+
+* Scripts
+
+This section contains various useful scripts including ones used by
+the programs above. For instance, =toggle-tablet= for switching to
+and from tablet mode on my X220T, =toggle-presentation-mode= for
+toggling Xfce's presentation mode which keeps the screen awake, and
+=rofi-light= a small utility that uses [[https://github.com/DaveDavenport/rofi][rofi]] to ask and [[https://github.com/haikarainen/light][light]] to set an
+exact brightness value.
+
+** battery-percentage-time
+:PROPERTIES:
+:header-args+: :tangle ~/.local/bin/battery-percentage-time :shebang "#!/bin/sh"
+:END:
+
+#+begin_src sh :tangle no
+dbus_send() {
+ label=$1
+ dbus-send --print-reply=literal --system \
+ --dest=org.freedesktop.UPower \
+ /org/freedesktop/UPower/devices/battery_BAT0 \
+ org.freedesktop.DBus.Properties.Get \
+ string:org.freedesktop.UPower.Device \
+ string:"${label}" | awk '{print $3}'
+}
+
+perc=$(dbus_send 'Percentage')
+state=$(dbus_send 'State')
+
+if [ "$state" -eq 2 ]; then # Discharging
+ secs=$(dbus_send 'TimeToEmpty')
+elif [ "$state" -eq 1 ]; then # Charging
+ secs=$(dbus_send 'TimeToFull')
+fi
+
+printf '%s%%%%%2dh%02dm \n' "$perc" $((secs / 3600)) $((secs % 3600 / 60))
+#+end_src
+
+** emcl
+:PROPERTIES:
+:header-args+: :tangle ~/.local/bin/emcl :shebang "#!/bin/sh"
+:END:
+
+#+begin_src sh
+exec emacsclient --alternate-editor="" -c "$@"
+#+end_src
+
+** my-i3status
+:PROPERTIES:
+:header-args+: :tangle ~/.local/bin/emcl :shebang "#!/usr/bin/env python2"
+:END:
+
+#+begin_src python
+# -*- coding: utf-8 -*-
+
+# This script is a simple wrapper which prefixes each i3status line with custom
+# information. It is based on:
+# https://github.com/i3/i3status/blob/master/contrib/wrapper.py
+#
+# In ~/.i3status.conf, add the following line:
+# output_format = "i3bar"
+# in the 'general' section.
+# Then, in ~/.config/i3/config or ~/.config/sway/config add:
+# status_command i3status | my-i3status.py
+# in the 'bar' section. Make sure my-i3status.py is in $PATH.
+#
+# © 2012 Valentin Haenel <valentin.haenel@gmx.de>
+# © 2018 Amin Bandali <bandali@gnu.org>
+#
+# This program is free software. It comes without any warranty, to the extent
+# permitted by applicable law. You can redistribute it and/or modify it under
+# the terms of the Do What The Fuck You Want To Public License (WTFPL), Version
+# 2, as published by Sam Hocevar. See http://sam.zoy.org/wtfpl/COPYING for more
+# details.
+
+import sys
+import json
+import os
+
+def get_nosleep():
+ """ Return true if ~/.nosleep exists. """
+ return os.path.isfile(os.path.expanduser("~/.nosleep"))
+
+def print_line(message):
+ """ Non-buffered printing to stdout. """
+ sys.stdout.write(message + '\n')
+ sys.stdout.flush()
+
+def read_line():
+ """ Interrupted respecting reader for stdin. """
+ # try reading a line, removing any extra whitespace
+ try:
+ line = sys.stdin.readline().strip()
+ # i3status sends EOF, or an empty line
+ if not line:
+ sys.exit(3)
+ return line
+ # exit on ctrl-c
+ except KeyboardInterrupt:
+ sys.exit()
+
+if __name__ == '__main__':
+ # Skip the first line which contains the version header.
+ print_line(read_line())
+
+ # The second line contains the start of the infinite array.
