resize

keybindings: Fix ungrabs possibly failing after switching keymaps
We need to resolve the keycode from the keysym again since the keycode might have changed if there was a keymap switch between the grab and the ungrab.
2014-03-05 17:52:57 -05:00 · 2014-03-04 21:13:15 +01:00 · 2014-03-04 21:13:13 +01:00 · 2014-03-04 15:53:36 +01:00 · 2014-03-04 15:51:17 +01:00 · 2014-03-04 15:46:06 +01:00
187 changed files with 10676 additions and 12427 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -79,10 +79,10 @@ src/meta-dbus-xrandr.[ch]
 src/meta-dbus-idle-monitor.[ch]
 src/mutter-plugins.pc
 src/wayland/gtk-shell-protocol.c
-src/wayland/gtk-shell-client-protocol.h
 src/wayland/gtk-shell-server-protocol.h
+src/wayland/xdg-shell-protocol.c
+src/wayland/xdg-shell-server-protocol.h
 src/wayland/xserver-protocol.c
-src/wayland/xserver-client-protocol.h
 src/wayland/xserver-server-protocol.h
 doc/reference/*.args
 doc/reference/*.bak
--- a/41
+++ b/41
@@ -1,12 +1,12 @@
-		    GNU GENERAL PUBLIC LICENSE
-		       Version 2, June 1991
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991

- Copyright (C) 1989, 1991 Free Software Foundation, Inc.
-     59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.

-			    Preamble
+                            Preamble

  The licenses for most software are designed to take away your
 freedom to share and change it.  By contrast, the GNU General Public
@@ -15,7 +15,7 @@ software--to make sure the software is free for all its users.  This
 General Public License applies to most of the Free Software
 Foundation's software and to any other program whose authors commit to
 using it.  (Some other Free Software Foundation software is covered by
-the GNU Library General Public License instead.)  You can apply it to
+the GNU Lesser General Public License instead.)  You can apply it to
 your programs, too.

  When we speak of free software, we are referring to freedom, not
@@ -55,8 +55,8 @@ patent must be licensed for everyone's free use or not licensed at all.

  The precise terms and conditions for copying, distribution and
 modification follow.
-
-		    GNU GENERAL PUBLIC LICENSE
+
+                    GNU GENERAL PUBLIC LICENSE
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

  0. This License applies to any program or other work which contains
@@ -110,7 +110,7 @@ above, provided that you also meet all of these conditions:
    License.  (Exception: if the Program itself is interactive but
    does not normally print such an announcement, your work based on
    the Program is not required to print an announcement.)
-
+
 These requirements apply to the modified work as a whole.  If
 identifiable sections of that work are not derived from the Program,
 and can be reasonably considered independent and separate works in
@@ -168,7 +168,7 @@ access to copy from a designated place, then offering equivalent
 access to copy the source code from the same place counts as
 distribution of the source code, even though third parties are not
 compelled to copy the source along with the object code.
-
+
  4. You may not copy, modify, sublicense, or distribute the Program
 except as expressly provided under this License.  Any attempt
 otherwise to copy, modify, sublicense or distribute the Program is
@@ -225,7 +225,7 @@ impose that choice.

 This section is intended to make thoroughly clear what is believed to
 be a consequence of the rest of this License.
-
+
  8. If the distribution and/or use of the Program is restricted in
 certain countries either by patents or by copyrighted interfaces, the
 original copyright holder who places the Program under this License
@@ -255,7 +255,7 @@ make exceptions for this.  Our decision will be guided by the two goals
 of preserving the free status of all derivatives of our free software and
 of promoting the sharing and reuse of software generally.

-			    NO WARRANTY
+                            NO WARRANTY

  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
@@ -277,9 +277,9 @@ YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
 POSSIBILITY OF SUCH DAMAGES.

-		     END OF TERMS AND CONDITIONS
-
-	    How to Apply These Terms to Your New Programs
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs

  If you develop a new program, and you want it to be of the greatest
 possible use to the public, the best way to achieve this is to make it
@@ -303,17 +303,16 @@ the "copyright" line and a pointer to where the full notice is found.
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

 Also add information on how to contact you by electronic and paper mail.

 If the program is interactive, make it output a short notice like this
 when it starts in an interactive mode:

-    Gnomovision version 69, Copyright (C) year  name of author
+    Gnomovision version 69, Copyright (C) year name of author
    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.
@@ -336,5 +335,5 @@ necessary.  Here is a sample; alter the names:
 This General Public License does not permit incorporating your program into
 proprietary programs.  If your program is a subroutine library, you may
 consider it more useful to permit linking proprietary applications with the
-library.  If this is what you want to do, use the GNU Library General
+library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.
--- a/Makefile.am
+++ b/Makefile.am
@@ -6,3 +6,5 @@ EXTRA_DIST = HACKING MAINTAINERS rationales.txt
 DISTCLEANFILES = intltool-extract intltool-merge intltool-update po/stamp-it po/.intltool-merge-cache

 DISTCHECK_CONFIGURE_FLAGS = --enable-gtk-doc
+
+ACLOCAL_AMFLAGS = -I m4 ${ACLOCAL_FLAGS}
--- a/103
+++ b/103
@@ -1,3 +1,106 @@
+3.11.90
+=======
+* Fix double-scaling on high DPI resolutions [Adel; #723931]
+* Make tile previews a compositor effect [Stefano, Florian; #665758]
+* Misc. bug fixes and cleanups [Ryan, Giovanni, Jasper, Adel; #722530, #724257,
+  #724258, #720631, #724364, #724472]
+
+Contributors:
+  Giovanni Campagna, Marek Chalupa, Stefano Facchini, Adel Gadllah,
+  Ryan Lortie, Florian Müllner, Jasper St. Pierre, Rico Tzschichholz
+
+3.11.5
+======
+* Fix CSD titlebars being placed off-screen [Jasper; #719772]
+* Add support for subsurfaces [Jonas; #705502]
+* Expose MetaWindow:skip-taskbar property [Florian; #723307]
+* Fix legacy tray icons showing up blank [Adel; #721596]
+* Fix configuration of cloned monitors [Adel; #710610]
+* Misc bug fixes and cleanups [Jasper, Adel, Marek, Jonas; #720631, #723468,
+  #720818, #723563, #723564]
+
+Contributors:
+  Jonas Ådahl, Marek Ch, Adel Gadllah, Florian Müllner, Jasper St. Pierre
+
+3.11.4
+======
+* Don't leave focus on windows that are being unmanaged [Owen; #711618]
+* Reduce server grabs [Daniel Drake; #721345, #721709]
+* Improve heuristic to determine display output name [Cosimo Cecchi; #721674]
+* Atomically unmaximize both directions [Jasper; #722108]
+* Misc bug fixes [Debarshi, Andika, Florian; #721517, #721674, #722347]
+
+Contributors:
+  Cosimo Cecchi, Daniel Drake, Florian Müllner, Debarshi Ray, Jasper St. Pierre,
+  Andika Triwidada, Owen W. Taylor
+
+3.11.3
+======
+* Fix focus issues with external OSKs[Jasper; #715030]
+* Add a MetaCullable interface [Jasper; #714706]
+* Fix window keybindings [Rui; #719724]
+* Fix settings keyboard/pointer focus for new clients [Rui; #719725]
+* Fix window group paint volume [Owen; #719669]
+* Fix frame extents problems [Owen; #714707]
+* Add shortcut to move windows between monitors [Florian; #671054]
+* Fix problems with focus tracking [Owen; #720558]
+* Misc. bug fixes and cleanups: [Rui, Colin, Lionel, Jasper, Owen; #712833,
+  #719557, #719695, #719833, #678989, #720417, #720630]
+
+Contributors:
+  Lionel Landwerlin, Rui Matos, Alberto Milone, Florian Müllner,
+  Jasper St. Pierre, Rico Tzschichholz, Owen W. Taylor, Colin Walters
+
+3.11.2
+======
+* Support setting a NULL opaque region [Andreas; #711518]
+* Sync keymap from X to wayland [Giovanni; #707446]
+* Implement support for subsurfaces [Jonas; #705502]
+* Don't focus the no-focus-window for globally active windows [Jasper; #710296]
+* Support "hotplug_mode_update" property [Marc-André; #711216]
+* Fix resize operations using mouse-button-modifier [Lionel; #710251]
+* Fix position of attached modals for CSD windows [Giovanni, Owen; #707194]
+* Misc. bug fixes [Rui, Jasper, Neil, Florian; #712247, #711731]
+
+Contributors:
+  Giovanni Campagna, Andreas Heider, Lionel Landwerlin, Marc-André Lureau,
+  Rui Matos, Florian Müllner, Neil Roberts, Sindhu S, Jasper St. Pierre,
+  Rico Tzschichholz, Owen W. Taylor, Jonas Ådahl
+
+3.11.1
+======
+* Fix tile previews getting stuck on right click during drags [Lionel; #704759]
+* Use new UPower API [Bastien]
+* Set hot spot when cursor set from wl_buffer [Jonas; #709593]
+* Expose min-backlight-step [Asad; #710380]
+* Misc. bug fixes and cleanups [Jasper, Olav, Magdalen; #709776]
+
+Contributors:
+  Magdalen Berns, Lionel Landwerlin, Asad Mehmood, Bastien Nocera,
+  Jasper St. Pierre, Olav Vitters, Jonas Ådahl
+
+3.10.1
+======
+* Don't apply fullscreen workarounds to CSD windows [Giovanni; #708718]
+* Fix hangs during DND operations [Adel; #709340]
+* Misc bug fixes [Dan, Giovanni, Jasper; #708813, #708420]
+
+Contributors:
+  Giovanni Campagna, Adel Gadllah, Dan Horák, Hans Petter Jansson,
+  Jasper St. Pierre
+
+3.10.0.1
+========
+* Fix bug when a window changed size twice in a single frame - this
+  can happen with GTK+ client-side decorations [Giovanni, Owen; #708367]
+
+Contributors:
+  Giovanni Campagna, Owen Taylor
+
+3.10.0
+======
+* Update dependencies [Giovanni; #708210]
+
 3.9.92
 ======
 * Constrain the pointer position onto visible monitors [Giovanni; #706655]
--- a/autogen.sh
+++ b/autogen.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 # Run this to generate all the initial makefiles, etc.

 srcdir=`dirname $0`
--- a/configure.ac
+++ b/configure.ac
@@ -1,8 +1,9 @@
 AC_PREREQ(2.50)
+AC_CONFIG_MACRO_DIR([m4])

 m4_define([mutter_major_version], [3])
-m4_define([mutter_minor_version], [9])
-m4_define([mutter_micro_version], [92])
+m4_define([mutter_minor_version], [11])
+m4_define([mutter_micro_version], [90])

 m4_define([mutter_version],
          [mutter_major_version.mutter_minor_version.mutter_micro_version])
@@ -77,9 +78,9 @@ MUTTER_PC_MODULES="
   cairo >= 1.10.0
   gsettings-desktop-schemas >= 3.7.3
   xcomposite >= 0.2 xfixes xrender xdamage xi >= 1.6.0
-   $CLUTTER_PACKAGE >= 1.14.3
-   cogl-1.0 >= 1.13.3
-   upower-glib > 0.9.11
+   $CLUTTER_PACKAGE >= 1.17.5
+   cogl-1.0 >= 1.17.1
+   upower-glib >= 0.99.0
   gnome-desktop-3.0
 "

@@ -211,16 +212,13 @@ fi

 MUTTER_PC_MODULES="$MUTTER_PC_MODULES xcursor"

-# We always build with wayland enabled
-AC_DEFINE(HAVE_WAYLAND, , [Building with Wayland support])
-
 AC_PATH_PROG([WAYLAND_SCANNER],[wayland-scanner],[no])
 AS_IF([test "x$WAYLAND_SCANNER" = "xno"],
  AC_MSG_ERROR([Could not find wayland-scanner in your PATH, required for parsing wayland extension protocols]))
 AC_SUBST([WAYLAND_SCANNER])
 AC_SUBST(XWAYLAND_PATH)

-MUTTER_PC_MODULES="$MUTTER_PC_MODULES wayland-server libdrm"
+MUTTER_PC_MODULES="$MUTTER_PC_MODULES clutter-wayland-1.0 clutter-wayland-compositor-1.0 clutter-egl-1.0 wayland-server libdrm"
 PKG_CHECK_MODULES(MUTTER, $MUTTER_PC_MODULES)

 PKG_CHECK_EXISTS([xi >= 1.6.99.1],
--- a/doc/reference/Makefile.am
+++ b/doc/reference/Makefile.am
@@ -49,8 +49,8 @@ FIXXREF_OPTIONS=
 # Used for dependencies. The docs will be rebuilt if any of these change.
 # e.g. HFILE_GLOB=$(top_srcdir)/gtk/*.h
 # e.g. CFILE_GLOB=$(top_srcdir)/gtk/*.c
-HFILE_GLOB=$(top_srcdir)/src/*.h
-CFILE_GLOB=$(top_srcdir)/src/*.c
+HFILE_GLOB=$(top_srcdir)/src/*/*.h
+CFILE_GLOB=$(top_srcdir)/src/*/*.c

 # Extra header to include when scanning, which are not under DOC_SOURCE_DIR
 # e.g. EXTRA_HFILES=$(top_srcdir}/contrib/extra.h
--- a/doc/reference/meta-sections.txt
+++ b/doc/reference/meta-sections.txt
@@ -96,8 +96,6 @@ meta_compositor_hide_window
 meta_compositor_switch_workspace
 meta_compositor_maximize_window
 meta_compositor_unmaximize_window
-meta_compositor_window_mapped
-meta_compositor_window_unmapped
 meta_compositor_sync_window_geometry
 meta_compositor_set_updates_frozen
 meta_compositor_queue_frame_drawn
@@ -207,7 +205,6 @@ meta_key_binding_get_modifiers
 meta_key_binding_get_mask
 meta_key_binding_is_builtin
 meta_keybindings_set_custom_handler
-meta_keybindings_switch_window
 meta_screen_ungrab_all_keys
 meta_screen_grab_all_keys
 </SECTION>
@@ -389,6 +386,23 @@ MetaWindowActorPrivate
 meta_window_actor_get_type
 </SECTION>

+<SECTION>
+<FILE>meta-cullable</FILE>
+<TITLE>MetaCullable</TITLE>
+MetaCullable
+MetaCullableInterface
+meta_cullable_cull_out
+meta_cullable_reset_culling
+meta_cullable_cull_out_children
+meta_cullable_reset_culling_children
+<SUBSECTION Standard>
+META_TYPE_CULLABLE
+META_CULLABLE
+META_IS_CULLABLE
+META_CULLABLE_GET_IFACE
+meta_cullable_get_type
+</SECTION>
+
 <SECTION>
 <FILE>prefs</FILE>
 MetaPreference
@@ -542,7 +556,10 @@ meta_window_is_override_redirect
 meta_window_is_skip_taskbar
 meta_window_get_rect
 meta_window_get_input_rect
+meta_window_get_frame_rect
 meta_window_get_outer_rect
+meta_window_client_rect_to_frame_rect
+meta_window_frame_rect_to_client_rect
 meta_window_get_screen
 meta_window_get_display
 meta_window_get_xwindow
--- a/mutter.doap
+++ b/mutter.doap
@@ -21,6 +21,7 @@ environment.</description>
  -->
  <mailing-list rdf:resource="http://mail.gnome.org/mailman/listinfo/gnome-shell-list" />
  <download-page rdf:resource="http://download.gnome.org/sources/mutter/" />
+  <download-page rdf:resource="http://download.gnome.org/sources/mutter-wayland/" />
  <bug-database rdf:resource="http://bugzilla.gnome.org/browse.cgi?product=mutter" />

  <category rdf:resource="http://api.gnome.org/doap-extensions#desktop" />
--- a/protocol/Makefile.am
+++ b/protocol/Makefile.am
@@ -1 +1,7 @@
-EXTRA_DIST = xserver.xml
+NULL =
+
+EXTRA_DIST = \
+	gtk-shell.xml \
+	xdg-shell.xml \
+	xserver.xml \
+	$(NULL)
--- a/protocol/xdg-shell.xml
+++ b/protocol/xdg-shell.xml
@@ -0,0 +1,467 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<protocol name="xdg_shell">
+
+  <copyright>
+    Copyright © 2008-2013 Kristian Høgsberg
+    Copyright © 2013      Rafael Antognolli
+    Copyright © 2013      Jasper St. Pierre
+    Copyright © 2010-2013 Intel Corporation
+
+    Permission to use, copy, modify, distribute, and sell this
+    software and its documentation for any purpose is hereby granted
+    without fee, provided that the above copyright notice appear in
+    all copies and that both that copyright notice and this permission
+    notice appear in supporting documentation, and that the name of
+    the copyright holders not be used in advertising or publicity
+    pertaining to distribution of the software without specific,
+    written prior permission.  The copyright holders make no
+    representations about the suitability of this software for any
+    purpose.  It is provided "as is" without express or implied
+    warranty.
+
+    THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+    SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+    FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+    SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+    AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+    ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+    THIS SOFTWARE.
+  </copyright>
+
+  <interface name="xdg_shell" version="1">
+    <description summary="create desktop-style surfaces">
+      This interface is implemented by servers that provide
+      desktop-style user interfaces.
+
+      It allows clients to associate a xdg_surface with
+      a basic surface.
+    </description>
+
+    <enum name="version">
+      <description summary="latest protocol version">
+	Use this enum to check the protocol version, and it will be updated
+	automatically.
+      </description>
+      <entry name="current" value="2" summary="Always the latest version"/>
+    </enum>
+
+
+    <request name="use_unstable_version">
+      <description summary="enable use of this unstable version">
+	Use this request in order to enable use of this interface.
+
+	Understand and agree that one is using an unstable interface,
+	that will likely change in the future, breaking the API.
+      </description>
+      <arg name="version" type="int"/>
+    </request>
+
+    <request name="get_xdg_surface">
+      <description summary="create a shell surface from a surface">
+	Create a shell surface for an existing surface.
+
+	Only one shell or popup surface can be associated with a given
+	surface.
+      </description>
+      <arg name="id" type="new_id" interface="xdg_surface"/>
+      <arg name="surface" type="object" interface="wl_surface"/>
+    </request>
+
+    <request name="get_xdg_popup">
+      <description summary="create a shell surface from a surface">
+	Create a popup surface for an existing surface.
+
+	Only one shell or popup surface can be associated with a given
+	surface.
+      </description>
+      <arg name="id" type="new_id" interface="xdg_popup"/>
+      <arg name="surface" type="object" interface="wl_surface"/>
+      <arg name="parent" type="object" interface="wl_surface"/>
+      <arg name="seat" type="object" interface="wl_seat" summary="the wl_seat whose pointer is used"/>
+      <arg name="serial" type="uint" summary="serial of the implicit grab on the pointer"/>
+      <arg name="x" type="int"/>
+      <arg name="y" type="int"/>
+      <arg name="flags" type="uint"/>
+    </request>
+
+    <event name="ping">
+      <description summary="check if the client is alive">
+        The ping event asks the client if it's still alive. Pass the
+        serial specified in the event back to the compositor by sending
+        a "pong" request back with the specified serial.
+
+        Compositors can use this to determine if the client is still
+        alive. It's unspecified what will happen if the client doesn't
+        respond to the ping request, or in what timeframe. Clients should
+        try to respond in a reasonable amount of time.
+      </description>
+      <arg name="serial" type="uint" summary="pass this to the callback"/>
+    </event>
+
+    <request name="pong">
+      <description summary="respond to a ping event">
+	A client must respond to a ping event with a pong request or
+	the client may be deemed unresponsive.
+      </description>
+      <arg name="serial" type="uint" summary="serial of the ping event"/>
+    </request>
+  </interface>
+
+  <interface name="xdg_surface" version="1">
+
+    <description summary="desktop-style metadata interface">
+      An interface that may be implemented by a wl_surface, for
+      implementations that provide a desktop-style user interface.
+
+      It provides requests to treat surfaces like windows, allowing to set
+      properties like maximized, fullscreen, minimized, and to move and resize
+      them, and associate metadata like title and app id.
+
+      On the server side the object is automatically destroyed when
+      the related wl_surface is destroyed.  On client side,
+      xdg_surface.destroy() must be called before destroying
+      the wl_surface object.
+    </description>
+
+    <request name="destroy" type="destructor">
+      <description summary="remove xdg_surface interface">
+	The xdg_surface interface is removed from the wl_surface object
+	that was turned into a xdg_surface with
+	xdg_shell.get_xdg_surface request. The xdg_surface properties,
+	like maximized and fullscreen, are lost. The wl_surface loses
+	its role as a xdg_surface. The wl_surface is unmapped.
+      </description>
+    </request>
+
+    <request name="set_transient_for">
+      <description summary="surface is a child of another surface">
+	Setting a surface as transient of another means that it is child
+	of another surface.
+
+	Child surfaces are stacked above their parents, and will be
+	unmapped if the parent is unmapped too. They should not appear
+	on task bars and alt+tab.
+      </description>
+      <arg name="parent" type="object" interface="wl_surface" allow-null="true"/>
+    </request>
+
+    <request name="set_margin">
+      <description summary="set the visible frame boundaries">
+        This tells the compositor what the visible size of the window
+        should be, so it can use it to determine what borders to use for
+        constrainment and alignment.
+
+        CSD often has invisible areas for decoration purposes, like drop
+        shadows. These "shadow" drawings need to be subtracted out of the
+        normal boundaries of the window when computing where to place
+        windows (e.g. to set this window so it's centered on top of another,
+        or to put it to the left or right of the screen.)
+
+        This value should change as little as possible at runtime, to
+        prevent flicker.
+
+        This value is also ignored when the window is maximized or
+        fullscreen, and assumed to be 0.
+
+        If never called, this value is assumed to be 0.
+      </description>
+      <arg name="left_margin" type="int"/>
+      <arg name="right_margin" type="int"/>
+      <arg name="top_margin" type="int"/>
+      <arg name="bottom_margin" type="int"/>
+    </request>
+
+    <request name="set_title">
+      <description summary="set surface title">
+	Set a short title for the surface.
+
+	This string may be used to identify the surface in a task bar,
+	window list, or other user interface elements provided by the
+	compositor.
+
+	The string must be encoded in UTF-8.
+      </description>
+      <arg name="title" type="string"/>
+    </request>
+
+    <request name="set_app_id">
+      <description summary="set surface class">
+	Set an id for the surface.
+
+	The app id identifies the general class of applications to which
+	the surface belongs.
+
+	It should be the ID that appears in the new desktop entry
+	specification, the interface name.
+      </description>
+      <arg name="app_id" type="string"/>
+    </request>
+
+    <request name="move">
+      <description summary="start an interactive move">
+	Start a pointer-driven move of the surface.
+
+	This request must be used in response to a button press event.
+	The server may ignore move requests depending on the state of
+	the surface (e.g. fullscreen or maximized).
+      </description>
+      <arg name="seat" type="object" interface="wl_seat" summary="the wl_seat whose pointer is used"/>
+      <arg name="serial" type="uint" summary="serial of the implicit grab on the pointer"/>
+    </request>
+
+    <enum name="resize_edge">
+      <description summary="edge values for resizing">
+	These values are used to indicate which edge of a surface
+	is being dragged in a resize operation. The server may
+	use this information to adapt its behavior, e.g. choose
+	an appropriate cursor image.
+      </description>
+      <entry name="none" value="0"/>
+      <entry name="top" value="1"/>
+      <entry name="bottom" value="2"/>
+      <entry name="left" value="4"/>
+      <entry name="top_left" value="5"/>
+      <entry name="bottom_left" value="6"/>
+      <entry name="right" value="8"/>
+      <entry name="top_right" value="9"/>
+      <entry name="bottom_right" value="10"/>
+    </enum>
+
+    <request name="resize">
+      <description summary="start an interactive resize">
+	Start a pointer-driven resizing of the surface.
+
+	This request must be used in response to a button press event.
+	The server may ignore resize requests depending on the state of
+	the surface (e.g. fullscreen or maximized).
+      </description>
+      <arg name="seat" type="object" interface="wl_seat" summary="the wl_seat whose pointer is used"/>
+      <arg name="serial" type="uint" summary="serial of the implicit grab on the pointer"/>
+      <arg name="edges" type="uint" summary="which edge or corner is being dragged"/>
+    </request>
+
+    <event name="configure">
+      <description summary="suggest resize">
+	The configure event asks the client to resize its surface.
+
+	The size is a hint, in the sense that the client is free to
+	ignore it if it doesn't resize, pick a smaller size (to
+	satisfy aspect ratio or resize in steps of NxM pixels).
+
+	The client is free to dismiss all but the last configure
+	event it received.
+
+	The width and height arguments specify the size of the window
+	in surface local coordinates.
+      </description>
+
+      <arg name="width" type="int"/>
+      <arg name="height" type="int"/>
+    </event>
+
+    <request name="set_output">
+      <description summary="set the default output used by this surface">
+	Set the default output used by this surface when it is first mapped.
+
+	If this value is NULL (default), it's up to the compositor to choose
+	which display will be used to map this surface.
+
+	When fullscreen or maximized state are set on this surface, and it
+	wasn't mapped yet, the output set with this method will be used.
+	Otherwise, the output where the surface is currently mapped will be
+	used.
+      </description>
+      <arg name="output" type="object" interface="wl_output" allow-null="true"/>
+    </request>
+
+    <event name="request_set_fullscreen">
+      <description summary="server requests that the client set fullscreen">
+	Event sent from the compositor to the client requesting that the client
+	goes to a fullscreen state. It's the client job to call set_fullscreen
+	and really trigger the fullscreen state.
+      </description>
+    </event>
+
+    <event name="request_unset_fullscreen">
+      <description summary="server requests that the client unset fullscreen">
+	Event sent from the compositor to the client requesting that the client
+	leaves the fullscreen state. It's the client job to call
+	unset_fullscreen and really leave the fullscreen state.
+      </description>
+    </event>
+
+    <request name="set_fullscreen">
+      <description summary="set the surface state as fullscreen">
+	Set the surface as fullscreen.
+
+	After this request, the compositor should send a configure event
+	informing the output size.
+
+	This request informs the compositor that the next attached buffer
+	committed will be in a fullscreen state. The buffer size should be the
+	same size as the size informed in the configure event, if the client
+	doesn't want to leave any empty area.
+
+	In other words: the next attached buffer after set_maximized is the new
+	maximized buffer. And the surface will be positioned at the maximized
+	position on commit.
+
+	A simple way to synchronize and wait for the correct configure event is
+	to use a wl_display.sync request right after the set_fullscreen
+	request. When the sync callback returns, the last configure event
+	received just before it will be the correct one, and should contain the
+	right size for the surface to maximize.
+
+	Setting one state won't unset another state. Use
+	xdg_surface.unset_fullscreen for unsetting it.
+      </description>
+    </request>
+
+    <request name="unset_fullscreen">
+      <description summary="unset the surface state as fullscreen">
+	Unset the surface fullscreen state.
+
+	Same negotiation as set_fullscreen must be used.
+      </description>
+    </request>
+
+    <event name="request_set_maximized">
+      <description summary="server requests that the client set maximized">
+	Event sent from the compositor to the client requesting that the client
+	goes to a maximized state. It's the client job to call set_maximized
+	and really trigger the maximized state.
+      </description>
+    </event>
+
+    <event name="request_unset_maximized">
+      <description summary="server requests that the client unset maximized">
+	Event sent from the compositor to the client requesting that the client
+	leaves the maximized state. It's the client job to call unset_maximized
+	and really leave the maximized state.
+      </description>
+    </event>
+
+    <request name="set_maximized">
+      <description summary="set the surface state as maximized">
+	Set the surface as maximized.
+
+	After this request, the compositor will send a configure event
+	informing the output size minus panel and other MW decorations.
+
+	This request informs the compositor that the next attached buffer
+	committed will be in a maximized state. The buffer size should be the
+	same size as the size informed in the configure event, if the client
+	doesn't want to leave any empty area.
+
+	In other words: the next attached buffer after set_maximized is the new
+	maximized buffer. And the surface will be positioned at the maximized
+	position on commit.
+
+	A simple way to synchronize and wait for the correct configure event is
+	to use a wl_display.sync request right after the set_maximized request.
+	When the sync callback returns, the last configure event received just
+	before it will be the correct one, and should contain the right size
+	for the surface to maximize.
+
+	Setting one state won't unset another state. Use
+	xdg_surface.unset_maximized for unsetting it.
+      </description>
+    </request>
+
+    <request name="unset_maximized">
+      <description summary="unset the surface state as maximized">
+	Unset the surface maximized state.
+
+	Same negotiation as set_maximized must be used.
+      </description>
+    </request>
+
+    <request name="set_minimized">
+      <description summary="set the surface state as minimized">
+	Set the surface minimized state.
+
+	Setting one state won't unset another state.
+      </description>
+    </request>
+
+    <event name="activated">
+      <description summary="surface was activated">
+	The activated_set event is sent when this surface has been
+	activated, which means that the surface has user attention.
+        Window decorations should be updated accordingly. You should
+        not use this event for anything but the style of decorations
+        you display, use wl_keyboard.enter and wl_keyboard.leave for
+        determining keyboard focus.
+      </description>
+    </event>
+
+    <event name="deactivated">
+      <description summary="surface was deactivated">
+	The deactivate event is sent when this surface has been
+        deactivated, which means that the surface lost user attention.
+        Window decorations should be updated accordingly. You should
+        not use this event for anything but the style of decorations
+        you display, use wl_keyboard.enter and wl_keyboard.leave for
+        determining keyboard focus.
+      </description>
+    </event>
+
+    <event name="delete">
+      <description summary="surface wants to be closed">
+        The delete event is sent by the compositor when the user
+        wants the surface to be closed. This should be equivalent to
+        the user clicking the close button in client-side decorations,
+        if your application has any...
+
+        This is only a request that the user intends to close your
+        window. The client may choose to ignore this request, or show
+        a dialog to ask the user to save their data...
+      </description>
+    </event>
+  </interface>
+
+  <interface name="xdg_popup" version="1">
+    <description summary="desktop-style metadata interface">
+      An interface that may be implemented by a wl_surface, for
+      implementations that provide a desktop-style popups/menus. A popup
+      surface is a transient surface with an added pointer grab.
+
+      An existing implicit grab will be changed to owner-events mode,
+      and the popup grab will continue after the implicit grab ends
+      (i.e. releasing the mouse button does not cause the popup to be
+      unmapped).
+
+      The popup grab continues until the window is destroyed or a mouse
+      button is pressed in any other clients window. A click in any of
+      the clients surfaces is reported as normal, however, clicks in
+      other clients surfaces will be discarded and trigger the callback.
+
+      The x and y arguments specify the locations of the upper left
+      corner of the surface relative to the upper left corner of the
+      parent surface, in surface local coordinates.
+
+      xdg_popup surfaces are always transient for another surface.
+    </description>
+
+    <request name="destroy" type="destructor">
+      <description summary="remove xdg_surface interface">
+	The xdg_surface interface is removed from the wl_surface object
+	that was turned into a xdg_surface with
+	xdg_shell.get_xdg_surface request. The xdg_surface properties,
+	like maximized and fullscreen, are lost. The wl_surface loses
+	its role as a xdg_surface. The wl_surface is unmapped.
+      </description>
+    </request>
+
+    <event name="popup_done">
+      <description summary="popup interaction is done">
+	The popup_done event is sent out when a popup grab is broken,
+	that is, when the users clicks a surface that doesn't belong
+	to the client owning the popup surface.
+      </description>
+      <arg name="serial" type="uint" summary="serial of the implicit grab on the pointer"/>
+    </event>
+
+  </interface>
+</protocol>
--- a/src/50-mutter-navigation.xml.in
+++ b/src/50-mutter-navigation.xml.in
@@ -29,6 +29,18 @@
 	<KeyListEntry name="move-to-workspace-down"
 	              _description="Move window one workspace down" />

+	<KeyListEntry name="move-to-monitor-left"
+	              _description="Move window one monitor to the left" />
+
+	<KeyListEntry name="move-to-monitor-right"
+	              _description="Move window one monitor to the right" />
+
+	<KeyListEntry name="move-to-monitor-up"
+	              _description="Move window one monitor up" />
+
+	<KeyListEntry name="move-to-monitor-down"
+	              _description="Move window one monitor down" />
+
 	<KeyListEntry name="switch-applications"
 	              _description="Switch applications"/>

--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -6,6 +6,7 @@ lib_LTLIBRARIES = libmutter-wayland.la
 SUBDIRS=compositor/plugins

 INCLUDES=								\
+	-DCLUTTER_ENABLE_COMPOSITOR_API					\
 	-DCLUTTER_ENABLE_EXPERIMENTAL_API				\
 	-DCOGL_ENABLE_EXPERIMENTAL_API					\
 	-DCOGL_ENABLE_EXPERIMENTAL_2_0_API                              \
@@ -42,10 +43,10 @@ mutter_built_sources = \
 	mutter-enum-types.c			\
 	wayland/gtk-shell-protocol.c		\
 	wayland/gtk-shell-server-protocol.h	\
-	wayland/gtk-shell-client-protocol.h	\
+	wayland/xdg-shell-protocol.c		\
+	wayland/xdg-shell-server-protocol.h	\
 	wayland/xserver-protocol.c		\
-	wayland/xserver-server-protocol.h	\
-	wayland/xserver-client-protocol.h
+	wayland/xserver-server-protocol.h

 libmutter_wayland_la_SOURCES =			\
 	core/async-getprop.c			\
@@ -67,7 +68,8 @@ libmutter_wayland_la_SOURCES =			\
 	compositor/meta-background-actor.c	\
 	compositor/meta-background-actor-private.h	\
 	compositor/meta-background-group.c	\
-	compositor/meta-background-group-private.h	\
+	compositor/meta-cullable.c		\
+	compositor/meta-cullable.h		\
 	compositor/meta-module.c		\
 	compositor/meta-module.h		\
 	compositor/meta-plugin.c		\
@@ -77,6 +79,12 @@ libmutter_wayland_la_SOURCES =			\
 	compositor/meta-shadow-factory-private.h	\
 	compositor/meta-shaped-texture.c	\
 	compositor/meta-shaped-texture-private.h 	\
+	compositor/meta-surface-actor.c		\
+	compositor/meta-surface-actor.h		\
+	compositor/meta-surface-actor-x11.c	\
+	compositor/meta-surface-actor-x11.h	\
+	compositor/meta-surface-actor-wayland.c	\
+	compositor/meta-surface-actor-wayland.h	\
 	compositor/meta-texture-rectangle.c	\
 	compositor/meta-texture-rectangle.h	\
 	compositor/meta-texture-tower.c		\
@@ -105,8 +113,6 @@ libmutter_wayland_la_SOURCES =			\
 	core/display.c				\
 	core/display-private.h			\
 	meta/display.h				\
-	ui/draw-workspace.c			\
-	ui/draw-workspace.h			\
 	core/edge-resistance.c			\
 	core/edge-resistance.h			\
 	core/edid-parse.c			\
@@ -157,6 +163,8 @@ libmutter_wayland_la_SOURCES =			\
 	core/util-private.h			\
 	core/window-props.c			\
 	core/window-props.h			\
+	core/window-x11.c			\
+	core/window-x11.h			\
 	core/window.c				\
 	core/window-private.h			\
 	meta/window.h				\
@@ -175,19 +183,13 @@ libmutter_wayland_la_SOURCES =			\
 	ui/metaaccellabel.h			\
 	ui/resizepopup.c			\
 	ui/resizepopup.h			\
-	ui/tabpopup.c				\
-	ui/tabpopup.h				\
-	ui/tile-preview.c			\
-	ui/tile-preview.h			\
 	ui/theme-parser.c			\
 	ui/theme.c				\
 	meta/theme.h				\
 	ui/theme-private.h			\
 	ui/ui.c					\
-	$(mutter_built_sources)
-
-libmutter_wayland_la_SOURCES +=			\
 	wayland/meta-wayland.c			\
+	wayland/meta-wayland.h			\
 	wayland/meta-wayland-private.h		\
 	wayland/meta-xwayland-private.h		\
 	wayland/meta-xwayland.c			\
@@ -208,6 +210,9 @@ libmutter_wayland_la_SOURCES +=			\
 	wayland/meta-weston-launch.c		\
 	wayland/meta-weston-launch.h

+nodist_libmutter_wayland_la_SOURCES =		\
+	$(mutter_built_sources)
+
 libmutter_wayland_la_LDFLAGS = -no-undefined
 libmutter_wayland_la_LIBADD  = $(MUTTER_LIBS)

@@ -297,7 +302,7 @@ Meta-$(api_version).gir: libmutter-wayland.la
@META_GIR@_FILES =				\
 	mutter-enum-types.h			\
 	$(libmutterinclude_base_headers)	\
-	$(filter %.c,$(libmutter_wayland_la_SOURCES))
+	$(filter %.c,$(libmutter_wayland_la_SOURCES) $(nodist_libmutter_wayland_la_SOURCES))
@META_GIR@_SCANNERFLAGS = --warn-all --warn-error

 endif
@@ -395,7 +400,6 @@ $(dbus_xrandr_built_sources) : Makefile.am xrandr.xml
 		--generate-c-code meta-dbus-xrandr					\
 		$(srcdir)/xrandr.xml

-dbus_idle_built_sources = meta-dbus-idle-monitor.c meta-dbus-idle-monitor.h

 $(dbus_idle_built_sources) : Makefile.am idle-monitor.xml
 	$(AM_V_GEN)gdbus-codegen							\
@@ -411,6 +415,3 @@ wayland/%-protocol.c : $(top_builddir)/protocol/%.xml
 wayland/%-server-protocol.h : $(top_builddir)/protocol/%.xml
 	mkdir -p wayland
 	$(AM_V_GEN)$(WAYLAND_SCANNER) server-header < $< > $@
-wayland/%-client-protocol.h : $(top_builddir)/protocol/%.xml
-	mkdir -p wayland
-	$(AM_V_GEN)$(WAYLAND_SCANNER) client-header < $< > $@
--- a/src/compositor/clutter-utils.c
+++ b/src/compositor/clutter-utils.c
@@ -16,9 +16,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #include "clutter-utils.h"
@@ -95,8 +93,10 @@ meta_actor_vertices_are_untransformed (ClutterVertex *verts,
      v3x != v1x || v3y != v2y)
    return FALSE;

-  *x_origin = x;
-  *y_origin = y;
+  if (x_origin)
+    *x_origin = x;
+  if (y_origin)
+    *y_origin = y;

  return TRUE;
 }
--- a/src/compositor/clutter-utils.h
+++ b/src/compositor/clutter-utils.h
@@ -15,9 +15,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef __META_CLUTTER_UTILS_H__
--- a/src/compositor/cogl-utils.c
+++ b/src/compositor/cogl-utils.c
@@ -16,9 +16,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #include <clutter/clutter.h>
--- a/src/compositor/cogl-utils.h
+++ b/src/compositor/cogl-utils.h
@@ -15,9 +15,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef __META_COGL_UTILS_H__
--- a/src/compositor/compositor-private.h
+++ b/src/compositor/compositor-private.h
@@ -17,8 +17,6 @@ struct _MetaCompositor
 {
  MetaDisplay    *display;

-  Atom            atom_x_root_pixmap;
-  Atom            atom_net_wm_window_opacity;
  guint           repaint_func_id;

  ClutterActor   *shadow_src;
@@ -48,11 +46,8 @@ struct _MetaCompScreen
  CoglFrameClosure      *frame_closure;

  /* Used for unredirecting fullscreen windows */
-  guint                   disable_unredirect_count;
-  MetaWindowActor             *unredirected_window;
-
-  /* Before we create the output window */
-  XserverRegion     pending_input_region;
+  guint                  disable_unredirect_count;
+  MetaWindow            *unredirected_window;

  gint                   switch_workspace_in_progress;

--- a/src/compositor/compositor.c
+++ b/src/compositor/compositor.c
@@ -42,15 +42,6 @@
 * the call, so it may be necessary to readjust the display based on the
 * old_rect to start the animation.
 *
- * meta_compositor_window_mapped() and meta_compositor_window_unmapped() are
- * notifications when the toplevel window (frame or client window) is mapped or
- * unmapped. That is, when the result of meta_window_toplevel_is_mapped()
- * changes. The main use of this is to drop resources when a window is unmapped.
- * A window will always be mapped before meta_compositor_show_window()
- * is called and will not be unmapped until after meta_compositor_hide_window()
- * is called. If the live_hidden_windows preference is set, windows will never
- * be unmapped.
- *
 * # Containers #
 *
 * There's two containers in the stage that are used to place window actors, here
@@ -85,6 +76,7 @@
 #include "window-private.h" /* to check window->hidden */
 #include "display-private.h" /* for meta_display_lookup_x_window() */
 #include "util-private.h"
+#include "frame.h"
 #include "meta-wayland-private.h"
 #include "meta-wayland-pointer.h"
 #include "meta-wayland-keyboard.h"
@@ -179,31 +171,6 @@ process_damage (MetaCompositor     *compositor,
  meta_window_actor_process_x11_damage (window_actor, event);
 }

-static void
-process_property_notify (MetaCompositor	*compositor,
-                         XPropertyEvent *event,
-                         MetaWindow     *window)
-{
-  MetaWindowActor *window_actor;
-
-  if (window == NULL)
-    return;
-
-  window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (window));
-  if (window_actor == NULL)
-    return;
-
-  /* Check for the opacity changing */
-  if (event->atom == compositor->atom_net_wm_window_opacity)
-    {
-      meta_window_actor_update_opacity (window_actor);
-      DEBUG_TRACE ("process_property_notify: net_wm_window_opacity\n");
-      return;
-    }
-
-  DEBUG_TRACE ("process_property_notify: unknown\n");
-}
-
 static Window
 get_output_window (MetaScreen *screen)
 {
@@ -308,25 +275,6 @@ meta_get_window_actors (MetaScreen *screen)
  return info->windows;
 }

