[css-writing-modes] Drop use-glyph-orientation, define glyph-orientation-vertical as an alias to text-orientation per WG resolution. (This totally makes more sense.)

Author: fantasai

css-writing-modes/Overview.bs

@@ -912,8 +912,6 @@ Block Flow Direction: the 'writing-mode' property</h3>
 <h4 id="svg-writing-mode">
 SVG1.1 'writing-mode' Values</h4>
 
-  <p class="issue">SVG should inherit writing-mode or not? <a href="https://lists.w3.org/Archives/Public/www-style/2015May/0150.html">www-style</a>
-
   <p>SVG1.1 [[!SVG11]] defines some additional values: ''lr'',
     ''lr-tb'', ''rl'', ''rl-tb'', ''tb'', and ''tb-rl''.
 
@@ -1183,7 +1181,7 @@ Orienting Text: the 'text-orientation' property</h3>
 
   <pre class='propdef'>
   Name: text-orientation
-  Value: mixed | upright | sideways-right | sideways | use-glyph-orientation
+  Value: mixed | upright | sideways-right | sideways
   Initial: mixed
   Applies to: all elements except table row groups, rows, column groups, and columns
   Inherited: yes
@@ -1230,22 +1228,6 @@ Orienting Text: the 'text-orientation' property</h3>
       in a horizontal layout, but rotated 90&deg; clockwise.
     <dt><dfn>sideways</dfn></dt>
     <dd><p>This value is equivalent to ''sideways-right''.
-    <dt><dfn>use-glyph-orientation</dfn></dt>
-    <dd><p>[[!SVG11]] defines 'glyph-orientation-vertical' and
-      'glyph-orientation-horizontal' properties that were intended to control
-      text orientation. These properties are <em>deprecated</em> and do not
-      apply to non-SVG elements. If an implementation supports these properties,
-      the ''use-glyph-orientation'' value when set on SVG elements indicates
-      that the SVG
-      'glyph-orientation-vertical' and 'glyph-orientation-horizontal'
-      behavior control the layout of text. Such UAs must set
-      ''text-orientation: use-glyph-orientation'' on all
-      <a href="http://www.w3.org/TR/SVG/intro.html#TermTextContentElement">SVG
-      text content elements</a> in their default UA style sheet for SVG.
-      <p>In all other contexts, and for implementations that do not support
-      the glyph orientation properties, the ''use-glyph-orientation'' behavior
-      is the same as for ''mixed''.
-      <p class="note">This value is at-risk and may be dropped during CR.
   </dl>
 
   <div class="figure" id="fig-text-orientation">
@@ -1387,6 +1369,48 @@ Mixed Vertical Orientations</h4>
   have a problem.
 -->
 
+<h4 id="glyph-orientation">
+Obsolete: the SVG1.1 'glyph-orientation-vertical' property</h4>
+
+  <pre class='propdef'>
+  Name: glyph-orientation-horizontal
+  Value: auto | 0deg | 90deg
+  Initial: n/a
+  Applies to: n/a
+  Inherited: na/
+  Percentages: n/a
+  Media: n/a
+  Computed value: n/a
+  Animatable: n/a
+  Canonical order: n/a
+  </pre>
+
+  Some SVG user agents will need to process documents containing
+  the obsolete SVG 'glyph-orientation-vertical' property.
+  It is recommended that such UAs treat 'glyph-orientation-horizontal'
+  as a shorthand alias of 'text-orientation' as follows:
+  
+  <table class="data">
+    <thead>
+      <tr>
+        <th>Shorthand 'glyph-orientation-vertical' value
+        <th>Longhand 'text-orientation' value
+    <tbody>
+      <tr>
+        <td>''glyph-orientation-vertical/auto''
+        <td>''mixed''
+      <tr>
+        <td>''0deg''
+        <td>''upright''
+      <tr>
+        <td>''90deg''
+        <td>''sideways''
+  </table>
+
+  Note: The ''180deg'' and ''270deg'' values
+  and the 'glyph-orientation-horizontal' property
+  are not mapped because they have no known use cases.
+
 <h2 id="abstract-box">
 Abstract Box Terminology</h2>
 
@@ -2587,8 +2611,12 @@ Full-width Characters</h5>
   <h3 class="no-num" id="changes-201311">
   Changes since the <a href="http://www.w3.org/TR/2014/CR-css-writing-modes-3-20140320/">March
   2014 CSS Writing Modes Module Level 3 Candidate Recommendation</a></h3>
+
   <ul>
     <li>Fixed orthogonal flows auto-sizing rules to better handle shrink-wrapping.
+    <li>Removed ''sideways-left'' value of 'text-orientation' and added ''sideways-lr'' and ''sideways-rl'' values to 'writing-mode'.
+    <li>Removed ''use-glyph-orientation'' value of 'text-orientation' and defined 'glyph-orientation-vertical' as an alias of 'text-orientation'
+      consistent with how CSS aliases are handled (see 'page-break-inside' for an example).
   </ul>
 
   <ul>