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|
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtLocation module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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, Nokia gives you certain additional
** rights. These rights are described in the Nokia 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QObject>
#include <QDateTime>
#include <QDebug>
#include <limits.h>
#include "qgeopositioninfosource_s60_p.h"
#include "qgeopositioninfosource.h"
#include "qmlbackendao_s60_p.h"
QT_BEGIN_NAMESPACE
// constructor
CQGeoPositionInfoSourceS60::CQGeoPositionInfoSourceS60(QObject* aParent) : QGeoPositionInfoSource(aParent),
mCurrentModuleId(TUid::Null()),
mReqModuleId(TUid::Null()),
mDevStatusUpdateAO(NULL),
mReqUpdateAO(NULL),
mRegUpdateAO(NULL),
mSupportedMethods(PositioningMethod(0)),
mCurrentMethod(PositioningMethod(0)),
mListSize(0),
mMinUpdateInterval(100),
mStartUpdates(FALSE),
mRegularUpdateTimedOut(FALSE),
mUpdateIntervalSet(FALSE),
mModuleFlags(0)
{
memset(mList, 0 , MAX_SIZE * sizeof(CPosMethodInfo));
}
// destructor
CQGeoPositionInfoSourceS60::~CQGeoPositionInfoSourceS60()
{
if (mReqUpdateAO)
delete mReqUpdateAO;
if (mRegUpdateAO)
delete mRegUpdateAO;
if (mDevStatusUpdateAO)
delete mDevStatusUpdateAO;
}
// static function NewLC
CQGeoPositionInfoSourceS60* CQGeoPositionInfoSourceS60::NewLC(QObject* aParent)
{
CQGeoPositionInfoSourceS60* self =
new(ELeave) CQGeoPositionInfoSourceS60(aParent);
CleanupStack::PushL(self);
self->ConstructL();
return self;
}
// static function NewL
CQGeoPositionInfoSourceS60* CQGeoPositionInfoSourceS60::NewL(QObject * aParent)
{
RProcess thisProcess;
if (!thisProcess.HasCapability(ECapabilityLocation)) {
qWarning() << "QGeoPositionInfoSource::createDefaultSource() requires the Symbian Location capability to succeed on the Symbian platform.";
return 0;
}
CQGeoPositionInfoSourceS60* self = CQGeoPositionInfoSourceS60::NewLC(aParent);
CleanupStack::Pop();
//check if the second phase construction is successful
// commented to return the pointer and the application can check if it
//is valid or not
/* if (!self->isValid()) {
delete self;
self = NULL;
}*/
return self;
}
// 2nd phase constructor
void CQGeoPositionInfoSourceS60::ConstructL()
{
TInt error = mPositionServer.Connect();
if (error == KErrNone) {
CleanupClosePushL(mPositionServer);
mDevStatusUpdateAO = CQMLBackendAO::NewL(this, DeviceStatus);
if (mDevStatusUpdateAO == NULL) {
CleanupStack::Pop(1);
return;
}
//update the list array with the available method initially
updateDeviceStatus();
// Set the PreferredPositioningMethods based on Supported methods
QGeoPositionInfoSource::setPreferredPositioningMethods(mSupportedMethods);
//devStatusUpdateAO->NotifyDeviceStatus(mStatusEvent);
CleanupStack::PushL(mDevStatusUpdateAO);
if (mCurrentModuleId != TUid::Null()) {
mRegUpdateAO = CQMLBackendAO::NewL(this, RegularUpdate, mCurrentModuleId);
mRegUpdateAO->setUpdateInterval(updateInterval());
}
CleanupStack::Pop(2);
}
}
QGeoPositionInfo CQGeoPositionInfoSourceS60::lastKnownPosition(bool aFromSatellitePositioningMethodsOnly) const
{
QGeoPositionInfo posUpdate;
TPosition pos;
TInt error = KErrNone;
RPositioner iLastKnownpositioner;
TRequestStatus status;
error = iLastKnownpositioner.Open(*const_cast<RPositionServer*>(&mPositionServer));
//request for lastknown position update and wait for the request to complete
