diff options
Diffstat (limited to 'lain/layout/uselesstile.lua')
| -rw-r--r-- | lain/layout/uselesstile.lua | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/lain/layout/uselesstile.lua b/lain/layout/uselesstile.lua new file mode 100644 index 0000000..e48c85d --- /dev/null +++ b/lain/layout/uselesstile.lua @@ -0,0 +1,226 @@ + +--[[ + + Licensed under GNU General Public License v2 + * (c) 2014, projektile, worron + * (c) 2013, Luke Bonham + * (c) 2009, Donald Ephraim Curtis + * (c) 2008, Julien Danjolu + +--]] + +local tag = require("awful.tag") +local beautiful = require("beautiful") +local ipairs = ipairs +local math = { floor = math.floor, + ceil = math.ceil, + max = math.max, + min = math.min } +local tonumber = tonumber + +local uselesstile = {} + +-- Transformation functions +local function flip(canvas, geometry) + return { + -- vertical only + x = 2 * canvas.x + canvas.width - geometry.x - geometry.width, + y = geometry.y, + width = geometry.width, + height = geometry.height + } +end + +local function swap(geometry) + return { x = geometry.y, y = geometry.x, width = geometry.height, height = geometry.width } +end + +-- Find geometry for secondary windows column +local function cut_column(wa, n, index) + local width = wa.width / n + local area = { x = wa.x + (index - 1) * width, y = wa.y, width = width, height = wa.height } + + return area +end + +-- Find geometry for certain window in column +local function cut_row(wa, factor, index, used) + local height = wa.height * factor.window[index] / factor.total + local area = { x = wa.x, y = wa.y + used, width = wa.width, height = height } + + return area +end + +-- Client geometry correction depending on useless gap and window border +local function size_correction(c, geometry, useless_gap) + geometry.width = math.max(geometry.width - 2 * c.border_width - useless_gap, 1) + geometry.height = math.max(geometry.height - 2 * c.border_width - useless_gap, 1) + geometry.x = geometry.x + useless_gap / 2 + geometry.y = geometry.y + useless_gap / 2 +end + +-- Check size factor for group of clients and calculate total +local function calc_factor(n, winfactors) + local factor = { window = winfactors, total = 0, min = 1 } + + for i = 1, n do + if not factor.window[i] then + factor.window[i] = factor.min + else + factor.min = math.min(factor.window[i], factor.min) + if factor.window[i] < 0.05 then factor.window[i] = 0.05 end + end + factor.total = factor.total + factor.window[i] + end + + return factor +end + +-- Tile group of clients in given area +-- @canvas need for proper transformation only +-- @winfactors table with clients size factors +local function tile_column(canvas, area, list, useless_gap, transformation, winfactors) + local used = 0 + local factor = calc_factor(#list, winfactors) + + for i, c in ipairs(list) do + local g = cut_row(area, factor, i, used) + used = used + g.height + + -- swap workarea dimensions + if transformation.flip then g = flip(canvas, g) end + if transformation.swap then g = swap(g) end + + -- useless gap and border correction + size_correction(c, g, useless_gap) + + c:geometry(g) + end +end + +--Main tile function +local function tile(p, orientation) + + -- Theme vars + local useless_gap = beautiful.useless_gap_width or 0 + local global_border = beautiful.global_border_width or 0 + + -- Aliases + local wa = p.workarea + local cls = p.clients + local t = tag.selected(p.screen) + + -- Nothing to tile here + if #cls == 0 then return end + + -- Get tag prop + local nmaster = math.min(tag.getnmaster(t), #cls) + local mwfact = tag.getmwfact(t) + + if nmaster == 0 then + mwfact = 0 + elseif nmaster == #cls then + mwfact = 1 + end + + -- clients size factor + local data = tag.getdata(t).windowfact + + if not data then + data = {} + tag.getdata(t).windowfact = data + end + + -- Workarea size correction depending on useless gap and global border + wa.height = wa.height - 2 * global_border - useless_gap + wa.width = wa.width - 2 * global_border - useless_gap + wa.x = wa.x + useless_gap / 2 + global_border + wa.y = wa.y + useless_gap / 2 + global_border + + -- Find which transformation we need for given orientation + local transformation = { + swap = orientation == 'top' or orientation == 'bottom', + flip = orientation == 'left' or orientation == 'top' + } + + -- Swap workarea dimensions if orientation vertical + if transformation.swap then wa = swap(wa) end + + -- Split master and other windows + local cls_master, cls_other = {}, {} + + for i, c in ipairs(cls) do + if i <= nmaster then + table.insert(cls_master, c) + else + table.insert(cls_other, c) + end + end + + -- Tile master windows + local master_area = { + x = wa.x, + y = wa.y, + width = nmaster > 0 and wa.width * mwfact or 0, + height = wa.height + } + + if not data[0] then data[0] = {} end + tile_column(wa, master_area, cls_master, useless_gap, transformation, data[0]) + + -- Tile other windows + local other_area = { + x = wa.x + master_area.width, + y = wa.y, + width = wa.width - master_area.width, + height = wa.height + } + + -- get column number for other windows + local ncol = math.min(tag.getncol(t), #cls_other) + + if ncol == 0 then ncol = 1 end + + -- split other windows to column groups + local last_small_column = ncol - #cls_other % ncol + local rows_min = math.floor(#cls_other / ncol) + + local client_index = 1 + for i = 1, ncol do + local position = transformation.flip and ncol - i + 1 or i + local rows = i <= last_small_column and rows_min or rows_min + 1 + local column = {} + + for j = 1, rows do + table.insert(column, cls_other[client_index]) + client_index = client_index + 1 + end + + -- and tile + local column_area = cut_column(other_area, ncol, position) + + if not data[i] then data[i] = {} end + tile_column(wa, column_area, column, useless_gap, transformation, data[i]) + end +end + +-- Layout constructor +local function construct_layout(name, orientation) + return { + name = name, + -- @p screen number to tile + arrange = function(p) return tile(p, orientation) end + } +end + +-- Build layouts with different tile direction +uselesstile.right = construct_layout("uselesstile", "right") +uselesstile.left = construct_layout("uselesstileleft", "left") +uselesstile.bottom = construct_layout("uselesstilebottom", "bottom") +uselesstile.top = construct_layout("uselesstiletop", "top") + +-- Module aliase +uselesstile.arrange = uselesstile.right.arrange +uselesstile.name = uselesstile.right.name + +return uselesstile |