Add RenderObject::needsResizeLayout

Source/core/rendering/RenderObject.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 511 matching lines @@
     };
     bool hasBoxDecorations() const { return m_bitfields.boxDecorationState() != NoBoxDecorations; }
     bool backgroundIsKnownToBeObscured();
     bool borderImageIsLoadedAndCanBeRendered() const;
     bool mustRepaintBackgroundOrBorder() const;
     bool hasBackground() const { return style()->hasBackground(); }
     bool hasEntirelyFixedBackground() const;
 
     bool needsLayout() const
     {
-        return m_bitfields.selfNeedsLayout() || m_bitfields.normalChildNeedsLayout() || m_bitfields.posChildNeedsLayout()
-            || m_bitfields.needsSimplifiedNormalFlowLayout() || m_bitfields.needsPositionedMovementLayout();
+        return m_bitfields.selfNeedsLayout()
+            || m_bitfields.normalChildNeedsLayout()
+            || m_bitfields.posChildNeedsLayout()
+            || m_bitfields.needsSimplifiedNormalFlowLayout()
+            || m_bitfields.needsPositionedMovementLayout()
+            || m_bitfields.needsResizeLayout();
     }
 
     bool selfNeedsLayout() const { return m_bitfields.selfNeedsLayout(); }
     bool needsPositionedMovementLayout() const { return m_bitfields.needsPositionedMovementLayout(); }
     bool needsPositionedMovementLayoutOnly() const
     {
-        return m_bitfields.needsPositionedMovementLayout() && !m_bitfields.selfNeedsLayout() && !m_bitfields.normalChildNeedsLayout()
-            && !m_bitfields.posChildNeedsLayout() && !m_bitfields.needsSimplifiedNormalFlowLayout();
+        return m_bitfields.needsPositionedMovementLayout()
+            && !m_bitfields.selfNeedsLayout()
+            && !m_bitfields.normalChildNeedsLayout()
+            && !m_bitfields.posChildNeedsLayout()
+            && !m_bitfields.needsSimplifiedNormalFlowLayout()
+            && !m_bitfields.needsResizeLayout();
     }
 
     bool posChildNeedsLayout() const { return m_bitfields.posChildNeedsLayout(); }
     bool needsSimplifiedNormalFlowLayout() const { return m_bitfields.needsSimplifiedNormalFlowLayout(); }
     bool normalChildNeedsLayout() const { return m_bitfields.normalChildNeedsLayout(); }
 
+    bool needsResizeLayout() const { return m_bitfields.needsResizeLayout(); }
+    bool needsResizeLayoutOnly() const
+    {
+        return m_bitfields.needsResizeLayout()
+            && !m_bitfields.selfNeedsLayout()
+            && !m_bitfields.normalChildNeedsLayout()
+            && !m_bitfields.posChildNeedsLayout()
+            && !m_bitfields.needsSimplifiedNormalFlowLayout()
+            && !m_bitfields.needsPositionedMovementLayout();
+    }
+
     bool preferredLogicalWidthsDirty() const { return m_bitfields.preferredLogicalWidthsDirty(); }
 
     bool isSelectionBorder() const;
 
     bool hasClip() const { return isOutOfFlowPositioned() && style()->hasClip(); }
     bool hasOverflowClip() const { return m_bitfields.hasOverflowClip(); }
     bool hasClipOrOverflowClip() const { return hasClip() || hasOverflowClip(); }
 
     bool hasTransform() const { return m_bitfields.hasTransform(); }
     bool hasMask() const { return style() && style()->hasMask(); }
@@ skipping 51 matching lines @@
     virtual RenderObject* hoverAncestor() const { return parent(); }
 
