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Edit File : class-wc-regenerate-images.php \| Size : 15.44 KB
<?php /** * Regenerate Images Functionality * * All functionality pertaining to regenerating product images in realtime. * * @package WooCommerce\Classes * @version 3.5.0 * @since 3.3.0 / defined( 'ABSPATH' ) \|\| exit; /* * Regenerate Images Class / class WC_Regenerate_Images { /* * Background process to regenerate all images * * @var WC_Regenerate_Images_Request / protected static $background_process; /* * Stores size being generated on the fly. * * @var string / protected static $regenerate_size; /* * Init function / public static function init() { add_action( 'image_get_intermediate_size', array( __CLASS__, 'filter_image_get_intermediate_size' ), 10, 3 ); add_filter( 'wp_generate_attachment_metadata', array( __CLASS__, 'add_uncropped_metadata' ) ); add_filter( 'wp_get_attachment_image_src', array( __CLASS__, 'maybe_resize_image' ), 10, 4 ); // Not required when Jetpack Photon is in use. if ( method_exists( 'Jetpack', 'is_module_active' ) && Jetpack::is_module_active( 'photon' ) ) { return; } if ( apply_filters( 'woocommerce_background_image_regeneration', true ) ) { include_once WC_ABSPATH . 'includes/class-wc-regenerate-images-request.php'; self::$background_process = new WC_Regenerate_Images_Request(); add_action( 'admin_init', array( __CLASS__, 'regenerating_notice' ) ); add_action( 'woocommerce_hide_regenerating_thumbnails_notice', array( __CLASS__, 'dismiss_regenerating_notice' ) ); // Regenerate thumbnails in the background after settings changes. Not ran on multisite to avoid multiple simultaneous jobs. if ( ! is_multisite() ) { add_action( 'customize_save_after', array( __CLASS__, 'maybe_regenerate_images' ) ); add_action( 'after_switch_theme', array( __CLASS__, 'maybe_regenerate_images' ) ); } } } /* * If an intermediate size meta differs from the actual image size (settings were changed?) return false so the wrong size is not used. * * @param array $data Size data. * @param int $attachment_id Attachment ID. * @param string $size Size name. * @return array / public static function filter_image_get_intermediate_size( $data, $attachment_id, $size ) { if ( ! is_string( $size ) \|\| ! in_array( $size, apply_filters( 'woocommerce_image_sizes_to_resize', array( 'woocommerce_thumbnail', 'woocommerce_gallery_thumbnail', 'woocommerce_single' ) ), true ) ) { return $data; } // If we don't have sizes, we cannot proceed. if ( ! isset( $data['width'], $data['height'] ) ) { return $data; } // See if the image size has changed from our settings. if ( ! self::image_size_matches_settings( $data, $size ) ) { // If Photon is running we can just return false and let Jetpack handle regeneration. if ( method_exists( 'Jetpack', 'is_module_active' ) && Jetpack::is_module_active( 'photon' ) ) { return false; } else { // If we get here, Jetpack is not running and we don't have the correct image sized stored. Try to return closest match. $size_data = wc_get_image_size( $size ); return image_get_intermediate_size( $attachment_id, array( absint( $size_data['width'] ), absint( $size_data['height'] ) ) ); } } return $data; } /* * We need to track if uncropped was on or off when generating the images. * * @param array $meta_data Array of meta data. * @return array / public static function add_uncropped_metadata( $meta_data ) { $size_data = wc_get_image_size( 'woocommerce_thumbnail' ); if ( isset( $meta_data['sizes'], $meta_data['sizes']['woocommerce_thumbnail'] ) ) { $meta_data['sizes']['woocommerce_thumbnail']['uncropped'] = empty( $size_data['height'] ); } return $meta_data; } /* * See if an image's dimensions match actual settings. * * @param