Re: [Interest] What for does qt5gui need OpenGL?
On 11/07/2013 07:33 PM, André Pönitz wrote: On Thu, Nov 07, 2013 at 07:51:16AM +0100, Tomasz Olszak wrote: 2013/11/7 Uwe Rathmann uwe.rathm...@tigertal.de On Wed, 06 Nov 2013 08:03:47 -0800, Thiago Macieira wrote: Shouldn't they be in Qt5OpenGL.dll? No, they are where they were supposed to be. That's by design. With some nasty consequences for us users: Our applications run on several pieces of embedded hardware, where one of them had been designed 7 years ago with a graphic chip, where only OpenGL ES 1.1 is supported. This board needs to be supported and updated for many, many years - no way to exchange it by something more recent. Even if we don't need OpenGL ( using widgets only ) we are stuck with Qt 4 forever, because Qt5 has this unnecessary OpenGL dependency. So far this had been no big problem - Qt4 is pretty fine - and there are some backports of new Qt5 features ( by the way: it would be nice to add the json classes to Qt 4.9 ), but sooner or later this will become an issue. AFAIK you can build Qt5 with no-opengl switch and you should be able to run QtWidgets applications without having libQt5OpenGl dependency in libQt5Gui. The problem is that this won't scale. One cannot provide custom builds of Qt for each realistic user configuration, let alone proactively package such stuff in large quantities. Requiring the users to run one, or one out of a few blessed configurations is likewise infeasible. Runtime detection of capabilities and selecting features _then_ is the only viable appraoch. Andre' The platform developers can and should provide custom builds of Qt 5 for their embedded platform. The fact that embedded platform developers didn't know enough about Qt to know that they could compile Qt 5 without Open GL worrys me. Also note he wants this support because of a 7 year old embedded graphic chip. What functionality did embedded devices have 7 years ago? How far can you expect to push a 7 year old embedded graphics chip? I say stay in the past with the old Qt for that ancient device and let the rest of us move in to the future. ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] Quick2 ShaderEffect: source or provider missing when binding textures
Hi Gunnar,
thanks for the reply!
Well why am I drawing without data.. There's lots of things to learn to get
the most out of Quick2. :-)
Your suggestion there solved it for me, i'm testing on Image.Ready now
and it also fixed my next issue of to prevent showing black textures before
the image was loaded. The message is gone from the log too :-)
Best regards,
Ola
2013/11/7 Sletta Gunnar gunnar.sle...@digia.com
The error message has been quite helpful with tracking down errors in
the past, but I guess we can at least remove it from release builds and
limit it a bit :) Added
https://bugreports.qt-project.org/browse/QTBUG-34676 to track this.
But why are you showing ShaderEffects which lack their image data? That
is just wasting GPU resources
ShaderEffect {
property variant source;
visible: typeof source != 'undefined' source.status == Ready
...
}
Should keep it hidden and also remove the warning...
cheers,
Gunnar
--
*Fra:*
interest-bounces+gunnar.sletta=digia@qt-project.org[interest-bounces+gunnar.sletta=
digia@qt-project.org] på vegne av Ola Røer Thorsen [o...@silentwings.no
]
*Sendt:* 7. november 2013 16:43
*To:* interest@qt-project.org
*Emne:* [Interest] Quick2 ShaderEffect: source or provider missing when
binding textures
Hi all,
if I use a ShaderEffect on an image that is loaded asynchronously, I get
the error/debug message on the console:
ShaderEffect: source or provider missing when binding textures
for every frame rendered until the image is completely loaded and the
texture is complete.
This means our system logs on the target system (embedded linux device)
gets flooded whenever we load new images (a photo viewer). Would it be
possible to at least limit the number of times this is written (once
instead of every frame)? Or could the message be removed completely? It's
not useful at all when ShaderEffect is used this way.
