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Diffstat (limited to '')
| -rw-r--r-- | vcl/inc/fontsubset.hxx | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/vcl/inc/fontsubset.hxx b/vcl/inc/fontsubset.hxx new file mode 100644 index 000000000..2aed0a393 --- /dev/null +++ b/vcl/inc/fontsubset.hxx @@ -0,0 +1,97 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * 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_VCL_INC_FONTSUBSET_HXX +#define INCLUDED_VCL_INC_FONTSUBSET_HXX + +#include <rtl/ustring.hxx> +#include <tools/gen.hxx> +#include <o3tl/typed_flags_set.hxx> + +#include <vcl/dllapi.h> + +#include "glyphid.hxx" + +namespace vcl { class TrueTypeFont; } ///< SFT's idea of a TTF font + +enum class 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 +}; +namespace o3tl { + template<> struct typed_flags<FontType> : is_typed_flags<FontType, (1<<8)-1> {}; +} + +class VCL_DLLPUBLIC FontSubsetInfo final +{ +public: + explicit FontSubsetInfo(); + ~FontSubsetInfo(); + + void LoadFont( FontType eInFontType, + const unsigned char* pFontBytes, int nByteLength ); + void LoadFont( vcl::TrueTypeFont* pSftTrueTypeFont ); + + bool CreateFontSubset( FontType nOutFontTypeMask, + FILE* pOutFile, const char* pOutFontName, + const sal_GlyphId* pGlyphIds, const sal_uInt8* pEncodedIds, + int nReqGlyphCount, sal_Int32* pOutGlyphWidths = nullptr ); + +public: // TODO: make subsetter results private and provide accessor methods instead + // subsetter-provided subset details needed by e.g. Postscript or PDF + OUString m_aPSName; + int m_nAscent; ///< all metrics in PS font units + int m_nDescent; + int m_nCapHeight; + tools::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 + FontType mnReqFontTypeMask; ///< allowed subset-target font types + FILE* mpOutFile; + const char* mpReqFontName; + const sal_GlyphId* mpReqGlyphIds; + const sal_uInt8* mpReqEncodedIds; + int mnReqGlyphCount; + + bool CreateFontSubsetFromCff( sal_Int32* pOutGlyphWidths ); + bool CreateFontSubsetFromSfnt( sal_Int32* pOutGlyphWidths ); + static bool CreateFontSubsetFromType1( const sal_Int32* pOutGlyphWidths ); +}; + +int VCL_DLLPUBLIC TestFontSubset(const void* data, sal_uInt32 size); + +#endif // INCLUDED_VCL_INC_FONTSUBSET_HXX + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |