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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/169400">169400</a></dd>
<dt>Author</dt> <dd>mmaxfield@apple.com</dd>
<dt>Date</dt> <dd>2014-05-27 14:34:38 -0700 (Tue, 27 May 2014)</dd>
</dl>
<h3>Log Message</h3>
<pre>SVG TextRuns do not always get RenderingContexts
https://bugs.webkit.org/show_bug.cgi?id=133198
Reviewed by Simon Fraser.
Source/WebCore:
There were a couple places in RenderListMarker and RenderMenuList that were
implicitly creating TextRuns by passing a String to a function which
expected a TextRun. Because TextRun has a constructor which takes a single
String and isn't marked explicit, TextRuns were being created without
any of the associated code that initializes the TextRun (such as creating
a RenderingContext if necessary).
This patch marks the aforementioned constructor as "explicit" to discourage
such behavior in the future.
Test: svg/custom/list-items-with-svg-font-family.html
* platform/graphics/TextRun.h:
(WebCore::TextRun::TextRun): Mark constructors as explicit.
* rendering/RenderListMarker.cpp:
(WebCore::RenderListMarker::computePreferredLogicalWidths): Call
RenderBlock::constructTextRun.
(WebCore::RenderListMarker::getRelativeMarkerRect): Ditto.
* rendering/RenderMenuList.cpp:
(RenderMenuList::updateOptionsWidth): Ditto.
LayoutTests:
See per-file comments.
* svg/custom/list-items-with-svg-font-family-expected.txt: Added.
* svg/custom/list-items-with-svg-font-family.html: Added. Make sure there is
no crash when styling list elements with SVG fonts.</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="#trunkSourceWebCoreplatformgraphicsTextRunh">trunk/Source/WebCore/platform/graphics/TextRun.h</a></li>
<li><a href="#trunkSourceWebCorerenderingRenderListMarkercpp">trunk/Source/WebCore/rendering/RenderListMarker.cpp</a></li>
<li><a href="#trunkSourceWebCorerenderingRenderMenuListcpp">trunk/Source/WebCore/rendering/RenderMenuList.cpp</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li><a href="#trunkLayoutTestssvgcustomlistitemswithsvgfontfamilyexpectedtxt">trunk/LayoutTests/svg/custom/list-items-with-svg-font-family-expected.txt</a></li>
<li><a href="#trunkLayoutTestssvgcustomlistitemswithsvgfontfamilyhtml">trunk/LayoutTests/svg/custom/list-items-with-svg-font-family.html</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkLayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/ChangeLog (169399 => 169400)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/ChangeLog        2014-05-27 21:14:20 UTC (rev 169399)
+++ trunk/LayoutTests/ChangeLog        2014-05-27 21:34:38 UTC (rev 169400)
</span><span class="lines">@@ -1,3 +1,16 @@
</span><ins>+2014-05-27 Myles C. Maxfield <mmaxfield@apple.com>
+
+ SVG TextRuns do not always get RenderingContexts
+ https://bugs.webkit.org/show_bug.cgi?id=133198
+
+ Reviewed by Simon Fraser.
+
+ See per-file comments.
+
+ * svg/custom/list-items-with-svg-font-family-expected.txt: Added.
+ * svg/custom/list-items-with-svg-font-family.html: Added. Make sure there is
+ no crash when styling list elements with SVG fonts.
+
</ins><span class="cx"> 2014-05-23 Myles C. Maxfield <mmaxfield@apple.com>
</span><span class="cx">
</span><span class="cx"> Caret's screen position does not update during an overflow scroll
</span></span></pre></div>
<a id="trunkLayoutTestssvgcustomlistitemswithsvgfontfamilyexpectedtxt"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/svg/custom/list-items-with-svg-font-family-expected.txt (0 => 169400)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/svg/custom/list-items-with-svg-font-family-expected.txt         (rev 0)
+++ trunk/LayoutTests/svg/custom/list-items-with-svg-font-family-expected.txt        2014-05-27 21:34:38 UTC (rev 169400)
</span><span class="lines">@@ -0,0 +1,5 @@
</span><ins>+This test makes sure that styling list elements with an SVG font does not cause a crash.
+This test is successful if there is no crash.
+element
+element
+element
</ins></span></pre></div>
<a id="trunkLayoutTestssvgcustomlistitemswithsvgfontfamilyhtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/svg/custom/list-items-with-svg-font-family.html (0 => 169400)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/svg/custom/list-items-with-svg-font-family.html         (rev 0)
+++ trunk/LayoutTests/svg/custom/list-items-with-svg-font-family.html        2014-05-27 21:34:38 UTC (rev 169400)
</span><span class="lines">@@ -0,0 +1,28 @@
</span><ins>+<style>
+@font-face {
+ font-family: 'SVGraffiti';
+ src: url("resources/graffiti.svg#SVGraffiti") format(svg)
+}
+li.a {
+ font-size: 30px;
+ font-family: SVGraffiti;
+ list-style-type: lower-roman;
+}
+li.b {
+ font-size: 30px;
+ font-family: SVGraffiti;
+ list-style-type: asterisks;
+}
+</style>
+This test makes sure that styling list elements with an SVG font does not cause a crash.