Best regards,
Ola
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[Interest] QTreeView / QTableView row change
Hi All, Is it possible to detect when a QTreeView / QTableView row is changed? An example is when the user changes the current row using keyboard navigation. Josh. ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] QTreeView / QTableView row change
Connect to the selectionChanged signale If you need more advanced monitoring, look into the QSelectionmanager (every view has one) Scott -Original Message- From: interest-bounces+scott=onshorecs@qt-project.org [mailto:interest-bounces+scott=onshorecs@qt-project.org] On Behalf Of Joseph W. Joshua Sent: Friday, November 8, 2013 2:21 AM To: interest@qt-project.org Subject: [Interest] QTreeView / QTableView row change Hi All, Is it possible to detect when a QTreeView / QTableView row is changed? An example is when the user changes the current row using keyboard navigation. Josh. ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] QTreeView / QTableView row change
Hi, So you mean, detect when the current row in a view is changed, not when the row content in the model is changed. Then you're looking for the currentChanged signal in QItemSelectionModel (you can get the selection model from the view via QAbstractItemView::selectionModel()) Cheers, Clément 2013/11/8 Joseph W. Joshua jos...@megvel.me.ke Hi All, Is it possible to detect when a QTreeView / QTableView row is changed? An example is when the user changes the current row using keyboard navigation. Josh. ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] QTreeView / QTableView row change
On 11/8/2013 1:26 PM, Clément Geiger wrote: Hi, So you mean, detect when the current row in a view is changed, not when the row content in the model is changed. Then you're looking for the currentChanged signal in QItemSelectionModel (you can get the selection model from the view via QAbstractItemView::selectionModel()) Cheers, Clément Thank you, I will try your suggestion. Yes, For example, when the user uses the keyboard to move through the items, I would like to respond to such events. ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] What for does qt5gui need OpenGL?
Den 07-11-2013 07:40, Uwe Rathmann skrev: On Wed, 06 Nov 2013 08:03:47 -0800, Thiago Macieira wrote: Shouldn't they be in Qt5OpenGL.dll? No, they are where they were supposed to be. That's by design. With some nasty consequences for us users: Our applications run on several pieces of embedded hardware, where one of them had been designed 7 years ago with a graphic chip, where only OpenGL ES 1.1 is supported. This board needs to be supported and updated for many, many years - no way to exchange it by something more recent. Even if we don't need OpenGL ( using widgets only ) we are stuck with Qt 4 forever, because Qt5 has this unnecessary OpenGL dependency. So far this had been no big problem - Qt4 is pretty fine - and there are some backports of new Qt5 features ( by the way: it would be nice to add the json classes to Qt 4.9 ), but sooner or later this will become an issue. There are reasons why Qt 4.8 is still the platform, where most users are, and one of them is because of such a design decision. After the switch from Qt 3 to 4, there were a bunch of companies that had to stay on Qt 3. A few even use it today. The reason is that Qt progressed into something that didn't work well for their platform. For whatever reason. With a 7 year old board, this is what you can expect to start hitting. It's so old, that you just can't expect brand new software to run on it. It's nice if it does, and recompiling Qt without GL might be your solution. But in general, there are some who will be hit when software moves on. This sucks for those who get hit. But there's no way the community can support every piece of legacy hardware used with Qt 3 or 4. Of course, the trick is to annoy as few as possible. But annoying some is inevitable. I don't think you will see a Qt 4.9. I might be wrong, but I doubt it. What you could do instead is to start a backport library for 4.8 where you put stuff like the JSON class in. Make it public in github, you're not going to be the only one stuck on Qt 4. There might be others who will contribute other classes to this. For Qt4 JSON support, I've used Eeli Reilins QtJSON and been very happy with it: https://github.com/da4c30ff/qt-json. I recommend it. Bo. -- Bo Thorsen, European Engineering Manager, ICS Integrated Computer Solutions. Delivering World-Class Applications http://ics.com/services ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
