groupDrawables method

void groupDrawables({
  1. bool newAction = true,
})

Groups all drawables in the controller into one drawable.

This is used when an erase drawable is added, to prevent modifications to previous drawables.

Calling this will notify all the listeners of this PainterController that they need to update (it calls notifyListeners). For this reason, this method should only be called between frames, e.g. in response to user actions, not during the build, layout, or paint phases.

Implementation

void groupDrawables({bool newAction = true}) {
  final action = MergeDrawablesAction();
  action.perform(this);
  _addAction(action, newAction);
}