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      1 /*
      2  * This file is part of the render object implementation for KHTML.
      3  *
      4  * Copyright (C) 2003 Apple Computer, Inc.
      5  *
      6  * This library is free software; you can redistribute it and/or
      7  * modify it under the terms of the GNU Library General Public
      8  * License as published by the Free Software Foundation; either
      9  * version 2 of the License, or (at your option) any later version.
     10  *
     11  * This library is distributed in the hope that it will be useful,
     12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14  * Library General Public License for more details.
     15  *
     16  * You should have received a copy of the GNU Library General Public License
     17  * along with this library; see the file COPYING.LIB.  If not, write to
     18  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     19  * Boston, MA 02110-1301, USA.
     20  *
     21  */
     22 
     23 #ifndef RenderDeprecatedFlexibleBox_h
     24 #define RenderDeprecatedFlexibleBox_h
     25 
     26 #include "core/rendering/RenderBlock.h"
     27 
     28 namespace WebCore {
     29 
     30 class FlexBoxIterator;
     31 
     32 class RenderDeprecatedFlexibleBox FINAL : public RenderBlock {
     33 public:
     34     RenderDeprecatedFlexibleBox(Element*);
     35     virtual ~RenderDeprecatedFlexibleBox();
     36 
     37     static RenderDeprecatedFlexibleBox* createAnonymous(Document*);
     38 
     39     virtual const char* renderName() const;
     40 
     41     virtual void styleWillChange(StyleDifference, const RenderStyle* newStyle) OVERRIDE;
     42 
     43     virtual void layoutBlock(bool relayoutChildren, LayoutUnit pageHeight = 0);
     44     void layoutHorizontalBox(bool relayoutChildren);
     45     void layoutVerticalBox(bool relayoutChildren);
     46 
     47     virtual bool avoidsFloats() const { return true; }
     48     virtual bool isDeprecatedFlexibleBox() const { return true; }
     49     virtual bool isStretchingChildren() const { return m_stretchingChildren; }
     50     virtual bool canCollapseAnonymousBlockChild() const OVERRIDE { return false; }
     51 
     52     void placeChild(RenderBox* child, const LayoutPoint& location);
     53 
     54 protected:
     55     virtual void computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const OVERRIDE;
     56     virtual void computePreferredLogicalWidths() OVERRIDE;
     57 
     58     LayoutUnit allowedChildFlex(RenderBox* child, bool expanding, unsigned group);
     59 
     60     bool hasMultipleLines() const { return style()->boxLines() == MULTIPLE; }
     61     bool isVertical() const { return style()->boxOrient() == VERTICAL; }
     62     bool isHorizontal() const { return style()->boxOrient() == HORIZONTAL; }
     63 
     64     bool m_stretchingChildren;
     65 
     66 private:
     67     virtual bool supportsPartialLayout() const OVERRIDE { return false; }
     68 
     69     void applyLineClamp(FlexBoxIterator&, bool relayoutChildren);
     70     void clearLineClamp();
     71 };
     72 
     73 } // namespace WebCore
     74 
     75 #endif // RenderDeprecatedFlexibleBox_h
     76