Fix Letterboxing for Transparent Activities (de531310) · Commits · e / os / android_frameworks_base

core/res/res/values/config.xml

+4 −0

Original line number	Diff line number	Diff line
		@@ -5300,6 +5300,10 @@
		<!-- Whether using split screen aspect ratio as a default aspect ratio for unresizable apps. -->
		<bool name="config_letterboxIsSplitScreenAspectRatioForUnresizableAppsEnabled">false</bool>

		<!-- Whether the specific behaviour for translucent activities letterboxing is enabled.
		TODO(b/255532890) Enable when ignoreOrientationRequest is set -->
		<bool name="config_letterboxIsEnabledForTranslucentActivities">false</bool>

		<!-- Whether a camera compat controller is enabled to allow the user to apply or revert
		treatment for stretched issues in camera viewfinder. -->
		<bool name="config_isCameraCompatControlForStretchedIssuesEnabled">false</bool>

core/res/res/values/symbols.xml

+3 −0

Original line number	Diff line number	Diff line
		@@ -4401,6 +4401,9 @@
		<!-- Set to true to make assistant show in front of the dream/screensaver. -->
		<java-symbol type="bool" name="config_assistantOnTopOfDream"/>

		<!-- Set to true to enable letterboxing on translucent activities. -->
		<java-symbol type="bool" name="config_letterboxIsEnabledForTranslucentActivities" />

		<java-symbol type="string" name="config_overrideComponentUiPackage" />

		<java-symbol type="string" name="notification_channel_network_status" />

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

+56 −6

Original line number	Diff line number	Diff line
		@@ -1239,8 +1239,8 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A
		pw.println(prefix + "supportsEnterPipOnTaskSwitch: "
		+ supportsEnterPipOnTaskSwitch);
		}
		if (info.getMaxAspectRatio() != 0) {
		pw.println(prefix + "maxAspectRatio=" + info.getMaxAspectRatio());
		if (getMaxAspectRatio() != 0) {
		pw.println(prefix + "maxAspectRatio=" + getMaxAspectRatio());
		}
		final float minAspectRatio = getMinAspectRatio();
		if (minAspectRatio != 0) {
		@@ -1590,6 +1590,7 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A
		newParent.setResumedActivity(this, "onParentChanged");
		mImeInsetsFrozenUntilStartInput = false;
		}
		mLetterboxUiController.onActivityParentChanged(newParent);
		}

		if (rootTask != null && rootTask.topRunningActivity() == this) {
		@@ -7676,6 +7677,15 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A
		@Configuration.Orientation
		@Override
		int getRequestedConfigurationOrientation(boolean forDisplay) {
		if (mLetterboxUiController.hasInheritedOrientation()) {
		final RootDisplayArea root = getRootDisplayArea();
		if (forDisplay && root != null && root.isOrientationDifferentFromDisplay()) {
		return ActivityInfo.reverseOrientation(
		mLetterboxUiController.getInheritedOrientation());
		} else {
		return mLetterboxUiController.getInheritedOrientation();
		}
		}
		if (mOrientation == SCREEN_ORIENTATION_BEHIND && task != null) {
		// We use Task here because we want to be consistent with what happens in
		// multi-window mode where other tasks orientations are ignored.
		@@ -7803,6 +7813,9 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A

		@Nullable
		CompatDisplayInsets getCompatDisplayInsets() {
		if (mLetterboxUiController.hasInheritedLetterboxBehavior()) {
		return mLetterboxUiController.getInheritedCompatDisplayInsets();
		}
		return mCompatDisplayInsets;
		}

		@@ -7885,6 +7898,10 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A

		// TODO(b/36505427): Consider moving this method and similar ones to ConfigurationContainer.
		private void updateCompatDisplayInsets() {
		if (mLetterboxUiController.hasInheritedLetterboxBehavior()) {
		mCompatDisplayInsets = mLetterboxUiController.getInheritedCompatDisplayInsets();
		return;
		}
		if (mCompatDisplayInsets != null \|\| !shouldCreateCompatDisplayInsets()) {
		// The override configuration is set only once in size compatibility mode.
		return;
		@@ -7946,6 +7963,9 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A

		@Override
		float getCompatScale() {
		if (mLetterboxUiController.hasInheritedLetterboxBehavior()) {
		return mLetterboxUiController.getInheritedSizeCompatScale();
		}
		return hasSizeCompatBounds() ? mSizeCompatScale : super.getCompatScale();
		}

