<?php
defined( 'ABSPATH' ) || die;
/**
* The image field which uploads images via HTML <input type="file">.
*/
class RWMB_Image_Field extends RWMB_File_Field {
public static function admin_enqueue_scripts() {
parent::admin_enqueue_scripts();
wp_enqueue_media();
wp_enqueue_style( 'rwmb-image', RWMB_CSS_URL . 'image.css', [], RWMB_VER );
wp_style_add_data( 'rwmb-image', 'path', RWMB_CSS_DIR . 'image.css' );
}
/**
* 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 );
$edit_link = get_edit_post_link( $file );
if ( $edit_link ) {
$edit_link = sprintf( '<a href="%s" class="rwmb-image-edit" target="_blank"><span class="dashicons dashicons-edit"></span></a>', $edit_link );
}
$attachment_image = is_numeric( $file ) ? wp_get_attachment_image( $file, $field['image_size'] ) : '<img width="150" height="150" src="' . esc_url( $file ) . '" alt="" />';
return sprintf(
'<li class="rwmb-image-item">
<div class="rwmb-file-icon">%s</div>
<div class="rwmb-image-overlay"></div>
<div class="rwmb-image-actions">
%s
<a href="#" class="rwmb-image-delete rwmb-file-delete" data-attachment_id="%s"><span class="dashicons dashicons-no-alt"></span></a>
</div>
<input type="hidden" name="%s[%s]" value="%s">
</li>',
$attachment_image,
$edit_link,
esc_attr( $file ),
esc_attr( $attributes['name'] ),
esc_attr( $index ),
esc_attr( $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, [ 'image_size' => 'thumbnail' ] );
$field['attributes'] = wp_parse_args( $field['attributes'], [ 'accept' => 'image/*' ] );
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( '<img src="%s" alt="%s">', esc_url( $value['url'] ), esc_attr( $value['alt'] ) );
// Link thumbnail to full size image?
if ( ! empty( $args['link'] ) ) {
$output = sprintf( '<a href="%s" title="%s">%s</a>', 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).
* @param array $field Field settings.
*
* @return array|bool False if file not found. Array of image info on success.
*/
public static function file_info( $file, $args = [], $field = [] ) {
$path = get_attached_file( $file );
if ( ! $path ) {
return false;
}
$args = wp_parse_args( $args, [ 'size' => 'thumbnail' ] );
$image = wp_get_attachment_image_src( $file, $args['size'] );
if ( ! $image ) {
return false;
}
$attachment = get_post( $file );
$info = [
'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, self::get_image_meta_data( $file ) );
// Do not overwrite width and height by returned value of image meta.
$info['width'] = $image[1];
$info['height'] = $image[2];
return $info;
}
/**
* Get image meta data.
*
* @param int $attachment_id Attachment ID.
* @return array
*/
protected static function get_image_meta_data( $attachment_id ) {
$metadata = wp_get_attachment_metadata( $attachment_id );
if ( empty( $metadata['sizes'] ) ) {
return $metadata;
}
$dir_url = dirname( wp_get_attachment_url( $attachment_id ) );
foreach ( $metadata['sizes'] as &$size ) {
$size['url'] = "{$dir_url}/{$size['file']}";
}
return $metadata;
}
}