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refactor settrans

This commit is contained in:
Christopher Jeffrey 2012-03-31 23:54:42 -05:00
parent 24bf591bd7
commit d52f7a06db
1 changed files with 26 additions and 15 deletions
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41
bin/settrans
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@ -1,21 +1,21 @@
#!/bin/bash
# transset in a bash script
# copyright (c) 2011-2012, christopher jeffrey
# Copyright (c) 2011-2012, Christopher Jeffrey
# usage:
# Usage:
# by window id
#trans -w "$WINDOWID" -o 75
# settrans -w "$WINDOWID" -o 75
# by name
#trans -n "urxvt" -o 75
# settrans -n "urxvt" -o 75
# by current window
#trans -c -o 75
# settrans -c -o 75
# by selection
#trans -s -o 75
# settrans -s -o 75
# increment current window 5%
#trans -c -o +5
# settrans -c -o +5
if [ -z "$(which xprop)" -o -z "$(which xwininfo)" ]; then
if test -z "$(which xprop)" -o -z "$(which xwininfo)"; then
echo "Please install x11-utils/xorg-xprop/xorg-xwininfo." >&2
exit 1
fi
@ -46,34 +46,45 @@ root=$(xwininfo -all -root \
| sed 's/^.*\(0x\S*\).*$/\1/')
parent=$window
while [ true ]; do
i=0
while true; do
parent=$(xwininfo -all $parent \
| grep Parent \
| sed 's/^.*\(0x\S*\).*$/\1/')
if [ "$parent" = "$root" ]; then
break
fi
parent="-id $parent"
window=$parent
i=$((i+1))
if test $i -ge 1000; then
echo "An error occurred while traversing up the window tree." >&2
echo "Please report this to https://github.com/chjj/compton/issues." >&2
echo "Please mention your WM and versions of xwininfo/xprop." >&2
exit 1
fi
done
inc=$(echo "$opacity" | sed 's/^\(+\|-\).*$\|^.*$/\1/')
if [ -n "$inc" ]; then
if test -n "$inc"; then
cur=$(xprop $window -notype "_NET_WM_WINDOW_OPACITY" \
| sed 's/^.*\b\([0-9]\+\).*$\|^.*$/\1/')
[ -z "$cur" ] && cur=$((0xffffffff))
test -z "$cur" && cur=$((0xffffffff))
cur=$((cur*100/0xffffffff))
opacity=$(echo "$opacity" | sed 's/\(\+\|\-\)//')
if [ "$inc" = "+" ]; then
if test "$inc" = "+"; then
opacity=$((cur+opacity))
else
opacity=$((cur-opacity))
fi
fi
if [ -n "$opacity" ] && [ -n "$window" ]; then
[ $opacity -le 0 ] && opacity=0
[ $opacity -ge 100 ] && opacity=100
if test -n "$opacity" -a -n "$window"; then
test $opacity -lt 0 && opacity=0
test $opacity -gt 100 && opacity=100
opacity=$((opacity*0xffffffff/100))
xprop $window -f _NET_WM_WINDOW_OPACITY 32c \
-set _NET_WM_WINDOW_OPACITY "$opacity"