| /* |
| * Copyright (C) 2013 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.settings; |
| |
| import static com.android.settingslib.display.BrightnessUtils.GAMMA_SPACE_MAX; |
| import static com.android.settingslib.display.BrightnessUtils.convertGammaToLinear; |
| import static com.android.settingslib.display.BrightnessUtils.convertLinearToGamma; |
| |
| import android.animation.ValueAnimator; |
| import android.content.ContentResolver; |
| import android.content.Context; |
| import android.database.ContentObserver; |
| import android.hardware.display.DisplayManager; |
| import android.net.Uri; |
| import android.os.AsyncTask; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.os.PowerManager; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.provider.Settings; |
| import android.service.vr.IVrManager; |
| import android.service.vr.IVrStateCallbacks; |
| import android.util.Log; |
| import android.widget.ImageView; |
| |
| import com.android.internal.logging.MetricsLogger; |
| import com.android.internal.logging.nano.MetricsProto.MetricsEvent; |
| import com.android.settingslib.RestrictedLockUtilsInternal; |
| import com.android.systemui.Dependency; |
| |
| import java.util.ArrayList; |
| |
| public class BrightnessController implements ToggleSlider.Listener { |
| private static final String TAG = "StatusBar.BrightnessController"; |
| private static final boolean SHOW_AUTOMATIC_ICON = false; |
| |
| private static final int SLIDER_ANIMATION_DURATION = 3000; |
| |
| private static final int MSG_UPDATE_ICON = 0; |
| private static final int MSG_UPDATE_SLIDER = 1; |
| private static final int MSG_SET_CHECKED = 2; |
| private static final int MSG_ATTACH_LISTENER = 3; |
| private static final int MSG_DETACH_LISTENER = 4; |
| private static final int MSG_VR_MODE_CHANGED = 5; |
| |
| private final int mMinimumBacklight; |
| private final int mMaximumBacklight; |
| private final int mDefaultBacklight; |
| private final int mMinimumBacklightForVr; |
| private final int mMaximumBacklightForVr; |
| private final int mDefaultBacklightForVr; |
| |
| private final Context mContext; |
| private final ImageView mIcon; |
| private final ToggleSlider mControl; |
| private final boolean mAutomaticAvailable; |
| private final DisplayManager mDisplayManager; |
| private final CurrentUserTracker mUserTracker; |
| private final IVrManager mVrManager; |
| |
| private final Handler mBackgroundHandler; |
| private final BrightnessObserver mBrightnessObserver; |
| |
| private ArrayList<BrightnessStateChangeCallback> mChangeCallbacks = |
| new ArrayList<BrightnessStateChangeCallback>(); |
| |
| private volatile boolean mAutomatic; // Brightness adjusted automatically using ambient light. |
| private volatile boolean mIsVrModeEnabled; |
| private boolean mListening; |
| private boolean mExternalChange; |
| private boolean mControlValueInitialized; |
| |
| private ValueAnimator mSliderAnimator; |
| |
| public interface BrightnessStateChangeCallback { |
| public void onBrightnessLevelChanged(); |
| } |
| |
| /** ContentObserver to watch brightness **/ |
| private class BrightnessObserver extends ContentObserver { |
| |
| private final Uri BRIGHTNESS_MODE_URI = |
| Settings.System.getUriFor(Settings.System.SCREEN_BRIGHTNESS_MODE); |
| private final Uri BRIGHTNESS_URI = |
| Settings.System.getUriFor(Settings.System.SCREEN_BRIGHTNESS); |
| private final Uri BRIGHTNESS_FOR_VR_URI = |
| Settings.System.getUriFor(Settings.System.SCREEN_BRIGHTNESS_FOR_VR); |
| |
| public BrightnessObserver(Handler handler) { |
| super(handler); |
| } |
| |
| @Override |
| public void onChange(boolean selfChange) { |
| onChange(selfChange, null); |
| } |
| |
| @Override |
| public void onChange(boolean selfChange, Uri uri) { |
| if (selfChange) return; |
| |
| if (BRIGHTNESS_MODE_URI.equals(uri)) { |
