- From: Elika Etemad via cvs-syncmail <cvsmail@w3.org>
- Date: Tue, 10 May 2011 19:42:05 +0000
- To: public-css-commits@w3.org
Update of /sources/public/csswg/css3-writing-modes
In directory hutz:/tmp/cvs-serv25074
Modified Files:
Overview.html Overview.src.html
Log Message:
A different approach to vertical typesetting synthesis
Index: Overview.html
===================================================================
RCS file: /sources/public/csswg/css3-writing-modes/Overview.html,v
retrieving revision 1.108
retrieving revision 1.109
diff -u -d -r1.108 -r1.109
--- Overview.html 10 May 2011 18:30:12 -0000 1.108
+++ Overview.html 10 May 2011 19:42:02 -0000 1.109
@@ -1684,41 +1684,81 @@
<li>If the UA needs to synthesize such features (e.g. if an OpenType font
has only the <code>vert</code> but not the <code>vrt2</code> feature),
- then it should handle symbols (S*) and punctuation (P*) as follows:
- <ul>
- <li>for ‘<a href="#vertical-right"><code
- class=css>vertical-right</code></a>’, set all characters with an
- East Asian Width property <a href="#UAX11"
- rel=biblioentry>[UAX11]<!--{{!UAX11}}--></a> of fullwidth (F) or wide
- (W) upright (i.e. translated, using vertical font settings if
- available), and set all narrow (Na) and neutral (N) characters sideways
- (i.e. rotated, using horizontal font settings). The behavior of most
- ambiguous (A) symbols and punctuation is undefined in this version of
- CSS.
+ then for characters belonging to the Common, Inherited, and Unknown
+ script categories the following settings are recommended:
+ <dl>
+ <dt>when ‘<a href="#text-orientation0"><code
+ class=property>text-orientation</code></a>’ is ‘<a
+ href="#vertical-right"><code class=css>vertical-right'</code></a>
- <li>for ‘<a href="#upright"><code
- class=css>upright</code></a>’, set all characters belonging to
- the Mongolian and Phags Pa scripts sideways, and set upright the rest.
- </ul>
- Additionally, spaces (Zs) should either be set upright if vertical
- metrics are available or set sideways if they are not. Thus a
- THREE-PER-EM SPACE (U+2004) will able to provide a 1/3-em advance in the
- inline dimension.
+ <dd> Set the following characters upright (i.e. translated, using
+ vertical font settings if available):
+ <ul>
+ <li>All characters with an East Asian Width property <a href="#UAX11"
+ rel=biblioentry>[UAX11]<!--{{!UAX11}}--></a> of fullwidth (F) or wide
+ (W).
+
+ <li>All characters outside the Latin-1 block (U+000–U+00FF) that
+ belong to the Other Symbols (So) category.
+
+ <li>All characters that belong to the Other Number (No) category
+ except the superscripts and subscripts. <span class=issue>This
+ includes the North Indic Fractions and the Aegean numbers, is this
+ correct or should they be sideways?</span>
+ </ul>
+ Set the following characters sideways (i.e. rotated, using horizontal
+ font settings):
+ <ul>
+ <li>All characters with an East Asian Width property <a href="#UAX11"
+ rel=biblioentry>[UAX11]<!--{{!UAX11}}--></a> of narrow (Na).
+
+ <li>All characters with an East Asian Width property <a href="#UAX11"
+ rel=biblioentry>[UAX11]<!--{{!UAX11}}--></a> of neutral (N) not
+ otherwise mentioned.
+
+ <li>Currency Symbols (Sc) and Math Symbols (Sm)
+ </ul>
+ Set the following characters using vertical font settings if available,
+ otherwise set them sideways:
+ <ul>
+ <li>Other Punctuation (Po) with an East Asian Width property <a
+ href="#UAX11" rel=biblioentry>[UAX11]<!--{{!UAX11}}--></a> of
+ ambiguous (A).
+
+ <li>Other Symbols (So) characters from the Latin-1 block
+
+ <li>Superscripts and subscripts from the Other Number (No) category.
