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      1 /*
      2  * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org)
      3  * Copyright (C) 2004, 2005, 2006, 2007, 2009 Apple Inc. All rights reserved.
      4  *
      5  * This library is free software; you can redistribute it and/or
      6  * modify it under the terms of the GNU Library General Public
      7  * License as published by the Free Software Foundation; either
      8  * version 2 of the License, or (at your option) any later version.
      9  *
     10  * This library is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13  * Library General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU Library General Public License
     16  * along with this library; see the file COPYING.LIB.  If not, write to
     17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18  * Boston, MA 02110-1301, USA.
     19  *
     20  */
     21 
     22 #ifndef RenderReplaced_h
     23 #define RenderReplaced_h
     24 
     25 #include "core/rendering/RenderBox.h"
     26 
     27 namespace WebCore {
     28 
     29 class RenderReplaced : public RenderBox {
     30 public:
     31     RenderReplaced(Element*);
     32     RenderReplaced(Element*, const LayoutSize& intrinsicSize);
     33     virtual ~RenderReplaced();
     34 
     35     virtual LayoutUnit computeReplacedLogicalWidth(ShouldComputePreferred  = ComputeActual) const OVERRIDE;
     36     virtual LayoutUnit computeReplacedLogicalHeight() const;
     37 
     38     bool hasReplacedLogicalWidth() const;
     39     bool hasReplacedLogicalHeight() const;
     40 
     41     virtual bool needsPreferredWidthsRecalculation() const OVERRIDE;
     42 
     43 protected:
     44     virtual void willBeDestroyed();
     45 
     46     virtual void layout();
     47 
     48     virtual LayoutSize intrinsicSize() const OVERRIDE FINAL { return m_intrinsicSize; }
     49     virtual void computeIntrinsicRatioInformation(FloatSize& intrinsicSize, double& intrinsicRatio, bool& isPercentageIntrinsicSize) const;
     50 
     51     virtual void computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const OVERRIDE FINAL;
     52 
     53     virtual LayoutUnit minimumReplacedHeight() const { return LayoutUnit(); }
     54 
     55     virtual void setSelectionState(SelectionState) OVERRIDE FINAL;
     56 
     57     bool isSelected() const;
     58 
     59     virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);
     60 
     61     void setIntrinsicSize(const LayoutSize& intrinsicSize) { m_intrinsicSize = intrinsicSize; }
     62     virtual void intrinsicSizeChanged();
     63     virtual bool hasRelativeIntrinsicLogicalWidth() const { return false; }
     64 
     65     virtual void paint(PaintInfo&, const LayoutPoint&);
     66     bool shouldPaint(PaintInfo&, const LayoutPoint&);
     67     LayoutRect localSelectionRect(bool checkWhetherSelected = true) const; // This is in local coordinates, but it's a physical rect (so the top left corner is physical top left).
     68 
     69 private:
     70     virtual RenderBox* embeddedContentBox() const { return 0; }
     71     virtual const char* renderName() const { return "RenderReplaced"; }
     72 
     73     virtual bool canHaveChildren() const { return false; }
     74 
     75     virtual void computePreferredLogicalWidths() OVERRIDE FINAL;
     76     virtual void paintReplaced(PaintInfo&, const LayoutPoint&) { }
     77 
     78     virtual LayoutRect clippedOverflowRectForRepaint(const RenderLayerModelObject* repaintContainer) const OVERRIDE;
     79 
     80     virtual PositionWithAffinity positionForPoint(const LayoutPoint&) OVERRIDE FINAL;
     81 
     82     virtual bool canBeSelectionLeaf() const { return true; }
     83 
     84     virtual LayoutRect selectionRectForRepaint(const RenderLayerModelObject* repaintContainer, bool clipToVisibleContent = true) OVERRIDE FINAL;
     85     void computeAspectRatioInformationForRenderBox(RenderBox*, FloatSize& constrainedSize, double& intrinsicRatio, bool& isPercentageIntrinsicSize) const;
     86 
     87     mutable LayoutSize m_intrinsicSize;
     88 };
     89 
     90 }
     91 
     92 #endif
     93