Re: [Development] Qt5.3 / Location Maps
I have done more work towards our app QtQuick2 transition. Several things I
found out
- Qt3d and location with geoservices compiles nicely for Android and iOS
- For iOS by default they still create dynamic libs and needs to be patched
to make static version
- After iOS make is made, make clean distclean does not clean all but if I
would like to compile
an other platform, I need to take clean snapshot
- For Android, getting geoservices map plugin found during runtime requires
a lot of tweaking, it does not work out of the box even it builds without
problems
- For Ubuntu and OSX all works out of the box
Then back to the previous question, how input data from C++ app to Map.
On Thu, May 8, 2014 at 1:40 PM, Kate Alhola wrote:
> On Wed, May 7, 2014 at 3:41 AM, Aaron McCarthy
> wrote:
>
>> Hi,
>>
>> On Tue, 6 May 2014 15:59:59 Kate Alhola wrote:
>> > Hi, i have been doing application that uses maps. Application UI is Qml
>> but
>> > all data is generated on C++ side and once again, thee basic issue, is
>> > there any way to add items from C++ to Qml map.
>> >
>> > I used Qt4.8 and there was basically same issue, there was no way to add
>> > any C++ generated stuff on Qml map, no any way to add QGeoMapObject etc
>> to
>> > Qml map. I resolved this issue by making own QML wrapper
>> > around QGraphicsGeoMap that accepts C++ classes.
>> >
>> > Then when i switched to Qt5.3, there was no maps at all, I ported Qt4.8
>> > maps to Qt5.3 QtQuick1 and that works nicely. I also noticed that it
>> can't
>> > be ported to QtQuick2 because old maps depend on QGraphicsView.
>> >
>> > Now I checked Qt5.3 location maps with qt3d . All fine, it copmpiles and
>> > run but alsp all C++ API is gone and there is still no way to add items
>> > from C++ to map. Even all QGeoMapObjects are gone.
>>
>> The Maps C++ API was removed from the public API during the initial
>> porting to
>> Qt5. This was done because we didn't want to be tied to a C++ API that we
>> were
>> not 100% satisfied with and to focus limited developer resources on the
>> QtQuick2 implementation.
>>
>
>
> That's clear and reasonable way of working. Mostly I was missing some way
> to use
> data produced from C++ in Qml maps event with standard already defined
> C++ types like QGeoCoordinate or QList
>
> Something like
>
> in C++ ( qith all QProperty stuff )
>
> QList path;
>
> And in Qml
>
> MapPolyline {
> line.color: "blue"
> coordinates:path
> }
>
> Or similar way to have Markers.
>
>
>>
>> For the time being the best way to place a large number of similar items
>> on a
>> map from C++ is to represent those items as a QAbstractListModel and use
>> it as
>> the source model for the MapItemView in QML.
>>
>
> It looks that with this Abstract does same thing, I just need to convert
> old code from QGeoMapObjects/QList
> to QAbstractListModel . Let's see how it works
>
Least i did not find right way to do this so that it works.
>
>
>> > QDeclarativePolylineMapItem jas Path property that is type of QJSvalue
>> and
>> > that looks only possible hook to c++, create path of polyline in C++ as
>> > QJSvalua and then pass this to Qml ?
>>
>> There is also the addCoordinate()/removeCoordinate() invokable functions
>> which
>> are easier to use than constructing a QJSValue, but probably less
>> efficient if
>> adding or removing a large number of coordinates.
>>
>
> I hope that this QAbstractListModel does the thing
>
>>
>>
I Tried also QJSValue but no success by using standard QJSVallue. I was
able to construct array of strut QJSValue but I never succeeded to return
it. I searched all documentation and QTSOurce code unsucessfully. When I
look Qt Code they always used different way, so may be there is no way to
return QJSValue array using public class ?
return new QJSValuePrivate(v4, QV4::ValueRef(pathArray));
Finally only way how I did it working was to do same way it was done in
QJSValue QDeclarativePolygonMapItem::path() const
There was just one very ugly thing, it depends a bunch of private headers.
So, only working way to export map path from C++ core to Qml Map is
one that has a lot of dependency to private headers.
I hope still for future:
- Please have function to accept QList path. There is
no value added to convert it to QJSValue and then inside of iten back
to QList >
-May bey there should be ways to construct QJSValues without using a
lot of private headers.
Kate
> What sort of objects are you displaying on the map, is it just polylines?
>>
>
> The application I have is sports app that stores route of training events
> that are in current
> version displayed as QGeoMapPolylineObject . The data is generated by our
> app and stored
> in database. Application runs on Android/iOS and desktop. Because for
> usability reasons
> fast response is important, I wont add extra JS layers just copy
> coordinates etc fro C++ to Map.
