Conky 3題（その１：システム情報）

システム情報や、天気予報、スライドショーを "Conky" で表示している。先ず、通常のデスクトップ、右端に見えるのが、システム情報や、日付、時計を表示している物。
次に、真ん中下が、スライドショー。






"shift + F9" を押して、Widget に切り替えると、左端に、世界の天気が表示されてるようにして有る。

先ずは、システム情報から。









ソースは、色んな所から戴いたのだけど、改造一杯したので、どこがオリジナルやら。

先ずは、これを、"~/.conky/.conkyrc" としてセーブ。

# 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 4096
#imlib_cache_size 0

# temperature_unit fahrenheit

# Window specifications #

own_window yes
own_window_type normal
own_window_transparent yes
own_window_hints undecorate,sticky,skip_taskbar,skip_pager,below
own_window_colour 000000

own_window_argb_visual no
own_window_argb_value 16

border_inner_margin 0
border_outer_margin 0

minimum_size 200 160
maximum_width 200

alignment tr
gap_x 0
gap_y 24

# 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 ~/.lua/scripts/clock_rings.lua
lua_draw_hook_pre clock_rings

TEXT
${voffset 8}${color FF6600}${font caviar dreams:size=16}${time %A}${font}${voffset -8}${alignr 50}${color FFFFFF}${font caviar dreams:size=38}${time %e}${font}
${color FFFFFF}${voffset -30}${color FFFFFF}${font caviar dreams:size=18}${time %b}${font}${voffset -3} ${color FFFFFF}${font caviar dreams:size=20}${time %Y}${font}${color FF6600}${hr}
${voffset -5}${color FF6600}${font caviar dreams:style=bold:size=12}${alignr 5}CW ${time %g}
${voffset 140}${color FFFFFF}${font caviar dreams:style=bold:size=16}${alignr -10}${time %R}${font} ${time %S}
${image ~/.conky/new-ubuntu-logo.png -p 64,140 -s 70x20}

${voffset 75}${color FF6600}${goto 130}RAM ${goto 165}${color FFFFFF}${memperc}%
${voffset -3}${color 339900}${goto 130}Swap ${goto 165}${color FFFFFF}${swapperc}%

${voffset 60}${color FF6600}${goto 80}Root ${goto 115}${color FFFFFF}${fs_used_perc /}%
${voffset -3}${color 0000FF}${goto 80}Home ${goto 115}${color FFFFFF}${fs_used_perc /home}%
${voffset -3}${color 339900}${goto 80}Data ${goto 115}${color FFFFFF}${fs_used_perc /media/Data}%


${color FF6600}CPU${color FFFFFF}
${goto 40}CPU Speed: ${alignr}${freq} MHz
${goto 40}Fan Speed: ${alignr}${execi 2 sensors | grep 'Master' | cut -b 14-21}
${voffset 3}${goto 5}Core0${goto 105}Core1
${voffset -1}${goto 5}${cpugraph 0 25,90 FFFFFF FFFFFF 100}${goto 105}${cpugraph 1 25,90 FFFFFF FFFFFF 100}
${voffset -1}${goto 5}${cpu 0}%${goto 55}${execi 5 sensors | grep 'Core 0' | cut -b 15-22}${goto 105}${cpu 0}%${goto 155}${execi 5 sensors | grep 'Core 1' | cut -b 15-22}


${color FF6600}Network${color FFFFFF}
${goto 40}Local IP: ${alignr}${addr wlan1}
${goto 40}Global IP: ${alignr}${execi 600 wget -q -O - http://checkip.dyndns.org | sed 's/.*Address\:\s\(.*\)<\/body>.*/\1/g'}
${goto 40}Wifi AP: ${alignr}${wireless_essid wlan1}
${goto 40}Wifi BitRate: ${alignr}${wireless_bitrate wlan1}
${goto 40}Wifi Quality: ${alignr}${wireless_link_qual_perc wlan1} %
${voffset 3}${goto 5}UpLoad${goto 105}DownLoad
${voffset -1}${goto 5}${upspeedgraph wlan1 25,90 FFFFFF FFFFFF 2048}${goto 105}${downspeedgraph wlan1 25,90 FFFFFF FFFFFF 2048}
${voffset -1}${goto 5}${upspeedf wlan1}kB${goto 55}${goto 105}${downspeedf wlan1}kB