+
+ <li>Private Use characters (Co)
+ </ul>
+
+ <dt>when 'text-orientation' is ’upright'‘<code
+ class=css></code>
+
+ <dd>Set all characters upright unless otherwise specified below.
+ </dl>
+ Additionally, spaces (Zs), dashes (Pd), connectors (Pc), and delimiting
+ punctuation (Ps, Pe, Pi, Pf) should either be set with vertical metrics /
+ alternates if available or set sideways if they are not. Thus a
+ THREE-PER-EM SPACE (U+2004) can be expected to provide a 1/3-em advance
+ in the inline dimension, and brackets can be expected to encase their
+ contents.
</ul>
<h2 id=abstract-box><span class=secno>6. </span> Abstract Box Terminology</h2>
<p><a href="#CSS21" rel=biblioentry>[CSS21]<!--{{!CSS21}}--></a> defines
the box layout model of CSS in detail. However, it only defines the box
- model for the ‘<a href="#horizontal-tb"><code
- class=css>horizontal-tb</code></a>’ writing mode. CSS box layout in
- writing modes other than ‘<a href="#horizontal-tb"><code
- class=css>horizontal-tb</code></a>’ is analogous to the box layout
- defined in CSS2.1 if directions and dimensions are abstracted and remapped
- appropriately. This section defines abstract directional and dimensional
- terms and their mappings in order to define box layout for other writing
- modes, and to provide terminology for future specs to define their layout
- concepts abstractly.
+ model for the ’‘<a href="#horizontal-tb"><code
+ class=property>horizontal-tb</code></a>’‘<code class=css>
+ writing mode. CSS box layout in writing modes other than
+ </code>’‘<a href="#horizontal-tb"><code
+ class=property>horizontal-tb</code></a>’‘<code class=css> is
+ analogous to the box layout defined in CSS2.1 if directions and dimensions
+ are abstracted and remapped appropriately. This section defines abstract
+ directional and dimensional terms and their mappings in order to define
+ box layout for other writing modes, and to provide terminology for future
+ specs to define their layout concepts abstractly. </code>
<h3 id=abstract-dimensions><span class=secno>6.1. </span> Logical
Dimensions</h3>
@@ -1781,9 +1821,8 @@
<p>Although they derive from the behavior of text, these directional terms
exist even for boxes that do not contain any line boxes: they are
- calculated directly from the values of the ‘<a
- href="#writing-mode1"><code class=property>writing-mode</code></a>’,
- ‘<a href="#text-orientation0"><code
+ calculated directly from the values of the ’writing-mode', ‘<a
+ href="#text-orientation0"><code
class=property>text-orientation</code></a>’, and ‘<a
href="#direction0"><code class=property>direction</code></a>’
properties.
@@ -2790,68 +2829,6 @@
h1, h2, h3, h4, h5, h6,
{ unicode-bidi: isolate; }
</pre>
- <!--
-
-<h2 class="no-num" id="ambiguous">Appendix A:
-Orienting Ambiguous Characters in ''vertical-right''</h2>
-
- <p>The synthesized ''vertical-right'' orientation of most symbols (S*) and
- punctuation (P*) classified as ambiguous (A) by the East Asian Width
- Property [[!UAX11]] is undefined in this version of CSS.
