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+--[[
+
+ Licensed under GNU General Public License v2
+ * (c) 2014, projektile
+ * (c) 2013, Luca CPZ
+ * (c) 2010, Nicolas Estibals
+ * (c) 2010-2012, Peter Hofmann
+
+--]]
+
+local math = math
+local screen = screen
+local tonumber = tonumber
+
+local termfair = { name = "termfair" }
+termfair.center = { name = "centerfair" }
+termfair.stable = { name = "stablefair" }
+
+local function do_fair(p, orientation)
+ local t = p.tag or screen[p.screen].selected_tag
+ local wa = p.workarea
+ local cls = p.clients
+
+ if #cls == 0 then return end
+
+ -- How many vertical columns? Read from nmaster on the tag.
+ local num_x = tonumber(termfair.nmaster) or t.master_count
+ local ncol = tonumber(termfair.ncol) or t.column_count
+ if num_x <= 2 then num_x = 2 end
+ if ncol <= 1 then ncol = 1 end
+ local width = math.floor(wa.width/num_x)
+
+ if orientation == "west" then
+ -- Layout with fixed number of vertical columns (read from nmaster).
+ -- New windows align from left to right. When a row is full, a new
+ -- one above it is created. Like this:
+
+ -- (1) (2) (3)
+ -- +---+---+---+ +---+---+---+ +---+---+---+
+ -- | | | | | | | | | | | |
+ -- | 1 | | | -> | 1 | 2 | | -> | 1 | 2 | 3 | ->
+ -- | | | | | | | | | | | |
+ -- +---+---+---+ +---+---+---+ +---+---+---+
+
+ -- (4) (5) (6)
+ -- +---+---+---+ +---+---+---+ +---+---+---+
+ -- | 1 | | | | 1 | 2 | | | 1 | 2 | 3 |
+ -- +---+---+---+ -> +---+---+---+ -> +---+---+---+
+ -- | 2 | 3 | 4 | | 3 | 4 | 5 | | 4 | 5 | 6 |
+ -- +---+---+---+ +---+---+---+ +---+---+---+
+
+ local num_y = math.max(math.ceil(#cls / num_x), ncol)
+ local height = math.floor(wa.height/num_y)
+ local cur_num_x = num_x
+ local at_x = 0
+ local at_y = 0
+
+ local remaining_clients = #cls
+
+ -- We start the first row. Left-align by limiting the number of
+ -- available slots.
+ if remaining_clients < num_x then
+ cur_num_x = remaining_clients
+ end
+
+ -- Iterate in reversed order.
+ for i = #cls,1,-1 do
+ -- Get x and y position.
+ local c = cls[i]
+ local this_x = cur_num_x - at_x - 1
+ local this_y = num_y - at_y - 1
+
+ -- Calculate geometry.
+ local g = {}
+ if this_x == (num_x - 1) then
+ g.width = wa.width - (num_x - 1)*width
+ else
+ g.width = width
+ end
+
+ if this_y == (num_y - 1) then
+ g.height = wa.height - (num_y - 1)*height
+ else
+ g.height = height
+ end
+
+ g.x = wa.x + this_x*width
+ g.y = wa.y + this_y*height
+
+ if g.width < 1 then g.width = 1 end
+ if g.height < 1 then g.height = 1 end
+
+ p.geometries[c] = g
+
+ remaining_clients = remaining_clients - 1
+
+ -- Next grid position.
+ at_x = at_x + 1
+ if at_x == num_x then
+ -- Row full, create a new one above it.
+ at_x = 0
+ at_y = at_y + 1
+
+ -- We start a new row. Left-align.
+ if remaining_clients < num_x then
+ cur_num_x = remaining_clients
+ end
+ end
+ end
+ elseif orientation == "stable" then
+ -- Layout with fixed number of vertical columns (read from nmaster).
