Re: [FSO] problem connect Dbus signals with Qt4
On Wednesday 26 November 2008 13:44:01 arne anka wrote:
please post your .h and .cpp -- that might help, to get a clue, where to
look.
Hi,
here they are..
I've implemented all Gypsy get-methods and signals except the
SatelliteChanged-singal so far..
is there a Wiki to put this functions as an example? is OM-Wiki the right
place?
#include MokoGPS.h
#include QtDBus
#include QDebug
#include QDBusReply
#include QDateTime
#include QtTest
#include math.h
/
* and Operators declaration for DBus metatypes
*/
// Marshall the GPSSatellite data into a D-BUS argument
QDBusArgument operator(QDBusArgument argument, const GPSSatellite sat)
{
argument.beginStructure();
argument sat.ID sat.InUse sat.Elevation sat.Azimuth sat.SNR;
argument.endStructure();
return argument;
}
// Retrieve the GPSSatellite data from the D-BUS argument
const QDBusArgument operator(const QDBusArgument argument, GPSSatellite sat)
{
argument.beginStructure();
argument sat.ID sat.InUse sat.Elevation sat.Azimuth sat.SNR;
argument.endStructure();
return argument;
}
const QDebug operator(QDebug debug, const GPSSatellite sat) {
debug sat.ID sat.InUse sat.Elevation sat.Azimuth sat.SNR;
return debug;
}
const QDebug operator(QDebug debug, const QListGPSSatellite lsat) {
foreach(GPSSatellite sat, lsat) debug sat;
return debug;
}
/*
* MokoGPS class
*/
MokoGPS::MokoGPS(){
///***
///* Connection to system bus
///***
//register GPSSatellite metatype
qDBusRegisterMetaTypeGPSSatellite();
qDBusRegisterMetaTypeQListGPSSatellite ();
QDBusConnection GPSConnection = QDBusConnection::systemBus();
/// check connection
if (GPSConnection.isConnected())
qDebug() successfully connected to system bus \n;
else
qFatal(Failed to connect to session bus);
/// create a proxy object for method calls
QString ServiceBusName = org.freedesktop.Gypsy;
QString ObjectPath = /org/freedesktop/Gypsy ;
GPSInterface = new QDBusInterface( ServiceBusName,
ObjectPath,
///method path = search recursive in
///all subfolders for the called method
,
QDBusConnection::systemBus() );
connect(GPSInterface, SIGNAL( FixStatusChanged(int) ),this, SLOT( handleFixStatusChanged(int) ) );
//next line is to try types to connect to Signal
connect(GPSInterface, SIGNAL( SatellitesChanged(QDBusMessage) ) ,this, SLOT( handleSatellitesChanged(QDBusMessage) ) );
}
///* destructor
MokoGPS::~MokoGPS(){
///close on prog.exit
logPosition.close();
logAccuracy.close();
logCourse.close();
//logSatellites.close();
}
/*
* Slots to interact with GUI
*/
/// enable GPS
void MokoGPS::StartDevice()
{
GPSInterface-call(Enable);
qDebug()device started \n;
emit sendOutput(device started , 1);
}
/// disable GPS
void MokoGPS::StopDevice()
{
GPSInterface-call(Disable);
qDebug()device stopped \n;
emit sendOutput(device stopped , 1);
}
void MokoGPS::StartLog() {
qDebug()start logging;
emit sendOutput(start logging, 1);
/// timestamp to prepend to Logfile name
QDateTime *thisDay = new QDateTime();
QString thisDate = thisDay-currentDateTime().toString(-MM-dd_hh.mm.ss);
///open logfiles
QString positionlog = GPSPosition.log;
QString accuracylog = GPSAccuracy.log;
QString courselog = GPSCourse.log;
QString satelliteslog = GPSSatellites.log;
positionlog.prepend(thisDate);
accuracylog.prepend(thisDate);
courselog.prepend(thisDate);
satelliteslog.prepend(thisDate);
logPosition.open(positionlog.toLatin1() );
logAccuracy.open(accuracylog.toLatin1() );
logCourse.open(courselog.toLatin1() );
//logSatellites.open(satelliteslog.toLatin1() );
/// connect dbus signals
connect(GPSInterface, SIGNAL( PositionChanged(int,int,double,double,double) ),this, SLOT( handlePositionChanged(int,int,double,double,double) ) );
connect(GPSInterface, SIGNAL( TimeChanged(int) ),this, SLOT( handleTimeChanged(int) ) );
connect(GPSInterface, SIGNAL( ConnectionStatusChanged(bool) ),this, SLOT( handleConnectionStatusChanged(bool) ) );
/// due to display this without logging in Gui it is connected in the constructor
//connect(GPSInterface, SIGNAL( FixStatusChanged(int) ),this, SLOT( handleFixStatusChanged(int) ) );
connect(GPSInterface, SIGNAL( CourseChanged(int,int,double,double,double) ),this, SLOT( handleCourseChanged(int,int,double,double,double) ) );
connect(GPSInterface, SIGNAL( AccuracyChanged(int,double,double,double) ),this, SLOT( handleAccuracyChanged(int,double,double,double) ) );
/// not jet possible to set the right parameter
//connect(GPSInterface, SIGNAL( SatellitesChanged(QDBusArgument) ),this, SLOT( handleSatellitesChanged(QDBusArgument) ) );
}
void
Re: [FSO] problem connect Dbus signals with Qt4
I've implemented all Gypsy get-methods and signals except the SatelliteChanged-singal so far.. did you ever try QDBusArgument, as mickey lauer suggested? is there a Wiki to put this functions as an example? is OM-Wiki the right place? i'd think fso is the better place for this kind of information. ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: [FSO] problem connect Dbus signals with Qt4
