/*
* Catroid: An on-device visual programming system for Android devices
* Copyright (C) 2010-2016 The Catrobat Team
* (<http://developer.catrobat.org/credits>)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* An additional term exception under section 7 of the GNU Affero
* General Public License, version 3, is available at
* http://developer.catrobat.org/license_additional_term
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.catrobat.catroid.utils;
import android.content.Context;
import android.os.SystemClock;
import android.os.Vibrator;
import android.util.Log;
import java.util.concurrent.Semaphore;
import static android.content.Context.VIBRATOR_SERVICE;
public final class VibratorUtil {
private static final String TAG = VibratorUtil.class.getSimpleName();
private static Context context = null;
private static Vibrator vibrator = null;
private static boolean keepAlive = false;
private static boolean paused = false;
private static Semaphore vibratorThreadSemaphore = new Semaphore(1);
private static long startTime = 0L;
private static long timeToVibrate = 0L;
private static long savedTimeToVibrate = 0L;
private static final int MAX_TIME_TO_VIBRATE = 60000;
private VibratorUtil() {
}
private static Thread vibratorThread = null;
public static void setTimeToVibrate(double timeInMillis) {
Log.d(TAG, "setTimeToVibrate()");
timeToVibrate = (long) timeInMillis;
if (vibratorThreadSemaphore.hasQueuedThreads()) {
vibratorThreadSemaphore.release();
} else {
startTime = SystemClock.uptimeMillis();
}
}
public static long getTimeToVibrate() {
long currentTime = SystemClock.uptimeMillis();
long timePassed = currentTime - startTime;
if ((timeToVibrate - timePassed) < 0) {
return 0;
}
return timeToVibrate - timePassed;
}
public static void pauseVibrator() {
Log.d(TAG, "pauseVibrator()");
if (paused) {
return;
}
if ((startTime + timeToVibrate) > SystemClock.uptimeMillis()) {
savedTimeToVibrate = timeToVibrate - (SystemClock.uptimeMillis() - startTime);
Log.d(TAG, "PAUSED! time left was: " + Long.toString(savedTimeToVibrate));
} else {
savedTimeToVibrate = 0;
}
timeToVibrate = 0;
killVibratorThread();
paused = true;
}
public static void resumeVibrator() {
Log.d(TAG, "resumeVibrator()");
if (paused) {
timeToVibrate = savedTimeToVibrate;
Log.d(TAG, "savedTimeToVibrate = " + savedTimeToVibrate);
savedTimeToVibrate = 0;
keepAlive = true;
activateVibratorThread();
if (timeToVibrate > 0) {
vibratorThreadSemaphore.release();
} else {
Log.d(TAG, "nothing to do");
}
}
paused = false;
}
public static void destroy() {
Log.d(TAG, "reset() - called by StageActivity::onDestroy");
startTime = 0L;
timeToVibrate = 0L;
savedTimeToVibrate = 0L;
keepAlive = false;
if (vibratorThreadSemaphore.hasQueuedThreads()) {
vibratorThreadSemaphore.release();
}
paused = false;
context = null;
vibrator = null;
vibratorThread = null;
}
public static void reset() {
setTimeToVibrate(0.0);
}
public static void setContext(Context stageContext) {
context = stageContext;
}
public static boolean isActive() {
return keepAlive;
}
public static void activateVibratorThread() {
Log.d(TAG, "activateVibratorThread");
if (context == null) {
Log.e(TAG, "ERROR: set Context first!");
return;
}
if (vibratorThread == null) {
vibratorThread = new Thread(new Runnable() {
@Override
public void run() {
while (keepAlive) {
try {
vibratorThreadSemaphore.acquire();
startVibrate();
while ((startTime + timeToVibrate) > SystemClock.uptimeMillis()) {
Thread.yield();
}
stopVibrate();
} catch (InterruptedException e) {
Log.e(TAG, "vibratorThreadSemaphore! " + e.getMessage());
}
}
vibratorThreadSemaphore.release();
}
});
}
if (vibrator == null) {
vibrator = (Vibrator) context.getSystemService(VIBRATOR_SERVICE);
}
if (!vibratorThread.isAlive()) {
try {
vibratorThreadSemaphore.acquire();
} catch (InterruptedException e) {
Log.e(TAG, "vibratorThreadSemaphore! " + e.getMessage());
}
keepAlive = true;
vibratorThread.setName("vibratorThread");
Log.d(TAG, "starting thread...");
vibratorThread.start();
}
}
private static void killVibratorThread() {
Log.d(TAG, "destroy()");
keepAlive = false;
if (vibratorThreadSemaphore.hasQueuedThreads()) {
vibratorThreadSemaphore.release();
}
startTime = 0;
timeToVibrate = 0;
vibratorThread = null;
}
private static synchronized void startVibrate() {
if (vibrator != null) {
Log.d(TAG, "startVibrate()");
startTime = SystemClock.uptimeMillis();
vibrator.vibrate(MAX_TIME_TO_VIBRATE);
Log.d(TAG, "start time was: " + Long.toString(startTime));
}
}
private static synchronized void stopVibrate() {
if (vibrator != null) {
Log.d(TAG, "stopVibrate()");
vibrator.cancel();
}
}
}