if (error == KErrNone) {
TPositionInfo posInfo;
iLastKnownpositioner.SetRequestor(CRequestor::ERequestorService ,
CRequestor::EFormatApplication, _L("QTmobility_Location"));
iLastKnownpositioner.GetLastKnownPosition(posInfo, status);
User::WaitForRequest(status);
error = status.Int();
iLastKnownpositioner.Close();
if ((error == KErrNone) || (error == KPositionPartialUpdate)) {
TPositionModuleInfo modInfo;
mPositionServer.GetModuleInfoById(posInfo.ModuleId(), modInfo);
if (!aFromSatellitePositioningMethodsOnly || (aFromSatellitePositioningMethodsOnly && (modInfo.Capabilities() & TPositionModuleInfo::ECapabilitySatellite))) {
QGeoCoordinate coord;
posInfo.GetPosition(pos);
coord.setLatitude(pos.Latitude());
coord.setLongitude(pos.Longitude());
coord.setAltitude(pos.Altitude());
//store the QGeoCoordinate values
posUpdate.setCoordinate(coord);
TDateTime datetime = pos.Time().DateTime();
QDateTime dt(QDate(datetime.Year(), datetime.Month() + 1, datetime.Day() + 1),
QTime(datetime.Hour(), datetime.Minute(), datetime.Second(),
datetime.MicroSecond() / 1000),
Qt::UTC);
//store the time stamp
posUpdate.setTimestamp(dt);
//store the horizontal accuracy
posUpdate.setAttribute(QGeoPositionInfo::HorizontalAccuracy, pos.HorizontalAccuracy());
//store the vertical accuracy
posUpdate.setAttribute(QGeoPositionInfo::VerticalAccuracy, pos.VerticalAccuracy());
}
}
}
return posUpdate;
}
//
int CQGeoPositionInfoSourceS60::minimumUpdateInterval() const
{
if (mCurrentModuleId == TUid::Null())
return 0;
return mMinUpdateInterval;
}
//private function : to derive the supported positioning methods
void CQGeoPositionInfoSourceS60::updateAvailableTypes()
{
PositioningMethods types;
for (TInt i = 0; i < mListSize ; i++) {
//check only for the available module without any device errors
if (mList[i].mIsAvailable &&
(mList[i].mStatus != TPositionModuleStatus::EDeviceUnknown) &&
(mList[i].mStatus != TPositionModuleStatus::EDeviceError)) {
types |= mList[i].mPosMethod;
}
//if both SatellitePositioningMethods and NonSatellitePositioningMethods return
if (types.testFlag(AllPositioningMethods))
break;
}
//update the supported methods based on types value, derived from the above steps
mSupportedMethods = types;
}
//private function : to retrieve the index of the supplied module id from the mList array
TInt CQGeoPositionInfoSourceS60::checkModule(TPositionModuleId aId)//const
{
TInt i;
for (i = 0; i < mListSize; i++)
if (mList[i].mUid == aId) {
return i;
}
return -1;
}
//private function : get the index of the mList that supports the preferred method if
//available,else returns the index of the default module
TInt CQGeoPositionInfoSourceS60::getIndexPositionModule(TUint8 aBits, PositioningMethods aPosMethods) const
{
TInt index, error;
TPositionModuleId modID;
//get the default module Id, whose index is returned if the preferred methods are not
//available
error = mPositionServer.GetDefaultModuleId(modID);
if (error != KErrNone)
modID = TUid::Null();
//index = -1 : no methods available in the mList that supports preferred methods
index = -1;
for (TInt i = 0; i < mListSize ; i++) {
//check the module properties to select the preferred method,search should not
//not select an unavailable method,error device or index matching aLastIndex
if (mList[i].mIsAvailable && aPosMethods.testFlag(mList[i].mPosMethod)
