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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/201516">201516</a></dd>
<dt>Author</dt> <dd>hyatt@apple.com</dd>
<dt>Date</dt> <dd>2016-05-31 11:42:17 -0700 (Tue, 31 May 2016)</dd>
</dl>

<h3>Log Message</h3>
<pre>REGRESSION (<a href="http://trac.webkit.org/projects/webkit/changeset/189567">r189567</a>): Elements with aspect ratios not handled correctly inside flexbox.
https://bugs.webkit.org/show_bug.cgi?id=158040

Reviewed by Zalan Bujtas.

Source/WebCore:

Added new tests in fast/flexbox.

* rendering/RenderFlexibleBox.cpp:
(WebCore::RenderFlexibleBox::clientLogicalBottomAfterRepositioning):
(WebCore::RenderFlexibleBox::hasOrthogonalFlow):
(WebCore::RenderFlexibleBox::mainAxisContentExtent):
(WebCore::RenderFlexibleBox::computeMainAxisExtentForChild):
(WebCore::RenderFlexibleBox::mainAxisBorderAndPaddingExtentForChild):
(WebCore::RenderFlexibleBox::mainAxisLengthIsDefinite):
(WebCore::RenderFlexibleBox::mainAxisScrollbarExtentForChild):
(WebCore::RenderFlexibleBox::prepareOrderIteratorAndMargins):
(WebCore::RenderFlexibleBox::crossAxisLengthIsDefinite):
(WebCore::RenderFlexibleBox::computeMainSizeFromAspectRatioUsing):
(WebCore::RenderFlexibleBox::adjustChildSizeForAspectRatioCrossAxisMinAndMax):
(WebCore::RenderFlexibleBox::useChildAspectRatio):
(WebCore::RenderFlexibleBox::adjustChildSizeForMinAndMax):
(WebCore::RenderFlexibleBox::resetAutoMarginsAndLogicalTopInCrossAxis):
(WebCore::RenderFlexibleBox::mainAxisOverflowForChild):
(WebCore::RenderFlexibleBox::mainAxisExtentIsDefinite): Deleted.
(WebCore::RenderFlexibleBox::mainAxisLengthIsIndefinite): Deleted.
* rendering/RenderFlexibleBox.h:
(WebCore::RenderFlexibleBox::isFlexibleBoxImpl):

LayoutTests:

* fast/flexbox/aspect-ratio-intrinsic-adjust-expected.html: Added.
* fast/flexbox/aspect-ratio-intrinsic-adjust.html: Added.
* fast/flexbox/resources/subjects_sm.png: 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="#trunkSourceWebCorerenderingRenderFlexibleBoxcpp">trunk/Source/WebCore/rendering/RenderFlexibleBox.cpp</a></li>
<li><a href="#trunkSourceWebCorerenderingRenderFlexibleBoxh">trunk/Source/WebCore/rendering/RenderFlexibleBox.h</a></li>
</ul>

<h3>Added Paths</h3>
<ul>
<li><a href="#trunkLayoutTestsfastflexboxaspectratiointrinsicadjustexpectedhtml">trunk/LayoutTests/fast/flexbox/aspect-ratio-intrinsic-adjust-expected.html</a></li>
<li><a href="#trunkLayoutTestsfastflexboxaspectratiointrinsicadjusthtml">trunk/LayoutTests/fast/flexbox/aspect-ratio-intrinsic-adjust.html</a></li>
<li><a href="#trunkLayoutTestsfastflexboxresourcessubjects_smpng">trunk/LayoutTests/fast/flexbox/resources/subjects_sm.png</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkLayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/ChangeLog (201515 => 201516)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/ChangeLog        2016-05-31 17:53:20 UTC (rev 201515)
+++ trunk/LayoutTests/ChangeLog        2016-05-31 18:42:17 UTC (rev 201516)
</span><span class="lines">@@ -1,3 +1,14 @@
</span><ins>+2016-05-31  Dave Hyatt  &lt;hyatt@apple.com&gt;
+
+        REGRESSION (r189567): Elements with aspect ratios not handled correctly inside flexbox.
+        https://bugs.webkit.org/show_bug.cgi?id=158040
+
+        Reviewed by Zalan Bujtas.
+
+        * fast/flexbox/aspect-ratio-intrinsic-adjust-expected.html: Added.
