.
*
* @package Meta Box
*/
/**
* Image field class which uses to upload.
*/
class RWMB_Image_Field extends RWMB_File_Field {
/**
* Enqueue scripts and styles.
*/
public static function admin_enqueue_scripts() {
parent::admin_enqueue_scripts();
wp_enqueue_media();
wp_enqueue_style( 'rwmb-image', RWMB_CSS_URL . 'image.css', array(), RWMB_VER );
}
/**
* Get HTML for uploaded file.
*
* @param int $file Attachment (file) ID.
* @param int $index File index.
* @param array $field Field data.
*
* @return string
*/
protected static function file_html( $file, $index, $field ) {
$attributes = self::get_attributes( $field, $file );
return sprintf(
'
',
esc_attr( $field['image_size'] ),
$attributes['name'],
$index,
$file,
wp_get_attachment_image( $file, $field['image_size'] ),
get_edit_post_link( $file ),
$file
);
}
/**
* Normalize field settings.
*
* @param array $field Field settings.
*
* @return array
*/
public static function normalize( $field ) {
$field = parent::normalize( $field );
$field = wp_parse_args(
$field,
array(
'image_size' => 'thumbnail',
)
);
return $field;
}
/**
* Format a single value for the helper functions. Sub-fields should overwrite this method if necessary.
*
* @param array $field Field parameters.
* @param array $value The value.
* @param array $args Additional arguments. Rarely used. See specific fields for details.
* @param int|null $post_id Post ID. null for current post. Optional.
*
* @return string
*/
public static function format_single_value( $field, $value, $args, $post_id ) {
$output = sprintf( '
', esc_url( $value['url'] ), esc_attr( $value['alt'] ) );
// Link thumbnail to full size image?
if ( ! empty( $args['link'] ) ) {
$output = sprintf( '%s', esc_url( $value['full_url'] ), esc_attr( $value['title'] ), $output );
}
return $output;
}
/**
* Get uploaded file information.
*
* @param int $file Attachment image ID (post ID). Required.
* @param array $args Array of arguments (for size).
*
* @return array|bool False if file not found. Array of image info on success.
*/
public static function file_info( $file, $args = array() ) {
$path = get_attached_file( $file );
if ( ! $path ) {
return false;
}
$args = wp_parse_args(
$args,
array(
'size' => 'thumbnail',
)
);
$image = wp_get_attachment_image_src( $file, $args['size'] );
$attachment = get_post( $file );
$info = array(
'ID' => $file,
'name' => basename( $path ),
'path' => $path,
'url' => $image[0],
'full_url' => wp_get_attachment_url( $file ),
'title' => $attachment->post_title,
'caption' => $attachment->post_excerpt,
'description' => $attachment->post_content,
'alt' => get_post_meta( $file, '_wp_attachment_image_alt', true ),
);
if ( function_exists( 'wp_get_attachment_image_srcset' ) ) {
$info['srcset'] = wp_get_attachment_image_srcset( $file, $args['size'] );
}
$info = wp_parse_args( $info, wp_get_attachment_metadata( $file ) );
// Do not overwrite width and height by returned value of image meta.
$info['width'] = $image[1];
$info['height'] = $image[2];
return $info;
}
}