/home/billy/.conky/clock_rings.lua: ligne2: Erreur de syntaxe près du symbole inattendu « ( »
/home/billy/.conky/clock_rings.lua: ligne2: `Clock Rings by Linux Mint (2011) reEdited by despot77 then by DooM2a'
/home/billy/.conky/clock_rings.lua: ligne1: --[[ : commande introuvable
/home/billy/.conky/clock_rings.lua: ligne2: Erreur de syntaxe près du symbole inattendu « ( »
/home/billy/.conky/clock_rings.lua: ligne2: `Clock Rings by Linux Mint (2011) reEdited by despot77 then by DooM2a'
/home/billy/.conky/clock_rings.lua: ligne1: --[[ : commande introuvable
/home/billy/.conky/clock_rings.lua: ligne2: Erreur de syntaxe près du symbole inattendu « ( »
/home/billy/.conky/clock_rings.lua: ligne2: `Clock Rings by Linux Mint (2011) reEdited by despot77 then by DooM2a'
QDBusObjectPath: invalid path ""
>>> 0x2517770 created Job Job 
>>> 0x2518490 created Job Job 

--[[
Clock Rings by Linux Mint (2011) reEdited by despot77 then by DooM2a

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 2011mint -- reEdit despot77 (18.02.2011)
]]

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=0x2D7DB3,
        -- "fg_alpha" is the alpha value of the indicator part of the ring.
        fg_alpha=0.5,
        -- "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=90, 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 than start_angle.
        end_angle=360
    },
    {
        name='time',
        arg='%M.%S',
        max=60,
        bg_colour=0xffffff,
        bg_alpha=0.1,
        fg_colour=0x2D7DB3,
        fg_alpha=0.6,
        x=90, y=170,
    sectors=4,
    inverse_arc=false,
        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=0x2D7DB3,
        fg_alpha=0.7,
        x=90, y=170,
        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=0x2D7DB3,
        fg_alpha=0.8,
        x=90, y=170,
        radius=70,
        thickness=5,
        start_angle=45,
        end_angle=225
    },
    {
        name='time',
        arg='%m',
        max=12,
        bg_colour=0xffffff,
        bg_alpha=0.1,
        fg_colour=0x2D7DB3,
        fg_alpha=1,
        x=90, y=170,
        radius=76,
        thickness=5,
        start_angle=-135,
        end_angle=45
    },
    {
        name='cpu',
        arg='cpu0',
        max=90,
        bg_colour=0xffffff,
        bg_alpha=0.2,
        fg_colour=0x2D7DB3,
        fg_alpha=1,
        x=157, y=305,
        radius=48,
        thickness=6,
        start_angle=-135,
        end_angle=135
    },

    {
        name='cpu',
        arg='cpu1',
        max=90,
        bg_colour=0xffffff,
        bg_alpha=0.1,
        fg_colour=0x844798,
        fg_alpha=0.8,
        x=157, y=305,
        radius=40,
        thickness=6,
        start_angle=-45,
        end_angle=90
    },

 {
        name='cpu',
        arg='cpu2',
        max=90,
        bg_colour=0xffffff,
        bg_alpha=0.1,
        fg_colour=0xCB0C29,
        fg_alpha=0.8,
        x=157, y=305,
        radius=33,
        thickness=6,
        start_angle=45,
        end_angle=180
    },

 {
        name='cpu',
        arg='cpu3',
        max=90,
        bg_colour=0xffffff,
        bg_alpha=0.1,
        fg_colour=0x49A835,
        fg_alpha=0.8,
        x=157, y=305,
        radius=40,
        thickness=6,
        start_angle=135,
        end_angle=270
    },

 {
        name='cpu',
        arg='cpu4',
        max=90,
        bg_colour=0xffffff,
        bg_alpha=0.1,
        fg_colour=0xFF6600,
        fg_alpha=0.8,
        x=157, y=305,
        radius=33,
        thickness=6,
        start_angle=225,
        end_angle=360
    },

    {
        name='memperc',
        arg='',
        max=90,
        bg_colour=0xffffff,
        bg_alpha=0.2,
        fg_colour=0x2D7DB3,
        fg_alpha=0.8,
        x=50, y=340,
        radius=25,
        thickness=5,
        start_angle=-90,
        end_angle=180
    },
    {
        name='swapperc',
        arg='',
        max=90,
        bg_colour=0xffffff,
        bg_alpha=0.2,
        fg_colour=0x2D7DB3,
        fg_alpha=0.8,
        x=75, y=400,
        radius=25,
        thickness=5,
        start_angle=-90,
        end_angle=180
    },
    {
        name='fs_used_perc',
        arg='/',
        max=90,
        bg_colour=0xffffff,
        bg_alpha=0.2,
        fg_colour=0x2D7DB3,
        fg_alpha=0.8,
        x=100, y=460,
        radius=25,
        thickness=5,
        start_angle=-90,
        end_angle=180
    },
        {
        name='downspeedf',
        arg='p128p1',
        max=550,
        bg_colour=0xffffff,
        bg_alpha=0.2,
        fg_colour=0x339900,
        fg_alpha=0.8,
        x=140, y=520,
        radius=27,
        thickness=7,
        start_angle=-180,
        end_angle=90
    },
        {
        name='upspeedf',
        arg='p128p1',
        max=90,
        bg_colour=0xffffff,
        bg_alpha=0.2,
        fg_colour=0xff6600,
        fg_alpha=0.8,
        x=140, y=520,
        radius=20,
        thickness=5,
        start_angle=-180,
        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=90
clock_y=170

show_seconds=false

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 - remove -- symbols to display hours's line
    
    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 - remove -- symbols to display minute's line
    
    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)
    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']
        
        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