1#!/bin/sh
2# $XTermId: dynamic.sh,v 1.25 2022/04/25 08:19:38 tom Exp $
3# -----------------------------------------------------------------------------
4# this file is part of xterm
5#
6# Copyright 1999-2021,2022 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# Demonstrate the use of dynamic colors by setting the background successively
35# to different values.
36
37ESC=""
38OSC="${ESC}]"
39CMD='/bin/echo'
40OPT='-n'
41SUF=''
42: "${TMPDIR=/tmp}"
43TMP=`(mktemp "$TMPDIR/xterm.XXXXXXXX") 2>/dev/null` || TMP="$TMPDIR/xterm$$"
44eval '$CMD $OPT >$TMP || echo fail >$TMP' 2>/dev/null
45{ test ! -f "$TMP" || test -s "$TMP"; } &&
46for verb in "printf" "print" ; do
47    rm -f "$TMP"
48    eval '$verb "\c" >$TMP || echo fail >$TMP' 2>/dev/null
49    if test -f "$TMP" ; then
50	if test ! -s "$TMP" ; then
51	    CMD="$verb"
52	    OPT=
53	    SUF='\c'
54	    break
55	fi
56    fi
57done
58rm -f "$TMP"
59
60LIST="00 30 80 d0 ff"
61
62exec </dev/tty
63old=`stty -g`
64stty raw -echo min 0  time 5
65
66$CMD $OPT "${OSC}11;?${SUF}" > /dev/tty
67read -r original
68stty $old
69original=${original}${SUF}
70
71trap '$CMD $OPT "$original" >/dev/tty; exit 1' 1 2 3 15
72trap '$CMD $OPT "$original" >/dev/tty' 0
73
74while true
75do
76    for R in $LIST
77    do
78	for G in $LIST
79	do
80	    for B in $LIST
81	    do
82		$CMD $OPT "${OSC}11;rgb:$R/$G/$B${SUF}" >/dev/tty
83		sleep 1
84	    done
85	done
86    done
87done
88