Conky Lua & Cairo Troubleshooting

[aymaraceci]

Change

		value=tonumber(str)
		pct=value/pt['max']

to

		value=tonumber(str)
		if ( value == nil ) then value = 0 end
		pct=value/pt['max']

That worked!!!

THANKS!!!

thank you for your fast and accurate answer!!!

See you arround!

[dk75]

I've got this "value is nil" errors to but it didn't make me any trouble thought. It was always once durring start for legitimate value of "conky_window.width" and it popped up in terminal so I've ruled it out by this code.
So I've had solution at hands.

[5BallJuggler]

Just upgraded to Karmic, and I'm getting this error.....
.....sometimes

Conky: X Error: type 0 Display 8dcb7e0 XID 23076034 serial 103 error_code 3 request_code 20 minor_code 0 other Display: 8dcb7e0

i've posted on the bug website

any ideas?

[d_eckert]

Hi, I am having no luck trying to get rings working.

I downloaded the rings-v1.2.lua script from conky hardcore and I copied the text for the .conkyrc from there as well, however when I run conky I get the following message:
Conky: llua_do_call: function conky_ring_stats execution failed: attempt to call a nil value

I tried deleting the battery entry from the settings_table as I am not using a laptop but that had no affect.

I got it working, I had saved the rings-v1.2.lua script to a different folder than ~/scripts and didn't change the lua_load line in .conkyrc to reflect this.

[5BallJuggler]

are you having troubles with the nil value still?
if so see post 31 in this thread.

[d_eckert]

nope no nil value errors anymore

[maulbox]

Hello londonali1010,

Hello searchOne,
i'm interesting with conky design that you post in here

i'ts using londonali1010 ring script.

i'm total newbie about conky script so i try configure that script to fit in my 1024x768 screen.

but i can't find the part of cpu 2 ring, that ican't move with the other

and the calendar day colom not in line with the date (as attached)

here the script :

background no
use_xft yes
xftfont terminus:size=8
xftalpha 0.2
update_interval 1
total_run_times 0
own_window yes
own_window_type normal
own_window_transparent yes
own_window_hints undecorated,below,sticky,skip_taskbar,skip_pager
own_window_class conky
double_buffer yes
no_buffers yes
cpu_avg_samples 2
net_avg_samples 2
use_spacer none
draw_shades no
draw_outline no
draw_borders no
draw_graph_borders no
default_color white
alignment tl
uppercase no
text_buffer_size 2048
imlib_cache_size 0
minimum_size 1000 290
gap_y 10
 
# — Lua Load — #
lua_load ~/scripts/rings.lua
lua_draw_hook_pre ring_stats
 
TEXT
${voffset 30}${goto 300}${diskiograph 80,300 FFFF00 FF0000 -t}${voffset -110}
${voffset 98}${goto 151}${color 1E90FF}${cpubar cpu5 2,727}${color}
${voffset -30}${goto 190}${font Zekton:size=12}CrunchBang \#! 9.04.01${font Zekton:size=8}${voffset 2}
${voffset 10}${goto 190}Conky ${conky_version}   ${goto 350}Kernel: ${kernel} 
${goto 190}${exec whoami} @ $nodename $machine   ${goto 350}Uptime: ${uptime}
${goto 190}Desktop: ${desktop_number} - ${desktop}${goto 350}CPU Temp: ${acpitemp}${offset -2} °C
${goto 190}HDD Temp: ${hddtemp /dev/sda}${offset -2} °C ${goto 350}Grafik Temp: ${nvidia temp}${offset -2} °C${if_existing /proc/net/route wlan0}${goto 450}WLAN: ${addrs wlan0}${endif}${if_existing /proc/net/route eth0}${goto 450}LAN: ${addrs eth0}${endif}
 
