ftnboss.hxx

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#ifndef INCLUDED_SW_SOURCE_CORE_INC_FTNBOSS_HXX
#define INCLUDED_SW_SOURCE_CORE_INC_FTNBOSS_HXX
 
#include "layfrm.hxx"
 
class SwFootnoteBossFrame;
class SwFootnoteContFrame;
class SwFootnoteFrame;
class SwTextFootnote;
 
// Set max. footnote area.
// Restoration of the old value in DTor. Implementation in ftnfrm.cxx
class SwSaveFootnoteHeight
{
    SwFrameDeleteGuard aGuard;
    SwFootnoteBossFrame *pBoss;
    const SwTwips nOldHeight;
    SwTwips nNewHeight;
public:
    SwSaveFootnoteHeight( SwFootnoteBossFrame *pBs, const SwTwips nDeadLine );
    ~SwSaveFootnoteHeight();
};
 
enum class SwNeighbourAdjust {
    OnlyAdjust, GrowShrink, GrowAdjust, AdjustGrow
};
 
typedef std::vector<SwFootnoteFrame*> SwFootnoteFrames;
 
class SW_DLLPUBLIC SwFootnoteBossFrame: public SwLayoutFrame
{
    // for private footnote operations
    friend class SwFrame;
    friend class SwSaveFootnoteHeight;
    friend class SwPageFrame; // for setting of MaxFootnoteHeight
 
    // max. height of the footnote container on this page
    SwTwips m_nMaxFootnoteHeight;
 
    SwFootnoteContFrame *MakeFootnoteCont();
    SwFootnoteFrame     *FindFirstFootnote();
    SwNeighbourAdjust NeighbourhoodAdjustment_() const;
 
    static void CollectFootnotes_(const SwContentFrame*, SwFootnoteFrame*,
                                  SwFootnoteFrames&, const SwFootnoteBossFrame*);
 
protected:
    void          InsertFootnote( SwFootnoteFrame * );
    static void   ResetFootnote( const SwFootnoteFrame *pAssumed );
 
public:
    SwFootnoteBossFrame( SwFrameFormat* pFormat, SwFrame* pSib )
        : SwLayoutFrame( pFormat, pSib )
        , m_nMaxFootnoteHeight(0)
        {}
 
                 SwLayoutFrame *FindBodyCont();
    inline const SwLayoutFrame *FindBodyCont() const;
    void SetMaxFootnoteHeight( const SwTwips nNewMax ) { m_nMaxFootnoteHeight = nNewMax; }
 
    // footnote interface
    void AppendFootnote( SwContentFrame *, SwTextFootnote * );
    bool RemoveFootnote(const SwContentFrame *, const SwTextFootnote *, bool bPrep = true);
    static       SwFootnoteFrame     *FindFootnote( const SwContentFrame *, const SwTextFootnote * );
                 SwFootnoteContFrame *FindFootnoteCont();
    inline const SwFootnoteContFrame *FindFootnoteCont() const;
           const SwFootnoteFrame     *FindFirstFootnote( SwContentFrame const * ) const;
                 SwFootnoteContFrame *FindNearestFootnoteCont( bool bDontLeave = false );
 
    static void ChangeFootnoteRef( const SwContentFrame *pOld, const SwTextFootnote *,
                       SwContentFrame *pNew );
    void RearrangeFootnotes( const SwTwips nDeadLine, const bool bLock,
                        const SwTextFootnote *pAttr = nullptr );
 
    // Set DeadLine (in document coordinates) so that the text formatter can
    // temporarily limit footnote height.
    void    SetFootnoteDeadLine( const SwTwips nDeadLine );
    SwTwips GetMaxFootnoteHeight() const { return m_nMaxFootnoteHeight; }
 
    // returns value for remaining space until the body reaches minimal height
    SwTwips GetVarSpace() const;
 
    // methods needed for layouting
    // The parameter <_bCollectOnlyPreviousFootnotes> controls if only footnotes
    // that are positioned before the this footnote boss-frame have to be
    // collected.
    void    CollectFootnotes( const SwContentFrame* _pRef,
                         SwFootnoteBossFrame*     _pOld,
                         SwFootnoteFrames&        _rFootnoteArr,
                         const bool    _bCollectOnlyPreviousFootnotes = false );
    void    MoveFootnotes_( SwFootnoteFrames &rFootnoteArr, bool bCalc = false );
    void    MoveFootnotes( const SwContentFrame *pSrc, SwContentFrame *pDest,
                      SwTextFootnote const *pAttr );
 
    // should AdjustNeighbourhood be called (or Grow/Shrink)?
    SwNeighbourAdjust NeighbourhoodAdjustment() const
        { return IsPageFrame() ? SwNeighbourAdjust::OnlyAdjust : NeighbourhoodAdjustment_(); }
};
 
inline const SwLayoutFrame *SwFootnoteBossFrame::FindBodyCont() const
{
    return const_cast<SwFootnoteBossFrame*>(this)->FindBodyCont();
}
 
inline const SwFootnoteContFrame *SwFootnoteBossFrame::FindFootnoteCont() const
{
    return const_cast<SwFootnoteBossFrame*>(this)->FindFootnoteCont();
}
 
#endif
 
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