对于熟悉Conky的人来说，这应该更有意义。
我正在尝试获取以下 Lua 脚本来实际显示“NET”环的值。我知道代码在Conky本身的脚本之外工作，因为运行conky -t '${downspeedf wlan0}'输出一个可接受的值。我也知道conky_parse下面代码中的位有效，因为所有其他环都运行良好。为什么它不将值输出为数字（在环的中心）或作为环本身？
（我删掉了一些不相关的东西，以便适合这个问题。）
-------------------------------------------------------------------------------
-- draw_gauge_ring
-- display gauges
--
function draw_gauge_ring(data)
local value = data.value
local value_max = data.value_max
local x, y = data.x, data.y
local graph_radius = data.graph_radius
local graph_thickness, graph_unit_thickness = data.graph_thickness, data.graph_unit_thickness
local graph_start_angle = data.graph_start_angle
local graph_unit_angle = data.graph_unit_angle
local graph_bg_colour, graph_bg_alpha = data.graph_bg_colour, data.graph_bg_alpha
local graph_fg_colour, graph_fg_alpha = data.graph_fg_colour, data.graph_fg_alpha
local hand_fg_colour, hand_fg_alpha = data.hand_fg_colour, data.hand_fg_alpha
local graph_end_angle = (value_max * graph_unit_angle) % 360
if value == nil then value=0 end
-- background ring
cairo_arc(cr, x, y, graph_radius, angle_to_position(graph_start_angle, 0), angle_to_position(graph_start_angle, graph_end_angle))
cairo_set_source_rgba(cr, rgb_to_r_g_b(graph_bg_colour, graph_bg_alpha))
cairo_set_line_width(cr, graph_thickness)
cairo_stroke(cr)
-- arc of value
local val = value % (value_max + 1)
local start_arc = 0
local stop_arc = 0
local i = 1
while i <= val do
start_arc = (graph_unit_angle * i) - graph_unit_thickness
stop_arc = (graph_unit_angle * i)
cairo_arc(cr, x, y, graph_radius, angle_to_position(graph_start_angle, start_arc), angle_to_position(graph_start_angle, stop_arc))
cairo_set_source_rgba(cr, rgb_to_r_g_b(graph_fg_colour, graph_fg_alpha))
cairo_stroke(cr)
i = i + 1
end
local angle = start_arc
-- hand
start_arc = (graph_unit_angle * val) - (graph_unit_thickness * 2)
stop_arc = (graph_unit_angle * val)
cairo_arc(cr, x, y, graph_radius, angle_to_position(graph_start_angle, start_arc), angle_to_position(graph_start_angle, stop_arc))
cairo_set_source_rgba(cr, rgb_to_r_g_b(hand_fg_colour, hand_fg_alpha))
cairo_stroke(cr)
-- graduations marks
local graduation_radius = data.graduation_radius
local graduation_thickness, graduation_mark_thickness = data.graduation_thickness, data.graduation_mark_thickness
local graduation_unit_angle = data.graduation_unit_angle
local graduation_fg_colour, graduation_fg_alpha = data.graduation_fg_colour, data.graduation_fg_alpha
if graduation_radius > 0 and graduation_thickness > 0 and graduation_unit_angle > 0 then
local nb_graduation = graph_end_angle / graduation_unit_angle
local i = 0
while i < nb_graduation do
cairo_set_line_width(cr, graduation_thickness)
start_arc = (graduation_unit_angle * i) - (graduation_mark_thickness / 2)
stop_arc = (graduation_unit_angle * i) + (graduation_mark_thickness / 2)
cairo_arc(cr, x, y, graduation_radius, angle_to_position(graph_start_angle, start_arc), angle_to_position(graph_start_angle, stop_arc))
cairo_set_source_rgba(cr,rgb_to_r_g_b(graduation_fg_colour,graduation_fg_alpha))
cairo_stroke(cr)
cairo_set_line_width(cr, graph_thickness)
i = i + 1
end
end
-- text
local txt_radius = data.txt_radius
local txt_weight, txt_size = data.txt_weight, data.txt_size
local txt_fg_colour, txt_fg_alpha = data.txt_fg_colour, data.txt_fg_alpha
local movex = txt_radius * math.cos(angle_to_position(graph_start_angle, angle))
local movey = txt_radius * math.sin(angle_to_position(graph_start_angle, angle))
cairo_select_font_face (cr, "ubuntu", CAIRO_FONT_SLANT_NORMAL, txt_weight)
cairo_set_font_size (cr, txt_size)
cairo_set_source_rgba (cr, rgb_to_r_g_b(txt_fg_colour, txt_fg_alpha))
cairo_move_to (cr, x + movex - (txt_size / 2), y + movey + 3)
cairo_show_text (cr, value)
cairo_stroke (cr)
-- caption
local caption = data.caption
local caption_weight, caption_size = data.caption_weight, data.caption_size
local caption_fg_colour, caption_fg_alpha = data.caption_fg_colour, data.caption_fg_alpha
local tox = graph_radius * (math.cos((graph_start_angle * 2 * math.pi / 360)-(math.pi/2)))
local toy = graph_radius * (math.sin((graph_start_angle * 2 * math.pi / 360)-(math.pi/2)))
cairo_select_font_face (cr, "ubuntu", CAIRO_FONT_SLANT_NORMAL, caption_weight);
cairo_set_font_size (cr, caption_size)
cairo_set_source_rgba (cr, rgb_to_r_g_b(caption_fg_colour, caption_fg_alpha))
cairo_move_to (cr, x + tox + 5, y + toy + 3)
-- bad hack but not enough time !
