From 22d656903563f75678f3634964731ccf93355dfd Mon Sep 17 00:00:00 2001
From: ache <ache@ache.one>
Date: Mon, 13 Mar 2017 23:17:19 +0100
Subject: Init commit

---
 lain/layout/termfair.lua | 138 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 138 insertions(+)
 create mode 100644 lain/layout/termfair.lua

(limited to 'lain/layout/termfair.lua')

diff --git a/lain/layout/termfair.lua b/lain/layout/termfair.lua
new file mode 100644
index 0000000..4e45eec
--- /dev/null
+++ b/lain/layout/termfair.lua
@@ -0,0 +1,138 @@
+
+--[[
+                                                  
+     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 math      = { ceil  = math.ceil,
+                    floor = math.floor,
+                    max   = math.max }
+local tonumber  = tonumber
+
+local termfair  = { name = "termfair" }
+
+function termfair.arrange(p)
+    -- Layout with fixed number of vertical columns (read from nmaster).
+    -- New windows align from left to right. When a row is full, a now
+    -- one above it is created. Like this:
+
+    --        (1)                (2)                (3)
+    --   +---+---+---+      +---+---+---+      +---+---+---+
+    --   |   |   |   |      |   |   |   |      |   |   |   |
+    --   | 1 |   |   |  ->  | 2 | 1 |   |  ->  | 3 | 2 | 1 |  ->
+    --   |   |   |   |      |   |   |   |      |   |   |   |
+    --   +---+---+---+      +---+---+---+      +---+---+---+
+
+    --        (4)                (5)                (6)
+    --   +---+---+---+      +---+---+---+      +---+---+---+
+    --   | 4 |   |   |      | 5 | 4 |   |      | 6 | 5 | 4 |
+    --   +---+---+---+  ->  +---+---+---+  ->  +---+---+---+
+    --   | 3 | 2 | 1 |      | 3 | 2 | 1 |      | 3 | 2 | 1 |
+    --   +---+---+---+      +---+---+---+      +---+---+---+
+
+    -- 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))
+
+    -- How many vertical columns?
+    local t = tag.selected(p.screen)
+    local num_x = termfair.nmaster or tag.getnmaster(t)
+
+    -- Do at least "desired_y" rows.
+    local desired_y = termfair.ncol or tag.getncol(t)
+
+    if #cls > 0
+    then
+        local num_y = math.max(math.ceil(#cls / num_x), desired_y)
+        local cur_num_x = num_x
+        local at_x = 0
+        local at_y = 0
+        local remaining_clients = #cls
+        local width = math.floor(wa.width / num_x)
+        local height = math.floor(wa.height / num_y)
+
+        -- We start the first row. Left-align by limiting the number of
+        -- available slots.
+        if remaining_clients < num_x
+        then
+            cur_num_x = remaining_clients
+        end
+
+        -- Iterate in reversed order.
+        for i = #cls,1,-1
+        do
+            -- Get x and y position.
+            local c = cls[i]
+            local this_x = cur_num_x - at_x - 1
+            local this_y = num_y - at_y - 1
+
+            -- Calc geometry.
+            local g = {}
+            if this_x == (num_x - 1)
+            then
+                g.width = wa.width - (num_x - 1) * width - useless_gap
+            else
+                g.width = width - useless_gap
+            end
+            if this_y == (num_y - 1)
+            then
+                g.height = wa.height - (num_y - 1) * height - useless_gap
+            else
+                g.height = height - useless_gap
+            end
+
+            g.x = wa.x + this_x * width + global_border
+            g.y = wa.y + this_y * height + global_border
+
+            if useless_gap > 0
+            then
+                -- All clients tile evenly.
+                g.x = g.x + (useless_gap / 2)
+                g.y = g.y + (useless_gap / 2)
+
+            end
+            c:geometry(g)
+            remaining_clients = remaining_clients - 1
+
+            -- Next grid position.
+            at_x = at_x + 1
+            if at_x == num_x
+            then
+                -- Row full, create a new one above it.
+                at_x = 0
+                at_y = at_y + 1
+
+                -- We start a new row. Left-align.
+                if remaining_clients < num_x
+                then
+                    cur_num_x = remaining_clients
+                end
+            end
+        end
+    end
+end
+
+return termfair
-- 
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