W3C home > Mailing lists > Public > w3c-wai-ig@w3.org > April to June 2017

Re: Resize text: how to ensure success criteria WCAG 1.4.4

From: Wendy Chisholm <chisholm.wendy@gmail.com>
Date: Wed, 24 May 2017 17:24:38 +0000
Message-ID: <CACf82Nevo8eV=xceEhzQ=yo2C-w5J3B8iOzojm=O3NbGEBypYg@mail.gmail.com>
To: Kiran Gundiyal <kiranph@gmail.com>, Phill Jenkins <pjenkins@us.ibm.com>
Cc: Gregg C Vanderheiden <greggvan@umd.edu>, Herin Hentry <herinhentry@gmail.com>, IG - WAI Interest Group List list <w3c-wai-ig@w3.org>, Mitchell Evan <mtchllvn@gmail.com>, "Patrick H. Lauke" <redux@splintered.co.uk>
We've also seen this fail on one screen size/resolution combination but
pass on another combination. We're investigating what our test criteria
should be. I asked the community (via Facebook and Twitter) what screen
sizes, resolutions and zoom levels people are using. The most interesting
insight that I hadn't realized before is that several respondents use a
system zoom coupled with a browser zoom.

On Wed, May 24, 2017 at 8:15 AM Phill Jenkins <pjenkins@us.ibm.com> wrote:

