[PiP on Desktop] Minimizing last task to PiP should exit Desktop (148cfd94) · Commits · e / os / android_frameworks_base

libs/WindowManager/Shell/src/com/android/wm/shell/dagger/WMShellModule.java

+18 −0

Original line number	Diff line number	Diff line
		@@ -98,6 +98,7 @@ import com.android.wm.shell.desktopmode.DesktopModeKeyGestureHandler;
		import com.android.wm.shell.desktopmode.DesktopModeLoggerTransitionObserver;
		import com.android.wm.shell.desktopmode.DesktopModeMoveToDisplayTransitionHandler;
		import com.android.wm.shell.desktopmode.DesktopModeUiEventLogger;
		import com.android.wm.shell.desktopmode.DesktopPipTransitionObserver;
		import com.android.wm.shell.desktopmode.DesktopTaskChangeListener;
		import com.android.wm.shell.desktopmode.DesktopTasksController;
		import com.android.wm.shell.desktopmode.DesktopTasksLimiter;
		@@ -778,6 +779,7 @@ public abstract class WMShellModule {
		OverviewToDesktopTransitionObserver overviewToDesktopTransitionObserver,
		DesksOrganizer desksOrganizer,
		Optional<DesksTransitionObserver> desksTransitionObserver,
		Optional<DesktopPipTransitionObserver> desktopPipTransitionObserver,
		UserProfileContexts userProfileContexts,
		DesktopModeCompatPolicy desktopModeCompatPolicy,
		DragToDisplayTransitionHandler dragToDisplayTransitionHandler,
		@@ -820,6 +822,7 @@ public abstract class WMShellModule {
		overviewToDesktopTransitionObserver,
		desksOrganizer,
		desksTransitionObserver.get(),
		desktopPipTransitionObserver.get(),
		userProfileContexts,
		desktopModeCompatPolicy,
		dragToDisplayTransitionHandler,
		@@ -1211,6 +1214,7 @@ public abstract class WMShellModule {
		Transitions transitions,
		ShellTaskOrganizer shellTaskOrganizer,
		Optional<DesktopMixedTransitionHandler> desktopMixedTransitionHandler,
		Optional<DesktopPipTransitionObserver> desktopPipTransitionObserver,
		Optional<BackAnimationController> backAnimationController,
		DesktopWallpaperActivityTokenProvider desktopWallpaperActivityTokenProvider,
		ShellInit shellInit) {
		@@ -1223,6 +1227,7 @@ public abstract class WMShellModule {
		transitions,
		shellTaskOrganizer,
		desktopMixedTransitionHandler.get(),
		desktopPipTransitionObserver.get(),
		backAnimationController.get(),
		desktopWallpaperActivityTokenProvider,
		shellInit)));
		@@ -1242,6 +1247,19 @@ public abstract class WMShellModule {
		return Optional.empty();
		}

		@WMSingleton
		@Provides
		static Optional<DesktopPipTransitionObserver> provideDesktopPipTransitionObserver(
		Context context
		) {
		if (DesktopModeStatus.canEnterDesktopMode(context)
		&& DesktopModeFlags.ENABLE_DESKTOP_WINDOWING_PIP.isTrue()) {
		return Optional.of(
		new DesktopPipTransitionObserver());
		}
		return Optional.empty();
		}

		@WMSingleton
		@Provides
		static Optional<DesktopMixedTransitionHandler> provideDesktopMixedTransitionHandler(

libs/WindowManager/Shell/src/com/android/wm/shell/desktopmode/DesktopPipTransitionObserver.kt

0 → 100644

+81 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2025 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.desktopmode

		import android.app.WindowConfiguration.WINDOWING_MODE_PINNED
		import android.os.IBinder
		import android.window.DesktopModeFlags
		import android.window.TransitionInfo
		import com.android.internal.protolog.ProtoLog
		import com.android.wm.shell.protolog.ShellProtoLogGroup.WM_SHELL_DESKTOP_MODE

		/**
		* Observer of PiP in Desktop Mode transitions. At the moment, this is specifically tracking a PiP
		* transition for a task that is entering PiP via the minimize button on the caption bar.
		*/
		class DesktopPipTransitionObserver {
		private val pendingPipTransitions = mutableMapOf<IBinder, PendingPipTransition>()

