mirror of
https://github.com/yshui/picom.git
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245 lines
6.7 KiB
Bash
Executable file
245 lines
6.7 KiB
Bash
Executable file
#!/bin/sh
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#
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# picom-trans
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# transset in a bash script
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# Copyright (c) 2011-2012, Christopher Jeffrey
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#
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# Usage:
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# $ picom-trans [options] [+|-]opacity
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# By window id
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# $ picom-trans -w "$WINDOWID" 75
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# By name
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# $ picom-trans -n "urxvt" 75
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# By current window
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# $ picom-trans -c 75
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# By selection
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# $ picom-trans 75
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# $ picom-trans -s 75
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# Increment current window 5%
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# $ picom-trans -c +5
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# Delete current window's opacity
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# $ picom-trans -c --delete
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# Toggle current window's opacity between 90 and unset
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# $ picom-trans -c --toggle 90
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# Reset all windows
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# $ picom-trans --reset
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print_usage() {
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echo "Usage: $0 [options] [+|-]opacity"
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echo ""
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echo "Options:"
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echo " -h, --help Print this help message."
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echo " -o, --opacity OPACITY Specify the new opacity value in range 1-100 for the window. If"
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echo " prefixed with + or -, increment or decrement from the target"
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echo " window’s current opacity."
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echo ""
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echo "Actions:"
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echo " -g, --get Print the target window's opacity."
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echo " -d, --delete Delete opacity of the target window."
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echo " -t, --toggle Toggle the target window's opacity, i.e. set if not already set"
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echo " and delete else."
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echo " -r, --reset Reset opacity for all windows."
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echo ""
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echo "Window Selection:"
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echo " -s, --select Select target window with mouse cursor. (DEFAULT)"
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echo " -c, --current Select the currently active window as target."
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echo " -n, --name WINDOW_NAME Specify and try to match a window name."
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echo " -w, --window WINDOW_ID Specify the window id of the target window."
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}
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case "$0" in
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*compton-trans*) echo "Warning: compton has been renamed, please use picom-trans instead" >& 2;;
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esac
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# "command" is a shell built-in, faster than "which"
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if test -z "$(command -v xprop)" -o -z "$(command -v xwininfo)"; then
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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
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exit 1
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fi
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if test $# -eq 0; then
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print_usage >& 2
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exit 1
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fi
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# Variables
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active=
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wprefix=
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window=
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opacity=
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cur=
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action=
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treeout=
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wid=
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topmost=
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lineno=
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option=
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v=
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# Workaround: replace '-5' with '~5' so as not to confuse getopts.
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for v in "$@"; do
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shift && set -- "$@" "$(echo "$v" | sed 's/^-\([0-9]\+%\?\)$/~\1/')"
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done
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# This takes into account the fact that getopts stops on
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# any argument it doesn't recognize or errors on. This
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# allows for things like `picom-trans -5` as well
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# as `picom-trans -c +5 -s` (contrived example).
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while test $# -gt 0; do
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# Reset option index
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OPTIND=1
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# Read options
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while getopts 'hscrtdgn:w:o:-:' option "$@"; do
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if test "$option" = '-'; then
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case "$OPTARG" in
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help | select | current | reset | toggle | delete | get)
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v=''
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;;
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name | window | opacity)
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eval v=\$$OPTIND
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OPTIND=$((OPTIND + 1))
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;;
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name=* | window=* | opacity=*)
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v=$(echo "$OPTARG" | sed 's/^[^=]\+=//')
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;;
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*)
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echo "$0: illegal option $OPTARG" >& 2
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exit 1
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;;
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esac
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option=$(echo "$OPTARG" | cut -c 1)
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OPTARG=$v
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fi
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case "$option" in
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h) print_usage; exit 0 ;;
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s) wprefix=''; window='' ;;
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c)
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active=$(xprop -root -notype _NET_ACTIVE_WINDOW \
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| grep -Eo '0x[[:xdigit:]]+' | head -n 1)
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wprefix='-id'; window=$active
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;;
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r) action='reset' ;;
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t) action='toggle' ;;
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d) action='delete' ;;
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g) action='get' ;;
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n) wprefix='-name'; window=$OPTARG ;;
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w) wprefix='-id'; window=$OPTARG ;;
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o) opacity=$OPTARG ;;
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\?) exit 1 ;;
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esac
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done
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# Read positional arguments
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shift $((OPTIND - 1))
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test -n "$1" && opacity=$1 && shift
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done
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# clean up opacity. xargs == a poor man's trim.
