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- --[[
- 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 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 ~/scripts/rings-v1.2.1.lua
- lua_draw_hook_pre ring_stats
- Changelog:
- + 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)
- ]]
- settings_table = {
- {
- name='cpu',
- arg='cpu0',
- max=100,
- bg_colour=0xffffff,
- bg_alpha=0.2,
- fg_colour=0xff7607,
- fg_alpha=0.8,
- x=210, y=115,
- radius=30,
- thickness=9,
- start_angle=0,
- end_angle=270
- },
- {
- name='memperc',
- arg='',
- max=100,
- bg_colour=0xffffff,
- bg_alpha=0.2,
- fg_colour=0xff7607,
- fg_alpha=0.8,
- x=212, y=226,
- radius=28,
- thickness=9,
- start_angle=0,
- end_angle=270
- },
- {
- name='swapperc',
- arg='',
- max=100,
- bg_colour=0xffffff,
- bg_alpha=0.2,
- fg_colour=0xff7607,
- fg_alpha=0.8,
- x=112, y=465,
- radius=23,
- thickness=9,
- start_angle=0,
- end_angle=270
- },
- {
- name='fs_used_perc',
- arg='/',
- max=100,
- bg_colour=0xffffff,
- bg_alpha=0.2,
- fg_colour=0xff7607,
- fg_alpha=0.8,
- x=209, y=330,
- radius=35,
- thickness=9,
- start_angle=0,
- end_angle=270
- },
- {
- name='downspeedf',
- arg='ttyUSB0',
- max=1000,
- bg_colour=0xffffff,
- bg_alpha=0.2,
- fg_colour=0x36a007,
- fg_alpha=0.8,
- x=185, y=443,
- radius=31,
- thickness=9,
- start_angle=0,
- end_angle=270
- },
- {
- name='upspeedf',
- arg='ttyUSB0',
- max=100,
- bg_colour=0xffffff,
- bg_alpha=0.2,
- fg_colour=0xf8ce58,
- fg_alpha=0.8,
- x=185, y=443,
- radius=17,
- thickness=9,
- start_angle=0,
- end_angle=270
- },
- }
- 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()
- 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
- setup_rings(cr,settings_table[i])
- end
- end
- end
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