awesomewm/classes/backlight/arc_widget.lua

local P = {}

function P:set_value(value)
	-- Set widget value. (0 - 100)
	self.arc.value = value

	--[[
	if     value >  90 then self.icon.image = beautiful.icons.brightness.i
	elseif value >  80 then self.icon.image = beautiful.icons.brightness.h
	elseif value >  70 then self.icon.image = beautiful.icons.brightness.g
	elseif value >  60 then self.icon.image = beautiful.icons.brightness.f
	elseif value >  50 then self.icon.image = beautiful.icons.brightness.e
	elseif value >  40 then self.icon.image = beautiful.icons.brightness.d
	elseif value >  30 then self.icon.image = beautiful.icons.brightness.c
	elseif value >  20 then self.icon.image = beautiful.icons.brightness.b
	elseif value <= 10 then self.icon.image = beautiful.icons.brightness.a
	end
	--]]
end

function P:set_state(state)
	return
end

function P:set_tooltip(text)
	-- Set widget value. (0 - 100)
	self.tooltip.text = text
end

function P:new()
	local widget = {}
	setmetatable(widget, self)
	self.__index = self

	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)
			},
			{
				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.tooltip = awful.tooltip {
		objects = { widget.widget },
		text = ""
	}

	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)

	return widget
end

return P