if graph_start_angle < 105 then
cairo_move_to (cr, x + tox - 30, y + toy + 1)
end
cairo_show_text (cr, caption)
cairo_stroke (cr)
end
-------------------------------------------------------------------------------
-- draw_ring
-- simple rings
--
function draw_ring(data)
local value = data.value
local value_max = data.value_max
local bgc = data.bg_colour
local bga = data.bg_alpha
local fgc = data.fg_colour
local fga = data.fg_alpha
local xc, yc = data.x, data.y
local radius = data.radius
local thickness = data.thickness
local sa = data.start_angle
local ea = data.end_angle
local lr = data.lr
if value == nil then value=0 end
local pct = value/value_max
local angle_0 = sa * math.pi/180 - math.pi/2
local angle_f = ea * math.pi/180 - math.pi/2
local pct_arc = pct * (angle_f - angle_0)
-- Draw background ring
cairo_arc(cr, xc, yc, radius, angle_0, angle_f)
cairo_set_source_rgba(cr, rgb_to_r_g_b(bgc, bga))
cairo_set_line_width(cr, thickness)
cairo_stroke(cr)
-- Draw indicator ring
cairo_arc(cr, xc, yc, radius, angle_0, angle_0 + pct_arc)
cairo_set_source_rgba(cr, rgb_to_r_g_b(fgc, fga))
cairo_stroke(cr)
end
-------------------------------------------------------------------------------
-- draw_gauge_bars
-- display gauge
--
function draw_gauge_bars(data)
local x=data.x
local y=data.y
local divisions=data.divisions
local div_width=data.div_width
local div_height=data.div_height
local div_gap=data.div_gap
local br,bg,bb,ba=rgb_to_r_g_b(data.bg_color, data.bg_alpha)
local sr,sg,sb,sa=rgb_to_r_g_b(data.st_color, data.fg_alpha)
local mr,mg,mb,ma=rgb_to_r_g_b(data.mid_color, data.fg_alpha)
local er,eg,eb,ea=rgb_to_r_g_b(data.end_color, data.fg_alpha)
if data.value==nil then value=0 else value=data.value end
local value_max=data.value_max
local value_divs=(value/value_max)*divisions
cairo_set_line_width (cr,div_width)
for i=1,divisions do
if i<(divisions/2) and i<=value_divs then
colr=((mr-sr)*(i/(divisions/2)))+sr
colg=((mg-sg)*(i/(divisions/2)))+sg
colb=((mb-sb)*(i/(divisions/2)))+sb
cola=((ma-sa)*(i/(divisions/2)))+sa
elseif i>=(divisions/2) and i<=value_divs then
colr=((er-mr)*((i-(divisions/2))/(divisions/2)))+mr
colg=((eg-mg)*((i-(divisions/2))/(divisions/2)))+mg
colb=((eb-mb)*((i-(divisions/2))/(divisions/2)))+mb
cola=((ea-ma)*((i-(divisions/2))/(divisions/2)))+ma
else
colr=br
colg=bg
colb=bb
cola=ba
end
cairo_set_source_rgba (cr,colr,colg,colb,cola)
if data.orientation == "horizontal" then
cairo_move_to (cr,x+((div_width+div_gap)*i-1),y)
else
cairo_move_to (cr,x,y-((div_width+div_gap)*i-1))
end
cairo_rel_line_to (cr,0,div_height)
cairo_stroke (cr)
end
end--function bars
-------------------------------------------------------------------------------
-- MAIN
function conky_main(color, theme, drawbg, unit, area_code, posfix)
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)
cr = cairo_create(cs)
local updates=tonumber(conky_parse('${updates}'))
if updates>5 then
-- BACKGROUND COLOR
if color == "white" then
bgc = 0xffffff
bga = 0.4
else
bgc = 0x1e1c1a
bga = 0.8
end
