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      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.deskclock;
     18 
     19 import android.content.BroadcastReceiver;
     20 import android.content.Context;
     21 import android.content.Intent;
     22 import android.content.IntentFilter;
     23 import android.content.res.Configuration;
     24 import android.database.ContentObserver;
     25 import android.os.Handler;
     26 import android.preference.PreferenceManager;
     27 import android.provider.Settings;
     28 import android.service.dreams.DreamService;
     29 import android.util.Log;
     30 import android.view.View;
     31 import android.widget.TextClock;
     32 
     33 import com.android.deskclock.Utils.ScreensaverMoveSaverRunnable;
     34 
     35 public class Screensaver extends DreamService {
     36     static final boolean DEBUG = false;
     37     static final String TAG = "DeskClock/Screensaver";
     38 
     39     private View mContentView, mSaverView;
     40     private View mAnalogClock, mDigitalClock;
     41     private String mDateFormat;
     42     private String mDateFormatForAccessibility;
     43 
     44     private final Handler mHandler = new Handler();
     45 
     46     private final ScreensaverMoveSaverRunnable mMoveSaverRunnable;
     47 
     48     private final ContentObserver mSettingsContentObserver = new ContentObserver(mHandler) {
     49         @Override
     50         public void onChange(boolean selfChange) {
     51             Utils.refreshAlarm(Screensaver.this, mContentView);
     52         }
     53     };
     54 
     55     // Thread that runs every midnight and refreshes the date.
     56     private final Runnable mMidnightUpdater = new Runnable() {
     57         @Override
     58         public void run() {
     59             Utils.updateDate(mDateFormat, mDateFormatForAccessibility, mContentView);
     60             Utils.setMidnightUpdater(mHandler, mMidnightUpdater);
     61         }
     62     };
     63 
     64     /**
     65      * Receiver to handle time reference changes.
     66      */
     67     private final BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
     68         @Override
     69         public void onReceive(Context context, Intent intent) {
     70             final String action = intent.getAction();
     71             if (action != null && (action.equals(Intent.ACTION_TIME_CHANGED)
     72                     || action.equals(Intent.ACTION_TIMEZONE_CHANGED))) {
     73                 Utils.updateDate(mDateFormat, mDateFormatForAccessibility, mContentView);
     74                 Utils.refreshAlarm(Screensaver.this, mContentView);
     75                 Utils.setMidnightUpdater(mHandler, mMidnightUpdater);
     76             }
     77         }
     78     };
     79 
     80     public Screensaver() {
     81         if (DEBUG) Log.d(TAG, "Screensaver allocated");
     82         mMoveSaverRunnable = new ScreensaverMoveSaverRunnable(mHandler);
     83     }
     84 
     85     @Override
     86     public void onCreate() {
     87         if (DEBUG) Log.d(TAG, "Screensaver created");
     88         super.onCreate();
     89 
     90         mDateFormat = getString(R.string.abbrev_wday_month_day_no_year);
     91         mDateFormatForAccessibility = getString(R.string.full_wday_month_day_no_year);
     92     }
     93 
     94     @Override
     95     public void onConfigurationChanged(Configuration newConfig) {
     96         if (DEBUG) Log.d(TAG, "Screensaver configuration changed");
     97         super.onConfigurationChanged(newConfig);
     98         mHandler.removeCallbacks(mMoveSaverRunnable);
     99         layoutClockSaver();
    100         mHandler.post(mMoveSaverRunnable);
    101     }
    102 
    103     @Override
    104     public void onAttachedToWindow() {
    105         if (DEBUG) Log.d(TAG, "Screensaver attached to window");
    106         super.onAttachedToWindow();
    107 
    108         // We want the screen saver to exit upon user interaction.
    109         setInteractive(false);
    110 
    111         setFullscreen(true);
    112 
    113         layoutClockSaver();
    114 
    115         // Setup handlers for time reference changes and date updates.
    116         IntentFilter filter = new IntentFilter();
    117         filter.addAction(Intent.ACTION_TIME_CHANGED);
    118         filter.addAction(Intent.ACTION_TIMEZONE_CHANGED);
    119         registerReceiver(mIntentReceiver, filter);
    120         Utils.setMidnightUpdater(mHandler, mMidnightUpdater);
    121 
    122         getContentResolver().registerContentObserver(
    123                 Settings.System.getUriFor(Settings.System.NEXT_ALARM_FORMATTED),
    124                 false,
    125                 mSettingsContentObserver);
    126         mHandler.post(mMoveSaverRunnable);
    127     }
    128 
    129     @Override
    130     public void onDetachedFromWindow() {
    131         if (DEBUG) Log.d(TAG, "Screensaver detached from window");
    132         super.onDetachedFromWindow();
    133 
    134         mHandler.removeCallbacks(mMoveSaverRunnable);
    135         getContentResolver().unregisterContentObserver(mSettingsContentObserver);
    136 
    137         // Tear down handlers for time reference changes and date updates.
    138         Utils.cancelMidnightUpdater(mHandler, mMidnightUpdater);
    139         unregisterReceiver(mIntentReceiver);
    140     }
    141 
    142     private void setClockStyle() {
    143         Utils.setClockStyle(this, mDigitalClock, mAnalogClock,
    144                 ScreensaverSettingsActivity.KEY_CLOCK_STYLE);
    145         mSaverView = findViewById(R.id.main_clock);
    146         boolean dimNightMode = PreferenceManager.getDefaultSharedPreferences(this)
    147                 .getBoolean(ScreensaverSettingsActivity.KEY_NIGHT_MODE, false);
    148         Utils.dimClockView(dimNightMode, mSaverView);
    149         setScreenBright(!dimNightMode);
    150     }
    151 
    152     private void layoutClockSaver() {
    153         setContentView(R.layout.desk_clock_saver);
    154         mDigitalClock = findViewById(R.id.digital_clock);
    155         mAnalogClock =findViewById(R.id.analog_clock);
    156         setClockStyle();
    157         Utils.setTimeFormat((TextClock)mDigitalClock,
    158             (int)getResources().getDimension(R.dimen.bottom_text_size));
    159 
    160         mContentView = (View) mSaverView.getParent();
    161         mSaverView.setAlpha(0);
    162 
    163         mMoveSaverRunnable.registerViews(mContentView, mSaverView);
    164 
    165         Utils.updateDate(mDateFormat, mDateFormatForAccessibility, mContentView);
    166         Utils.refreshAlarm(Screensaver.this, mContentView);
    167     }
    168 }
    169