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December 4, 2012 06:01
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--[[ | |
Clock Rings by Linux Mint (2011) reEdited by despot77 | |
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 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/clock_rings.lua | |
lua_draw_hook_pre clock_rings | |
Changelog: | |
+ v1.0 -- Original release (30.09.2009) | |
v1.1p -- Jpope edit londonali1010 (05.10.2009) | |
*v Mint-lua -- reEdit despot77 (18.02.2011) | |
modded by tom: | |
changed to just time rings | |
]] | |
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=0x0066FF, | |
-- "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=220, y=120, | |
-- "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 than start_angle. | |
end_angle=360 | |
}, | |
{ | |
name='time', | |
arg='%M.%S', | |
max=60, | |
bg_colour=0xffffff, | |
bg_alpha=0.1, | |
fg_colour=0x0066FF, | |
fg_alpha=0.4, | |
x=220, y=120, | |
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=0x0066FF, | |
fg_alpha=0.6, | |
x=220, y=120, | |
radius=62, | |
thickness=5, | |
start_angle=0, | |
end_angle=360 | |
}, | |
{ | |
name='time', | |
arg='%d', | |
max=31, | |
bg_colour=0xffffff, | |
bg_alpha=0.1, | |
fg_colour=0x0066FF, | |
fg_alpha=0.8, | |
x=220, y=120, | |
radius=70, | |
thickness=5, | |
start_angle=-90, | |
end_angle=90 | |
}, | |
{ | |
name='time', | |
arg='%m', | |
max=12, | |
bg_colour=0xffffff, | |
bg_alpha=0.1, | |
fg_colour=0x0066FF, | |
fg_alpha=1, | |
x=220, y=120, | |
radius=76, | |
thickness=5, | |
start_angle=-90, | |
end_angle=90 | |
}, | |
} | |
-- Use these settings to define the origin and extent of your clock. | |
clock_r=65 | |
-- "clock_x" and "clock_y" are the coordinates of the centre of the clock, in pixels, from the top left of the Conky window. | |
clock_x=220 | |
clock_y=120 | |
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-0.7*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,5) | |
cairo_set_source_rgba(cr,1.0,1.0,1.0,1.0) | |
cairo_stroke(cr) | |
-- Draw minute hand | |
xm=xc+clock_r*math.sin(mins_arc) | |
ym=yc-clock_r*math.cos(mins_arc) | |
cairo_move_to(cr,xc,yc) | |
cairo_line_to(cr,xm,ym) | |
cairo_set_line_width(cr,3) | |
cairo_stroke(cr) | |
-- Draw seconds hand | |
if show_seconds then | |
xs=xc+clock_r*math.sin(secs_arc) | |
ys=yc-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) | |
cairo_destroy(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) | |
pct=value/pt['max'] | |
-- Maximum should only be 1.000 (100%) | |
if (pct > 1) then | |
pct = 1 | |
end | |
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) | |
cairo_surface_destroy(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 |
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