Add more dispatcher tests for appearing windows
It has been suggested that a window that appears while the gesture is
active may cause incorrect behaviour in dispatcher if it then touched
with additional new pointers.
These tests attempt to check some of those scenarios. Currently, there's
no evidence that this could lead to a crash.
Flag: TEST_ONLY
Bug: 341869464
Test: TEST=inputflinger_tests; m $TEST && $ANDROID_HOST_OUT/nativetest64/$TEST/$TEST --gtest_break_on_failure --gtest_filter="*SplitTouches*"
Change-Id: I856907958684e84d08858aa4b92199a28095e58a
diff --git a/services/inputflinger/tests/InputDispatcher_test.cpp b/services/inputflinger/tests/InputDispatcher_test.cpp
index 5eab6be..04ed670 100644
--- a/services/inputflinger/tests/InputDispatcher_test.cpp
+++ b/services/inputflinger/tests/InputDispatcher_test.cpp
@@ -4172,6 +4172,121 @@
window2->consumeMotionEvent(WithDownTime(secondDown->getDownTime()));
}
+/**
+ * When events are not split, the downTime should be adjusted such that the downTime corresponds
+ * to the event time of the first ACTION_DOWN. If a new window appears, it should not affect
+ * the event routing because the first window prevents splitting.
+ */
+TEST_F(InputDispatcherTest, SplitTouchesSendCorrectActionDownTimeForNewWindow) {
+ std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+ sp<FakeWindowHandle> window1 =
+ sp<FakeWindowHandle>::make(application, mDispatcher, "Window1", DISPLAY_ID);
+ window1->setTouchableRegion(Region{{0, 0, 100, 100}});
+ window1->setPreventSplitting(true);
+
+ sp<FakeWindowHandle> window2 =
+ sp<FakeWindowHandle>::make(application, mDispatcher, "Window2", DISPLAY_ID);
+ window2->setTouchableRegion(Region{{100, 0, 200, 100}});
+
+ mDispatcher->onWindowInfosChanged({{*window1->getInfo()}, {}, 0, 0});
+
+ // Touch down on the first window
+ NotifyMotionArgs downArgs = MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+ .pointer(PointerBuilder(0, ToolType::FINGER).x(50).y(50))
+ .build();
+ mDispatcher->notifyMotion(downArgs);
+
+ window1->consumeMotionEvent(
+ AllOf(WithMotionAction(ACTION_DOWN), WithDownTime(downArgs.downTime)));
+
+ // Second window is added
+ mDispatcher->onWindowInfosChanged({{*window1->getInfo(), *window2->getInfo()}, {}, 0, 0});
+
+ // Now touch down on the window with another pointer
+ mDispatcher->notifyMotion(MotionArgsBuilder(POINTER_1_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+ .pointer(PointerBuilder(0, ToolType::FINGER).x(50).y(50))
+ .pointer(PointerBuilder(1, ToolType::FINGER).x(150).y(50))
+ .downTime(downArgs.downTime)
+ .build());
+ window1->consumeMotionPointerDown(1, AllOf(WithDownTime(downArgs.downTime)));
+
+ // Finish the gesture
+ mDispatcher->notifyMotion(MotionArgsBuilder(POINTER_1_UP, AINPUT_SOURCE_TOUCHSCREEN)
+ .pointer(PointerBuilder(0, ToolType::FINGER).x(50).y(50))
+ .pointer(PointerBuilder(1, ToolType::FINGER).x(150).y(50))
+ .downTime(downArgs.downTime)
+ .build());
+ mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_UP, AINPUT_SOURCE_TOUCHSCREEN)
+ .pointer(PointerBuilder(0, ToolType::FINGER).x(50).y(50))
+ .downTime(downArgs.downTime)
+ .build());
+ window1->consumeMotionPointerUp(1, AllOf(WithDownTime(downArgs.downTime)));
+ window1->consumeMotionEvent(
+ AllOf(WithMotionAction(ACTION_UP), WithDownTime(downArgs.downTime)));
+ window2->assertNoEvents();
+}
+
+/**
+ * When splitting touch events, the downTime should be adjusted such that the downTime corresponds
+ * to the event time of the first ACTION_DOWN sent to the new window.
+ * If a new window that does not support split appears on the screen and gets touched with the
+ * second finger, it should not get any events because it doesn't want split touches. At the same
+ * time, the first window should not get the pointer_down event because it supports split touches
+ * (and the touch occurred outside of the bounds of window1).
+ */
+TEST_F(InputDispatcherTest, SplitTouchesDropsEventForNonSplittableSecondWindow) {
+ std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+ sp<FakeWindowHandle> window1 =
+ sp<FakeWindowHandle>::make(application, mDispatcher, "Window1", DISPLAY_ID);
+ window1->setTouchableRegion(Region{{0, 0, 100, 100}});
+
+ sp<FakeWindowHandle> window2 =
+ sp<FakeWindowHandle>::make(application, mDispatcher, "Window2", DISPLAY_ID);
+ window2->setTouchableRegion(Region{{100, 0, 200, 100}});
+
+ mDispatcher->onWindowInfosChanged({{*window1->getInfo()}, {}, 0, 0});
+
+ // Touch down on the first window
+ NotifyMotionArgs downArgs = MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+ .pointer(PointerBuilder(0, ToolType::FINGER).x(50).y(50))
+ .build();
+ mDispatcher->notifyMotion(downArgs);
+
+ window1->consumeMotionEvent(
+ AllOf(WithMotionAction(ACTION_DOWN), WithDownTime(downArgs.downTime)));
+
+ // Second window is added
+ window2->setPreventSplitting(true);
+ mDispatcher->onWindowInfosChanged({{*window1->getInfo(), *window2->getInfo()}, {}, 0, 0});
+
+ // Now touch down on the window with another pointer
+ mDispatcher->notifyMotion(MotionArgsBuilder(POINTER_1_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+ .pointer(PointerBuilder(0, ToolType::FINGER).x(50).y(50))
+ .pointer(PointerBuilder(1, ToolType::FINGER).x(150).y(50))
+ .downTime(downArgs.downTime)
+ .build());
+ // Event is dropped because window2 doesn't support split touch, and window1 does.
+
+ // Complete the gesture
+ mDispatcher->notifyMotion(MotionArgsBuilder(POINTER_1_UP, AINPUT_SOURCE_TOUCHSCREEN)
+ .pointer(PointerBuilder(0, ToolType::FINGER).x(50).y(50))
+ .pointer(PointerBuilder(1, ToolType::FINGER).x(150).y(50))
+ .downTime(downArgs.downTime)
+ .build());
+ // A redundant MOVE event is generated that doesn't carry any new information
+ window1->consumeMotionEvent(
+ AllOf(WithMotionAction(ACTION_MOVE), WithDownTime(downArgs.downTime)));
+ mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_UP, AINPUT_SOURCE_TOUCHSCREEN)
+ .pointer(PointerBuilder(0, ToolType::FINGER).x(50).y(50))
+ .downTime(downArgs.downTime)
+ .build());
+
+ window1->consumeMotionEvent(
+ AllOf(WithMotionAction(ACTION_UP), WithDownTime(downArgs.downTime)));
+ window1->assertNoEvents();
+ window2->assertNoEvents();
+}
+
TEST_F(InputDispatcherTest, HoverMoveEnterMouseClickAndHoverMoveExit) {
std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
sp<FakeWindowHandle> windowLeft = sp<FakeWindowHandle>::make(application, mDispatcher, "Left",