+        * fast/flexbox/aspect-ratio-intrinsic-adjust.html: Added.
+        * fast/flexbox/resources/subjects_sm.png: Added.
+
</ins><span class="cx"> 2016-05-25  Sergio Villar Senin  &lt;svillar@igalia.com&gt;
</span><span class="cx"> 
</span><span class="cx">         [css-grid] Empty grid without explicit tracks shouldn't have any size
</span></span></pre></div>
<a id="trunkLayoutTestsfastflexboxaspectratiointrinsicadjustexpectedhtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/fast/flexbox/aspect-ratio-intrinsic-adjust-expected.html (0 => 201516)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/fast/flexbox/aspect-ratio-intrinsic-adjust-expected.html                                (rev 0)
+++ trunk/LayoutTests/fast/flexbox/aspect-ratio-intrinsic-adjust-expected.html        2016-05-31 18:42:17 UTC (rev 201516)
</span><span class="lines">@@ -0,0 +1,47 @@
</span><ins>+&lt;!doctype html&gt;
+&lt;html lang=&quot;en&quot;&gt;
+
+&lt;head&gt;
+    &lt;meta charset=&quot;utf-8&quot; /&gt;
+    &lt;title&gt;img.weird-stretch&lt;/title&gt;
+    &lt;style&gt;
+    body {
+            width: 400px;
+            margin: 0 auto;
+    }
+    .weird-stretch-container {
+        float: right;
+        width: 400px;
+        height: 250px;
+        display: -webkit-flex;
+        display: -ms-flexbox;
+        display: flex;
+        -webkit-box-align: center;
+        -webkit-align-items: center;
+        -ms-flex-align: center;
+        align-items: center;
+        -webkit-box-pack: center;
+        -webkit-justify-content: center;
+        -ms-flex-pack: center;
+        justify-content: center
+    }
+    
+    &lt;/style&gt;
+&lt;/head&gt;
+
+&lt;body&gt;
+
+    &lt;div class=&quot;weird-stretch-container&quot;&gt;
+        &lt;img class=&quot;weird-stretch&quot; alt=&quot;&quot; src=&quot;resources/subjects_sm.png&quot; width=&quot;100px&quot; /&gt;
+    &lt;/div&gt;
+
+    &lt;div class=&quot;weird-stretch-container&quot;&gt;
+        &lt;img class=&quot;weird-stretch&quot; alt=&quot;&quot; src=&quot;resources/subjects_sm.png&quot; width=&quot;63px&quot; /&gt;
+    &lt;/div&gt;
+
+    &lt;div class=&quot;weird-stretch-container&quot;&gt;
+        &lt;img class=&quot;weird-stretch&quot; alt=&quot;&quot; src=&quot;resources/subjects_sm.png&quot; width=&quot;132px&quot; height=&quot;210px&quot; /&gt;
+    &lt;/div&gt;
+&lt;/body&gt;
+
+&lt;/html&gt;
</ins></span></pre></div>
<a id="trunkLayoutTestsfastflexboxaspectratiointrinsicadjusthtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/fast/flexbox/aspect-ratio-intrinsic-adjust.html (0 => 201516)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/fast/flexbox/aspect-ratio-intrinsic-adjust.html                                (rev 0)
+++ trunk/LayoutTests/fast/flexbox/aspect-ratio-intrinsic-adjust.html        2016-05-31 18:42:17 UTC (rev 201516)
</span><span class="lines">@@ -0,0 +1,51 @@
</span><ins>+&lt;!doctype html&gt;
+&lt;html lang=&quot;en&quot;&gt;
+
+&lt;head&gt;
+    &lt;meta charset=&quot;utf-8&quot; /&gt;
+    &lt;title&gt;img.weird-stretch&lt;/title&gt;
+    &lt;style&gt;
+    body {
+            width: 400px;
+            margin: 0 auto;
+    }
+    .weird-stretch-container {
+        float: right;
+        width: 400px;
+        height: 250px;
+        display: -webkit-flex;
+        display: -ms-flexbox;
+        display: flex;
+        -webkit-box-align: center;
+        -webkit-align-items: center;
+        -ms-flex-align: center;
+        align-items: center;
+        -webkit-box-pack: center;
+        -webkit-justify-content: center;
