+
+--[[
+
+ Licensed under GNU General Public License v2
+ * (c) 2013, Luke Bonham
+ * (c) 2012, Nicolas Estibals
+ * (c) 2010-2012, Peter Hofmann
+
+--]]
+
+local tag = require("awful.tag")
+local beautiful = require("beautiful")
+local math = { ceil = math.ceil,
+ floor = math.floor,
+ max = math.max }
+local tonumber = tonumber
+
+local centerfair = { name = "centerfair" }
+
+function centerfair.arrange(p)
+ -- Layout with fixed number of vertical columns (read from nmaster).
+ -- Cols are centerded until there is nmaster columns, then windows
+ -- are stacked in the slave columns, with at most ncol clients per
+ -- column if possible.
+
+ -- with nmaster=3 and ncol=1 you'll have
+ -- (1) (2) (3)
+ -- +---+---+---+ +-+---+---+-+ +---+---+---+
+ -- | | | | | | | | | | | | |
+ -- | | 1 | | -> | | 1 | 2 | | -> | 1 | 2 | 3 | ->
+ -- | | | | | | | | | | | | |
+ -- +---+---+---+ +-+---+---+-+ +---+---+---+
+
+ -- (4) (5)
+ -- +---+---+---+ +---+---+---+
+ -- | | | 3 | | | 2 | 4 |
+ -- + 1 + 2 +---+ -> + 1 +---+---+
+ -- | | | 4 | | | 3 | 5 |
+ -- +---+---+---+ +---+---+---+
+
+ -- 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
+
+ -- Screen.
+ local wa = p.workarea
+ local cls = p.clients
+
+ -- How many vertical columns? Read from nmaster on the tag.
+ local t = tag.selected(p.screen)
+ local num_x = centerfair.nmaster or tag.getnmaster(t)
+ local ncol = centerfair.ncol or tag.getncol(t)
+
+ local width = math.floor((wa.width-(num_x+1)*useless_gap) / num_x)
+
+ local offset_y = wa.y + useless_gap
+ if #cls < num_x
+ then
+ -- Less clients than the number of columns, let's center it!
+ local offset_x = wa.x + useless_gap + (wa.width - #cls*width - (#cls+1)*useless_gap) / 2
+ local g = {}
+ g.width = width
+ g.height = wa.height - 2*useless_gap - 2
+ g.y = offset_y
+ for i = 1, #cls do
+ g.x = offset_x + (i - 1) * (width + useless_gap + 2)
+ cls[i]:geometry(g)
+ end
+ else
+ -- More clients than the number of columns, let's arrange it!
+ local offset_x = wa.x
+ if useless_gap > 0 then
+ offset_x = offset_x
+ end
+
+ -- Master client deserves a special treatement
+ local g = {}
+ g.width = wa.width - (num_x-1)*width -num_x*useless_gap - 2
+ g.height = wa.height - 2*useless_gap - 2
+ g.x = offset_x + useless_gap
+ g.y = offset_y
+ cls[1]:geometry(g)
+
+ -- Treat the other clients
+
+ -- Compute distribution of clients among columns
+ local num_y ={}
+ do
+ local remaining_clients = #cls-1
+ local ncol_min = math.ceil(remaining_clients/(num_x-1))
+ if ncol >= ncol_min
+ then
+ for i = (num_x-1), 1, -1 do
+ if (remaining_clients-i+1) < ncol
+ then
+ num_y[i] = remaining_clients-i + 1
+ else
+ num_y[i] = ncol
+ end
+ remaining_clients = remaining_clients - num_y[i]
+ end
+ else
+ local rem = remaining_clients % (num_x-1)
+ if rem ==0
+ then
+ for i = 1, num_x-1 do
+ num_y[i] = ncol_min
+ end
+ else
+ for i = 1, num_x-1 do
+ num_y[i] = ncol_min - 1
+ end
+ for i = 0, rem-1 do
+ num_y[num_x-1-i] = num_y[num_x-1-i] + 1
+ end
+ end
+ end
+ end
+
+ -- Compute geometry of the other clients
+ local nclient = 2
+ g.x = g.x + g.width+useless_gap + 2
+ g.width = width
+
+ if useless_gap > 0 then
+ g.width = g.width - useless_gap/2 - 2
+ end
+
+ for i = 1, (num_x-1) do
+ to_remove = 2
+ g.height = math.floor((wa.height-useless_gap)/num_y[i])
+ g.y = offset_y
+ for j = 0, (num_y[i]-2) do
+ cls[nclient]:geometry(g)
+ nclient = nclient + 1
+ g.y = g.y + g.height+useless_gap + 2
+ to_remove = to_remove + 2
+ end
+ g.height = wa.height - num_y[i]*useless_gap - (num_y[i]-1)*g.height - useless_gap - to_remove
+ cls[nclient]:geometry(g)
+ nclient = nclient + 1
+ g.x = g.x+g.width+useless_gap + 2
+ end
+ end
+end
+
+return centerfair
projects / etc / awesome.git / commitdiff