[Interest] Use Oracle 11g with Qt5.1 on MacOS
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hello, I am having an issue compiling the Qt Oracle plugin on MacOS. I downloaded the Instant Client, copied the .h files in /usr/include and the .dylib in /usr/lib (I know it's dirty, but I wanted to make sure they were available). Here is what I do to compile it: qmake-5.1 INCLUDEPATH+=/usr/include LIBS+=-L/usr/lib -lclntsh make And I get: ld: library not found for -lclntsh I guess there is something obvious that I miss here... - -- Emmanuel Bourgerie Web developer Dublin, Ireland (+353) 8 144 5278 http://bourgerie.fr/ Confus avec BEGIN PGP SIGNED MESSAGE ? http://weusepgp.info/fr Confused with BEGIN PGP SIGNED MESSAGE? http://weusepgp.info/ -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.14 (Darwin) iQEcBAEBAgAGBQJSfMRfAAoJEKKGwafy1e1+CqkH/0bn4OtgJ9C2hjKPOVJJmixk KjHJVSBwwSrjVHKKDk5LnmYRMG20Q/tW35a1ChkasLX+wjX7EpdI1p8vyTf/vNI7 IZqRspRaSoA+GyTP5Gr0ggoV8MpeYfvaC7P7KxghQRUovsXZ3Sb4e8yHcNaw5WjE A8E1o8j2eFM5BHMEV2d1zBhJhoP9bQde7gSAWp0fooh5FZtFAXyVD9/PFvHWWhsC mIMrMUVxYvA0bSmv6OTGCKBec/TA53vQM1DNupZZ/sbWLc8RZueXDwKdslZvHv8d BRA8GiNHOIxszxJPIxcHHbqBM7ZZSuujA5bTyyrV7sOSs8fFtBLXBTv8UMyDVBg= =669d -END PGP SIGNATURE- ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] What for does qt5gui need OpenGL?
For Qt4 JSON support, I've used Eeli Reilins QtJSON and been very happy with it: https://github.com/da4c30ff/qt-json. I recommend it. We've been using Flavio Castelli's QJson in our embedded project with Qt4 and it's worked out well. http://qjson.sourceforge.net/ HTH, -mandeep Bo. -- Bo Thorsen, European Engineering Manager, ICS Integrated Computer Solutions. Delivering World-Class Applications http://ics.com/services ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] What for does qt5gui need OpenGL?
On Fri, 08 Nov 2013 11:47:36 +0100, Bo Thorsen wrote: With a 7 year old board, this is what you can expect to start hitting. It's so old, that you just can't expect brand new software to run on it. The strategy of Qt5 is to introduce a new graphic stack but also to keep the old old one alive. Of course I can't expect to run something new on an outdated board, but it doesn't necessarily has to mean regression when using the old graphic stack. Almost all embedded applications with some history are running QWS/ widgets where is no comparable replacement in Qt5 ( I know nobody wants to work on QWS code for understandable reasons ). In fact this is the point where our Qt5 consideration failed - sorry for my ignorance about the no-opengl flag, but we never got so far. -- If someone is interested: we are also writing a new application on a brand new type of hardware - so no legacy issues here: Our main problem is/was, that our test department is using a VNC based test tool and beside X11 there is no easy way to get it running with Qt5 ( Qt4/QWS supports it out of the box ). For a QML application Qt5/X11 is o.k., but when using widgets only the combination Qt4/X11 offers hardware acceleration. Finally we decided to go with Qt5/X11 ( hoping for some VNC support in Wayland later ) - and for no strong reason with QML. I don't think you will see a Qt 4.9. I might be wrong, but I doubt it. What you could do instead is to start a backport library for 4.8 where you put stuff like the JSON class in. Such a backport already exists - that's why I mentioned it. Being the maintainer of the Qwt project I'm in contact with many developers of Qt applications and as far as I can see almost nobody did a Qt5 migration - even if it would be pretty easy for average desktop application code. Maybe you have a good explanation for this ? Uwe ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
[Interest] The Qt-components ML has been closed
Hi all, As previously discussed here and there, we have decided to shut down the obsolete Qt-components mailing list. The mailing list no longer served a purpose, but mainly caused confusion especially amongst new Qt users. The substituting lists are: * Interest - List for developers who _use_ Qt http://lists.qt-project.org/mailman/listinfo/interest * Development - List for developers _of_ Qt http://lists.qt-project.org/mailman/listinfo/development PS. The Qt-components archives remain accessible at http://lists.qt-project.org/pipermail/qt-components. -- J-P Nurmi ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] Performance of Qt 5.2 much slower than Qt 5.1?
