RE: Resize Text (1.4.4)

Hi all,

 

IMO, I think that If you relief in a browser with zoom you can’t test this
adequately. 

[cite:
http://www.w3.org/TR/UNDERSTANDING-WCAG20/visual-audio-contrast-scale.html]

The author cannot rely on the user agent to satisfy this Success Criterion
for HTML content if users do not have access to a user agent with zoom
support. For example, if they work in a environment that requires them to
use IE 6 or Firefox.

 

… If the user agent doesn't provide zoom functionality but does let the user
change the text size, the author is responsible for ensuring that the
content remains usable when the text is resized.

 

… Content satisfies the Success Criterion if it can be scaled up to 200%,
that is, up to twice the width and height.

[end cite]

 

Perhaps the confusion about the test is because the 2# speaks of "zoom" when
it should speak about "resize".

 

[cite: ]

Procedure

1.	Display content in a user agent
2.	Zoom content to 200%
3.	Check whether all content and functionality is available 

[end cite]

 

So to check this point, I think it is worth to use the settings of browsers
that provide the effect of zoom. What you should do is use the scaling of
the text (And check that there are no such elements as defined in fixed
units of measurement.)

 

The reason is that the zoom effect can be generated on containers and text
that are defined in fixed units of measurement. In contrast scaling only
works on elements that are defined in relative units of measurement.

 

Maybe I'm wrong, but I think the point is mainly to review the authors have
defined the correct text and container sizes of text, just so they can be
well resized.

 

Regards,

Emmanuelle

 

~~~~~~~~~~~~~~~~~~~~

Emmanuelle Gutiérrez y Restrepo

Directora de la Fundación Sidar

Coordinadora del Seminario SIDAR

www.sidar.org

email: coordina@sidar.org / emmanuelle@sidar.org

 

 

 

De: w3c-wai-ig-request@w3.org [mailto:w3c-wai-ig-request@w3.org] En nombre
de W Reagan
Enviado el: jueves, 06 de agosto de 2009 18:38
Para: w3c-wai-ig@w3.org; Christophe Strobbe
CC: Andrew Kirkpatrick; Charles McCathieNevile
Asunto: RE: Resize Text (1.4.4)

 


It worked. The bug was in the higher version of Opera (9.6.4). Thanks Opera
for giving me the link to version 9. 

 

Thanks.

 

Now I know I passed. It was also good timing because when I visited the
Opera site today, it mentioned a beta version of 10. This could have caused
a failure.

 

 

--- On Thu, 8/6/09, Christophe Strobbe <christophe.strobbe@esat.kuleuven.be>
wrote:


From: Christophe Strobbe <christophe.strobbe@esat.kuleuven.be>
Subject: RE: Resize Text (1.4.4)
To: w3c-wai-ig@w3.org
Date: Thursday, August 6, 2009, 4:14 PM

Hi,

At 17:15 6/08/2009, W Reagan wrote:
>The test at 
><http://www.w3.org/TR/2008/NOTE-WCAG20-TECHS-20081211/G142>http://www.w3.or
g/TR/2008/NOTE-WCAG20-TECHS-20081211/G142 
>is to determine if the browser supports the website up to 200%
>
>Procedue:
>1. Display content in a user agent
>2. Zoom content up to 200%
>3. Check whether all content and functionality is available.
>
>
>Internet Explorer 7 and Opera 9 provide a zoom function that scales 
>HTML/CSS page content uniformly.
>
>This is why I troubleshooted my document with Opera. As I mentioned 
>before, the only version avaliable for Opera is 9.6.4. Statement # 3 
>is true in Opera, but only up to 150%,

Do you really mean that at a zoom level higher than 150% there are 
overlaps or other problems that obscure text and/or make 
functionality unusable? (Note that the guidelines do not require 
uniform zooming.)

With regard to Firefox: it does not allow you to see the zoom level 
(unlike SeaMonkey) but there are a few add-ons that support this, for 
example the Firefox Accessibility Extension:
<http://firefox.cita.uiuc.edu/>.

Best regards,

Christophe


>Statement #3 is true in Internet Explorer 7 up to 200%. Do I pass or 
>fail resize text, or disregard the Opera test and use another test?
>
>
>--- On Thu, 8/6/09, Andrew Kirkpatrick <akirkpat@adobe.com
<http://us.mc1116.mail.yahoo.com/mc/compose?to=akirkpat@adobe.com> > wrote:
>
>From: Andrew Kirkpatrick <akirkpat@adobe..com
<http://us.mc1116.mail.yahoo.com/mc/compose?to=akirkpat@adobe.com> >
>Subject: RE: Resize Text (1.4.4)
>To: "Charles McCathieNevile" <chaals@opera.com
<http://us.mc1116.mail.yahoo.com/mc/compose?to=chaals@opera.com> >, "W
Reagan" 
><wreagan1@yahoo.com
<http://us.mc1116.mail.yahoo.com/mc/compose?to=wreagan1@yahoo.com> >,
"w3c-wai-ig@w3..org
<http://us.mc1116.mail.yahoo.com/mc/compose?to=w3c-wai-ig@w3..org> "
<w3c-wai-ig@w3..org
<http://us.mc1116.mail.yahoo.com/mc/compose?to=w3c-wai-ig@w3.org> >
>Date: Thursday, August 6, 2009, 1:56 PM
>
>Opera will zoom the page up to 1000%, whatever you did. Internet explorer
>will let you change text sizes to a few different sizes, if you use the
>right units for text size.
>
>Hi Chaals - IE7 has the same type of zoom functionality that Opera 
>has, as well as the view menu text size option that we all have 
>grappled with selecting the right units to work with.
>
>AWK
>

-- 
Christophe Strobbe
K.U.Leuven - Dept. of Electrical Engineering - SCD
Research Group on Document Architectures
Kasteelpark Arenberg 10 bus 2442
B-3001 Leuven-Heverlee
BELGIUM
tel: +32 16 32 85 51
http://www.docarch.be/
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