git.iko.soy/vty
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add script used to generate the Color240 module
2a782c1Corey O'Connor
scripts/256colres.plnew file+98
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1+#! /usr/bin/perl
2+# $XTermId: 256colres.pl,v 1.16 2007/06/08 23:58:37 tom Exp $
3+# -----------------------------------------------------------------------------
4+# this file is part of xterm
5+#
6+# Copyright 1999-2002,2007 by Thomas E. Dickey
7+#
8+# All Rights Reserved
9+#
10+# Permission is hereby granted, free of charge, to any person obtaining a
11+# copy of this software and associated documentation files (the
12+# "Software"), to deal in the Software without restriction, including
13+# without limitation the rights to use, copy, modify, merge, publish,
14+# distribute, sublicense, and/or sell copies of the Software, and to
15+# permit persons to whom the Software is furnished to do so, subject to
16+# the following conditions:
17+#
18+# The above copyright notice and this permission notice shall be included
19+# in all copies or substantial portions of the Software.
20+#
21+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
22+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
24+# IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
25+# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
26+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
27+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28+#
29+# Except as contained in this notice, the name(s) of the above copyright
30+# holders shall not be used in advertising or otherwise to promote the
31+# sale, use or other dealings in this Software without prior written
32+# authorization.
33+# -----------------------------------------------------------------------------
34+
35+# Construct a header file defining default resources for the 256-color model
36+# of xterm. This is modeled after the 256colors2.pl script.
37+
38+# use the resources for colors 0-15 - usually more-or-less a
39+# reproduction of the standard ANSI colors, but possibly more
40+# pleasing shades
41+
42+use strict;
43+
44+our ( $line1, $line2, $line3 );
45+our ( $red, $green, $blue, $gray );
46+our ( $level, $code, @steps );
47+
48+print <<EOF;
49+{-
50+ - This header file was generated by $0
51+ -}
52+module Graphics.Vty.Attributes.Color240 where
53+
54+import Graphics.Vty.Attributes.Color
55+
56+import Text.Printf
57+
58+-- | RGB color to 240 color palette.
59+--
60+-- generated from 256colres.pl which is forked from xterm 256colres.pl
61+-- todo: all values get clamped high.
62+rgb_color :: Integral i => i -> i -> i -> Color
63+rgb_color r g b
64+ | r < 0 && g < 0 && b < 0 = error "rgb_color with negative color component intensity"
65+EOF
66+
67+my $grey_line=" | r == %d && g == %d && b == %d = Color240 %d\n";
68+my $rgb_line=" | r <= %d && g <= %d && b <= %d = Color240 %d\n";
69+
70+# colors 216-239 are a grayscale ramp, intentionally leaving out
71+# black and white
72+for ($gray = 0; $gray < 24; $gray++) {
73+ $level = ($gray * 10) + 8;
74+ $code = 216 + $gray;
75+ printf($grey_line, $level, $level, $level, $code);
76+}
77+
78+# colors 16-231 are a 6x6x6 color cube
79+for ($red = 0; $red < 6; $red++) {
80+ for ($green = 0; $green < 6; $green++) {
81+ for ($blue = 0; $blue < 6; $blue++) {
82+ $code = ($red * 36) + ($green * 6) + $blue;
83+ printf($rgb_line,
84+ ($red ? ($red * 40 + 55) : 0),
85+ ($green ? ($green * 40 + 55) : 0),
86+ ($blue ? ($blue * 40 + 55) : 0),
87+ $code);
88+ }
89+ }
90+}
91+
92+print <<EOF;
93+ | otherwise = error (printf "RGB color %d %d %d does not map to 240 palette."
94+ (fromIntegral r :: Int)
95+ (fromIntegral g :: Int)
96+ (fromIntegral b :: Int))
97+
98+EOF