+        -ms-flex-pack: center;
+        justify-content: center
+    }
+    
+    img.weird-stretch {
+        max-width: 100%;
+        max-height: 100%
+    }
+    &lt;/style&gt;
+&lt;/head&gt;
+
+&lt;body&gt;
+
+    &lt;div class=&quot;weird-stretch-container&quot;&gt;
+        &lt;img class=&quot;weird-stretch&quot; alt=&quot;&quot; src=&quot;resources/subjects_sm.png&quot; width=&quot;100px&quot; /&gt;
+    &lt;/div&gt;
+
+    &lt;div class=&quot;weird-stretch-container&quot;&gt;
+        &lt;img class=&quot;weird-stretch&quot; alt=&quot;&quot; src=&quot;resources/subjects_sm.png&quot; height=&quot;100px&quot; /&gt;
+    &lt;/div&gt;
+
+    &lt;div class=&quot;weird-stretch-container&quot;&gt;
+        &lt;img class=&quot;weird-stretch&quot; alt=&quot;&quot; src=&quot;resources/subjects_sm.png&quot; width=&quot;132px&quot; height=&quot;210px&quot; /&gt;
+    &lt;/div&gt;
+&lt;/body&gt;
+
+&lt;/html&gt;
</ins></span></pre></div>
<a id="trunkLayoutTestsfastflexboxresourcessubjects_smpng"></a>
<div class="binary"><h4>Added: trunk/LayoutTests/fast/flexbox/resources/subjects_sm.png</h4>
<pre class="diff"><span>
<span class="cx">(Binary files differ)
</span></span></pre></div>
<span class="cx">Property changes on: trunk/LayoutTests/fast/flexbox/resources/subjects_sm.png
</span><span class="cx">___________________________________________________________________
</span><a id="svnmimetype"></a>
<div class="addfile"><h4>Added: svn:mime-type</h4></div>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (201515 => 201516)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog        2016-05-31 17:53:20 UTC (rev 201515)
+++ trunk/Source/WebCore/ChangeLog        2016-05-31 18:42:17 UTC (rev 201516)
</span><span class="lines">@@ -1,3 +1,33 @@
</span><ins>+2016-05-31  Dave Hyatt  &lt;hyatt@apple.com&gt;
+
+        REGRESSION (r189567): Elements with aspect ratios not handled correctly inside flexbox.
+        https://bugs.webkit.org/show_bug.cgi?id=158040
+
+        Reviewed by Zalan Bujtas.
+
+        Added new tests in fast/flexbox.
+
+        * rendering/RenderFlexibleBox.cpp:
+        (WebCore::RenderFlexibleBox::clientLogicalBottomAfterRepositioning):
+        (WebCore::RenderFlexibleBox::hasOrthogonalFlow):
+        (WebCore::RenderFlexibleBox::mainAxisContentExtent):
+        (WebCore::RenderFlexibleBox::computeMainAxisExtentForChild):
+        (WebCore::RenderFlexibleBox::mainAxisBorderAndPaddingExtentForChild):
+        (WebCore::RenderFlexibleBox::mainAxisLengthIsDefinite):
+        (WebCore::RenderFlexibleBox::mainAxisScrollbarExtentForChild):
+        (WebCore::RenderFlexibleBox::prepareOrderIteratorAndMargins):
+        (WebCore::RenderFlexibleBox::crossAxisLengthIsDefinite):
+        (WebCore::RenderFlexibleBox::computeMainSizeFromAspectRatioUsing):
+        (WebCore::RenderFlexibleBox::adjustChildSizeForAspectRatioCrossAxisMinAndMax):
+        (WebCore::RenderFlexibleBox::useChildAspectRatio):
+        (WebCore::RenderFlexibleBox::adjustChildSizeForMinAndMax):
+        (WebCore::RenderFlexibleBox::resetAutoMarginsAndLogicalTopInCrossAxis):
+        (WebCore::RenderFlexibleBox::mainAxisOverflowForChild):
+        (WebCore::RenderFlexibleBox::mainAxisExtentIsDefinite): Deleted.
+        (WebCore::RenderFlexibleBox::mainAxisLengthIsIndefinite): Deleted.
+        * rendering/RenderFlexibleBox.h:
+        (WebCore::RenderFlexibleBox::isFlexibleBoxImpl):
+
</ins><span class="cx"> 2016-05-31  Alex Christensen  &lt;achristensen@webkit.org&gt;
</span><span class="cx"> 
</span><span class="cx">         Build fix after r201482.