+ print_line(read_line())
+
+ while True:
+ line, prefix = read_line(), ''
+ # ignore comma at start of lines
+ if line.startswith(','):
+ line, prefix = line[1:], ','
+
+ if get_nosleep():
+ j = json.loads(line)
+ # insert information into the start of the json, but could be anywhere
+ j.insert(0, {'full_text' : '•', 'name' : 'nosleep'})
+ # and echo back new encoded json
+ print_line(prefix+json.dumps(j))
+ else:
+ print_line(prefix+line)
+#+end_src
+
+** rofi-light
+:PROPERTIES:
+:header-args+: :tangle ~/.local/bin/rofi-light :shebang "#!/bin/sh"
+:END:
+
+#+begin_src sh
+cur=$(light -G)
+val=$(rofi -dmenu -mesg "light $cur" -p "light -S " -l 0 -width 12)
+[ -n "$val" ] && light -S "$val"
+#+end_src
+
+** rofi-remmina
+:PROPERTIES:
+:header-args+: :tangle ~/.local/bin/rofi-remmina :shebang "#!/usr/bin/env python2"
+:END:
+
+#+begin_src python
+import ConfigParser
+import os
+from subprocess import Popen, PIPE
+
+remmina_dir = os.path.expanduser("~/.local/share/remmina")
+
+fdict = dict()
+
+for f in os.listdir(remmina_dir):
+ fp = os.path.join(remmina_dir, f)
+ c = ConfigParser.ConfigParser()
+ c.read(fp)
+ n = c.get('remmina', 'name')
+ fdict[n] = fp
+
+lines = max(min(15, len(fdict)), 1);
+width = len(max(fdict.keys(), key=len))
+rofi = Popen(["rofi", "-i", "-dmenu", \
+ "-l", str(lines), "-width", str(width), \
+ "-p", "connection"], stdout=PIPE, stdin=PIPE)
+selected = rofi.communicate("\n" \
+ .join(fdict.keys()) \
+ .encode("utf-8"))[0] \
+ .decode("utf-8") \
+ .strip()
+rofi.wait()
+
+r = Popen(["remmina", "-c", fdict[selected]])
+r.wait()
+#+end_src
+
+** toggle-presentation-mode
+:PROPERTIES:
+:header-args+: :tangle ~/.local/bin/toggle-presentation-mode :shebang "#!/bin/sh"
+:END:
+
+#+begin_src sh
+xfconf-query -c xfce4-power-manager -p /xfce4-power-manager/presentation-mode -T
+#+end_src
+
+** toggle-tablet
+:PROPERTIES:
+:header-args+: :tangle ~/.local/bin/toggle-tablet :shebang "#!/bin/sh"
+:END:
+
+#+begin_src sh
+# This script toggles between a 'normal' mode and a 'tablet' mode, doing
+# a few things:
+
+# - rotates the screen using =xrandr=, so that rotating the physical
+# display of my X220t would have the laptop's battery on the right
+# hand side,
+# - enables touch screen,
+# - properly rotates the stylus pen and touch screen pointers, and
+# - toggles between RGB and Vertical BGR sub-pixel order.
+
+case $(xfconf-query -c pointers -p /Wacom_ISDv4_E6_Pen_stylus/Properties/Wacom_Rotation) in
+ 0) # Screen is not rotated, we should rotate it right (90°)
+ xrandr -o 3
+ xfconf-query -c pointers -p /Wacom_ISDv4_E6_Pen_stylus/Properties/Wacom_Rotation -s 1
+ xfconf-query -c pointers -p /Wacom_ISDv4_E6_Finger_touch/Properties/Device_Enabled -s 1
+ xfconf-query -c pointers -p /Wacom_ISDv4_E6_Finger_touch/Properties/Wacom_Rotation -s 1
+ xfconf-query -c xsettings -p /Xft/RGBA -s vbgr
+ ;;
+ 1) # Currently top is rotated right, we should set it normal (0°)
+ xrandr -o 0
+ xfconf-query -c pointers -p /Wacom_ISDv4_E6_Pen_stylus/Properties/Wacom_Rotation -s 0
+ xfconf-query -c pointers -p /Wacom_ISDv4_E6_Finger_touch/Properties/Wacom_Rotation -s 0
+ xfconf-query -c pointers -p /Wacom_ISDv4_E6_Finger_touch/Properties/Device_Enabled -s 0
+ xfconf-query -c xsettings -p /Xft/RGBA -s rgb
+ ;;
+ ,*)
+ echo "Unknown result from 'xfconf-query -c pointers -p /Wacom_ISDv4_E6_Pen_stylus/Properties/Wacom_Rotation'" >&2
+ exit 1
+ ;;
+esac
+#+end_src
+
+** volume-info
+:PROPERTIES:
+:header-args+: :tangle ~/.local/bin/volume-info :shebang "#!/bin/sh"
+:END:
+
+#+begin_src sh
+cur_vol=$(pamixer --get-volume)
+
+if [ $(pamixer --get-mute) = true ]; then
+ printf 'mt \n' "$cur_vol"
+else
+ printf '%02d \n' "$cur_vol"
+fi
+#+end_src
+
+** zathura-sync
+:PROPERTIES:
+:header-args+: :tangle ~/.local/bin/zathura-sync :shebang "#!/bin/sh"
+:END:
+
+#+begin_src sh
+pos="$1"
+pdffile="$2"
+zathura --synctex-forward "$pos" "$pdffile" || \
+ (
+ zathura -x "emacsclient --eval '(progn (switch-to-buffer (file-name-nondirectory \"%{input}\")) (goto-line %{line}))'" "$pdffile" &
+ sleep 1; zathura --synctex-forward "$pos" "$pdffile" )
+#+end_src
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