commit
e3c19cd7d1
487
bin/picom-trans
487
bin/picom-trans
|
@ -1,9 +1,15 @@
|
||||||
#!/bin/sh
|
#!/bin/sh
|
||||||
|
# SPDX-License-Identifier: MIT
|
||||||
|
|
||||||
#
|
#
|
||||||
# picom-trans
|
# picom-trans
|
||||||
# transset in a bash script
|
# Copyright (c) 2021, Subhaditya Nath
|
||||||
# Copyright (c) 2011-2012, Christopher Jeffrey
|
# Based on previous works of Christopher Jeffrey
|
||||||
|
#
|
||||||
|
|
||||||
|
#
|
||||||
|
# Conforming to POSIX-1.2007
|
||||||
|
# https://pubs.opengroup.org/onlinepubs/9699919799
|
||||||
#
|
#
|
||||||
|
|
||||||
# Usage:
|
# Usage:
|
||||||
|
@ -21,192 +27,381 @@
|
||||||
# $ picom-trans -c +5
|
# $ picom-trans -c +5
|
||||||
# Delete current window's opacity
|
# Delete current window's opacity
|
||||||
# $ picom-trans -c --delete
|
# $ picom-trans -c --delete
|
||||||
|
# Toggle current window's opacity between 90 and unset
|
||||||
|
# $ picom-trans -c --toggle 90
|
||||||
# Reset all windows
|
# Reset all windows
|
||||||
# $ picom-trans --reset
|
# $ picom-trans --reset
|
||||||
|
|
||||||
case "$0" in
|
|
||||||
*compton-trans*) echo "Warning: compton has been renamed, please use picom-trans instead" >& 2;;
|
# Save $0 now to print correct value while printing from functions.
|
||||||
|
# Printing errormsgs from functions using "$0" prints the function name
|
||||||
|
# instead of the executable name.
|
||||||
|
EXE_NAME="$0"
|
||||||
|
|
||||||
|
|
||||||
|
# Instead of printing the full path to this file (e.g. /usr/bin/picom-trans)
|
||||||
|
# only print the base name (i.e. picom-trans)
|
||||||
|
EXE_NAME="$(basename "$EXE_NAME")"
|
||||||
|
|
||||||
|
|
||||||
|
print_usage()
|
||||||
|
{ #{{
|
||||||
|
echo "Usage: $EXE_NAME [options] [+|-]opacity"
|
||||||
|
echo ""
|
||||||
|
echo "Options:"
|
||||||
|
echo " -h, --help Print this help message."
|
||||||
|
echo " -o, --opacity OPACITY Specify the new opacity value in range 0-100 for the window. If"
|
||||||
|
echo " prefixed with + or -, increment or decrement from the current"
|
||||||
|
echo " opacity of the target window."
|
||||||
|
echo ""
|
||||||
|
echo "Actions:"
|
||||||
|
echo " -g, --get Print current opacity of the target window."
|
||||||
|
echo " -d, --delete Delete opacity of the target window."
|
||||||
|
echo " -t, --toggle Toggle the target window's opacity, i.e. set if not already set"
|
||||||
|
echo " and delete else."
|
||||||
|
echo " -r, --reset Reset opacity for all windows."
|
||||||
|
echo ""
|
||||||
|
echo "Window Selection:"
|
||||||
|
echo " -s, --select Select target window with mouse cursor. (DEFAULT)"
|
||||||
|
echo " -c, --current Select the currently active window as target."
|
||||||
|
echo " -n, --name WINDOW_NAME Specify and try to match a window name."
|
||||||
|
echo " -w, --window WINDOW_ID Specify the window id of the target window."
