[Image-SIG] GIF or PNG transparency
Scott Russell
scott@portalsmith.net
Thu, 08 Feb 2001 09:13:48 -0500
I think this is a FAQ, but since I can't find any solid answers in the
archive, I was hoping for a definitive answer.
How do you create transparent images in PIL? I'm hoping for IE-happy
PNGs, but can live with GIFs. Here is the method I'm trying now (I've
tried several, but this one was reccomended in another archive entry)
>>> import Image
>>> img = Image.new("RGB",(100,100),(0,100,200))
>>> img = img.convert("RGBA")
>>> img.paste((100,0,200,255),(0,0,100,100))
>>> img.paste((0,0,0,0),(20,20,80,80))
>>> img.save("region-13.png")
The 'transparent' sections come up gray in IE. I wonder if the real
problem is on the PIL side or the client side. Either way, I need PIL to
satisfy the client, no matter how broken the client may be.
Also, simply opening a transparent GIF, Drawing on it and saving it
results in seemingly random colors placed in the transparent space.
Does PIL support transparent images? Can someone provide a tested
example?
Platform: RH6.2, python 2.0, PIL 1.1.1 (Win32 will also be a target
eventually)
Thanks in advance,
- Scott