Merge "Add specific z-ordering between PiP, Dream and Assistant" into rvc-dev (2ef151d3) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/wm/TaskDisplayArea.java

+73 −41

Original line number	Diff line number	Diff line
		@@ -123,6 +123,10 @@ final class TaskDisplayArea extends DisplayArea<ActivityStack> {
		private final RootWindowContainer.FindTaskResult
		mTmpFindTaskResult = new RootWindowContainer.FindTaskResult();

		// Indicates whether the Assistant should show on top of the Dream (respectively, above
		// everything else on screen). Otherwise, it will be put under always-on-top stacks.
		private final boolean mAssistantOnTopOfDream;

		/**
		* If this is the same as {@link #getFocusedStack} then the activity on the top of the focused
		* stack has been resumed. If stacks are changing position this will hold the old stack until
		@@ -148,6 +152,9 @@ final class TaskDisplayArea extends DisplayArea<ActivityStack> {
		mDisplayContent = displayContent;
		mRootWindowContainer = service.mRoot;
		mAtmService = service.mAtmService;

		mAssistantOnTopOfDream = mWmService.mContext.getResources().getBoolean(
		com.android.internal.R.bool.config_assistantOnTopOfDream);
		}

		/**
		@@ -327,55 +334,80 @@ final class TaskDisplayArea extends DisplayArea<ActivityStack> {
		}

		/**
		* When stack is added or repositioned, find a proper position for it.
		* This will make sure that pinned stack always stays on top.
		* @param requestedPosition Position requested by caller.
		* @param stack Stack to be added or positioned.
		* @param adding Flag indicates whether we're adding a new stack or positioning an existing.
		* @return The proper position for the stack.
		* Assigns a priority number to stack types. This priority defines an order between the types
		* of stacks that are added to the task display area.
		*
		* Higher priority number indicates that the stack should have a higher z-order.
		*
		* @return the priority of the stack
		*/
		private int findPositionForStack(int requestedPosition, ActivityStack stack,
		boolean adding) {
		if (stack.isActivityTypeDream()) {
		return POSITION_TOP;
		}

		if (stack.inPinnedWindowingMode()) {
		return POSITION_TOP;
		}

		final int topChildPosition = mChildren.size() - 1;
		int belowAlwaysOnTopPosition = POSITION_BOTTOM;
		for (int i = topChildPosition; i >= 0; --i) {
		// Since a stack could be repositioned while being one of the child, return
		// current index if that's the same stack we are positioning and it is always on
		// top.
		final boolean sameStack = mChildren.get(i) == stack;
		if ((sameStack && stack.isAlwaysOnTop())
		\|\| (!sameStack && !mChildren.get(i).isAlwaysOnTop())) {
		belowAlwaysOnTopPosition = i;
		break;
		}
		private int getPriority(ActivityStack stack) {
		if (mAssistantOnTopOfDream && stack.isActivityTypeAssistant()) return 4;
		if (stack.isActivityTypeDream()) return 3;
		if (stack.inPinnedWindowingMode()) return 2;
		if (stack.isAlwaysOnTop()) return 1;
		return 0;
		}

		// The max possible position we can insert the stack at.
		int maxPosition = POSITION_TOP;
		// The min possible position we can insert the stack at.
		private int findMinPositionForStack(ActivityStack stack) {
		int minPosition = POSITION_BOTTOM;
		for (int i = 0; i < mChildren.size(); ++i) {
		if (getPriority(getStackAt(i)) < getPriority(stack)) {
		minPosition = i;
		} else {
		break;
		}
		}

		if (stack.isAlwaysOnTop()) {
		if (hasPinnedTask()) {
		// Always-on-top stacks go below the pinned stack.
		maxPosition = mChildren.indexOf(mRootPinnedTask) - 1;
		// Since a stack could be repositioned while still being one of the children, we check
		// if this always-on-top stack already exists and if so, set the minPosition to its
		// previous position.
		final int currentIndex = getIndexOf(stack);
		if (currentIndex > minPosition) {
		minPosition = currentIndex;
		}
		// Always-on-top stacks need to be above all other stacks.
		minPosition = belowAlwaysOnTopPosition
		!= POSITION_BOTTOM ? belowAlwaysOnTopPosition : topChildPosition;
		} else {
		// Other stacks need to be below the always-on-top stacks.
		maxPosition = belowAlwaysOnTopPosition
		!= POSITION_BOTTOM ? belowAlwaysOnTopPosition : 0;
		}
		return minPosition;
		}