+ -- New windows align from left to right. When a row is full, a new
+ -- one below it is created. Like this:
+
+ -- (1) (2) (3)
+ -- +---+---+---+ +---+---+---+ +---+---+---+
+ -- | | | | | | | | | | | |
+ -- | 1 | | | -> | 1 | 2 | | -> | 1 | 2 | 3 | ->
+ -- | | | | | | | | | | | |
+ -- +---+---+---+ +---+---+---+ +---+---+---+
+
+ -- (4) (5) (6)
+ -- +---+---+---+ +---+---+---+ +---+---+---+
+ -- | 1 | 2 | 3 | | 1 | 2 | 3 | | 1 | 2 | 3 |
+ -- +---+---+---+ +---+---+---+ +---+---+---+
+ -- | 4 | | | | 4 | 5 | | | 4 | 5 | 6 |
+ -- +---+---+---+ -> +---+---+---+ -> +---+---+---+
+
+ local num_y = math.max(math.ceil(#cls / num_x), ncol)
+ local height = math.floor(wa.height/num_y)
+
+ for i = #cls,1,-1 do
+ -- Get x and y position.
+ local c = cls[i]
+ local this_x = (i - 1) % num_x
+ local this_y = math.floor((i - this_x - 1) / num_x)
+
+ -- Calculate geometry.
+ local g = {}
+ if this_x == (num_x - 1) then
+ g.width = wa.width - (num_x - 1)*width
+ else
+ g.width = width
+ end
+
+ if this_y == (num_y - 1) then
+ g.height = wa.height - (num_y - 1)*height
+ else
+ g.height = height
+ end
+
+ g.x = wa.x + this_x*width
+ g.y = wa.y + this_y*height
+
+ if g.width < 1 then g.width = 1 end
+ if g.height < 1 then g.height = 1 end
+
+ p.geometries[c] = g
+ end
+ elseif orientation == "center" then
+ -- 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 |
+ -- +---+---+---+ +---+---+---+
+
+ if #cls < num_x then
+ -- Less clients than the number of columns, let's center it!
+ local offset_x = wa.x + (wa.width - #cls*width) / 2
+ for i = 1, #cls do
+ local g = { y = wa.y }
+ g.width = width
+ g.height = wa.height
+ if g.width < 1 then g.width = 1 end
+ if g.height < 1 then g.height = 1 end
+ g.x = offset_x + (i - 1) * width
+ p.geometries[cls[i]] = g
+ end
+ else
+ -- More clients than the number of columns, let's arrange it!
+ -- Master client deserves a special treatement
+ local g = {}
+ g.width = wa.width - (num_x - 1)*width
+ g.height = wa.height
+ if g.width < 1 then g.width = 1 end
+ if g.height < 1 then g.height = 1 end
+ g.x = wa.x
+ g.y = wa.y
+ p.geometries[cls[1]] = g
+
+ -- Treat the other clients
+
+ -- Compute distribution of clients among columns
+ local num_y = {}
+ 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
+
+ -- Compute geometry of the other clients
+ local nclient = 2 -- we start with the 2nd client
+ local wx = g.x + g.width
+ for i = 1, (num_x-1) do
+ local height = math.floor(wa.height / num_y[i])
+ local wy = wa.y
+ for _ = 0, (num_y[i]-2) do
+ g = {}
+ g.x = wx
+ g.y = wy
+ g.height = height
+ g.width = width
+ if g.width < 1 then g.width = 1 end
+ if g.height < 1 then g.height = 1 end
+ p.geometries[cls[nclient]] = g
+ nclient = nclient + 1
+ wy = wy + height
+ end
+ g = {}
+ g.x = wx
+ g.y = wy
+ g.height = wa.height - (num_y[i] - 1)*height
+ g.width = width
+ if g.width < 1 then g.width = 1 end
+ if g.height < 1 then g.height = 1 end
+ p.geometries[cls[nclient]] = g
+ nclient = nclient + 1
+ wx = wx + width
+ end
+ end
+ end
+end
+
+function termfair.center.arrange(p)
+ return do_fair(p, "center")
+end
+
+function termfair.stable.arrange(p)
+ return do_fair(p, "stable")
+end
+
+function termfair.arrange(p)
+ return do_fair(p, "west")
+end
+
+return termfair
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-06 08:45:44 +0000