		@@ -8054,6 +8074,16 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A
		logAppCompatState();
		}

		/**
		* @return The orientation to use to understand if reachability is enabled.
		*/
		@ActivityInfo.ScreenOrientation
		int getOrientationForReachability() {
		return mLetterboxUiController.hasInheritedLetterboxBehavior()
		? mLetterboxUiController.getInheritedOrientation()
		: getRequestedConfigurationOrientation();
		}

		/**
		* Returns whether activity bounds are letterboxed.
		*
		@@ -8094,6 +8124,10 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A
		if (!ignoreVisibility && !mVisibleRequested) {
		return APP_COMPAT_STATE_CHANGED__STATE__NOT_VISIBLE;
		}
		// TODO(b/256564921): Investigate if we need new metrics for translucent activities
		if (mLetterboxUiController.hasInheritedLetterboxBehavior()) {
		return mLetterboxUiController.getInheritedAppCompatState();
		}
		if (mInSizeCompatModeForBounds) {
		return APP_COMPAT_STATE_CHANGED__STATE__LETTERBOXED_FOR_SIZE_COMPAT_MODE;
		}
		@@ -8564,6 +8598,11 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A
		}

		private boolean isInSizeCompatModeForBounds(final Rect appBounds, final Rect containerBounds) {
		if (mLetterboxUiController.hasInheritedLetterboxBehavior()) {
		// To avoid wrong app behaviour, we decided to disable SCM when a translucent activity
		// is letterboxed.
		return false;
		}
		final int appWidth = appBounds.width();
		final int appHeight = appBounds.height();
		final int containerAppWidth = containerBounds.width();
		@@ -8584,10 +8623,11 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A

		// The rest of the condition is that only one side is smaller than the container, but it
		// still needs to exclude the cases where the size is limited by the fixed aspect ratio.
		if (info.getMaxAspectRatio() > 0) {
		final float maxAspectRatio = getMaxAspectRatio();
		if (maxAspectRatio > 0) {
		final float aspectRatio = (0.5f + Math.max(appWidth, appHeight))
		/ Math.min(appWidth, appHeight);
		if (aspectRatio >= info.getMaxAspectRatio()) {
		if (aspectRatio >= maxAspectRatio) {
		// The current size has reached the max aspect ratio.
		return false;
		}
		@@ -8809,7 +8849,7 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A
		// TODO(b/36505427): Consider moving this method and similar ones to ConfigurationContainer.
		private boolean applyAspectRatio(Rect outBounds, Rect containingAppBounds,
		Rect containingBounds, float desiredAspectRatio) {
		final float maxAspectRatio = info.getMaxAspectRatio();
		final float maxAspectRatio = getMaxAspectRatio();
		final Task rootTask = getRootTask();
		final float minAspectRatio = getMinAspectRatio();
		final TaskFragment organizedTf = getOrganizedTaskFragment();
		@@ -8916,6 +8956,9 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A
		* Returns the min aspect ratio of this activity.
		*/
		float getMinAspectRatio() {
		if (mLetterboxUiController.hasInheritedLetterboxBehavior()) {
		return mLetterboxUiController.getInheritedMinAspectRatio();
		}
		if (info.applicationInfo == null) {
		return info.getMinAspectRatio();
		}
		@@ -8960,11 +9003,18 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A
		&& parent.getWindowConfiguration().getWindowingMode() == WINDOWING_MODE_FULLSCREEN;
		}

		float getMaxAspectRatio() {
		if (mLetterboxUiController.hasInheritedLetterboxBehavior()) {
		return mLetterboxUiController.getInheritedMaxAspectRatio();
		}
		return info.getMaxAspectRatio();
		}

		/**
		* Returns true if the activity has maximum or minimum aspect ratio.
		*/
		private boolean hasFixedAspectRatio() {
		return info.getMaxAspectRatio() != 0 \|\| getMinAspectRatio() != 0;
		return getMaxAspectRatio() != 0 \|\| getMinAspectRatio() != 0;
		}

		/**

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

+44 −3

Original line number	Diff line number	Diff line
		@@ -21,6 +21,7 @@ import android.annotation.NonNull;
		import android.annotation.Nullable;
		import android.content.Context;
		import android.graphics.Color;
		import android.provider.DeviceConfig;

		import com.android.internal.R;
		import com.android.internal.annotations.VisibleForTesting;
		@@ -103,6 +104,10 @@ final class LetterboxConfiguration {

		final Context mContext;

