- From: Steve Faulkner <faulkner.steve@gmail.com>
- Date: Tue, 26 Oct 2010 11:29:48 +0100
- To: "Schnabel, Stefan" <stefan.schnabel@sap.com>
- Cc: W3C WAI-XTECH <wai-xtech@w3.org>, HTML Accessibility Task Force <public-html-a11y@w3.org>
- Message-ID: <AANLkTimPG3Ltv0XfXgFnRKwRQu=ndTGNzVVJsXbZ7cSK@mail.gmail.com>
Hi Stefan, >This leads to the potential request/requirement for a “type” flag (e.g. figure type=”text” or type=”graphics”) that indicates the inner content. A>ccording to the value, UA’s may adjust their mapping (just an idea). to make it useful it may well need some sort of classification indicator. >Besides of this, it should be discussed if figure content can also contain <canvas>, <svg> or <object> elements that do display illustrations and >diagrams. the figure element can can contain any elements categorised as flow content: http://dev.w3.org/html5/spec/content-models.html#flow-content Also note the <figcaption> is not a required child of <figure> regards Steve On 25 October 2010 14:53, Schnabel, Stefan <stefan.schnabel@sap.com> wrote: > Steve, > > > > Good point. The aria role *img* (MSAA ROLE_SYSTEM_GRAPHIC, Image)would > probably map to <figure> if the example depicts 3 parts of a castle: > > > > <figure role=”img”> > > <img src="castle1423a.jpeg" title="left part" > > alt="left part of the castle” > > <img src="castle1423b.jpeg" title="middle” > > alt="middle part of the castle” > > <img src=" castle1423c.jpeg" title="right” > > alt="right part of the castle"> > > <figcaption>The castle</figcaption> > > </figure> > > > > But for code examples it is more like (MSAA ROLE_SYSTEM_TEXT, > IA2_ROLE_HEADING, Text) for the content can be text node only .. > > > > This leads to the potential request/requirement for a “type” flag (e.g. > figure type=”text” or type=”graphics”) that indicates the inner content. > > According to the value, UA’s may adjust their mapping (just an idea). > > > > Besides of this, it should be discussed if figure content can also contain > <canvas>, <svg> or <object> elements that do display illustrations and > diagrams. > > > > - Stefan > > > > > > *From:* wai-xtech-request@w3.org [mailto:wai-xtech-request@w3.org] *On > Behalf Of *Steve Faulkner > *Sent:* Montag, 25. Oktober 2010 11:33 > *To:* W3C WAI-XTECH; HTML Accessibility Task Force > *Subject:* thinking about HTML5 figure and figcaption elements > > > > Hi all, > > > > I have been wondering about how the HTML5 figure [1] and figcaption > elements should be mapped to accessibility APIs and aslo what advice should > be provided to AT about conveying its semantics to users. > > > > The figure element: > > "The element can thus be used to annotate illustrations, diagrams, photos, > code listings, etc," > > > > The figcaption element: > > "The figcaption element represents a caption or legend for the rest of the > contents of the figcaption element's parent figure element, if any." > > > > Code examples from the spec: > > > > Example 1 > > > > <figure id="l4"> > > <figcaption>Listing 4. The primary core interface API > declaration.</figcaption> > > <pre><code>interface PrimaryCore { > > boolean verifyDataLine(); > > void sendData(in sequence<byte> data); > > void initSelfDestruct(); > > }</code></pre> > > </figure> > > > > Example 2 > > <figure> > > <img src="bubbles-work.jpeg"alt="Bubbles, sitting in his office chair, > works on his latest project intently."> > > <figcaption>Bubbles at work</figcaption> > > </figure> > > > > Example 3 > > <figure> > <p>'Twas brillig, and the slithy toves<br> > Did gyre and gimble in the wabe;<br> > All mimsy were the borogoves,<br> > And the mome raths outgrabe.</p> > <figcaption><cite>Jabberwocky</cite> (first verse). Lewis Carroll, > 1832-98</figcaption> > </figure> > > Example 4 > > > > <figure> > <img src="castle1423.jpeg" title="Etching. Anonymous, ca. 1423." > alt="The castle has one tower, and a tall wall around it."> > <img src="castle1858.jpeg" title="Oil-based paint on canvas. Maria Towle, > 1858." > alt="The castle now has two towers and two walls."> > <img src="castle1999.jpeg" title="Film photograph. Peter Jankle, 1999." > alt="The castle lies in ruins, the original tower all that remains in > one piece."> > <figcaption>The castle through the ages: 1423, 1858, and 1999 > respectively.</figcaption> > </figure> > > > > In order to make the figure/figcaption a useful semantic container a > standard set of rules > needs to be worked out on how the figcaption/figure element.s will work. > > > > For example: > > - should the figcaption be the accessible name for the figure element? > - What are the default roles of the figure and figcaption elements? > - Should the role of the figure element change depending on the content > of figure? > - Should the name of the elements be presented to users? > - What is the relationship between alt and title on images within the > figure and the figcaption content? > - Should accessible relationships be hardwired into the browser > accessibility API mappings or left up to the AT? > > [1] http://dev.w3.org/html5/spec/grouping-content.html#the-figure-element > > [2] http://dev.w3.org/html5/spec/grouping-content.html#the-figcaption-element > > -- > > > > with regards > > > > Steve Faulkner > > Technical Director - TPG Europe > > Director - Web Accessibility Tools Consortium > > > > www.paciellogroup.com | www.wat-c.org > > Web Accessibility Toolbar - > http://www.paciellogroup.com/resources/wat-ie-about.html > > > -- with regards Steve Faulkner Technical Director - TPG Europe Director - Web Accessibility Tools Consortium www.paciellogroup.com | www.wat-c.org Web Accessibility Toolbar - http://www.paciellogroup.com/resources/wat-ie-about.html
Received on Tuesday, 26 October 2010 10:30:43 UTC