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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/178541">178541</a></dd>
<dt>Author</dt> <dd>zalan@apple.com</dd>
<dt>Date</dt> <dd>2015-01-15 16:11:27 -0800 (Thu, 15 Jan 2015)</dd>
</dl>

<h3>Log Message</h3>
<pre>Reduce LayoutRect::infiniteRect() usage.
https://bugs.webkit.org/show_bug.cgi?id=140511

Reviewed by Simon Fraser.

This is in preparation to get rid of LayoutRect/FloatRect::infiniteRect().

No change in functionality.

* platform/graphics/LayoutRect.h:
(WebCore::LayoutRect::isInfinite):
* rendering/ClipRect.h:
(WebCore::ClipRect::reset):
(WebCore::ClipRect::isEmpty):
(WebCore::ClipRect::isInfinite):
(WebCore::ClipRect::setRect): Deleted.
* rendering/PaintInfo.h:
(WebCore::PaintInfo::applyTransform):
* rendering/RenderLayer.cpp:
(WebCore::RenderLayer::calculateClipRects):
* rendering/RenderLayer.h:
(WebCore::ClipRects::reset):
* rendering/RenderLayerBacking.cpp:
(WebCore::RenderLayerBacking::updateGeometry):
* rendering/RenderLayerCompositor.cpp:
(WebCore::RenderLayerCompositor::clippedByAncestor):</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCoreplatformgraphicsLayoutRecth">trunk/Source/WebCore/platform/graphics/LayoutRect.h</a></li>
<li><a href="#trunkSourceWebCorerenderingClipRecth">trunk/Source/WebCore/rendering/ClipRect.h</a></li>
<li><a href="#trunkSourceWebCorerenderingPaintInfoh">trunk/Source/WebCore/rendering/PaintInfo.h</a></li>
<li><a href="#trunkSourceWebCorerenderingRenderLayercpp">trunk/Source/WebCore/rendering/RenderLayer.cpp</a></li>
<li><a href="#trunkSourceWebCorerenderingRenderLayerBackingcpp">trunk/Source/WebCore/rendering/RenderLayerBacking.cpp</a></li>
<li><a href="#trunkSourceWebCorerenderingRenderLayerCompositorcpp">trunk/Source/WebCore/rendering/RenderLayerCompositor.cpp</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (178540 => 178541)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog        2015-01-16 00:06:22 UTC (rev 178540)
+++ trunk/Source/WebCore/ChangeLog        2015-01-16 00:11:27 UTC (rev 178541)
</span><span class="lines">@@ -1,3 +1,32 @@
</span><ins>+2015-01-15  Zalan Bujtas  &lt;zalan@apple.com&gt;
+
+        Reduce LayoutRect::infiniteRect() usage.
+        https://bugs.webkit.org/show_bug.cgi?id=140511
+
+        Reviewed by Simon Fraser.
+
+        This is in preparation to get rid of LayoutRect/FloatRect::infiniteRect().
+
+        No change in functionality.
+
+        * platform/graphics/LayoutRect.h:
+        (WebCore::LayoutRect::isInfinite):
+        * rendering/ClipRect.h:
+        (WebCore::ClipRect::reset):
+        (WebCore::ClipRect::isEmpty):
+        (WebCore::ClipRect::isInfinite):
+        (WebCore::ClipRect::setRect): Deleted.
