--[[
Licensed under GNU General Public License v2
+ * (c) 2014, projektile, worron
* (c) 2013, Luke Bonham
* (c) 2012, Josh Komoroske
* (c) 2010-2012, Peter Hofmann
local beautiful = require("beautiful")
local ipairs = ipairs
-local math = { ceil = math.ceil, sqrt = math.sqrt }
+local math = { ceil = math.ceil, sqrt = math.sqrt, floor = math.floor, max = math.max }
local tonumber = tonumber
local uselessfair = {}
+-- Transformation functions
+local function swap(geometry)
+ return { x = geometry.y, y = geometry.x, width = geometry.height, height = geometry.width }
+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
+
+-- Main tiling function
local function fair(p, orientation)
- -- 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
+ -- 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
- if #cls > 0 then
- local cells = math.ceil(math.sqrt(#cls))
- local strips = math.ceil(#cls / cells)
-
- local cell = 0
- local strip = 0
- for k, c in ipairs(cls) do
- local g = {}
- -- Save actual grid index for use in the useless_gap
- -- routine.
- local this_x = 0
- local this_y = 0
- if ( orientation == "east" and #cls > 2 )
- or ( orientation == "south" and #cls <= 2 ) then
- if #cls < (strips * cells) and strip == strips - 1 then
- g.width = wa.width / (cells - ((strips * cells) - #cls))
- else
- g.width = wa.width / cells
- end
- g.height = wa.height / strips
-
- this_x = cell
- this_y = strip
-
- g.x = wa.x + cell * g.width
- g.y = wa.y + strip * g.height
-
- else
- if #cls < (strips * cells) and strip == strips - 1 then
- g.height = wa.height / (cells - ((strips * cells) - #cls))
- else
- g.height = wa.height / cells
- end
- g.width = wa.width / strips
-
- this_x = strip
- this_y = cell
-
- g.x = wa.x + strip * g.width
- g.y = wa.y + cell * g.height
- end
-
- -- Useless gap.
- if useless_gap > 0
- then
- -- Top and left clients are shrinked by two steps and
- -- get moved away from the border. Other clients just
- -- get shrinked in one direction.
- if this_x == 0
- then
- g.width = g.width - 2 * useless_gap
- g.x = g.x + useless_gap
- else
- g.width = g.width - useless_gap
- end
-
- if this_y == 0
- then
- g.height = g.height - 2 * useless_gap
- g.y = g.y + useless_gap
- else
- g.height = g.height - useless_gap
- end
- end
- -- End of useless gap.
-
- c:geometry(g)
-
- cell = cell + 1
- if cell == cells then
- cell = 0
- strip = strip + 1
- end
+ -- Nothing to tile here
+ if #cls == 0 then return 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
+
+ -- Geometry calculation
+ local row, col = 0, 0
+
+ local rows = math.ceil(math.sqrt(#cls))
+ local cols = math.ceil(#cls / rows)
+
+ for i, c in ipairs(cls) do
+ local g = {}
+
+ -- find tile orientation for current client and swap geometry if need
+ local need_swap = (orientation == "east" and #cls <= 2) or (orientation == "south" and #cls > 2)
+ local area = need_swap and swap(wa) or wa
+
+ -- calculate geometry
+ if #cls < (cols * rows) and row == cols - 1 then
+ g.width = area.width / (rows - ((cols * rows) - #cls))
+ else
+ g.width = area.width / rows
end
+
+ g.height = area.height / cols
+ g.x = area.x + col * g.width
+ g.y = area.y + row * g.height
+
+ -- turn back to real if geometry was swapped
+ if need_swap then g = swap(g) end
+
+ -- window size correction depending on useless gap and window border
+ size_correction(c, g, useless_gap)
+
+ -- set geometry
+ c:geometry(g)
+
+ -- update tile grid coordinates
+ col = i % rows
+ row = math.floor(i / rows)
end
end
---- Horizontal fair layout.
--- @param screen The screen to arrange.
-uselessfair.horizontal = {}
-uselessfair.horizontal.name = "uselessfairh"
-function uselessfair.horizontal.arrange(p)
- return fair(p, "east")
+-- Layout constructor
+local function construct_layout(name, direction)
+ return {
+ name = name,
+ -- @p screen The screen number to tile
+ arrange = function(p) return fair(p, direction) end
+ }
end
--- Vertical fair layout.
--- @param screen The screen to arrange.
-uselessfair.name = "uselessfair"
-function uselessfair.arrange(p)
- return fair(p, "south")
-end
+-- Build layouts with different tile direction
+uselessfair.vertical = construct_layout("uselessfair", "south")
+uselessfair.horizontal = construct_layout("uselessfairh", "east")
+
+-- Module aliase
+uselessfair.arrange = uselessfair.vertical.arrange
+uselessfair.name = uselessfair.vertical.name
return uselessfair
projects / etc / awesome.git / blobdiff