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revert #9; discouraging #21 and #22 situations
[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     -- let's take font only, font size is set in calendar table
42     local font = beautiful.font:sub(beautiful.font:find(""),
43                  beautiful.font:find(" "))
44
45     if offs == 0
46     then -- current month showing, today highlighted
47         if today >= 10
48         then
49            init_t = '/usr/bin/cal | sed -r -e "s/(^| )('
50         end
51
52         calendar.offset = 0
53         calendar.notify_icon = calendar.icons .. today .. ".png"
54
55         -- bg and fg inverted to highlight today
56         f = io.popen( init_t .. today ..
57                       ')($| )/\\1<b><span foreground=\\"'
58                       .. calendar.bg ..
59                       '\\" background=\\"'
60                       .. calendar.fg ..
61                       '\\">\\2<\\/span><\\/b>\\3/"' )
62
63     else -- no current month showing, no day to highlight
64        local month = tonumber(os.date('%m'))
65        local year = tonumber(os.date('%Y'))
66
67        calendar.offset = calendar.offset + offs
68        month = month + calendar.offset
69
70        if month > 12 then
71            month = month % 12
72            year = year + 1
73            if month <= 0 then
74                month = 12
75            end
76        elseif month < 1 then
77            month = month + 12
78            year = year - 1
79            if month <= 0 then
80                month = 1
81            end
82        end
83
84        calendar.notify_icon = nil
85
86        f = io.popen('/usr/bin/cal ' .. month .. ' ' .. year)
87     end
88
89     c_text = "<tt><span font='" .. font .. " "
90              .. calendar.font_size .. "'><b>"
91              .. f:read() .. "</b>\n\n"
92              .. f:read() .. "\n"
93              .. f:read("*all"):gsub("\n*$", "")
94              .. "</span></tt>"
95     f:close()
96
97     cal_notification = naughty.notify({ text = c_text,
98                                         icon = calendar.notify_icon,
99                                         position = calendar.position,
100                                         fg = calendar.fg,
101                                         bg = calendar.bg,
102                                         timeout = tims })
103 end
104
105 function calendar:attach(widget, args)
106     local args = args or {}
107     calendar.icons = args.icons or icons_dir .. "cal/white/"
108     calendar.font_size = tonumber(args.font_size) or 11
109     calendar.fg = args.fg or beautiful.fg_normal or "#FFFFFF"
110     calendar.bg = args.bg or beautiful.bg_normal or "#FFFFFF"
111     calendar.position = args.position or "top_right"
112
113     calendar.offset = 0
114     calendar.notify_icon = nil
115
116     widget:connect_signal("mouse::enter", function () calendar:show() end)
117     widget:connect_signal("mouse::leave", function () calendar:hide() end)
118     widget:buttons(awful.util.table.join( awful.button({ }, 1, function ()
119                                               calendar:show(0, -1) end),
120                                           awful.button({ }, 3, function ()
121                                               calendar:show(0, 1) end) ))
122 end
123
124 return setmetatable(calendar, { __call = function(_, ...) return create(...) end })