Is there any change to get QSG_RENDER_TIMING=1 working on mobiles, because it works only on Desktop when set in the Projects System Environment settings. ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] Performance of Qt 5.2 much slower than Qt 5.1?
-Original Message- From: interest-bounces+kai.koehne=digia@qt-project.org [mailto:interest-bounces+kai.koehne=digia@qt-project.org] On Behalf Of David V-Play Sent: Friday, November 08, 2013 4:11 PM To: interest@qt-project.org Subject: Re: [Interest] Performance of Qt 5.2 much slower than Qt 5.1? Is there any change to get QSG_RENDER_TIMING=1 working on mobiles, because it works only on Desktop when set in the Projects System Environment settings. Which mobile OS are you using? As long as it supports environment variables and stderr setting QSG_RENDER_TIMING should work, too. Regards Kai ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] Performance of Qt 5.2 much slower than Qt 5.1?
Well, I tried it with Android (Nexus 7 and Huawai) and iOS 7 (iPad/Phone) with Qt 5.2 and the option only works on desktops. But it also does not work on desktops when I set the env manually with qputenv(QSG_RENDER_TIMING,1); Cheers, David On Fri, Nov 8, 2013 at 4:20 PM, Koehne Kai kai.koe...@digia.com wrote: -Original Message- From: interest-bounces+kai.koehne=digia@qt-project.org [mailto:interest-bounces+kai.koehne=digia@qt-project.org] On Behalf Of David V-Play Sent: Friday, November 08, 2013 4:11 PM To: interest@qt-project.org Subject: Re: [Interest] Performance of Qt 5.2 much slower than Qt 5.1? Is there any change to get QSG_RENDER_TIMING=1 working on mobiles, because it works only on Desktop when set in the Projects System Environment settings. Which mobile OS are you using? As long as it supports environment variables and stderr setting QSG_RENDER_TIMING should work, too. Regards Kai ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] Performance of Qt 5.2 much slower than Qt 5.1?
-Original Message- From: David V-Play [mailto:david.ber...@v-play.net] Sent: Friday, November 08, 2013 5:02 PM To: Koehne Kai Cc: interest@qt-project.org Subject: Re: [Interest] Performance of Qt 5.2 much slower than Qt 5.1? Well, I tried it with Android (Nexus 7 and Huawai) and iOS 7 (iPad/Phone) with Qt 5.2 and the option only works on desktops. Sounds like a bug to me. Did the environment not get applied when lauched from Qt Creator? But it also does not work on desktops when I set the env manually with qputenv(QSG_RENDER_TIMING,1); That ain't work, because the environment is only checked once at startup: static bool qsg_render_timing = !qgetenv(QSG_RENDER_TIMING).isEmpty(); Regards Kai ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
[Interest] compilation error in qdatetime
Hi
I amusing Qt5 with Visual Studio and one of my projects is giving the following
error
c:\qt\qt5.1.1\5.1.1\msvc2012\include\qtcore\qdatetime.h(121): error C2589: '('
: illegal token on right side of '::'
1c:\qt\qt5.1.1\5.1.1\msvc2012\include\qtcore\qdatetime.h(121): error C2059:
syntax error : '::'
1 moc_EventSimulator.cpp
I can get a successful compilation by adding 'NOMINMAX' to the list of pre
processor macros
I would be grateful if someone could explain why this error occurs
Thanks
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Re: [Interest] Use Oracle 11g with Qt5.1 on MacOS
On sexta-feira, 8 de novembro de 2013 11:00:47, Emmanuel Bourgerie wrote: ld: library not found for -lclntsh What's the full path to libclntsh.dylib? -- Thiago Macieira - thiago.macieira (AT) intel.com Software Architect - Intel Open Source Technology Center signature.asc Description: This is a digitally signed message part. ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
[Interest] bad behavior using window flags
Hello, I'm having some issues on setting window flags on a custom widget. I
want to toggle in/out a widget from its parent using Qt::Window and Qt::Widget
flags but it doesnt work on 100 percent of cases, sometimes (random actually)
setting the Qt::Widget flag to restore the widget as its parent content, this
child continue on a sepparate window and strange contents are draw on parent.
