png++ 0.2.10

index_pixel.hpp
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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
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29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31#ifndef PNGPP_INDEX_PIXEL_HPP_INCLUDED
32#define PNGPP_INDEX_PIXEL_HPP_INCLUDED
33
34#include "types.hpp"
35#include "packed_pixel.hpp"
36#include "pixel_traits.hpp"
37
38 namespace png
39{
40
44 class index_pixel
45 {
46 public:
47 index_pixel(byte index = 0)
48 : m_index(index)
49 {
50 }
51
52 operator byte() const
53 {
54 return m_index;
55 }
56
57 private:
58 byte m_index;
59 };
60
65 template< int bits >
66 class packed_index_pixel
67 : public packed_pixel< bits >
68 {
69 public:
70 packed_index_pixel(byte value = 0)
71 : packed_pixel< bits >(value)
72 {
73 }
74 };
75
79 typedef packed_index_pixel< 1 > index_pixel_1;
80
84 typedef packed_index_pixel< 2 > index_pixel_2;
85
89 typedef packed_index_pixel< 4 > index_pixel_4;
90
94 template<>
95 struct pixel_traits< index_pixel >
96 : basic_pixel_traits< index_pixel, byte, color_type_palette >
97 {
98 };
99
103 template< int bits >
104 struct pixel_traits< packed_index_pixel< bits > >
105 : basic_pixel_traits< packed_index_pixel< bits >, byte,
106 color_type_palette, /* channels = */ 1, bits >
107 {
108 };
109
110} // namespace png
111
112#endif // PNGPP_INDEX_PIXEL_HPP_INCLUDED
png::index_pixel
The 8-bit Indexed (colormap) pixel type.
Definition index_pixel.hpp:45
png::index_pixel::index_pixel
index_pixel(byte index=0)
Definition index_pixel.hpp:47
png::packed_index_pixel< 1 >
png::packed_index_pixel::packed_index_pixel
packed_index_pixel(byte value=0)
Definition index_pixel.hpp:70
png::packed_pixel::packed_pixel
packed_pixel(byte value=0)
Definition packed_pixel.hpp:58
png
Definition color.hpp:37
png::index_pixel_4
packed_index_pixel< 4 > index_pixel_4
The 1-bit Indexed pixel type.
Definition index_pixel.hpp:89
png::index_pixel_2
packed_index_pixel< 2 > index_pixel_2
The 1-bit Indexed pixel type.
Definition index_pixel.hpp:84
png::byte
png_byte byte
Definition types.hpp:39
png::index_pixel_1
packed_index_pixel< 1 > index_pixel_1
The 1-bit Indexed pixel type.
Definition index_pixel.hpp:79
packed_pixel.hpp
pixel_traits.hpp
png::basic_pixel_traits
Basic pixel traits class template.
Definition pixel_traits.hpp:62
png::pixel_traits
Pixel traits class template.
Definition pixel_traits.hpp:48
types.hpp