Re: Confused about nautilus thumbnails

[Nyall <nyall zombiepigs net>]

Hmmm... see, I read through that fdo spec, and what I thought would
happen is:
- If the nautilus icon size <= 128, then create a 128 sized thumbnail in
the .thumbnails/normal directory. Then resize it down to fit the icon
size.
- Else, if the nautilus icon size > 128, then create a 256 sized
thumbnail, save it in the .thumbnails/large directory, and resize it up
or down to fit the nautilus icon size.

But flicking through the nautilus source code, i'm only seeing
references to GNOME_THUMBNAIL_SIZE_NORMAL - so I guess nautilus never
uses the .thumbnails/large 256 sized thumbnails?

(I should also add, my thumbnailer works fine when nautilus icons are
smaller than 128, it's only on larger sizes that I run into problems)

On Sun, 2008-03-30 at 20:51 -0400, A. Walton wrote:
> On Sun, Mar 30, 2008 at 8:29 PM, Nyall <nyall zombiepigs net> wrote:
> > I'm trying to create a thumbnailer for .gcs files, using the
> >  instructions from
> >  http://library.gnome.org/devel/integration-guide/stable/thumbnailer.html.en
> >
> >  I can get the thumbnailer working fine, and it all shows up nicely in
> >  nautilus when the view size is 100%, but when I zoom in on the
> >  thumbnails in nautilus they get horribly pixelated. This doesn't happen
> >  with image files - I can zoom in and the thumbnails are recreated nicely
> >  and look fantastic. So I've been trying to track down what's going
> >  wrong.
> >
> >  What I've found so far is that whenever nautilus calls my thumbnailer,
> >  it's requesting a size of 128. This is regardless of the current zoom
> >  level in nautilus. Digging a little deeper, I suspect this could be
> >  happening with a lot of different thumbnailers - eg, the evince pdf
> >  thumbnailer seems to have the same behaviour.
> >
> >  So I'm confused - is this expected behaviour, a bug in my thumbnailer,
> >  or a bug in nautilus?
> >
> >  Any help would be greatly appreciated!
> >  Cheers,
> >  Nyall
> >
> 
> This is expected behavior, in accordance to the FD.O Thumbnail spec
> [1]. So it's likely a bug in your thumbnailer in this case. Then again
> the thumbnailing spec could probably use some clarification (as it
> apparently does permit applications to create smaller thumbnails,
> which are ugly when scaled up).
> 
> -A.Walton
> 
> [1] :http://people.freedesktop.org/~vuntz/thumbnail-spec-cache/
> >
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> >  nautilus-list gnome org
> >  http://mail.gnome.org/mailman/listinfo/nautilus-list
> >