-static void
-do_set_stage_input_region (MetaScreen   *screen,
-                           XserverRegion region)
-{
-  MetaCompScreen *info = meta_screen_get_compositor_data (screen);
-  MetaDisplay *display = meta_screen_get_display (screen);
-  Display        *xdpy = meta_display_get_xdisplay (display);
-  Window        xstage = clutter_x11_get_stage_window (CLUTTER_STAGE (info->stage));
-
-  XFixesSetWindowShapeRegion (xdpy, xstage, ShapeInput, 0, 0, region);
-
-  /* It's generally a good heuristic that when a crossing event is generated because
-   * we reshape the overlay, we don't want it to affect focus-follows-mouse focus -
-   * it's not the user doing something, it's the environment changing under the user.
-   */
-  meta_display_add_ignored_crossing_serial (display, XNextRequest (xdpy));
-  XFixesSetWindowShapeRegion (xdpy, info->output, ShapeInput, 0, 0, region);
-}
-
 void
 meta_set_stage_input_region (MetaScreen   *screen,
                             XserverRegion region)
@@ -338,29 +286,19 @@ meta_set_stage_input_region (MetaScreen   *screen,
   */
  if (!meta_is_wayland_compositor ())
    {
-      MetaCompScreen *info = meta_screen_get_compositor_data (screen);
-      MetaDisplay  *display = meta_screen_get_display (screen);
-      Display      *xdpy    = meta_display_get_xdisplay (display);
+      MetaCompScreen *info    = meta_screen_get_compositor_data (screen);
+      MetaDisplay    *display = meta_screen_get_display (screen);
+      Display        *xdpy    = meta_display_get_xdisplay (display);
+      Window          xstage  = clutter_x11_get_stage_window (CLUTTER_STAGE (info->stage));

-      if (info->stage && info->output)
-        {
-          do_set_stage_input_region (screen, region);
-        }
-      else 
-        {
-          /* Reset info->pending_input_region if one existed before and set the new
-           * one to use it later. */ 
-          if (info->pending_input_region)
-            {
-              XFixesDestroyRegion (xdpy, info->pending_input_region);
-              info->pending_input_region = None;
-            }
-          if (region != None)
-            {
-              info->pending_input_region = XFixesCreateRegion (xdpy, NULL, 0);
-              XFixesCopyRegion (xdpy, info->pending_input_region, region);
-            }
-        } 
+      XFixesSetWindowShapeRegion (xdpy, xstage, ShapeInput, 0, 0, region);
+
+      /* It's generally a good heuristic that when a crossing event is generated because
+       * we reshape the overlay, we don't want it to affect focus-follows-mouse focus -
+       * it's not the user doing something, it's the environment changing under the user.
+       */
+      meta_display_add_ignored_crossing_serial (display, XNextRequest (xdpy));
+      XFixesSetWindowShapeRegion (xdpy, info->output, ShapeInput, 0, 0, region);
    }
 }

@@ -392,39 +330,36 @@ meta_focus_stage_window (MetaScreen *screen,
  if (!stage)
    return;

-  if (!meta_is_wayland_compositor ())
-    {
-      window = clutter_x11_get_stage_window (stage);
+  window = clutter_x11_get_stage_window (stage);

-      if (window == None)
-        return;
+  if (window == None)
+    return;

-      meta_display_set_input_focus_xwindow (screen->display,
-                                            screen,
-                                            META_FOCUS_STAGE,
-                                            window,
-                                            timestamp);
-    }
-  else
-    {
-      meta_display_set_input_focus_xwindow (screen->display,
-                                            screen,
-                                            META_FOCUS_STAGE,
-                                            None,
-                                            timestamp);
-    }
+  meta_display_set_input_focus_xwindow (screen->display,
+                                        screen,
+                                        window,
+                                        timestamp);
 }

 gboolean
 meta_stage_is_focused (MetaScreen *screen)
 {
  ClutterStage *stage;
+  Window window;
+
+  if (meta_is_wayland_compositor ())
+    return TRUE;

  stage = CLUTTER_STAGE (meta_get_stage_for_screen (screen));
  if (!stage)
    return FALSE;

-  return (screen->display->focus_type == META_FOCUS_STAGE);
+  window = clutter_x11_get_stage_window (stage);
+
+  if (window == None)
+    return FALSE;
+
+  return (screen->display->focus_xwindow == window);
 }

 static gboolean
@@ -637,6 +572,9 @@ after_stage_paint (ClutterStage *stage,

  for (l = info->windows; l; l = l->next)
    meta_window_actor_post_paint (l->data);
+
+  if (meta_is_wayland_compositor ())
+    meta_wayland_compositor_paint_finished (meta_wayland_compositor_get_default ());
 }

 static void
@@ -650,11 +588,6 @@ redirect_windows (MetaCompositor *compositor,
  guint        n_retries;
  guint        max_retries;

-  /* If we're running with wayland, connected to a headless xwayland
-   * server then all the windows are implicitly redirected offscreen
-   * already and it would generate an error to try and explicitly
-   * redirect them via XCompositeRedirectSubwindows() */
-
  if (meta_get_replace_current_wm ())
    max_retries = 5;
  else
@@ -704,21 +637,6 @@ meta_compositor_manage_screen (MetaCompositor *compositor,
    return;

  info = g_new0 (MetaCompScreen, 1);
-  /*
-   * We use an empty input region for Clutter as a default because that allows
-   * the user to interact with all the windows displayed on the screen.
-   * We have to initialize info->pending_input_region to an empty region explicitly, 
-   * because None value is used to mean that the whole screen is an input region.
-   */
-  if (!meta_is_wayland_compositor ())
-    info->pending_input_region = XFixesCreateRegion (xdisplay, NULL, 0);
-  else
-    {
-      /* Stage input region trickery isn't needed when we're running as a
-       * wayland compositor. */
-      info->pending_input_region = None;
-    }
-
  info->screen = screen;

  meta_screen_set_compositor_data (screen, info);
@@ -792,8 +710,6 @@ meta_compositor_manage_screen (MetaCompositor *compositor,
  clutter_actor_add_child (info->stage, info->window_group);
  clutter_actor_add_child (info->stage, info->top_window_group);

-  info->plugin_mgr = meta_plugin_manager_new (screen);
-
  if (meta_is_wayland_compositor ())
    {
      /* NB: When running as a wayland compositor we don't need an X
@@ -803,16 +719,11 @@ meta_compositor_manage_screen (MetaCompositor *compositor,
    }
  else
    {
-      /*
-       * Delay the creation of the overlay window as long as we can, to avoid
-       * blanking out the screen. This means that during the plugin loading, the
-       * overlay window is not accessible; if the plugin needs to access it
-       * directly, it should hook into the "show" signal on stage, and do
-       * its stuff there.
-       */
      info->output = get_output_window (screen);
      XReparentWindow (xdisplay, xwin, info->output, 0, 0);

+      meta_empty_stage_input_region (screen);
+
      /* Make sure there isn't any left-over output shape on the 
       * overlay window by setting the whole screen to be an
       * output region.
@@ -823,20 +734,15 @@ meta_compositor_manage_screen (MetaCompositor *compositor,
       */
      XFixesSetWindowShapeRegion (xdisplay, info->output, ShapeBounding, 0, 0, None);

-      do_set_stage_input_region (screen, info->pending_input_region);
-      if (info->pending_input_region != None)
-        {
-          XFixesDestroyRegion (xdisplay, info->pending_input_region);
-          info->pending_input_region = None;
-        }
-
      /* Map overlay window before redirecting windows offscreen so we catch their
       * contents until we show the stage.
       */
      XMapWindow (xdisplay, info->output);
-
-      redirect_windows (compositor, screen);
    }
+
+  redirect_windows (compositor, screen);
+
+  info->plugin_mgr = meta_plugin_manager_new (screen);
 }

 void
@@ -876,7 +782,7 @@ meta_shape_cow_for_window (MetaScreen *screen,
      int width, height;
      MetaRectangle rect;

-      meta_window_get_outer_rect (metaWindow, &rect);
+      meta_window_get_frame_rect (metaWindow, &rect);

      window_bounds.x = rect.x;
      window_bounds.y = rect.y;
@@ -897,6 +803,30 @@ meta_shape_cow_for_window (MetaScreen *screen,
    }
 }

+static void
+set_unredirected_window (MetaCompScreen *info,
+                         MetaWindow     *window)
+{
+  if (info->unredirected_window == window)
+    return;
+
+  if (info->unredirected_window != NULL)
+    {
+      MetaWindowActor *window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (info->unredirected_window));
+      meta_window_actor_set_unredirected (window_actor, FALSE);
+    }
+
+  info->unredirected_window = window;
+
+  if (info->unredirected_window != NULL)
+    {
+      MetaWindowActor *window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (info->unredirected_window));
+      meta_window_actor_set_unredirected (window_actor, TRUE);
+    }
+
+  meta_shape_cow_for_window (info->screen, info->unredirected_window);
+}
+
 void
 meta_compositor_add_window (MetaCompositor    *compositor,
                            MetaWindow        *window)
@@ -925,19 +855,11 @@ meta_compositor_remove_window (MetaCompositor *compositor,
  if (!window_actor)
    return;

-  if (!meta_is_wayland_compositor ())
-    {
-      screen = meta_window_get_screen (window);
-      info = meta_screen_get_compositor_data (screen);
+  screen = meta_window_get_screen (window);
+  info = meta_screen_get_compositor_data (screen);

-      if (window_actor == info->unredirected_window)
-        {
-          meta_window_actor_set_redirected (window_actor, TRUE);
-          meta_shape_cow_for_window (meta_window_get_screen (meta_window_actor_get_meta_window (info->unredirected_window)),
-                                     NULL);
-          info->unredirected_window = NULL;
-        }
-    }
+  if (info->unredirected_window == window)
+    set_unredirected_window (info, NULL);

  meta_window_actor_destroy (window_actor);
 }
@@ -1007,23 +929,91 @@ meta_compositor_window_shape_changed (MetaCompositor *compositor,
  meta_window_actor_update_shape (window_actor);
 }

+void
+meta_compositor_window_opacity_changed (MetaCompositor *compositor,
+                                        MetaWindow     *window)
+{
+  MetaWindowActor *window_actor;
+  window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (window));
+  if (!window_actor)
+    return;
+
+  meta_window_actor_update_opacity (window_actor);
+}
+
+void
+meta_compositor_window_surface_changed (MetaCompositor *compositor,
+                                        MetaWindow     *window)
+{
+  MetaWindowActor *window_actor;
+  window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (window));
+  if (!window_actor)
+    return;
+
+  meta_window_actor_update_surface (window_actor);
+}
+
+static gboolean
+grab_op_is_clicking (MetaGrabOp grab_op)
+{
+  switch (grab_op)
+    {
+    case META_GRAB_OP_CLICKING_MINIMIZE:
+    case META_GRAB_OP_CLICKING_MAXIMIZE:
+    case META_GRAB_OP_CLICKING_UNMAXIMIZE:
+    case META_GRAB_OP_CLICKING_DELETE:
+    case META_GRAB_OP_CLICKING_MENU:
+    case META_GRAB_OP_CLICKING_SHADE:
+    case META_GRAB_OP_CLICKING_UNSHADE:
+    case META_GRAB_OP_CLICKING_ABOVE:
+    case META_GRAB_OP_CLICKING_UNABOVE:
+    case META_GRAB_OP_CLICKING_STICK:
+    case META_GRAB_OP_CLICKING_UNSTICK:
+      return TRUE;
+
+    default:
+      return FALSE;
+    }
+}
+
+static gboolean
+event_is_passive_button_grab (MetaDisplay   *display,
+                              XIDeviceEvent *device_event)
+{
+  /* see display.c for which events are passive button
+     grabs (meta_display_grab_window_buttons() and
+     meta_display_handle_events())
+     we need to filter them here because normally they
+     would be sent to gtk+ (they are on gtk+ frame xwindow),
+     but we want to redirect them to clutter
+  */
+
+  if (device_event->evtype != XI_ButtonPress)
+    return FALSE;
+
+  if (display->window_grab_modifiers == 0)
+    return FALSE;
+
+  if ((device_event->mods.effective & display->window_grab_modifiers) !=
+      display->window_grab_modifiers)
+    return FALSE;
+
+  return device_event->detail < 4;
+}
+
 /* Clutter makes the assumption that there is only one X window
 * per stage, which is a valid assumption to make for a generic
 * application toolkit. As such, it will ignore any events sent
 * to the a stage that isn't its X window.
 *
- * When a user clicks on what she thinks is the wallpaper, she
- * is actually clicking on the guard window, which is an entirely
- * separate top-level override-redirect window in the hierarchy.
- * We want to recieve events on this guard window so that users
- * can right-click on the background actor. We do this by telling
- * Clutter a little white lie, by transforming clicks on the guard
- * window to become clicks on the stage window, allowing Clutter
- * to process the event normally.
+ * When running as an X window manager, we need to respond to
+ * events from lots of windows. Trick Clutter into translating
+ * these events by pretending we got an event on the stage window.
 */
 static void
-maybe_spoof_guard_window_event_as_stage_event (MetaCompScreen *info,
-                                               XEvent         *event)
+maybe_spoof_event_as_stage_event (MetaCompScreen *info,
+                                  MetaWindow     *window,
+                                  XEvent         *event)
 {
  MetaDisplay *display = meta_screen_get_display (info->screen);

@@ -1031,21 +1021,30 @@ maybe_spoof_guard_window_event_as_stage_event (MetaCompScreen *info,
      event->xcookie.extension == display->xinput_opcode)
    {
      XIEvent *input_event = (XIEvent *) event->xcookie.data;
+      XIDeviceEvent *device_event = ((XIDeviceEvent *) input_event);

-      /* Only care about pointer events for now. */
      switch (input_event->evtype)
        {
        case XI_Motion:
        case XI_ButtonPress:
        case XI_ButtonRelease:
-          {
-            XIDeviceEvent *device_event = ((XIDeviceEvent *) input_event);
-            if (device_event->event == info->screen->guard_window)
-              {
-                Window xwin = clutter_x11_get_stage_window (CLUTTER_STAGE (info->stage));
-                device_event->event = xwin;
-              }
-          }
+          /* If this is a window frame, and we think GTK+ needs to handle the event,
+             let GTK+ handle it without mangling */
+          if (window && window->frame && device_event->event == window->frame->xwindow &&
+              (grab_op_is_clicking (display->grab_op) ||
+               (display->grab_op == META_GRAB_OP_NONE && !event_is_passive_button_grab (display, device_event))))
+            break;
+
+        case XI_KeyPress:
+        case XI_KeyRelease:
+            /* If this is a GTK+ widget, like a window menu, let GTK+ handle
+             * it as-is without mangling. */
+            if (meta_ui_window_is_widget (info->screen->ui, device_event->event))
+              break;
+
+            device_event->event = clutter_x11_get_stage_window (CLUTTER_STAGE (info->stage));
+            device_event->event_x = device_event->root_x;
+            device_event->event_y = device_event->root_y;
          break;
        default:
          break;
@@ -1065,6 +1064,12 @@ meta_compositor_process_event (MetaCompositor *compositor,
                               XEvent         *event,
                               MetaWindow     *window)
 {
+  MetaDisplay *display = compositor->display;
+  MetaScreen *screen = display->screens->data;
+  MetaCompScreen *info;
+
+  info = meta_screen_get_compositor_data (screen);
+
  if (compositor->modal_plugin && is_grabbed_event (compositor->display, event))
    {
      _meta_plugin_xevent_filter (compositor->modal_plugin, event);
@@ -1074,68 +1079,29 @@ meta_compositor_process_event (MetaCompositor *compositor,
      return TRUE;
    }

-  if (window)
+  if (!meta_is_wayland_compositor ())
+    maybe_spoof_event_as_stage_event (info, window, event);
+
+  if (meta_plugin_manager_xevent_filter (info->plugin_mgr, event))
    {
-      MetaCompScreen *info;
-      MetaScreen     *screen;
-
-      screen = meta_window_get_screen (window);
-      info = meta_screen_get_compositor_data (screen);
-
-      if (meta_plugin_manager_xevent_filter (info->plugin_mgr, event))
-	{
-	  DEBUG_TRACE ("meta_compositor_process_event (filtered,window==NULL)\n");
-	  return TRUE;
-	}
-    }
-  else
-    {
-      GSList *l;
-
-      l = meta_display_get_screens (compositor->display);
-
-      while (l)
-	{
-	  MetaScreen     *screen = l->data;
-	  MetaCompScreen *info;
-
-	  info = meta_screen_get_compositor_data (screen);
-
-          maybe_spoof_guard_window_event_as_stage_event (info, event);
-
-	  if (meta_plugin_manager_xevent_filter (info->plugin_mgr, event))
-	    {
-	      DEBUG_TRACE ("meta_compositor_process_event (filtered,window==NULL)\n");
-	      return TRUE;
-	    }
-
-	  l = l->next;
-	}
+      DEBUG_TRACE ("meta_compositor_process_event (filtered,window==NULL)\n");
+      return TRUE;
    }

-  switch (event->type)
+  if (!meta_is_wayland_compositor () &&
+      event->type == meta_display_get_damage_event_base (compositor->display) + XDamageNotify)
    {
-    case PropertyNotify:
-      process_property_notify (compositor, (XPropertyEvent *) event, window);
-      break;
-
-    default:
-      if (!meta_is_wayland_compositor () &&
-          event->type == meta_display_get_damage_event_base (compositor->display) + XDamageNotify)
+      /* Core code doesn't handle damage events, so we need to extract the MetaWindow
+       * ourselves
+       */
+      if (window == NULL)
        {
-          /* Core code doesn't handle damage events, so we need to extract the MetaWindow
-           * ourselves
-           */
-          if (window == NULL)
-            {
-              Window xwin = ((XDamageNotifyEvent *) event)->drawable;
-              window = meta_display_lookup_x_window (compositor->display, xwin);
-            }
-
-	  DEBUG_TRACE ("meta_compositor_process_event (process_damage)\n");
-          process_damage (compositor, (XDamageNotifyEvent *) event, window);
+          Window xwin = ((XDamageNotifyEvent *) event)->drawable;
+          window = meta_display_lookup_x_window (compositor->display, xwin);
        }
-      break;
+
+      DEBUG_TRACE ("meta_compositor_process_event (process_damage)\n");
+      process_damage (compositor, (XDamageNotifyEvent *) event, window);
    }

  /* Clutter needs to know about MapNotify events otherwise it will
@@ -1435,30 +1401,6 @@ meta_compositor_sync_stack (MetaCompositor  *compositor,
  sync_actor_stacking (info);
 }

-void
-meta_compositor_window_mapped (MetaCompositor *compositor,
-                               MetaWindow     *window)
-{
-  MetaWindowActor *window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (window));
-  DEBUG_TRACE ("meta_compositor_window_mapped\n");
-  if (!window_actor)
-    return;
-
-  meta_window_actor_mapped (window_actor);
-}
-
-void
-meta_compositor_window_unmapped (MetaCompositor *compositor,
-                                 MetaWindow     *window)
-{
-  MetaWindowActor *window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (window));
-  DEBUG_TRACE ("meta_compositor_window_unmapped\n");
-  if (!window_actor)
-    return;
-
-  meta_window_actor_unmapped (window_actor);
-}
-
 void
 meta_compositor_sync_window_geometry (MetaCompositor *compositor,
 				      MetaWindow *window,
@@ -1566,7 +1508,6 @@ pre_paint_windows (MetaCompScreen *info)
 {
  GList *l;
  MetaWindowActor *top_window;
-  MetaWindowActor *expected_unredirected_window = NULL;

  if (info->onscreen == NULL)
    {
@@ -1580,33 +1521,13 @@ pre_paint_windows (MetaCompScreen *info)
  if (info->windows == NULL)
    return;

-  if (!meta_is_wayland_compositor ())
-    {
-      top_window = g_list_last (info->windows)->data;
+  top_window = g_list_last (info->windows)->data;

-      if (meta_window_actor_should_unredirect (top_window) &&
-          info->disable_unredirect_count == 0)
-        expected_unredirected_window = top_window;
-
-      if (info->unredirected_window != expected_unredirected_window)
-        {
-          if (info->unredirected_window != NULL)
-            {
-              meta_window_actor_set_redirected (info->unredirected_window, TRUE);
-              meta_shape_cow_for_window (meta_window_get_screen (meta_window_actor_get_meta_window (info->unredirected_window)),
-                                         NULL);
-            }
-
-          if (expected_unredirected_window != NULL)
-            {
-              meta_shape_cow_for_window (meta_window_get_screen (meta_window_actor_get_meta_window (top_window)),
-                                         meta_window_actor_get_meta_window (top_window));
-              meta_window_actor_set_redirected (top_window, FALSE);
-            }
-
-          info->unredirected_window = expected_unredirected_window;
-        }
-    }
+  if (meta_window_actor_should_unredirect (top_window) &&
+      info->disable_unredirect_count == 0)
+    set_unredirected_window (info, meta_window_actor_get_meta_window (top_window));
+  else
+    set_unredirected_window (info, NULL);

  for (l = info->windows; l; l = l->next)
    meta_window_actor_pre_paint (l->data);
@@ -1660,13 +1581,7 @@ on_shadow_factory_changed (MetaShadowFactory *factory,
 MetaCompositor *
 meta_compositor_new (MetaDisplay *display)
 {
-  char *atom_names[] = {
-    "_XROOTPMAP_ID",
-    "_NET_WM_WINDOW_OPACITY",
-  };
-  Atom                   atoms[G_N_ELEMENTS(atom_names)];
  MetaCompositor        *compositor;
-  Display               *xdisplay = meta_display_get_xdisplay (display);

  if (!composite_at_least_version (display, 0, 3))
    return NULL;
@@ -1678,18 +1593,11 @@ meta_compositor_new (MetaDisplay *display)
  if (g_getenv("META_DISABLE_MIPMAPS"))
    compositor->no_mipmaps = TRUE;

-  meta_verbose ("Creating %d atoms\n", (int) G_N_ELEMENTS (atom_names));
-  XInternAtoms (xdisplay, atom_names, G_N_ELEMENTS (atom_names),
-                False, atoms);
-
  g_signal_connect (meta_shadow_factory_get_default (),
                    "changed",
                    G_CALLBACK (on_shadow_factory_changed),
                    compositor);

-  compositor->atom_x_root_pixmap = atoms[0];
-  compositor->atom_net_wm_window_opacity = atoms[1];
-
  compositor->repaint_func_id = clutter_threads_add_repaint_func (meta_repaint_func,
                                                                  compositor,
                                                                  NULL);
@@ -1834,3 +1742,31 @@ meta_compositor_monotonic_time_to_server_time (MetaDisplay *display,
  else
    return monotonic_time + compositor->server_time_offset;
 }
+
+void
+meta_compositor_show_tile_preview (MetaCompositor *compositor,
+                                   MetaScreen     *screen,
+                                   MetaWindow     *window,
+                                   MetaRectangle  *tile_rect,
+                                   int             tile_monitor_number)
+{
+  MetaCompScreen *info = meta_screen_get_compositor_data (screen);
+
+  if (!info->plugin_mgr)
+    return;
+
+  meta_plugin_manager_show_tile_preview (info->plugin_mgr,
+                                         window, tile_rect, tile_monitor_number);
+}
+
+void
+meta_compositor_hide_tile_preview (MetaCompositor *compositor,
+                                   MetaScreen     *screen)
+{
+  MetaCompScreen *info = meta_screen_get_compositor_data (screen);
+
+  if (!info->plugin_mgr)
+    return;
+
+  meta_plugin_manager_hide_tile_preview (info->plugin_mgr);
+}
--- a/src/compositor/meta-background-actor-private.h
+++ b/src/compositor/meta-background-actor-private.h
@@ -6,9 +6,6 @@
 #include <meta/screen.h>
 #include <meta/meta-background-actor.h>

-void meta_background_actor_set_clip_region  (MetaBackgroundActor *self,
-                                             cairo_region_t      *clip_region);
-
 cairo_region_t *meta_background_actor_get_clip_region (MetaBackgroundActor *self);

 #endif /* META_BACKGROUND_ACTOR_PRIVATE_H */
--- a/src/compositor/meta-background-actor.c
+++ b/src/compositor/meta-background-actor.c
@@ -14,9 +14,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 *
 * Portions adapted from gnome-shell/src/shell-global.c
 */
@@ -41,20 +39,35 @@
 #include <meta/errors.h>
 #include <meta/meta-background.h>
 #include "meta-background-actor-private.h"
+#include "meta-cullable.h"

 struct _MetaBackgroundActorPrivate
 {
  cairo_region_t *clip_region;
 };

-G_DEFINE_TYPE (MetaBackgroundActor, meta_background_actor, CLUTTER_TYPE_ACTOR);
+static void cullable_iface_init (MetaCullableInterface *iface);
+
+G_DEFINE_TYPE_WITH_CODE (MetaBackgroundActor, meta_background_actor, CLUTTER_TYPE_ACTOR,
+                         G_IMPLEMENT_INTERFACE (META_TYPE_CULLABLE, cullable_iface_init));
+
+static void
+set_clip_region (MetaBackgroundActor *self,
+                 cairo_region_t      *clip_region)
+{
+  MetaBackgroundActorPrivate *priv = self->priv;
+
+  g_clear_pointer (&priv->clip_region, (GDestroyNotify) cairo_region_destroy);
+  if (clip_region)
+    priv->clip_region = cairo_region_copy (clip_region);
+}

 static void
 meta_background_actor_dispose (GObject *object)
 {
  MetaBackgroundActor *self = META_BACKGROUND_ACTOR (object);

-  meta_background_actor_set_clip_region (self, NULL);
+  set_clip_region (self, NULL);

  G_OBJECT_CLASS (meta_background_actor_parent_class)->dispose (object);
 }
@@ -104,26 +117,6 @@ meta_background_actor_get_preferred_height (ClutterActor *actor,
    *natural_height_p = height;
 }

-static gboolean
-meta_background_actor_get_paint_volume (ClutterActor       *actor,
-                                        ClutterPaintVolume *volume)
-{
-  ClutterContent *content;
-  gfloat width, height;
-
-  content = clutter_actor_get_content (actor);
-
-  if (!content)
-    return FALSE;
-
-  clutter_content_get_preferred_size (content, &width, &height);
-
-  clutter_paint_volume_set_width (volume, width);
-  clutter_paint_volume_set_height (volume, height);
-
-  return TRUE;
-}
-
 static void
 meta_background_actor_class_init (MetaBackgroundActorClass *klass)
 {
@@ -136,7 +129,6 @@ meta_background_actor_class_init (MetaBackgroundActorClass *klass)

  actor_class->get_preferred_width = meta_background_actor_get_preferred_width;
  actor_class->get_preferred_height = meta_background_actor_get_preferred_height;
-  actor_class->get_paint_volume = meta_background_actor_get_paint_volume;
 }

 static void
@@ -166,31 +158,27 @@ meta_background_actor_new (void)
  return CLUTTER_ACTOR (self);
 }

-/**
- * meta_background_actor_set_clip_region:
- * @self: a #MetaBackgroundActor
- * @clip_region: (allow-none): the area of the actor (in allocate-relative
- *   coordinates) that is visible.
- *
- * Sets the area of the background that is unobscured by overlapping windows.
- * This is used to optimize and only paint the visible portions.
- */
-void
-meta_background_actor_set_clip_region (MetaBackgroundActor *self,
-                                       cairo_region_t      *clip_region)
+static void
+meta_background_actor_cull_out (MetaCullable   *cullable,
+                                cairo_region_t *unobscured_region,
+                                cairo_region_t *clip_region)
 {
-  MetaBackgroundActorPrivate *priv;
+  MetaBackgroundActor *self = META_BACKGROUND_ACTOR (cullable);
+  set_clip_region (self, clip_region);
+}

-  g_return_if_fail (META_IS_BACKGROUND_ACTOR (self));
+static void
+meta_background_actor_reset_culling (MetaCullable *cullable)
+{
+  MetaBackgroundActor *self = META_BACKGROUND_ACTOR (cullable);
+  set_clip_region (self, NULL);
+}

-  priv = self->priv;
-
-  g_clear_pointer (&priv->clip_region,
-                   (GDestroyNotify)
-                   cairo_region_destroy);
-
-  if (clip_region)
-    priv->clip_region = cairo_region_copy (clip_region);
+static void
+cullable_iface_init (MetaCullableInterface *iface)
+{
+  iface->cull_out = meta_background_actor_cull_out;
+  iface->reset_culling = meta_background_actor_reset_culling;
 }

 /**
--- a/src/compositor/meta-background-group-private.h
+++ b/src/compositor/meta-background-group-private.h
@@ -1,11 +0,0 @@
-/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
-
-#ifndef META_BACKGROUND_GROUP_PRIVATE_H
-#define META_BACKGROUND_GROUP_PRIVATE_H
-
-#include <meta/screen.h>
-#include <meta/meta-background-group.h>
-
-void meta_background_group_set_clip_region  (MetaBackgroundGroup *self,
-                                             cairo_region_t      *visible_region);
-#endif /* META_BACKGROUND_GROUP_PRIVATE_H */
--- a/src/compositor/meta-background-group.c
+++ b/src/compositor/meta-background-group.c
@@ -16,87 +16,43 @@

 #include <config.h>

-#include "compositor-private.h"
-#include "clutter-utils.h"
-#include "meta-background-actor-private.h"
-#include "meta-background-group-private.h"
+#include <meta/meta-background-group.h>
+#include "meta-cullable.h"

-G_DEFINE_TYPE (MetaBackgroundGroup, meta_background_group, CLUTTER_TYPE_ACTOR);
+static void cullable_iface_init (MetaCullableInterface *iface);

-struct _MetaBackgroundGroupPrivate
-{
-  gpointer dummy;
-};
-
-static void
-meta_background_group_dispose (GObject *object)
-{
-  G_OBJECT_CLASS (meta_background_group_parent_class)->dispose (object);
-}
-
-static gboolean
-meta_background_group_get_paint_volume (ClutterActor       *actor,
-                                        ClutterPaintVolume *volume)
-{
-  return clutter_paint_volume_set_from_allocation (volume, actor);
-}
+G_DEFINE_TYPE_WITH_CODE (MetaBackgroundGroup, meta_background_group, CLUTTER_TYPE_ACTOR,
+                         G_IMPLEMENT_INTERFACE (META_TYPE_CULLABLE, cullable_iface_init));

 static void
 meta_background_group_class_init (MetaBackgroundGroupClass *klass)
 {
-  GObjectClass *object_class = G_OBJECT_CLASS (klass);
-  ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
+}

-  actor_class->get_paint_volume = meta_background_group_get_paint_volume;
-  object_class->dispose = meta_background_group_dispose;
+static void
+meta_background_group_cull_out (MetaCullable   *cullable,
+                                cairo_region_t *unobscured_region,
+                                cairo_region_t *clip_region)
+{
+  meta_cullable_cull_out_children (cullable, unobscured_region, clip_region);
+}

-  g_type_class_add_private (klass, sizeof (MetaBackgroundGroupPrivate));
+static void
+meta_background_group_reset_culling (MetaCullable *cullable)
+{
+  meta_cullable_reset_culling_children (cullable);
+}
+
+static void
+cullable_iface_init (MetaCullableInterface *iface)
+{
+  iface->cull_out = meta_background_group_cull_out;
+  iface->reset_culling = meta_background_group_reset_culling;
 }

 static void
 meta_background_group_init (MetaBackgroundGroup *self)
 {
-  self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
-                                            META_TYPE_BACKGROUND_GROUP,
-                                            MetaBackgroundGroupPrivate);
-}
-
-/**
- * meta_background_group_set_clip_region:
- * @self: a #MetaBackgroundGroup
- * @region: (allow-none): the parts of the background to paint
- *
- * Sets the area of the backgrounds that is unobscured by overlapping windows.
- * This is used to optimize and only paint the visible portions.
- */
-void
-meta_background_group_set_clip_region (MetaBackgroundGroup *self,
-                                       cairo_region_t      *region)
-{
-  GList *children, *l;
-
-  children = clutter_actor_get_children (CLUTTER_ACTOR (self));
-  for (l = children; l; l = l->next)
-    {
-      ClutterActor *actor = l->data;
-
-      if (META_IS_BACKGROUND_ACTOR (actor))
-        {
-          meta_background_actor_set_clip_region (META_BACKGROUND_ACTOR (actor), region);
-        }
-      else if (META_IS_BACKGROUND_GROUP (actor))
-        {
-          int x, y;
-
-          if (!meta_actor_is_untransformed (actor, &x, &y))
-            continue;
-
-          cairo_region_translate (region, -x, -y);
-          meta_background_group_set_clip_region (META_BACKGROUND_GROUP (actor), region);
-          cairo_region_translate (region, x, y);
-        }
-    }
-  g_list_free (children);
 }

 ClutterActor *
--- a/src/compositor/meta-background.c
+++ b/src/compositor/meta-background.c
@@ -14,9 +14,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 /**
--- a/src/compositor/meta-cullable.c
+++ b/src/compositor/meta-cullable.c
@@ -0,0 +1,201 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+/*
+ * Copyright (C) 2013 Red Hat
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Written by:
+ *     Owen Taylor <otaylor@redhat.com>
+ *     Ray Strode <rstrode@redhat.com>
+ *     Jasper St. Pierre <jstpierre@mecheye.net>
+ */
+
+#include "config.h"
+#include "meta-cullable.h"
+#include "clutter-utils.h"
+
+G_DEFINE_INTERFACE (MetaCullable, meta_cullable, CLUTTER_TYPE_ACTOR);
+
+/**
+ * SECTION:meta-cullable
+ * @title: MetaCullable
+ * @short_description: CPU culling operations for efficient drawing
+ *
+ * When we are painting a stack of 5-10 large actors, the standard
+ * bottom-to-top method of drawing every actor results in a tremendous
+ * amount of overdraw. If these actors are painting textures like
+ * windows, it can easily max out the available memory bandwidth on a
+ * low-end graphics chipset. It's even worse if window textures are
+ * being accessed over the AGP bus.
+ *
+ * #MetaCullable is our solution. The basic technique applied here is to
+ * do a pre-pass before painting where we walk each actor from top to bottom
+ * and ask each actor to "cull itself out". We pass in a region it can copy
+ * to clip its drawing to, and the actor can subtract its fully opaque pixels
+ * so that actors underneath know not to draw there as well.
+ */
+
+/**
+ * meta_cullable_cull_out_children:
+ * @cullable: The #MetaCullable
+ * @unobscured_region: The unobscured region, as passed into cull_out()
+ * @clip_region: The clip region, as passed into cull_out()
+ *
+ * This is a helper method for actors that want to recurse over their
+ * child actors, and cull them out.
+ *
+ * See #MetaCullable and meta_cullable_cull_out() for more details.
+ */
+void
+meta_cullable_cull_out_children (MetaCullable   *cullable,
+                                 cairo_region_t *unobscured_region,
+                                 cairo_region_t *clip_region)
+{
+  ClutterActor *actor = CLUTTER_ACTOR (cullable);
+  ClutterActor *child;
+  ClutterActorIter iter;
+
+  clutter_actor_iter_init (&iter, actor);
+  while (clutter_actor_iter_prev (&iter, &child))
+    {
+      float x, y;
+      gboolean needs_culling;
+
+      if (!META_IS_CULLABLE (child))
+        continue;
+
+      needs_culling = (unobscured_region != NULL && clip_region != NULL);
+
+      if (needs_culling && !CLUTTER_ACTOR_IS_VISIBLE (child))
+        needs_culling = FALSE;
+
+      /* If an actor has effects applied, then that can change the area
+       * it paints and the opacity, so we no longer can figure out what
+       * portion of the actor is obscured and what portion of the screen
+       * it obscures, so we skip the actor.
+       *
+       * This has a secondary beneficial effect: if a ClutterOffscreenEffect
+       * is applied to an actor, then our clipped redraws interfere with the
+       * caching of the FBO - even if we only need to draw a small portion
+       * of the window right now, ClutterOffscreenEffect may use other portions
+       * of the FBO later. So, skipping actors with effects applied also
+       * prevents these bugs.
+       *
+       * Theoretically, we should check clutter_actor_get_offscreen_redirect()
+       * as well for the same reason, but omitted for simplicity in the
+       * hopes that no-one will do that.
+       */
+      if (needs_culling && clutter_actor_has_effects (child))
+        needs_culling = FALSE;
+
+      if (needs_culling && !meta_actor_is_untransformed (child, NULL, NULL))
+        needs_culling = FALSE;
+
+      if (needs_culling)
+        {
+          clutter_actor_get_position (child, &x, &y);
+
+          /* Temporarily move to the coordinate system of the actor */
+          cairo_region_translate (unobscured_region, - x, - y);
+          cairo_region_translate (clip_region, - x, - y);
+
+          meta_cullable_cull_out (META_CULLABLE (child), unobscured_region, clip_region);
+
+          cairo_region_translate (unobscured_region, x, y);
+          cairo_region_translate (clip_region, x, y);
+        }
+      else
+        {
+          meta_cullable_cull_out (META_CULLABLE (child), NULL, NULL);
+        }
+    }
+}
+
+/**
+ * meta_cullable_reset_culling_children:
+ * @cullable: The #MetaCullable
+ *
+ * This is a helper method for actors that want to recurse over their
+ * child actors, and cull them out.
+ *
+ * See #MetaCullable and meta_cullable_reset_culling() for more details.
+ */
+void
+meta_cullable_reset_culling_children (MetaCullable *cullable)
+{
+  ClutterActor *actor = CLUTTER_ACTOR (cullable);
+  ClutterActor *child;
+  ClutterActorIter iter;
+
+  clutter_actor_iter_init (&iter, actor);
+  while (clutter_actor_iter_next (&iter, &child))
+    {
+      if (!META_IS_CULLABLE (child))
+        continue;
+
+      meta_cullable_reset_culling (META_CULLABLE (child));
+    }
+}
+
+static void
+meta_cullable_default_init (MetaCullableInterface *iface)
+{
+}
+
+/**
+ * meta_cullable_cull_out:
+ * @cullable: The #MetaCullable
+ * @unobscured_region: The unobscured region, in @cullable's space.
+ * @clip_region: The clip region, in @cullable's space.
+ *
+ * When #MetaWindowGroup is painted, we walk over its direct cullable
+ * children from top to bottom and ask themselves to "cull out". Cullables
+ * can use @unobscured_region and @clip_region to clip their drawing. Actors
+ * interested in eliminating overdraw should copy the @clip_region and only
+ * paint those parts, as everything else has been obscured by actors above it.
+ *
+ * Actors that may have fully opaque parts should also subtract out a region
+ * that is fully opaque from @unobscured_region and @clip_region.
+ *
+ * @unobscured_region and @clip_region are extremely similar. The difference
+ * is that @clip_region starts off with the stage's clip, if Clutter detects
+ * that we're doing a clipped redraw. @unobscured_region, however, starts off
+ * with the full stage size, so actors that may want to record what parts of
+ * their window are unobscured for e.g. scheduling repaints can do so.
+ *
+ * Actors that have children can also use the meta_cullable_cull_out_children()
+ * helper method to do a simple cull across all their children.
+ */
+void
+meta_cullable_cull_out (MetaCullable   *cullable,
+                        cairo_region_t *unobscured_region,
+                        cairo_region_t *clip_region)
+{
+  META_CULLABLE_GET_IFACE (cullable)->cull_out (cullable, unobscured_region, clip_region);
+}
+
+/**
+ * meta_cullable_reset_culling:
+ * @cullable: The #MetaCullable
+ *
+ * Actors that copied data in their cull_out() implementation can now
+ * reset their data, as the paint is now over. Additional paints may be
+ * done by #ClutterClone or similar, and they should not be affected by
+ * the culling operation.
+ */
+void
+meta_cullable_reset_culling (MetaCullable *cullable)
+{
+  META_CULLABLE_GET_IFACE (cullable)->reset_culling (cullable);
+}
--- a/src/compositor/meta-cullable.h
+++ b/src/compositor/meta-cullable.h
@@ -0,0 +1,66 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/*
+ * Copyright (C) 2013 Red Hat
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Written by:
+ *     Owen Taylor <otaylor@redhat.com>
+ *     Ray Strode <rstrode@redhat.com>
+ *     Jasper St. Pierre <jstpierre@mecheye.net>
+ */
+
+#ifndef __META_CULLABLE_H__
+#define __META_CULLABLE_H__
+
+#include <clutter/clutter.h>
+
+G_BEGIN_DECLS
+
+#define META_TYPE_CULLABLE             (meta_cullable_get_type ())
+#define META_CULLABLE(obj)             (G_TYPE_CHECK_INSTANCE_CAST ((obj), META_TYPE_CULLABLE, MetaCullable))
+#define META_IS_CULLABLE(obj)          (G_TYPE_CHECK_INSTANCE_TYPE ((obj), META_TYPE_CULLABLE))
+#define META_CULLABLE_GET_IFACE(obj)   (G_TYPE_INSTANCE_GET_INTERFACE ((obj),  META_TYPE_CULLABLE, MetaCullableInterface))
+
+typedef struct _MetaCullable MetaCullable;
+typedef struct _MetaCullableInterface MetaCullableInterface;
+
+struct _MetaCullableInterface
+{
+  GTypeInterface g_iface;
+
+  void (* cull_out)      (MetaCullable   *cullable,
+                          cairo_region_t *unobscured_region,
+                          cairo_region_t *clip_region);
+  void (* reset_culling) (MetaCullable  *cullable);
+};
+
+GType meta_cullable_get_type (void);
+
+void meta_cullable_cull_out (MetaCullable   *cullable,
+                             cairo_region_t *unobscured_region,
+                             cairo_region_t *clip_region);
+void meta_cullable_reset_culling (MetaCullable *cullable);
+
+/* Utility methods for implementations */
+void meta_cullable_cull_out_children (MetaCullable   *cullable,
+                                      cairo_region_t *unobscured_region,
+                                      cairo_region_t *clip_region);
+void meta_cullable_reset_culling_children (MetaCullable *cullable);
+
+G_END_DECLS
+
+#endif /* __META_CULLABLE_H__ */
+
--- a/src/compositor/meta-module.c
+++ b/src/compositor/meta-module.c
@@ -16,9 +16,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #include <meta/meta-plugin.h>
--- a/src/compositor/meta-module.h
+++ b/src/compositor/meta-module.h
@@ -16,9 +16,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef META_MODULE_H_
--- a/src/compositor/meta-plugin-manager.c
+++ b/src/compositor/meta-plugin-manager.c
@@ -16,9 +16,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #include "config.h"
@@ -326,3 +324,44 @@ meta_plugin_manager_confirm_display_change (MetaPluginManager *plugin_mgr)
  else
    return meta_plugin_complete_display_change (plugin, TRUE);
 }
+
+gboolean
+meta_plugin_manager_show_tile_preview (MetaPluginManager *plugin_mgr,
+                                       MetaWindow        *window,
+                                       MetaRectangle     *tile_rect,
+                                       int                tile_monitor_number)
+{
+  MetaPlugin *plugin = plugin_mgr->plugin;
+  MetaPluginClass *klass = META_PLUGIN_GET_CLASS (plugin);
+  MetaDisplay *display  = meta_screen_get_display (plugin_mgr->screen);
+
+  if (display->display_opening)
+    return FALSE;
+
+  if (klass->show_tile_preview)
+    {
+      klass->show_tile_preview (plugin, window, tile_rect, tile_monitor_number);
+      return TRUE;
+    }
+
+  return FALSE;
+}
+
+gboolean
+meta_plugin_manager_hide_tile_preview (MetaPluginManager *plugin_mgr)
+{
+  MetaPlugin *plugin = plugin_mgr->plugin;
+  MetaPluginClass *klass = META_PLUGIN_GET_CLASS (plugin);
+  MetaDisplay *display  = meta_screen_get_display (plugin_mgr->screen);
+
+  if (display->display_opening)
+    return FALSE;
+
+  if (klass->hide_tile_preview)
+    {
+      klass->hide_tile_preview (plugin);
+      return TRUE;
+    }
+
+  return FALSE;
+}
--- a/src/compositor/meta-plugin-manager.h
+++ b/src/compositor/meta-plugin-manager.h
@@ -16,9 +16,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef META_PLUGIN_MANAGER_H_
@@ -77,4 +75,9 @@ gboolean _meta_plugin_xevent_filter (MetaPlugin *plugin,

 void     meta_plugin_manager_confirm_display_change (MetaPluginManager *mgr);

