DeskClock.java revision 191b91f419a0ed35104b3436615364b302cfbd67 
1/*
2 * Copyright (C) 2009 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
17package com.android.deskclock;
18
19import static android.os.BatteryManager.BATTERY_STATUS_UNKNOWN;
20
21import android.app.Activity;
22import android.app.AlarmManager;
23import android.app.PendingIntent;
24import android.app.UiModeManager;
25import android.content.BroadcastReceiver;
26import android.content.Context;
27import android.content.Intent;
28import android.content.IntentFilter;
29import android.content.pm.PackageManager;
30import android.content.res.Configuration;
31import android.content.res.Resources;
32import android.database.ContentObserver;
33import android.database.Cursor;
34import android.graphics.Rect;
35import android.graphics.drawable.Drawable;
36import android.net.Uri;
37import android.os.BatteryManager;
38import android.os.Bundle;
39import android.os.Handler;
40import android.os.Message;
41import android.provider.MediaStore;
42import android.provider.Settings;
43import android.text.TextUtils;
44import android.text.format.DateFormat;
45import android.util.DisplayMetrics;
46import android.util.Log;
47import android.view.GestureDetector;
48import android.view.Menu;
49import android.view.MenuInflater;
50import android.view.MenuItem;
51import android.view.MotionEvent;
52import android.view.View;
53import android.view.ViewGroup;
54import android.view.ViewTreeObserver;
55import android.view.Window;
56import android.view.WindowManager;
57import android.view.animation.AnimationUtils;
58import android.widget.AbsoluteLayout;
59import android.widget.ImageButton;
60import android.widget.ImageView;
61import android.widget.TextView;
62
63import java.util.Calendar;
64import java.util.Date;
65import java.util.Random;
66
67/**
68 * A clock. On your desk.
69 */
70public class DeskClock extends Activity {
71    private static final boolean DEBUG = false;
72
73    private static final String LOG_TAG = "DeskClock";
74
75    // Alarm action for midnight (so we can update the date display).
76    private static final String ACTION_MIDNIGHT = "com.android.deskclock.MIDNIGHT";
77
78    // This controls whether or not we will show a battery display when plugged
79    // in.
80    private static final boolean USE_BATTERY_DISPLAY = false;
81
82    // Delay before engaging the burn-in protection mode (green-on-black).
83    private final long SCREEN_SAVER_TIMEOUT = 5 * 60 * 1000; // 5 min
84
85    // Repositioning delay in screen saver.
86    public static final long SCREEN_SAVER_MOVE_DELAY = 60 * 1000; // 1 min
87
88    // Color to use for text & graphics in screen saver mode.
89    private int SCREEN_SAVER_COLOR = 0xFF006688;
90    private int SCREEN_SAVER_COLOR_DIM = 0xFF001634;
91
92    // Opacity of black layer between clock display and wallpaper.
93    private final float DIM_BEHIND_AMOUNT_NORMAL = 0.4f;
94    private final float DIM_BEHIND_AMOUNT_DIMMED = 0.8f; // higher contrast when display dimmed
95
96    private final int SCREEN_SAVER_TIMEOUT_MSG   = 0x2000;
97    private final int SCREEN_SAVER_MOVE_MSG      = 0x2001;
98
99    // State variables follow.
