added brightness and rotation controls, still WIP

init.lua

@@ -1,6 +1,7 @@
 local awful = require "awful"
 local wibox = require("wibox")
 local gears = require("gears")
+local naughty = require("naughty")
 local beautiful = require("beautiful")
 local powermenu = {
  buttonsize = 128,
@@ -15,6 +16,58 @@ local powermenu = {
  poweroff = function()
   error("Power off requested, but no function specified")
  end,
+ rotateLeft = function()
+  awful.spawn(gears.filesystem.get_configuration_dir() .. "/awesome-powermenu/rotate.lua left")
+  awesome.restart()
+ end,
+ rotateRight = function()
+  awful.spawn(gears.filesystem.get_configuration_dir() .. "/awesome-powermenu/rotate.lua right")
+  awesome.restart()
+ end,
+ brightnessUp = function()
+  awful.spawn.easy_async_with_shell("ls /sys/class/backlight/",function(stdout,stderr,_,_)
+   local devices = {}
+   for line in stdout:gmatch("%S+") do
+    local f = io.open(string.format("/sys/class/backlight/%s/brightness",line),"rb")
+    if not f then error("wtf") end
+    local brightness = tonumber(f:read("*a"))
+    f:close()
+    local f = io.open(string.format("/sys/class/backlight/%s/max_brightness",line),"rb")
+    local max_brightness = tonumber(f:read("*a"))
+    f:close()
+    devices[line]={["brightness"]=brightness,["max_brightness"]=max_brightness}
+   end
+   for k,v in pairs(devices) do
+    v.stepsize = math.floor(v.max_brightness / 10)
+    v.currentstep = math.floor(v.brightness / v.stepsize)
+    local f = io.open(string.format("/sys/class/backlight/%s/brightness",k),"wb")
+    f:write(v.stepsize * math.min(10,(v.currentstep+1)))
+    f:close()
+   end
+  end)
+ end,
+ brightnessDown = function()
+  awful.spawn.easy_async_with_shell("ls /sys/class/backlight/",function(stdout,stderr,_,_)
+   local devices = {}
+   for line in stdout:gmatch("%S+") do
+    local f = io.open(string.format("/sys/class/backlight/%s/brightness",line),"rb")
+    if not f then error("wtf") end
+    local brightness = tonumber(f:read("*a"))
+    f:close()
+    local f = io.open(string.format("/sys/class/backlight/%s/max_brightness",line),"rb")
+    local max_brightness = tonumber(f:read("*a"))
+    f:close()
+    devices[line]={["brightness"]=brightness,["max_brightness"]=max_brightness}
+   end
+   for k,v in pairs(devices) do
+    v.stepsize = math.floor(v.max_brightness / 10)
+    v.currentstep = math.floor(v.brightness / v.stepsize)
+    local f = io.open(string.format("/sys/class/backlight/%s/brightness",k),"wb")
+    f:write(v.stepsize * math.max(1,(v.currentstep-1)))
+    f:close()
+   end
+  end)
+ end
 }
 
 function powermenu.new()
@@ -32,7 +85,8 @@ function powermenu.new()
    placement    = awful.placement.centered,
    visible = false,
  }
- local function addButton(icon, fn)
+ local function addButton(icon, fn, hide)
+  if hide == nil then hide = true end
   local newButton = awful.widget.button{
    image = powermenu.iconPath .. "/" .. icon
   }
@@ -42,7 +96,9 @@ function powermenu.new()
    newButton:buttons(),
    awful.button({}, 1, nil, function()
     fn()
-    powermenuPopup:hide()
+    if hide then
+     powermenuPopup:hide()
+    end
    end)
   ))
 
@@ -52,6 +108,10 @@ function powermenu.new()
  addButton("suspend.png", powermenu.suspend)
  addButton("restart.png", awesome.restart)
  addButton("lock.png", powermenu.lock)
+ addButton("rotate-left.png", powermenu.rotateLeft)
+ addButton("rotate-right.png", powermenu.rotateRight)
+ addButton("brightness-up.png", powermenu.brightnessUp, false)
+ addButton("brightness-down.png", powermenu.brightnessDown, false)
 
  function powermenuPopup.show(self)
   self.visible = true

rotate.lua

@@ -0,0 +1,77 @@
+#!/usr/bin/env lua
+local tA = {...}
+local direction = tA[1]
+local disp = tA[2] or "LVDS-0"
+local orientations = {"normal", "right", "inverted", "left"}
+local ctms = {["normal"]="1 0 0 0 1 0 0 0 1",
+["inverted"]="-1 0 1 0 -1 1 0 0 1",
+["left"]="0 -1 1 1 0 0 0 0 1",
+["right"]="0 1 0 -1 0 1 0 0 1"}
+--[[
+xrandr -q --verbose
+LVDS-0 connected 800x1280+0+0 (0x43) left (normal left inverted right x axis y axis) 0mm x 0mm
+
+NEW_ROT="normal"
+CTM="1 0 0 0 1 0 0 0 1"
+
+NEW_ROT="inverted"
+CTM="-1 0 1 0 -1 1 0 0 1"
+
+NEW_ROT="left"
+CTM="0 -1 1 1 0 0 0 0 1"
+
+NEW_ROT="right"
+CTM="0 1 0 -1 0 1 0 0 1"
+]]
+local function nextRight(o)
+ local current = 1
+ for k,v in pairs(orientations) do
+  if o == v then
+   current = k
+  end
+ end
+ local ret = current + 1
+ if ret > #orientations then
+  ret = 1
+ end
+ return orientations[ret]
+end
+
+local function nextLeft(o)
+ local current = 1
+ for k,v in pairs(orientations) do
+  if o == v then
+   current = k
+  end
+ end
+ local ret = current - 1
+ if ret < 1 then
+  ret = #orientations
+ end
+ return orientations[ret]
+end
+
+local f = io.popen("xrandr -q --verbose","r")
+c=f:read("*a")
+f:close()
+local line = (c:match("\n("..disp:gsub("%p","%%%1") .. ".-)\n"))
+print(line)
+local orientation = line:match("%S+ %S+ %S+ %S+ (%S+) ")
+
+local f = io.popen("xinput --list","r")
+local xin=f:read("*a"):lower()
+f:close()
+--⎜   ↳ Elan Touchscreen                          id=6    [slave  pointer  (2)]
+local touchscreen = (xin:match("touch.*screen%s-id=(%d+)"))
+
+print(orientation)
+print(nextLeft(orientation))
+print(nextRight(orientation))
+local newRot = nextRight(orientation)
+if direction == "left" then
+ newRot = nextLeft(orientation)
+end
+print(string.format("xrandr --output %s --rotate %s",disp,newRot))
+os.execute(string.format("xrandr --output %s --rotate %s",disp,newRot))
+print(string.format("xinput set-prop %s 'Coordinate Transformation Matrix' %s",touchscreen,ctms[newRot]))
+os.execute(string.format("xinput set-prop %s 'Coordinate Transformation Matrix' %s",touchscreen,ctms[newRot]))