servers/app/EventDispatcher.cpp

46 	and then forwarded to the actual target of the event, a client window
48 	You cannot set the target of an event directly - the event filters need
50 	The event loop will make sure that every target and interested listener
51 	will get the event - it also delivers mouse moved events to the previous
60 	view(s). This makes it possible to send every event only once, no
180 		// we still need this event
236 	BLocker("event dispatcher"),
266 	ETRACE(("event dispatcher: stream = %p\n", stream));
313 	fThread = spawn_thread(_event_looper, "event loop",
319 		ETRACE(("event stream supports cursor thread!\n"));
356 	\brief Adds the specified listener or updates its event mask and options
359 	It follows the BView semantics in that specifiying an event mask of zero
360 	leaves the event mask untouched and just updates the options.
378 		// we already have this target, update its event mask
754 	BMessage* event;
755 	while (fStream->GetNextEvent(&event)) {
765 		switch (event->what) {
767 				_SendFakeMouseMoved(event);
772 				if (event->FindPoint("where", &where) == B_OK)
776 					event->AddMessage("be:drag_message", &fDragMessage);
790 				// latest mouse moved event in the queue only
793 				else if (fNextLatestMouseMoved != event) {
797 					if (event->FindInt64("when", &eventTime) == B_OK) {
810 				if (event->what != B_MOUSE_MOVED)
811 					printf("mouse up/down event, previous target = %p\n", fPreviousMouseTarget);
820 				if (fMouseFilter->Filter(event, &mouseTarget, &viewToken,
823 					// event is filtered out
824 					if (event->what == B_MOUSE_UP
825 						&& event->FindInt32("buttons") == 0) {
833 				if (event->FindInt32("buttons", &buttons) == B_OK)
840 				event->RemoveName("where");
841 				event->AddPoint("screen_where", fLastCursorPosition);
843 				if (event->what == B_MOUSE_MOVED
848 					addedTokens = _AddTokens(event, fPreviousMouseTarget,
851 						_SetFeedFocus(event);
853 					_SendMessage(fPreviousMouseTarget->Messenger(), event,
862 					addedTokens |= _AddTokens(event, current, B_POINTER_EVENTS,
868 						event->AddInt32("_view_token", viewToken);
871 						_SetFeedFocus(event);
878 					_SendMessage(current->Messenger(), event,
879 						event->what == B_MOUSE_MOVED
891 				ETRACE(("key event, focus = %p\n", fFocus));
894 					&& fKeyboardFilter->Filter(event, &fFocus)
901 				if (fFocus != NULL && _AddTokens(event, fFocus,
904 					// focus in the event - if not, the event is simply not
909 						_SetFeedFocus(event);
916 				//	focus messages that go through the event dispatcher can
918 				if (event->what == B_MOUSE_WHEEL_CHANGED)
924 					_SendMessage(current->Messenger(), event,
931 			// send the event to the additional listeners
934 				_RemoveTokens(event);
935 				_UnsetFeedFocus(event);
940 				event->RemoveName("_view_token");
946 				// We already sent the event to the all focus and last focus
951 				// Don't send the message if there are no tokens for this event
952 				if (!_AddTokens(event, target,
954 						event->what == B_MOUSE_MOVED
958 				if (!_SendMessage(target->Messenger(), event,
959 						event->what == B_MOUSE_MOVED
966 			if (event->what == B_MOUSE_UP && fLastButtons == 0) {
975 		if (fNextLatestMouseMoved == event)
977 		delete event;
1028 	ETRACE(("Start event loop\n"));