--[[
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='memperc',
arg='',
-- 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_colour=0xff0000,
-- "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=0xff0000,
--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='fs_used_perc',
arg='/',
max=100,
bg_colour=0xffffff,
--bg_alpha=0.2,
bg_alpha=0.05,
fg_colour=0xB3895A,
fg_alpha=0.5,
x=165, y=170,
radius=35,
thickness=7.5,
start_angle=-270,
end_angle=0
},
{
name='swapperc',
arg='',
max=100,
bg_colour=0xffffff,
bg_alpha=0.1,
fg_colour=0x65B35A,
fg_alpha=0.5,
x=165, y=170,
radius=49,
thickness=10,
start_angle=-270,
end_angle=0
},
{
name='memperc',
arg='',
max=100,
bg_colour=0xffffff,
--bg_alpha=0.2,
bg_alpha=0.2,
fg_colour=0x5A7EB3,
fg_alpha=0.5,
x=165, y=170,
radius=67,
thickness=15,
start_angle=-270,
end_angle=0
},
{
name='cpu',
arg='cpu0',
max=100,
bg_colour=0xffffff,
--bg_alpha=0.2,
bg_alpha=0.3,
fg_colour=0xB35A60,
fg_alpha=0.5,
x=165, y=170,
radius=92,
thickness=25,
start_angle=-270,
end_angle=0
},
{
name='battery_percent',
arg='BAT0',
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=-270,
end_angle=0
},
}
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'] or 0
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)
local cr_horiz=cairo_create(cs)
local function accent_bar(cr,width,sx,sy,fx,fy,color,alpha)
cairo_set_line_width (cr, width);
cairo_move_to (cr, sx, sy);
cairo_line_to (cr, fx, fy);
cairo_set_source_rgba(cr,rgb_to_r_g_b(color,alpha))
cairo_stroke(cr)
end
--draw a horizontal ring that leads into fs_used_perc
accent_bar(cr_horiz, 7.5, 1100.0, 135.0, 745.0, 135.0, 0xffffff, 0.05)
--draw a horizontal ring that leads into swapperc
accent_bar(cr_horiz, 10.0, 1100.0, 121.0, 165.0, 121.0, 0xffffff, 0.1)
--draw a horizontal ring that leads into memperc
accent_bar(cr_horiz, 15.0, 1100.0, 103.0, 362.0, 103.0, 0xffffff, 0.2)
--draw thin bar under memperc
accent_bar(cr_horiz, 2.0, 362.0, 109.5, 165.0, 109.5, 0xffffff, 0.2)
--draw a horizontal ring that leads into cpu
accent_bar(cr_horiz, 25.0, 1100.0, 78.0, 362.0, 78.0, 0xffffff, 0.3)
--draw a horizontal ring that leads into batt
accent_bar(cr_horiz, 50.0, 1100.0, 35.0, 362.0, 35.0, 0xffffff, 0.4)
--draw 2 thin bars on batt to separate the proc headings to the procs
accent_bar(cr_horiz, 2.0, 362.0, 11.0, 165.0, 11.0, 0xffffff, 0.4)
accent_bar(cr_horiz, 2.0, 362.0, 30.0, 165.0, 30.0, 0xffffff, 0.4)
local xc, yc, ring_r, sa, ea = 165, 170, 13, -270, 0
local angle_0=sa*(2*math.pi/360)-math.pi/2
local angle_f=ea*(2*math.pi/360)-math.pi/2
cairo_arc(cr_horiz,xc,yc,ring_r,angle_0,angle_f)
cairo_set_source_rgba(cr_horiz,rgb_to_r_g_b(0xffffff,0.05))
cairo_set_line_width(cr_horiz,2*ring_r)
cairo_stroke(cr_horiz)
if update_num>5 then
for i in pairs(settings_table) do
setup_rings(cr,settings_table[i])
end
end
end
http://i.imgur.com/uAflj.jpg
http://i.imgur.com/Obp55.jpg 
http://i.imgur.com/1wgo1.jpg
"Somente seres humanos excepcionais e irrepreensíveis suscitam ideias generosas e ações elevadas. O conhecimento é limitado. A imaginação envolve ao mundo."
