Re: [Bug-gnubg] GTK themes for GNUBG

[Øystein Johansen]

Albert Silver wrote:

> I went and read the Readme. I'm not sure I understood correctly, but
> here is a key excerpt from it:
>
> "Seems as we have to wait, until the PHP-GTK supports GTK2.
> BUT: The libpixmap is just for loading images OTHER THAN XPM.
> -> You can replace the pictures in the themes with *.xpm images (use
> GIMP to convert the pictures).
> Remember the pixmap path /share/gtk/themes/ - you should rename the xpm
> files to a leading "{THEME_NAME}_*.xpm
> The "brushed" themes shows that pictures are possible."
>  
It's a bit of a misunderstanding, or badly written by Christian. The 
pixmap engine does more than just read pictures in other formats. It can 
rescale and, flip and mirror images. All these because the theme engine 
is based on the library libpixbuf (or something..) This library make 
makes nice images under early versions of GNOME (pre 2.0). This library 
in "impossible" to to port to Win32. Since it mixes Xlib and many other 
non Windows standard X libraries. And the code is a mess! It was 
rewritten for GNOME 2.0 and left out development, but it's still in use 
for the pixmap engine for GTK 1.2.

Yes, you can have images as the background of a GTK button or a surface 
of GNU Backgammon, just try the gnubg.gtkrc file in gnubg/themes/brushed 
(Just copy the file to c:\Program Files\gnubg and restart.), but this 
won't use the pixmap theme engine. If you want a theme which looks like 
Aqua, you can probaly convert some of the png files to xpm files, and 
hack you gnubg.gtkrc file. That would be great, but remember you can't 
rescale the images run time, and you can't flip them. (Which is what's 
done for the scrollbars for instance).

> What exactly does the author mean by it working if the pictures are
> converted to .xpm format? I am unfamiliar with the format, but it sounds
> as if the PixMap issue is only a temporary one if one converts the
> pictures to this format, no? Or did I misunderstand what he wrote?
>  
xpm is a very simple graphic format, which is used a lot in programming. 
It's described in ASCII characters. Look at the source code of gnubg, 
and you will find that the buttons in the toolbar is written in xpm format.

-Øystein