Ejemplo n.º 1
0
void
ScrollbarActivity::ActivityStopped()
{
  NS_ASSERTION(IsActivityOngoing(), "activity stopped while none was going on");
  NS_ASSERTION(mIsActive, "need to be active during activity");
  NS_ASSERTION(!mIsFading, "must not be fading during ongoing activity");

  mNestedActivityCounter--;

  if (!IsActivityOngoing()) {
    StartFadeBeginTimer();

    NS_ASSERTION(mIsActive, "need to be active right after activity");
    NS_ASSERTION(!mIsFading, "must not be fading right after activity");
  }
}
Ejemplo n.º 2
0
void
ScrollbarActivity::ActivityStopped()
{
  if (!IsActivityOngoing()) {
    // This can happen if there was a frame reconstruction while the activity
    // was ongoing. In this case we just do nothing. We should probably handle
    // this case better.
    return;
  }
  NS_ASSERTION(mIsActive, "need to be active during activity");
  NS_ASSERTION(!mIsFading, "must not be fading during ongoing activity");

  mNestedActivityCounter--;

  if (!IsActivityOngoing()) {
    StartFadeBeginTimer();

    NS_ASSERTION(mIsActive, "need to be active right after activity");
    NS_ASSERTION(!mIsFading, "must not be fading right after activity");
  }
}
Ejemplo n.º 3
0
void
ScrollbarActivity::WillRefresh(TimeStamp aTime)
{
  NS_ASSERTION(mIsActive, "should only fade while scrollbars are visible");
  NS_ASSERTION(!IsActivityOngoing(), "why weren't we unregistered from the refresh driver when scrollbar activity started?");
  NS_ASSERTION(mIsFading, "should only animate fading during fade");

  if (!UpdateOpacity(aTime)) {
    return;
  }

  if (!IsStillFading(aTime)) {
    EndFade();
  }
}
Ejemplo n.º 4
0
void
ScrollbarActivity::BeginFade()
{
  NS_ASSERTION(mIsActive, "can't begin fade when we're already inactive");
  NS_ASSERTION(!IsActivityOngoing(), "why wasn't the fade begin timer cancelled when scrollbar activity started?");
  NS_ASSERTION(!mIsFading, "shouldn't be fading just yet");

  CancelFadeBeginTimer();
  mFadeBeginTime = TimeStamp::Now();
  if (!SetIsFading(true)) {
    return;
  }
  RegisterWithRefreshDriver();

  NS_ASSERTION(mIsActive, "only fade while scrollbars are visible");
  NS_ASSERTION(mIsFading, "should be fading now");
}
Ejemplo n.º 5
0
void
ScrollbarActivity::EndFade()
{
  NS_ASSERTION(mIsActive, "still need to be active at this point");
  NS_ASSERTION(!IsActivityOngoing(), "why wasn't the fade end timer cancelled when scrollbar activity started?");

  if (!SetIsFading(false)) {
    return;
  }
  SetIsActive(false);
  UnregisterFromRefreshDriver();
  StopListeningForScrollbarEvents();
  if (!mDisplayOnMouseMove) {
    StopListeningForScrollAreaEvents();
  }

  NS_ASSERTION(!mIsActive, "should have gone inactive after fade end");
  NS_ASSERTION(!mIsFading, "shouldn't be fading anymore");
}