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 * DeskClock clock view for desk docks.
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    // Intent to broadcast for dock settings.
83    private static final String DOCK_SETTINGS_ACTION = "com.android.settings.DOCK_SETTINGS";
84
85    // Delay before engaging the burn-in protection mode (green-on-black).
86    private final long SCREEN_SAVER_TIMEOUT = 5 * 60 * 1000; // 5 min
87
88    // Repositioning delay in screen saver.
89    public static final long SCREEN_SAVER_MOVE_DELAY = 60 * 1000; // 1 min
90
91    // Color to use for text & graphics in screen saver mode.
92    private int SCREEN_SAVER_COLOR = 0xFF006688;
93    private int SCREEN_SAVER_COLOR_DIM = 0xFF001634;
94
95    // Opacity of black layer between clock display and wallpaper.
96    private final float DIM_BEHIND_AMOUNT_NORMAL = 0.4f;
97    private final float DIM_BEHIND_AMOUNT_DIMMED = 0.8f; // higher contrast when display dimmed
98
99    private final int SCREEN_SAVER_TIMEOUT_MSG   = 0x2000;
100    private final int SCREEN_SAVER_MOVE_MSG      = 0x2001;
101
102    // State variables follow.
103    private DigitalClock mTime;
104    private TextView mDate;
105
106    private TextView mNextAlarm = null;
107    private TextView mBatteryDisplay;
108
109    private boolean mDimmed = false;
110    private boolean mScreenSaverMode = false;
111
112    private String mDateFormat;
113
114    private int mBatteryLevel = -1;
115    private boolean mPluggedIn = false;
116
117    private boolean mLaunchedFromDock = false;
118
119    private Random mRNG;
120
121    private PendingIntent mMidnightIntent;
122
123    private final BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
124        @Override
125        public void onReceive(Context context, Intent intent) {
126            final String action = intent.getAction();
127            if (DEBUG) Log.d(LOG_TAG, "mIntentReceiver.onReceive: action=" + action + ", intent=" + intent);
128            if (Intent.ACTION_DATE_CHANGED.equals(action) || ACTION_MIDNIGHT.equals(action)) {
129                refreshDate();
130            } else if (Intent.ACTION_BATTERY_CHANGED.equals(action)) {
131                handleBatteryUpdate(
132                    intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, 0),
133                    intent.getIntExtra(BatteryManager.EXTRA_STATUS, BATTERY_STATUS_UNKNOWN),
134                    intent.getIntExtra(BatteryManager.EXTRA_LEVEL, 0));
135            } else if (UiModeManager.ACTION_EXIT_DESK_MODE.equals(action)) {
136                if (mLaunchedFromDock) {
137                    // moveTaskToBack(false);
138                    finish();
139                }
140                mLaunchedFromDock = false;
141            }
142        }
143    };
144
145    private final Handler mHandy = new Handler() {
146        @Override
147        public void handleMessage(Message m) {
148            if (m.what == SCREEN_SAVER_TIMEOUT_MSG) {
149                saveScreen();
150            } else if (m.what == SCREEN_SAVER_MOVE_MSG) {
151                moveScreenSaver();
152            }
153        }
154    };
155
156    private View mAlarmButton;
157
158    private void moveScreenSaver() {
159        moveScreenSaverTo(-1,-1);
160    }
161    private void moveScreenSaverTo(int x, int y) {
162        if (!mScreenSaverMode) return;
163
164        final View saver_view = findViewById(R.id.saver_view);
165
166        DisplayMetrics metrics = new DisplayMetrics();
167        getWindowManager().getDefaultDisplay().getMetrics(metrics);
168
169        if (x < 0 || y < 0) {
170            int myWidth = saver_view.getMeasuredWidth();
171            int myHeight = saver_view.getMeasuredHeight();
172            x = (int)(mRNG.nextFloat()*(metrics.widthPixels - myWidth));
173            y = (int)(mRNG.nextFloat()*(metrics.heightPixels - myHeight));
174        }
175
176        if (DEBUG) Log.d(LOG_TAG, String.format("screen saver: %d: jumping to (%d,%d)",
177                System.currentTimeMillis(), x, y));
178
179        saver_view.setLayoutParams(new AbsoluteLayout.LayoutParams(
180            ViewGroup.LayoutParams.WRAP_CONTENT,
181            ViewGroup.LayoutParams.WRAP_CONTENT,
182            x,
183            y));
184
185        // Synchronize our jumping so that it happens exactly on the second.
186        mHandy.sendEmptyMessageDelayed(SCREEN_SAVER_MOVE_MSG,
187            SCREEN_SAVER_MOVE_DELAY +
188            (1000 - (System.currentTimeMillis() % 1000)));
189    }
190
191    private void setWakeLock(boolean hold) {
192        if (DEBUG) Log.d(LOG_TAG, (hold ? "hold" : " releas") + "ing wake lock");
193        Window win = getWindow();
194        WindowManager.LayoutParams winParams = win.getAttributes();
195        winParams.flags |= (WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD
196                | WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
197                | WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON
198                | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
199        if (hold)
200            winParams.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON;
201        else
202            winParams.flags &= (~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
203        win.setAttributes(winParams);
204    }
205
206    private void scheduleScreenSaver() {
207        if (!getResources().getBoolean(R.bool.config_requiresScreenSaver)) {
208            return;
209        }
210
211        // reschedule screen saver
212        mHandy.removeMessages(SCREEN_SAVER_TIMEOUT_MSG);
213        mHandy.sendMessageDelayed(
214            Message.obtain(mHandy, SCREEN_SAVER_TIMEOUT_MSG),
215            SCREEN_SAVER_TIMEOUT);
216    }
217
218    private void restoreScreen() {
219        if (!mScreenSaverMode) return;
220        if (DEBUG) Log.d(LOG_TAG, "restoreScreen");
221        mScreenSaverMode = false;
222
223        initViews();
224        doDim(false); // restores previous dim mode
225
226        scheduleScreenSaver();
227
228        refreshAll();
229    }
230
231    // Special screen-saver mode for OLED displays that burn in quickly
232    private void saveScreen() {
233        if (mScreenSaverMode) return;
234        if (DEBUG) Log.d(LOG_TAG, "saveScreen");
235
236        // quickly stash away the x/y of the current date
237        final View oldTimeDate = findViewById(R.id.time_date);
238        int oldLoc[] = new int[2];
239        oldTimeDate.getLocationOnScreen(oldLoc);
240
241        mScreenSaverMode = true;
242        Window win = getWindow();
243        WindowManager.LayoutParams winParams = win.getAttributes();
244        winParams.flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN;
245        win.setAttributes(winParams);
246
247        // give up any internal focus before we switch layouts
248        final View focused = getCurrentFocus();
249        if (focused != null) focused.clearFocus();
250
251        setContentView(R.layout.desk_clock_saver);
252
253        mTime = (DigitalClock) findViewById(R.id.time);
254        mDate = (TextView) findViewById(R.id.date);
255
256        final int color = mDimmed ? SCREEN_SAVER_COLOR_DIM : SCREEN_SAVER_COLOR;
257
258        ((AndroidClockTextView)findViewById(R.id.timeDisplay)).setTextColor(color);
259        ((AndroidClockTextView)findViewById(R.id.am_pm)).setTextColor(color);
260        mDate.setTextColor(color);
261
262        mTime.setSystemUiVisibility(View.STATUS_BAR_HIDDEN);
263
264        mBatteryDisplay = null;
265
266        refreshDate();
267        refreshAlarm();
268
269        moveScreenSaverTo(oldLoc[0], oldLoc[1]);
270    }
271
272    @Override
273    public void onUserInteraction() {
274        if (mScreenSaverMode)
275            restoreScreen();
276    }
277
278    // Adapted from KeyguardUpdateMonitor.java
279    private void handleBatteryUpdate(int plugged, int status, int level) {
280        final boolean pluggedIn = (plugged != 0);
281        if (pluggedIn != mPluggedIn) {
282            setWakeLock(pluggedIn);
283        }
284        if (pluggedIn != mPluggedIn || level != mBatteryLevel) {
285            mBatteryLevel = level;
286            mPluggedIn = pluggedIn;
287            refreshBattery();
288        }
289    }
290
291    private void refreshBattery() {
292        // UX wants the battery level removed. This makes it not visible but
293        // allows it to be easily turned back on if they change their mind.
294        if (!USE_BATTERY_DISPLAY)
295            return;
296        if (mBatteryDisplay == null) return;
297
298        if (mPluggedIn /* || mBatteryLevel < LOW_BATTERY_THRESHOLD */) {
299            mBatteryDisplay.setCompoundDrawablesWithIntrinsicBounds(
300                0, 0, android.R.drawable.ic_lock_idle_charging, 0);
301            mBatteryDisplay.setText(
302                getString(R.string.battery_charging_level, mBatteryLevel));
303            mBatteryDisplay.setVisibility(View.VISIBLE);
304        } else {
305            mBatteryDisplay.setVisibility(View.INVISIBLE);
306        }
307    }
308
309    private void refreshDate() {
310        final Date now = new Date();
311        if (DEBUG) Log.d(LOG_TAG, "refreshing date..." + now);
312        mDate.setText(DateFormat.format(mDateFormat, now));
313    }
314
315    private void refreshAlarm() {
316        if (mNextAlarm == null) return;
317
318        String nextAlarm = Settings.System.getString(getContentResolver(),
319                Settings.System.NEXT_ALARM_FORMATTED);
320        if (!TextUtils.isEmpty(nextAlarm)) {
321            mNextAlarm.setText(getString(R.string.control_set_alarm_with_existing, nextAlarm));
322            mNextAlarm.setVisibility(View.VISIBLE);
323        } else if (mAlarmButton != null) {
324            mNextAlarm.setVisibility(View.INVISIBLE);
325        } else {
326            mNextAlarm.setText(R.string.control_set_alarm);
327            mNextAlarm.setVisibility(View.VISIBLE);
328        }
329    }
330
331    private void refreshAll() {
332        refreshDate();
333        refreshAlarm();
334        refreshBattery();
335    }
336
337    private void doDim(boolean fade) {
338        View tintView = findViewById(R.id.window_tint);
339        if (tintView == null) return;
340
341        mTime.setSystemUiVisibility(mDimmed ? View.SYSTEM_UI_FLAG_LOW_PROFILE
342                : View.SYSTEM_UI_FLAG_VISIBLE);
343
344        Window win = getWindow();
345        WindowManager.LayoutParams winParams = win.getAttributes();
346
347        winParams.flags |= (WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN);
348        winParams.flags |= (WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);
349
350        // dim the wallpaper somewhat (how much is determined below)
351        winParams.flags |= (WindowManager.LayoutParams.FLAG_DIM_BEHIND);
352
353        if (mDimmed) {
354            winParams.flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN;
355            winParams.dimAmount = DIM_BEHIND_AMOUNT_DIMMED;
356            winParams.buttonBrightness = WindowManager.LayoutParams.BRIGHTNESS_OVERRIDE_OFF;
357
358            // show the window tint
359            tintView.startAnimation(AnimationUtils.loadAnimation(this,
360                fade ? R.anim.dim
361                     : R.anim.dim_instant));
362        } else {
363            winParams.flags &= (~WindowManager.LayoutParams.FLAG_FULLSCREEN);
364            winParams.dimAmount = DIM_BEHIND_AMOUNT_NORMAL;
365            winParams.buttonBrightness = WindowManager.LayoutParams.BRIGHTNESS_OVERRIDE_NONE;
366
367            // hide the window tint
368            tintView.startAnimation(AnimationUtils.loadAnimation(this,
369                fade ? R.anim.undim
370                     : R.anim.undim_instant));
371        }
372
373        win.setAttributes(winParams);
374    }
375
376    @Override
377    public void onNewIntent(Intent newIntent) {
378        super.onNewIntent(newIntent);
379        if (DEBUG) Log.d(LOG_TAG, "onNewIntent with intent: " + newIntent);
380
381        // update our intent so that we can consult it to determine whether or
382        // not the most recent launch was via a dock event
383        setIntent(newIntent);
384    }
385
386    @Override
387    public void onStart() {
388        super.onStart();
389
390        SCREEN_SAVER_COLOR = getResources().getColor(R.color.screen_saver_color);
391        SCREEN_SAVER_COLOR_DIM = getResources().getColor(R.color.screen_saver_dim_color);
392
393        IntentFilter filter = new IntentFilter();
394        filter.addAction(Intent.ACTION_DATE_CHANGED);
395        filter.addAction(Intent.ACTION_BATTERY_CHANGED);
396        filter.addAction(UiModeManager.ACTION_EXIT_DESK_MODE);
397        filter.addAction(ACTION_MIDNIGHT);
398        registerReceiver(mIntentReceiver, filter);
399    }
400
401    @Override
402    public void onStop() {
403        super.onStop();
404
405        unregisterReceiver(mIntentReceiver);
406    }
407
408    @Override
409    public void onResume() {
410        super.onResume();
411        if (DEBUG) Log.d(LOG_TAG, "onResume with intent: " + getIntent());
412
413        // reload the date format in case the user has changed settings
414        // recently
415        mDateFormat = getString(R.string.full_wday_month_day_no_year);
416
417        // Elaborate mechanism to find out when the day rolls over
418        Calendar today = Calendar.getInstance();
419        today.set(Calendar.HOUR_OF_DAY, 0);
420        today.set(Calendar.MINUTE, 0);
421        today.set(Calendar.SECOND, 0);
422        today.add(Calendar.DATE, 1);
423        long alarmTimeUTC = today.getTimeInMillis();
424
425        mMidnightIntent = PendingIntent.getBroadcast(this, 0, new Intent(ACTION_MIDNIGHT), 0);
426        AlarmManager am = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
427        am.setRepeating(AlarmManager.RTC, alarmTimeUTC, AlarmManager.INTERVAL_DAY, mMidnightIntent);
428        if (DEBUG) Log.d(LOG_TAG, "set repeating midnight event at UTC: "
429            + alarmTimeUTC + " ("
430            + (alarmTimeUTC - System.currentTimeMillis())
431            + " ms from now) repeating every "
432            + AlarmManager.INTERVAL_DAY + " with intent: " + mMidnightIntent);
433
434        // If we weren't previously visible but now we are, it's because we're
435        // being started from another activity. So it's OK to un-dim.