array $image Image dimensions array. * @param string $size Named size. * @return bool True if they match. False if they do not (may trigger regen). / protected static function image_size_matches_settings( $image, $size ) { $target_size = wc_get_image_size( $size ); $uncropped = '' === $target_size['width'] \|\| '' === $target_size['height']; if ( ! $uncropped ) { $ratio_match = wp_image_matches_ratio( $image['width'], $image['height'], $target_size['width'], $target_size['height'] ); // Size is invalid if the widths or crop setting don't match. if ( $ratio_match && $target_size['width'] !== $image['width'] ) { return false; } // Size is invalid if the heights don't match. if ( $ratio_match && $target_size['height'] && $target_size['height'] !== $image['height'] ) { return false; } } // If cropping mode has changed, regenerate the image. if ( $uncropped && empty( $image['uncropped'] ) ) { return false; } return true; } /* * Show notice when job is running in background. / public static function regenerating_notice() { if ( ! self::$background_process->is_running() ) { WC_Admin_Notices::add_notice( 'regenerating_thumbnails' ); } else { WC_Admin_Notices::remove_notice( 'regenerating_thumbnails' ); } } /* * Dismiss notice and cancel jobs. / public static function dismiss_regenerating_notice() { if ( self::$background_process ) { self::$background_process->kill_process(); $log = wc_get_logger(); $log->info( __( 'Cancelled product image regeneration job.', 'woocommerce' ), array( 'source' => 'wc-image-regeneration', ) ); } WC_Admin_Notices::remove_notice( 'regenerating_thumbnails' ); } /* * Regenerate images if the settings have changed since last re-generation. * * @return void / public static function maybe_regenerate_images() { $size_hash = md5( wp_json_encode( array( wc_get_image_size( 'thumbnail' ), wc_get_image_size( 'single' ), wc_get_image_size( 'gallery_thumbnail' ), ) ) ); if ( update_option( 'woocommerce_maybe_regenerate_images_hash', $size_hash ) ) { // Size settings have changed. Trigger regen. self::queue_image_regeneration(); } } /* * Check if we should maybe generate a new image size if not already there. * * @param array $image Properties of the image. * @param int $attachment_id Attachment ID. * @param string\|array $size Image size. * @param bool $icon If icon or not. * @return array / public static function maybe_resize_image( $image, $attachment_id, $size, $icon ) { if ( ! apply_filters( 'woocommerce_resize_images', true ) ) { return $image; } // List of sizes we want to resize. Ignore others. if ( ! $image \|\| ! in_array( $size, apply_filters( 'woocommerce_image_sizes_to_resize', array( 'woocommerce_thumbnail', 'woocommerce_gallery_thumbnail', 'woocommerce_single' ) ), true ) ) { return $image; } $target_size = wc_get_image_size( $size ); $image_width = $image[1]; $image_height = $image[2]; $ratio_match = false; $target_uncropped = '' === $target_size['width'] \|\| '' === $target_size['height'] \|\| ! $target_size['crop']; // If '' is passed to either size, we test ratios against the original file. It's uncropped. if ( $target_uncropped ) { $full_size = self::get_full_size_image_dimensions( $attachment_id ); if ( ! $full_size \|\| ! $full_size['width'] \|\| ! $full_size['height'] ) { return $image; } $ratio_match = wp_image_matches_ratio( $image_width, $image_height, $full_size['width'], $full_size['height'] ); } else { $ratio_match = wp_image_matches_ratio( $image_width, $image_height, $target_size['width'], $target_size['height'] ); } if ( ! $ratio_match ) { $full_size = self::get_full_size_image_dimensions( $attachment_id ); if ( ! $full_size ) { return $image; } // Check if the actual image has a larger dimension