340 lines
13 KiB
Lua
340 lines
13 KiB
Lua
-------------------------------------------------
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-- CPU Widget for Awesome Window Manager
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-- Shows the current CPU utilization
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-- More details could be found here:
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-- https://github.com/streetturtle/awesome-wm-widgets/tree/master/cpu-widget
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-- @author Pavel Makhov
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-- @copyright 2020 Pavel Makhov
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-------------------------------------------------
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local awful = require("awful")
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local watch = require("awful.widget.watch")
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local wibox = require("wibox")
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local beautiful = require("beautiful")
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local gears = require("gears")
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local CMD = [[sh -c "grep '^cpu.' /proc/stat; ps -eo '%p|%c|%C|' -o "%mem" -o '|%a' --sort=-%cpu ]]
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.. [[| head -11 | tail -n +2"]]
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-- A smaller command, less resource intensive, used when popup is not shown.
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local CMD_slim = [[grep --max-count=1 '^cpu.' /proc/stat]]
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local HOME_DIR = os.getenv("HOME")
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local WIDGET_DIR = HOME_DIR .. '/.config/awesome/awesome-wm-widgets/cpu-widget'
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local cpu_widget = {}
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local cpu_rows = {
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spacing = 4,
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layout = wibox.layout.fixed.vertical,
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}
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local is_update = true
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local process_rows = {
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layout = wibox.layout.fixed.vertical,
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}
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-- Splits the string by separator
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-- @return table with separated substrings
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local function split(string_to_split, separator)
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if separator == nil then separator = "%s" end
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local t = {}
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for str in string.gmatch(string_to_split, "([^".. separator .."]+)") do
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table.insert(t, str)
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end
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return t
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end
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-- Checks if a string starts with a another string
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local function starts_with(str, start)
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return str:sub(1, #start) == start
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end
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local function create_textbox(args)
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return wibox.widget{
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text = args.text,
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align = args.align or 'left',
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markup = args.markup,
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forced_width = args.forced_width or 40,
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widget = wibox.widget.textbox
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}
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end
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local function create_process_header(params)
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local res = wibox.widget{
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create_textbox{markup = '<b>PID</b>'},
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create_textbox{markup = '<b>Name</b>'},
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{
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create_textbox{markup = '<b>%CPU</b>'},
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create_textbox{markup = '<b>%MEM</b>'},
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params.with_action_column and create_textbox{forced_width = 20} or nil,
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layout = wibox.layout.align.horizontal
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},
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layout = wibox.layout.ratio.horizontal
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}
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res:ajust_ratio(2, 0.2, 0.47, 0.33)
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return res
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end
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local function create_kill_process_button()
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return wibox.widget{
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{
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id = "icon",
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image = WIDGET_DIR .. '/window-close-symbolic.svg',
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resize = false,
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opacity = 0.1,
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widget = wibox.widget.imagebox
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},
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widget = wibox.container.background
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}
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end
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local function worker(user_args)
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local args = user_args or {}
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local width = args.width or 50
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local step_width = args.step_width or 2
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local step_spacing = args.step_spacing or 1
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local color = args.color or beautiful.fg_normal
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local background_color = args.background_color or "#00000000"
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local enable_kill_button = args.enable_kill_button or false
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local process_info_max_length = args.process_info_max_length or -1
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local timeout = args.timeout or 1
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local cpugraph_widget = wibox.widget {
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max_value = 100,
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background_color = background_color,
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forced_width = width,
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step_width = step_width,
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step_spacing = step_spacing,
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widget = wibox.widget.graph,
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color = "linear:0,0:0,20:0,#FF0000:0.3,#FFFF00:0.6," .. color
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}
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-- This timer periodically executes the heavy command while the popup is open.
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-- It is stopped when the popup is closed and only the slim command is run then.
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-- This greatly improves performance while the popup is closed at the small cost
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-- of a slightly longer popup opening time.
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local popup_timer = gears.timer {
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timeout = timeout
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}
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local popup = awful.popup{
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ontop = true,
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visible = false,
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shape = gears.shape.rounded_rect,
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border_width = 1,
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border_color = beautiful.bg_normal,
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maximum_width = 300,
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offset = { y = 5 },
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widget = {}
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}
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-- Do not update process rows when mouse cursor is over the widget
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popup:connect_signal("mouse::enter", function() is_update = false end)
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popup:connect_signal("mouse::leave", function() is_update = true end)
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cpugraph_widget:buttons(
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awful.util.table.join(
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awful.button({}, 1, function()
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if popup.visible then
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popup.visible = not popup.visible
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-- When the popup is not visible, stop the timer
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popup_timer:stop()
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else
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popup:move_next_to(mouse.current_widget_geometry)
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-- Restart the timer, when the popup becomes visible
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-- Emit the signal to start the timer directly and not wait the timeout first
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popup_timer:start()
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popup_timer:emit_signal("timeout")
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end
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end)
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)
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)
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--- By default graph widget goes from left to right, so we mirror it and push up a bit
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cpu_widget = wibox.widget {
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{
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cpugraph_widget,
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reflection = {horizontal = true},
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layout = wibox.container.mirror
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},
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bottom = 2,
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color = background_color,
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widget = wibox.container.margin
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}
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-- This part runs constantly, also when the popup is closed.
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-- It updates the graph widget in the bar.
