void
GeckoTouchDispatcher::DispatchTouchMoveEvents(TimeStamp aVsyncTime)
{
MultiTouchInput touchMove;
{
MutexAutoLock lock(mTouchQueueLock);
if (!mHavePendingTouchMoves) {
return;
}
mHavePendingTouchMoves = false;
int touchCount = mTouchMoveEvents.size();
TimeDuration vsyncTouchDiff = aVsyncTime - mTouchMoveEvents.back().mTimeStamp;
// The delay threshold is a positive pref, but we're testing to see if the
// vsync time is delayed from the touch, so add a negative sign.
bool isDelayedVsyncEvent = vsyncTouchDiff < -mDelayedVsyncThreshold;
bool isOldTouch = vsyncTouchDiff > mOldTouchThreshold;
bool resample = (touchCount > 1) && !isDelayedVsyncEvent && !isOldTouch;
if (!resample) {
touchMove = mTouchMoveEvents.back();
mTouchMoveEvents.clear();
if (!isDelayedVsyncEvent && !isOldTouch) {
mTouchMoveEvents.push_back(touchMove);
}
} else {
ResampleTouchMoves(touchMove, aVsyncTime);
}
}
DispatchTouchEvent(touchMove);
}
void
GeckoTouchDispatcher::DispatchTouchMoveEvents(uint64_t aVsyncTime)
{
MultiTouchInput touchMove;
{
MutexAutoLock lock(mTouchQueueLock);
if (mTouchMoveEvents.empty()) {
return;
}
int touchCount = mTouchMoveEvents.size();
// Both aVsynctime and mLastTouchTime are uint64_t
// Need to store as a signed int.
int64_t vsyncTouchDiff = aVsyncTime - mLastTouchTime;
bool resample = (touchCount > 1) &&
(vsyncTouchDiff > mMinResampleTime);
if (!resample) {
touchMove = mTouchMoveEvents.back();
mTouchMoveEvents.clear();
mTouchMoveEvents.push_back(touchMove);
} else {
ResampleTouchMoves(touchMove, aVsyncTime);
}
}
DispatchTouchEvent(touchMove);
}
void
GeckoTouchDispatcher::DispatchTouchNonMoveEvent(MultiTouchInput aInput)
{
layers::APZThreadUtils::AssertOnControllerThread();
// Flush pending touch move events, if there are any
// (DispatchTouchMoveEvents will check the mHavePendingTouchMoves flag and
// bail out if there's nothing to be done).
NotifyVsync(TimeStamp::Now());
DispatchTouchEvent(aInput);
{ // scope lock
MutexAutoLock lock(mTouchQueueLock);
mInflightNonMoveEvents--;
MOZ_ASSERT(mInflightNonMoveEvents >= 0);
}
}