+<br>
+This test is successful if there is no crash.
+<ol>
+<li class="a">element</li>
+<li class="a">element</li>
+<li class="b">element</li>
+</ol>
+<script>
+if (window.testRunner)
+ testRunner.dumpAsText();
+</script>
</ins></span></pre></div>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (169399 => 169400)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog        2014-05-27 21:14:20 UTC (rev 169399)
+++ trunk/Source/WebCore/ChangeLog        2014-05-27 21:34:38 UTC (rev 169400)
</span><span class="lines">@@ -1,3 +1,31 @@
</span><ins>+2014-05-27 Myles C. Maxfield <mmaxfield@apple.com>
+
+ SVG TextRuns do not always get RenderingContexts
+ https://bugs.webkit.org/show_bug.cgi?id=133198
+
+ Reviewed by Simon Fraser.
+
+ There were a couple places in RenderListMarker and RenderMenuList that were
+ implicitly creating TextRuns by passing a String to a function which
+ expected a TextRun. Because TextRun has a constructor which takes a single
+ String and isn't marked explicit, TextRuns were being created without
+ any of the associated code that initializes the TextRun (such as creating
+ a RenderingContext if necessary).
+
+ This patch marks the aforementioned constructor as "explicit" to discourage
+ such behavior in the future.
+
+ Test: svg/custom/list-items-with-svg-font-family.html
+
+ * platform/graphics/TextRun.h:
+ (WebCore::TextRun::TextRun): Mark constructors as explicit.
+ * rendering/RenderListMarker.cpp:
+ (WebCore::RenderListMarker::computePreferredLogicalWidths): Call
+ RenderBlock::constructTextRun.
+ (WebCore::RenderListMarker::getRelativeMarkerRect): Ditto.
+ * rendering/RenderMenuList.cpp:
+ (RenderMenuList::updateOptionsWidth): Ditto.
+
</ins><span class="cx"> 2014-05-23 Myles C. Maxfield <mmaxfield@apple.com>
</span><span class="cx">
</span><span class="cx"> Caret's screen position does not update during an overflow scroll
</span></span></pre></div>
<a id="trunkSourceWebCoreplatformgraphicsTextRunh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/platform/graphics/TextRun.h (169399 => 169400)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/graphics/TextRun.h        2014-05-27 21:14:20 UTC (rev 169399)
+++ trunk/Source/WebCore/platform/graphics/TextRun.h        2014-05-27 21:34:38 UTC (rev 169400)
</span><span class="lines">@@ -101,7 +101,7 @@
</span><span class="cx"> m_data.characters16 = c;
</span><span class="cx"> }
</span><span class="cx">
</span><del>- TextRun(const String& s, float xpos = 0, float expansion = 0, ExpansionBehavior expansionBehavior = AllowTrailingExpansion | ForbidLeadingExpansion, TextDirection direction = LTR, bool directionalOverride = false, bool characterScanForCodePath = true, RoundingHacks roundingHacks = RunRounding | WordRounding)
</del><ins>+ explicit TextRun(const String& s, float xpos = 0, float expansion = 0, ExpansionBehavior expansionBehavior = AllowTrailingExpansion | ForbidLeadingExpansion, TextDirection direction = LTR, bool directionalOverride = false, bool characterScanForCodePath = true, RoundingHacks roundingHacks = RunRounding | WordRounding)
</ins><span class="cx"> : m_charactersLength(s.length())
</span><span class="cx"> , m_len(s.length())
</span><span class="cx"> , m_xpos(xpos)
</span><span class="lines">@@ -126,7 +126,7 @@
</span><span class="cx"> }
</span><span class="cx"> }
</span><span class="cx">
</span><del>- TextRun(StringView s, float xpos = 0, float expansion = 0, ExpansionBehavior expansionBehavior = AllowTrailingExpansion | ForbidLeadingExpansion, TextDirection direction = LTR, bool directionalOverride = false, bool characterScanForCodePath = true, RoundingHacks roundingHacks = RunRounding | WordRounding)
</del><ins>+ explicit TextRun(StringView s, float xpos = 0, float expansion = 0, ExpansionBehavior expansionBehavior = AllowTrailingExpansion | ForbidLeadingExpansion, TextDirection direction = LTR, bool directionalOverride = false, bool characterScanForCodePath = true, RoundingHacks roundingHacks = RunRounding | WordRounding)
</ins><span class="cx"> : m_charactersLength(s.length())
</span><span class="cx"> , m_len(s.length())
</span><span class="cx"> , m_xpos(xpos)
</span></span></pre></div>
<a id="trunkSourceWebCorerenderingRenderListMarkercpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/rendering/RenderListMarker.cpp (169399 => 169400)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/rendering/RenderListMarker.cpp        2014-05-27 21:14:20 UTC (rev 169399)
+++ trunk/Source/WebCore/rendering/RenderListMarker.cpp        2014-05-27 21:34:38 UTC (rev 169400)