|
||||||
|
} #}}
|
||||||
|
|
||||||
|
|
||||||
|
parse_args()
|
||||||
|
{ #{{
|
||||||
|
i=1 # because we start from "$1", not from "$0"
|
||||||
|
while [ $i -le $# ]
|
||||||
|
do
|
||||||
|
#### [START] Convert GNU longopts to POSIX equivalents ####
|
||||||
|
if [ "$1" = "--${1##--}" ] # check if $1 is a longopt
|
||||||
|
then
|
||||||
|
# Catch invalid options
|
||||||
|
case "$1" in
|
||||||
|
(--opacity=|--name=|--window=)
|
||||||
|
echo "$EXE_NAME: option ${1%=} needs a value" >&2
|
||||||
|
exit 1;;
|
||||||
|
(--opacity|--name|--window)
|
||||||
|
test $i -eq $# \
|
||||||
|
&& echo "$EXE_NAME: option $1 needs a value" >&2 \
|
||||||
|
&& exit 1;;
|
||||||
esac
|
esac
|
||||||
|
|
||||||
# "command" is a shell built-in, faster than "which"
|
# Separate "--ARG=VAL" into "--ARG" "VAL"
|
||||||
if test -z "$(command -v xprop)" -o -z "$(command -v xwininfo)"; then
|
case "$1" in
|
||||||
echo 'The command xwininfo or xprop is not available. They might reside in a package named xwininfo, xprop, x11-utils, xorg-xprop, or xorg-xwininfo.' >& 2
|
(--opacity=*|--name=*|--window=*)
|
||||||
|
ARG="$(echo "$1" | sed -E 's/(--[^=]+)=.*$/\1/')"
|
||||||
|
VAL="${1##${ARG}=}"
|
||||||
|
shift && set -- "$ARG" "$VAL" "$@"
|
||||||
|
esac
|
||||||
|
|
||||||
|
# Turn into short form
|
||||||
|
case "$1" in
|
||||||
|
(--help|--opacity|--get|--delete|--toggle|--reset|--select|--current|--name|--window)
|
||||||
|
ARG=${1#-} # remove one '-' from prefix
|
||||||
|
ARG="$(echo "$ARG" | cut -c -2)" # get first two characters
|
||||||
|
shift && set -- "$ARG" "$@"
|
||||||
|
esac
|
||||||
|
|
||||||
|
# If the argument still starts with --, it is an invalid argument
|
||||||
|
case "$1" in
|
||||||
|
(--*)
|
||||||
|
echo "$EXE_NAME: illegal option $1" >&2
|
||||||
exit 1
|
exit 1
|
||||||
|
esac
|
||||||
fi
|
fi
|
||||||
|
#### [END] Convert GNU longopts to POSIX equivalents ####
|
||||||
|
|
||||||
# Variables
|
|
||||||
active=
|
|
||||||
wprefix=
|
|
||||||
window=
|
|
||||||
opacity=
|
|
||||||
cur=
|
|
||||||
action=
|
|
||||||
treeout=
|
|
||||||
wid=
|
|
||||||
topmost=
|
|
||||||
lineno=
|
|
||||||
option=
|
|
||||||
v=
|
|
||||||
|
|
||||||
# Workaround: replace '-5' with '~5' so as not to confuse getopts.
|
#### [START] Prepend '-o' to standalone opacity values ####
|
||||||
for v in "$@"; do
|
# Iterate over every argument and check if it is an opacity without the -o
|
||||||
shift && set -- "$@" "$(echo "$v" | sed 's/^-\([0-9]\+%\?\)$/~\1/')"