than the requested image size. Smaller images are not zoom-cropped. if ( $image_width === $target_size['width'] && $full_size['height'] < $target_size['height'] ) { return $image; } if ( $image_height === $target_size['height'] && $full_size['width'] < $target_size['width'] ) { return $image; } // If the full size image is smaller both ways, don't scale it up. if ( $full_size['height'] < $target_size['height'] && $full_size['width'] < $target_size['width'] ) { return $image; } return self::resize_and_return_image( $attachment_id, $image, $size, $icon ); } return $image; } /* * Get full size image dimensions. * * @param int $attachment_id Attachment ID of image. * @return array Width and height. Empty array if the dimensions cannot be found. / private static function get_full_size_image_dimensions( $attachment_id ) { $imagedata = wp_get_attachment_metadata( $attachment_id ); if ( ! is_array( $imagedata ) ) { return array(); } if ( ! isset( $imagedata['file'] ) && isset( $imagedata['sizes']['full'] ) ) { $imagedata['height'] = $imagedata['sizes']['full']['height']; $imagedata['width'] = $imagedata['sizes']['full']['width']; } // The result of the earlier wp_get_attachment_metadata call is filterable, so we may not have height or // width data at this point. if ( ! isset( $imagedata['height'] ) \|\| ! isset( $imagedata['width'] ) ) { return array(); } return array( 'width' => $imagedata['width'], 'height' => $imagedata['height'], ); } /* * Ensure we are dealing with the correct image attachment * * @param int\|WP_Post $attachment Attachment object or ID. * @return boolean / public static function is_regeneratable( $attachment ) { if ( 'site-icon' === get_post_meta( is_object( $attachment ) ? $attachment->ID : $attachment, '_wp_attachment_context', true ) ) { return false; } if ( wp_attachment_is_image( $attachment ) ) { return true; } return false; } /* * Only regenerate images for the requested size. * * @param array $sizes Array of image sizes. * @return array / public static function adjust_intermediate_image_sizes( $sizes ) { return array( self::$regenerate_size ); } /* * Generate the thumbnail filename and dimensions for a given file. * * @param string $fullsizepath Path to full size image. * @param int $thumbnail_width The width of the thumbnail. * @param int $thumbnail_height The height of the thumbnail. * @param bool $crop Whether to crop or not. * @return array\|false An array of the filename, thumbnail width, and thumbnail height, or false on failure to resize such as the thumbnail being larger than the fullsize image. / private static function get_image( $fullsizepath, $thumbnail_width, $thumbnail_height, $crop ) { list( $fullsize_width, $fullsize_height ) = getimagesize( $fullsizepath ); $dimensions = image_resize_dimensions( $fullsize_width, $fullsize_height, $thumbnail_width, $thumbnail_height, $crop ); $editor = wp_get_image_editor( $fullsizepath ); if ( is_wp_error( $editor ) ) { return false; } if ( ! $dimensions \|\| ! is_array( $dimensions ) ) { return false; } list( , , , , $dst_w, $dst_h ) = $dimensions; $suffix = "{$dst_w}x{$dst_h}"; $file_ext = strtolower( pathinfo( $fullsizepath, PATHINFO_EXTENSION ) ); return array( 'filename' => $editor->generate_filename( $suffix, null, $file_ext ), 'width' => $dst_w, 'height' => $dst_h, ); } /* * Regenerate the image according to the required size * * @param int $attachment_id Attachment ID. * @param array $image Original Image. * @param string $size Size to return for new URL. * @param bool $icon If icon or not. * @return string / private static function resize_and_return_image( $attachment_id, $image, $size, $icon ) { if ( ! self::is_regeneratable( $attachment_id ) ) { return $image; } $fullsizepath = get_attached_file( $attachment_id ); if ( false === $fullsizepath \|\| is_wp_error( $fullsizepath ) \|\| ! file_exists( $fullsizepath ) ) { return $image; } if ( ! function_exists( 'wp_crop_image' ) ) { include ABSPATH . 