conky-config/module/Memory.lua

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local Widget = require 'Widget'
local Arc = require 'Arc'
local Dial = require 'Dial'
local CriticalText = require 'CriticalText'
local Text = require 'Text'
local TextColumn = require 'TextColumn'
local Line = require 'Line'
local LabelPlot = require 'LabelPlot'
local Table = require 'Table'
local util = require 'util'
local schema = require 'default_patterns'
local _STRING_MATCH = string.match
local _MATH_RAD = math.rad
local _CAIRO_PATH_DESTROY = cairo_path_destroy
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local MODULE_Y = 712
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local MEM_TOTAL = tonumber(util.read_file('/proc/meminfo', 'MemTotal:%s+(%d+)')) --in kB
local DIAL_RADIUS = 32
local DIAL_THETA0 = 90
local DIAL_THETA1 = 360
local TABLE_CONKY = {}
for c = 1, 3 do TABLE_CONKY[c] = {} end
for r = 1, 5 do TABLE_CONKY[1][r] = '${top_mem name '..r..'}' end
for r = 1, 5 do TABLE_CONKY[2][r] = '${top_mem pid '..r..'}' end
for r = 1, 5 do TABLE_CONKY[3][r] = '${top_mem mem '..r..'}' end
--construction params
local DIAL_THICKNESS = 8
local DIAL_SPACING = 1
local TEXT_Y_OFFSET = 7
local TEXT_LEFT_X_OFFSET = 30
local TEXT_SPACING = 20
local SEPARATOR_SPACING = 15
local PLOT_SECTION_BREAK = 30
local PLOT_HEIGHT = 56
local TABLE_SECTION_BREAK = 20
local TABLE_HEIGHT = 114
local header = Widget.Header{
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x = G_DIMENSIONS_.RIGHT_X,
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y = MODULE_Y,
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width = G_DIMENSIONS_.SECTION_WIDTH,
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header = "MEMORY"
}
local HEADER_BOTTOM_Y = header.bottom_y
--don't nil these
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local DIAL_X = G_DIMENSIONS_.RIGHT_X + DIAL_RADIUS + DIAL_THICKNESS * 0.5
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local DIAL_Y = HEADER_BOTTOM_Y + DIAL_RADIUS + DIAL_THICKNESS * 0.5
local dial = Widget.Dial{
x = DIAL_X,
y = DIAL_Y,
radius = DIAL_RADIUS,
thickness = DIAL_THICKNESS,
critical_limit = '>0.8'
}
local cache_arc = Widget.Arc{
x = DIAL_X,
y = DIAL_Y,
radius = DIAL_RADIUS,
thickness = DIAL_THICKNESS,
arc_pattern = schema.purple_rounded
}
local total_used = Widget.CriticalText{
x = DIAL_X,
y = DIAL_Y,
x_align = 'center',
y_align = 'center',
append_end = '%'
}
local inner_ring = Widget.Arc{
x = DIAL_X,
y = DIAL_Y,
radius = DIAL_RADIUS - DIAL_THICKNESS / 2 - 2,
theta0 = 0,
theta1 = 360
}
local LINE_1_Y = HEADER_BOTTOM_Y + TEXT_Y_OFFSET
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local TEXT_LEFT_X = G_DIMENSIONS_.RIGHT_X + DIAL_RADIUS * 2 + TEXT_LEFT_X_OFFSET
local RIGHT_X = G_DIMENSIONS_.RIGHT_X + G_DIMENSIONS_.SECTION_WIDTH
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local swap= {
label = Widget.Text{
x = TEXT_LEFT_X,
y = LINE_1_Y,
spacing = TEXT_SPACING,
text = 'Swap Usage'
},
percent = Widget.CriticalText{
x = RIGHT_X,
y = LINE_1_Y,
x_align = 'right',
append_end = ' %',
},
}
local cache = {
labels = Widget.TextColumn{
x = TEXT_LEFT_X,
y = LINE_1_Y + TEXT_SPACING,
spacing = TEXT_SPACING,
'Page Cache',
'Buffers',
'Kernel Slab'
},
percents = Widget.TextColumn{
x = RIGHT_X,
y = LINE_1_Y + TEXT_SPACING,
x_align = 'right',