- However, for some characters there are some exceptions, listed in the
- table below:
-
- <p class="issue">Do we want to do this? Or leave them all undefined? Or make
- these all sideways?</p>
-
- <table class="data">
- <caption>Unicode 6.0 Upright Characters</caption>
- <thead>
- <th>Codepoint(s)
- <th>Sample
- <th>Name(s)
- </thead>
- <tbody>
- <tr><td>U+2103 <td> ℃ <td> DEGREE CELSIUS
- <tr><td>U+2105 <td> ℅ <td> CARE OF
- <tr><td>U+2109 <td> ℉ <td> DEGREE FAHRENHEIT
- <tr><td>U+2113 <td> ℓ <td> SCRIPT SMALL L
- <tr><td>U+2116 <td> № <td> NUMERO SIGN
- <tr><td>U+2121 <td> ℡ <td> TELEPHONE SIGN
- <tr><td>U+2122 <td> ™ <td> TRADE MARK SIGN
- <tr><td>U+2126 <td> Ω <td> OHM SIGN
- <tr><td>U+212B <td> Å <td> ANGSTROM SIGN
- </tbody>
- <tbody>
- <tr><td>U+00BC–U+00BE <td> ¼–¾ <td> VULGAR FRACTION ONE QUARTER – THREE QUARTERS
- <tr><td>U+2150–U+215F <td> ⅐–⅟ <td>VULGAR FRACTION ONE SEVENTH – FRACTION NUMERATOR ONE
- <tr><td>U+2189 <td> ↉ <td> VULGAR FRACTION ZERO THIRDS
- <tr><td>U+2160–U+216B <td> Ⅰ– Ⅻ <td> ROMAN NUMERAL ONE &ndash TWELVE
- <tr><td>U+2170–2179 <td> ⅰ–ⅹ <td> SMALL ROMAN NUMERAL ONE – TEN
- </tbody>
- <tbody>
- <tr><td>U+24EA <td> ⓪ <td> CIRCLED DIGIT ZERO
- <tr><td>U+2460–U+2473 <td> ① –⑳ <td> CIRCLED DIGIT ONE – TWENTY
- <tr><td>U+3251–U+325F <td> ㉑–㉟ <td> CIRCLED NUMBER TWENTY ONE – THIRTY FIVE
- <tr><td>U+32B1–U+32BF <td> ㊱–㊿ <td> CIRCLED NUMBER THIRTY SIX – FIFTY
- <tr><td>U+2474–U+2487 <td> ⑴–⒇ <td> PARENTHESIZED DIGIT ONE – TWENTY
- <tr><td>U+1F100 <td> 🄀 <td> DIGIT ZERO FULL STOP
- <tr><td>U+2488–U+249B <td> ⒈–⒛ <td> DIGIT ONE FULL STOP – NUMBER TWENTY FULL STOP
- <tr><td>U+24F5–U+24FE <td> ⓵ –⓾ <td> DOUBLE CIRCLED DIGIT ONE – NUMBER TEN
- <tr><td>U+2776–U+277F <td> ❶ – ❿ <td> DINGBAT NEGATIVE CIRCLED DIGIT ONE – TEN
- <tr><td>U+24EB–U+24F4 <td> ⓫–⓴ <td> NEGATIVE CIRCLED NUMBER ELEVEN – TWENTY
- <tr><td>U+24FF <td> ⓿ <td> NEGATIVE CIRCLED DIGIT ZERO
- <tr><td>U+1F110–U+1F129 <td> 🄐–🄩 <td> PARENTHESIZED LATIN CAPITAL LETTER A – Z
- <tr><td>U+249C–U+24B5 <td> ⒜–⒵ <td> PARENTHESIZED LATIN SMALL LETTER A – Z
- <tr><td>U+24B6–U+24E9 <td> Ⓐ –ⓩ <td> CIRCLED LATIN CAPITAL LETTER A – SMALL LETTER Z
- </tbody>
-
- <p class="issue">Any errors? Any other non-ambiguous orientations to add here?</p>
-
- <p>Characters belonging to categories other than punctuation and symbols
- are discussed in <a href="#vertical-typesetting">Vertical Typesetting</a>.
-
--->
<h2 class=no-num id=script-orientations>Appendix B: Bi-orientational
Transformations</h2>
Index: Overview.src.html
===================================================================
RCS file: /sources/public/csswg/css3-writing-modes/Overview.src.html,v
retrieving revision 1.113
retrieving revision 1.114
diff -u -d -r1.113 -r1.114
--- Overview.src.html 10 May 2011 18:30:12 -0000 1.113
+++ Overview.src.html 10 May 2011 19:42:03 -0000 1.114
@@ -1223,21 +1223,52 @@
<li>If the UA needs to synthesize such features (e.g. if an OpenType font
has only the <code>vert</code> but not the <code>vrt2</code> feature),
- then it should handle symbols (S*) and punctuation (P*) as follows:
- <ul>
- <li>for ''vertical-right'', set all characters with an East Asian Width
- property [[!UAX11]] of fullwidth (F) or wide (W) upright (i.e.