     Element* offsetParent() const;
 
     void markContainingBlocksForLayout(bool scheduleRelayout = true, RenderObject* newRoot = 0, SubtreeLayoutScope* = 0);
     void setNeedsLayout(MarkingBehavior = MarkContainingBlockChain, SubtreeLayoutScope* = 0);
     void clearNeedsLayout();
     void setChildNeedsLayout(MarkingBehavior = MarkContainingBlockChain, SubtreeLayoutScope* = 0);
     void setNeedsPositionedMovementLayout();
     void setNeedsSimplifiedNormalFlowLayout();
+    void setNeedsResizeLayout();
     void setPreferredLogicalWidthsDirty(MarkingBehavior = MarkContainingBlockChain);
     void clearPreferredLogicalWidthsDirty();
     void invalidateContainerPreferredLogicalWidths();
 
     void setNeedsLayoutAndPrefWidthsRecalc()
     {
         setNeedsLayout();
         setPreferredLogicalWidthsDirty();
     }
 
@@ skipping 479 matching lines @@
             // Holding the layout bits until after repaint would remove the need
             // for this flag.
             , m_shouldDoFullRepaintAfterLayout(false)
             , m_shouldRepaintOverflow(false)
             , m_shouldDoFullRepaintIfSelfPaintingLayer(false)
             , m_onlyNeededPositionedMovementLayout(false)
             , m_needsPositionedMovementLayout(false)
             , m_normalChildNeedsLayout(false)
             , m_posChildNeedsLayout(false)
             , m_needsSimplifiedNormalFlowLayout(false)
+            , m_needsResizeLayout(false)
             , m_preferredLogicalWidthsDirty(false)
             , m_floating(false)
             , m_isAnonymous(!node)
             , m_isText(false)
             , m_isBox(false)
             , m_isInline(true)
             , m_isReplaced(false)
             , m_horizontalWritingMode(true)
             , m_isDragging(false)
             , m_hasLayer(false)
@@ skipping 17 matching lines @@
         // 32 bits have been used in the first word, and 5 in the second.
         ADD_BOOLEAN_BITFIELD(selfNeedsLayout, SelfNeedsLayout);
         ADD_BOOLEAN_BITFIELD(shouldDoFullRepaintAfterLayout, ShouldDoFullRepaintAfterLayout);
         ADD_BOOLEAN_BITFIELD(shouldRepaintOverflow, ShouldRepaintOverflow);
         ADD_BOOLEAN_BITFIELD(shouldDoFullRepaintIfSelfPaintingLayer, ShouldDoFullRepaintIfSelfPaintingLayer);
         ADD_BOOLEAN_BITFIELD(onlyNeededPositionedMovementLayout, OnlyNeededPositionedMovementLayout);
         ADD_BOOLEAN_BITFIELD(needsPositionedMovementLayout, NeedsPositionedMovementLayout);
         ADD_BOOLEAN_BITFIELD(normalChildNeedsLayout, NormalChildNeedsLayout);
         ADD_BOOLEAN_BITFIELD(posChildNeedsLayout, PosChildNeedsLayout);
         ADD_BOOLEAN_BITFIELD(needsSimplifiedNormalFlowLayout, NeedsSimplifiedNormalFlowLayout);
+        ADD_BOOLEAN_BITFIELD(needsResizeLayout, NeedsResizeLayout);

[eseidel, 2014/04/01 18:25:19]

Presumably we have space for this otherwise the KeepRenderObjectSmall
COMPILE_ASSERT would fail?

         ADD_BOOLEAN_BITFIELD(preferredLogicalWidthsDirty, PreferredLogicalWidthsDirty);
         ADD_BOOLEAN_BITFIELD(floating, Floating);
 
         ADD_BOOLEAN_BITFIELD(isAnonymous, IsAnonymous);
         ADD_BOOLEAN_BITFIELD(isText, IsText);
         ADD_BOOLEAN_BITFIELD(isBox, IsBox);
         ADD_BOOLEAN_BITFIELD(isInline, IsInline);
         ADD_BOOLEAN_BITFIELD(isReplaced, IsReplaced);
         ADD_BOOLEAN_BITFIELD(horizontalWritingMode, HorizontalWritingMode);
         ADD_BOOLEAN_BITFIELD(isDragging, IsDragging);
@@ skipping 47 matching lines @@
 