</span></span></pre></div>
<a id="trunkSourceWebCorerenderingRenderFlexibleBoxcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/rendering/RenderFlexibleBox.cpp (201515 => 201516)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/rendering/RenderFlexibleBox.cpp        2016-05-31 17:53:20 UTC (rev 201515)
+++ trunk/Source/WebCore/rendering/RenderFlexibleBox.cpp        2016-05-31 18:42:17 UTC (rev 201516)
</span><span class="lines">@@ -367,7 +367,7 @@
</span><span class="cx">     return std::max(clientLogicalBottom(), maxChildLogicalBottom);
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-bool RenderFlexibleBox::hasOrthogonalFlow(RenderBox&amp; child) const
</del><ins>+bool RenderFlexibleBox::hasOrthogonalFlow(const RenderBox&amp; child) const
</ins><span class="cx"> {
</span><span class="cx">     // FIXME: If the child is a flexbox, then we need to check isHorizontalFlow.
</span><span class="cx">     return isHorizontalFlow() != child.isHorizontalWritingMode();
</span><span class="lines">@@ -454,14 +454,14 @@
</span><span class="cx">     return contentLogicalWidth();
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-Optional&lt;LayoutUnit&gt; RenderFlexibleBox::computeMainAxisExtentForChild(RenderBox&amp; child, SizeType sizeType, const Length&amp; size)
</del><ins>+Optional&lt;LayoutUnit&gt; RenderFlexibleBox::computeMainAxisExtentForChild(const RenderBox&amp; child, SizeType sizeType, const Length&amp; size)
</ins><span class="cx"> {
</span><span class="cx">     // FIXME: This is wrong for orthogonal flows. It should use the flexbox's writing-mode, not the child's in order
</span><span class="cx">     // to figure out the logical height/width.
</span><span class="cx">     if (isColumnFlow()) {
</span><span class="cx">         // We don't have to check for &quot;auto&quot; here - computeContentLogicalHeight will just return Nullopt for that case anyway.
</span><span class="cx">         if (size.isIntrinsic())
</span><del>-            child.layoutIfNeeded();
</del><ins>+            const_cast&lt;RenderBox&amp;&gt;(child).layoutIfNeeded(); // FIXME: Should not need to do a layout here.
</ins><span class="cx">         return child.computeContentLogicalHeight(sizeType, size, child.logicalHeight() - child.borderAndPaddingLogicalHeight());
</span><span class="cx">     }
</span><span class="cx">     // FIXME: Figure out how this should work for regions and pass in the appropriate values.
</span><span class="lines">@@ -652,17 +652,16 @@
</span><span class="cx"> {
</span><span class="cx">     return isHorizontalFlow() ? child.horizontalBorderAndPaddingExtent() : child.verticalBorderAndPaddingExtent();
</span><span class="cx"> }
</span><del>-
-bool RenderFlexibleBox::mainAxisExtentIsDefinite() const
</del><ins>+    
+bool RenderFlexibleBox::mainAxisLengthIsDefinite(const RenderBox&amp; child, const Length&amp; flexBasis) const
</ins><span class="cx"> {
</span><del>-    return isColumnFlow() ? hasDefiniteLogicalHeight() : hasDefiniteLogicalWidth();
</del><ins>+    if (flexBasis.isAuto())
+        return false;
+    if (flexBasis.isPercentOrCalculated())
+        return isColumnFlow() ? bool(child.computePercentageLogicalHeight(flexBasis)) : hasDefiniteLogicalWidth();
+    return true;
</ins><span class="cx"> }
</span><span class="cx"> 
</span><del>-bool RenderFlexibleBox::mainAxisLengthIsIndefinite(const Length&amp; flexBasis) const
-{
-    return flexBasis.isAuto() || (flexBasis.isPercentOrCalculated() &amp;&amp; !mainAxisExtentIsDefinite());
-}
-
</del><span class="cx"> LayoutUnit RenderFlexibleBox::mainAxisScrollbarExtentForChild(RenderBox&amp; child) const
</span><span class="cx"> {
</span><span class="cx">     return isHorizontalFlow() ? child.verticalScrollbarWidth() : child.horizontalScrollbarHeight();
</span><span class="lines">@@ -859,19 +858,84 @@
</span><span class="cx">     }
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-LayoutUnit RenderFlexibleBox::adjustChildSizeForMinAndMax(RenderBox&amp; child, LayoutUnit childSize)
</del><ins>+bool RenderFlexibleBox::crossAxisLengthIsDefinite(const RenderBox&amp; child, const Length&amp; length) const
</ins><span class="cx"> {
</span><ins>+    if (length.isAuto())
+        return false;
+    if (length.isPercentOrCalculated())
+        return hasOrthogonalFlow(child) ? hasDefiniteLogicalWidth() : bool(child.computePercentageLogicalHeight(length));
+    return length.isFixed();
+}
+
+    
+Optional&lt;LayoutUnit&gt; RenderFlexibleBox::computeMainSizeFromAspectRatioUsing(const RenderBox&amp; child, Length crossSizeLength) const
+{
+    ASSERT(child.hasAspectRatio());
+    ASSERT(child.intrinsicSize().height() &gt; 0);
+    
+    Optional&lt;LayoutUnit&gt; crossSize;
+    if (crossSizeLength.isFixed())
+        crossSize = LayoutUnit(crossSizeLength.value());
+    else {
+        ASSERT(crossSizeLength.isPercentOrCalculated());
+        crossSize = hasOrthogonalFlow(child) ?
