Londonali1010 rings.module (en)

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londonali1010_rings.module

User:DK75

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londonali1010 rings for One4All project

Londonali1010 rings.png

Londonali1010 rings.module-1.2.2.tar.gz

--[[
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:
+ v1.2.2 -- Converted to one4all module by dk75 (03.2012)
+ 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)
]]

local modname = ...
local M = {}
_G[modname] = M
package.loaded[modname] = M



--[[
###############################################################################
###                              SETTINGS                                   ###
###############################################################################
--]]
local 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'.
		-- If you set it to nil value then base ring only will be drawn.
		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=0xffffff,
		-- "bg_alpha" is the alpha value of the base ring.
		bg_alpha=0.1,
		-- "fg_colour" is the colour of the indicator part of the ring.
		fg_colour=0xffffff,
		-- "fg_alpha" is the alpha value of the indicator part of the ring.
		fg_alpha=0.2,
		-- "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=165, y=170,
		-- "radius" is the radius of the ring.
		radius=50,
		-- "thickness" is the thickness of the ring, centred around the radius.
		thickness=5,
		-- "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,
		-- "counter_clockwise" is the direction of ring arc - if set to TRUE then ring will be drawn counter-clockwise.
		counter_clockwise=FALSE,
	},
	{
		name='time',
		arg='%M.%S',
		max=60,
		bg_colour=0xffffff,
		bg_alpha=0.1,
		fg_colour=0xffffff,
		fg_alpha=0.4,
		x=165, y=170,
		radius=56,
		thickness=5,
		start_angle=0,
		end_angle=360,
		counter_clockwise=FALSE,
	},
	{
		name='time',
		arg='%S',
		max=60,
		bg_colour=0xffffff,
		bg_alpha=0.1,
		fg_colour=0xffffff,
		fg_alpha=0.6,
		x=165, y=170,
		radius=62,
		thickness=5,
		start_angle=0,
		end_angle=360,
		counter_clockwise=FALSE,
	},
	{
		name='cpu',
		arg='cpu1',
		max=100,
		bg_colour=0xffffff,
		bg_alpha=0,
		fg_colour=0xffffff,
		fg_alpha=0.1,
		x=165, y=170,
		radius=70,
		thickness=5,
		start_angle=60,
		end_angle=120,
		counter_clockwise=FALSE,
	},
	{
		name='cpu',
		arg='cpu2',
		max=100,
		bg_colour=0xffffff,
		bg_alpha=0,
		fg_colour=0xffffff,
		fg_alpha=0.1,
		x=165, y=170,
		radius=76,
		thickness=5,
		start_angle=60,
		end_angle=120,
		counter_clockwise=FALSE,
	},
	{
		name='cpu',
		arg='cpu0',
		max=100,
		bg_colour=0xffffff,
		bg_alpha=0.1,
		fg_colour=0xffffff,
		fg_alpha=0.4,
		x=165, y=170,
		radius=84.5,
		thickness=8,
		start_angle=60,
		end_angle=120,
		counter_clockwise=FALSE,
	},
	{
		name='battery_percent',
		arg='BAT0',
		max=100,
		bg_colour=0xffffff,
		bg_alpha=0.1,
		fg_colour=0xffffff,
		fg_alpha=0.6,
		x=165, y=170,
		radius=72,
		thickness=11,
		start_angle=122,
		end_angle=210,
		counter_clockwise=FALSE,
	},
	{
		name='memperc',
		arg=,
		max=100,
		bg_colour=0xffffff,
		bg_alpha=0.1,
		fg_colour=0xffffff,
		fg_alpha=0.8,
		x=165, y=170,
		radius=83.5,
		thickness=8,
		start_angle=122,
		end_angle=210,
		counter_clockwise=FALSE,
	},
	{
		name='time',
		arg='%d',
		max=31,
		bg_colour=0xffffff,
		bg_alpha=0.1,
		fg_colour=0xffffff,
		fg_alpha=0.8,
		x=165, y=170,
		radius=70,
		thickness=5,
		start_angle=212,
		end_angle=360,
		counter_clockwise=FALSE,
	},
	{
		name='time',
		arg='%m',
		max=12,
		bg_colour=0xffffff,
		bg_alpha=0.1,
		fg_colour=0xffffff,
		fg_alpha=0.8,
		x=165, y=170,
		radius=76,
		thickness=5,
		start_angle=212,
		end_angle=360,
		counter_clockwise=FALSE,
	},
	{
		name='fs_used_perc',
		arg='/',
		max=100,
		bg_colour=0xffffff,
		bg_alpha=0.2,
		fg_colour=0xffffff,
		fg_alpha=0.4,
		x=165, y=170,
		radius=108,
		thickness=3,
		start_angle=-120,
		end_angle=120,
		counter_clockwise=FALSE,
	},
	{
		name='fs_used_perc',
		arg='/home',
		max=100,
		bg_colour=0xffffff,
		bg_alpha=0.2,
		fg_colour=0xffffff,
		fg_alpha=0.3,
		x=165, y=170,
		radius=135,
		thickness=50,
		start_angle=-120,
		end_angle=120,
		counter_clockwise=FALSE,
	},
	{
		name=nil,
		arg=,
		max=100,
		bg_colour=0xffffff,
		bg_alpha=0.2,
		fg_colour=0xffffff,
		fg_alpha=0.4,
		x=165, y=170,
		radius=108,
		thickness=3,
		start_angle=121,
		end_angle=239,
		counter_clockwise=FALSE,
	},
}
--[[
###############################################################################
###                           END OF SETTINGS                               ###
###############################################################################
--]]
 

 
function M.draw_ring(t,pt)
	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,one4all_cairo.rgb2rgba(bgc,bga))
	cairo_set_line_width(cr,ring_w)
	cairo_stroke(cr)
 
	-- Draw indicator ring

	if pt.counter_clockwise then
		cairo_arc_negative(cr,xc,yc,ring_r,angle_0,angle_0+t_arc)
	else
		cairo_arc(cr,xc,yc,ring_r,angle_0,angle_0+t_arc)
	end
	cairo_set_source_rgba(cr,one4all_cairo.rgb2rgba(fgc,fga))
	cairo_stroke(cr)		
end
 


--[[
###############################################################################
###                            MODULE MAIN LOOP                             ###
###############################################################################
--]]
function M.main()
	local function setup_rings(pt)
		local str=
		local value=0
 
		if pt['name'] then
			str=string.format('${%s %s}',pt['name'],pt['arg'])
			str=conky_parse(str)
		end
 
		value=tonumber(str)
		if value == nil then value = 0 end
		pct=value/pt['max']
 
		M.draw_ring(pct,pt)
	end
 
	for i in pairs(settings_table) do
		setup_rings(settings_table[i])
	end
end
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