| /* |
| * Copyright (C) 2015 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; |
| |
| import android.app.ActivityManager; |
| import android.app.KeyguardManager; |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.res.Resources; |
| import android.database.ContentObserver; |
| import android.hardware.Sensor; |
| import android.hardware.SensorEvent; |
| import android.hardware.SensorEventListener; |
| import android.hardware.SensorManager; |
| import android.os.Handler; |
| import android.os.PowerManager; |
| import android.os.PowerManager.WakeLock; |
| import android.os.SystemProperties; |
| import android.os.Vibrator; |
| import android.provider.Settings; |
| import android.util.Slog; |
| |
| import com.android.server.statusbar.StatusBarManagerInternal; |
| |
| /** |
| * The service that listens for gestures detected in sensor firmware and starts the intent |
| * accordingly. |
| * <p>For now, only camera launch gesture is supported, and in the future, more gestures can be |
| * added.</p> |
| * @hide |
| */ |
| class GestureLauncherService extends SystemService { |
| private static final boolean DBG = false; |
| private static final String TAG = "GestureLauncherService"; |
| |
| /** The listener that receives the gesture event. */ |
| private final GestureEventListener mGestureListener = new GestureEventListener(); |
| |
| private Sensor mCameraLaunchSensor; |
| private Vibrator mVibrator; |
| private Context mContext; |
| |
| /** The wake lock held when a gesture is detected. */ |
| private WakeLock mWakeLock; |
| private boolean mRegistered; |
| private int mUserId; |
| |
| public GestureLauncherService(Context context) { |
| super(context); |
| mContext = context; |
| } |
| |
| public void onStart() { |
| // Nothing to publish. |
| } |
| |
| public void onBootPhase(int phase) { |
| if (phase == PHASE_THIRD_PARTY_APPS_CAN_START) { |
| Resources resources = mContext.getResources(); |
| if (!isGestureLauncherEnabled(resources)) { |
| if (DBG) Slog.d(TAG, "Gesture launcher is disabled in system properties."); |
| return; |
| } |
| |
| mVibrator = (Vibrator) mContext.getSystemService(Context.VIBRATOR_SERVICE); |
| PowerManager powerManager = (PowerManager) mContext.getSystemService( |
| Context.POWER_SERVICE); |
| mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, |
| "GestureLauncherService"); |
| updateCameraRegistered(); |
| |
| mUserId = ActivityManager.getCurrentUser(); |
| mContext.registerReceiver(mUserReceiver, new IntentFilter(Intent.ACTION_USER_SWITCHED)); |
| registerContentObserver(); |
| } |
| } |
| |
| private void registerContentObserver() { |
| mContext.getContentResolver().registerContentObserver( |
| Settings.Secure.getUriFor(Settings.Secure.CAMERA_GESTURE_DISABLED), |
| false, mSettingObserver, mUserId); |
| } |
| |
| private void updateCameraRegistered() { |
| Resources resources = mContext.getResources(); |
| if (isCameraLaunchSettingEnabled(mContext, mUserId)) { |
| registerCameraLaunchGesture(resources); |
| } else { |
| unregisterCameraLaunchGesture(); |
| } |
| } |
| |
| private void unregisterCameraLaunchGesture() { |
| if (mRegistered) { |
| mRegistered = false; |
| SensorManager sensorManager = (SensorManager) mContext.getSystemService( |
| Context.SENSOR_SERVICE); |
| sensorManager.unregisterListener(mGestureListener); |
| } |
| } |
| |
| /** |
| * Registers for the camera launch gesture. |
| */ |
| private void registerCameraLaunchGesture(Resources resources) { |
| if (mRegistered) { |
| return; |
| } |
| SensorManager sensorManager = (SensorManager) mContext.getSystemService( |
| Context.SENSOR_SERVICE); |
| int cameraLaunchGestureId = resources.getInteger( |
| com.android.internal.R.integer.config_cameraLaunchGestureSensorType); |
| if (cameraLaunchGestureId != -1) { |
| mRegistered = false; |
| String sensorName = resources.getString( |
| com.android.internal.R.string.config_cameraLaunchGestureSensorStringType); |