+        adjustBorderBoxLogicalWidthForBoxSizing(valueForLength(crossSizeLength, contentWidth())) :
+        child.computePercentageLogicalHeight(crossSizeLength);
+    }
+    
+    if (!crossSize)
+        return crossSize;
+
+    const LayoutSize&amp; childIntrinsicSize = child.intrinsicSize();
+    double ratio = childIntrinsicSize.width().toFloat() / childIntrinsicSize.height().toFloat();
+    if (isHorizontalFlow())
+        return LayoutUnit(crossSize.value() * ratio);
+    return LayoutUnit(crossSize.value() / ratio);
+}
+
+LayoutUnit RenderFlexibleBox::adjustChildSizeForAspectRatioCrossAxisMinAndMax(const RenderBox&amp; child, LayoutUnit childSize)
+{
+    Length crossMin = isHorizontalFlow() ? child.style().minHeight() : child.style().minWidth();
+    Length crossMax = isHorizontalFlow() ? child.style().maxHeight() : child.style().maxWidth();
+
+    if (crossAxisLengthIsDefinite(child, crossMax)) {
+        Optional&lt;LayoutUnit&gt; maxValue = computeMainSizeFromAspectRatioUsing(child, crossMax);
+        if (maxValue)
+            childSize = std::min(maxValue.value(), childSize);
+    }
+    
+    if (crossAxisLengthIsDefinite(child, crossMin)) {
+        Optional&lt;LayoutUnit&gt; minValue = computeMainSizeFromAspectRatioUsing(child, crossMin);
+        if (minValue)
+            childSize = std::max(minValue.value(), childSize);
+    }
+    
+    return childSize;
+}
+
+bool RenderFlexibleBox::useChildAspectRatio(const RenderBox&amp; child) const
+{
+    if (!child.hasAspectRatio())
+        return false;
+    if (!child.intrinsicSize().height())
+        return false;
+    Length crossSize = isHorizontalFlow() ? child.style().height() : child.style().width();
+    return crossAxisLengthIsDefinite(child, crossSize);
+}
+
+LayoutUnit RenderFlexibleBox::adjustChildSizeForMinAndMax(const RenderBox&amp; child, LayoutUnit childSize)
+{
</ins><span class="cx">     Length max = isHorizontalFlow() ? child.style().maxWidth() : child.style().maxHeight();
</span><span class="cx">     Optional&lt;LayoutUnit&gt; maxExtent = Nullopt;
</span><span class="cx">     if (max.isSpecifiedOrIntrinsic()) {
</span><span class="cx">         maxExtent = computeMainAxisExtentForChild(child, MaxSize, max);
</span><span class="cx">         childSize = std::min(childSize, maxExtent.valueOr(childSize));
</span><span class="cx">     }
</span><del>-
</del><ins>+    
</ins><span class="cx">     Length min = isHorizontalFlow() ? child.style().minWidth() : child.style().minHeight();
</span><span class="cx">     if (min.isSpecifiedOrIntrinsic())
</span><span class="cx">         return std::max(childSize, computeMainAxisExtentForChild(child, MinSize, min).valueOr(childSize));
</span><del>-
</del><ins>+    
</ins><span class="cx">     if (!isFlexibleBoxImpl() &amp;&amp; min.isAuto() &amp;&amp; mainAxisOverflowForChild(child) == OVISIBLE &amp;&amp; !(isColumnFlow() &amp;&amp; is&lt;RenderFlexibleBox&gt;(child))) {
</span><span class="cx">         // This is the implementation of CSS flexbox section 4.5 which defines the minimum size of &quot;pure&quot; flex
</span><span class="cx">         // items. For any other item the value should be 0, this also includes RenderFlexibleBox's derived clases
</span><span class="lines">@@ -880,15 +944,23 @@
</span><span class="cx">         // size handling from the flex box spec first (4.5).
