Account for perspective and preserve-3d in mapToVisualRectInAncestorSpace

third_party/WebKit/Source/core/layout/LayoutBox.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2006, 2007 Apple 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
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 874 matching lines @@
       EBreakBetween previousBreakAfterValue) const;
 
   // Return true if we should insert a break in front of this box. The box needs
   // to start at a valid class A break point in order to allow a forced break.
   // To determine whether or not to break, we also need to know the break-after
   // value of the previous in-flow sibling.
   bool needsForcedBreakBefore(EBreakBetween previousBreakAfterValue) const;
 
   bool paintedOutputOfObjectHasNoEffectRegardlessOfSize() const override;
   LayoutRect localVisualRect() const override;
-  bool mapToVisualRectInAncestorSpace(
+  bool mapToVisualRectInAncestorSpaceInternal(
       const LayoutBoxModelObject* ancestor,
-      LayoutRect&,
+      TransformState&,
       VisualRectFlags = DefaultVisualRectFlags) const override;
 
   LayoutUnit containingBlockLogicalHeightForGetComputedStyle() const;
 
   LayoutUnit containingBlockLogicalWidthForContent() const override;
   LayoutUnit containingBlockLogicalHeightForContent(
       AvailableLogicalHeightType) const;
 
   LayoutUnit containingBlockAvailableLineWidth() const;
   LayoutUnit perpendicularContainingBlockLogicalHeight() const;
@@ skipping 320 matching lines @@
   bool hasVisualOverflow() const {
     return m_overflow && !borderBoxRect().contains(visualOverflowRect());
   }
 
   virtual bool needsPreferredWidthsRecalculation() const;
 
   // See README.md for an explanation of scroll origin.
   virtual IntSize originAdjustmentForScrollbars() const;
   IntSize scrolledContentOffset() const;
 
-  // Maps a rect in scrolling contents space to box space and apply overflow
-  // clip if needed. Returns true if no clipping applied or the rect actually
-  // intersects the clipping region. If edgeInclusive is true, then this method
-  // may return true even if the resulting rect has zero area.
+  // Maps from scrolling contents space to box space and apply overflow
+  // clip if needed. Returns true if no clipping applied or the flattened quad
+  // bounds actually intersects the clipping region. If edgeInclusive is true,
+  // then this method may return true even if the resulting rect has zero area.
+  //
+  // When applying offsets and not clips, the TransformAccumulation is
+  // respected. If there is a clip, the TransformState is flattened first.
   bool mapScrollingContentsRectToBoxSpace(
-      LayoutRect&,
+      TransformState&,
+      TransformState::TransformAccumulation,
       VisualRectFlags = DefaultVisualRectFlags) const;
 
   virtual bool hasRelativeLogicalWidth() const;
   virtual bool hasRelativeLogicalHeight() const;
 
   bool hasHorizontalLayoutOverflow() const {
     if (!m_overflow)
       return false;
 
     LayoutRect layoutOverflowRect = m_overflow->layoutOverflowRect();
@@ skipping 307 matching lines @@
 
   void locationChanged();
   void sizeChanged();
 
   virtual bool isInSelfHitTestingPhase(HitTestAction hitTestAction) const {
     return hitTestAction == HitTestForeground;
   }
 
   void updateBackgroundAttachmentFixedStatusAfterStyleChange();
 
-  void inflateVisualRectForFilter(LayoutRect&) const;
+  void inflateVisualRectForFilter(TransformState&) const;
   void inflateVisualRectForFilterUnderContainer(
-      LayoutRect&,
+      TransformState&,
       const LayoutObject& container,
       const LayoutBoxModelObject* ancestorToStopAt) const;
 
   LayoutRectOutsets m_marginBoxOutsets;
 
   void addSnapArea(const LayoutBox&);
   void removeSnapArea(const LayoutBox&);
 
   LayoutRect debugRect() const override;
 
@@ skipping 114 matching lines @@
          breakValue == EBreakBetween::kLeft ||
          breakValue == EBreakBetween::kPage ||
          breakValue == EBreakBetween::kRecto ||
          breakValue == EBreakBetween::kRight ||
          breakValue == EBreakBetween::kVerso;
 }
 
 }  // namespace blink
 
 #endif  // LayoutBox_h