Adds true transparency to AwesomeWM's wibox, so you can use fancy compositor features like blurs.

PKGBUILD

# $Id: PKGBUILD 97098 2013-09-12 18:19:17Z seblu $
# Maintainer: Sébastien Luttringer
# Contributor: xduugu
# Contributor: Ronald van Haren <ronald.archlinux.org>
# Contributor: Vesa Kaihlavirta

pkgname=awesome
pkgver=3.5.1
pkgrel=2
pkgdesc='Highly configurable framework window manager'
arch=('i686' 'x86_64')
url='http://awesome.naquadah.org/'
license=('GPL2')
depends=(
  'cairo'
  'dbus'
  'gdk-pixbuf2'
  'imlib2'
  'libxcursor'
  'libxdg-basedir'
  'lua'
  'lua-lgi'
  'pango'
  'startup-notification'
  'xcb-util-image'
  'xcb-util-keysyms'
  'xcb-util-wm'
  'xorg-xmessage'
)
makedepends=(
  'asciidoc'
  'cmake'
  'docbook-xsl'
  'doxygen'
  'imagemagick'
  'ldoc'
  'xmlto'
)
optdepends=(
  'rlwrap: readline support for awesome-client'
  'dex: autostart your desktop files'
  'vicious: widgets for the Awesome window manager'
)
provides=('notification-daemon')
source=("$url/download/$pkgname-$pkgver.tar.xz"
        "true-transparency.patch")
md5sums=('f528f66ddcdb07f24e6f494837371702'
         'dd8d3734c516a4ac25137121e975e46a')

prepare() {
  cd $pkgname-$pkgver
  patch -p1 -i "$srcdir/true-transparency.patch"
}

build() {
  cd $pkgname-$pkgver
  cmake \
    -DCMAKE_BUILD_TYPE=RELEASE \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DSYSCONFDIR=/etc \
    -DLUA_LIBRARY=/usr/lib/liblua.so.5.2
  make
}

package() {
  cd $pkgname-$pkgver
  make DESTDIR="$pkgdir" install
  # install desktop file so you can start awesome from your login manager
  install -Dm644 awesome.desktop "$pkgdir/usr/share/xsessions/awesome.desktop"
}

# vim:set ts=2 sw=2 et:

true-transparency.patch

From 1f48339f863609f89293e83b75ec25f2fea028ed Mon Sep 17 00:00:00 2001
From: Peter Lejeck <peter.lejeck@gmail.com>
Date: Thu, 12 Sep 2013 15:51:44 -0700
Subject: [PATCH] Add true transparency, instead of pseudotransparency

---
 lib/wibox/drawable.lua.in | 18 +++---------------
 1 file changed, 3 insertions(+), 15 deletions(-)

diff --git a/lib/wibox/drawable.lua.in b/lib/wibox/drawable.lua.in
index a31e618..c27f7dc 100644
--- a/lib/wibox/drawable.lua.in
+++ b/lib/wibox/drawable.lua.in
@@ -28,13 +28,9 @@ local function do_redraw(self)
 
     -- Draw the background
     cr:save()
-    -- This is pseudo-transparency: We draw the wallpaper in the background
-    local wallpaper = surface(capi.root.wallpaper())
-    if wallpaper then
-        cr.operator = cairo.Operator.SOURCE
-        cr:set_source_surface(wallpaper, -x, -y)
-        cr:paint()
-    end
+    -- This is real transparency: clear the canvas
+    cr.operator = cairo.Operator.CLEAR
+    cr:paint()
 
     cr.operator = cairo.Operator.OVER
     cr:set_source(self.background_color)
@@ -261,14 +257,6 @@ function drawable.new(d, widget_arg)
     return ret
 end
 
--- Redraw all drawables when the wallpaper changes
-capi.awesome.connect_signal("wallpaper_changed", function()
-    local k
-    for k in pairs(drawables) do
-        k()
-    end
-end)
-
 --- Handling of drawables. A drawable is something that can be drawn to.
 -- @class table
 -- @name drawable
-- 
1.8.4