		// Responsible for the persistence of letterbox[Horizontal\|Vertical]PositionMultiplier
		@NonNull
		private final LetterboxConfigurationPersister mLetterboxConfigurationPersister;

		// Aspect ratio of letterbox for fixed orientation, values <=
		// MIN_FIXED_ORIENTATION_LETTERBOX_ASPECT_RATIO will be ignored.
		private float mFixedOrientationLetterboxAspectRatio;
		@@ -165,9 +170,12 @@ final class LetterboxConfiguration {
		// Whether using split screen aspect ratio as a default aspect ratio for unresizable apps.
		private boolean mIsSplitScreenAspectRatioForUnresizableAppsEnabled;

		// Responsible for the persistence of letterbox[Horizontal\|Vertical]PositionMultiplier
		@NonNull
		private final LetterboxConfigurationPersister mLetterboxConfigurationPersister;
		// Whether letterboxing strategy is enabled for translucent activities. If {@value false}
		// all the feature is disabled
		private boolean mTranslucentLetterboxingEnabled;

		// Allows to enable letterboxing strategy for translucent activities ignoring flags.
		private boolean mTranslucentLetterboxingOverrideEnabled;

		LetterboxConfiguration(Context systemUiContext) {
		this(systemUiContext, new LetterboxConfigurationPersister(systemUiContext,
		@@ -206,6 +214,8 @@ final class LetterboxConfiguration {
		R.dimen.config_letterboxDefaultMinAspectRatioForUnresizableApps));
		mIsSplitScreenAspectRatioForUnresizableAppsEnabled = mContext.getResources().getBoolean(
		R.bool.config_letterboxIsSplitScreenAspectRatioForUnresizableAppsEnabled);
		mTranslucentLetterboxingEnabled = mContext.getResources().getBoolean(
		R.bool.config_letterboxIsEnabledForTranslucentActivities);
		mLetterboxConfigurationPersister = letterboxConfigurationPersister;
		mLetterboxConfigurationPersister.start();
		}
		@@ -817,6 +827,32 @@ final class LetterboxConfiguration {
		R.bool.config_letterboxIsSplitScreenAspectRatioForUnresizableAppsEnabled);
		}

		boolean isTranslucentLetterboxingEnabled() {
		return mTranslucentLetterboxingOverrideEnabled \|\| (mTranslucentLetterboxingEnabled
		&& isTranslucentLetterboxingAllowed());
		}

		void setTranslucentLetterboxingEnabled(boolean translucentLetterboxingEnabled) {
		mTranslucentLetterboxingEnabled = translucentLetterboxingEnabled;
		}

		void setTranslucentLetterboxingOverrideEnabled(
		boolean translucentLetterboxingOverrideEnabled) {
		mTranslucentLetterboxingOverrideEnabled = translucentLetterboxingOverrideEnabled;
		setTranslucentLetterboxingEnabled(translucentLetterboxingOverrideEnabled);
		}

		/**
		* Resets whether we use the constraints override strategy for letterboxing when dealing
		* with translucent activities {@link R.bool.config_letterboxIsEnabledForTranslucentActivities}.
		*/
		void resetTranslucentLetterboxingEnabled() {
		final boolean newValue = mContext.getResources().getBoolean(
		R.bool.config_letterboxIsEnabledForTranslucentActivities);
		setTranslucentLetterboxingEnabled(newValue);
		setTranslucentLetterboxingOverrideEnabled(false);
		}

		/** Calculates a new letterboxPositionForHorizontalReachability value and updates the store */
		private void updatePositionForHorizontalReachability(
		Function<Integer, Integer> newHorizonalPositionFun) {
		@@ -839,4 +875,9 @@ final class LetterboxConfiguration {
		nextVerticalPosition);
		}

		// TODO(b/262378106): Cache runtime flag and implement DeviceConfig.OnPropertiesChangedListener
		static boolean isTranslucentLetterboxingAllowed() {
		return DeviceConfig.getBoolean(DeviceConfig.NAMESPACE_WINDOW_MANAGER,
		"enable_translucent_activity_letterbox", false);
		}
		}