+        * rendering/PaintInfo.h:
+        (WebCore::PaintInfo::applyTransform):
+        * rendering/RenderLayer.cpp:
+        (WebCore::RenderLayer::calculateClipRects):
+        * rendering/RenderLayer.h:
+        (WebCore::ClipRects::reset):
+        * rendering/RenderLayerBacking.cpp:
+        (WebCore::RenderLayerBacking::updateGeometry):
+        * rendering/RenderLayerCompositor.cpp:
+        (WebCore::RenderLayerCompositor::clippedByAncestor):
+
</ins><span class="cx"> 2015-01-15  Chris Dumez  &lt;cdumez@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         Intermittent WebCore build failures - CSSPropertyNames.gperf: No keywords in input file! calling gperf failed: 256 at WebCore/css/makeprop.pl line 901
</span></span></pre></div>
<a id="trunkSourceWebCoreplatformgraphicsLayoutRecth"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/platform/graphics/LayoutRect.h (178540 => 178541)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/graphics/LayoutRect.h        2015-01-16 00:06:22 UTC (rev 178540)
+++ trunk/Source/WebCore/platform/graphics/LayoutRect.h        2015-01-16 00:11:27 UTC (rev 178541)
</span><span class="lines">@@ -153,6 +153,7 @@
</span><span class="cx">     void scale(float xScale, float yScale);
</span><span class="cx"> 
</span><span class="cx">     LayoutRect transposedRect() const { return LayoutRect(m_location.transposedPoint(), m_size.transposedSize()); }
</span><ins>+    bool isInfinite() const { return *this == LayoutRect::infiniteRect(); }
</ins><span class="cx"> 
</span><span class="cx">     static LayoutRect infiniteRect()
</span><span class="cx">     {
</span></span></pre></div>
<a id="trunkSourceWebCorerenderingClipRecth"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/rendering/ClipRect.h (178540 => 178541)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/rendering/ClipRect.h        2015-01-16 00:06:22 UTC (rev 178540)
+++ trunk/Source/WebCore/rendering/ClipRect.h        2015-01-16 00:11:27 UTC (rev 178541)
</span><span class="lines">@@ -42,8 +42,9 @@
</span><span class="cx">     }
</span><span class="cx">     
</span><span class="cx">     const LayoutRect&amp; rect() const { return m_rect; }
</span><del>-    void setRect(const LayoutRect&amp; rect) { m_rect = rect; }
-    
</del><ins>+
+    void reset() { m_rect = LayoutRect::infiniteRect(); }
+
</ins><span class="cx">     bool affectedByRadius() const { return m_affectedByRadius; }
</span><span class="cx">     void setAffectedByRadius(bool affectedByRadius) { m_affectedByRadius = affectedByRadius; }
</span><span class="cx">     
</span><span class="lines">@@ -57,10 +58,12 @@
</span><span class="cx">     void move(const LayoutSize&amp; size) { m_rect.move(size); }
</span><span class="cx">     void moveBy(const LayoutPoint&amp; point) { m_rect.moveBy(point); }
</span><span class="cx">     
</span><del>-    bool isEmpty() const { return m_rect.isEmpty(); }
</del><span class="cx">     bool intersects(const LayoutRect&amp; rect) const { return m_rect.intersects(rect); }
</span><span class="cx">     bool intersects(const HitTestLocation&amp;) const;
</span><del>-    
</del><ins>+
+    bool isEmpty() const { return m_rect.isEmpty(); }
+    bool isInfinite() const { return m_rect.isInfinite(); }
+
</ins><span class="cx">     void inflateX(LayoutUnit dx) { m_rect.inflateX(dx); }
</span><span class="cx">     void inflateY(LayoutUnit dy) { m_rect.inflateY(dy); }
</span><span class="cx">     void inflate(LayoutUnit d) { inflateX(d); inflateY(d); }
</span></span></pre></div>
<a id="trunkSourceWebCorerenderingPaintInfoh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/rendering/PaintInfo.h (178540 => 178541)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/rendering/PaintInfo.h        2015-01-16 00:06:22 UTC (rev 178540)
+++ trunk/Source/WebCore/rendering/PaintInfo.h        2015-01-16 00:11:27 UTC (rev 178541)
</span><span class="lines">@@ -95,7 +95,7 @@
</span><span class="cx"> 
</span><span class="cx">         context-&gt;concatCTM(localToAncestorTransform);
</span><span class="cx"> 
</span><del>-        if (rect == LayoutRect::infiniteRect())
</del><ins>+        if (rect.isInfinite())
</ins><span class="cx">             return;
</span><span class="cx"> 
</span><span class="cx">         FloatRect tranformedRect(localToAncestorTransform.inverse().mapRect(rect));
</span></span></pre></div>
