Allow touches to slide out of the navigation bar. (98db5fab) · Commits · e / os / android_frameworks_base

core/java/android/view/WindowManager.java

+13 −1

Original line number	Diff line number	Diff line
		@@ -686,6 +686,18 @@ public interface WindowManager extends ViewManager {
		// ----- HIDDEN FLAGS.
		// These start at the high bit and go down.

		/** Window flag: Enable touches to slide out of a window into neighboring
		* windows in mid-gesture instead of being captured for the duration of
		* the gesture.
		*
		* This flag changes the behavior of touch focus for this window only.
		* Touches can slide out of the window but they cannot necessarily slide
		* back in (unless the other window with touch focus permits it).
		*
		* {@hide}
		*/
		public static final int FLAG_SLIPPERY = 0x04000000;

		/**
		* Flag for a window belonging to an activity that responds to {@link KeyEvent#KEYCODE_MENU}
		* and therefore needs a Menu key. For devices where Menu is a physical button this flag is

packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java

+2 −1

Original line number	Diff line number	Diff line
		@@ -349,7 +349,8 @@ public class PhoneStatusBar extends StatusBar {
		\| WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS
		\| WindowManager.LayoutParams.FLAG_TOUCHABLE_WHEN_WAKING
		\| WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
		\| WindowManager.LayoutParams.FLAG_SPLIT_TOUCH,
		\| WindowManager.LayoutParams.FLAG_SPLIT_TOUCH
		\| WindowManager.LayoutParams.FLAG_SLIPPERY,
		PixelFormat.TRANSLUCENT);

		lp.setTitle("NavigationBar");

services/input/InputDispatcher.cpp

+77 −4

Original line number	Diff line number	Diff line
		@@ -1412,6 +1412,50 @@ int32_t InputDispatcher::findTouchedWindowTargetsLocked(nsecs_t currentTime,
		injectionResult = INPUT_EVENT_INJECTION_FAILED;
		goto Failed;
		}

		// Check whether touches should slip outside of the current foreground window.
		if (maskedAction == AMOTION_EVENT_ACTION_MOVE
		&& entry->pointerCount == 1
		&& mTempTouchState.isSlippery()) {
		const MotionSample* sample = &entry->firstSample;
		int32_t x = int32_t(sample->pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_X));
		int32_t y = int32_t(sample->pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_Y));

		const InputWindow* oldTouchedWindow = mTempTouchState.getFirstForegroundWindow();
		const InputWindow* newTouchedWindow = findTouchedWindowAtLocked(x, y);
		if (oldTouchedWindow != newTouchedWindow && newTouchedWindow) {
		#if DEBUG_FOCUS
		LOGD("Touch is slipping out of window %s into window %s.",
		oldTouchedWindow->name.string(), newTouchedWindow->name.string());
		#endif
		// Make a slippery exit from the old window.
		mTempTouchState.addOrUpdateWindow(oldTouchedWindow,
		InputTarget::FLAG_DISPATCH_AS_SLIPPERY_EXIT, BitSet32(0));

		// Make a slippery entrance into the new window.
		if (newTouchedWindow->supportsSplitTouch()) {
		isSplit = true;
		}

		int32_t targetFlags = InputTarget::FLAG_FOREGROUND
		\| InputTarget::FLAG_DISPATCH_AS_SLIPPERY_ENTER;
		if (isSplit) {
		targetFlags \|= InputTarget::FLAG_SPLIT;
		}
		if (isWindowObscuredAtPointLocked(newTouchedWindow, x, y)) {
		targetFlags \|= InputTarget::FLAG_WINDOW_IS_OBSCURED;
		}

		BitSet32 pointerIds;
		if (isSplit) {
		pointerIds.markBit(entry->pointerProperties[0].id);
		}
		mTempTouchState.addOrUpdateWindow(newTouchedWindow, targetFlags, pointerIds);

