// Block until any event on any window is received.
// No event is returned here!
SVEvent* ScrollView::AwaitEventAnyWindow() {
// Initialize the waiting semaphore.
SVSemaphore* sem = new SVSemaphore();
std::pair<ScrollView*, SVEventType> ea((ScrollView*)nullptr, SVET_ANY);
waiting_for_events_mu->Lock();
waiting_for_events[ea] = std::pair<SVSemaphore*, SVEvent*> (sem, (SVEvent*)nullptr);
waiting_for_events_mu->Unlock();
// Wait on it.
stream_->Flush();
sem->Wait();
// Process the event we got woken up for (its in waiting_for_events pair).
waiting_for_events_mu->Lock();
SVEvent* ret = waiting_for_events[ea].second;
waiting_for_events.erase(ea);
waiting_for_events_mu->Unlock();
return ret;
}
// Block until an event of the given type is received.
// Note: The calling function is responsible for deleting the returned
// SVEvent afterwards!
SVEvent* ScrollView::AwaitEvent(SVEventType type) {
// Initialize the waiting semaphore.
SVSemaphore* sem = new SVSemaphore();
std::pair<ScrollView*, SVEventType> ea(this, type);
mutex_waiting->Lock();
waiting_for_events[ea] = std::pair<SVSemaphore*, SVEvent*> (sem, NULL);
mutex_waiting->Unlock();
// Wait on it, but first flush.
stream_->Flush();
sem->Wait();
// Process the event we got woken up for (its in waiting_for_events pair).
mutex_waiting->Lock();
SVEvent* ret = waiting_for_events[ea].second;
waiting_for_events.erase(ea);
mutex_waiting->Unlock();
return ret;
}
