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+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtSensors module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia. For licensing terms and
+** conditions see http://qt.digia.com/licensing. For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights. These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#import <UIKit/UIDevice.h>
+
+#include "iosproximitysensor.h"
+
+char const * const IOSProximitySensor::id("ios.proximitysensor");
+
+QT_BEGIN_NAMESPACE
+
+@interface ProximitySensorCallback : NSObject
+{
+ IOSProximitySensor *m_iosProximitySensor;
+}
+@end
+
+@implementation ProximitySensorCallback
+
+- (id)initWithQIOSProximitySensor:(IOSProximitySensor *)iosProximitySensor
+{
+ self = [super init];
+ if (self) {
+ m_iosProximitySensor = iosProximitySensor;
+ [[NSNotificationCenter defaultCenter]
+ addObserver:self
+ selector:@selector(proximityChanged:)
+ name:@"UIDeviceProximityStateDidChangeNotification" object:nil];
+ }
+ return self;
+}
+
+-(void) dealloc
+{
+ [[NSNotificationCenter defaultCenter]
+ removeObserver:self
+ name:@"UIDeviceProximityStateDidChangeNotification" object:nil];
+ [super dealloc];
+}
+
+- (void)proximityChanged:(NSNotificationCenter *)notification
+{
+ Q_UNUSED(notification);
+ bool close = [[UIDevice currentDevice] proximityState] == YES;
+ m_iosProximitySensor->proximityChanged(close);
+}
+
+@end
+
+bool IOSProximitySensor::available()
+{
+ UIDevice *device = [UIDevice currentDevice];
+ if (device.proximityMonitoringEnabled)
+ return true;
+ // According to the docs, you need to switch it on and
+ // re-read the property to check if it is available:
+ device.proximityMonitoringEnabled = YES;
+ bool available = device.proximityMonitoringEnabled;
+ device.proximityMonitoringEnabled = NO;
+ return available;
+}
+
+IOSProximitySensor::IOSProximitySensor(QSensor *sensor)
+ : QSensorBackend(sensor)
+ , m_proximitySensorCallback(0)
+{
+ setReading<QProximityReading>(&m_reading);
+}
+
+IOSProximitySensor::~IOSProximitySensor()
+{
+ [m_proximitySensorCallback release];
+}
+
+void IOSProximitySensor::start()
+{
+ m_proximitySensorCallback = [[ProximitySensorCallback alloc] initWithQIOSProximitySensor:this];
+ [UIDevice currentDevice].proximityMonitoringEnabled = YES;
+}
+
+void IOSProximitySensor::proximityChanged(bool close)
+{
+ m_reading.setClose(close);
+ m_reading.setTimestamp(quint64([[NSDate date] timeIntervalSinceReferenceDate] * 1e6));
+ newReadingAvailable();
+}
+
+void IOSProximitySensor::stop()
+{
+ [UIDevice currentDevice].proximityMonitoringEnabled = NO;
+ [m_proximitySensorCallback release];
+ m_proximitySensorCallback = 0;
+}
+
+QT_END_NAMESPACE