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