Conky and lua scripts

**jdos1** · 12-27-2012

Hi, I've recently decided to refurbish my conky and I think I'm a little in over my head.

I downloaded a conky and a lua script and I can't get the lua part to show up. To be honest, I don't even know what to look for.

Here's my conky:

Code:

# 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

temperature_unit fahrenheit

# Window specifications #
own_window yes
own_window_type override
own_window_transparent #000000
own_window_transparent yes
own_window_hints undecorate,sticky,skip_taskbar,skip_pager,below

border_inner_margin 0
border_outer_margin 5

minimum_size 250 300
maximum_width 250

alignment tr
gap_x 10
gap_y 0

# Graphics settings #
draw_shades no
draw_outline no
draw_borders no
draw_graph_borders yes

# Text settings #
use_xft yes
xftfont caviar dreams:size=8
xftalpha 0.5

uppercase no

temperature_unit celsius

default_color FFFFFF

# Lua Load  #
lua_load ~/.openbox/conky/conky_blue/clock_rings.lua
lua_draw_hook_pre clock_rings

TEXT
#----------------------------------------------------------------------------------------------------------------------------------------
#					         Time and date 
#----------------------------------------------------------------------------------------------------------------------------------------
${voffset 7}${font Radio Space:size=16}${color 0ABFFF}${time %A}${font}$color${font Radio Space:size=38}${goto 167}${voffset -8} ${time %e}${font}
${font Radio Space:size=18}${voffset -30}${time %b}${font}${voffset -3} ${font Radio Space:size=20}${time %Y}${font}${color 0ABFFF} ${hr 1}
#----------------------------------------------------------------------------------------------------------------------------------------
#					         Battery Circle 
#----------------------------------------------------------------------------------------------------------------------------------------
${color FFFFFF}${goto 209}${voffset 34}${battery_percent}%
${color 0ABFFF}${goto 202}${voffset 25}Battery
#----------------------------------------------------------------------------------------------------------------------------------------
#					           CPU usage 
#----------------------------------------------------------------------------------------------------------------------------------------
${color #0ABFFF}${hr 1}$color
${color #0ABFFF}${voffset 6}Temp: $color ${acpitemp}°C
${color #0ABFFF}${voffset 6}Processes:$color $processes	
${color #0ABFFF}${voffset 6}Running: $color  $running_processes${goto 116}${voffset 8}${cpu cpu0}% ${color 0ABFFF}${goto 116}${voffset 13}CPU1$color${goto 191}${voffset -12}${cpu cpu1}% ${color 0ABFFF}${goto 191}${voffset 12}CPU2$color
${color #0ABFFF}${voffset -12}FREQ:$color ${freq}MHz
${color #0ABFFF}${voffset 6}Load:$color ${loadavg}
#----------------------------------------------------------------------------------------------------------------------------------------
#						Network
#----------------------------------------------------------------------------------------------------------------------------------------
${color 0ABFFF}${voffset 2}${hr 1}
${color 0ABFFF}essid: $color$alignr${wireless_essid wlan0}
${color 0ABFFF}wlan0: $color$alignr${addr wlan0}
${color 0ABFFF}Current: $color${alignr}${execi 10 /sbin/iwconfig wlan0|grep Rate|cut -d"M" -f1|cut -b20-24} Mbits/sec
${color 0ABFFF}eth0: $color$alignr${addr eth0}

