GNU bug report logs - #30699
26.0.91; buffer contents flicker on macOS frames when frames are resized

Previous Next

Full log

View this message in rfc822 format

From: Alan Third <alan <at> idiocy.org>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 30699 <at> debbugs.gnu.org, aaronjensen <at> gmail.com
Subject: bug#30699: 26.0.91; buffer contents flicker on macOS frames when frames are resized
Date: Tue, 13 Mar 2018 12:19:04 +0000

On Mon, Mar 12, 2018 at 11:42:39PM +0000, Alan Third wrote:
> So would it be acceptable to just call redisplay after the resize?
> 
> modified   src/nsterm.m
> @@ -7007,6 +7007,7 @@ - (void) updateFrameSize: (BOOL) delay
>           to be a noop.  (bug#28872) */
>        wr = NSMakeRect (0, 0, neww, newh);
>        [view setFrame: wr];
> +      redisplay ();
>  
>        // to do: consider using [NSNotificationCenter postNotificationName:].
>        [self windowDidMove: // Update top/left.

Nah, forget it. I tried it and found an easily reproducible crash.

I think the only solution left is to take a copy of the contents of
the frame, resize, then copy the contents back. I don’t know how to do
that and a quick google search reveals nothing helpful.

Apple assume you’ll always be able to redraw the contents of the
window on resize, afaict, so they don’t provide any way of retaining
the pre‐resize contents.
-- 
Alan Third

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.