64 lines
1.6 KiB
C++
64 lines
1.6 KiB
C++
//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1991 - 1994.
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//
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// File: TSource.hxx
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//
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// Contents: TEXT_SOURCE implementation
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//
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// Classes: CTextSource
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//
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// History: 14-Apr-94 KyleP Created
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//
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//----------------------------------------------------------------------------
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#pragma once
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#include <pageman.hxx>
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class CSourceMapper;
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class CTextSource : public tagTEXT_SOURCE
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{
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public:
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CTextSource( IFilter * pFilter, STAT_CHUNK & Stat, CSourceMapper* pMapper = 0 );
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inline SCODE GetStatus();
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protected:
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CTextSource ( STAT_CHUNK & Stat)
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: _pFilter(0), _Stat(Stat), _sc(E_FAIL), _pMapper(0)
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{ pfnFillTextBuffer = 0; }
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static SCODE FillBuf( TEXT_SOURCE * pTextSource );
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IFilter * _pFilter; // Source of text
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SCODE _sc; // State of last call to IFilter.
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STAT_CHUNK & _Stat; // Current chunk info.
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CSourceMapper* _pMapper; // Maps current position into filter region
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WCHAR _awcFilterBuffer[PAGE_SIZE/sizeof(WCHAR)]; // For awcBuffer
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private:
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static void DebugPrintBuffer( CTextSource *pThis );
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};
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inline SCODE CTextSource::GetStatus()
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{
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//
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// WBREAK_E_END_OF_TEXT is not an error for clients of CTextSource. _sc
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// is set to this value to prevent further calls to fillbuf from doing
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// any damage.
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//
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if ( _sc == WBREAK_E_END_OF_TEXT )
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return S_OK;
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else
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return _sc;
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}
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