[Image-SIG] Simple Question: Adding an alpha layer?
Wed, 30 Apr 2003 16:47:34 -0700
I have my new "WalImagePlugin.py" which load the WAL file with a
But one of the flags in the header can set the transparency of the
image to either 33% or 66%.
So my newbie question is: give a new Image with mode "P", what is the
best way to add a uniform alpha transparency of either 171 (which is 255
* 67% = 170.85) or else 87 (which is 255 * 34% = 86.7)?
It seems like the thing to do is convert self.palette from "RGB" mode
to "RGBA", and then somehow add the alpha data. I see "putalpha(band)"
but I don't know what a "band" is.