ttml: changeset 521:36456238998f

--- a/ttml2/spec/ttml2-changes.html	Wed Aug 28 13:21:48 2013 -0600
+++ b/ttml2/spec/ttml2-changes.html	Wed Aug 28 13:38:55 2013 -0600
@@ -74,6 +74,9 @@
 * In 8.3, add &lt;border-color&gt;, &lt;border-style&gt;, and &lt;border-width&gt;
   value expressions.
 
+* In 8.3.12, add 'vw', 'vh', 'vmin', and 'vmax' units of measure in order to express
+  lengths as a percentage of the root container region (as viewport).
+
 * In 8.4.4, add semantics for determining specified style set and computed style set
   for 'set' element.

--- a/ttml2/spec/ttml2.xml	Wed Aug 28 13:21:48 2013 -0600
+++ b/ttml2/spec/ttml2.xml	Wed Aug 28 13:38:55 2013 -0600
@@ -6831,6 +6831,10 @@
   : "px"
   | "em"
   | "c"                                     // abbreviation of "cell"
+  | "vw"
+  | "vh"
+  | "vmin"
+  | "vmax"
 </eg>
 </td>
 </tr>
@@ -6853,6 +6857,14 @@
 <p>The semantics of the unit of measure <code>c</code> (cell) are
 defined by the parameter <specref
 ref="parameter-attribute-cellResolution"/>.</p>
+<p>The unit of measure <code>vw</code> and <code>vh</code> are defined as
+one percent (1%) of the width and height of the <emph>Root Container Region</emph>, respectively.
+For example, the length <code>25vw</code> is interpreted as 25% of the width of
+the <emph>Root Container Region</emph>.</p>
+<p>The units of measure <code>vmin</code> and <code>vmax</code> are defined as
+the minimum and maxium of <code>vw</code> and <code>vh</code>, respectively. For example,
+the length <code>25vmin</code> is interpreted as the minimum of 25% of the width and
+25% of the height of the <emph>Root Container Region</code></p>
 </div3>
 <div3 id="style-value-namedColor">
 <head>&lt;namedColor&gt;</head>

author	Glenn Adams <glenn@skynav.com>
	Wed, 28 Aug 2013 13:38:55 -0600
changeset 521	36456238998f
parent 520	560232291dde
child 522	77f3c63e18bf

ttml2/spec/ttml2-changes.html
ttml2/spec/ttml2.xml