After this odd cases myWidget-isWindow() returns false but it still on its own
window.
BTW I start a fresh project that only contains attaching-dettaching of a
widget code and responds ok 100% of cases, but I dont know why my Widget
sometimes fails.
TIP: MyWidget is just a QWidget subclass that contains a QVideoWidget
III Escuela Internacional de Invierno en la UCI del 17 al 28 de febrero del
2014. Ver www.uci.cu--=_facf3d84-a8f5-41ca-9930-d1d40f836292
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: 7bit
htmlheadstyle type='text/css'p { margin: 0; }/style/headbodydiv
style='font-family: Times New Roman; font-size: 12pt; color: #00'Hello,
I'm having some issues on setting window flags on a custom widget. I want to
toggle in/out a widget from its parent using Qt::Window and Qt::Widget flags
but it doesnt work on 100 percent of cases, sometimes (random actually) setting
the Qt::Widget flag to restore the widget as its parent content, this child
continue on a sepparate window and strange contents are draw on parent. After
this odd cases myWidget-gt;isWindow() returns false but it still on its own
window. brBTW I start a fresh project that only contains
attaching-dettaching of a widget code and responds ok 100% of cases, but I
dont know why my Widget sometimes fails.brTIP: MyWidget is just a QWidget
subclass that contains a QVideoWidgetbr/div
br
html
body
hr align=LEFT size=1 width=630 color=Black noshade
pIII Escuela Internacional de Invierno en la UCI del 17 al 28 de febrero del
2014. Ver a href=http://www.uci.cu/; www.uci.cu /a
!--img src=http://universidad.uci.cu/cinta.png/--
/body
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br
/body/html___
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Re: [Interest] compilation error in qdatetime
On sexta-feira, 8 de novembro de 2013 16:36:14, Graham Labdon wrote:
Hi
I amusing Qt5 with Visual Studio and one of my projects is giving the
following error
c:\qt\qt5.1.1\5.1.1\msvc2012\include\qtcore\qdatetime.h(121): error C2589:
'(' : illegal token on right side of '::'
1c:\qt\qt5.1.1\5.1.1\msvc2012\include\qtcore\qdatetime.h(121): error
C2059: syntax error : '::' 1 moc_EventSimulator.cpp
I can get a successful compilation by adding 'NOMINMAX' to the list of pre
processor macros
I would be grateful if someone could explain why this error occurs
The error occurs because that line is:
static inline qint64 nullJd() { return std::numeric_limitsqint64::min(); }
If you have a macro called min, it will wreak havoc with the source code.
Please stop defining macros called min. We're in 2013.
--
Thiago Macieira - thiago.macieira (AT) intel.com
Software Architect - Intel Open Source Technology Center
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Re: [Interest] What for does qt5gui need OpenGL?
On sexta-feira, 8 de novembro de 2013 16:31:37, Mandeep Sandhu wrote: We've been using Flavio Castelli's QJson in our embedded project with Qt4 and it's worked out well. http://qjson.sourceforge.net/ I've played with it too. I would recommend using Girish's parser instead. Compared to QJsonDocument, Girish's parser is only about 10x slower. Flavio's is 30x. -- Thiago Macieira - thiago.macieira (AT) intel.com Software Architect - Intel Open Source Technology Center signature.asc Description: This is a digitally signed message part. ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] compilation error in qdatetime
I have defined a macro named min in my code!
