[cl-cairo2-devel] X11 sample in Aug 22 version

[Joubert Nel]

On Sat, 2007-08-25 at 14:42 +0200, Tamas K Papp wrote:
> > 
> > Does it work for anybody else?
> 
> Hi Joubert,
> 
> My mistake, the X11 code has been rewritten again.  Sorry for the
> frequent changes, the only justification is that I hope it is getting
> better and cleaner each time.

No problem; I'm still in the early growing pains of my GUI framework
(busy switching from cl-cairo) so this comes with the territory. 

> 
> You will find the corrected version of x11-example.lisp on the site
> now.  In the current version, each window has its own event loop and

Got it from svn - works fine.

> thread (in the previous code, it used to be one loop/thread per
> display).  I find this approach eliminates some rare but nasty
> redrawing bugs.

> Currently, you can create xlib contexts with
> 
> (create-xlib-context width height)
> 
> and you can supply optional arguments display-name (if nil as by
> default, Xlib will use your $DISPLAY settings) and window-name
> (the title of the window).

That's good, I know previously you had to call it with ":0".

> 
> Also, in the current version you will find sync-lock, sync-unlock and
> the macro
> 
> (with-sync-lock (context)
>   ...)
>   
> which suspends redrawing the window for operations in its body.  Use
> it for drawings with lots of elements, they will appear on the screen
> at the same time, and drawing will be much faster.

I did notice the speed increase in the X11 sample.


Joubert