2Dapi; hixie: Neuter 'currentColor' for addColorStop(), so that we don't have to track around which <canvas> created which CanvasGradient all the time. (whatwg r5389)

2Dapi; hixie: Neuter 'currentColor' for addColorStop(), so that we don't
have to track around which <canvas> created which CanvasGradient all the
time. (whatwg r5389)

http://dev.w3.org/cvsweb/html5/2dcontext/Overview.html?r1=1.68&r2=1.69&f=h
http://html5.org/tools/web-apps-tracker?from=5388&to=5389

===================================================================
RCS file: /sources/public/html5/2dcontext/Overview.html,v
retrieving revision 1.68
retrieving revision 1.69
diff -u -d -r1.68 -r1.69
--- Overview.html 27 Aug 2010 23:06:06 -0000 1.68
+++ Overview.html 28 Aug 2010 04:42:30 -0000 1.69
@@ -311,7 +311,7 @@
 
    <h1>HTML Canvas 2D Context</h1>
    <h2 class="no-num no-toc" id="generatedID"></h2>
-   <h2 class="no-num no-toc" id="editor-s-draft-27-august-2010">Editor's Draft 27 August 2010</h2>
+   <h2 class="no-num no-toc" id="editor-s-draft-28-august-2010">Editor's Draft 28 August 2010</h2>
    <dl><dt>Latest Published Version:</dt>
     <dd><a href="http://www.w3.org/TR/2dcontext/">http://www.w3.org/TR/2dcontext/</a></dd>
     <dt>Latest Editor's Draft:</dt>
@@ -406,7 +406,7 @@
   Group</a> is the W3C working group responsible for this
   specification's progress along the W3C Recommendation
   track.
-  This specification is the 27 August 2010 Editor's Draft.
+  This specification is the 28 August 2010 Editor's Draft.
   </p><!-- UNDER NO CIRCUMSTANCES IS THE PRECEDING PARAGRAPH TO BE REMOVED OR EDITED WITHOUT TALKING TO IAN FIRST --><!-- relationship to other work (required) --><p>Work on this specification is also done at the <a href="http://www.whatwg.org/">WHATWG</a>. The W3C HTML working group
   actively pursues convergence with the WHATWG, as required by the <a href="http://www.w3.org/2007/03/HTML-WG-charter">W3C HTML working
   group charter</a>.</p><!-- UNDER NO CIRCUMSTANCES IS THE FOLLOWING PARAGRAPH TO BE REMOVED OR EDITED WITHOUT TALKING TO IAN FIRST --><!-- UNDER NO CIRCUMSTANCES IS THE PRECEDING PARAGRAPH TO BE REMOVED OR EDITED WITHOUT TALKING TO IAN FIRST --><!-- context and rationale (required) --><!-- (this text is from the RDFa+HTML spec --><p>This specification is an extension to the HTML5 language. All
@@ -625,6 +625,19 @@
   computed value of the <code title="">currentColor</code> keyword is
   fully opaque black. <a href="#refsCSSCOLOR">[CSSCOLOR]</a></p>
 
+  <p>In the case of <code title="dom-canvasgradient-addColorStop"><a href="#dom-canvasgradient-addcolorstop">addColorStop()</a></code> on
+  <code><a href="#canvasgradient">CanvasGradient</a></code>, the "computed value of the 'color'
+  property" for the purposes of determining the computed value of the
+  <code title="">currentColor</code> keyword is always fully opaque
+  black (there is no associated element). <a href="#refsCSSCOLOR">[CSSCOLOR]</a></p>
+
+  <p class="note">This is because <code><a href="#canvasgradient">CanvasGradient</a></code> objects
+  are <code>canvas</code>-neutral &mdash; a
+  <code><a href="#canvasgradient">CanvasGradient</a></code> object created by one
+  <code>canvas</code> can be used by another, and there is therefore
+  no way to know which is the "element in question" at the time that
+  the color is specified.</p>
+
   </div><h2 id="the-canvas-state"><span class="secno">2 </span>The canvas state</h2><p>Each context maintains a stack of drawing states. <dfn id="drawing-state" title="drawing state">Drawing states</dfn> consist of:<ul class="brief"><li>The current <a href="#transformations" title="dom-context-2d-transformation">transformation matrix</a>.</li>
    <li>The current <a href="#clipping-region">clipping region</a>.</li>
    <li>The current values of the following attributes: <code title="dom-context-2d-strokeStyle"><a href="#dom-context-2d-strokestyle">strokeStyle</a></code>, <code title="dom-context-2d-fillStyle"><a href="#dom-context-2d-fillstyle">fillStyle</a></code>, <code title="dom-context-2d-globalAlpha"><a href="#dom-context-2d-globalalpha">globalAlpha</a></code>, <code title="dom-context-2d-lineWidth"><a href="#dom-context-2d-linewidth">lineWidth</a></code>, <code title="dom-context-2d-lineCap"><a href="#dom-context-2d-linecap">lineCap</a></code>, <code title="dom-context-2d-lineJoin"><a href="#dom-context-2d-linejoin">lineJoin</a></code>, <code title="dom-context-2d-miterLimit"><a href="#dom-context-2d-miterlimit">miterLimit</a></code>, <code title="dom-context-2d-shadowOffsetX"><a href="#dom-context-2d-shadowoffsetx">shadowOffsetX</a></code>, <code title="dom-context-2d-shadowOffsetY"><a href="#dom-context-2d-shadowoffsety">shadowOffsetY</a></code>, <code title="dom-context-2d-shadowBlur"><a href="#dom-context-2-shadowblur">shadowBlur</a></code>, <code title="dom-context-2d-shadowColor"><a href="#dom-context-2d-shadowcolor">shadowColor</a></code>, <code title="dom-context-2d-globalCompositeOperation"><a href="#dom-context-2d-globalcompositeoperation">globalCompositeOperation</a></code>, <code title="dom-context-2d-font"><a href="#dom-context-2d-font">font</a></code>, <code title="dom-context-2d-textAlign"><a href="#dom-context-2d-textalign">textAlign</a></code>, <code title="dom-context-2d-textBaseline"><a href="#dom-context-2d-textbaseline">textBaseline</a></code>.</li>

Received on Saturday, 28 August 2010 04:43:16 UTC