83 lines
1.6 KiB
Bash
83 lines
1.6 KiB
Bash
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#!/bin/sh
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# $XFree86: xc/programs/xterm/vttests/resize.sh,v 1.5 2003/05/19 00:52:30 dickey Exp $
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#
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# -- Thomas Dickey (1999/3/27)
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# Obtain the current screen size, then resize the terminal to the nominal
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# screen width/height, and restore the size.
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ESC=""
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CMD='echo'
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OPT='-n'
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SUF=''
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TMP=/tmp/xterm$$
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eval '$CMD $OPT >$TMP || echo fail >$TMP' 2>/dev/null
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( test ! -f $TMP || test -s $TMP ) &&
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for verb in printf print ; do
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rm -f $TMP
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eval '$verb "\c" >$TMP || echo fail >$TMP' 2>/dev/null
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if test -f $TMP ; then
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if test ! -s $TMP ; then
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CMD="$verb"
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OPT=
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SUF='\c'
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break
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fi
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fi
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done
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rm -f $TMP
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exec </dev/tty
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old=`stty -g`
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stty raw -echo min 0 time 5
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$CMD $OPT "${ESC}[18t${SUF}" > /dev/tty
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IFS=';' read junk high wide
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$CMD $OPT "${ESC}[19t${SUF}" > /dev/tty
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IFS=';' read junk maxhigh maxwide
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stty $old
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wide=`echo $wide|sed -e 's/t.*//'`
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maxwide=`echo $maxwide|sed -e 's/t.*//'`
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original=${ESC}[8\;${high}\;${wide}t${SUF}
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test $maxwide = 0 && maxwide=`expr $wide \* 2`
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test $maxhigh = 0 && maxhigh=`expr $high \* 2`
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if ( trap "echo exit" EXIT 2>/dev/null ) >/dev/null
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then
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trap '$CMD $OPT "$original" >/dev/tty; exit' EXIT HUP INT TRAP TERM
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else
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trap '$CMD $OPT "$original" >/dev/tty; exit' 0 1 2 5 15
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fi
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w=$wide
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h=$high
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a=1
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while true
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do
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# sleep 1
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echo resizing to $h by $w
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$CMD $OPT "${ESC}[8;${h};${w}t" >/dev/tty
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if test $a = 1 ; then
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if test $w = $maxwide ; then
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h=`expr $h + $a`
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if test $h = $maxhigh ; then
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a=-1
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fi
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else
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w=`expr $w + $a`
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fi
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else
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if test $w = $wide ; then
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h=`expr $h + $a`
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if test $h = $high ; then
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a=1
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fi
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else
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w=`expr $w + $a`
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fi
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fi
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done
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