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| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
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| ** This file is part of the QtSensors module of the Qt Toolkit. |
| ** |
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| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
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| ****************************************************************************/ |
| |
| #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 |