92 lines
3.6 KiB
C++
92 lines
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef _SV_FONTSUBSET_HXX
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#define _SV_FONTSUBSET_HXX
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#include <tools/gen.hxx>
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#include <tools/string.hxx>
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#include <cstdio>
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#include "vcl/dllapi.h"
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namespace vcl { struct _TrueTypeFont; } // SFT's idea of a TTF font
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class VCL_DLLPUBLIC FontSubsetInfo
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{
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public:
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explicit FontSubsetInfo( void );
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virtual ~FontSubsetInfo( void );
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enum FontType {
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NO_FONT = 0,
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SFNT_TTF = 1<<1, // SFNT container with TrueType glyphs
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SFNT_CFF = 1<<2, // SFNT container with CFF-container
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TYPE1_PFA = 1<<3, // PSType1 Postscript Font Ascii
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TYPE1_PFB = 1<<4, // PSType1 Postscript Font Binary
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CFF_FONT = 1<<5, // CFF-container with PSType2 glyphs
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TYPE3_FONT = 1<<6, // PSType3 Postscript font
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TYPE42_FONT = 1<<7, // PSType42 wrapper for an SFNT_TTF
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ANY_SFNT = SFNT_TTF | SFNT_CFF,
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ANY_TYPE1 = TYPE1_PFA | TYPE1_PFB,
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ANY_FONT = 0xFF
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};
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bool LoadFont( FontType eInFontType,
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const unsigned char* pFontBytes, int nByteLength );
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bool LoadFont( vcl::_TrueTypeFont* pSftTrueTypeFont );
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bool CreateFontSubset( int nOutFontTypeMask,
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FILE* pOutFile, const char* pOutFontName,
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const long* pReqGlyphIds, const sal_uInt8* pEncodedIds,
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int nReqGlyphCount, sal_Int32* pOutGlyphWidths = NULL );
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public: // TODO: make subsetter results private and provide accessor methods instead
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// subsetter-provided subset details needed by e.g. Postscript or PDF
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String m_aPSName;
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int m_nAscent; // all metrics in PS font units
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int m_nDescent;
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int m_nCapHeight;
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Rectangle m_aFontBBox;
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FontType m_nFontType; // font-type of subset result
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private:
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// input-font-specific details
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unsigned const char* mpInFontBytes;
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int mnInByteLength;
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FontType meInFontType; // allowed mask of input font-types
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vcl::_TrueTypeFont* mpSftTTFont;
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// subset-request details
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int mnReqFontTypeMask; // allowed subset-target font types
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FILE* mpOutFile;
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const char* mpReqFontName;
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const long* mpReqGlyphIds;
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const sal_uInt8* mpReqEncodedIds;
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int mnReqGlyphCount;
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protected:
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bool CreateFontSubsetFromCff( sal_Int32* pOutGlyphWidths = NULL );
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bool CreateFontSubsetFromSfnt( sal_Int32* pOutGlyphWidths = NULL );
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bool CreateFontSubsetFromType1( sal_Int32* pOutGlyphWidths = NULL );
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};
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#endif // _SV_FONTSUBSET_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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