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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.app.AlarmManager;
     20 import android.content.BroadcastReceiver;
     21 import android.content.Context;
     22 import android.content.Intent;
     23 import android.content.IntentFilter;
     24 import android.content.res.Configuration;
     25 import android.os.Handler;
     26 import android.preference.PreferenceManager;
     27 import android.service.dreams.DreamService;
     28 import android.util.Log;
     29 import android.view.View;
     30 import android.widget.TextClock;
     31 
     32 import com.android.deskclock.Utils.ScreensaverMoveSaverRunnable;
     33 
     34 public class Screensaver extends DreamService {
     35     static final boolean DEBUG = false;
     36     static final String TAG = "DeskClock/Screensaver";
     37 
     38     private View mContentView, mSaverView;
     39     private View mAnalogClock, mDigitalClock;
     40     private String mDateFormat;
     41     private String mDateFormatForAccessibility;
     42 
     43     private final Handler mHandler = new Handler();
     44 
     45     private final ScreensaverMoveSaverRunnable mMoveSaverRunnable;
     46 
     47     // Thread that runs every midnight and refreshes the date.
     48     private final Runnable mMidnightUpdater = new Runnable() {
     49         @Override
     50         public void run() {
     51             Utils.updateDate(mDateFormat, mDateFormatForAccessibility, mContentView);
     52             Utils.setMidnightUpdater(mHandler, mMidnightUpdater);
     53         }
     54     };
     55 
     56     /**
     57      * Receiver to handle time reference changes.
     58      */
     59     private final BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
     60         @Override
     61         public void onReceive(Context context, Intent intent) {
     62             final String action = intent.getAction();
     63             if (DEBUG) Log.v(TAG, "Screensaver onReceive, action: " + action);
     64 
     65             if (action == null) {
     66                 return;
     67             }
     68 
     69             if (action.equals(Intent.ACTION_TIME_CHANGED)
     70                     || action.equals(Intent.ACTION_TIMEZONE_CHANGED)) {
     71                 Utils.updateDate(mDateFormat, mDateFormatForAccessibility, mContentView);
     72                 Utils.refreshAlarm(Screensaver.this, mContentView);
     73                 Utils.setMidnightUpdater(mHandler, mMidnightUpdater);
     74             } else if (action.equals(AlarmManager.ACTION_NEXT_ALARM_CLOCK_CHANGED)) {
     75                 Utils.refreshAlarm(Screensaver.this, mContentView);
     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         setTheme(R.style.DeskClockParentTheme);
     91 
     92         mDateFormat = getString(R.string.abbrev_wday_month_day_no_year);
     93         mDateFormatForAccessibility = getString(R.string.full_wday_month_day_no_year);
     94     }
     95 
     96     @Override
     97     public void onConfigurationChanged(Configuration newConfig) {
     98         if (DEBUG) Log.d(TAG, "Screensaver configuration changed");
     99         super.onConfigurationChanged(newConfig);
    100         mHandler.removeCallbacks(mMoveSaverRunnable);
    101         layoutClockSaver();
    102         mHandler.post(mMoveSaverRunnable);
    103     }
    104 
    105     @Override
    106     public void onAttachedToWindow() {
    107         if (DEBUG) Log.d(TAG, "Screensaver attached to window");
    108         super.onAttachedToWindow();
    109 
    110         // We want the screen saver to exit upon user interaction.
    111         setInteractive(false);
    112 
    113         setFullscreen(true);
    114 
    115         layoutClockSaver();
    116 
    117         // Setup handlers for time reference changes and date updates.
    118         IntentFilter filter = new IntentFilter();
    119         filter.addAction(Intent.ACTION_TIME_CHANGED);
    120         filter.addAction(Intent.ACTION_TIMEZONE_CHANGED);
    121         registerReceiver(mIntentReceiver, filter);
    122         Utils.setMidnightUpdater(mHandler, mMidnightUpdater);
    123 
    124         mHandler.post(mMoveSaverRunnable);
    125     }
    126 
    127     @Override
    128     public void onDetachedFromWindow() {
    129         if (DEBUG) Log.d(TAG, "Screensaver detached from window");
    130         super.onDetachedFromWindow();
    131 
    132         mHandler.removeCallbacks(mMoveSaverRunnable);
    133 
    134         // Tear down handlers for time reference changes and date updates.
    135         Utils.cancelMidnightUpdater(mHandler, mMidnightUpdater);
    136         unregisterReceiver(mIntentReceiver);
    137     }
    138 
    139     private void setClockStyle() {
    140         Utils.setClockStyle(this, mDigitalClock, mAnalogClock,
    141                 ScreensaverSettingsActivity.KEY_CLOCK_STYLE);
    142         mSaverView = findViewById(R.id.main_clock);
    143         boolean dimNightMode = PreferenceManager.getDefaultSharedPreferences(this)
    144                 .getBoolean(ScreensaverSettingsActivity.KEY_NIGHT_MODE, false);
    145         Utils.dimClockView(dimNightMode, mSaverView);
    146         setScreenBright(!dimNightMode);
    147     }
    148 
    149     private void layoutClockSaver() {
    150         setContentView(R.layout.desk_clock_saver);
    151         mDigitalClock = findViewById(R.id.digital_clock);
    152         mAnalogClock =findViewById(R.id.analog_clock);
    153         setClockStyle();
    154         Utils.setTimeFormat((TextClock)mDigitalClock,
    155             (int)getResources().getDimension(R.dimen.main_ampm_font_size));
    156 
    157         mContentView = (View) mSaverView.getParent();
    158         mSaverView.setAlpha(0);
    159 
    160         mMoveSaverRunnable.registerViews(mContentView, mSaverView);
    161 
    162         Utils.updateDate(mDateFormat, mDateFormatForAccessibility, mContentView);
    163         Utils.refreshAlarm(Screensaver.this, mContentView);
    164     }
    165 }
    166