( $key );

		if ( ! strlen( $key_value ) ) {
			return false;
		}

		$data['width'] = $this->theme->get_theme_setting($key . '_width');
		$data['height'] = $this->theme->get_theme_setting($key . '_height');

		if ( $this->theme->get_theme_setting($key . '_is_retina') ) {

			/**
			 * Retrieve the post ID of the logo, then get the non-retina version. 
			 */
			$data['id'] = get_theme_mod( $key . '_id' );
			$data['image'] = get_post_meta( $data['id'], '_non_retina', true );
			$data['retina_image'] = $key_value;
		}
		else {
			$data['image'] = $key_value;
		}

		return $data;
	}