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142 lines
4.2 KiB
Lua
142 lines
4.2 KiB
Lua
--[[
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Ring Meters by londonali1010 (2009)
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This script draws percentage meters as rings. It is fully customisable; all options are described in the script.
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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.
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To call this script in Conky, use the following (assuming that you save this script to ~/scripts/rings.lua):
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lua_load ~/scripts/rings-v1.2.1.lua
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lua_draw_hook_pre ring_stats
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Changelog:
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+ v1.2.1 -- Fixed minor bug that caused script to crash if conky_parse() returns a nil value (20.10.2009)
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+ v1.2 -- Added option for the ending angle of the rings (07.10.2009)
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+ 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)
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+ v1.0 -- Original release (28.09.2009)
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]]
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settings_table = {
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{
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name='cpu',
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arg='cpu0',
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max=100,
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bg_colour=0xffffff,
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bg_alpha=0.2,
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fg_colour=0xbd93f9,
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fg_alpha=1,
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x=49.5, y=182.3,
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radius=25,
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thickness=7,
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start_angle=0,
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end_angle=360,
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},
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{
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name='memperc',
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arg='',
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max=100,
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bg_colour=0xffffff,
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bg_alpha=0.2,
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fg_colour=0x50fa7b,
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fg_alpha=1,
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x=119.5, y=182.3,
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radius=25,
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thickness=7,
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start_angle=0,
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end_angle=360
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},
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{
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name='battery_percent',
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arg='BAT0',
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max=100,
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bg_colour=0xffffff,
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bg_alpha=0.2,
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fg_colour=0xf1fa8c,
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fg_alpha=1,
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x=190, y=182.3,
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radius=25,
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thickness=7,
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start_angle=0,
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end_angle=360
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},
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{
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name='hwmon temp 1',
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arg='',
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max=100,
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bg_colour=0xffffff,
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bg_alpha=0.2,
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fg_colour=0xff79c6,
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fg_alpha=1,
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x=259.5, y=182.3,
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radius=25,
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thickness=7,
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start_angle=0,
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end_angle=360,
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},
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}
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require 'cairo'
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function rgb_to_r_g_b(colour,alpha)
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return ((colour / 0x10000) % 0x100) / 255., ((colour / 0x100) % 0x100) / 255., (colour % 0x100) / 255., alpha
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end
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function draw_ring(cr,t,pt)
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local w,h=conky_window.width,conky_window.height
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local xc,yc,ring_r,ring_w,sa,ea=pt['x'],pt['y'],pt['radius'],pt['thickness'],pt['start_angle'],pt['end_angle']
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local bgc, bga, fgc, fga=pt['bg_colour'], pt['bg_alpha'], pt['fg_colour'], pt['fg_alpha']
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local angle_0=sa*(2*math.pi/360)-math.pi/2
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local angle_f=ea*(2*math.pi/360)-math.pi/2
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local t_arc=t*(angle_f-angle_0)
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-- Draw background ring
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cairo_arc(cr,xc,yc,ring_r,angle_0,angle_f)
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cairo_set_source_rgba(cr,rgb_to_r_g_b(bgc,bga))
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cairo_set_line_width(cr,ring_w)
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cairo_stroke(cr)
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-- Draw indicator ring
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cairo_arc(cr,xc,yc,ring_r,angle_0,angle_0+t_arc)
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cairo_set_source_rgba(cr,rgb_to_r_g_b(fgc,fga))
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cairo_stroke(cr)
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end
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function conky_ring_stats()
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local function setup_rings(cr,pt)
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local str=''
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local value=0
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str=string.format('${%s %s}',pt['name'],pt['arg'])
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str=conky_parse(str)
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value=tonumber(str)
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if value == nil then value = 0 end
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pct=value/pt['max']
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draw_ring(cr,pct,pt)
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end
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if conky_window==nil then return end
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local cs=cairo_xlib_surface_create(conky_window.display,conky_window.drawable,conky_window.visual, conky_window.width,conky_window.height)
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local cr=cairo_create(cs)
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local updates=conky_parse('${updates}')
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update_num=tonumber(updates)
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if update_num>5 then
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for i in pairs(settings_table) do
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setup_rings(cr,settings_table[i])
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end
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end
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cairo_surface_destroy(cs)
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cairo_destroy(cr)
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end
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