${color #0ABFFF}Down: $color${downspeed wlan0} k/s ${alignr}${color #0ABFFF}Up:$color ${upspeed wlan0} k/s
${downspeedgraph wlan0 30,120 000000 0ABFFF} ${alignr}${upspeedgraph wlan0 30,120 000000 0ABFFF}$color
${color #0ABFFF}Total:$color ${totaldown wlan0} ${alignr}${color #0ABFFF}Total:$color ${totalup wlan0}
#----------------------------------------------------------------------------------------------------------------------------------------
#					DISK/RAM/SWAP usage
#----------------------------------------------------------------------------------------------------------------------------------------
${color 0ABFFF}${voffset 2}${hr 1}
${color FFFFFF}${goto 7}${voffset 39}${fs_used_perc /}%
${color 0ABFFF}${goto 7}DISK
${color FFFFFF}${goto 102}${voffset -27}${memperc}%
${color 0ABFFF}${goto 102}RAM
#----------------------------------------------------------------------------------------------------------------------------------------
#					   Running processes
#----------------------------------------------------------------------------------------------------------------------------------------
${color 0ABFFF}${voffset 2} ${hr 1}
${color #0ABFFF}${voffset 5}NAME${goto 122}PID${goto 163}CPU%${goto 210}MEM%$color${voffset 5}
${top name 1}${goto 115}${top pid 1}${goto 160}${top cpu 1}${goto 205}${top mem 1}
${top name 2}${goto 115}${top pid 2}${goto 160}${top cpu 2}${goto 205}${top mem 2}
${top name 3}${goto 115}${top pid 3}${goto 160}${top cpu 3}${goto 205}${top mem 3}
${top name 4}${goto 115}${top pid 5}${goto 160}${top cpu 5}${goto 205}${top mem 5}
#----------------------------------------------------------------------------------------------------------------------------------------
#					     Computer info
#----------------------------------------------------------------------------------------------------------------------------------------
${color 0ABFFF}${voffset 2}${hr 1}${voffset 5}
${color 0ABFFF}Hostname:$color${alignr}${nodename}
${color 0ABFFF}OS:$color${alignr}${pre_exec cat /etc/issue.net} $machine
${color 0ABFFF}Kernel:$color${alignr}${kernel}$color
${color 0ABFFF}${font Radio Space:size=20}ARCH${color FFFFFF}LINUX
${color 0ABFFF}${voffset -10}${hr 1}
#----------------------------------------------------------------------------------------------------------------------------------------

Here's the lua script:

Code:

-[[
# Clock Rings by Linux Mint (2012) reEdited by Altin.
# 
# 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 324 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 in your conkyrc:
#
#	lua_load ~/.fluxbox/conky/conky_blue/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)
#   * vX 2011mint --> reEdit despot77 (18.02.2011)
#   * vX 2012 --> Altin reEdit (22.07.2012)
# 	* Added weather function (Accu Weather)
# 	* Added battery monitoring
# 	* Syslog monitoring
# 	* Running processes monitoring
# 	* Rearanged rings
# 	* Exctra network functions/monitoring
# 	* Changed Fonts
]]

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=0.15,
        -- "fg_colour" is the colour of the indicator part of the ring.
        fg_colour=0x0ABFFF,
        -- "fg_alpha" is the alpha value of the indicator part of the ring.
        fg_alpha=0.3,
        -- "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=100, y=175,
        -- "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='battery_percent',
        arg='',
        max=100,
        bg_colour=0xffffff,
        bg_alpha=0.2,
        fg_colour=0x0ABFFF,
        fg_alpha=0.8,
        x=222, y=110,
        radius=27,
        thickness=5,
        start_angle=-90,
        end_angle=270
    },

    {
        name='time',
        arg='%M.%S',
        max=60,
        bg_colour=0xffffff,
        bg_alpha=0.1,
        fg_colour=0x0ABFFF,
        fg_alpha=0.4,
        x=100, y=175,
        radius=66,
        thickness=5,
        start_angle=0,
        end_angle=360
    },
    {
        name='time',
        arg='%S',
        max=60,
        bg_colour=0xffffff,
        bg_alpha=0.1,
        fg_colour=0x0ABFFF,
        fg_alpha=0.6,
        x=100, y=175,
        radius=72,
        thickness=5,
        start_angle=0,
        end_angle=360
    },
    {
        name='time',
        arg='%d',
        max=31,
        bg_colour=0xffffff,
        bg_alpha=0.1,
        fg_colour=0x0ABFFF,
        fg_alpha=0.8,
        x=100, y=175,
        radius=80,
        thickness=5,
        start_angle=-90,
        end_angle=90
    },
    {
        name='time',
        arg='%m',
        max=12,
        bg_colour=0xffffff,
        bg_alpha=0.1,
        fg_colour=0x0ABFFF,
        fg_alpha=1,
        x=100, y=175,
        radius=86,
        thickness=5,
        start_angle=-90,
        end_angle=90
    },
    {
        name='cpu',
        arg='cpu0',
        max=100,
        bg_colour=0xffffff,
        bg_alpha=0.3,
        fg_colour=0x0ABFFF,
        fg_alpha=0.8,
        x=145, y=337,
        radius=25,
        thickness=5,
        start_angle=-90,
        end_angle=180
    },
    {
        name='cpu',
        arg='cpu1',
        max=100,
        bg_colour=0xffffff,
        bg_alpha=0.3,
        fg_colour=0x0ABFFF,
        fg_alpha=0.8,
        x=220, y=337,
        radius=25,
        thickness=5,
        start_angle=-90,
        end_angle=180
    },
    {
        name='fs_used_perc',
        arg='/',
        max=100,
        bg_colour=0xffffff,
        bg_alpha=0.2,
        fg_colour=0x0ABFFF,
        fg_alpha=0.8,
        x=35, y=590,
        radius=25,
        thickness=5,
        start_angle=-90,
        end_angle=180
    },
    {
        name='memperc',
        arg='',
        max=100,
        bg_colour=0xffffff,
        bg_alpha=0.2,
        fg_colour=0x0ABFFF,
        fg_alpha=0.8,
        x=130, y=590,
        radius=25,
        thickness=5,
        start_angle=-90,
        end_angle=180
    },
    {
        name='swapperc',
        arg='',
        max=100,
        bg_colour=0xffffff,
        bg_alpha=0.2,
        fg_colour=0x0ABFFF,
        fg_alpha=0.8,
        x=220, y=590,
        radius=25,
        thickness=5,
        start_angle=-90,
        end_angle=172
    },
}

