1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
// vim: set tabstop=4 shiftwidth=4 noexpandtab
/* -*- c++ -*-
* gimp.h: Header for a TQt 3 plug-in for reading GIMP XCF image files
* Copyright (C) 2001 lignum Computing, Inc. <[email protected]>
*
* This plug-in is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
/*
* These are the constants and functions I extracted from The GIMP source
* code. If the reader fails to work, this is probably the place to start
* looking for discontinuities.
*/
// From GIMP "tile.h" v1.2
const uint TILE_WIDTH = 64; //!< Width of a tile in the XCF file.
const uint TILE_HEIGHT = 64; //!< Height of a tile in the XCF file.
// From GIMP "paint_funcs.c" v1.2
const int RANDOM_TABLE_SIZE = 4096; //!< Size of dissolve random number table.
const int RANDOM_SEED = 314159265; //!< Seed for dissolve random number table.
const double EPSILON = 0.0001; //!< Roundup in alpha blending.
// From GIMP "paint_funcs.h" v1.2
const uchar OPAQUE_OPACITY = 255; //!< Opaque value for 8-bit alpha component.
// From GIMP "apptypes.h" v1.2
//! Basic GIMP image type. TQImage converter may produce a deeper image
//! than is specified here. For example, a grayscale image with an
//! alpha channel must (currently) use a 32-bit TQt image.
typedef enum
{
RGB,
GRAY,
INDEXED
} GimpImageBaseType;
//! Type of individual layers in an XCF file.
typedef enum
{
RGB_GIMAGE,
RGBA_GIMAGE,
GRAY_GIMAGE,
GRAYA_GIMAGE,
INDEXED_GIMAGE,
INDEXEDA_GIMAGE
} GimpImageType;
//! Effect to apply when layers are merged together.
typedef enum
{
NORMAL_MODE,
DISSOLVE_MODE,
BEHIND_MODE,
MULTIPLY_MODE,
SCREEN_MODE,
OVERLAY_MODE,
DIFFERENCE_MODE,
ADDITION_MODE,
SUBTRACT_MODE,
DARKEN_ONLY_MODE,
LIGHTEN_ONLY_MODE,
HUE_MODE,
SATURATION_MODE,
COLOR_MODE,
VALUE_MODE,
DIVIDE_MODE,
ERASE_MODE,
REPLACE_MODE,
ANTI_ERASE_MODE
} LayerModeEffects;
// From GIMP "xcf.c" v1.2
//! Properties which can be stored in an XCF file.
typedef enum
{
PROP_END = 0,
PROP_COLORMAP = 1,
PROP_ACTIVE_LAYER = 2,
PROP_ACTIVE_CHANNEL = 3,
PROP_SELECTION = 4,
PROP_FLOATING_SELECTION = 5,
PROP_OPACITY = 6,
PROP_MODE = 7,
PROP_VISIBLE = 8,
PROP_LINKED = 9,
PROP_PRESERVE_TRANSPARENCY = 10,
PROP_APPLY_MASK = 11,
PROP_EDIT_MASK = 12,
PROP_SHOW_MASK = 13,
PROP_SHOW_MASKED = 14,
PROP_OFFSETS = 15,
PROP_COLOR = 16,
PROP_COMPRESSION = 17,
PROP_GUIDES = 18,
PROP_RESOLUTION = 19,
PROP_TATTOO = 20,
PROP_PARASITES = 21,
PROP_UNIT = 22,
PROP_PATHS = 23,
PROP_USER_UNIT = 24
} PropType;
// From GIMP "xcf.c" v1.2
//! Compression type used in layer tiles.
typedef enum
{
COMPRESS_NONE = 0,
COMPRESS_RLE = 1,
COMPRESS_ZLIB = 2,
COMPRESS_FRACTAL = 3 /* Unused. */
} CompressionType;
|