| mBackgroundHandler.post(mUpdateModeRunnable); |
| mBackgroundHandler.post(mUpdateSliderRunnable); |
| } else if (BRIGHTNESS_URI.equals(uri)) { |
| mBackgroundHandler.post(mUpdateSliderRunnable); |
| } else if (BRIGHTNESS_FOR_VR_URI.equals(uri)) { |
| mBackgroundHandler.post(mUpdateSliderRunnable); |
| } else { |
| mBackgroundHandler.post(mUpdateModeRunnable); |
| mBackgroundHandler.post(mUpdateSliderRunnable); |
| } |
| for (BrightnessStateChangeCallback cb : mChangeCallbacks) { |
| cb.onBrightnessLevelChanged(); |
| } |
| } |
| |
| public void startObserving() { |
| final ContentResolver cr = mContext.getContentResolver(); |
| cr.unregisterContentObserver(this); |
| cr.registerContentObserver( |
| BRIGHTNESS_MODE_URI, |
| false, this, UserHandle.USER_ALL); |
| cr.registerContentObserver( |
| BRIGHTNESS_URI, |
| false, this, UserHandle.USER_ALL); |
| cr.registerContentObserver( |
| BRIGHTNESS_FOR_VR_URI, |
| false, this, UserHandle.USER_ALL); |
| } |
| |
| public void stopObserving() { |
| final ContentResolver cr = mContext.getContentResolver(); |
| cr.unregisterContentObserver(this); |
| } |
| |
| } |
| |
| private final Runnable mStartListeningRunnable = new Runnable() { |
| @Override |
| public void run() { |
| mBrightnessObserver.startObserving(); |
| mUserTracker.startTracking(); |
| |
| // Update the slider and mode before attaching the listener so we don't |
| // receive the onChanged notifications for the initial values. |
| mUpdateModeRunnable.run(); |
| mUpdateSliderRunnable.run(); |
| |
| mHandler.sendEmptyMessage(MSG_ATTACH_LISTENER); |
| } |
| }; |
| |
| private final Runnable mStopListeningRunnable = new Runnable() { |
| @Override |
| public void run() { |
| mBrightnessObserver.stopObserving(); |
| mUserTracker.stopTracking(); |
| |
| mHandler.sendEmptyMessage(MSG_DETACH_LISTENER); |
| } |
| }; |
| |
| /** |
| * Fetch the brightness mode from the system settings and update the icon. Should be called from |
| * background thread. |
| */ |
| private final Runnable mUpdateModeRunnable = new Runnable() { |
| @Override |
| public void run() { |
| if (mAutomaticAvailable) { |
| int automatic; |
| automatic = Settings.System.getIntForUser(mContext.getContentResolver(), |
| Settings.System.SCREEN_BRIGHTNESS_MODE, |
| Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, |
| UserHandle.USER_CURRENT); |
| mAutomatic = automatic != Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL; |
| mHandler.obtainMessage(MSG_UPDATE_ICON, mAutomatic ? 1 : 0).sendToTarget(); |
| } else { |
| mHandler.obtainMessage(MSG_SET_CHECKED, 0).sendToTarget(); |
| mHandler.obtainMessage(MSG_UPDATE_ICON, 0 /* automatic */).sendToTarget(); |
| } |
| } |
| }; |
| |
| /** |
| * Fetch the brightness from the system settings and update the slider. Should be called from |
| * background thread. |
| */ |
| private final Runnable mUpdateSliderRunnable = new Runnable() { |
| @Override |
| public void run() { |
| final int val; |
| final boolean inVrMode = mIsVrModeEnabled; |
| if (inVrMode) { |
| val = Settings.System.getIntForUser(mContext.getContentResolver(), |
| Settings.System.SCREEN_BRIGHTNESS_FOR_VR, mDefaultBacklightForVr, |
| UserHandle.USER_CURRENT); |
| } else { |
| val = Settings.System.getIntForUser(mContext.getContentResolver(), |
| Settings.System.SCREEN_BRIGHTNESS, mDefaultBacklight, |
| UserHandle.USER_CURRENT); |
| } |
| mHandler.obtainMessage(MSG_UPDATE_SLIDER, val, inVrMode ? 1 : 0).sendToTarget(); |
| } |
| }; |
| |
| private final IVrStateCallbacks mVrStateCallbacks = new IVrStateCallbacks.Stub() { |
| @Override |
| public void onVrStateChanged(boolean enabled) { |
| mHandler.obtainMessage(MSG_VR_MODE_CHANGED, enabled ? 1 : 0, 0) |
| .sendToTarget(); |
| } |
| }; |
| |
| private final Handler mHandler = new Handler() { |
