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--[[
Licensed under GNU General Public License v2
* (c) 2013, Luke Bonham
* (c) 2010-2012, Peter Hofmann
--]]
local tag = require("awful.tag")
local beautiful = require("beautiful")
local tonumber = tonumber
local cascadetile =
{
name = "cascadetile",
nmaster = 0,
ncol = 0,
mwfact = 0,
offset_x = 5,
offset_y = 32,
extra_padding = 0
}
function cascadetile.arrange(p)
-- Layout with one fixed column meant for a master window. Its
-- width is calculated according to mwfact. Other clients are
-- cascaded or "tabbed" in a slave column on the right.
-- It's a bit hard to demonstrate the behaviour with ASCII-images...
--
-- (1) (2) (3) (4)
-- +-----+---+ +-----+---+ +-----+---+ +-----+---+
-- | | | | | | | | | | | 4 |
-- | | | | | 2 | | | 3 | | | |
-- | 1 | | -> | 1 | | -> | 1 | | -> | 1 +---+
-- | | | | +---+ | +---+ | | 3 |
-- | | | | | | | | 2 | | |---|
-- | | | | | | | |---| | | 2 |
-- | | | | | | | | | | |---|
-- +-----+---+ +-----+---+ +-----+---+ +-----+---+
-- A useless gap (like the dwm patch) can be defined with
-- beautiful.useless_gap_width.
local useless_gap = tonumber(beautiful.useless_gap_width) or 0
-- Screen.
local wa = p.workarea
local cls = p.clients
-- Width of main column?
local t = tag.selected(p.screen)
local mwfact
if cascadetile.mwfact > 0
then
mwfact = cascadetile.mwfact
else
mwfact = tag.getmwfact(t)
end
-- Make slave windows overlap main window? Do this if ncol is 1.
local overlap_main
if cascadetile.ncol > 0
then
overlap_main = cascadetile.ncol
else
overlap_main = tag.getncol(t)
end
-- Minimum space for slave windows? See cascade.lua.
local num_c
if cascadetile.nmaster > 0
then
num_c = cascadetile.nmaster
else
num_c = tag.getnmaster(t)
end
local how_many = #cls - 1
if how_many < num_c
then
how_many = num_c
end
local current_offset_x = cascadetile.offset_x * (how_many - 1)
local current_offset_y = cascadetile.offset_y * (how_many - 1)
if #cls > 0
then
-- Main column, fixed width and height.
local c = cls[#cls]
local g = {}
local mainwid = wa.width * mwfact
local slavewid = wa.width - mainwid
if overlap_main == 1
then
g.width = wa.width
-- The size of the main window may be reduced a little bit.
-- This allows you to see if there are any windows below the
-- main window.
-- This only makes sense, though, if the main window is
-- overlapping everything else.
g.width = g.width - cascadetile.extra_padding
else
g.width = mainwid
end
g.height = wa.height
g.x = wa.x
g.y = wa.y
if useless_gap > 0
then
-- Reduce width once and move window to the right. Reduce
-- height twice, however.
g.width = g.width - useless_gap
g.height = g.height - 2 * useless_gap
g.x = g.x + useless_gap
g.y = g.y + useless_gap
-- When there's no window to the right, add an additional
-- gap.
if overlap_main == 1
then
g.width = g.width - useless_gap
end
end
c:geometry(g)
-- Remaining clients stacked in slave column, new ones on top.
if #cls > 1
then
for i = (#cls - 1),1,-1
do
c = cls[i]
g = {}
g.width = slavewid - current_offset_x
g.height = wa.height - current_offset_y
g.x = wa.x + mainwid + (how_many - i) * cascadetile.offset_x
g.y = wa.y + (i - 1) * cascadetile.offset_y
if useless_gap > 0
then
g.width = g.width - 2 * useless_gap
g.height = g.height - 2 * useless_gap
g.x = g.x + useless_gap
g.y = g.y + useless_gap
end
c:geometry(g)
end
end
end
end
return cascadetile
|