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

+185 −8

Original line number	Diff line number	Diff line
		@@ -17,6 +17,7 @@
		package com.android.server.wm;

		import static android.app.WindowConfiguration.WINDOWING_MODE_FULLSCREEN;
		import static android.content.pm.ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED;
		import static android.content.res.Configuration.ORIENTATION_LANDSCAPE;
		import static android.content.res.Configuration.ORIENTATION_PORTRAIT;
		import static android.view.WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER;
		@@ -27,6 +28,7 @@ import static com.android.internal.util.FrameworkStatsLog.APP_COMPAT_STATE_CHANG
		import static com.android.internal.util.FrameworkStatsLog.APP_COMPAT_STATE_CHANGED__LETTERBOX_POSITION__RIGHT;
		import static com.android.internal.util.FrameworkStatsLog.APP_COMPAT_STATE_CHANGED__LETTERBOX_POSITION__TOP;
		import static com.android.internal.util.FrameworkStatsLog.APP_COMPAT_STATE_CHANGED__LETTERBOX_POSITION__UNKNOWN_POSITION;
		import static com.android.internal.util.FrameworkStatsLog.APP_COMPAT_STATE_CHANGED__STATE__UNKNOWN;
		import static com.android.internal.util.FrameworkStatsLog.LETTERBOX_POSITION_CHANGED__POSITION_CHANGE__BOTTOM_TO_CENTER;
		import static com.android.internal.util.FrameworkStatsLog.LETTERBOX_POSITION_CHANGED__POSITION_CHANGE__CENTER_TO_BOTTOM;
		import static com.android.internal.util.FrameworkStatsLog.LETTERBOX_POSITION_CHANGED__POSITION_CHANGE__CENTER_TO_LEFT;
		@@ -82,13 +84,44 @@ final class LetterboxUiController {

		private static final String TAG = TAG_WITH_CLASS_NAME ? "LetterboxUiController" : TAG_ATM;

		private static final float UNDEFINED_ASPECT_RATIO = 0f;

		private final Point mTmpPoint = new Point();

		private final LetterboxConfiguration mLetterboxConfiguration;

		private final ActivityRecord mActivityRecord;

		/*
		* WindowContainerListener responsible to make translucent activities inherit
		* constraints from the first opaque activity beneath them. It's null for not
		* translucent activities.
		*/
		@Nullable
		private WindowContainerListener mLetterboxConfigListener;

		private boolean mShowWallpaperForLetterboxBackground;

		// In case of transparent activities we might need to access the aspectRatio of the
		// first opaque activity beneath.
		private float mInheritedMinAspectRatio = UNDEFINED_ASPECT_RATIO;
		private float mInheritedMaxAspectRatio = UNDEFINED_ASPECT_RATIO;

		@Configuration.Orientation
		private int mInheritedOrientation = Configuration.ORIENTATION_UNDEFINED;

		// The app compat state for the opaque activity if any
		private int mInheritedAppCompatState = APP_COMPAT_STATE_CHANGED__STATE__UNKNOWN;

		// If true it means that the opaque activity beneath a translucent one is in SizeCompatMode.
		private boolean mIsInheritedInSizeCompatMode;

		// This is the SizeCompatScale of the opaque activity beneath a translucent one
		private float mInheritedSizeCompatScale;

		// The CompatDisplayInsets of the opaque activity beneath the translucent one.
		private ActivityRecord.CompatDisplayInsets mInheritedCompatDisplayInsets;

		@Nullable
		private Letterbox mLetterbox;

		@@ -220,7 +253,9 @@ final class LetterboxUiController {
		: mActivityRecord.inMultiWindowMode()
		? mActivityRecord.getTask().getBounds()
		: mActivityRecord.getRootTask().getParent().getBounds();
		mLetterbox.layout(spaceToFill, w.getFrame(), mTmpPoint);
		final Rect innerFrame = hasInheritedLetterboxBehavior()
		? mActivityRecord.getWindowConfiguration().getBounds() : w.getFrame();
		mLetterbox.layout(spaceToFill, innerFrame, mTmpPoint);
		} else if (mLetterbox != null) {
		mLetterbox.hide();
		}
		@@ -305,7 +340,9 @@ final class LetterboxUiController {
		}

		private void handleHorizontalDoubleTap(int x) {
		if (!isHorizontalReachabilityEnabled() \|\| mActivityRecord.isInTransition()) {
		// TODO(b/260857308): Investigate if enabling reachability for translucent activity
		if (hasInheritedLetterboxBehavior() \|\| !isHorizontalReachabilityEnabled()
		\|\| mActivityRecord.isInTransition()) {
		return;
		}

