stream_preview_image
Streams image in post to browser, along with enqueued changes in $_REQUEST['history'].
Description
stream_preview_image( (int) $post_id );
Parameters (1)
- 0. $post_id (int)
- The post id.
Usage
if ( !function_exists( 'stream_preview_image' ) ) { require_once ABSPATH . '/wp-admin/includes/image-edit.php'; } // The post id. $post_id = -1; // NOTICE! Understand what this does before running. $result = stream_preview_image($post_id);
Defined (1)
The function is defined in the following location(s).
- /wp-admin/includes/image-edit.php
- function stream_preview_image( $post_id ) {
- $post = get_post( $post_id );
- wp_raise_memory_limit( 'admin' );
- $img = wp_get_image_editor( _load_image_to_edit_path( $post_id ) );
- if ( is_wp_error( $img ) ) {
- return false;
- }
- $changes = !empty($_REQUEST['history']) ? json_decode( wp_unslash($_REQUEST['history']) ) : null;
- if ( $changes )
- $img = image_edit_apply_changes( $img, $changes );
- // Scale the image.
- $size = $img->get_size();
- $w = $size['width'];
- $h = $size['height'];
- $ratio = _image_get_preview_ratio( $w, $h );
- $w2 = max ( 1, $w * $ratio );
- $h2 = max ( 1, $h * $ratio );
- if ( is_wp_error( $img->resize( $w2, $h2 ) ) )
- return false;
- return wp_stream_image( $img, $post->post_mime_type, $post_id );
- }