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