>
> We started with Qt4.8 / Necessitas but now we have switched to Qt5.3
> /QtQuick1 and next
>
Re: [Development] Qt5.3 / Location Maps
Hi, Not sure what kind of custom mods you have but a module "claims" plugin ownership via MODULE_PLUGIN_TYPES = geoservices (see qtloation.pro) The plugin declares its type via PLUGIN_TYPE = geoservices (e.g. see src/plugins/geoservices/osm/osm.pro And the system enforces this in mkspecs/features/create_cmake.pf My guess is that your code doesn't do one of the above two steps. -- Alex > -Original Message- > From: development-bounces+alexander.blasche=digia@qt-project.org > [mailto:development-bounces+alexander.blasche=digia@qt-project.org] > On Behalf Of Kate Alhola > Sent: Sunday, 11 May 2014 12:54 > To: Aaron McCarthy > Cc: development@qt-project.org > Subject: Re: [Development] Qt5.3 / Location Maps > > I just updated to Qt5.3RC and noticed that something has changed in modules > build system since beta. > I was able to compile QtQuick1 maps I ported form 4.8 with Beta but mo more > with 5.3RC or least not for ios. > > > There is issue that I got error > Project ERROR: No module claims plugin type 'geoservices' > > This error did not appear in 5.3beta > > Reason is that in 5.3RC it requires mkspecs/modules/qt_lib_location.pri with > line > QT.location.plugin_types = geoservices > This file is created with new Qt5Location that requires qt3d and qt3d is not > compiling as static lib required for ios > I got QtQuick1 maps compiled for Linux/OSX/Android when I first compiled and > installed qt3d and then rebuild location with new maps even the QtQuick1 maps > does not require either of them. > > I have tried find out where this mkspecs//modules/qt_lib_location.pri ic > created > but I have not yet find out that. Least it was not required in Beta to compile > Qtquick1 maps. > > Any hints to documents how to create mkspecs/modules/qt_lib_location.pri > and any hint how to compile qt3d for ios > > Kate > > > ___ Development mailing list Development@qt-project.org http://lists.qt-project.org/mailman/listinfo/development
Re: [Development] Qt5.3 / Location Maps
I just updated to Qt5.3RC and noticed that something has changed in modules build system since beta. I was able to compile QtQuick1 maps I ported form 4.8 with Beta but mo more with 5.3RC or least not for ios. There is issue that I got error Project ERROR: No module claims plugin type 'geoservices' This error did not appear in 5.3beta Reason is that in 5.3RC it requires mkspecs/modules/qt_lib_location.pri with line QT.location.plugin_types = geoservices This file is created with new Qt5Location that requires qt3d and qt3d is not compiling as static lib required for ios I got QtQuick1 maps compiled for Linux/OSX/Android when I first compiled and installed qt3d and then rebuild location with new maps even the QtQuick1 maps does not require either of them. I have tried find out where this mkspecs//modules/qt_lib_location.pri ic created but I have not yet find out that. Least it was not required in Beta to compile Qtquick1 maps. Any hints to documents how to create mkspecs/modules/qt_lib_location.pri and any hint how to compile qt3d for ios Kate ___ Development mailing list Development@qt-project.org http://lists.qt-project.org/mailman/listinfo/development
Re: [Development] Qt5.3 / Location Maps
On Wed, May 7, 2014 at 3:41 AM, Aaron McCarthy wrote:
> Hi,
>
> On Tue, 6 May 2014 15:59:59 Kate Alhola wrote:
> > Hi, i have been doing application that uses maps. Application UI is Qml
> but
> > all data is generated on C++ side and once again, thee basic issue, is
> > there any way to add items from C++ to Qml map.
> >
> > I used Qt4.8 and there was basically same issue, there was no way to add
> > any C++ generated stuff on Qml map, no any way to add QGeoMapObject etc
> to
> > Qml map. I resolved this issue by making own QML wrapper
> > around QGraphicsGeoMap that accepts C++ classes.
> >
> > Then when i switched to Qt5.3, there was no maps at all, I ported Qt4.8
> > maps to Qt5.3 QtQuick1 and that works nicely. I also noticed that it
> can't
> > be ported to QtQuick2 because old maps depend on QGraphicsView.
> >
> > Now I checked Qt5.3 location maps with qt3d . All fine, it copmpiles and
> > run but alsp all C++ API is gone and there is still no way to add items
> > from C++ to map. Even all QGeoMapObjects are gone.
>
> The Maps C++ API was removed from the public API during the initial
> porting to
> Qt5. This was done because we didn't want to be tied to a C++ API that we
> were
> not 100% satisfied with and to focus limited developer resources on the
> QtQuick2 implementation.
>
That's clear and reasonable way of working. Mostly I was missing some way
to use
data produced from C++ in Qml maps event with standard already defined
C++ types like QGeoCoordinate or QList
Something like
in C++ ( qith all QProperty stuff )
QList path;
And in Qml
MapPolyline {
line.color: "blue"
coordinates:path
}
Or similar way to have Markers.
>
> For the time being the best way to place a large number of similar items
> on a
> map from C++ is to represent those items as a QAbstractListModel and use
> it as
> the source model for the MapItemView in QML.