+gboolean meta_plugin_manager_show_tile_preview (MetaPluginManager *mgr,
+                                                MetaWindow        *window,
+                                                MetaRectangle     *tile_rect,
+                                                int                tile_monitor_number);
+gboolean meta_plugin_manager_hide_tile_preview (MetaPluginManager *mgr);
 #endif
--- a/src/compositor/meta-plugin.c
+++ b/src/compositor/meta-plugin.c
@@ -16,9 +16,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 /**
@@ -32,6 +30,7 @@
 #include "meta-plugin-manager.h"
 #include <meta/screen.h>
 #include <meta/display.h>
+#include <meta/util.h>

 #include <string.h>
 #include <X11/Xlib.h>
--- a/src/compositor/meta-shadow-factory-private.h
+++ b/src/compositor/meta-shadow-factory-private.h
@@ -17,9 +17,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef __META_SHADOW_FACTORY_PRIVATE_H__
--- a/src/compositor/meta-shadow-factory.c
+++ b/src/compositor/meta-shadow-factory.c
@@ -13,9 +13,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 /**
--- a/src/compositor/meta-shaped-texture-private.h
+++ b/src/compositor/meta-shaped-texture-private.h
@@ -28,17 +28,12 @@
 #define __META_SHAPED_TEXTURE_PRIVATE_H__

 #include <meta/meta-shaped-texture.h>
-#include "meta-wayland-private.h"

-ClutterActor *meta_shaped_texture_new_with_xwindow (Window xwindow);
-ClutterActor *meta_shaped_texture_new_with_wayland_surface  (MetaWaylandSurface *surface);
-void meta_shaped_texture_set_wayland_surface                (MetaShapedTexture  *stex,
-                                                             MetaWaylandSurface *surface);
-MetaWaylandSurface *meta_shaped_texture_get_wayland_surface (MetaShapedTexture *stex);
-
-void meta_shaped_texture_set_pixmap (MetaShapedTexture *stex,
-                                     Pixmap             pixmap);
-void meta_shaped_texture_attach_wayland_buffer (MetaShapedTexture  *stex,
-                                                MetaWaylandBuffer  *buffer);
+ClutterActor *meta_shaped_texture_new (void);
+void meta_shaped_texture_set_texture (MetaShapedTexture *stex,
+                                      CoglTexture       *texture);
+gboolean meta_shaped_texture_get_unobscured_bounds (MetaShapedTexture     *stex,
+                                                    cairo_rectangle_int_t *unobscured_bounds);
+gboolean meta_shaped_texture_is_obscured (MetaShapedTexture *self);

 #endif
--- a/src/compositor/meta-shaped-texture.c
+++ b/src/compositor/meta-shaped-texture.c
@@ -16,9 +16,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 /**
@@ -31,22 +29,20 @@

 #include <meta/meta-shaped-texture.h>
 #include <meta/util.h>
+#include "clutter-utils.h"
 #include "meta-texture-tower.h"

 #include "meta-shaped-texture-private.h"
-#include "meta-wayland-private.h"
-#include <cogl/cogl-wayland-server.h>
+#include "meta-window-actor-private.h"

 #include <clutter/clutter.h>
 #include <cogl/cogl.h>
-#include <cogl/cogl-texture-pixmap-x11.h>
 #include <gdk/gdk.h> /* for gdk_rectangle_intersect() */
+#include "meta-cullable.h"

 static void meta_shaped_texture_dispose  (GObject    *object);

 static void meta_shaped_texture_paint (ClutterActor       *actor);
-static void meta_shaped_texture_pick  (ClutterActor       *actor,
-				       const ClutterColor *color);

 static void meta_shaped_texture_get_preferred_width (ClutterActor *self,
                                                     gfloat        for_height,
@@ -60,15 +56,10 @@ static void meta_shaped_texture_get_preferred_height (ClutterActor *self,

 static gboolean meta_shaped_texture_get_paint_volume (ClutterActor *self, ClutterPaintVolume *volume);

-typedef enum _MetaShapedTextureType
-{
-  META_SHAPED_TEXTURE_TYPE_X11_PIXMAP,
-  META_SHAPED_TEXTURE_TYPE_WAYLAND_SURFACE,
-} MetaShapedTextureType;
+static void cullable_iface_init (MetaCullableInterface *iface);

-
-G_DEFINE_TYPE (MetaShapedTexture, meta_shaped_texture,
-               CLUTTER_TYPE_ACTOR);
+G_DEFINE_TYPE_WITH_CODE (MetaShapedTexture, meta_shaped_texture, CLUTTER_TYPE_ACTOR,
+                         G_IMPLEMENT_INTERFACE (META_TYPE_CULLABLE, cullable_iface_init));

 #define META_SHAPED_TEXTURE_GET_PRIVATE(obj) \
  (G_TYPE_INSTANCE_GET_PRIVATE ((obj), META_TYPE_SHAPED_TEXTURE, \
@@ -78,24 +69,16 @@ struct _MetaShapedTexturePrivate
 {
  MetaTextureTower *paint_tower;

-  MetaShapedTextureType type;
-  union {
-    struct {
-      Pixmap pixmap;
-    } x11;
-    struct {
-      MetaWaylandSurface *surface;
-    } wayland;
-  };
-
  CoglTexture *texture;
-
  CoglTexture *mask_texture;

-  cairo_region_t *clip_region;
-  cairo_region_t *input_shape_region;
+  /* The region containing only fully opaque pixels */
  cairo_region_t *opaque_region;

+  /* MetaCullable regions, see that documentation for more details */
+  cairo_region_t *clip_region;
+  cairo_region_t *unobscured_region;
+
  guint tex_width, tex_height;

  guint create_mipmaps : 1;
@@ -112,7 +95,6 @@ meta_shaped_texture_class_init (MetaShapedTextureClass *klass)
  actor_class->get_preferred_width = meta_shaped_texture_get_preferred_width;
  actor_class->get_preferred_height = meta_shaped_texture_get_preferred_height;
  actor_class->paint = meta_shaped_texture_paint;
-  actor_class->pick = meta_shaped_texture_pick;
  actor_class->get_paint_volume = meta_shaped_texture_get_paint_volume;

  g_type_class_add_private (klass, sizeof (MetaShapedTexturePrivate));
@@ -127,13 +109,37 @@ meta_shaped_texture_init (MetaShapedTexture *self)

  priv->paint_tower = meta_texture_tower_new ();

-  priv->type = META_SHAPED_TEXTURE_TYPE_X11_PIXMAP;
  priv->texture = NULL;
-
  priv->mask_texture = NULL;
  priv->create_mipmaps = TRUE;
 }

+static void
+set_unobscured_region (MetaShapedTexture *self,
+                       cairo_region_t    *unobscured_region)
+{
+  MetaShapedTexturePrivate *priv = self->priv;
+
+  g_clear_pointer (&priv->unobscured_region, (GDestroyNotify) cairo_region_destroy);
+  if (unobscured_region)
+    {
+      cairo_rectangle_int_t bounds = { 0, 0, priv->tex_width, priv->tex_height };
+      priv->unobscured_region = cairo_region_copy (unobscured_region);
+      cairo_region_intersect_rectangle (priv->unobscured_region, &bounds);
+    }
+}
+
+static void
+set_clip_region (MetaShapedTexture *self,
+                 cairo_region_t    *clip_region)
+{
+  MetaShapedTexturePrivate *priv = self->priv;
+
+  g_clear_pointer (&priv->clip_region, (GDestroyNotify) cairo_region_destroy);
+  if (clip_region)
+    priv->clip_region = cairo_region_copy (clip_region);
+}
+
 static void
 meta_shaped_texture_dispose (GObject *object)
 {
@@ -148,7 +154,8 @@ meta_shaped_texture_dispose (GObject *object)
  g_clear_pointer (&priv->opaque_region, cairo_region_destroy);

  meta_shaped_texture_set_mask_texture (self, NULL);
-  meta_shaped_texture_set_clip_region (self, NULL);
+  set_unobscured_region (self, NULL);
+  set_clip_region (self, NULL);

  G_OBJECT_CLASS (meta_shaped_texture_parent_class)->dispose (object);
 }
@@ -219,10 +226,8 @@ paint_clipped_rectangle (CoglFramebuffer       *fb,
  cogl_framebuffer_draw_multitextured_rectangle (fb, pipeline,
                                                 x1, y1, x2, y2,
                                                 &coords[0], 8);
-
 }

-
 static void
 set_cogl_texture (MetaShapedTexture *stex,
                  CoglTexture       *cogl_tex)
@@ -237,10 +242,11 @@ set_cogl_texture (MetaShapedTexture *stex,
  if (priv->texture)
    cogl_object_unref (priv->texture);

-  priv->texture = cogl_object_ref (cogl_tex);
+  priv->texture = cogl_tex;

  if (cogl_tex != NULL)
    {
+      cogl_object_ref (cogl_tex);
      width = cogl_texture_get_width (COGL_TEXTURE (cogl_tex));
      height = cogl_texture_get_height (COGL_TEXTURE (cogl_tex));

@@ -265,6 +271,9 @@ set_cogl_texture (MetaShapedTexture *stex,
   * know how much of the buffer has changed with respect to the
   * previous buffer. We only queue a redraw in response to surface
   * damage. */
+
+  if (priv->create_mipmaps)
+    meta_texture_tower_set_base_texture (priv->paint_tower, cogl_tex);
 }

 static void
@@ -280,6 +289,7 @@ meta_shaped_texture_paint (ClutterActor *actor)
  CoglTexture *paint_tex;
  ClutterActorBox alloc;
  cairo_region_t *blended_region = NULL;
+  CoglPipelineFilter filter;

  if (priv->clip_region && cairo_region_is_empty (priv->clip_region))
    return;
@@ -316,6 +326,15 @@ meta_shaped_texture_paint (ClutterActor *actor)
  if (tex_width == 0 || tex_height == 0) /* no contents yet */
    return;

+  /* Use nearest-pixel interpolation if the texture is unscaled. This
+   * improves performance, especially with software rendering.
+   */
+
+  filter = COGL_PIPELINE_FILTER_LINEAR;
+
+  if (!clutter_actor_is_in_clone_paint (actor) && meta_actor_is_untransformed (actor, NULL, NULL))
+    filter = COGL_PIPELINE_FILTER_NEAREST;
+
  ctx = clutter_backend_get_cogl_context (clutter_get_default_backend ());
  fb = cogl_get_draw_framebuffer ();

@@ -344,6 +363,7 @@ meta_shaped_texture_paint (ClutterActor *actor)

      opaque_pipeline = get_unblended_pipeline (ctx);
      cogl_pipeline_set_layer_texture (opaque_pipeline, 0, paint_tex);
+      cogl_pipeline_set_layer_filters (opaque_pipeline, 0, filter, filter);

      n_rects = cairo_region_num_rectangles (region);
      for (i = 0; i < n_rects; i++)
@@ -385,9 +405,11 @@ meta_shaped_texture_paint (ClutterActor *actor)
    {
      pipeline = get_masked_pipeline (ctx);
      cogl_pipeline_set_layer_texture (pipeline, 1, priv->mask_texture);
+      cogl_pipeline_set_layer_filters (pipeline, 1, filter, filter);
    }

  cogl_pipeline_set_layer_texture (pipeline, 0, paint_tex);
+  cogl_pipeline_set_layer_filters (pipeline, 0, filter, filter);

  {
    CoglColor color;
@@ -437,71 +459,6 @@ meta_shaped_texture_paint (ClutterActor *actor)
    cairo_region_destroy (blended_region);
 }

-static void
-meta_shaped_texture_pick (ClutterActor       *actor,
-			  const ClutterColor *color)
-{
-  MetaShapedTexture *stex = (MetaShapedTexture *) actor;
-  MetaShapedTexturePrivate *priv = stex->priv;
-
-  if (!clutter_actor_should_pick_paint (actor) ||
-      (priv->clip_region && cairo_region_is_empty (priv->clip_region)))
-    return;
-
-  /* If there is no region then use the regular pick */
-  if (priv->input_shape_region == NULL)
-    CLUTTER_ACTOR_CLASS (meta_shaped_texture_parent_class)->pick (actor, color);
-  else
-    {
-      int n_rects;
-      float *rectangles;
-      int i;
-      CoglPipeline *pipeline;
-      CoglContext *ctx;
-      CoglFramebuffer *fb;
-      CoglColor cogl_color;
-
-      /* Note: We don't bother trying to intersect the pick and clip regions
-       * since needing to copy the region, do the intersection, and probably
-       * increase the number of rectangles seems more likely to have a negative
-       * effect.
-       *
-       * NB: Most of the time when just using rectangles for picking then
-       * picking shouldn't involve any rendering, and minimizing the number of
-       * rectangles has more benefit than reducing the area of the pick
-       * region.
-       */
-
-      n_rects = cairo_region_num_rectangles (priv->input_shape_region);
-      rectangles = g_alloca (sizeof (float) * 4 * n_rects);
-
-      for (i = 0; i < n_rects; i++)
-        {
-          cairo_rectangle_int_t rect;
-          int pos = i * 4;
-
-          cairo_region_get_rectangle (priv->input_shape_region, i, &rect);
-
-          rectangles[pos] = rect.x;
-          rectangles[pos + 1] = rect.y;
-          rectangles[pos + 2] = rect.x + rect.width;
-          rectangles[pos + 3] = rect.y + rect.height;
-        }
-
-      ctx = clutter_backend_get_cogl_context (clutter_get_default_backend ());
-      fb = cogl_get_draw_framebuffer ();
-
-      cogl_color_init_from_4ub (&cogl_color, color->red, color->green, color->blue, color->alpha);
-
-      pipeline = cogl_pipeline_new (ctx);
-      cogl_pipeline_set_color (pipeline, &cogl_color);
-
-      cogl_framebuffer_draw_rectangles (fb, pipeline,
-                                        rectangles, n_rects);
-      cogl_object_unref (pipeline);
-    }
-}
-
 static void
 meta_shaped_texture_get_preferred_width (ClutterActor *self,
                                         gfloat        for_height,
@@ -541,52 +498,37 @@ meta_shaped_texture_get_preferred_height (ClutterActor *self,
 }

 static gboolean
-meta_shaped_texture_get_paint_volume (ClutterActor *self,
+meta_shaped_texture_get_paint_volume (ClutterActor *actor,
                                      ClutterPaintVolume *volume)
 {
-  return clutter_paint_volume_set_from_allocation (volume, self);
-}
+  MetaShapedTexture *self = META_SHAPED_TEXTURE (actor);
+  cairo_rectangle_int_t unobscured_bounds;

-ClutterActor *
-meta_shaped_texture_new_with_wayland_surface (MetaWaylandSurface *surface)
-{
-  ClutterActor *actor = g_object_new (META_TYPE_SHAPED_TEXTURE, NULL);
-  MetaShapedTexturePrivate *priv = META_SHAPED_TEXTURE (actor)->priv;
+  if (!clutter_paint_volume_set_from_allocation (volume, actor))
+    return FALSE;

-  /* XXX: it could probably be better to have a "type" construct-only
-   * property or create wayland/x11 subclasses */
-  priv->type = META_SHAPED_TEXTURE_TYPE_WAYLAND_SURFACE;
+  if (meta_shaped_texture_get_unobscured_bounds (self, &unobscured_bounds))
+    {
+      ClutterVertex origin;
+      cairo_rectangle_int_t bounds;

-  meta_shaped_texture_set_wayland_surface (META_SHAPED_TEXTURE (actor),
-                                           surface);
+      /* I hate ClutterPaintVolume so much... */
+      clutter_paint_volume_get_origin (volume, &origin);
+      bounds.x = origin.x;
+      bounds.y = origin.y;
+      bounds.width = clutter_paint_volume_get_width (volume);
+      bounds.height = clutter_paint_volume_get_height (volume);

-  return actor;
-}
+      gdk_rectangle_intersect (&bounds, &unobscured_bounds, &bounds);

-void
-meta_shaped_texture_set_wayland_surface (MetaShapedTexture *stex,
-                                         MetaWaylandSurface *surface)
-{
-  MetaShapedTexturePrivate *priv = stex->priv;
+      origin.x = bounds.x;
+      origin.y = bounds.y;
+      clutter_paint_volume_set_origin (volume, &origin);
+      clutter_paint_volume_set_width (volume, bounds.width);
+      clutter_paint_volume_set_height (volume, bounds.height);
+    }

-  priv->wayland.surface = surface;
-
-  if (surface && surface->buffer_ref.buffer)
-    meta_shaped_texture_attach_wayland_buffer (stex,
-                                               surface->buffer_ref.buffer);
-}
-
-MetaWaylandSurface *
-meta_shaped_texture_get_wayland_surface (MetaShapedTexture *stex)
-{
-  MetaShapedTexturePrivate *priv = stex->priv;
-  return priv->wayland.surface;
-}
-
-ClutterActor *
-meta_shaped_texture_new_with_xwindow (Window xwindow)
-{
-  return g_object_new (META_TYPE_SHAPED_TEXTURE, NULL);
+  return TRUE;
 }

 void
@@ -631,110 +573,48 @@ meta_shaped_texture_set_mask_texture (MetaShapedTexture *stex,
  clutter_actor_queue_redraw (CLUTTER_ACTOR (stex));
 }

-static void
-wayland_surface_update_area (MetaShapedTexture *stex,
-                             int                x,
-                             int                y,
-                             int                width,
-                             int                height)
+static cairo_region_t *
+effective_unobscured_region (MetaShapedTexture *self)
 {
-  MetaShapedTexturePrivate *priv;
-  MetaWaylandBuffer *buffer;
+  MetaShapedTexturePrivate *priv = self->priv;
+  ClutterActor *parent = clutter_actor_get_parent (CLUTTER_ACTOR (self));

-  priv = stex->priv;
+  if (clutter_actor_has_mapped_clones (CLUTTER_ACTOR (self)))
+    return NULL;

-  g_return_if_fail (priv->type == META_SHAPED_TEXTURE_TYPE_WAYLAND_SURFACE);
-  g_return_if_fail (priv->texture != NULL);
+  while (parent && !META_IS_WINDOW_ACTOR (parent))
+    parent = clutter_actor_get_parent (parent);

-  buffer = priv->wayland.surface->buffer_ref.buffer;
+  if (parent && clutter_actor_has_mapped_clones (parent))
+    return NULL;

-  if (buffer)
-    {
-      struct wl_resource *resource = buffer->resource;
-      struct wl_shm_buffer *shm_buffer = wl_shm_buffer_get (resource);
-
-      if (shm_buffer)
-        {
-          CoglPixelFormat format;
-
-          switch (wl_shm_buffer_get_format (shm_buffer))
-            {
-#if G_BYTE_ORDER == G_BIG_ENDIAN
-            case WL_SHM_FORMAT_ARGB8888:
-              format = COGL_PIXEL_FORMAT_ARGB_8888_PRE;
-              break;
-            case WL_SHM_FORMAT_XRGB8888:
-              format = COGL_PIXEL_FORMAT_ARGB_8888;
-              break;
-#elif G_BYTE_ORDER == G_LITTLE_ENDIAN
-            case WL_SHM_FORMAT_ARGB8888:
-              format = COGL_PIXEL_FORMAT_BGRA_8888_PRE;
-              break;
-            case WL_SHM_FORMAT_XRGB8888:
-              format = COGL_PIXEL_FORMAT_BGRA_8888;
-              break;
-#endif
-            default:
-              g_warn_if_reached ();
-              format = COGL_PIXEL_FORMAT_ARGB_8888;
-            }
-
-          cogl_texture_set_region (priv->texture,
-                                   x, y,
-                                   x, y,
-                                   width, height,
-                                   width, height,
-                                   format,
-                                   wl_shm_buffer_get_stride (shm_buffer),
-                                   wl_shm_buffer_get_data (shm_buffer));
-        }
-    }
+  return priv->unobscured_region;
 }

-static gboolean
-get_clip (MetaShapedTexture *stex,
-          int x,
-          int y,
-          int width,
-          int height,
-          cairo_rectangle_int_t *clip)
+gboolean
+meta_shaped_texture_get_unobscured_bounds (MetaShapedTexture     *self,
+                                           cairo_rectangle_int_t *unobscured_bounds)
 {
-  ClutterActor *self = CLUTTER_ACTOR (stex);
-  MetaShapedTexturePrivate *priv;
-  ClutterActorBox allocation;
-  float scale_x;
-  float scale_y;
+  cairo_region_t *unobscured_region = effective_unobscured_region (self);

-  /* NB: clutter_actor_queue_redraw_with_clip expects a box in the actor's
-   * coordinate space so we need to convert from surface coordinates to
-   * actor coordinates...
-   */
-
-  /* Calling clutter_actor_get_allocation_box() is enormously expensive
-   * if the actor has an out-of-date allocation, since it triggers
-   * a full redraw. clutter_actor_queue_redraw_with_clip() would redraw
-   * the whole stage anyways in that case, so just go ahead and do
-   * it here.
-   */
-  if (!clutter_actor_has_allocation (self))
+  if (unobscured_region)
+    {
+      cairo_region_get_extents (unobscured_region, unobscured_bounds);
+      return TRUE;
+    }
+  else
    return FALSE;
+}

-  priv = stex->priv;
+gboolean
+meta_shaped_texture_is_obscured (MetaShapedTexture *self)
+{
+  cairo_region_t *unobscured_region = effective_unobscured_region (self);

-  if (priv->tex_width == 0 || priv->tex_height == 0)
+  if (unobscured_region)
+    return cairo_region_is_empty (unobscured_region);
+  else
    return FALSE;
-
-  clutter_actor_get_allocation_box (self, &allocation);
-
-  scale_x = (allocation.x2 - allocation.x1) / priv->tex_width;
-  scale_y = (allocation.y2 - allocation.y1) / priv->tex_height;
-
-  clip->x = x * scale_x;
-  clip->y = y * scale_y;
-  clip->width = width * scale_x;
-  clip->height = height * scale_y;
-
-  return TRUE;
 }

 /**
@@ -744,14 +624,9 @@ get_clip (MetaShapedTexture *stex,
 * @y: the y coordinate of the damaged area
 * @width: the width of the damaged area
 * @height: the height of the damaged area
- * @unobscured_region: The unobscured region of the window or %NULL if
- * there is no valid one (like when the actor is transformed or
- * has a mapped clone)
 *
 * Repairs the damaged area indicated by @x, @y, @width and @height
- * and queues a redraw for the intersection @visibible_region and
- * the damage area. If @visibible_region is %NULL a redraw will always
- * get queued.
+ * and potentially queues a redraw.
 *
 * Return value: Whether a redraw have been queued or not
 */
@@ -760,33 +635,20 @@ meta_shaped_texture_update_area (MetaShapedTexture *stex,
 				 int                x,
 				 int                y,
 				 int                width,
-				 int                height,
-				 cairo_region_t    *unobscured_region)
+				 int                height)
 {
  MetaShapedTexturePrivate *priv;
-  cairo_rectangle_int_t clip;
-  gboolean has_clip;
+  cairo_region_t *unobscured_region;
+  const cairo_rectangle_int_t clip = { x, y, width, height };

  priv = stex->priv;

  if (priv->texture == NULL)
    return FALSE;

-  switch (priv->type)
-    {
-    case META_SHAPED_TEXTURE_TYPE_X11_PIXMAP:
-      cogl_texture_pixmap_x11_update_area (COGL_TEXTURE_PIXMAP_X11 (priv->texture),
-                                           x, y, width, height);
-      break;
-    case META_SHAPED_TEXTURE_TYPE_WAYLAND_SURFACE:
-      wayland_surface_update_area (stex, x, y, width, height);
-      break;
-    }
-
  meta_texture_tower_update_area (priv->paint_tower, x, y, width, height);

-  has_clip = get_clip (stex, x, y, width, height, &clip);
-
+  unobscured_region = effective_unobscured_region (stex);
  if (unobscured_region)
    {
      cairo_region_t *intersection;
@@ -795,8 +657,7 @@ meta_shaped_texture_update_area (MetaShapedTexture *stex,
        return FALSE;

      intersection = cairo_region_copy (unobscured_region);
-      if (has_clip)
-	cairo_region_intersect_rectangle (intersection, &clip);
+      cairo_region_intersect_rectangle (intersection, &clip);

      if (!cairo_region_is_empty (intersection))
        {
@@ -804,84 +665,31 @@ meta_shaped_texture_update_area (MetaShapedTexture *stex,
          cairo_region_get_extents (intersection, &damage_rect);
          clutter_actor_queue_redraw_with_clip (CLUTTER_ACTOR (stex), &damage_rect);
          cairo_region_destroy (intersection);
-
          return TRUE;
        }

      cairo_region_destroy (intersection);
-
      return FALSE;
    }
-
-  if (has_clip)
-    clutter_actor_queue_redraw_with_clip (CLUTTER_ACTOR (stex), &clip);
  else
-    clutter_actor_queue_redraw (CLUTTER_ACTOR (stex));
-
-  return TRUE;
+    {
+      clutter_actor_queue_redraw_with_clip (CLUTTER_ACTOR (stex), &clip);
+      return TRUE;
+    }
 }

 /**
- * meta_shaped_texture_set_pixmap:
+ * meta_shaped_texture_set_texture:
 * @stex: The #MetaShapedTexture
- * @pixmap: The pixmap you want the stex to assume
+ * @pixmap: The #CoglTexture to display
 */
 void
-meta_shaped_texture_set_pixmap (MetaShapedTexture *stex,
-                                Pixmap             pixmap)
+meta_shaped_texture_set_texture (MetaShapedTexture *stex,
+                                 CoglTexture       *texture)
 {
-  MetaShapedTexturePrivate *priv;
-
  g_return_if_fail (META_IS_SHAPED_TEXTURE (stex));

-  priv = stex->priv;
-
-  if (priv->x11.pixmap == pixmap)
-    return;
-
-  priv->x11.pixmap = pixmap;
-
-  if (pixmap != None)
-    {
-      CoglContext *ctx =
-        clutter_backend_get_cogl_context (clutter_get_default_backend ());
-      CoglTexture *texture =
-        COGL_TEXTURE (cogl_texture_pixmap_x11_new (ctx, pixmap, FALSE, NULL));
-      set_cogl_texture (stex, texture);
-    }
-  else
-    set_cogl_texture (stex, NULL);
-
-  if (priv->create_mipmaps)
-    meta_texture_tower_set_base_texture (priv->paint_tower,
-                                         COGL_TEXTURE (priv->texture));
-}
-
-void
-meta_shaped_texture_attach_wayland_buffer (MetaShapedTexture  *stex,
-                                           MetaWaylandBuffer  *buffer)
-{
-  MetaShapedTexturePrivate *priv;
-
-  g_return_if_fail (META_IS_SHAPED_TEXTURE (stex));
-
-  priv = stex->priv;
-
-  /* TODO: we should change this api to be something like
-   * meta_shaped_texture_notify_buffer_attach() since we now maintain
-   * a reference to the MetaWaylandSurface where we can access the
-   * buffer without it being explicitly passed as an argument.
-   */
-  g_return_if_fail (priv->wayland.surface->buffer_ref.buffer == buffer);
-
-  if (buffer)
-    set_cogl_texture (stex, buffer->texture);
-  else
-    set_cogl_texture (stex, NULL);
-
-  if (priv->create_mipmaps)
-    meta_texture_tower_set_base_texture (priv->paint_tower,
-                                         COGL_TEXTURE (priv->texture));
+  set_cogl_texture (stex, texture);
 }

 /**
@@ -897,74 +705,6 @@ meta_shaped_texture_get_texture (MetaShapedTexture *stex)
  return COGL_TEXTURE (stex->priv->texture);
 }

-/**
- * meta_shaped_texture_set_input_shape_region:
- * @stex: a #MetaShapedTexture
- * @shape_region: the region of the texture that should respond to
- *    input.
- *
- * Determines what region of the texture should accept input. For
- * X based windows this is defined by the ShapeInput region of the
- * window.
- */
-void
-meta_shaped_texture_set_input_shape_region (MetaShapedTexture *stex,
-                                            cairo_region_t    *shape_region)
-{
-  MetaShapedTexturePrivate *priv;
-
-  g_return_if_fail (META_IS_SHAPED_TEXTURE (stex));
-
-  priv = stex->priv;
-
-  if (priv->input_shape_region != NULL)
-    {
-      cairo_region_destroy (priv->input_shape_region);
-      priv->input_shape_region = NULL;
-    }
-
-  if (shape_region != NULL)
-    {
-      cairo_region_reference (shape_region);
-      priv->input_shape_region = shape_region;
-    }
-
-  clutter_actor_queue_redraw (CLUTTER_ACTOR (stex));
-}
-
-/**
- * meta_shaped_texture_set_clip_region:
- * @stex: a #MetaShapedTexture
- * @clip_region: the region of the texture that is visible and
- *   should be painted.
- *
- * Provides a hint to the texture about what areas of the texture
- * are not completely obscured and thus need to be painted. This
- * is an optimization and is not supposed to have any effect on
- * the output.
- *
- * Typically a parent container will set the clip region before
- * painting its children, and then unset it afterwards.
- */
-void
-meta_shaped_texture_set_clip_region (MetaShapedTexture *stex,
-				     cairo_region_t    *clip_region)
-{
-  MetaShapedTexturePrivate *priv;
-
-  g_return_if_fail (META_IS_SHAPED_TEXTURE (stex));
-
-  priv = stex->priv;
-
-  if (priv->clip_region)
-    cairo_region_destroy (priv->clip_region);
-
-  if (clip_region)
-    priv->clip_region = cairo_region_copy (clip_region);
-  else
-    priv->clip_region = NULL;
-}
-
 /**
 * meta_shaped_texture_set_opaque_region:
 * @stex: a #MetaShapedTexture
@@ -1092,3 +832,46 @@ meta_shaped_texture_get_image (MetaShapedTexture     *stex,

