Smalltalk › Cincom › VisualWorks

Retina or not ?

_‹ Previous Topic Next Topic _›

Classic

List

Threaded

5 messages Options

Michel Bany

Retina or not ?

Dear friends,

Does anybody know what I should write to determine programmatically if my Macbook Pro is retina or not ?
I am using 8.0.1.

Thanks in advance,
Michel

_______________________________________________
vwnc mailing list
[hidden email]
http://lists.cs.uiuc.edu/mailman/listinfo/vwnc

Maarten Mostert

Re: Retina or not ?

I use the ioreg command to extract the mac's serial number but in your case doing something like might help

ExternalProcess new
shOne: 'ioreg -lw0 | grep \"EDID\" | sed "/[^<]*</s///" | xxd -p -r | strings -6'.

gives: 'LTN154BT08
Color LCD
4C31500ABAFNA'

on my non retina macbook.

It is to suppose to give you a string with LP if you have retina display.

http://apple.stackexchange.com/questions/61087/what-terminal-command-shows-the-type-of-display-that-i-have-on-my-macbook-pro

@+Maarten,

> "Michel Bany" <[hidden email]> |

> Dear friends,

>
> Does anybody know what I should write to determine programmatically if my Macbook
> Pro is retina or not ?
> I am using 8.0.1.
>
> Thanks in advance,
> Michel
>
>
> _______________________________________________
> vwnc mailing list
> [hidden email]
> http://lists.cs.uiuc.edu/mailman/listinfo/vwnc
>

_______________________________________________
vwnc mailing list
[hidden email]
http://lists.cs.uiuc.edu/mailman/listinfo/vwnc

Antony Blakey-5

Re: Retina or not ?

In reply to this post by Michel Bany

You probably shouldn't test your machine, but instead you should test a particular NSScreen. One machine can host simultaneous screens, each of which may have different backing scales. NSWindows can span screens, so the situation is a lot more subtle than you might hope.

https://developer.apple.com/library/mac/documentation/GraphicsAnimation/Conceptual/HighResolutionOSX/APIs/APIs.html

> On 28 Jun 2015, at 18:49, Michel Bany <[hidden email]> wrote:
>
> Dear friends,
>
> Does anybody know what I should write to determine programmatically if my Macbook Pro is retina or not ?
> I am using 8.0.1.
>
> Thanks in advance,
> Michel
>
>
> _______________________________________________
> vwnc mailing list
> [hidden email]
> http://lists.cs.uiuc.edu/mailman/listinfo/vwnc

Antony Blakey
--------------------------
Ph: +61 438 840 787

Borrow money from pessimists - they don't expect it back.
-- Steven Wright

_______________________________________________
vwnc mailing list
[hidden email]
http://lists.cs.uiuc.edu/mailman/listinfo/vwnc

Michel Bany

Re: Retina or not ?

In reply to this post by Maarten Mostert

Thanks Maarten, your trick is working for me.

Sent from my red iPhone 6S plus

On Sun, Jun 28, 2015 at 12:07 PM, <[hidden email]> wrote:

I use the ioreg command to extract the mac's serial number but in your case doing something like might help

ExternalProcess new
shOne: 'ioreg -lw0 | grep \"EDID\" | sed "/[^<]*</s///" | xxd -p -r | strings -6'.

gives: 'LTN154BT08
Color LCD
4C31500ABAFNA'

on my non retina macbook.

It is to suppose to give you a string with LP if you have retina display.

http://apple.stackexchange.com/questions/61087/what-terminal-command-shows-the-type-of-display-that-i-have-on-my-macbook-pro

@+Maarten,

> "Michel Bany" <[hidden email]> |

> Dear friends,
>
> Does anybody know what I should write to determine programmatically if my Macbook
> Pro is retina or not ?
> I am using 8.0.1.
>
> Thanks in advance,
> Michel
>
>
> _______________________________________________
> vwnc mailing list
> [hidden email]
> http://lists.cs.uiuc.edu/mailman/listinfo/vwnc
>

_______________________________________________
vwnc mailing list
[hidden email]
http://lists.cs.uiuc.edu/mailman/listinfo/vwnc

Steven Kelly

Re: Retina or not ?

In reply to this post by Antony Blakey-5

Re: [vwnc] Retina or not ?

Yep, it's a mess :). Interestingly, for some purposes it is better to test the whole system, rather than a particular screen. Our case was finding out whether Retina / HiDPI was in use, in which case we needed different code to avoid VW's bugs* in handling Retina / HiDPI. Even if only one screen was Retina, the bugs occurred on all screens.

All the best,

Steve

* The bug is seen as double-scaling of bitmaps calculated or cached via Pixmaps, because VW incorrectly scales bitmaps even when displaying them to an off-screen Pixmap. It shows up most clearly in the rounded ends of buttons and scrollbars in the old Mac OS X look.

From: [hidden email] on behalf of Antony Blakey
Sent: Sun 28/06/2015 13:50
To: Michel Bany
Cc: VisualWorks mailing list list
Subject: Re: [vwnc] Retina or not ?

_______________________________________________
vwnc mailing list
[hidden email]
http://lists.cs.uiuc.edu/mailman/listinfo/vwnc