|
# option in the previous argument. If so, then prepend the -o option.
|
||||||
|
# e.g. Turn this -
|
||||||
|
# picom-trans -c +10 -s
|
||||||
|
# into this -
|
||||||
|
# picom-trans -c -o +10 -s
|
||||||
|
#
|
||||||
|
# NOTE: Don't touch arguments that are preceded by -o, -w, or -n (i.e. the
|
||||||
|
# options that take a value.)
|
||||||
|
# e.g. This -
|
||||||
|
# picom-trans -w 75 -o 90
|
||||||
|
# should NOT be turned into this -
|
||||||
|
# picom-trans -w -o 75 -o 90
|
||||||
|
# We ensure this by checking the "$#"th (i.e. the last) argument. If
|
||||||
|
# argument is an option that needs a value, we don't do anything to $1.
|
||||||
|
#
|
||||||
|
# NOTE: we are using printf because most echo implementations aren't
|
||||||
|
# POSIX-compliant. For example, according to POSIX.1-2017, echo doesn't
|
||||||
|
# support any options, so,
|
||||||
|
# $ echo "-n"
|
||||||
|
# should output -
|
||||||
|
# -n
|
||||||
|
# But it doesn't. It instead interprets the "-n" as the option -n, which,
|
||||||
|
# in most implementations, means that the trailing newline should not be
|
||||||
|
# printed.
|
||||||
|
if echo "$1" | grep -qE '^[+-]?[[:digit:]]+%?$' && \
|
||||||
|
! eval "printf '%s' \"\${$#}\"" | grep -q '^-[hdtrgsc]*[own]$'
|
||||||
|
# NOTE: eval "printf '%s' \"\${$#}\"" means 'print the last argument'
|
||||||
|
# NOTE: The letters inside the first square brackets (ie. hdtrgsc) are
|
||||||
|
# the same as those in the getopts argument, minus those that are
|
||||||
|
# followed by a ':'
|
||||||
|
# NOTE: The letters inside the second square brackets (ie. own) are
|
||||||
|
# the same as those in the getopts argument, minus those that are
|
||||||
|
# NOT followed by a ':'
|
||||||
|
then
|
||||||
|
set -- "$@" "-o"
|
||||||
|
i=$(( i + 1 ))
|
||||||
|
fi
|
||||||
|
#### [END] Prepend '-o' to standalone opacity values ####
|
||||||
|
|
||||||
|
|
||||||
|
# Prepare for next iteration
|
||||||
|
ARG="$1"
|
||||||
|
shift && set -- "$@" "$ARG"
|
||||||
|
i=$(( i + 1 ))
|
||||||
done
|
done
|
||||||
|
|
||||||
# This takes into account the fact that getopts stops on
|
|
||||||
# any argument it doesn't recognize or errors on. This
|
# NOTE: DO NOT ATTEMPT TO USE "$OPTIND" INSIDE THE getopts LOOP
|
||||||
# allows for things like `picom-trans -5` as well
|
# - https://github.com/yshui/picom/pull/634#discussion_r654571535
|
||||||
# as `picom-trans -c +5 -s` (contrived example).
|
# - https://www.mail-archive.com/austin-group-l%40opengroup.org/msg04112.html
|
||||||
while test $# -gt 0; do
|
|
||||||
# Reset option index
|
|
||||||
OPTIND=1
|
OPTIND=1
|
||||||
|
while getopts 'ho:dtrgsn:w:c' OPTION
|
||||||
# Read options
|
do
|
||||||
while getopts 'scrdgn:w:o:-:' option "$@"; do
|
case "$OPTION" in
|
||||||
if test "$option" = '-'; then
|
(h) print_usage; exit 0;;
|
||||||
case "$OPTARG" in
|
(o) target_opacity="$OPTARG";;
|
||||||
select | current | reset | delete | get)
|
(d) action=delete;;
|
||||||
v=''
|
(t) action=toggle;;
|
||||||
;;
|
(r) action=reset;;
|
||||||
name | window | opacity)
|
(g) action=get;;
|
||||||
eval v=\$$OPTIND
|
(s) winidtype=; winid=;;
|
||||||
OPTIND=$((OPTIND + 1))
|
(n) winidtype=-name; winid="$OPTARG";;
|
