| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.inputmethod.latin; |
| |
| import android.content.Context; |
| import android.media.AudioManager; |
| import android.os.Vibrator; |
| import android.view.HapticFeedbackConstants; |
| import android.view.View; |
| |
| /** |
| * This class gathers audio feedback and haptic feedback functions. |
| * |
| * It offers a consistent and simple interface that allows LatinIME to forget about the |
| * complexity of settings and the like. |
| */ |
| public final class AudioAndHapticFeedbackManager { |
| private AudioManager mAudioManager; |
| private Vibrator mVibrator; |
| |
| private SettingsValues mSettingsValues; |
| private boolean mSoundOn; |
| |
| private static final AudioAndHapticFeedbackManager sInstance = |
| new AudioAndHapticFeedbackManager(); |
| |
| public static AudioAndHapticFeedbackManager getInstance() { |
| return sInstance; |
| } |
| |
| private AudioAndHapticFeedbackManager() { |
| // Intentional empty constructor for singleton. |
| } |
| |
| public static void init(final Context context) { |
| sInstance.initInternal(context); |
| } |
| |
| private void initInternal(final Context context) { |
| mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE); |
| mVibrator = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE); |
| } |
| |
| public void hapticAndAudioFeedback(final int primaryCode, |
| final View viewToPerformHapticFeedbackOn) { |
| vibrateInternal(viewToPerformHapticFeedbackOn); |
| playKeyClick(primaryCode); |
| } |
| |
| public boolean hasVibrator() { |
| return mVibrator != null && mVibrator.hasVibrator(); |
| } |
| |
| public void vibrate(final long milliseconds) { |
| if (mVibrator == null) { |
| return; |
| } |
| mVibrator.vibrate(milliseconds); |
| } |
| |
| private boolean reevaluateIfSoundIsOn() { |
| if (mSettingsValues == null || !mSettingsValues.mSoundOn || mAudioManager == null) { |
| return false; |
| } |
| return mAudioManager.getRingerMode() == AudioManager.RINGER_MODE_NORMAL; |
| } |
| |
| private void playKeyClick(final int primaryCode) { |
| // if mAudioManager is null, we can't play a sound anyway, so return |
| if (mAudioManager == null) { |
| return; |
| } |
| if (mSoundOn) { |
| final int sound; |
| switch (primaryCode) { |
| case Constants.CODE_DELETE: |
| sound = AudioManager.FX_KEYPRESS_DELETE; |
| break; |
| case Constants.CODE_ENTER: |
| sound = AudioManager.FX_KEYPRESS_RETURN; |
| break; |
| case Constants.CODE_SPACE: |
| sound = AudioManager.FX_KEYPRESS_SPACEBAR; |
| break; |
| default: |
| sound = AudioManager.FX_KEYPRESS_STANDARD; |
| break; |
| } |
| mAudioManager.playSoundEffect(sound, mSettingsValues.mKeypressSoundVolume); |
| } |
| } |
| |
| private void vibrateInternal(final View viewToPerformHapticFeedbackOn) { |
| if (!mSettingsValues.mVibrateOn) { |
| return; |
| } |
| if (mSettingsValues.mKeypressVibrationDuration < 0) { |
| // Go ahead with the system default |
| if (viewToPerformHapticFeedbackOn != null) { |
| viewToPerformHapticFeedbackOn.performHapticFeedback( |
| HapticFeedbackConstants.KEYBOARD_TAP, |
| HapticFeedbackConstants.FLAG_IGNORE_GLOBAL_SETTING); |
| } |
| return; |
| } |
| vibrate(mSettingsValues.mKeypressVibrationDuration); |
| } |
| |
| public void onSettingsChanged(final SettingsValues settingsValues) { |
| mSettingsValues = settingsValues; |
| mSoundOn = reevaluateIfSoundIsOn(); |
| } |
| |
| public void onRingerModeChanged() { |
| mSoundOn = reevaluateIfSoundIsOn(); |
| } |
| } |