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local maincpu = {}
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watch(CMD_slim, timeout, function(widget, stdout)
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local _, user, nice, system, idle, iowait, irq, softirq, steal, _, _ =
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stdout:match('(%w+)%s+(%d+)%s(%d+)%s(%d+)%s(%d+)%s(%d+)%s(%d+)%s(%d+)%s(%d+)%s(%d+)%s(%d+)')
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local total = user + nice + system + idle + iowait + irq + softirq + steal
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local diff_idle = idle - tonumber(maincpu['idle_prev'] == nil and 0 or maincpu['idle_prev'])
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local diff_total = total - tonumber(maincpu['total_prev'] == nil and 0 or maincpu['total_prev'])
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local diff_usage = (1000 * (diff_total - diff_idle) / diff_total + 5) / 10
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maincpu['total_prev'] = total
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maincpu['idle_prev'] = idle
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widget:add_value(diff_usage)
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end,
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cpugraph_widget
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)
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-- This part runs whenever the timer is fired.
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-- It therefore only runs when the popup is open.
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local cpus = {}
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popup_timer:connect_signal('timeout', function()
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awful.spawn.easy_async(CMD, function(stdout, _, _, _)
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local i = 1
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local j = 1
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for line in stdout:gmatch("[^\r\n]+") do
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if starts_with(line, 'cpu') then
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if cpus[i] == nil then cpus[i] = {} end
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local name, user, nice, system, idle, iowait, irq, softirq, steal, _, _ =
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line:match('(%w+)%s+(%d+)%s(%d+)%s(%d+)%s(%d+)%s(%d+)%s(%d+)%s(%d+)%s(%d+)%s(%d+)%s(%d+)')
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local total = user + nice + system + idle + iowait + irq + softirq + steal
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local diff_idle = idle - tonumber(cpus[i]['idle_prev'] == nil and 0 or cpus[i]['idle_prev'])
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local diff_total = total - tonumber(cpus[i]['total_prev'] == nil and 0 or cpus[i]['total_prev'])
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local diff_usage = (1000 * (diff_total - diff_idle) / diff_total + 5) / 10
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cpus[i]['total_prev'] = total
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cpus[i]['idle_prev'] = idle
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local row = wibox.widget
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{
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create_textbox{text = name},
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create_textbox{text = math.floor(diff_usage) .. '%'},
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{
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max_value = 100,
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value = diff_usage,
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forced_height = 20,
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forced_width = 150,
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paddings = 1,
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margins = 4,
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border_width = 1,
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border_color = beautiful.bg_focus,
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background_color = beautiful.bg_normal,
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bar_border_width = 1,
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bar_border_color = beautiful.bg_focus,
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color = "linear:150,0:0,0:0,#D08770:0.3,#BF616A:0.6," .. beautiful.fg_normal,
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widget = wibox.widget.progressbar,
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},
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layout = wibox.layout.ratio.horizontal
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}
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row:ajust_ratio(2, 0.15, 0.15, 0.7)
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cpu_rows[i] = row
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i = i + 1
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else
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if is_update == true then
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local columns = split(line, '|')
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local pid = columns[1]
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local comm = columns[2]
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local cpu = columns[3]
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local mem = columns[4]
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local cmd = columns[5]
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local kill_proccess_button = enable_kill_button and create_kill_process_button() or nil
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local pid_name_rest = wibox.widget{
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create_textbox{text = pid},
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create_textbox{text = comm},
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{
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create_textbox{text = cpu, align = 'center'},
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create_textbox{text = mem, align = 'center'},
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kill_proccess_button,
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layout = wibox.layout.fixed.horizontal
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},
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layout = wibox.layout.ratio.horizontal
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}
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pid_name_rest:ajust_ratio(2, 0.2, 0.47, 0.33)
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local row = wibox.widget {
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{
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pid_name_rest,
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top = 4,
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bottom = 4,
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widget = wibox.container.margin
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},
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widget = wibox.container.background
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}
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row:connect_signal("mouse::enter", function(c) c:set_bg(beautiful.bg_focus) end)
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row:connect_signal("mouse::leave", function(c) c:set_bg(beautiful.bg_normal) end)
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if enable_kill_button then
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row:connect_signal("mouse::enter", function() kill_proccess_button.icon.opacity = 1 end)
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row:connect_signal("mouse::leave", function() kill_proccess_button.icon.opacity = 0.1 end)
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kill_proccess_button:buttons(
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awful.util.table.join( awful.button({}, 1, function()
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row:set_bg('#ff0000')
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awful.spawn.with_shell('kill -9 ' .. pid)
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end) ) )
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end
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awful.tooltip {
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objects = { row },
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mode = 'outside',
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preferred_positions = {'bottom'},
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timer_function = function()
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local text = cmd
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if process_info_max_length > 0 and text:len() > process_info_max_length then
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text = text:sub(0, process_info_max_length - 3) .. '...'
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end
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return text
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:gsub('%s%-', '\n\t-') -- put arguments on a new line
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:gsub(':/', '\n\t\t:/') -- java classpath uses : to separate jars
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end,
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}
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process_rows[j] = row
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j = j + 1
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end
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end
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end
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popup:setup {
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{
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cpu_rows,
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{
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orientation = 'horizontal',
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forced_height = 15,
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color = beautiful.bg_focus,
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widget = wibox.widget.separator
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},
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create_process_header{with_action_column = enable_kill_button},
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process_rows,
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layout = wibox.layout.fixed.vertical,
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},
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margins = 8,
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widget = wibox.container.margin
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}
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end)
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end)
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return cpu_widget
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end
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return setmetatable(cpu_widget, { __call = function(_, ...)
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return worker(...)
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end })
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