'wp-admin/includes/image.php'; } self::$regenerate_size = is_customize_preview() ? $size . '_preview' : $size; if ( is_customize_preview() ) { $image_size = wc_get_image_size( $size ); // Make sure registered image size matches the size we're requesting. add_image_size( self::$regenerate_size, absint( $image_size['width'] ), absint( $image_size['height'] ), $image_size['crop'] ); $thumbnail = self::get_image( $fullsizepath, absint( $image_size['width'] ), absint( $image_size['height'] ), $image_size['crop'] ); // If the file is already there perhaps just load it if we're using the customizer. No need to store in meta data. if ( $thumbnail && file_exists( $thumbnail['filename'] ) ) { $wp_uploads = wp_upload_dir( null, false ); $wp_uploads_dir = $wp_uploads['basedir']; $wp_uploads_url = $wp_uploads['baseurl']; return array( 0 => str_replace( $wp_uploads_dir, $wp_uploads_url, $thumbnail['filename'] ), 1 => $thumbnail['width'], 2 => $thumbnail['height'], ); } } $metadata = wp_get_attachment_metadata( $attachment_id ); // Fix for images with no metadata. if ( ! is_array( $metadata ) ) { $metadata = array(); } // We only want to regen a specific image size. add_filter( 'intermediate_image_sizes', array( __CLASS__, 'adjust_intermediate_image_sizes' ) ); // This function will generate the new image sizes. $new_metadata = wp_generate_attachment_metadata( $attachment_id, $fullsizepath ); // Remove custom filter. remove_filter( 'intermediate_image_sizes', array( __CLASS__, 'adjust_intermediate_image_sizes' ) ); // If something went wrong lets just return the original image. if ( is_wp_error( $new_metadata ) \|\| empty( $new_metadata ) ) { return $image; } if ( isset( $new_metadata['sizes'][ self::$regenerate_size ] ) ) { $metadata['sizes'][ self::$regenerate_size ] = $new_metadata['sizes'][ self::$regenerate_size ]; wp_update_attachment_metadata( $attachment_id, $metadata ); } // Now we've done our regen, attempt to return the new size. $new_image = self::unfiltered_image_downsize( $attachment_id, self::$regenerate_size ); return $new_image ? $new_image : $image; } /* * Image downsize, without this classes filtering on the results. * * @param int $attachment_id Attachment ID. * @param string $size Size to downsize to. * @return string New image URL. / private static function unfiltered_image_downsize( $attachment_id, $size ) { remove_action( 'image_get_intermediate_size', array( __CLASS__, 'filter_image_get_intermediate_size' ), 10, 3 ); $return = image_downsize( $attachment_id, $size ); add_action( 'image_get_intermediate_size', array( __CLASS__, 'filter_image_get_intermediate_size' ), 10, 3 ); return $return; } /* * Get list of images and queue them for regeneration * * @return void */ public static function queue_image_regeneration() { global $wpdb; // First lets cancel existing running queue to avoid running it more than once. self::$background_process->kill_process(); // Now lets find all product image attachments IDs and pop them onto the queue. $images = $wpdb->get_results( // @codingStandardsIgnoreLine "SELECT ID FROM $wpdb->posts WHERE post_type = 'attachment' AND post_mime_type LIKE 'image/%' ORDER BY ID DESC" ); foreach ( $images as $image ) { self::$background_process->push_to_queue( array( 'attachment_id' => $image->ID, ) ); } // Lets dispatch the queue to start processing. self::$background_process->save()->dispatch(); } } add_action( 'init', array( 'WC_Regenerate_Images', 'init' ) ); Back

