--[[
Clock Rings by londonali1010 (2009)
This script draws percentage meters as rings, and also draws clock hands if you want! It is fully customisable; all options are described in the script. This script is based off a combination of my clock.lua script and my rings.lua 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 near the end of the script 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/clock_rings-v1.1.1.lua
lua_draw_hook_pre clock_rings
Changelog:
+ v1.1.1 -- Fixed minor bug that caused the script to crash if conky_parse() returns a nil value (20.10.2009)
+ v1.1 -- Added colour option for clock hands (07.10.2009)
+ v1.0 -- Original release (30.09.2009)
]]
settings_table = {
--[[Anneau des heures
{
name='time',
arg='%I.%M',
max=12,
bg_colour=0xffffff,
bg_alpha=0.1,
fg_colour=0xffffff,
fg_alpha=0.2,
x=60, y=60,
radius=40,
thickness=5,
start_angle=0,
end_angle=360
},
--Anneau des minutes
{
name='time',
arg='%M.%S',
max=60,
bg_colour=0xffffff,
bg_alpha=0.1,
fg_colour=0xffffff,
fg_alpha=0.4,
x=60, y=60,
radius=46,
thickness=5,
start_angle=0,
end_angle=360
},
--Anneau des secondes
{
name='time',
arg='%S',
max=60,
bg_colour=0x242424,
bg_alpha=0.1,
fg_colour=0x242424,
fg_alpha=0.1,
x=188, y=188,
radius=150,
thickness=2,
start_angle=0,
end_angle=360
},]]
}
--Use these settings to define the origin and extent of your clock.
clock_r=180
--Coordinates of the centre of the clock, in pixels, from the top left of the Conky window.
clock_x=210
clock_y=200
--Colour & alpha of the clock hands
clock_colour=0x242424
clock_alpha=0.9
--Show the seconds hand ?
show_seconds=true
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 draw_clock_hands(cr,xc,yc)
local secs,mins,hours,secs_arc,mins_arc,hours_arc
local xh,yh,xm,ym,xs,ys
secs=os.date("%S")
mins=os.date("%M")
hours=os.date("%I")
secs_arc=(2*math.pi/60)*secs
mins_arc=(2*math.pi/60)*mins+secs_arc/60
hours_arc=(2*math.pi/12)*hours+mins_arc/12
--Draw hour hand
xh=xc+0.7*clock_r*math.sin(hours_arc)
yh=yc-0.6*clock_r*math.cos(hours_arc)
cairo_move_to(cr,xc,yc)
cairo_line_to(cr,xh,yh)
--
cairo_set_line_cap(cr,CAIRO_LINE_CAP_ROUND)
cairo_set_line_width(cr,3)
cairo_set_source_rgba(cr,rgb_to_r_g_b(clock_colour,clock_alpha))
cairo_stroke(cr)
--Draw minute hand
xm=xc+0.8*clock_r*math.sin(mins_arc)
ym=yc-0.8*clock_r*math.cos(mins_arc)
cairo_move_to(cr,xc,yc)
cairo_line_to(cr,xm,ym)
--
cairo_set_line_width(cr,2)
cairo_stroke(cr)
-- Draw seconds hand
if show_seconds then
xs=xc+1.0*clock_r*math.sin(secs_arc)
ys=yc-1.0*clock_r*math.cos(secs_arc)
cairo_move_to(cr,xc,yc)
cairo_line_to(cr,xs,ys)
--
cairo_set_line_width(cr,1)
cairo_stroke(cr)
end
end
function conky_clock_rings()
local function setup_rings(cr,pt)
local str=''
local value=0
str=string.format('${%s %s}',pt['name'],pt['arg'])
str=conky_parse(str)
value=tonumber(str)
if value == nil then value = 0 end
--Les ajouts suivants permettent de corriger le retard prit par les anneaux
--Ajout wlourf : conversion des minutes en centièmes d'heures
if pt['arg'] == "%I.%M" then
value=os.date("%I")+os.date("%M")/60
if value>12 then value=value-12 end
end
--Ajout Fenouille84 : conversion des secondes en centièmes de minutes
if pt['arg'] == "%M.%S" then
value=os.date("%M")+os.date("%S")/60
end
--Fin ajout
pct=value/pt['max']
draw_ring(cr,pct,pt)
end
--Check that Conky has been running for at least 5s
if conky_window==nil then return end
local cs=cairo_xlib_surface_create(conky_window.display,conky_window.drawable,conky_window.visual, conky_window.width,conky_window.height)
local cr=cairo_create(cs)
local updates=conky_parse('${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
draw_clock_hands(cr,clock_x,clock_y)
end
http://i.imgur.com/X0NUo.jpg
http://i.imgur.com/KgRCt.jpg 
http://i.imgur.com/qTVMT.png
"Somente seres humanos excepcionais e irrepreensíveis suscitam ideias generosas e ações elevadas. O conhecimento é limitado. A imaginação envolve ao mundo."
