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Re: Testing 1.4.4 Resize and 1.4.10 Reflow

for

From: Patrick H. Lauke
Date: Apr 19, 2023 5:40AM

> The issue of the scale percentage (in system display settings) is
interesting because
> have not seen that discussed previously, yet it is relevant to many
people who work
> on laptops. All my machines are set to 100% so it's not an issue for
me, but I am
> aware that 125% or 150% are common default settings for physically
small displays
> with high resolution. My view is that they must be set to 100% for
testing purposes.

Just on that point, note that changing the scale percentage also changes
the effective resolution itself. So if you use, say, display resolution
of 1280x1024 but scale set to 150%, your actual resolution (and the CSS
pixels in the browser window that's maximised - leaving browser chrome
aside for simplicity) is approximately 853x682

P
--
Patrick H. Lauke

https://www.splintered.co.uk/ / https://github.com/patrickhlauke /
https://codepen.io/patrickhlauke
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https://mastodon.social/@patrick_h_lauke


------ Original Message ------
From "Steve Green" < <EMAIL REMOVED> >
To "Patrick H. Lauke" < <EMAIL REMOVED> >; "WebAIM Discussion List"
< <EMAIL REMOVED> >
Date 19/04/2023 11:50:01
Subject RE: [WebAIM] [EXTERNAL] Testing 1.4.4 Resize and 1.4.10 Reflow

>For SC 1.4.10, the resolution is not "defined as 1280 and 1024". It is defined as either 1280 CSS pixels wide or 1024 CSS pixels high at 400% zoom, depending on whether the content is designed to scroll vertically or horizontally. The other dimension is not specified in either case.
>
>I don't think that testing SC 1.4.10 at 100% zoom in a 320px wide window is valid because the Understanding page refers to "the goal of allowing people to zoom in to 400%." And there are numerous other references to 400% zoom.
>
>The issue of the scale percentage (in system display settings) is interesting because I have not seen that discussed previously, yet it is relevant to many people who work on laptops. All my machines are set to 100% so it's not an issue for me, but I am aware that 125% or 150% are common default settings for physically small displays with high resolution. My view is that they must be set to 100% for testing purposes.
>
>Steve Green
>Managing Director
>Test Partners Ltd
>
>
>