append_end = ' %',
text_color = schema.purple,
'<page_cache>',
'<buffers>',
'<kernel_slab>'
},
}
local PLOT_Y = PLOT_SECTION_BREAK + HEADER_BOTTOM_Y + DIAL_RADIUS * 2
local plot = Widget.LabelPlot{
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x = G_DIMENSIONS_.RIGHT_X,
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y = PLOT_Y,
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width = G_DIMENSIONS_.SECTION_WIDTH,
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height = PLOT_HEIGHT
}
local TABLE_Y = PLOT_Y + PLOT_HEIGHT + TABLE_SECTION_BREAK
local tbl = Widget.Table{
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x = G_DIMENSIONS_.RIGHT_X,
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y = TABLE_Y,
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width = G_DIMENSIONS_.SECTION_WIDTH,
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height = TABLE_HEIGHT,
'Name',
'PID',
'Mem (%)'
}
DIAL_THETA0 = _MATH_RAD(DIAL_THETA0)
DIAL_THETA1 = _MATH_RAD(DIAL_THETA1)
local __update = function(cr)
local MEM_TOTAL = MEM_TOTAL
local round = util.round
local precision_round_to_string = util.precision_round_to_string
local glob = util.read_file('/proc/meminfo') --kB
--see source for "free" for formulas and stuff ;)
local swap_free = _STRING_MATCH(glob, 'SwapFree:%s+(%d+)' )
local swap_total = _STRING_MATCH(glob, 'SwapTotal:%s+(%d+)')
local page_cache = _STRING_MATCH(glob, 'Cached:%s+(%d+)' )
local slab = _STRING_MATCH(glob, 'Slab:%s+(%d+)' )
local buffers = _STRING_MATCH(glob, 'Buffers:%s+(%d+)' )
local free = _STRING_MATCH(glob, 'MemFree:%s+(%d+)' )
local used_percent = util.round((MEM_TOTAL - free - page_cache - buffers - slab) / MEM_TOTAL, 2)
Dial.set(dial, used_percent)
CriticalText.set(total_used, cr, used_percent * 100)
local cache_theta = (DIAL_THETA0 - DIAL_THETA1) / MEM_TOTAL * free + DIAL_THETA1
_CAIRO_PATH_DESTROY(cache_arc.path)
cache_arc.path = Arc.create_path(DIAL_X, DIAL_Y, DIAL_RADIUS, dial.dial_angle, cache_theta)
CriticalText.set(swap.percent, cr, precision_round_to_string((swap_total - swap_free) / swap_total * 100))
local percents = cache.percents
TextColumn.set(percents, cr, 1, precision_round_to_string(page_cache / MEM_TOTAL * 100))
TextColumn.set(percents, cr, 2, precision_round_to_string(buffers / MEM_TOTAL * 100))
TextColumn.set(percents, cr, 3, precision_round_to_string(slab / MEM_TOTAL * 100))
LabelPlot.update(plot, used_percent)
for c = 1, 3 do
local column = TABLE_CONKY[c]
for r = 1, 5 do
Table.set(tbl, cr, c, r, util.conky(column[r], '(%S+)'))
end
end
end
Widget = nil
schema = nil
MODULE_Y = nil
DIAL_THICKNESS = nil
DIAL_SPACING = nil
TEXT_Y_OFFSET = nil
TEXT_LEFT_X_OFFSET = nil
TEXT_SPACING = nil
PLOT_SECTION_BREAK = nil
PLOT_HEIGHT = nil
TABLE_SECTION_BREAK = nil
TABLE_HEIGHT = nil
HEADER_BOTTOM_Y = nil
LINE_1_Y = nil
TEXT_LEFT_X = nil
RIGHT_X = nil
PLOT_Y = nil
TABLE_Y = nil
local draw = function(cr, current_interface)
__update(cr)
if current_interface == 0 then
Text.draw(header.text, cr)
Line.draw(header.underline, cr)
Dial.draw(dial, cr)
Arc.draw(cache_arc, cr)
Arc.draw(inner_ring, cr)
CriticalText.draw(total_used, cr)
Text.draw(swap.label, cr)
CriticalText.draw(swap.percent, cr)
TextColumn.draw(cache.labels, cr)
TextColumn.draw(cache.percents, cr)
LabelPlot.draw(plot, cr)
Table.draw(tbl, cr)
end
end
return draw