		/** Adds a pending PiP transition to be tracked. */
		fun addPendingPipTransition(transition: PendingPipTransition) {
		if (!DesktopModeFlags.ENABLE_DESKTOP_WINDOWING_PIP.isTrue) return
		pendingPipTransitions[transition.token] = transition
		}

		/**
		* Called when any transition is ready, which may include transitions not tracked by this
		* observer.
		*/
		fun onTransitionReady(transition: IBinder, info: TransitionInfo) {
		if (!DesktopModeFlags.ENABLE_DESKTOP_WINDOWING_PIP.isTrue) return
		val pipTransition = pendingPipTransitions.remove(transition) ?: return

		logD("Desktop PiP transition ready: %s", transition)
		for (change in info.changes) {
		val taskInfo = change.taskInfo
		if (taskInfo == null \|\| taskInfo.taskId == -1) {
		continue
		}

		if (
		taskInfo.taskId == pipTransition.taskId &&
		taskInfo.windowingMode == WINDOWING_MODE_PINNED
		) {
		logD("Desktop PiP transition was successful")
		pipTransition.onSuccess()
		return
		}
		}
		logD("Change with PiP task not found in Desktop PiP transition; likely failed")
		}

		/**
		* Data tracked for a pending PiP transition.
		*
		* @property token the PiP transition that is started.
		* @property taskId task id of the task entering PiP.
		* @property onSuccess callback to be invoked if the PiP transition is successful.
		*/
		data class PendingPipTransition(val token: IBinder, val taskId: Int, val onSuccess: () -> Unit)

		private fun logD(msg: String, vararg arguments: Any?) {
		ProtoLog.d(WM_SHELL_DESKTOP_MODE, "%s: $msg", TAG, *arguments)
		}

		private companion object {
		private const val TAG = "DesktopPipTransitionObserver"
		}
		}

libs/WindowManager/Shell/src/com/android/wm/shell/desktopmode/DesktopRepository.kt

+0 −58

Original line number	Diff line number	Diff line
		@@ -68,7 +68,6 @@ class DesktopRepository(
		* @property topTransparentFullscreenTaskId the task id of any current top transparent
		* fullscreen task launched on top of the desk. Cleared when the transparent task is closed or
		* sent to back. (top is at index 0).
		* @property pipTaskId the task id of PiP task entered while in Desktop Mode.
		*/
		private data class Desk(
		val deskId: Int,
		@@ -81,7 +80,6 @@ class DesktopRepository(
		val freeformTasksInZOrder: ArrayList<Int> = ArrayList(),
		var fullImmersiveTaskId: Int? = null,
		var topTransparentFullscreenTaskId: Int? = null,
		var pipTaskId: Int? = null,
		) {
		fun deepCopy(): Desk =
		Desk(
		@@ -94,7 +92,6 @@ class DesktopRepository(
		freeformTasksInZOrder = ArrayList(freeformTasksInZOrder),
		fullImmersiveTaskId = fullImmersiveTaskId,
		topTransparentFullscreenTaskId = topTransparentFullscreenTaskId,
		pipTaskId = pipTaskId,
		)

		// TODO: b/362720497 - remove when multi-desktops is enabled where instances aren't
		@@ -107,7 +104,6 @@ class DesktopRepository(
		freeformTasksInZOrder.clear()
		fullImmersiveTaskId = null
		topTransparentFullscreenTaskId = null
		pipTaskId = null
		}
		}

		@@ -127,9 +123,6 @@ class DesktopRepository(
		/* Tracks last bounds of task before toggled to immersive state. */
		private val boundsBeforeFullImmersiveByTaskId = SparseArray<Rect>()

		/* Callback for when a pending PiP transition has been aborted. */
		private var onPipAbortedCallback: ((Int, Int) -> Unit)? = null

		private var desktopGestureExclusionListener: Consumer<Region>? = null
		private var desktopGestureExclusionExecutor: Executor? = null

