ICU-66108.tar.gz

[apple/icu.git] / icuSources / samples / layout / FontTableCache.h

/*
 *************************************************************************
 *   © 2016 and later: Unicode, Inc. and others.
 *   License & terms of use: http://www.unicode.org/copyright.html#License
 *************************************************************************
 **********************************************************************
 *   Copyright (C) 2003-2008, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 **********************************************************************
 */

#ifndef __FONTTABLECACHE_H

#define __FONTTABLECACHE_H

#include "layout/LETypes.h"

struct FontTableCacheEntry;

class FontTableCache
{
public:
    FontTableCache();

    virtual ~FontTableCache();

    const void *find(LETag tableTag) const;

protected:
    virtual const void *readFontTable(LETag tableTag) const = 0;
    virtual void freeFontTable(const void *table) const;

private:

    void add(LETag tableTag, const void *table);

    FontTableCacheEntry *fTableCache;
    le_int32 fTableCacheCurr;
    le_int32 fTableCacheSize;
};

#endif