sky/engine/platform/geometry/LayoutBoxExtent.h

/*
 * Copyright (c) 2012, Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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#ifndef SKY_ENGINE_PLATFORM_GEOMETRY_LAYOUTBOXEXTENT_H_
#define SKY_ENGINE_PLATFORM_GEOMETRY_LAYOUTBOXEXTENT_H_

#include "sky/engine/platform/LayoutUnit.h"
#include "sky/engine/platform/PlatformExport.h"
#include "sky/engine/platform/text/TextDirection.h"

namespace blink {

class PLATFORM_EXPORT LayoutBoxExtent {
public:
    LayoutBoxExtent() : m_top(0), m_right(0), m_bottom(0), m_left(0) { }
    LayoutBoxExtent(LayoutUnit top, LayoutUnit right, LayoutUnit bottom, LayoutUnit left)
        : m_top(top), m_right(right), m_bottom(bottom), m_left(left) { }

    inline LayoutUnit top() const { return m_top; }
    inline LayoutUnit right() const { return m_right; }
    inline LayoutUnit bottom() const { return m_bottom; }
    inline LayoutUnit left() const { return m_left; }

    inline void setTop(LayoutUnit value) { m_top = value; }
    inline void setRight(LayoutUnit value) { m_right = value; }
    inline void setBottom(LayoutUnit value) { m_bottom = value; }
    inline void setLeft(LayoutUnit value) { m_left = value; }

    LayoutUnit logicalTop() const;
    LayoutUnit logicalBottom() const;
    LayoutUnit logicalLeft() const;
    LayoutUnit logicalRight() const;

    LayoutUnit before() const;
    LayoutUnit after() const;
    LayoutUnit start(TextDirection) const;
    LayoutUnit end(TextDirection) const;

    void setBefore(LayoutUnit);
    void setAfter(LayoutUnit);
    void setStart(TextDirection, LayoutUnit);
    void setEnd(TextDirection, LayoutUnit);

    LayoutUnit& mutableLogicalLeft();
    LayoutUnit& mutableLogicalRight();

    LayoutUnit& mutableBefore();
    LayoutUnit& mutableAfter();

private:
    LayoutUnit m_top;
    LayoutUnit m_right;
    LayoutUnit m_bottom;
    LayoutUnit m_left;
};

} // namespace blink

#endif  // SKY_ENGINE_PLATFORM_GEOMETRY_LAYOUTBOXEXTENT_H_