Bump version to 3.17.4

Update NEWS.
window-x11: Remove duplicated code
2015-07-23 12:41:03 +02:00 · 2015-07-23 12:13:45 +02:00 · 2015-07-23 12:13:45 +02:00 · 2015-07-23 12:13:45 +02:00 · 2015-07-23 12:13:45 +02:00 · 2015-07-22 16:01:13 +02:00
116 changed files with 8327 additions and 7973 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -57,10 +57,8 @@ testgradient
 m4/*
 INSTALL
 mkinstalldirs
-src/mutter-enum-types.[ch]
-src/stamp-mutter-enum-types.h
-src/mutter-marshal.[ch]
-src/stamp-mutter-marshal.h
+meta-enum-types.[ch]
+src/stamp-meta-enum-types.h
 src/meta-dbus-display-config.[ch]
 src/meta-dbus-idle-monitor.[ch]
 src/meta-dbus-login1.[ch]
--- a/Makefile.am
+++ b/Makefile.am
@@ -9,5 +9,3 @@ DISTCLEANFILES = \
 	intltool-update \
 	po/stamp-it \
 	po/.intltool-merge-cache
-
-DISTCHECK_CONFIGURE_FLAGS = --enable-gtk-doc
--- a/69
+++ b/69
@@ -1,3 +1,72 @@
+3.17.4
+======
+* nested: Allow basic configuration of dummy outputs [Jonas; #747089]
+* Send wl_surface.enter and wl_surface.leave on output changes [Jonas; #744453]
+* Improve HiDPI handling on wayland [Jonas; #745655, #744934]
+* Implement compositor-side animated cursors [Carlos; #752342]
+* Misc. bug fixes [Peter, Marek, Carlos, Matthias, Rui; #750816, #751884,
+  #752248, #752551, #752552, #752673, #752674]
+
+Contributors:
+  Jonas Ådahl, Marek Chalupa, Matthias Clasen, Carlos Garnacho, Peter Hutterer,
+  Rui Matos, Florian Müllner, Jasper St. Pierre
+
+3.17.3
+======
+* Add X11/wayland clipboard interaction [Carlos; #738312]
+* Support VM monitor layout hints on wayland [Thomas; #750363]
+* Misc. bug fixes [Rui, Jonas, Olivier, Carlos, Ting-Wei, Peter, Florian;
+  #749994, #750256, #749716, #748705, #750552, #751036, #750007, #751136,
+  #750552, #751471, #751715, #750680]
+
+Contributors:
+  Jonas Ådahl, Dave Airlie, Cosimo Cecchi, Olivier Fourdan, Carlos Garnacho,
+  Thomas Hellstrom, Peter Hutterer, Ting-Wei Lan, Jasper Lievisse Adriaanse,
+  Rui Matos, Florian Müllner, Jasper St. Pierre
+
+Translations:
+  Marek Černocký [cs], Christian Kirbach [de], Pedro Albuquerque [pt]
+
+3.17.2
+======
+* Honor default value for click method setting [Rui; #746290]
+* Add X11/wayland clipboard interoperation [Carlos; #738312]
+* Misc. bug fixes [Rui; #749076, #749711]
+
+Contributors:
+  Carlos Garnacho, Rui Matos, Jasper St. Pierre
+
+3.17.1
+======
+* Add public method to get neighboring monitor [Florian; #633994]
+* Apply the right settings to the right input devices [Carlos; #747886]
+* Fix scroll button setting [Ondrej; #747967]
+* Add support for modal hint on wayland [Jonas; #745720]
+* Don't reset idle time for non-hardware events [Rui; #748541]
+* Misc. bug fixes [Ray, Rui; #748380, #748478]
+
+Contributors:
+  Jonas Ådahl, Carlos Garnacho, Ondrej Holy, Rui Matos, Florian Müllner,
+  Jasper St. Pierre, Ray Strode, Tomeu Vizoso
+
+3.16.1
+======
+* Add function to refresh all background instances [Rui; #739178]
+* Fix swapped scroll methods on wayland [Ondrej; #746870]
+* Manually activate stage to fix accessibility on wayland [Ray, Rui; #746670]
+* Center pointer on primary monitor on startup [Carlos; #746896]
+* wayland: Reword synchronized state application semantics [Jonas; #743617]
+* Ensure input settings are applied on startup [Rui; #747434]
+* Misc. bug fixes [Jonas, Giovanni, Calvin, Ray, Rui; #744932, #746509, #746692,
+  #746510, #746545, #747263]
+
+Contributors:
+  Jonas Ådahl, Giovanni Campagna, Carlos Garnacho, Ondrej Holy, Rui Matos,
+  Jasper St. Pierre, Ray Strode, Calvin Walton
+
+Translations:
+  Khaled Hosny [ar], Marek Černocký [cs]
+
 3.16.0
 ======
 * wayland: Don't skip notifying about initial maximized state [Jonas; #745303]
--- a/configure.ac
+++ b/configure.ac
@@ -1,8 +1,8 @@
 AC_PREREQ(2.62)

