1 files changed, 80 insertions, 0 deletions
diff --git a/lain/layout/cascade.lua b/lain/layout/cascade.lua
new file mode 100644
index 0000000..999c599
--- /dev/null
+++ b/lain/layout/cascade.lua
@@ -0,0 +1,80 @@
+
+--[[
+                                                  
+     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 cascade =
+{
+    name     = "cascade",
+    nmaster  = 0,
+    offset_x = 32,
+    offset_y = 8
+}
+
+function cascade.arrange(p)
+
+    -- Cascade windows.
+
+    -- 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
+
+    wa.height = wa.height - ((global_border * 2) + (bw * 2))
+    wa.width = wa.width - ((global_border * 2) + (bw * 2))
+    wa.x = wa.x + global_border
+    wa.y = wa.y + global_border
+
+    -- Opening a new window will usually force all existing windows to
+    -- get resized. This wastes a lot of CPU time. So let's set a lower
+    -- bound to "how_many": This wastes a little screen space but you'll
+    -- get a much better user experience.
+    local t = tag.selected(p.screen)
+    local num_c
+    if cascade.nmaster > 0
+    then
+        num_c = cascade.nmaster
+    else
+        num_c = tag.getnmaster(t)
+    end
+
+    local how_many = #cls
+    if how_many < num_c
+    then
+        how_many = num_c
+    end
+
+    local current_offset_x = cascade.offset_x * (how_many - 1)
+    local current_offset_y = cascade.offset_y * (how_many - 1)
+
+    -- Iterate.
+    for i = 1,#cls,1
+    do
+        local c = cls[i]
+        local g = {}
+
+        g.x = wa.x + (how_many - i) * cascade.offset_x
+        g.y = wa.y + (i - 1) * cascade.offset_y
+        g.width = wa.width - current_offset_x
+        g.height = wa.height - current_offset_y
+
+        c:geometry(g)
+    end
+end
+
+return cascade