		@@ -610,57 +603,6 @@ class DesktopRepository(
		}
		}

		/**
		* Set whether the given task is the Desktop-entered PiP task in this display's active desk.
		*
		* TODO: b/389960283 - add explicit [deskId] argument.
		*/
		fun setTaskInPip(displayId: Int, taskId: Int, enterPip: Boolean) {
		val activeDesk =
		desktopData.getActiveDesk(displayId)
		?: error("Expected active desk in display: $displayId")
		if (enterPip) {
		activeDesk.pipTaskId = taskId
		} else {
		activeDesk.pipTaskId =
		if (activeDesk.pipTaskId == taskId) null
		else {
		logW(
		"setTaskInPip: taskId=%d did not match saved taskId=%d",
		taskId,
		activeDesk.pipTaskId,
		)
		activeDesk.pipTaskId
		}
		}
		}

		/**
		* Returns whether the given task is the Desktop-entered PiP task in this display's active desk.
		*
		* TODO: b/389960283 - add explicit [deskId] argument.
		*/
		fun isTaskMinimizedPipInDisplay(displayId: Int, taskId: Int): Boolean =
		desktopData.getActiveDesk(displayId)?.pipTaskId == taskId

		/**
		* Saves callback to handle a pending PiP transition being aborted.
		*
		* TODO: b/389960283 - add explicit [deskId] argument.
		*/
		fun setOnPipAbortedCallback(callbackIfPipAborted: ((displayId: Int, pipTaskId: Int) -> Unit)?) {
		onPipAbortedCallback = callbackIfPipAborted
		}

		/**
		* Invokes callback to handle a pending PiP transition with the given task id being aborted.
		*
		* TODO: b/389960283 - add explicit [deskId] argument.
		*/
		fun onPipAborted(displayId: Int, pipTaskId: Int) {
		onPipAbortedCallback?.invoke(displayId, pipTaskId)
		}

		/**
		* Set whether the given task is the full-immersive task in this display's active desk.
		*

libs/WindowManager/Shell/src/com/android/wm/shell/desktopmode/DesktopTasksController.kt

+100 −63

Original line number	Diff line number	Diff line
		@@ -208,6 +208,7 @@ class DesktopTasksController(
		private val overviewToDesktopTransitionObserver: OverviewToDesktopTransitionObserver,
		private val desksOrganizer: DesksOrganizer,
		private val desksTransitionObserver: DesksTransitionObserver,
		private val desktopPipTransitionObserver: DesktopPipTransitionObserver,
		private val userProfileContexts: UserProfileContexts,
		private val desktopModeCompatPolicy: DesktopModeCompatPolicy,
		private val dragToDisplayTransitionHandler: DragToDisplayTransitionHandler,
		@@ -764,10 +765,30 @@ class DesktopTasksController(

		fun minimizeTask(taskInfo: RunningTaskInfo, minimizeReason: MinimizeReason) {
		val wct = WindowContainerTransaction()

		val taskId = taskInfo.taskId
		val displayId = taskInfo.displayId
		val deskId =
		taskRepository.getDeskIdForTask(taskInfo.taskId)
		?: if (DesktopExperienceFlags.ENABLE_MULTIPLE_DESKTOPS_BACKEND.isTrue) {
		logW("minimizeTask: desk not found for task: ${taskInfo.taskId}")
		return
		} else {
		getDefaultDeskId(taskInfo.displayId)
		}
		val isLastTask =
		if (DesktopExperienceFlags.ENABLE_MULTIPLE_DESKTOPS_BACKEND.isTrue) {
		taskRepository.isOnlyVisibleNonClosingTaskInDesk(
		taskId = taskId,
		deskId = checkNotNull(deskId) { "Expected non-null deskId" },
		displayId = displayId,
		)
		} else {
		taskRepository.isOnlyVisibleNonClosingTask(taskId = taskId, displayId = displayId)
		}
		val isMinimizingToPip =
		DesktopModeFlags.ENABLE_DESKTOP_WINDOWING_PIP.isTrue &&
		(taskInfo.pictureInPictureParams?.isAutoEnterEnabled() ?: false)
		(taskInfo.pictureInPictureParams?.isAutoEnterEnabled ?: false)