| @Override |
| public void handleMessage(Message msg) { |
| mExternalChange = true; |
| try { |
| switch (msg.what) { |
| case MSG_UPDATE_ICON: |
| updateIcon(msg.arg1 != 0); |
| break; |
| case MSG_UPDATE_SLIDER: |
| updateSlider(msg.arg1, msg.arg2 != 0); |
| break; |
| case MSG_SET_CHECKED: |
| mControl.setChecked(msg.arg1 != 0); |
| break; |
| case MSG_ATTACH_LISTENER: |
| mControl.setOnChangedListener(BrightnessController.this); |
| break; |
| case MSG_DETACH_LISTENER: |
| mControl.setOnChangedListener(null); |
| break; |
| case MSG_VR_MODE_CHANGED: |
| updateVrMode(msg.arg1 != 0); |
| break; |
| default: |
| super.handleMessage(msg); |
| } |
| } finally { |
| mExternalChange = false; |
| } |
| } |
| }; |
| |
| public BrightnessController(Context context, ImageView icon, ToggleSlider control) { |
| mContext = context; |
| mIcon = icon; |
| mControl = control; |
| mControl.setMax(GAMMA_SPACE_MAX); |
| mBackgroundHandler = new Handler((Looper) Dependency.get(Dependency.BG_LOOPER)); |
| mUserTracker = new CurrentUserTracker(mContext) { |
| @Override |
| public void onUserSwitched(int newUserId) { |
| mBackgroundHandler.post(mUpdateModeRunnable); |
| mBackgroundHandler.post(mUpdateSliderRunnable); |
| } |
| }; |
| mBrightnessObserver = new BrightnessObserver(mHandler); |
| |
| PowerManager pm = context.getSystemService(PowerManager.class); |
| mMinimumBacklight = pm.getMinimumScreenBrightnessSetting(); |
| mMaximumBacklight = pm.getMaximumScreenBrightnessSetting(); |
| mDefaultBacklight = pm.getDefaultScreenBrightnessSetting(); |
| mMinimumBacklightForVr = pm.getMinimumScreenBrightnessForVrSetting(); |
| mMaximumBacklightForVr = pm.getMaximumScreenBrightnessForVrSetting(); |
| mDefaultBacklightForVr = pm.getDefaultScreenBrightnessForVrSetting(); |
| |
| mAutomaticAvailable = context.getResources().getBoolean( |
| com.android.internal.R.bool.config_automatic_brightness_available); |
| mDisplayManager = context.getSystemService(DisplayManager.class); |
| mVrManager = IVrManager.Stub.asInterface(ServiceManager.getService( |
| Context.VR_SERVICE)); |
| } |
| |
| public void addStateChangedCallback(BrightnessStateChangeCallback cb) { |
| mChangeCallbacks.add(cb); |
| } |
| |
| public boolean removeStateChangedCallback(BrightnessStateChangeCallback cb) { |
| return mChangeCallbacks.remove(cb); |
| } |
| |
| @Override |
| public void onInit(ToggleSlider control) { |
| // Do nothing |
| } |
| |
| public void registerCallbacks() { |
| if (mListening) { |
| return; |
| } |
| |
| if (mVrManager != null) { |
| try { |
| mVrManager.registerListener(mVrStateCallbacks); |
| mIsVrModeEnabled = mVrManager.getVrModeState(); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Failed to register VR mode state listener: ", e); |
| } |
| } |
| |
| mBackgroundHandler.post(mStartListeningRunnable); |
| mListening = true; |
| } |
| |
| /** Unregister all call backs, both to and from the controller */ |
| public void unregisterCallbacks() { |
| if (!mListening) { |
| return; |
| } |
| |
| if (mVrManager != null) { |
| try { |
| mVrManager.unregisterListener(mVrStateCallbacks); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Failed to unregister VR mode state listener: ", e); |
| } |
| } |
| |
| mBackgroundHandler.post(mStopListeningRunnable); |
| mListening = false; |
| mControlValueInitialized = false; |
| } |
| |
| @Override |
| public void onChanged(ToggleSlider toggleSlider, boolean tracking, boolean automatic, |
| int value, boolean stopTracking) { |
| updateIcon(mAutomatic); |
| if (mExternalChange) return; |
| |
| if (mSliderAnimator != null) { |
| mSliderAnimator.cancel(); |
| } |
| |
| final int min; |
| final int max; |
| final int metric; |
| final String setting; |
| |
| if (mIsVrModeEnabled) { |
| metric = MetricsEvent.ACTION_BRIGHTNESS_FOR_VR; |
