Hi, I am wondering why you suggested to use V8 instead of QtScript? is it a module that will be dropped in a near future?
Best regards, Sylvain On Mon, Sep 12, 2011 at 10:40 AM, <[email protected]> wrote: > The merge will happen tomorrow morning, Oslo time. > > On Sep 5, 2011, at 11:41 AM, ext [email protected] wrote: > > > Hi, > > > > We are getting closer to the point where we integrate the Qt refactor > branch. What this branch does is that it separates most of Qt's desktop > widgets along with a number of currently less actively developed modules > into their own libraries, in accordance with the module maturity list we > published earlier this year and in line with Lars' blog about the intent of > Qt 5. The over all goal is to simplify our graphics stack, minimize our > platform/device dependent layer (lighthouse integration) and make sure QML > and OpenGL are prime citizens in Qt 5. > > > > These branches are not at feature parity with Qt 4.7 yet, and nor will > they be for a quite some time. But we want to push the changes into the > master codeline so that the structure we have mentioned in blogs and other > forums gets visible in terms of code. > > > > Currently we have "official" support for single-window, QML 2 based on > OpenGL on Linux/X11, Linux/XCB, Linux/Wayland and Mac OS X. There is some > rudimentary support for the same setup on Windows, but it is still work in > progress. Our stack works on top of Software Mesa (very slow), LLVMpipe > (very fast) in addition to real OpenGL hardware (usually fastest). > > > > Standard widget based applications still works, but they are not our > current priority. We will pick this up once the QML 2 stack is more > complete. > > > > We're expecting to merge into master in 1-2 weeks time. > > > > What are the changes in practice? > > - code that use widgets need to add "QT += widgets" in their .pro file > > - code that includes <QtGui/QLabel> or similar needs to be updated to > <QtWidgets/QLabel>. The helper script "fixqt4headers" in QTDIR/bin does this > for you. Run it in the root directory and you are done. > > - There is a new suite of OpenGL classes inside QtGUI, named QOpenGLXxx > which integrates tightly with lighthouse. To keep changes to existing code > minimal, we decided to keep the existing libQtOpenGL classes pretty much as > is without any changes, and rather introduce new classes in QtGui for the > classes we wanted. > > - Printing support has been moved into its own library, > libQtPrintSupport. We have a long term plan of creating a better printing > API, covered inhttps://bugreports.qt.nokia.com//browse/QTBUG-19951, so we > have spent some effort in removing the dependency on the current API's from > the "Qt essentials". The API is unchanged. > > > > > > Can I expect any performance changes? > > - No. This is about removing a large chunk of code to make our stack > simpler to maintain and to have smaller footprint. > > > > > > What can I plan for? > > - In new projects, see if you can use QML 2 instead of QWidgets. > > - In new projects, see if you can use QML 2 instead of QML 1. > > - In new projects, see if you can use V8 instead of QtScript. (QJSValue > and QJSEngine classes in libQtDeclarative) > > - In new projects, see if you can use OpenGL functionality in QtGui > instead of libQtOpenGL.so > > > > > > What does this means for you right away? > > - If you upgrade to Qt5 with refactor, you need to update the includes > and add widgets/script/qtquick1 to your .pro files > > > > > > What does this means long term? > > - None of the existing libraries > > > > I hope this transition will be as painless as possible for everyone. If > you have further questions, don't hesitate to ask > > > > - > > Gunnar > > _______________________________________________ > > Qt5-feedback mailing list > > [email protected] > > http://lists.qt.nokia.com/mailman/listinfo/qt5-feedback > > _______________________________________________ > Qt5-feedback mailing list > [email protected] > http://lists.qt.nokia.com/mailman/listinfo/qt5-feedback >
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