${color FF6600}Highest CPU${color FFFFFF}
${GOTO 5}   Name${goto 130}CPU${goto 170}MEM
${GOTO 5}1: ${top name 1}${goto 120}${top cpu 1}${goto 160}${top mem 1}
${GOTO 5}2: ${top name 2}${goto 120}${top cpu 2}${goto 160}${top mem 2}
${GOTO 5}3: ${top name 3}${goto 120}${top cpu 3}${goto 160}${top mem 3}
${GOTO 5}4: ${top name 4}${goto 120}${top cpu 4}${goto 160}${top mem 4}
${GOTO 5}5: ${top name 5}${goto 120}${top cpu 5}${goto 160}${top mem 5}
${voffset 0}
${color FFFFFF}${font caviar dreams:size=8}Uptime: ${uptime_short}
${color FFFFFF}${font caviar dreams:size=8}Processes: ${processes}
${color FFFFFF}${font caviar dreams:size=8}Running: ${running_processes}
${color FF6600}${font caviar dreams:size=8}${alignr}${nodename}
${color FF6600}${font caviar dreams:size=8}${alignr}${pre_exec cat /etc/issue.net}  $machine
${color FF6600}${font caviar dreams:size=8}${alignr}Kernel: ${kernel}

次に、此れを、"~/.lua/script/clockrings.lua" として保存。

--[[
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 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=0xFF6600,
        -- "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=100, y=150,
        -- "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=0xFF6600,
        fg_alpha=0.4,
        x=100, y=150,
        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=0xFF6600,
        fg_alpha=0.6,
        x=100, y=150,
        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=0xFF6600,
        fg_alpha=0.8,
        x=100, y=150,
        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=0xFF6600,
        fg_alpha=1,
        x=100, y=150,
        radius=76,
        thickness=5,
        start_angle=-90,
        end_angle=90
    },
    -- {
    --     name='cpu',
    --     arg='cpu0',
    --     max=100,
    --     bg_colour=0xffffff,
    --     bg_alpha=0.2,
    --     fg_colour=0xFF6600,
    --     fg_alpha=0.8,
    --     x=50, y=300,
    --     radius=25,
    --     thickness=5,
    --     start_angle=-90,
    --     end_angle=180
    -- },
    {
        name='swapperc',
        arg='',
        max=100,
        bg_colour=0xffffff,
        bg_alpha=0.2,
        fg_colour=0x339900,
        fg_alpha=0.8,
        x=125, y=300,
        radius=50,
        thickness=8,
        start_angle=180,
        end_angle=450
    },
    {
        name='memperc',
        arg='',
        max=100,
        bg_colour=0xffffff,
        bg_alpha=0.2,
        fg_colour=0xFF6600,
        fg_alpha=0.8,
        x=125, y=300,
        radius=40,
        thickness=8,
        start_angle=180,
        end_angle=450
    },
    {
        name='fs_used_perc',
        arg='/media/Data',
        max=100,
        bg_colour=0xffffff,
        bg_alpha=0.2,
        fg_colour=0x339900,
        fg_alpha=0.8,
        x=75, y=400,
        radius=50,
        thickness=8,
        start_angle=180,
        end_angle=450
    },
    {
        name='fs_used_perc',
        arg='/home',
        max=100,
        bg_colour=0xffffff,
        bg_alpha=0.2,
        fg_colour=0x0000FF,
        fg_alpha=0.8,
        x=75, y=400,
        radius=40,
        thickness=8,
        start_angle=180,
        end_angle=450
    },
    {
        name='fs_used_perc',
        arg='/',
        max=100,
        bg_colour=0xffffff,
        bg_alpha=0.2,
        fg_colour=0xff6600,
        fg_alpha=0.8,
        x=75, y=400,
        radius=30,
        thickness=8,
        start_angle=180,
        end_angle=450
    },
    --     {
    --     name='downspeedf',
    --     arg='wlan1',
    --     max=100,
    --     bg_colour=0xffffff,
    --     bg_alpha=0.2,
    --     fg_colour=0x339900,
    --     fg_alpha=0.8,
    --     x=150, y=500,
    --     radius=25,
    --     thickness=4,
    --     start_angle=-90,
    --     end_angle=180
    -- },
    --     {
    --     name='upspeedf',
    --     arg='wlan1',
    --     max=100,
    --     bg_colour=0xffffff,
    --     bg_alpha=0.2,
    --     fg_colour=0xff6600,
    --     fg_alpha=0.8,
    --     x=150, y=500,
    --     radius=20,
    --     thickness=4,
    --     start_angle=-90,
    --     end_angle=180
    -- },
}

-- 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=150

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)
    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)    
    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)

    cairo_destroy(cr)
end

更に、この画像を、"~/.conky/new-ubuntu-logo.png" として、保存。

これで、

  conky -d -c ~/.conky/.conkyrc  > /dev/null 2>&1

と、ターミナルから打てば動くはず。

もしかしたら、これ以前に、cairo をインストールしないと駄目かも。