office-gobmx/include/vcl/glyphitem.hxx
Luboš Luňák d697e792c5 optimize SalLayoutGlyphs for the common case
This should reduce memory usage (libstdc++ vector is 3 int's and
allocates dynamically). The usual case should be no font fallback.

Change-Id: I2e7981c0962f4f417fd024e3c27f01bc2a71127e
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/112591
Tested-by: Jenkins
Reviewed-by: Luboš Luňák <l.lunak@collabora.com>
2021-03-17 22:49:57 +01:00

58 lines
1.9 KiB
C++

/* -*- 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_GLYPHITEM_HXX
#define INCLUDED_VCL_GLYPHITEM_HXX
#include <sal/types.h>
#include <vcl/dllapi.h>
#include <vector>
typedef sal_uInt16 sal_GlyphId;
class SalLayoutGlyphsImpl;
class VCL_DLLPUBLIC SalLayoutGlyphs final
{
SalLayoutGlyphsImpl* m_pImpl = nullptr;
// Extra items are in a dynamically allocated vector in order to save memory.
// The usual case should be that this stays unused (it should be only used
// when font fallback takes place).
std::vector<SalLayoutGlyphsImpl*>* m_pExtraImpls = nullptr;
public:
SalLayoutGlyphs() = default;
SalLayoutGlyphs(const SalLayoutGlyphs&) = delete;
SalLayoutGlyphs(SalLayoutGlyphs&&);
~SalLayoutGlyphs();
SalLayoutGlyphs& operator=(const SalLayoutGlyphs&) = delete;
SalLayoutGlyphs& operator=(SalLayoutGlyphs&&);
SalLayoutGlyphsImpl* Impl(unsigned int nLevel) const;
void AppendImpl(SalLayoutGlyphsImpl* pImpl);
bool IsValid() const;
void Invalidate();
};
#endif // INCLUDED_VCL_GLYPHITEM_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */