keyboard: use kbdd for keyboard switching

A popup is used to indicate the current keyboard layout. Maybe we
could use a widget instead.

rc.lua

@@ -54,8 +54,10 @@ config.hostname = awful.util.pread('uname -n'):gsub('\n', '')
 -- Remaining modules
 loadrc("xrun")			-- xrun function
 loadrc("appearance")		-- theme and appearance settings
+
 loadrc("start")			-- programs to run on start
 loadrc("bindings")		-- keybindings
+loadrc("keyboard")		-- keyboard configuration
 loadrc("wallpaper")		-- wallpaper settings
 loadrc("tags")			-- tags handling
 loadrc("widgets")		-- widgets configuration

rc/keyboard.lua

@@ -0,0 +1,55 @@
+-- Keyboard configuration with kbdd
+
+-- Global configuration
+if config.hostname == "guybrush" then
+   os.execute("setxkbmap us,fr '' compose:rctrl ctrl:nocaps")
+else
+   os.execute("setxkbmap us,fr '' compose:rwin ctrl:nocaps")
+end
+
+-- Additional mappings
+local mappings = { Pause = "XF86ScreenSaver" }
+if config.hostname == "guybrush" then
+   mappings = { XF86AudioPlay = "XF86ScreenSaver" }
+end
+
+
+
+local function update_mappings()
+   for src, dst in pairs(mappings) do
+      os.execute(string.format("xmodmap -e 'keysym %s = %s'", src, dst))
+   end
+end
+
+local qdbus = {
+   check = "qdbus ru.gentoo.KbddService /ru/gentoo/KbddService",
+   next  = "qdbus ru.gentoo.KbddService /ru/gentoo/KbddService ru.gentoo.kbdd.next_layout"
+}
+
+-- Display a notification if the layout changed
+local nid = nil
+dbus.request_name("session", "ru.gentoo.kbdd")
+dbus.add_match("session", "interface='ru.gentoo.kbdd',member='layoutNameChanged'")
+dbus.add_signal("ru.gentoo.kbdd",
+		function(...)
+		   local data = {...}
+		   local layout = data[2]
+		   update_mappings()
+		   nid = naughty.notify({ title = "Keyboard layout changed",
+					  text = "New layout is <i>" .. layout .. "</i>",
+					  replaces_id = nid,
+					  icon = "/usr/share/icons/gnome/32x32/devices/keyboard.png",
+					  screen = client.focus.screen }).id
+		end)
+
+config.keys.global = awful.util.table.join(
+   config.keys.global,
+   awful.key({ modkey }, "=",
+	     function()
+		os.execute(qdbus.next)
+	     end))
+
+-- Run kbdd if not running
+if os.execute(qdbus.check .. " 2> /dev/null > /dev/null") ~= 0 then
+   awful.util.spawn("kbdd")
+end

rc/start.lua

@@ -24,23 +24,17 @@ local execute = {
 if config.hostname == "naruto" then
    execute = awful.util.table.join(
       execute, {
-	 -- Keyboard configuration
 	 "xset m 4 3",	-- Mouse acceleration
-	 "setxkbmap us '' compose:rwin ctrl:nocaps",
+	       })
-	 "xmodmap -e 'keysym Pause = XF86ScreenSaver'" })
 elseif config.hostname == "neo" then
    execute = awful.util.table.join(
       execute, {
 	 -- Keyboard configuration
 	 "xset m 3 3",	-- Mouse acceleration
-	 "setxkbmap us '' compose:rwin ctrl:nocaps",
+	       })
-	 "xmodmap -e 'keysym Pause = XF86ScreenSaver'"})
 elseif config.hostname == "guybrush" then
    execute = awful.util.table.join(
       execute, {
-	 -- Keyboard configuration
-	 "setxkbmap us '' compose:rctrl ctrl:nocaps",
-	 "xmodmap -e 'keysym XF86AudioPlay = XF86ScreenSaver'",
 	 -- Wheel emulation
 	 "xinput set-int-prop 'TPPS/2 IBM TrackPoint' 'Evdev Wheel Emulation' 8 1",
 	 "xinput set-int-prop 'TPPS/2 IBM TrackPoint' 'Evdev Wheel Emulation Button' 8 2",