Allow touch if some pointers are MT_TOOL_PALM
We would cancel all touch when we recevied MT_TOOL_PALM because it
becomes accidental touch, and that would break user gesture when
another non-palm pointer is still active.
- Send ACTION_POINTER_UP with AKEY_EVENT_FLAG_CANCELED when recevie
MT_TOOL_PALM if at least 2 pointers are active.
- Send ACTION_CANEL when receive MT_TOOL_PALM if only one pointer.
- Add test caseis for touch cancel scenarios, to test it would keep
dispatching non-palm event.
Test: atest inputflinger_tests
Bug: 137221719
Change-Id: Ife35a692c71e45159bfcc771317dff47fa764dda
Merged-In: Ife35a692c71e45159bfcc771317dff47fa764dda
diff --git a/services/inputflinger/reader/mapper/TouchInputMapper.cpp b/services/inputflinger/reader/mapper/TouchInputMapper.cpp
index 5545f1c..c5ebf04 100644
--- a/services/inputflinger/reader/mapper/TouchInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/TouchInputMapper.cpp
@@ -104,6 +104,7 @@
pointerCount = other.pointerCount;
hoveringIdBits = other.hoveringIdBits;
touchingIdBits = other.touchingIdBits;
+ canceledIdBits = other.canceledIdBits;
for (uint32_t i = 0; i < pointerCount; i++) {
pointers[i] = other.pointers[i];
@@ -140,6 +141,7 @@
pointerCount = 0;
hoveringIdBits.clear();
touchingIdBits.clear();
+ canceledIdBits.clear();
}
void CookedPointerData::copyFrom(const CookedPointerData& other) {
@@ -1444,10 +1446,11 @@
#if DEBUG_RAW_EVENTS
ALOGD("syncTouch: pointerCount %d -> %d, touching ids 0x%08x -> 0x%08x, "
- "hovering ids 0x%08x -> 0x%08x",
+ "hovering ids 0x%08x -> 0x%08x, canceled ids 0x%08x",
last->rawPointerData.pointerCount, next->rawPointerData.pointerCount,
last->rawPointerData.touchingIdBits.value, next->rawPointerData.touchingIdBits.value,
- last->rawPointerData.hoveringIdBits.value, next->rawPointerData.hoveringIdBits.value);
+ last->rawPointerData.hoveringIdBits.value, next->rawPointerData.hoveringIdBits.value,
+ next->rawPointerData.canceledIdBits.value);
#endif
processRawTouches(false /*timeout*/);
@@ -1892,14 +1895,15 @@
// Dispatch pointer up events.
while (!upIdBits.isEmpty()) {
uint32_t upId = upIdBits.clearFirstMarkedBit();
-
- dispatchMotion(when, policyFlags, mSource, AMOTION_EVENT_ACTION_POINTER_UP, 0, 0,
- metaState, buttonState, 0,
+ bool isCanceled = mCurrentCookedState.cookedPointerData.canceledIdBits.hasBit(upId);
+ dispatchMotion(when, policyFlags, mSource, AMOTION_EVENT_ACTION_POINTER_UP, 0,
+ isCanceled ? AMOTION_EVENT_FLAG_CANCELED : 0, metaState, buttonState, 0,
mLastCookedState.cookedPointerData.pointerProperties,
mLastCookedState.cookedPointerData.pointerCoords,
mLastCookedState.cookedPointerData.idToIndex, dispatchedIdBits, upId,
mOrientedXPrecision, mOrientedYPrecision, mDownTime);
dispatchedIdBits.clearBit(upId);
+ mCurrentCookedState.cookedPointerData.canceledIdBits.clearBit(upId);
}
// Dispatch move events if any of the remaining pointers moved from their old locations.
@@ -2025,6 +2029,8 @@
mCurrentRawState.rawPointerData.hoveringIdBits;
mCurrentCookedState.cookedPointerData.touchingIdBits =
mCurrentRawState.rawPointerData.touchingIdBits;
+ mCurrentCookedState.cookedPointerData.canceledIdBits =
+ mCurrentRawState.rawPointerData.canceledIdBits;
if (mCurrentCookedState.cookedPointerData.pointerCount == 0) {
mCurrentCookedState.buttonState = 0;
@@ -3563,7 +3569,11 @@
if (action == AMOTION_EVENT_ACTION_POINTER_DOWN) {
action = AMOTION_EVENT_ACTION_DOWN;
} else if (action == AMOTION_EVENT_ACTION_POINTER_UP) {
- action = AMOTION_EVENT_ACTION_UP;
+ if ((flags & AMOTION_EVENT_FLAG_CANCELED) != 0) {
+ action = AMOTION_EVENT_ACTION_CANCEL;
+ } else {
+ action = AMOTION_EVENT_ACTION_UP;
+ }
} else {
// Can't happen.
ALOG_ASSERT(false);