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