libreoffice/sw/source/core/layout/objectformattertxtfrm.hxx

/*************************************************************************
 *
 *  $RCSfile: objectformattertxtfrm.hxx,v $
 *
 *  $Revision: 1.2 $
 *
 *  last change: $Author: kz $ $Date: 2004-08-02 14:11:58 $
 *
 *  The Contents of this file are made available subject to the terms of
 *  either of the following licenses
 *
 *         - GNU Lesser General Public License Version 2.1
 *         - Sun Industry Standards Source License Version 1.1
 *
 *  Sun Microsystems Inc., October, 2000
 *
 *  GNU Lesser General Public License Version 2.1
 *  =============================================
 *  Copyright 2000 by Sun Microsystems, Inc.
 *  901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
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 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
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 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *  MA  02111-1307  USA
 *
 *
 *  Sun Industry Standards Source License Version 1.1
 *  =================================================
 *  The contents of this file are subject to the Sun Industry Standards
 *  Source License Version 1.1 (the "License"); You may not use this file
 *  except in compliance with the License. You may obtain a copy of the
 *  License at http://www.openoffice.org/license.html.
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 *  See the License for the specific provisions governing your rights and
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 *  The Initial Developer of the Original Code is: Sun Microsystems, Inc.
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 *  Copyright: 2000 by Sun Microsystems, Inc.
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 *  All Rights Reserved.
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 ************************************************************************/
#ifndef _OBJECTFORMATTERTXTFRM_HXX
#define _OBJECTFORMATTERTXTFRM_HXX

#ifndef _OBJECTFORMATTER_HXX
#include <objectformatter.hxx>
#endif
#ifndef _SAL_TYPES_H_
#include <sal/types.h>
#endif

class SwTxtFrm;

// -----------------------------------------------------------------------------
// OD 2004-07-01 #i28701#
// Format floating screen objects, which are anchored at a given anchor text frame
// and registered at the given page frame.
// -----------------------------------------------------------------------------
class SwObjectFormatterTxtFrm : public SwObjectFormatter
{
    private:
        // anchor text frame
        SwTxtFrm& mrAnchorTxtFrm;

        // 'master' anchor text frame
        SwTxtFrm* mpMasterAnchorTxtFrm;

        SwObjectFormatterTxtFrm( SwTxtFrm& _rAnchorTxtFrm,
                                 const SwPageFrm& _rPageFrm,
                                 SwTxtFrm* _pMasterAnchorTxtFrm,
                                 SwLayAction* _pLayAction );

        /* method to invalidate objects, anchored previous to given object at
           the anchor text frame

            @param _rAnchoredObj
            reference to anchored object - objects, anchored previous to
            this one will be invalidated.

            @author OD
        */
        void _InvalidatePrevObjs( SwAnchoredObject& _rAnchoredObj );

        /* method to invalidate objects, anchored after the given object at
           the page frame

            @param _rAnchoredObj
            reference to anchored object - objects, anchored after this one will
            be invalidated.

            @param _bInclObj
            boolean indicates, if given anchored object <_rAnchoredObj> also have
            to be invalidated.

            @author OD
        */
        void _InvalidateFollowObjs( SwAnchoredObject& _rAnchoredObj,
                                    const bool _bInclObj );

        /** method to determine first anchored object, whose 'anchor is moved
            forward', anchored at the anchor text frame

            'anchor (of an object) is moved forward', if the anchor frame
            respectively the anchor character of the object isn't on the
            proposed page frame. Instead its on a following page

            @author OD

            @param _nWrapInfluenceOnPosition
            input parameter - only object with this given wrapping style
            influence are investigated.

            @param _nFromPageNum
            input parameter - number of page frame, the 'anchor' should be

            @param _noToPageNum
            output parameter - number of page frame, the 'anchor' of the returned
            anchored object is.

            @return SwAnchoredObject*
            anchored object with a 'moved forward anchor'. If NULL, no such
            anchored object is found.
        */
        SwAnchoredObject* _GetFirstObjWithMovedFwdAnchor(
                                    const sal_Int16 _nWrapInfluenceOnPosition,
                                    sal_uInt32& _noToPageNum );
    protected:

        virtual SwFrm& GetAnchorFrm();

    public:
        virtual ~SwObjectFormatterTxtFrm();

        virtual bool DoFormatObj( SwAnchoredObject& _rAnchoredObj );
        virtual bool DoFormatObjs();

        /** method to create an instance of <SwObjectFormatterTxtFrm> is
            necessary.

            @author OD
        */
        static SwObjectFormatterTxtFrm* CreateObjFormatter(
                                                SwTxtFrm& _rAnchorTxtFrm,
                                                const SwPageFrm& _rPageFrm,
                                                SwLayAction* _pLayAction );
};

#endif