am 78d15acf: Merge "Make secure views tolerate IME overlays." into gingerbread (da5aa4cd) · Commits · e / os / platform_frameworks_native

include/ui/InputDispatcher.h

+9 −2

Original line number	Diff line number	Diff line
		@@ -212,8 +212,15 @@ struct InputWindow {
		int32_t ownerPid;
		int32_t ownerUid;

		bool visibleFrameIntersects(const InputWindow* other) const;
		bool touchableAreaContainsPoint(int32_t x, int32_t y) const;
		bool frameContainsPoint(int32_t x, int32_t y) const;

		/* Returns true if the window is of a trusted type that is allowed to silently
		* overlay other windows for the purpose of implementing the secure views feature.
		* Trusted overlays, such as IME windows, can partly obscure other windows without causing
		* motion events to be delivered to them with AMOTION_EVENT_FLAG_WINDOW_IS_OBSCURED.
		*/
		bool isTrustedOverlay() const;
		};


		@@ -962,7 +969,7 @@ private:
		bool shouldPokeUserActivityForCurrentInputTargetsLocked();
		void pokeUserActivityLocked(nsecs_t eventTime, int32_t eventType);
		bool checkInjectionPermission(const InputWindow* window, const InjectionState* injectionState);
		bool isWindowObscuredLocked(const InputWindow* window);
		bool isWindowObscuredAtPointLocked(const InputWindow* window, int32_t x, int32_t y) const;
		bool isWindowFinishedWithPreviousInputLocked(const InputWindow* window);
		String8 getApplicationWindowLabelLocked(const InputApplication* application,
		const InputWindow* window);

libs/ui/InputDispatcher.cpp

+30 −27

Original line number	Diff line number	Diff line
		@@ -134,18 +134,21 @@ static bool validateMotionEvent(int32_t action, size_t pointerCount,

		// --- InputWindow ---

		bool InputWindow::visibleFrameIntersects(const InputWindow* other) const {
		return visibleFrameRight > other->visibleFrameLeft
		&& visibleFrameLeft < other->visibleFrameRight
		&& visibleFrameBottom > other->visibleFrameTop
		&& visibleFrameTop < other->visibleFrameBottom;
		}

		bool InputWindow::touchableAreaContainsPoint(int32_t x, int32_t y) const {
		return x >= touchableAreaLeft && x <= touchableAreaRight
		&& y >= touchableAreaTop && y <= touchableAreaBottom;
		}

		bool InputWindow::frameContainsPoint(int32_t x, int32_t y) const {
		return x >= frameLeft && x <= frameRight
		&& y >= frameTop && y <= frameBottom;
		}

		bool InputWindow::isTrustedOverlay() const {
		return layoutParamsType == TYPE_INPUT_METHOD
		\|\| layoutParamsType == TYPE_INPUT_METHOD_DIALOG;
		}


		// --- InputDispatcher ---

		@@ -1053,8 +1056,12 @@ int32_t InputDispatcher::findTouchedWindowTargetsLocked(nsecs_t currentTime,

		if (maskedAction == AMOTION_EVENT_ACTION_DOWN
		&& (flags & InputWindow::FLAG_WATCH_OUTSIDE_TOUCH)) {
		mTempTouchState.addOrUpdateWindow(window,
		InputTarget::FLAG_OUTSIDE, BitSet32(0));
		int32_t outsideTargetFlags = InputTarget::FLAG_OUTSIDE;
		if (isWindowObscuredAtPointLocked(window, x, y)) {
		outsideTargetFlags \|= InputTarget::FLAG_WINDOW_IS_OBSCURED;
		}

		mTempTouchState.addOrUpdateWindow(window, outsideTargetFlags, BitSet32(0));
		}
		}
		}
		@@ -1083,10 +1090,6 @@ int32_t InputDispatcher::findTouchedWindowTargetsLocked(nsecs_t currentTime,
		// (May be NULL which is why we put this code block before the next check.)
		newTouchedWindow = mTempTouchState.getFirstForegroundWindow();
		}
		int32_t targetFlags = InputTarget::FLAG_FOREGROUND;
		if (isSplit) {
		targetFlags \|= InputTarget::FLAG_SPLIT;
		}

		// If we did not find a touched window then fail.
		if (! newTouchedWindow) {
		@@ -1106,6 +1109,15 @@ int32_t InputDispatcher::findTouchedWindowTargetsLocked(nsecs_t currentTime,
		goto Failed;
		}

		// Set target flags.
		int32_t targetFlags = InputTarget::FLAG_FOREGROUND;
		if (isSplit) {
		targetFlags \|= InputTarget::FLAG_SPLIT;
		}
		if (isWindowObscuredAtPointLocked(newTouchedWindow, x, y)) {
		targetFlags \|= InputTarget::FLAG_WINDOW_IS_OBSCURED;
		}

		// Update the temporary touch state.
		BitSet32 pointerIds;
		if (isSplit) {
		@@ -1186,19 +1198,9 @@ int32_t InputDispatcher::findTouchedWindowTargetsLocked(nsecs_t currentTime,
		for (size_t i = 0; i < mWindows.size(); i++) {
		const InputWindow* window = & mWindows[i];
		if (window->layoutParamsType == InputWindow::TYPE_WALLPAPER) {
		mTempTouchState.addOrUpdateWindow(window, 0, BitSet32(0));
		}
		}
		}
		mTempTouchState.addOrUpdateWindow(window,
		InputTarget::FLAG_WINDOW_IS_OBSCURED, BitSet32(0));
		}

		// If a touched window has been obscured at any point during the touch gesture, set
		// the appropriate flag so we remember it for the entire gesture.
		for (size_t i = 0; i < mTempTouchState.windows.size(); i++) {
		TouchedWindow& touchedWindow = mTempTouchState.windows.editItemAt(i);
		if ((touchedWindow.targetFlags & InputTarget::FLAG_WINDOW_IS_OBSCURED) == 0) {
		if (isWindowObscuredLocked(touchedWindow.window)) {
		touchedWindow.targetFlags \|= InputTarget::FLAG_WINDOW_IS_OBSCURED;
		}
		}
		}
		@@ -1326,14 +1328,15 @@ bool InputDispatcher::checkInjectionPermission(const InputWindow* window,
		return true;
		}

		bool InputDispatcher::isWindowObscuredLocked(const InputWindow* window) {
		bool InputDispatcher::isWindowObscuredAtPointLocked(
		const InputWindow* window, int32_t x, int32_t y) const {
		size_t numWindows = mWindows.size();
		for (size_t i = 0; i < numWindows; i++) {
		const InputWindow* other = & mWindows.itemAt(i);
		if (other == window) {
		break;
		}
		if (other->visible && window->visibleFrameIntersects(other)) {
		if (other->visible && ! other->isTrustedOverlay() && other->frameContainsPoint(x, y)) {
		return true;
		}
		}