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List:       gtk-app-devel
Subject:    Re: How to convert a jpg image to a GtkImage ?
From:       "Jonathan Winterflood" <jonathan.winterflood () gmail ! com>
Date:       2007-09-11 20:53:02
Message-ID: c4d872350709111353g4112a78bn2b4f730d25686b91 () mail ! gmail ! com
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You'd probably looking for a copy-constructor for the pixbuf for cloning...
Also, the pixel-copying would be handled by a single method
call on the pixbuf.

As for adding a click to the reference count, if it works, would probably be
the best way to go (I admit I don't quite understand the implications...
I'm quite used to java you see...)

Jonathan

On 9/11/07, Tom Trebisky <tom@mmto.org> wrote:
>
> On Tue, Sep 11, 2007 at 10:29:45PM +0200, Jonathan Winterflood wrote:
> > Hi,
> >
> > You could clone the
> > pixbuf, or create a new one the same size and blit the content of the
> > soon-to-be recycled one into the new one before unref'ing the loader
>
> Cloning sounds like just what I want to do, I'll go see if I can find
> a generic object cloning routine - or I will just live with whatever
> extra baggage the pixbuf_loader leaves around.  The ideal thing, so
> as to avoid copying oodles of pixels, would be to tick the reference
> count for the pixbuf the loader has so that it will stick around
> when I unref the loader.
>
>         Thanks!
>
> > Jonathan
> >
> > On 9/11/07, Tom Trebisky <tom@mmto.org> wrote:
> > >
> > > Following this thread, I decided it would be wise to avoid this kind
> > > of leak since my application uses hundreds of loaders to load
> > > hundreds of pixbufs, so I made my code look like:
> > >
> > >         pixbuf_p = gdk_pixbuf_loader_get_pixbuf(my_loader);
> > >         g_object_unref ( my_loader);
> > >
> > >         add_to_my_list ( pixbuf_p );
> > >
> > > However, this apparently frees up the pixbuf as well, and everything
> goes
> > > to hell in a handbasket as pixbuf_p is now a reference to some piece
> > > of recycled memory or something like that.  How does one free up the
> > > loader but retain the pixbuf ?
> > >
> > >         Tom
> > >
> > > --
> > > Tom Trebisky
> > > MMT Observatory
> > > University of Arizona -- Tucson
> > > tom@mmto.org
> > > _______________________________________________
> > > gtk-app-devel-list mailing list
> > > gtk-app-devel-list@gnome.org
> > > http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
> > >
> >
> >
> >
> > --
> > <Morpheus> linux, c'est une question de VI ou de MORE
>
> --
> Tom Trebisky
> MMT Observatory
> University of Arizona -- Tucson
> tom@mmto.org
>



-- 
<Morpheus> linux, c'est une question de VI ou de MORE
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