changeset
[css3-animations][css3-transitions] Add warning about dynamic content causing seizures, with link to WCAG.
Mon, 04 Feb 2013 21:51:58 -0700
- author
- L. David Baron <dbaron@dbaron.org>
- date
- Mon, 04 Feb 2013 21:51:58 -0700
- changeset 7313
- 5df9b029337c
- parent 7312
- 4b9457508dcc
- child 7314
- c76aed6e613a
[css3-animations][css3-transitions] Add warning about dynamic content causing seizures, with link to WCAG.
Fixes:
https://www.w3.org/Bugs/Public/show_bug.cgi?id=14669
https://www.w3.org/Style/CSS/Tracker/actions/399
as resolved in:
http://lists.w3.org/Archives/Public/www-style/2011Nov/0712.html
1.1 --- a/css3-animations/Overview.html Mon Feb 04 20:54:56 2013 -0700 1.2 +++ b/css3-animations/Overview.html Mon Feb 04 21:51:58 2013 -0700 1.3 @@ -10,11 +10,11 @@ 1.4 1.5 <meta content="CSS Animations" name=dcterms.title> 1.6 <meta content=text name=dcterms.type> 1.7 - <meta content=2013-01-29 name=dcterms.issued> 1.8 + <meta content=2013-02-04 name=dcterms.issued> 1.9 <meta content="http://dev.w3.org/csswg/css3-animations/" 1.10 name=dcterms.creator> 1.11 <meta content=W3C name=dcterms.publisher> 1.12 - <meta content="http://www.w3.org/TR/2013/ED-css3-animations-20130129/" 1.13 + <meta content="http://www.w3.org/TR/2013/ED-css3-animations-20130204/" 1.14 name=dcterms.identifier> 1.15 <meta content="text/html; charset=utf-8" http-equiv=Content-Type> 1.16 <link href="../default.css" rel=stylesheet type="text/css"> 1.17 @@ -31,15 +31,15 @@ 1.18 1.19 <h1>CSS Animations</h1> 1.20 1.21 - <h2 class="no-num no-toc" id=longstatus-date>Editor's Draft 29 January 1.22 + <h2 class="no-num no-toc" id=longstatus-date>Editor's Draft 4 February 1.23 2013</h2> 1.24 1.25 <dl> 1.26 <dt>This version: 1.27 1.28 <dd><a 1.29 - href="http://www.w3.org/TR/2013/ED-css3-animations-20130129/">http://dev.w3.org/csswg/css3-animations/</a> 1.30 - <!--http://www.w3.org/TR/2013/WD-css3-animations-20130129/--> 1.31 + href="http://www.w3.org/TR/2013/ED-css3-animations-20130204/">http://dev.w3.org/csswg/css3-animations/</a> 1.32 + <!--http://www.w3.org/TR/2013/WD-css3-animations-20130204/--> 1.33 1.34 <dt>Latest version: 1.35 1.36 @@ -99,7 +99,8 @@ 1.37 title="Massachusetts Institute of Technology">MIT</abbr></a>, <a 1.38 href="http://www.ercim.eu/"><abbr 1.39 title="European Research Consortium for Informatics and Mathematics">ERCIM</abbr></a>, 1.40 - <a href="http://www.keio.ac.jp/">Keio</a>), All Rights Reserved. W3C <a 1.41 + <a href="http://www.keio.ac.jp/">Keio</a>, <a 1.42 + href="http://ev.buaa.edu.cn/">Beihang</a>), All Rights Reserved. W3C <a 1.43 href="http://www.w3.org/Consortium/Legal/ipr-notice#Legal_Disclaimer">liability</a>, 1.44 <a 1.45 href="http://www.w3.org/Consortium/Legal/ipr-notice#W3C_Trademarks">trademark</a> 1.46 @@ -399,6 +400,13 @@ 1.47 animations applied to descendants with display other than ‘<code 1.48 class=property>none</code>’. 1.49 1.50 + <p> While authors can use animations to create dynamically changing 1.51 + content, dynamically changing content can lead to seizures in some users. 1.52 + For information on how to avoid content that can lead to seizures, see <a 1.53 + href="http://www.w3.org/TR/WCAG20/#seizure">Guideline 2.3: Seizures: Do 1.54 + not design content in a way that is known to cause seizures</a> (<a 1.55 + href="#WCAG20" rel=biblioentry>[WCAG20]<!--{{WCAG20}}--></a>). 1.56 + 1.57 <h2 id=keyframes><span class=secno>3. </span> Keyframes</h2> 1.58 1.59 <p> Keyframes are used to specify the values for the animating properties 1.60 @@ -1762,6 +1770,16 @@ 1.61 <dt 1.62 style="display: none"><!-- keeps the doc valid if the DL is empty --> 1.63 <!----> 1.64 + 1.65 + <dt id=WCAG20>[WCAG20] 1.66 + 1.67 + <dd>Ben Caldwell; et al. <a 1.68 + href="http://www.w3.org/TR/2008/REC-WCAG20-20081211/"><cite>Web Content 1.69 + Accessibility Guidelines (WCAG) 2.0.</cite></a> 11 December 2008. W3C 1.70 + Recommendation. URL: <a 1.71 + href="http://www.w3.org/TR/2008/REC-WCAG20-20081211/">http://www.w3.org/TR/2008/REC-WCAG20-20081211/</a> 1.72 + </dd> 1.73 + <!----> 1.74 </dl> 1.75 <!--end-informative--> 1.76 <h2 class=no-num id=property-index>Property index</h2>
