icuSources/samples/layout/FontTableCache.h

   1 /*
   2  *************************************************************************
   3  *   © 2016 and later: Unicode, Inc. and others.
   4  *   License & terms of use: http://www.unicode.org/copyright.html#License
   5  *************************************************************************
   6  **********************************************************************
   7  *   Copyright (C) 2003-2008, International Business Machines
   8  *   Corporation and others.  All Rights Reserved.
   9  **********************************************************************
  10  */
  11
  12 #ifndef __FONTTABLECACHE_H
  13
  14 #define __FONTTABLECACHE_H
  15
  16 #include "layout/LETypes.h"
  17
  18 struct FontTableCacheEntry;
  19
  20 class FontTableCache
  21 {
  22 public:
  23     FontTableCache();
  24
  25     virtual ~FontTableCache();
  26
  27     const void *find(LETag tableTag) const;
  28
  29 protected:
  30     virtual const void *readFontTable(LETag tableTag) const = 0;
  31     virtual void freeFontTable(const void *table) const;
  32
  33 private:
  34
  35     void add(LETag tableTag, const void *table);
  36
  37     FontTableCacheEntry *fTableCache;
  38     le_int32 fTableCacheCurr;
  39     le_int32 fTableCacheSize;
  40 };
  41
  42 #endif
  43