Re: runtime version symbols (was Re: gdkpixbuf-animation: how to play without looping)

[Francesco Montorsi <f18m_cpp217828 yahoo it>]

tomas tuxteam de ha scritto:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On Thu, Sep 28, 2006 at 12:13:03PM +0200, Francesco Montorsi wrote:
> > tomas tuxteam de ha scritto:
> [...]
> > yes, right. However GdkPixbufAnimation and its iter_advance() function 
> > will automatically restart the animation when the delay of the last 
> > frame has elapsed... that is, there's no way to avoid looping it currently.
> >
> > > On the
> > > other hand, some query functions into the structure of the animation
> > > would be nice here.
> > right. I submitted a patch which adds _get_frame_count and 
> > _get_current_frame functions to GdkPixbufAnimation.
>
> Maybe there are animations where the concept of "frame count" doesn't
> make sense?
currently there's none (gdk-pixbuf currently supports GIF and ANI 
animated formats only); in future some formats, e.g animated SVG, may 
give some problem to the "frame concept". However the frame concept is 
already implied by gdkpixbuf API and in particular by 
gdk_pixbuf_animation_iter_advance().

In fact this function returns TRUE if the animation needs update, i.e. 
if a new frame must be displayed.


> > However, I've now another small conceptual problem now: consider the 
> > following code:
> >
> >          printf("compiled against gdk-pixbuf %s\n", GDK_PIXBUF_VERSION);
> >          printf("linked against gdk-pixbuf %s\n\n", gdk_pixbuf_version);
> >
> > if I dynamically link my program on my linux which has e.g. gdk-pixbuf 
> > version 2.10.3 installed, and then run that binary on another linux 
> > which has gdk-pixbuf 2.8 installed, will I get
> >
> > compiled against gdk-pixbuf 2.10.3
> > linked against gdk-pixbuf 2.8.0
> >
> > or rather:
> >
> > compiled against gdk-pixbuf 2.10.3
> > linked against gdk-pixbuf 2.10.3
> >
> > ?
> >
> > I think the first: i.e. gdk_pixbuf_version contains the version of the 
> > dynamically loaded library, but I just want to be sure...
>
> According to the docs it should be the first: gdk_pixbuf_version is an
> external variable which lives in the lib (so it should reflect the lib's
> version) while GDK_PIXBUF_VERSION is a C preprocessor macro which gets
> "burnt into" your code at compile time.
Ok, thanks for the confirmation.

Thanks,
Francesco

Chiacchiera con i tuoi amici in tempo reale! 
http://it.yahoo.com/mail_it/foot/*http://it.messenger.yahoo.com