_onObjectScaled(props) {
    /**
     * The event when scale factor is changed
     * @event ImageEditor#objectScaled
     * @param {ObjectProps} props - object properties
     * @example
     * imageEditor.on('objectScaled', function(props) {
     *     console.log(props);
     *     console.log(props.type);
     * });
     */
    this.fire(events.OBJECT_SCALED, props);
  }
'objectScaled' event handler
@param {ObjectProps} props - object properties
@private