  return surface;
 }
+
+static void
+meta_shaped_texture_cull_out (MetaCullable   *cullable,
+                              cairo_region_t *unobscured_region,
+                              cairo_region_t *clip_region)
+{
+  MetaShapedTexture *self = META_SHAPED_TEXTURE (cullable);
+  MetaShapedTexturePrivate *priv = self->priv;
+
+  set_unobscured_region (self, unobscured_region);
+  set_clip_region (self, clip_region);
+
+  if (clutter_actor_get_paint_opacity (CLUTTER_ACTOR (self)) == 0xff)
+    {
+      if (priv->opaque_region)
+        {
+          if (unobscured_region)
+            cairo_region_subtract (unobscured_region, priv->opaque_region);
+          if (clip_region)
+            cairo_region_subtract (clip_region, priv->opaque_region);
+        }
+    }
+}
+
+static void
+meta_shaped_texture_reset_culling (MetaCullable *cullable)
+{
+  MetaShapedTexture *self = META_SHAPED_TEXTURE (cullable);
+  set_clip_region (self, NULL);
+}
+
+static void
+cullable_iface_init (MetaCullableInterface *iface)
+{
+  iface->cull_out = meta_shaped_texture_cull_out;
+  iface->reset_culling = meta_shaped_texture_reset_culling;
+}
+
+ClutterActor *
+meta_shaped_texture_new (void)
+{
+  return g_object_new (META_TYPE_SHAPED_TEXTURE, NULL);
+}
--- a/src/compositor/meta-surface-actor-wayland.c
+++ b/src/compositor/meta-surface-actor-wayland.c
@@ -0,0 +1,164 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/*
+ * Copyright (C) 2013 Red Hat
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written by:
+ *     Jasper St. Pierre <jstpierre@mecheye.net>
+ */
+
+#include "config.h"
+
+#include "meta-surface-actor-wayland.h"
+
+#include <cogl/cogl-wayland-server.h>
+#include "meta-shaped-texture-private.h"
+#include "meta-wayland-private.h"
+
+struct _MetaSurfaceActorWaylandPrivate
+{
+  MetaWaylandSurface *surface;
+  MetaWaylandBuffer *buffer;
+};
+typedef struct _MetaSurfaceActorWaylandPrivate MetaSurfaceActorWaylandPrivate;
+
+G_DEFINE_TYPE_WITH_PRIVATE (MetaSurfaceActorWayland, meta_surface_actor_wayland, META_TYPE_SURFACE_ACTOR)
+
+static void
+meta_surface_actor_wayland_process_damage (MetaSurfaceActor *actor,
+                                           int x, int y, int width, int height)
+{
+  MetaSurfaceActorWayland *self = META_SURFACE_ACTOR_WAYLAND (actor);
+  MetaSurfaceActorWaylandPrivate *priv = meta_surface_actor_wayland_get_instance_private (self);
+
+  struct wl_resource *resource = priv->buffer->resource;
+  struct wl_shm_buffer *shm_buffer = wl_shm_buffer_get (resource);
+
+  if (shm_buffer)
+    {
+      CoglTexture2D *texture = COGL_TEXTURE_2D (priv->buffer->texture);
+      cogl_wayland_texture_set_region_from_shm_buffer (texture, x, y, width, height, shm_buffer, x, y, 0, NULL);
+    }
+
+  meta_surface_actor_update_area (META_SURFACE_ACTOR (self), x, y, width, height);
+}
+
+static void
+meta_surface_actor_wayland_pre_paint (MetaSurfaceActor *actor)
+{
+}
+
+static gboolean
+meta_surface_actor_wayland_is_argb32 (MetaSurfaceActor *actor)
+{
+  /* XXX -- look at the SHM buffer format. */
+  return TRUE;
+}
+
+static gboolean
+meta_surface_actor_wayland_is_visible (MetaSurfaceActor *actor)
+{
+  /* TODO: ensure that the buffer isn't NULL, implement
+   * wayland mapping semantics */
+  return TRUE;
+}
+
+static gboolean
+meta_surface_actor_wayland_should_unredirect (MetaSurfaceActor *actor)
+{
+  return FALSE;
+}
+
+static void
+meta_surface_actor_wayland_set_unredirected (MetaSurfaceActor *actor,
+                                             gboolean          unredirected)
+{
+  /* Do nothing. In the future, we'll use KMS to set this
+   * up as a hardware overlay or something. */
+}
+
+static gboolean
+meta_surface_actor_wayland_is_unredirected (MetaSurfaceActor *actor)
+{
+  return FALSE;
+}
+
+static MetaWindow *
+meta_surface_actor_wayland_get_window (MetaSurfaceActor *actor)
+{
+  MetaSurfaceActorWaylandPrivate *priv = meta_surface_actor_wayland_get_instance_private (META_SURFACE_ACTOR_WAYLAND (actor));
+
+  return priv->surface->window;
+}
+
+static void
+meta_surface_actor_wayland_class_init (MetaSurfaceActorWaylandClass *klass)
+{
+  MetaSurfaceActorClass *surface_actor_class = META_SURFACE_ACTOR_CLASS (klass);
+
+  surface_actor_class->process_damage = meta_surface_actor_wayland_process_damage;
+  surface_actor_class->pre_paint = meta_surface_actor_wayland_pre_paint;
+  surface_actor_class->is_argb32 = meta_surface_actor_wayland_is_argb32;
+  surface_actor_class->is_visible = meta_surface_actor_wayland_is_visible;
+
+  surface_actor_class->should_unredirect = meta_surface_actor_wayland_should_unredirect;
+  surface_actor_class->set_unredirected = meta_surface_actor_wayland_set_unredirected;
+  surface_actor_class->is_unredirected = meta_surface_actor_wayland_is_unredirected;
+
+  surface_actor_class->get_window = meta_surface_actor_wayland_get_window;
+}
+
+static void
+meta_surface_actor_wayland_init (MetaSurfaceActorWayland *self)
+{
+}
+
+MetaSurfaceActor *
+meta_surface_actor_wayland_new (MetaWaylandSurface *surface)
+{
+  MetaSurfaceActorWayland *self = g_object_new (META_TYPE_SURFACE_ACTOR_WAYLAND, NULL);
+  MetaSurfaceActorWaylandPrivate *priv = meta_surface_actor_wayland_get_instance_private (self);
+
+  g_assert (meta_is_wayland_compositor ());
+
+  priv->surface = surface;
+
+  return META_SURFACE_ACTOR (self);
+}
+
+void
+meta_surface_actor_wayland_set_buffer (MetaSurfaceActorWayland *self,
+                                       MetaWaylandBuffer       *buffer)
+{
+  MetaSurfaceActorWaylandPrivate *priv = meta_surface_actor_wayland_get_instance_private (self);
+  MetaShapedTexture *stex = meta_surface_actor_get_texture (META_SURFACE_ACTOR (self));
+
+  priv->buffer = buffer;
+
+  if (buffer)
+    meta_shaped_texture_set_texture (stex, buffer->texture);
+  else
+    meta_shaped_texture_set_texture (stex, NULL);
+}
+
+MetaWaylandSurface *
+meta_surface_actor_wayland_get_surface (MetaSurfaceActorWayland *self)
+{
+  MetaSurfaceActorWaylandPrivate *priv = meta_surface_actor_wayland_get_instance_private (self);
+  return priv->surface;
+}
--- a/src/compositor/meta-surface-actor-wayland.h
+++ b/src/compositor/meta-surface-actor-wayland.h
@@ -0,0 +1,66 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/*
+ * Copyright (C) 2013 Red Hat
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written by:
+ *     Jasper St. Pierre <jstpierre@mecheye.net>
+ */
+
+#ifndef __META_SURFACE_ACTOR_WAYLAND_H__
+#define __META_SURFACE_ACTOR_WAYLAND_H__
+
+#include <glib-object.h>
+
+#include "meta-surface-actor.h"
+
+#include "meta-wayland.h"
+
+G_BEGIN_DECLS
+
+#define META_TYPE_SURFACE_ACTOR_WAYLAND            (meta_surface_actor_wayland_get_type ())
+#define META_SURFACE_ACTOR_WAYLAND(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), META_TYPE_SURFACE_ACTOR_WAYLAND, MetaSurfaceActorWayland))
+#define META_SURFACE_ACTOR_WAYLAND_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  META_TYPE_SURFACE_ACTOR_WAYLAND, MetaSurfaceActorWaylandClass))
+#define META_IS_SURFACE_ACTOR_WAYLAND(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), META_TYPE_SURFACE_ACTOR_WAYLAND))
+#define META_IS_SURFACE_ACTOR_WAYLAND_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  META_TYPE_SURFACE_ACTOR_WAYLAND))
+#define META_SURFACE_ACTOR_WAYLAND_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  META_TYPE_SURFACE_ACTOR_WAYLAND, MetaSurfaceActorWaylandClass))
+
+typedef struct _MetaSurfaceActorWayland      MetaSurfaceActorWayland;
+typedef struct _MetaSurfaceActorWaylandClass MetaSurfaceActorWaylandClass;
+
+struct _MetaSurfaceActorWayland
+{
+  MetaSurfaceActor parent;
+};
+
+struct _MetaSurfaceActorWaylandClass
+{
+  MetaSurfaceActorClass parent_class;
+};
+
+GType meta_surface_actor_wayland_get_type (void);
+
+MetaSurfaceActor * meta_surface_actor_wayland_new (MetaWaylandSurface *surface);
+MetaWaylandSurface * meta_surface_actor_wayland_get_surface (MetaSurfaceActorWayland *self);
+
+void meta_surface_actor_wayland_set_buffer (MetaSurfaceActorWayland *self,
+                                            MetaWaylandBuffer         *buffer);
+
+G_END_DECLS
+
+#endif /* __META_SURFACE_ACTOR_WAYLAND_H__ */
--- a/src/compositor/meta-surface-actor-x11.c
+++ b/src/compositor/meta-surface-actor-x11.c
@@ -0,0 +1,486 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/*
+ * Copyright (C) 2013 Red Hat
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written by:
+ *     Owen Taylor <otaylor@redhat.com>
+ *     Jasper St. Pierre <jstpierre@mecheye.net>
+ */
+
+#include "config.h"
+
+#include "meta-surface-actor-x11.h"
+
+#include <X11/extensions/Xcomposite.h>
+#include <X11/extensions/Xrender.h>
+#include <cogl/cogl-texture-pixmap-x11.h>
+
+#include <meta/errors.h>
+#include "window-private.h"
+#include "meta-shaped-texture-private.h"
+#include "meta-cullable.h"
+
+struct _MetaSurfaceActorX11Private
+{
+  MetaWindow *window;
+
+  MetaDisplay *display;
+
+  CoglTexture *texture;
+  Pixmap pixmap;
+  Damage damage;
+
+  int last_width;
+  int last_height;
+
+  /* This is used to detect fullscreen windows that need to be unredirected */
+  guint full_damage_frames_count;
+  guint does_full_damage  : 1;
+
+  /* Other state... */
+  guint argb32 : 1;
+  guint received_damage : 1;
+  guint size_changed : 1;
+
+  guint unredirected   : 1;
+};
+typedef struct _MetaSurfaceActorX11Private MetaSurfaceActorX11Private;
+
+G_DEFINE_TYPE_WITH_PRIVATE (MetaSurfaceActorX11, meta_surface_actor_x11, META_TYPE_SURFACE_ACTOR)
+
+static void
+free_damage (MetaSurfaceActorX11 *self)
+{
+  MetaSurfaceActorX11Private *priv = meta_surface_actor_x11_get_instance_private (self);
+  MetaDisplay *display = priv->display;
+  Display *xdisplay = meta_display_get_xdisplay (display);
+
+  if (priv->damage == None)
+    return;
+
+  meta_error_trap_push (display);
+  XDamageDestroy (xdisplay, priv->damage);
+  priv->damage = None;
+  meta_error_trap_pop (display);
+}
+
+static void
+detach_pixmap (MetaSurfaceActorX11 *self)
+{
+  MetaSurfaceActorX11Private *priv = meta_surface_actor_x11_get_instance_private (self);
+  MetaDisplay *display = priv->display;
+  Display *xdisplay = meta_display_get_xdisplay (display);
+  MetaShapedTexture *stex = meta_surface_actor_get_texture (META_SURFACE_ACTOR (self));
+
+  if (priv->pixmap == None)
+    return;
+
+  /* Get rid of all references to the pixmap before freeing it; it's unclear whether
+   * you are supposed to be able to free a GLXPixmap after freeing the underlying
+   * pixmap, but it certainly doesn't work with current DRI/Mesa
+   */
+  meta_shaped_texture_set_texture (stex, NULL);
+  cogl_flush ();
+
+  meta_error_trap_push (display);
+  XFreePixmap (xdisplay, priv->pixmap);
+  priv->pixmap = None;
+  meta_error_trap_pop (display);
+
+  cogl_object_unref (priv->texture);
+  priv->texture = NULL;
+}
+
+static void
+set_pixmap (MetaSurfaceActorX11 *self,
+            Pixmap               pixmap)
+{
+  MetaSurfaceActorX11Private *priv = meta_surface_actor_x11_get_instance_private (self);
+
+  CoglContext *ctx = clutter_backend_get_cogl_context (clutter_get_default_backend ());
+  MetaShapedTexture *stex = meta_surface_actor_get_texture (META_SURFACE_ACTOR (self));
+  CoglTexture *texture;
+
+  g_assert (priv->pixmap == None);
+  priv->pixmap = pixmap;
+
+  texture = COGL_TEXTURE (cogl_texture_pixmap_x11_new (ctx, priv->pixmap, FALSE, NULL));
+
+  if (G_UNLIKELY (!cogl_texture_pixmap_x11_is_using_tfp_extension (COGL_TEXTURE_PIXMAP_X11 (texture))))
+    g_warning ("NOTE: Not using GLX TFP!\n");
+
+  priv->texture = texture;
+  meta_shaped_texture_set_texture (stex, texture);
+}
+
+static void
+update_pixmap (MetaSurfaceActorX11 *self)
+{
+  MetaSurfaceActorX11Private *priv = meta_surface_actor_x11_get_instance_private (self);
+  MetaDisplay *display = priv->display;
+  Display *xdisplay = meta_display_get_xdisplay (display);
+
+  if (priv->size_changed)
+    {
+      detach_pixmap (self);
+      priv->size_changed = FALSE;
+    }
+
+  if (priv->pixmap == None)
+    {
+      Pixmap new_pixmap;
+      Window xwindow = meta_window_get_toplevel_xwindow (priv->window);
+
+      meta_error_trap_push (display);
+      new_pixmap = XCompositeNameWindowPixmap (xdisplay, xwindow);
+
+      if (meta_error_trap_pop_with_return (display) != Success)
+        {
+          /* Probably a BadMatch if the window isn't viewable; we could
+           * GrabServer/GetWindowAttributes/NameWindowPixmap/UngrabServer/Sync
+           * to avoid this, but there's no reason to take two round trips
+           * when one will do. (We need that Sync if we want to handle failures
+           * for any reason other than !viewable. That's unlikely, but maybe
+           * we'll BadAlloc or something.)
+           */
+          new_pixmap = None;
+        }
+
+      if (new_pixmap == None)
+        {
+          meta_verbose ("Unable to get named pixmap for %s\n",
+                        meta_window_get_description (priv->window));
+          return;
+        }
+
+      set_pixmap (self, new_pixmap);
+    }
+}
+
+static gboolean
+is_visible (MetaSurfaceActorX11 *self)
+{
+  MetaSurfaceActorX11Private *priv = meta_surface_actor_x11_get_instance_private (self);
+  return (priv->pixmap != None) && !priv->unredirected;
+}
+
+static void
+damage_area (MetaSurfaceActorX11 *self,
+             int x, int y, int width, int height)
+{
+  MetaSurfaceActorX11Private *priv = meta_surface_actor_x11_get_instance_private (self);
+
+  if (!is_visible (self))
+    return;
+
+  cogl_texture_pixmap_x11_update_area (priv->texture, x, y, width, height);
+  meta_surface_actor_update_area (META_SURFACE_ACTOR (self), x, y, width, height);
+}
+
+static void
+meta_surface_actor_x11_process_damage (MetaSurfaceActor *actor,
+                                       int x, int y, int width, int height)
+{
+  MetaSurfaceActorX11 *self = META_SURFACE_ACTOR_X11 (actor);
+  MetaSurfaceActorX11Private *priv = meta_surface_actor_x11_get_instance_private (self);
+
+  priv->received_damage = TRUE;
+
+  if (meta_window_is_fullscreen (priv->window) && !priv->unredirected && !priv->does_full_damage)
+    {
+      MetaRectangle window_rect;
+      meta_window_get_frame_rect (priv->window, &window_rect);
+
+      if (window_rect.x == x &&
+          window_rect.y == y &&
+          window_rect.width == width &&
+          window_rect.height == height)
+        priv->full_damage_frames_count++;
+      else
+        priv->full_damage_frames_count = 0;
+
+      if (priv->full_damage_frames_count >= 100)
+        priv->does_full_damage = TRUE;
+    }
+
+  /* Drop damage event for unredirected windows */
+  if (priv->unredirected)
+    return;
+
+  damage_area (self, x, y, width, height);
+}
+
+static void
+meta_surface_actor_x11_pre_paint (MetaSurfaceActor *actor)
+{
+  MetaSurfaceActorX11 *self = META_SURFACE_ACTOR_X11 (actor);
+  MetaSurfaceActorX11Private *priv = meta_surface_actor_x11_get_instance_private (self);
+  MetaDisplay *display = priv->display;
+  Display *xdisplay = meta_display_get_xdisplay (display);
+
+  if (priv->received_damage)
+    {
+      meta_error_trap_push (display);
+      XDamageSubtract (xdisplay, priv->damage, None, None);
+      meta_error_trap_pop (display);
+
+      /* We need to make sure that any X drawing that happens before the
+       * XDamageSubtract() above is visible to subsequent GL rendering;
+       * the only standardized way to do this is EXT_x11_sync_object,
+       * which isn't yet widely available. For now, we count on details
+       * of Xorg and the open source drivers, and hope for the best
+       * otherwise.
+       *
+       * Xorg and open source driver specifics:
+       *
+       * The X server makes sure to flush drawing to the kernel before
+       * sending out damage events, but since we use DamageReportBoundingBox
+       * there may be drawing between the last damage event and the
+       * XDamageSubtract() that needs to be flushed as well.
+       *
+       * Xorg always makes sure that drawing is flushed to the kernel
+       * before writing events or responses to the client, so any round trip
+       * request at this point is sufficient to flush the GLX buffers.
+       */
+      XSync (xdisplay, False);
+
+      priv->received_damage = FALSE;
+    }
+
+  update_pixmap (self);
+}
+
+static void
+update_is_argb32 (MetaSurfaceActorX11 *self)
+{
+  MetaSurfaceActorX11Private *priv = meta_surface_actor_x11_get_instance_private (self);
+  MetaDisplay *display = priv->display;
+  Display *xdisplay = meta_display_get_xdisplay (display);
+
+  XRenderPictFormat *format;
+  format = XRenderFindVisualFormat (xdisplay, priv->window->xvisual);
+
+  priv->argb32 = (format && format->type == PictTypeDirect && format->direct.alphaMask);
+}
+
+static gboolean
+meta_surface_actor_x11_is_argb32 (MetaSurfaceActor *actor)
+{
+  MetaSurfaceActorX11 *self = META_SURFACE_ACTOR_X11 (actor);
+  MetaSurfaceActorX11Private *priv = meta_surface_actor_x11_get_instance_private (self);
+
+  return priv->argb32;
+}
+
+static gboolean
+meta_surface_actor_x11_is_visible (MetaSurfaceActor *actor)
+{
+  MetaSurfaceActorX11 *self = META_SURFACE_ACTOR_X11 (actor);
+  return is_visible (self);
+}
+
+static gboolean
+meta_surface_actor_x11_should_unredirect (MetaSurfaceActor *actor)
+{
+  MetaSurfaceActorX11 *self = META_SURFACE_ACTOR_X11 (actor);
+  MetaSurfaceActorX11Private *priv = meta_surface_actor_x11_get_instance_private (self);
+
+  MetaWindow *window = priv->window;
+
+  if (meta_window_requested_dont_bypass_compositor (window))
+    return FALSE;
+
+  if (window->opacity != 0xFF)
+    return FALSE;
+
+  if (window->shape_region != NULL)
+    return FALSE;
+
+  if (priv->argb32 && !meta_window_requested_bypass_compositor (window))
+    return FALSE;
+
+  if (!meta_window_is_monitor_sized (window))
+    return FALSE;
+
+  if (meta_window_requested_bypass_compositor (window))
+    return TRUE;
+
+  if (meta_window_is_override_redirect (window))
+    return TRUE;
+
+  if (priv->does_full_damage)
+    return TRUE;
+
+  return FALSE;
+}
+
+static void
+sync_unredirected (MetaSurfaceActorX11 *self)
+{
+  MetaSurfaceActorX11Private *priv = meta_surface_actor_x11_get_instance_private (self);
+  MetaDisplay *display = priv->display;
+  Display *xdisplay = meta_display_get_xdisplay (display);
+  Window xwindow = meta_window_get_toplevel_xwindow (priv->window);
+
+  meta_error_trap_push (display);
+
+  if (priv->unredirected)
+    {
+      detach_pixmap (self);
+      XCompositeUnredirectWindow (xdisplay, xwindow, CompositeRedirectManual);
+    }
+  else
+    {
+      XCompositeRedirectWindow (xdisplay, xwindow, CompositeRedirectManual);
+    }
+
+  meta_error_trap_pop (display);
+}
+
+static void
+meta_surface_actor_x11_set_unredirected (MetaSurfaceActor *actor,
+                                         gboolean          unredirected)
+{
+  MetaSurfaceActorX11 *self = META_SURFACE_ACTOR_X11 (actor);
+  MetaSurfaceActorX11Private *priv = meta_surface_actor_x11_get_instance_private (self);
+
+  if (priv->unredirected == unredirected)
+    return;
+
+  priv->unredirected = unredirected;
+  sync_unredirected (self);
+}
+
+static gboolean
+meta_surface_actor_x11_is_unredirected (MetaSurfaceActor *actor)
+{
+  MetaSurfaceActorX11 *self = META_SURFACE_ACTOR_X11 (actor);
+  MetaSurfaceActorX11Private *priv = meta_surface_actor_x11_get_instance_private (self);
+
+  return priv->unredirected;
+}
+
+static void
+meta_surface_actor_x11_dispose (GObject *object)
+{
+  MetaSurfaceActorX11 *self = META_SURFACE_ACTOR_X11 (object);
+
+  detach_pixmap (self);
+  free_damage (self);
+
+  G_OBJECT_CLASS (meta_surface_actor_x11_parent_class)->dispose (object);
+}
+
+static MetaWindow *
+meta_surface_actor_x11_get_window (MetaSurfaceActor *actor)
+{
+  MetaSurfaceActorX11Private *priv = meta_surface_actor_x11_get_instance_private (META_SURFACE_ACTOR_X11 (actor));
+
+  return priv->window;
+}
+
+static void
+meta_surface_actor_x11_class_init (MetaSurfaceActorX11Class *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+  MetaSurfaceActorClass *surface_actor_class = META_SURFACE_ACTOR_CLASS (klass);
+
+  object_class->dispose = meta_surface_actor_x11_dispose;
+
+  surface_actor_class->process_damage = meta_surface_actor_x11_process_damage;
+  surface_actor_class->pre_paint = meta_surface_actor_x11_pre_paint;
+  surface_actor_class->is_argb32 = meta_surface_actor_x11_is_argb32;
+  surface_actor_class->is_visible = meta_surface_actor_x11_is_visible;
+
+  surface_actor_class->should_unredirect = meta_surface_actor_x11_should_unredirect;
+  surface_actor_class->set_unredirected = meta_surface_actor_x11_set_unredirected;
+  surface_actor_class->is_unredirected = meta_surface_actor_x11_is_unredirected;
+
+  surface_actor_class->get_window = meta_surface_actor_x11_get_window;
+}
+
+static void
+meta_surface_actor_x11_init (MetaSurfaceActorX11 *self)
+{
+  MetaSurfaceActorX11Private *priv = meta_surface_actor_x11_get_instance_private (self);
+
+  priv->last_width = -1;
+  priv->last_height = -1;
+}
+
+static void
+create_damage (MetaSurfaceActorX11 *self)
+{
+  MetaSurfaceActorX11Private *priv = meta_surface_actor_x11_get_instance_private (self);
+  Display *xdisplay = meta_display_get_xdisplay (priv->display);
+  Window xwindow = meta_window_get_toplevel_xwindow (priv->window);
+
+  priv->damage = XDamageCreate (xdisplay, xwindow, XDamageReportBoundingBox);
+}
+
+static void
+window_decorated_notify (MetaWindow *window,
+                         GParamSpec *pspec,
+                         gpointer    user_data)
+{
+  MetaSurfaceActorX11 *self = META_SURFACE_ACTOR_X11 (user_data);
+
+  free_damage (self);
+  create_damage (self);
+}
+
+MetaSurfaceActor *
+meta_surface_actor_x11_new (MetaWindow *window)
+{
+  MetaSurfaceActorX11 *self = g_object_new (META_TYPE_SURFACE_ACTOR_X11, NULL);
+  MetaSurfaceActorX11Private *priv = meta_surface_actor_x11_get_instance_private (self);
+  MetaDisplay *display = meta_window_get_display (window);
+
+  g_assert (!meta_is_wayland_compositor ());
+
+  priv->window = window;
+  priv->display = display;
+
+  create_damage (self);
+  g_signal_connect_object (priv->window, "notify::decorated",
+                           G_CALLBACK (window_decorated_notify), self, 0);
+
+  update_is_argb32 (self);
+
+  priv->unredirected = FALSE;
+  sync_unredirected (self);
+
+  clutter_actor_set_reactive (CLUTTER_ACTOR (self), TRUE);
+  return META_SURFACE_ACTOR (self);
+}
+
+void
+meta_surface_actor_x11_set_size (MetaSurfaceActorX11 *self,
+                                 int width, int height)
+{
+  MetaSurfaceActorX11Private *priv = meta_surface_actor_x11_get_instance_private (self);
+
+  if (priv->last_width == width &&
+      priv->last_height == height)
+    return;
+
+  priv->size_changed = TRUE;
+  priv->last_width = width;
+  priv->last_height = height;
+}
--- a/src/compositor/meta-surface-actor-x11.h
+++ b/src/compositor/meta-surface-actor-x11.h
@@ -0,0 +1,69 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/*
+ * Copyright (C) 2013 Red Hat
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written by:
+ *     Owen Taylor <otaylor@redhat.com>
+ *     Jasper St. Pierre <jstpierre@mecheye.net>
+ */
+
+#ifndef __META_SURFACE_ACTOR_X11_H__
+#define __META_SURFACE_ACTOR_X11_H__
+
+#include <glib-object.h>
+
+#include "meta-surface-actor.h"
+
+#include <X11/extensions/Xdamage.h>
+
+#include <meta/display.h>
+#include <meta/window.h>
+
+G_BEGIN_DECLS
+
+#define META_TYPE_SURFACE_ACTOR_X11            (meta_surface_actor_x11_get_type ())
+#define META_SURFACE_ACTOR_X11(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), META_TYPE_SURFACE_ACTOR_X11, MetaSurfaceActorX11))
+#define META_SURFACE_ACTOR_X11_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  META_TYPE_SURFACE_ACTOR_X11, MetaSurfaceActorX11Class))
+#define META_IS_SURFACE_ACTOR_X11(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), META_TYPE_SURFACE_ACTOR_X11))
+#define META_IS_SURFACE_ACTOR_X11_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  META_TYPE_SURFACE_ACTOR_X11))
+#define META_SURFACE_ACTOR_X11_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  META_TYPE_SURFACE_ACTOR_X11, MetaSurfaceActorX11Class))
+
+typedef struct _MetaSurfaceActorX11      MetaSurfaceActorX11;
+typedef struct _MetaSurfaceActorX11Class MetaSurfaceActorX11Class;
+
+struct _MetaSurfaceActorX11
+{
+  MetaSurfaceActor parent;
+};
+
+struct _MetaSurfaceActorX11Class
+{
+  MetaSurfaceActorClass parent_class;
+};
+
+GType meta_surface_actor_x11_get_type (void);
+
+MetaSurfaceActor * meta_surface_actor_x11_new (MetaWindow *window);
+
+void meta_surface_actor_x11_set_size (MetaSurfaceActorX11 *self,
+                                      int width, int height);
+
+G_END_DECLS
+
+#endif /* __META_SURFACE_ACTOR_X11_H__ */
--- a/src/compositor/meta-surface-actor.c
+++ b/src/compositor/meta-surface-actor.c
@@ -0,0 +1,319 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/**
+ * SECTION:meta-surface-actor
+ * @title: MetaSurfaceActor
+ * @short_description: An actor representing a surface in the scene graph
+ *
+ * A surface can be either a shaped texture, or a group of shaped texture,
+ * used to draw the content of a window.
+ */
+
+#include <config.h>
+
+#include "meta-surface-actor.h"
+
+#include <clutter/clutter.h>
+#include <meta/meta-shaped-texture.h>
+#include "meta-cullable.h"
+#include "meta-shaped-texture-private.h"
+
+struct _MetaSurfaceActorPrivate
+{
+  MetaShapedTexture *texture;
+
+  cairo_region_t *input_region;
+
+  /* Freeze/thaw accounting */
+  guint needs_damage_all : 1;
+  guint frozen : 1;
+};
+
+static void cullable_iface_init (MetaCullableInterface *iface);
+
+G_DEFINE_ABSTRACT_TYPE_WITH_CODE (MetaSurfaceActor, meta_surface_actor, CLUTTER_TYPE_ACTOR,
+                                  G_IMPLEMENT_INTERFACE (META_TYPE_CULLABLE, cullable_iface_init));
+
+enum {
+  REPAINT_SCHEDULED,
+
+  LAST_SIGNAL,
+};
+
+static guint signals[LAST_SIGNAL];
+
+gboolean
+meta_surface_actor_get_unobscured_bounds (MetaSurfaceActor      *self,
+                                          cairo_rectangle_int_t *unobscured_bounds)
+{
+  MetaSurfaceActorPrivate *priv = self->priv;
+  return meta_shaped_texture_get_unobscured_bounds (priv->texture, unobscured_bounds);
+}
+
+static void
+meta_surface_actor_pick (ClutterActor       *actor,
+                         const ClutterColor *color)
+{
+  MetaSurfaceActor *self = META_SURFACE_ACTOR (actor);
+  MetaSurfaceActorPrivate *priv = self->priv;
+
+  if (!clutter_actor_should_pick_paint (actor))
+    return;
+
+  /* If there is no region then use the regular pick */
+  if (priv->input_region == NULL)
+    CLUTTER_ACTOR_CLASS (meta_surface_actor_parent_class)->pick (actor, color);
+  else
+    {
+      int n_rects;
+      float *rectangles;
+      int i;
+      CoglPipeline *pipeline;
+      CoglContext *ctx;
+      CoglFramebuffer *fb;
+      CoglColor cogl_color;
+
+      n_rects = cairo_region_num_rectangles (priv->input_region);
+      rectangles = g_alloca (sizeof (float) * 4 * n_rects);
+
+      for (i = 0; i < n_rects; i++)
+        {
+          cairo_rectangle_int_t rect;
+          int pos = i * 4;
+
+          cairo_region_get_rectangle (priv->input_region, i, &rect);
+
+          rectangles[pos + 0] = rect.x;
+          rectangles[pos + 1] = rect.y;
+          rectangles[pos + 2] = rect.x + rect.width;
+          rectangles[pos + 3] = rect.y + rect.height;
+        }
+
+      ctx = clutter_backend_get_cogl_context (clutter_get_default_backend ());
+      fb = cogl_get_draw_framebuffer ();
+
+      cogl_color_init_from_4ub (&cogl_color, color->red, color->green, color->blue, color->alpha);
+
+      pipeline = cogl_pipeline_new (ctx);
+      cogl_pipeline_set_color (pipeline, &cogl_color);
+      cogl_framebuffer_draw_rectangles (fb, pipeline, rectangles, n_rects);
+      cogl_object_unref (pipeline);
+    }
+}
+
+static void
+meta_surface_actor_dispose (GObject *object)
+{
+  MetaSurfaceActor *self = META_SURFACE_ACTOR (object);
+  MetaSurfaceActorPrivate *priv = self->priv;
+
+  g_clear_pointer (&priv->input_region, cairo_region_destroy);
+
+  G_OBJECT_CLASS (meta_surface_actor_parent_class)->dispose (object);
+}
+
+static void
+meta_surface_actor_class_init (MetaSurfaceActorClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+  ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
+
+  object_class->dispose = meta_surface_actor_dispose;
+  actor_class->pick = meta_surface_actor_pick;
+
+  signals[REPAINT_SCHEDULED] = g_signal_new ("repaint-scheduled",
+                                             G_TYPE_FROM_CLASS (object_class),
+                                             G_SIGNAL_RUN_LAST,
+                                             0,
+                                             NULL, NULL, NULL,
+                                             G_TYPE_NONE, 0);
+
+  g_type_class_add_private (klass, sizeof (MetaSurfaceActorPrivate));
+}
+
+static void
+meta_surface_actor_cull_out (MetaCullable   *cullable,
+                             cairo_region_t *unobscured_region,
+                             cairo_region_t *clip_region)
+{
+  meta_cullable_cull_out_children (cullable, unobscured_region, clip_region);
+}
+
+static void
+meta_surface_actor_reset_culling (MetaCullable *cullable)
+{
+  meta_cullable_reset_culling_children (cullable);
+}
+
+static void
+cullable_iface_init (MetaCullableInterface *iface)
+{
+  iface->cull_out = meta_surface_actor_cull_out;
+  iface->reset_culling = meta_surface_actor_reset_culling;
+}
+
+static void
+meta_surface_actor_init (MetaSurfaceActor *self)
+{
+  MetaSurfaceActorPrivate *priv;
+
+  priv = self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
+                                                   META_TYPE_SURFACE_ACTOR,
+                                                   MetaSurfaceActorPrivate);
+
+  priv->texture = META_SHAPED_TEXTURE (meta_shaped_texture_new ());
+  clutter_actor_add_child (CLUTTER_ACTOR (self), CLUTTER_ACTOR (priv->texture));
+}
+
+cairo_surface_t *
+meta_surface_actor_get_image (MetaSurfaceActor      *self,
+                              cairo_rectangle_int_t *clip)
+{
+  return meta_shaped_texture_get_image (self->priv->texture, clip);
+}
+
+MetaShapedTexture *
+meta_surface_actor_get_texture (MetaSurfaceActor *self)
+{
+  return self->priv->texture;
+}
+
+void
+meta_surface_actor_update_area (MetaSurfaceActor *self,
+                                int x, int y, int width, int height)
+{
+  MetaSurfaceActorPrivate *priv = self->priv;
+
+  if (meta_shaped_texture_update_area (priv->texture, x, y, width, height))
+    g_signal_emit (self, signals[REPAINT_SCHEDULED], 0);
+}
+
+gboolean
+meta_surface_actor_is_obscured (MetaSurfaceActor *self)
+{
+  MetaSurfaceActorPrivate *priv = self->priv;
+  return meta_shaped_texture_is_obscured (priv->texture);
+}
+
+void
+meta_surface_actor_set_input_region (MetaSurfaceActor *self,
+                                     cairo_region_t   *region)
+{
+  MetaSurfaceActorPrivate *priv = self->priv;
+
+  if (priv->input_region)
+    cairo_region_destroy (priv->input_region);
+
+  if (region)
+    priv->input_region = cairo_region_reference (region);
+  else
+    priv->input_region = NULL;
+}
+
+void
+meta_surface_actor_set_opaque_region (MetaSurfaceActor *self,
+                                      cairo_region_t   *region)
+{
+  MetaSurfaceActorPrivate *priv = self->priv;
+  meta_shaped_texture_set_opaque_region (priv->texture, region);
+}
+
+static gboolean
+is_frozen (MetaSurfaceActor *self)
+{
+  MetaSurfaceActorPrivate *priv = self->priv;
+  return priv->frozen;
+}
+
+void
+meta_surface_actor_process_damage (MetaSurfaceActor *self,
+                                   int x, int y, int width, int height)
+{
+  MetaSurfaceActorPrivate *priv = self->priv;
+
+  if (is_frozen (self))
+    {
+      /* The window is frozen due to an effect in progress: we ignore damage
+       * here on the off chance that this will stop the corresponding
+       * texture_from_pixmap from being update.
+       *
+       * needs_damage_all tracks that some unknown damage happened while the
+       * window was frozen so that when the window becomes unfrozen we can
+       * issue a full window update to cover any lost damage.
+       *
+       * It should be noted that this is an unreliable mechanism since it's
+       * quite likely that drivers will aim to provide a zero-copy
+       * implementation of the texture_from_pixmap extension and in those cases
+       * any drawing done to the window is always immediately reflected in the
+       * texture regardless of damage event handling.
+       */
+      priv->needs_damage_all = TRUE;
+      return;
+    }
+
+  META_SURFACE_ACTOR_GET_CLASS (self)->process_damage (self, x, y, width, height);
+}
+
+void
+meta_surface_actor_pre_paint (MetaSurfaceActor *self)
+{
+  META_SURFACE_ACTOR_GET_CLASS (self)->pre_paint (self);
+}
+
+gboolean
+meta_surface_actor_is_argb32 (MetaSurfaceActor *self)
+{
+  return META_SURFACE_ACTOR_GET_CLASS (self)->is_argb32 (self);
+}
+
+gboolean
+meta_surface_actor_is_visible (MetaSurfaceActor *self)
+{
+  return META_SURFACE_ACTOR_GET_CLASS (self)->is_visible (self);
+}
+
+void
+meta_surface_actor_set_frozen (MetaSurfaceActor *self,
+                               gboolean          frozen)
+{
+  MetaSurfaceActorPrivate *priv = self->priv;
+
+  priv->frozen = frozen;
+
+  if (!frozen && priv->needs_damage_all)
+    {
+      /* Since we ignore damage events while a window is frozen for certain effects
+       * we may need to issue an update_area() covering the whole pixmap if we
+       * don't know what real damage has happened. */
+
+      meta_surface_actor_process_damage (self, 0, 0,
+                                         clutter_actor_get_width (CLUTTER_ACTOR (priv->texture)),
+                                         clutter_actor_get_height (CLUTTER_ACTOR (priv->texture)));
+      priv->needs_damage_all = FALSE;
+    }
+}
+
+gboolean
+meta_surface_actor_should_unredirect (MetaSurfaceActor *self)
+{
+  return META_SURFACE_ACTOR_GET_CLASS (self)->should_unredirect (self);
+}
+
+void
+meta_surface_actor_set_unredirected (MetaSurfaceActor *self,
+                                     gboolean          unredirected)
+{
+  META_SURFACE_ACTOR_GET_CLASS (self)->set_unredirected (self, unredirected);
+}
+
+gboolean
+meta_surface_actor_is_unredirected (MetaSurfaceActor *self)
+{
+  return META_SURFACE_ACTOR_GET_CLASS (self)->is_unredirected (self);
+}
+
+MetaWindow *
+meta_surface_actor_get_window (MetaSurfaceActor *self)
+{
+  return META_SURFACE_ACTOR_GET_CLASS (self)->get_window (self);
+}
--- a/src/compositor/meta-surface-actor.h
+++ b/src/compositor/meta-surface-actor.h
@@ -0,0 +1,86 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+#ifndef META_SURFACE_ACTOR_PRIVATE_H
+#define META_SURFACE_ACTOR_PRIVATE_H
+
+#include <config.h>
+
+#include <meta/meta-shaped-texture.h>
+#include <meta/window.h>
+
+G_BEGIN_DECLS
+
+#define META_TYPE_SURFACE_ACTOR            (meta_surface_actor_get_type())
+#define META_SURFACE_ACTOR(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), META_TYPE_SURFACE_ACTOR, MetaSurfaceActor))
+#define META_SURFACE_ACTOR_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), META_TYPE_SURFACE_ACTOR, MetaSurfaceActorClass))
+#define META_IS_SURFACE_ACTOR(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), META_TYPE_SURFACE_ACTOR))
+#define META_IS_SURFACE_ACTOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), META_TYPE_SURFACE_ACTOR))
+#define META_SURFACE_ACTOR_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), META_TYPE_SURFACE_ACTOR, MetaSurfaceActorClass))
+
+typedef struct _MetaSurfaceActor        MetaSurfaceActor;
+typedef struct _MetaSurfaceActorClass   MetaSurfaceActorClass;
+typedef struct _MetaSurfaceActorPrivate MetaSurfaceActorPrivate;
+
+struct _MetaSurfaceActorClass
+{
+  /*< private >*/
+  ClutterActorClass parent_class;
+
+  void     (* process_damage)    (MetaSurfaceActor *actor,
+                                  int x, int y, int width, int height);
+  void     (* pre_paint)         (MetaSurfaceActor *actor);
+  gboolean (* is_argb32)         (MetaSurfaceActor *actor);
+  gboolean (* is_visible)        (MetaSurfaceActor *actor);
+
+  gboolean (* should_unredirect) (MetaSurfaceActor *actor);
+  void     (* set_unredirected)  (MetaSurfaceActor *actor,
+                                  gboolean          unredirected);
+  gboolean (* is_unredirected)   (MetaSurfaceActor *actor);
+
+  MetaWindow *(* get_window)      (MetaSurfaceActor *actor);
+};
+
+struct _MetaSurfaceActor
+{
+  ClutterActor            parent;
+
+  MetaSurfaceActorPrivate *priv;
+};
+
+GType meta_surface_actor_get_type (void);
+
+cairo_surface_t *meta_surface_actor_get_image (MetaSurfaceActor      *self,
+                                               cairo_rectangle_int_t *clip);
+
+MetaShapedTexture *meta_surface_actor_get_texture (MetaSurfaceActor *self);
+MetaWindow        *meta_surface_actor_get_window  (MetaSurfaceActor *self);
+
+gboolean meta_surface_actor_is_obscured (MetaSurfaceActor *self);
+gboolean meta_surface_actor_get_unobscured_bounds (MetaSurfaceActor      *self,
+                                                   cairo_rectangle_int_t *unobscured_bounds);
+
+void meta_surface_actor_set_input_region (MetaSurfaceActor *self,
+                                          cairo_region_t   *region);
+void meta_surface_actor_set_opaque_region (MetaSurfaceActor *self,
+                                           cairo_region_t   *region);
+
+void meta_surface_actor_update_area (MetaSurfaceActor *actor,
+                                     int x, int y, int width, int height);
+
+void meta_surface_actor_process_damage (MetaSurfaceActor *actor,
+                                        int x, int y, int width, int height);
+void meta_surface_actor_pre_paint (MetaSurfaceActor *actor);
+gboolean meta_surface_actor_is_argb32 (MetaSurfaceActor *actor);
+gboolean meta_surface_actor_is_visible (MetaSurfaceActor *actor);
+
+void meta_surface_actor_set_frozen (MetaSurfaceActor *actor,
+                                    gboolean          frozen);
+
+gboolean meta_surface_actor_should_unredirect (MetaSurfaceActor *actor);
+void meta_surface_actor_set_unredirected (MetaSurfaceActor *actor,
+                                          gboolean          unredirected);
+gboolean meta_surface_actor_is_unredirected (MetaSurfaceActor *actor);
+
+G_END_DECLS
+
+#endif /* META_SURFACE_ACTOR_PRIVATE_H */
--- a/src/compositor/meta-texture-rectangle.c
+++ b/src/compositor/meta-texture-rectangle.c
@@ -18,9 +18,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #include <config.h>
@@ -28,41 +26,6 @@
 #include <clutter/clutter.h>
 #include "meta-texture-rectangle.h"

-CoglTexture *
-meta_texture_rectangle_new (unsigned int width,
-                            unsigned int height,
-                            CoglPixelFormat format,
-                            CoglPixelFormat internal_format,
-                            unsigned int rowstride,
-                            const guint8 *data,
-                            GError **error)
-{
-  ClutterBackend *backend =
-    clutter_get_default_backend ();
-  CoglContext *context =
-    clutter_backend_get_cogl_context (backend);
-  CoglTextureRectangle *tex_rect;
-
-  tex_rect = cogl_texture_rectangle_new_with_size (context,
-                                                   width, height,
-                                                   internal_format,
-                                                   error);
-  if (tex_rect == NULL)
-    return NULL;
-
-  if (data)
-    cogl_texture_set_region (COGL_TEXTURE (tex_rect),
-                             0, 0, /* src_x/y */
-                             0, 0, /* dst_x/y */
-                             width, height, /* dst_width/height */
-                             width, height, /* width/height */
-                             format,
-                             rowstride,
-                             data);
-
-  return COGL_TEXTURE (tex_rect);
-}
-
 static void
 texture_rectangle_check_cb (CoglTexture *sub_texture,
                            const float *sub_texture_coords,
--- a/src/compositor/meta-texture-rectangle.h
+++ b/src/compositor/meta-texture-rectangle.h
@@ -18,9 +18,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef __META_TEXTURE_RECTANGLE_H__
@@ -30,15 +28,6 @@

 G_BEGIN_DECLS

-CoglTexture *
-meta_texture_rectangle_new (unsigned int width,
-                            unsigned int height,
-                            CoglPixelFormat format,
-                            CoglPixelFormat internal_format,
-                            unsigned int rowstride,
-                            const guint8 *data,
-                            GError **error);
-
 gboolean
 meta_texture_rectangle_check (CoglTexture *texture);

--- a/src/compositor/meta-texture-tower.c
+++ b/src/compositor/meta-texture-tower.c
@@ -17,9 +17,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #include <math.h>
@@ -357,18 +355,10 @@ texture_tower_create_texture (MetaTextureTower *tower,
  if ((!is_power_of_two (width) || !is_power_of_two (height)) &&
      meta_texture_rectangle_check (tower->textures[level - 1]))
    {
-      tower->textures[level] =
-        meta_texture_rectangle_new (width, height,
-                                    /* data format */
-                                    TEXTURE_FORMAT,
-                                    /* internal cogl format */
-                                    TEXTURE_FORMAT,
-                                    /* rowstride */
-                                    width * 4,
-                                    /* data */
-                                    NULL,
-                                    /* error */
-                                    NULL);
+      ClutterBackend *backend = clutter_get_default_backend ();
+      CoglContext *context = clutter_backend_get_cogl_context (backend);
+
+      tower->textures[level] = cogl_texture_rectangle_new_with_size (context, width, height);
    }
  else
    {
--- a/src/compositor/meta-texture-tower.h
+++ b/src/compositor/meta-texture-tower.h
@@ -17,9 +17,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef __META_TEXTURE_TOWER_H__
--- a/src/compositor/meta-window-actor-private.h
+++ b/src/compositor/meta-window-actor-private.h
@@ -5,11 +5,9 @@

 #include <config.h>

-#include <wayland-server.h>
-#include <meta-wayland-private.h>
-
 #include <X11/extensions/Xdamage.h>
 #include <meta/compositor-mutter.h>
+#include "meta-surface-actor.h"

 MetaWindowActor *meta_window_actor_new (MetaWindow *window);

@@ -30,16 +28,6 @@ void meta_window_actor_unmaximize (MetaWindowActor *self,
 void meta_window_actor_process_x11_damage (MetaWindowActor    *self,
                                           XDamageNotifyEvent *event);

-void meta_window_actor_process_wayland_damage (MetaWindowActor *self,
-                                               int              x,
-                                               int              y,
-                                               int              width,
-                                               int              height);
-void meta_window_actor_set_wayland_surface    (MetaWindowActor    *self,
-                                               MetaWaylandSurface *surface);
-void meta_window_actor_attach_wayland_buffer  (MetaWindowActor   *self,
-                                               MetaWaylandBuffer *buffer);
-
 void meta_window_actor_pre_paint      (MetaWindowActor    *self);
 void meta_window_actor_post_paint     (MetaWindowActor    *self);
 void meta_window_actor_frame_complete (MetaWindowActor    *self,
@@ -48,13 +36,13 @@ void meta_window_actor_frame_complete (MetaWindowActor    *self,

 void meta_window_actor_invalidate_shadow (MetaWindowActor *self);

-void meta_window_actor_set_redirected (MetaWindowActor *self, gboolean state);
-
-gboolean meta_window_actor_should_unredirect (MetaWindowActor *self);
-
 void meta_window_actor_get_shape_bounds (MetaWindowActor       *self,
                                          cairo_rectangle_int_t *bounds);

+gboolean meta_window_actor_should_unredirect   (MetaWindowActor *self);
+void     meta_window_actor_set_unredirected    (MetaWindowActor *self,
+                                                gboolean         unredirected);
+
 gboolean meta_window_actor_effect_in_progress  (MetaWindowActor *self);
 void     meta_window_actor_sync_actor_geometry (MetaWindowActor *self,
                                                gboolean         did_placement);
@@ -68,18 +56,10 @@ void     meta_window_actor_set_updates_frozen  (MetaWindowActor *self,
 void     meta_window_actor_queue_frame_drawn   (MetaWindowActor *self,
                                                gboolean         no_delay_frame);

-cairo_region_t *meta_window_actor_get_obscured_region (MetaWindowActor *self);
-
-void meta_window_actor_set_clip_region         (MetaWindowActor *self,
-                                                cairo_region_t  *clip_region);
-void meta_window_actor_set_clip_region_beneath (MetaWindowActor *self,
-                                                cairo_region_t  *beneath_region);
-void meta_window_actor_reset_clip_regions      (MetaWindowActor *self);
-
-void meta_window_actor_set_unobscured_region      (MetaWindowActor *self,
-                                                   cairo_region_t  *unobscured_region);
-
 void meta_window_actor_effect_completed (MetaWindowActor *actor,
                                         gulong           event);

+MetaSurfaceActor *meta_window_actor_get_surface (MetaWindowActor *self);
+void meta_window_actor_update_surface (MetaWindowActor *self);
+
 #endif /* META_WINDOW_ACTOR_PRIVATE_H */
--- a/src/compositor/meta-window-actor.c
+++ b/src/compositor/meta-window-actor.c
--- a/src/compositor/meta-window-group.c
+++ b/src/compositor/meta-window-group.c
@@ -11,9 +11,8 @@
 #include "compositor-private.h"
 #include "meta-window-actor-private.h"
 #include "meta-window-group.h"
-#include "meta-background-actor-private.h"
-#include "meta-background-group-private.h"
 #include "window-private.h"
+#include "meta-cullable.h"

 struct _MetaWindowGroupClass
 {
@@ -27,7 +26,10 @@ struct _MetaWindowGroup
  MetaScreen *screen;
 };

-G_DEFINE_TYPE (MetaWindowGroup, meta_window_group, CLUTTER_TYPE_ACTOR);
+static void cullable_iface_init (MetaCullableInterface *iface);
+
+G_DEFINE_TYPE_WITH_CODE (MetaWindowGroup, meta_window_group, CLUTTER_TYPE_ACTOR,
+                         G_IMPLEMENT_INTERFACE (META_TYPE_CULLABLE, cullable_iface_init));

 /* Help macros to scale from OpenGL <-1,1> coordinates system to
 * window coordinates ranging [0,window-size]. Borrowed from clutter-utils.c
@@ -87,34 +89,40 @@ painting_untransformed (MetaWindowGroup *window_group,
  return meta_actor_vertices_are_untransformed (vertices, width, height, x_origin, y_origin);
 }

+static void
+meta_window_group_cull_out (MetaCullable   *cullable,
+                            cairo_region_t *unobscured_region,
+                            cairo_region_t *clip_region)
+{
+  meta_cullable_cull_out_children (cullable, unobscured_region, clip_region);
+}
+
+static void
+meta_window_group_reset_culling (MetaCullable *cullable)
+{
+  meta_cullable_reset_culling_children (cullable);
+}
+
+static void
+cullable_iface_init (MetaCullableInterface *iface)
+{
+  iface->cull_out = meta_window_group_cull_out;
+  iface->reset_culling = meta_window_group_reset_culling;
+}
+
 static void
 meta_window_group_paint (ClutterActor *actor)
 {
  cairo_region_t *clip_region;
  cairo_region_t *unobscured_region;
-  ClutterActorIter iter;
-  ClutterActor *child;
  cairo_rectangle_int_t visible_rect, clip_rect;
+  int paint_x_offset, paint_y_offset;
  int paint_x_origin, paint_y_origin;
  int actor_x_origin, actor_y_origin;
-  int paint_x_offset, paint_y_offset;

