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
139
140
141
142
143
144
145
146
147
148
149
|
#ifndef __GDK_CC_H__
#define __GDK_CC_H__
#include <gdk/gdktypes.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
typedef struct _GdkColorContextDither GdkColorContextDither;
typedef struct _GdkColorContext GdkColorContext;
/* Color Context modes.
*
* GDK_CC_MODE_UNDEFINED - unknown
* GDK_CC_MODE_BW - default B/W
* GDK_CC_MODE_STD_CMAP - has a standard colormap
* GDK_CC_MODE_TRUE - is a TrueColor/DirectColor visual
* GDK_CC_MODE_MY_GRAY - my grayramp
* GDK_CC_MODE_PALETTE - has a pre-allocated palette
*/
typedef enum
{
GDK_CC_MODE_UNDEFINED,
GDK_CC_MODE_BW,
GDK_CC_MODE_STD_CMAP,
GDK_CC_MODE_TRUE,
GDK_CC_MODE_MY_GRAY,
GDK_CC_MODE_PALETTE
} GdkColorContextMode;
struct _GdkColorContextDither
{
gint fast_rgb[32][32][32]; /* quick look-up table for faster rendering */
gint fast_err[32][32][32]; /* internal RGB error information */
gint fast_erg[32][32][32];
gint fast_erb[32][32][32];
};
struct _GdkColorContext
{
GdkVisual *visual;
GdkColormap *colormap;
gint num_colors; /* available no. of colors in colormap */
gint max_colors; /* maximum no. of colors */
gint num_allocated; /* no. of allocated colors */
GdkColorContextMode mode;
gint need_to_free_colormap;
GdkAtom std_cmap_atom;
gulong *clut; /* color look-up table */
GdkColor *cmap; /* colormap */
GHashTable *color_hash; /* hash table of allocated colors */
GdkColor *palette; /* preallocated palette */
gint num_palette; /* size of palette */
GdkColorContextDither *fast_dither; /* fast dither matrix */
struct
{
gint red;
gint green;
gint blue;
} shifts;
struct
{
gulong red;
gulong green;
gulong blue;
} masks;
struct
{
gint red;
gint green;
gint blue;
} bits;
gulong max_entry;
gulong black_pixel;
gulong white_pixel;
};
GdkColorContext *gdk_color_context_new (GdkVisual *visual,
GdkColormap *colormap);
GdkColorContext *gdk_color_context_new_mono (GdkVisual *visual,
GdkColormap *colormap);
void gdk_color_context_free (GdkColorContext *cc);
gulong gdk_color_context_get_pixel (GdkColorContext *cc,
gushort red,
gushort green,
gushort blue,
gint *failed);
void gdk_color_context_get_pixels (GdkColorContext *cc,
gushort *reds,
gushort *greens,
gushort *blues,
gint ncolors,
gulong *colors,
gint *nallocated);
void gdk_color_context_get_pixels_incremental (GdkColorContext *cc,
gushort *reds,
gushort *greens,
gushort *blues,
gint ncolors,
gint *used,
gulong *colors,
gint *nallocated);
gint gdk_color_context_query_color (GdkColorContext *cc,
GdkColor *color);
gint gdk_color_context_query_colors (GdkColorContext *cc,
GdkColor *colors,
gint num_colors);
gint gdk_color_context_add_palette (GdkColorContext *cc,
GdkColor *palette,
gint num_palette);
void gdk_color_context_init_dither (GdkColorContext *cc);
void gdk_color_context_free_dither (GdkColorContext *cc);
gulong gdk_color_context_get_pixel_from_palette (GdkColorContext *cc,
gushort *red,
gushort *green,
gushort *blue,
gint *failed);
guchar gdk_color_context_get_index_from_palette (GdkColorContext *cc,
gint *red,
gint *green,
gint *blue,
gint *failed);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GDK_CC_H__ */
|
