1 /* $NetBSD: colorbars.c,v 1.1 2012/06/06 00:13:36 christos Exp $ */
4 * Copyright (c) 2012 Nathanial Sloss <nathanialsloss@yahoo.com.au>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
34 #include <sys/param.h>
39 static struct colorInfo
{
43 { "Black", COLOR_BLACK
},
45 { "Green", COLOR_GREEN
},
46 { "Yellow", COLOR_YELLOW
},
47 { "Blue", COLOR_BLUE
},
48 { "Magenta", COLOR_MAGENTA
},
49 { "Cyan", COLOR_CYAN
},
50 { "White", COLOR_WHITE
},
52 size_t lengths
[NELEM(colorInfo
)];
54 static const size_t numcolors
= NELEM(colorInfo
);
58 int spacing
, offsetx
, labeloffsety
, labeloffsetx
;
61 errx(EXIT_FAILURE
, "Cannot initialize curses");
63 colorOK
= has_colors();
66 errx(EXIT_FAILURE
, "Terminal cannot display color");
69 if (COLS
< 45 || LINES
< 10) {
71 errx(EXIT_FAILURE
, "Terminal size must be at least 45x10.");
74 spacing
= COLS
/ numcolors
;
75 offsetx
= (COLS
- (spacing
* numcolors
)) / 2;
81 for (size_t i
= 0; i
< numcolors
; i
++) {
82 lengths
[i
] = strlen(colorInfo
[i
].name
);
83 if (lengths
[i
] > labelwidth
)
84 labelwidth
= lengths
[i
];
85 init_pair(i
, COLOR_WHITE
, colorInfo
[i
].color
);
88 labeloffsetx
= spacing
/ 2;
89 labeloffsety
= (LINES
- 1 - labelwidth
) / 2;
94 for (size_t i
= 0; i
< numcolors
; i
++) {
95 int xoffs
= offsetx
+ spacing
* i
;
97 attrset(COLOR_PAIR(i
));
99 for (int line
= 0; line
< LINES
- 1; line
++)
100 for (int xpos
= 0; xpos
< spacing
; xpos
++)
101 mvprintw(line
, xoffs
+ xpos
, " ");
103 attrset(COLOR_PAIR(0));
105 xoffs
+= labeloffsetx
;
106 for (size_t line
= 0; line
< lengths
[i
]; line
++)
107 mvprintw(line
+ labeloffsety
, xoffs
, "%c",
108 colorInfo
[i
].name
[line
]);
111 attrset(COLOR_PAIR(0));
113 mvprintw(LINES
- 1, 0, "ANSI Color chart - Press any key to exit: ");