c7482bc290
This introduces a potential performance regression, because FindCmap works on the existing font tables and just sets up a lookup function, while ParseCMAP creates some optimized, in-memory lookup table, which needs a bit more work, but is faster in its usage, I think. At least the initial usage is faster the old way, as the CMAPs aren't decoded at all. As you can see, the old code is just used on Windows and MacOS / iOS. Deep in the bowels of the PrintFontManager, the CMAP is also decoded using ParseCMAP... So I'm not sure this potential regression really exists. Most fonts will already have a decoded CMAP, so my guess is this is actually faster in the end. No idea, how to measure. Change-Id: I52caac1264cd3ff11a2a3fa6e9c800f67f146a79 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/102685 Tested-by: Jenkins Reviewed-by: Jan-Marek Glogowski <glogow@fbihome.de>
59 lines
2.1 KiB
C++
59 lines
2.1 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 INCLUDED_VCL_INC_IMPFONTCHARMAP_HXX
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#define INCLUDED_VCL_INC_IMPFONTCHARMAP_HXX
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#include <tools/ref.hxx>
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#include <vcl/dllapi.h>
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class ImplFontCharMap;
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typedef tools::SvRef<ImplFontCharMap> ImplFontCharMapRef;
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class CmapResult;
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class ImplFontCharMap : public SvRefBase
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{
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public:
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explicit ImplFontCharMap( const CmapResult& );
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virtual ~ImplFontCharMap() override;
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private:
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friend class FontCharMap;
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ImplFontCharMap( const ImplFontCharMap& ) = delete;
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void operator=( const ImplFontCharMap& ) = delete;
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static ImplFontCharMapRef const & getDefaultMap( bool bSymbols=false);
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bool isDefaultMap() const;
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private:
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const sal_uInt32* mpRangeCodes; // pairs of StartCode/(EndCode+1)
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const int* mpStartGlyphs; // range-specific mapper to glyphs
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const sal_uInt16* mpGlyphIds; // individual glyphid mappings
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int mnRangeCount;
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int mnCharCount; // covered codepoints
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const bool m_bSymbolic;
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};
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bool VCL_DLLPUBLIC ParseCMAP( const unsigned char* pRawData, int nRawLength, CmapResult& );
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#endif // INCLUDED_VCL_INC_IMPFONTCHARMAP_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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