-- Grab environment.
local ipairs = ipairs
local tonumber = tonumber
local beautiful = beautiful
local awful = awful
local print = print
module("layouts.cascadebrowse")
cascade_offset_x = 5
cascade_offset_y = 32
name = "cascadebrowse"
function arrange(p)
-- Layout with one fixed column meant for the browser 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)
if useless_gap == nil
then
useless_gap = 0
end
-- Screen.
local wa = p.workarea
local cls = p.clients
-- Width of main column?
local t = awful.tag.selected(p.screen)
local mwfact = awful.tag.getmwfact(t)
-- Make slave windows overlap main window? Do this if ncol is 1.
local overlap_main = awful.tag.getncol(t)
-- Minimum space for slave windows? See cascade.lua.
local num_c = awful.tag.getnmaster(t)
local how_many = #cls - 1
if how_many < num_c
then
how_many = num_c
end
local current_cascade_offset_x = cascade_offset_x * (how_many - 1)
local current_cascade_offset_y = cascade_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
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_cascade_offset_x
g.height = wa.height - current_cascade_offset_y
g.x = wa.x + mainwid + (how_many - i) * cascade_offset_x
g.y = wa.y + (i - 1) * cascade_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
-- vim: set et :
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