summaryrefslogtreecommitdiff
path: root/cpu-widget/cpu-widget.lua
blob: 54547aeb3db49243c71e915f7484bb284118c439 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
-------------------------------------------------
-- 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 HOME_DIR = os.getenv("HOME")
local WIDGET_DIR = HOME_DIR .. '/.config/awesome/awesome-wm-widgets/cpu-widget'

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 = '<b>PID</b>'},
        create_textbox{markup = '<b>Name</b>'},
        {
            create_textbox{markup = '<b>%CPU</b>'},
            create_textbox{markup = '<b>%MEM</b>'},
            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 = WIDGET_DIR .. '/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([[sh -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 })