1 /*
2  * Copyright (C) 2007,2008   Alex Shulgin
3  *
4  * This file is part of png++ the C++ wrapper for libpng.  PNG++ is free
5  * software; the exact copying conditions are as follows:
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions are met:
9  *
10  * 1. Redistributions of source code must retain the above copyright notice,
11  * this list of conditions and the following disclaimer.
12  *
13  * 2. Redistributions in binary form must reproduce the above copyright
14  * notice, this list of conditions and the following disclaimer in the
15  * documentation and/or other materials provided with the distribution.
16  *
17  * 3. The name of the author may not be used to endorse or promote products
18  * derived from this software without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
23  * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
25  * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
26  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
27  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
28  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30  */
31 #ifndef PNGPP_END_INFO_HPP_INCLUDED
32 #define PNGPP_END_INFO_HPP_INCLUDED
33 
34 #include "info_base.hpp"
35 
36 namespace png
37 {
38 
39     /**
40      * \brief Internal class to hold PNG ending %info.
41      *
42      * \see info, info_base
43      */
44     class end_info
45         : public info_base
46     {
47     public:
end_info(io_base & io,png_struct * png)48         end_info(io_base& io, png_struct* png)
49             : info_base(io, png)
50         {
51         }
52 
destroy()53         void destroy()
54         {
55             assert(m_info);
56             png_destroy_info_struct(m_png, & m_info);
57         }
58 
read()59         void read()
60         {
61             png_read_end(m_png, m_info);
62         }
63 
write() const64         void write() const
65         {
66             png_write_end(m_png, m_info);
67         }
68 
69         // TODO: add methods to read/write text comments etc.
70     };
71 
72 } // namespace png
73 
74 #endif // PNGPP_END_INFO_HPP_INCLUDED
75