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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/203640">203640</a></dd>
<dt>Author</dt> <dd>commit-queue@webkit.org</dd>
<dt>Date</dt> <dd>2016-07-23 01:39:02 -0700 (Sat, 23 Jul 2016)</dd>
</dl>
<h3>Log Message</h3>
<pre>Reset font-style on the <math> element
https://bugs.webkit.org/show_bug.cgi?id=160074
Patch by Frederic Wang <fwang@igalia.com> on 2016-07-23
Reviewed by Darin Adler.
Source/WebCore:
Mathematical formulas with italic font-style render poorly (slanted operators, mathvariant
italic etc). We align on Gecko and make the user agent stylesheet reset the font-style to
'normal' by default. This addresses the concrete use case of formula inside theorem or
proposition statements, which are often written in italic.
Test: mathml/presentation/math-font-style.html
* css/mathml.css:
(math): Reset the font-style to normal.
LayoutTests:
* mathml/presentation/math-font-style-expected.html: Added.
* mathml/presentation/math-font-style.html: Added.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkLayoutTestsChangeLog">trunk/LayoutTests/ChangeLog</a></li>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCorecssmathmlcss">trunk/Source/WebCore/css/mathml.css</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li><a href="#trunkLayoutTestsmathmlpresentationmathfontstyleexpectedhtml">trunk/LayoutTests/mathml/presentation/math-font-style-expected.html</a></li>
<li><a href="#trunkLayoutTestsmathmlpresentationmathfontstylehtml">trunk/LayoutTests/mathml/presentation/math-font-style.html</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkLayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/ChangeLog (203639 => 203640)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/ChangeLog 2016-07-23 08:19:57 UTC (rev 203639)
+++ trunk/LayoutTests/ChangeLog 2016-07-23 08:39:02 UTC (rev 203640)
</span><span class="lines">@@ -1,5 +1,15 @@
</span><span class="cx"> 2016-07-23 Frederic Wang <fwang@igalia.com>
</span><span class="cx">
</span><ins>+ Reset font-style on the <math> element
+ https://bugs.webkit.org/show_bug.cgi?id=160074
+
+ Reviewed by Darin Adler.
+
+ * mathml/presentation/math-font-style-expected.html: Added.
+ * mathml/presentation/math-font-style.html: Added.
+
+2016-07-23 Frederic Wang <fwang@igalia.com>
+
</ins><span class="cx"> [MathML] PaintInfo state not properly restored after applyTransform.
</span><span class="cx"> https://bugs.webkit.org/show_bug.cgi?id=160077
</span><span class="cx">
</span></span></pre></div>
<a id="trunkLayoutTestsmathmlpresentationmathfontstyleexpectedhtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/mathml/presentation/math-font-style-expected.html (0 => 203640)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/mathml/presentation/math-font-style-expected.html (rev 0)
+++ trunk/LayoutTests/mathml/presentation/math-font-style-expected.html 2016-07-23 08:39:02 UTC (rev 203640)
</span><span class="lines">@@ -0,0 +1,29 @@
</span><ins>+<!DOCTYPE html>
+<html>
+ <head>
+ <title>math font-style</title>
+ <meta charset="utf-8"/>
+ <style type="text/css">
+ .num_theorem { font-style: italic; }
+ math { font-style: normal; }
+ </style>
+ </head>
+ <body>
+
+ <p>The italic style of the theorem paragraph should not be applied to the math tag.</p>
+
+ <div class="num_theorem">
+ <p><span class="theorem_label">Theorem</span><span>. </span>Let <math class="maruku-mathml" display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>f</mi><mo>:</mo><mi>Δ</mi><mo>⟶</mo><mi>Δ</mi><mo>,</mo></mrow><annotation encoding="application/x-tex">f : \Delta \longrightarrow \Delta,</annotation></semantics></math> where <math class="maruku-mathml" display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>Δ</mi><mo>=</mo><mo stretchy="false">{</mo><mi>z</mi><mo>∈</mo><mi>ℂ</mi><mo>:</mo><mo stretchy="false">|</mo><mi>z</mi><mo stretchy=&qu
ot;false">|</mo><mo>&lt;</mo><mn>1</mn><mo stretchy="false">}</mo></mrow><annotation encoding="application/x-tex">\Delta=\{z\in\mathbb{C}: \vert z \vert \lt 1\}</annotation></semantics></math>, be analytic with <math class="maruku-mathml" display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>a</mi><mo>∈</mo><mi>Δ</mi></mrow><annotation encoding="application/x-tex">a \in \Delta</annotation></semantics></math>. Then</p>
