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weather: #186
[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           = { popen = io.popen }
16 local os           = { date = os.date }
17 local mouse        = mouse
18 local string       = { format = string.format,
19                        sub    = string.sub,
20                        gsub   = string.gsub }
21 local tonumber     = tonumber
22
23 local setmetatable = setmetatable
24
25 -- Calendar notification
26 -- lain.widgets.calendar
27 local calendar = {}
28 local cal_notification = nil
29
30 function calendar:hide()
31     if cal_notification ~= nil then
32         naughty.destroy(cal_notification)
33         cal_notification = nil
34     end
35 end
36
37 function calendar:show(t_out, inc_offset, scr)
38     calendar:hide()
39
40     local f, c_text
41     local offs  = inc_offset or 0
42     local tims  = t_out or 0
43     local today = tonumber(os.date('%d'))
44
45     calendar.offset = calendar.offset + offs
46
47     if offs == 0 or calendar.offset == 0
48     then -- current month showing, today highlighted
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(string.format("%s | sed -r -e 's/_\\x08//g' -e '0,/(^| )%d($| )/ s/(^| )%d($| )/\\1<b><span foreground=\"%s\" background=\"%s\">%d<\\/span><\\/b>\\2/'",
54                      calendar.cal, today, today, calendar.bg, calendar.fg, today))
55
56     else -- no current month showing, no day to highlight
57        local month = tonumber(os.date('%m'))
58        local year = tonumber(os.date('%Y'))
59
60        month = month + calendar.offset
61
62        while month > 12 do
63            month = month - 12
64            year = year + 1
65        end
66
67        while month < 1 do
68            month = month + 12
69            year = year - 1
70        end
71
72        calendar.notify_icon = nil
73        f = io.popen(string.format('%s %s %s', calendar.cal, month, year))
74     end
75
76     c_text = "<tt><span font='" .. calendar.font .. " "
77              .. calendar.font_size .. "'><b>"
78              .. f:read() .. "</b>\n\n"
79              .. f:read() .. "\n"
80              .. f:read("*all"):gsub("\n*$", "")
81              .. "</span></tt>"
82     f:close()
83
84     if calendar.followmouse then
85         scrp = mouse.screen
86     else
87         scrp = scr or calendar.scr_pos
88     end
89
90     cal_notification = naughty.notify({
91         text = c_text,
92         icon = calendar.notify_icon,
93         position = calendar.position,
94         fg = calendar.fg,
95         bg = calendar.bg,
96         timeout = tims,
97         screen = scrp
98     })
99 end
100
101 function calendar:attach(widget, args)
102     local args = args or {}
103
104     calendar.cal         = args.cal or "/usr/bin/cal"
105     calendar.icons       = args.icons or icons_dir .. "cal/white/"
106     calendar.font        = args.font or beautiful.font:gsub(" %d.*", "")
107     calendar.font_size   = tonumber(args.font_size) or 11
108     calendar.fg          = args.fg or beautiful.fg_normal or "#FFFFFF"
109     calendar.bg          = args.bg or beautiful.bg_normal or "#000000"
110     calendar.position    = args.position or "top_right"
111     calendar.scr_pos     = args.scr_pos or 1
112     calendar.followmouse = args.followmouse or false
113
114     calendar.fg = string.sub(calendar.fg, 1, 7)
115     calendar.bg = string.sub(calendar.bg, 1, 7)
116
117     calendar.offset      = 0
118     calendar.notify_icon = nil
119
120     widget:connect_signal("mouse::enter", function () calendar:show(0, 0, calendar.scr_pos) 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, calendar.scr_pos) end),
124                                          awful.button({ }, 3, function ()
125                                              calendar:show(0, 1, calendar.scr_pos) end),
126                                          awful.button({ }, 4, function ()
127                                              calendar:show(0, -1, calendar.scr_pos) end),
128                                          awful.button({ }, 5, function ()
129                                              calendar:show(0, 1, calendar.scr_pos) end)))
130 end
131
132 return setmetatable(calendar, { __call = function(_, ...) return create(...) end })