Introduce xblank

4 files changed, 278 insertions, 4 deletions

diff --git a/.config/sxhkd/sxhkdrc b/.config/sxhkd/sxhkdrc
index aae73ee..85ccdc6 100644
--- a/.config/sxhkd/sxhkdrc
+++ b/.config/sxhkd/sxhkdrc
@@ -31,6 +31,9 @@ XF86MonBrightness{Up,Down}
 super + shift + s
 	physlock
 
+shift + Pause
+	xblank-toggle
+
 # printscreens
 Print
 	sscrot
diff --git a/.local/bin/xblank b/.local/bin/xblank
new file mode 100755
index 0000000..dc675d9
--- /dev/null
+++ b/.local/bin/xblank
@@ -0,0 +1,204 @@
+#!/bin/sh
+
+# This program is free software: you can redistribute it and/or modify it under
+# the terms of the GNU Affero General Public License as published by the Free
+# Software Foundation, either version 3 of the License, or (at your option) any
+# later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
+# details.
+
+readonly PROGRAM_NAME="$(basename "$0")"
+
+main()
+{
+	# Handle opts
+	while getopts ":C:S:c:ht:v" opt
+	do
+		case "$opt" in
+			S) rundir=$OPTARG ;;
+			d) command_dir=$OPTARG ;;
+			h) usage && exit 0 ;;
+			v) verbose=1 ;;
+			*)
+				printf "Invalid option passed: %s\n" "$OPTARG" >&2
+				;;
+		esac
+	done
+
+	shift $(( OPTIND - 1 ))
+
+	# Set default values
+	[ -z "$rundir" ] && rundir="$XDG_RUNTIME_DIR/$PROGRAM_NAME"
+
+	time_old=0
+	time_now="$(xprintidle)"
+
+	# Check availability of dependencies
+	for i in xprintidle xset
+	do
+		command -v "$i" >/dev/null && continue
+
+		log "Missing dependency $i"
+		exit 3
+	done
+
+	# Ensure $DISPLAY is set
+	if [ -z "$DISPLAY" ]
+	then
+		log "\$DISPLAY is unset"
+		exit 4
+	fi
+
+	# Initialize the rundir
+	log "Create rundir ($rundir)"
+	mkdir -p -- "$rundir"
+
+	printf "0\n" > "$rundir/paused"
+	[ ! -f "$rundir/state" ] && printf "active\n" > "$rundir/state"
+
+	# Enter the loop
+	while :
+	do
+		# Do nothing if the program is paused
+		if is_paused
+		then
+			log "$PROGRAM_NAME is paused ($rundir)"
+
+			sleep 1
+			continue
+		fi
+
+		# Get the time the system has been idle in milliseconds
+		time_old=$time_now
+		time_now="$(($(xprintidle) / 1000))"
+
+		# Run command_active upon detecting activity
+		if [ "$((time_now))" -lt "$((time_old))" ]
+		then
+			log "Detected activity ($time_now < $time_old)"
+			cmd="$(get_script active)"
+
+			if [ "$cmd" = "" ]
+			then
+				log "No executable found for activation"
+
+				sleep 1
+				continue
+			fi
+
+			log "> $cmd"
+			$cmd
+		fi
+
+		# Run command based on inactivity duration
+		loop_index=$(($time_old))
+
+		log "Running (potential) scripts $time_old through $time_now"
+
+		while [ "$(($loop_index))" -lt "$(($time_now))" ]
+		do
+			loop_index="$(($loop_index + 1))"
+
+			log "Running script for $loop_index"
+
+			cmd=$(get_script idle_$loop_index)
+
+			if [ "$cmd" = "" ]
+			then
+				log "No executable found for idling (${loop_index}s)"
+
+				continue
+			fi
+
+			log "> $cmd"
+			$cmd
+		done
+
+		# Sleep to not burn your CPU
+		sleep 1
+	done
+}
+
+get_script()
+{
+	if [ -n "$command_dir" ]
+	then
+		if [ -x "$command_dir/$1" ]
+		then
+			printf "%s\n" "$command_dir/$1"
