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[etc/awesome.git] / widgets / calendar.lua
1
2 --[[
3                                                   
4      Licensed under GNU General Public License v2 
5       * (c) 2013, Luke Bonham                     
6                                                   
7 --]]
8
9 local icons_dir    = require("lain.helpers").icons_dir
10
11 local awful        = require("awful")
12 local beautiful    = require("beautiful")
13 local naughty      = require("naughty")
14
15 local io           = io
16 local os           = { date = os.date }
17 local tonumber     = tonumber
18
19 local setmetatable = setmetatable
20
21 -- Calendar notification
22 -- lain.widgets.calendar
23 local calendar = {}
24 local cal_notification = nil
25
26 function calendar:hide()
27     if cal_notification ~= nil then
28         naughty.destroy(cal_notification)
29         cal_notification = nil
30     end
31 end
32
33 function calendar:show(t_out, inc_offset)
34     calendar:hide()
35
36     local offs = inc_offset or 0
37     local tims = t_out or 0
38     local f, c_text
39     local today = tonumber(os.date('%d'))
40     local init_t = '/usr/bin/cal | sed -r -e "s/(^| )( '
41
42     if offs == 0
43     then -- current month showing, today highlighted
44         if today >= 10
45         then
46            init_t = '/usr/bin/cal | sed -r -e "s/(^| )('
47         end
48
49         calendar.offset = 0
50         calendar.notify_icon = calendar.icons .. today .. ".png"
51
52         -- bg and fg inverted to highlight today
53         f = io.popen( init_t .. today ..
54                       ')($| )/\\1<b><span foreground=\\"'
55                       .. calendar.bg ..
56                       '\\" background=\\"'
57                       .. calendar.fg ..
58                       '\\">\\2<\\/span><\\/b>\\3/"' )
59
60     else -- no current month showing, no day to highlight
61        local month = tonumber(os.date('%m'))
62        local year = tonumber(os.date('%Y'))
63
64        calendar.offset = calendar.offset + offs
65        month = month + calendar.offset
66
67        if month > 12 then
68            month = month % 12
69            year = year + 1
70            if month <= 0 then
71                month = 12
72            end
73        elseif month < 1 then
74            month = month + 12
75            year = year - 1
76            if month <= 0 then
77                month = 1
78            end
79        end
80
81        calendar.notify_icon = nil
82
83        f = io.popen('/usr/bin/cal ' .. month .. ' ' .. year)
84     end
85
86     c_text = "<tt><span font='" .. calendar.font .. " "
87              .. calendar.font_size .. "'><b>"
88              .. f:read() .. "</b>\n\n"
89              .. f:read() .. "\n"
90              .. f:read("*all"):gsub("\n*$", "")
91              .. "</span></tt>"
92     f:close()
93
94     cal_notification = naughty.notify({
95         text = c_text,
96         icon = calendar.notify_icon,
97         position = calendar.position,
98         fg = calendar.fg,
99         bg = calendar.bg,
100         timeout = tims
101     })
102 end
103
104 function calendar:attach(widget, args)
105     local args = args or {}
106     calendar.icons     = args.icons or icons_dir .. "cal/white/"
107     calendar.font      = args.font or beautiful.font:sub(beautiful.font:find(""),
108                          beautiful.font:find(" "))
109     calendar.font_size = tonumber(args.font_size) or 11
110     calendar.fg        = args.fg or beautiful.fg_normal or "#FFFFFF"
111     calendar.bg        = args.bg or beautiful.bg_normal or "#FFFFFF"
112     calendar.position  = args.position or "top_right"
113
114     calendar.offset = 0
115     calendar.notify_icon = nil
116
117     widget:connect_signal("mouse::enter", function () calendar:show() end)
118     widget:connect_signal("mouse::leave", function () calendar:hide() end)
119     widget:buttons(awful.util.table.join( awful.button({ }, 1, function ()
120                                               calendar:show(0, -1) end),
121                                           awful.button({ }, 3, function ()
122                                               calendar:show(0, 1) end) ))
123 end
124
125 return setmetatable(calendar, { __call = function(_, ...) return create(...) end })