${goto 190}${font Zekton:Bold:size=10}Name top${goto 280}time${goto 330}cpu${goto 370}mem${goto 430}${font Zekton:Bold:size=10}Name top-io${goto 530}time${goto 580}mem${font Zekton:size=8}
${color red}${goto 190}${top name 1}   ${goto 280}${top time 1}${goto 330}${top cpu 1}${goto 370}${top mem 1} ${goto 430}${top_io 1}${top_io name 1}${goto 530}${top_io time 1}${goto 580}${top_io mem 1} ${color}${goto 690}${execi 99999 cat /proc/cpuinfo | grep "model name" -m1 | cut -d":" -f2 | cut -d" " -f2-}
${goto 190}${top name 2}   ${goto 280}${top time 2}${goto 330}${top cpu 2}${goto 370}${top mem 2}${color} ${top_io 2} ${goto 430}${top_io name 2}${goto 530}${top_io time 2}${goto 580}${top_io mem 2} ${goto 600}${execpi 3600 /home/search/conkynv.sh}
${goto 190}${top name 3}   ${goto 280}${top time 3}${goto 330}${top cpu 3}${goto 370}${top mem 3}${color} ${top_io 3} ${goto 430}${top_io name 3}${goto 530}${top_io time 3}${goto 580}${top_io mem 3}
${if_existing /proc/net/route wlan0}${voffset -210}${goto 600}${font DTPDingbats:size=18}${color green}C${font Zekton:size=12}${downspeed wlan0}${color}
 
${voffset -15}${goto 810}${font DTPDingbats:size=18}${color red}D${font Zekton:size=12}${upspeed wlan0}${color}${endif}
${if_existing /proc/net/route eth0}${voffset -210}${goto 810}${font DTPDingbats:size=18}${color green}C${font Zekton:size=12}${downspeed wlan0}${color}
 
${voffset -15}${goto 810}${font DTPDingbats:size=18}${color red}D${font Zekton:size=12}${upspeed wlan0}${color}${endif}
${font}
${voffset -215}
${goto 71}${color 1E90FF}RAM: ${memperc}%
${goto 71}${color FF0000}CPU-1: ${cpu cpu0}%
${goto 71}${color FF0000}CPU-2: ${cpu cpu1}%
${goto 71}${color FFFF00}BAT: ${battery_percent BAT0}%
${goto 71}${color 00FF00}Disk: ${fs_used_perc /}%${color}
${voffset -45}${goto 894}${font Zekton:size=10}${time %H:%M:%S}
 
${voffset -72}${color CDCD00}${goto 690}${font Zekton:Bold:size=8}${time %A}
${goto 690}${font Zekton:size=10}${time %_d %B %Y}${color}
${font LiberationMono:Bold:size=9}
${voffset -10}${execpi 60 DJS=`date +%_d`; cal -m | sed '1d' | sed '/./!d' | sed 's/$/                     /' | fold -w 21 | sed -n '/^.\{21\}/p' | sed 's/^/${goto 690} /' | sed /" $DJS "/s/" $DJS "/" "'${color orange}'"$DJS"'${color}'" "/}
${voffset -400}

rings.lua

--[[
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.lua
    lua_draw_hook_pre ring_stats
 