>
It looks that with this Abstract does same thing, I just need to convert
old code from QGeoMapObjects/QList
to QAbstractListModel . Let's see how it works
> > QDeclarativePolylineMapItem jas Path property that is type of QJSvalue
> and
> > that looks only possible hook to c++, create path of polyline in C++ as
> > QJSvalua and then pass this to Qml ?
>
> There is also the addCoordinate()/removeCoordinate() invokable functions
> which
> are easier to use than constructing a QJSValue, but probably less
> efficient if
> adding or removing a large number of coordinates.
>
I hope that this QAbstractListModel does the thing
>
> What sort of objects are you displaying on the map, is it just polylines?
>
The application I have is sports app that stores route of training events
that are in current
version displayed as QGeoMapPolylineObject . The data is generated by our
app and stored
in database. Application runs on Android/iOS and desktop. Because for
usability reasons
fast response is important, I wont add extra JS layers just copy
coordinates etc fro C++ to Map.
We started with Qt4.8 / Necessitas but now we have switched to Qt5.3
/QtQuick1 and next
step is to go QtQuick2.
>
> > What is happening to Qt Maps C++ API ? There is still a lot of us that
> > generate data displayed on map in C++ code and use Qml only for UI
>
> There is currently a lack of developer resources working on the location
> module. The good news is that recently the number of contributions to the
> location module has increased.
>
>
That's great. If there is anything on our work that can help, i am happy to
help.
Kate
> Cheers,
>
> --
> Aaron McCarthy
> ___
> Development mailing list
> Development@qt-project.org
> http://lists.qt-project.org/mailman/listinfo/development
>
___
Development mailing list
Development@qt-project.org
http://lists.qt-project.org/mailman/listinfo/development
Re: [Development] Qt5.3 / Location Maps
Hi, On Tue, 6 May 2014 15:59:59 Kate Alhola wrote: > Hi, i have been doing application that uses maps. Application UI is Qml but > all data is generated on C++ side and once again, thee basic issue, is > there any way to add items from C++ to Qml map. > > I used Qt4.8 and there was basically same issue, there was no way to add > any C++ generated stuff on Qml map, no any way to add QGeoMapObject etc to > Qml map. I resolved this issue by making own QML wrapper > around QGraphicsGeoMap that accepts C++ classes. > > Then when i switched to Qt5.3, there was no maps at all, I ported Qt4.8 > maps to Qt5.3 QtQuick1 and that works nicely. I also noticed that it can't > be ported to QtQuick2 because old maps depend on QGraphicsView. > > Now I checked Qt5.3 location maps with qt3d . All fine, it copmpiles and > run but alsp all C++ API is gone and there is still no way to add items > from C++ to map. Even all QGeoMapObjects are gone. The Maps C++ API was removed from the public API during the initial porting to Qt5. This was done because we didn't want to be tied to a C++ API that we were not 100% satisfied with and to focus limited developer resources on the QtQuick2 implementation. For the time being the best way to place a large number of similar items on a map from C++ is to represent those items as a QAbstractListModel and use it as the source model for the MapItemView in QML. > QDeclarativePolylineMapItem jas Path property that is type of QJSvalue and > that looks only possible hook to c++, create path of polyline in C++ as > QJSvalua and then pass this to Qml ? There is also the addCoordinate()/removeCoordinate() invokable functions which are easier to use than constructing a QJSValue, but probably less efficient if adding or removing a large number of coordinates. What sort of objects are you displaying on the map, is it just polylines? > What is happening to Qt Maps C++ API ? There is still a lot of us that > generate data displayed on map in C++ code and use Qml only for UI There is currently a lack of developer resources working on the location module. The good news is that recently the number of contributions to the location module has increased. Cheers, -- Aaron McCarthy ___ Development mailing list Development@qt-project.org http://lists.qt-project.org/mailman/listinfo/development
[Development] Qt5.3 / Location Maps
Hi, i have been doing application that uses maps. Application UI is Qml but all data is generated on C++ side and once again, thee basic issue, is there any way to add items from C++ to Qml map. I used Qt4.8 and there was basically same issue, there was no way to add any C++ generated stuff on Qml map, no any way to add QGeoMapObject etc to Qml map. I resolved this issue by making own QML wrapper around QGraphicsGeoMap that accepts C++ classes. Then when i switched to Qt5.3, there was no maps at all, I ported Qt4.8 maps to Qt5.3 QtQuick1 and that works nicely. I also noticed that it can't be ported to QtQuick2 because old maps depend on QGraphicsView. Now I checked Qt5.3 location maps with qt3d . All fine, it copmpiles and run but alsp all C++ API is gone and there is still no way to add items from C++ to map. Even all QGeoMapObjects are gone. QDeclarativePolylineMapItem jas Path property that is type of QJSvalue and that looks only possible hook to c++, create path of polyline in C++ as QJSvalua and then pass this to Qml ? What is happening to Qt Maps C++ API ? There is still a lot of us that generate data displayed on map in C++ code and use Qml only for UI Kate ___ Development mailing list Development@qt-project.org http://lists.qt-project.org/mailman/listinfo/development