100    private DigitalClock mTime;
101    private TextView mDate;
102
103    private TextView mNextAlarm = null;
104    private TextView mBatteryDisplay;
105
106    private boolean mDimmed = false;
107    private boolean mScreenSaverMode = false;
108
109    private String mDateFormat;
110
111    private int mBatteryLevel = -1;
112    private boolean mPluggedIn = false;
113
114    private Random mRNG;
115
116    private PendingIntent mMidnightIntent;
117
118    private final BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
119        @Override
120        public void onReceive(Context context, Intent intent) {
121            final String action = intent.getAction();
122            if (DEBUG) Log.d(LOG_TAG, "mIntentReceiver.onReceive: action=" + action + ", intent=" + intent);
123            if (Intent.ACTION_DATE_CHANGED.equals(action) || ACTION_MIDNIGHT.equals(action)) {
124                refreshDate();
125            } else if (Intent.ACTION_BATTERY_CHANGED.equals(action)) {
126                handleBatteryUpdate(
127                    intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, 0),
128                    intent.getIntExtra(BatteryManager.EXTRA_STATUS, BATTERY_STATUS_UNKNOWN),
129                    intent.getIntExtra(BatteryManager.EXTRA_LEVEL, 0));
130            }
131        }
132    };
133
134    private final Handler mHandy = new Handler() {
135        @Override
136        public void handleMessage(Message m) {
137            if (m.what == SCREEN_SAVER_TIMEOUT_MSG) {
138                saveScreen();
139            } else if (m.what == SCREEN_SAVER_MOVE_MSG) {
140                moveScreenSaver();
141            }
142        }
143    };
144
145    private View mAlarmButton;
146
147    private void moveScreenSaver() {
148        moveScreenSaverTo(-1,-1);
149    }
150    private void moveScreenSaverTo(int x, int y) {
151        if (!mScreenSaverMode) return;
152
153        final View saver_view = findViewById(R.id.saver_view);
154
155        DisplayMetrics metrics = new DisplayMetrics();
156        getWindowManager().getDefaultDisplay().getMetrics(metrics);
157
158        if (x < 0 || y < 0) {
159            int myWidth = saver_view.getMeasuredWidth();
160            int myHeight = saver_view.getMeasuredHeight();
161            x = (int)(mRNG.nextFloat()*(metrics.widthPixels - myWidth));
162            y = (int)(mRNG.nextFloat()*(metrics.heightPixels - myHeight));
163        }
164
165        if (DEBUG) Log.d(LOG_TAG, String.format("screen saver: %d: jumping to (%d,%d)",
166                System.currentTimeMillis(), x, y));
167
168        saver_view.setLayoutParams(new AbsoluteLayout.LayoutParams(
169            ViewGroup.LayoutParams.WRAP_CONTENT,
170            ViewGroup.LayoutParams.WRAP_CONTENT,
171            x,
172            y));
173
174        // Synchronize our jumping so that it happens exactly on the second.
175        mHandy.sendEmptyMessageDelayed(SCREEN_SAVER_MOVE_MSG,
176            SCREEN_SAVER_MOVE_DELAY +
177            (1000 - (System.currentTimeMillis() % 1000)));
178    }
179
180    private void setWakeLock(boolean hold) {
181        if (DEBUG) Log.d(LOG_TAG, (hold ? "hold" : " releas") + "ing wake lock");
182        Window win = getWindow();
183        WindowManager.LayoutParams winParams = win.getAttributes();
184        winParams.flags |= (WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD
185                | WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
186                | WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON
187                | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
188        if (hold)
189            winParams.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON;
190        else
191            winParams.flags &= (~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
192        win.setAttributes(winParams);
193    }
194
195    private void scheduleScreenSaver() {
196        if (!getResources().getBoolean(R.bool.config_requiresScreenSaver)) {
197            return;
198        }
199
200        // reschedule screen saver
201        mHandy.removeMessages(SCREEN_SAVER_TIMEOUT_MSG);
202        mHandy.sendMessageDelayed(
203            Message.obtain(mHandy, SCREEN_SAVER_TIMEOUT_MSG),
204            SCREEN_SAVER_TIMEOUT);
205    }
206
