libreoffice/svx/source/table/tablelayouter.hxx

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
 */

#ifndef INCLUDED_SVX_SOURCE_TABLE_TABLELAYOUTER_HXX
#define INCLUDED_SVX_SOURCE_TABLE_TABLELAYOUTER_HXX

#include <com/sun/star/container/XIndexAccess.hpp>
#include <com/sun/star/text/WritingMode.hpp>
#include <com/sun/star/table/XTable.hpp>
#include <sal/types.h>
#include <basegfx/range/b2irectangle.hxx>
#include <basegfx/tuple/b2ituple.hxx>
#include <boost/shared_ptr.hpp>
#include <vector>
#include <map>

#include "svx/svdotable.hxx"

class Rectangle;



namespace editeng {
    class SvxBorderLine;
}

namespace sdr { namespace table {

/** returns true if the cell(nMergedCol,nMergedRow) is merged with other cells.
    the returned cell( rOriginCol, rOriginRow ) is the origin( top left cell ) of the merge.
*/
bool findMergeOrigin( const TableModelRef& xTable, sal_Int32 nMergedCol, sal_Int32 nMergedRow, sal_Int32& rOriginCol, sal_Int32& rOriginRow );

typedef std::vector< editeng::SvxBorderLine* > BorderLineVector;
typedef std::vector< BorderLineVector > BorderLineMap;


// TableModel


class TableLayouter
{
public:
    TableLayouter( const TableModelRef& xTableModel );
    virtual ~TableLayouter();

    /** try to fit the table into the given rectangle.
        If the rectangle is to small, it will be grown to fit the table.

        if bFitWidth or bFitHeight is set, the layouter tries to scale
        the rows and/or columns to the given area. The result my be bigger
        to fulfill constrains.

        if bFitWidth or bFitHeight is set, the model is changed.
    */
    void LayoutTable( ::Rectangle& rRectangle, bool bFitWidth, bool bFitHeight );

    void UpdateBorderLayout();

    bool getCellArea( const CellRef& xCell, const CellPos& rPos, basegfx::B2IRectangle& rArea ) const;

    ::sal_Int32 getRowCount() const { return static_cast< ::sal_Int32 >( maRows.size() ); }
    ::sal_Int32 getColumnCount() const { return static_cast< ::sal_Int32 >( maColumns.size() ); }
    sal_Int32 getRowHeight( sal_Int32 nRow ) const;

    sal_Int32 getColumnWidth( sal_Int32 nColumn ) const;

    sal_Int32 getMinimumColumnWidth( sal_Int32 nColumn );

    /** checks if the given edge is visible.
        Edges between merged cells are not visible.
    */
    bool isEdgeVisible( sal_Int32 nEdgeX, sal_Int32 nEdgeY, bool bHorizontal ) const;

    /** returns the requested borderline in rpBorderLine or a null pointer if there is no border at this edge */
    editeng::SvxBorderLine* getBorderLine( sal_Int32 nEdgeX, sal_Int32 nEdgeY, bool bHorizontal )const;

    void updateCells( ::Rectangle& rRectangle );

    sal_Int32 getHorizontalEdge( int nEdgeY, sal_Int32* pnMin = 0, sal_Int32* pnMax = 0 );
    sal_Int32 getVerticalEdge( int nEdgeX , sal_Int32* pnMin = 0, sal_Int32* pnMax = 0);

    void DistributeColumns( ::Rectangle& rArea, sal_Int32 nFirstCol, sal_Int32 nLastCol );
    void DistributeRows( ::Rectangle& rArea, sal_Int32 nFirstRow, sal_Int32 nLastRow );

private:
    CellRef getCell( const CellPos& rPos ) const;
    basegfx::B2ITuple getCellSize( const CellRef& xCell, const CellPos& rPos ) const;

    void LayoutTableWidth( ::Rectangle& rArea, bool bFit );
    void LayoutTableHeight( ::Rectangle& rArea, bool bFit );

    inline bool isValidColumn( sal_Int32 nColumn ) const { return (nColumn >= 0) && (nColumn < static_cast<sal_Int32>( maColumns.size())); }
    inline bool isValidRow( sal_Int32 nRow ) const { return (nRow >= 0) && (nRow < static_cast<sal_Int32>( maRows.size())); }
    inline bool isValid( const CellPos& rPos ) const { return isValidColumn( rPos.mnCol ) && isValidRow( rPos.mnRow ); }

    void ClearBorderLayout();
    void ClearBorderLayout(BorderLineMap& rMap);
    void ResizeBorderLayout();
    void ResizeBorderLayout( BorderLineMap& rMap );

    void SetBorder( sal_Int32 nCol, sal_Int32 nRow, bool bHorizontal, const editeng::SvxBorderLine* pLine );

    static bool HasPriority( const editeng::SvxBorderLine* pThis, const editeng::SvxBorderLine* pOther );

    struct Layout
    {
        sal_Int32 mnPos;
        sal_Int32 mnSize;
        sal_Int32 mnMinSize;

        Layout() : mnPos( 0 ), mnSize( 0 ), mnMinSize( 0 ) {}
        void clear() { mnPos = 0; mnSize = 0; mnMinSize = 0; }
    };
    typedef std::vector< Layout > LayoutVector;

    sal_Int32 distribute( LayoutVector& rLayouts, sal_Int32 nDistribute );

    TableModelRef mxTable;
    LayoutVector maRows;
    LayoutVector maColumns;

    BorderLineMap maHorizontalBorders;
    BorderLineMap maVerticalBorders;

    const OUString msSize;
};

} }

#endif

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