<a id="trunkSourceWebCorerenderingRenderLayercpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/rendering/RenderLayer.cpp (178540 => 178541)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/rendering/RenderLayer.cpp        2015-01-16 00:06:22 UTC (rev 178540)
+++ trunk/Source/WebCore/rendering/RenderLayer.cpp        2015-01-16 00:11:27 UTC (rev 178541)
</span><span class="lines">@@ -148,11 +148,11 @@
</span><span class="cx"> 
</span><span class="cx">     ClipRects() = default;
</span><span class="cx"> 
</span><del>-    void reset(const LayoutRect&amp; clipRect)
</del><ins>+    void reset()
</ins><span class="cx">     {
</span><del>-        m_overflowClipRect = clipRect;
-        m_fixedClipRect = clipRect;
-        m_posClipRect = clipRect;
</del><ins>+        m_overflowClipRect.reset();
+        m_fixedClipRect.reset();
+        m_posClipRect.reset();
</ins><span class="cx">         m_fixed = false;
</span><span class="cx">     }
</span><span class="cx"> 
</span><span class="lines">@@ -5406,7 +5406,7 @@
</span><span class="cx"> {
</span><span class="cx">     if (!parent()) {
</span><span class="cx">         // The root layer's clip rect is always infinite.
</span><del>-        clipRects.reset(LayoutRect::infiniteRect());
</del><ins>+        clipRects.reset();
</ins><span class="cx">         return;
</span><span class="cx">     }
</span><span class="cx">     
</span><span class="lines">@@ -5430,7 +5430,7 @@
</span><span class="cx">             parentLayer-&gt;calculateClipRects(parentContext, clipRects);
</span><span class="cx">         }
</span><span class="cx">     } else
</span><del>-        clipRects.reset(LayoutRect::infiniteRect());
</del><ins>+        clipRects.reset();
</ins><span class="cx"> 
</span><span class="cx">     // A fixed object is essentially the root of its containing block hierarchy, so when
</span><span class="cx">     // we encounter such an object, we reset our clip rects to the fixedClipRect.
</span><span class="lines">@@ -5519,7 +5519,7 @@
</span><span class="cx">     RenderView&amp; view = renderer().view();
</span><span class="cx"> 
</span><span class="cx">     // Note: infinite clipRects should not be scrolled here, otherwise they will accidentally no longer be considered infinite.
</span><del>-    if (parentRects.fixed() &amp;&amp; &amp;clipRectsContext.rootLayer-&gt;renderer() == &amp;view &amp;&amp; backgroundClipRect != LayoutRect::infiniteRect())
</del><ins>+    if (parentRects.fixed() &amp;&amp; &amp;clipRectsContext.rootLayer-&gt;renderer() == &amp;view &amp;&amp; !backgroundClipRect.isInfinite())
</ins><span class="cx">         backgroundClipRect.move(view.frameView().scrollOffsetForFixedPosition());
</span><span class="cx"> 
</span><span class="cx">     return backgroundClipRect;
</span><span class="lines">@@ -5671,7 +5671,7 @@
</span><span class="cx">     calculateRects(clipRectsContext, LayoutRect::infiniteRect(), layerBounds, backgroundRect, foregroundRect, outlineRect, offsetFromRoot);
</span><span class="cx"> 
</span><span class="cx">     LayoutRect clipRect = backgroundRect.rect();
</span><del>-    if (clipRect == LayoutRect::infiniteRect())
</del><ins>+    if (clipRect.isInfinite())
</ins><span class="cx">         return clipRect;
</span><span class="cx"> 
</span><span class="cx">     if (renderer().hasClip()) {
</span><span class="lines">@@ -5881,7 +5881,7 @@
</span><span class="cx">     if (flags &amp; UseLocalClipRectIfPossible) {
</span><span class="cx">         bool clipExceedsBounds = false;
</span><span class="cx">         LayoutRect localClipRect = this-&gt;localClipRect(clipExceedsBounds);
</span><del>-        if (localClipRect != LayoutRect::infiniteRect() &amp;&amp; !clipExceedsBounds) {
</del><ins>+        if (!localClipRect.isInfinite() &amp;&amp; !clipExceedsBounds) {
</ins><span class="cx">             if ((flags &amp; IncludeSelfTransform) &amp;&amp; paintsWithTransform(PaintBehaviorNormal))
</span><span class="cx">                 localClipRect = transform()-&gt;mapRect(localClipRect);
</span><span class="cx"> 
</span><span class="lines">@@ -6917,7 +6917,7 @@
</span><span class="cx">         if (flowFragment-&gt;shouldClipFlowThreadContent())
</span><span class="cx">             clipRect.intersect(regionClipRect);
</span><span class="cx"> 
</span><del>-        bool shouldClip = (clipRect != LayoutRect::infiniteRect());
</del><ins>+        bool shouldClip = !clipRect.isInfinite();
</ins><span class="cx">         // Optimize clipping for the single fragment case.
