[cairo] XCopyArea and Cairo - trying to implement scrolling
billingt at AI.SRI.COM
Thu May 14 20:34:00 PDT 2015
I'm trying to translate a backend from using Xlib calls to using Cairo,
where reasonable. The drawing operations I'm doing (text and graphics)
are ignoring the xlib gcontext, and instead using the cairo context.
However, when I try to use my cairo implementation of an xcopyarea-like
function, I get some kind of event generated which I don't know how to
handle. If I try to use xcopyarea (the xlib implementation), it "works"
except that the background is always black, not the background it ought
I can go into more specifics, but I'm just wondering if there's any
standard way of doing this. I found an archived discussion from many
years ago about this subject, but I can't tell if there were
patches/reimplementations done to better accommodate this nor if there's
a standard approach.
Thanks for any light you can shed ...
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