207    private void restoreScreen() {
208        if (!mScreenSaverMode) return;
209        if (DEBUG) Log.d(LOG_TAG, "restoreScreen");
210        mScreenSaverMode = false;
211
212        initViews();
213        doDim(false); // restores previous dim mode
214
215        scheduleScreenSaver();
216
217        refreshAll();
218    }
219
220    // Special screen-saver mode for OLED displays that burn in quickly
221    private void saveScreen() {
222        if (mScreenSaverMode) return;
223        if (DEBUG) Log.d(LOG_TAG, "saveScreen");
224
225        // quickly stash away the x/y of the current date
226        final View oldTimeDate = findViewById(R.id.time_date);
227        int oldLoc[] = new int[2];
228        oldTimeDate.getLocationOnScreen(oldLoc);
229
230        mScreenSaverMode = true;
231        Window win = getWindow();
232        WindowManager.LayoutParams winParams = win.getAttributes();
233        winParams.flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN;
234        win.setAttributes(winParams);
235
236        // give up any internal focus before we switch layouts
237        final View focused = getCurrentFocus();
238        if (focused != null) focused.clearFocus();
239
240        setContentView(R.layout.desk_clock_saver);
241
242        mTime = (DigitalClock) findViewById(R.id.time);
243        mDate = (TextView) findViewById(R.id.date);
244
245        final int color = mDimmed ? SCREEN_SAVER_COLOR_DIM : SCREEN_SAVER_COLOR;
246
247        ((AndroidClockTextView)findViewById(R.id.timeDisplay)).setTextColor(color);
248        ((AndroidClockTextView)findViewById(R.id.am_pm)).setTextColor(color);
249        mDate.setTextColor(color);
250
251        mTime.setSystemUiVisibility(View.STATUS_BAR_HIDDEN);
252
253        mBatteryDisplay = null;
254
255        refreshDate();
256        refreshAlarm();
257
258        moveScreenSaverTo(oldLoc[0], oldLoc[1]);
259    }
260
261    @Override
262    public void onUserInteraction() {
263        if (mScreenSaverMode)
264            restoreScreen();
265    }
266
267    // Adapted from KeyguardUpdateMonitor.java
268    private void handleBatteryUpdate(int plugged, int status, int level) {
269        final boolean pluggedIn = (plugged != 0);
270        if (pluggedIn != mPluggedIn) {
271            setWakeLock(pluggedIn);
272        }
273        if (pluggedIn != mPluggedIn || level != mBatteryLevel) {
274            mBatteryLevel = level;
275            mPluggedIn = pluggedIn;
276            refreshBattery();
277        }
278    }
279
280    private void refreshBattery() {
281        // UX wants the battery level removed. This makes it not visible but
282        // allows it to be easily turned back on if they change their mind.
283        if (!USE_BATTERY_DISPLAY)
284            return;
285        if (mBatteryDisplay == null) return;
286
287        if (mPluggedIn /* || mBatteryLevel < LOW_BATTERY_THRESHOLD */) {
288            mBatteryDisplay.setCompoundDrawablesWithIntrinsicBounds(
289                0, 0, android.R.drawable.ic_lock_idle_charging, 0);
290            mBatteryDisplay.setText(
291                getString(R.string.battery_charging_level, mBatteryLevel));
292            mBatteryDisplay.setVisibility(View.VISIBLE);
293        } else {
294            mBatteryDisplay.setVisibility(View.INVISIBLE);
295        }
296    }
297
298    private void refreshDate() {
299        final Date now = new Date();
300        if (DEBUG) Log.d(LOG_TAG, "refreshing date..." + now);
301        mDate.setText(DateFormat.format(mDateFormat, now));
302    }
303
304    private void refreshAlarm() {
305        if (mNextAlarm == null) return;
306
307        String nextAlarm = Settings.System.getString(getContentResolver(),
308                Settings.System.NEXT_ALARM_FORMATTED);
309        if (!TextUtils.isEmpty(nextAlarm)) {
310            mNextAlarm.setText(getString(R.string.control_set_alarm_with_existing, nextAlarm));
311            mNextAlarm.setVisibility(View.VISIBLE);
312        } else if (mAlarmButton != null) {
313            mNextAlarm.setVisibility(View.INVISIBLE);
314        } else {
315            mNextAlarm.setText(R.string.control_set_alarm);
316            mNextAlarm.setVisibility(View.VISIBLE);
317        }
318    }
319
320    private void refreshAll() {
321        refreshDate();