Edit File : class-wc-regenerate-images.php | Size : 15.44 KB

<?php
/**
 * Regenerate Images Functionality
 *
 * All functionality pertaining to regenerating product images in realtime.
 *
 * @package WooCommerce\Classes
 * @version 3.5.0
 * @since   3.3.0
 */

defined( 'ABSPATH' ) || exit;

/**
 * Regenerate Images Class
 */
class WC_Regenerate_Images {

/**
	 * Background process to regenerate all images
	 *
	 * @var WC_Regenerate_Images_Request
	 */
	protected static $background_process;

/**
	 * Stores size being generated on the fly.
	 *
	 * @var string
	 */
	protected static $regenerate_size;

/**
	 * Init function
	 */
	public static function init() {
		add_action( 'image_get_intermediate_size', array( __CLASS__, 'filter_image_get_intermediate_size' ), 10, 3 );
		add_filter( 'wp_generate_attachment_metadata', array( __CLASS__, 'add_uncropped_metadata' ) );
		add_filter( 'wp_get_attachment_image_src', array( __CLASS__, 'maybe_resize_image' ), 10, 4 );

// Not required when Jetpack Photon is in use.
		if ( method_exists( 'Jetpack', 'is_module_active' ) && Jetpack::is_module_active( 'photon' ) ) {
			return;
		}

if ( apply_filters( 'woocommerce_background_image_regeneration', true ) ) {
			include_once WC_ABSPATH . 'includes/class-wc-regenerate-images-request.php';

self::$background_process = new WC_Regenerate_Images_Request();

add_action( 'admin_init', array( __CLASS__, 'regenerating_notice' ) );
			add_action( 'woocommerce_hide_regenerating_thumbnails_notice', array( __CLASS__, 'dismiss_regenerating_notice' ) );

// Regenerate thumbnails in the background after settings changes. Not ran on multisite to avoid multiple simultaneous jobs.
			if ( ! is_multisite() ) {
				add_action( 'customize_save_after', array( __CLASS__, 'maybe_regenerate_images' ) );
				add_action( 'after_switch_theme', array( __CLASS__, 'maybe_regenerate_images' ) );
			}
		}
	}

/**
	 * If an intermediate size meta differs from the actual image size (settings were changed?) return false so the wrong size is not used.
	 *
	 * @param array  $data Size data.
	 * @param int    $attachment_id Attachment ID.
	 * @param string $size Size name.
	 * @return array
	 */
	public static function filter_image_get_intermediate_size( $data, $attachment_id, $size ) {
		if ( ! is_string( $size ) || ! in_array( $size, apply_filters( 'woocommerce_image_sizes_to_resize', array( 'woocommerce_thumbnail', 'woocommerce_gallery_thumbnail', 'woocommerce_single' ) ), true ) ) {
			return $data;
		}

// If we don't have sizes, we cannot proceed.
		if ( ! isset( $data['width'], $data['height'] ) ) {
			return $data;
		}

// See if the image size has changed from our settings.
		if ( ! self::image_size_matches_settings( $data, $size ) ) {
			// If Photon is running we can just return false and let Jetpack handle regeneration.
			if ( method_exists( 'Jetpack', 'is_module_active' ) && Jetpack::is_module_active( 'photon' ) ) {
				return false;
			} else {
				// If we get here, Jetpack is not running and we don't have the correct image sized stored. Try to return closest match.
				$size_data = wc_get_image_size( $size );
				return image_get_intermediate_size( $attachment_id, array( absint( $size_data['width'] ), absint( $size_data['height'] ) ) );
			}
		}
		return $data;
	}

/**
	 * We need to track if uncropped was on or off when generating the images.
	 *
	 * @param array $meta_data Array of meta data.
	 * @return array
	 */
	public static function add_uncropped_metadata( $meta_data ) {
		$size_data = wc_get_image_size( 'woocommerce_thumbnail' );
		if ( isset( $meta_data['sizes'], $meta_data['sizes']['woocommerce_thumbnail'] ) ) {
			$meta_data['sizes']['woocommerce_thumbnail']['uncropped'] = empty( $size_data['height'] );
		}
		return $meta_data;
	}

/**
	 * See if an image's dimensions match actual settings.
	 *
	 * @param array  $image Image dimensions array.
	 * @param string $size Named size.
	 * @return bool True if they match. False if they do not (may trigger regen).
	 */
	protected static function image_size_matches_settings( $image, $size ) {
		$target_size = wc_get_image_size( $size );
		$uncropped   = '' === $target_size['width'] || '' === $target_size['height'];

if ( ! $uncropped ) {
			$ratio_match = wp_image_matches_ratio( $image['width'], $image['height'], $target_size['width'], $target_size['height'] );

// Size is invalid if the widths or crop setting don't match.
			if ( $ratio_match && $target_size['width'] !== $image['width'] ) {
				return false;
			}