||||||
;;
|
(w) winidtype=-id; winid="$OPTARG";;
|
||||||
name=* | window=* | opacity=*)
|
(c) winidtype=-id; winid="$(get_focused_window_id)";;
|
||||||
v=$(echo "$OPTARG" | sed 's/^[^=]\+=//')
|
(\?) exit 1
|
||||||
;;
|
|
||||||
*)
|
|
||||||
echo "$0: illegal option $OPTARG" >& 2
|
|
||||||
exit 1
|
|
||||||
;;
|
|
||||||
esac
|
|
||||||
option=$(echo "$OPTARG" | cut -c 1)
|
|
||||||
OPTARG=$v
|
|
||||||
fi
|
|
||||||
case "$option" in
|
|
||||||
s) wprefix=''; window='' ;;
|
|
||||||
c)
|
|
||||||
active=$(xprop -root -notype _NET_ACTIVE_WINDOW \
|
|
||||||
| grep -Eo '0x[[:xdigit:]]+' | head -n 1)
|
|
||||||
wprefix='-id'; window=$active
|
|
||||||
;;
|
|
||||||
r) action='reset' ;;
|
|
||||||
d) action='delete' ;;
|
|
||||||
g) action='get' ;;
|
|
||||||
n) wprefix='-name'; window=$OPTARG ;;
|
|
||||||
w) wprefix='-id'; window=$OPTARG ;;
|
|
||||||
o) opacity=$OPTARG ;;
|
|
||||||
\?) exit 1 ;;
|
|
||||||
esac
|
esac
|
||||||
done
|
done
|
||||||
|
} #}}
|
||||||
|
|
||||||
# Read positional arguments
|
|
||||||
shift $((OPTIND - 1))
|
|
||||||
test -n "$1" && opacity=$1 && shift
|
|
||||||
done
|
|
||||||
|
|
||||||
# clean up opacity. xargs == a poor man's trim.
|
get_target_window_id()
|
||||||
opacity=$(echo "$opacity" | xargs | sed 's/%//g' | sed 's/^~\([0-9]\+\)$/-\1/')
|
{ #{{
|
||||||
|
|
||||||
# Validate opacity value
|
# Get the output of xwininfo
|
||||||
if test -z "$action" && ! echo "$opacity" | grep -q '^[+-]\?[0-9]\+$'; then
|
if test -z "$winidtype"
|
||||||
echo "Invalid opacity specified: $opacity."
|
then xwininfo_output="$(xwininfo -children -frame)"
|
||||||
|
elif test "$winidtype" = "-name"
|
||||||
|
then xwininfo_output="$(xwininfo -children -name "$winid")"
|
||||||
|
elif test "$winidtype" = "-id"
|
||||||
|
then
|
||||||
|
# First, check if supplied window id is valid
|
||||||
|
if ! echo "$winid" | grep -Eiq '^[[:space:]]*(0x[[:xdigit:]]+|[[:digit:]]+)[[:space:]]*$'
|
||||||
|
then
|
||||||
|
echo "Bad window ID" >&2
|
||||||
exit 1
|
exit 1
|
||||||
fi
|
fi
|
||||||
|
xwininfo_output="$(xwininfo -children -id "$winid")"
|
||||||
# Reset opacity for all windows
|
|
||||||
if test x"$action" = x'reset'; then
|
|
||||||
xwininfo -root -tree \
|
|
||||||
| sed -n 's/^ \(0x[[:xdigit:]]*\).*/\1/p' \
|
|
||||||
| while IFS=$(printf '\n') read wid; do
|
|
||||||
xprop -id "$wid" -remove _NET_WM_WINDOW_OPACITY
|
|
||||||
done
|
|
||||||
exit 0
|
|
||||||
fi
|
fi
|
||||||
|
|
||||||
# Get ID of the target window
|
# Extract window id from xwininfo output
|
||||||
if test -z "$wprefix"; then
|
winid="$(echo "$xwininfo_output" | sed -n 's/^xwininfo:.*: \(0x[[:xdigit:]]*\).*$/\1/p')"
|
||||||
treeout=$(xwininfo -children -frame)
|
if test -z "$winid"
|
||||||
else
|
then
|
||||||
test "$wprefix" = '-id' \
|
echo "Failed to find window" >&2
|
||||||
&& ! echo "$window" | grep -Eiq '^[[:space:]]*(0x[[:xdigit:]]+|[[:digit:]]+)[[:space:]]*$' \
|
|
||||||
&& echo 'Bad window ID.' && exit 1
|
|
||||||
treeout=$(xwininfo -children $wprefix "$window")
|
|
||||||
fi
|
|
||||||
|
|
||||||
wid=$(echo "$treeout" | sed -n 's/^xwininfo:.*: \(0x[[:xdigit:]]*\).*$/\1/p')
|
|
||||||
|
|
||||||
if test -z "$wid"; then
|
|
||||||
echo 'Failed to find window.'
