Re: Image size, DPI (was Re: Gorm is broken)

[Fred Kiefer]

-------- Original-Nachricht --------
> Datum: Sun, 08 May 2011 01:32:58 +0200
> Von: Riccardo Mottola <address@hidden>
> An: Eric Wasylishen <address@hidden>
> CC: Developer GNUstep <address@hidden>
> Betreff: Re: Image size, DPI (was Re: Gorm is broken)

> Hi,
> > On a related note, I think the Cairo backend also rounds the coordinates
> of path points - shouldn't we get rid of that as well?
> >    
> I think that perhaps we should. But it is a delicate issue. Try 
> Graphos:play with it drawing boxes and lines especially, check our 
> various backends and check cocoa. Try different line widths. My 
> impression is that on cairo everything is always blurred :) Xlib of 
> course never since it has no anti-aliasing. But Cocoa isn't as "bad" as 
> cairo, it usually looks fine for integer line  widths.

If I remember correctly the code here tries to avoid bluring for lines that the 
programmer would expect to be exactly horizontal or vertical oriented. This is 
the standard approach used by all cairo applications I know of. We should add a 
lot of tests before we change this.