Here’s another quick script in Lua (with Cairo bindings) for Conky 1.7.2+. It takes any Conky variable that expresses a percentage, and displays it as a ring. Some screenies for your perusal:

Rings Closeup
Rings Screenshot 1

Rings Screenshot 2
Rings v1.2

All of these screenshots were created using the same rings.lua script, with varying ring settings. The last of these shots was made using the following script (rings-v1.2.1.lua.tar.gz):

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

--[[
Ring Meters by londonali1010 (2009)
 
This script draws percentage meters as rings. It is fully customisable; all options are described in the script.
 
IMPORTANT: if you are using the 'cpu' function, it will cause a segmentation fault if it tries to draw a ring straight away. The if statement on line 145 uses a delay to make sure that this doesn't happen. It calculates the length of the delay by the number of updates since Conky started. Generally, a value of 5s is long enough, so if you update Conky every 1s, use update_num > 5 in that if statement (the default). If you only update Conky every 2s, you should change it to update_num > 3; conversely if you update Conky every 0.5s, you should use update_num > 10. ALSO, if you change your Conky, is it best to use "killall conky; conky" to update it, otherwise the update_num will not be reset and you will get an error.
 
To call this script in Conky, use the following (assuming that you save this script to ~/scripts/rings.lua):
	lua_load ~/scripts/rings-v1.2.1.lua
	lua_draw_hook_pre ring_stats
 
Changelog:
+ v1.2.1 -- Fixed minor bug that caused script to crash if conky_parse() returns a nil value (20.10.2009)
+ v1.2 -- Added option for the ending angle of the rings (07.10.2009)
+ v1.1 -- Added options for the starting angle of the rings, and added the "max" variable, to allow for variables that output a numerical value rather than a percentage (29.09.2009)
+ v1.0 -- Original release (28.09.2009)
]]
 
settings_table = {
	{
		-- Edit this table to customise your rings.
		-- You can create more rings simply by adding more elements to settings_table.
		-- "name" is the type of stat to display; you can choose from 'cpu', 'memperc', 'fs_used_perc', 'battery_used_perc'.
		name='time',
		-- "arg" is the argument to the stat type, e.g. if in Conky you would write ${cpu cpu0}, 'cpu0' would be the argument. If you would not use an argument in the Conky variable, use ''.
		arg='%I.%M',
		-- "max" is the maximum value of the ring. If the Conky variable outputs a percentage, use 100.
		max=12,
		-- "bg_colour" is the colour of the base ring.
		bg_colour=0xffffff,
		-- "bg_alpha" is the alpha value of the base ring.
		bg_alpha=0.1,
		-- "fg_colour" is the colour of the indicator part of the ring.
		fg_colour=0xffffff,
		-- "fg_alpha" is the alpha value of the indicator part of the ring.
		fg_alpha=0.2,
		-- "x" and "y" are the x and y coordinates of the centre of the ring, relative to the top left corner of the Conky window.
		x=165, y=170,
		-- "radius" is the radius of the ring.
		radius=50,
		-- "thickness" is the thickness of the ring, centred around the radius.
		thickness=5,
		-- "start_angle" is the starting angle of the ring, in degrees, clockwise from top. Value can be either positive or negative.
		start_angle=0,
		-- "end_angle" is the ending angle of the ring, in degrees, clockwise from top. Value can be either positive or negative, but must be larger (e.g. more clockwise) than start_angle.
		end_angle=360
	},
	{
		name='time',
		arg='%M.%S',
		max=60,
		bg_colour=0xffffff,
		bg_alpha=0.1,
		fg_colour=0xffffff,
		fg_alpha=0.4,
		x=165, y=170,
		radius=56,
		thickness=5,
		start_angle=0,
		end_angle=360
	},
	{
		name='time',
		arg='%S',
		max=60,
		bg_colour=0xffffff,
		bg_alpha=0.1,
		fg_colour=0xffffff,
		fg_alpha=0.6,
		x=165, y=170,
		radius=62,
		thickness=5,
		start_angle=0,
		end_angle=360
	},
	{
		name='cpu',
		arg='cpu1',
		max=100,
		bg_colour=0xffffff,
		bg_alpha=0,
		fg_colour=0xffffff,
		fg_alpha=0.1,
		x=165, y=170,
		radius=70,
		thickness=5,
		start_angle=60,
		end_angle=120
	},
	{
		name='cpu',
		arg='cpu2',
		max=100,
		bg_colour=0xffffff,
		bg_alpha=0,
		fg_colour=0xffffff,
		fg_alpha=0.1,
		x=165, y=170,
		radius=76,
		thickness=5,
		start_angle=60,
		end_angle=120
	},
	{
		name='cpu',
		arg='cpu0',
		max=100,
		bg_colour=0xffffff,
		bg_alpha=0.1,
		fg_colour=0xffffff,
		fg_alpha=0.4,
		x=165, y=170,
		radius=84.5,
		thickness=8,
		start_angle=60,
		end_angle=120
	},
	{
		name='battery_percent',
		arg='BAT1',
		max=100,
		bg_colour=0xffffff,
		bg_alpha=0.1,
		fg_colour=0xffffff,
		fg_alpha=0.6,
		x=165, y=170,
		radius=72,
		thickness=11,
		start_angle=122,
		end_angle=210
	},
	{
		name='memperc',
		arg='',
		max=100,
		bg_colour=0xffffff,
		bg_alpha=0.1,
		fg_colour=0xffffff,
		fg_alpha=0.8,
		x=165, y=170,
		radius=83.5,
		thickness=8,
		start_angle=122,
		end_angle=210
	},
	{
		name='time',
		arg='%d',
		max=31,
		bg_colour=0xffffff,
		bg_alpha=0.1,
		fg_colour=0xffffff,
		fg_alpha=0.8,
		x=165, y=170,
		radius=70,
		thickness=5,
		start_angle=212,
		end_angle=360
	},
	{
		name='time',
		arg='%m',
		max=12,
		bg_colour=0xffffff,
		bg_alpha=0.1,
		fg_colour=0xffffff,
		fg_alpha=0.8,
		x=165, y=170,
		radius=76,
		thickness=5,
		start_angle=212,
		end_angle=360
	},
	{
		name='fs_used_perc',
		arg='/',
		max=150,
		bg_colour=0xffffff,
		bg_alpha=0.2,
		fg_colour=0xffffff,
		fg_alpha=0.3,
		x=165, y=170,
		radius=108.5,
		thickness=3,
		start_angle=-120,
		end_angle=240
	},
	{
		name='fs_used_perc',
		arg='/',
		max=100,
		bg_colour=0xffffff,
		bg_alpha=0.2,
		fg_colour=0xffffff,
		fg_alpha=0.3,
		x=165, y=170,
		radius=135,
		thickness=50,
		start_angle=-120,
		end_angle=120
	},
}
 
