awful.layout: do not pass specific param in arrange (FS#541)

Signed-off-by: Julien Danjou <julien@danjou.info>

lib/awful/layout/init.lua.in

@@ -65,7 +65,6 @@ end
 
 -- Register an arrange hook.
 local function on_arrange (screen)
-    local t = tag.selected(screen)
     local p = {}
     p.workarea = wibox.get_workarea(screen)
     -- Handle padding
@@ -78,10 +77,6 @@ local function on_arrange (screen)
     end
     p.geometry = capi.screen[screen].geometry
     p.clients = client.tiled(screen)
-    p.ncol = tag.getncol(t)
-    p.nmaster = tag.getnmaster(t)
-    p.mwfact = tag.getmwfact(t)
-    p.tagdata = tag.getdata(t)
     p.screen = screen
     get(screen).arrange(p)
 end

lib/awful/layout/suit/magnifier.lua.in

@@ -23,7 +23,7 @@ function arrange(p)
     local area = p.workarea
     local cls = p.clients
     local focus = capi.client.focus
-    local mwfact = p.mwfact
+    local mwfact = tag.getmwfact(tag.selected(p.screen))
     local fidx
 
     -- Check that the focused window is on the right screen

lib/awful/layout/suit/tile.lua.in

@@ -9,6 +9,7 @@
 -- Grab environment we need
 local ipairs = ipairs
 local math = math
+local tag = require("awful.tag")
 
 --- Tiled layouts module for awful
 module("awful.layout.suit.tile")
@@ -72,6 +73,7 @@ local function tile_group(cls, wa, orientation, fact, group)
 end
 
 local function tile(param, orientation)
+    local t = tag.selected(param.screen)
     orientation = orientation or "right"
 
     -- this handles are different orientations
@@ -87,18 +89,18 @@ local function tile(param, orientation)
     end
 
     local cls = param.clients
-    local nmaster = math.min(param.nmaster, #cls)
+    local nmaster = math.min(tag.getnmaster(t), #cls)
     local nother = math.max(#cls - nmaster,0)
 
-    local mwfact = param.mwfact
+    local mwfact = tag.getmwfact(t)
     local wa = param.workarea
-    local ncol = param.ncol
+    local ncol = tag.getncol(t)
 
-    local data = param.tagdata.windowfact
+    local data = tag.getdata(t).windowfact
 
     if not data then
         data = {}
-        param.tagdata.windowfact = data
+        tag.getdata(t).windowfact = data
     end
 
     local coord = wa[x]