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conky_HUD_blue.lua
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conky_HUD_blue.lua
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--==============================================================================
-- conky_HUD.lua
--
-- author : SLK
-- version : v2011011601
-- license : Distributed under the terms of GNU GPL version 2 or later
--
--==============================================================================
require 'cairo'
--------------------------------------------------------------------------------
-- gauge DATA
gauge = {
{
name='cpu', arg='cpu0', max_value=100,
x=180, y=120,
graph_radius=50,
graph_thickness=5,
graph_start_angle=0,
graph_unit_angle=0.9, graph_unit_thickness=0.9,
graph_bg_colour=0x00C4FF, graph_bg_alpha=0.3,
graph_fg_colour=0x00C4FF, graph_fg_alpha=0.0,
hand_fg_colour=0x00C4FF, hand_fg_alpha=1.0,
txt_radius=40,
txt_weight=1, txt_size=10.0,
txt_fg_colour=0x00C4FF, txt_fg_alpha=0.8,
graduation_radius=30,
graduation_thickness=0, graduation_mark_thickness=1,
graduation_unit_angle=27,
graduation_fg_colour=0x00C4FF, graduation_fg_alpha=0.3,
caption='',
caption_weight=1, caption_size=8.0,
caption_fg_colour=0xFFFFFF, caption_fg_alpha=0.3,
},
{
name='cpu', arg='cpu1', max_value=100,
x=180, y=120,
graph_radius=60,
graph_thickness=5,
graph_start_angle=0,
graph_unit_angle=0.9, graph_unit_thickness=0.9,
graph_bg_colour=0x00C4FF, graph_bg_alpha=0.3,
graph_fg_colour=0x00C4FF, graph_fg_alpha=0.0,
hand_fg_colour=0x00C4FF, hand_fg_alpha=1.0,
txt_radius=70,
txt_weight=1, txt_size=10.0,
txt_fg_colour=0x00C4FF, txt_fg_alpha=0.8,
graduation_radius=55,
graduation_thickness=5, graduation_mark_thickness=2,
graduation_unit_angle=27,
graduation_fg_colour=0x00C4FF, graduation_fg_alpha=0.3,
caption='',
caption_weight=1, caption_size=8.0,
caption_fg_colour=0xFFFFFF, caption_fg_alpha=0.3,
},
{
name='memperc', arg='', max_value=100,
x=40, y=85,
graph_radius=34,
graph_thickness=5,
graph_start_angle=180,
graph_unit_angle=2, graph_unit_thickness=2,
graph_bg_colour=0x00C4FF, graph_bg_alpha=0.3,
graph_fg_colour=0x00C4FF, graph_fg_alpha=0.0,
hand_fg_colour=0x00C4FF, hand_fg_alpha=1.0,
txt_radius=20,
txt_weight=1, txt_size=10.0,
txt_fg_colour=0x00C4FF, txt_fg_alpha=0.8,
graduation_radius=24,
graduation_thickness=6, graduation_mark_thickness=2,
graduation_unit_angle=10,
graduation_fg_colour=0x00C4FF, graduation_fg_alpha=0.3,
caption='',
caption_weight=1, caption_size=10.0,
caption_fg_colour=0xFFFFFF, caption_fg_alpha=0.5,
},
{
name='fs_used_perc', arg='/', max_value=100,
x=120, y=70,
graph_radius=40,
graph_thickness=4,
graph_start_angle=210,
graph_unit_angle=2, graph_unit_thickness=2,
graph_bg_colour=0x00C4FF, graph_bg_alpha=0.3,
graph_fg_colour=0x00C4FF, graph_fg_alpha=0.0,
hand_fg_colour=0x00C4FF, hand_fg_alpha=1.0,
txt_radius=32,
txt_weight=1, txt_size=10.0,
txt_fg_colour=0x00C4FF, txt_fg_alpha=0.8,
graduation_radius=46,
graduation_thickness=0, graduation_mark_thickness=2,
graduation_unit_angle=20,
graduation_fg_colour=0x00C4FF, graduation_fg_alpha=0.3,
caption='',
caption_weight=1, caption_size=8.0,
caption_fg_colour=0xFFFFFF, caption_fg_alpha=0.5,
},
{
name='fs_used_perc', arg='/home/', max_value=100,
x=120, y=70,
graph_radius=50,
graph_thickness=8,
graph_start_angle=210,
graph_unit_angle=2, graph_unit_thickness=2,
graph_bg_colour=0x00C4FF, graph_bg_alpha=0.3,
graph_fg_colour=0x00C4FF, graph_fg_alpha=0.0,
hand_fg_colour=0x00C4FF, hand_fg_alpha=1.0,
txt_radius=60,
txt_weight=1, txt_size=10.0,
txt_fg_colour=0x00C4FF, txt_fg_alpha=0.8,
graduation_radius=58,
graduation_thickness=4, graduation_mark_thickness=2,
graduation_unit_angle=20,
graduation_fg_colour=0x00C4FF, graduation_fg_alpha=0.3,
caption='',
caption_weight=1, caption_size=8.0,
caption_fg_colour=0xFFFFFF, caption_fg_alpha=0.5,
},
}
-------------------------------------------------------------------------------
-- rgb_to_r_g_b
-- converts color in hexa to decimal
--
