DisplaySettings.java revision 992f10240d0bfd78bb99855fe23ec7a1b61a2551 
1/*
2 * Copyright (C) 2010 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.settings;
18
19import static android.provider.Settings.System.SCREEN_OFF_TIMEOUT;
20
21import com.android.settings.bluetooth.DockEventReceiver;
22
23import android.content.BroadcastReceiver;
24import android.content.ContentResolver;
25import android.content.Context;
26import android.content.Intent;
27import android.content.IntentFilter;
28import android.media.AudioManager;
29import android.os.Bundle;
30import android.os.IMountService;
31import android.os.RemoteException;
32import android.os.ServiceManager;
33import android.preference.CheckBoxPreference;
34import android.preference.ListPreference;
35import android.preference.Preference;
36import android.preference.PreferenceActivity;
37import android.preference.PreferenceGroup;
38import android.preference.PreferenceScreen;
39import android.provider.Settings;
40import android.provider.Settings.SettingNotFoundException;
41import android.telephony.TelephonyManager;
42import android.util.Log;
43import android.view.IWindowManager;
44
45public class DisplaySettings extends PreferenceActivity implements
46        Preference.OnPreferenceChangeListener {
47    private static final String TAG = "DisplaySettings";
48
49    /** If there is no setting in the provider, use this. */
50    private static final int FALLBACK_SCREEN_TIMEOUT_VALUE = 30000;
51
52    private static final String KEY_SCREEN_TIMEOUT = "screen_timeout";
53    private static final String KEY_ANIMATIONS = "animations";
54    private static final String KEY_ACCELEROMETER = "accelerometer";
55
56    private ListPreference mAnimations;
57    private CheckBoxPreference mAccelerometer;
58    private float[] mAnimationScales;
59
60    private IWindowManager mWindowManager;
61
62    @Override
63    protected void onCreate(Bundle savedInstanceState) {
64        super.onCreate(savedInstanceState);
65        ContentResolver resolver = getContentResolver();
66        mWindowManager = IWindowManager.Stub.asInterface(ServiceManager.getService("window"));
67
68        addPreferencesFromResource(R.xml.display_settings);
69
70        mAnimations = (ListPreference) findPreference(KEY_ANIMATIONS);
71        mAnimations.setOnPreferenceChangeListener(this);
72        mAccelerometer = (CheckBoxPreference) findPreference(KEY_ACCELEROMETER);
73        mAccelerometer.setPersistent(false);
74
75        ListPreference screenTimeoutPreference =
76            (ListPreference) findPreference(KEY_SCREEN_TIMEOUT);
77        screenTimeoutPreference.setValue(String.valueOf(Settings.System.getInt(
78                resolver, SCREEN_OFF_TIMEOUT, FALLBACK_SCREEN_TIMEOUT_VALUE)));
79        screenTimeoutPreference.setOnPreferenceChangeListener(this);
80
81    }
82
83    @Override
84    protected void onResume() {
85        super.onResume();
86
87        updateState(true);
88    }
89
90    private void updateState(boolean force) {
91        int animations = 0;
92        try {
93            mAnimationScales = mWindowManager.getAnimationScales();
94        } catch (RemoteException e) {
95        }
96        if (mAnimationScales != null) {
97            if (mAnimationScales.length >= 1) {
98                animations = ((int)(mAnimationScales[0]+.5f)) % 10;
99            }
100            if (mAnimationScales.length >= 2) {
101                animations += (((int)(mAnimationScales[1]+.5f)) & 0x7) * 10;
102            }
103        }
104        int idx = 0;
105        int best = 0;
106        CharSequence[] aents = mAnimations.getEntryValues();
107        for (int i=0; i<aents.length; i++) {
108            int val = Integer.parseInt(aents[i].toString());
109            if (val <= animations && val > best) {
110                best = val;
111                idx = i;
112            }
113        }
114        mAnimations.setValueIndex(idx);
115        updateAnimationsSummary(mAnimations.getValue());
116        mAccelerometer.setChecked(Settings.System.getInt(
117                getContentResolver(),
118                Settings.System.ACCELEROMETER_ROTATION, 0) != 0);
119    }
120
121    private void updateAnimationsSummary(Object value) {
122        CharSequence[] summaries = getResources().getTextArray(R.array.animations_summaries);
123        CharSequence[] values = mAnimations.getEntryValues();
124        for (int i=0; i<values.length; i++) {
125            //Log.i("foo", "Comparing entry "+ values[i] + " to current "
126            //        + mAnimations.getValue());
127            if (values[i].equals(value)) {
128                mAnimations.setSummary(summaries[i]);
129                break;
130            }
131        }
132    }
133
134    @Override
135    public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
136        if (preference == mAccelerometer) {
137            Settings.System.putInt(getContentResolver(),
138                    Settings.System.ACCELEROMETER_ROTATION,
139                    mAccelerometer.isChecked() ? 1 : 0);
140        }
141        return true;
142    }
143
144    public boolean onPreferenceChange(Preference preference, Object objValue) {
145        final String key = preference.getKey();
146        if (KEY_ANIMATIONS.equals(key)) {
147            try {
148                int value = Integer.parseInt((String) objValue);
149                if (mAnimationScales.length >= 1) {
150                    mAnimationScales[0] = value%10;
151                }
152                if (mAnimationScales.length >= 2) {
153                    mAnimationScales[1] = (value/10)%10;
154                }
155                try {
156                    mWindowManager.setAnimationScales(mAnimationScales);
157                } catch (RemoteException e) {
158                }
159                updateAnimationsSummary(objValue);
160            } catch (NumberFormatException e) {
161                Log.e(TAG, "could not persist animation setting", e);
162            }
163
164        }
165        if (KEY_SCREEN_TIMEOUT.equals(key)) {
166            int value = Integer.parseInt((String) objValue);
167            try {
168                Settings.System.putInt(getContentResolver(),
169                        SCREEN_OFF_TIMEOUT, value);
170            } catch (NumberFormatException e) {
171                Log.e(TAG, "could not persist screen timeout setting", e);
172            }
173        }
174
175        return true;
176    }
177}
178