Re: Resizing gui Emacs on macosx/Lion

[Jan Djärv]

Hello.

chad skrev 2011-09-15 23:27:
> Has anyone else noticed this?

Yes.

> The latest macosx introduced some changes in the underlying graphical
> toolkit, including replacing the bottom-right `resize handle' with the
> ability to resize from any edge. In Emacs (Emacs.app, bzr head), if
> the vertical size is adjusted using this resize mechanism, the window
> position changes.  If the window is made taller from the top, the
> final position ends up under the cursor, so the result is simply some
> distracting `flex' as the resize adjusts in line-sized increments. If
> the window is made smaller from the bottom, the window seems to
> flicker entirely off the screen, but then back onto the screen.  If
> the window is made larger from the bottom, emacs flickers, ends up
> lower on the display that it started, and can end up entirely off the
> screen.
>
> I'm not filing a bug report yet, because I've scheduled some time to look
> into emacs issues over the weekend, but I thought I'd check and see if
> anyone else has run into this problem.

The problem is in windowDidResize.  Instead of accepting the size given, Emacs 
calls x_set_window_size which in turn tries to resize the frame and all kind 
of things go wrong.  windowDidResize should just calculate rows and cols from 
pixels sizes and call change_frame_size like the X11 ports do.

I imagine it is not too hard to fix, I might get round to it if you don't fix 
it first.

        Jan D.