</span><span class="cx">         if (shouldClip)
</span><span class="cx">             clipToRect(paintingInfo, context, clipRect);
</span></span></pre></div>
<a id="trunkSourceWebCorerenderingRenderLayerBackingcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/rendering/RenderLayerBacking.cpp (178540 => 178541)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/rendering/RenderLayerBacking.cpp        2015-01-16 00:06:22 UTC (rev 178540)
+++ trunk/Source/WebCore/rendering/RenderLayerBacking.cpp        2015-01-16 00:11:27 UTC (rev 178541)
</span><span class="lines">@@ -774,7 +774,7 @@
</span><span class="cx">         ShouldRespectOverflowClip shouldRespectOverflowClip = compAncestor-&gt;isolatesCompositedBlending() ? RespectOverflowClip : IgnoreOverflowClip;
</span><span class="cx">         RenderLayer::ClipRectsContext clipRectsContext(compAncestor, TemporaryClipRects, IgnoreOverlayScrollbarSize, shouldRespectOverflowClip);
</span><span class="cx">         LayoutRect parentClipRect = m_owningLayer.backgroundClipRect(clipRectsContext).rect(); // FIXME: Incorrect for CSS regions.
</span><del>-        ASSERT(parentClipRect != LayoutRect::infiniteRect());
</del><ins>+        ASSERT(!parentClipRect.isInfinite());
</ins><span class="cx">         m_ancestorClippingLayer-&gt;setPosition(FloatPoint(parentClipRect.location() - graphicsLayerParentLocation));
</span><span class="cx">         m_ancestorClippingLayer-&gt;setSize(parentClipRect.size());
</span><span class="cx"> 
</span></span></pre></div>
<a id="trunkSourceWebCorerenderingRenderLayerCompositorcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/rendering/RenderLayerCompositor.cpp (178540 => 178541)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/rendering/RenderLayerCompositor.cpp        2015-01-16 00:06:22 UTC (rev 178540)
+++ trunk/Source/WebCore/rendering/RenderLayerCompositor.cpp        2015-01-16 00:11:27 UTC (rev 178541)
</span><span class="lines">@@ -2417,7 +2417,7 @@
</span><span class="cx">             return false;
</span><span class="cx">     }
</span><span class="cx"> 
</span><del>-    return layer.backgroundClipRect(RenderLayer::ClipRectsContext(computeClipRoot, TemporaryClipRects)).rect() != LayoutRect::infiniteRect(); // FIXME: Incorrect for CSS regions.
</del><ins>+    return !layer.backgroundClipRect(RenderLayer::ClipRectsContext(computeClipRoot, TemporaryClipRects)).isInfinite(); // FIXME: Incorrect for CSS regions.
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> // Return true if the given layer is a stacking context and has compositing child
</span></span></pre>
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