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
|
#if HAVE_CONFIG_H
#include "config.h"
#endif /* HAVE_CONFIG_H */
#if HAVE_STDIO_H
#include <stdio.h>
#endif /* HAVE_STDIO_H */
/*
http://stackoverflow.com/questions/27159322/rgb-values-of-the-colors-in-the-ansi-extended-colors-index-17-255
The color range of a 256 color terminal consists of 4 parts, often 5,
in which case you actually get 258 colors:
- Color numbers 0 to 7 are the default terminal colors, the actual RGB
value of which is not standardized and can often be configured.
- Color numbers 8 to 15 are the "bright" colors. Most of the time these
are a lighter shade of the the color with index - 8. They are also not
standardized and can often be configured. Depending on terminal and
shell, they are often used instead of or in conjunction with bold font
faces.
- Color numbers 16 to 231 are RGB colors. These 216 colors are defined by
6 values on each of the three RGB axes. That is instead of values 0 -
255, each color only ranges from 0 - 5.
The color number is then calculated like this:
number = 16 + 36 * r + 6 * g + b
with r, g and b in the range 0 - 5.
- The color numbers 232 to 255 are grayscale with 24 shades of gray from dark to light.
- The default colors for foreground and background. In many terminals they
can be configured independently from the 256 indexed colors, giving an
additional two configurable colors . You get them when not setting any
other color or disabling other colors (i.e. print '\e[m').
*/
/*
In 256-color mode, the color-codes are the following:
0x00-0x07: standard colors (as in ESC [ 3037 m)
0x08-0x0F: high intensity colors (as in ESC [ 9097 m)
0x10-0xE7: 6 6 6 = 216 colors: 16 + 36 r + 6 g + b (0 ? r, g, b ? 5)
0xE8-0xFF: grayscale from black to white in 24 steps
Set the foreground color to index N: \033[38;5;${N}m
Set the background color to index M: \033[48;5;${M}m
*/
int main( int argc, char **argv )
{
int fg, bg, bold;
// This line has a tab
// Two tabs here
printf( "\n\033[1;33m --- Terminal Color Chart ---\033[0m\n\n" );
printf( " 40m 41m 42m 43m 44m 45m 46m 47m\n" );
for ( fg = 29; fg <= 37; fg++ )
{
for ( bold = 0; bold <= 1; bold++ )
{
if ( fg == 29 )
printf( " %sm ", bold ? "1" : " " );
else
printf( " %s%2dm ", bold ? "1;" : " ", fg );
printf( "\033[%d;%dm mLs \033[0m ", bold, fg );
for ( bg = 40; bg <= 47; bg++ )
{
printf( "\033[%d;%d;%dm mLs \033[0m ", bold, bg, fg );
}
printf( "\n" );
}
}
printf( "\n" );
int index, red, green, blue;
printf( "Standard colors:\n" );
for ( index = 0; index < 16; index++ )
{
printf( "\033[48;5;%dm %2d ", index, index );
if ( index == 7 )
printf( "\033[0m\n" );
}
printf( "\033[0m\n" );
printf( "\n6x6x6 Color cube:\n" );
for ( int pass = 0; pass < 2; pass++ )
{
for ( green = 0; green < 6; green++ )
{
for ( red = pass * 3; red < pass * 3 + 3; red++ )
{
for ( blue = 0; blue < 6; blue++ )
{
index = 16 + ( red * 36 ) + ( green * 6 ) + blue;
printf( "\033[48;5;%dm %2x ", index, index );
}
printf( "\033[0m " );
}
printf( "\n" );
}
printf( "\n" );
}
printf( "\nGrayscale:\n" );
for ( index = 232; index < 256; index++ )
{
printf( "\033[48;5;%dm %2x ", index, index );
if ( index == 243 )
printf( "\033[0m\n" );
}
printf( "\033[0m\n\n" );
return 0;
}
|
