wp-admin/includes/image-edit.php:640Performs group of changes on Editor specified.
$imageWP_Image_Editor$changesarrayWP_Image_Editor2 hooks fire while image_edit_apply_changes() runs, in this order:
Filters the WP_Image_Editor instance before applying changes to the image.
Filters the GD image resource before applying changes to the image.
function image_edit_apply_changes( $image, $changes ) { if ( is_gd_image( $image ) ) { /* translators: 1: $image, 2: WP_Image_Editor */ _deprecated_argument( __FUNCTION__, '3.5.0', sprintf( __( '%1$s needs to be a %2$s object.' ), '$image', 'WP_Image_Editor' ) ); } if ( ! is_array( $changes ) ) { return $image; } // Expand change operations. foreach ( $changes as $key => $obj ) { if ( isset( $obj->r ) ) { $obj->type = 'rotate'; $obj->angle = $obj->r; unset( $obj->r ); } elseif ( isset( $obj->f ) ) { $obj->type = 'flip'; $obj->axis = $obj->f; unset( $obj->f ); } elseif ( isset( $obj->c ) ) { $obj->type = 'crop'; $obj->sel = $obj->c; unset( $obj->c ); } $changes[ $key ] = $obj; } // Combine operations. if ( count( $changes ) > 1 ) { $filtered = array( $changes[0] ); for ( $i = 0, $j = 1, $c = count( $changes ); $j < $c; $j++ ) { $combined = false; if ( $filtered[ $i ]->type === $changes[ $j ]->type ) { switch ( $filtered[ $i ]->type ) { case 'rotate': $filtered[ $i ]->angle += $changes[ $j ]->angle; $combined = true; break; case 'flip': $filtered[ $i ]->axis ^= $changes[ $j ]->axis; $combined = true; break; } } if ( ! $combined ) { $filtered[ ++$i ] = $changes[ $j ]; } } $changes = $filtered; unset( $filtered ); } // Image resource before applying the changes. if ( $image instanceof WP_Image_Editor ) { /** * Filters the WP_Image_Editor instance before applying changes to the image. * * @since 3.5.0 * * @param WP_Image_Editor $image WP_Image_Editor instance. * @param array $changes Array of change operations. */ $image = apply_filters( 'wp_image_editor_before_change', $image, $changes ); } elseif ( is_gd_image( $image ) ) { /** * Filters the GD image resource before applying changes to the image. * * @since 2.9.0 * @deprecated 3.5.0 Use {@see 'wp_image_editor_before_change'} instead. * * @param resource|GdImage $image GD image resource or GdImage instance. * @param array $changes Array of change operations.Introduced in 2.9.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/image-edit.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.