1 /*  GRAPHITE2 LICENSING
2 
3     Copyright 2010, SIL International
4     All rights reserved.
5 
6     This library is free software; you can redistribute it and/or modify
7     it under the terms of the GNU Lesser General Public License as published
8     by the Free Software Foundation; either version 2.1 of License, or
9     (at your option) any later version.
10 
11     This program is distributed in the hope that it will be useful,
12     but WITHOUT ANY WARRANTY; without even the implied warranty of
13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14     Lesser General Public License for more details.
15 
16     You should also have received a copy of the GNU Lesser General Public
17     License along with this library in the file named "LICENSE".
18     If not, write to the Free Software Foundation, 51 Franklin Street,
19     Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
20     internet at http://www.fsf.org/licenses/lgpl.html.
21 
22 Alternatively, the contents of this file may be used under the terms of the
23 Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public
24 License, as published by the Free Software Foundation, either version 2
25 of the License or (at your option) any later version.
26 */
27 #pragma once
28 
29 #include "inc/Main.h"
30 #include "inc/Face.h"
31 
32 namespace graphite2 {
33 
34 class Face;
35 
36 class Cmap
37 {
38 public:
39 
~Cmap()40     virtual ~Cmap() throw() {}
41 
throw()42     virtual uint16 operator [] (const uint32) const throw() { return 0; }
43 
throw()44     virtual operator bool () const throw() { return false; }
45 
46     CLASS_NEW_DELETE;
47 };
48 
49 class DirectCmap : public Cmap
50 {
51     DirectCmap(const DirectCmap &);
52     DirectCmap & operator = (const DirectCmap &);
53 
54 public:
55     DirectCmap(const Face &);
56     virtual uint16 operator [] (const uint32 usv) const throw();
57     virtual operator bool () const throw();
58 
59     CLASS_NEW_DELETE;
60 private:
61     const Face::Table   _cmap;
62     const void        * _smp,
63                       * _bmp;
64 };
65 
66 class CachedCmap : public Cmap
67 {
68     CachedCmap(const CachedCmap &);
69     CachedCmap & operator = (const CachedCmap &);
70 
71 public:
72     CachedCmap(const Face &);
73     virtual ~CachedCmap() throw();
74     virtual uint16 operator [] (const uint32 usv) const throw();
75     virtual operator bool () const throw();
76     CLASS_NEW_DELETE;
77 private:
78     bool m_isBmpOnly;
79     uint16 ** m_blocks;
80 };
81 
82 } // namespace graphite2
83