-Original Message-
From: interest-bounces+graham.labdon=avalonsciences@qt-project.org
[mailto:interest-bounces+graham.labdon=avalonsciences@qt-project.org] On
Behalf Of Thiago Macieira
Sent: 08 November 2013 16:40
To: interest@qt-project.org
Subject: Re: [Interest] compilation error in qdatetime
On sexta-feira, 8 de novembro de 2013 16:36:14, Graham Labdon wrote:
Hi
I amusing Qt5 with Visual Studio and one of my projects is giving the
following error
c:\qt\qt5.1.1\5.1.1\msvc2012\include\qtcore\qdatetime.h(121): error C2589:
'(' : illegal token on right side of '::'
1c:\qt\qt5.1.1\5.1.1\msvc2012\include\qtcore\qdatetime.h(121): error
C2059: syntax error : '::' 1 moc_EventSimulator.cpp
I can get a successful compilation by adding 'NOMINMAX' to the list of
pre processor macros
I would be grateful if someone could explain why this error occurs
The error occurs because that line is:
static inline qint64 nullJd() { return std::numeric_limitsqint64::min(); }
If you have a macro called min, it will wreak havoc with the source code.
Please stop defining macros called min. We're in 2013.
--
Thiago Macieira - thiago.macieira (AT) intel.com
Software Architect - Intel Open Source Technology Center
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Re: [Interest] Use Oracle 11g with Qt5.1 on MacOS
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 /usr/lib/libclntsh.dylib.11.1 /usr/lib/libclntsh.dylib The second is a symlink to the first. - -- Emmanuel Bourgerie Web developer Dublin, Ireland (+353) 8 144 5278 http://bourgerie.fr/ Confus avec BEGIN PGP SIGNED MESSAGE ? http://weusepgp.info/fr Confused with BEGIN PGP SIGNED MESSAGE? http://weusepgp.info/ On 08/11/2013 16:38, Thiago Macieira wrote: On sexta-feira, 8 de novembro de 2013 11:00:47, Emmanuel Bourgerie wrote: ld: library not found for -lclntsh What's the full path to libclntsh.dylib? ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.14 (Darwin) iQEcBAEBAgAGBQJSfRnyAAoJEKKGwafy1e1+XCoIAKZI5k/1HT9Secz5YOt4UWRT DIat1l1NSmFFfQHYYHFlGYTLyXhLzvui8+x0Y897yM+lTUtaObh/vDOIMFXkHo95 gVpkPV4WPLzlQzmieJfMBm1nj3NZJp9A5vu9clhflnsyd1A/50rHOZftVh0clHg1 b0ejXtzbBLGnduahxDM+sbStz9cHCY7p/rS4qqSn75UTILY5NKWmN1qWtbW4tsDY 0ZC/7lvzWwz5+bUU2YlpWZV2UA0Rlcv/nb8pyLK8Y9pjAdbsi9QtOYg8ypwk1CX5 f5ljMQDBvYBmUdWIaoWed0trSwLBdEcFfdmH2xxlQwSKKb9jO8/UD4Iapej1EV4= =JKqw -END PGP SIGNATURE- ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] QtDBus interface design question
Hi mandeep, thanks for the answer. I was a little bit concerned, since I also want to have the possibility to sort the table, but with transfering only strings, I would loose the operator () implementation. But I think I can workaround that, by passing an enum with the sort order and let the sender to the sorting already. I'm going to do some benchmarks, how fast each of the solutions are and choose the quickest. Maybe some DBus interface design expert can suggest something else meanwhile. BR, Roland Am 08.11.2013 08:53, schrieb Mandeep Sandhu: The only solution I can imagine is to pass the entire table in one DBus message, but how. I cannot pass the objects itself, because I cannot How about returning an array of strings in the method call? Both are valid DBus types and you could probably concatenate the various properties using a delimiter and tokenize them at the receiver end. I'm no dbus expert and have mostly used QtDbus to communicate with existing services, like NetworkManager etc, so CMIIW! :) HTH, -mandeep transfer an QObject via DBus. Creating plain structs and pass them is an option but is rather dirty to me. How are DBus experts handling this? I know our DBus interface is quite complex and most others are far easier, but there must be a solution. I'm still a DBus noob, so any hint how to change the design would be very very welcome. Thanks very much Roland ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
[Interest] Context2D::createConicalGradient broken?