require 'cairo'
 
function rgb_to_r_g_b(colour,alpha)
	return ((colour / 0x10000) % 0x100) / 255., ((colour / 0x100) % 0x100) / 255., (colour % 0x100) / 255., alpha
end
 
function draw_ring(cr,t,pt)
	local w,h=conky_window.width,conky_window.height
 
	local xc,yc,ring_r,ring_w,sa,ea=pt['x'],pt['y'],pt['radius'],pt['thickness'],pt['start_angle'],pt['end_angle']
	local bgc, bga, fgc, fga=pt['bg_colour'], pt['bg_alpha'], pt['fg_colour'], pt['fg_alpha']
 
	local angle_0=sa*(2*math.pi/360)-math.pi/2
	local angle_f=ea*(2*math.pi/360)-math.pi/2
	local t_arc=t*(angle_f-angle_0)
 
	-- Draw background ring
 
	cairo_arc(cr,xc,yc,ring_r,angle_0,angle_f)
	cairo_set_source_rgba(cr,rgb_to_r_g_b(bgc,bga))
	cairo_set_line_width(cr,ring_w)
	cairo_stroke(cr)
 
	-- Draw indicator ring
 
	cairo_arc(cr,xc,yc,ring_r,angle_0,angle_0+t_arc)
	cairo_set_source_rgba(cr,rgb_to_r_g_b(fgc,fga))
	cairo_stroke(cr)		
end
 
function conky_ring_stats()
	local function setup_rings(cr,pt)
		local str=''
		local value=0
 
		str=string.format('${%s %s}',pt['name'],pt['arg'])
		str=conky_parse(str)
 
		value=tonumber(str)
		if value == nil then value = 0 end
		pct=value/pt['max']
 
		draw_ring(cr,pct,pt)
	end
 
	if conky_window==nil then return end
	local cs=cairo_xlib_surface_create(conky_window.display,conky_window.drawable,conky_window.visual, conky_window.width,conky_window.height)
 
	local cr=cairo_create(cs)	
 
	local updates=conky_parse('${updates}')
	update_num=tonumber(updates)
 
	if update_num>5 then
		for i in pairs(settings_table) do
			setup_rings(cr,settings_table[i])
		end
	end
end

And the .conkyrc to call it:

