awful.screen: fix padding

Signed-off-by: Gregor Best <gbe@intepi.net>
Signed-off-by: Julien Danjou <julien@danjou.info>

lib/awful/layout/init.lua.in

@@ -71,7 +71,7 @@ function arrange(screen)
     local p = {}
     p.workarea = capi.screen[screen].workarea
     -- Handle padding
-    local padding = ascreen.padding(screen)
+    local padding = ascreen.padding(capi.screen[screen])
     if padding then
         p.workarea.x = p.workarea.x + (padding.left or 0)
         p.workarea.y = p.workarea.y + (padding.top or 0)
@@ -140,7 +140,9 @@ for s = 1, capi.screen.count() do
     capi.screen[s]:add_signal("tag::detach", function (screen, tag)
         arrange(screen.index)
     end)
-    capi.screen[s]:add_signal("padding", arrange)
+    capi.screen[s]:add_signal("padding", function (screen)
+        arrange(screen.index)
+    end)
 end
 
 capi.client.add_signal("focus", function(c) arrange(c.screen) end)

lib/awful/screen.lua.in

@@ -39,15 +39,15 @@ function focus_relative(i)
 end
 
 --- Get or set the screen padding.
--- @param i The screen number.
+-- @param screen The screen object to change the padding on
 -- @param padding The padding, an table with 'top', 'left', 'right' and/or
 -- 'bottom'. Can be nil if you only want to retrieve padding
-function padding(i, padding)
+function padding(screen, padding)
     if padding then
-        data.padding[i] = padding
-        capi.screen[i]:emit_signal("padding")
+        data.padding[screen] = padding
+        screen:emit_signal("padding")
     end
-    return data.padding[i]
+    return data.padding[screen]
 end
 
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