2.1 --- a/css3-animations/Overview.src.html Mon Feb 04 20:54:56 2013 -0700 2.2 +++ b/css3-animations/Overview.src.html Mon Feb 04 21:51:58 2013 -0700 2.3 @@ -228,6 +228,16 @@ 2.4 as well as all animations applied to descendants with display other than 'none'. 2.5 </p> 2.6 2.7 + <p> 2.8 + While authors can use animations to create dynamically changing content, 2.9 + dynamically changing content can lead to seizures in some users. 2.10 + For information on how to avoid content that can lead to seizures, see 2.11 + <a href="http://www.w3.org/TR/WCAG20/#seizure">Guideline 2.3: 2.12 + Seizures: 2.13 + Do not design content in a way that is known to cause seizures</a> 2.14 + ([[WCAG20]]). 2.15 + </p> 2.16 + 2.17 <h2 id="keyframes"> 2.18 Keyframes</h2> 2.19 <p>
3.1 --- a/css3-transitions/Overview.html Mon Feb 04 20:54:56 2013 -0700 3.2 +++ b/css3-transitions/Overview.html Mon Feb 04 21:51:58 2013 -0700 3.3 @@ -332,6 +332,13 @@ 3.4 second duration, a transition on the ‘<code class=property>top</code>’ 3.5 property of 2 seconds duration and a transition on the ‘<code 3.6 class=property>width</code>’ property of 1 second duration.</div> 3.7 + 3.8 + <p> While authors can use transitions to create dynamically changing 3.9 + content, dynamically changing content can lead to seizures in some users. 3.10 + For information on how to avoid content that can lead to seizures, see <a 3.11 + href="http://www.w3.org/TR/WCAG20/#seizure">Guideline 2.3: Seizures: Do 3.12 + not design content in a way that is known to cause seizures</a> (<a 3.13 + href="#WCAG20" rel=biblioentry>[WCAG20]<!--{{WCAG20}}--></a>).</p> 3.14 <!-- ======================================================================================================= --> 3.15 3.16 <h3 id=transition-property-property><span class=secno>2.1. </span><a 3.17 @@ -1704,6 +1711,16 @@ 3.18 href="http://www.w3.org/TR/2012/CR-css3-images-20120417/">http://www.w3.org/TR/2012/CR-css3-images-20120417/</a> 3.19 </dd> 3.20 <!----> 3.21 + 3.22 + <dt id=WCAG20>[WCAG20] 3.23 + 3.24 + <dd>Ben Caldwell; et al. <a 3.25 + href="http://www.w3.org/TR/2008/REC-WCAG20-20081211/"><cite>Web Content 3.26 + Accessibility Guidelines (WCAG) 2.0.</cite></a> 11 December 2008. W3C 3.27 + Recommendation. URL: <a 3.28 + href="http://www.w3.org/TR/2008/REC-WCAG20-20081211/">http://www.w3.org/TR/2008/REC-WCAG20-20081211/</a> 3.29 + </dd> 3.30 + <!----> 3.31 </dl> 3.32 <!--end-informative--> 3.33
4.1 --- a/css3-transitions/Overview.src.html Mon Feb 04 20:54:56 2013 -0700 4.2 +++ b/css3-transitions/Overview.src.html Mon Feb 04 21:51:58 2013 -0700 4.3 @@ -175,7 +175,17 @@ 4.4 second duration. 4.5 4.6 </div> 4.7 - 4.8 + 4.9 + <p> 4.10 + While authors can use transitions to create dynamically changing content, 4.11 + dynamically changing content can lead to seizures in some users. 4.12 + For information on how to avoid content that can lead to seizures, see 4.13 + <a href="http://www.w3.org/TR/WCAG20/#seizure">Guideline 2.3: 4.14 + Seizures: 4.15 + Do not design content in a way that is known to cause seizures</a> 4.16 + ([[WCAG20]]). 4.17 + </p> 4.18 + 4.19 <!-- ======================================================================================================= --> 4.20 <h3 id="transition-property-property"><a id="the-transition-property-property-"> 4.21 The 'transition-property' Property
