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/**************************************************************
*
* 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
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*************************************************************/
#ifndef _SV_FONTSUBSET_HXX
#define _SV_FONTSUBSET_HXX
#include <tools/gen.hxx>
#include <tools/string.hxx>
#include <cstdio>
#include "vcl/dllapi.h"
namespace vcl { struct _TrueTypeFont; } // SFT's idea of a TTF font
class VCL_DLLPUBLIC FontSubsetInfo
{
public:
explicit FontSubsetInfo( void );
virtual ~FontSubsetInfo( void );
enum FontType {
NO_FONT = 0,
SFNT_TTF = 1<<1, // SFNT container with TrueType glyphs
SFNT_CFF = 1<<2, // SFNT container with CFF-container
TYPE1_PFA = 1<<3, // PSType1 Postscript Font Ascii
TYPE1_PFB = 1<<4, // PSType1 Postscript Font Binary
CFF_FONT = 1<<5, // CFF-container with PSType2 glyphs
TYPE3_FONT = 1<<6, // PSType3 Postscript font
TYPE42_FONT = 1<<7, // PSType42 wrapper for an SFNT_TTF
ANY_SFNT = SFNT_TTF | SFNT_CFF,
ANY_TYPE1 = TYPE1_PFA | TYPE1_PFB,
ANY_FONT = 0xFF
};
bool LoadFont( FontType eInFontType,
const unsigned char* pFontBytes, int nByteLength );
bool LoadFont( vcl::_TrueTypeFont* pSftTrueTypeFont );
bool CreateFontSubset( int nOutFontTypeMask,
FILE* pOutFile, const char* pOutFontName,
const long* pReqGlyphIds, const sal_uInt8* pEncodedIds,
int nReqGlyphCount, sal_Int32* pOutGlyphWidths = NULL );
public: // TODO: make subsetter results private and provide accessor methods instead
// subsetter-provided subset details needed by e.g. Postscript or PDF
String m_aPSName;
int m_nAscent; // all metrics in PS font units
int m_nDescent;
int m_nCapHeight;
Rectangle m_aFontBBox;
FontType m_nFontType; // font-type of subset result
private:
// input-font-specific details
unsigned const char* mpInFontBytes;
int mnInByteLength;
FontType meInFontType; // allowed mask of input font-types
vcl::_TrueTypeFont* mpSftTTFont;
// subset-request details
int mnReqFontTypeMask; // allowed subset-target font types
FILE* mpOutFile;
const char* mpReqFontName;
const long* mpReqGlyphIds;
const sal_uInt8* mpReqEncodedIds;
int mnReqGlyphCount;
protected:
bool CreateFontSubsetFromCff( sal_Int32* pOutGlyphWidths = NULL );
bool CreateFontSubsetFromSfnt( sal_Int32* pOutGlyphWidths = NULL );
bool CreateFontSubsetFromType1( sal_Int32* pOutGlyphWidths = NULL );
};
#endif // _SV_FONTSUBSET_HXX
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