Added backlight module

modules/backlight/backlight.fish

@@ -0,0 +1,37 @@
+#!/usr/bin/fish
+#
+# Usage:
+#   backlight get
+#   backlight set [value]
+#   backlight max
+#
+# Returns:
+#	Set - nothing
+#	Get, max - Number between 0 and 100 (eg: 0, 25.445283, 100)
+#
+
+function backlight
+	switch $argv[1]
+		case "get"
+			xbacklight -get
+		case "max"
+			echo 100
+		case "set"
+			xbacklight -set $argv[2]
+		case "up"
+			xbacklight -inc 10
+		case "down"
+			xbacklight -dec 10
+		case "*"
+			echo "Unknown function \"$argv[1]\""
+			echo ""
+			echo "Usage:"
+			echo "  backlight get"
+			echo "  backlight set [value]"
+			echo "  backlight max"
+			return 0
+	end
+	return 1
+end
+
+backlight $argv

modules/backlight/init.lua

@@ -0,0 +1,6 @@
+return {
+	widgets = {
+		backlight = require("modules.backlight.widget").widget
+	},
+	keybinds = require("modules.backlight.keybinds"),
+}

modules/backlight/keybinds.lua

@@ -0,0 +1,58 @@
+local backlight = req_rel(..., "util")
+
+return gears.table.join(
+	awful.key( {}, "XF86MonBrightnessUp",
+		function ()
+			backlight.backlight_up()
+		end,
+		{
+			description = "Raise brightness",
+			group = "System"
+		}
+	),
+
+	awful.key( {}, "XF86MonBrightnessDown",
+		function ()
+			backlight.backlight_down()
+		end,
+		{
+			description = "Lower brightness",
+			group = "System"
+		}
+	),
+
+	awful.key( { "Mod4" }, "o",
+		function ()
+			backlight.redshift(5600)
+		end,
+		{
+			description = "Default redshift",
+			group = "System"
+		}
+	),
+
+	awful.key( { "Mod4", "Shift" }, "o",
+		function ()
+			backlight.reset_redshift()
+		end,
+		{
+			description = "Reset redshift",
+			group = "System"
+		}
+	),
+
+	awful.key( { "Mod4", "Shift", "Control" }, "o",
+		function ()
+			backlight.reset_redshift()
+			awful.prompt.run {
+				prompt = "<b>Color temperature: </b>",
+				textbox = awful.screen.focused().mypromptbox.widget,
+				exe_callback = backlight.redshift
+			}
+		end,
+		{
+			description = "Set redshift",
+			group = "System"
+		}
+	)
+)

modules/backlight/util.lua

@@ -0,0 +1,62 @@
+local backlight = {}
+
+-- The space at the end is important!
+local script = configuration_dir .. "modules/backlight/backlight.fish"
+script = script .. " "
+
+backlight.hooks = {}
+backlight.add_hook = function(callback)
+	backlight.hooks[#backlight.hooks + 1] = callback
+end
+
+backlight.exec_hooks = function()
+	backlight.read(function(status)
+		for i=1, #backlight.hooks do
+			backlight.hooks[i](status)
+		end
+	end)
+end
+
+backlight.read = function(callback)
+	awful.spawn.easy_async(
+		script .. "get",
+		function(stdout, stderr, exitreason, exitcode)
+			callback(tonumber(stdout))
+		end
+	)
+end
+
+backlight.set = function(value)
+awful.spawn(script .. "set " .. value, false)
+end
+
+backlight.watch = function(timeout, callback, widget)
+	awful.widget.watch(
+		script .. "get",
+		timeout,
+		callback,
+		widget
+	)
+end
+
+
+backlight.backlight_up = function()
+	awful.spawn(script .. "up", false)
+	backlight.exec_hooks()
+end
+
+backlight.backlight_down = function()
+	awful.spawn(script .. "down", false)
+	backlight.exec_hooks()
+end
+
+backlight.redshift = function(temp)
+	awful.spawn("redshift -O " .. tostring(temp), false)
+end
+
+backlight.reset_redshift = function()
+	awful.spawn("redshift -x", false)
+end
+
+
+return backlight

modules/backlight/widget.lua

@@ -0,0 +1,101 @@
+local backlight = req_rel(..., "util")
+local widget = {}
+
+
+widget.icon = wibox.widget {
+	id = "icon",
+	image = beautiful.icons.brightness.i,
+	resize = true,
+	widget = wibox.widget.imagebox,
+}
+
+widget.arc = wibox.widget {
+	{
+		widget.icon,
+		top = beautiful.dpi(1),
+		bottom = beautiful.dpi(1),
+		layout = wibox.container.margin,
+	},
+	max_value = 100,
+	thickness = beautiful.dpi(4),
+	start_angle = 4.71238898, -- 2pi*3/4
+	--forced_height = beautiful.dpi(16),
+	--forced_width = beautiful.dpi(16),
+	colors = {"#27D4CC", "#00446B"},
+	bg = "#FFFFFF30",
+	paddings = beautiful.dpi(2),
+	widget = wibox.container.arcchart
+}
+
+
+widget.widget = wibox.widget {
+	{
+		{   -- Right space
+			widget = wibox.widget.separator,
+			color = beautiful.color.transparent,
+			forced_width = beautiful.dpi(3)
+		},
+		{   -- Main indicator. Can be replaced with widget.arc
+			widget.arc,
+			top = beautiful.dpi(2),
+			bottom = beautiful.dpi(2),
+			layout = wibox.container.margin,
+		},
+		{   -- Left space
+			widget = wibox.widget.separator,
+			color = beautiful.color.transparent,
+			forced_width = beautiful.dpi(3)
+		},
+		layout = wibox.layout.align.horizontal,
+	},
+	layout = wibox.container.background,
+}
+
+widget.widget:connect_signal("mouse::enter", function(result)
+	widget.widget.bg = beautiful.color.bar.hover_bg
+
+end)
+
+widget.widget:connect_signal("mouse::leave", function(result)
+	widget.widget.bg = beautiful.color.transparent
+end)
+
+widget.widget:connect_signal("button::press",
+	function(_, _, _, button, mods)
+		-- Scroll up
+		if (button == 4) then
+			backlight.backlight_up()
+		-- Scroll down
+		elseif (button == 5) then
+			backlight.backlight_down()
+		end
+	end
+)
+
+widget.update = function(value)
+	widget.arc.value = value
+
+	--[[if     value >  90 then widget.icon.image = beautiful.icons.brightness.i
+	elseif value >  80 then widget.icon.image = beautiful.icons.brightness.h
+	elseif value >  70 then widget.icon.image = beautiful.icons.brightness.g
+	elseif value >  60 then widget.icon.image = beautiful.icons.brightness.f
+	elseif value >  50 then widget.icon.image = beautiful.icons.brightness.e
+	elseif value >  40 then widget.icon.image = beautiful.icons.brightness.d
+	elseif value >  30 then widget.icon.image = beautiful.icons.brightness.c
+	elseif value >  20 then widget.icon.image = beautiful.icons.brightness.b
+	elseif value <= 10 then widget.icon.image = beautiful.icons.brightness.a end
+	--]]
+
+end
+
+
+backlight.add_hook(widget.update)
+backlight.watch(
+	5,
+	function()
+		backlight.read(widget.update)
+	end,
+	widget.widget
+)
+
+return widget