		// Split the batch here so we send exactly one sample.
		*outSplitBatchAfterSample = &entry->firstSample;
		}
		}
		}

		if (newHoverWindow != mLastHoverWindow) {
		@@ -1884,6 +1928,10 @@ void InputDispatcher::prepareDispatchCycleLocked(nsecs_t currentTime,
		resumeWithAppendedMotionSample, InputTarget::FLAG_DISPATCH_AS_HOVER_ENTER);
		enqueueDispatchEntryLocked(connection, eventEntry, inputTarget,
		resumeWithAppendedMotionSample, InputTarget::FLAG_DISPATCH_AS_IS);
		enqueueDispatchEntryLocked(connection, eventEntry, inputTarget,
		resumeWithAppendedMotionSample, InputTarget::FLAG_DISPATCH_AS_SLIPPERY_EXIT);
		enqueueDispatchEntryLocked(connection, eventEntry, inputTarget,
		resumeWithAppendedMotionSample, InputTarget::FLAG_DISPATCH_AS_SLIPPERY_ENTER);

		// If the outbound queue was previously empty, start the dispatch cycle going.
		if (wasEmpty && !connection->outboundQueue.isEmpty()) {
		@@ -1985,6 +2033,10 @@ void InputDispatcher::startDispatchCycleLocked(nsecs_t currentTime,
		action = AMOTION_EVENT_ACTION_HOVER_EXIT;
		} else if (dispatchEntry->targetFlags & InputTarget::FLAG_DISPATCH_AS_HOVER_ENTER) {
		action = AMOTION_EVENT_ACTION_HOVER_ENTER;
		} else if (dispatchEntry->targetFlags & InputTarget::FLAG_DISPATCH_AS_SLIPPERY_EXIT) {
		action = AMOTION_EVENT_ACTION_CANCEL;
		} else if (dispatchEntry->targetFlags & InputTarget::FLAG_DISPATCH_AS_SLIPPERY_ENTER) {
		action = AMOTION_EVENT_ACTION_DOWN;
		}
		if (dispatchEntry->targetFlags & InputTarget::FLAG_WINDOW_IS_OBSCURED) {
		flags \|= AMOTION_EVENT_FLAG_WINDOW_IS_OBSCURED;
		@@ -4386,6 +4438,9 @@ void InputDispatcher::TouchState::addOrUpdateWindow(const InputWindow* window,
		TouchedWindow& touchedWindow = windows.editItemAt(i);
		if (touchedWindow.window == window) {
		touchedWindow.targetFlags \|= targetFlags;
		if (targetFlags & InputTarget::FLAG_DISPATCH_AS_SLIPPERY_EXIT) {
		touchedWindow.targetFlags &= ~InputTarget::FLAG_DISPATCH_AS_IS;
		}
		touchedWindow.pointerIds.value \|= pointerIds.value;
		return;
		}
		@@ -4403,7 +4458,8 @@ void InputDispatcher::TouchState::addOrUpdateWindow(const InputWindow* window,
		void InputDispatcher::TouchState::filterNonAsIsTouchWindows() {
		for (size_t i = 0 ; i < windows.size(); ) {
		TouchedWindow& window = windows.editItemAt(i);
		if (window.targetFlags & InputTarget::FLAG_DISPATCH_AS_IS) {
		if (window.targetFlags & (InputTarget::FLAG_DISPATCH_AS_IS
		\| InputTarget::FLAG_DISPATCH_AS_SLIPPERY_ENTER)) {
		window.targetFlags &= ~InputTarget::FLAG_DISPATCH_MASK;
		window.targetFlags \|= InputTarget::FLAG_DISPATCH_AS_IS;
		i += 1;
		@@ -4413,15 +4469,32 @@ void InputDispatcher::TouchState::filterNonAsIsTouchWindows() {
		}
		}

