[11/n] Implement LetterboxController for multiple surfaces (651542d0) · Commits · e / os / android_frameworks_base

core/java/android/app/AppCompatTaskInfo.java

+12 −0

Original line number	Diff line number	Diff line
		@@ -21,6 +21,7 @@ import static android.app.TaskInfo.PROPERTY_VALUE_UNSET;
		import android.annotation.IntDef;
		import android.annotation.NonNull;
		import android.annotation.Nullable;
		import android.graphics.Rect;
		import android.os.Parcel;
		import android.os.Parcelable;

		@@ -68,6 +69,14 @@ public class AppCompatTaskInfo implements Parcelable {
		*/
		public int topActivityLetterboxAppWidth = PROPERTY_VALUE_UNSET;

		/**
		* Contains the top activity bounds when the activity is letterboxed.
		* It's {@code null} if there's no top activity in the task or it's not letterboxed.
		*/
		// TODO(b/379824541) Remove duplicate information.
		@Nullable
		public Rect topActivityLetterboxBounds;

		/**
		* Stores camera-related app compat information about a particular Task.
		*/
		@@ -378,6 +387,7 @@ public class AppCompatTaskInfo implements Parcelable {
		topActivityLetterboxHeight = source.readInt();
		topActivityLetterboxAppWidth = source.readInt();
		topActivityLetterboxAppHeight = source.readInt();
		topActivityLetterboxBounds = source.readTypedObject(Rect.CREATOR);
		cameraCompatTaskInfo = source.readTypedObject(CameraCompatTaskInfo.CREATOR);
		}

		@@ -393,6 +403,7 @@ public class AppCompatTaskInfo implements Parcelable {
		dest.writeInt(topActivityLetterboxHeight);
		dest.writeInt(topActivityLetterboxAppWidth);
		dest.writeInt(topActivityLetterboxAppHeight);
		dest.writeTypedObject(topActivityLetterboxBounds, flags);
		dest.writeTypedObject(cameraCompatTaskInfo, flags);
		}

		@@ -415,6 +426,7 @@ public class AppCompatTaskInfo implements Parcelable {
		+ " isUserFullscreenOverrideEnabled=" + isUserFullscreenOverrideEnabled()
		+ " isSystemFullscreenOverrideEnabled=" + isSystemFullscreenOverrideEnabled()
		+ " hasMinAspectRatioOverride=" + hasMinAspectRatioOverride()
		+ " topActivityLetterboxBounds=" + topActivityLetterboxBounds
		+ " cameraCompatTaskInfo=" + cameraCompatTaskInfo.toString()
		+ "}";
		}

libs/WindowManager/Shell/src/com/android/wm/shell/compatui/letterbox/LetterboxController.kt

+2 −1

Original line number	Diff line number	Diff line
		@@ -58,7 +58,8 @@ interface LetterboxController {
		fun updateLetterboxSurfaceBounds(
		key: LetterboxKey,
		transaction: Transaction,
		taskBounds: Rect
		taskBounds: Rect,
		activityBounds: Rect
		)

		/**

libs/WindowManager/Shell/src/com/android/wm/shell/compatui/letterbox/LetterboxData.kt

+14 −1

Original line number	Diff line number	Diff line
		@@ -16,5 +16,18 @@

		package com.android.wm.shell.compatui.letterbox

		import android.view.SurfaceControl

		// The key to use for identify the letterbox sessions.
		data class LetterboxKey(val displayId: Int, val taskId: Int)

		// Encapsulates the surfaces in the multiple surfaces scenario.
		data class LetterboxSurfaces(
		var leftSurface: SurfaceControl? = null,
		var topSurface: SurfaceControl? = null,
		var rightSurface: SurfaceControl? = null,
		var bottomSurface: SurfaceControl? = null
		) : Iterable<SurfaceControl?> {
		override fun iterator() =
		listOf(leftSurface, topSurface, rightSurface, bottomSurface).iterator()
		}

libs/WindowManager/Shell/src/com/android/wm/shell/compatui/letterbox/LetterboxTransitionObserver.kt

+6 −1

Original line number	Diff line number	Diff line
		@@ -41,6 +41,8 @@ class LetterboxTransitionObserver(
		companion object {
		@JvmStatic
		private val TAG = "LetterboxTransitionObserver"
		@JvmStatic
		private val EMPTY_BOUNDS = Rect()
		}

		init {
		@@ -86,10 +88,13 @@ class LetterboxTransitionObserver(
		startTransaction,
		change.leash
		)
		val activityBounds =
		ti.appCompatTaskInfo.topActivityLetterboxBounds ?: EMPTY_BOUNDS
		updateLetterboxSurfaceBounds(
		key,
		startTransaction,
		taskBounds
		taskBounds,
		activityBounds
		)
		}
		updateLetterboxSurfaceVisibility(

libs/WindowManager/Shell/src/com/android/wm/shell/compatui/letterbox/MultiSurfaceLetterboxController.kt