function rgb_to_r_g_b(colour, alpha)
return ((colour / 0x10000) % 0x100) / 255., ((colour / 0x100) % 0x100) / 255., (colour % 0x100) / 255., alpha
end
-------------------------------------------------------------------------------
-- angle_to_position
-- convert degree to rad and rotate (0 degree is top/north)
--
function angle_to_position(start_angle, current_angle)
local pos = current_angle + start_angle
return ( ( pos * (2 * math.pi / 360) ) - (math.pi / 2) )
end
-------------------------------------------------------------------------------
-- draw_gauge_ring
-- displays gauges
--
function draw_gauge_ring(display, data, value)
local max_value = data['max_value']
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 = (max_value * graph_unit_angle) % 360
-- background ring
cairo_arc(display, x, y, graph_radius, angle_to_position(graph_start_angle, 0), angle_to_position(graph_start_angle, graph_end_angle))
cairo_set_source_rgba(display, rgb_to_r_g_b(graph_bg_colour, graph_bg_alpha))
cairo_set_line_width(display, graph_thickness)
cairo_stroke(display)
-- arc of value
if value == nil then value = 0 end
local val = value % (max_value + 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(display, x, y, graph_radius, angle_to_position(graph_start_angle, start_arc), angle_to_position(graph_start_angle, stop_arc))
cairo_set_source_rgba(display, rgb_to_r_g_b(graph_fg_colour, graph_fg_alpha))
cairo_stroke(display)
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(display, x, y, graph_radius, angle_to_position(graph_start_angle, start_arc), angle_to_position(graph_start_angle, stop_arc))
cairo_set_source_rgba(display, rgb_to_r_g_b(hand_fg_colour, hand_fg_alpha))
cairo_stroke(display)
-- 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(display, graduation_thickness)
start_arc = (graduation_unit_angle * i) - (graduation_mark_thickness / 2)
stop_arc = (graduation_unit_angle * i) + (graduation_mark_thickness / 2)
cairo_arc(display, x, y, graduation_radius, angle_to_position(graph_start_angle, start_arc), angle_to_position(graph_start_angle, stop_arc))
cairo_set_source_rgba(display,rgb_to_r_g_b(graduation_fg_colour,graduation_fg_alpha))
cairo_stroke(display)
cairo_set_line_width(display, 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 (display, "ubuntu", CAIRO_FONT_SLANT_NORMAL, txt_weight)
cairo_set_font_size (display, txt_size)
cairo_set_source_rgba (display, rgb_to_r_g_b(txt_fg_colour, txt_fg_alpha))
cairo_move_to (display, x + movex - (txt_size / 2), y + movey + 3)
cairo_show_text (display, value)
cairo_stroke (display)
-- 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 (display, "ubuntu", CAIRO_FONT_SLANT_NORMAL, caption_weight);
cairo_set_font_size (display, caption_size)
cairo_set_source_rgba (display, rgb_to_r_g_b(caption_fg_colour, caption_fg_alpha))
cairo_move_to (display, x + tox + 5, y + toy + 1)
-- bad hack but not enough time !
if graph_start_angle < 105 then
cairo_move_to (display, x + tox - 30, y + toy + 1)
end
cairo_show_text (display, caption)
cairo_stroke (display)
end
-------------------------------------------------------------------------------
-- go_gauge_rings
-- loads data and displays gauges
--
function go_gauge_rings(display)
local function load_gauge_rings(display, data)
local str, value = '', 0
str = string.format('${%s %s}',data['name'], data['arg'])
str = conky_parse(str)
value = tonumber(str)
draw_gauge_ring(display, data, value)
end
for i in pairs(gauge) do
load_gauge_rings(display, gauge[i])
end
end
-------------------------------------------------------------------------------
-- MAIN
function conky_main()
if conky_window == nil then
return
end
local cs = cairo_xlib_surface_create(conky_window.display, conky_window.drawable, conky_window.visual, conky_window.width, conky_window.height)
local display = cairo_create(cs)
local updates = conky_parse('${updates}')
update_num = tonumber(updates)
if update_num > 5 then
go_gauge_rings(display)
end
end