 #undef ADD_BOOLEAN_BITFIELD
 
     RenderObjectBitfields m_bitfields;
 
     void setSelfNeedsLayout(bool b) { m_bitfields.setSelfNeedsLayout(b); }
     void setNeedsPositionedMovementLayout(bool b) { m_bitfields.setNeedsPositionedMovementLayout(b); }
     void setNormalChildNeedsLayout(bool b) { m_bitfields.setNormalChildNeedsLayout(b); }
     void setPosChildNeedsLayout(bool b) { m_bitfields.setPosChildNeedsLayout(b); }
     void setNeedsSimplifiedNormalFlowLayout(bool b) { m_bitfields.setNeedsSimplifiedNormalFlowLayout(b); }
+    void setNeedsResizeLayoutBit(bool b) { m_bitfields.setNeedsResizeLayout(b); }
     void setIsDragging(bool b) { m_bitfields.setIsDragging(b); }
     void setEverHadLayout(bool b) { m_bitfields.setEverHadLayout(b); }
     void setShouldRepaintOverflow(bool b) { m_bitfields.setShouldRepaintOverflow(b); }
 
 private:
     // Store state between styleWillChange and styleDidChange
     static bool s_affectsParentBlock;
 
     LayoutRect m_oldRepaintRect;
     LayoutRect m_newRepaintRect;
@@ skipping 51 matching lines @@
 }
 
 inline void RenderObject::clearNeedsLayout()
 {
     setSelfNeedsLayout(false);
     setEverHadLayout(true);
     setPosChildNeedsLayout(false);
     setNeedsSimplifiedNormalFlowLayout(false);
     setNormalChildNeedsLayout(false);
     setNeedsPositionedMovementLayout(false);
+    setNeedsResizeLayoutBit(false);
     setAncestorLineBoxDirty(false);
 #ifndef NDEBUG
     checkBlockPositionedObjectsNeedLayout();
 #endif
 }
 
 inline void RenderObject::setChildNeedsLayout(MarkingBehavior markParents, SubtreeLayoutScope* layouter)
 {
     ASSERT(!isSetNeedsLayoutForbidden());
     bool alreadyNeededLayout = normalChildNeedsLayout();
@@ skipping 20 matching lines @@
     bool alreadyNeededLayout = needsSimplifiedNormalFlowLayout();
     setNeedsSimplifiedNormalFlowLayout(true);
     ASSERT(!isSetNeedsLayoutForbidden());
     if (!alreadyNeededLayout) {
         markContainingBlocksForLayout();
         if (hasLayer())
             setLayerNeedsFullRepaint();
     }
 }
 
+inline void RenderObject::setNeedsResizeLayout()
+{
+    bool alreadyNeededLayout = needsResizeLayout();
+    setNeedsResizeLayoutBit(true);
+    ASSERT(!isSetNeedsLayoutForbidden());
+    if (!alreadyNeededLayout)
+        markContainingBlocksForLayout();
+}
+
 inline bool RenderObject::preservesNewline() const
 {
     if (isSVGInlineText())
         return false;
 
     return style()->preserveNewline();
 }
 
 inline bool RenderObject::layerCreationAllowedForSubtree() const
 {
@@ skipping 83 matching lines @@
 void showTree(const WebCore::RenderObject*);
 void showLineTree(const WebCore::RenderObject*);
 void showRenderTree(const WebCore::RenderObject* object1);
 // We don't make object2 an optional parameter so that showRenderTree
 // can be called from gdb easily.
 void showRenderTree(const WebCore::RenderObject* object1, const WebCore::RenderObject* object2);
 
 #endif
 
 #endif // RenderObject_h