please, always answer to the list. On Wednesday 26 November 2008 11:35:26 you wrote: FR# mdbus -s org.freedesktop.Gypsy /org/freedesktop/Gypsy says: [SIGNAL]org.freedesktop.Gypsy.Satellite.SatellitesChanged( a(ubuuu):satellites ) that's no, what i meant. the signal has to be declared in some .h file you are using -- what does it look like? yes, if i made this signal. but its a Gypsy-signal which is part of FSOframework and comes over the dbus. so it isn't declared in my files... anyway, you need to include some headers where the signal is declared I don't know where it is declared, maybe it is declared in the Gypsy source files but it is written in gtk so it wouldn't help me much, i think, or does it? that's deep water, my Qt is a bit rusty. but i think, somewhere there should be the declaration you are trying to use. I tried to find out which signal is sends via QSignalSpy, but even this class needs to know the exact parameters of SatellitesChanged signal.. is there a way to accept/connect the Signal without knowing the exact parameter? none, that i know of. please post your .h and .cpp -- that might help, to get a clue, where to look. ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: [FSO] problem connect Dbus signals with Qt4
On Wednesday 26 November 2008 15:00:08 arne anka wrote: did you ever try QDBusArgument, as mickey lauer suggested? yes, tried quite many Types, thats why I'm asking here.. ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: [FSO] problem connect Dbus signals with Qt4
Hi,
On Tue, Nov 25, 2008 at 06:33:49PM +0100, macebre wrote:
i declared a new Metatype GPSSatellite with and operators.
struct GPSSatellite
{
int ID;
bool InUse;
unsigned int Elevation;
unsigned int Azimuth;
unsigned int SNR;
};
ID needs to be of type unsigned int (never trust the gypsy online
docs ;))
Greetings,
Sascha
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Re: [FSO] problem connect Dbus signals with Qt4
thanks,
i declared a new Metatype GPSSatellite with and operators.
struct GPSSatellite
{
int ID;
bool InUse;
unsigned int Elevation;
unsigned int Azimuth;
unsigned int SNR;
};
Q_DECLARE_METATYPE(GPSSatellite);
Q_DECLARE_METATYPE(QListGPSSatellite);
They work fine with the dBus method GetSatellites().
QDBusMessage SatelliteReply;
SatelliteReply = GPSInterface-call(GetSatellites);
QListGPSSatellite satList = qdbus_castQListGPSSatellite
(SatelliteReply.arguments()[0]);
my problem is that i can not connect to the SatellitesChanged signal like:
connect(GPSInterface, SIGNAL( SatellitesChanged(QDBusMessage) ) ,this, SLOT(
handleSatellitesChanged(QDBusMessage) ) );
I have tried many Types and every time there's the error like:
Object::connect: No such signal local::Merged::SatellitesChanged(QDBusMessage)
which Type / Metatype shoud i use here??
(
On Sunday 23 November 2008 22:41:39 Michael 'Mickey' Lauer wrote:
Am Sunday 23 November 2008 22:24:18 schrieb macebre:
Does somebody know which type I have to use there or where I could find
more information about this?
Is there a command to find out which Qt type is send by a signal?
Please consult the Qt DBus documentation, e.g.
http://doc.trolltech.com/4.2/qdbusargument.html
IIRC it says there that you have to use the operator to extract
arguments out of arrays and structs.
***
for Interested the my GPSSatellite operators:
QDBusArgument operator(QDBusArgument argument, const GPSSatellite sat)
{
argument.beginStructure();
argument sat.ID sat.InUse sat.Elevation sat.Azimuth
sat.SNR;
argument.endStructure();
return argument;
}
const QDBusArgument operator(const QDBusArgument argument, GPSSatellite
sat)
{
argument.beginStructure();
argument sat.ID sat.InUse sat.Elevation sat.Azimuth
sat.SNR;
argument.endStructure();
return argument;
}
and somewhere in code:
qDBusRegisterMetaTypeGPSSatellite();
qDBusRegisterMetaTypeQListGPSSatellite ();
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Re: [FSO] problem connect Dbus signals with Qt4
Object::connect: No such signal local::Merged::SatellitesChanged(QDBusMessage) where is SatellitesChanged declared and how? ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: [FSO] problem connect Dbus signals with Qt4
On Tuesday 25 November 2008 18:48:21 arne anka wrote: Object::connect: No such signal local::Merged::SatellitesChanged(QDBusMessage) where is SatellitesChanged declared and how? its a signal from Gypsy (Dbus) org.freedesktop.Gypsy /org/freedesktop/Gypsy FR# mdbus -s org.freedesktop.Gypsy /org/freedesktop/Gypsy says: [SIGNAL]org.freedesktop.Gypsy.Satellite.SatellitesChanged( a(ubuuu):satellites ) an array of structs like my GPSSatellite. Whats the Type wich Qt s connect is waiting for? ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: [FSO] problem connect Dbus signals with Qt4
Am Sunday 23 November 2008 22:24:18 schrieb macebre: Does somebody know which type I have to use there or where I could find more information about this? Is there a command to find out which Qt type is send by a signal? Please consult the Qt DBus documentation, e.g. http://doc.trolltech.com/4.2/qdbusargument.html IIRC it says there that you have to use the operator to extract arguments out of arrays and structs. -- :M: ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
