awesome/src/widgets/tasklist.lua

---------------------------------
-- This is the tasklist widget --
---------------------------------

-- Awesome Libs
local awful = require('awful')
local wibox = require('wibox')
local dpi = require('beautiful').xresources.apply_dpi
local gears = require('gears')
local color = require('src.theme.colors')

local list_update = function(widget, buttons, label, data, objects)
	widget:reset()
	for _, object in ipairs(objects) do
		local task_widget = wibox.widget {
			{
				{
					{
						{
							nil,
							{
								id = "icon",
								resize = true,
								widget = wibox.widget.imagebox
							},
							nil,
							layout = wibox.layout.align.horizontal,
							id = "layout_icon"
						},
						forced_width = dpi(33),
						margins = dpi(3),
						widget = wibox.container.margin,
						id = "margin"
					},
					{
						text = "",
						align = "center",
						valign = "center",
						visible = true,
						widget = wibox.widget.textbox,
						id = "title"
					},
					layout = wibox.layout.fixed.horizontal,
					id = "layout_it"
				},
				right = dpi(5),
				left = dpi(5),
				widget = wibox.container.margin,
				id = "container"
			},
			bg = color["White"],
			fg = color["Grey900"],
			shape = function(cr, width, height)
				gears.shape.rounded_rect(cr, width, height, 5)
			end,
			widget = wibox.container.background
		}

		local task_tool_tip = awful.tooltip {
			objects = { task_widget },
			mode = "inside",
			preferred_alignments = "middle",
			preferred_positions = "bottom",
			margins = dpi(10),
			gaps = 0,
			delay_show = 1
		}

		local function create_buttons(buttons, object)
			if buttons then
				local btns = {}
				for _, b in ipairs(buttons) do
					local btn = awful.button {
						modifiers = b.modifiers,
						button = b.button,
						on_press = function()
							b:emit_signal('press', object)
						end,
						on_release = function()
							b:emit_signal('release', object)
						end
					}
					btns[#btns + 1] = btn
				end
				return btns
			end
		end

		task_widget:buttons(create_buttons(buttons, object))

		local text, _ = label(object, task_widget.container.layout_it.title)
		if object == client.focus then
			if text == nil or text == '' then
				task_widget.container.layout_it.title:set_margins(0)
			else
				local text_full = text:match('>(.-)<')
				if text_full then
					if object.class == nil then
						text = object.name
					else
						text = object.class:sub(1, 20)
					end
					task_tool_tip:set_text(text_full)
					task_tool_tip:add_to_object(task_widget)
				else
					task_tool_tip:remove_from_object(task_widget)
				end
			end
			task_widget:set_bg(color["White"])
			task_widget:set_fg(color["Grey900"])
			task_widget.container.layout_it.title:set_text(text)
		else
			task_widget:set_bg("#3A475C")
			task_widget.container.layout_it.title:set_text('')
		end
		task_widget.container.layout_it.margin.layout_icon.icon:set_image(Get_icon(user_vars.icon_theme, object))
		widget:add(task_widget)
		widget:set_spacing(dpi(6))

		--#region Hover_signal
		local old_wibox, old_cursor, old_bg
		task_widget:connect_signal(
			"mouse::enter",
			function()
				old_bg = task_widget.bg
				if object == client.focus then
					task_widget.bg = '#dddddddd'
				else
					task_widget.bg = '#3A475Cdd'
				end
				local w = mouse.current_wibox
				if w then
					old_cursor, old_wibox = w.cursor, w
					w.cursor = "hand1"
				end
			end
		)

		task_widget:connect_signal(
			"button::press",
			function()
				if object == client.focus then
					task_widget.bg = "#ffffffaa"
				else
					task_widget.bg = '#3A475Caa'
				end
			end
		)

		task_widget:connect_signal(
			"button::release",
			function()
				if object == client.focus then
					task_widget.bg = "#ffffffdd"
				else
					task_widget.bg = '#3A475Cdd'
				end
			end
		)

		task_widget:connect_signal(
			"mouse::leave",
			function()
				task_widget.bg = old_bg
				if old_wibox then
					old_wibox.cursor = old_cursor
					old_wibox = nil
				end
			end
		)
		--#endregion

	end
	return widget
end

return function(s)
	return awful.widget.tasklist(
		s,
		awful.widget.tasklist.filter.currenttags,
		awful.util.table.join(
			awful.button(
				{},
				1,
				function(c)
					if c == client.focus then
						c.minimized = true
					else
						c.minimized = false
						if not c:isvisible() and c.first_tag then
							c.first_tag:view_only()
						end
						c:emit_signal('request::activate')
						c:raise()
					end
				end
			),
			awful.button(
				{},
				3,
				function(c)
					c:kill()
				end
			)
		),
		{},
		list_update,
		wibox.layout.fixed.horizontal()
	)
end