linuxaudio.org

On Mon, 21 Nov 2011 18:33:38 -0500

David Robillard  wrote:
> On Mon, 2011-11-21 at 22:57 +0000, Fons Adriaensen wrote:

quoted text
> > On Mon, Nov 21, 2011 at 11:42:31PM +0100, Nick Copeland wrote:

> > >

> > > > Subject: Re: [LAD] "bleeding edge html5" has interesting Audio

> > > > APIs From: d@drobilla.net

> > > >

> > > >  All we need is a couple of sliders and knobs and such.  It's

> > > > quite straight forward

> > >

> > > Ah, is that all we need? I never realised it was so simple. Can I

> > > have them in some dull, boring grey colour with sad square boxes?

> > > You know, something that really inspires and that will convince

> > > every iPad user that their ubercool GUI are a total waste of

> > > time. Can you do that for me? That would be a killer!

> >

> > Even almost every GUI toolkit sliders fails when used for

> > anything serious in audio. Try tuning your oscillators in

> > e.g. AMS when the auto-resizing frequency slider happens to

> > have 27.142857 steps per octave.

>

> For stuff like this you need a way to enter precise values with a

> corresponding text box anyway.

>

> Though the old fan slider idea was a pretty good one...

Earlier this year I tried updating the PHAT toolkit to use the Cairo

backend for rendering (because the drawing code used by PHAT to

render the fans is deprecated).
The problem I found was that in order to get Cairo to draw the phans

on the desktop (without obliterating the desktop) desktop compositing

was required. I went round in circles looking at the documentation

trying to find a way to get it working without compositing enabled

(and without using deprecated code) but by the time I got to looking in

the GTK source itself I decided to make the fans optional while

additionally allowing shift to be used in combination without dragging

the slider for greater precision (and ctrl for even more).
I called it 'phin' and it can be found in the petri-foo source if you

want to look.
James.
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