+<div class="maruku-equation"><math class="maruku-mathml" display="block" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mrow><mo>|</mo><mfrac><mrow><mi>f</mi><mo stretchy="false">(</mo><mi>z</mi><mo stretchy="false">)</mo><mo>−</mo><mi>f</mi><mo stretchy="false">(</mo><mi>a</mi><mo stretchy="false">)</mo></mrow><mrow><mn>1</mn><mo>−</mo><mover><mrow><mi>f</mi><mo stretchy="false">(</mo><mi>a</mi><mo stretchy="false">)</mo></mrow><mo>¯</mo></mover><mi>f</mi><mo stretchy="false">(</mo><mi>z</mi><mo stretchy="false">)</m
o></mrow></mfrac><mo>|</mo></mrow><mo>≤</mo><mrow><mo>|</mo><mfrac><mrow><mi>z</mi><mo>−</mo><mi>a</mi></mrow><mrow><mn>1</mn><mo>−</mo><mover><mi>a</mi><mo>¯</mo></mover><mi>z</mi></mrow></mfrac><mo>|</mo></mrow></mrow><annotation encoding="application/x-tex">
+\left\vert\frac{f(z)-f(a)}{1-\overline{f(a)}f(z)}\right\vert\le \left\vert\frac{z-a}{1-\overline{a}z}\right\vert
+
+</annotation></semantics></math></div>
+<p>for all <math class="maruku-mathml" display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mo stretchy="false">|</mo><mi>z</mi><mo stretchy="false">|</mo><mo>≤</mo><mn>1</mn></mrow><annotation encoding="application/x-tex">\vert z \vert \le 1</annotation></semantics></math> and</p>
+<div class="maruku-equation"><math class="maruku-mathml" display="block" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mfrac><mrow><mo stretchy="false">|</mo><mi>f</mi><mo>′</mo><mo stretchy="false">(</mo><mi>a</mi><mo stretchy="false">)</mo><mo stretchy="false">|</mo></mrow><mrow><mn>1</mn><mo>−</mo><mo stretchy="false">|</mo><mi>f</mi><mo stretchy="false">(</mo><mi>a</mi><mo stretchy="false">)</mo><msup><mo stretchy="false">|</mo> <mn>2</mn></msup></mrow></mfrac><mo>≤</mo><mfrac><mn>1</mn><mrow><mn>1</mn><mo>−</mo>
<mo stretchy="false">|</mo><mi>a</mi><msup><mo stretchy="false">|</mo> <mn>2</mn></msup></mrow></mfrac><mo>.</mo></mrow><annotation encoding="application/x-tex">
+\frac{\vert f'(a)\vert}{1-\vert f(a)\vert^2}\le \frac{1}{1-\vert a \vert^2}.
+
+</annotation></semantics></math></div>
+<p>Furthermore, equality holds iff <math class="maruku-mathml" display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>f</mi></mrow><annotation encoding="application/x-tex">f</annotation></semantics></math> realizes a conformal mapping of <math class="maruku-mathml" display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>Δ</mi></mrow><annotation encoding="application/x-tex">\Delta</annotation></semantics></math> onto itself.</p>
+</div>
+ </body>
+</html>
</ins></span></pre></div>
<a id="trunkLayoutTestsmathmlpresentationmathfontstylehtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/mathml/presentation/math-font-style.html (0 => 203640)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/mathml/presentation/math-font-style.html (rev 0)
+++ trunk/LayoutTests/mathml/presentation/math-font-style.html 2016-07-23 08:39:02 UTC (rev 203640)
</span><span class="lines">@@ -0,0 +1,28 @@
</span><ins>+<!DOCTYPE html>
+<html>
+ <head>
+ <title>math font-style</title>
+ <meta charset="utf-8"/>
+ <style type="text/css">
+ .num_theorem { font-style: italic; }
+ </style>
+ </head>
+ <body>
+
+ <p>The italic style of the theorem paragraph should not be applied to the math tag.</p>
+
+ <div class="num_theorem">
+ <p><span class="theorem_label">Theorem</span><span>. </span>Let <math class="maruku-mathml" display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>f</mi><mo>:</mo><mi>Δ</mi><mo>⟶</mo><mi>Δ</mi><mo>,</mo></mrow><annotation encoding="application/x-tex">f : \Delta \longrightarrow \Delta,</annotation></semantics></math> where <math class="maruku-mathml" display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>Δ</mi><mo>=</mo><mo stretchy="false">{</mo><mi>z</mi><mo>∈</mo><mi>ℂ</mi><mo>:</mo><mo stretchy="false">|</mo><mi>z</mi><mo stretchy=&qu
ot;false">|</mo><mo>&lt;</mo><mn>1</mn><mo stretchy="false">}</mo></mrow><annotation encoding="application/x-tex">\Delta=\{z\in\mathbb{C}: \vert z \vert \lt 1\}</annotation></semantics></math>, be analytic with <math class="maruku-mathml" display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>a</mi><mo>∈</mo><mi>Δ</mi></mrow><annotation encoding="application/x-tex">a \in \Delta</annotation></semantics></math>. Then</p>
+<div class="maruku-equation"><math class="maruku-mathml" display="block" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mrow><mo>|</mo><mfrac><mrow><mi>f</mi><mo stretchy="false">(</mo><mi>z</mi><mo stretchy="false">)</mo><mo>−</mo><mi>f</mi><mo stretchy="false">(</mo><mi>a</mi><mo stretchy="false">)</mo></mrow><mrow><mn>1</mn><mo>−</mo><mover><mrow><mi>f</mi><mo stretchy="false">(</mo><mi>a</mi><mo stretchy="false">)</mo></mrow><mo>¯</mo></mover><mi>f</mi><mo stretchy="false">(</mo><mi>z</mi><mo stretchy="false">)</m