		@@ -341,7 +378,9 @@ final class LetterboxUiController {
		}

		private void handleVerticalDoubleTap(int y) {
		if (!isVerticalReachabilityEnabled() \|\| mActivityRecord.isInTransition()) {
		// TODO(b/260857308): Investigate if enabling reachability for translucent activity
		if (hasInheritedLetterboxBehavior() \|\| !isVerticalReachabilityEnabled()
		\|\| mActivityRecord.isInTransition()) {
		return;
		}

		@@ -390,7 +429,7 @@ final class LetterboxUiController {
		&& parentConfiguration.windowConfiguration.getWindowingMode()
		== WINDOWING_MODE_FULLSCREEN
		&& (parentConfiguration.orientation == ORIENTATION_LANDSCAPE
		&& mActivityRecord.getRequestedConfigurationOrientation() == ORIENTATION_PORTRAIT);
		&& mActivityRecord.getOrientationForReachability() == ORIENTATION_PORTRAIT);
		}

		private boolean isHorizontalReachabilityEnabled() {
		@@ -412,7 +451,7 @@ final class LetterboxUiController {
		&& parentConfiguration.windowConfiguration.getWindowingMode()
		== WINDOWING_MODE_FULLSCREEN
		&& (parentConfiguration.orientation == ORIENTATION_PORTRAIT
		&& mActivityRecord.getRequestedConfigurationOrientation() == ORIENTATION_LANDSCAPE);
		&& mActivityRecord.getOrientationForReachability() == ORIENTATION_LANDSCAPE);
		}

		private boolean isVerticalReachabilityEnabled() {
		@@ -576,9 +615,7 @@ final class LetterboxUiController {
		// Rounded corners should be displayed above the taskbar.
		bounds.bottom =
		Math.min(bounds.bottom, getTaskbarInsetsSource(mainWindow).getFrame().top);
		if (mActivityRecord.inSizeCompatMode() && mActivityRecord.getCompatScale() < 1.0f) {
		bounds.scale(1.0f / mActivityRecord.getCompatScale());
		}
		scaleIfNeeded(bounds);
		}

		private int getInsetsStateCornerRadius(
		@@ -788,4 +825,144 @@ final class LetterboxUiController {
		w.mAttrs.insetsFlags.appearance
		);
		}

		/**
		* Handles translucent activities letterboxing inheriting constraints from the
		* first opaque activity beneath.
		* @param parent The parent container.
		*/
		void onActivityParentChanged(WindowContainer<?> parent) {
		if (!mLetterboxConfiguration.isTranslucentLetterboxingEnabled()) {
		return;
		}
		if (mLetterboxConfigListener != null) {
		mLetterboxConfigListener.onRemoved();
		clearInheritedConfig();
		}
		// In case mActivityRecord.getCompatDisplayInsets() is not null we don't apply the
		// opaque activity constraints because we're expecting the activity is already letterboxed.
		if (mActivityRecord.getTask() == null \|\| mActivityRecord.getCompatDisplayInsets() != null
		\|\| mActivityRecord.fillsParent()) {
		return;
		}
		final ActivityRecord firstOpaqueActivityBeneath = mActivityRecord.getTask().getActivity(
		ActivityRecord::fillsParent, mActivityRecord, false /* includeBoundary */,
		true /* traverseTopToBottom */);
		if (firstOpaqueActivityBeneath == null
		\|\| mActivityRecord.launchedFromUid != firstOpaqueActivityBeneath.getUid()) {
		// We skip letterboxing if the translucent activity doesn't have any opaque
		// activities beneath of if it's launched from a different user (e.g. notification)
		return;
		}
		inheritConfiguration(firstOpaqueActivityBeneath);
		mLetterboxConfigListener = WindowContainer.overrideConfigurationPropagation(
		mActivityRecord, firstOpaqueActivityBeneath,
		(opaqueConfig, transparentConfig) -> {
		final Configuration mutatedConfiguration = new Configuration();
		final Rect parentBounds = parent.getWindowConfiguration().getBounds();
		final Rect bounds = mutatedConfiguration.windowConfiguration.getBounds();
		final Rect letterboxBounds = opaqueConfig.windowConfiguration.getBounds();
		// We cannot use letterboxBounds directly here because the position relies on
		// letterboxing. Using letterboxBounds directly, would produce a double offset.
		bounds.set(parentBounds.left, parentBounds.top,
		parentBounds.left + letterboxBounds.width(),
		parentBounds.top + letterboxBounds.height());
		// We need to initialize appBounds to avoid NPE. The actual value will
		// be set ahead when resolving the Configuration for the activity.
		mutatedConfiguration.windowConfiguration.setAppBounds(new Rect());
		return mutatedConfiguration;
		});
		}