  MetaWindowGroup *window_group = META_WINDOW_GROUP (actor);
-  MetaCompScreen *info = meta_screen_get_compositor_data (window_group->screen);
  ClutterActor *stage = clutter_actor_get_stage (actor);

-  /* Start off by treating all windows as completely unobscured, so damage anywhere
-   * in a window queues redraws, but confine it more below. */
-  clutter_actor_iter_init (&iter, actor);
-  while (clutter_actor_iter_next (&iter, &child))
-    {
-      if (META_IS_WINDOW_ACTOR (child))
-        {
-          MetaWindowActor *window_actor = META_WINDOW_ACTOR (child);
-          meta_window_actor_set_unobscured_region (window_actor, NULL);
-        }
-    }
-
  /* Normally we expect an actor to be drawn at it's position on the screen.
   * However, if we're inside the paint of a ClutterClone, that won't be the
   * case and we need to compensate. We look at the position of the window
@@ -135,9 +143,6 @@ meta_window_group_paint (ClutterActor *actor)
      return;
    }

-  paint_x_offset = paint_x_origin - actor_x_origin;
-  paint_y_offset = paint_y_origin - actor_y_origin;
-
  visible_rect.x = visible_rect.y = 0;
  visible_rect.width = clutter_actor_get_width (CLUTTER_ACTOR (stage));
  visible_rect.height = clutter_actor_get_height (CLUTTER_ACTOR (stage));
@@ -155,138 +160,44 @@ meta_window_group_paint (ClutterActor *actor)

  clip_region = cairo_region_create_rectangle (&clip_rect);

-  if (!meta_is_wayland_compositor ())
-    {
-      info = meta_screen_get_compositor_data (window_group->screen);
-      if (info->unredirected_window != NULL)
-        {
-          cairo_rectangle_int_t unredirected_rect;
-          MetaWindow *window = meta_window_actor_get_meta_window (info->unredirected_window);
+  paint_x_offset = paint_x_origin - actor_x_origin;
+  paint_y_offset = paint_y_origin - actor_y_origin;
+  cairo_region_translate (clip_region, -paint_x_offset, -paint_y_offset);

-          meta_window_get_outer_rect (window, (MetaRectangle *)&unredirected_rect);
-          cairo_region_subtract_rectangle (unobscured_region, &unredirected_rect);
-          cairo_region_subtract_rectangle (clip_region, &unredirected_rect);
-        }
-    }
-
-  /* We walk the list from top to bottom (opposite of painting order),
-   * and subtract the opaque area of each window out of the visible
-   * region that we pass to the windows below.
-   */
-  clutter_actor_iter_init (&iter, actor);
-  while (clutter_actor_iter_prev (&iter, &child))
-    {
-      if (!CLUTTER_ACTOR_IS_VISIBLE (child))
-        continue;
-
-      if (!meta_is_wayland_compositor () &&
-          info->unredirected_window != NULL &&
-          child == CLUTTER_ACTOR (info->unredirected_window))
-        continue;
-
-      /* If an actor has effects applied, then that can change the area
-       * it paints and the opacity, so we no longer can figure out what
-       * portion of the actor is obscured and what portion of the screen
-       * it obscures, so we skip the actor.
-       *
-       * This has a secondary beneficial effect: if a ClutterOffscreenEffect
-       * is applied to an actor, then our clipped redraws interfere with the
-       * caching of the FBO - even if we only need to draw a small portion
-       * of the window right now, ClutterOffscreenEffect may use other portions
-       * of the FBO later. So, skipping actors with effects applied also
-       * prevents these bugs.
-       *
-       * Theoretically, we should check clutter_actor_get_offscreen_redirect()
-       * as well for the same reason, but omitted for simplicity in the
-       * hopes that no-one will do that.
-       */
-      if (clutter_actor_has_effects (child))
-        continue;
-
-      if (META_IS_WINDOW_ACTOR (child))
-        {
-          MetaWindowActor *window_actor = META_WINDOW_ACTOR (child);
-          int x, y;
-
-          if (!meta_actor_is_untransformed (CLUTTER_ACTOR (window_actor), &x, &y))
-            continue;
-
-          x += paint_x_offset;
-          y += paint_y_offset;
-
-
-          /* Temporarily move to the coordinate system of the actor */
-          cairo_region_translate (unobscured_region, - x, - y);
-          cairo_region_translate (clip_region, - x, - y);
-
-          meta_window_actor_set_unobscured_region (window_actor, unobscured_region);
-          meta_window_actor_set_clip_region (window_actor, clip_region);
-
-          if (clutter_actor_get_paint_opacity (CLUTTER_ACTOR (window_actor)) == 0xff)
-            {
-              cairo_region_t *obscured_region = meta_window_actor_get_obscured_region (window_actor);
-              if (obscured_region)
-                {
-                  cairo_region_subtract (unobscured_region, obscured_region);
-                  cairo_region_subtract (clip_region, obscured_region);
-                }
-            }
-
-          meta_window_actor_set_clip_region_beneath (window_actor, clip_region);
-
-          cairo_region_translate (unobscured_region, x, y);
-          cairo_region_translate (clip_region, x, y);
-        }
-      else if (META_IS_BACKGROUND_ACTOR (child) ||
-               META_IS_BACKGROUND_GROUP (child))
-        {
-          int x, y;
-
-          if (!meta_actor_is_untransformed (child, &x, &y))
-            continue;
-
-          x += paint_x_offset;
-          y += paint_y_offset;
-
-          cairo_region_translate (clip_region, - x, - y);
-
-          if (META_IS_BACKGROUND_GROUP (child))
-            meta_background_group_set_clip_region (META_BACKGROUND_GROUP (child), clip_region);
-          else
-            meta_background_actor_set_clip_region (META_BACKGROUND_ACTOR (child), clip_region);
-          cairo_region_translate (clip_region, x, y);
-        }
-    }
+  meta_cullable_cull_out (META_CULLABLE (window_group), unobscured_region, clip_region);

  cairo_region_destroy (unobscured_region);
  cairo_region_destroy (clip_region);

  CLUTTER_ACTOR_CLASS (meta_window_group_parent_class)->paint (actor);

-  /* Now that we are done painting, unset the visible regions (they will
-   * mess up painting clones of our actors)
-   */
-  clutter_actor_iter_init (&iter, actor);
-  while (clutter_actor_iter_next (&iter, &child))
-    {
-      if (META_IS_WINDOW_ACTOR (child))
-        {
-          MetaWindowActor *window_actor = META_WINDOW_ACTOR (child);
-          meta_window_actor_reset_clip_regions (window_actor);
-        }
-      else if (META_IS_BACKGROUND_ACTOR (child))
-        {
-          MetaBackgroundActor *background_actor = META_BACKGROUND_ACTOR (child);
-          meta_background_actor_set_clip_region (background_actor, NULL);
-        }
-    }
+  meta_cullable_reset_culling (META_CULLABLE (window_group));
 }

+/* Adapted from clutter_actor_update_default_paint_volume() */
 static gboolean
-meta_window_group_get_paint_volume (ClutterActor       *actor,
+meta_window_group_get_paint_volume (ClutterActor       *self,
                                    ClutterPaintVolume *volume)
 {
-  return clutter_paint_volume_set_from_allocation (volume, actor);
+  ClutterActorIter iter;
+  ClutterActor *child;
+
+  clutter_actor_iter_init (&iter, self);
+  while (clutter_actor_iter_next (&iter, &child))
+    {
+      const ClutterPaintVolume *child_volume;
+
+      if (!CLUTTER_ACTOR_IS_MAPPED (child))
+        continue;
+
+      child_volume = clutter_actor_get_transformed_paint_volume (child, self);
+      if (child_volume == NULL)
+        return FALSE;
+
+      clutter_paint_volume_union (volume, child_volume);
+    }
+
+  return TRUE;
 }

 static void
--- a/src/compositor/meta-window-group.h
+++ b/src/compositor/meta-window-group.h
@@ -11,29 +11,9 @@
 * MetaWindowGroup:
 *
 * This class is a subclass of ClutterActor with special handling for
- * MetaWindowActor/MetaBackgroundActor/MetaBackgroundGroup when painting
- * children.
- *
- * When we are painting a stack of 5-10 maximized windows, the
- * standard bottom-to-top method of drawing every actor results in a
- * tremendous amount of overdraw and can easily max out the available
- * memory bandwidth on a low-end graphics chipset. It's even worse if
- * window textures are being accessed over the AGP bus.
- *
- * The basic technique applied here is to do a pre-pass before painting
- * where we walk window from top to bottom and compute the visible area
- * at each step by subtracting out the windows above it. The visible
- * area is passed to MetaWindowActor which uses it to clip the portion of
- * the window which drawn and avoid redrawing the shadow if it is completely
- * obscured.
- *
- * A caveat is that this is ineffective if applications are using ARGB
- * visuals, since we have no way of knowing whether a window obscures
- * the windows behind it or not. Alternate approaches using the depth
- * or stencil buffer rather than client side regions might be able to
- * handle alpha windows, but the combination of glAlphaFunc and stenciling
- * tends not to be efficient except on newer cards. (And on newer cards
- * we have lots of memory and bandwidth.)
+ * #MetaCullable when painting children. It uses code similar to
+ * meta_cullable_cull_out_children(), but also has additional special
+ * cases for the undirected window, and similar.
 */

 #define META_TYPE_WINDOW_GROUP            (meta_window_group_get_type ())
--- a/src/compositor/meta-window-shape.c
+++ b/src/compositor/meta-window-shape.c
@@ -17,9 +17,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */
 #include <string.h>

--- a/src/compositor/meta-window-shape.h
+++ b/src/compositor/meta-window-shape.h
@@ -17,9 +17,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef __META_WINDOW_SHAPE_H__
--- a/src/compositor/plugins/default.c
+++ b/src/compositor/plugins/default.c
@@ -16,9 +16,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #include <config.h>
@@ -34,13 +32,14 @@
 #include <gmodule.h>
 #include <string.h>

-#define DESTROY_TIMEOUT   250
+#define DESTROY_TIMEOUT   100
 #define MINIMIZE_TIMEOUT  250
 #define MAXIMIZE_TIMEOUT  250
 #define MAP_TIMEOUT       250
 #define SWITCH_TIMEOUT    500

 #define ACTOR_DATA_KEY "MCCP-Default-actor-data"
+#define SCREEN_TILE_PREVIEW_DATA_KEY "MCCP-Default-screen-tile-preview-data"

 #define META_TYPE_DEFAULT_PLUGIN            (meta_default_plugin_get_type ())
 #define META_DEFAULT_PLUGIN(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), META_TYPE_DEFAULT_PLUGIN, MetaDefaultPlugin))
@@ -69,6 +68,7 @@ struct _MetaDefaultPluginClass
 };

 static GQuark actor_data_quark = 0;
+static GQuark screen_tile_preview_data_quark = 0;

 static void start      (MetaPlugin      *plugin);
 static void minimize   (MetaPlugin      *plugin,
@@ -99,6 +99,12 @@ static void kill_window_effects   (MetaPlugin      *plugin,
                                   MetaWindowActor *actor);
 static void kill_switch_workspace (MetaPlugin      *plugin);

+static void show_tile_preview (MetaPlugin      *plugin,
+                               MetaWindow      *window,
+                               MetaRectangle   *tile_rect,
+                               int              tile_monitor_number);
+static void hide_tile_preview (MetaPlugin      *plugin);
+
 static void confirm_display_change (MetaPlugin *plugin);

 static const MetaPluginInfo * plugin_info (MetaPlugin *plugin);
@@ -145,6 +151,15 @@ typedef struct
 } EffectCompleteData;


+typedef struct _ScreenTilePreview
+{
+  ClutterActor   *actor;
+
+  GdkRGBA        *preview_color;
+
+  MetaRectangle   tile_rect;
+} ScreenTilePreview;
+
 static void
 meta_default_plugin_dispose (GObject *object)
 {
@@ -205,6 +220,8 @@ meta_default_plugin_class_init (MetaDefaultPluginClass *klass)
  plugin_class->unmaximize       = unmaximize;
  plugin_class->destroy          = destroy;
  plugin_class->switch_workspace = switch_workspace;
+  plugin_class->show_tile_preview = show_tile_preview;
+  plugin_class->hide_tile_preview = hide_tile_preview;
  plugin_class->plugin_info      = plugin_info;
  plugin_class->kill_window_effects   = kill_window_effects;
  plugin_class->kill_switch_workspace = kill_switch_workspace;
@@ -291,26 +308,13 @@ on_switch_workspace_effect_complete (ClutterTimeline *timeline, gpointer data)
  meta_plugin_switch_workspace_completed (plugin);
 }

-static gboolean
-show_stage (MetaPlugin *plugin)
-{
-  MetaScreen *screen;
-  ClutterActor *stage;
-
-  screen = meta_plugin_get_screen (plugin);
-  stage = meta_get_stage_for_screen (screen);
-
-  clutter_actor_show (stage);
-
-  return FALSE;
-}
-
 static void
 on_monitors_changed (MetaScreen *screen,
                     MetaPlugin *plugin)
 {
  MetaDefaultPlugin *self = META_DEFAULT_PLUGIN (plugin);
  int i, n;
+  GRand *rand = g_rand_new_with_seed (12345);

  clutter_actor_destroy_all_children (self->priv->background_group);

@@ -333,14 +337,16 @@ on_monitors_changed (MetaScreen *screen,
         reproducible.
      */
      clutter_color_init (&color,
-                          g_random_int () % 255,
-                          g_random_int () % 255,
-                          g_random_int () % 255,
+                          g_rand_int_range (rand, 0, 255),
+                          g_rand_int_range (rand, 0, 255),
+                          g_rand_int_range (rand, 0, 255),
                          255);
      clutter_actor_set_background_color (background, &color);

      clutter_actor_add_child (self->priv->background_group, background);
    }
+
+  g_rand_free (rand);
 }

 static void
@@ -357,10 +363,7 @@ start (MetaPlugin *plugin)
                    G_CALLBACK (on_monitors_changed), plugin);
  on_monitors_changed (screen, plugin);

-  meta_later_add (META_LATER_BEFORE_REDRAW,
-                  (GSourceFunc) show_stage,
-                  plugin,
-                  NULL);
+  clutter_actor_show (meta_get_stage_for_screen (screen));
 }

 static void
@@ -409,9 +412,11 @@ switch_workspace (MetaPlugin *plugin,
      MetaWindowActor *window_actor = l->data;
      ActorPrivate    *apriv	    = get_actor_private (window_actor);
      ClutterActor    *actor	    = CLUTTER_ACTOR (window_actor);
+      MetaWorkspace   *workspace;
      gint             win_workspace;

-      win_workspace = meta_window_actor_get_workspace (window_actor);
+      workspace = meta_window_get_workspace (meta_window_actor_get_meta_window (window_actor));
+      win_workspace = meta_workspace_index (workspace);

      if (win_workspace == to || win_workspace == from)
        {
@@ -483,8 +488,6 @@ on_minimize_effect_complete (ClutterTimeline *timeline, EffectCompleteData *data
  /* FIXME - we shouldn't assume the original scale, it should be saved
   * at the start of the effect */
  clutter_actor_set_scale (data->actor, 1.0, 1.0);
-  clutter_actor_move_anchor_point_from_gravity (data->actor,
-                                                CLUTTER_GRAVITY_NORTH_WEST);

  /* Now notify the manager that we are done with this effect */
  meta_plugin_minimize_completed (plugin, window_actor);
@@ -521,9 +524,6 @@ minimize (MetaPlugin *plugin, MetaWindowActor *window_actor)

      apriv->is_minimized = TRUE;

-      clutter_actor_move_anchor_point_from_gravity (actor,
-                                                    CLUTTER_GRAVITY_CENTER);
-
      animation = clutter_actor_animate (actor,
                                         CLUTTER_EASE_IN_SINE,
                                         MINIMIZE_TIMEOUT,
@@ -562,8 +562,6 @@ on_maximize_effect_complete (ClutterTimeline *timeline, EffectCompleteData *data

  /* FIXME - don't assume the original scale was 1.0 */
  clutter_actor_set_scale (data->actor, 1.0, 1.0);
-  clutter_actor_move_anchor_point_from_gravity (data->actor,
-                                                CLUTTER_GRAVITY_NORTH_WEST);

  /* Now notify the manager that we are done with this effect */
  meta_plugin_maximize_completed (plugin, window_actor);
@@ -588,10 +586,8 @@ maximize (MetaPlugin *plugin,
  ClutterActor *actor = CLUTTER_ACTOR (window_actor);
  MetaWindow *meta_window = meta_window_actor_get_meta_window (window_actor);

-  gdouble  scale_x    = 1.0;
-  gdouble  scale_y    = 1.0;
-  gfloat   anchor_x   = 0;
-  gfloat   anchor_y   = 0;
+  gdouble  scale_x = 1.0;
+  gdouble  scale_y = 1.0;

  type = meta_window_get_window_type (meta_window);

@@ -615,13 +611,6 @@ maximize (MetaPlugin *plugin,
      scale_x = (gdouble)end_width / (gdouble) width;
      scale_y = (gdouble)end_height / (gdouble) height;

-      anchor_x = (gdouble)(x - end_x)*(gdouble)width /
-        ((gdouble)(end_width - width));
-      anchor_y = (gdouble)(y - end_y)*(gdouble)height /
-        ((gdouble)(end_height - height));
-
-      clutter_actor_move_anchor_point (actor, anchor_x, anchor_y);
-
      animation = clutter_actor_animate (actor,
                                         CLUTTER_EASE_IN_SINE,
                                         MAXIMIZE_TIMEOUT,
@@ -676,9 +665,6 @@ on_map_effect_complete (ClutterTimeline *timeline, EffectCompleteData *data)

  apriv->tml_map = NULL;

-  clutter_actor_move_anchor_point_from_gravity (data->actor,
-                                                CLUTTER_GRAVITY_NORTH_WEST);
-
  /* Now notify the manager that we are done with this effect */
  meta_plugin_map_completed (plugin, window_actor);

@@ -704,15 +690,15 @@ map (MetaPlugin *plugin, MetaWindowActor *window_actor)
      EffectCompleteData *data = g_new0 (EffectCompleteData, 1);
      ActorPrivate *apriv = get_actor_private (window_actor);

-      clutter_actor_move_anchor_point_from_gravity (actor,
-                                                    CLUTTER_GRAVITY_CENTER);
-
-      clutter_actor_set_scale (actor, 0.0, 0.0);
+      clutter_actor_set_pivot_point (actor, 0.5, 0.5);
+      clutter_actor_set_opacity (actor, 0);
+      clutter_actor_set_scale (actor, 0.5, 0.5);
      clutter_actor_show (actor);

      animation = clutter_actor_animate (actor,
-                                         CLUTTER_EASE_IN_SINE,
+                                         CLUTTER_EASE_OUT_QUAD,
                                         MAP_TIMEOUT,
+                                         "opacity", 255,
                                         "scale-x", 1.0,
                                         "scale-y", 1.0,
                                         NULL);
@@ -764,14 +750,12 @@ destroy (MetaPlugin *plugin, MetaWindowActor *window_actor)
      EffectCompleteData *data = g_new0 (EffectCompleteData, 1);
      ActorPrivate *apriv = get_actor_private (window_actor);

-      clutter_actor_move_anchor_point_from_gravity (actor,
-                                                    CLUTTER_GRAVITY_CENTER);
-
      animation = clutter_actor_animate (actor,
-                                         CLUTTER_EASE_IN_SINE,
+                                         CLUTTER_EASE_OUT_QUAD,
                                         DESTROY_TIMEOUT,
-                                         "scale-x", 0.0,
-                                         "scale-y", 1.0,
+                                         "opacity", 0,
+                                         "scale-x", 0.8,
+                                         "scale-y", 0.8,
                                         NULL);
      apriv->tml_destroy = clutter_animation_get_timeline (animation);
      data->plugin = plugin;
@@ -784,6 +768,82 @@ destroy (MetaPlugin *plugin, MetaWindowActor *window_actor)
    meta_plugin_destroy_completed (plugin, window_actor);
 }

+/*
+ * Tile preview private data accessor
+ */
+static void
+free_screen_tile_preview (gpointer data)
+{
+  ScreenTilePreview *preview = data;
+
+  if (G_LIKELY (preview != NULL)) {
+    clutter_actor_destroy (preview->actor);
+    g_slice_free (ScreenTilePreview, preview);
+  }
+}
+
+static ScreenTilePreview *
+get_screen_tile_preview (MetaScreen *screen)
+{
+  ScreenTilePreview *preview = g_object_get_qdata (G_OBJECT (screen), screen_tile_preview_data_quark);
+
+  if (G_UNLIKELY (screen_tile_preview_data_quark == 0))
+    screen_tile_preview_data_quark = g_quark_from_static_string (SCREEN_TILE_PREVIEW_DATA_KEY);
+
+  if (G_UNLIKELY (!preview))
+    {
+      preview = g_slice_new0 (ScreenTilePreview);
+
+      preview->actor = clutter_actor_new ();
+      clutter_actor_set_background_color (preview->actor, CLUTTER_COLOR_Blue);
+      clutter_actor_set_opacity (preview->actor, 100);
+
+      clutter_actor_add_child (meta_get_window_group_for_screen (screen), preview->actor);
+      g_object_set_qdata_full (G_OBJECT (screen),
+                               screen_tile_preview_data_quark, preview,
+                               free_screen_tile_preview);
+    }
+
+  return preview;
+}
+
+static void
+show_tile_preview (MetaPlugin    *plugin,
+                   MetaWindow    *window,
+                   MetaRectangle *tile_rect,
+                   int            tile_monitor_number)
+{
+  MetaScreen *screen = meta_plugin_get_screen (plugin);
+  ScreenTilePreview *preview = get_screen_tile_preview (screen);
+  ClutterActor *window_actor;
+
+  if (CLUTTER_ACTOR_IS_VISIBLE (preview->actor)
+      && preview->tile_rect.x == tile_rect->x
+      && preview->tile_rect.y == tile_rect->y
+      && preview->tile_rect.width == tile_rect->width
+      && preview->tile_rect.height == tile_rect->height)
+    return; /* nothing to do */
+
+  clutter_actor_set_position (preview->actor, tile_rect->x, tile_rect->y);
+  clutter_actor_set_size (preview->actor, tile_rect->width, tile_rect->height);
+
+  clutter_actor_show (preview->actor);
+
+  window_actor = CLUTTER_ACTOR (meta_window_get_compositor_private (window));
+  clutter_actor_lower (preview->actor, window_actor);
+
+  preview->tile_rect = *tile_rect;
+}
+
+static void
+hide_tile_preview (MetaPlugin *plugin)
+{
+  MetaScreen *screen = meta_plugin_get_screen (plugin);
+  ScreenTilePreview *preview = get_screen_tile_preview (screen);
+
+  clutter_actor_hide (preview->actor);
+}
+
 static void
 kill_switch_workspace (MetaPlugin     *plugin)
 {
--- a/src/compositor/region-utils.c
+++ b/src/compositor/region-utils.c
@@ -15,9 +15,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #include "region-utils.h"
--- a/src/compositor/region-utils.h
+++ b/src/compositor/region-utils.h
@@ -15,9 +15,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef __META_REGION_UTILS_H__
--- a/src/core/above-tab-keycode.c
+++ b/src/core/above-tab-keycode.c
@@ -15,9 +15,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 /* The standard cycle-windows keybinding should be the key above the
--- a/src/core/barrier.c
+++ b/src/core/barrier.c
@@ -366,11 +366,25 @@ meta_barrier_fire_event (MetaBarrier    *barrier,
 }

 gboolean
-meta_display_process_barrier_event (MetaDisplay    *display,
-                                    XIBarrierEvent *xev)
+meta_display_process_barrier_event (MetaDisplay *display,
+                                    XIEvent     *event)
 {
  MetaBarrier *barrier;
+  XIBarrierEvent *xev;

+  if (event == NULL)
+    return FALSE;
+
+  switch (event->evtype)
+    {
+    case XI_BarrierHit:
+    case XI_BarrierLeave:
+      break;
+    default:
+      return FALSE;
+    }
+
+  xev = (XIBarrierEvent *) event;
  barrier = g_hash_table_lookup (display->xids, &xev->barrier);
  if (barrier != NULL)
    {
--- a/src/core/bell.c
+++ b/src/core/bell.c
@@ -17,9 +17,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 /*
--- a/src/core/bell.h
+++ b/src/core/bell.h
@@ -14,9 +14,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #include <X11/Xlib.h>
--- a/src/core/boxes-private.h
+++ b/src/core/boxes-private.h
@@ -16,9 +16,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef META_BOXES_PRIVATE_H
--- a/src/core/boxes.c
+++ b/src/core/boxes.c
@@ -25,9 +25,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #include "boxes-private.h"
--- a/src/core/constraints.c
+++ b/src/core/constraints.c
@@ -18,9 +18,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #include <config.h>
@@ -118,8 +116,6 @@ typedef struct
 {
  MetaRectangle        orig;
  MetaRectangle        current;
-  MetaFrameBorders    *borders;
-  gboolean             must_free_borders;
  ActionType           action_type;
  gboolean             is_user_action;

@@ -195,7 +191,6 @@ static gboolean constrain_partially_onscreen (MetaWindow         *window,

 static void setup_constraint_info        (ConstraintInfo      *info,
                                          MetaWindow          *window,
-                                          MetaFrameBorders    *orig_borders,
                                          MetaMoveResizeFlags  flags,
                                          int                  resize_gravity,
                                          const MetaRectangle *orig,
@@ -204,13 +199,12 @@ static void place_window_if_needed       (MetaWindow     *window,
                                          ConstraintInfo *info);
 static void update_onscreen_requirements (MetaWindow     *window,
                                          ConstraintInfo *info);
-static void extend_by_frame              (MetaRectangle           *rect,
-                                          const MetaFrameBorders  *borders);
-static void unextend_by_frame            (MetaRectangle           *rect,
-                                          const MetaFrameBorders  *borders);
-static inline void get_size_limits       (const MetaWindow        *window,
-                                          const MetaFrameBorders  *borders,
-                                          gboolean include_frame,
+static void extend_by_frame              (MetaWindow     *window,
+                                          MetaRectangle  *rect);
+static void unextend_by_frame            (MetaWindow     *window,
+                                          MetaRectangle  *rect);
+static inline void get_size_limits       (MetaWindow    *window,
+                                          gboolean       include_frame,
                                          MetaRectangle *min_size,
                                          MetaRectangle *max_size);

@@ -280,7 +274,6 @@ do_all_constraints (MetaWindow         *window,

 void
 meta_window_constrain (MetaWindow          *window,
-                       MetaFrameBorders    *orig_borders,
                       MetaMoveResizeFlags  flags,
                       int                  resize_gravity,
                       const MetaRectangle *orig,
@@ -303,7 +296,6 @@ meta_window_constrain (MetaWindow          *window,

  setup_constraint_info (&info,
                         window, 
-                         orig_borders,
                         flags,
                         resize_gravity,
                         orig,
@@ -333,19 +325,11 @@ meta_window_constrain (MetaWindow          *window,
   * if this was a user move or user move-and-resize operation.
   */
  update_onscreen_requirements (window, &info);
-
-  /* Ew, what an ugly way to do things.  Destructors (in a real OOP language,
-   * not gobject-style--gobject would be more pain than it's worth) or
-   * smart pointers would be so much nicer here.  *shrug*
-   */
-  if (info.must_free_borders)
-    g_free (info.borders);
 }

 static void
 setup_constraint_info (ConstraintInfo      *info,
                       MetaWindow          *window,
-                       MetaFrameBorders    *orig_borders,
                       MetaMoveResizeFlags  flags,
                       int                  resize_gravity,
                       const MetaRectangle *orig,
@@ -357,18 +341,6 @@ setup_constraint_info (ConstraintInfo      *info,
  info->orig    = *orig;
  info->current = *new;

-  /* Create a fake frame geometry if none really exists */
-  if (orig_borders && !window->fullscreen)
-    {
-      info->borders = orig_borders;
-      info->must_free_borders = FALSE;
-    }
-  else
-    {
-      info->borders = g_new0 (MetaFrameBorders, 1);
-      info->must_free_borders = TRUE;
-    }
-
  if (flags & META_IS_MOVE_ACTION && flags & META_IS_RESIZE_ACTION)
    info->action_type = ACTION_MOVE_AND_RESIZE;
  else if (flags & META_IS_RESIZE_ACTION)
@@ -447,12 +419,14 @@ setup_constraint_info (ConstraintInfo      *info,

  /* Workaround braindead legacy apps that don't know how to
   * fullscreen themselves properly - don't get fooled by
-   * windows which hide their titlebar when maximized; that's
-   * not the same as fullscreen, even if there are no struts
-   * making the workarea smaller than the monitor.
+   * windows which hide their titlebar when maximized or which are
+   * client decorated; that's not the same as fullscreen, even
+   * if there are no struts making the workarea smaller than
+   * the monitor.
   */
  if (meta_prefs_get_force_fullscreen() &&
      !window->hide_titlebar_when_maximized &&
+      window->decorated &&
      meta_rectangle_equal (new, &monitor_info->rect) &&
      window->has_fullscreen_func &&
      !window->fullscreen)
@@ -517,11 +491,12 @@ place_window_if_needed(MetaWindow     *window,
      !window->minimized &&
      !window->fullscreen)
    {
-      MetaRectangle placed_rect = info->orig;
+      MetaRectangle placed_rect;
      MetaWorkspace *cur_workspace;
      const MetaMonitorInfo *monitor_info;

-      meta_window_place (window, info->borders, info->orig.x, info->orig.y,
+      meta_window_get_frame_rect (window, &placed_rect);
+      meta_window_place (window, info->orig.x, info->orig.y,
                         &placed_rect.x, &placed_rect.y);
      did_placement = TRUE;

@@ -539,6 +514,7 @@ place_window_if_needed(MetaWindow     *window,
        meta_workspace_get_onmonitor_region (cur_workspace, 
                                             monitor_info->number);

+      meta_window_frame_rect_to_client_rect (window, &placed_rect, &placed_rect);

      info->current.x = placed_rect.x;
      info->current.y = placed_rect.y;
@@ -584,10 +560,6 @@ place_window_if_needed(MetaWindow     *window,
                (window->maximize_vertically_after_placement ?
                 META_MAXIMIZE_VERTICAL : 0), &info->current);

-          /* maximization may have changed frame geometry */
-          if (!window->fullscreen)
-            meta_frame_calc_borders (window->frame, info->borders);
-
          if (window->fullscreen_after_placement)
            {
              window->saved_rect = info->current;
@@ -647,7 +619,7 @@ update_onscreen_requirements (MetaWindow     *window,
  /* The require onscreen/on-single-monitor and titlebar_visible
   * stuff is relative to the outer window, not the inner
   */
-  extend_by_frame (&info->current, info->borders);
+  extend_by_frame (window, &info->current);

  /* Update whether we want future constraint runs to require the
   * window to be on fully onscreen.
@@ -680,10 +652,13 @@ update_onscreen_requirements (MetaWindow     *window,
   */
  if (window->frame && window->decorated)
    {
+      MetaFrameBorders borders;
      MetaRectangle titlebar_rect;

+      meta_frame_calc_borders (window->frame, &borders);
+
      titlebar_rect = info->current;
-      titlebar_rect.height = info->borders->visible.top;
+      titlebar_rect.height = borders.visible.top;
      old = window->require_titlebar_visible;
      window->require_titlebar_visible =
        meta_rectangle_overlaps_with_region (info->usable_screen_region,
@@ -696,39 +671,33 @@ update_onscreen_requirements (MetaWindow     *window,
    }

  /* Don't forget to restore the position of the window */
-  unextend_by_frame (&info->current, info->borders);
+  unextend_by_frame (window, &info->current);
 }

 static void
-extend_by_frame (MetaRectangle           *rect,
-                 const MetaFrameBorders *borders)
+extend_by_frame (MetaWindow    *window,
+                 MetaRectangle *rect)
 {
-  rect->x -= borders->visible.left;
-  rect->y -= borders->visible.top;
-  rect->width  += borders->visible.left + borders->visible.right;
-  rect->height += borders->visible.top + borders->visible.bottom;
+  meta_window_client_rect_to_frame_rect (window, rect, rect);
 }

 static void
-unextend_by_frame (MetaRectangle           *rect,
-                   const MetaFrameBorders *borders)
+unextend_by_frame (MetaWindow    *window,
+                   MetaRectangle *rect)
 {
-  rect->x += borders->visible.left;
-  rect->y += borders->visible.top;
-  rect->width  -= borders->visible.left + borders->visible.right;
-  rect->height -= borders->visible.top + borders->visible.bottom;
+  meta_window_frame_rect_to_client_rect (window, rect, rect);
 }

 static inline void
-get_size_limits (const MetaWindow        *window,
-                 const MetaFrameBorders *borders,
-                 gboolean                 include_frame,
+get_size_limits (MetaWindow    *window,
+                 gboolean       include_frame,
                 MetaRectangle *min_size,
                 MetaRectangle *max_size)
 {
  /* We pack the results into MetaRectangle structs just for convienience; we
   * don't actually use the position of those rects.
   */
+  min_size->x = min_size->y = max_size->x = max_size->y = 0;
  min_size->width  = window->size_hints.min_width;
  min_size->height = window->size_hints.min_height;
  max_size->width  = window->size_hints.max_width;
@@ -736,22 +705,8 @@ get_size_limits (const MetaWindow        *window,

  if (include_frame)
    {
-      int fw = borders->visible.left + borders->visible.right;
-      int fh = borders->visible.top + borders->visible.bottom;
-
-      min_size->width  += fw;
-      min_size->height += fh;
-      /* Do check to avoid overflow (e.g. max_size->width & max_size->height
-       * may be set to G_MAXINT by meta_set_normal_hints()).
-       */
-      if (max_size->width < (G_MAXINT - fw))
-        max_size->width += fw;
-      else
-        max_size->width = G_MAXINT;
-      if (max_size->height < (G_MAXINT - fh))
-        max_size->height += fh;
-      else
-        max_size->height = G_MAXINT;
+      meta_window_client_rect_to_frame_rect (window, min_size, min_size);
+      meta_window_client_rect_to_frame_rect (window, max_size, max_size);
    }
 }

@@ -763,18 +718,28 @@ constrain_modal_dialog (MetaWindow         *window,
 {
  int x, y;
  MetaWindow *parent = meta_window_get_transient_for (window);
+  MetaRectangle child_rect, parent_rect;
  gboolean constraint_already_satisfied;

  if (!meta_window_is_attached_dialog (window))
    return TRUE;

-  x = parent->rect.x + (parent->rect.width / 2  - info->current.width / 2);
-  y = parent->rect.y + (parent->rect.height / 2 - info->current.height / 2);
-  if (parent->frame)
-    {
-      x += parent->frame->rect.x;
-      y += parent->frame->rect.y;
-    }
+  /* We want to center the dialog on the parent, including the decorations
+     for both of them. info->current is in client X window coordinates, so we need
+     to convert them to frame coordinates, apply the centering and then
+     convert back to client.
+  */
+
+  child_rect = info->current;
+  extend_by_frame (window, &child_rect);
+
+  meta_window_get_frame_rect (parent, &parent_rect);
+
+  child_rect.x = parent_rect.x + (parent_rect.width / 2  - child_rect.width / 2);
+  child_rect.y = parent_rect.y + (parent_rect.height / 2 - child_rect.height / 2);
+  unextend_by_frame (window, &child_rect);
+  x = child_rect.x;
+  y = child_rect.y;

  constraint_already_satisfied = (x == info->current.x) && (y == info->current.y);

@@ -839,19 +804,19 @@ constrain_maximization (MetaWindow         *window,
      active_workspace_struts = window->screen->active_workspace->all_struts;

      target_size = info->current;
-      extend_by_frame (&target_size, info->borders);
+      extend_by_frame (window, &target_size);
      meta_rectangle_expand_to_avoiding_struts (&target_size,
                                                &info->entire_monitor,
                                                direction,
                                                active_workspace_struts);
   }
  /* Now make target_size = maximized size of client window */
-  unextend_by_frame (&target_size, info->borders);
+  unextend_by_frame (window, &target_size);

  /* Check min size constraints; max size constraints are ignored for maximized
   * windows, as per bug 327543.
   */
-  get_size_limits (window, info->borders, FALSE, &min_size, &max_size);
+  get_size_limits (window, FALSE, &min_size, &max_size);
  hminbad = target_size.width < min_size.width && window->maximized_horizontally;
  vminbad = target_size.height < min_size.height && window->maximized_vertically;
  if (hminbad || vminbad)
@@ -905,12 +870,12 @@ constrain_tiling (MetaWindow         *window,
   * use an external function for the actual calculation
   */
  meta_window_get_current_tile_area (window, &target_size);
-  unextend_by_frame (&target_size, info->borders);
+  unextend_by_frame (window, &target_size);

  /* Check min size constraints; max size constraints are ignored as for
   * maximized windows.
   */
-  get_size_limits (window, info->borders, FALSE, &min_size, &max_size);
+  get_size_limits (window, FALSE, &min_size, &max_size);
  hminbad = target_size.width < min_size.width;
  vminbad = target_size.height < min_size.height;
  if (hminbad || vminbad)
@@ -953,7 +918,7 @@ constrain_fullscreen (MetaWindow         *window,

  monitor = info->entire_monitor;

-  get_size_limits (window, info->borders, FALSE, &min_size, &max_size);
+  get_size_limits (window, FALSE, &min_size, &max_size);
  too_big =   !meta_rectangle_could_fit_rect (&monitor, &min_size);
  too_small = !meta_rectangle_could_fit_rect (&max_size, &monitor);
  if (too_big || too_small)
@@ -1062,7 +1027,7 @@ constrain_size_limits (MetaWindow         *window,
    return TRUE;

  /* Determine whether constraint is already satisfied; exit if it is */
-  get_size_limits (window, info->borders, FALSE, &min_size, &max_size);
+  get_size_limits (window, FALSE, &min_size, &max_size);
  /* We ignore max-size limits for maximized windows; see #327543 */
  if (window->maximized_horizontally)
    max_size.width = MAX (max_size.width, info->current.width);
@@ -1254,8 +1219,8 @@ do_screen_and_monitor_relative_constraints (

  /* Determine whether constraint applies; exit if it doesn't */
  how_far_it_can_be_smushed = info->current;
-  get_size_limits (window, info->borders, TRUE, &min_size, &max_size);
-  extend_by_frame (&info->current, info->borders);
+  get_size_limits (window, TRUE, &min_size, &max_size);
+  extend_by_frame (window, &info->current);

  if (info->action_type != ACTION_MOVE)
    {
@@ -1275,7 +1240,7 @@ do_screen_and_monitor_relative_constraints (
                                        &info->current);
  if (exit_early || constraint_satisfied || check_only)
    {
-      unextend_by_frame (&info->current, info->borders);
+      unextend_by_frame (window, &info->current);
      return constraint_satisfied;
    }

@@ -1299,7 +1264,7 @@ do_screen_and_monitor_relative_constraints (
                                      info->fixed_directions,
                                      &info->current);

-  unextend_by_frame (&info->current, info->borders);
+  unextend_by_frame (window, &info->current);
  return TRUE;
 }

@@ -1388,7 +1353,6 @@ constrain_titlebar_visible (MetaWindow         *window,
      window->type == META_WINDOW_DOCK    ||
      window->fullscreen                  ||
      !window->require_titlebar_visible   ||
-      !window->decorated                  ||
      unconstrained_user_action)
    return TRUE;

@@ -1412,8 +1376,11 @@ constrain_titlebar_visible (MetaWindow         *window,
   */
  if (window->frame)
    {
-      bottom_amount = info->current.height + info->borders->visible.bottom;
-      vert_amount_onscreen = info->borders->visible.top;
+      MetaFrameBorders borders;
+      meta_frame_calc_borders (window->frame, &borders);
+
+      bottom_amount = info->current.height + borders.visible.bottom;
+      vert_amount_onscreen = borders.visible.top;
    }
  else
    bottom_amount = vert_amount_offscreen;
@@ -1487,8 +1454,11 @@ constrain_partially_onscreen (MetaWindow         *window,
   */
  if (window->frame)
    {
-      bottom_amount = info->current.height + info->borders->visible.bottom;
-      vert_amount_onscreen = info->borders->visible.top;
+      MetaFrameBorders borders;
+      meta_frame_calc_borders (window->frame, &borders);
+
+      bottom_amount = info->current.height + borders.visible.bottom;
+      vert_amount_onscreen = borders.visible.top;
    }
  else
    bottom_amount = vert_amount_offscreen;
--- a/src/core/constraints.h
+++ b/src/core/constraints.h
@@ -17,9 +17,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef META_CONSTRAINTS_H
@@ -40,7 +38,6 @@ typedef enum
 } MetaMoveResizeFlags;

 void meta_window_constrain (MetaWindow          *window,
-                            MetaFrameBorders    *orig_borders,
                            MetaMoveResizeFlags  flags,
                            int                  resize_gravity,
                            const MetaRectangle *orig,
--- a/src/core/core.c
+++ b/src/core/core.c
@@ -18,9 +18,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #include <config.h>
@@ -172,6 +170,7 @@ meta_core_queue_frame_resize (Display *xdisplay,
  MetaWindow *window = get_window (xdisplay, frame_xwindow);

  meta_window_queue (window, META_QUEUE_MOVE_RESIZE);
+  meta_window_frame_size_changed (window);
 }

 void
@@ -282,8 +281,7 @@ meta_core_lower_beneath_grab_window (Display *xdisplay,
    return;

  changes.stack_mode = Below;
-  changes.sibling = grab_window->frame ? grab_window->frame->xwindow
-                                       : grab_window->xwindow;
+  changes.sibling = meta_window_get_toplevel_xwindow (grab_window);

  stack_window.any.type = META_WINDOW_CLIENT_TYPE_X11;
  stack_window.x11.xwindow = xwindow;
@@ -476,26 +474,6 @@ meta_core_change_workspace (Display *xdisplay,
                                                                    new_workspace));
 }

