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Diffstat (limited to 'lain/layout/cascadetile.lua')
| -rw-r--r-- | lain/layout/cascadetile.lua | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/lain/layout/cascadetile.lua b/lain/layout/cascadetile.lua new file mode 100644 index 0000000..e9b9425 --- /dev/null +++ b/lain/layout/cascadetile.lua @@ -0,0 +1,167 @@ + +--[[ + + Licensed under GNU General Public License v2 + * (c) 2014, projektile + * (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) + -- +----------+---+ +----------+---+ +----------+---+ +----------+---+ + -- | | | | | 3 | | | 4 | | +---+| + -- | | | -> | | | -> | +---++ -> | +---+|+ + -- | 1 | 2 | | 1 +---++ | 1 | 3 || | 1 +---+|+| + -- | | | | | 2 || | +---++| | +---+|+ | + -- | | | | | || | | 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 + if useless_gap < 0 then useless_gap = 0 end + + -- A global border can be defined with + -- beautiful.global_border_width + local global_border = tonumber(beautiful.global_border_width) or 0 + if global_border < 0 then global_border = 0 end + + -- Themes border width requires an offset + local bw = tonumber(beautiful.border_width) or 0 + + -- Screen. + local wa = p.workarea + local cls = p.clients + + -- Borders are factored in. + wa.height = wa.height - ((global_border * 2) + (bw * 2)) + wa.width = wa.width - ((global_border * 2) + (bw * 2)) + + -- 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 + global_border + g.y = wa.y + global_border + 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 + global_border + 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 |