void
APZCCallbackHelper::SendSetTargetAPZCNotification(nsIWidget* aWidget,
nsIDocument* aDocument,
const WidgetGUIEvent& aEvent,
const ScrollableLayerGuid& aGuid,
uint64_t aInputBlockId)
{
if (!aWidget || !aDocument) {
return;
}
if (aInputBlockId == sLastTargetAPZCNotificationInputBlock) {
// We have already confirmed the target APZC for a previous event of this
// input block. If we activated a scroll frame for this input block,
// sending another target APZC confirmation would be harmful, as it might
// race the original confirmation (which needs to go through a layers
// transaction).
APZCCH_LOG("Not resending target APZC confirmation for input block %" PRIu64 "\n", aInputBlockId);
return;
}
sLastTargetAPZCNotificationInputBlock = aInputBlockId;
if (nsIPresShell* shell = aDocument->GetShell()) {
if (nsIFrame* rootFrame = shell->GetRootFrame()) {
bool waitForRefresh = false;
nsTArray<ScrollableLayerGuid> targets;
if (const WidgetTouchEvent* touchEvent = aEvent.AsTouchEvent()) {
for (size_t i = 0; i < touchEvent->touches.Length(); i++) {
waitForRefresh |= PrepareForSetTargetAPZCNotification(aWidget, aGuid,
rootFrame, touchEvent->touches[i]->mRefPoint, &targets);
}
} else if (const WidgetWheelEvent* wheelEvent = aEvent.AsWheelEvent()) {
waitForRefresh = PrepareForSetTargetAPZCNotification(aWidget, aGuid,
rootFrame, wheelEvent->refPoint, &targets);
}
// TODO: Do other types of events need to be handled?
if (!targets.IsEmpty()) {
SendSetTargetAPZCNotificationHelper(
aWidget,
shell,
aInputBlockId,
targets,
waitForRefresh);
}
}
}
}
void
APZCCallbackHelper::SendSetTargetAPZCNotification(nsIWidget* aWidget,
nsIDocument* aDocument,
const WidgetGUIEvent& aEvent,
const ScrollableLayerGuid& aGuid,
uint64_t aInputBlockId)
{
if (!aWidget || !aDocument) {
return;
}
if (nsIPresShell* shell = aDocument->GetShell()) {
if (nsIFrame* rootFrame = shell->GetRootFrame()) {
bool waitForRefresh = false;
nsTArray<ScrollableLayerGuid> targets;
if (const WidgetTouchEvent* touchEvent = aEvent.AsTouchEvent()) {
for (size_t i = 0; i < touchEvent->touches.Length(); i++) {
waitForRefresh |= PrepareForSetTargetAPZCNotification(aWidget, aGuid,
rootFrame, touchEvent->touches[i]->mRefPoint, &targets);
}
} else if (const WidgetWheelEvent* wheelEvent = aEvent.AsWheelEvent()) {
waitForRefresh = PrepareForSetTargetAPZCNotification(aWidget, aGuid,
rootFrame, wheelEvent->refPoint, &targets);
}
// TODO: Do other types of events need to be handled?
if (!targets.IsEmpty()) {
SendSetTargetAPZCNotificationHelper(
aWidget,
shell,
aInputBlockId,
targets,
waitForRefresh);
}
}
}
}