322        refreshAlarm();
323        refreshBattery();
324    }
325
326    private void doDim(boolean fade) {
327        View tintView = findViewById(R.id.window_tint);
328        if (tintView == null) return;
329
330        mTime.setSystemUiVisibility(mDimmed ? View.SYSTEM_UI_FLAG_LOW_PROFILE
331                : View.SYSTEM_UI_FLAG_VISIBLE);
332
333        Window win = getWindow();
334        WindowManager.LayoutParams winParams = win.getAttributes();
335
336        winParams.flags |= (WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN);
337        winParams.flags |= (WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);
338
339        // dim the wallpaper somewhat (how much is determined below)
340        winParams.flags |= (WindowManager.LayoutParams.FLAG_DIM_BEHIND);
341
342        if (mDimmed) {
343            winParams.flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN;
344            winParams.dimAmount = DIM_BEHIND_AMOUNT_DIMMED;
345            winParams.buttonBrightness = WindowManager.LayoutParams.BRIGHTNESS_OVERRIDE_OFF;
346
347            // show the window tint
348            tintView.startAnimation(AnimationUtils.loadAnimation(this,
349                fade ? R.anim.dim
350                     : R.anim.dim_instant));
351        } else {
352            winParams.flags &= (~WindowManager.LayoutParams.FLAG_FULLSCREEN);
353            winParams.dimAmount = DIM_BEHIND_AMOUNT_NORMAL;
354            winParams.buttonBrightness = WindowManager.LayoutParams.BRIGHTNESS_OVERRIDE_NONE;
355
356            // hide the window tint
357            tintView.startAnimation(AnimationUtils.loadAnimation(this,
358                fade ? R.anim.undim
359                     : R.anim.undim_instant));
360        }
361
362        win.setAttributes(winParams);
363    }
364
365    @Override
366    public void onNewIntent(Intent newIntent) {
367        super.onNewIntent(newIntent);
368        if (DEBUG) Log.d(LOG_TAG, "onNewIntent with intent: " + newIntent);
369
370        // update our intent so that we can consult it to determine whether or
371        // not the most recent launch was via a dock event
372        setIntent(newIntent);
373    }
374
375    @Override
376    public void onStart() {
377        super.onStart();
378
379        SCREEN_SAVER_COLOR = getResources().getColor(R.color.screen_saver_color);
380        SCREEN_SAVER_COLOR_DIM = getResources().getColor(R.color.screen_saver_dim_color);
381
382        IntentFilter filter = new IntentFilter();
383        filter.addAction(Intent.ACTION_DATE_CHANGED);
384        filter.addAction(Intent.ACTION_BATTERY_CHANGED);
385        filter.addAction(ACTION_MIDNIGHT);
386        registerReceiver(mIntentReceiver, filter);
387    }
388
389    @Override
390    public void onStop() {
391        super.onStop();
392
393        unregisterReceiver(mIntentReceiver);
394    }
395
396    @Override
397    public void onResume() {
398        super.onResume();
399        if (DEBUG) Log.d(LOG_TAG, "onResume with intent: " + getIntent());
400
401        // reload the date format in case the user has changed settings
402        // recently
403        mDateFormat = getString(R.string.full_wday_month_day_no_year);
404
405        // Elaborate mechanism to find out when the day rolls over
406        Calendar today = Calendar.getInstance();
407        today.set(Calendar.HOUR_OF_DAY, 0);
408        today.set(Calendar.MINUTE, 0);
409        today.set(Calendar.SECOND, 0);
410        today.add(Calendar.DATE, 1);
411        long alarmTimeUTC = today.getTimeInMillis();
412
413        mMidnightIntent = PendingIntent.getBroadcast(this, 0, new Intent(ACTION_MIDNIGHT), 0);
414        AlarmManager am = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
415        am.setRepeating(AlarmManager.RTC, alarmTimeUTC, AlarmManager.INTERVAL_DAY, mMidnightIntent);
416        if (DEBUG) Log.d(LOG_TAG, "set repeating midnight event at UTC: "
417            + alarmTimeUTC + " ("
418            + (alarmTimeUTC - System.currentTimeMillis())
419            + " ms from now) repeating every "
420            + AlarmManager.INTERVAL_DAY + " with intent: " + mMidnightIntent);
421
422        // If we weren't previously visible but now we are, it's because we're
423        // being started from another activity. So it's OK to un-dim.
