nsEventStatus
InputQueue::ReceivePanGestureInput(const RefPtr<AsyncPanZoomController>& aTarget,
bool aTargetConfirmed,
const PanGestureInput& aEvent,
uint64_t* aOutInputBlockId) {
if (aEvent.mType == PanGestureInput::PANGESTURE_MAYSTART ||
aEvent.mType == PanGestureInput::PANGESTURE_CANCELLED) {
// Ignore these events for now.
return nsEventStatus_eConsumeDoDefault;
}
PanGestureBlockState* block = nullptr;
if (!mInputBlockQueue.IsEmpty() &&
aEvent.mType != PanGestureInput::PANGESTURE_START) {
block = mInputBlockQueue.LastElement()->AsPanGestureBlock();
}
nsEventStatus result = nsEventStatus_eConsumeDoDefault;
if (!block || block->WasInterrupted()) {
if (aEvent.mType != PanGestureInput::PANGESTURE_START) {
// Only PANGESTURE_START events are allowed to start a new pan gesture block.
return nsEventStatus_eConsumeDoDefault;
}
block = new PanGestureBlockState(aTarget, aTargetConfirmed, aEvent);
INPQ_LOG("started new pan gesture block %p for target %p\n", block, aTarget.get());
if (aTargetConfirmed &&
aEvent.mRequiresContentResponseIfCannotScrollHorizontallyInStartDirection &&
!CanScrollTargetHorizontally(aEvent, block)) {
// This event may trigger a swipe gesture, depending on what our caller
// wants to do it. We need to suspend handling of this block until we get
// a content response which will tell us whether to proceed or abort the
// block.
block->SetNeedsToWaitForContentResponse(true);
// Inform our caller that we haven't scrolled in response to the event
// and that a swipe can be started from this event if desired.
result = nsEventStatus_eIgnore;
}
SweepDepletedBlocks();
mInputBlockQueue.AppendElement(block);
CancelAnimationsForNewBlock(block);
MaybeRequestContentResponse(aTarget, block);
} else {
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, which is what
// MaybeHandleCurrentBlock() does.
if (!MaybeHandleCurrentBlock(block, aEvent)) {
block->AddEvent(aEvent.AsPanGestureInput());
}
return result;
}
nsEventStatus
InputQueue::ReceivePanGestureInput(const RefPtr<AsyncPanZoomController>& aTarget,
bool aTargetConfirmed,
const PanGestureInput& aEvent,
uint64_t* aOutInputBlockId) {
if (aEvent.mType == PanGestureInput::PANGESTURE_MAYSTART ||
aEvent.mType == PanGestureInput::PANGESTURE_CANCELLED) {
// Ignore these events for now.
return nsEventStatus_eConsumeDoDefault;
}
PanGestureBlockState* block = nullptr;
if (aEvent.mType != PanGestureInput::PANGESTURE_START) {
block = mActivePanGestureBlock.get();
}
PanGestureInput event = aEvent;
nsEventStatus result = nsEventStatus_eConsumeDoDefault;
if (!block || block->WasInterrupted()) {
if (event.mType != PanGestureInput::PANGESTURE_START) {
// Only PANGESTURE_START events are allowed to start a new pan gesture
// block, but we really want to start a new block here, so we magically
// turn this input into a PANGESTURE_START.
INPQ_LOG("transmogrifying pan input %d to PANGESTURE_START for new block\n",
event.mType);
event.mType = PanGestureInput::PANGESTURE_START;
}
block = new PanGestureBlockState(aTarget, aTargetConfirmed, event);
INPQ_LOG("started new pan gesture block %p id %" PRIu64 " for target %p\n",
block, block->GetBlockId(), aTarget.get());
if (aTargetConfirmed &&
event.mRequiresContentResponseIfCannotScrollHorizontallyInStartDirection &&
!CanScrollTargetHorizontally(event, block)) {
// This event may trigger a swipe gesture, depending on what our caller
// wants to do it. We need to suspend handling of this block until we get
// a content response which will tell us whether to proceed or abort the
// block.
block->SetNeedsToWaitForContentResponse(true);
// Inform our caller that we haven't scrolled in response to the event
// and that a swipe can be started from this event if desired.
result = nsEventStatus_eIgnore;
}
mActivePanGestureBlock = block;
CancelAnimationsForNewBlock(block);
MaybeRequestContentResponse(aTarget, block);
} else {
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, which is what
// ProcessQueue() does.
mQueuedInputs.AppendElement(MakeUnique<QueuedInput>(event, *block));
ProcessQueue();
return result;
}
