[Cuis-dev] Managing Cuis on Normal & "Retina" displays

[Ignacio Sniechowski]

Hi Juan.
Starting my job here. From what I've been researching in Pharo it seems
that SDL2 is used.
There's a process running
OSSDL2Driver >> eventLoopProcessWithoutPlugin
   | event session |
    event := SDL_Event new.
    session := Smalltalk session.

    [ session == Smalltalk session]
    whileTrue: [
    [ (SDL2 pollEvent: event) > 0 ]
    whileTrue: [ self processEvent: event ].

    (Delay forMilliseconds: 5) wait ]


And also there's a class OSSDL2BackendWindows with a method
fetchDPI
That seems to adjust the scale factor. So evidence seems to point that they
are using fake resolution.
I will check with Squeak
*Ignacio Sniechowski*



















On Wed, Mar 1, 2023 at 9:48 AM Juan Vuletich <juan at cuis.st> wrote:

> Hi Nacho,
>
> This is a great opportunity for you to help Cuis!
>
> - Is Pharo aware of the true pixel resolution both in Retina and External
> displays?
> - Is Pharo aware of the true pixel pitch both in Retina and External
> displays?
>
> Answering these questions may take a little time of researching the
> system. Would you do it for us?
>
> If the answer to both is YES, then we really need to learn how they do it
> and try to do the same in Cuis.
>
> If the answer is NO, maybe they are running at fake pixel resolution and
> fake pixel pitch. Then, using the Mac zoom you could check that a Pharo
> pixel doesn't correspond to a physical display pixel. If this is the case,
> then the solution is not interesting, because running at true pixel
> resolution is crucial to good visual quality.
>
> Thanks!
>
> On 3/1/2023 8:20 AM, Ignacio Sniechowski via Cuis-dev wrote:
>
> Hi Juan!
> Thanks for your prompt reply
> Yes, I mean Pharo. Didn't try Squeak. At least using Pharo 10 on a mac and
> moving the window from the internal screen to the external monitor adapts
> automatically...
> Cheers!
>
>
> *Ignacio Sniechowski*
>
> On Wed, Mar 1, 2023 at 8:15 AM Juan Vuletich <juan at cuis.st> wrote:
>
>> Hi Nacho,
>>
>> The VM doesn't tell the image about pixel pitch. It would be nice if Cuis
>> could automatically adapt to it.
>>
>> When you say "as other open-source Smalltalk do", do you mean that Squeak
>> or Pharo know the actual pixel pitch?
>>
>> Thanks,
>>
>> On 3/1/2023 7:57 AM, Ignacio Sniechowski via Cuis-dev wrote:
>>
>> Hi!
>> Hope everyone is okay.
>> This is a question for those who have displays (or notebooks) with
>> "retina" like displays.
>> How do you manage the size of the GUI elements and fonts?
>> If I set Cuis to work correctly on an external, full HD monitor, then
>> when using the internal display of my mac, everything is enormous, and
>> vice-versa.
>> It is a VM-related issue or some configuration that I have to do on Cuis.
>> But either the VM or Cuis is unaware (as other open-source Smalltalk do)
>> of which kind of display one uses.
>> Thanks!
>> Cheers
>> Nacho
>>
>> *Ignacio Sniechowski*
>>
>>
>> --
>> Juan Vuletichcuis.stgithub.com/jvuletichresearchgate.net/profile/Juan-Vuletichindependent.academia.edu/JuanVuletichpatents.justia.com/inventor/juan-manuel-vuletichlinkedin.com/in/juan-vuletich-75611b3twitter.com/JuanVuletich
>>
>>
>
> --
> Juan Vuletichcuis.stgithub.com/jvuletichresearchgate.net/profile/Juan-Vuletichindependent.academia.edu/JuanVuletichpatents.justia.com/inventor/juan-manuel-vuletichlinkedin.com/in/juan-vuletich-75611b3twitter.com/JuanVuletich
>
>
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