awesome/lib/awful/widget/textclock.lua

53 lines
1.7 KiB
Lua

---------------------------------------------------------------------------
--- Text clock widget.
--
-- @author Julien Danjou <julien@danjou.info>
-- @copyright 2009 Julien Danjou
-- @release @AWESOME_VERSION@
-- @classmod awful.widget.textclock
---------------------------------------------------------------------------
local setmetatable = setmetatable
local os = os
local textbox = require("wibox.widget.textbox")
local timer = require("gears.timer")
local DateTime = require("lgi").GLib.DateTime
local textclock = { mt = {} }
--- This lowers the timeout so that it occurs "correctly". For example, a timeout
-- of 60 is rounded so that it occurs the next time the clock reads ":00 seconds".
local function calc_timeout(real_timeout)
return real_timeout - os.time() % real_timeout
end
--- Create a textclock widget. It draws the time it is in a textbox.
--
-- @param format The time format. Default is " %a %b %d, %H:%M ".
-- @param timeout How often update the time. Default is 60.
-- @return A textbox widget.
function textclock.new(format, timeout)
format = format or " %a %b %d, %H:%M "
timeout = timeout or 60
local w = textbox()
local t
function w._textclock_update_cb()
w:set_markup(DateTime.new_now_local():format(format))
t.timeout = calc_timeout(timeout)
t:again()
return true -- Continue the timer
end
t = timer.weak_start_new(timeout, w._textclock_update_cb)
t:emit_signal("timeout")
return w
end
function textclock.mt:__call(...)
return textclock.new(...)
end
return setmetatable(textclock, textclock.mt)
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