Re: [Interest] terrible font rendering with QtQuick
Thanks, Ian. problem solved. Regards Evince Moi On Thu, May 29, 2014 at 1:42 PM, Ian Monroe i...@monroe.nu wrote: On May 28, 2014 10:37 PM, bane yue bane...@gmail.com wrote: It finally works! thanks you, Ian. Now i know *how* to do it, but *don't know* why to do it this way, would you mind to tell me more about this, much appreciated. Regards Evince Moi Windows OpenGL drivers are notoriously bad, that's the reason ANGLE was created. With that llvmpipe Mesa library you aren't using the GPU directly, it's traditional Windows GDI calls. Ian ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] terrible font rendering with QtQuick
On Wednesday 28 May 2014 22:42:44 Ian Monroe wrote: On May 28, 2014 10:37 PM, bane yue bane...@gmail.com wrote: It finally works! thanks you, Ian. Now i know *how* to do it, but *don't know* why to do it this way, would you mind to tell me more about this, much appreciated. Regards Evince Moi Windows OpenGL drivers are notoriously bad, that's the reason ANGLE was created. With that llvmpipe Mesa library you aren't using the GPU directly, it's traditional Windows GDI calls. You could also try updating the OpenGL drivers to the latest version. The Intel drivers have improved vastly over the last 12 months. Cheers, Sean -- Dr Sean Harmer | sean.har...@kdab.com | Managing Director UK Klarälvdalens Datakonsult AB, a KDAB Group company Tel. Sweden (HQ) +46-563-540090, USA +1-866-777-KDAB(5322) KDAB - Qt Experts - Platform-independent software solutions ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] terrible font rendering with QtQuick
You could also try updating the OpenGL drivers to the latest version of cause i tried that, that was the first thing i did after the problem exploded, but with no luck. The openGL version of the testing XP machine is 2.1, which is enough for Qt (openGL 2+), Obviously Qt does not use that. From: Sean Harmer Date: 2014-05-29 18:05 To: interest CC: Ian Monroe; bane yue Subject: Re: [Interest] terrible font rendering with QtQuick On Wednesday 28 May 2014 22:42:44 Ian Monroe wrote: On May 28, 2014 10:37 PM, bane yue bane...@gmail.com wrote: It finally works! thanks you, Ian. Now i know *how* to do it, but *don't know* why to do it this way, would you mind to tell me more about this, much appreciated. Regards Evince Moi Windows OpenGL drivers are notoriously bad, that's the reason ANGLE was created. With that llvmpipe Mesa library you aren't using the GPU directly, it's traditional Windows GDI calls. You could also try updating the OpenGL drivers to the latest version. The Intel drivers have improved vastly over the last 12 months. Cheers, Sean -- Dr Sean Harmer | sean.har...@kdab.com | Managing Director UK Klarälvdalens Datakonsult AB, a KDAB Group company Tel. Sweden (HQ) +46-563-540090, USA +1-866-777-KDAB(5322) KDAB - Qt Experts - Platform-independent software solutions ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] QtQuickCompiler alternative
Sorry for the late answer, I did profile the application and also
tried with only a black Rectangle {} in a test. Profiling shows
everything ready @140ms. It still feels like 1sec from click to
application show-up, other Qt/gtk apps doesn't feel that way. Is there
a way that the main.cpp renders just a window first and then puts the
ui into it?
2014-05-23 14:24 GMT+03:00 Torgeir Lilleskog torgeir.lilles...@gmail.com:
On Fri, May 23, 2014 at 10:36 AM, jen...@gmail.com wrote:
Perhaps it is time spent populating the font database as we have had some
issues with that in the past.
This is my suspicion also.
I was able to reproduce the slow startup in a Kubuntu setup. (Un)fortunately
I also has started an upgrade to Kubuntu trusty 14.04 at the same time and
when I got back to profiling it I couldn't reproduce it anymore.
I put a qDebug() output at the start of main() and saw messages from
fontconfig appear ~1s after.
The errors that I saw wrt fontconfig were gone after the Kubuntu upgrade.
