C++ EventManager::shouldQuit方法代码示例

bool Engine::shouldQuit() {
	Common::EventManager *eventMan = g_system->getEventManager();
	return (eventMan->shouldQuit() || eventMan->shouldRTL());
}

void GuiManager::runLoop() {
	Dialog * const activeDialog = getTopDialog();
	bool didSaveState = false;

	if (activeDialog == 0)
		return;

#ifdef ENABLE_EVENTRECORDER
	// Suspend recording while GUI is shown
	g_eventRec.suspendRecording();
#endif

	if (!_stateIsSaved) {
		saveState();
		_theme->enable();
		didSaveState = true;

		_useStdCursor = !_theme->ownCursor();
		if (_useStdCursor)
			setupCursor();

//		_theme->refresh();

		_redrawStatus = kRedrawFull;
		redraw();
	}

	Common::EventManager *eventMan = _system->getEventManager();
	uint32 lastRedraw = 0;
	const uint32 waitTime = 1000 / 60;

	while (!_dialogStack.empty() && activeDialog == getTopDialog() && !eventMan->shouldQuit()) {
		redraw();

		// Don't "tickle" the dialog until the theme has had a chance
		// to re-allocate buffers in case of a scaler change.

		activeDialog->handleTickle();

		if (_useStdCursor)
			animateCursor();
//		_theme->updateScreen();
//		_system->updateScreen();

		if (lastRedraw + waitTime < _system->getMillis(true)) {
			lastRedraw = _system->getMillis(true);
			_theme->updateScreen();
			_system->updateScreen();
		}

		Common::Event event;

		while (eventMan->pollEvent(event)) {
			// We will need to check whether the screen changed while polling
			// for an event here. While we do send EVENT_SCREEN_CHANGED
			// whenever this happens we still cannot be sure that we get such
			// an event immediately. For example, we might have an mouse move
			// event queued before an screen changed event. In some rare cases
			// this would make the GUI redraw (with the code a few lines
			// below) when it is not yet updated for new overlay dimensions.
			// As a result ScummVM would crash because it tries to copy data
			// outside the actual overlay screen.
			if (event.type != Common::EVENT_SCREEN_CHANGED) {
				checkScreenChange();
			}

			// The top dialog can change during the event loop. In that case, flush all the
			// dialog-related events since they were probably generated while the old dialog
			// was still visible, and therefore not intended for the new one.
			//
			// This hopefully fixes strange behavior/crashes with pop-up widgets. (Most easily
			// triggered in 3x mode or when running ScummVM under Valgrind.)
			if (activeDialog != getTopDialog() && event.type != Common::EVENT_SCREEN_CHANGED) {
				processEvent(event, getTopDialog());
				continue;		
			}
			
			processEvent(event, activeDialog);
			

			if (lastRedraw + waitTime < _system->getMillis(true)) {
				lastRedraw = _system->getMillis(true);
				_theme->updateScreen();
				_system->updateScreen();
			}
		}

		if (_lastMousePosition.time + kTooltipDelay < _system->getMillis(true)) {
			Widget *wdg = activeDialog->findWidget(_lastMousePosition.x, _lastMousePosition.y);
			if (wdg && wdg->hasTooltip() && !(wdg->getFlags() & WIDGET_PRESSED)) {
				Tooltip *tooltip = new Tooltip();
				tooltip->setup(activeDialog, wdg, _lastMousePosition.x, _lastMousePosition.y);
				tooltip->runModal();
				delete tooltip;
			}
		}

		// Delay for a moment
		_system->delayMillis(10);
	}
//.........这里部分代码省略.........