mirror of https://github.com/lcpz/lain.git
140 lines
4.6 KiB
Lua
140 lines
4.6 KiB
Lua
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--[[
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Licensed under GNU General Public License v2
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* (c) 2014, projektile
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* (c) 2013, Luke Bonham
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* (c) 2010-2012, Peter Hofmann
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--]]
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local tag = require("awful.tag")
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local beautiful = require("beautiful")
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local math = { ceil = math.ceil,
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floor = math.floor,
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max = math.max }
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local tonumber = tonumber
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local termfair = { name = "termfair" }
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function termfair.arrange(p)
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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 now
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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 | | | -> | 2 | 1 | | -> | 3 | 2 | 1 | ->
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-- | | | | | | | | | | | |
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-- +---+---+---+ +---+---+---+ +---+---+---+
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-- (4) (5) (6)
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-- +---+---+---+ +---+---+---+ +---+---+---+
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-- | 4 | | | | 5 | 4 | | | 6 | 5 | 4 |
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-- +---+---+---+ -> +---+---+---+ -> +---+---+---+
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-- | 3 | 2 | 1 | | 3 | 2 | 1 | | 3 | 2 | 1 |
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-- +---+---+---+ +---+---+---+ +---+---+---+
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-- A useless gap (like the dwm patch) can be defined with
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-- beautiful.useless_gap_width.
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local useless_gap = tonumber(beautiful.useless_gap_width) or 0
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if useless_gap < 0 then useless_gap = 0 end
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-- A global border can be defined with
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-- beautiful.global_border_width
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local global_border = tonumber(beautiful.global_border_width) or 0
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if global_border < 0 then global_border = 0 end
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-- Screen.
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local wa = p.workarea
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local cls = p.clients
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-- Borders are factored in.
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wa.height = wa.height - (global_border * 2)
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wa.width = wa.width - (global_border * 2)
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wa.x = wa.x + global_border
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wa.y = wa.y + global_border
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-- How many vertical columns?
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local t = tag.selected(p.screen)
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local num_x = termfair.nmaster or tag.getnmaster(t)
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-- Do at least "desired_y" rows.
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local desired_y = termfair.ncol or tag.getncol(t)
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if #cls > 0
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then
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local num_y = math.max(math.ceil(#cls / num_x), desired_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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local width = math.floor((wa.width - (num_x + 1)*useless_gap) / num_x)
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local height = math.floor((wa.height - (num_y + 1)*useless_gap) / num_y)
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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
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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
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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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-- Calc geometry.
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local g = {}
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if this_x == (num_x - 1)
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then
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g.width = wa.width - (num_x - 1)*width - (num_x + 1)*useless_gap - 2*c.border_width
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else
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g.width = width - 2*c.border_width
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end
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if this_y == (num_y - 1)
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then
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g.height = wa.height - (num_y - 1)*height - (num_y + 1)*useless_gap - 2*c.border_width
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else
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g.height = height - 2*c.border_width
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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 useless_gap > 0
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then
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-- All clients tile evenly.
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g.x = g.x + (this_x + 1)*useless_gap
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g.y = g.y + (this_y + 1)*useless_gap
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end
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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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c:geometry(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
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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
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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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end
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end
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return termfair
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