inputdispatcher: Block touch while stylus is hovering
Before this CL, we only blocked touch when stylus was down. In this CL,
we change the behaviour to match the current behaviour inside
PreferStylusOverTouchBlocker: while stylus is hovering, reject touch.
That means:
1) While stylus is hovering, touch is ignored
2) If stylus starts hovering when touch is down, cancel touch
Bug: 308745008
Test: TEST=inputflinger_tests; m $TEST && $ANDROID_HOST_OUT/nativetest64/$TEST/$TEST
Change-Id: I3ebbc71753d67ef4603f8f018c529cb0474cd19e
diff --git a/services/inputflinger/dispatcher/InputState.cpp b/services/inputflinger/dispatcher/InputState.cpp
index 16cc266..17f0b87 100644
--- a/services/inputflinger/dispatcher/InputState.cpp
+++ b/services/inputflinger/dispatcher/InputState.cpp
@@ -24,19 +24,6 @@
namespace android::inputdispatcher {
-namespace {
-bool isHoverAction(int32_t action) {
- switch (MotionEvent::getActionMasked(action)) {
- case AMOTION_EVENT_ACTION_HOVER_ENTER:
- case AMOTION_EVENT_ACTION_HOVER_MOVE:
- case AMOTION_EVENT_ACTION_HOVER_EXIT: {
- return true;
- }
- }
- return false;
-}
-} // namespace
-
InputState::InputState(const IdGenerator& idGenerator) : mIdGenerator(idGenerator) {}
InputState::~InputState() {}
@@ -113,13 +100,6 @@
if (isStylusEvent(lastMemento.source, lastMemento.pointerProperties) &&
!isStylusEvent(entry.source, entry.pointerProperties)) {
// We already have a stylus stream, and the new event is not from stylus.
- if (!lastMemento.hovering) {
- // If stylus is currently down, reject the new event unconditionally.
- return false;
- }
- }
- if (!lastMemento.hovering && isHoverAction(action)) {
- // Reject hovers if already down
return false;
}
}
@@ -366,19 +346,13 @@
return false;
}
- // We want stylus down to block touch and other source types, but stylus hover should not
- // have such an effect.
- if (isHoverAction(motionEntry.action) && !lastMemento.hovering) {
- // New event is a hover. Keep the current non-hovering gesture instead
- return false;
- }
-
- if (isStylusEvent(lastMemento.source, lastMemento.pointerProperties) && !lastMemento.hovering) {
- // We have non-hovering stylus already active.
+ if (isStylusEvent(lastMemento.source, lastMemento.pointerProperties)) {
+ // A stylus is already active.
if (isStylusEvent(motionEntry.source, motionEntry.pointerProperties) &&
actionMasked == AMOTION_EVENT_ACTION_DOWN) {
- // If this new event is a stylus from a different device going down, then cancel the old
- // stylus and allow the new stylus to take over
+ // If this new event is from a different device, then cancel the old
+ // stylus and allow the new stylus to take over, but only if it's going down.
+ // Otherwise, they will start to race each other.
return true;
}