Changelog:
+ 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='cpu',
        -- "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='cpu0',
        -- "max" is the maximum value of the ring. If the Conky variable outputs a percentage, use 100.
        max=100,
        -- "bg_colour" is the colour of the base ring.
        bg_colour=0xCDCDC1,
        -- "bg_alpha" is the alpha value of the base ring.
        bg_alpha=0.5,
        -- "fg_colour" is the colour of the indicator part of the ring.
        fg_colour=0xFF0000,
        -- "fg_alpha" is the alpha value of the indicator part of the ring.
        fg_alpha=0.8,
        -- "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=120, y=120,
        -- "radius" is the radius of the ring.
        radius=81,
        -- "thickness" is the thickness of the ring, centred around the radius.
        thickness=10,
        -- "angle" is the starting angle of the ring, in degrees, clockwise from top. Value can be either positive or negative.
        angle=90
    },
    {
        name='cpu',
        arg='cpu1',
        max=100,
        bg_colour=0xCDCDC1,
        bg_alpha=0.5,
        fg_colour=0xFF0000,
        fg_alpha=0.5,
        x=100, y=120,
        radius=75,
        thickness=8,
        angle=90
    },
    {
        name='memperc',
        arg='',
        max=100,
        bg_colour=0xffffff,
        bg_alpha=0.2,
        fg_colour=0x1E90FF,
        fg_alpha=0.5,
        x=100, y=120,
        radius=82,
        thickness=5,
        angle=90
    },
    {
        name='fs_used_perc',
        arg='/',
        max=100,
        bg_colour=0xffffff,
        bg_alpha=0.1,
        fg_colour=0x00FF00,
        fg_alpha=0.5,
        x=100, y=120,
        radius=55,
        thickness=8,
        angle=90
    },
    {
        name='battery_percent',
        arg='BAT0',
        max=100,
        bg_colour=0xffffff,
        bg_alpha=0.2,
        fg_colour=0xFFFF00,
        fg_alpha=1,
        x=100, y=120,
        radius=65,
        thickness=8,
        angle=90
    },
    {
        name='time',
        arg='+%S',
        max=60,
        bg_colour=0xE3E3E3,
        bg_alpha=0.1,
        fg_colour=0xFFFF00,
        fg_alpha=0.7,
        x=924, y=120,
        radius=70,
        thickness=4,
        angle=0
    },
    {
        name='time',
        arg='+%M',
        max=60,
        bg_colour=0xE3E3E3,
        bg_alpha=0.1,
        fg_colour=0x00CD00,
        fg_alpha=0.7,
        x=924, y=120,
        radius=64,
        thickness=7,
        angle=0 
    },
    {
        name='time',
        arg='+%H',
        max=24,
        bg_colour=0xE3E3E3,
        bg_alpha=0.1,
        fg_colour=0xffffff,
        fg_alpha=0.7,
        x=924, y=120,
        radius=52,
        thickness=14,
        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(t, pt)
    if conky_window==nil then return end
    local w,h=conky_window.width,conky_window.height
    local cs=cairo_xlib_surface_create(conky_window.display,conky_window.drawable,conky_window.visual,w,h)
 
    cr=cairo_create(cs)
 
    local xc,yc,ring_r,ring_w,angle=pt['x'],pt['y'],pt['radius'],pt['thickness'],pt['angle']
    local bgc, bga, fgc, fga=pt['bg_colour'], pt['bg_alpha'], pt['fg_colour'], pt['fg_alpha']
 
    local angle_0=angle*(2*math.pi/360)-math.pi/2
    local t_arc=t*2*math.pi
 
    -- Draw background ring
 
    cairo_arc(cr,xc,yc,ring_r,0,2*math.pi)
    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)        
 
    cairo_destroy(cr)
    cr = nil
end
 
function conky_cairo_cleanup()
    cairo_surface_destroy(cs)
    cs = nil
end
 
function conky_ring_stats()
    local function setup_rings(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(pct,pt)
    end
 
    -- Check that Conky has been running for at least 5s
 
    local updates=conky_parse('${updates}')
    update_num=tonumber(updates)
 
    if update_num>5 then
        for i in pairs(settings_table) do
            setup_rings(settings_table[i])
        end
    end
end

capture my desktop :


please help and thanks for support.

regards,
Maulbox

[londonali1010]

Hi Maulbox...

In your rings.lua, the first ring (with all the comments in the settings_table) has a centre of x=120, y=100. All the others have x=100, y=100. Looks like you just missed that one!

[maulbox]

found it, i thoug below its not part of the script

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='cpu',
        -- "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='cpu0',
        -- "max" is the maximum value of the ring. If the Conky variable outputs a percentage, use 100.
        max=100,
        -- "bg_colour" is the colour of the base ring.
        bg_colour=0xCDCDC1,
        -- "bg_alpha" is the alpha value of the base ring.
        bg_alpha=0.5,
        -- "fg_colour" is the colour of the indicator part of the ring.
        fg_colour=0xFF0000,
        -- "fg_alpha" is the alpha value of the indicator part of the ring.
        fg_alpha=0.8,
        -- "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=120,
        -- "radius" is the radius of the ring.
        radius=91,
        -- "thickness" is the thickness of the ring, centred around the radius.
        thickness=10,
        -- "angle" is the starting angle of the ring, in degrees, clockwise from top. Value can be either positive or negative.
        angle=90

[searchOne]

Hi maulbox,
are the Fonts which are used in my Conky script also installed with you?
Font >LiberationMono, >DTPDingbats or >Zekton?

If not, please Installing only the missing Fonts and tries it once more!