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Window border width issue fixes in uselessfair
[etc/awesome.git] / layout / uselessfair.lua
1
2 --[[
3
4      Licensed under GNU General Public License v2
5       * (c) 2014,      projektile
6       * (c) 2013,      Luke Bonham
7       * (c) 2012,      Josh Komoroske
8       * (c) 2010-2012, Peter Hofmann
9
10 --]]
11
12 local beautiful = require("beautiful")
13 local ipairs    = ipairs
14 local math      = { ceil = math.ceil, sqrt = math.sqrt }
15 local tonumber  = tonumber
16
17 local uselessfair = {}
18
19 local function fair(p, orientation)
20     -- A useless gap (like the dwm patch) can be defined with
21     -- beautiful.useless_gap_width.
22     local useless_gap = tonumber(beautiful.useless_gap_width) or 0
23     if useless_gap < 0 then useless_gap = 0 end
24
25     -- A global border can be defined with
26     -- beautiful.global_border_width.
27     local global_border = tonumber(beautiful.global_border_width) or 0
28     if global_border < 0 then global_border = 0 end
29
30     -- Themes border width requires an offset.
31     local bw = tonumber(beautiful.border_width) or 0
32
33     -- Total window size extend
34     local ext = 2 * bw + useless_gap
35
36     -- get our orientation right.
37     local wa = p.workarea
38     local cls = p.clients
39
40     wa.height = wa.height - 2 * global_border - useless_gap
41     wa.width  = wa.width -  2 * global_border - useless_gap
42     wa.x = wa.x + useless_gap + global_border
43     wa.y = wa.y + useless_gap + global_border
44
45     if #cls > 0 then
46         local cells = math.ceil(math.sqrt(#cls))
47         local strips = math.ceil(#cls / cells)
48
49         local cell = 0
50         local strip = 0
51         for k, c in ipairs(cls) do
52             local g = {}
53
54             if ( orientation == "east" and #cls > 2 )
55             or ( orientation == "south" and #cls <= 2 ) then
56                 if #cls < (strips * cells) and strip == strips - 1 then
57                     g.width = wa.width / (cells - ((strips * cells) - #cls))
58                 else
59                     g.width = wa.width / cells
60                 end
61                 g.height = wa.height / strips
62
63                 g.x = wa.x + cell * g.width
64                 g.y = wa.y + strip * g.height
65
66             else
67                 if #cls < (strips * cells) and strip == strips - 1 then
68                     g.height = wa.height / (cells - ((strips * cells) - #cls))
69                 else
70                     g.height = wa.height / cells
71                 end
72                 g.width = wa.width / strips
73
74                 g.x = wa.x + strip * g.width
75                 g.y = wa.y + cell * g.height
76
77             end
78
79             g.width = g.width - ext
80             g.height = g.height - ext
81
82             c:geometry(g)
83
84             cell = cell + 1
85             if cell == cells then
86                 cell = 0
87                 strip = strip + 1
88             end
89         end
90     end
91 end
92
93 --- Horizontal fair layout.
94 -- @param screen The screen to arrange.
95 uselessfair.horizontal = {}
96 uselessfair.horizontal.name = "uselessfairh"
97 function uselessfair.horizontal.arrange(p)
98     return fair(p, "east")
99 end
100
101 -- Vertical fair layout.
102 -- @param screen The screen to arrange.
103 uselessfair.name = "uselessfair"
104 function uselessfair.arrange(p)
105     return fair(p, "south")
106 end
107
108 return uselessfair