Handle non-split pointers for multi-device case
During multi-device event stream, tempTouchState will already contain
some pointers from another case. When the second device becomes active
and tries to add pointers to a non-splitting window, we should not be
marking that pointer as going to the second window unless it's already
receiving pointers for that device.
Fixes: 341869464
Flag: EXEMPT bugfix
Test: TEST=inputflinger_tests; m $TEST && $ANDROID_HOST_OUT/nativetest64/$TEST/$TEST
Change-Id: Ia295c1d9d941383792e90a3d6fd981473af8f015
diff --git a/services/inputflinger/tests/InputDispatcher_test.cpp b/services/inputflinger/tests/InputDispatcher_test.cpp
index 4e662d4..9ad3de0 100644
--- a/services/inputflinger/tests/InputDispatcher_test.cpp
+++ b/services/inputflinger/tests/InputDispatcher_test.cpp
@@ -5659,6 +5659,72 @@
rightWindow->assertNoEvents();
}
+/**
+ * Two windows: left and right. The left window has PREVENT_SPLITTING input config. Device A sends a
+ * down event to the right window. Device B sends a down event to the left window, and then a
+ * POINTER_DOWN event to the right window. However, since the left window prevents splitting, the
+ * POINTER_DOWN event should only go to the left window, and not to the right window.
+ * This test attempts to reproduce a crash.
+ */
+TEST_F(InputDispatcherTest, MultiDeviceTwoWindowsPreventSplitting) {
+ std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+ sp<FakeWindowHandle> leftWindow =
+ sp<FakeWindowHandle>::make(application, mDispatcher, "Left window (prevent splitting)",
+ ui::LogicalDisplayId::DEFAULT);
+ leftWindow->setFrame(Rect(0, 0, 100, 100));
+ leftWindow->setPreventSplitting(true);
+
+ sp<FakeWindowHandle> rightWindow =
+ sp<FakeWindowHandle>::make(application, mDispatcher, "Right window",
+ ui::LogicalDisplayId::DEFAULT);
+ rightWindow->setFrame(Rect(100, 0, 200, 100));
+
+ mDispatcher->onWindowInfosChanged(
+ {{*leftWindow->getInfo(), *rightWindow->getInfo()}, {}, 0, 0});
+
+ const DeviceId deviceA = 9;
+ const DeviceId deviceB = 3;
+ // Touch the right window with device A
+ mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+ .pointer(PointerBuilder(0, ToolType::FINGER).x(150).y(50))
+ .deviceId(deviceA)
+ .build());
+ rightWindow->consumeMotionEvent(AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(deviceA)));
+ // Touch the left window with device B
+ mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+ .pointer(PointerBuilder(0, ToolType::FINGER).x(50).y(50))
+ .deviceId(deviceB)
+ .build());
+ leftWindow->consumeMotionEvent(AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(deviceB)));
+ // Send a second pointer from device B to the right window. It shouldn't go to the right window
+ // because the left window prevents splitting.
+ mDispatcher->notifyMotion(MotionArgsBuilder(POINTER_1_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+ .deviceId(deviceB)
+ .pointer(PointerBuilder(0, ToolType::FINGER).x(50).y(50))
+ .pointer(PointerBuilder(1, ToolType::FINGER).x(120).y(120))
+ .build());
+ leftWindow->consumeMotionPointerDown(1, WithDeviceId(deviceB));
+
+ // Finish the gesture for both devices
+ mDispatcher->notifyMotion(MotionArgsBuilder(POINTER_1_UP, AINPUT_SOURCE_TOUCHSCREEN)
+ .deviceId(deviceB)
+ .pointer(PointerBuilder(0, ToolType::FINGER).x(50).y(50))
+ .pointer(PointerBuilder(1, ToolType::FINGER).x(120).y(120))
+ .build());
+ leftWindow->consumeMotionPointerUp(1, WithDeviceId(deviceB));
+ mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_UP, AINPUT_SOURCE_TOUCHSCREEN)
+ .pointer(PointerBuilder(0, ToolType::FINGER).x(50).y(50))
+ .deviceId(deviceB)
+ .build());
+ leftWindow->consumeMotionEvent(
+ AllOf(WithMotionAction(ACTION_UP), WithDeviceId(deviceB), WithPointerId(0, 0)));
+ mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_UP, AINPUT_SOURCE_TOUCHSCREEN)
+ .pointer(PointerBuilder(0, ToolType::FINGER).x(150).y(50))
+ .deviceId(deviceA)
+ .build());
+ rightWindow->consumeMotionEvent(AllOf(WithMotionAction(ACTION_UP), WithDeviceId(deviceA)));
+}
+
TEST_F(InputDispatcherTest, TouchpadThreeFingerSwipeOnlySentToTrustedOverlays) {
std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
sp<FakeWindowHandle> window = sp<FakeWindowHandle>::make(application, mDispatcher, "Window",