&& (mList[i].mStatus != TPositionModuleStatus::EDeviceUnknown)
&& (mList[i].mStatus != TPositionModuleStatus::EDeviceError)
&& (((aBits >> i) & 1))) {
return i;
}
//store the index of the default module
if ((modID == mList[i].mUid) && ((aBits >> i) & 1))
index = i;
}
return index;
}
//private function : to get the index of the positioning method with time to first fix
//lesser than timeout
TInt CQGeoPositionInfoSourceS60::getMoreAccurateMethod(TInt aTimeout, TUint8 aBits)
{
TInt index = -1;
double temp = -1.0;
PositioningMethods posMethods;
TTimeIntervalMicroSeconds microSeconds;
posMethods = preferredPositioningMethods();
//convert the timeout --> micro seconds
microSeconds = aTimeout * 1000;
for (TInt i = 0 ; i < mListSize; i++) {
if (mList[i].mIsAvailable
&& posMethods.testFlag(mList[i].mPosMethod)
&& (mList[i].mStatus != TPositionModuleStatus::EDeviceUnknown)
&& (mList[i].mStatus != TPositionModuleStatus::EDeviceError)
&& (((aBits >> i) & 1))
&& (mList[i].mTimeToFirstFix < microSeconds)) {
if ((temp == -1.0) || (mList[i].mHorizontalAccuracy < temp)) {
index = i;
temp = mList[i].mHorizontalAccuracy;
}
}
}
if (index != -1) {
return index;
}
bool minSet = false;
microSeconds = 0;
for (TInt i = 0 ; i < mListSize; i++) {
if (mList[i].mIsAvailable
&& posMethods.testFlag(mList[i].mPosMethod)
&& (mList[i].mStatus != TPositionModuleStatus::EDeviceUnknown)
&& (mList[i].mStatus != TPositionModuleStatus::EDeviceError)
&& (((aBits >> i) & 1))) {
if (!minSet || (mList[i].mTimeToFirstFix < microSeconds)) {
index = i;
minSet = true;
microSeconds = mList[i].mTimeToFirstFix;
}
}
}
return index;
}
//private function : to update the mList array
void CQGeoPositionInfoSourceS60::updateStatus(TPositionModuleInfo &aModInfo, TInt aStatus)
{
TInt i, index;
TPositionModuleId id;
PositioningMethod method;
TBool available;
TReal32 accuracy;
TTimeIntervalMicroSeconds time_to_first_fix, time_to_next_fix;
TPositionQuality quality;
CQMLBackendAO *temp = NULL;
//query for the following parameters
id = aModInfo.ModuleId();
//module with a satellite capability is assumed to be provided satellite based positioning
//method
method = (aModInfo.Capabilities() & TPositionModuleInfo::ECapabilitySatellite) ?
SatellitePositioningMethods : NonSatellitePositioningMethods;
//gets the device availability based on the user settings
available = aModInfo.IsAvailable();
//quality : holds the required metrics
aModInfo.GetPositionQuality(quality);
//Accuracy
accuracy = quality.HorizontalAccuracy();
//time taken for the first fix
time_to_first_fix = quality.TimeToFirstFix();
//time taken for the subsequent fix
time_to_next_fix = quality.TimeToNextFix();
if ((i = checkModule(id)) == -1) {
//update the properties of the module
QMutexLocker lLocker(&m_mutex);
//TPositionModuleId of the module
mList[mListSize].mUid = id;
//positioning method method type
mList[mListSize].mPosMethod = method;
//status of the device
mList[mListSize].mStatus = aStatus;
//availablility of the module
mList[mListSize].mIsAvailable = available;
//horizontal accuracy of the module
mList[mListSize].mHorizontalAccuracy = accuracy;
//time required to get the first fix
mList[mListSize].mTimeToFirstFix = time_to_first_fix;
//time required for subsequent fix
mList[mListSize].mTimeToNextFix = time_to_next_fix;
//count on the mList array size
mListSize++;
//update the supported source types based on the device status
