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Re: Browser zooming sufficient for WCAG 1.4.4 (resize text)

for

From: Laurent Bracquart
Date: Jun 8, 2015 2:16AM

Hi listers,


I believe several factors are in play here:

1. The way breakpoints are set (px vs. em/rem/%).
2. The type of zoom used (full page zoom vs. zoom text only).

From my tests, with Firefox 38:

* em breakpoints + full page zoom: can trigger the breakpoints.
* em breakpoints + zoom text only: can trigger the breakpoints.
* px breakpoints + full page zoom: can trigger the breakpoints.
* px breakpoints + zoom text only: can't trigger the breakpoints.


Best,

--

Laurent Bracquart
<EMAIL REMOVED>

Tél. 01 45 26 77 89

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Le 08/06/2015 10:01, _mallory a écrit :
> On Sun, Jun 07, 2015 at 03:40:56PM +0100, Patrick H. Lauke wrote:
>> On 07/06/2015 13:35, Karl Groves wrote:
>>> Whitney,
>>>
>>> That's due to the move toward rem units. When a site is built using
>>> rem units the breakpoints can be triggered when the page is zoomed.
>> Actually, nothing to do with rem units. When zooming in desktop
>> browsers, the internal representation of the viewport changes
>> accordingly (so say an 800px wide window zoomed to 200% has an
>> effective viewport of 400px), so triggers different @media viewport
>> sizes. Unless I'm misunderstanding the original question...
> I first saw this in opera (presto), before rem existed. But I don't believe I
> see it in all browsers today.
>
> _mallory
> > > >