Re: GTKImage displays after long latency

[Owen Taylor <otaylor redhat com>]

On Tue, 2005-08-30 at 14:41 -0700, Barry Demchak wrote:
> Hi --
>
> This is my first GTK application, and I'm "simply" trying to display an SVG 
> rendering in a window. I can do this OK, but it appears that there is a 
> latency of ~2000ms between assigning the pixbuf into the GTKImage widget 
> and actually seeing the result on the screen.
>
> FYI, the scribble example works fine on my system ... so I don't think 
> there's something wrong with the system ... more likely a gap in my GTK 
> knowledge.
>
> Here's what I'm doing:
>
>    GdkPixbuf *pb = rsvg_pixbuf_from_file_at_size("circle.svg",-1,-1,NULL);
>    gtk_image_set_from_pixbuf((GtkImage*) mapimage, pb);
>
> And before that, this is what I did:
>
>    GtkWidget *mapimage = NULL;
>    GdkPixbuf *pb = rsvg_pixbuf_from_file_at_size("circle.svg",-1,-1,NULL);
>    mapimage = gtk_image_new_from_pixbuf(pb);
>
> I can see that scribble does things quite differently ...
>
> ... should I be trying to get librsvg to render into something besides a 
> new pixbuf??
>
> (I'm quite sure that the librsvg call is finished, and the 
> gtk_image_new_from_pixbuf has finished ... and *then* it takes 2 seconds to 
> show up on the screen.)

Could librsvg be rendering your image at an enormous size?

You might want to gdk_pixbuf_get_width(), gdk_pixbuf_get_height()

Regards,
                                        Owen