Right -- looks like I was barking up the wrong herring.

Robby


On Tue, Apr 13, 2021 at 2:00 PM Bruce O'Neel <[email protected]>
wrote:

> Hi,
>
> I think that the label foreground and background colours are ok.
>
> #lang racket
> (require racket/gui/base)
> (define bg (get-label-background-color))
> (define fg (get-label-foreground-color))
>
>
> Produces
>
> > (send bg red)
> 255
> > (send bg green)
> 255
> > (send bg blue)
> 255
> > (send fg red)
> 0
> > (send fg green)
> 0
> > (send fg blue)
> 0
> >
>
> which is bg white, fg black, right?
>
> cheers
>
> bruce
>
>
>
>
> *13 April 2021 20:43 Robby Findler <[email protected]
> <[email protected]>> wrote:*
>
> And I should have added that that function's result is based on a
> luminance computation of this function:
>
>
> https://docs.racket-lang.org/gui/Windowing_Functions.html?q=get-label-background#%28def._%28%28lib._mred%2Fmain..rkt%29._get-label-background-color%29%29
>
> and the foreground one. So if there is some way you're controlling those
> that defeats that computation, that might explain why you're getting the
> bad colors.
>
> Robby
>
>
> On Tue, Apr 13, 2021 at 1:41 PM Robby Findler <[email protected]>
> wrote:
>
>> This looks to me like racket believes the OS is in dark mode but it
>> really isn't. Does this program produce true or false?
>>
>> #lang racket
>> (require mrlib/panel-wob)
>> (white-on-black-panel-scheme?)
>>
>> Robby
>>
>>
>> On Tue, Apr 13, 2021 at 1:38 PM Bruce O'Neel <[email protected]>
>> wrote:
>>
>>> Hi,
>>>
>>> The most recent snapshot version built on Linux x86-64, Arm32, and Arm64
>>> all have funny black blocks in the UI of Dr Racket.
>>>
>>> While this display was captured from a MacOS X11 server it is the same
>>> on the Linux X11 servers as well as directly on the console screen.
>>>
>>> Thanks.
>>>
>>> bruce
>>>
>>> <Screenshot 2021-04-13 at 20.35.22.png>
>>>
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>>>
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