updateAvailableTypes();
//store the correct method in use from the mCurrentModuleId retireved earlier
if (id == mCurrentModuleId) {
mCurrentMethod = method;
mMinUpdateInterval = mList[mListSize-1].mTimeToNextFix.Int64() / 1000;
}
lLocker.unlock();
} else {
QMutexLocker lLocker(&m_mutex);
//module's status has changed
if (mList[i].mStatus != aStatus)
mList[i].mStatus = aStatus;
//module's availability has changed
if (mList[i].mIsAvailable != available)
mList[i].mIsAvailable = available;
//module's horizontal accuracy has changed
if (mList[i].mHorizontalAccuracy != accuracy)
mList[i].mHorizontalAccuracy = accuracy;
//module's time to first fix has changed
if (mList[i].mTimeToFirstFix != time_to_first_fix)
mList[i].mTimeToFirstFix = time_to_first_fix;
//module's time to subsequent fix has changed
if (mList[i].mTimeToNextFix != time_to_next_fix)
mList[i].mTimeToFirstFix = time_to_next_fix;
//update the supported source types based on the device status
updateAvailableTypes();
lLocker.unlock();
//if the mCurrentModuleId is NULL, try updating the reg update with the available
//positioning method
if (mCurrentModuleId == TUid::Null() && (available == TRUE) &&
(aStatus != TPositionModuleStatus::EDeviceUnknown) &&
(aStatus != TPositionModuleStatus::EDeviceError)) {
TInt interval;
interval = QGeoPositionInfoSource::updateInterval();
TRAPD(ret, QT_TRYCATCH_LEAVING(temp = CQMLBackendAO::NewL(this, RegularUpdate,
mList[i].mUid)));
QMutexLocker lRegLocker_interval(&m_mutex_interval);
mMinUpdateInterval = interval;
lRegLocker_interval.unlock();
if ((ret == KErrNone) && (temp != NULL)) {
temp->setUpdateInterval(interval);
QMutexLocker lRegLocker(&m_mutex_RegUpAO);
if (mRegUpdateAO)
delete mRegUpdateAO;
mRegUpdateAO = temp;
lRegLocker.unlock();
//to be uncommented when startUpdates are done
if (mStartUpdates)
mRegUpdateAO->startUpdates();
QMutexLocker lRegLocker_interval1(&m_mutex_interval);
mCurrentModuleId = mList[i].mUid;
mMinUpdateInterval = mList[i].mTimeToNextFix.Int64() / 1000;
mCurrentMethod = mList[i].mPosMethod;
lRegLocker_interval1.unlock();
}
}
//check if the status of the currently used modules for regular update or
//request update has changed
if (((id == mCurrentModuleId) || (id == mReqModuleId)) &&
((aStatus == TPositionModuleStatus::EDeviceUnknown) ||
(aStatus == TPositionModuleStatus::EDeviceError) ||
(available == FALSE))) {
//if the change happened for regular update
if (id == mCurrentModuleId) {
TInt interval;
TUint8 bits;
interval = QGeoPositionInfoSource::updateInterval();
QMutexLocker lRegLocker1(&m_mutex_RegUpAO);
if (mRegUpdateAO)
delete mRegUpdateAO;
lRegLocker1.unlock();
bits = mModuleFlags;
do {
//error = Get the index of the positioning module based on
//the preferred method if available , else get the default
//position module
index = getIndexPositionModule(bits);
if (index >= 0) {
TRAPD(ret, QT_TRYCATCH_LEAVING(temp = CQMLBackendAO::NewL(this, RegularUpdate,
mList[index].mUid)));
if ((ret == KErrNone) && (temp != NULL))
break;
bits = bits & (0XFF ^(1 << index));
}
} while (index >= 0);
if (temp != NULL) {
//successful in creating the subsession for the required
//method
QMutexLocker lRegLocker2(&m_mutex_RegUpAO);
mRegUpdateAO = temp;
lRegLocker2.unlock();
QMutexLocker lRegLocker_interval2(&m_mutex_interval);
mCurrentModuleId = mList[index].mUid;
mCurrentMethod = mList[index].mPosMethod;
