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ce2d346b1f5dbb9ede1d2be1cbb389709fc53435
[etc/awesome.git] / widget / calendar.lua
1
2 --[[
3                                                   
4      Licensed under GNU General Public License v2 
5       * (c) 2013, Luke Bonham                     
6                                                   
7 --]]
8
9 local helpers      = require("lain.helpers")
10 local markup       = require("lain.util.markup")
11 local awful        = require("awful")
12 local naughty      = require("naughty")
13 local mouse        = mouse
14 local os           = { date   = os.date }
15 local string       = { format = string.format,
16                        gsub   = string.gsub }
17 local ipairs       = ipairs
18 local tonumber     = tonumber
19 local setmetatable = setmetatable
20
21 -- Calendar notification
22 -- lain.widget.calendar
23 local calendar = { offset = 0 }
24
25 function calendar.hide()
26     if not calendar.notification then return end
27     naughty.destroy(calendar.notification)
28     calendar.notification = nil
29 end
30
31 function calendar.show(t_out, inc_offset, scr)
32     local f, offs = nil, inc_offset or 0
33
34     calendar.notification_preset.screen = scr or (calendar.followtag and awful.screen.focused()) or 1
35     calendar.offset = calendar.offset + offs
36
37     local current_month = (offs == 0 or calendar.offset == 0)
38
39     if current_month then -- today highlighted
40         calendar.offset = 0
41         calendar.icon = string.format("%s%s.png", calendar.icons, tonumber(os.date("%d")))
42         f = calendar.cal
43     else -- no current month showing, no day to highlight
44        local month = tonumber(os.date("%m"))
45        local year  = tonumber(os.date("%Y"))
46
47        month = month + calendar.offset
48
49        while month > 12 do
50            month = month - 12
51            year = year + 1
52        end
53
54        while month < 1 do
55            month = month + 12
56            year = year - 1
57        end
58
59        calendar.icon = nil
60        f = string.format("%s %s %s", calendar.cal, month, year)
61     end
62
63     helpers.async(f, function(ws)
64         local fg, bg = calendar.notification_preset.fg, calendar.notification_preset.bg
65         calendar.notification_preset.text = ws:gsub("%c%[%d+[m]?%s?%d+%c%[%d+[m]?",
66         markup.bold(markup.color(bg, fg, os.date("%e")))):gsub("\n*$", "")
67
68         local widget_focused = true
69
70         if t_out == 0 then
71             widget_focused = false
72             for i, widget in ipairs(calendar.attach_to) do
73                 for _,v in ipairs(mouse.current_widgets) do
74                     if widget == v then
75                         widget_focused = true
76                         break
77                     end
78                 end
79             end
80         end
81
82         if widget_focused then
83             calendar.hide()
84             calendar.notification = naughty.notify({
85                 preset  = calendar.notification_preset,
86                 icon    = calendar.icon,
87                 timeout = t_out or calendar.notification_preset.timeout or 5
88             })
89         end
90     end)
91 end
92
93 function calendar.attach(widget)
94     widget:connect_signal("mouse::enter", function () calendar.show(0) end)
95     widget:connect_signal("mouse::leave", function () calendar.hide() end)
96     widget:buttons(awful.util.table.join(awful.button({ }, 1, function () calendar.show(0, -1) end),
97                                          awful.button({ }, 3, function () calendar.show(0,  1) end),
98                                          awful.button({ }, 4, function () calendar.show(0, -1) end),
99                                          awful.button({ }, 5, function () calendar.show(0,  1) end)))
100 end
101
102 local function factory(args)
103     local args                   = args or {}
104     calendar.cal                 = args.cal or "/usr/bin/cal"
105     calendar.attach_to           = args.attach_to or {}
106     calendar.followtag           = args.followtag or false
107     calendar.icons               = args.icons or helpers.icons_dir .. "cal/white/"
108     calendar.notification_preset = args.notification_preset
109
110     if not calendar.notification_preset then
111         calendar.notification_preset = {
112             font = "Monospace 10",
113             fg   = "#FFFFFF",
114             bg   = "#000000"
115         }
116     end
117
118     for i, widget in ipairs(calendar.attach_to) do calendar.attach(widget) end
119 end
120
121 return setmetatable(calendar, { __call = function(_, ...) return factory(...) end })