-int
-meta_core_get_num_workspaces (Screen  *xscreen)
-{
-  MetaScreen *screen;
-
-  screen = meta_screen_for_x_screen (xscreen);
-
-  return meta_screen_get_n_workspaces (screen);
-}
-
-int
-meta_core_get_active_workspace (Screen *xscreen)
-{
-  MetaScreen *screen;
-
-  screen = meta_screen_for_x_screen (xscreen);
-
-  return meta_workspace_index (screen->active_workspace);
-}
-
 void
 meta_core_show_window_menu (Display *xdisplay,
                            Window   frame_xwindow,
--- a/src/core/core.h
+++ b/src/core/core.h
@@ -17,9 +17,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef META_CORE_H
@@ -153,8 +151,6 @@ void meta_core_change_workspace (Display *xdisplay,
                                 Window   frame_xwindow,
                                 int      new_workspace);

-int meta_core_get_num_workspaces (Screen  *xscreen);
-int meta_core_get_active_workspace (Screen *xscreen);
 int meta_core_get_frame_workspace (Display *xdisplay,
                                   Window frame_xwindow);
 const char* meta_core_get_workspace_name_with_index (Display *xdisplay,
--- a/src/core/delete.c
+++ b/src/core/delete.c
@@ -17,9 +17,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #define _XOPEN_SOURCE /* for kill() */
@@ -39,18 +37,17 @@
 #include <stdlib.h>
 #include <stdio.h>

+#include "meta-wayland-surface.h"
+
 static void meta_window_present_delete_dialog (MetaWindow *window,
                                               guint32     timestamp);

 static void
-delete_ping_reply_func (MetaDisplay *display,
-                        Window       xwindow,
+delete_ping_reply_func (MetaWindow  *window,
                        guint32      timestamp,
                        void        *user_data)
 {
-  meta_topic (META_DEBUG_PING,
-              "Got reply to delete ping for %s\n",
-              ((MetaWindow*)user_data)->desc);
+  meta_topic (META_DEBUG_PING, "Got reply to delete ping for %s\n", window->desc);

  /* we do nothing */
 }
@@ -68,12 +65,10 @@ dialog_exited (GPid pid, int status, gpointer user_data)
 }

 static void
-delete_ping_timeout_func (MetaDisplay *display,
-                          Window       xwindow,
+delete_ping_timeout_func (MetaWindow  *window,
                          guint32      timestamp,
                          void        *user_data)
 {
-  MetaWindow *window = user_data;
  char *window_title;
  gchar *window_content, *tmp;
  GPid dialog_pid;
@@ -137,36 +132,42 @@ void
 meta_window_check_alive (MetaWindow *window,
                         guint32     timestamp)
 {
-  meta_display_ping_window (window->display,
-                            window,
+  meta_display_ping_window (window,
                            timestamp,
                            delete_ping_reply_func,
                            delete_ping_timeout_func,
-                            window);
+                            NULL);
 }

 void
 meta_window_delete (MetaWindow  *window,
                    guint32      timestamp)
 {
-  meta_error_trap_push (window->display);
-  if (window->delete_window)
+  if (window->client_type == META_WINDOW_CLIENT_TYPE_X11)
    {
-      meta_topic (META_DEBUG_WINDOW_OPS,
-                  "Deleting %s with delete_window request\n",
-                  window->desc);
-      meta_window_send_icccm_message (window,
-                                      window->display->atom_WM_DELETE_WINDOW,
-                                      timestamp);
+      meta_error_trap_push (window->display);
+      if (window->delete_window)
+        {
+          meta_topic (META_DEBUG_WINDOW_OPS,
+                      "Deleting %s with delete_window request\n",
+                      window->desc);
+          meta_window_send_icccm_message (window,
+                                          window->display->atom_WM_DELETE_WINDOW,
+                                          timestamp);
+        }
+      else
+        {
+          meta_topic (META_DEBUG_WINDOW_OPS,
+                      "Deleting %s with explicit kill\n",
+                      window->desc);
+          XKillClient (window->display->xdisplay, window->xwindow);
+        }
+      meta_error_trap_pop (window->display);
    }
  else
    {
-      meta_topic (META_DEBUG_WINDOW_OPS,
-                  "Deleting %s with explicit kill\n",
-                  window->desc);
-      XKillClient (window->display->xdisplay, window->xwindow);
+      meta_wayland_surface_delete (window->surface);
    }
-  meta_error_trap_pop (window->display);

  meta_window_check_alive (window, timestamp);

--- a/src/core/display-private.h
+++ b/src/core/display-private.h
@@ -19,9 +19,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef META_DISPLAY_PRIVATE_H
@@ -39,6 +37,7 @@
 #include "keybindings-private.h"
 #include <meta/prefs.h>
 #include <meta/barrier.h>
+#include <clutter/clutter.h>

 #ifdef HAVE_STARTUP_NOTIFICATION
 #include <libsn/sn.h>
@@ -56,10 +55,9 @@ typedef struct _MetaWindowPropHooks MetaWindowPropHooks;

 typedef struct MetaEdgeResistanceData MetaEdgeResistanceData;

-typedef void (* MetaWindowPingFunc) (MetaDisplay *display,
-				     Window       xwindow,
-				     guint32      timestamp,
-				     gpointer     user_data);
+typedef void (* MetaWindowPingFunc) (MetaWindow  *window,
+                                     guint32      timestamp,
+                                     gpointer     user_data);

 typedef enum {
  META_LIST_DEFAULT                   = 0,      /* normal windows */
@@ -86,14 +84,6 @@ typedef enum {
  META_TILE_MAXIMIZED
 } MetaTileMode;

-typedef enum {
-  META_FOCUS_NONE = 0,
-  META_FOCUS_X_CLIENT = 1,
-  META_FOCUS_WAYLAND_CLIENT = 2,
-  META_FOCUS_NO_FOCUS_WINDOW = 3,
-  META_FOCUS_STAGE = 4
-} MetaFocusType;
-
 struct _MetaDisplay
 {
  GObject parent_instance;
@@ -101,6 +91,8 @@ struct _MetaDisplay
  char *name;
  Display *xdisplay;

+  int clutter_event_filter;
+
  Window leader_window;
  Window timestamp_pinging_window;

@@ -125,7 +117,6 @@ struct _MetaDisplay
   * like the no_focus_window or the stage X window. */
  Window focus_xwindow;
  gulong focus_serial;
-  MetaFocusType focus_type;

  /* last timestamp passed to XSetInputFocus */
  guint32 last_focus_time;
@@ -147,6 +138,14 @@ struct _MetaDisplay
   */
  guint allow_terminal_deactivation : 1;

+  /* If true, server->focus_serial refers to us changing the focus; in
+   * this case, we can ignore focus events that have exactly focus_serial,
+   * since we take care to make another request immediately afterwards.
+   * But if focus is being changed by another client, we have to accept
+   * multiple events with the same serial.
+   */
+  guint focused_by_us : 1;
+
  guint static_gravity_works : 1;
  
  /*< private-ish >*/
@@ -189,7 +188,7 @@ struct _MetaDisplay
  MetaWindow* autoraise_window;

  /* Alt+click button grabs */
-  unsigned int window_grab_modifiers;
+  ClutterModifierType window_grab_modifiers;
  
  /* current window operation */
  MetaGrabOp  grab_op;
@@ -216,7 +215,6 @@ struct _MetaDisplay
  gboolean    grab_threshold_movement_reached; /* raise_on_click == FALSE.    */
  MetaResizePopup *grab_resize_popup;
  GTimeVal    grab_last_moveresize_time;
-  guint32     grab_motion_notify_time;
  GList*      grab_old_window_stacking;
  MetaEdgeResistanceData *grab_edge_resistance_data;
  unsigned int grab_last_user_action_was_snap;
@@ -234,8 +232,8 @@ struct _MetaDisplay
  int	      grab_resize_timeout_id;

  /* Keybindings stuff */
-  MetaKeyBinding *key_bindings;
-  int             n_key_bindings;
+  GHashTable     *key_bindings;
+  GHashTable     *key_bindings_index;
  int             min_keycode;
  int             max_keycode;
  KeySym *keymap;
@@ -445,14 +443,13 @@ void meta_display_retheme_all (void);
 void meta_display_set_cursor_theme (const char *theme, 
 				    int         size);

-void meta_display_ping_window      (MetaDisplay        *display,
-                                    MetaWindow         *window,
+void meta_display_ping_window      (MetaWindow         *window,
                                    guint32             timestamp,
                                    MetaWindowPingFunc  ping_reply_func,
                                    MetaWindowPingFunc  ping_timeout_func,
                                    void               *user_data);
-gboolean meta_display_window_has_pending_pings (MetaDisplay        *display,
-						MetaWindow         *window);
+void meta_display_pong_for_serial  (MetaDisplay        *display,
+                                    guint32             serial);

 int meta_resize_gravity_from_grab_op (MetaGrabOp op);

@@ -473,27 +470,22 @@ void meta_display_queue_autoraise_callback  (MetaDisplay *display,
 void meta_display_remove_autoraise_callback (MetaDisplay *display);

 void meta_display_overlay_key_activate (MetaDisplay *display);
-void meta_display_accelerator_activate (MetaDisplay *display,
-                                        guint        action,
-                                        guint        deviceid,
-                                        guint        timestamp);
+void meta_display_accelerator_activate (MetaDisplay     *display,
+                                        guint            action,
+                                        ClutterKeyEvent *event);
 gboolean meta_display_modifiers_accelerator_activate (MetaDisplay *display);

 /* In above-tab-keycode.c */
 guint meta_display_get_above_tab_keycode (MetaDisplay *display);

-gboolean meta_display_handle_event (MetaDisplay *display,
-                                    XEvent      *event);
-
 #ifdef HAVE_XI23
-gboolean meta_display_process_barrier_event (MetaDisplay    *display,
-                                             XIBarrierEvent *event);
+gboolean meta_display_process_barrier_event (MetaDisplay *display,
+                                             XIEvent     *event);
 #endif /* HAVE_XI23 */

-void meta_display_set_input_focus_xwindow (MetaDisplay   *display,
-                                           MetaScreen    *screen,
-                                           MetaFocusType  type,
-                                           Window         window,
-                                           guint32        timestamp);
+void meta_display_set_input_focus_xwindow (MetaDisplay *display,
+                                           MetaScreen  *screen,
+                                           Window       window,
+                                           guint32      timestamp);

 #endif
--- a/src/core/display.c
+++ b/src/core/display.c
--- a/src/core/edge-resistance.c
+++ b/src/core/edge-resistance.c
@@ -16,9 +16,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #include <config.h>
@@ -985,7 +983,7 @@ compute_resistance_and_snapping_edges (MetaDisplay *display)
        {
          MetaRectangle *new_rect;
          new_rect = g_new (MetaRectangle, 1);
-          meta_window_get_outer_rect (cur_window, new_rect);
+          meta_window_get_frame_rect (cur_window, new_rect);
          obscuring_windows = g_slist_prepend (obscuring_windows, new_rect);
          window_stacking = 
            g_slist_prepend (window_stacking, GINT_TO_POINTER (stack_position));
@@ -1010,7 +1008,7 @@ compute_resistance_and_snapping_edges (MetaDisplay *display)
    {
      MetaRectangle  cur_rect;
      MetaWindow    *cur_window = cur_window_iter->data;
-      meta_window_get_outer_rect (cur_window, &cur_rect);
+      meta_window_get_frame_rect (cur_window, &cur_rect);

      /* Check if we want to use this window's edges for edge
       * resistance (note that dock edges are considered screen edges
@@ -1151,7 +1149,7 @@ meta_window_edge_resistance_for_move (MetaWindow  *window,
  MetaRectangle old_outer, proposed_outer, new_outer;
  gboolean is_resize;

-  meta_window_get_outer_rect (window, &old_outer);
+  meta_window_get_frame_rect (window, &old_outer);

  proposed_outer = old_outer;
  proposed_outer.x += (*new_x - old_x);
@@ -1237,7 +1235,7 @@ meta_window_edge_resistance_for_resize (MetaWindow  *window,
  int proposed_outer_width, proposed_outer_height;
  gboolean is_resize;

-  meta_window_get_outer_rect (window, &old_outer);
+  meta_window_get_frame_rect (window, &old_outer);
  proposed_outer_width  = old_outer.width  + (*new_width  - old_width);
  proposed_outer_height = old_outer.height + (*new_height - old_height);
  meta_rectangle_resize_with_gravity (&old_outer, 
--- a/src/core/edge-resistance.h
+++ b/src/core/edge-resistance.h
@@ -16,9 +16,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef META_EDGE_RESISTANCE_H
--- a/src/core/errors.c
+++ b/src/core/errors.c
@@ -15,9 +15,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 /**
--- a/src/core/frame.c
+++ b/src/core/frame.c
@@ -18,9 +18,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #include <config.h>
@@ -52,9 +50,6 @@ meta_window_ensure_frame (MetaWindow *window)
  if (window->frame)
    return;
  
-  /* See comment below for why this is required. */
-  meta_display_grab (window->display);
-  
  frame = g_new (MetaFrame, 1);

  frame->window = window;
@@ -67,8 +62,8 @@ meta_window_ensure_frame (MetaWindow *window)
  frame->right_width = 0;
  frame->current_cursor = 0;

-  frame->mapped = FALSE;
  frame->is_flashing = FALSE;
+  frame->borders_cached = FALSE;
  
  meta_verbose ("Framing window %s: visual %s default, depth %d default depth %d\n",
                window->desc,
@@ -119,14 +114,6 @@ meta_window_ensure_frame (MetaWindow *window)
  
  meta_display_register_x_window (window->display, &frame->xwindow, window);

-  /* Reparent the client window; it may be destroyed,
-   * thus the error trap. We'll get a destroy notify later
-   * and free everything. Comment in FVWM source code says
-   * we need a server grab or the child can get its MapNotify
-   * before we've finished reparenting and getting the decoration
-   * window onscreen, so ensure_frame must be called with
-   * a grab.
-   */
  meta_error_trap_push (window->display);
  if (window->mapped)
    {
@@ -170,7 +157,7 @@ meta_window_ensure_frame (MetaWindow *window)
  /* Move keybindings to frame instead of window */
  meta_window_grab_keys (window);

-  meta_display_ungrab (window->display);
+  meta_ui_map_frame (frame->window->screen->ui, frame->xwindow);
 }

 void
@@ -334,9 +321,23 @@ meta_frame_calc_borders (MetaFrame        *frame,
  if (frame == NULL)
    meta_frame_borders_clear (borders);
  else
-    meta_ui_get_frame_borders (frame->window->screen->ui,
-                               frame->xwindow,
-                               borders);
+    {
+      if (!frame->borders_cached)
+        {
+          meta_ui_get_frame_borders (frame->window->screen->ui,
+                                     frame->xwindow,
+                                     &frame->cached_borders);
+          frame->borders_cached = TRUE;
+        }
+
+      *borders = frame->cached_borders;
+    }
+}
+
+void
+meta_frame_clear_cached_borders (MetaFrame *frame)
+{
+  frame->borders_cached = FALSE;
 }

 gboolean
--- a/src/core/frame.h
+++ b/src/core/frame.h
@@ -16,9 +16,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef META_FRAME_PRIVATE_H
@@ -41,15 +39,17 @@ struct _MetaFrame
   */
  MetaRectangle rect;

+  MetaFrameBorders cached_borders; /* valid if borders_cached is set */
+
  /* position of client, size of frame */
  int child_x;
  int child_y;
  int right_width;
  int bottom_height;

-  guint mapped : 1;
  guint need_reapply_frame_shape : 1;
  guint is_flashing : 1; /* used by the visual bell flash */
+  guint borders_cached : 1;
 };

 void     meta_window_ensure_frame           (MetaWindow *window);
@@ -68,6 +68,8 @@ gboolean meta_frame_sync_to_window (MetaFrame         *frame,
                                    gboolean           need_move,
                                    gboolean           need_resize);

+void meta_frame_clear_cached_borders (MetaFrame *frame);
+
 cairo_region_t *meta_frame_get_frame_bounds (MetaFrame *frame);

 void meta_frame_get_mask (MetaFrame *frame,
--- a/src/core/group-private.h
+++ b/src/core/group-private.h
@@ -16,9 +16,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef META_GROUP_PRIVATE_H
--- a/src/core/group-props.c
+++ b/src/core/group-props.c
@@ -16,9 +16,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #include <config.h>
--- a/src/core/group-props.h
+++ b/src/core/group-props.h
@@ -16,9 +16,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef META_GROUP_PROPS_H
--- a/src/core/group.c
+++ b/src/core/group.c
@@ -15,9 +15,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 /**
--- a/src/core/iconcache.c
+++ b/src/core/iconcache.c
@@ -16,9 +16,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #include <config.h>
--- a/src/core/iconcache.h
+++ b/src/core/iconcache.h
@@ -16,9 +16,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef META_ICON_CACHE_H
--- a/src/core/keybindings-private.h
+++ b/src/core/keybindings-private.h
@@ -21,9 +21,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef META_KEYBINDINGS_PRIVATE_H
@@ -32,6 +30,7 @@
 #include <gio/gio.h>
 #include <meta/keybindings.h>

+typedef struct _MetaKeyHandler MetaKeyHandler;
 struct _MetaKeyHandler
 {
  char *name;
@@ -49,9 +48,48 @@ struct _MetaKeyBinding
  KeyCode keycode;
  unsigned int mask;
  MetaVirtualModifier modifiers;
+  gint flags;
  MetaKeyHandler *handler;
 };

+/**
+ * MetaKeyCombo:
+ * @keysym: keysym
+ * @keycode: keycode
+ * @modifiers: modifiers
+ */
+typedef struct _MetaKeyCombo MetaKeyCombo;
+struct _MetaKeyCombo
+{
+  unsigned int keysym;
+  unsigned int keycode;
+  MetaVirtualModifier modifiers;
+};
+
+typedef struct
+{
+  char *name;
+  GSettings *settings;
+
+  MetaKeyBindingAction action;
+
+  /*
+   * A list of MetaKeyCombos. Each of them is bound to
+   * this keypref. If one has keysym==modifiers==0, it is
+   * ignored.
+   */
+  GSList *combos;
+
+  /* for keybindings that can have shift or not like Alt+Tab */
+  gboolean      add_shift:1;
+
+  /* for keybindings that apply only to a window */
+  gboolean      per_window:1;
+
+  /* for keybindings not added with meta_display_add_keybinding() */
+  gboolean      builtin:1;
+} MetaKeyPref;
+
 void     meta_display_init_keys             (MetaDisplay *display);
 void     meta_display_shutdown_keys         (MetaDisplay *display);
 void     meta_screen_grab_keys              (MetaScreen  *screen);
@@ -66,9 +104,9 @@ gboolean meta_window_grab_all_keys          (MetaWindow  *window,
                                             guint32      timestamp);
 void     meta_window_ungrab_all_keys        (MetaWindow  *window,
                                             guint32      timestamp);
-gboolean meta_display_process_key_event     (MetaDisplay   *display,
-                                             MetaWindow    *window,
-                                             XIDeviceEvent *event);
+gboolean meta_display_process_key_event     (MetaDisplay     *display,
+                                             MetaWindow      *window,
+                                             ClutterKeyEvent *event);
 void     meta_display_process_mapping_event (MetaDisplay *display,
                                             XEvent      *event);

@@ -79,9 +117,8 @@ gboolean meta_prefs_add_keybinding          (const char           *name,

 gboolean meta_prefs_remove_keybinding       (const char    *name);

+GList *meta_prefs_get_keybindings (void);
+void meta_prefs_get_overlay_binding (MetaKeyCombo *combo);
+const char *meta_prefs_get_iso_next_group_option (void);

 #endif
-
-
-
-
--- a/src/core/keybindings.c
+++ b/src/core/keybindings.c
--- a/src/core/main.c
+++ b/src/core/main.c
@@ -17,9 +17,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 /**
@@ -55,7 +53,7 @@
 #include "session.h"
 #include <meta/prefs.h>
 #include <meta/compositor.h>
-#include "meta-wayland-private.h"
+#include "meta-wayland.h"

 #include <glib-object.h>
 #include <glib-unix.h>
@@ -256,19 +254,8 @@ meta_get_option_context (void)
  bindtextdomain (GETTEXT_PACKAGE, MUTTER_LOCALEDIR);
  bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");

-  /* We must set the windowing backend here, because Clutter creates the backend
-     object when the first call is made.
-
-     We consider running from mutter-launch equivalent to running from bare metal.
-  */
-  if (getenv ("WESTON_LAUNCHER_SOCK"))
-    clutter_set_windowing_backend (CLUTTER_WINDOWING_EGL);
-
  ctx = g_option_context_new (NULL);
  g_option_context_add_main_entries (ctx, meta_options, GETTEXT_PACKAGE);
-  g_option_context_add_group (ctx, clutter_get_option_group_without_init ());
-  g_option_context_add_group (ctx, cogl_get_option_group ());
-
  return ctx;
 }

@@ -304,8 +291,12 @@ event_dispatch (GSource    *source,
                gpointer    user_data)
 {
  ClutterEvent *event = clutter_event_get ();
+
  if (event)
-    clutter_do_event (event);
+    {
+      clutter_do_event (event);
+      clutter_event_free (event);
+    }

  return TRUE;
 }
@@ -343,16 +334,17 @@ meta_clutter_init (void)
 * also is %NULL, use the default - :0.0
 */
 static void
-meta_select_display (gchar *display_name)
+meta_select_display (char *display_arg)
 {
-  gchar *envVar = "";
+  const char *display_name;
+
+  if (display_arg)
+    display_name = (const char *) display_arg;
+  else
+    display_name = g_getenv ("MUTTER_DISPLAY");
+
  if (display_name)
-    envVar = g_strconcat ("DISPLAY=", display_name, NULL);
-  else if (g_getenv ("MUTTER_DISPLAY"))
-    envVar = g_strconcat ("DISPLAY=",
-      g_getenv ("MUTTER_DISPLAY"), NULL);
-  /* DO NOT FREE envVar, putenv() sucks */
-  putenv (envVar);
+    g_setenv ("DISPLAY", display_name, TRUE);
 }

 static void
@@ -387,7 +379,8 @@ meta_init (void)
 {
  struct sigaction act;
  sigset_t empty_mask;
-  
+  ClutterSettings *clutter_settings;
+
  sigemptyset (&empty_mask);
  act.sa_handler = SIG_IGN;
  act.sa_mask    = empty_mask;
@@ -408,6 +401,10 @@ meta_init (void)
  if (g_getenv ("MUTTER_DEBUG"))
    meta_set_debugging (TRUE);

+  /* We consider running from mutter-launch equivalent to running from bare metal. */
+  if (getenv ("WESTON_LAUNCHER_SOCK"))
+    clutter_set_windowing_backend (CLUTTER_WINDOWING_EGL);
+
  meta_set_is_wayland_compositor (opt_wayland);

  if (g_get_home_dir ())
@@ -439,7 +436,7 @@ meta_init (void)
    meta_fatal ("Can't specify both SM save file and SM client id\n");
  
  meta_main_loop = g_main_loop_new (NULL, FALSE);
-  
+
  meta_ui_init ();

  /* If we are running with wayland then we don't wait until we have
@@ -453,6 +450,13 @@ meta_init (void)
       */
      meta_clutter_init ();
    }
+
+  /*
+   * XXX: We cannot handle high dpi scaling yet, so fix the scale to 1
+   * for now.
+   */
+  clutter_settings = clutter_settings_get_default ();
+  g_object_set (clutter_settings, "window-scaling-factor", 1, NULL);
 }

 /**
--- a/src/core/meta-cursor-tracker-private.h
+++ b/src/core/meta-cursor-tracker-private.h
@@ -14,9 +14,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 *
 * Author: Giovanni Campagna <gcampagn@redhat.com>
 */
@@ -31,18 +29,18 @@
 gboolean meta_cursor_tracker_handle_xevent (MetaCursorTracker *tracker,
 					    XEvent            *xevent);

-void     meta_cursor_tracker_set_root_cursor (MetaCursorTracker *tracker,
-                                              MetaCursor         cursor);
-void     meta_cursor_tracker_revert_root     (MetaCursorTracker *tracker);
-void     meta_cursor_tracker_set_buffer      (MetaCursorTracker  *tracker,
-                                              struct wl_resource *buffer,
-                                              int                 hot_x,
-                                              int                 hot_y);
+void     meta_cursor_tracker_set_grab_cursor     (MetaCursorTracker  *tracker,
+                                                  MetaCursor          cursor);
+void     meta_cursor_tracker_set_window_cursor   (MetaCursorTracker  *tracker,
+                                                  struct wl_resource *buffer,
+                                                  int                 hot_x,
+                                                  int                 hot_y);
+void     meta_cursor_tracker_unset_window_cursor (MetaCursorTracker  *tracker);
+void     meta_cursor_tracker_set_root_cursor     (MetaCursorTracker  *tracker,
+                                                  MetaCursor          cursor);

 void     meta_cursor_tracker_update_position (MetaCursorTracker *tracker,
 					      int                new_x,
 					      int                new_y);
 void     meta_cursor_tracker_paint           (MetaCursorTracker *tracker);
-void     meta_cursor_tracker_queue_redraw    (MetaCursorTracker *tracker,
-					      ClutterActor      *stage);
 #endif
--- a/src/core/meta-cursor-tracker.c
+++ b/src/core/meta-cursor-tracker.c
@@ -14,9 +14,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 *
 * Author: Giovanni Campagna <gcampagn@redhat.com>
 */
@@ -42,6 +40,7 @@

 #include <gdk/gdk.h>

+#include <X11/cursorfont.h>
 #include <X11/extensions/Xfixes.h>
 #include <X11/Xcursor/Xcursor.h>

@@ -67,11 +66,34 @@ struct _MetaCursorTracker {
  MetaScreen *screen;

  gboolean is_showing;
-  gboolean has_cursor;
  gboolean has_hw_cursor;

-  MetaCursorReference *sprite;
+  /* The cursor tracker stores the cursor for the current grab
+   * operation, the cursor for the window with pointer focus, and
+   * the cursor for the root window, which contains either the
+   * default arrow cursor or the 'busy' hourglass if we're launching
+   * an app.
+   *
+   * We choose the first one available -- if there's a grab cursor,
+   * we choose that cursor, if there's window cursor, we choose that,
+   * otherwise we choose the root cursor.
+   *
+   * The displayed_cursor contains the chosen cursor.
+   */
+  MetaCursorReference *displayed_cursor;
+
+  MetaCursorReference *grab_cursor;
+
+  /* Wayland clients can set a NULL buffer as their cursor 
+   * explicitly, which means that we shouldn't display anything.
+   * So, we can't simply store a NULL in window_cursor to
+   * determine an unset window cursor; we need an extra boolean.
+   */
+  gboolean has_window_cursor;
+  MetaCursorReference *window_cursor;
+
  MetaCursorReference *root_cursor;
+
  MetaCursorReference *default_cursors[META_CURSOR_LAST];

  int current_x, current_y;
@@ -97,12 +119,10 @@ enum {

 static guint signals[LAST_SIGNAL];

-static void meta_cursor_tracker_set_sprite (MetaCursorTracker   *tracker,
-                                            MetaCursorReference *sprite);
-
 static void meta_cursor_tracker_set_crtc_has_hw_cursor (MetaCursorTracker *tracker,
                                                        MetaCRTC          *crtc,
                                                        gboolean           has_hw_cursor);
+static void sync_cursor (MetaCursorTracker *tracker);

 static MetaCursorReference *
 meta_cursor_reference_ref (MetaCursorReference *self)
@@ -128,76 +148,130 @@ meta_cursor_reference_unref (MetaCursorReference *self)
    }
 }

-static const char *
-get_cursor_filename (MetaCursor cursor)
+static void
+translate_meta_cursor (MetaCursor   cursor,
+                       guint       *glyph_out,
+                       const char **name_out)
 {
+  guint glyph = XC_num_glyphs;
+  const char *name = NULL;
+
  switch (cursor)
    {
    case META_CURSOR_DEFAULT:
-      return "left_ptr";
+      glyph = XC_left_ptr;
      break;
    case META_CURSOR_NORTH_RESIZE:
-      return "top_side";
+      glyph = XC_top_side;
      break;
    case META_CURSOR_SOUTH_RESIZE:
-      return "bottom_side";
+      glyph = XC_bottom_side;
      break;
    case META_CURSOR_WEST_RESIZE:
-      return "left_side";
+      glyph = XC_left_side;
      break;
    case META_CURSOR_EAST_RESIZE:
-      return "right_side";
+      glyph = XC_right_side;
      break;
    case META_CURSOR_SE_RESIZE:
-      return "bottom_right_corner";
+      glyph = XC_bottom_right_corner;
      break;
    case META_CURSOR_SW_RESIZE:
-      return "bottom_left_corner";
+      glyph = XC_bottom_left_corner;
      break;
    case META_CURSOR_NE_RESIZE:
-      return "top_right_corner";
+      glyph = XC_top_right_corner;
      break;
    case META_CURSOR_NW_RESIZE:
-      return "top_left_corner";
+      glyph = XC_top_left_corner;
      break;
    case META_CURSOR_MOVE_OR_RESIZE_WINDOW:
-      return "fleur";
+      glyph = XC_fleur;
      break;
    case META_CURSOR_BUSY:
-      return "watch";
+      glyph = XC_watch;
      break;
    case META_CURSOR_DND_IN_DRAG:
-      return "dnd-in-drag";
+      name = "dnd-none";
      break;
    case META_CURSOR_DND_MOVE:
-      return "dnd-copy";
+      name = "dnd-move";
+      break;
+    case META_CURSOR_DND_COPY:
+      name = "dnd-copy";
      break;
    case META_CURSOR_DND_UNSUPPORTED_TARGET:
-      return "dnd-none";
+      name = "dnd-none";
      break;
    case META_CURSOR_POINTING_HAND:
-      return "hand";
+      glyph = XC_hand2;
      break;
    case META_CURSOR_CROSSHAIR:
-      return "crosshair";
+      glyph = XC_crosshair;
      break;
    case META_CURSOR_IBEAM:
-      return "xterm";
+      glyph = XC_xterm;
      break;

    default:
      g_assert_not_reached ();
-      return NULL;
+      glyph = 0; /* silence compiler */
+      break;
    }
+
+  *glyph_out = glyph;
+  *name_out = name;
+}
+
+static Cursor
+load_cursor_on_server (MetaDisplay *display,
+                       MetaCursor   cursor)
+{
+  Cursor xcursor;
+  guint glyph;
+  const char *name;
+
+  translate_meta_cursor (cursor, &glyph, &name);
+
+  if (name != NULL)
+    xcursor = XcursorLibraryLoadCursor (display->xdisplay, name);
+  else
+    xcursor = XCreateFontCursor (display->xdisplay, glyph);
+
+  return xcursor;
+}
+
+Cursor
+meta_display_create_x_cursor (MetaDisplay *display,
+                              MetaCursor cursor)
+{
+  return load_cursor_on_server (display, cursor);
+}
+
+static XcursorImage *
+load_cursor_on_client (MetaDisplay *display,
+                       MetaCursor   cursor)
+{
+  XcursorImage *image;
+  guint glyph;
+  const char *name;
+  const char *theme = XcursorGetTheme (display->xdisplay);
+  int size = XcursorGetDefaultSize (display->xdisplay);
+
+  translate_meta_cursor (cursor, &glyph, &name);
+
+  if (name != NULL)
+    image = XcursorLibraryLoadImage (name, theme, size);
+  else
+    image = XcursorShapeLoadImage (glyph, theme, size);
+
+  return image;
 }

 static MetaCursorReference *
 meta_cursor_reference_from_theme (MetaCursorTracker  *tracker,
                                  MetaCursor          cursor)
 {
-  const char *theme;
-  const char *filename;
-  int size;
  XcursorImage *image;
  int width, height, rowstride;
  CoglPixelFormat cogl_format;
@@ -206,11 +280,7 @@ meta_cursor_reference_from_theme (MetaCursorTracker  *tracker,
  CoglContext *cogl_context;
  MetaCursorReference *self;

-  filename = get_cursor_filename (cursor);
-  theme = XcursorGetTheme (tracker->screen->display->xdisplay);
-  size = XcursorGetDefaultSize (tracker->screen->display->xdisplay);
-
-  image = XcursorLibraryLoadImage (filename, theme, size);
+  image = load_cursor_on_client (tracker->screen->display, cursor);
  if (!image)
    return NULL;

@@ -235,7 +305,6 @@ meta_cursor_reference_from_theme (MetaCursorTracker  *tracker,
  self->texture = cogl_texture_2d_new_from_data (cogl_context,
                                                 width, height,
                                                 cogl_format,
-                                                 COGL_PIXEL_FORMAT_ANY,
                                                 rowstride,
                                                 (uint8_t*)image->pixels,
                                                 NULL);
@@ -295,13 +364,15 @@ meta_cursor_reference_from_buffer (MetaCursorTracker  *tracker,
  ClutterBackend *backend;
  CoglContext *cogl_context;
  MetaCursorReference *self;
-  CoglPixelFormat cogl_format, cogl_internal_format;
+  CoglPixelFormat cogl_format;
  struct wl_shm_buffer *shm_buffer;
  uint32_t gbm_format;

  self = g_slice_new0 (MetaCursorReference);
  self->ref_count = 1;
- 
+  self->hot_x = hot_x;
+  self->hot_y = hot_y;
+
  backend = clutter_get_default_backend ();
  cogl_context = clutter_backend_get_cogl_context (backend);

@@ -317,37 +388,31 @@ meta_cursor_reference_from_buffer (MetaCursorTracker  *tracker,
 #if G_BYTE_ORDER == G_BIG_ENDIAN
          case WL_SHM_FORMAT_ARGB8888:
            cogl_format = COGL_PIXEL_FORMAT_ARGB_8888_PRE;
-            cogl_internal_format = COGL_PIXEL_FORMAT_ANY;
            gbm_format = GBM_FORMAT_ARGB8888;
            break;
-          case WL_SHM_FORMAT_XRGB32:
+          case WL_SHM_FORMAT_XRGB8888:
            cogl_format = COGL_PIXEL_FORMAT_ARGB_8888;
-            cogl_internal_format = COGL_PIXEL_FORMAT_RGB_888;
            gbm_format = GBM_FORMAT_XRGB8888;
            break;
 #else
          case WL_SHM_FORMAT_ARGB8888:
            cogl_format = COGL_PIXEL_FORMAT_BGRA_8888_PRE;
-            cogl_internal_format = COGL_PIXEL_FORMAT_ANY;
            gbm_format = GBM_FORMAT_ARGB8888;
            break;
          case WL_SHM_FORMAT_XRGB8888:
            cogl_format = COGL_PIXEL_FORMAT_BGRA_8888;
-            cogl_internal_format = COGL_PIXEL_FORMAT_BGR_888;
            gbm_format = GBM_FORMAT_XRGB8888;
            break;
 #endif
          default:
            g_warn_if_reached ();
            cogl_format = COGL_PIXEL_FORMAT_ARGB_8888;
-            cogl_internal_format = COGL_PIXEL_FORMAT_ANY;
            gbm_format = GBM_FORMAT_ARGB8888;
        }

      self->texture = cogl_texture_2d_new_from_data (cogl_context,
                                                     width, height,
                                                     cogl_format,
-                                                     cogl_internal_format,
                                                     rowstride,
                                                     wl_shm_buffer_get_data (shm_buffer),
                                                     NULL);
@@ -403,47 +468,10 @@ meta_cursor_reference_from_buffer (MetaCursorTracker  *tracker,

      if (tracker->gbm)
        {
-          cogl_format = cogl_texture_get_format (COGL_TEXTURE (self->texture));
-          switch (cogl_format)
-            {
-#if G_BYTE_ORDER == G_LITTLE_ENDIAN
-            case COGL_PIXEL_FORMAT_ARGB_8888_PRE:
-            case COGL_PIXEL_FORMAT_ARGB_8888:
-              gbm_format = GBM_FORMAT_BGRA8888;
-              break;
-            case COGL_PIXEL_FORMAT_BGRA_8888_PRE:
-            case COGL_PIXEL_FORMAT_BGRA_8888:
-              break;
-            case COGL_PIXEL_FORMAT_RGB_888:
-              break;
-#else
-            case COGL_PIXEL_FORMAT_ARGB_8888_PRE:
-            case COGL_PIXEL_FORMAT_ARGB_8888:
-              gbm_format = GBM_FORMAT_ARGB8888;
-              break;
-            case COGL_PIXEL_FORMAT_BGRA_8888_PRE:
-            case COGL_PIXEL_FORMAT_BGRA_8888:
-              gbm_format = GBM_FORMAT_BGRA8888;
-              break;
-            case COGL_PIXEL_FORMAT_RGB_888:
-              gbm_format = GBM_FORMAT_RGB888;
-              break;
-#endif
-            default:
-              meta_warning ("Unknown cogl format %d\n", cogl_format);
-              return self;
-            }
-
-          if (gbm_device_is_format_supported (tracker->gbm, gbm_format,
-                                              GBM_BO_USE_CURSOR_64X64))
-            {
-              self->bo = gbm_bo_import (tracker->gbm, GBM_BO_IMPORT_WL_BUFFER,
-                                        buffer, GBM_BO_USE_CURSOR_64X64);
-              if (!self->bo)
-                meta_warning ("Importing HW cursor from wl_buffer failed\n");
-            }
-          else
-            meta_warning ("HW cursor for format %d not supported\n", gbm_format);
+          self->bo = gbm_bo_import (tracker->gbm, GBM_BO_IMPORT_WL_BUFFER,
+                                    buffer, GBM_BO_USE_CURSOR_64X64);
+          if (!self->bo)
+            meta_warning ("Importing HW cursor from wl_buffer failed\n");
        }
     }

@@ -467,8 +495,8 @@ meta_cursor_tracker_finalize (GObject *object)
  MetaCursorTracker *self = META_CURSOR_TRACKER (object);
  int i;

-  if (self->sprite)
-    meta_cursor_reference_unref (self->sprite);
+  if (self->displayed_cursor)
+    meta_cursor_reference_unref (self->displayed_cursor);
  if (self->root_cursor)
    meta_cursor_reference_unref (self->root_cursor);

@@ -542,9 +570,14 @@ make_wayland_cursor_tracker (MetaScreen *screen)
  compositor = meta_wayland_compositor_get_default ();
  compositor->seat->cursor_tracker = self;

-  self->drm_fd = compositor->drm_fd;
-  if (self->drm_fd >= 0)
-    self->gbm = gbm_create_device (compositor->drm_fd);
+#if defined(CLUTTER_WINDOWING_EGL)
+  if (clutter_check_windowing_backend (CLUTTER_WINDOWING_EGL))
+    {
+      CoglRenderer *cogl_renderer = cogl_display_get_renderer (cogl_context_get_display (ctx));
+      self->drm_fd = cogl_kms_renderer_get_kms_fd (cogl_renderer);
+      self->gbm = gbm_create_device (self->drm_fd);
+    }
+#endif

  monitors = meta_monitor_manager_get ();
  g_signal_connect_object (monitors, "monitors-changed",
@@ -582,17 +615,27 @@ meta_cursor_tracker_get_for_screen (MetaScreen *screen)
  if (screen->cursor_tracker)
    return screen->cursor_tracker;

-#ifdef HAVE_WAYLAND
  if (meta_is_wayland_compositor ())
    self = make_wayland_cursor_tracker (screen);
  else
-#endif
    self = make_x11_cursor_tracker (screen);

  screen->cursor_tracker = self;
  return self;
 }

+static void
+set_window_cursor (MetaCursorTracker   *tracker,
+                   gboolean             has_cursor,
+                   MetaCursorReference *cursor)
+{
+  g_clear_pointer (&tracker->window_cursor, meta_cursor_reference_unref);
+  if (cursor)
+    tracker->window_cursor = meta_cursor_reference_ref (cursor);
+  tracker->has_window_cursor = has_cursor;
+  sync_cursor (tracker);
+}
+
 gboolean
 meta_cursor_tracker_handle_xevent (MetaCursorTracker *tracker,
                                   XEvent            *xevent)
@@ -609,8 +652,7 @@ meta_cursor_tracker_handle_xevent (MetaCursorTracker *tracker,
  if (notify_event->subtype != XFixesDisplayCursorNotify)
    return FALSE;

-  g_clear_pointer (&tracker->sprite, meta_cursor_reference_unref);
-  g_signal_emit (tracker, signals[CURSOR_CHANGED], 0);
+  set_window_cursor (tracker, FALSE, NULL);

  return TRUE;
 }
@@ -624,7 +666,7 @@ ensure_xfixes_cursor (MetaCursorTracker *tracker)
  gboolean free_cursor_data;
  CoglContext *ctx;

-  if (tracker->sprite)
+  if (tracker->has_window_cursor)
    return;

  cursor_image = XFixesGetCursorImage (tracker->screen->display->xdisplay);
@@ -662,7 +704,6 @@ ensure_xfixes_cursor (MetaCursorTracker *tracker)
                                          cursor_image->width,
                                          cursor_image->height,
                                          CLUTTER_CAIRO_FORMAT_ARGB32,
-                                          COGL_PIXEL_FORMAT_ANY,
                                          cursor_image->width * 4, /* stride */
                                          cursor_data,
                                          NULL);
@@ -672,9 +713,11 @@ ensure_xfixes_cursor (MetaCursorTracker *tracker)

  if (sprite != NULL)
    {
-      tracker->sprite = meta_cursor_reference_take_texture (sprite);
-      tracker->sprite->hot_x = cursor_image->xhot;
-      tracker->sprite->hot_y = cursor_image->yhot;
+      MetaCursorReference *cursor = meta_cursor_reference_take_texture (sprite);
+      cursor->hot_x = cursor_image->xhot;
+      cursor->hot_y = cursor_image->yhot;
+
+      set_window_cursor (tracker, TRUE, cursor);
    }
  XFree (cursor_image);
 }
@@ -692,8 +735,8 @@ meta_cursor_tracker_get_sprite (MetaCursorTracker *tracker)
  if (!meta_is_wayland_compositor ())
    ensure_xfixes_cursor (tracker);