local theme = ("0x" .. theme)
local w = conky_window.width
local h = conky_window.height
local hori_space = w*0.07
local vert_space = h*0.5
local xp = hori_space
local yp = vert_space
-- BACKGROUND
if drawbg == "on" then
settings={
x=0-1 , y=0 ,
w=w+1 , h=h ,
border=1 ,
colour={{0,bgc,0.2},},
};draw_box(settings)
settings={
x=0-1 , y=0 ,
w=w+1 , h=h ,
colour={{0.5,bgc,bga},{1,bgc,bga-0.1},},
linear_gradient={0,0,w/2,h/2},
};draw_box(settings)
end
-- APPEARANCE
if color == "white" then
bgc = 0x1e1c1a
fgc = 0x1e1c1a
bga = 0.15
fga = 0.8
else
bgc = 0xffffff
fgc = 0xffffff
bga = 0.1
fga = 0.8
end
settings = {--HOUR
txt="88:88",
x=(w/2)-140 , y=50 ,
txt_weight=1 , txt_size=50,
txt_fg_colour=fgc , txt_fg_alpha=bga ,
font = "Digital Readout Thick Upright"
};display_text(settings)
settings = {--HOUR
txt=conky_parse("${time %H:}"),
x=(w/2)-140 , y=50 ,
txt_weight=1 , txt_size=50,
txt_fg_colour=theme , txt_fg_alpha=fga ,
font = "Digital Readout Thick Upright"
};display_text(settings)
settings = {--MINUTES
txt=conky_parse("${time %M}"),
x=(w/2)-78 , y=50 ,
txt_weight=1 , txt_size=50 ,
txt_fg_colour=theme , txt_fg_alpha=fga ,
font = "Digital Readout Thick Upright"
};display_text(settings)
if unit =='f' then
unitChar = 'F°'
else
unitChar = 'C°'
end
settings = {--DAY TEMP
txt="Temp: " .. get_yahoo_weather_info("cur", area_code, unit) .. unitChar,
x=(w/2)+60 , y=20 ,
txt_weight=0 , txt_size=12 ,
txt_fg_colour=fgc , txt_fg_alpha=fga ,
};display_text(settings)
settings = {--DATA
txt=conky_parse("${time %d}") .. " " .. conky_parse("${time %b}") .. " " .. conky_parse("${time %Y}"),
x=(w/2)+60 , y=35 ,
txt_weight=0 , txt_size=12 ,
txt_fg_colour=theme , txt_fg_alpha=fga ,
};display_text(settings)
settings = {--NAME WEEK
txt=conky_parse("${time %A}"),
x=(w/2)+60 , y=48 ,
txt_weight=0 , txt_size=12 ,
txt_fg_colour=fgc , txt_fg_alpha=fga ,
};display_text(settings)
settings = {--DAYS GRAPH
value=tonumber(conky_parse("${time %d}")),
value_max=31 ,
x=w/2 , y=yp ,
graph_radius=33 ,
graph_thickness=5 ,
graph_start_angle=215 ,
graph_unit_angle=3.6 , graph_unit_thickness=2.6 ,
graph_bg_colour=bgc , graph_bg_alpha=bga ,
graph_fg_colour=theme , graph_fg_alpha=fga ,
hand_fg_colour=theme , hand_fg_alpha=0.0 ,
txt_radius=42 ,
txt_weight=1 , txt_size=8.0 ,
txt_fg_colour=fgc , txt_fg_alpha=fga ,
graduation_radius=28 ,
graduation_thickness=0 , graduation_mark_thickness=1 ,
graduation_unit_angle=27 ,
graduation_fg_colour=theme , graduation_fg_alpha=0.4 ,
caption='' ,
caption_weight=1 , caption_size=10.0 ,
caption_fg_colour=fgc , caption_fg_alpha=fga ,
};draw_gauge_ring(settings)
settings = {--MONTHS GRAPH
value=tonumber(conky_parse("${time %m}")),
value_max=12 ,
x=w/2 , y=yp ,
graph_radius=33 ,
graph_thickness=5 ,
graph_start_angle=34 ,
graph_unit_angle=9.2 , graph_unit_thickness=8.2 ,
graph_bg_colour=bgc , graph_bg_alpha=bga ,
graph_fg_colour=theme , graph_fg_alpha=fga ,
hand_fg_colour=theme , hand_fg_alpha=0.0 ,
txt_radius=42 ,
txt_weight=1 , txt_size=8.0 ,
txt_fg_colour=fgc , txt_fg_alpha=fga ,
graduation_radius=28 ,
