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Added informative note on using tts:shear instead of italic #514

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merged 5 commits into from
Dec 22, 2019
Merged

Added informative note on using tts:shear instead of italic #514

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473f045
Added informative note on using tts:shear instead of italic (#495)
palemieux Dec 6, 2019
d5a5677
Address review comments
palemieux Dec 6, 2019
077d094
Merge branch 'master' into issues/0495-shear-recommendation
palemieux Dec 22, 2019
2ea2efc
Remove unused reference
palemieux Dec 22, 2019
4fc0655
Fix comma
palemieux Dec 22, 2019
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24 changes: 20 additions & 4 deletions imsc1/spec/ttml-ww-profiles.html
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Original file line number Diff line number Diff line change
Expand Up @@ -126,7 +126,10 @@
"publisher":"W3C",
"id":"ttml1-20181108",
"date":"8 November 2018"
}
},
"CSS2": {
aliasOf: "CSS2-20110607"
}
}
};
</script>
Expand Down Expand Up @@ -1056,7 +1059,8 @@ <h2>Supported Features and Extensions</h2>
<a href="https://www.w3.org/TR/2018/REC-ttml2-20181108/#feature-fontStyle-italic"><code>#fontStyle-italic</code></a>
</td>

<td><span class="permitted label">permitted</span></td>
<td><span class="permitted label">permitted</span><br>
<small>Section <a href="#text-italic-shear-oblique"></a> provides additional information.</small></td>

<td><span class="prohibited label">prohibited</span></td>
</tr>
Expand All @@ -1066,7 +1070,8 @@ <h2>Supported Features and Extensions</h2>
<a href="https://www.w3.org/TR/2018/REC-ttml2-20181108/#feature-fontStyle-oblique"><code>#fontStyle-oblique</code></a>
</td>

<td><span class="permitted label">permitted</span></td>
<td><span class="permitted label">permitted</span><br>
<small>Section <a href="#text-italic-shear-oblique"></a> provides additional information.</small></td>

<td><span class="prohibited label">prohibited</span></td>
</tr>
Expand Down Expand Up @@ -1601,7 +1606,8 @@ <h2>Supported Features and Extensions</h2>
<a href="https://www.w3.org/TR/2018/REC-ttml2-20181108/#feature-shear"><code>#shear</code></a>
</td>

<td><span class="permitted label">permitted</span></td>
<td><span class="permitted label">permitted</span><br>
<small>Section <a href="#text-italic-shear-oblique"></a> provides additional information.</small></td>

<td><span class="prohibited label">prohibited</span></td>
</tr>
Expand Down Expand Up @@ -3466,6 +3472,16 @@ <h4><code>ebutts:multiRowAlign</code></h4>
<p class='note'>In contrast to this specification, [[EBU-TT-D]] specifies that the attribute
<code>ebutts:multiRowAlign</code> is allowed only on the <code>style</code> element.</p>
</section>

<section id="text-italic-shear-oblique" class="informative">
<h4><code>#fontStyle-italic</code>, <code>#fontStyle-oblique</code> and <code>#shear</code></h4>

<p>As described at [[CSS2]], specifying <code>tts:fontStyle="italic"</code> selects an <em>italic</em>
typeface if one exists. If one does not exist, as is often the case with Japanese fonts, for example, an <em>oblique</em>
typeface is either selected or generated by slanting a normal font by an unspecified amount.</p>

<p>The author can specify an explicit slant angle using <code>tts:shear</code>.</p>
</section>
</section>
</section>

Expand Down