		/**
		* @return {@code true} if the current activity is translucent with an opaque activity
		* beneath. In this case it will inherit bounds, orientation and aspect ratios from
		* the first opaque activity beneath.
		*/
		boolean hasInheritedLetterboxBehavior() {
		return mLetterboxConfigListener != null && !mActivityRecord.matchParentBounds();
		}

		/**
		* @return {@code true} if the current activity is translucent with an opaque activity
		* beneath and needs to inherit its orientation.
		*/
		boolean hasInheritedOrientation() {
		// To force a different orientation, the transparent one needs to have an explicit one
		// otherwise the existing one is fine and the actual orientation will depend on the
		// bounds.
		// To avoid wrong behaviour, we're not forcing orientation for activities with not
		// fixed orientation (e.g. permission dialogs).
		return hasInheritedLetterboxBehavior()
		&& mActivityRecord.mOrientation != SCREEN_ORIENTATION_UNSPECIFIED;
		}

		float getInheritedMinAspectRatio() {
		return mInheritedMinAspectRatio;
		}

		float getInheritedMaxAspectRatio() {
		return mInheritedMaxAspectRatio;
		}

		int getInheritedAppCompatState() {
		return mInheritedAppCompatState;
		}

		float getInheritedSizeCompatScale() {
		return mInheritedSizeCompatScale;
		}

		@Configuration.Orientation
		int getInheritedOrientation() {
		return mInheritedOrientation;
		}

		public ActivityRecord.CompatDisplayInsets getInheritedCompatDisplayInsets() {
		return mInheritedCompatDisplayInsets;
		}

		private void inheritConfiguration(ActivityRecord firstOpaque) {
		// To avoid wrong behaviour, we're not forcing a specific aspet ratio to activities
		// which are not already providing one (e.g. permission dialogs) and presumably also
		// not resizable.
		if (mActivityRecord.getMinAspectRatio() != UNDEFINED_ASPECT_RATIO) {
		mInheritedMinAspectRatio = firstOpaque.getMinAspectRatio();
		}
		if (mActivityRecord.getMaxAspectRatio() != UNDEFINED_ASPECT_RATIO) {
		mInheritedMaxAspectRatio = firstOpaque.getMaxAspectRatio();
		}
		mInheritedOrientation = firstOpaque.getRequestedConfigurationOrientation();
		mInheritedAppCompatState = firstOpaque.getAppCompatState();
		mIsInheritedInSizeCompatMode = firstOpaque.inSizeCompatMode();
		mInheritedSizeCompatScale = firstOpaque.getCompatScale();
		mInheritedCompatDisplayInsets = firstOpaque.getCompatDisplayInsets();
		}

		private void clearInheritedConfig() {
		mLetterboxConfigListener = null;
		mInheritedMinAspectRatio = UNDEFINED_ASPECT_RATIO;
		mInheritedMaxAspectRatio = UNDEFINED_ASPECT_RATIO;
		mInheritedOrientation = Configuration.ORIENTATION_UNDEFINED;
		mInheritedAppCompatState = APP_COMPAT_STATE_CHANGED__STATE__UNKNOWN;
		mIsInheritedInSizeCompatMode = false;
		mInheritedSizeCompatScale = 1f;
		mInheritedCompatDisplayInsets = null;
		}

		private void scaleIfNeeded(Rect bounds) {
		if (boundsNeedToScale()) {
		bounds.scale(1.0f / mActivityRecord.getCompatScale());
		}
		}

		private boolean boundsNeedToScale() {
		if (hasInheritedLetterboxBehavior()) {
		return mIsInheritedInSizeCompatMode
		&& mInheritedSizeCompatScale < 1.0f;
		} else {
		return mActivityRecord.inSizeCompatMode()
		&& mActivityRecord.getCompatScale() < 1.0f;
		}
		}
		}