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+/* -*- 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: */