</span><span class="cx">         LayoutUnit contentSize = computeMainAxisExtentForChild(child, MinSize, Length(MinContent)).value();
</span><span class="cx">         ASSERT(contentSize &gt;= 0);
</span><ins>+        if (child.hasAspectRatio() &amp;&amp; child.intrinsicSize().height() &gt; 0)
+            contentSize = adjustChildSizeForAspectRatioCrossAxisMinAndMax(child, contentSize);
</ins><span class="cx">         contentSize = std::min(contentSize, maxExtent.valueOr(contentSize));
</span><del>-
</del><ins>+        
</ins><span class="cx">         Length mainSize = isHorizontalFlow() ? child.style().width() : child.style().height();
</span><del>-        if (!mainAxisLengthIsIndefinite(mainSize)) {
</del><ins>+        if (mainAxisLengthIsDefinite(child, mainSize)) {
</ins><span class="cx">             LayoutUnit resolvedMainSize = computeMainAxisExtentForChild(child, MainOrPreferredSize, mainSize).value();
</span><span class="cx">             ASSERT(resolvedMainSize &gt;= 0);
</span><span class="cx">             LayoutUnit specifiedSize = std::min(resolvedMainSize, maxExtent.valueOr(resolvedMainSize));
</span><del>-
</del><span class="cx">             return std::max(childSize, std::min(specifiedSize, contentSize));
</span><ins>+        } else if (useChildAspectRatio(child)) {
+            Length crossSizeLength = isHorizontalFlow() ? child.style().height() : child.style().width();
+            Optional&lt;LayoutUnit&gt; transferredSize = computeMainSizeFromAspectRatioUsing(child, crossSizeLength);
+            if (transferredSize) {
+                transferredSize = adjustChildSizeForAspectRatioCrossAxisMinAndMax(child, transferredSize.value());
+                return std::max(childSize, std::min(transferredSize.value(), contentSize));
+            }
</ins><span class="cx">         }
</span><span class="cx">         return std::max(childSize, contentSize);
</span><span class="cx">     }
</span><span class="lines">@@ -1091,7 +1163,7 @@
</span><span class="cx">         child.updateLogicalHeight();
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-EOverflow RenderFlexibleBox::mainAxisOverflowForChild(RenderBox&amp; child) const
</del><ins>+EOverflow RenderFlexibleBox::mainAxisOverflowForChild(const RenderBox&amp; child) const
</ins><span class="cx"> {
</span><span class="cx">     if (isHorizontalFlow())
</span><span class="cx">         return child.style().overflowX();
</span></span></pre></div>
<a id="trunkSourceWebCorerenderingRenderFlexibleBoxh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/rendering/RenderFlexibleBox.h (201515 => 201516)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/rendering/RenderFlexibleBox.h        2016-05-31 17:53:20 UTC (rev 201515)
+++ trunk/Source/WebCore/rendering/RenderFlexibleBox.h        2016-05-31 18:42:17 UTC (rev 201516)
</span><span class="lines">@@ -86,7 +86,7 @@
</span><span class="cx">     typedef Vector&lt;LayoutRect, 8&gt; ChildFrameRects;
</span><span class="cx"> 
</span><span class="cx">     bool isFlexibleBox() const final { return true; }
</span><del>-    bool hasOrthogonalFlow(RenderBox&amp; child) const;
</del><ins>+    bool hasOrthogonalFlow(const RenderBox&amp; child) const;
</ins><span class="cx">     bool isColumnFlow() const;
</span><span class="cx">     bool isLeftToRightFlow() const;
</span><span class="cx">     bool isMultiline() const;
</span><span class="lines">@@ -98,7 +98,7 @@
</span><span class="cx">     LayoutUnit mainAxisExtent() const;
</span><span class="cx">     LayoutUnit crossAxisContentExtent() const;
</span><span class="cx">     LayoutUnit mainAxisContentExtent(LayoutUnit contentLogicalHeight);
</span><del>-    Optional&lt;LayoutUnit&gt; computeMainAxisExtentForChild(RenderBox&amp; child, SizeType, const Length&amp; size);
</del><ins>+    Optional&lt;LayoutUnit&gt; computeMainAxisExtentForChild(const RenderBox&amp; child, SizeType, const Length&amp; size);
</ins><span class="cx">     WritingMode transformedWritingMode() const;
</span><span class="cx">     LayoutUnit flowAwareBorderStart() const;
</span><span class="cx">     LayoutUnit flowAwareBorderEnd() const;
</span><span class="lines">@@ -122,7 +122,7 @@
</span><span class="cx">     LayoutUnit mainAxisBorderAndPaddingExtentForChild(RenderBox&amp; child) const;
</span><span class="cx">     LayoutUnit mainAxisScrollbarExtentForChild(RenderBox&amp; child) const;
</span><span class="cx">     LayoutUnit preferredMainAxisContentExtentForChild(RenderBox&amp; child, bool hasInfiniteLineLength);
</span><del>-    EOverflow mainAxisOverflowForChild(RenderBox&amp;) const;
</del><ins>+    EOverflow mainAxisOverflowForChild(const RenderBox&amp;) const;
</ins><span class="cx"> 
</span><span class="cx">     void layoutFlexItems(bool relayoutChildren, Vector&lt;LineContext&gt;&amp;);
</span><span class="cx">     LayoutUnit autoMarginOffsetInMainAxis(const OrderedFlexItemList&amp;, LayoutUnit&amp; availableFreeSpace);
</span><span class="lines">@@ -139,7 +139,8 @@
</span><span class="cx"> 
</span><span class="cx">     LayoutUnit computeChildMarginValue(const Length&amp; margin);
</span><span class="cx">     void prepareOrderIteratorAndMargins();
</span><del>-    LayoutUnit adjustChildSizeForMinAndMax(RenderBox&amp;, LayoutUnit childSize);
</del><ins>+    LayoutUnit adjustChildSizeForMinAndMax(const RenderBox&amp;, LayoutUnit childSize);
+    LayoutUnit adjustChildSizeForAspectRatioCrossAxisMinAndMax(const RenderBox&amp;, LayoutUnit childSize);
</ins><span class="cx">     bool computeNextFlexLine(OrderedFlexItemList&amp; orderedChildren, LayoutUnit&amp; preferredMainAxisExtent, double&amp; totalFlexGrow, double&amp; totalWeightedFlexShrink, LayoutUnit&amp; minMaxAppliedMainAxisExtent, bool&amp; hasInfiniteLineLength);
</span><span class="cx"> 
</span><span class="cx">     bool resolveFlexibleLengths(FlexSign, const OrderedFlexItemList&amp;, LayoutUnit&amp; availableFreeSpace, double&amp; totalFlexGrow, double&amp; totalWeightedFlexShrink, InflexibleFlexItemSize&amp;, Vector&lt;LayoutUnit&gt;&amp; childSizes, bool hasInfiniteLineLength);
</span><span class="lines">@@ -158,9 +159,11 @@
</span><span class="cx">     void flipForRightToLeftColumn();
</span><span class="cx">     void flipForWrapReverse(const Vector&lt;LineContext&gt;&amp;, LayoutUnit crossAxisStartEdge);
</span><span class="cx"> 
</span><del>-    bool mainAxisExtentIsDefinite() const;
-    bool mainAxisLengthIsIndefinite(const Length&amp; flexBasis) const;
-
</del><ins>+    bool mainAxisLengthIsDefinite(const RenderBox&amp;, const Length&amp;) const;
+    bool crossAxisLengthIsDefinite(const RenderBox&amp;, const Length&amp;) const;
+    bool useChildAspectRatio(const RenderBox&amp;) const;
+    Optional&lt;LayoutUnit&gt; computeMainSizeFromAspectRatioUsing(const RenderBox&amp; child, Length crossSizeLength) const;
+    
</ins><span class="cx">     virtual bool isFlexibleBoxImpl() const { return false; };
</span><span class="cx"> 
</span><span class="cx">     mutable OrderIterator m_orderIterator;
</span></span></pre>
</div>
</div>

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