|
|
||||||
exit 1
|
exit 1
|
||||||
fi
|
fi
|
||||||
|
|
||||||
# Make sure it's not root window
|
# Make sure it's not root window
|
||||||
if echo "$treeout" | fgrep -q 'Parent window id: 0x0'; then
|
if echo "$xwininfo_output" | grep -Fq "Parent window id: 0x0"
|
||||||
echo 'Cannot set opacity on root window.'
|
then
|
||||||
|
echo "Cannot set opacity on root window" >&2
|
||||||
exit 1
|
exit 1
|
||||||
fi
|
fi
|
||||||
|
|
||||||
# If it's already the topmost window
|
# If it's not the topmost window, get the topmost window
|
||||||
if echo "$treeout" | grep -q 'Parent window id: 0x[[:xdigit:]]* (the root window)'; then
|
if ! echo "$xwininfo_output" | grep -q 'Parent window id: 0x[[:xdigit:]]* (the root window)'
|
||||||
topmost=$wid
|
then
|
||||||
else
|
window_tree="$(xwininfo -root -tree)"
|
||||||
# Get the whole window tree
|
if test -z "$window_tree"
|
||||||
treeout=$(xwininfo -root -tree)
|
then
|
||||||
|
echo "Failed to get root window tree" >&2
|
||||||
if test -z "$treeout"; then
|
|
||||||
echo 'Failed to get root window tree.'
|
|
||||||
exit 1
|
exit 1
|
||||||
fi
|
fi
|
||||||
|
|
||||||
# Find the line number of the target window in the window tree
|
# Find the highest ancestor of the target window
|
||||||
lineno=$(echo -n "$treeout" | grep -nw "$wid" | head -n1 | cut -d ':' -f 1)
|
winid="$(echo "$window_tree" \
|
||||||
|
| sed -n "/^\s*$winid/q;s/^ \(0x[[:xdigit:]]*\).*/\1/p" \
|
||||||
if test -z "$lineno"; then
|
| tail -n 1)"
|
||||||
echo 'Failed to find window in window tree.'
|
if test -z "$winid"
|
||||||
|
then
|
||||||
|
echo "Failed to find window in window tree" >&2
|
||||||
|
exit 1
|
||||||
|
fi
|
||||||
|
fi
|
||||||
|
if test -z "$winid"
|
||||||
|
then
|
||||||
|
echo "Failed to find the highest parent window below root of the selected window" >&2
|
||||||
exit 1
|
exit 1
|
||||||
fi
|
fi
|
||||||
|
|
||||||
# Find the highest ancestor of the target window below
|
echo "$winid"
|
||||||
topmost=$(echo -n "$treeout" \
|
} #}}
|
||||||
| head -n $((lineno + 1)) \
|
|
||||||
| sed -n 's/^ \(0x[[:xdigit:]]*\).*/\1/p' \
|
|
||||||
| tail -n 1)
|
|
||||||
fi
|
|
||||||
|
|
||||||
if test -z "$topmost"; then
|
get_focused_window_id()
|
||||||
echo 'Failed to find the highest parent window below root of the' \
|
{ #{{
|
||||||
'selected window.'
|
id="$(xprop -root -notype -f _NET_ACTIVE_WINDOW 32x '$0' _NET_ACTIVE_WINDOW)"
|
||||||
exit 1
|
echo "${id#_NET_ACTIVE_WINDOW}"
