Merge pull request #93363 from kitbdev/pass-propagate

Clarify Mouse Filter Pass in the Inspector

doc/classes/Control.xml

@@ -1333,13 +1333,14 @@
 			Tells the parent [Container] to align the node with its end, either the bottom or the right edge. It is mutually exclusive with [constant SIZE_FILL] and other shrink size flags, but can be used with [constant SIZE_EXPAND] in some containers. Use with [member size_flags_horizontal] and [member size_flags_vertical].
 		</constant>
 		<constant name="MOUSE_FILTER_STOP" value="0" enum="MouseFilter">
-			The control will receive mouse movement input events and mouse button input events if clicked on through [method _gui_input]. And the control will receive the [signal mouse_entered] and [signal mouse_exited] signals. These events are automatically marked as handled, and they will not propagate further to other controls. This also results in blocking signals in other controls.
+			The control will receive mouse movement input events and mouse button input events if clicked on through [method _gui_input]. The control will also receive the [signal mouse_entered] and [signal mouse_exited] signals. These events are automatically marked as handled, and they will not propagate further to other controls. This also results in blocking signals in other controls.
 		</constant>
 		<constant name="MOUSE_FILTER_PASS" value="1" enum="MouseFilter">
-			The control will receive mouse movement input events and mouse button input events if clicked on through [method _gui_input]. And the control will receive the [signal mouse_entered] and [signal mouse_exited] signals. If this control does not handle the event, the parent control (if any) will be considered, and so on until there is no more parent control to potentially handle it. This also allows signals to fire in other controls. If no control handled it, the event will be passed to [method Node._shortcut_input] for further processing.
+			The control will receive mouse movement input events and mouse button input events if clicked on through [method _gui_input]. The control will also receive the [signal mouse_entered] and [signal mouse_exited] signals.
+			If this control does not handle the event, the event will propagate up to its parent control if it has one. The event is bubbled up the node hierarchy until it reaches a non-[CanvasItem], a control with [constant MOUSE_FILTER_STOP], or a [CanvasItem] with [member CanvasItem.top_level] enabled. This will allow signals to fire in all controls it reaches. If no control handled it, the event will be passed to [method Node._shortcut_input] for further processing.
 		</constant>
 		<constant name="MOUSE_FILTER_IGNORE" value="2" enum="MouseFilter">
-			The control will not receive mouse movement input events and mouse button input events if clicked on through [method _gui_input]. The control will also not receive the [signal mouse_entered] nor [signal mouse_exited] signals. This will not block other controls from receiving these events or firing the signals. Ignored events will not be handled automatically.
+			The control will not receive any mouse movement input events nor mouse button input events through [method _gui_input]. The control will also not receive the [signal mouse_entered] nor [signal mouse_exited] signals. This will not block other controls from receiving these events or firing the signals. Ignored events will not be handled automatically. If a child has [constant MOUSE_FILTER_PASS] and an event was passed to this control, the event will further propagate up to the control's parent.
 			[b]Note:[/b] If the control has received [signal mouse_entered] but not [signal mouse_exited], changing the [member mouse_filter] to [constant MOUSE_FILTER_IGNORE] will cause [signal mouse_exited] to be emitted.
 		</constant>
 		<constant name="GROW_DIRECTION_BEGIN" value="0" enum="GrowDirection">

scene/gui/control.cpp

@@ -3606,7 +3606,7 @@ void Control::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "focus_mode", PROPERTY_HINT_ENUM, "None,Click,All"), "set_focus_mode", "get_focus_mode");
 
 	ADD_GROUP("Mouse", "mouse_");
-	ADD_PROPERTY(PropertyInfo(Variant::INT, "mouse_filter", PROPERTY_HINT_ENUM, "Stop,Pass,Ignore"), "set_mouse_filter", "get_mouse_filter");
+	ADD_PROPERTY(PropertyInfo(Variant::INT, "mouse_filter", PROPERTY_HINT_ENUM, "Stop,Pass (Propagate Up),Ignore"), "set_mouse_filter", "get_mouse_filter");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "mouse_force_pass_scroll_events"), "set_force_pass_scroll_events", "is_force_pass_scroll_events");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "mouse_default_cursor_shape", PROPERTY_HINT_ENUM, "Arrow,I-Beam,Pointing Hand,Cross,Wait,Busy,Drag,Can Drop,Forbidden,Vertical Resize,Horizontal Resize,Secondary Diagonal Resize,Main Diagonal Resize,Move,Vertical Split,Horizontal Split,Help"), "set_default_cursor_shape", "get_default_cursor_shape");