mMinUpdateInterval = mList[index].mTimeToNextFix.Int64() / 1000;
lRegLocker_interval2.unlock();
mRegUpdateAO->setUpdateInterval(interval);
//to be uncommented when startUpdates are done
if (mStartUpdates)
mRegUpdateAO->startUpdates();
} else {
//no methods available,clean up the resources
QMutexLocker lRegLocker3(&m_mutex_RegUpAO);
mRegUpdateAO = NULL;
lRegLocker3.unlock();
QMutexLocker lRegLocker_interval3(&m_mutex_interval);
mCurrentModuleId = TUid::Null();
mMinUpdateInterval = interval;
mCurrentMethod = PositioningMethod(0);
lRegLocker_interval3.unlock();
emit updateTimeout();
}
}
//check if device status of the request update module changed
if (id == mReqModuleId) {
QMutexLocker lReqLocker(&m_mutex_ReqUpAO);
if (mRegUpdateAO)
delete mReqUpdateAO;
mReqUpdateAO = NULL;
mReqModuleId = TUid::Null();
lReqLocker.unlock();
emit updateTimeout();
}
}
} //end else
}
// Notification methods from active object. Notifies device status changes
void CQGeoPositionInfoSourceS60::updateDeviceStatus(void)
{
TPositionModuleStatus moduleStatus;
TPositionModuleInfo moduleInfo;
TInt error;
//mListSize = 0 : called updateDeviceStatus() first time to initialise the array
if (mListSize == 0) {
TUint modCount;
//count on the modules currently supported by the device
mPositionServer.GetNumModules(modCount);
//module ID of the default module
error = mPositionServer.GetDefaultModuleId(mCurrentModuleId);
if (error != KErrNone)
mCurrentModuleId = TUid::Null();
for (TUint i = 0; i < modCount; i++) {
//get module information
mPositionServer.GetModuleInfoByIndex(i, moduleInfo);
//get module status
mPositionServer.GetModuleStatus(moduleStatus, moduleInfo.ModuleId());
//update the properties of the module in the mList array
updateStatus(moduleInfo, moduleStatus.DeviceStatus());
mModuleFlags |= (1 << i);
}
} else {
//UpdateDeviceStatus() called after registering for NotifyModuleStatusEvent
//get the module id from the status event
TPositionModuleId id = mStatusEvent.ModuleId();
//get module information
mPositionServer.GetModuleInfoById(id, moduleInfo);
//get current status of the module
mStatusEvent.GetModuleStatus(moduleStatus);
//update the properties of the module in the mList array
updateStatus(moduleInfo, moduleStatus.DeviceStatus());
}
//register for next NotifyModuleStatusEvent
mDevStatusUpdateAO->notifyDeviceStatus(mStatusEvent);
}
//
void CQGeoPositionInfoSourceS60::TPositionInfo2QGeoPositionInfo(
HPositionGenericInfo *aPosInfo1, QGeoPositionInfo& aPosInfo2)
{
TPosition pos;
QGeoCoordinate coord;
float val;
aPosInfo1->GetPosition(pos);
coord.setLatitude(pos.Latitude());
coord.setLongitude(pos.Longitude());
coord.setAltitude(pos.Altitude());
//store the QGeoCoordinate values
aPosInfo2.setCoordinate(coord);
TDateTime datetime = pos.Time().DateTime();
QDateTime dt(QDate(datetime.Year() , datetime.Month() + 1, datetime.Day() + 1),
QTime(datetime.Hour() , datetime.Minute(), datetime.Second(),
datetime.MicroSecond() / 1000),
Qt::UTC);
//store the time stamp
aPosInfo2.setTimestamp(dt);
//store the horizontal accuracy
aPosInfo2.setAttribute(QGeoPositionInfo::HorizontalAccuracy, pos.HorizontalAccuracy());
//store the vertical accuracy
aPosInfo2.setAttribute(QGeoPositionInfo::VerticalAccuracy, pos.VerticalAccuracy());
//check for the horizontal speed
if (aPosInfo1->IsFieldAvailable(EPositionFieldHorizontalSpeed)) {
aPosInfo1->GetValue(EPositionFieldHorizontalSpeed, val);
