Hi Graham,
I use a lot of PNG in my apps, plugins and stacks.
When a *correct* PNG is imported, transparency is always there
without any problem (I use Photoshop :-)
Then if you don't get the transparency, it does not seem to be a Rev
problem.
A trick in addition : if you want to have very lights images, first
you make a PNG, you install it into your stack at the right place and
then take a screenshot, crop it into any image processor and save it
as a compressed JPEG you will place exactly on your (JPEG too)
background :-)
The best way to minimise *static* images in any project.
Best Regards from Paris,
Eric Chatonet.
Le 29 nov. 05 à 23:05, graham samuel a écrit :
Folks, I've got a number of small GIFs in an app, representing
human figures - therefore not rectangular. I managed to give each
one a transparent background and RR honours this when I import the
GIFs as images (i.e. the background information on the card shows
up around the shape of the figure).
I've now started to using PNGs rather than GIFS, and I can give
them transparent backgrounds in exactly the same way as the GIFs
(GraphicConverter on the Mac is really good for this - a lot
simpler than Photoshop Elements... but I digress). However when I
import a PNG as an image, the transparency disappears and the
figure therefore appears in a white rectangle. I can fix this with
inks, but only on the Mac, and this app is destined for PC users
mostly.
I've looked at the docs, but I can't see a way of telling RR to use
the transparency in a PNG. I see a bit about Alpha Channels, but I
don't know if I'm using an Alpha Channel or not, and anyway I can't
understand how RR deals with them. I can of course convert all my
PNGs to GIFs, but is this the only solution? (This leads me to ask
if is there any disadvantage to using GIFs over PNGs - I kind of
thought there was, but I'm no longer sure why).
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