Re: Gtk::Gdk::Pixmap: load from PNG or JPEG file

[Paolo Molaro <lupus ximian com>]

On 11/19/01 Alvaro del Castillo wrote:
> > Hi Perl hackers,
> >
> > I'm using a Gtk::DrawingArea and draw Gtk::Gdk::Pixmaps on it. This 
> > works fine, so far. I initialize the Pixmap from a xpm file.
> >
> > But xpm is a bad format to work with in real world szenarios, so I want
> > to load PNG or JPEG files. I checked the Gdk::Imlib reference 
> > documentation and tried this:
>
> I think that Imlib is an obsoleted library. Try GdkPixBuf better.

Well, that doesn't mean it should stop working:-)

> >     my $image = Gtk::Gdk::ImlibImage->load_image ($filename);
> >     my $gdk_pixmap = $image->copy_image;
> >
> > But $gdk_pixmap is always undef. The same result with 
> > $image->move_image.

You need to render the image to a pixmap before retrieving the pixmap:

        $image->render ($image->rgb_width, $image->rgb_height);
        $gdk_pixmap = $image->copy_image;
        ....

You may also use render() to scale the image, just provide the wanted
width and height.

lupus

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