Theo Zweers wrote:
>
>
> Tim Doty schreef:
> > On Sunday 06 May 2007, Theo Zweers wrote:
> >
>; >> Tim Doty wrote:
> >>
> >>> On Sunday 06 May 2007, Rodney Lee Volkmar wrote:
> >>>
> >>>> 32 bit .png work with Transparncy
> >>>>
> >>> Really? Not here they don't. The alpha-channel becomes all black. I
> don't
> >>> remember if that was on-screen or printing.
> >>>
> >> Yes, copying the .png from another program (for instance: IrfanView, or
> >> a browser) into PGS gives this black alpha-channel.
> >>
> >> However if you export or save as such a picture as .png, and placing
> >> (loading) that .png into PGS gives transparant Alpha-channel.
> >> In a browser: right click at the .png link and do a Save link as... and
> >> save it anywhere on your harddisk. Place this .png into PGS.
>; >> Both methods work, at least in PGS 5.0.3.4 Windows.
> >>
> >> (Tim is working mostly with the Linux-version of latest PGS-version)
> >>
> >
>; > Yep, I'm using PgS on linux. For this purpose my windows install
> doesn't help
>; > because, as testing it just now shows, the problem is when printing.
> Or...
> >
>; > New Document
> > Import png with alpha transparency, it displays perfectly
> > Print document (to a postscript printer), the alpha channel is
> printed black
> >
>;
> Import in PGS also OK (I never looked further...).
> I now made a grayed box and put this behind the transparant .png. On
> screen, in PGS, it looks OK.
> I 'print' this as PostScript, and let this be made into a pdf with
>; Acrobat Distiller.
>
> The .pdf shows a not (!) transparent .png with the grayed box behind
> this. The alpha channel is white (and not black!), the other alpha
> channel (blue) is also not transparent.
>
> The .png is the IBM-logo and is found at
> http://en.wikipedia.org/wiki/Image:IBM_logo.png
> <http://en.wikipedia.org/wiki/Image:IBM_logo.png>;
>
> > My windows install is currently unable to print anything (my
> unreasonable
> > requirement that Win2k must print via IPP -- mostly doesn't work and
> right
> > now completely doesn't work)
> >
>; > Tim Doty
>; >
>;
> Theo
Remember when we went from v2.2 to v3.0? V2.2 supported transparency but
v3.0 did not. They said it was because PostScript didn't support
transparency. I don't know because I haven't used PostScript. My Brother
HL-5050 has it's own version of PostScript, but you have to download
your fonts into it to use other than its own default fonts so I've never
bothered.
Anyway there was some discussion about PostScript not supporting
transparency.
My solution has been to mask objects, which works for my non-PostScript
printers. I usually generate a mask and then select the Reshape tool and
complete the vertical parts of the mask.
--
DAVID L. STEVENS -- TEAM AMIGA --Chapter Chat Publisher
Windows XP user (:^(> on Acer Aspire 9810 2.16 GHz Notebook
2 GB RAM; 2 120-GB Hard Drives; CanoScan LIDE 20
Canon i860 & Brother HL-5050 PageStream v5.0.2.10Pro
<http://davestevens.home.insightbb.com>;
Kill your television.
.