424        if (mTime != null && mTime.getWindowVisibility() != View.VISIBLE) {
425            mDimmed = false;
426        }
427
428        // Adjust the display to reflect the currently chosen dim mode.
429        doDim(false);
430
431        restoreScreen(); // disable screen saver
432        refreshAll(); // will schedule periodic weather fetch
433
434        setWakeLock(mPluggedIn);
435
436        scheduleScreenSaver();
437    }
438
439    @Override
440    public void onPause() {
441        if (DEBUG) Log.d(LOG_TAG, "onPause");
442
443        // Turn off the screen saver and cancel any pending timeouts.
444        // (But don't un-dim.)
445        mHandy.removeMessages(SCREEN_SAVER_TIMEOUT_MSG);
446        restoreScreen();
447
448        AlarmManager am = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
449        am.cancel(mMidnightIntent);
450
451        super.onPause();
452    }
453
454    private void initViews() {
455        // give up any internal focus before we switch layouts
456        final View focused = getCurrentFocus();
457        if (focused != null) focused.clearFocus();
458
459        setContentView(R.layout.desk_clock);
460
461        mTime = (DigitalClock) findViewById(R.id.time);
462        mDate = (TextView) findViewById(R.id.date);
463        mBatteryDisplay = (TextView) findViewById(R.id.battery);
464
465        mTime.setSystemUiVisibility(View.STATUS_BAR_VISIBLE);
466        mTime.getRootView().requestFocus();
467
468        final View.OnClickListener alarmClickListener = new View.OnClickListener() {
469            @Override
470            public void onClick(View v) {
471                mDimmed = false;
472                doDim(true);
473                startActivity(new Intent(DeskClock.this, AlarmClock.class));
474            }
475        };
476
477        mNextAlarm = (TextView) findViewById(R.id.nextAlarm);
478        mNextAlarm.setOnClickListener(alarmClickListener);
479
480        mAlarmButton = findViewById(R.id.alarm_button);
481        View alarmControl = mAlarmButton != null ? mAlarmButton : findViewById(R.id.nextAlarm);
482        alarmControl.setOnClickListener(alarmClickListener);
483
484        View touchView = findViewById(R.id.window_touch);
485        touchView.setOnClickListener(new View.OnClickListener() {
486            @Override
487            public void onClick(View v) {
488                // If the screen saver is on let onUserInteraction handle it
489                if (!mScreenSaverMode) {
490                    mDimmed = !mDimmed;
491                    doDim(true);
492                }
493            }
494        });
495        touchView.setOnLongClickListener(new View.OnLongClickListener() {
496            @Override
497            public boolean onLongClick(View v) {
498                saveScreen();
499                return true;
500            }
501        });
502    }
503
504    @Override
505    public void onConfigurationChanged(Configuration newConfig) {
506        super.onConfigurationChanged(newConfig);
507        if (mScreenSaverMode) {
508            moveScreenSaver();
509        } else {
510            initViews();
511            doDim(false);
512            refreshAll();
513        }
514    }
515
516    @Override
517    protected void onCreate(Bundle icicle) {
518        super.onCreate(icicle);
519
520        mRNG = new Random();
521
522        initViews();
523    }
524}
525