195801 - Fix wxWin/gecko redraw problems

Status: RESOLVED INCOMPLETE

(Core Graveyard :: Embedding: Mac, defect)

Description

[Conrad Carlen (not reading bugmail)]

There are redraw problems which happen when embedding Gecko into a wxWindows app
that do not happen when embedding into a PowerPlant app. PowerPlant does a save
and restore of the graphic state around the drawing of each pane, while
wxWindows does not. Gecko's redraw code may be leaving some things in a bad
state which PowerPlant happens to clean up for it.

Comment 1

[Simon Fraser [no longer active]]

One of the issues here is that Gecko can clobber the clip region while
processing PLEvents, which happens via Caron Events (and thus at
hard-to-determine times). We make nsIRenderingContexts for reflow, and they
don't/can't cleanup after themselves.

I also found that wxWin is paranoid to the point of rabidity about
saving/restoring the clip region, meaning that it will happily save/restore an
empty clip for evermore.

Comment 2

[Benjamin Smedberg]

Mass change of bugs in the Embedding: Mac component in preparation for archiving it. I don't believe any of these are useful any more, as we don't have a mac embedding API. If they are relevant, they should be moved to an alternate component.