		// If task is going to PiP, start a PiP transition instead of a minimize transition
		if (isMinimizingToPip) {
		val requestInfo =
		@@ -781,28 +802,22 @@ class DesktopTasksController(
		)
		val requestRes = transitions.dispatchRequest(Binder(), requestInfo, /* skip= */ null)
		wct.merge(requestRes.second, true)
		freeformTaskTransitionStarter.startPipTransition(wct)
		taskRepository.setTaskInPip(taskInfo.displayId, taskInfo.taskId, enterPip = true)
		taskRepository.setOnPipAbortedCallback { displayId, taskId ->
		minimizeTaskInner(shellTaskOrganizer.getRunningTaskInfo(taskId)!!, minimizeReason)
		taskRepository.setTaskInPip(displayId, taskId, enterPip = false)
		}
		return
		}

		minimizeTaskInner(taskInfo, minimizeReason)
		}

		private fun minimizeTaskInner(taskInfo: RunningTaskInfo, minimizeReason: MinimizeReason) {
		val taskId = taskInfo.taskId
		val deskId = taskRepository.getDeskIdForTask(taskInfo.taskId)
		if (deskId == null && DesktopExperienceFlags.ENABLE_MULTIPLE_DESKTOPS_BACKEND.isTrue) {
		logW("minimizeTaskInner: desk not found for task: ${taskInfo.taskId}")
		return
		}
		val displayId = taskInfo.displayId
		val wct = WindowContainerTransaction()

		desktopPipTransitionObserver.addPendingPipTransition(
		DesktopPipTransitionObserver.PendingPipTransition(
		token = freeformTaskTransitionStarter.startPipTransition(wct),
		taskId = taskInfo.taskId,
		onSuccess = {
		onDesktopTaskEnteredPip(
		taskId = taskId,
		deskId = deskId,
		displayId = taskInfo.displayId,
		taskIsLastVisibleTaskBeforePip = isLastTask,
		)
		},
		)
		)
		} else {
		snapEventHandler.removeTaskIfTiled(displayId, taskId)
		val willExitDesktop = willExitDesktop(taskId, displayId, forceExitDesktop = false)
		val desktopExitRunnable =
		@@ -828,16 +843,6 @@ class DesktopTasksController(
		} else {
		wct.reorder(taskInfo.token, /* onTop= */ false)
		}
		val isLastTask =
		if (DesktopExperienceFlags.ENABLE_MULTIPLE_DESKTOPS_BACKEND.isTrue) {
		taskRepository.isOnlyVisibleNonClosingTaskInDesk(
		taskId = taskId,
		deskId = checkNotNull(deskId) { "Expected non-null deskId" },
		displayId = displayId,
		)
		} else {
		taskRepository.isOnlyVisibleNonClosingTask(taskId = taskId, displayId = displayId)
		}
		val transition =
		freeformTaskTransitionStarter.startMinimizedModeTransition(wct, taskId, isLastTask)
		desktopTasksLimiter.ifPresent {
		@@ -851,6 +856,7 @@ class DesktopTasksController(
		exitResult.asExit()?.runOnTransitionStart?.invoke(transition)
		desktopExitRunnable?.invoke(transition)
		}
		}

		/** Move a task with given `taskId` to fullscreen */
		fun moveToFullscreen(taskId: Int, transitionSource: DesktopModeTransitionSource) {
		@@ -1806,7 +1812,11 @@ class DesktopTasksController(
		displayId: Int,
		forceExitDesktop: Boolean,
		): Boolean {
		if (forceExitDesktop && DesktopExperienceFlags.ENABLE_MULTIPLE_DESKTOPS_BACKEND.isTrue) {
		if (
		forceExitDesktop &&
		(DesktopExperienceFlags.ENABLE_MULTIPLE_DESKTOPS_BACKEND.isTrue \|\|
		DesktopModeFlags.ENABLE_DESKTOP_WINDOWING_PIP.isTrue)
		) {
		// \|forceExitDesktop\| is true when the callers knows we'll exit desktop, such as when
		// explicitly going fullscreen, so there's no point in checking the desktop state.
		return true
		@@ -1823,6 +1833,33 @@ class DesktopTasksController(
		return true
		}

		/** Potentially perform Desktop cleanup after a task successfully enters PiP. */
		@VisibleForTesting
		fun onDesktopTaskEnteredPip(
		taskId: Int,
		deskId: Int,
		displayId: Int,
		taskIsLastVisibleTaskBeforePip: Boolean,
		) {
		if (
		!willExitDesktop(taskId, displayId, forceExitDesktop = taskIsLastVisibleTaskBeforePip)
		) {
		return
		}

		val wct = WindowContainerTransaction()
		val desktopExitRunnable =
		performDesktopExitCleanUp(
		wct = wct,
		deskId = deskId,
		displayId = displayId,
		willExitDesktop = true,
		)

		val transition = transitions.startTransition(TRANSIT_CHANGE, wct, /* handler= */ null)
		desktopExitRunnable?.invoke(transition)
		}

		private fun performDesktopExitCleanupIfNeeded(
		taskId: Int,
		deskId: Int? = null,

libs/WindowManager/Shell/src/com/android/wm/shell/desktopmode/DesktopTasksTransitionObserver.kt

