add deck layout

layout/deck.lua

@@ -0,0 +1,56 @@
+local awful = require("awful")
+local gears = require("gears")
+local gcolor = require("gears.color")
+local beautiful = require("beautiful")
+
+local mylayout = {}
+
+mylayout.name = "deck"
+
+function mylayout.arrange(p)
+    local area = p.workarea
+    local t = p.tag or screen[p.screen].selected_tag
+    local client_count = #p.clients
+
+    if client_count == 1 then
+        local c = p.clients[1]
+        local g = {
+            x = area.x,
+            y = area.y,
+            width = area.width,
+            height = area.height,
+        }
+        p.geometries[c] = g
+        return
+    end
+
+    local xoffset = area.width * 0.1 / (client_count - 1)
+    local yoffset = area.height  * 0.1 / (client_count - 1)
+
+    for idx=1,client_count do
+        local c = p.clients[idx]
+        local g = {
+            x = area.x + (idx - 1) * xoffset,
+            y = area.y + (idx - 1) * yoffset,
+            width = area.width - (xoffset * (client_count - 1)),
+            height = area.height - (yoffset * (client_count - 1)),
+        }
+        p.geometries[c] = g
+    end
+end
+
+local icon_raw = gears.filesystem.get_configuration_dir() .. tostring(...):match("^.*bling"):gsub("%.", "/") .. "/icons/layouts/deck.png"
+
+local function get_icon()
+    if icon_raw ~= nil then
+        return gcolor.recolor_image(icon_raw, beautiful.fg_normal)
+    else
+        return nil
+    end
+end
+
+return {
+    layout = mylayout,
+    icon_raw = icon_raw,
+    get_icon = get_icon,
+}

layout/init.lua

@@ -15,12 +15,16 @@ beautiful.layout_centered = centered.get_icon()
 local equalarea = require(... .. ".equalarea")
 beautiful.layout_equalarea = equalarea.get_icon()
 
+local deck = require(... .. ".deck")
+beautiful.layout_deck = deck.get_icon()
+
 local layout = {
     mstab = mstab.layout,
     centered = centered.layout,
     vertical = vertical.layout,
     horizontal = horizontal.layout,
-    equalarea = equalarea.layout
+    equalarea = equalarea.layout,
+    deck = deck.layout
 }
 
 return layout