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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/212271">212271</a></dd>
<dt>Author</dt> <dd>zalan@apple.com</dd>
<dt>Date</dt> <dd>2017-02-13 18:20:50 -0800 (Mon, 13 Feb 2017)</dd>
</dl>
<h3>Log Message</h3>
<pre>Simple line layout: Do not measure runs with trailing whitespace when kerning and ligatures are off.
https://bugs.webkit.org/show_bug.cgi?id=168247
<rdar://problem/30497288>
Reviewed by Antti Koivisto.
The width of the run is supposed to be the same with or without the trailing whitespace.
Covered by performance test.
* rendering/SimpleLineLayoutTextFragmentIterator.cpp:
(WebCore::SimpleLineLayout::TextFragmentIterator::Style::Style):
(WebCore::SimpleLineLayout::TextFragmentIterator::textWidth):
* rendering/SimpleLineLayoutTextFragmentIterator.h:</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCorerenderingSimpleLineLayoutTextFragmentIteratorcpp">trunk/Source/WebCore/rendering/SimpleLineLayoutTextFragmentIterator.cpp</a></li>
<li><a href="#trunkSourceWebCorerenderingSimpleLineLayoutTextFragmentIteratorh">trunk/Source/WebCore/rendering/SimpleLineLayoutTextFragmentIterator.h</a></li>
</ul>
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<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (212270 => 212271)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog 2017-02-14 02:11:09 UTC (rev 212270)
+++ trunk/Source/WebCore/ChangeLog 2017-02-14 02:20:50 UTC (rev 212271)
</span><span class="lines">@@ -1,3 +1,20 @@
</span><ins>+2017-02-13 Zalan Bujtas <zalan@apple.com>
+
+ Simple line layout: Do not measure runs with trailing whitespace when kerning and ligatures are off.
+ https://bugs.webkit.org/show_bug.cgi?id=168247
+ <rdar://problem/30497288>
+
+ Reviewed by Antti Koivisto.
+
+ The width of the run is supposed to be the same with or without the trailing whitespace.
+
+ Covered by performance test.
+
+ * rendering/SimpleLineLayoutTextFragmentIterator.cpp:
+ (WebCore::SimpleLineLayout::TextFragmentIterator::Style::Style):
+ (WebCore::SimpleLineLayout::TextFragmentIterator::textWidth):
+ * rendering/SimpleLineLayoutTextFragmentIterator.h:
+
</ins><span class="cx"> 2017-02-13 Karim H <karim@karhm.com>
</span><span class="cx">
</span><span class="cx"> Added the other missing BSTR roles tag names.
</span></span></pre></div>
<a id="trunkSourceWebCorerenderingSimpleLineLayoutTextFragmentIteratorcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/rendering/SimpleLineLayoutTextFragmentIterator.cpp (212270 => 212271)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/rendering/SimpleLineLayoutTextFragmentIterator.cpp 2017-02-14 02:11:09 UTC (rev 212270)
+++ trunk/Source/WebCore/rendering/SimpleLineLayoutTextFragmentIterator.cpp 2017-02-14 02:20:50 UTC (rev 212271)
</span><span class="lines">@@ -37,6 +37,7 @@
</span><span class="cx"> TextFragmentIterator::Style::Style(const RenderStyle& style, bool useSimplifiedTextMeasuring)
</span><span class="cx"> : font(style.fontCascade())
</span><span class="cx"> , textAlign(style.textAlign())
</span><ins>+ , hasKerningOrLigatures(font.enableKerning() || font.requiresShaping())
</ins><span class="cx"> , collapseWhitespace(style.collapseWhiteSpace())
</span><span class="cx"> , preserveNewline(style.preserveNewline())
</span><span class="cx"> , wrapLines(style.autoWrap())
</span><span class="lines">@@ -244,7 +245,8 @@
</span><span class="cx"> if (m_style.font.isFixedPitch())
</span><span class="cx"> return downcast<RenderText>(segment.renderer).width(segmentFrom, segmentTo - segmentFrom, m_style.font, xPosition, nullptr, nullptr);
</span><span class="cx">
</span><del>- bool measureWithEndSpace = m_style.collapseWhitespace && segmentTo < segment.text.length() && segment.text[segmentTo] == ' ';
</del><ins>+ bool measureWithEndSpace = m_style.hasKerningOrLigatures && m_style.collapseWhitespace
+ && segmentTo < segment.text.length() && segment.text[segmentTo] == ' ';
</ins><span class="cx"> if (measureWithEndSpace)
</span><span class="cx"> ++segmentTo;
</span><span class="cx"> float width = 0;
</span></span></pre></div>
<a id="trunkSourceWebCorerenderingSimpleLineLayoutTextFragmentIteratorh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/rendering/SimpleLineLayoutTextFragmentIterator.h (212270 => 212271)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/rendering/SimpleLineLayoutTextFragmentIterator.h 2017-02-14 02:11:09 UTC (rev 212270)
+++ trunk/Source/WebCore/rendering/SimpleLineLayoutTextFragmentIterator.h 2017-02-14 02:20:50 UTC (rev 212271)
</span><span class="lines">@@ -109,6 +109,7 @@
</span><span class="cx">
</span><span class="cx"> const FontCascade& font;
</span><span class="cx"> ETextAlign textAlign;
</span><ins>+ bool hasKerningOrLigatures;
</ins><span class="cx"> bool collapseWhitespace;
</span><span class="cx"> bool preserveNewline;
</span><span class="cx"> bool wrapLines;
</span></span></pre>
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