+2 −44

Original line number	Diff line number	Diff line
		@@ -23,7 +23,6 @@ import android.os.IBinder
		import android.view.SurfaceControl
		import android.view.WindowManager.TRANSIT_CLOSE
		import android.view.WindowManager.TRANSIT_OPEN
		import android.view.WindowManager.TRANSIT_PIP
		import android.view.WindowManager.TRANSIT_TO_BACK
		import android.window.DesktopExperienceFlags
		import android.window.DesktopModeFlags
		@@ -41,8 +40,6 @@ import com.android.wm.shell.shared.TransitionUtil
		import com.android.wm.shell.shared.desktopmode.DesktopModeStatus
		import com.android.wm.shell.sysui.ShellInit
		import com.android.wm.shell.transition.Transitions
		import com.android.wm.shell.transition.Transitions.TRANSIT_EXIT_PIP
		import com.android.wm.shell.transition.Transitions.TRANSIT_REMOVE_PIP

		/**
		* A [Transitions.TransitionObserver] that observes shell transitions and updates the
		@@ -55,6 +52,7 @@ class DesktopTasksTransitionObserver(
		private val transitions: Transitions,
		private val shellTaskOrganizer: ShellTaskOrganizer,
		private val desktopMixedTransitionHandler: DesktopMixedTransitionHandler,
		private val desktopPipTransitionObserver: DesktopPipTransitionObserver,
		private val backAnimationController: BackAnimationController,
		private val desktopWallpaperActivityTokenProvider: DesktopWallpaperActivityTokenProvider,
		shellInit: ShellInit,
		@@ -63,8 +61,6 @@ class DesktopTasksTransitionObserver(
		data class CloseWallpaperTransition(val transition: IBinder, val displayId: Int)

		private var transitionToCloseWallpaper: CloseWallpaperTransition? = null
		/* Pending PiP transition and its associated display id and task id. */
		private var pendingPipTransitionAndPipTask: Triple<IBinder, Int, Int>? = null
		private var currentProfileId: Int

		init {
		@@ -98,33 +94,7 @@ class DesktopTasksTransitionObserver(
		removeTaskIfNeeded(info)
		}
		removeWallpaperOnLastTaskClosingIfNeeded(transition, info)

		val desktopRepository = desktopUserRepositories.getProfile(currentProfileId)
		info.changes.forEach { change ->
		change.taskInfo?.let { taskInfo ->
		if (
		DesktopModeFlags.ENABLE_DESKTOP_WINDOWING_PIP.isTrue &&
		desktopRepository.isTaskMinimizedPipInDisplay(
		taskInfo.displayId,
		taskInfo.taskId,
		)
		) {
		when (info.type) {
		TRANSIT_PIP ->
		pendingPipTransitionAndPipTask =
		Triple(transition, taskInfo.displayId, taskInfo.taskId)

		TRANSIT_EXIT_PIP,
		TRANSIT_REMOVE_PIP ->
		desktopRepository.setTaskInPip(
		taskInfo.displayId,
		taskInfo.taskId,
		enterPip = false,
		)
		}
		}
		}
		}
		desktopPipTransitionObserver.onTransitionReady(transition, info)
		}

		private fun removeTaskIfNeeded(info: TransitionInfo) {
		@@ -299,18 +269,6 @@ class DesktopTasksTransitionObserver(
		}
		}
		transitionToCloseWallpaper = null
		} else if (pendingPipTransitionAndPipTask?.first == transition) {
		val desktopRepository = desktopUserRepositories.getProfile(currentProfileId)
		if (aborted) {
		pendingPipTransitionAndPipTask?.let {
		desktopRepository.onPipAborted(
		/displayId=/ it.second,
		/* taskId=*/ it.third,
		)
		}
		}
		desktopRepository.setOnPipAbortedCallback(null)
		pendingPipTransitionAndPipTask = null
		}
		}