|
||||||
fi
|
} #}}
|
||||||
|
|
||||||
# Remove the opacity property.
|
get_current_opacity()
|
||||||
if test x"$action" = x'delete'; then
|
{ #{{
|
||||||
xprop -id "$topmost" -remove _NET_WM_WINDOW_OPACITY
|
# Gets current opacity in the range 0-100
|
||||||
exit 0
|
# Doesn't output anything if opacity isn't set
|
||||||
fi
|
cur="$(xprop -id "$winid" -notype -f _NET_WM_WINDOW_OPACITY 32c '$0' _NET_WM_WINDOW_OPACITY)"
|
||||||
|
cur="${cur#_NET_WM_WINDOW_OPACITY}"
|
||||||
# Get current opacity.
|
cur="${cur%:*}"
|
||||||
cur=$(xprop -id "$topmost" -notype _NET_WM_WINDOW_OPACITY \
|
test -n "$cur" &&
|
||||||
| sed 's/^.*\b\([0-9]\+\).*$\|^.*$/\1/')
|
|
||||||
test -z "$cur" && cur=0xffffffff
|
|
||||||
cur=$(( cur * 100 / 0xffffffff ))
|
cur=$(( cur * 100 / 0xffffffff ))
|
||||||
|
echo "$cur"
|
||||||
|
} #}}
|
||||||
|
|
||||||
# Output current opacity.
|
|
||||||
if test x"$action" = x'get'; then
|
get_opacity()
|
||||||
|
{ #{{
|
||||||
|
cur="$(get_current_opacity)"
|
||||||
|
test -z "$cur" && cur=100 # Unset opacity means fully opaque
|
||||||
echo "$cur"
|
echo "$cur"
|
||||||
exit 0
|
exit 0
|
||||||
|
} #}}
|
||||||
|
|
||||||
|
delete_opacity()
|
||||||
|
{ #{{
|
||||||
|
xprop -id "$winid" -remove _NET_WM_WINDOW_OPACITY
|
||||||
|
exit 0
|
||||||
|
} #}}
|
||||||
|
|
||||||
|
reset_opacity() # Reset opacity of all windows
|
||||||
|
{ #{{
|
||||||
|
for winid in $(xwininfo -root -tree | sed -n 's/^ \(0x[[:xdigit:]]*\).*/\1/p')
|
||||||
|
do xprop -id "$winid" -remove _NET_WM_WINDOW_OPACITY 2>/dev/null
|
||||||
|
done
|
||||||
|
exit 0
|
||||||
|
} #}}
|
||||||
|
|
||||||
|
set_opacity()
|
||||||
|
{ #{{
|
||||||
|
if ! echo "$target_opacity" | grep -qE '^[+-]?[[:digit:]]+%?$'
|
||||||
|
then
|
||||||
|
if test -z "$target_opacity"
|
||||||
|
then echo "No opacity specified" >&2
|
||||||
|
else echo "Invalid opacity specified: $target_opacity" >&2
|
||||||
|
fi
|
||||||
|
exit 1
|
||||||
fi
|
fi
|
||||||
|
|
||||||
# Calculate the desired opacity
|
# strip trailing '%' sign, if any
|
||||||
if echo "$opacity" | grep -q '^[+-]'; then
|
target_opacity="${target_opacity%%%}"
|
||||||
opacity=$((cur + opacity))
|
|
||||||
|
if echo "$target_opacity" | grep -q '^[+-]'
|
||||||
|
then
|
||||||
|
current_opacity="$(get_current_opacity)"
|
||||||
|
test -z "$current_opacity" && current_opacity=100
|
||||||
|
target_opacity=$(( current_opacity + target_opacity ))
|
||||||
fi
|
fi
|
||||||
|
|
||||||
test $opacity -lt 0 && opacity=0
|
test $target_opacity -lt 0 && target_opacity=0
|
||||||
test $opacity -gt 100 && opacity=100
|
test $target_opacity -gt 100 && target_opacity=100
|
||||||
|
|
||||||
# Set opacity
|
target_opacity=$(( target_opacity * 0xffffffff / 100 ))
|
||||||
opacity=$((opacity * 0xffffffff / 100))
|
xprop -id "$winid" -f _NET_WM_WINDOW_OPACITY 32c \
|
||||||
xprop -id "$topmost" -f _NET_WM_WINDOW_OPACITY 32c \
|
-set _NET_WM_WINDOW_OPACITY "$target_opacity"
|
||||||
-set _NET_WM_WINDOW_OPACITY "$opacity"
|
|
||||||
|
exit $?