-  if (tracker->sprite)
-    return COGL_TEXTURE (tracker->sprite->texture);
+  if (tracker->displayed_cursor)
+    return COGL_TEXTURE (tracker->displayed_cursor->texture);
  else
    return NULL;
 }
@@ -715,12 +758,13 @@ meta_cursor_tracker_get_hot (MetaCursorTracker *tracker,
  if (!meta_is_wayland_compositor ())
    ensure_xfixes_cursor (tracker);

-  if (tracker->sprite)
+  if (tracker->displayed_cursor)
    {
+      MetaCursorReference *displayed_cursor = tracker->displayed_cursor;
      if (x)
-        *x = tracker->sprite->hot_x;
+        *x = displayed_cursor->hot_x;
      if (y)
-        *y = tracker->sprite->hot_y;
+        *y = displayed_cursor->hot_y;
    }
  else
    {
@@ -735,14 +779,46 @@ static MetaCursorReference *
 ensure_wayland_cursor (MetaCursorTracker *tracker,
                       MetaCursor         cursor)
 {
-  if (tracker->default_cursors[cursor])
-    return tracker->default_cursors[cursor];
-
-  tracker->default_cursors[cursor] = meta_cursor_reference_from_theme (tracker, cursor);
  if (!tracker->default_cursors[cursor])
-    meta_warning ("Failed to load cursor from theme\n");
+    {
+      tracker->default_cursors[cursor] = meta_cursor_reference_from_theme (tracker, cursor);
+      if (!tracker->default_cursors[cursor])
+        meta_warning ("Failed to load cursor from theme\n");
+    }

-  return tracker->default_cursors[cursor];
+  return meta_cursor_reference_ref (tracker->default_cursors[cursor]);
+}
+
+void
+meta_cursor_tracker_set_grab_cursor (MetaCursorTracker *tracker,
+                                     MetaCursor         cursor)
+{
+  g_clear_pointer (&tracker->grab_cursor, meta_cursor_reference_unref);
+  if (cursor != META_CURSOR_DEFAULT)
+    tracker->grab_cursor = ensure_wayland_cursor (tracker, cursor);
+  sync_cursor (tracker);
+}
+
+void
+meta_cursor_tracker_set_window_cursor (MetaCursorTracker  *tracker,
+                                       struct wl_resource *buffer,
+                                       int                 hot_x,
+                                       int                 hot_y)
+{
+  MetaCursorReference *cursor;
+
+  if (buffer)
+    cursor = meta_cursor_reference_from_buffer (tracker, buffer, hot_x, hot_y);
+  else
+    cursor = NULL;
+
+  set_window_cursor (tracker, TRUE, cursor);
+}
+
+void
+meta_cursor_tracker_unset_window_cursor (MetaCursorTracker *tracker)
+{
+  set_window_cursor (tracker, FALSE, NULL);
 }

 void
@@ -762,21 +838,12 @@ meta_cursor_tracker_set_root_cursor (MetaCursorTracker *tracker,
  /* Now update the real root cursor */
  if (meta_is_wayland_compositor ())
    {
-      MetaCursorReference *ref;
-
-      ref = ensure_wayland_cursor (tracker, cursor);
-
      g_clear_pointer (&tracker->root_cursor, meta_cursor_reference_unref);
-      tracker->root_cursor = meta_cursor_reference_ref (ref);
+      tracker->root_cursor = ensure_wayland_cursor (tracker, cursor);
+      sync_cursor (tracker);
    }
 }

-void
-meta_cursor_tracker_revert_root (MetaCursorTracker *tracker)
-{
-  meta_cursor_tracker_set_sprite (tracker, tracker->root_cursor);
-}
-
 static void
 update_hw_cursor (MetaCursorTracker *tracker)
 {
@@ -785,7 +852,7 @@ update_hw_cursor (MetaCursorTracker *tracker)
  unsigned int i, n_crtcs;
  gboolean enabled;

-  enabled = tracker->has_cursor && tracker->sprite->bo != NULL;
+  enabled = tracker->displayed_cursor && tracker->displayed_cursor->bo != NULL;
  tracker->has_hw_cursor = enabled;

  monitors = meta_monitor_manager_get ();
@@ -831,105 +898,51 @@ move_hw_cursor (MetaCursorTracker *tracker)
    }
 }

-void
-meta_cursor_tracker_set_buffer (MetaCursorTracker  *tracker,
-                                struct wl_resource *buffer,
-                                int                 hot_x,
-                                int                 hot_y)
+static MetaCursorReference *
+get_displayed_cursor (MetaCursorTracker *tracker)
 {
-  MetaCursorReference *new_cursor;
+  if (!tracker->is_showing)
+    return NULL;

-  if (buffer)
-    {
-      new_cursor = meta_cursor_reference_from_buffer (tracker, buffer, hot_x, hot_y);
-      meta_cursor_tracker_set_sprite (tracker, new_cursor);
-      meta_cursor_reference_unref (new_cursor);
-    }
-  else
-    meta_cursor_tracker_set_sprite (tracker, NULL);
+  if (tracker->grab_cursor)
+    return tracker->grab_cursor;
+
+  if (tracker->has_window_cursor)
+    return tracker->window_cursor;
+
+  return tracker->root_cursor;
 }

 static void
-meta_cursor_tracker_set_sprite (MetaCursorTracker   *tracker,
-                                MetaCursorReference *sprite)
+sync_displayed_cursor (MetaCursorTracker *tracker)
 {
-  g_assert (meta_is_wayland_compositor ());
+  MetaCursorReference *displayed_cursor = get_displayed_cursor (tracker);

-  if (sprite == tracker->sprite)
+  if (tracker->displayed_cursor == displayed_cursor)
    return;

-  g_clear_pointer (&tracker->sprite, meta_cursor_reference_unref);
+  g_clear_pointer (&tracker->displayed_cursor, meta_cursor_reference_unref);
+  if (displayed_cursor)
+    tracker->displayed_cursor = meta_cursor_reference_ref (displayed_cursor);

-  if (sprite)
+  if (meta_is_wayland_compositor ())
    {
-      tracker->sprite = meta_cursor_reference_ref (sprite);
-      cogl_pipeline_set_layer_texture (tracker->pipeline, 0, COGL_TEXTURE (tracker->sprite->texture));
-    }
-  else
-    cogl_pipeline_set_layer_texture (tracker->pipeline, 0, NULL);
+      if (displayed_cursor)
+        cogl_pipeline_set_layer_texture (tracker->pipeline, 0, COGL_TEXTURE (displayed_cursor->texture));
+      else
+        cogl_pipeline_set_layer_texture (tracker->pipeline, 0, NULL);

-  tracker->has_cursor = tracker->sprite != NULL && tracker->is_showing;
-  update_hw_cursor (tracker);
+      update_hw_cursor (tracker);
+    }

  g_signal_emit (tracker, signals[CURSOR_CHANGED], 0);
-
-  meta_cursor_tracker_update_position (tracker, tracker->current_x, tracker->current_y);
 }

-void
-meta_cursor_tracker_update_position (MetaCursorTracker *tracker,
-                                     int                new_x,
-                                     int                new_y)
-{
-  g_assert (meta_is_wayland_compositor ());
-
-  tracker->current_x = new_x;
-  tracker->current_y = new_y;
-
-  if (tracker->sprite)
-    {
-      tracker->current_rect.x = tracker->current_x - tracker->sprite->hot_x;
-      tracker->current_rect.y = tracker->current_y - tracker->sprite->hot_y;
-      tracker->current_rect.width = cogl_texture_get_width (COGL_TEXTURE (tracker->sprite->texture));
-      tracker->current_rect.height = cogl_texture_get_height (COGL_TEXTURE (tracker->sprite->texture));
-    }
-  else
-    {
-      tracker->current_rect.x = 0;
-      tracker->current_rect.y = 0;
-      tracker->current_rect.width = 0;
-      tracker->current_rect.height = 0;
-    }
-
-  if (tracker->has_hw_cursor)
-    move_hw_cursor (tracker);
-}
-
-void
-meta_cursor_tracker_paint (MetaCursorTracker *tracker)
-{
-  g_assert (meta_is_wayland_compositor ());
-
-  if (tracker->has_hw_cursor || !tracker->has_cursor)
-    return;
-
-  cogl_framebuffer_draw_rectangle (cogl_get_draw_framebuffer (),
-                                   tracker->pipeline,
-                                   tracker->current_rect.x,
-                                   tracker->current_rect.y,
-                                   tracker->current_rect.x +
-                                   tracker->current_rect.width,
-                                   tracker->current_rect.y +
-                                   tracker->current_rect.height);
-
-  tracker->previous_rect = tracker->current_rect;
-  tracker->previous_is_valid = TRUE;
-}
-
-void
-meta_cursor_tracker_queue_redraw (MetaCursorTracker *tracker,
-                                  ClutterActor      *stage)
+static void
+meta_cursor_tracker_queue_redraw (MetaCursorTracker *tracker)
 {
+  MetaWaylandCompositor *compositor = meta_wayland_compositor_get_default ();
+  ClutterActor *stage = compositor->stage;
  cairo_rectangle_int_t clip;

  g_assert (meta_is_wayland_compositor ());
@@ -946,7 +959,7 @@ meta_cursor_tracker_queue_redraw (MetaCursorTracker *tracker,
      tracker->previous_is_valid = FALSE;
    }

-  if (tracker->has_hw_cursor || !tracker->has_cursor)
+  if (tracker->has_hw_cursor || !tracker->displayed_cursor)
    return;

  clip.x = tracker->current_rect.x;
@@ -956,6 +969,72 @@ meta_cursor_tracker_queue_redraw (MetaCursorTracker *tracker,
  clutter_actor_queue_redraw_with_clip (stage, &clip);
 }

+static void
+sync_cursor (MetaCursorTracker *tracker)
+{
+  MetaCursorReference *displayed_cursor;
+
+  sync_displayed_cursor (tracker);
+  displayed_cursor = tracker->displayed_cursor;
+
+  if (displayed_cursor)
+    {
+      tracker->current_rect.x = tracker->current_x - displayed_cursor->hot_x;
+      tracker->current_rect.y = tracker->current_y - displayed_cursor->hot_y;
+      tracker->current_rect.width = cogl_texture_get_width (COGL_TEXTURE (displayed_cursor->texture));
+      tracker->current_rect.height = cogl_texture_get_height (COGL_TEXTURE (displayed_cursor->texture));
+    }
+  else
+    {
+      tracker->current_rect.x = 0;
+      tracker->current_rect.y = 0;
+      tracker->current_rect.width = 0;
+      tracker->current_rect.height = 0;
+    }
+
+  if (meta_is_wayland_compositor ())
+    {
+      if (tracker->has_hw_cursor)
+        move_hw_cursor (tracker);
+      else
+        meta_cursor_tracker_queue_redraw (tracker);
+    }
+}
+
+void
+meta_cursor_tracker_update_position (MetaCursorTracker *tracker,
+                                     int                new_x,
+                                     int                new_y)
+{
+  g_assert (meta_is_wayland_compositor ());
+
+  tracker->current_x = new_x;
+  tracker->current_y = new_y;
+
+  sync_cursor (tracker);
+}
+
+void
+meta_cursor_tracker_paint (MetaCursorTracker *tracker)
+{
+  g_assert (meta_is_wayland_compositor ());
+
+  if (tracker->has_hw_cursor || !tracker->displayed_cursor)
+    return;
+
+  cogl_framebuffer_draw_rectangle (cogl_get_draw_framebuffer (),
+                                   tracker->pipeline,
+                                   tracker->current_rect.x,
+                                   tracker->current_rect.y,
+                                   tracker->current_rect.x +
+                                   tracker->current_rect.width,
+                                   tracker->current_rect.y +
+                                   tracker->current_rect.height);
+
+  tracker->previous_rect = tracker->current_rect;
+  tracker->previous_is_valid = TRUE;
+}
+
 static void
 meta_cursor_tracker_set_crtc_has_hw_cursor (MetaCursorTracker *tracker,
                                            MetaCRTC          *crtc,
@@ -963,15 +1042,16 @@ meta_cursor_tracker_set_crtc_has_hw_cursor (MetaCursorTracker *tracker,
 {
  if (has)
    {
+      MetaCursorReference *displayed_cursor = tracker->displayed_cursor;
      union gbm_bo_handle handle;
      int width, height;
      int hot_x, hot_y;

-      handle = gbm_bo_get_handle (tracker->sprite->bo);
-      width = gbm_bo_get_width (tracker->sprite->bo);
-      height = gbm_bo_get_height (tracker->sprite->bo);
-      hot_x = tracker->sprite->hot_x;
-      hot_y = tracker->sprite->hot_y;
+      handle = gbm_bo_get_handle (displayed_cursor->bo);
+      width = gbm_bo_get_width (displayed_cursor->bo);
+      height = gbm_bo_get_height (displayed_cursor->bo);
+      hot_x = displayed_cursor->hot_x;
+      hot_y = displayed_cursor->hot_y;

      drmModeSetCursor2 (tracker->drm_fd, crtc->crtc_id, handle.u32,
                         width, height, hot_x, hot_y);
@@ -1047,13 +1127,7 @@ meta_cursor_tracker_set_pointer_visible (MetaCursorTracker *tracker,

  if (meta_is_wayland_compositor ())
    {
-      MetaWaylandCompositor *compositor;
-
-      compositor = meta_wayland_compositor_get_default ();
-
-      tracker->has_cursor = tracker->sprite != NULL && visible;
-      update_hw_cursor (tracker);
-      meta_cursor_tracker_queue_redraw (tracker, compositor->stage);
+      sync_cursor (tracker);
    }
  else
    {
--- a/src/core/meta-idle-monitor-private.h
+++ b/src/core/meta-idle-monitor-private.h
@@ -14,9 +14,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 *
 * Adapted from gnome-session/gnome-session/gs-idle-monitor.c and
 *         from gnome-desktop/libgnome-desktop/gnome-idle-monitor.c
--- a/src/core/meta-idle-monitor.c
+++ b/src/core/meta-idle-monitor.c
@@ -14,9 +14,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 *
 * Adapted from gnome-session/gnome-session/gs-idle-monitor.c and
 *         from gnome-desktop/libgnome-desktop/gnome-idle-monitor.c
@@ -293,6 +291,7 @@ idle_monitor_watch_free (MetaIdleMonitorWatch *watch)
    return;

  monitor = watch->monitor;
+  g_object_ref (monitor);

  if (watch->idle_source_id)
    {
@@ -313,6 +312,7 @@ idle_monitor_watch_free (MetaIdleMonitorWatch *watch)
  if (watch->timeout_source != NULL)
    g_source_destroy (watch->timeout_source);

+  g_object_unref (monitor);
  g_slice_free (MetaIdleMonitorWatch, watch);
 }

@@ -535,7 +535,7 @@ make_watch (MetaIdleMonitor           *monitor,
          watch->timeout_source = source;
        }
    }
-  else
+  else if (monitor->user_active_alarm != None)
    {
      if (timeout_msec != 0)
        {
@@ -653,8 +653,10 @@ meta_idle_monitor_remove_watch (MetaIdleMonitor *monitor,
 {
  g_return_if_fail (META_IS_IDLE_MONITOR (monitor));

+  g_object_ref (monitor);
  g_hash_table_remove (monitor->watches,
                       GUINT_TO_POINTER (id));
+  g_object_unref (monitor);
 }

 /**
@@ -947,6 +949,8 @@ on_bus_acquired (GDBusConnection *connection,
  for (iter = devices; iter; iter = iter->next)
    on_device_added (device_manager, iter->data, manager);

+  g_slist_free (devices);
+
  g_signal_connect_object (device_manager, "device-added",
                           G_CALLBACK (on_device_added), manager, 0);
  g_signal_connect_object (device_manager, "device-removed",
--- a/src/core/meta-xrandr-shared.h
+++ b/src/core/meta-xrandr-shared.h
@@ -13,9 +13,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 /* This file is shared between mutter (src/core/meta-xrandr-shared.h)
--- a/src/core/monitor-config.c
+++ b/src/core/monitor-config.c
@@ -20,9 +20,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 /*
@@ -99,8 +97,9 @@ static gboolean meta_monitor_config_assign_crtcs (MetaConfiguration  *config,
                                                  GPtrArray          *crtcs,
                                                  GPtrArray          *outputs);

-static void     power_client_changed_cb (UpClient *client,
-                                         gpointer  user_data);
+static void     power_client_changed_cb (UpClient   *client,
+                                         GParamSpec *pspec,
+                                         gpointer    user_data);

 static void
 free_output_key (MetaOutputKey *key)
@@ -232,7 +231,7 @@ meta_monitor_config_init (MetaMonitorConfig *self)
  self->up_client = up_client_new ();
  self->lid_is_closed = up_client_get_lid_is_closed (self->up_client);

-  g_signal_connect_object (self->up_client, "changed",
+  g_signal_connect_object (self->up_client, "notify::lid-is-closed",
                           G_CALLBACK (power_client_changed_cb), self, 0);
 }

@@ -816,6 +815,22 @@ meta_monitor_config_match_current (MetaMonitorConfig  *self,
  return ok;
 }

+gboolean
+meta_monitor_manager_has_hotplug_mode_update (MetaMonitorManager *manager)
+{
+  MetaOutput *outputs;
+  unsigned n_outputs;
+  unsigned int i;
+
+  outputs = meta_monitor_manager_get_outputs (manager, &n_outputs);
+
+  for (i = 0; i < n_outputs; i++)
+    if (outputs[i].hotplug_mode_update)
+      return TRUE;
+
+  return FALSE;
+}
+
 static MetaConfiguration *
 meta_monitor_config_get_stored (MetaMonitorConfig *self,
 				MetaOutput        *outputs,
@@ -1335,8 +1350,9 @@ turn_off_laptop_display (MetaMonitorConfig  *self,
 }

 static void
-power_client_changed_cb (UpClient *client,
-                         gpointer  user_data)
+power_client_changed_cb (UpClient   *client,
+                         GParamSpec *pspec,
+                         gpointer    user_data)
 {
  MetaMonitorManager *manager = meta_monitor_manager_get ();
  MetaMonitorConfig *self = user_data;
--- a/src/core/monitor-kms.c
+++ b/src/core/monitor-kms.c
@@ -111,8 +111,7 @@ make_output_name (drmModeConnector *connector)
  };
  const char *connector_type_name;

-  if (connector->connector_type >= 0 &&
-      connector->connector_type < G_N_ELEMENTS (connector_type_names))
+  if (connector->connector_type < G_N_ELEMENTS (connector_type_names))
    connector_type_name = connector_type_names[connector->connector_type];
  else
    connector_type_name = "unknown";
@@ -651,7 +650,7 @@ meta_monitor_manager_kms_set_power_save_mode (MetaMonitorManager *manager,
    state = DRM_MODE_DPMS_SUSPEND;
    break;
  case META_POWER_SAVE_OFF:
-    state = DRM_MODE_DPMS_SUSPEND;
+    state = DRM_MODE_DPMS_OFF;
    break;
  default:
    return;
--- a/src/core/monitor-private.h
+++ b/src/core/monitor-private.h
@@ -29,9 +29,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef META_MONITOR_PRIVATE_H
@@ -44,9 +42,7 @@
 #include <meta/screen.h>
 #include "stack-tracker.h"
 #include "ui.h"
-#ifdef HAVE_WAYLAND
 #include <wayland-server.h>
-#endif
 #include "meta-xrandr-shared.h"

 #include "meta-dbus-xrandr.h"
@@ -56,19 +52,6 @@ typedef struct _MetaMonitorManager         MetaMonitorManager;
 typedef struct _MetaMonitorConfigClass    MetaMonitorConfigClass;
 typedef struct _MetaMonitorConfig         MetaMonitorConfig;

-#ifndef HAVE_WAYLAND
-enum wl_output_transform {
-  WL_OUTPUT_TRANSFORM_NORMAL,
-  WL_OUTPUT_TRANSFORM_90,
-  WL_OUTPUT_TRANSFORM_180,
-  WL_OUTPUT_TRANSFORM_270,
-  WL_OUTPUT_TRANSFORM_FLIPPED,
-  WL_OUTPUT_TRANSFORM_FLIPPED_90,
-  WL_OUTPUT_TRANSFORM_FLIPPED_180,
-  WL_OUTPUT_TRANSFORM_FLIPPED_270
-};
-#endif
-
 typedef struct _MetaOutput MetaOutput;
 typedef struct _MetaCRTC MetaCRTC;
 typedef struct _MetaMonitorMode MetaMonitorMode;
@@ -119,6 +102,9 @@ struct _MetaOutput

  gpointer driver_private;
  GDestroyNotify driver_notify;
+
+  /* get a new preferred mode on hotplug events, to handle dynamic guest resizing */
+  gboolean hotplug_mode_update;
 };

 struct _MetaCRTC
@@ -407,6 +393,7 @@ void               meta_monitor_manager_free_output_array (MetaOutput *old_outpu
                                                           int         n_old_outputs);
 void               meta_monitor_manager_free_mode_array (MetaMonitorMode *old_modes,
                                                         int              n_old_modes);
+gboolean           meta_monitor_manager_has_hotplug_mode_update (MetaMonitorManager *manager);

 /* Returns true if transform causes width and height to be inverted
   This is true for the odd transforms in the enum */
--- a/src/core/monitor-xrandr.c
+++ b/src/core/monitor-xrandr.c
@@ -20,9 +20,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #include "config.h"
@@ -311,6 +309,29 @@ read_output_edid (MetaMonitorManagerXrandr *manager_xrandr,
  return NULL;
 }

+static gboolean
+output_get_hotplug_mode_update (MetaMonitorManagerXrandr *manager_xrandr,
+                                XID                       output_id)
+{
+  MetaDisplay *display = meta_get_display ();
+  XRRPropertyInfo *info;
+  gboolean result = FALSE;
+
+  meta_error_trap_push (display);
+  info = XRRQueryOutputProperty (manager_xrandr->xdisplay, output_id,
+                                 display->atom_hotplug_mode_update);
+  meta_error_trap_pop (display);
+
+  if (info)
+    {
+      result = TRUE;
+      XFree (info);
+    }
+
+  return result;
+}
+
+
 static void
 meta_monitor_manager_xrandr_read_current (MetaMonitorManager *manager)
 {
@@ -430,8 +451,10 @@ meta_monitor_manager_xrandr_read_current (MetaMonitorManager *manager)
      XRRFreeCrtcInfo (crtc);
    }

+  meta_error_trap_push (meta_get_display ());
  primary_output = XRRGetOutputPrimary (manager_xrandr->xdisplay,
 					DefaultRootWindow (manager_xrandr->xdisplay));
+  meta_error_trap_pop (meta_get_display ());

  n_actual_outputs = 0;
  for (i = 0; i < (unsigned)resources->noutput; i++)
@@ -484,6 +507,8 @@ meta_monitor_manager_xrandr_read_current (MetaMonitorManager *manager)
 	  meta_output->width_mm = output->mm_width;
 	  meta_output->height_mm = output->mm_height;
 	  meta_output->subpixel_order = COGL_SUBPIXEL_ORDER_UNKNOWN;
+          meta_output->hotplug_mode_update =
+              output_get_hotplug_mode_update (manager_xrandr, meta_output->output_id);

 	  meta_output->n_modes = output->nmode;
 	  meta_output->modes = g_new0 (MetaMonitorMode *, meta_output->n_modes);
@@ -666,10 +691,11 @@ meta_monitor_manager_xrandr_apply_configuration (MetaMonitorManager *manager,
 						 unsigned int         n_outputs)
 {
  MetaMonitorManagerXrandr *manager_xrandr = META_MONITOR_MANAGER_XRANDR (manager);
+  MetaDisplay *display = meta_get_display ();
  unsigned i;
  int width, height, width_mm, height_mm;

-  meta_display_grab (meta_get_display ());
+  meta_display_grab (display);

  /* First compute the new size of the screen (framebuffer) */
  width = 0; height = 0;
@@ -763,10 +789,10 @@ meta_monitor_manager_xrandr_apply_configuration (MetaMonitorManager *manager,
   */
  width_mm = (width / DPI_FALLBACK) * 25.4 + 0.5;
  height_mm = (height / DPI_FALLBACK) * 25.4 + 0.5;
-  meta_error_trap_push (meta_get_display ());
+  meta_error_trap_push (display);
  XRRSetScreenSize (manager_xrandr->xdisplay, DefaultRootWindow (manager_xrandr->xdisplay),
                    width, height, width_mm, height_mm);
-  meta_error_trap_pop (meta_get_display ());
+  meta_error_trap_pop (display);

  for (i = 0; i < n_crtcs; i++)
    {
@@ -823,7 +849,7 @@ meta_monitor_manager_xrandr_apply_configuration (MetaMonitorManager *manager,
              goto next;
            }

-          meta_error_trap_push (meta_get_display ());
+          meta_error_trap_push (display);
          ok = XRRSetCrtcConfig (manager_xrandr->xdisplay,
                                 manager_xrandr->resources,
                                 (XID)crtc->crtc_id,
@@ -832,7 +858,7 @@ meta_monitor_manager_xrandr_apply_configuration (MetaMonitorManager *manager,
                                 (XID)mode->mode_id,
                                 wl_transform_to_xrandr (crtc_info->transform),
                                 outputs, n_outputs);
-          meta_error_trap_pop (meta_get_display ());
+          meta_error_trap_pop (display);

          if (ok != Success)
            {
@@ -873,9 +899,11 @@ meta_monitor_manager_xrandr_apply_configuration (MetaMonitorManager *manager,

      if (output_info->is_primary)
        {
+          meta_error_trap_push (display);
          XRRSetOutputPrimary (manager_xrandr->xdisplay,
                               DefaultRootWindow (manager_xrandr->xdisplay),
                               (XID)output_info->output->output_id);
+          meta_error_trap_pop (display);
        }

      output_set_presentation_xrandr (manager_xrandr,
@@ -901,7 +929,7 @@ meta_monitor_manager_xrandr_apply_configuration (MetaMonitorManager *manager,
      output->is_primary = FALSE;
    }

-  meta_display_ungrab (meta_get_display ());
+  meta_display_ungrab (display);
 }

 static void
@@ -969,6 +997,16 @@ meta_monitor_manager_xrandr_set_crtc_gamma (MetaMonitorManager *manager,
  XRRFreeGamma (gamma);
 }

+static void
+meta_monitor_manager_xrandr_rebuild_derived (MetaMonitorManager *manager)
+{
+  /* This will be a no-op if the change was from our side, as
+     we already called it in the DBus method handler */
+  meta_monitor_config_update_current (manager->config, manager);
+
+  meta_monitor_manager_rebuild_derived (manager);
+}
+
 static gboolean
 meta_monitor_manager_xrandr_handle_xevent (MetaMonitorManager *manager,
 					   XEvent             *event)
@@ -978,6 +1016,7 @@ meta_monitor_manager_xrandr_handle_xevent (MetaMonitorManager *manager,
  MetaCRTC *old_crtcs;
  MetaMonitorMode *old_modes;
  unsigned int n_old_outputs, n_old_modes;
+  gboolean new_config;

  if ((event->type - manager_xrandr->rr_event_base) != RRScreenChangeNotify)
    return FALSE;
@@ -994,31 +1033,36 @@ meta_monitor_manager_xrandr_handle_xevent (MetaMonitorManager *manager,
  manager->serial++;
  meta_monitor_manager_xrandr_read_current (manager);

-  /* Check if the current intended configuration has the same outputs
-     as the new real one, or if the event is a result of an XRandR call.
-     If so, we can go straight to rebuild the logical config and tell
-     the outside world.
-     Otherwise, this event was caused by hotplug, so give a chance to
-     MetaMonitorConfig.
+  new_config = manager_xrandr->resources->timestamp >=
+    manager_xrandr->resources->configTimestamp;
+  if (meta_monitor_manager_has_hotplug_mode_update (manager))

-     Note that we need to check both the timestamps and the list of
-     outputs, because the X server might emit spurious events with
-     new configTimestamps (bug 702804), and the driver may have
-     changed the EDID for some other reason (old broken qxl and vbox
-     drivers...).
-  */
-  if (manager_xrandr->resources->timestamp >= manager_xrandr->resources->configTimestamp ||
-      meta_monitor_config_match_current (manager->config, manager))
    {
-      /* This will be a no-op if the change was from our side, as
-         we already called it in the DBus method handler */
-      meta_monitor_config_update_current (manager->config, manager);
-
-      meta_monitor_manager_rebuild_derived (manager);
+      /* Check if the current intended configuration is a result of an
+         XRandR call.  Otherwise, hotplug_mode_update tells us to get
+         a new preferred mode on hotplug events to handle dynamic
+         guest resizing. */
+      if (new_config)
+        meta_monitor_manager_xrandr_rebuild_derived (manager);
+      else
+        meta_monitor_config_make_default (manager->config, manager);
    }
  else
    {
-      if (!meta_monitor_config_apply_stored (manager->config, manager))
+      /* Check if the current intended configuration has the same outputs
+         as the new real one, or if the event is a result of an XRandR call.
+         If so, we can go straight to rebuild the logical config and tell
+         the outside world.
+         Otherwise, this event was caused by hotplug, so give a chance to
+         MetaMonitorConfig.
+
+         Note that we need to check both the timestamps and the list of
+         outputs, because the X server might emit spurious events with new
+         configTimestamps (bug 702804), and the driver may have changed
+         the EDID for some other reason (old qxl and vbox drivers). */
+      if (new_config || meta_monitor_config_match_current (manager->config, manager))
+        meta_monitor_manager_xrandr_rebuild_derived (manager);
+      else if (!meta_monitor_config_apply_stored (manager->config, manager))
        meta_monitor_config_make_default (manager->config, manager);
    }

--- a/src/core/monitor.c
+++ b/src/core/monitor.c
@@ -20,9 +20,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #include "config.h"
@@ -36,7 +34,6 @@
 #include "util-private.h"
 #include <meta/errors.h>
 #include "monitor-private.h"
-#include "meta-wayland-private.h"

 #include "meta-dbus-xrandr.h"

@@ -290,7 +287,7 @@ make_logical_config (MetaMonitorManager *manager)

      for (j = 0; j < monitor_infos->len; j++)
        {
-          MetaMonitorInfo *info = &g_array_index (monitor_infos, MetaMonitorInfo, i);
+          MetaMonitorInfo *info = &g_array_index (monitor_infos, MetaMonitorInfo, j);
          if (meta_rectangle_equal (&crtc->rect,
                                    &info->rect))
            {
@@ -358,19 +355,35 @@ make_logical_config (MetaMonitorManager *manager)
 static GType
 get_default_backend (void)
 {
-  if (meta_is_wayland_compositor ())
+#if defined(CLUTTER_WINDOWING_EGL)
+  if (clutter_check_windowing_backend (CLUTTER_WINDOWING_EGL))
+    return META_TYPE_MONITOR_MANAGER_KMS;
+#endif
+
+#if defined(CLUTTER_WINDOWING_X11)
+  if (clutter_check_windowing_backend (CLUTTER_WINDOWING_X11))
    {
-      MetaWaylandCompositor *compositor;
-
-      compositor = meta_wayland_compositor_get_default ();
-
-      if (meta_wayland_compositor_is_native (compositor))
-        return META_TYPE_MONITOR_MANAGER_KMS;
-      else
+      /* If we're a Wayland compositor using the X11 backend,
+       * we're a nested configuration, so return the dummy
+       * monitor setup. */
+      if (meta_is_wayland_compositor ())
        return META_TYPE_MONITOR_MANAGER;
+      else
+        return META_TYPE_MONITOR_MANAGER_XRANDR;
    }
-  else
-    return META_TYPE_MONITOR_MANAGER_XRANDR;
+#endif
+
+#if defined(CLUTTER_WINDOWING_WAYLAND)
+  if (clutter_check_windowing_backend (CLUTTER_WINDOWING_WAYLAND))
+    {
+      /* Use the dummy implementation on Wayland for now.
+       * In the future, we should support wl_fullscreen_output
+       * which will have CRTC management in the protocol. */
+      return META_TYPE_MONITOR_MANAGER;
+    }
+#endif
+
+  g_assert_not_reached ();
 }

 static MetaMonitorManager *
@@ -614,46 +627,60 @@ static char *
 make_display_name (MetaMonitorManager *manager,
                   MetaOutput         *output)
 {
+  char *inches = NULL;
+  char *vendor_name = NULL;
+  char *ret;
+
  if (g_str_has_prefix (output->name, "LVDS") ||
      g_str_has_prefix (output->name, "eDP"))
-    return g_strdup (_("Built-in display"));
+    {
+      ret = g_strdup (_("Built-in display"));
+      goto out;
+    }

-  if (output->width_mm != -1 && output->height_mm != -1)
+  if (output->width_mm > 0 && output->height_mm > 0)
    {
      double d = sqrt (output->width_mm * output->width_mm +
                       output->height_mm * output->height_mm);
-      char *inches = diagonal_to_str (d / 25.4);
-      char *vendor_name;
-      char *ret;
+      inches = diagonal_to_str (d / 25.4);
+    }

-      if (g_strcmp0 (output->vendor, "unknown") != 0)
-        {
-          if (!manager->pnp_ids)
-            manager->pnp_ids = gnome_pnp_ids_new ();
+  if (g_strcmp0 (output->vendor, "unknown") != 0)
+    {
+      if (!manager->pnp_ids)
+        manager->pnp_ids = gnome_pnp_ids_new ();

-          vendor_name = gnome_pnp_ids_get_pnp_id (manager->pnp_ids,
-                                                  output->vendor);
+      vendor_name = gnome_pnp_ids_get_pnp_id (manager->pnp_ids,
+                                              output->vendor);

-          ret = g_strdup_printf ("%s %s", vendor_name, inches);
-
-          g_free (vendor_name);
-        }
-      else
-        {
-          /* TRANSLATORS: this is a monitor name (in case we don't know
-             the vendor), it's Unknown followed by a size in inches,
-             like 'Unknown 15"'
-          */
-          ret = g_strdup_printf (_("Unknown %s"), inches);
-        }
-
-      g_free (inches);
-      return ret;
+      if (!vendor_name)
+        vendor_name = g_strdup (output->vendor);
    }
  else
    {
-      return g_strdup (output->vendor);
+      if (inches != NULL)
+        vendor_name = g_strdup (_("Unknown"));
+      else
+        vendor_name = g_strdup (_("Unknown Display"));
    }
+
+  if (inches != NULL)
+    {
+      /* TRANSLATORS: this is a monitor vendor name, followed by a
+       * size in inches, like 'Dell 15"'
+       */
+      ret = g_strdup_printf (_("%s %s"), vendor_name, inches);
+    }
+  else
+    {
+      ret = g_strdup (vendor_name);
+    }
+
+ out:
+  g_free (inches);
+  g_free (vendor_name);
+
+  return ret;
 }

 static gboolean
@@ -729,6 +756,9 @@ meta_monitor_manager_handle_get_resources (MetaDBusDisplayConfig *skeleton,
                             g_variant_new_take_string (make_display_name (manager, output)));
      g_variant_builder_add (&properties, "{sv}", "backlight",
                             g_variant_new_int32 (output->backlight));
+      g_variant_builder_add (&properties, "{sv}", "min-backlight-step",
+                             g_variant_new_int32 ((output->backlight_max - output->backlight_min) ?
+                                                  100 / (output->backlight_max - output->backlight_min) : -1));
      g_variant_builder_add (&properties, "{sv}", "primary",
                             g_variant_new_boolean (output->is_primary));
      g_variant_builder_add (&properties, "{sv}", "presentation",
--- a/src/core/mutter.c
+++ b/src/core/mutter.c
@@ -14,9 +14,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #include "config.h"
--- a/src/core/place.c
+++ b/src/core/place.c
@@ -19,9 +19,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #include <config.h>
@@ -47,34 +45,18 @@ northwestcmp (gconstpointer a, gconstpointer b)
 {
  MetaWindow *aw = (gpointer) a;
  MetaWindow *bw = (gpointer) b;
+  MetaRectangle a_frame;
+  MetaRectangle b_frame;
  int from_origin_a;
  int from_origin_b;
  int ax, ay, bx, by;

-  /* we're interested in the frame position for cascading,
-   * not meta_window_get_position()
-   */
-  if (aw->frame)
-    {
-      ax = aw->frame->rect.x;
-      ay = aw->frame->rect.y;
-    }
-  else
-    {
-      ax = aw->rect.x;
-      ay = aw->rect.y;
-    }
-
-  if (bw->frame)
-    {
-      bx = bw->frame->rect.x;
-      by = bw->frame->rect.y;
-    }
-  else
-    {
-      bx = bw->rect.x;
-      by = bw->rect.y;
-    }
+  meta_window_get_frame_rect (aw, &a_frame);
+  meta_window_get_frame_rect (bw, &b_frame);
+  ax = a_frame.x;
+  ay = a_frame.y;
+  bx = b_frame.x;
+  by = b_frame.y;
  
  /* probably there's a fast good-enough-guess we could use here. */
  from_origin_a = sqrt (ax * ax + ay * ay);
@@ -90,7 +72,6 @@ northwestcmp (gconstpointer a, gconstpointer b)

 static void
 find_next_cascade (MetaWindow *window,
-                   MetaFrameBorders *borders,
                   /* visible windows on relevant workspaces */
                   GList      *windows,
                   int         x,
@@ -102,6 +83,7 @@ find_next_cascade (MetaWindow *window,
  GList *sorted;
  int cascade_x, cascade_y;
  int x_threshold, y_threshold;
+  MetaRectangle frame_rect;
  int window_width, window_height;
  int cascade_stage;
  MetaRectangle work_area;
@@ -120,10 +102,13 @@ find_next_cascade (MetaWindow *window,
   * manually cascade.
   */
 #define CASCADE_FUZZ 15
-  if (borders)
+  if (window->frame)
    {
-      x_threshold = MAX (borders->visible.left, CASCADE_FUZZ);
-      y_threshold = MAX (borders->visible.top, CASCADE_FUZZ);
+      MetaFrameBorders borders;
+
+      meta_frame_calc_borders (window->frame, &borders);
+      x_threshold = MAX (borders.visible.left, CASCADE_FUZZ);
+      y_threshold = MAX (borders.visible.top, CASCADE_FUZZ);
    }
  else
    {
@@ -143,30 +128,25 @@ find_next_cascade (MetaWindow *window,
  cascade_y = MAX (0, work_area.y);
  
  /* Find first cascade position that's not used. */
-  
-  window_width = window->frame ? window->frame->rect.width : window->rect.width;
-  window_height = window->frame ? window->frame->rect.height : window->rect.height;
+
+  meta_window_get_frame_rect (window, &frame_rect);
+  window_width = frame_rect.width;
+  window_height = frame_rect.height;
  
  cascade_stage = 0;
  tmp = sorted;
  while (tmp != NULL)
    {
      MetaWindow *w;
+      MetaRectangle w_frame_rect;
      int wx, wy;
      
      w = tmp->data;

      /* we want frame position, not window position */
-      if (w->frame)
-        {
-          wx = w->frame->rect.x;
-          wy = w->frame->rect.y;
-        }
-      else
-        {
-          wx = w->rect.x;
-          wy = w->rect.y;
-        }
+      meta_window_get_frame_rect (w, &w_frame_rect);
+      wx = w_frame_rect.x;
+      wy = w_frame_rect.y;
      
      if (ABS (wx - cascade_x) < x_threshold &&
          ABS (wy - cascade_y) < y_threshold)
@@ -223,22 +203,12 @@ find_next_cascade (MetaWindow *window,
  
  g_list_free (sorted);

-  /* Convert coords to position of window, not position of frame. */
-  if (borders == NULL)
-    {
-      *new_x = cascade_x;
-      *new_y = cascade_y;
-    }
-  else
-    {
-      *new_x = cascade_x + borders->visible.left;
-      *new_y = cascade_y + borders->visible.top;
-    }
+  *new_x = cascade_x;
+  *new_y = cascade_y;
 }

 static void
 find_most_freespace (MetaWindow *window,
-                     MetaFrameBorders *borders,
                     /* visible windows on relevant workspaces */
                     MetaWindow *focus_window,
                     int         x,
@@ -250,29 +220,25 @@ find_most_freespace (MetaWindow *window,
  int max_area;
  int max_width, max_height, left, right, top, bottom;
  int left_space, right_space, top_space, bottom_space;
-  int frame_size_left, frame_size_top;
  MetaRectangle work_area;
  MetaRectangle avoid;
-  MetaRectangle outer;
-
-  frame_size_left = borders ? borders->visible.left : 0;
-  frame_size_top  = borders ? borders->visible.top : 0;
+  MetaRectangle frame_rect;

  meta_window_get_work_area_current_monitor (focus_window, &work_area);
-  meta_window_get_outer_rect (focus_window, &avoid);
-  meta_window_get_outer_rect (window, &outer);
+  meta_window_get_frame_rect (focus_window, &avoid);
+  meta_window_get_frame_rect (window, &frame_rect);

  /* Find the areas of choosing the various sides of the focus window */
-  max_width  = MIN (avoid.width, outer.width);
-  max_height = MIN (avoid.height, outer.height);
+  max_width  = MIN (avoid.width, frame_rect.width);
+  max_height = MIN (avoid.height, frame_rect.height);
  left_space   = avoid.x - work_area.x;
  right_space  = work_area.width - (avoid.x + avoid.width - work_area.x);
  top_space    = avoid.y - work_area.y;
  bottom_space = work_area.height - (avoid.y + avoid.height - work_area.y);
-  left   = MIN (left_space,   outer.width);
-  right  = MIN (right_space,  outer.width);
-  top    = MIN (top_space,    outer.height);
-  bottom = MIN (bottom_space, outer.height);
+  left   = MIN (left_space,   frame_rect.width);
+  right  = MIN (right_space,  frame_rect.width);
+  top    = MIN (top_space,    frame_rect.height);
+  bottom = MIN (bottom_space, frame_rect.height);

