lain/widget/cal.lua

177 lines
7.0 KiB
Lua

--[[
Licensed under GNU General Public License v2
* (c) 2018, Luca CPZ
--]]
local helpers = require("lain.helpers")
local markup = require("lain.util.markup")
local awful = require("awful")
local naughty = require("naughty")
local floor = math.floor
local os = os
local pairs = pairs
local string = string
local tconcat = table.concat
local type = type
local tonumber = tonumber
local tostring = tostring
-- Calendar notification
-- lain.widget.cal
local function factory(args)
args = args or {}
local cal = {
attach_to = args.attach_to or {},
week_start = args.week_start or 2,
three = args.three or false,
followtag = args.followtag or false,
week_number = args.week_number or "none",
week_number_format = args.week_number_format or args.week_number == "left" and "%3d | " or "| %-3d",
icons = args.icons or helpers.icons_dir .. "cal/white/",
notification_preset = args.notification_preset or {
font = "Monospace 10", fg = "#FFFFFF", bg = "#000000"
}
}
function cal.get_week_number(m, st_day, x)
return string.format(cal.week_number_format, os.date("%V", m) + (x ~= 0 and floor((x + st_day) / 7) - 1 or 0))
end
function cal.sum_week_days(x, y)
return (x + y) % 7
end
function cal.build(month, year)
local current_month, current_year = tonumber(os.date("%m")), tonumber(os.date("%Y"))
local is_current_month = (not month or not year) or (month == current_month and year == current_year)
local today = is_current_month and tonumber(os.date("%d")) -- otherwise nil and not highlighted
local t = os.time { year = year or current_year, month = month and month+1 or current_month+1, day = 0 }
local d = os.date("*t", t)
local mth_days, st_day, this_month = d.day, (d.wday-d.day-cal.week_start+1)%7, os.date("%B %Y", t)
local notifytable = { [1] = string.format("%s%s\n", string.rep(" ", floor((28 - this_month:len())/2)), markup.bold(this_month)) }
for x = 0,6 do notifytable[#notifytable+1] = os.date("%a", os.time { year=2006, month=1, day=x+cal.week_start }):sub(1, 3) .. " " end
notifytable[#notifytable] = string.format("%s\n%s", notifytable[#notifytable]:sub(1, -2), string.rep(" ", st_day*4))
local strx
for x = 1,mth_days do
strx = x
if x == today then
if x < 10 then x = " " .. x end
strx = markup.bold(markup.color(cal.notification_preset.bg, cal.notification_preset.fg, x) .. " ")
end
strx = string.format("%s%s", string.rep(" ", 3 - tostring(x):len()), strx)
notifytable[#notifytable+1] = string.format("%-4s%s", strx, (x+st_day)%7==0 and x ~= mth_days and "\n" or "")
end
if string.len(cal.icons or "") > 0 and today then cal.icon = cal.icons .. today .. ".png" end
cal.month, cal.year = d.month, d.year
if cal.week_number ~= "none" then
local m = os.time { year = year or current_year, month = month and month or current_month, day = 0 }
local head_prepend = string.rep(" ", tostring(string.format(cal.week_number_format, 0)):len())
if cal.week_number == "left" then
notifytable[1] = head_prepend .. notifytable[1] -- month-year row
notifytable[2] = head_prepend .. notifytable[2] -- weekdays row
notifytable[8] = notifytable[8]:gsub("\n", "\n" .. cal.get_week_number(m, st_day, 0)) -- first week of the month
for x = 10,#notifytable do
if cal.sum_week_days(st_day, x) == 2 then
notifytable[x] = cal.get_week_number(m, st_day, x) .. notifytable[x]
end
end
elseif cal.week_number == "right" then
notifytable[8] = notifytable[8]:gsub("\n", head_prepend .. "\n") -- weekdays row
for x = 9,#notifytable do
if cal.sum_week_days(st_day, x) == 1 then
notifytable[x] = notifytable[x]:gsub("\n", cal.get_week_number(m, st_day, x - 7) .. "\n")
end
end
-- last week of the month
local end_days = cal.sum_week_days(st_day, mth_days)
if end_days ~= 0 then end_days = 7 - end_days end
notifytable[#notifytable] = notifytable[#notifytable] .. string.rep(" ", 4 * end_days) .. cal.get_week_number(m, st_day, mth_days + end_days)
end
end
return notifytable
end
function cal.getdate(month, year, offset)
if not month or not year then
month = tonumber(os.date("%m"))
year = tonumber(os.date("%Y"))
end
month = month + offset
while month > 12 do
month = month - 12
year = year + 1
end
while month < 1 do
month = month + 12
year = year - 1
end
return month, year
end
function cal.hide()
if not cal.notification then return end
naughty.destroy(cal.notification)
cal.notification = nil
end
function cal.show(seconds, month, year, scr)
local text = tconcat(cal.build(month, year))
if cal.three then
local current_month, current_year = cal.month, cal.year
local prev_month, prev_year = cal.getdate(cal.month, cal.year, -1)
local next_month, next_year = cal.getdate(cal.month, cal.year, 1)
text = string.format("%s\n\n%s\n\n%s",
tconcat(cal.build(prev_month, prev_year)), text,
tconcat(cal.build(next_month, next_year)))
cal.month, cal.year = current_month, current_year
end
cal.hide()
cal.notification = naughty.notify {
preset = cal.notification_preset,
screen = cal.followtag and awful.screen.focused() or scr or 1,
icon = cal.icon,
timeout = type(seconds) == "number" and seconds or cal.notification_preset.timeout or 5,
text = text
}
end
function cal.hover_on() cal.show(0) end
function cal.move(offset)
local offset = offset or 0
cal.month, cal.year = cal.getdate(cal.month, cal.year, offset)
cal.show(0, cal.month, cal.year)
end
function cal.prev() cal.move(-1) end
function cal.next() cal.move( 1) end
function cal.attach(widget)
widget:connect_signal("mouse::enter", cal.hover_on)
widget:connect_signal("mouse::leave", cal.hide)
widget:buttons(awful.util.table.join(
awful.button({}, 1, cal.prev),
awful.button({}, 3, cal.next),
awful.button({}, 2, cal.hover_on),
awful.button({}, 5, cal.prev),
awful.button({}, 4, cal.next)))
end
for _, widget in pairs(cal.attach_to) do cal.attach(widget) end
return cal
end
return factory