harfbuzz/src/graphite2/src/inc/CmapCache.h

60 lines
1.2 KiB
C++

// SPDX-License-Identifier: MIT
// Copyright 2010, SIL International, All rights reserved.
#pragma once
#include "inc/Main.h"
#include "inc/Face.h"
namespace graphite2 {
class Face;
class Cmap
{
public:
virtual ~Cmap() throw() {}
virtual uint16_t operator [] (const uint32_t) const throw() { return 0; }
virtual operator bool () const throw() { return false; }
CLASS_NEW_DELETE;
};
class DirectCmap : public Cmap
{
DirectCmap(const DirectCmap &);
DirectCmap & operator = (const DirectCmap &);
public:
DirectCmap(const Face &);
virtual uint16_t operator [] (const uint32_t usv) const throw();
virtual operator bool () const throw();
CLASS_NEW_DELETE;
private:
const Face::Table _cmap;
const void * _smp,
* _bmp;
};
class CachedCmap : public Cmap
{
CachedCmap(const CachedCmap &);
CachedCmap & operator = (const CachedCmap &);
public:
CachedCmap(const Face &);
virtual ~CachedCmap() throw();
virtual uint16_t operator [] (const uint32_t usv) const throw();
virtual operator bool () const throw();
CLASS_NEW_DELETE;
private:
bool m_isBmpOnly;
uint16_t ** m_blocks;
};
} // namespace graphite2