dotfiles/awesome/lain/layout/termfair.lua
2020-05-16 23:07:21 +03:00

237 lines
8.2 KiB
Lua

--[[
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" }
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