- From: poot <cvsmail@w3.org>
- Date: 2011年1月11日 21:44:08 -0500
- To: public-html-diffs@w3.org
- Message-Id: <E1Pcqgy-0000GD-GJ@jay.w3.org>
hixie: Rewrite how poster='' works so that it is (a) clearer and (b) actually requires that the poster frame goes away when you remove the attribute. (whatwg r5749) http://dev.w3.org/cvsweb/html5/spec/Overview.html?r1=1.4609&r2=1.4610&f=h http://html5.org/tools/web-apps-tracker?from=5748&to=5749 =================================================================== RCS file: /sources/public/html5/spec/Overview.html,v retrieving revision 1.4609 retrieving revision 1.4610 diff -u -d -r1.4609 -r1.4610 --- Overview.html 7 Jan 2011 22:30:08 -0000 1.4609 +++ Overview.html 7 Jan 2011 22:43:53 -0000 1.4610 @@ -21201,16 +21201,39 @@ attribute gives the address of an image file that the user agent can show while no video data is available. The attribute, if present, must contain a <a href="#valid-non-empty-url-potentially-surrounded-by-spaces">valid non-empty URL potentially surrounded by - spaces</a>. <span class="impl">If the specified resource is to be - used, then, when the element is created or when the <code title="attr-video-poster"><a href="#attr-video-poster">poster</a></code> attribute is set, if its - value is not the empty string, its value must be <a href="#resolve-a-url" title="resolve a url">resolved</a> relative to the element, and - if that is successful, the resulting <a href="#absolute-url">absolute URL</a> must - be <a href="#fetch" title="fetch">fetched</a>, from the element's - <code><a href="#document">Document</a></code>'s <a href="#origin">origin</a>; this must <a href="#delay-the-load-event">delay - the load event</a> of the element's document. The <dfn id="poster-frame">poster - frame</dfn> is then the image obtained from that resource, if - any.</span></p><!-- thus it is unaffected by changes to the base - URL. --><p class="note">The image given by the <code title="attr-video-poster"><a href="#attr-video-poster">poster</a></code> attribute, the <i><a href="#poster-frame">poster + spaces</a>.<div class="impl"> + + <p>If the specified resource is to be used, then, when the element + is created or when the <code title="attr-video-poster"><a href="#attr-video-poster">poster</a></code> + attribute is set, changed, or removed, the user agent must run the + following steps to determine the element's <dfn id="poster-frame">poster + frame</dfn>:</p> <!-- thus it is unaffected by changes to the base + URL. --> + + <ol><li><p>If there is an existing instance of this algorithm running + for this <code><a href="#video">video</a></code> element, abort that instance of this + algorithm without changing the <a href="#poster-frame">poster frame</a>.</li> + + <li><p>If the <code title="attr-video-poster"><a href="#attr-video-poster">poster</a></code> + attribute's value is the empty string, then there is no + <a href="#poster-frame">poster frame</a>; abort these steps.</li> + + <li><p><a href="#resolve-a-url" title="resolve a url">Resolve</a> the <code title="attr-video-poster"><a href="#attr-video-poster">poster</a></code> attribute's value relative + to the element. If this fails, then there is no <a href="#poster-frame">poster + frame</a>; abort these steps.</li> + + <li><p><a href="#fetch">Fetch</a> the resulting <a href="#absolute-url">absolute URL</a>, + from the element's <code><a href="#document">Document</a></code>'s <a href="#origin">origin</a>. + This must <a href="#delay-the-load-event">delay the load event</a> of the element's + document.</li> + + <!-- could define how to sniff for an image here --> + + <li><p>If an image is thus obtained, the <a href="#poster-frame">poster frame</a> + is that image. Otherwise, there is no <a href="#poster-frame">poster + frame</a>.</li> + + </ol></div><p class="note">The image given by the <code title="attr-video-poster"><a href="#attr-video-poster">poster</a></code> attribute, the <i><a href="#poster-frame">poster frame</a></i>, is intended to be a representative frame of the video (typically one of the first non-blank frames) that gives the user an idea of what the video is like.<div class="impl">
Received on Wednesday, 12 January 2011 02:44:10 UTC