		const InputWindow* InputDispatcher::TouchState::getFirstForegroundWindow() {
		const InputWindow* InputDispatcher::TouchState::getFirstForegroundWindow() const {
		for (size_t i = 0; i < windows.size(); i++) {
		if (windows[i].targetFlags & InputTarget::FLAG_FOREGROUND) {
		return windows[i].window;
		const TouchedWindow& window = windows.itemAt(i);
		if (window.targetFlags & InputTarget::FLAG_FOREGROUND) {
		return window.window;
		}
		}
		return NULL;
		}

		bool InputDispatcher::TouchState::isSlippery() const {
		// Must have exactly one foreground window.
		bool haveSlipperyForegroundWindow = false;
		for (size_t i = 0; i < windows.size(); i++) {
		const TouchedWindow& window = windows.itemAt(i);
		if (window.targetFlags & InputTarget::FLAG_FOREGROUND) {
		if (haveSlipperyForegroundWindow
		\|\| !(window.window->layoutParamsFlags & InputWindow::FLAG_SLIPPERY)) {
		return false;
		}
		haveSlipperyForegroundWindow = true;
		}
		}
		return haveSlipperyForegroundWindow;
		}


		// --- InputDispatcherThread ---

services/input/InputDispatcher.h

+16 −3

Original line number	Diff line number	Diff line
		@@ -121,11 +121,23 @@ struct InputTarget {
		* The event is transmuted into ACTION_HOVER_ENTER. */
		FLAG_DISPATCH_AS_HOVER_EXIT = 1 << 11,

		/* This flag indicates that the event should be canceled.
		* It is used to transmute ACTION_MOVE into ACTION_CANCEL when a touch slips
		* outside of a window. */
		FLAG_DISPATCH_AS_SLIPPERY_EXIT = 1 << 12,

		/* This flag indicates that the event should be dispatched as an initial down.
		* It is used to transmute ACTION_MOVE into ACTION_DOWN when a touch slips
		* into a new window. */
		FLAG_DISPATCH_AS_SLIPPERY_ENTER = 1 << 13,

		/* Mask for all dispatch modes. */
		FLAG_DISPATCH_MASK = FLAG_DISPATCH_AS_IS
		\| FLAG_DISPATCH_AS_OUTSIDE
		\| FLAG_DISPATCH_AS_HOVER_ENTER
		\| FLAG_DISPATCH_AS_HOVER_EXIT,
		\| FLAG_DISPATCH_AS_HOVER_EXIT
		\| FLAG_DISPATCH_AS_SLIPPERY_EXIT
		\| FLAG_DISPATCH_AS_SLIPPERY_ENTER,
		};

		// The input channel to be targeted.
		@@ -952,7 +964,8 @@ private:
		void copyFrom(const TouchState& other);
		void addOrUpdateWindow(const InputWindow* window,int32_t targetFlags, BitSet32 pointerIds);
		void filterNonAsIsTouchWindows();
		const InputWindow* getFirstForegroundWindow();
		const InputWindow* getFirstForegroundWindow() const;
		bool isSlippery() const;
		};

		TouchState mTouchState;

services/input/InputWindow.h

+4 −0

Original line number	Diff line number	Diff line
		@@ -80,6 +80,10 @@ struct InputWindow {
		FLAG_TURN_SCREEN_ON = 0x00200000,
		FLAG_DISMISS_KEYGUARD = 0x00400000,
		FLAG_SPLIT_TOUCH = 0x00800000,
		FLAG_HARDWARE_ACCELERATED = 0x01000000,
		FLAG_HARDWARE_ACCELERATED_SYSTEM = 0x02000000,
		FLAG_SLIPPERY = 0x04000000,
		FLAG_NEEDS_MENU_KEY = 0x08000000,
		FLAG_KEEP_SURFACE_WHILE_ANIMATING = 0x10000000,
		FLAG_COMPATIBLE_WINDOW = 0x20000000,
		FLAG_SYSTEM_ERROR = 0x40000000,