Best regards,
- Torgeir
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Re: [Interest] terrible font rendering with QtQuick
Il 29/05/2014 12:17, bane...@gmail.com ha scritto: The openGL version of the testing XP machine is 2.1, which is enough for Qt (openGL 2+), Obviously Qt does not use that. Actually the problem is that Qt uses it (because Qt doesn't know it's broken), resulting in glitches. That's why we have ANGLE and llvmpipe as workarounds. -- Join us Oct 6-8 at BCC Berlin for Qt Developer Days 2014! Giuseppe D'Angelo | giuseppe.dang...@kdab.com | Software Engineer KDAB (UK) Ltd., a KDAB Group company Tel. UK +44-1738-450410, Sweden (HQ) +46-563-540090 KDAB - Qt Experts - Platform-independent software solutions smime.p7s Description: Firma crittografica S/MIME ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
[Interest] Refreshing Audio Device List
Hello,
I'm maintaining a combobox with a list of the audio devices obtained
from QAudioDeviceInfo::availableDevices() and I'd like to refresh the
list with a refresh button. However, re-executing
audioDeviceList = QAudioDeviceInfo::availableDevices(QAudio::AudioInput);
within the same running application doesn't update the device list.
If I exit the app and restart, it shows me the new device list. I'm
hot-plugging a USB audio device in and out.
How do I get a refreshed availableDevices()?
Note that I found an almost identical bug reported here:
https://bugreports.qt-project.org/browse/QTBUG-16842?page=com.atlassian.jira.plugin.system.issuetabpanels:changehistory-tabpanel
The reporter said the problem went away when using QApplication instead
of QCoreApplication, but I'm already using QApplication:
#include cvrgui.h include cvrguiwindow.h include
#QApplication int main(int argc, char* argv[]) {
Q_INIT_RESOURCE(cvrgui); QApplication app(argc, argv);
app.setApplicationName(Continuous Voice Recognition GUI);
app.setOrganizationName(Digital Signal Labs);
CvrGuiWindow cvrGui; cvrGui.show();
return app.exec();
}
Any help would be appreciated.
--
Randy Yates
Digital Signal Labs
http://www.digitalsignallabs.com
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[Interest] binding two QML object within C++
Hello,
I'm trying to do something that seems very simple, but I can't find a
solution anywhere. If I have two QML items that I've created from
components in C++, how do I bind a property on one to follow a property on
the other one? Here's a simple example:
// Simple.qml
Rectangle
{
property bool myBool : false
}
// C++ code
QQmlComponent simpleFactory;
simpleFactory.loadUrl(QUrl(qrc:///Qml/Simple.qml));
QQuickItem* item1 = qobject_castQQuickItem*(m_simpleFactory.create());
QQuickItem* item2 = qobject_castQQuickItem*(m_simpleFactory.create());
// how do I bind item2's myBool to the value of item1's myBool?
This is very simply done within QML, but I don't see how to do that glue in
C++.
Any help would be appreciated,
Alex
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Re: [Interest] binding two QML object within C++
Em qui 29 maio 2014, às 12:35:11, Alex Montgomery escreveu: // C++ code QQmlComponent simpleFactory; simpleFactory.loadUrl(QUrl(qrc:///Qml/Simple.qml)); QQuickItem* item1 = qobject_castQQuickItem*(m_simpleFactory.create()); QQuickItem* item2 = qobject_castQQuickItem*(m_simpleFactory.create()); // how do I bind item2's myBool to the value of item1's myBool? This is very simply done within QML, but I don't see how to do that glue in C++. It doesn't exist. -- Thiago Macieira - thiago.macieira (AT) intel.com Software Architect - Intel Open Source Technology Center ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] binding two QML object within C++
On Thu, May 29, 2014 at 12:35 PM, Alex Montgomery apmontgom...@gmail.com wrote: Hello, I'm trying to do something that seems very simple, but I can't find a solution anywhere. If I have two QML items that I've created from components in C++, how do I bind a property on one to follow a property on the other one? Seems like it would be pretty easy to create a generic 'bind' function. QMetaProperty has everything you need. Ian ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