0 → 100644

+176 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright 2024 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package com.android.wm.shell.compatui.letterbox

		import android.graphics.Rect
		import android.view.SurfaceControl
		import android.view.SurfaceControl.Transaction
		import com.android.internal.protolog.ProtoLog
		import com.android.wm.shell.dagger.WMSingleton
		import com.android.wm.shell.protolog.ShellProtoLogGroup.WM_SHELL_APP_COMPAT
		import javax.inject.Inject

		/**
		* Component responsible for handling the lifecycle of multiple letterbox surfaces when needed.
		*/
		@WMSingleton
		class MultiSurfaceLetterboxController @Inject constructor(
		private val letterboxBuilder: LetterboxSurfaceBuilder
		) : LetterboxController {

		companion object {
		@JvmStatic
		private val TAG = "MultiSurfaceLetterboxController"
		}

		private val letterboxMap = mutableMapOf<LetterboxKey, LetterboxSurfaces>()

		override fun createLetterboxSurface(
		key: LetterboxKey,
		transaction: Transaction,
		parentLeash: SurfaceControl
		) {
		val surfaceBuilderFn = { position: String ->
		letterboxBuilder.createSurface(
		transaction,
		parentLeash,
		"ShellLetterboxSurface-$key-$position",
		"MultiSurfaceLetterboxController#createLetterboxSurface"
		)
		}
		letterboxMap.runOnItem(key, onMissed = { k, m ->
		m[k] = LetterboxSurfaces(
		leftSurface = surfaceBuilderFn("Left"),
		topSurface = surfaceBuilderFn("Top"),
		rightSurface = surfaceBuilderFn("Right"),
		bottomSurface = surfaceBuilderFn("Bottom"),
		)
		})
		}

		override fun destroyLetterboxSurface(
		key: LetterboxKey,
		transaction: Transaction
		) {
		letterboxMap.runOnItem(key, onFound = { item ->
		item.forEach { s ->
		s.remove(transaction)
		}
		})
		letterboxMap.remove(key)
		}

		override fun updateLetterboxSurfaceVisibility(
		key: LetterboxKey,
		transaction: Transaction,
		visible: Boolean
		) {
		letterboxMap.runOnItem(key, onFound = { item ->
		item.forEach { s ->
		s.setVisibility(transaction, visible)
		}
		})
		}

		override fun updateLetterboxSurfaceBounds(
		key: LetterboxKey,
		transaction: Transaction,
		taskBounds: Rect,
		activityBounds: Rect
		) {
		letterboxMap.runOnItem(key, onFound = { item ->
		item.updateSurfacesBounds(transaction, taskBounds, activityBounds)
		})
		}

		override fun dump() {
		ProtoLog.v(WM_SHELL_APP_COMPAT, "%s: %s", TAG, "${letterboxMap.keys}")
		}

		/*
		* Executes [onFound] on the [LetterboxItem] if present or [onMissed] if not present.
		*/
		private fun MutableMap<LetterboxKey, LetterboxSurfaces>.runOnItem(
		key: LetterboxKey,
		onFound: (LetterboxSurfaces) -> Unit = { _ -> },
		onMissed: (
		LetterboxKey,
		MutableMap<LetterboxKey, LetterboxSurfaces>
		) -> Unit = { _, _ -> }
		) {
		this[key]?.let {
		return onFound(it)
		}
		return onMissed(key, this)
		}

		private fun SurfaceControl?.remove(
		tx: Transaction
		) = this?.let {
		tx.remove(this)
		}

		private fun SurfaceControl?.setVisibility(
		tx: Transaction,
		visible: Boolean
		) = this?.let {
		tx.setVisibility(this, visible)
		}

		private fun Transaction.moveAndCrop(
		surface: SurfaceControl,
		rect: Rect
		): Transaction =
		setPosition(surface, rect.left.toFloat(), rect.top.toFloat())
		.setWindowCrop(
		surface,
		rect.width(),
		rect.height()
		)

		private fun LetterboxSurfaces.updateSurfacesBounds(
		tx: Transaction,
		taskBounds: Rect,
		activityBounds: Rect
		) {
		// Update the bounds depending on the activity position.
		leftSurface?.let { s ->
		tx.moveAndCrop(
		s,
		Rect(taskBounds.left, taskBounds.top, activityBounds.left, taskBounds.bottom)
		)
		}
		rightSurface?.let { s ->
		tx.moveAndCrop(
		s,
		Rect(activityBounds.right, taskBounds.top, taskBounds.right, taskBounds.bottom)
		)
		}
		topSurface?.let { s ->
		tx.moveAndCrop(
		s,
		Rect(taskBounds.left, taskBounds.top, taskBounds.right, activityBounds.top)
		)
		}
		bottomSurface?.let { s ->
		tx.moveAndCrop(
		s,
		Rect(taskBounds.left, activityBounds.bottom, taskBounds.right, taskBounds.bottom)
		)
		}
		}
		}