Re: FigureCanvasWxAgg not redrawn with wxpython 4.0.1 on Ubuntu 17.10

On Fri, Feb 9, 2018 at 12:21 PM, Dietmar Schwertberger <
[email protected]> wrote:

> I would guess that Robin will comment on the issue. If it's made
> 'official' that PaintDC is  deprecated due to these problems, then I will
> have a look and fix the Matplotlib wx backends. It's not only Wayland but
> also Mac OS that has minor problems.
>

Last I looked, the wxAgg backend needed some love. There were a LOT of
"extra" drawing/blitting, whatever calls in there. Presumably, each one was
added to address an issue (maybe each platform required different hacks...)
and in the end, extra drawing calls are better than it not working under
some situations....

But the point is that it would be really nice to modernize the wx backend
-- so if you have some time to look, please do!

Also, a new maintainer of the wx back-end was just added to the MPL team,
so be sure to reach out and see if this is already being worked on -- and
offer your help?

Final note: also list I found (pre-Phoenix), that despite PaintDC rather
than ClientDC being the "right" way to do it -- particularly on OS-X,  I
could not get immediate drawing without a ClientDC -- i.e. some drawing
following mouse movement. Hopefully that works better now.

-CHB


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