/*
|
* 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.policy;
|
|
import android.content.Context;
|
import android.graphics.Rect;
|
import android.hardware.Sensor;
|
import android.hardware.SensorEvent;
|
import android.hardware.SensorEventListener;
|
import android.hardware.SensorManager;
|
import android.hardware.display.DisplayManagerInternal;
|
import android.os.Handler;
|
import android.os.RemoteCallbackList;
|
import android.os.RemoteException;
|
import android.view.DisplayInfo;
|
import android.view.IDisplayFoldListener;
|
|
import com.android.server.DisplayThread;
|
import com.android.server.LocalServices;
|
import com.android.server.wm.WindowManagerInternal;
|
|
/**
|
* Controls the behavior of foldable devices whose screen can literally bend and fold.
|
* TODO(b/126160895): Move DisplayFoldController from PhoneWindowManager to DisplayPolicy.
|
*/
|
class DisplayFoldController {
|
|
private static final String TAG = "DisplayFoldController";
|
|
private final WindowManagerInternal mWindowManagerInternal;
|
private final DisplayManagerInternal mDisplayManagerInternal;
|
private final int mDisplayId;
|
private final Handler mHandler;
|
|
/** The display area while device is folded. */
|
private final Rect mFoldedArea;
|
/** The display area to override the original folded area. */
|
private Rect mOverrideFoldedArea = new Rect();
|
|
private final DisplayInfo mNonOverrideDisplayInfo = new DisplayInfo();
|
private final RemoteCallbackList<IDisplayFoldListener> mListeners = new RemoteCallbackList<>();
|
private Boolean mFolded;
|
private String mFocusedApp;
|
private final DisplayFoldDurationLogger mDurationLogger = new DisplayFoldDurationLogger();
|
|
DisplayFoldController(WindowManagerInternal windowManagerInternal,
|
DisplayManagerInternal displayManagerInternal, int displayId, Rect foldedArea,
|
Handler handler) {
|
mWindowManagerInternal = windowManagerInternal;
|
mDisplayManagerInternal = displayManagerInternal;
|
mDisplayId = displayId;
|
mFoldedArea = new Rect(foldedArea);
|
mHandler = handler;
|
}
|
|
void finishedGoingToSleep() {
|
mDurationLogger.onFinishedGoingToSleep();
|
}
|
|
void finishedWakingUp() {
|
mDurationLogger.onFinishedWakingUp(mFolded);
|
}
|
|
void requestDeviceFolded(boolean folded) {
|
mHandler.post(() -> setDeviceFolded(folded));
|
}
|
|
void setDeviceFolded(boolean folded) {
|
if (mFolded != null && mFolded == folded) {
|
return;
|
}
|
if (folded) {
|
Rect foldedArea;
|
if (!mOverrideFoldedArea.isEmpty()) {
|
foldedArea = mOverrideFoldedArea;
|
} else if (!mFoldedArea.isEmpty()) {
|
foldedArea = mFoldedArea;
|
} else {
|
return;
|
}
|
|
mDisplayManagerInternal.getNonOverrideDisplayInfo(mDisplayId, mNonOverrideDisplayInfo);
|
final int dx = (mNonOverrideDisplayInfo.logicalWidth - foldedArea.width()) / 2
|
- foldedArea.left;
|
final int dy = (mNonOverrideDisplayInfo.logicalHeight - foldedArea.height()) / 2
|
- foldedArea.top;
|
|
// Bypass scaling otherwise LogicalDisplay will scale contents by default.
|
mDisplayManagerInternal.setDisplayScalingDisabled(mDisplayId, true);
|
mWindowManagerInternal.setForcedDisplaySize(mDisplayId,
|
foldedArea.width(), foldedArea.height());
|
mDisplayManagerInternal.setDisplayOffsets(mDisplayId, -dx, -dy);
|
} else {
|
mDisplayManagerInternal.setDisplayScalingDisabled(mDisplayId, false);
|
mWindowManagerInternal.clearForcedDisplaySize(mDisplayId);
|
mDisplayManagerInternal.setDisplayOffsets(mDisplayId, 0, 0);
|
}
|
mDurationLogger.setDeviceFolded(folded);
|
mDurationLogger.logFocusedAppWithFoldState(folded, mFocusedApp);
|
mFolded = folded;
|
|
final int n = mListeners.beginBroadcast();
|
for (int i = 0; i < n; i++) {
|
try {
|
mListeners.getBroadcastItem(i).onDisplayFoldChanged(mDisplayId, folded);
|
} catch (RemoteException e) {
|
// Listener died.
|
}
|
}
|
mListeners.finishBroadcast();
|
}
|
|
void registerDisplayFoldListener(IDisplayFoldListener listener) {
|
mListeners.register(listener);
|
if (mFolded == null) {
|
return;
|
}
|
mHandler.post(() -> {
|
try {
|
listener.onDisplayFoldChanged(mDisplayId, mFolded);
|
} catch (RemoteException e) {
|
// Listener died.
|
}
|
});
|
}
|
|
void unregisterDisplayFoldListener(IDisplayFoldListener listener) {
|
mListeners.unregister(listener);
|
}
|
|
void setOverrideFoldedArea(Rect area) {
|
mOverrideFoldedArea.set(area);
|
}
|
|
Rect getFoldedArea() {
|
if (!mOverrideFoldedArea.isEmpty()) {
|
return mOverrideFoldedArea;
|
} else {
|
return mFoldedArea;
|
}
|
}
|
|
/**
|
* Only used for the case that persist.debug.force_foldable is set.
|
* This is using proximity sensor to simulate the fold state switch.
|
*/
|
static DisplayFoldController createWithProxSensor(Context context, int displayId) {
|
final SensorManager sensorManager = context.getSystemService(SensorManager.class);
|
final Sensor proxSensor = sensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY);
|
if (proxSensor == null) {
|
return null;
|
}
|
|
final DisplayFoldController result = create(context, displayId);
|
sensorManager.registerListener(new SensorEventListener() {
|
@Override
|
public void onSensorChanged(SensorEvent event) {
|
result.requestDeviceFolded(event.values[0] < 1f);
|
}
|
|
@Override
|
public void onAccuracyChanged(Sensor sensor, int accuracy) {
|
// Ignore.
|
}
|
}, proxSensor, SensorManager.SENSOR_DELAY_NORMAL);
|
|
return result;
|
}
|
|
void onDefaultDisplayFocusChanged(String pkg) {
|
mFocusedApp = pkg;
|
}
|
|
static DisplayFoldController create(Context context, int displayId) {
|
final DisplayManagerInternal displayService =
|
LocalServices.getService(DisplayManagerInternal.class);
|
final String configFoldedArea = context.getResources().getString(
|
com.android.internal.R.string.config_foldedArea);
|
final Rect foldedArea;
|
if (configFoldedArea == null || configFoldedArea.isEmpty()) {
|
foldedArea = new Rect();
|
} else {
|
foldedArea = Rect.unflattenFromString(configFoldedArea);
|
}
|
|
return new DisplayFoldController(LocalServices.getService(WindowManagerInternal.class),
|
displayService, displayId, foldedArea, DisplayThread.getHandler());
|
}
|
}
|
