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--[[
Licensed under GNU General Public License v2
* (c) 2014, projektile
* (c) 2013, Luke Bonham
* (c) 2009, Uli Schlachter
* (c) 2008, Julien Danjolu
--]]
local beautiful = require("beautiful")
local ipairs = ipairs
local tonumber = tonumber
local math = require("math")
local uselesspiral = {}
local function spiral(p, spiral)
-- A useless gap (like the dwm patch) can be defined with
-- beautiful.useless_gap_width.
local useless_gap = tonumber(beautiful.useless_gap_width) or 0
if useless_gap < 0 then useless_gap = 0 end
-- A global border can be defined with
-- beautiful.global_border_width
local global_border = tonumber(beautiful.global_border_width) or 0
if global_border < 0 then global_border = 0 end
-- Themes border width requires an offset
local bw = tonumber(beautiful.border_width) or 0
-- get our orientation right
local wa = p.workarea
local cls = p.clients
local n = #cls -- number of windows total; k = which window number
wa.height = wa.height - ((global_border * 2) + (bw * 2))
wa.width = wa.width - ((global_border * 2) + (bw * 2))
local static_wa = wa
for k, c in ipairs(cls) do
if k < n then
if k % 2 == 0 then
wa.height = (wa.height / 2)
else
wa.width = (wa.width / 2)
end
end
if k % 4 == 0 and spiral then
wa.x = wa.x - wa.width
elseif k % 2 == 0 or
(k % 4 == 3 and k < n and spiral) then
wa.x = wa.x + wa.width
end
if k % 4 == 1 and k ~= 1 and spiral then
wa.y = wa.y - wa.height
elseif k % 2 == 1 and k ~= 1 or
(k % 4 == 0 and k < n and spiral) then
wa.y = wa.y + wa.height
end
local wa2 = {}
wa2.x = wa.x + (useless_gap / 2) + global_border
wa2.y = wa.y + (useless_gap / 2) + global_border
wa2.height = wa.height - (useless_gap / 2)
wa2.width = wa.width - (useless_gap / 2)
-- Useless gap.
if useless_gap > 0
then
-- Top and left clients are shrinked by two steps and
-- get moved away from the border. Other clients just
-- get shrinked in one direction.
top = false
left = false
if wa2.y == static_wa.y then
top = true
end
if wa2.x == static_wa.x then
left = true
end
if top then
wa2.height = wa2.height - useless_gap
wa2.y = wa2.y - (useless_gap / 2)
else
wa2.height = wa2.height - (useless_gap / 2)
end
if left then
wa2.width = wa2.width - useless_gap
wa2.x = wa2.x - (useless_gap / 2)
else
wa2.width = wa2.width - (useless_gap / 2)
end
end
-- End of useless gap.
c:geometry(wa2)
end
end
--- Dwindle layout
uselesspiral.dwindle = {}
uselesspiral.dwindle.name = "uselessdwindle"
function uselesspiral.dwindle.arrange(p)
return spiral(p, false)
end
--- Spiral layout
uselesspiral.name = "uselesspiral"
function uselesspiral.arrange(p)
return spiral(p, true)
end
return uselesspiral
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