-- 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=100
clock_y=175

show_seconds=true -- Change to true if you want the seconds hand

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 window_background(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+0.76*clock_r*math.sin(hours_arc)
    yh=yc-0.72*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+0.98*clock_r*math.sin(mins_arc)
    ym=yc-1.02*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+1.1*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

Yes, I've made sure that I'm calling the script from the right directory. Any help would be appreciated. Thanks.

Oh, and yes I've restarted conky since making these tweaks. Many times.

oz · 01-25-2013

Originally Posted by jdos1

I downloaded a conky and a lua script and I can't get the lua part to show up. To be honest, I don't even know what to look for.

You might need to install lua itself if you haven't done so already.

***elija*** · 01-25-2013

If there is a daft question to be found then I'll usually ask it so in order to keep the streak going

is your lua script at ~/.openbox/conky/conky_blue/clock_rings.lua and marked as executable (chmod +x ~/.openbox/conky/conky_blue/clock_rings.lua)

oz · 01-25-2013

Not sure which distro you are running, but you'll need to make sure your conky package was compiled with lua support. You can check the conky wiki for more info and maybe some tips that will help you:

Conky and Lua - Conky

**Sector11** · 03-13-2013

Originally Posted by oz

Not sure which distro you are running, but you'll need to make sure your conky package was compiled with lua support. You can check the conky wiki for more info and maybe some tips that will help you:

Conky and Lua - Conky

True enough oz ... best way to find out:

Code:

 13 Mar 13 | 10:49:54 ~
         $ conky -V
Conky 1.9.0 compiled Fri May 11 15:54:00 UTC 2012 for Linux 2.6.32-5-amd64 (x86_64)

Compiled in features:

System config file: /etc/conky/conky.conf
Package library path: /usr/lib/conky

 X11:
  * Xdamage extension
  * XDBE (double buffer extension)
  * Xft
  * ARGB visual

 Music detection:
  * Audacious
  * MPD
  * MOC
  * XMMS2

 General:
  * math
  * hddtemp
  * portmon
  * Curl
  * RSS
  * Weather (METAR)
  * Weather (XOAP)
  * wireless
  * support for IBM/Lenovo notebooks
  * nvidia
  * eve-online
  * config-output
  * Imlib2
  * apcupsd
  * iostats
  * ncurses
  * Lua

  Lua bindings:
   * Cairo
   * Imlib2
 
 13 Mar 13 | 10:49:58 ~
         $

"Most" distros come with various types of conkys to install. jdos1, check to see if you have a "conky-all" and install that:

Debian SID: acp = alias for apt-cache-policy

Code:

 13 Mar 13 | 10:52:32 ~
         $ acp conky
conky:
  Installed: (none)
  Candidate: 1.9.0-2
  Version table:
     1.9.0-2 0
        500 http://ftp.us.debian.org/debian/ sid/main amd64 Packages
 
 13 Mar 13 | 10:52:45 ~
         $ acp conky-all
conky-all:
  Installed: 1.9.0-2
  Candidate: 1.9.0-2
  Version table:
 *** 1.9.0-2 0
        500 http://ftp.us.debian.org/debian/ sid/contrib amd64 Packages
        100 /var/lib/dpkg/status
 
 13 Mar 13 | 10:52:50 ~
         $

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