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lain.imap: various improvements
[etc/awesome.git] / util / quake.lua
1 --[[
2
3      Licensed under GNU General Public License v2
4       * (c) 2016, Luca CPZ
5       * (c) 2015, unknown
6
7 --]]
8
9 local awful        = require("awful")
10 local capi         = { client = client }
11
12 local math         = { floor  = math.floor }
13 local string       = { format = string.format }
14
15 local pairs        = pairs
16 local screen       = screen
17
18 local setmetatable = setmetatable
19
20 -- Quake-like Dropdown application spawn
21 local quake = {}
22
23 -- If you have a rule like "awful.client.setslave" for your terminals,
24 -- ensure you use an exception for QuakeDD. Otherwise, you may
25 -- run into problems with focus.
26
27 function quake:display()
28     if self.followtag then self.screen = awful.screen.focused() end
29
30     -- First, we locate the client
31     local client = nil
32     local i = 0
33     for c in awful.client.iterate(function (c)
34         -- c.name may be changed!
35         return c.instance == self.name
36     end)
37     do
38         i = i + 1
39         if i == 1 then
40             client = c
41         else
42             -- Additional matching clients, let's remove the sticky bit
43             -- which may persist between awesome restarts. We don't close
44             -- them as they may be valuable. They will just turn into
45             -- normal clients.
46             c.sticky = false
47             c.ontop = false
48             c.above = false
49         end
50     end
51
52     if not client and not self.visible then return end
53
54     if not client then
55         -- The client does not exist, we spawn it
56         cmd = string.format("%s %s %s", self.app,
57               string.format(self.argname, self.name), self.extra)
58         awful.spawn(cmd, { tag = self.screen.selected_tag })
59         return
60     end
61
62     -- Set geometry
63     client.floating = true
64     client.border_width = self.border
65     client.size_hints_honor = false
66     client:geometry(self.geometry[self.screen.index] or self:compute_size())
67
68     -- Set not sticky and on top
69     client.sticky = false
70     client.ontop = true
71     client.above = true
72     client.skip_taskbar = true
73
74     -- Additional user settings
75     if self.settings then self.settings(client) end
76
77     -- Toggle display
78     if self.visible then
79         client.hidden = false
80         client:raise()
81         self.last_tag = self.screen.selected_tag
82         client:tags({self.screen.selected_tag})
83         capi.client.focus = client
84    else
85         client.hidden = true
86         local ctags = client:tags()
87         for i, t in pairs(ctags) do
88             ctags[i] = nil
89         end
90         client:tags(ctags)
91     end
92
93     return client
94 end
95
96 function quake:compute_size()
97     -- skip if we already have a geometry for this screen
98     if not self.geometry[self.screen.index] then
99         local geom
100         if not self.overlap then
101             geom = screen[self.screen.index].workarea
102         else
103             geom = screen[self.screen.index].geometry
104         end
105         local width, height = self.width, self.height
106         if width  <= 1 then width = math.floor(geom.width * width) - 2 * self.border end
107         if height <= 1 then height = math.floor(geom.height * height) end
108         local x, y
109         if     self.horiz == "left"  then x = geom.x
110         elseif self.horiz == "right" then x = geom.width + geom.x - width
111         else   x = geom.x + (geom.width - width)/2 end
112         if     self.vert == "top"    then y = geom.y
113         elseif self.vert == "bottom" then y = geom.height + geom.y - height
114         else   y = geom.y + (geom.height - height)/2 end
115         self.geometry[self.screen.index] = { x = x, y = y, width = width, height = height }
116     end
117     return self.geometry[self.screen.index]
118 end
119
120 function quake:new(config)
121     local conf = config or {}
122
123     conf.app        = conf.app       or "xterm"    -- application to spawn
124     conf.name       = conf.name      or "QuakeDD"  -- window name
125     conf.argname    = conf.argname   or "-name %s" -- how to specify window name
126     conf.extra      = conf.extra     or ""         -- extra arguments
127     conf.border     = conf.border    or 1          -- client border width
128     conf.visible    = conf.visible   or false      -- initially not visible
129     conf.followtag  = conf.followtag or false      -- spawn on currently focused screen
130     conf.overlap    = conf.overlap   or false      -- overlap wibox
131     conf.screen     = conf.screen    or awful.screen.focused()
132     conf.settings   = conf.settings
133
134     -- If width or height <= 1 this is a proportion of the workspace
135     conf.height     = conf.height    or 0.25       -- height
136     conf.width      = conf.width     or 1          -- width
137     conf.vert       = conf.vert      or "top"      -- top, bottom or center
138     conf.horiz      = conf.horiz     or "left"     -- left, right or center
139     conf.geometry   = {}                           -- internal use
140
141     local dropdown = setmetatable(conf, { __index = quake })
142
143     capi.client.connect_signal("manage", function(c)
144         if c.instance == dropdown.name and c.screen == dropdown.screen then
145             dropdown:display()
146         end
147     end)
148     capi.client.connect_signal("unmanage", function(c)
149         if c.instance == dropdown.name and c.screen == dropdown.screen then
150             dropdown.visible = false
151         end
152      end)
153
154     return dropdown
155 end
156
157 function quake:toggle()
158      if self.followtag then self.screen = awful.screen.focused() end
159      local current_tag = self.screen.selected_tag
160      if current_tag and self.last_tag ~= current_tag and self.visible then
161          local c=self:display()
162          if c then
163             c:move_to_tag(current_tag)
164         end
165      else
166          self.visible = not self.visible
167          self:display()
168      end
169 end
170
171 return setmetatable(quake, { __call = function(_, ...) return quake:new(...) end })