bug#2531: NS: excessive redisplay

bug#2531: NS: excessive redisplay

[David Reitter]

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The new NS port still shows excessive redrawing while resizing frames  
(with the mouse); the window contents are drawn about one line too  
low  before they are redrawn again in the right spot.  This animation  
takes place every-time the mouse cursor is moved a bit, so we're going  
to a lot of animations while a frame is being resized.

Enabling the tool bar leads to a minor extra redisplay, slightly below  
the target position.

Maximizing a frame leads to multiple extra redisplays, at first with  
all elements (e.g., mode-line) in their old locations before the frame  
is cleared and redrawn.



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bug#2531: NS: excessive redisplay

[Adrian Robert]

I checked in a small change to EmacsView-drawRect: that eliminates  
some of the off-target redisplays at least.  At least some behavior  
must be different under Tiger and Leopard, as on Tiger no redisplay  
gets triggered during resize unless the window is dragged a full grid  
increment.

bug#2531: NS: excessive redisplay

[David Reitter]

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On 6 Mar 2009, at 10:00, Adrian Robert wrote:

> I checked in a small change to EmacsView-drawRect: that eliminates  
> some of the off-target redisplays at least.  At least some behavior  
> must be different under Tiger and Leopard, as on Tiger no redisplay  
> gets triggered during resize unless the window is dragged a full  
> grid increment.

Ah, good, thanks, ignore part of my earlier e-mail then.

- D


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bug#2531: NS: excessive redisplay

[Alan J Third]

Adrian Robert <adrian.b.robert@gmail.com> writes:

> I checked in a small change to EmacsView-drawRect: that eliminates
> some of the off-target redisplays at least.  At least some behavior
> must be different under Tiger and Leopard, as on Tiger no redisplay
> gets triggered during resize unless the window is dragged a full grid
> increment.

I can't reproduce any slow redisplaying on Emacs 24.5 or 25.1 under El
Capitan, in fact it just doesn't redisplay at all until I let go of the
mouse button. I guess this means either this patch, or some subsequent
work, fixed this bug, so I'll close this as fixed.
-- 
Alan Third

bug#2531: NS: excessive redisplay

[Adrian Robert]

I could never reproduce this and no one else was able to fix it, so this feature was removed.  The bug can be closed.



On 2016.1.11, at 01:16, Alan J Third <alan@idiocy.org> wrote:

> Adrian Robert <adrian.b.robert@gmail.com> writes:
> 
>> I checked in a small change to EmacsView-drawRect: that eliminates
>> some of the off-target redisplays at least.  At least some behavior
>> must be different under Tiger and Leopard, as on Tiger no redisplay
>> gets triggered during resize unless the window is dragged a full grid
>> increment.
> 
> I can't reproduce any slow redisplaying on Emacs 24.5 or 25.1 under El
> Capitan, in fact it just doesn't redisplay at all until I let go of the
> mouse button. I guess this means either this patch, or some subsequent
> work, fixed this bug, so I'll close this as fixed.
> -- 
> Alan Third