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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 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-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)
- ]]
- conky_background_color = 0x000000
- conky_background_alpha = 0.5
- ring_background_color = 0xffffff
- ring_background_alpha = 0.15
- ring_foreground_color = 0xffffff
- ring_foreground_alpha = 0.5
- 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=ring_background_color,
- -- "bg_alpha" is the alpha value of the base ring.
- bg_alpha=ring_background_alpha,
- -- "fg_colour" is the colour of the indicator part of the ring.
- fg_colour=ring_foreground_color,
- -- "fg_alpha" is the alpha value of the indicator part of the ring.
- fg_alpha=ring_foreground_alpha,
- -- "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=26, y=25,
- -- "radius" is the radius of the ring.
- radius=10,
- -- "thickness" is the thickness of the ring, centred around the radius.
- thickness=6,
- -- "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 (e.g. more clockwise) than start_angle.
- end_angle=360
- },
- {
- name='time',
- arg='%M.%S',
- max=60,
- bg_colour=ring_background_color,
- bg_alpha=ring_background_alpha,
- fg_colour=ring_foreground_color,
- fg_alpha=ring_foreground_alpha,
- x=26, y=25,
- radius=16,
- thickness=4,
- start_angle=0,
- end_angle=360
- },
- {
- name='time',
- arg='%S',
- max=60,
- bg_colour=ring_background_color,
- bg_alpha=ring_background_alpha,
- fg_colour=ring_foreground_color,
- fg_alpha=ring_foreground_alpha,
- x=26, y=25,
- radius=20,
- thickness=2,
- start_angle=0,
- end_angle=360
- },
- {
- name='cpu',
- arg='cpu1',
- max=100,
- bg_colour=ring_background_color,
- bg_alpha=ring_background_alpha,
- fg_colour=ring_foreground_color,
- fg_alpha=ring_foreground_alpha,
- x=26, y=75,
- radius=19,
- thickness=3,
- start_angle=-90,
- end_angle=210
- },
- {
- name='memperc',
- arg='',
- max=100,
- bg_colour=ring_background_color,
- bg_alpha=ring_background_alpha,
- fg_colour=ring_foreground_color,
- fg_alpha=ring_foreground_alpha,
- x=26, y=125,
- radius=19,
- thickness=5,
- start_angle=-90,
- end_angle=200
- },
- {
- name='swapperc',
- arg='',
- max=100,
- bg_colour=ring_background_color,
- bg_alpha=ring_background_alpha,
- fg_colour=ring_foreground_color,
- fg_alpha=ring_foreground_alpha,
- x=26, y=125,
- radius=13,
- thickness=5,
- start_angle=-90,
- end_angle=180
- },
- {
- name='upspeedf',
- arg='eth0',
- max=32,
- bg_colour=ring_background_color,
- bg_alpha=ring_background_alpha,
- fg_colour=ring_foreground_color,
- fg_alpha=ring_foreground_alpha,
- x=26, y=175,
- radius=13,
- thickness=5,
- start_angle=-90,
- end_angle=180
- },
- {
- name='downspeedf',
- arg='eth0',
- max=135,
- bg_colour=ring_background_color,
- bg_alpha=ring_background_alpha,
- fg_colour=ring_foreground_color,
- fg_alpha=ring_foreground_alpha,
- x=26, y=175,
- radius=19,
- thickness=5,
- start_angle=-90,
- end_angle=200
- }
- }
- 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 conky_round_rect(cr, x0, y0, w, h, r)
- if (w == 0) or (h == 0) then return end
- local x1 = x0 + w
- local y1 = y0 + h
- if w/2 < r then
- if h/2 < r then
- cairo_move_to (cr, x0, (y0 + y1)/2)
- cairo_curve_to (cr, x0 ,y0, x0, y0, (x0 + x1)/2, y0)
- cairo_curve_to (cr, x1, y0, x1, y0, x1, (y0 + y1)/2)
- cairo_curve_to (cr, x1, y1, x1, y1, (x1 + x0)/2, y1)
- cairo_curve_to (cr, x0, y1, x0, y1, x0, (y0 + y1)/2)
- else
- cairo_move_to (cr, x0, y0 + r)
- cairo_curve_to (cr, x0 ,y0, x0, y0, (x0 + x1)/2, y0)
- cairo_curve_to (cr, x1, y0, x1, y0, x1, y0 + r)
- cairo_line_to (cr, x1 , y1 - r)
- cairo_curve_to (cr, x1, y1, x1, y1, (x1 + x0)/2, y1)
- cairo_curve_to (cr, x0, y1, x0, y1, x0, y1- r)
- end
- else
- if h/2 < r then
- cairo_move_to (cr, x0, (y0 + y1)/2)
- cairo_curve_to (cr, x0 , y0, x0 , y0, x0 + r, y0)
- cairo_line_to (cr, x1 - r, y0)
- cairo_curve_to (cr, x1, y0, x1, y0, x1, (y0 + y1)/2)
- cairo_curve_to (cr, x1, y1, x1, y1, x1 - r, y1)
- cairo_line_to (cr, x0 + r, y1)
- cairo_curve_to (cr, x0, y1, x0, y1, x0, (y0 + y1)/2)
- else
- cairo_move_to (cr, x0, y0 + r)
- cairo_curve_to (cr, x0 , y0, x0 , y0, x0 + r, y0)
- cairo_line_to (cr, x1 - r, y0)
- cairo_curve_to (cr, x1, y0, x1, y0, x1, y0 + r)
- cairo_line_to (cr, x1 , y1 - r)
- cairo_curve_to (cr, x1, y1, x1, y1, x1 - r, y1)
- cairo_line_to (cr, x0 + r, y1)
- cairo_curve_to (cr, x0, y1, x0, y1, x0, y1- r)
- end
- end
- cairo_close_path (cr)
- 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
- cs, cr = nil -- initialize our cairo surface and context to nil
- 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)
- if cs == nil or cairo_xlib_surface_get_width(cs) ~= conky_window.width or cairo_xlib_surface_get_height(cs) ~= conky_window.height then
- if cs then cairo_surface_destroy(cs) end
- cs = cairo_xlib_surface_create(conky_window.display, conky_window.drawable, conky_window.visual, conky_window.width, conky_window.height)
- end
- if cr then cairo_destroy(cr) end
- cr = cairo_create(cs)
- local updates=conky_parse('${updates}')
- update_num=tonumber(updates)
- if update_num>5 then
- conky_round_rect(cr, 3, 0, conky_window.width-6, conky_window.height-3, 15)
- cairo_set_source_rgba(cr, rgb_to_r_g_b(conky_background_color, conky_background_alpha))
- cairo_fill(cr)
- for i in pairs(settings_table) do
- setup_rings(cr,settings_table[i])
- end
- end
- cairo_destroy(cr)
- cr = nil
- end
- function conky_cairo_cleanup()
- cairo_surface_destroy(cs)
- cs = nil
- end
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