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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef _ACCPORTIONS_HXX
#define _ACCPORTIONS_HXX
#include <SwPortionHandler.hxx>
#include <sal/types.h>
#include <rtl/ustrbuf.hxx>
#include <vector>
class String;
class SwTxtNode;
struct SwSpecialPos;
class SwViewOption;
namespace com { namespace sun { namespace star {
namespace i18n { struct Boundary; }
} } }
/**
* collect text portion data from the layout through SwPortionHandler interface
*/
class SwAccessiblePortionData : public SwPortionHandler
{
// the node this portion is referring to
const SwTxtNode* pTxtNode;
// variables used while collecting the data
rtl::OUStringBuffer aBuffer;
sal_Int32 nModelPosition;
sal_Bool bFinished;
const SwViewOption* pViewOptions;
// the accessible string
rtl::OUString sAccessibleString;
// positions array
// instances of Position_t must always include the minimum and
// maximum positions as first/last elements (to simplify the
// algorithms)
typedef std::vector<sal_Int32> Positions_t;
Positions_t aLineBreaks; /// position of line breaks
Positions_t aModelPositions; /// position of portion breaks in the model
Positions_t aAccessiblePositions; /// portion breaks in sAccessibleString
typedef std::vector<sal_uInt8> PortionAttrs_t;
PortionAttrs_t aPortionAttrs; /// additional portion attributes
Positions_t* pSentences; /// positions of sentence breaks
size_t nBeforePortions; /// # of portions before first model character
sal_Bool bLastIsSpecial; /// set if last portion was 'Special()'
/// returns the index of the first position whose value is smaller
/// or equal, and whose following value is equal or larger
size_t FindBreak( const Positions_t& rPositions, sal_Int32 nValue ) const;
/// like FindBreak, but finds the last equal or larger position
size_t FindLastBreak( const Positions_t& rPositions, sal_Int32 nValue ) const;
/// fill the boundary with the values from rPositions[nPos]
void FillBoundary(com::sun::star::i18n::Boundary& rBound,
const Positions_t& rPositions,
size_t nPos ) const;
/// Access to portion attributes
sal_Bool IsPortionAttrSet( size_t nPortionNo, sal_uInt8 nAttr ) const;
sal_Bool IsSpecialPortion( size_t nPortionNo ) const;
sal_Bool IsReadOnlyPortion( size_t nPortionNo ) const;
sal_Bool IsGrayPortionType( sal_uInt16 nType ) const;
// helper method for GetEditableRange(...):
void AdjustAndCheck( sal_Int32 nPos, size_t& nPortionNo,
sal_uInt16& nCorePos, sal_Bool& bEdit ) const;
public:
SwAccessiblePortionData( const SwTxtNode* pTxtNd,
const SwViewOption* pViewOpt = NULL );
virtual ~SwAccessiblePortionData();
// SwPortionHandler methods
virtual void Text(sal_uInt16 nLength, sal_uInt16 nType);
virtual void Special(sal_uInt16 nLength, const String& rText, sal_uInt16 nType);
virtual void LineBreak();
virtual void Skip(sal_uInt16 nLength);
virtual void Finish();
// access to the portion data
/// get the text string, as presented by the layout
const rtl::OUString& GetAccessibleString() const;
/// get the start & end positions of the sentence
void GetLineBoundary( com::sun::star::i18n::Boundary& rBound,
sal_Int32 nPos ) const;
// get start and end position of the last line
void GetLastLineBoundary( com::sun::star::i18n::Boundary& rBound ) const;
// #i89175#
sal_Int32 GetLineCount() const;
sal_Int32 GetLineNo( const sal_Int32 nPos ) const;
void GetBoundaryOfLine( const sal_Int32 nLineNo,
com::sun::star::i18n::Boundary& rLineBound );
/// get the position in the model string for a given
/// (accessibility) position
sal_uInt16 GetModelPosition( sal_Int32 nPos ) const;
/// get the position in the accessibility string for a given model position
sal_Int32 GetAccessiblePosition( sal_uInt16 nPos ) const;
/// fill a SwSpecialPos structure, suitable for calling
/// SwTxtFrm->GetCharRect
/// Returns the core position, and fills thr rpPos either with NULL or
/// with the &rPos, after putting the appropriate data into it.
sal_uInt16 FillSpecialPos( sal_Int32 nPos,
SwSpecialPos& rPos,
SwSpecialPos*& rpPos ) const;
// get boundaries of words/sentences. The data structures are
// created on-demand.
void GetSentenceBoundary( com::sun::star::i18n::Boundary& rBound,
sal_Int32 nPos );
// get (a) boundary for attribut change
void GetAttributeBoundary( com::sun::star::i18n::Boundary& rBound,
sal_Int32 nPos ) const;
/// Convert start and end positions into core positions.
/// @returns true if 'special' portions are included either completely
/// or not at all. This can be used to test whether editing
/// that range would be legal
sal_Bool GetEditableRange( sal_Int32 nStart, sal_Int32 nEnd,
sal_uInt16& nCoreStart, sal_uInt16& nCoreEnd ) const;
/// Determine whether this core position is valid for these portions.
/// (A paragraph may be split into several frames, e.g. at page
/// boundaries. In this case, only part of a paragraph is represented
/// through this object. This method determines whether one particular
/// position is valid for this object or not.)
sal_Bool IsValidCorePosition( sal_uInt16 nPos ) const;
sal_uInt16 GetFirstValidCorePosition() const;
sal_uInt16 GetLastValidCorePosition() const;
};
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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