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calendar: separate args from attach; closes #294
[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 helpers      = require("lain.helpers")
10 local markup       = require("lain.util.markup")
11 local awful        = require("awful")
12 local naughty      = require("naughty")
13 local os           = { date   = os.date }
14 local string       = { format = string.format,
15                        gsub   = string.gsub }
16 local ipairs       = ipairs
17 local tonumber     = tonumber
18 local setmetatable = setmetatable
19
20 -- Calendar notification
21 -- lain.widgets.calendar
22 local calendar = { offset = 0 }
23
24 function calendar.hide()
25     naughty.destroy(naughty.getById(calendar.id))
26 end
27
28 function calendar.show(t_out, inc_offset, scr)
29     local today = os.date("%d")
30     local offs = inc_offset or 0
31     local f
32
33     calendar.offset = calendar.offset + offs
34
35     local current_month = (offs == 0 or calendar.offset == 0)
36
37     if current_month then -- today highlighted
38         calendar.offset = 0
39         calendar.notify_icon = string.format("%s%s.png", calendar.icons, today)
40         f = calendar.cal
41     else -- no current month showing, no day to highlight
42        local month = tonumber(os.date("%m"))
43        local year  = tonumber(os.date("%Y"))
44
45        month = month + calendar.offset
46
47        while month > 12 do
48            month = month - 12
49            year = year + 1
50        end
51
52        while month < 1 do
53            month = month + 12
54            year = year - 1
55        end
56
57        calendar.notify_icon = nil
58        f = string.format("%s %s %s", calendar.cal, month, year)
59     end
60
61     if calendar.followtag then
62         calendar.notification_preset.screen = awful.screen.focused()
63     else
64         calendar.notification_preset.screen = src or 1
65     end
66
67     helpers.async(f, function(ws)
68         fg, bg = calendar.notification_preset.fg, calendar.notification_preset.bg
69         ws = ws:gsub("%c%[%d+[m]?%d+%c%[%d+[m]?", markup.bold(markup.color(bg, fg, today)))
70         calendar.hide()
71         calendar.id = naughty.notify({
72             replaces_id = calendar.id,
73             preset      = calendar.notification_preset,
74             text        = ws:gsub("\n*$", ""),
75             icon        = calendar.notify_icon,
76             timeout     = t_out or calendar.notification.preset.timeout or 5
77         }).id
78     end)
79 end
80
81 function calendar.attach(widget)
82     widget:connect_signal("mouse::enter", function () calendar.show(0) end)
83     widget:connect_signal("mouse::leave", function () calendar.hide() end)
84     widget:buttons(awful.util.table.join(awful.button({ }, 1, function ()
85                                              calendar.show(0, -1, calendar.scr_pos) end),
86                                          awful.button({ }, 3, function ()
87                                              calendar.show(0, 1, calendar.scr_pos) end),
88                                          awful.button({ }, 4, function ()
89                                              calendar.show(0, -1, calendar.scr_pos) end),
90                                          awful.button({ }, 5, function ()
91                                              calendar.show(0, 1, calendar.scr_pos) end)))
92 end
93
94 local function worker(args)
95     local args                   = args or {}
96     calendar.cal                 = args.cal or "/usr/bin/cal --color=always"
97     calendar.attach_to           = args.attach_to or {}
98     calendar.followtag           = args.followtag or false
99     calendar.icons               = args.icons or helpers.icons_dir .. "cal/white/"
100     calendar.notification_preset = args.notification_preset
101
102     if not calendar.notification_preset then
103         calendar.notification_preset = {
104             font = "Monospace 10",
105             fg   = "#FFFFFF",
106             bg   = "#000000"
107         }
108     end
109
110     for i, widget in ipairs(calendar.attach_to) do calendar.attach(widget) end
111 end
112
113 return setmetatable(calendar, { __call = function(_, ...) return worker(...) end })