awesomewm/modules/backlight/popup.lua

local backlight = req_rel(..., "util")

return function(s)
	local widget = wibox.widget {
		{
			{
				{
					{  -- Icon and margins
						nil,
						{
							nil,
							{
								id = "icon",
								forced_height = beautiful.dpi(100),
								image = beautiful.icons.brightness.i,
								widget = wibox.widget.imagebox
							},
							nil,
							expand = "none",
							id = "icon_margin2",
							layout = wibox.layout.align.vertical
						},
						nil,
						id = "icon_margin1",
						expand = "none",
						layout = wibox.layout.align.horizontal
					},
					{  -- Text and percentage
						{
							id = "label",
							text = "Backlight",
							align = "left",
							valign = "center",
							widget = wibox.widget.textbox
						},
						nil,
						{
							id = "value",
							text = "0%",
							align = "center",
							valign = "center",
							widget = wibox.widget.textbox
						},
						id = "label_value_layout",
						forced_height = beautiful.dpi(48),
						layout = wibox.layout.align.horizontal,
					},
					{  -- Progress bar
						{
							id = "backlight_bar",
							shape = gears.shape.rounded_bar,
							forced_height = beautiful.dpi(10),
							background_color = "#AAAAAA88",
							bar_color = "#ffffff",
							color = "#ffffff",
							bar_shape = gears.shape.rounded_bar,
							max_value = 100,
							widget = wibox.widget.progressbar
						},
						id = "bar_layout",
						forced_height = beautiful.dpi(24),
						widget = wibox.container.place
					},
					id = "icon_bar_layout",
					spacing = beautiful.dpi(0),
					layout = wibox.layout.align.vertical
				},
				id = "popup_layout",
				layout = wibox.layout.align.vertical,
			},
			id = "container",
			left = beautiful.dpi(20),
			right = beautiful.dpi(20),
			top = beautiful.dpi(10),
			bottom = beautiful.dpi(10),
			widget = wibox.container.margin
		},
		bg ="#000000FF",
		widget = wibox.container.background,
		ontop = true,
		visible = true,
		type = "notification",
		forced_height = beautiful.dpi(180),
		forced_width = beautiful.dpi(300),
		offset = beautiful.dpi(5),
	}

	local popup_container = awful.popup {
		widget = wibox.container.background,
		ontop = true,
		bg = "#00000000",
		stretch = false,
		visible = false,
		screen = s,

		placement = function(c)
			awful.placement.bottom_right(
				c,
				{
					honor_workarea = true,
					margins = {
						top = beautiful.dpi(200)
					}
				}
			)
		end,

		-- Only set corner radius here.
		shape = function(cr, width, height)
			gears.shape.partially_rounded_rect(
				cr,
				width,
				height,
				true,
				false,
				false,
				false,
				beautiful.dpi(20)
			)
		end
	}

	popup_container:setup {
		widget,
		layout = wibox.layout.fixed.horizontal
	}


	awesome.connect_signal("module::backlight:update",
		function(value)

			if value == nil then
				value = 0
			end

			-- Update slider
			widget.
				container.
				popup_layout.
				icon_bar_layout.
				bar_layout.
				backlight_bar:set_value(value)

			-- Update text
			widget.
				container.
				popup_layout.
				icon_bar_layout.
				label_value_layout.
				value:set_text(value .. "%")

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

			widget.
				container.
				popup_layout.
				icon_bar_layout.
				icon_margin1.
				icon_margin2.
				icon:set_image(icon)
		end
	)

	local hide_popup_timer = gears.timer {
		timeout = 1,
		autostart = true,
		callback = function()
			popup_container.visible = false
		end
	}

	awesome.connect_signal("module::all:popup_hide",
		function(except)
			if (except == "backlight") then
				return
			end
			popup_container.visible = false
			if hide_popup_timer.started then
				hide_popup_timer:stop()
			end
		end
	)


	awesome.connect_signal("module::backlight:popup_show",
		function()
			awesome.emit_signal("module::all:popup_hide", "backlight")
			if s == mouse.screen then
				popup_container.visible = true
			end

			if hide_popup_timer.started then
				hide_popup_timer:again()
			else
				hide_popup_timer:start()
			end
		end
	)

	awesome.connect_signal("module::backlight:popup_show_stay",
		function()
			awesome.emit_signal("module::all:popup_hide", "backlight")
			if s == mouse.screen then
				popup_container.visible = true
			end

			if hide_popup_timer.started then
				hide_popup_timer:stop()
			end
		end
	)


	popup_container:connect_signal("button::press",
		function(_, _, _, button, mods)
			-- Scroll up
			if (button == 4) then
				backlight.backlight_up(config.backlight.scroll_step)

			-- Scroll down
			elseif (button == 5) then
				backlight.backlight_down(config.backlight.scroll_step)
			end
		end
	)

	popup_container:connect_signal("mouse::enter", function(result)
		awesome.emit_signal("module::backlight:popup_show_stay")
	end)

	popup_container:connect_signal("mouse::leave", function(result)
		awesome.emit_signal("module::backlight:popup_show")
	end)

end