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Describe event propagation behavior in more detail

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Martin Green
2018-01-05 20:17:36 +02:00
committed by Martin Green
parent ab2c6cdb2f
commit 44d1132f36
1 changed files with 5 additions and 1 deletions
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learning/features/inputs/inputevent.rst
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@@ -41,7 +41,11 @@ received input, in order:
"input_event" will be emitted (this function is re-implementable by
script by inheriting from it). If the control wants to "consume" the
event, it will call :ref:`Control.accept_event() <class_Control_accept_event>` and the event will
not spread any more.
not spread any more. Events that are not consumed will propagate **up**,
to :ref:`Control <class_Control>`'s ancestors. Use :ref:`Control.mouse_filter <class_Control_mouse_filter>`
property to control whether a :ref:`Control <class_Control>` is notified
of mouse events via :ref:`Control._gui_input() <class_Control__gui_input>`
callback, and whether these events are propagated further.
3. If so far no one consumed the event, the unhandled input callback
will be called if overriden (and not disabled with
:ref:`Node.set_process_unhandled_input() <class_Node_set_process_unhandled_input>`).