|
||||||
|
} #}}
|
||||||
|
|
||||||
|
toggle_opacity()
|
||||||
|
{ #{{
|
||||||
|
# If opacity is currently set, unset it.
|
||||||
|
# If opacity is currently unset, set opacity to the supplied value. If no
|
||||||
|
# value is supplied, we default to 100%.
|
||||||
|
if test -z "$(get_current_opacity)"
|
||||||
|
then
|
||||||
|
test -n "$target_opacity" || target_opacity=100
|
||||||
|
set_opacity
|
||||||
|
else
|
||||||
|
delete_opacity
|
||||||
|
fi
|
||||||
|
} #}}
|
||||||
|
|
||||||
|
|
||||||
|
# Warn about rename of compton to picom
|
||||||
|
case "$0" in
|
||||||
|
*compton-trans*) echo "Warning: compton has been renamed, please use picom-trans instead" >&2;;
|
||||||
|
esac
|
||||||
|
|
||||||
|
|
||||||
|
# Check if both xwininfo and xprop are available
|
||||||
|
if ! command -v xprop >/dev/null || ! command -v xwininfo >/dev/null
|
||||||
|
then
|
||||||
|
echo "The command xwininfo or xprop is not available. They might reside in a package named xwininfo, xprop, x11-utils, xorg-xprop, or xorg-xwininfo" >&2
|
||||||
|
exit 1
|
||||||
|
fi
|
||||||
|
|
||||||
|
|
||||||
|
# No arguments given. Show help.
|
||||||
|
if test $# -eq 0
|
||||||
|
then
|
||||||
|
print_usage >&2
|
||||||
|
exit 1
|
||||||
|
fi
|
||||||
|
|
||||||
|
|
||||||
|
# Variables
|
||||||
|
# action is set to 'set' by default
|
||||||
|
action=set
|
||||||
|
winid=
|
||||||
|
winidtype=
|
||||||
|
target_opacity=
|
||||||
|
|
||||||
|
# If there's only one argument, and it's a valid opacity
|
||||||
|
# then take it as target_opacity. Else, parse all arguments.
|
||||||
|
if test $# -eq 1 && echo "$1" | grep -qE '^[+-]?[[:digit:]]+%?$'
|
||||||
|
then
|
||||||
|
target_opacity=$1
|
||||||
|
shift
|
||||||
|
else
|
||||||
|
parse_args "$@"
|
||||||
|
fi
|
||||||
|
|
||||||
|
|
||||||
|
# reset_opacity doesn't need $winid
|
||||||
|
case $action in
|
||||||
|
(reset) reset_opacity;;
|
||||||
|
esac
|
||||||
|
|
||||||
|
# Any other action needs $winid
|
||||||
|
#
|
||||||
|
# NOTE: Do NOT change the order of winid= and winidtype= below
|
||||||
|
# the output of get_target_window_id depends on $winidtype
|
||||||
|
#
|
||||||
|
# NOTE: If get_target_window_id returns with a non-zero $?
|
||||||
|
# that must mean that some error occured. So, exit with that same $?
|
||||||
|
#
|
||||||
|
winid=$(get_target_window_id) || exit $?
|
||||||
|
winidtype=-id
|
||||||
|
case $action in
|
||||||
|
(set) set_opacity;;
|
||||||
|
(get) get_opacity;;
|
||||||
|
(delete) delete_opacity;;
|
||||||
|
(toggle) toggle_opacity;;
|
||||||
|
esac
|
||||||
|
|
||||||
|
|
||||||
|
# We should never reach this part of the file
|
||||||
|
echo "This sentence shouldn't have been printed. Please file a bug report." >&2
|
||||||
|
exit 128
|
||||||
|
|
||||||
|
|
||||||
|
# vim:ft=sh:ts=4:sts=4:sw=2:et:fdm=marker:fmr=#{{,#}}:nowrap
|
||||||
|
|
Loading…
Reference in New Issue