| /* |
| * Copyright (C) 2020 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.systemui.stackdivider; |
| |
| import static android.app.WindowConfiguration.ACTIVITY_TYPE_HOME; |
| import static android.app.WindowConfiguration.ACTIVITY_TYPE_RECENTS; |
| import static android.app.WindowConfiguration.ACTIVITY_TYPE_UNDEFINED; |
| import static android.app.WindowConfiguration.WINDOWING_MODE_SPLIT_SCREEN_PRIMARY; |
| import static android.app.WindowConfiguration.WINDOWING_MODE_SPLIT_SCREEN_SECONDARY; |
| import static android.view.Display.DEFAULT_DISPLAY; |
| |
| import android.app.ActivityManager.RunningTaskInfo; |
| import android.app.ITaskOrganizerController; |
| import android.app.WindowConfiguration; |
| import android.os.RemoteException; |
| import android.util.Log; |
| import android.view.Display; |
| import android.view.ITaskOrganizer; |
| import android.view.IWindowContainer; |
| import android.view.SurfaceControl; |
| import android.view.SurfaceSession; |
| |
| class SplitScreenTaskOrganizer extends ITaskOrganizer.Stub { |
| private static final String TAG = "SplitScreenTaskOrganizer"; |
| private static final boolean DEBUG = Divider.DEBUG; |
| |
| RunningTaskInfo mPrimary; |
| RunningTaskInfo mSecondary; |
| SurfaceControl mPrimarySurface; |
| SurfaceControl mSecondarySurface; |
| SurfaceControl mPrimaryDim; |
| SurfaceControl mSecondaryDim; |
| final Divider mDivider; |
| |
| SplitScreenTaskOrganizer(Divider divider) { |
| mDivider = divider; |
| } |
| |
| void init(ITaskOrganizerController organizerController, SurfaceSession session) |
| throws RemoteException { |
| organizerController.registerTaskOrganizer(this, WINDOWING_MODE_SPLIT_SCREEN_PRIMARY); |
| organizerController.registerTaskOrganizer(this, WINDOWING_MODE_SPLIT_SCREEN_SECONDARY); |
| mPrimary = organizerController.createRootTask(Display.DEFAULT_DISPLAY, |
| WindowConfiguration.WINDOWING_MODE_SPLIT_SCREEN_PRIMARY); |
| mSecondary = organizerController.createRootTask(Display.DEFAULT_DISPLAY, |
| WindowConfiguration.WINDOWING_MODE_SPLIT_SCREEN_SECONDARY); |
| mPrimarySurface = mPrimary.token.getLeash(); |
| mSecondarySurface = mSecondary.token.getLeash(); |
| |
| // Initialize dim surfaces: |
| mPrimaryDim = new SurfaceControl.Builder(session).setParent(mPrimarySurface) |
| .setColorLayer().setName("Primary Divider Dim").build(); |
| mSecondaryDim = new SurfaceControl.Builder(session).setParent(mSecondarySurface) |
| .setColorLayer().setName("Secondary Divider Dim").build(); |
| SurfaceControl.Transaction t = getTransaction(); |
| t.setLayer(mPrimaryDim, Integer.MAX_VALUE); |
| t.setColor(mPrimaryDim, new float[]{0f, 0f, 0f}); |
| t.setLayer(mSecondaryDim, Integer.MAX_VALUE); |
| t.setColor(mSecondaryDim, new float[]{0f, 0f, 0f}); |
| t.apply(); |
| releaseTransaction(t); |
| } |
| |
| SurfaceControl.Transaction getTransaction() { |
| return mDivider.mTransactionPool.acquire(); |
| } |
| |
| void releaseTransaction(SurfaceControl.Transaction t) { |
| mDivider.mTransactionPool.release(t); |
| } |
| |
| @Override |
| public void taskAppeared(RunningTaskInfo taskInfo) { |
| } |
| |
| @Override |
| public void taskVanished(IWindowContainer container) { |
| } |
| |
| @Override |
| public void transactionReady(int id, SurfaceControl.Transaction t) { |
| } |
| |
| @Override |
| public void onTaskInfoChanged(RunningTaskInfo taskInfo) { |
| if (taskInfo.displayId != DEFAULT_DISPLAY) { |
| return; |
| } |
| mDivider.getHandler().post(() -> handleTaskInfoChanged(taskInfo)); |
| } |
| |
| /** |
| * This is effectively a finite state machine which moves between the various split-screen |
| * presentations based on the contents of the split regions. |
| */ |
| private void handleTaskInfoChanged(RunningTaskInfo info) { |
| final boolean primaryWasEmpty = mPrimary.topActivityType == ACTIVITY_TYPE_UNDEFINED; |
| final boolean secondaryWasEmpty = mSecondary.topActivityType == ACTIVITY_TYPE_UNDEFINED; |
| if (info.token.asBinder() == mPrimary.token.asBinder()) { |
| mPrimary = info; |
| } else if (info.token.asBinder() == mSecondary.token.asBinder()) { |
| mSecondary = info; |
| } |
| final boolean primaryIsEmpty = mPrimary.topActivityType == ACTIVITY_TYPE_UNDEFINED; |
| final boolean secondaryIsEmpty = mSecondary.topActivityType == ACTIVITY_TYPE_UNDEFINED; |
| if (DEBUG) { |
| Log.d(TAG, "onTaskInfoChanged " + mPrimary + " " + mSecondary); |
| } |
| if (primaryIsEmpty || secondaryIsEmpty) { |
| // At-least one of the splits is empty which means we are currently transitioning |
| // into or out-of split-screen mode. |
| if (DEBUG) { |
| Log.d(TAG, " at-least one split empty " + mPrimary.topActivityType |
| + " " + mSecondary.topActivityType); |
| } |
| if (mDivider.inSplitMode()) { |
| // Was in split-mode, which means we are leaving split, so continue that. |
| // This happens when the stack in the primary-split is dismissed. |
| if (DEBUG) { |
| Log.d(TAG, " was in split, so this means leave it " |
| + mPrimary.topActivityType + " " + mSecondary.topActivityType); |
| } |
| WindowManagerProxy.applyDismissSplit(this, true /* dismissOrMaximize */); |
| mDivider.updateVisibility(false /* visible */); |
| } else if (!primaryIsEmpty && primaryWasEmpty && secondaryWasEmpty) { |
| // Wasn't in split-mode (both were empty), but now that the primary split is |
| // populated, we should fully enter split by moving everything else into secondary. |
| // This just tells window-manager to reparent things, the UI will respond |
| // when it gets new task info for the secondary split. |
| if (DEBUG) { |
| Log.d(TAG, " was not in split, but primary is populated, so enter it"); |
| } |
| mDivider.startEnterSplit(); |
| } |
| } else if (mSecondary.topActivityType == ACTIVITY_TYPE_HOME |
| || mSecondary.topActivityType == ACTIVITY_TYPE_RECENTS) { |
| // Both splits are populated but the secondary split has a home/recents stack on top, |
| // so enter minimized mode. |
| mDivider.ensureMinimizedSplit(); |
| } else { |
| // Both splits are populated by normal activities, so make sure we aren't minimized. |
| mDivider.ensureNormalSplit(); |
| } |
| } |
| } |