aPosInfo2.setAttribute(QGeoPositionInfo::GroundSpeed, val);
}
//check for the vertcal speed
if (aPosInfo1->IsFieldAvailable(EPositionFieldVerticalSpeed)) {
aPosInfo1->GetValue(EPositionFieldVerticalSpeed, val);
aPosInfo2.setAttribute(QGeoPositionInfo::VerticalSpeed, val);
}
//check for the magnetic variation
if (aPosInfo1->IsFieldAvailable(EPositionFieldMagneticCourseError)) {
aPosInfo1->GetValue(EPositionFieldMagneticCourseError, val);
aPosInfo2.setAttribute(QGeoPositionInfo::MagneticVariation, val);
}
//check for the heading
if (aPosInfo1->IsFieldAvailable(EPositionFieldHeading)) {
aPosInfo1->GetValue(EPositionFieldHeading, val);
aPosInfo2.setAttribute(QGeoPositionInfo::Direction, val);
}
}
//
void CQGeoPositionInfoSourceS60::updatePosition(HPositionGenericInfo *aPosInfo, int aError)
{
QGeoPositionInfo posInfo;
if (aError == KErrNone && aPosInfo) {
//fill posUpdate
TPositionInfo2QGeoPositionInfo(aPosInfo, posInfo);
mRegularUpdateTimedOut = false;
//emit posUpdate
emit positionUpdated(posInfo);
} else if (aError == KErrTimedOut) {
//request has timed out
if (mStartUpdates) {
if (!mRegularUpdateTimedOut) {
mRegularUpdateTimedOut = true;
emit updateTimeout();
}
} else {
emit updateTimeout();
}
} else {
//posiitoning module is unable to return any position information
emit updateTimeout();
}
}
// Returns the PositionServer handle
RPositionServer& CQGeoPositionInfoSourceS60:: getPositionServer()
{
return mPositionServer;
}
// for request update
void CQGeoPositionInfoSourceS60::requestUpdate(int aTimeout)
{
TInt index = -1;
TUint8 bits;
CQMLBackendAO *temp = NULL;
if (mRegUpdateAO == NULL || mCurrentModuleId == TUid::Null()) {
emit updateTimeout();
return;
}
//return if already a request update is pending
if (mReqUpdateAO && mReqUpdateAO->isRequestPending())
return;
if (aTimeout < 0 || (aTimeout != 0 && aTimeout < minimumUpdateInterval())) {
emit updateTimeout();
return;
}
if (aTimeout == 0)
aTimeout = 20000;
bits = mModuleFlags;
do {
//index of the more accurate method in the array
index = getMoreAccurateMethod(aTimeout, bits);
//no positioning method method available : emit updateTimeout
if (index < 0) {
emit updateTimeout();
break;
}
//if the selected module for request update is same as the previous one reuse the request
if (mList[index].mUid == mReqModuleId) {
if (mReqUpdateAO) {
mReqUpdateAO->requestUpdate(aTimeout);
return;
}
}
TRAPD(ret, QT_TRYCATCH_LEAVING(temp = CQMLBackendAO::NewL(this, OnceUpdate, mList[index].mUid)));
if ((ret == KErrNone) && (temp != NULL)) {
QMutexLocker lReqLocker(&m_mutex_ReqUpAO);
//delete the old reqest update
if (mReqUpdateAO)
delete mReqUpdateAO;
//set the requestAO to the newly created AO
mReqUpdateAO = temp;
//set the request module ID
mReqModuleId = mList[index].mUid;
lReqLocker.unlock();
//start the update
mReqUpdateAO->requestUpdate(aTimeout);
return;
}
bits = bits & (0XFF ^(1 << index));
} while (index >= 0);
//cleanup resources if the invalid requpdate is still stored
if (mReqUpdateAO) {
QMutexLocker lReqLocker(&m_mutex_ReqUpAO);
delete mReqUpdateAO;
mReqUpdateAO = NULL;
mReqModuleId = TUid::Null();
lReqLocker.unlock();
}
}
// starts the regular updates
void CQGeoPositionInfoSourceS60::startUpdates()
{
//SetUpdateInterval if it is not already set from application
if (!mUpdateIntervalSet)
setUpdateInterval(1000);
if (mRegUpdateAO == NULL || mCurrentModuleId == TUid::Null()) {
