awesomewm/classes/volume/arc_widget.lua

local P = {}
P.__index = P

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

	if value > 70 then
		self.icon.image = beautiful.icons.volume.high
	elseif value > 40 then
		self.icon.image = beautiful.icons.volume.medium
	elseif value > 0 then
		self.icon.image = beautiful.icons.volume.low
	elseif value == 0 then
		self.icon.image = beautiful.icons.volume.off
	end
end

function P:set_state(state)
	-- Set widget value. (0 - 100)
	if (state == "error") then
		self.icon.image = beautiful.icons.volume.error
	elseif (state == "muted") then
		self.icon.image = beautiful.icons.volume.mute
	elseif (state == "unmuted") then
		return
	end
end

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

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

	widget.icon = wibox.widget {
		resize = true,
		image = beautiful.icons.volume.mute,
		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