- translated, using vertical font settings if available), and
- set all narrow (Na) and neutral (N) characters sideways (i.e. rotated,
- using horizontal font settings). The behavior of most ambiguous (A)
- symbols and punctuation is undefined in this version of CSS.
- <li>for ''upright'', set all characters belonging to the Mongolian and
- Phags Pa scripts sideways, and set upright the rest.
- </ul>
- Additionally, spaces (Zs) should either be set upright if vertical
- metrics are available or set sideways if they are not. Thus a
- THREE-PER-EM SPACE (U+2004) will able to provide a 1/3-em advance in the
- inline dimension.
+ then for characters belonging to the Common, Inherited, and Unknown
+ script categories the following settings are recommended:
+ <dl>
+ <dt>when 'text-orientation' is ''vertical-right'</dt>
+ <dd>
+ Set the following characters upright (i.e. translated,
+ using vertical font settings if available):
+ <ul>
+ <li>All characters with an East Asian Width property [[!UAX11]]
+ of fullwidth (F) or wide (W).
+ <li>All characters outside the Latin-1 block (U+000–U+00FF)
+ that belong to the Other Symbols (So) category.
+ <li>All characters that belong to the Other Number (No) category
+ except the superscripts and subscripts.
+ <span class="issue">This includes the North Indic Fractions and
+ the Aegean numbers, is this correct or should they be sideways?</span>
+ </ul>
+ Set the following characters sideways (i.e. rotated,
+ using horizontal font settings):
+ <ul>
+ <li>All characters with an East Asian Width property [[!UAX11]]
+ of narrow (Na).
+ <li>All characters with an East Asian Width property [[!UAX11]]
+ of neutral (N) not otherwise mentioned.
+ <li>Currency Symbols (Sc) and Math Symbols (Sm)
+ </ul>
+ Set the following characters using vertical font settings if
+ available, otherwise set them sideways:
+ <ul>
+ <li>Other Punctuation (Po) with an East Asian Width property [[!UAX11]]
+ of ambiguous (A).
+ <li>Other Symbols (So) characters from the Latin-1 block
+ <li>Superscripts and subscripts from the Other Number (No)
+ category.
+ <li>Private Use characters (Co)
+ </ul>
+ <dt>when 'text-orientation' is ''upright''</dt>
+ <dd>Set all characters upright unless otherwise specified below.
+ </dl>
+ Additionally, spaces (Zs), dashes (Pd), connectors (Pc), and
+ delimiting punctuation (Ps, Pe, Pi, Pf)
+ should either be set with vertical metrics / alternates if available
+ or set sideways if they are not.
+ Thus a THREE-PER-EM SPACE (U+2004) can be expected to provide a 1/3-em
+ advance in the inline dimension, and brackets can be expected to encase
+ their contents.
</ul>
<h2 id="abstract-box">
@@ -2104,69 +2135,6 @@
{ unicode-bidi: isolate; }
</pre>
-<!--
-
-<h2 class="no-num" id="ambiguous">Appendix A:
-Orienting Ambiguous Characters in ''vertical-right''</h2>
-
- <p>The synthesized ''vertical-right'' orientation of most symbols (S*) and
- punctuation (P*) classified as ambiguous (A) by the East Asian Width
- Property [[!UAX11]] is undefined in this version of CSS.
