Re: High-res Customize icons

[Yuan Fu]

> On Apr 23, 2020, at 3:40 PM, Eli Zaretskii <address@hidden> wrote:
> 
>> From: Yuan Fu <address@hidden>
>> Date: Thu, 23 Apr 2020 15:35:19 -0400
>> Cc: Werner LEMBERG <address@hidden>,
>> Juri Linkov <address@hidden>,
>> Yuri Khan <address@hidden>,
>> Clément Pit-Claudel <address@hidden>,
>> address@hidden,
>> address@hidden
>> 
>> Apart from the font vs image discussion, what about the idea to add @2x 
>> images support to Emacs?
>> WDYT? Basically, we add address@hidden images along side the existing 
>> name.xpm images. And find-image
>> would prefer those @2x images if, say, image-prefer-hidpi is non-nil.
> 
> I don't think I understand what is meant by @2x images, but the
> general idea of preferring certain variants of images given some
> aspect of the environment is sound.

On HiDPI monitors you can essentially display 200x200 pixels on the same area 
where normal monitors can display 100x100 pixels, hence the @2x. Application 
icons nowadays normally comes with @2x and @3x variants. So a 32x32 icon also 
comes with 64x64 and 96x96 size. At least that’s how is goes for iOS and macOS 
apps. 

Yuan