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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 = calendar.cal .. ' | sed -r -e "s/(^| )( '
41
42     calendar.offset = calendar.offset + offs
43
44     if offs == 0 or calendar.offset == 0
45     then -- current month showing, today highlighted
46         if today >= 10
47         then
48            init_t = calendar.cal .. ' | sed -r -e "s/_\\x08//g" | sed -r -e "s/(^| )('
49         end
50
51         calendar.offset = 0
52         calendar.notify_icon = calendar.icons .. today .. ".png"
53
54         -- bg and fg inverted to highlight today
55         f = io.popen( init_t .. today ..
56                       ')($| )/\\1<b><span foreground=\\"'
57                       .. calendar.bg ..
58                       '\\" background=\\"'
59                       .. calendar.fg ..
60                       '\\">\\2<\\/span><\\/b>\\3/"' )
61
62     else -- no current month showing, no day to highlight
63        local month = tonumber(os.date('%m'))
64        local year = tonumber(os.date('%Y'))
65
66        month = month + calendar.offset
67
68        if month > 12 then
69            month = month % 12
70            year = year + 1
71            if month <= 0 then
72                month = 12
73            end
74        elseif month < 1 then
75            month = month + 12
76            year = year - 1
77            if month <= 0 then
78                month = 1
79            end
80        end
81
82        calendar.notify_icon = nil
83
84        f = io.popen(calendar.cal .. ' ' .. month .. ' ' .. year)
85     end
86
87     c_text = "<tt><span font='" .. calendar.font .. " "
88              .. calendar.font_size .. "'><b>"
89              .. f:read() .. "</b>\n\n"
90              .. f:read() .. "\n"
91              .. f:read("*a"):gsub("\n*$", "")
92              .. "</span></tt>"
93     f:close()
94
95     cal_notification = naughty.notify({
96         text = c_text,
97         icon = calendar.notify_icon,
98         position = calendar.position,
99         fg = calendar.fg,
100         bg = calendar.bg,
101         timeout = tims,
102         screen = client.focus and client.focus.screen or 1
103     })
104 end
105
106 function calendar:attach(widget, args)
107     local args = args or {}
108     calendar.cal       = args.cal or "/usr/bin/cal"
109     calendar.icons     = args.icons or icons_dir .. "cal/white/"
110     calendar.font      = args.font or beautiful.font:sub(beautiful.font:find(""),
111                          beautiful.font:find(" "))
112     calendar.font_size = tonumber(args.font_size) or 11
113     calendar.fg        = args.fg or beautiful.fg_normal or "#FFFFFF"
114     calendar.bg        = args.bg or beautiful.bg_normal or "#FFFFFF"
115     calendar.position  = args.position or "top_right"
116
117     calendar.offset = 0
118     calendar.notify_icon = nil
119
120     widget:connect_signal("mouse::enter", function () calendar:show() end)
121     widget:connect_signal("mouse::leave", function () calendar:hide() end)
122     widget:buttons(awful.util.table.join( awful.button({ }, 1, function ()
123                                               calendar:show(0, -1) end),
124                                           awful.button({ }, 3, function ()
125                                               calendar:show(0, 1) end),
126                                           awful.button({ }, 4, function ()
127                                               calendar:show(0, -1) end),
128                                           awful.button({ }, 5, function ()
129                                               calendar:show(0, 1) end)))
130 end
131
132 return setmetatable(calendar, { __call = function(_, ...) return create(...) end })