- However, for some characters there are some exceptions, listed in the
- table below:
-
- <p class="issue">Do we want to do this? Or leave them all undefined? Or make
- these all sideways?</p>
-
- <table class="data">
- <caption>Unicode 6.0 Upright Characters</caption>
- <thead>
- <th>Codepoint(s)
- <th>Sample
- <th>Name(s)
- </thead>
- <tbody>
- <tr><td>U+2103 <td> ℃ <td> DEGREE CELSIUS
- <tr><td>U+2105 <td> ℅ <td> CARE OF
- <tr><td>U+2109 <td> ℉ <td> DEGREE FAHRENHEIT
- <tr><td>U+2113 <td> ℓ <td> SCRIPT SMALL L
- <tr><td>U+2116 <td> № <td> NUMERO SIGN
- <tr><td>U+2121 <td> ℡ <td> TELEPHONE SIGN
- <tr><td>U+2122 <td> ™ <td> TRADE MARK SIGN
- <tr><td>U+2126 <td> Ω <td> OHM SIGN
- <tr><td>U+212B <td> Å <td> ANGSTROM SIGN
- </tbody>
- <tbody>
- <tr><td>U+00BC–U+00BE <td> ¼–¾ <td> VULGAR FRACTION ONE QUARTER – THREE QUARTERS
- <tr><td>U+2150–U+215F <td> ⅐–⅟ <td>VULGAR FRACTION ONE SEVENTH – FRACTION NUMERATOR ONE
- <tr><td>U+2189 <td> ↉ <td> VULGAR FRACTION ZERO THIRDS
- <tr><td>U+2160–U+216B <td> Ⅰ– Ⅻ <td> ROMAN NUMERAL ONE &ndash TWELVE
- <tr><td>U+2170–2179 <td> ⅰ–ⅹ <td> SMALL ROMAN NUMERAL ONE – TEN
- </tbody>
- <tbody>
- <tr><td>U+24EA <td> ⓪ <td> CIRCLED DIGIT ZERO
- <tr><td>U+2460–U+2473 <td> ① –⑳ <td> CIRCLED DIGIT ONE – TWENTY
- <tr><td>U+3251–U+325F <td> ㉑–㉟ <td> CIRCLED NUMBER TWENTY ONE – THIRTY FIVE
- <tr><td>U+32B1–U+32BF <td> ㊱–㊿ <td> CIRCLED NUMBER THIRTY SIX – FIFTY
- <tr><td>U+2474–U+2487 <td> ⑴–⒇ <td> PARENTHESIZED DIGIT ONE – TWENTY
- <tr><td>U+1F100 <td> 🄀 <td> DIGIT ZERO FULL STOP
- <tr><td>U+2488–U+249B <td> ⒈–⒛ <td> DIGIT ONE FULL STOP – NUMBER TWENTY FULL STOP
- <tr><td>U+24F5–U+24FE <td> ⓵ –⓾ <td> DOUBLE CIRCLED DIGIT ONE – NUMBER TEN
- <tr><td>U+2776–U+277F <td> ❶ – ❿ <td> DINGBAT NEGATIVE CIRCLED DIGIT ONE – TEN
- <tr><td>U+24EB–U+24F4 <td> ⓫–⓴ <td> NEGATIVE CIRCLED NUMBER ELEVEN – TWENTY
- <tr><td>U+24FF <td> ⓿ <td> NEGATIVE CIRCLED DIGIT ZERO
- <tr><td>U+1F110–U+1F129 <td> 🄐–🄩 <td> PARENTHESIZED LATIN CAPITAL LETTER A – Z
- <tr><td>U+249C–U+24B5 <td> ⒜–⒵ <td> PARENTHESIZED LATIN SMALL LETTER A – Z
- <tr><td>U+24B6–U+24E9 <td> Ⓐ –ⓩ <td> CIRCLED LATIN CAPITAL LETTER A – SMALL LETTER Z
- </tbody>
-
- <p class="issue">Any errors? Any other non-ambiguous orientations to add here?</p>
-
- <p>Characters belonging to categories other than punctuation and symbols
- are discussed in <a href="#vertical-typesetting">Vertical Typesetting</a>.
-
--->
-
<h2 class="no-num" id="script-orientations">Appendix B:
Bi-orientational Transformations</h2>
Received on Tuesday, 10 May 2011 19:42:06 UTC