+			return
+		fi
+
+		# Don't continue if a command_dir was explicitly set
+		return
+	fi
+
+	set -f
+	OIFS=$IFS
+	IFS=:
+
+	dirs="$XDG_CONFIG_HOME:$XDG_CONFIG_DIRS:$HOME/.config"
+
+	for dir in $dirs
+	do
+		[ "$dir" = "" ] && continue
+
+		if [ -x "$dir/$PROGRAM_NAME/$1" ]
+		then
+			printf "%s\n" "$dir/$PROGRAM_NAME/$1"
+			return
+		fi
+	done
+
+	IFS=$OIFS
+	set +f
+}
+
+is_paused()
+{
+	if [ "$(head -n 1 "$rundir/paused")" = "0" ]
+	then
+		return 1
+	fi
+
+	return 0
+}
+
+log()
+{
+	[ -z "$verbose" ] && return
+
+	printf "[%s] %s\n" "$(prettify_time "$time_now")" "$*" >&2
+}
+
+prettify_time()
+{
+	printf "%03dh %02dm %02ds\n" \
+		"$(( $1 / 60 / 60 ))" \
+		"$(( $1 / 60 % 60 ))" \
+		"$(( $1 % 60 ))"
+}
+
+usage()
+{
+	cat <<EOF
+Usage:
+	${0##*/} -h
+	${0##*/} [-C <command>] [-R <path>] [-c <command>] [-t <timeout>] [-v]
+
+Force-blank the screen after a certain timeout.
+
+Options:
+	-C  Set the command to run when X is becoming active.
+	-R  Set the location of the rundir.
+	-c  Set the command to run when X is going idle.
+	-h  Show this help text and exit.
+	-t  Set the timeout in seconds. Defaults to 60.
+	-v  Add verbosity.
+EOF
+}
+
+main "$@"
diff --git a/.local/bin/xblank-toggle b/.local/bin/xblank-toggle
new file mode 100755
index 0000000..f013b93
--- /dev/null
+++ b/.local/bin/xblank-toggle
@@ -0,0 +1,66 @@
+#!/bin/sh
+
+# This program is free software: you can redistribute it and/or modify it under
+# the terms of the GNU Affero General Public License as published by the Free
+# Software Foundation, either version 3 of the License, or (at your option) any
+# later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
+# details.
+
+main()
+{
+	# Handle opts
+	while getopts ":S:h" opt
+	do
+		case "$opt" in
+			S) rundir=$OPTARG ;;
+			h) usage && exit 0 ;;
+			*)
+				printf "Invalid option passed: %s\n" "$OPTARG" >&2
+				;;
+		esac
+	done
+
+	shift $(( OPTIND - 1 ))
+
+	# Set default values
+	[ -z "$rundir" ] && rundir="$XDG_RUNTIME_DIR/xblank"
+
+	# Check if xblank is currently paused
+	if [ "$(head -n 1 "$rundir/paused")" = "0" ]
+	then
+		# xblank is currently not paused
+		printf "1\n" > "$rundir/paused"
+		notify "stock_lock-open" "xblank" "Paused"
+	else
+		# xblank is already paused
+		printf "0\n" > "$rundir/paused"
+		notify "stock_lock" "xblank" "Unpaused"
+	fi
+}
+
+notify()
+{
+	icon=$1
+	shift
+
+	notify-send -i "$icon" -n 26012 -s -t 3 "$@"
+}
+
+usage()
+{
+	cat <<EOF
+Usage:
+	${0##*/} -h
+
+Nondescript
+
+Options:
+	-h  Show this help text and exit.
+EOF
+}
+
+main "$@"
diff --git a/.local/etc/x/xinitrc b/.local/etc/x/xinitrc
index e006f3d..f3da549 100644
--- a/.local/etc/x/xinitrc
+++ b/.local/etc/x/xinitrc
@@ -39,14 +39,15 @@ pulseaudio --start
 # set a wallpaper
 chwp &
 
+# Turn off any screen blanking features
+xset s off
+xset -dpms
+
 # start background processes
 redshift -l 51.50:4.59 &
 dunst &
 sxhkd &
-
-# Turn off any screen blanking features
-xset s off
-xset -dpms
+xblank &
 
 # Set up a screenlock
 xss-lock -- physlock -d &