Re: backart - default backend?

[Gregory John Casamento]

--- Fred Kiefer <fredkiefer@gmx.de> wrote:

> Gregory John Casamento wrote:
> > 
> > XLib has major problems with:
> > 
> > 1) Font rendering (point sizes)
> > 2) The font panel
> > 3) Drawing to pixel instead of point.   Granted, on most displays these are
> > close, but it's enough to be a problem.
> > 
> 
> Could you please explain the problem with the font panel? 

Without going into the actual cause, which I'm not sure about, the symptom is
that the wrong font is usually displayed in the font panel or that the font is
simply displayed as "nil".   At least the last time I tried xlib, this was the
case.

> That's a GUI 
> class and I don't have any idea what the xlib backendmay do differntly here.
> 
> I know that we do the font rendering in pixel sizes, which would be easy 
> to change, but is needed because of the third problem in your list. When 
> the rest of the drawing is done in pixels than the text also has to be 
> done in pixels. If this is really annoying for people we should think 
> about scaling all points in the XGViewPointToX like functions using the 
> pixel size of the X server. I must admit that I don't like the idea to 
> much, as X draws best, when you try to draw directly on pixels, but as 
> we are already doing a lot of coordinate conversions things may just not 
> get worse. We should give it a try. At least it would solve the oldest 
> outstanding GNUstep bug report.
> One problem I see with this is that drawing would be done in point size, 
> whereas window operations are done in pixel size. How does the art 
> backend handle this?

For this, you'll have to talk to alexm.

> Fred
> 
> 
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=====
Gregory John Casamento 
-- CEO/President Open Logic Corp. (A MD Corp.)
## Maintainer of Gorm (IB Equiv.) for GNUstep.