rings-v2_tpl

--[[
Ring Meters by londonali1010 (2009)
Modified by La-Manoue (2016)
Automation template by popi (2017)

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 near the end of the script 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 ~/conky/rings-v2_local.lua
	lua_draw_hook_pre ring_stats
	
Changelog:
+ v2.1.1 -- addedd IO_WAIT ring
+ v2.1.0 -- templated for automation, 
+ v2.0.0 -- Changed some values for ArchLinux
+ v1.2.2 -- Added color change for near-limits values / modified placement
+ v1.2.1 -- Fixed minor bug that caused script to crash if conky_parse() returns a nil value (20.10.2009)
+ v1.2 -- Added option for the ending angle of the rings (07.10.2009)
+ 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)

]]

normal="0x34cdff"
warn="0xff7200"
crit="0xff000d"

-- seulement quand fond nécessaire
corner_r=35
bg_colour=0x3b3b3b
bg_alpha=0.2

-- blue     | 0x34cdff
-- red      | 0xff1d2b
-- green    | 0x1dff22
-- pink     | 0xff1d9f
-- orange   | 0xff8523
-- skyblue  | 0x008cff
-- darkgray | 0x323232

settings_table_io = {
    {
        name='top_io io_perc 1',
        arg='',
        max=100,
        bg_colour=0x3b3b3b,
        bg_alpha=0.8,
        fg_colour=0x34cdff,
        fg_alpha=0.8,
        x=370, y=98,
        radius=55,
        thickness=12,
        start_angle=120,
        end_angle=360
    },
    {
        name='top_io io_perc 2',
        arg='',
        max=100,
        bg_colour=0x3b3b3b,
        bg_alpha=0.6,
        fg_colour=0x34cdff,
        fg_alpha=0.8,
        x=370, y=98,
        radius=42,
        thickness=11,
        start_angle=120,
        end_angle=360
    },
    {
        name='top_io io_perc 3',
        arg='',
        max=100,
        bg_colour=0x3b3b3b,
        bg_alpha=0.4,
        fg_colour=0x34cdff,
        fg_alpha=0.8,
        x=370, y=98,
        radius=30,
        thickness=10,
        start_angle=120,
        end_angle=360
    }
}

settings_table = {
--{{ TEMPERATURE }}
--{{ CPU }}
    {
        name='memperc',
        arg='',
        max=100,
        bg_colour=0x3b3b3b,
        bg_alpha=0.8,
        fg_colour=0x34cdff,
        fg_alpha=0.8,
        x=340, y=234,
        radius=60,
        thickness=15,
        start_angle=180,
        end_angle=420
    },
    {
        name='swapperc',
        arg='',
        max=100,
        bg_colour=0x3b3b3b,
        bg_alpha=0.4,
        fg_colour=0x34cdff,
        fg_alpha=0.8,
        x=340, y=234,
        radius=45,
        thickness=12,
        start_angle=180,
        end_angle=420
    },
--{{ FILESYSTEM }}
--{{ NETWORK }}
    {
        name='time',
        arg='%H',
        max=24,
        bg_colour=0x3b3b3b,
        bg_alpha=0.4,
        fg_colour=0x34cdff,
        fg_alpha=0.8,
        x=230, y=406,
        radius=10,
        thickness=6,
        start_angle=0,
        end_angle=240
    },
    {
        name='time',
        arg='%M',
        max=60,
        bg_colour=0x3b3b3b,
        bg_alpha=0.6,
        fg_colour=0x34cdff,
        fg_alpha=0.8,
        x=230, y=406,
        radius=19,
        thickness=9,
        start_angle=0,
        end_angle=240
    },
    {
        name='time',
        arg='%S',
        max=60,
        bg_colour=0x3b3b3b,
        bg_alpha=0.8,
        fg_colour=0x34cdff,
        fg_alpha=0.8,
        x=230, y=406,
        radius=31,
        thickness=12,
        start_angle=0,
        end_angle=240
    },
--{{ BATTERY }}
    {
        name='kernel', --just to avoid unknown viariable '$' in console
        arg='',
        max=100,
        bg_colour=0x3b3b3b,
        bg_alpha=0.6,
        fg_colour=0x34cdff,
        fg_alpha=0.6,
        x=274, y=464,
        radius=5,
        thickness=13,
        start_angle=0,
        end_angle=360
    },
}