emit updateTimeout();
return;
}
if (receivers(SIGNAL(positionUpdated(QGeoPositionInfo))) > 0 && !mStartUpdates)
mRegUpdateAO->startUpdates();
mRegularUpdateTimedOut = false;
mStartUpdates = true;
}
// stops the regular updates
void CQGeoPositionInfoSourceS60::stopUpdates()
{
mStartUpdates = false;
if (mRegUpdateAO == NULL || mCurrentModuleId == TUid::Null()) {
emit updateTimeout();
return;
}
mRegUpdateAO->cancelUpdate();
}
void CQGeoPositionInfoSourceS60::setPreferredPositioningMethods(PositioningMethods aMethods)
{
QGeoPositionInfoSource::setPreferredPositioningMethods(aMethods);
PositioningMethods preferredMethod(PositioningMethods(0));
TInt index = -1;
// the poistioning methods are not supported
// if the preferred positioning method is the current poistioning
if (!(mSupportedMethods & aMethods) || (aMethods == PositioningMethods(AllPositioningMethods)) ||
(aMethods == PositioningMethods(mCurrentMethod)))
return;
//TPositionModuleId moduleId = getPreferredPoistionModuleId(methods);
//if(moduleId == TUid::Null())
//return;
CQMLBackendAO *temp = NULL;
TUint8 bits;
bits = mModuleFlags;
do {
//index = Get the index of the positioning module based on
//the preferred method if available , else get the default
//position module
index = getIndexPositionModule(bits, aMethods);
if (index == -1)
return;
if (index >= 0) {
TRAPD(error, QT_TRYCATCH_LEAVING(temp = CQMLBackendAO::NewL(this, RegularUpdate,
mList[index].mUid)));
if ((temp != NULL) && (error == KErrNone))
break;
bits = bits & (0XFF ^(1 << index));
}
} while (index >= 0);
if (temp != NULL) {
// this is needed as the previous setupdateinterval value should not be lost
int updateInterval = QGeoPositionInfoSource::updateInterval();
QMutexLocker lRegLocker(&m_mutex_RegUpAO);
if (mRegUpdateAO)
delete mRegUpdateAO;
mRegUpdateAO = temp;
mCurrentModuleId = mList[index].mUid ;
lRegLocker.unlock();
index = checkModule(mCurrentModuleId);
if (index >= 0 && index < mListSize) {
QMutexLocker lRegLocker_interval(&m_mutex_interval);
mCurrentMethod = mList[index].mPosMethod ;
mMinUpdateInterval = mList[index].mTimeToNextFix.Int64() / 1000;
lRegLocker_interval.unlock();
}
int value = mRegUpdateAO->setUpdateInterval(updateInterval);
//as the positioning module has changed,
//possibility of the minimumupdateinterval being changed
if (value != updateInterval)
QGeoPositionInfoSource::setUpdateInterval(value);
}
}
void CQGeoPositionInfoSourceS60::setUpdateInterval(int aMilliSec)
{
if (mRegUpdateAO) {
int interval = mRegUpdateAO->setUpdateInterval(aMilliSec);
// as the above set value can be minimum value so
// assigning to the base class data member
QGeoPositionInfoSource::setUpdateInterval(interval);
mUpdateIntervalSet = true;
}
}
void CQGeoPositionInfoSourceS60::connectNotify(const char *aSignal)
{
// start update if it already connected
if (mStartUpdates && mRegUpdateAO && QLatin1String(aSignal) == SIGNAL(positionUpdated(QGeoPositionInfo)))
mRegUpdateAO->startUpdates();
}
void CQGeoPositionInfoSourceS60::disconnectNotify(const char *aSignal)
{
// Cancel updates if slot is disconnected for the positionUpdate() signal.
if ((mRegUpdateAO) && (QLatin1String(aSignal) == SIGNAL(positionUpdated(QGeoPositionInfo))) && receivers(SIGNAL(positionUpdated(QGeoPositionInfo))) == 0)
mRegUpdateAO->cancelUpdate();
}
QT_END_NAMESPACE
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