void
nsWindow::DispatchTouchEventForAPZ(const MultiTouchInput& aInput,
const ScrollableLayerGuid& aGuid,
const uint64_t aInputBlockId)
{
MOZ_ASSERT(NS_IsMainThread());
UserActivity();
// Convert it to an event we can send to Goanna
WidgetTouchEvent event = aInput.ToWidgetTouchEvent(this);
// If there is an event capturing child process, send it directly there.
// This happens if we already sent a touchstart event through the root
// process hit test and it ended up going to a child process. The event
// capturing process should get all subsequent touch events in the same
// event block. In this case the TryCapture call below will return true,
// and the child process will take care of responding to the event as needed
// so we don't need to do anything else here.
if (TabParent* capturer = TabParent::GetEventCapturer()) {
InputAPZContext context(aGuid, aInputBlockId);
if (capturer->TryCapture(event)) {
return;
}
}
// If it didn't get captured, dispatch the event into the goanna root process
// for "normal" flow. The event might get sent to the child process still,
// but if it doesn't we need to notify the APZ of various things. All of
// that happens in DispatchEventForAPZ
DispatchEventForAPZ(&event, aGuid, aInputBlockId);
}
void
GeckoTouchDispatcher::DispatchTouchEvent(MultiTouchInput& aMultiTouch)
{
if ((aMultiTouch.mType == MultiTouchInput::MULTITOUCH_END ||
aMultiTouch.mType == MultiTouchInput::MULTITOUCH_CANCEL) &&
aMultiTouch.mTouches.Length() == 1) {
MutexAutoLock lock(mTouchQueueLock);
mTouchMoveEvents.clear();
} else if (aMultiTouch.mType == MultiTouchInput::MULTITOUCH_START &&
aMultiTouch.mTouches.Length() == 1) {
mTouchEventsFiltered = IsExpired(aMultiTouch);
}
if (mTouchEventsFiltered) {
return;
}
bool captured = false;
WidgetTouchEvent event = aMultiTouch.ToWidgetTouchEvent(nullptr);
nsEventStatus status = nsWindow::DispatchInputEvent(event, &captured);
if (mEnabledUniformityInfo) {
const char* touchAction = "Invalid";
switch (aMultiTouch.mType) {
case MultiTouchInput::MULTITOUCH_START:
touchAction = "Touch_Event_Down";
break;
case MultiTouchInput::MULTITOUCH_MOVE:
touchAction = "Touch_Event_Move";
break;
case MultiTouchInput::MULTITOUCH_END:
case MultiTouchInput::MULTITOUCH_CANCEL:
touchAction = "Touch_Event_Up";
break;
}
const SingleTouchData& firstTouch = aMultiTouch.mTouches[0];
const ScreenIntPoint& touchPoint = firstTouch.mScreenPoint;
LOG("UniformityInfo %s %llu %d %d", touchAction, systemTime(SYSTEM_TIME_MONOTONIC),
touchPoint.x, touchPoint.y);
}
if (!captured && (aMultiTouch.mTouches.Length() == 1)) {
bool forwardToChildren = status != nsEventStatus_eConsumeNoDefault;
DispatchMouseEvent(aMultiTouch, forwardToChildren);
}
}
void
nsWindow::DispatchTouchEventForAPZ(const MultiTouchInput& aInput,
const ScrollableLayerGuid& aGuid,
const uint64_t aInputBlockId,
nsEventStatus aApzResponse)
{
MOZ_ASSERT(NS_IsMainThread());
UserActivity();
// Convert it to an event we can send to Gecko
WidgetTouchEvent event = aInput.ToWidgetTouchEvent(this);
// Dispatch the event into the gecko root process for "normal" flow.
// The event might get sent to a child process,
// but if it doesn't we need to notify the APZ of various things.
// All of that happens in ProcessUntransformedAPZEvent
ProcessUntransformedAPZEvent(&event, aGuid, aInputBlockId, aApzResponse);
}
nsEventStatus
InputQueue::ReceiveTouchInput(const RefPtr<AsyncPanZoomController>& aTarget,
bool aTargetConfirmed,
const MultiTouchInput& aEvent,
uint64_t* aOutInputBlockId) {
TouchBlockState* block = nullptr;
if (aEvent.mType == MultiTouchInput::MULTITOUCH_START) {
nsTArray<TouchBehaviorFlags> currentBehaviors;
bool haveBehaviors = false;
if (!gfxPrefs::TouchActionEnabled()) {
haveBehaviors = true;
} else if (!mInputBlockQueue.IsEmpty() && CurrentBlock()->AsTouchBlock()) {
haveBehaviors = CurrentTouchBlock()->GetAllowedTouchBehaviors(currentBehaviors);
// If the behaviours aren't set, but the main-thread response timer on
// the block is expired we still treat it as though it has behaviors,
// because in that case we still want to interrupt the fast-fling and
// use the default behaviours.
haveBehaviors |= CurrentTouchBlock()->IsContentResponseTimerExpired();
}
block = StartNewTouchBlock(aTarget, aTargetConfirmed, false);
INPQ_LOG("started new touch block %p for target %p\n", block, aTarget.get());
// XXX using the chain from |block| here may be wrong in cases where the
// target isn't confirmed and the real target turns out to be something
// else. For now assume this is rare enough that it's not an issue.
if (block == CurrentBlock() &&
aEvent.mTouches.Length() == 1 &&
block->GetOverscrollHandoffChain()->HasFastFlungApzc() &&
haveBehaviors) {
// If we're already in a fast fling, and a single finger goes down, then
// we want special handling for the touch event, because it shouldn't get
// delivered to content. Note that we don't set this flag when going
// from a fast fling to a pinch state (i.e. second finger goes down while
// the first finger is moving).
block->SetDuringFastFling();
block->SetConfirmedTargetApzc(aTarget);
if (gfxPrefs::TouchActionEnabled()) {
block->SetAllowedTouchBehaviors(currentBehaviors);
}
INPQ_LOG("block %p tagged as fast-motion\n", block);
}
CancelAnimationsForNewBlock(block);
MaybeRequestContentResponse(aTarget, block);
} else {
if (!mInputBlockQueue.IsEmpty()) {
block = mInputBlockQueue.LastElement().get()->AsTouchBlock();
}
if (!block) {
NS_WARNING("Received a non-start touch event while no touch blocks active!");
return nsEventStatus_eIgnore;
}
INPQ_LOG("received new event in block %p\n", block);
}
if (aOutInputBlockId) {
*aOutInputBlockId = block->GetBlockId();
}
// Note that the |aTarget| the APZCTM sent us may contradict the confirmed
// target set on the block. In this case the confirmed target (which may be
// null) should take priority. This is equivalent to just always using the
// target (confirmed or not) from the block.
RefPtr<AsyncPanZoomController> target = block->GetTargetApzc();
nsEventStatus result = nsEventStatus_eIgnore;
// XXX calling ArePointerEventsConsumable on |target| may be wrong here if
// the target isn't confirmed and the real target turns out to be something
// else. For now assume this is rare enough that it's not an issue.
if (block->IsDuringFastFling()) {
INPQ_LOG("dropping event due to block %p being in fast motion\n", block);
result = nsEventStatus_eConsumeNoDefault;
} else if (target && target->ArePointerEventsConsumable(block, aEvent.AsMultiTouchInput().mTouches.Length())) {
result = nsEventStatus_eConsumeDoDefault;
}
if (!MaybeHandleCurrentBlock(block, aEvent)) {
block->AddEvent(aEvent.AsMultiTouchInput());
}
return result;
}