| mCameraLaunchSensor = sensorManager.getDefaultSensor( |
| cameraLaunchGestureId, |
| true /*wakeUp*/); |
| |
| // Compare the camera gesture string type to that in the resource file to make |
| // sure we are registering the correct sensor. This is redundant check, it |
| // makes the code more robust. |
| if (mCameraLaunchSensor != null) { |
| if (sensorName.equals(mCameraLaunchSensor.getStringType())) { |
| mRegistered = sensorManager.registerListener(mGestureListener, |
| mCameraLaunchSensor, 0); |
| } else { |
| String message = String.format("Wrong configuration. Sensor type and sensor " |
| + "string type don't match: %s in resources, %s in the sensor.", |
| sensorName, mCameraLaunchSensor.getStringType()); |
| throw new RuntimeException(message); |
| } |
| } |
| if (DBG) Slog.d(TAG, "Camera launch sensor registered: " + mRegistered); |
| } else { |
| if (DBG) Slog.d(TAG, "Camera launch sensor is not specified."); |
| } |
| } |
| |
| public static boolean isCameraLaunchSettingEnabled(Context context, int userId) { |
| return isCameraLaunchEnabled(context.getResources()) |
| && (Settings.Secure.getIntForUser(context.getContentResolver(), |
| Settings.Secure.CAMERA_GESTURE_DISABLED, 0, userId) == 0); |
| } |
| |
| /** |
| * Whether to enable the camera launch gesture. |
| */ |
| public static boolean isCameraLaunchEnabled(Resources resources) { |
| boolean configSet = resources.getInteger( |
| com.android.internal.R.integer.config_cameraLaunchGestureSensorType) != -1; |
| return configSet && |
| !SystemProperties.getBoolean("gesture.disable_camera_launch", false); |
| } |
| |
| /** |
| * Whether GestureLauncherService should be enabled according to system properties. |
| */ |
| public static boolean isGestureLauncherEnabled(Resources resources) { |
| // For now, the only supported gesture is camera launch gesture, so whether to enable this |
| // service equals to isCameraLaunchEnabled(); |
| return isCameraLaunchEnabled(resources); |
| } |
| |
| private final BroadcastReceiver mUserReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| if (Intent.ACTION_USER_SWITCHED.equals(intent.getAction())) { |
| mUserId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0); |
| mContext.getContentResolver().unregisterContentObserver(mSettingObserver); |
| registerContentObserver(); |
| updateCameraRegistered(); |
| } |
| } |
| }; |
| |
| private final ContentObserver mSettingObserver = new ContentObserver(new Handler()) { |
| public void onChange(boolean selfChange, android.net.Uri uri, int userId) { |
| if (userId == mUserId) { |
| updateCameraRegistered(); |
| } |
| } |
| }; |
| |
| private final class GestureEventListener implements SensorEventListener { |
| @Override |
| public void onSensorChanged(SensorEvent event) { |
| if (event.sensor == mCameraLaunchSensor) { |
| handleCameraLaunchGesture(); |
| return; |
| } |
| } |
| |
| private void handleCameraLaunchGesture() { |
| if (DBG) Slog.d(TAG, "Received a camera launch event."); |
| boolean userSetupComplete = Settings.Secure.getInt(mContext.getContentResolver(), |
| Settings.Secure.USER_SETUP_COMPLETE, 0) != 0; |
| if (!userSetupComplete) { |
| if (DBG) Slog.d(TAG, String.format( |
| "userSetupComplete = %s, ignoring camera launch gesture.", |
| userSetupComplete)); |
| return; |
| } |
| if (DBG) Slog.d(TAG, String.format( |
| "userSetupComplete = %s, performing camera launch gesture.", |
| userSetupComplete)); |
| |
| if (mVibrator != null && mVibrator.hasVibrator()) { |
| mVibrator.vibrate(1000L); |
| } |
| // Make sure we don't sleep too early |
| mWakeLock.acquire(500L); |
| StatusBarManagerInternal service = LocalServices.getService( |
| StatusBarManagerInternal.class); |
| service.onCameraLaunchGestureDetected(); |
| mWakeLock.release(); |
| |
| } |
| |
| @Override |
| public void onAccuracyChanged(Sensor sensor, int accuracy) { |
| // Ignored. |
| } |
| } |
| } |