// Size is invalid if the heights don't match.
			if ( $ratio_match && $target_size['height'] && $target_size['height'] !== $image['height'] ) {
				return false;
			}
		}

// If cropping mode has changed, regenerate the image.
		if ( $uncropped && empty( $image['uncropped'] ) ) {
			return false;
		}

return true;
	}

/**
	 * Show notice when job is running in background.
	 */
	public static function regenerating_notice() {
		if ( ! self::$background_process->is_running() ) {
			WC_Admin_Notices::add_notice( 'regenerating_thumbnails' );
		} else {
			WC_Admin_Notices::remove_notice( 'regenerating_thumbnails' );
		}
	}

/**
	 * Dismiss notice and cancel jobs.
	 */
	public static function dismiss_regenerating_notice() {
		if ( self::$background_process ) {
			self::$background_process->kill_process();

$log = wc_get_logger();
			$log->info(
				__( 'Cancelled product image regeneration job.', 'woocommerce' ),
				array(
					'source' => 'wc-image-regeneration',
				)
			);
		}
		WC_Admin_Notices::remove_notice( 'regenerating_thumbnails' );
	}

/**
	 * Regenerate images if the settings have changed since last re-generation.
	 *
	 * @return void
	 */
	public static function maybe_regenerate_images() {
		$size_hash = md5(
			wp_json_encode(
				array(
					wc_get_image_size( 'thumbnail' ),
					wc_get_image_size( 'single' ),
					wc_get_image_size( 'gallery_thumbnail' ),
				)
			)
		);

if ( update_option( 'woocommerce_maybe_regenerate_images_hash', $size_hash ) ) {
			// Size settings have changed. Trigger regen.
			self::queue_image_regeneration();
		}
	}

/**
	 * Check if we should maybe generate a new image size if not already there.
	 *
	 * @param array        $image Properties of the image.
	 * @param int          $attachment_id Attachment ID.
	 * @param string|array $size Image size.
	 * @param bool         $icon If icon or not.
	 * @return array
	 */
	public static function maybe_resize_image( $image, $attachment_id, $size, $icon ) {
		if ( ! apply_filters( 'woocommerce_resize_images', true ) ) {
			return $image;
		}

// List of sizes we want to resize. Ignore others.
		if ( ! $image || ! in_array( $size, apply_filters( 'woocommerce_image_sizes_to_resize', array( 'woocommerce_thumbnail', 'woocommerce_gallery_thumbnail', 'woocommerce_single' ) ), true ) ) {
			return $image;
		}

$target_size      = wc_get_image_size( $size );
		$image_width      = $image[1];
		$image_height     = $image[2];
		$ratio_match      = false;
		$target_uncropped = '' === $target_size['width'] || '' === $target_size['height'] || ! $target_size['crop'];

// If '' is passed to either size, we test ratios against the original file. It's uncropped.
		if ( $target_uncropped ) {
			$full_size = self::get_full_size_image_dimensions( $attachment_id );

if ( ! $full_size || ! $full_size['width'] || ! $full_size['height'] ) {
				return $image;
			}

$ratio_match = wp_image_matches_ratio( $image_width, $image_height, $full_size['width'], $full_size['height'] );
		} else {
			$ratio_match = wp_image_matches_ratio( $image_width, $image_height, $target_size['width'], $target_size['height'] );
		}

if ( ! $ratio_match ) {
			$full_size = self::get_full_size_image_dimensions( $attachment_id );

if ( ! $full_size ) {
				return $image;
			}

// Check if the actual image has a larger dimension than the requested image size. Smaller images are not zoom-cropped.
			if ( $image_width === $target_size['width'] && $full_size['height'] < $target_size['height'] ) {
				return $image;
			}

if ( $image_height === $target_size['height'] && $full_size['width'] < $target_size['width'] ) {
				return $image;
			}