		private int findMaxPositionForStack(ActivityStack stack) {
		for (int i = mChildren.size() - 1; i >= 0; --i) {
		final ActivityStack curr = getStackAt(i);
		// Since a stack could be repositioned while still being one of the children, we check
		// if 'curr' is the same stack and skip it if so
		final boolean sameStack = curr == stack;
		if (getPriority(curr) <= getPriority(stack) && !sameStack) {
		return i;
		}
		}
		return 0;
		}

		/**
		* When stack is added or repositioned, find a proper position for it.
		*
		* The order is defined as:
		* - Dream is on top of everything
		* - PiP is directly below the Dream
		* - always-on-top stacks are directly below PiP; new always-on-top stacks are added above
		* existing ones
		* - other non-always-on-top stacks come directly below always-on-top stacks; new
		* non-always-on-top stacks are added directly below always-on-top stacks and above existing
		* non-always-on-top stacks
		* - if {@link #mAssistantOnTopOfDream} is enabled, then Assistant is on top of everything
		* (including the Dream); otherwise, it is a normal non-always-on-top stack
		*
		* @param requestedPosition Position requested by caller.
		* @param stack Stack to be added or positioned.
		* @param adding Flag indicates whether we're adding a new stack or positioning an existing.
		* @return The proper position for the stack.
		*/
		private int findPositionForStack(int requestedPosition, ActivityStack stack, boolean adding) {
		// The max possible position we can insert the stack at.
		int maxPosition = findMaxPositionForStack(stack);
		// The min possible position we can insert the stack at.
		int minPosition = findMinPositionForStack(stack);

		// Cap the requested position to something reasonable for the previous position check
		// below.

services/tests/wmtests/src/com/android/server/wm/ActivityDisplayTests.java

+24 −0

Original line number	Diff line number	Diff line
		@@ -16,6 +16,8 @@

		package com.android.server.wm;

		import static android.app.WindowConfiguration.ACTIVITY_TYPE_ASSISTANT;
		import static android.app.WindowConfiguration.ACTIVITY_TYPE_DREAM;
		import static android.app.WindowConfiguration.ACTIVITY_TYPE_HOME;
		import static android.app.WindowConfiguration.ACTIVITY_TYPE_STANDARD;
		import static android.app.WindowConfiguration.WINDOWING_MODE_FREEFORM;
		@@ -270,6 +272,28 @@ public class ActivityDisplayTests extends ActivityTestsBase {
		anotherAlwaysOnTopStack.setWindowingMode(WINDOWING_MODE_FREEFORM);
		assertTrue(anotherAlwaysOnTopStack.isAlwaysOnTop());
		assertEquals(anotherAlwaysOnTopStack, taskDisplayArea.getStackAt(topPosition - 1));

		final ActivityStack dreamStack = taskDisplayArea.createStack(
		WINDOWING_MODE_FULLSCREEN, ACTIVITY_TYPE_DREAM, true /* onTop */);
		assertEquals(taskDisplayArea, dreamStack.getDisplayArea());
		assertTrue(dreamStack.isAlwaysOnTop());
		topPosition = taskDisplayArea.getStackCount() - 1;
		// Ensure dream shows above all activities, including PiP
		assertEquals(dreamStack, taskDisplayArea.getTopStack());
		assertEquals(pinnedStack, taskDisplayArea.getStackAt(topPosition - 1));

		final ActivityStack assistStack = taskDisplayArea.createStack(
		WINDOWING_MODE_FULLSCREEN, ACTIVITY_TYPE_ASSISTANT, true /* onTop */);
		assertEquals(taskDisplayArea, assistStack.getDisplayArea());
		assertFalse(assistStack.isAlwaysOnTop());
		topPosition = taskDisplayArea.getStackCount() - 1;

