Subject: RE : [linux-audio-dev] Audio-related widgets with Qt ?
From: xavier.moulet_AT_free.fr
Date: Fri Sep 14 2001 - 14:43:40 EEST
>I know people have implementations of these (at least I have) and it would
>be nice to have such widgets as one high-quality package. Thus I'd like to
>ask if Qt-users would like to take part in writing such widgets into a
>stand-alone library form ?
Yup, that would be a great thing.
>Stuff that many of us need:
>1) Level meter (with axis information)
>2) EQ curve display (with axis information)
>3) Waveform display (with properly threaded background preview
> calculations and saves)
>4) Knobs (Logic Audio has a few nice ideas in this)
sure. But doesn't Qt have QDial for this ? (OK it wouldn't hurt to make a
better QDial. Or at least theme it better.
>4) What else?
Envelope editor ! A la GTK : linear/"bitmap" (each pixel has an independant
value)/spline. now THAT would be useful. BTW does anyone have a Qt
implementation of something like that ?
>I have (more or less incomplete) stand-alone implementations of topics 1,
>2 and 4.
>The waveform display is the most challenging one, it probably needs two
>parts: A) A threaded engine that calculates the preview files and B) A
>waveform renderer that could be used upon any widget.
I think that a widget shouldn't create peakfiles. They should be provided to it
with another thread, but what if I have peak files and I don't want a
multithreaded app (because I use bindings of those apps in a nothreads-perl-Qt
prog ?) Shortly : A and B shall be separated and optional to each other.
This archive was generated by hypermail 2b28 : Fri Sep 14 2001 - 21:33:41 EEST