  /* Find out which side of the focus_window can show the most of the window */
  side = META_LEFT;
@@ -304,39 +270,56 @@ find_most_freespace (MetaWindow *window,
  switch (side)
    {
    case META_LEFT:
-      *new_y = avoid.y + frame_size_top;
-      if (left_space > outer.width)
-        *new_x = avoid.x - outer.width + frame_size_left;
+      *new_y = avoid.y;
+      if (left_space > frame_rect.width)
+        *new_x = avoid.x - frame_rect.width;
      else
-        *new_x = work_area.x + frame_size_left;
+        *new_x = work_area.x;
      break;
    case META_RIGHT:
-      *new_y = avoid.y + frame_size_top;
-      if (right_space > outer.width)
-        *new_x = avoid.x + avoid.width + frame_size_left;
+      *new_y = avoid.y;
+      if (right_space > frame_rect.width)
+        *new_x = avoid.x + avoid.width;
      else
-        *new_x = work_area.x + work_area.width - outer.width + frame_size_left;
+        *new_x = work_area.x + work_area.width - frame_rect.width;
      break;
    case META_TOP:
-      *new_x = avoid.x + frame_size_left;
-      if (top_space > outer.height)
-        *new_y = avoid.y - outer.height + frame_size_top;
+      *new_x = avoid.x;
+      if (top_space > frame_rect.height)
+        *new_y = avoid.y - frame_rect.height;
      else
-        *new_y = work_area.y + frame_size_top;
+        *new_y = work_area.y;
      break;
    case META_BOTTOM:
-      *new_x = avoid.x + frame_size_left;
-      if (bottom_space > outer.height)
-        *new_y = avoid.y + avoid.height + frame_size_top;
+      *new_x = avoid.x;
+      if (bottom_space > frame_rect.height)
+        *new_y = avoid.y + avoid.height;
      else
-        *new_y = work_area.y + work_area.height - outer.height + frame_size_top;
+        *new_y = work_area.y + work_area.height - frame_rect.height;
      break;
    }
 }

+static gboolean
+window_overlaps_focus_window (MetaWindow *window)
+{
+  MetaWindow *focus_window;
+  MetaRectangle window_frame, focus_frame, overlap;
+
+  focus_window = window->display->focus_window;
+  if (focus_window == NULL)
+    return FALSE;
+
+  meta_window_get_frame_rect (window, &window_frame);
+  meta_window_get_frame_rect (focus_window, &focus_frame);
+
+  return meta_rectangle_intersect (&window_frame,
+                                   &focus_frame,
+                                   &overlap);
+}
+
 static void
 avoid_being_obscured_as_second_modal_dialog (MetaWindow *window,
-                                             MetaFrameBorders *borders,
                                             int        *x,
                                             int        *y)
 {
@@ -355,18 +338,17 @@ avoid_being_obscured_as_second_modal_dialog (MetaWindow *window,
   */

  MetaWindow *focus_window;
-  MetaRectangle overlap;

  focus_window = window->display->focus_window;

+  /* denied_focus_and_not_transient is only set when focus_window != NULL */
+
  if (window->denied_focus_and_not_transient &&
      window->wm_state_modal && /* FIXME: Maybe do this for all transients? */
      meta_window_same_application (window, focus_window) &&
-      meta_rectangle_intersect (&window->rect,
-                                &focus_window->rect,
-                                &overlap))
+      window_overlaps_focus_window (window))
    {
-      find_most_freespace (window, borders, focus_window, *x, *y, x, y);
+      find_most_freespace (window, focus_window, *x, *y, x, y);
      meta_topic (META_DEBUG_PLACEMENT,
                  "Dialog window %s was denied focus but may be modal "
                  "to the focus window; had to move it to avoid the "
@@ -409,7 +391,7 @@ rectangle_overlaps_some_window (MetaRectangle *rect,
        case META_WINDOW_UTILITY:
        case META_WINDOW_TOOLBAR:
        case META_WINDOW_MENU:
-          meta_window_get_outer_rect (other, &other_rect);
+          meta_window_get_frame_rect (other, &other_rect);
          
          if (meta_rectangle_intersect (rect, &other_rect, &dest))
            return TRUE;
@@ -427,20 +409,14 @@ leftmost_cmp (gconstpointer a, gconstpointer b)
 {
  MetaWindow *aw = (gpointer) a;
  MetaWindow *bw = (gpointer) b;
+  MetaRectangle a_frame;
+  MetaRectangle b_frame;
  int ax, bx;

-  /* we're interested in the frame position for cascading,
-   * not meta_window_get_position()
-   */
-  if (aw->frame)
-    ax = aw->frame->rect.x;
-  else
-    ax = aw->rect.x;
-
-  if (bw->frame)
-    bx = bw->frame->rect.x;
-  else
-    bx = bw->rect.x;
+  meta_window_get_frame_rect (aw, &a_frame);
+  meta_window_get_frame_rect (bw, &b_frame);
+  ax = a_frame.x;
+  bx = b_frame.x;

  if (ax < bx)
    return -1;
@@ -455,20 +431,14 @@ topmost_cmp (gconstpointer a, gconstpointer b)
 {
  MetaWindow *aw = (gpointer) a;
  MetaWindow *bw = (gpointer) b;
+  MetaRectangle a_frame;
+  MetaRectangle b_frame;
  int ay, by;

-  /* we're interested in the frame position for cascading,
-   * not meta_window_get_position()
-   */
-  if (aw->frame)
-    ay = aw->frame->rect.y;
-  else
-    ay = aw->rect.y;
-
-  if (bw->frame)
-    by = bw->frame->rect.y;
-  else
-    by = bw->rect.y;
+  meta_window_get_frame_rect (aw, &a_frame);
+  meta_window_get_frame_rect (bw, &b_frame);
+  ay = a_frame.y;
+  by = b_frame.y;

  if (ay < by)
    return -1;
@@ -506,7 +476,6 @@ center_tile_rect_in_area (MetaRectangle *rect,
 */
 static gboolean
 find_first_fit (MetaWindow *window,
-                MetaFrameBorders *borders,
                /* visible windows on relevant workspaces */
                GList      *windows,
 		int         monitor,
@@ -540,15 +509,8 @@ find_first_fit (MetaWindow *window,
  right_sorted = g_list_copy (windows);
  right_sorted = g_list_sort (right_sorted, topmost_cmp);
  right_sorted = g_list_sort (right_sorted, leftmost_cmp);
-  
-  rect.width = window->rect.width;
-  rect.height = window->rect.height;
-  
-  if (borders)
-    {
-      rect.width += borders->visible.left + borders->visible.right;
-      rect.height += borders->visible.top + borders->visible.bottom;
-    }
+
+  meta_window_get_frame_rect (window, &rect);

 #ifdef WITH_VERBOSE_MODE
    {
@@ -570,11 +532,6 @@ find_first_fit (MetaWindow *window,
      {
        *new_x = rect.x;
        *new_y = rect.y;
-        if (borders)
-          {
-            *new_x += borders->visible.left;
-            *new_y += borders->visible.top;
-          }
    
        retval = TRUE;
       
@@ -586,23 +543,18 @@ find_first_fit (MetaWindow *window,
    while (tmp != NULL)
      {
        MetaWindow *w = tmp->data;
-        MetaRectangle outer_rect;
+        MetaRectangle frame_rect;

-        meta_window_get_outer_rect (w, &outer_rect);
+        meta_window_get_frame_rect (w, &frame_rect);
      
-        rect.x = outer_rect.x;
-        rect.y = outer_rect.y + outer_rect.height;
+        rect.x = frame_rect.x;
+        rect.y = frame_rect.y + frame_rect.height;
      
        if (meta_rectangle_contains_rect (&work_area, &rect) &&
            !rectangle_overlaps_some_window (&rect, below_sorted))
          {
            *new_x = rect.x;
            *new_y = rect.y;
-            if (borders)
-              {
-                *new_x += borders->visible.left;
-                *new_y += borders->visible.top;
-              }
          
            retval = TRUE;
          
@@ -617,23 +569,18 @@ find_first_fit (MetaWindow *window,
    while (tmp != NULL)
      {
        MetaWindow *w = tmp->data;
-        MetaRectangle outer_rect;
+        MetaRectangle frame_rect;
   
-        meta_window_get_outer_rect (w, &outer_rect);
+        meta_window_get_frame_rect (w, &frame_rect);
     
-        rect.x = outer_rect.x + outer_rect.width;
-        rect.y = outer_rect.y;
+        rect.x = frame_rect.x + frame_rect.width;
+        rect.y = frame_rect.y;
   
        if (meta_rectangle_contains_rect (&work_area, &rect) &&
            !rectangle_overlaps_some_window (&rect, right_sorted))
          {
            *new_x = rect.x;
            *new_y = rect.y;
-            if (borders)
-              {
-                *new_x += borders->visible.left;
-                *new_y += borders->visible.top;
-              }
        
            retval = TRUE;
       
@@ -652,7 +599,6 @@ find_first_fit (MetaWindow *window,

 void
 meta_window_place (MetaWindow        *window,
-                   MetaFrameBorders  *borders,
                   int                x,
                   int                y,
                   int               *new_x,
@@ -661,13 +607,6 @@ meta_window_place (MetaWindow        *window,
  GList *windows;
  const MetaMonitorInfo *xi;

-  /* frame member variables should NEVER be used in here, only
-   * MetaFrameBorders. But remember borders == NULL
-   * for undecorated windows. Also, this function should
-   * NEVER have side effects other than computing the
-   * placement coordinates.
-   */
-
  meta_topic (META_DEBUG_PLACEMENT, "Placing window %s\n", window->desc);

  windows = NULL;
@@ -756,7 +695,7 @@ meta_window_place (MetaWindow        *window,
        {
          meta_topic (META_DEBUG_PLACEMENT,
                      "Not placing window with PPosition or USPosition set\n");
-          avoid_being_obscured_as_second_modal_dialog (window, borders, &x, &y);
+          avoid_being_obscured_as_second_modal_dialog (window, &x, &y);
          goto done_no_constraints;
        }
    }
@@ -775,29 +714,27 @@ meta_window_place (MetaWindow        *window,

      if (parent)
        {
-          int w;
+          MetaRectangle frame_rect, parent_frame_rect;

-          meta_window_get_position (parent, &x, &y);
-          w = parent->rect.width;
+          meta_window_get_frame_rect (window, &frame_rect);
+          meta_window_get_frame_rect (parent, &parent_frame_rect);
+
+          y = parent_frame_rect.y;

          /* center of parent */
-          x = x + w / 2;
+          x = parent_frame_rect.x + parent_frame_rect.width / 2;
          /* center of child over center of parent */
-          x -= window->rect.width / 2;
+          x -= frame_rect.width / 2;

          /* "visually" center window over parent, leaving twice as
           * much space below as on top.
           */
-          y += (parent->rect.height - window->rect.height)/3;
-
-          /* put top of child's frame, not top of child's client */
-          if (borders)
-            y += borders->visible.top;
+          y += (parent_frame_rect.height - frame_rect.height)/3;

          meta_topic (META_DEBUG_PLACEMENT, "Centered window %s over transient parent\n",
                      window->desc);
          
-          avoid_being_obscured_as_second_modal_dialog (window, borders, &x, &y);
+          avoid_being_obscured_as_second_modal_dialog (window, &x, &y);

          goto done;
        }
@@ -813,6 +750,9 @@ meta_window_place (MetaWindow        *window,
    {
      /* Center on current monitor */
      int w, h;
+      MetaRectangle frame_rect;
+
+      meta_window_get_frame_rect (window, &frame_rect);

      /* Warning, this function is a round trip! */
      xi = meta_screen_get_current_monitor_info (window->screen);
@@ -820,8 +760,8 @@ meta_window_place (MetaWindow        *window,
      w = xi->rect.width;
      h = xi->rect.height;

-      x = (w - window->rect.width) / 2;
-      y = (h - window->rect.height) / 2;
+      x = (w - frame_rect.width) / 2;
+      y = (h - frame_rect.height) / 2;

      x += xi->rect.x;
      y += xi->rect.y;
@@ -865,7 +805,7 @@ meta_window_place (MetaWindow        *window,
  x = xi->rect.x;
  y = xi->rect.y;

-  if (find_first_fit (window, borders, windows,
+  if (find_first_fit (window, windows,
                      xi->number,
                      x, y, &x, &y))
    goto done_check_denied_focus;
@@ -878,17 +818,17 @@ meta_window_place (MetaWindow        *window,
      !window->fullscreen)
    {
      MetaRectangle workarea;
-      MetaRectangle outer;
+      MetaRectangle frame_rect;

      meta_window_get_work_area_for_monitor (window,
                                             xi->number,
                                             &workarea);      
-      meta_window_get_outer_rect (window, &outer);
+      meta_window_get_frame_rect (window, &frame_rect);
      
      /* If the window is bigger than the screen, then automaximize.  Do NOT
       * auto-maximize the directions independently.  See #419810.
       */
-      if (outer.width >= workarea.width && outer.height >= workarea.height)
+      if (frame_rect.width >= workarea.width && frame_rect.height >= workarea.height)
        {
          window->maximize_horizontally_after_placement = TRUE;
          window->maximize_vertically_after_placement = TRUE;
@@ -899,7 +839,7 @@ meta_window_place (MetaWindow        *window,
   * fully overlapping window (e.g. starting multiple terminals)
   * */
  if (x == xi->rect.x && y == xi->rect.y)  
-    find_next_cascade (window, borders, windows, x, y, &x, &y);
+    find_next_cascade (window, windows, x, y, &x, &y);

 done_check_denied_focus:
  /* If the window is being denied focus and isn't a transient of the
@@ -909,17 +849,14 @@ meta_window_place (MetaWindow        *window,
   */
  if (window->denied_focus_and_not_transient)
    {
-      gboolean       found_fit;
      MetaWindow    *focus_window;
-      MetaRectangle  overlap;
+      gboolean       found_fit;

      focus_window = window->display->focus_window;
      g_assert (focus_window != NULL);

      /* No need to do anything if the window doesn't overlap at all */
-      found_fit = !meta_rectangle_intersect (&window->rect,
-                                             &focus_window->rect,
-                                             &overlap);
+      found_fit = !window_overlaps_focus_window (window);

      /* Try to do a first fit again, this time only taking into account the
       * focus window.
@@ -933,7 +870,7 @@ meta_window_place (MetaWindow        *window,
          x = xi->rect.x;
          y = xi->rect.y;

-          found_fit = find_first_fit (window, borders, focus_window_list,
+          found_fit = find_first_fit (window, focus_window_list,
                                      xi->number,
                                      x, y, &x, &y);
          g_list_free (focus_window_list);
@@ -943,7 +880,7 @@ meta_window_place (MetaWindow        *window,
       * as possible.
       */
      if (!found_fit)
-        find_most_freespace (window, borders, focus_window, x, y, &x, &y);
+        find_most_freespace (window, focus_window, x, y, &x, &y);
    }
  
 done:
--- a/src/core/place.h
+++ b/src/core/place.h
@@ -16,9 +16,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef META_PLACE_H
@@ -28,7 +26,6 @@
 #include "frame.h"

 void meta_window_place (MetaWindow *window,
-                        MetaFrameBorders *borders,
                        int         x,
                        int         y,
                        int        *new_x,
--- a/src/core/prefs.c
+++ b/src/core/prefs.c
@@ -17,9 +17,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 /**
@@ -59,7 +57,6 @@

 #define KEY_OVERLAY_KEY "overlay-key"
 #define KEY_WORKSPACES_ONLY_ON_PRIMARY "workspaces-only-on-primary"
-#define KEY_NO_TAB_POPUP "no-tab-popup"

 /* These are the different schemas we are keeping
 * a GSettings instance for */
@@ -114,8 +111,6 @@ static char **workspace_names = NULL;

 static gboolean workspaces_only_on_primary = FALSE;

-static gboolean no_tab_popup = FALSE;
-
 static char *iso_next_group_option = NULL;

 static void handle_preference_update_enum (GSettings *settings,
@@ -367,13 +362,6 @@ static MetaBoolPreference preferences_bool[] =
      },
      &workspaces_only_on_primary,
    },
-    {
-      { KEY_NO_TAB_POPUP,
-        SCHEMA_MUTTER,
-        META_PREF_NO_TAB_POPUP,
-      },
-      &no_tab_popup,
-    },
    {
      { "auto-maximize",
        SCHEMA_MUTTER,
@@ -1815,9 +1803,6 @@ meta_preference_to_string (MetaPreference pref)
    case META_PREF_WORKSPACES_ONLY_ON_PRIMARY:
      return "WORKSPACES_ONLY_ON_PRIMARY";

-    case META_PREF_NO_TAB_POPUP:
-      return "NO_TAB_POPUP";
-
    case META_PREF_DRAGGABLE_BORDER_WIDTH:
      return "DRAGGABLE_BORDER_WIDTH";

@@ -1871,7 +1856,7 @@ init_bindings (void)
  pref = g_new0 (MetaKeyPref, 1);
  pref->name = g_strdup ("overlay-key");
  pref->action = META_KEYBINDING_ACTION_OVERLAY_KEY;
-  pref->bindings = g_slist_prepend (pref->bindings, &overlay_key_combo);
+  pref->combos = g_slist_prepend (pref->combos, &overlay_key_combo);
  pref->builtin = 1;

  g_hash_table_insert (key_bindings, g_strdup ("overlay-key"), pref);
@@ -1881,7 +1866,7 @@ static gboolean
 update_binding (MetaKeyPref *binding,
                gchar      **strokes)
 {
-  GSList *old_bindings, *a, *b;
+  GSList *old_combos, *a, *b;
  gboolean changed;
  unsigned int keysym;
  unsigned int keycode;
@@ -1893,8 +1878,8 @@ update_binding (MetaKeyPref *binding,
              "Binding \"%s\" has new GSettings value\n",
              binding->name);

-  old_bindings = binding->bindings;
-  binding->bindings = NULL;
+  old_combos = binding->combos;
+  binding->combos = NULL;

  for (i = 0; strokes && strokes[i]; i++)
    {
@@ -1935,17 +1920,17 @@ update_binding (MetaKeyPref *binding,
      combo->keysym = keysym;
      combo->keycode = keycode;
      combo->modifiers = mods;
-      binding->bindings = g_slist_prepend (binding->bindings, combo);
+      binding->combos = g_slist_prepend (binding->combos, combo);

      meta_topic (META_DEBUG_KEYBINDINGS,
                      "New keybinding for \"%s\" is keysym = 0x%x keycode = 0x%x mods = 0x%x\n",
                      binding->name, keysym, keycode, mods);
    }

-  binding->bindings = g_slist_reverse (binding->bindings);
+  binding->combos = g_slist_reverse (binding->combos);

-  a = old_bindings;
-  b = binding->bindings;
+  a = old_combos;
+  b = binding->combos;
  while (TRUE)
    {
      if ((!a && b) || (a && !b))
@@ -1970,7 +1955,7 @@ update_binding (MetaKeyPref *binding,
        }
    }

-  g_slist_free_full (old_bindings, g_free);
+  g_slist_free_full (old_combos, g_free);

  return changed;
 }
@@ -2105,7 +2090,7 @@ meta_prefs_add_keybinding (const char           *name,
  pref->name = g_strdup (name);
  pref->settings = g_object_ref (settings);
  pref->action = action;
-  pref->bindings = NULL;
+  pref->combos = NULL;
  pref->add_shift = (flags & META_KEY_BINDING_REVERSES) != 0;
  pref->per_window = (flags & META_KEY_BINDING_PER_WINDOW) != 0;
  pref->builtin = (flags & META_KEY_BINDING_BUILTIN) != 0;
@@ -2169,11 +2154,6 @@ meta_prefs_remove_keybinding (const char *name)
  return TRUE;
 }

-/**
- * meta_prefs_get_keybindings:
- *
- * Returns: (element-type MetaKeyPref) (transfer container):
- */
 GList *
 meta_prefs_get_keybindings ()
 {
@@ -2274,7 +2254,7 @@ meta_prefs_get_window_binding (const char          *name,

  if (pref->per_window)
    {
-      GSList *s = pref->bindings;
+      GSList *s = pref->combos;

      while (s)
        {
@@ -2322,25 +2302,6 @@ meta_prefs_get_workspaces_only_on_primary (void)
  return workspaces_only_on_primary;
 }

-
-gboolean
-meta_prefs_get_no_tab_popup (void)
-{
-  return no_tab_popup;
-}
-
-void
-meta_prefs_set_no_tab_popup (gboolean whether)
-{
-  MetaBasePreference *pref;
-
-  if (find_pref (preferences_bool, sizeof(MetaBoolPreference),
-                 KEY_NO_TAB_POPUP, &pref))
-    {
-      g_settings_set_boolean (SETTINGS (pref->schema), KEY_NO_TAB_POPUP, whether);
-    }
-}
-
 int
 meta_prefs_get_draggable_border_width (void)
 {
--- a/src/core/screen-private.h
+++ b/src/core/screen-private.h
@@ -25,9 +25,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef META_SCREEN_PRIVATE_H
@@ -66,8 +64,6 @@ struct _MetaScreen
  Visual *default_xvisual;
  MetaRectangle rect;  /* Size of screen; rect.x & rect.y are always 0 */
  MetaUI *ui;
-  MetaTabPopup *tab_popup, *ws_popup;
-  MetaTilePreview *tile_preview;

  guint tile_preview_timeout_id;

@@ -153,25 +149,9 @@ void          meta_screen_foreach_window      (MetaScreen                 *scree

 void          meta_screen_update_cursor       (MetaScreen                 *screen);

-void          meta_screen_tab_popup_create       (MetaScreen              *screen,
-                                                  MetaTabList              list_type,
-                                                  MetaTabShowType          show_type,
-                                                  MetaWindow              *initial_window);
-void          meta_screen_tab_popup_forward      (MetaScreen              *screen);
-void          meta_screen_tab_popup_backward     (MetaScreen              *screen);
-MetaWindow*   meta_screen_tab_popup_get_selected (MetaScreen              *screen);
-void          meta_screen_tab_popup_destroy      (MetaScreen              *screen);
-
-void          meta_screen_workspace_popup_create       (MetaScreen    *screen,
-                                                        MetaWorkspace *initial_selection);
-void          meta_screen_workspace_popup_select       (MetaScreen    *screen,
-                                                        MetaWorkspace *workspace);
-MetaWorkspace*meta_screen_workspace_popup_get_selected (MetaScreen    *screen);
-void          meta_screen_workspace_popup_destroy      (MetaScreen    *screen);
-
-void          meta_screen_tile_preview_update          (MetaScreen    *screen,
+void          meta_screen_update_tile_preview          (MetaScreen    *screen,
                                                        gboolean       delay);
-void          meta_screen_tile_preview_hide            (MetaScreen    *screen);
+void          meta_screen_hide_tile_preview            (MetaScreen    *screen);

 MetaWindow*   meta_screen_get_mouse_window     (MetaScreen                 *screen,
                                                MetaWindow                 *not_this_one);
@@ -243,7 +223,7 @@ void     meta_screen_workspace_switched (MetaScreen         *screen,

 void meta_screen_set_active_workspace_hint (MetaScreen *screen);

-Window   meta_screen_create_guard_window (Display *xdisplay, MetaScreen *screen);
+void meta_screen_create_guard_window (MetaScreen *screen);

 gboolean meta_screen_handle_xevent (MetaScreen *screen,
                                    XEvent     *xevent);
--- a/src/core/screen.c
+++ b/src/core/screen.c
@@ -19,9 +19,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 /**
@@ -45,7 +43,7 @@
 #include <meta/compositor.h>
 #include "mutter-enum-types.h"
 #include "core.h"
-#include "meta-wayland-private.h"
+#include "meta-wayland.h"
 #include "meta-cursor-tracker-private.h"

 #include <X11/extensions/Xinerama.h>
@@ -310,6 +308,8 @@ set_supported_hint (MetaScreen *screen)
 #include <meta/atomnames.h>
 #undef item
 #undef EWMH_ATOMS_ONLY
+
+    screen->display->atom__GTK_FRAME_EXTENTS,
  };

  XChangeProperty (screen->display->xdisplay, screen->xroot,
@@ -391,6 +391,8 @@ int
 meta_screen_monitor_index_to_xinerama_index (MetaScreen *screen,
                                             int         index)
 {
+  g_return_val_if_fail (index >= 0 && index < screen->n_monitor_infos, -1);
+
  meta_screen_ensure_xinerama_indices (screen);

  return screen->monitor_infos[index].xinerama_index;
@@ -447,17 +449,16 @@ reload_monitor_infos (MetaScreen *screen)
 * should effectively be forwarded to events on the background actor,
 * providing that the scene graph is set up correctly.
 */
-Window
-meta_screen_create_guard_window (Display *xdisplay, MetaScreen *screen)
+static Window
+create_guard_window (Display *xdisplay, MetaScreen *screen)
 {
  XSetWindowAttributes attributes;
  Window guard_window;
  gulong create_serial;
  MetaStackWindow stack_window;
-  
+
  attributes.event_mask = NoEventMask;
  attributes.override_redirect = True;
-  attributes.background_pixel = BlackPixel (xdisplay, screen->number);

  /* We have to call record_add() after we have the new window ID,
   * so save the serial for the CreateWindow request until then */
@@ -470,10 +471,10 @@ meta_screen_create_guard_window (Display *xdisplay, MetaScreen *screen)
 		   screen->rect.width,
 		   screen->rect.height,
 		   0, /* border width */
-		   CopyFromParent, /* depth */
-		   CopyFromParent, /* class */
+		   0, /* depth */
+		   InputOnly, /* class */
 		   CopyFromParent, /* visual */
-		   CWEventMask|CWOverrideRedirect|CWBackPixel,
+		   CWEventMask|CWOverrideRedirect,
 		   &attributes);

  {
@@ -761,10 +762,6 @@ meta_screen_new (MetaDisplay *display,
  screen->ui = meta_ui_new (screen->display->xdisplay,
                            screen->xscreen);

-  screen->tab_popup = NULL;
-  screen->ws_popup = NULL;
-  screen->tile_preview = NULL;
-
  screen->tile_preview_timeout_id = 0;

  screen->stack = meta_stack_new (screen);
@@ -859,9 +856,9 @@ meta_screen_free (MetaScreen *screen,
                  screen->wm_sn_selection_window);
  
  if (screen->work_area_later != 0)
-    g_source_remove (screen->work_area_later);
+    meta_later_remove (screen->work_area_later);
  if (screen->check_fullscreen_later != 0)
-    g_source_remove (screen->check_fullscreen_later);
+    meta_later_remove (screen->check_fullscreen_later);

  if (screen->monitor_infos)
    g_free (screen->monitor_infos);
@@ -869,9 +866,6 @@ meta_screen_free (MetaScreen *screen,
  if (screen->tile_preview_timeout_id)
    g_source_remove (screen->tile_preview_timeout_id);

-  if (screen->tile_preview)
-    meta_tile_preview_free (screen->tile_preview);
-  
  g_free (screen->screen_name);

  g_object_unref (screen);
@@ -880,83 +874,34 @@ meta_screen_free (MetaScreen *screen,
  meta_display_ungrab (display);
 }

-typedef struct
+void
+meta_screen_create_guard_window (MetaScreen *screen)
 {
-  Window		xwindow;
-  XWindowAttributes	attrs;
-} WindowInfo;
-
-static GList *
-list_windows (MetaScreen *screen)
-{
-  Window ignored1, ignored2;
-  Window *children;
-  guint n_children, i;
-  GList *result;
-
-  XQueryTree (screen->display->xdisplay,
-              screen->xroot,
-              &ignored1, &ignored2, &children, &n_children);
-
-  result = NULL;
-  for (i = 0; i < n_children; ++i)
-    {
-      WindowInfo *info = g_new0 (WindowInfo, 1);
-
-      meta_error_trap_push_with_return (screen->display);
-      
-      XGetWindowAttributes (screen->display->xdisplay,
-                            children[i], &info->attrs);
-
-      if (meta_error_trap_pop_with_return (screen->display))
-	{
-          meta_verbose ("Failed to get attributes for window 0x%lx\n",
-                        children[i]);
-	  g_free (info);
-        }
-      else
-        {
-	  info->xwindow = children[i];
-	}
-
-      result = g_list_prepend (result, info);
-    }
-
-  if (children)
-    XFree (children);
-
-  return g_list_reverse (result);
+  if (screen->guard_window == None)
+    screen->guard_window = create_guard_window (screen->display->xdisplay, screen);
 }

 void
 meta_screen_manage_all_windows (MetaScreen *screen)
 {
-  GList *windows;
-  GList *list;
-
-  meta_display_grab (screen->display);
-
-  if (screen->guard_window == None)
-    screen->guard_window =
-      meta_screen_create_guard_window (screen->display->xdisplay, screen);
-
-  windows = list_windows (screen);
+  MetaStackWindow *_children;
+  MetaStackWindow *children;
+  int n_children, i;

  meta_stack_freeze (screen->stack);
-  for (list = windows; list != NULL; list = list->next)
+  meta_stack_tracker_get_stack (screen->stack_tracker, &_children, &n_children);
+
+  /* Copy the stack as it will be modified as part of the loop */
+  children = g_memdup (_children, sizeof (MetaStackWindow) * n_children);
+
+  for (i = 0; i < n_children; ++i)
    {
-      WindowInfo *info = list->data;
-
-      meta_window_new_with_attrs (screen->display, info->xwindow, TRUE,
-                                  META_COMP_EFFECT_NONE,
-                                  &info->attrs);
+      meta_window_x11_new (screen->display, children[i].x11.xwindow, TRUE,
+                           META_COMP_EFFECT_NONE);
    }
+
+  g_free (children);
  meta_stack_thaw (screen->stack);
-
-  g_list_foreach (windows, (GFunc)g_free, NULL);
-  g_list_free (windows);
-
-  meta_display_ungrab (screen->display);
 }

 /**
@@ -1482,255 +1427,8 @@ meta_screen_update_cursor (MetaScreen *screen)
                                       screen->current_cursor);
 }

-void
-meta_screen_tab_popup_create (MetaScreen      *screen,
-                              MetaTabList      list_type,
-                              MetaTabShowType  show_type,
-                              MetaWindow      *initial_selection)
-{
-  MetaTabEntry *entries;
-  GList *tab_list;
-  GList *tmp;
-  int len;
-  int i;
-
-  if (screen->tab_popup)
-    return;
-
-  tab_list = meta_display_get_tab_list (screen->display,
-                                        list_type,
-                                        screen,
-                                        screen->active_workspace);
-
-  len = g_list_length (tab_list);
-
-  entries = g_new (MetaTabEntry, len + 1);
-  entries[len].key = NULL;
-  entries[len].title = NULL;
-  entries[len].icon = NULL;
-
-  i = 0;
-  tmp = tab_list;
-  while (i < len)
-    {
-      MetaWindow *window;
-      MetaRectangle r;
-
-      window = tmp->data;
-
-      entries[i].key = (MetaTabEntryKey) window;
-      entries[i].title = window->title;
-      entries[i].icon = g_object_ref (window->icon);
-      entries[i].blank = FALSE;
-      entries[i].hidden = !meta_window_showing_on_its_workspace (window);
-      entries[i].demands_attention = window->wm_state_demands_attention;
-
-      if (show_type == META_TAB_SHOW_INSTANTLY ||
-          !entries[i].hidden                   ||
-          !meta_window_get_icon_geometry (window, &r))
-        meta_window_get_outer_rect (window, &r);
-
-      entries[i].rect = r;
-
-      /* Find inside of highlight rectangle to be used when window is
-       * outlined for tabbing.  This should be the size of the
-       * east/west frame, and the size of the south frame, on those
-       * sides.  On the top it should be the size of the south frame
-       * edge.
-       */
-#define OUTLINE_WIDTH 5
-      /* Top side */
-      if (!entries[i].hidden &&
-          window->frame && window->frame->bottom_height > 0 &&
-          window->frame->child_y >= window->frame->bottom_height)
-        entries[i].inner_rect.y = window->frame->bottom_height;
-      else
-        entries[i].inner_rect.y = OUTLINE_WIDTH;
-
-      /* Bottom side */
-      if (!entries[i].hidden &&
-          window->frame && window->frame->bottom_height != 0)
-        entries[i].inner_rect.height = r.height
-          - entries[i].inner_rect.y - window->frame->bottom_height;
-      else
-        entries[i].inner_rect.height = r.height
-          - entries[i].inner_rect.y - OUTLINE_WIDTH;
-
-      /* Left side */
-      if (!entries[i].hidden && window->frame && window->frame->child_x != 0)
-        entries[i].inner_rect.x = window->frame->child_x;
-      else
-        entries[i].inner_rect.x = OUTLINE_WIDTH;
-
-      /* Right side */
-      if (!entries[i].hidden &&
-          window->frame && window->frame->right_width != 0)
-        entries[i].inner_rect.width = r.width
-          - entries[i].inner_rect.x - window->frame->right_width;
-      else
-        entries[i].inner_rect.width = r.width
-          - entries[i].inner_rect.x - OUTLINE_WIDTH;
-
-      ++i;
-      tmp = tmp->next;
-    }
-
-  if (!meta_prefs_get_no_tab_popup ())
-    screen->tab_popup = meta_ui_tab_popup_new (entries,
-                                               screen->number,
-                                               len,
-                                               5, /* FIXME */
-                                               TRUE);
-
-  for (i = 0; i < len; i++)
-    g_object_unref (entries[i].icon);
-
-  g_free (entries);
-
-  g_list_free (tab_list);
-
-  meta_ui_tab_popup_select (screen->tab_popup,
-                            (MetaTabEntryKey) initial_selection);
-
-  if (show_type != META_TAB_SHOW_INSTANTLY)
-    meta_ui_tab_popup_set_showing (screen->tab_popup, TRUE);
-}
-
-void
-meta_screen_tab_popup_forward (MetaScreen *screen)
-{
-  g_return_if_fail (screen->tab_popup != NULL);
-
-  meta_ui_tab_popup_forward (screen->tab_popup);
-}
-
-void
-meta_screen_tab_popup_backward (MetaScreen *screen)
-{
-  g_return_if_fail (screen->tab_popup != NULL);
-
-  meta_ui_tab_popup_backward (screen->tab_popup);
-}
-
-MetaWindow *
-meta_screen_tab_popup_get_selected (MetaScreen *screen)
-{
-  g_return_val_if_fail (screen->tab_popup != NULL, NULL);
-
-  return (MetaWindow *) meta_ui_tab_popup_get_selected (screen->tab_popup);
-}
-
-void
-meta_screen_tab_popup_destroy (MetaScreen *screen)
-{
-  if (screen->tab_popup)
-    {
-      meta_ui_tab_popup_free (screen->tab_popup);
-      screen->tab_popup = NULL;
-    }
-}
-
-void
-meta_screen_workspace_popup_create (MetaScreen    *screen,
-                                    MetaWorkspace *initial_selection)
-{
-  MetaTabEntry *entries;
-  int len;
-  int i;
-  MetaWorkspaceLayout layout;
-  int n_workspaces;
-  int current_workspace;
-
-  if (screen->ws_popup || meta_prefs_get_no_tab_popup ())
-    return;
-
-  current_workspace = meta_workspace_index (screen->active_workspace);
-  n_workspaces = meta_screen_get_n_workspaces (screen);
-
-  meta_screen_calc_workspace_layout (screen, n_workspaces,
-                                     current_workspace, &layout);
-
-  len = layout.grid_area;
-  
-  entries = g_new (MetaTabEntry, len + 1);
-  entries[len].key = NULL;
-  entries[len].title = NULL;
-  entries[len].icon = NULL;
-
-  i = 0;
-  while (i < len)
-    {
-      if (layout.grid[i] >= 0)
-        {
-          MetaWorkspace *workspace;
-          
-          workspace = meta_screen_get_workspace_by_index (screen,
-                                                          layout.grid[i]);
-          
-          entries[i].key = (MetaTabEntryKey) workspace;
-          entries[i].title = meta_workspace_get_name (workspace);
-          entries[i].icon = NULL;
-          entries[i].blank = FALSE;
-          
-          g_assert (entries[i].title != NULL);
-        }
-      else
-        {
-          entries[i].key = NULL;
-          entries[i].title = NULL;
-          entries[i].icon = NULL;
-          entries[i].blank = TRUE;
-        }
-      entries[i].hidden = FALSE;
-      entries[i].demands_attention = FALSE;
-
-      ++i;
-    }
-
-  screen->ws_popup = meta_ui_tab_popup_new (entries,
-                                            screen->number,
-                                            len,
-                                            layout.cols,
-                                            FALSE);
-
-  g_free (entries);
-  meta_screen_free_workspace_layout (&layout);
-
-  meta_ui_tab_popup_select (screen->ws_popup,
-                            (MetaTabEntryKey) initial_selection);
-  meta_ui_tab_popup_set_showing (screen->ws_popup, TRUE);
-}
-
-void
-meta_screen_workspace_popup_select (MetaScreen    *screen,
-                                    MetaWorkspace *workspace)
-{
-  g_return_if_fail (screen->ws_popup != NULL);
-
-  meta_ui_tab_popup_select (screen->ws_popup,
-                            (MetaTabEntryKey) workspace);
-}
-
-MetaWorkspace *
-meta_screen_workspace_popup_get_selected (MetaScreen *screen)
-{
-  g_return_val_if_fail (screen->ws_popup != NULL, NULL);
-
-  return (MetaWorkspace *) meta_ui_tab_popup_get_selected (screen->ws_popup);
-}
-
-void
-meta_screen_workspace_popup_destroy (MetaScreen *screen)
-{
-  if (screen->ws_popup)
-    {
-      meta_ui_tab_popup_free (screen->ws_popup);
-      screen->ws_popup = NULL;
-    }
-}
-
 static gboolean
-meta_screen_tile_preview_update_timeout (gpointer data)
+meta_screen_update_tile_preview_timeout (gpointer data)
 {
  MetaScreen *screen = data;
  MetaWindow *window = screen->display->grab_window;
@@ -1738,22 +1436,6 @@ meta_screen_tile_preview_update_timeout (gpointer data)

  screen->tile_preview_timeout_id = 0;

-  if (!screen->tile_preview)
-    {
-      Window xwindow;
-      gulong create_serial;
-      MetaStackWindow stack_window;
-
-      screen->tile_preview = meta_tile_preview_new (screen->number);
-      xwindow = meta_tile_preview_get_xwindow (screen->tile_preview,
-                                               &create_serial);
-      stack_window.any.type = META_WINDOW_CLIENT_TYPE_X11;
-      stack_window.x11.xwindow = xwindow;
-      meta_stack_tracker_record_add (screen->stack_tracker,
-                                     &stack_window,
-                                     create_serial);
-    }
-
  if (window)
    {
      switch (window->tile_mode)
@@ -1778,12 +1460,16 @@ meta_screen_tile_preview_update_timeout (gpointer data)
  if (needs_preview)
    {
      MetaRectangle tile_rect;
+      int monitor;

+      monitor = meta_window_get_current_tile_monitor_number (window);
      meta_window_get_current_tile_area (window, &tile_rect);
-      meta_tile_preview_show (screen->tile_preview, &tile_rect);
+      meta_compositor_show_tile_preview (screen->display->compositor,
+                                         screen, window, &tile_rect, monitor);
    }
  else
-    meta_tile_preview_hide (screen->tile_preview);
+    meta_compositor_hide_tile_preview (screen->display->compositor,
+                                       screen);

  return FALSE;
 }
@@ -1791,7 +1477,7 @@ meta_screen_tile_preview_update_timeout (gpointer data)
 #define TILE_PREVIEW_TIMEOUT_MS 200

 void
-meta_screen_tile_preview_update (MetaScreen *screen,
+meta_screen_update_tile_preview (MetaScreen *screen,
                                 gboolean    delay)
 {
  if (delay)
@@ -1801,7 +1487,7 @@ meta_screen_tile_preview_update (MetaScreen *screen,

      screen->tile_preview_timeout_id =
        g_timeout_add (TILE_PREVIEW_TIMEOUT_MS,
-                       meta_screen_tile_preview_update_timeout,
+                       meta_screen_update_tile_preview_timeout,
                       screen);
    }
  else
@@ -1809,18 +1495,18 @@ meta_screen_tile_preview_update (MetaScreen *screen,
      if (screen->tile_preview_timeout_id > 0)
        g_source_remove (screen->tile_preview_timeout_id);

-      meta_screen_tile_preview_update_timeout ((gpointer)screen);
+      meta_screen_update_tile_preview_timeout ((gpointer)screen);
    }
 }

 void
-meta_screen_tile_preview_hide (MetaScreen *screen)
+meta_screen_hide_tile_preview (MetaScreen *screen)
 {
  if (screen->tile_preview_timeout_id > 0)
    g_source_remove (screen->tile_preview_timeout_id);

-  if (screen->tile_preview)
-    meta_tile_preview_hide (screen->tile_preview);
+  meta_compositor_hide_tile_preview (screen->display->compositor,
+                                     screen);
 }

 MetaWindow*
@@ -1914,7 +1600,7 @@ meta_screen_get_monitor_for_window (MetaScreen *screen,
 {
  MetaRectangle window_rect;
  
-  meta_window_get_outer_rect (window, &window_rect);
+  meta_window_get_frame_rect (window, &window_rect);

  return meta_screen_get_monitor_for_rect (screen, &window_rect);
 }
--- a/src/core/session.c
+++ b/src/core/session.c
@@ -18,9 +18,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #include <config.h>
--- a/src/core/session.h
+++ b/src/core/session.h
@@ -23,9 +23,7 @@
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef META_SESSION_H
--- a/src/core/stack-tracker.c
+++ b/src/core/stack-tracker.c
@@ -29,9 +29,7 @@
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

 #include <config.h>
@@ -1043,7 +1041,7 @@ stack_tracker_event_received (MetaStackTracker *tracker,

  if (op->any.serial < tracker->xserver_serial)
    {
-      g_warning ("Spurious X event received affecting stack; doing full re-query");
+      /* g_warning ("Spurious X event received affecting stack; doing full re-query"); */
      resync_verified_stack_with_xserver_stack (tracker);
      meta_stack_tracker_dump (tracker);
      return;
--- a/Show More
+++ b/Show More