Hi, I just tried top use: QtQuick 2.1: var gradient = ctx.createConicalGradient(20.0, 10.0, 2.0); gradient.addColorStop(0.3, Qt.rgba(1, 0, 0, 1)); I get an exception: Property 'addColorStop' of object [object Object] is not a function Latest beta1 snapshot. My bug? Your bug? Known bug? Guido ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] What for does qt5gui need OpenGL?
On Fri, Nov 08, 2013 at 07:15:29PM +, Joseph Crowell wrote: AFAIK you can build Qt5 with no-opengl switch and you should be able to run QtWidgets applications without having libQt5OpenGl dependency in libQt5Gui. The problem is that this won't scale. One cannot provide custom builds of Qt for each realistic user configuration, let alone proactively package such stuff in large quantities. Requiring the users to run one, or one out of a few blessed configurations is likewise infeasible. Runtime detection of capabilities and selecting features _then_ is the only viable appraoch. The platform developers can and should provide custom builds of Qt 5 for their embedded platform. The fact that embedded platform developers didn't know enough about Qt to know that they could compile Qt 5 without Open GL worrys me. The platform case is not the problem as such. The worrying case are the people who need to build Qt for an unknown set of target configuration, like the typical pre-build Windows application that bundles their libraries, or even Linux distributions themselves. Andre' ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] Use Oracle 11g with Qt5.1 on MacOS
On sexta-feira, 8 de novembro de 2013 17:05:54, Emmanuel Bourgerie wrote: /usr/lib/libclntsh.dylib.11.1 /usr/lib/libclntsh.dylib Looks right. Check that the libraries are of the right architecture (x86, x86-64, ppc or ppc32). -- Thiago Macieira - thiago.macieira (AT) intel.com Software Architect - Intel Open Source Technology Center signature.asc Description: This is a digitally signed message part. ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] Use Oracle 11g with Qt5.1 on MacOS
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 They are fine AFAIK. Is there a command to double-check? Emmanuel Bourgerie Web developer Dublin, Ireland (+353) 8 144 5278 http://bourgerie.fr/ Confus avec BEGIN PGP SIGNED MESSAGE ? http://weusepgp.info/fr Confused with BEGIN PGP SIGNED MESSAGE? http://weusepgp.info/ On 08/11/13 21:42, Thiago Macieira wrote: On sexta-feira, 8 de novembro de 2013 17:05:54, Emmanuel Bourgerie wrote: /usr/lib/libclntsh.dylib.11.1 /usr/lib/libclntsh.dylib Looks right. Check that the libraries are of the right architecture (x86, x86-64, ppc or ppc32). ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.14 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJSfVs3AAoJEKKGwafy1e1+gTAH/iUHTXg2A62pH5Sd7eUmfe0P poODb7lOuvtwdnuc5vx5gE7DC6JAT6A5bEmjCwNqZ3p2bsJUvW9r6d7xYAVpCln4 24e1ViPHO9xRwDnmwiVT97zhvOIE9xzSphlgv8xaFiECkzXxaALCOVSp5NKdJldi 4DncGxaQf5Q2JvS/2e+wJeJrFCD6VFKHN0YVJxjgdA1KrfsOawnCVj+yO85iKSHC tPv7AVYcCnnFdpbWhiwwCE8oVfRUfr3I+wXxWhq54EZWuCBECFzrVQU8eXFRW6RR 5v7q3cdh9LAx5kk7h/xiM4pVG7SPaY42HHhPf8DwuJWzOiwjNMcF6PojzgtyDWA= =XZk2 -END PGP SIGNATURE- ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] compilation error in qdatetime