// If the full size image is smaller both ways, don't scale it up.
			if ( $full_size['height'] < $target_size['height'] && $full_size['width'] < $target_size['width'] ) {
				return $image;
			}

return self::resize_and_return_image( $attachment_id, $image, $size, $icon );
		}

return $image;
	}

/**
	 * Get full size image dimensions.
	 *
	 * @param int $attachment_id Attachment ID of image.
	 * @return array Width and height. Empty array if the dimensions cannot be found.
	 */
	private static function get_full_size_image_dimensions( $attachment_id ) {
		$imagedata = wp_get_attachment_metadata( $attachment_id );

if ( ! is_array( $imagedata ) ) {
			return array();
		}

if ( ! isset( $imagedata['file'] ) && isset( $imagedata['sizes']['full'] ) ) {
			$imagedata['height'] = $imagedata['sizes']['full']['height'];
			$imagedata['width']  = $imagedata['sizes']['full']['width'];
		}

// The result of the earlier wp_get_attachment_metadata call is filterable, so we may not have height or
		// width data at this point.
		if ( ! isset( $imagedata['height'] ) || ! isset( $imagedata['width'] ) ) {
			return array();
		}

return array(
			'width'  => $imagedata['width'],
			'height' => $imagedata['height'],
		);
	}

/**
	 * Ensure we are dealing with the correct image attachment
	 *
	 * @param int|WP_Post $attachment Attachment object or ID.
	 * @return boolean
	 */
	public static function is_regeneratable( $attachment ) {
		if ( 'site-icon' === get_post_meta( is_object( $attachment ) ? $attachment->ID : $attachment, '_wp_attachment_context', true ) ) {
			return false;
		}

if ( wp_attachment_is_image( $attachment ) ) {
			return true;
		}

return false;
	}

/**
	 * Only regenerate images for the requested size.
	 *
	 * @param array $sizes Array of image sizes.
	 * @return array
	 */
	public static function adjust_intermediate_image_sizes( $sizes ) {
		return array( self::$regenerate_size );
	}

/**
	 * Generate the thumbnail filename and dimensions for a given file.
	 *
	 * @param string $fullsizepath Path to full size image.
	 * @param int    $thumbnail_width  The width of the thumbnail.
	 * @param int    $thumbnail_height The height of the thumbnail.
	 * @param bool   $crop             Whether to crop or not.
	 * @return array|false An array of the filename, thumbnail width, and thumbnail height, or false on failure to resize such as the thumbnail being larger than the fullsize image.
	 */
	private static function get_image( $fullsizepath, $thumbnail_width, $thumbnail_height, $crop ) {
		list( $fullsize_width, $fullsize_height ) = getimagesize( $fullsizepath );

$dimensions = image_resize_dimensions( $fullsize_width, $fullsize_height, $thumbnail_width, $thumbnail_height, $crop );
		$editor     = wp_get_image_editor( $fullsizepath );

if ( is_wp_error( $editor ) ) {
			return false;
		}

if ( ! $dimensions || ! is_array( $dimensions ) ) {
			return false;
		}

list( , , , , $dst_w, $dst_h ) = $dimensions;
		$suffix                        = "{$dst_w}x{$dst_h}";
		$file_ext                      = strtolower( pathinfo( $fullsizepath, PATHINFO_EXTENSION ) );

return array(
			'filename' => $editor->generate_filename( $suffix, null, $file_ext ),
			'width'    => $dst_w,
			'height'   => $dst_h,
		);
	}

/**
	 * Regenerate the image according to the required size
	 *
	 * @param int    $attachment_id Attachment ID.
	 * @param array  $image Original Image.
	 * @param string $size Size to return for new URL.
	 * @param bool   $icon If icon or not.
	 * @return string
	 */
	private static function resize_and_return_image( $attachment_id, $image, $size, $icon ) {
		if ( ! self::is_regeneratable( $attachment_id ) ) {
			return $image;
		}