		// Ensure Assistant shows as a non-always-on-top activity when config_assistantOnTopOfDream
		// is false and on top of everything when true.
		final boolean isAssistantOnTop = mContext.getResources()
		.getBoolean(com.android.internal.R.bool.config_assistantOnTopOfDream);
		assertEquals(assistStack, taskDisplayArea.getStackAt(
		isAssistantOnTop ? topPosition : topPosition - 4));
		}

		@Test

services/tests/wmtests/src/com/android/server/wm/ActivityStackTests.java

+42 −15

Original line number	Diff line number	Diff line
		@@ -471,12 +471,27 @@ public class ActivityStackTests extends ActivityTestsBase {
		assertEquals(STACK_VISIBILITY_VISIBLE_BEHIND_TRANSLUCENT,
		splitScreenSecondary2.getVisibility(null /* starting */));

		// Assistant stack shouldn't be visible behind translucent split-screen stack
		// Assistant stack shouldn't be visible behind translucent split-screen stack,
		// unless it is configured to show on top of everything.
		doReturn(false).when(assistantStack).isTranslucent(any());
		doReturn(true).when(splitScreenPrimary).isTranslucent(any());
		doReturn(true).when(splitScreenSecondary2).isTranslucent(any());
		splitScreenSecondary2.moveToFront("testShouldBeVisible_SplitScreen");
		splitScreenPrimary.moveToFront("testShouldBeVisible_SplitScreen");

		if (isAssistantOnTop()) {
		assertTrue(assistantStack.shouldBeVisible(null /* starting */));
		assertFalse(splitScreenPrimary.shouldBeVisible(null /* starting */));
		assertFalse(splitScreenSecondary2.shouldBeVisible(null /* starting */));
		assertEquals(STACK_VISIBILITY_VISIBLE,
		assistantStack.getVisibility(null /* starting */));
		assertEquals(STACK_VISIBILITY_INVISIBLE,
		splitScreenPrimary.getVisibility(null /* starting */));
		assertEquals(STACK_VISIBILITY_INVISIBLE,
		splitScreenSecondary.getVisibility(null /* starting */));
		assertEquals(STACK_VISIBILITY_INVISIBLE,
		splitScreenSecondary2.getVisibility(null /* starting */));
		} else {
		assertFalse(assistantStack.shouldBeVisible(null /* starting */));
		assertTrue(splitScreenPrimary.shouldBeVisible(null /* starting */));
		assertTrue(splitScreenSecondary2.shouldBeVisible(null /* starting */));
		@@ -489,6 +504,7 @@ public class ActivityStackTests extends ActivityTestsBase {
		assertEquals(STACK_VISIBILITY_VISIBLE,
		splitScreenSecondary2.getVisibility(null /* starting */));
		}
		}

		@Test
		public void testGetVisibility_MultiLevel() {
		@@ -927,10 +943,16 @@ public class ActivityStackTests extends ActivityTestsBase {

		splitScreenSecondary.moveToFront("testSplitScreenMoveToFront");

		if (isAssistantOnTop()) {
		assertFalse(splitScreenPrimary.shouldBeVisible(null /* starting */));
		assertFalse(splitScreenSecondary.shouldBeVisible(null /* starting */));
		assertTrue(assistantStack.shouldBeVisible(null /* starting */));
		} else {
		assertTrue(splitScreenPrimary.shouldBeVisible(null /* starting */));
		assertTrue(splitScreenSecondary.shouldBeVisible(null /* starting */));
		assertFalse(assistantStack.shouldBeVisible(null /* starting */));
		}
		}

		private ActivityStack createStandardStackForVisibilityTest(int windowingMode,
		boolean translucent) {
		@@ -1344,6 +1366,11 @@ public class ActivityStackTests extends ActivityTestsBase {
		anyBoolean());
		}

		private boolean isAssistantOnTop() {
		return mContext.getResources().getBoolean(
		com.android.internal.R.bool.config_assistantOnTopOfDream);
		}

		private void verifyShouldSleepActivities(boolean focusedStack,
		boolean keyguardGoingAway, boolean displaySleeping, boolean expected) {
		final DisplayContent display = mock(DisplayContent.class);