On 03/02/2011 04:11 PM, Alexandru Csete wrote: > Hi Josh, > > I had a few moments to try it out. It worked very well and I think it > will be useful. > > I got a little confused when I cloned the repository because it said > there was no HEAD (or something like that) and the directory was > empty, but I could still checkout to the wip/qtgui/grc branch. I hope > I got the right thing. >
Ah, I dont have a master branch. Most people just git remote add my repo to an existing gnuradio repo. > You mention engineering notation for the widget. I believe for the > text entry it is quite straightforward (xml attached - I just copied > the code from the gr-qtgui example). > Excellent, I will try to get this in the block as an option for float/real numbers. My goal is to have engineering notation for the text box in the qwt slider. I think that involves making a custom qwt text/engine object. It seems like something qwt should support or would not be hard to implement. Not sure. http://pyqwt.sourceforge.net/doc5/reference.html Thanks! -Josh > I will do more tests during the coming days. > > Alex > > > On Wed, Mar 2, 2011 at 2:52 AM, Josh Blum <j...@joshknows.com> wrote: >> Hey list, >> >> I have been working on supporting PyQt widgets and the qtgui sinks in >> the Gnuradio Companion. Get the code on my wip/qtgui/grc branch on >> jblum.git http://gnuradio.org/cgit/jblum.git/log/?h=wip/qtgui/grc >> >> Available widgets: >> * qtgui plotter (dft, scope, etc) >> * tabbed panel >> * slider >> * combo box >> * radio buttons >> * text entry >> * label >> >> 1) The slider adds a new requirement of PyQwt (python Qwt bindings). Qwt >> should already be installed for the qtgui sinks themselves. >> >> 2) The qtgui and wxgui widgets are distinctly separated. Previously, the >> "variable slider" was a wx slider form. Now, there is a WX GUI Slider >> and a QT GUI Slider. And the generate options now have a QT GUI option. >> You cannot mix and match widgets from different graphics libraries. >> >> 3) No attempt was made to make the existence of different graphics >> toolkits transparent to the user. That would have been a huge pain on my >> part and I couldn't try new things. If this Qt thing catches on, I am >> considering a migration script from wx->qt. >> >> 4) The Qt widgets in grc do not have a python wrapper/forms library like >> they do in gnuradio. All the generated code uses the PyQt API directly. >> This is in-part possible because Qwt supplies its own set of useful >> wrappers around Qt widgets. Examples: http://qwt.sourceforge.net/sliders.png >> >> 5) Each widget block in grc has a gui hint parameter. This parameter is >> a combination of the grid parameter and notebook parameter seen in the >> wx widget blocks. It also allowed the implementation code to be a lot >> more generic. >> >> Whats missing? >> I feel that the widgets still need a bit of polishing. Engineering >> notation would be nice. I'd like to see features in the wx scope sink >> brought to the qtgui scope such as trigger modes and multiple channels. >> I think the qt equivalent of the numbersink would be nice too (and that >> could use some of those real fancy qwt widets): >> http://read.pudn.com/downloads186/sourcecode/embed/872381/qwt/doc/images/dials2.png >> >> Why qtgui stuff? >> The WX stuff in gnuradio is fairly polished in comparison; and when it >> works, it works. But we have seen many issues with wx outside of the >> linux+x86 world, not to mention opengl issues on the x86. I hope that >> the qt stuff is a viable, cross platform option for live gnuradio >> plotting and graphical applications. >> >> Please try it out. Feedback is welcome! >> -Josh >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> >> >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