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 conky_ring_stats()
    -- 20170715 IO_WAIT
	local function setup_rings_io(cr,pt)
		local str=''
		local value=0
		
        local warn_value=50
        local crit_value=70

		str=string.format('${%s %s}',pt['name'],pt['arg'])
        iowait=0
        ioused=tonumber(conky_parse(str))
        if ioused>0 then 
            iowait=100 - ioused
        end
		value=tonumber(iowait)

		if value == nil then value = 0 end
		pct=value/pt['max']
		draw_ring(cr,pct,pt)
	end

	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)
		if value == nil then value = 0 end
		pct=value/pt['max']
		
		draw_ring(cr,pct,pt)
	end

	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
                display_temp=temp_watch()
		setup_rings(cr,settings_table[i])
	    end
        -- IO_WAIT
	    for i in pairs(settings_table_io) do
		setup_rings_io(cr,settings_table_io[i])
        end
	end
   cairo_surface_destroy(cs)
  cairo_destroy(cr)
end

-- Contrôle de l'espace disque
function disk_watch()

    warn_disk=93
    crit_disk=98
    -- poser une boucle plus tard... pas simple

--{{ DISK_WATCH }}
end

-- Contrôle de la température
function temp_watch()

    warn_value=70
    crit_value=80

--{{ TEMPERATURE_WATCH }}

    if temperature<warn_value then
        settings_table[1]['fg_colour']=normal
    elseif temperature<crit_value then
        settings_table[1]['fg_colour']=warn
    else
        settings_table[1]['fg_colour']=crit
    end
end

-- Battery color control
function battery_watch()

    warn_value=30
    crit_value=10

    --{{ BATTERY_WATCH }}

    if battery>warn_value then
        settings_table[index]['fg_colour']=normal
    elseif battery>crit_value then
        settings_table[index]['fg_colour']=warn
    else
        settings_table[index]['fg_colour']=crit
    end
end

-- Contrôle de l'interface active
-- choice to not probe network interface once conky is running. 
-- just call again create_conky.py to update if gateway interface has changed
--function iface_watch()
--
--    iface=conky_parse("${if_existing /proc/net/route enp1s0f2}enp1s0f2${else}wlan0${endif}")
--
--    settings_table[11]['arg']=iface
--    settings_table[12]['arg']=iface
--end

function conky_draw_bg()
    if conky_window==nil then return end
    local w=conky_window.width
    local h=conky_window.height
    local cs=cairo_xlib_surface_create(conky_window.display, conky_window.drawable, conky_window.visual, w, h)
    cr=cairo_create(cs)
    
    cairo_move_to(cr,corner_r,0)
    cairo_line_to(cr,w-corner_r,0)
    cairo_curve_to(cr,w,0,w,0,w,corner_r)
    cairo_line_to(cr,w,h-corner_r)
    cairo_curve_to(cr,w,h,w,h,w-corner_r,h)
    cairo_line_to(cr,corner_r,h)
    cairo_curve_to(cr,0,h,0,h,0,h-corner_r)
    cairo_line_to(cr,0,corner_r)
    cairo_curve_to(cr,0,0,0,0,corner_r,0)
    cairo_close_path(cr)
    
    cairo_set_source_rgba(cr,rgb_to_r_g_b(bg_colour,bg_alpha))
    cairo_fill(cr)
end


function conky_main()
    temp_watch()
    disk_watch()
    --iface_watch()
	-- if a battery is found
    --{{ BATTERY_ACTIVATE }}
    conky_ring_stats()
-- quand fond nécessaire
--    conky_draw_bg()
end