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lain is now as asynchronous as possible
[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 async        = require("lain.helpers").async
10 local icons_dir    = require("lain.helpers").icons_dir
11 local markup       = require("lain.util.markup")
12 local awful        = require("awful")
13 local naughty      = require("naughty")
14 local os           = { date   = os.date }
15 local string       = { format = string.format,
16                        gsub   = string.gsub }
17 local tonumber     = tonumber
18
19 -- Calendar notification
20 -- lain.widgets.calendar
21 local calendar = { offset = 0 }
22
23 function calendar.hide()
24     if not calendar.notification then return end
25     naughty.destroy(calendar.notification)
26     calendar.notification = nil
27 end
28
29 function calendar.show(t_out, inc_offset, scr)
30     calendar.hide()
31
32     local today = os.date("%d")
33     local offs = inc_offset or 0
34     local f
35
36     calendar.offset = calendar.offset + offs
37
38     local current_month = (offs == 0 or calendar.offset == 0)
39
40     if current_month then -- today highlighted
41         calendar.offset = 0
42         calendar.notify_icon = string.format("%s%s.png", calendar.icons, today)
43         f = calendar.cal
44     else -- no current month showing, no day to highlight
45        local month = tonumber(os.date("%m"))
46        local year  = tonumber(os.date("%Y"))
47
48        month = month + calendar.offset
49
50        while month > 12 do
51            month = month - 12
52            year = year + 1
53        end
54
55        while month < 1 do
56            month = month + 12
57            year = year - 1
58        end
59
60        calendar.notify_icon = nil
61        f = string.format("%s %s %s", calendar.cal, month, year)
62     end
63
64     if calendar.followtag then
65         calendar.notification_preset.screen = awful.screen.focused()
66     else
67         calendar.notification_preset.screen = src or 1
68     end
69
70     async(f, function(ws)
71         fg, bg = calendar.notification_preset.fg, calendar.notification_preset.bg
72         ws = ws:gsub("%c%[7m%d+%c%[27m", markup.bold(markup.color(bg, fg, today)))
73         calendar.notification = naughty.notify({
74             preset  = calendar.notification_preset,
75             text    = ws:gsub("\n*$", ""),
76             icon    = calendar.notify_icon,
77             timeout = t_out or calendar.notification.preset.timeout or 5
78         })
79     end)
80 end
81
82 function calendar.attach(widget, args)
83     local args                   = args or {}
84     calendar.cal                 = args.cal or "/usr/bin/cal --color=always"
85     calendar.followtag           = args.followtag or false
86     calendar.icons               = args.icons or icons_dir .. "cal/white/"
87     calendar.notification_preset = args.notification_preset
88
89     if not calendar.notification_preset then
90         calendar.notification_preset      = naughty.config.defaults
91         calendar.notification_preset.font = "Monospace 10"
92         calendar.notification_preset.fg   = "#FFFFFF"
93         calendar.notification_preset.bg   = "#000000"
94     end
95
96     if widget then
97         widget:connect_signal("mouse::enter", function () calendar.show(0) end)
98         widget:connect_signal("mouse::leave", function () calendar.hide() end)
99         widget:buttons(awful.util.table.join(awful.button({ }, 1, function ()
100                                                  calendar.show(0, -1, calendar.scr_pos) end),
101                                              awful.button({ }, 3, function ()
102                                                  calendar.show(0, 1, calendar.scr_pos) end),
103                                              awful.button({ }, 4, function ()
104                                                  calendar.show(0, -1, calendar.scr_pos) end),
105                                              awful.button({ }, 5, function ()
106                                                  calendar.show(0, 1, calendar.scr_pos) end)))
107     end
108 end
109
110 return calendar