graduation_thickness=0 , graduation_mark_thickness=1 ,
graduation_unit_angle=27 ,
graduation_fg_colour=theme , graduation_fg_alpha=0.3 ,
caption='' ,
caption_weight=1 , caption_size=10.0 ,
caption_fg_colour=fgc , caption_fg_alpha=fga ,
};draw_gauge_ring(settings)
settings = {--SECONDS
value=tonumber(conky_parse("${time %S}")),
value_max = 60 ,
x = w/2 , y = yp ,
bg_colour = bgc , bg_alpha = bga ,
fg_colour = theme , fg_alpha = fga ,
radius =25 , thickness = 10 ,
start_angle = 0 , end_angle = 360 ,
lr = 0 ,
};draw_ring(settings)
settings = {--CLOCK HANDS
xc = w/2 ,
yc = yp ,
colour = bgc ,
alpha = 1 ,
show_secs = true ,
size = 40 ,
};clock_hands(settings)
xp = ((w/2)/2.6) - posfix
settings = {--CPU GRAPH CPU1
value=tonumber(conky_parse("${cpu cpu1}")),
value_max=100 ,
x=xp , y=yp ,
graph_radius=22 ,
graph_thickness=5 ,
graph_start_angle=180 ,
graph_unit_angle=2.7 , graph_unit_thickness=2.7 ,
graph_bg_colour=bgc , graph_bg_alpha=bga ,
graph_fg_colour=theme , graph_fg_alpha=fga ,
hand_fg_colour=theme , hand_fg_alpha=0.0 ,
txt_radius=35 ,
txt_weight=1 , txt_size=8.0 ,
txt_fg_colour=fgc , txt_fg_alpha=fga ,
graduation_radius=28 ,
graduation_thickness=0 , graduation_mark_thickness=1 ,
graduation_unit_angle=27 ,
graduation_fg_colour=theme , graduation_fg_alpha=0.3 ,
caption='CPU' ,
caption_weight=1 , caption_size=10.0 ,
caption_fg_colour=fgc , caption_fg_alpha=fga ,
};draw_gauge_ring(settings)
settings = {--CPU GRAPH CPU2
value=tonumber(conky_parse("${cpu cpu2}")) ,
value_max=100 ,
x=xp , y=yp ,
graph_radius=17 ,
graph_thickness=5 ,
graph_start_angle=180 ,
graph_unit_angle=2.7 , graph_unit_thickness=2.7 ,
graph_bg_colour=bgc , graph_bg_alpha=bga ,
graph_fg_colour=theme , graph_fg_alpha=fga ,
hand_fg_colour=theme , hand_fg_alpha=0.0 ,
txt_radius=0 ,
txt_weight=1 , txt_size=8.0 ,
txt_fg_colour=fgc , txt_fg_alpha=fga ,
graduation_radius=28 ,
graduation_thickness=0 , graduation_mark_thickness=1 ,
graduation_unit_angle=27 ,
graduation_fg_colour=theme , graduation_fg_alpha=0.3 ,
caption='' ,
caption_weight=1 , caption_size=10.0 ,
caption_fg_colour=fgc , caption_fg_alpha=fga ,
};draw_gauge_ring(settings)
xp = xp + hori_space
settings = {--MEMPERC GRAPH
value=tonumber(conky_parse("${memperc}")),
value_max=100 ,
x=xp , y=yp ,
graph_radius=22 ,
graph_thickness=5 ,
graph_start_angle=180 ,
graph_unit_angle=2.7 , graph_unit_thickness=2.7 ,
graph_bg_colour=bgc , graph_bg_alpha=bga ,
graph_fg_colour=theme , graph_fg_alpha=fga ,
hand_fg_colour=theme , hand_fg_alpha=0.0 ,
txt_radius=0 ,
txt_weight=1 , txt_size=8.0 ,
txt_fg_colour=fgc , txt_fg_alpha=fga ,
graduation_radius=22 ,
graduation_thickness=4 , graduation_mark_thickness=2 ,
graduation_unit_angle=27 ,
graduation_fg_colour=theme , graduation_fg_alpha=0.5 ,
caption='MEM' ,
caption_weight=1 , caption_size=10.0 ,
caption_fg_colour=fgc , caption_fg_alpha=fga ,
};draw_gauge_ring(settings)
xp = xp + hori_space
settings = {--SWAP FILESYSTEM USED GRAPH
value=tonumber(conky_parse("${swapperc}")),
value_max=100 ,
x=xp , y=yp ,
graph_radius=22 ,
graph_thickness=5 ,
