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- settings_table = {
- {
- name='mpd_percent',
- arg='',
- max=100,
- bg_colour=0xffffff,
- bg_alpha=0.1,
- fg_colour=0xffffff,
- fg_alpha=0.4,
- x=70, y=170,
- radius=60,
- thickness=7,
- start_angle=0,
- end_angle=360
- },
- }
- require 'cairo'
- function conky_my_flag(my_arg)
- flag = my_arg
- return ""
- end
- 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 port=pt['max']
- 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 arc_w = 2*math.pi/port -- Sets width of arc to 1/"max"nth of a circle
- local angle_0 = sa*(2*math.pi/360)-math.pi/2 -- Converts the starting angle to radians & translates to starting from the top
- local angle_f = ea*(2*math.pi/360)-math.pi/2
- local t_arc = angle_0 + t*2*math.pi -- Converts the percentage to a part of 2*pi radians & adds the starting angle
- -- 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, t_arc+arc_w)
- 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('${%s %s}',pt['name'],pt['arg'])
- str=conky_parse(str)
- value=tonumber(str)
- pct=value/pt['max']
- draw_ring(cr,pct,pt)
- end
- if conky_window==nil then return end
- local cs=cairo_xlib_surface_create(conky_window.display,conky_window.drawable,conky_window.visual, conky_window.width,conky_window.height)
- local cr=cairo_create(cs)
- if tonumber(flag) == 1 then
- local updates=conky_parse('${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
- cairo_destroy(cr)
- end
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