Re: Multimedia widgets in GTK+?

[Tim Janik <timj imendio com>]

On Fri, 9 Mar 2007, Stefan Kost wrote:

> Hi Bastien,
>
> I found the BaconVolume quite useful So +1 from myself too. Other things that I
> miss:
> * a volume-meter
>  I use GtkVUMeter right now, I would like to see a input/output vu-meters in
>  the mixer. this is a good indicator for people to trac down why the don't hear
>  their music. is the mixer volume down or is it the amplifiers.
>  problem with the GtkVUMeter widget is that it has no license and the guy who
>  wrote it does not reply. So we would need a 'new' one.

beast has LGPL licensed scale/meter code
  http://svn.gnome.org/viewcvs/beast/trunk/beast-gtk/bstdbmeter.h?view=markup
  http://svn.gnome.org/viewcvs/beast/trunk/beast-gtk/bstdbmeter.c?view=markup

you can see that in action in this screenshot:

  http://beast.gtk.org/screenshots?image=screenshotdir/stwZ07-audio_mixer.png

> * better ruler widgets
>  yes, I reead the comments that rules wont be extended.

the gtk rulers have recently been extended to at least support fill-level.

>  anyway, I miss there:
>  * disabling the arrows that listen to the mouse moves,

you can use scales without arrows in gtk, take a look at the above screenshot.

>  * logarithmic scales,

scale transformations can be implemented as adjustments, see for instance
the logarithmic adjustments used in beast:
  http://svn.gnome.org/viewcvs/beast/trunk/beast-gtk/gxk/gxklogadjustment.h?view=markup
  http://svn.gnome.org/viewcvs/beast/trunk/beast-gtk/gxk/gxklogadjustment.c?view=markup 
that code also contains a more generic GxkAdapterAdjustment which allows
arbitrary adjustment value mappings - the beast implementation supports arbitrary
spline curves for the value mapping of it's mixer meters:
  http://svn.gnome.org/viewcvs/beast/trunk/beast-gtk/gxk/splinetest.c?view=markup


>  * a unit label
>  * numbers/labels on *some* ticks
>
> Stefan

---
ciaoTJ