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

# -- Conky settings -- #
background no
update_interval 1
 
cpu_avg_samples 2
net_avg_samples 2
 
override_utf8_locale yes
 
double_buffer yes
no_buffers yes
 
text_buffer_size 2048
imlib_cache_size 0
 
# -- Window specifications -- #
 
own_window yes
own_window_type desktop
own_window_transparent yes
own_window_hints undecorate,sticky,skip_taskbar,skip_pager,below
 
border_inner_margin 0
border_outer_margin 0
 
minimum_size 1020 600
maximum_width 1000
 
alignment tm
gap_x 10
gap_y 0
 
# -- Graphics settings -- #
draw_shades no
draw_outline no
draw_borders no
draw_graph_borders no
 
# -- Text settings -- #
use_xft yes
xftfont Santana:size=24
xftalpha 0.8
 
uppercase no
 
default_color FFFFFF
 
# -- Lua Load -- #
lua_load ~/scripts/rings-v1.2.1.lua
lua_draw_hook_pre ring_stats
 
TEXT
${voffset 35}${font Santana:size=50}${alignr}${time %H.%M}${font}
${goto 160}${hr 2}
${goto 250}${time %A, %d %B %Y}

If you hadn’t yet gleaned from the blurb at the top of the script, the things you can customise are:

  • The number of rings — this is changed by just adding or removing elements of the settings_table
  • The size (radius and ring thickness) and placement of each ring
  • The foreground and background colour and transparency (alpha) for each ring
  • The maximum value for each ring
  • The starting and ending angle for each ring

A notes on using the script:

  • PLEASE READ the note about segmentation faults in the top of the script. It drove me nuts until I figured out what was happening!

The wallpaper used in the top 3 screenshots is a stock one that ships with Crunchbang 9.04. The paper swans wallpaper is from fiftyfootshadows.net.

UPDATE: This script is now available as a widget code block for my Conky Widgets script. You can download it here: ring_wb.txt.tar.gz.

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

--[[ RING WIDGET ]]
--[[ Options (name, arg, max, bg_colour, bg_alpha, xc, yc, radius, thickness, start_angle, end_angle):
	"name" is the type of stat to display; you can choose from 'cpu', 'memperc', 'fs_used_perc', 'battery_used_perc'.
	"arg" is the argument to the stat type, e.g. if in Conky you would write ${cpu cpu0}, 'cpu0' would be the argument. If you would not use an argument in the Conky variable, use ''.
	"max" is the maximum value of the ring. If the Conky variable outputs a percentage, use 100.
	"bg_colour" is the colour of the base ring.
	"bg_alpha" is the alpha value of the base ring.
	"fg_colour" is the colour of the indicator part of the ring.
	"fg_alpha" is the alpha value of the indicator part of the ring.
	"x" and "y" are the x and y coordinates of the centre of the ring, relative to the top left corner of the Conky window.
	"radius" is the radius of the ring.
	"thickness" is the thickness of the ring, centred around the radius.
	"start_angle" is the starting angle of the ring, in degrees, clockwise from top. Value can be either positive or negative.
	"end_angle" is the ending angle of the ring, in degrees, clockwise from top. Value can be either positive or negative, but must be larger (e.g. more clockwise) than start_angle. ]]
 
function ring(cr, name, arg, max, bgc, bga, fgc, fga, xc, yc, r, t, sa, ea)
	local function rgb_to_r_g_b(colour,alpha)
		return ((colour / 0x10000) % 0x100) / 255., ((colour / 0x100) % 0x100) / 255., (colour % 0x100) / 255., alpha
	end
 
	local function draw_ring(pct)
		local angle_0=sa*(2*math.pi/360)-math.pi/2
		local angle_f=ea*(2*math.pi/360)-math.pi/2
		local pct_arc=pct*(angle_f-angle_0)
 
		-- Draw background ring
 
		cairo_arc(cr,xc,yc,r,angle_0,angle_f)
		cairo_set_source_rgba(cr,rgb_to_r_g_b(bgc,bga))
		cairo_set_line_width(cr,t)
		cairo_stroke(cr)
 
		-- Draw indicator ring
 
		cairo_arc(cr,xc,yc,r,angle_0,angle_0+pct_arc)
		cairo_set_source_rgba(cr,rgb_to_r_g_b(fgc,fga))
		cairo_stroke(cr)
	end
 
	local function setup_ring()
		local str = ''
		local value = 0
 
		str = string.format('${%s %s}', name, arg)
		str = conky_parse(str)
 
		value = tonumber(str)
		if value == nil then value = 0 end
		pct = value/max
 
		draw_ring(pct)
	end	
 
	local updates=conky_parse('${updates}')
	update_num=tonumber(updates)
 
	if update_num>5 then setup_ring() end
end
 
--[[ END RING WIDGET ]]

Happy Conkying!

Author: londonali1010

Distro: Crunchbang 9.04, Openbox

Conky Version: 1.7.2-all

 
Go To Top »