> Please remember that although there are two failures listed in the WCAG
> techniques, those two are not the ONLY two failures that could occur, just
> the first two that have reached consensus as valid failures and published:
>
>
> WCAG explicitly says there are 2 failures related to this success
> criteria. We need to make sure these are not the barriers.
>
>    - *F69: Failure of Success Criterion 1.4.4 when resizing visually
>    rendered text up to 200 percent causes the text, image or controls to be
>    clipped, truncated or obscured*
>    <http://www.w3.org/TR/2016/NOTE-WCAG20-TECHS-20161007/F69>
>    - *F80: Failure of Success Criterion 1.4.4 when text-based form
>    controls do not resize when visually rendered text is resized up to 200%*
>    <http://www.w3.org/TR/2016/NOTE-WCAG20-TECHS-20161007/F80>
>    -
>
> For example,
> I've logged failures against functionality for
> *        1.4.4 Resize text:* . . .
> <https://www.w3.org/TR/2008/REC-WCAG20-20081211/#captionsdef>
> <https://www.w3.org/TR/2008/REC-WCAG20-20081211/#images-of-textdef>text
> <https://www.w3.org/TR/2008/REC-WCAG20-20081211/#textdef> can be resized
> without assistive technology
> <https://www.w3.org/TR/2008/REC-WCAG20-20081211/#atdef> up to 200 percent
> without loss of content or functionality. (Level AA)
> because the keyboard operability functionality that was working before the
> 200%, but failed to continue work after when the page dynamically loaded a
> new responsive design that did not include the proper keyboard operability
> for some of its new responsive widgets.  The user could no longer check the
> checkbox, the visual focus indicator was removed, the focus order was
> incorrect, and there was no longer a way with the keyboard to even activate
> the widget like one could with a mouse click.
>
> I bring up these valid functional issue becasue F69 and F80 seem limited
> to "visual" issues only, while the success criteria specifially mentions
> "functionality".
>
> Perhaps I or someone should submit more candidate "Failure of Success
> Criteria 1.4.4" for review and consensus.
>  ___________
> Regards,
> Phill Jenkins
> pjenkins@us.ibm.com
> Senior Engineer & Accessibility Executive
> IBM Research Accessibility
> linkedin.com/in/philljenkins/ <https://www.linkedin.com/in/philljenkins/>
> ibm.com/able <http://www.ibm.com/able>
> facebook.com/IBMAccessibility <http://www.facebook.com/IBMAccessibility>
> <http://ageandability.com/>twitter.com/IBMAccess
> ageandability.com
>
>
>
> From:        Kiran Gundiyal <kiranph@gmail.com>
> To:        Gregg C Vanderheiden <greggvan@umd.edu>
> Cc:        Mitchell Evan <mtchllvn@gmail.com>, Herin Hentry <
> herinhentry@gmail.com>, "Patrick H. Lauke" <redux@splintered.co.uk>, IG -
> WAI Interest Group List list <w3c-wai-ig@w3.org>
> Date:        05/24/2017 09:25 AM
> Subject:        Re: Resize text: how to ensure success criteria WCAG 1.4.4
>
>
>
> Thank you all your comments and clarification. appreciated !
>
> Sent from my iPhone
>
> On May 23, 2017, at 9:34 PM, Gregg C Vanderheiden <*greggvan@umd.edu*
> <greggvan@umd.edu>> wrote:
>
> ah very good point Mitchell
>
> I answered what is REQUIRED
>
> but there is so much more that is GOOD PRACTICE,    REALLY HELPFUL to
> some,   and ESSENTIAL to others  that is beyond the SC requirements.
>
>
> *g*
>
> Gregg C Vanderheiden
> *greggvan@umd.edu* <greggvan@umd.edu>
>
>
>
>
> On May 23, 2017, at 9:38 PM, Mitchell Evan <*mtchllvn@gmail.com*
> <mtchllvn@gmail.com>> wrote:
>
> Kiran,
>
> Gregg V's concise answer is correct, for this specific question: "What are
> the requirements to pass WCAG 2.0 1.4.4?"
>
> Additional factors are also important for a good user experience. Which of
> these are the most important? That depends on your content, which users you
> ask, what device and software they're using, and which accessibility expert
> is most persuasive.
>
> - Avoid horizontal scrolling
>
> - Work well both with full zoom and with text-only enlargement (not just
> one or the other)
>
> - Make the content look good (not just avoiding "clipped, truncated or
> obscured")
>
> - Support enlargement beyond 200%
>
> Mobile-responsive designs (RWD) often satisfy 1.4.4 and beyond, as long as
> the design doesn't omit content at the smaller breakpoints.
>
> Mitchell Evan
>
> @mitchellrevan
>
>
> On Wed, May 17, 2017, 6:01 PM Herin Hentry <*herinhentry@gmail.com*
> <herinhentry@gmail.com>> wrote:
> Hi Kiran,
>
> WCAG explicitly says there are 2 failures related to this success
> criteria. We need to make sure these are not the barriers.
>
>    - *F69: Failure of Success Criterion 1.4.4 when resizing visually
>    rendered text up to 200 percent causes the text, image or controls to be
>    clipped, truncated or obscured*
>    <http://www.w3.org/TR/2016/NOTE-WCAG20-TECHS-20161007/F69>
>    - *F80: Failure of Success Criterion 1.4.4 when text-based form
>    controls do not resize when visually rendered text is resized up to 200%*
>    <http://www.w3.org/TR/2016/NOTE-WCAG20-TECHS-20161007/F80>
>
> Testing Resize Text with IE:
>
> 1)     From the IE Menu, select View > Text Size > Largest
>
> 2)     Check if all the text, input controls and containers have resized
>
> 3)     Make sure there is no major overlap and the display is not obscured
>
> 4)     Make sure there is no content trimming
>
>
>
> Testing Resize Text with Chrome
> Chrome browser > Settings > Show Advanced Settings > Web content
> Click on Customize fonts. This opens the Fonts Dialog. The standard font
> size is 16. As per WCAG, we need to increase the font size to 200% and make
> sure the functionality is not broken and the containers also resize. Change
> the Standard font to 32 (200% of 16). Check if the container resizes and
> the content is not trimmed.
>
> The issue with Ctrl ++ (zoom) is it adds horizontal scroll bars to the
> pages at 200%.
> As per WCAG 1.4.4 Resize Text :*The author's responsibility is to create
> Web content that does not prevent the user agent from scaling the content
> effectively.*
> *Thanks and Regards,*
> *Herin*
>
>
> On Thu, May 18, 2017 at 9:27 AM, Patrick H. Lauke <
> *redux@splintered.co.uk* <redux@splintered.co.uk>> wrote:
> On 17/05/2017 23:43, Userite wrote:
> [...]
> If you only check with one particular assistive tool for Zooming
>
> note that WCAG 2 explicitly says "text can be resized without assistive
> technology", so only the zoom functionality built into the user agent can
> be used to test this.
>
> P
> --
> Patrick H. Lauke
>
> *www.splintered.co.uk* <http://www.splintered.co.uk/>|
> *https://github.com/patrickhlauke* <https://github.com/patrickhlauke>
> *http://flickr.com/photos/redux/* <http://flickr.com/photos/redux/>|
> *http://redux.deviantart.com* <http://redux.deviantart.com/>
> twitter: @patrick_h_lauke | skype: patrick_h_lauke
>
>
> --
>
> Mitchell Evan
> *mtchllvn@gmail.com* <mtchllvn@gmail.com>
> +1 (510) 375-6104
>
>
> --
Wendy Chisholm
Universal Design Evangelist
http://sp1ral.com/about/
twitter: wendyabc
Received on Wednesday, 24 May 2017 17:25:25 UTC

This archive was generated by hypermail 2.3.1 : Wednesday, 24 May 2017 17:25:26 UTC