436        if (mTime != null && mTime.getWindowVisibility() != View.VISIBLE) {
437            mDimmed = false;
438        }
439
440        // Adjust the display to reflect the currently chosen dim mode.
441        doDim(false);
442
443        restoreScreen(); // disable screen saver
444        refreshAll(); // will schedule periodic weather fetch
445
446        setWakeLock(mPluggedIn);
447
448        scheduleScreenSaver();
449
450        final boolean launchedFromDock
451            = getIntent().hasCategory(Intent.CATEGORY_DESK_DOCK);
452
453        mLaunchedFromDock = launchedFromDock;
454    }
455
456    @Override
457    public void onPause() {
458        if (DEBUG) Log.d(LOG_TAG, "onPause");
459
460        // Turn off the screen saver and cancel any pending timeouts.
461        // (But don't un-dim.)
462        mHandy.removeMessages(SCREEN_SAVER_TIMEOUT_MSG);
463        restoreScreen();
464
465        AlarmManager am = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
466        am.cancel(mMidnightIntent);
467
468        super.onPause();
469    }
470
471    private void initViews() {
472        // give up any internal focus before we switch layouts
473        final View focused = getCurrentFocus();
474        if (focused != null) focused.clearFocus();
475
476        setContentView(R.layout.desk_clock);
477
478        mTime = (DigitalClock) findViewById(R.id.time);
479        mDate = (TextView) findViewById(R.id.date);
480        mBatteryDisplay = (TextView) findViewById(R.id.battery);
481
482        mTime.setSystemUiVisibility(View.STATUS_BAR_VISIBLE);
483        mTime.getRootView().requestFocus();
484
485        final View.OnClickListener alarmClickListener = new View.OnClickListener() {
486            @Override
487            public void onClick(View v) {
488                mDimmed = false;
489                doDim(true);
490                startActivity(new Intent(DeskClock.this, AlarmClock.class));
491            }
492        };
493
494        mNextAlarm = (TextView) findViewById(R.id.nextAlarm);
495        mNextAlarm.setOnClickListener(alarmClickListener);
496
497        mAlarmButton = findViewById(R.id.alarm_button);
498        View alarmControl = mAlarmButton != null ? mAlarmButton : findViewById(R.id.nextAlarm);
499        alarmControl.setOnClickListener(alarmClickListener);
500
501        View touchView = findViewById(R.id.window_touch);
502        touchView.setOnClickListener(new View.OnClickListener() {
503            @Override
504            public void onClick(View v) {
505                // If the screen saver is on let onUserInteraction handle it
506                if (!mScreenSaverMode) {
507                    mDimmed = !mDimmed;
508                    doDim(true);
509                }
510            }
511        });
512        touchView.setOnLongClickListener(new View.OnLongClickListener() {
513            @Override
514            public boolean onLongClick(View v) {
515                saveScreen();
516                return true;
517            }
518        });
519    }
520
521    @Override
522    public void onConfigurationChanged(Configuration newConfig) {
523        super.onConfigurationChanged(newConfig);
524        if (mScreenSaverMode) {
525            moveScreenSaver();
526        } else {
527            initViews();
528            doDim(false);
529            refreshAll();
530        }
531    }
532
533    @Override
534    public boolean onOptionsItemSelected(MenuItem item) {
535        switch (item.getItemId()) {
536            case R.id.menu_item_dock_settings:
537                startActivity(new Intent(DOCK_SETTINGS_ACTION));
538                return true;
539            default:
540                return false;
541        }
542    }
543
544    @Override
545    public boolean onCreateOptionsMenu(Menu menu) {
546        MenuInflater inflater = getMenuInflater();
547        inflater.inflate(R.menu.desk_clock_menu, menu);
548        return true;
549    }
550
551    @Override
552    public boolean onPrepareOptionsMenu(Menu menu) {
553        // Only show the "Dock settings" menu item if the device supports it.
554        boolean isDockSupported =
555                (getPackageManager().resolveActivity(new Intent(DOCK_SETTINGS_ACTION), 0) != null);
556        menu.findItem(R.id.menu_item_dock_settings).setVisible(isDockSupported);
557        return super.onPrepareOptionsMenu(menu);
558    }
559
560    @Override
561    protected void onCreate(Bundle icicle) {
562        super.onCreate(icicle);
563
564        mRNG = new Random();
565
566        initViews();
567    }
568}
569