$fullsizepath = get_attached_file( $attachment_id );

if ( false === $fullsizepath || is_wp_error( $fullsizepath ) || ! file_exists( $fullsizepath ) ) {
			return $image;
		}

if ( ! function_exists( 'wp_crop_image' ) ) {
			include ABSPATH . 'wp-admin/includes/image.php';
		}

self::$regenerate_size = is_customize_preview() ? $size . '_preview' : $size;

if ( is_customize_preview() ) {
			$image_size = wc_get_image_size( $size );

// Make sure registered image size matches the size we're requesting.
			add_image_size( self::$regenerate_size, absint( $image_size['width'] ), absint( $image_size['height'] ), $image_size['crop'] );

$thumbnail = self::get_image( $fullsizepath, absint( $image_size['width'] ), absint( $image_size['height'] ), $image_size['crop'] );

// If the file is already there perhaps just load it if we're using the customizer. No need to store in meta data.
			if ( $thumbnail && file_exists( $thumbnail['filename'] ) ) {
				$wp_uploads     = wp_upload_dir( null, false );
				$wp_uploads_dir = $wp_uploads['basedir'];
				$wp_uploads_url = $wp_uploads['baseurl'];

return array(
					0 => str_replace( $wp_uploads_dir, $wp_uploads_url, $thumbnail['filename'] ),
					1 => $thumbnail['width'],
					2 => $thumbnail['height'],
				);
			}
		}

$metadata = wp_get_attachment_metadata( $attachment_id );

// Fix for images with no metadata.
		if ( ! is_array( $metadata ) ) {
			$metadata = array();
		}

// We only want to regen a specific image size.
		add_filter( 'intermediate_image_sizes', array( __CLASS__, 'adjust_intermediate_image_sizes' ) );

// This function will generate the new image sizes.
		$new_metadata = wp_generate_attachment_metadata( $attachment_id, $fullsizepath );

// Remove custom filter.
		remove_filter( 'intermediate_image_sizes', array( __CLASS__, 'adjust_intermediate_image_sizes' ) );

// If something went wrong lets just return the original image.
		if ( is_wp_error( $new_metadata ) || empty( $new_metadata ) ) {
			return $image;
		}

if ( isset( $new_metadata['sizes'][ self::$regenerate_size ] ) ) {
			$metadata['sizes'][ self::$regenerate_size ] = $new_metadata['sizes'][ self::$regenerate_size ];
			wp_update_attachment_metadata( $attachment_id, $metadata );
		}

// Now we've done our regen, attempt to return the new size.
		$new_image = self::unfiltered_image_downsize( $attachment_id, self::$regenerate_size );

return $new_image ? $new_image : $image;
	}

/**
	 * Image downsize, without this classes filtering on the results.
	 *
	 * @param int    $attachment_id Attachment ID.
	 * @param string $size Size to downsize to.
	 * @return string New image URL.
	 */
	private static function unfiltered_image_downsize( $attachment_id, $size ) {
		remove_action( 'image_get_intermediate_size', array( __CLASS__, 'filter_image_get_intermediate_size' ), 10, 3 );

$return = image_downsize( $attachment_id, $size );

add_action( 'image_get_intermediate_size', array( __CLASS__, 'filter_image_get_intermediate_size' ), 10, 3 );

return $return;
	}

/**
	 * Get list of images and queue them for regeneration
	 *
	 * @return void
	 */
	public static function queue_image_regeneration() {
		global $wpdb;
		// First lets cancel existing running queue to avoid running it more than once.
		self::$background_process->kill_process();

// Now lets find all product image attachments IDs and pop them onto the queue.
		$images = $wpdb->get_results( // @codingStandardsIgnoreLine
			"SELECT ID
			FROM $wpdb->posts
			WHERE post_type = 'attachment'
			AND post_mime_type LIKE 'image/%'
			ORDER BY ID DESC"
		);
		foreach ( $images as $image ) {
			self::$background_process->push_to_queue(
				array(
					'attachment_id' => $image->ID,
				)
			);
		}

// Lets dispatch the queue to start processing.
		self::$background_process->save()->dispatch();
	}
}

add_action( 'init', array( 'WC_Regenerate_Images', 'init' ) );

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