</span><span class="lines">@@ -1536,8 +1536,10 @@
</span><span class="cx"> case NoneListStyle:
</span><span class="cx"> break;
</span><span class="cx"> case Asterisks:
</span><del>- case Footnotes:
- logicalWidth = font.width(m_text); // no suffix for these types
</del><ins>+ case Footnotes: {
+ TextRun run = RenderBlock::constructTextRun(this, font, m_text, style(), TextRun::AllowTrailingExpansion | TextRun::ForbidLeadingExpansion, DefaultTextRunFlags);
+ logicalWidth = font.width(run); // no suffix for these types
+ }
</ins><span class="cx"> break;
</span><span class="cx"> case Circle:
</span><span class="cx"> case Disc:
</span><span class="lines">@@ -1622,7 +1624,8 @@
</span><span class="cx"> if (m_text.isEmpty())
</span><span class="cx"> logicalWidth = 0;
</span><span class="cx"> else {
</span><del>- LayoutUnit itemWidth = font.width(m_text);
</del><ins>+ TextRun run = RenderBlock::constructTextRun(this, font, m_text, style(), TextRun::AllowTrailingExpansion | TextRun::ForbidLeadingExpansion, DefaultTextRunFlags);
+ LayoutUnit itemWidth = font.width(run);
</ins><span class="cx"> UChar suffixSpace[2] = { listMarkerSuffix(type, m_listItem.value()), ' ' };
</span><span class="cx"> LayoutUnit suffixSpaceWidth = font.width(RenderBlock::constructTextRun(this, font, suffixSpace, 2, style()));
</span><span class="cx"> logicalWidth = itemWidth + suffixSpaceWidth;
</span><span class="lines">@@ -1754,7 +1757,8 @@
</span><span class="cx"> case Asterisks:
</span><span class="cx"> case Footnotes: {
</span><span class="cx"> const Font& font = style().font();
</span><del>- relativeRect = IntRect(0, 0, font.width(m_text), font.fontMetrics().height());
</del><ins>+ TextRun run = RenderBlock::constructTextRun(this, font, m_text, style(), TextRun::AllowTrailingExpansion | TextRun::ForbidLeadingExpansion, DefaultTextRunFlags);
+ relativeRect = IntRect(0, 0, font.width(run), font.fontMetrics().height());
</ins><span class="cx"> break;
</span><span class="cx"> }
</span><span class="cx"> case Disc:
</span><span class="lines">@@ -1847,7 +1851,8 @@
</span><span class="cx"> if (m_text.isEmpty())
</span><span class="cx"> return IntRect();
</span><span class="cx"> const Font& font = style().font();
</span><del>- int itemWidth = font.width(m_text);
</del><ins>+ TextRun run = RenderBlock::constructTextRun(this, font, m_text, style(), TextRun::AllowTrailingExpansion | TextRun::ForbidLeadingExpansion, DefaultTextRunFlags);
+ int itemWidth = font.width(run);
</ins><span class="cx"> UChar suffixSpace[2] = { listMarkerSuffix(type, m_listItem.value()), ' ' };
</span><span class="cx"> int suffixSpaceWidth = font.width(RenderBlock::constructTextRun(this, font, suffixSpace, 2, style()));
</span><span class="cx"> relativeRect = IntRect(0, 0, itemWidth + suffixSpaceWidth, font.fontMetrics().height());
</span></span></pre></div>
<a id="trunkSourceWebCorerenderingRenderMenuListcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/rendering/RenderMenuList.cpp (169399 => 169400)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/rendering/RenderMenuList.cpp        2014-05-27 21:14:20 UTC (rev 169399)
+++ trunk/Source/WebCore/rendering/RenderMenuList.cpp        2014-05-27 21:34:38 UTC (rev 169400)
</span><span class="lines">@@ -224,11 +224,17 @@
</span><span class="cx"> float optionWidth = 0;
</span><span class="cx"> if (RenderStyle* optionStyle = element->renderStyle())
</span><span class="cx"> optionWidth += minimumValueForLength(optionStyle->textIndent(), 0);
</span><del>- if (!text.isEmpty())
- optionWidth += style().font().width(text);
</del><ins>+ if (!text.isEmpty()) {
+ const Font& font = style().font();
+ TextRun run = RenderBlock::constructTextRun(this, font, text, style(), TextRun::AllowTrailingExpansion | TextRun::ForbidLeadingExpansion, DefaultTextRunFlags);
+ optionWidth += font.width(run);
+ }
</ins><span class="cx"> maxOptionWidth = std::max(maxOptionWidth, optionWidth);
</span><del>- } else if (!text.isEmpty())
- maxOptionWidth = std::max(maxOptionWidth, style().font().width(text));
</del><ins>+ } else if (!text.isEmpty()) {
+ const Font& font = style().font();
+ TextRun run = RenderBlock::constructTextRun(this, font, text, style(), TextRun::AllowTrailingExpansion | TextRun::ForbidLeadingExpansion, DefaultTextRunFlags);
+ maxOptionWidth = std::max(maxOptionWidth, font.width(run));
+ }
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> int width = static_cast<int>(ceilf(maxOptionWidth));
</span></span></pre>
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