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opacity=$(echo "$opacity" | xargs | sed 's/%//g' | sed 's/^~\([0-9]\+\)$/-\1/')
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# Validate opacity value
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if test -z "$action" && ! echo "$opacity" | grep -q '^[+-]\?[0-9]\+$'; then
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echo "Invalid opacity specified: $opacity."
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exit 1
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fi
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# Reset opacity for all windows
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if test x"$action" = x'reset'; then
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xwininfo -root -tree \
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| sed -n 's/^ \(0x[[:xdigit:]]*\).*/\1/p' \
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| while IFS=$(printf '\n') read wid; do
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xprop -id "$wid" -remove _NET_WM_WINDOW_OPACITY
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done
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exit 0
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fi
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# Get ID of the target window
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if test -z "$wprefix"; then
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treeout=$(xwininfo -children -frame)
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else
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test "$wprefix" = '-id' \
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&& ! echo "$window" | grep -Eiq '^[[:space:]]*(0x[[:xdigit:]]+|[[:digit:]]+)[[:space:]]*$' \
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&& echo 'Bad window ID.' && exit 1
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treeout=$(xwininfo -children $wprefix "$window")
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fi
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wid=$(echo "$treeout" | sed -n 's/^xwininfo:.*: \(0x[[:xdigit:]]*\).*$/\1/p')
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if test -z "$wid"; then
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echo 'Failed to find window.'
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exit 1
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fi
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# Make sure it's not root window
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if echo "$treeout" | fgrep -q 'Parent window id: 0x0'; then
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echo 'Cannot set opacity on root window.'
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exit 1
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fi
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# If it's already the topmost window
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if echo "$treeout" | grep -q 'Parent window id: 0x[[:xdigit:]]* (the root window)'; then
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topmost=$wid
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else
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# Get the whole window tree
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treeout=$(xwininfo -root -tree)
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if test -z "$treeout"; then
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echo 'Failed to get root window tree.'
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exit 1
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fi
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# Find the line number of the target window in the window tree
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lineno=$(echo -n "$treeout" | grep -nw "^\s*$wid" | head -n1 | cut -d ':' -f 1)
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if test -z "$lineno"; then
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echo 'Failed to find window in window tree.'
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exit 1
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fi
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# Find the highest ancestor of the target window below
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topmost=$(echo -n "$treeout" \
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| head -n $lineno \
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| sed -n 's/^ \(0x[[:xdigit:]]*\).*/\1/p' \
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| tail -n 1)
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fi
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if test -z "$topmost"; then
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echo 'Failed to find the highest parent window below root of the' \
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'selected window.'
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exit 1
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fi
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# Get current opacity.
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cur=$(xprop -id "$topmost" -notype _NET_WM_WINDOW_OPACITY \
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| sed 's/^.*\b\([0-9]\+\).*$\|^.*$/\1/')
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# Remove the opacity property.
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if test x"$action" = x'delete' -o \( x"$action" = x'toggle' -a -n "$cur" \); then
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xprop -id "$topmost" -remove _NET_WM_WINDOW_OPACITY
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exit 0
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fi
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# Unset opacity equals fully opaque
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test -z "$cur" && cur=0xffffffff
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cur=$((cur * 100 / 0xffffffff))
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# Output current opacity.
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if test x"$action" = x'get'; then
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echo "$cur"
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exit 0
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fi
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# Calculate the desired opacity
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if echo "$opacity" | grep -q '^[+-]'; then
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opacity=$((cur + opacity))
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fi
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test $opacity -lt 0 && opacity=0
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test $opacity -gt 100 && opacity=100
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# Set opacity
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opacity=$((opacity * 0xffffffff / 100))
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xprop -id "$topmost" -f _NET_WM_WINDOW_OPACITY 32c \
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-set _NET_WM_WINDOW_OPACITY "$opacity"
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