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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtSensors module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
****************************************************************************/
#import <UIKit/UIDevice.h>
#include "iosproximitysensor.h"
char const * const IOSProximitySensor::id("ios.proximitysensor");
QT_BEGIN_NAMESPACE
int IOSProximitySensor::s_startCount = 0;
@interface ProximitySensorCallback : NSObject
{
}
@end
@implementation ProximitySensorCallback {
IOSProximitySensor *m_iosProximitySensor;
}
- (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()
{
if (m_proximitySensorCallback)
return;
m_proximitySensorCallback = [[ProximitySensorCallback alloc] initWithQIOSProximitySensor:this];
if (++s_startCount == 1)
[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()
{
if (!m_proximitySensorCallback)
return;
[m_proximitySensorCallback release];
m_proximitySensorCallback = 0;
if (--s_startCount == 0)
[UIDevice currentDevice].proximityMonitoringEnabled = NO;
}
QT_END_NAMESPACE
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