On sexta-feira, 8 de novembro de 2013 17:03:32, Graham Labdon wrote: I have defined a macro named min in my code! You probably meant I have *not* defined [...] I understand. But you included a header that does define one: windows.h. Stop doing that. windows.h has a facility to ask it not to define dangerous macros. You should use it. You should also only include windows.h in .cpp sources, never in headers, and always as the last thing you include (similarly for X11/Xlib.h). -- Thiago Macieira - thiago.macieira (AT) intel.com Software Architect - Intel Open Source Technology Center signature.asc Description: This is a digitally signed message part. ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] Use Oracle 11g with Qt5.1 on MacOS
On sexta-feira, 8 de novembro de 2013 21:44:23, Emmanuel Bourgerie wrote: They are fine AFAIK. Is there a command to double-check? otool should be able to print the headers, but the file command should be enough. If file says that it's a Mach-O fat binary, check which architectures are contained inside. -- Thiago Macieira - thiago.macieira (AT) intel.com Software Architect - Intel Open Source Technology Center signature.asc Description: This is a digitally signed message part. ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] QCamera and QCameraViewFinder
Thanks so much. I may be missing something, but is there an easy way to convert QVideoFrame to QImage? I can't see one. Also note that the Qt example code also has this problem: http://qt-project.org/doc/qt-5.0/qtmultimedia/multimediawidgets-camera.html also note that the basic code I posted was example code from Qt Documentation... Thanks! Josh Oh, I overlooked the code sample you provided. You should listen to the imageAvailable() signal instead of imageCaptured(). What you get from imageCaptured() is just a preview, it's emitted right after the camera sensor captured the image but at this point the final image is not processed yet. That final image is provided by imageAvailable(). You'll notice it's a QVideoFrame and you'll have to convert it to a QImage if that's what you need. Yoann Lopes Senior Software Engineer - Digia, Qt Visit us on: http://qt.digia.com On Nov 5, 2013, at 7:09 PM, Joshua Grauman wrote: Sorry, I'm using Qt5.2beta under Linux. Josh Which platform are you on? Yoann Lopes Senior Software Engineer - Digia, Qt Visit us on: http://qt.digia.com On Nov 5, 2013, at 7:14 AM, Joshua Grauman wrote: Hello all, I setup a basic use of QCamera and QCameraViewFinder that work fine. I just used the basic example in the docs to capture an image like this: camera-searchAndLock(); //on half pressed shutter button imageCapture-capture(); //on shutter button pressed camera-unlock(); //on shutter button released and had setup the viewfinder and camera like this: camera = new QCamera; viewFinder = new QCameraViewfinder(picture1); viewFinder-setSizePolicy(QSizePolicy::Maximum,QSizePolicy::Maximum); viewFinder-setGeometry(picture1-geometry()); imageCapture = new QCameraImageCapture(camera); connect(imageCapture, SIGNAL(imageCaptured(int, const QImage )), this, SLOT(gotImage(int, const QImage ))); camera-setViewfinder(viewFinder); imageCapture-setCaptureDestination(QCameraImageCapture::CaptureToBuffer); camera-setCaptureMode(QCamera::CaptureStillImage); Everything works as expected. The problem is with the exposure settings. The viewfinder looks how I want it to (properly exposed). But when I capture the image, it is under-exposed (very dark). I was hoping to get the picture that is taken to have the same exposure settings as the viewfinder since it looks fine. Does anyone know why the default settings for QCamera would be under-exposed in comparison to the viewfinder? Thanks! Josh ___ Interest mailing list Interest@qt-project.orgmailto:Interest@qt-project.orgmailto:Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