o></mrow></mfrac><mo>|</mo></mrow><mo>≤</mo><mrow><mo>|</mo><mfrac><mrow><mi>z</mi><mo>−</mo><mi>a</mi></mrow><mrow><mn>1</mn><mo>−</mo><mover><mi>a</mi><mo>¯</mo></mover><mi>z</mi></mrow></mfrac><mo>|</mo></mrow></mrow><annotation encoding="application/x-tex">
+\left\vert\frac{f(z)-f(a)}{1-\overline{f(a)}f(z)}\right\vert\le \left\vert\frac{z-a}{1-\overline{a}z}\right\vert
+
+</annotation></semantics></math></div>
+<p>for all <math class="maruku-mathml" display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mo stretchy="false">|</mo><mi>z</mi><mo stretchy="false">|</mo><mo>≤</mo><mn>1</mn></mrow><annotation encoding="application/x-tex">\vert z \vert \le 1</annotation></semantics></math> and</p>
+<div class="maruku-equation"><math class="maruku-mathml" display="block" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mfrac><mrow><mo stretchy="false">|</mo><mi>f</mi><mo>′</mo><mo stretchy="false">(</mo><mi>a</mi><mo stretchy="false">)</mo><mo stretchy="false">|</mo></mrow><mrow><mn>1</mn><mo>−</mo><mo stretchy="false">|</mo><mi>f</mi><mo stretchy="false">(</mo><mi>a</mi><mo stretchy="false">)</mo><msup><mo stretchy="false">|</mo> <mn>2</mn></msup></mrow></mfrac><mo>≤</mo><mfrac><mn>1</mn><mrow><mn>1</mn><mo>−</mo>
<mo stretchy="false">|</mo><mi>a</mi><msup><mo stretchy="false">|</mo> <mn>2</mn></msup></mrow></mfrac><mo>.</mo></mrow><annotation encoding="application/x-tex">
+\frac{\vert f'(a)\vert}{1-\vert f(a)\vert^2}\le \frac{1}{1-\vert a \vert^2}.
+
+</annotation></semantics></math></div>
+<p>Furthermore, equality holds iff <math class="maruku-mathml" display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>f</mi></mrow><annotation encoding="application/x-tex">f</annotation></semantics></math> realizes a conformal mapping of <math class="maruku-mathml" display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>Δ</mi></mrow><annotation encoding="application/x-tex">\Delta</annotation></semantics></math> onto itself.</p>
+</div>
+ </body>
+</html>
</ins></span></pre></div>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (203639 => 203640)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog 2016-07-23 08:19:57 UTC (rev 203639)
+++ trunk/Source/WebCore/ChangeLog 2016-07-23 08:39:02 UTC (rev 203640)
</span><span class="lines">@@ -1,5 +1,22 @@
</span><span class="cx"> 2016-07-23 Frederic Wang <fwang@igalia.com>
</span><span class="cx">
</span><ins>+ Reset font-style on the <math> element
+ https://bugs.webkit.org/show_bug.cgi?id=160074
+
+ Reviewed by Darin Adler.
+
+ Mathematical formulas with italic font-style render poorly (slanted operators, mathvariant
+ italic etc). We align on Gecko and make the user agent stylesheet reset the font-style to
+ 'normal' by default. This addresses the concrete use case of formula inside theorem or
+ proposition statements, which are often written in italic.
+
+ Test: mathml/presentation/math-font-style.html
+
+ * css/mathml.css:
+ (math): Reset the font-style to normal.
+
+2016-07-23 Frederic Wang <fwang@igalia.com>
+
</ins><span class="cx"> [MathML] PaintInfo state is not properly restored after applyTransform.
</span><span class="cx"> https://bugs.webkit.org/show_bug.cgi?id=160077
</span><span class="cx">
</span></span></pre></div>
<a id="trunkSourceWebCorecssmathmlcss"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/css/mathml.css (203639 => 203640)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/css/mathml.css 2016-07-23 08:19:57 UTC (rev 203639)
+++ trunk/Source/WebCore/css/mathml.css 2016-07-23 08:39:02 UTC (rev 203640)
</span><span class="lines">@@ -42,6 +42,12 @@
</span><span class="cx"> */
</span><span class="cx"> direction: ltr;
</span><span class="cx">
</span><ins>+ /*
+ Mathematical formula inside an italic paragraph should not inherit the font-style as this gives
+ poor rendering and is confusing with the mathvariant italic.
+ */
+ font-style: normal;
+
</ins><span class="cx"> /* Fonts with appropriate Unicode coverage and OpenType features are required for good math
</span><span class="cx"> rendering. These requirements as well as the up-to-date list of known math fonts to fulfill
</span><span class="cx"> these requirements are listed on http://trac.webkit.org/wiki/MathML/Fonts.
</span></span></pre>
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