Re: [Gnome-print] Can't print TIFF file from GdkPixbuf?

[Scott Gifford <sgifford tir com>]

Lauris Kaplinski <lauris@ximian.com> writes:

> Hello!
> 
> On 22 Apr 2001 18:00:00 -0400, Scott Gifford wrote:
> > I've got some code I'm working on printing fine from .pnm files, but
> > for some reason it won't work for .tiff files.  It prints them, but
> > they look horrible; the text contained in the images is blocky and
> > unreadable.
> 
> Your tiff file contains alpha channel. As plain PostScript does not
> support transparency, images with alpha are rendered to temporary
> buffer, whose resolution is currently hardcoded to 72dpi. That buffer
> is then rendered to resultiong PostScript stream.
> I do not know, whether gdk_pixbuf treats all tiff-s as 32bit images
> (with alpha), or is there some possibility force it to use 8 or 24
> bits per pixel. I bet you do not need alpha for your image, but
> unfortunately there is no way for gnome-print to know that, if
> supplied gdk_pixbuf uses alpha ;(
> If you need image format with good non-lossy compression that is well
> supported by gdk_pixbuf (including 8 and 24 bpp), you can use png. I do
> not know much about other formats unfortunately...

Thanks, switching to PNG fixed it!  I tried PNG before, but oddly,
gdk_pixbuf doesn't seem to support mono PNGs.  

----ScottG.