Re: Drawing issue with translucent borderless NSWindow, initial content half stays
Re: Drawing issue with translucent borderless NSWindow, initial content half stays
- Subject: Re: Drawing issue with translucent borderless NSWindow, initial content half stays
- From: Sean McBride <email@hidden>
- Date: Wed, 07 Sep 2016 11:37:10 -0400
- Organization: Rogue Research Inc.
On Tue, 30 Aug 2016 21:03:20 -0500, Ken Thomases said:
>On Aug 30, 2016, at 10:10 AM, Sean McBride <email@hidden> wrote:
>>
>> I have a drawing bug in my app, and reduced it to a toy app.
>Basically, I create an NSBorderlessWindowMask type window who's content
>view draws a translucent rounded rect. Its only subview is an
>NSTextField that draws a number in a big font. When I display the
>window, all is well. But when I change the textfield text, or even
>simply remove the textfield, its old string half remains in a ghostly
>outline. This works in 10.9 and 10.10, but is buggy in 10.11 and
>10.12. I figure it's an OS bug, but maybe the description rings any
>bells for anyone?
>
>Does the window have a shadow? Are you invalidating the shadow whenever
>the content gets redrawn (since the shadow of a partially-transparent
>window depend on exactly what was drawn non-transparently)?
Ken,
That was exactly it, thanks! A call to invalidateShadow did it!
Cheers,
--
____________________________________________________________
Sean McBride, B. Eng email@hidden
Rogue Research www.rogue-research.com
Mac Software Developer Montréal, Québec, Canada
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