graph_start_angle=180 ,
graph_unit_angle=2.7 , graph_unit_thickness=2.7 ,
graph_bg_colour=bgc , graph_bg_alpha=bga ,
graph_fg_colour=theme , graph_fg_alpha=fga ,
hand_fg_colour=theme , hand_fg_alpha=0.0 ,
txt_radius=0 ,
txt_weight=1 , txt_size=8.0 ,
txt_fg_colour=fgc , txt_fg_alpha=fga ,
graduation_radius=22 ,
graduation_thickness=4 , graduation_mark_thickness=2 ,
graduation_unit_angle=27 ,
graduation_fg_colour=theme , graduation_fg_alpha=0.5 ,
caption='SWAP' ,
caption_weight=1 , caption_size=10.0 ,
caption_fg_colour=fgc , caption_fg_alpha=fga ,
};draw_gauge_ring(settings)
xp = w/2 + 170
disks = {'/', '/home'}
disksLabel = {'ROOT', 'HOME'}
for i, partitions in ipairs(disks) do
settings = {--ROOT FILESYSTEM USED GRAPH
value=tonumber(conky_parse("${fs_used_perc " .. partitions .. "}")),
value_max=100 ,
x=xp , y=yp ,
graph_radius=22 ,
graph_thickness=5 ,
graph_start_angle=180 ,
graph_unit_angle=2.7 , graph_unit_thickness=2.7 ,
graph_bg_colour=bgc , graph_bg_alpha=bga ,
graph_fg_colour=theme , graph_fg_alpha=fga ,
hand_fg_colour=theme , hand_fg_alpha=0.0 ,
txt_radius=0 ,
txt_weight=1 , txt_size=8.0 ,
txt_fg_colour=fgc , txt_fg_alpha=fga ,
graduation_radius=23 ,
graduation_thickness=0 , graduation_mark_thickness=2 ,
graduation_unit_angle=27 ,
graduation_fg_colour=theme , graduation_fg_alpha=0.5 ,
caption=disksLabel[i] ,
caption_weight=1 , caption_size=10.0 ,
caption_fg_colour=fgc , caption_fg_alpha=fga ,
};draw_gauge_ring(settings)
end
xp = xp + hori_space
settings = {--NETWORK GRAPH DOWN
value=tonumber(conky_parse("${downspeedf wlan0}")),
value_max=100 ,
x=xp , y=yp ,
graph_radius=22 ,
graph_thickness=5 ,
graph_start_angle=180 ,
graph_unit_angle=2.7 , graph_unit_thickness=2.7 ,
graph_bg_colour=bgc , graph_bg_alpha=bga ,
graph_fg_colour=theme , graph_fg_alpha=fga ,
hand_fg_colour=theme , hand_fg_alpha=0.0 ,
txt_radius=35 ,
txt_weight=1 , txt_size=8.0 ,
txt_fg_colour=fgc , txt_fg_alpha=fga ,
graduation_radius=28 ,
graduation_thickness=0 , graduation_mark_thickness=1 ,
graduation_unit_angle=27 ,
graduation_fg_colour=theme , graduation_fg_alpha=0.3 ,
caption='NET' ,
caption_weight=1 , caption_size=10.0 ,
caption_fg_colour=fgc , caption_fg_alpha=fga ,
};draw_gauge_ring(settings)
settings = {--NETWORK GRAPH UP
value=tonumber(conky_parse("${upspeedf wlan0}")),
value_max=100 ,
x=xp , y=yp ,
graph_radius=17 ,
graph_thickness=5 ,
graph_start_angle=180 ,
graph_unit_angle=2.7 , graph_unit_thickness=2.7 ,
graph_bg_colour=bgc , graph_bg_alpha=bga ,
graph_fg_colour=theme , graph_fg_alpha=fga ,
hand_fg_colour=theme , hand_fg_alpha=0.0 ,
txt_radius=0 ,
txt_weight=1 , txt_size=8.0 ,
txt_fg_colour=fgc , txt_fg_alpha=fga ,
graduation_radius=28 ,
graduation_thickness=0 , graduation_mark_thickness=1 ,
graduation_unit_angle=27 ,
graduation_fg_colour=theme , graduation_fg_alpha=0.3 ,
caption='' ,
caption_weight=1 , caption_size=10.0 ,
caption_fg_colour=fgc , caption_fg_alpha=fga ,
};draw_gauge_ring(settings)
end-- if updates>5
cairo_destroy(cr)
cairo_surface_destroy(cs)
cr=nil
end-- end main function