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/*
* Copyright (C) 2019 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.server.wm;
import static android.view.WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;
import static android.view.WindowManager.LayoutParams.TYPE_DOCK_DIVIDER;
import static android.view.WindowManager.SHELL_ROOT_LAYER_DIVIDER;
import static android.view.WindowManager.SHELL_ROOT_LAYER_PIP;
import static com.android.server.wm.SurfaceAnimator.ANIMATION_TYPE_WINDOW_ANIMATION;
import static com.android.server.wm.WindowManagerService.MAX_ANIMATION_DURATION;
import android.annotation.NonNull;
import android.graphics.Point;
import android.graphics.Rect;
import android.os.IBinder;
import android.os.RemoteException;
import android.util.Slog;
import android.view.DisplayInfo;
import android.view.IWindow;
import android.view.SurfaceControl;
import android.view.WindowInfo;
import android.view.WindowManager;
import android.view.animation.Animation;
/**
* Represents a piece of the hierarchy under which a client Shell can manage sub-windows.
*/
public class ShellRoot {
private static final String TAG = "ShellRoot";
private final DisplayContent mDisplayContent;
private final int mShellRootLayer;
private IWindow mClient;
private WindowToken mToken;
private final IBinder.DeathRecipient mDeathRecipient;
private SurfaceControl mSurfaceControl = null;
private IWindow mAccessibilityWindow;
private IBinder.DeathRecipient mAccessibilityWindowDeath;
private int mWindowType;
ShellRoot(@NonNull IWindow client, @NonNull DisplayContent dc,
@WindowManager.ShellRootLayer final int shellRootLayer) {
mDisplayContent = dc;
mShellRootLayer = shellRootLayer;
mDeathRecipient = () -> mDisplayContent.removeShellRoot(shellRootLayer);
try {
client.asBinder().linkToDeath(mDeathRecipient, 0);
} catch (RemoteException e) {
Slog.e(TAG, "Unable to add shell root layer " + shellRootLayer + " on display "
+ dc.getDisplayId(), e);
return;
}
mClient = client;
switch (shellRootLayer) {
case SHELL_ROOT_LAYER_DIVIDER:
mWindowType = TYPE_DOCK_DIVIDER;
break;
case SHELL_ROOT_LAYER_PIP:
mWindowType = TYPE_APPLICATION_OVERLAY;
break;
default:
throw new IllegalArgumentException(shellRootLayer
+ " is not an acceptable shell root layer.");
}
mToken = new WindowToken.Builder(dc.mWmService, client.asBinder(), mWindowType)
.setDisplayContent(dc)
.setPersistOnEmpty(true)
.setOwnerCanManageAppTokens(true)
.build();
mSurfaceControl = mToken.makeChildSurface(null)
.setContainerLayer()
.setName("Shell Root Leash " + dc.getDisplayId())
.setCallsite("ShellRoot")
.build();
mToken.getPendingTransaction().show(mSurfaceControl);
}
int getWindowType() {
return mWindowType;
}
void clear() {
if (mClient != null) {
mClient.asBinder().unlinkToDeath(mDeathRecipient, 0);
mClient = null;
}
if (mToken != null) {
mToken.removeImmediately();
mToken = null;
}
}
SurfaceControl getSurfaceControl() {
return mSurfaceControl;
}
IWindow getClient() {
return mClient;
}
void startAnimation(Animation anim) {
// Only do this for the divider
if (mToken.windowType != TYPE_DOCK_DIVIDER) {
return;
}
DisplayInfo displayInfo = mToken.getFixedRotationTransformDisplayInfo();
if (displayInfo == null) {
displayInfo = mDisplayContent.getDisplayInfo();
}
// Mostly copied from WindowState to enable keyguard transition animation
anim.initialize(displayInfo.logicalWidth, displayInfo.logicalHeight,
displayInfo.appWidth, displayInfo.appHeight);
anim.restrictDuration(MAX_ANIMATION_DURATION);
anim.scaleCurrentDuration(mDisplayContent.mWmService.getWindowAnimationScaleLocked());
final AnimationAdapter adapter = new LocalAnimationAdapter(
new WindowAnimationSpec(anim, new Point(0, 0), false /* canSkipFirstFrame */,
0 /* windowCornerRadius */),
mDisplayContent.mWmService.mSurfaceAnimationRunner);
mToken.startAnimation(mToken.getPendingTransaction(), adapter, false /* hidden */,
ANIMATION_TYPE_WINDOW_ANIMATION);
}
WindowInfo getWindowInfo() {
if (mShellRootLayer != SHELL_ROOT_LAYER_DIVIDER
&& mShellRootLayer != SHELL_ROOT_LAYER_PIP) {
return null;
}
if (mShellRootLayer == SHELL_ROOT_LAYER_DIVIDER
&& !mDisplayContent.getDefaultTaskDisplayArea().isSplitScreenModeActivated()) {
return null;
}
if (mShellRootLayer == SHELL_ROOT_LAYER_PIP
&& mDisplayContent.getDefaultTaskDisplayArea().getRootPinnedTask() == null) {
return null;
}
if (mAccessibilityWindow == null) {
return null;
}
WindowInfo windowInfo = WindowInfo.obtain();
windowInfo.displayId = mToken.getDisplayArea().getDisplayContent().mDisplayId;
windowInfo.type = mToken.windowType;
windowInfo.layer = mToken.getWindowLayerFromType();
windowInfo.token = mAccessibilityWindow.asBinder();
windowInfo.focused = false;
windowInfo.hasFlagWatchOutsideTouch = false;
final Rect regionRect = new Rect();
// DividerView
if (mShellRootLayer == SHELL_ROOT_LAYER_DIVIDER) {
windowInfo.inPictureInPicture = false;
mDisplayContent.getDockedDividerController().getTouchRegion(regionRect);
windowInfo.regionInScreen.set(regionRect);
windowInfo.title = "Splitscreen Divider";
}
// PipMenuView
if (mShellRootLayer == SHELL_ROOT_LAYER_PIP) {
windowInfo.inPictureInPicture = true;
mDisplayContent.getDefaultTaskDisplayArea().getRootPinnedTask().getBounds(regionRect);
windowInfo.regionInScreen.set(regionRect);
windowInfo.title = "Picture-in-Picture menu";
}
return windowInfo;
}
void setAccessibilityWindow(IWindow window) {
if (mAccessibilityWindow != null) {
mAccessibilityWindow.asBinder().unlinkToDeath(mAccessibilityWindowDeath, 0);
}
mAccessibilityWindow = window;
if (mAccessibilityWindow != null) {
try {
mAccessibilityWindowDeath = () -> {
synchronized (mDisplayContent.mWmService.mGlobalLock) {
mAccessibilityWindow = null;
setAccessibilityWindow(null);
}
};
mAccessibilityWindow.asBinder().linkToDeath(mAccessibilityWindowDeath, 0);
} catch (RemoteException e) {
mAccessibilityWindow = null;
}
}
if (mDisplayContent.mWmService.mAccessibilityController != null) {
mDisplayContent.mWmService.mAccessibilityController.onSomeWindowResizedOrMoved(
mDisplayContent.getDisplayId());
}
}
}
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