--[[ 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 = { ceil = math.ceil, floor = math.floor, max = math.max } local screen = screen local tonumber = tonumber local termfair = { name = "termfair" } termfair.center = { name = "centerfair" } 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 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 now -- one above it is created. Like this: -- (1) (2) (3) -- +---+---+---+ +---+---+---+ +---+---+---+ -- | | | | | | | | | | | | -- | 1 | | | -> | 2 | 1 | | -> | 3 | 2 | 1 | -> -- | | | | | | | | | | | | -- +---+---+---+ +---+---+---+ +---+---+---+ -- (4) (5) (6) -- +---+---+---+ +---+---+---+ +---+---+---+ -- | 4 | | | | 5 | 4 | | | 6 | 5 | 4 | -- +---+---+---+ -> +---+---+---+ -> +---+---+---+ -- | 3 | 2 | 1 | | 3 | 2 | 1 | | 3 | 2 | 1 | -- +---+---+---+ +---+---+---+ +---+---+---+ -- 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) 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 == "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 | -- +---+---+---+ +---+---+---+ -- How many vertical columns? Read from nmaster on the tag. local num_x = tonumber(termfair.center.nmaster) or t.master_count local ncol = tonumber(termfair.center.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 #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 j = 0, (num_y[i]-2) do local 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 local 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.arrange(p) return do_fair(p, "west") end return termfair