| min = mMinimumBacklightForVr; |
| max = mMaximumBacklightForVr; |
| setting = Settings.System.SCREEN_BRIGHTNESS_FOR_VR; |
| } else { |
| metric = mAutomatic |
| ? MetricsEvent.ACTION_BRIGHTNESS_AUTO |
| : MetricsEvent.ACTION_BRIGHTNESS; |
| min = mMinimumBacklight; |
| max = mMaximumBacklight; |
| setting = Settings.System.SCREEN_BRIGHTNESS; |
| } |
| |
| final int val = convertGammaToLinear(value, min, max); |
| |
| if (stopTracking) { |
| MetricsLogger.action(mContext, metric, val); |
| } |
| |
| setBrightness(val); |
| if (!tracking) { |
| AsyncTask.execute(new Runnable() { |
| public void run() { |
| Settings.System.putIntForUser(mContext.getContentResolver(), |
| setting, val, UserHandle.USER_CURRENT); |
| } |
| }); |
| } |
| |
| for (BrightnessStateChangeCallback cb : mChangeCallbacks) { |
| cb.onBrightnessLevelChanged(); |
| } |
| } |
| |
| public void checkRestrictionAndSetEnabled() { |
| mBackgroundHandler.post(new Runnable() { |
| @Override |
| public void run() { |
| ((ToggleSliderView)mControl).setEnforcedAdmin( |
| RestrictedLockUtilsInternal.checkIfRestrictionEnforced(mContext, |
| UserManager.DISALLOW_CONFIG_BRIGHTNESS, |
| mUserTracker.getCurrentUserId())); |
| } |
| }); |
| } |
| |
| private void setMode(int mode) { |
| Settings.System.putIntForUser(mContext.getContentResolver(), |
| Settings.System.SCREEN_BRIGHTNESS_MODE, mode, |
| mUserTracker.getCurrentUserId()); |
| } |
| |
| private void setBrightness(int brightness) { |
| mDisplayManager.setTemporaryBrightness(brightness); |
| } |
| |
| private void setBrightnessAdj(float adj) { |
| mDisplayManager.setTemporaryAutoBrightnessAdjustment(adj); |
| } |
| |
| private void updateIcon(boolean automatic) { |
| if (mIcon != null) { |
| mIcon.setImageResource(automatic && SHOW_AUTOMATIC_ICON ? |
| com.android.systemui.R.drawable.ic_qs_brightness_auto_on : |
| com.android.systemui.R.drawable.ic_qs_brightness_auto_off); |
| } |
| } |
| |
| private void updateVrMode(boolean isEnabled) { |
| if (mIsVrModeEnabled != isEnabled) { |
| mIsVrModeEnabled = isEnabled; |
| mBackgroundHandler.post(mUpdateSliderRunnable); |
| } |
| } |
| |
| private void updateSlider(int val, boolean inVrMode) { |
| final int min; |
| final int max; |
| if (inVrMode) { |
| min = mMinimumBacklightForVr; |
| max = mMaximumBacklightForVr; |
| } else { |
| min = mMinimumBacklight; |
| max = mMaximumBacklight; |
| } |
| if (val == convertGammaToLinear(mControl.getValue(), min, max)) { |
| // If we have more resolution on the slider than we do in the actual setting, then |
| // multiple slider positions will map to the same setting value. Thus, if we see a |
| // setting value here that maps to the current slider position, we don't bother to |
| // calculate the new slider position since it may differ and look like a brightness |
| // change to the user even though it isn't one. |
| return; |
| } |
| final int sliderVal = convertLinearToGamma(val, min, max); |
| animateSliderTo(sliderVal); |
| } |
| |
| private void animateSliderTo(int target) { |
| if (!mControlValueInitialized) { |
| // Don't animate the first value since its default state isn't meaningful to users. |
| mControl.setValue(target); |
| mControlValueInitialized = true; |
| } |
| if (mSliderAnimator != null && mSliderAnimator.isStarted()) { |
| mSliderAnimator.cancel(); |
| } |
| mSliderAnimator = ValueAnimator.ofInt(mControl.getValue(), target); |
| mSliderAnimator.addUpdateListener((ValueAnimator animation) -> { |
| mExternalChange = true; |
| mControl.setValue((int) animation.getAnimatedValue()); |
| mExternalChange = false; |
| }); |
| final long animationDuration = SLIDER_ANIMATION_DURATION * Math.abs( |
| mControl.getValue() - target) / GAMMA_SPACE_MAX; |
| mSliderAnimator.setDuration(animationDuration); |
| mSliderAnimator.start(); |
| } |
| |
| } |