Initial commit

xfce-night-mode.sh

@@ -0,0 +1,108 @@
+#!/bin/bash
+
+function show_usage()
+{
+  progname=`basename "$0"`
+  echo "$progname [night|day|toggle] (defaults to 'toggle')"
+  echo "$progname SUNRISE SUNSET (e.g. '8:00 18:00')"
+}
+
+function parse_args()
+{
+  case $# in
+    0)
+      echo 'toggle'
+      ;;
+    1)
+      echo "$1"
+      ;;
+    2)
+      _get_mode_by_time "$1" "$2"
+      ;;
+    *)
+      exit 1
+  esac
+}
+
+function _get_mode_by_time()
+{
+  now=`date +"%H%M"`
+  sunrise="${1/:/}"
+  sunset="${2/:/}"
+
+  if [ $now -ge $sunrise -a $now -le $sunset ]; then
+    echo 'day'
+  else
+    echo 'night'
+  fi
+}
+
+function set_night_mode()
+{
+  current_theme=`xfconf-query -c $2 -p $3`
+  if ( _is_mode_already_set "$current_theme" "$1" ); then
+    exit 0
+  fi
+
+  new_theme=`_set_$1 "$current_theme" 2> /dev/null`
+  if [ $? != 0 ]; then
+    show_usage
+    exit 1
+  fi
+
+  xfconf-query -c $2 -p $3 -s "$new_theme"
+}
+
+function _is_mode_already_set()
+{
+  if ( _is_dark "$1" ) && [ "$2" = "night" ]; then
+    exit 0
+  fi
+  if ! ( _is_dark "$1" ) && [ "$2" = "day" ]; then
+    exit 0
+  fi
+  exit 1
+}
+
+function _set_toggle()
+{
+  if ( _is_dark "$1" ); then
+    _set_day "$1"
+  else
+    _set_night "$1"
+  fi
+}
+
+function _is_dark()
+{
+  echo "$1" | grep '\-dark$' > /dev/null
+}
+
+function _set_day()
+{
+  echo "${1%-dark}"
+}
+
+function _set_night()
+{
+  if ( _is_dark "$1" ); then
+    echo "$1"
+  else
+    echo "$1-dark"
+  fi
+}
+
+mode=`parse_args $@`
+if [ $? != 0 ]; then
+  show_usage
+  exit 1
+fi
+
+# GTK theme
+set_night_mode $mode xsettings /Net/ThemeName
+
+# Icon theme
+set_night_mode $mode xsettings /Net/IconThemeName
+
+# Window manager theme
+# set_night_mode $mode xfwm4 /general/theme