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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qhoversensorgesturerecognizer.h"
#include <math.h>
#define TIMER2_TIMEOUT 5000
QT_BEGIN_NAMESPACE
QHoverSensorGestureRecognizer::QHoverSensorGestureRecognizer(QObject *parent) :
QSensorGestureRecognizer(parent),
orientationReading(0),reflectance(0),
hoverOk(0), detecting(0), active(0), initialReflectance(0), useHack(0),
lastTimestamp(0), timer2Active(0), lapsedTime2(0)
{
}
QHoverSensorGestureRecognizer::~QHoverSensorGestureRecognizer()
{
}
void QHoverSensorGestureRecognizer::create()
{
}
QString QHoverSensorGestureRecognizer::id() const
{
return QString("QtSensors.hover");
}
bool QHoverSensorGestureRecognizer::start()
{
if (QtSensorGestureSensorHandler::instance()->startSensor(QtSensorGestureSensorHandler::IrProximity)) {
if (QtSensorGestureSensorHandler::instance()->startSensor(QtSensorGestureSensorHandler::Orientation)) {
active = true;
connect(QtSensorGestureSensorHandler::instance(),SIGNAL(irProximityReadingChanged(QIRProximityReading*)),
this,SLOT(irProximityReadingChanged(QIRProximityReading*)));
connect(QtSensorGestureSensorHandler::instance(),SIGNAL(orientationReadingChanged(QOrientationReading*)),
this,SLOT(orientationReadingChanged(QOrientationReading*)));
} else {
QtSensorGestureSensorHandler::instance()->stopSensor(QtSensorGestureSensorHandler::IrProximity);
active = false;
}
} else {
active = false;
}
detecting = false;
detectedHigh = 0;
initialReflectance = 0;
useHack = false;
timer2Active = false;
lapsedTime2 = 0;
return active;
}
bool QHoverSensorGestureRecognizer::stop()
{
QtSensorGestureSensorHandler::instance()->stopSensor(QtSensorGestureSensorHandler::IrProximity);
QtSensorGestureSensorHandler::instance()->stopSensor(QtSensorGestureSensorHandler::Orientation);
disconnect(QtSensorGestureSensorHandler::instance(),SIGNAL(irProximityReadingChanged(QIRProximityReading*)),
this,SLOT(irProximityReadingChanged(QIRProximityReading*)));
disconnect(QtSensorGestureSensorHandler::instance(),SIGNAL(orientationReadingChanged(QOrientationReading*)),
this,SLOT(orientationReadingChanged(QOrientationReading*)));
active = false;
timer2Active = false;
initialReflectance = 0;
return active;
}
bool QHoverSensorGestureRecognizer::isActive()
{
return active;
}
void QHoverSensorGestureRecognizer::orientationReadingChanged(QOrientationReading *reading)
{
orientationReading = reading;
}
void QHoverSensorGestureRecognizer::irProximityReadingChanged(QIRProximityReading *reading)
{
reflectance = reading->reflectance();
if (reflectance == 0)
return;
if (initialReflectance == 0) {
initialReflectance = reflectance;
}
if (initialReflectance > .2) {
useHack = true;
initialReflectance -= .1;
}
if (useHack)
reflectance -= .1;
if (detecting && !hoverOk) {
detectedHigh = qMax(detectedHigh, reflectance);
}
if (reflectance > 0.4) {
// if close stop detecting
hoverOk = false;
detecting = false;
detectedHigh = 0;
}
qreal detectedPercent = 100 - (detectedHigh / reflectance * 100);
qint16 percentCheck;
if (useHack)
percentCheck = -60;
else
percentCheck = -101;
quint64 timestamp = reading->timestamp();
if (!detecting
&& checkForHovering()) {
detecting = true;
detecting = true;
timer2Active = true;
detectedHigh = reflectance;
} else if (detecting
&& detectedPercent < percentCheck
&& !checkForHovering()) {
// went light again after 1 seconds
Q_EMIT hover();
Q_EMIT detected("hover");
hoverOk = false;
detecting = false;
detectedHigh = 0;
timer2Active = false;;
}
if (detecting && reflectance < 0.2) {
timeout();
}
if (timer2Active && lastTimestamp > 0)
lapsedTime2 += (timestamp - lastTimestamp )/1000;
if (timer2Active && lapsedTime2 >= TIMER2_TIMEOUT) {
timeout2();
}
lastTimestamp = reading->timestamp();
}
bool QHoverSensorGestureRecognizer::checkForHovering()
{
if (orientationReading == 0) {
return false;
}
if (orientationReading->orientation() != QOrientationReading::FaceUp)
return false;
if ( (reflectance > 0.2 && reflectance < 0.4)
&& (initialReflectance - reflectance) < -0.1)
return true;
return false;
}
void QHoverSensorGestureRecognizer::timeout()
{
if (checkForHovering()) {
hoverOk = true;
timer2Active = true;
} else {
detecting = false;
detectedHigh = 0;
}
}
void QHoverSensorGestureRecognizer::timeout2()
{
detecting = false;
hoverOk = false;
detectedHigh = 0;
}
QT_END_NAMESPACE
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