 m4_define([mutter_major_version], [3])
-m4_define([mutter_minor_version], [16])
-m4_define([mutter_micro_version], [0])
+m4_define([mutter_minor_version], [17])
+m4_define([mutter_micro_version], [4])

 m4_define([mutter_version],
          [mutter_major_version.mutter_minor_version.mutter_micro_version])
@@ -52,19 +52,6 @@ PKG_PROG_PKG_CONFIG([0.21])
 # Sets GLIB_GENMARSHAL and GLIB_MKENUMS
 AM_PATH_GLIB_2_0()

-#### Integer sizes
-
-AC_CHECK_SIZEOF(char)
-AC_CHECK_SIZEOF(short)
-AC_CHECK_SIZEOF(long)
-AC_CHECK_SIZEOF(int)
-AC_CHECK_SIZEOF(void *)
-AC_CHECK_SIZEOF(long long)
-AC_CHECK_SIZEOF(__int64)
-
-## byte order
-AC_C_BIGENDIAN
-
 CANBERRA_GTK=libcanberra-gtk3
 CANBERRA_GTK_VERSION=0.26

@@ -90,6 +77,7 @@ MUTTER_PC_MODULES="
   xkeyboard-config
   xkbcommon >= 0.4.3
   xkbcommon-x11
+   xrender
   x11-xcb
   xcb-randr
 "
@@ -283,6 +271,8 @@ AC_CHECK_LIB(Xrandr, XRRUpdateConfiguration,

 if test "x$found_randr" = "xyes"; then
   AC_DEFINE(HAVE_RANDR, , [Have the Xrandr extension library])
+   PKG_CHECK_EXISTS([xrandr >= 1.5.0],
+                 AC_DEFINE([HAVE_XRANDR15],[1],[Define if you have support for XRandR 1.5 or greater]))
 fi

 MUTTER_LIBS="$MUTTER_LIBS $RANDR_LIBS $X_LIBS $X_PRE_LIBS -lX11 $X_EXTRA_LIBS -lm"
@@ -329,8 +319,6 @@ if test "x$enable_debug" = "xyes"; then
 	CFLAGS="$CFLAGS -g -O"
 fi

-GTK_DOC_CHECK([1.15], [--flavour no-tmpl])
-
 #### Warnings (last since -Werror can disturb other tests)

 # Stay command-line compatible with the gnome-common configure option. Here
@@ -402,8 +390,6 @@ Makefile
 data/Makefile
 doc/Makefile
 doc/man/Makefile
-doc/reference/Makefile
-doc/reference/meta-docs.sgml
 src/Makefile
 src/libmutter.pc
 src/compositor/plugins/Makefile
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -1,4 +1,4 @@
-SUBDIRS = man reference
+SUBDIRS = man

 EXTRA_DIST = dialogs.txt code-overview.txt \
 	how-to-get-focus-right.txt rationales.txt
--- a/doc/reference/Makefile.am
+++ b/doc/reference/Makefile.am
@@ -1,183 +0,0 @@
-## Process this file with automake to produce Makefile.in
-
-# We require automake 1.6 at least.
-AUTOMAKE_OPTIONS = 1.6
-
-# This is a blank Makefile.am for using gtk-doc.
-# Copy this to your project's API docs directory and modify the variables to
-# suit your project. See the GTK+ Makefiles in gtk+/docs/reference for examples
-# of using the various options.
-
-# The name of the module, e.g. 'glib'.
-DOC_MODULE=meta
-
-# Uncomment for versioned docs and specify the version of the module, e.g. '2'.
-#DOC_MODULE_VERSION=2
-
-
-# The top-level SGML file. You can change this if you want to.
-DOC_MAIN_SGML_FILE=$(DOC_MODULE)-docs.sgml
-
-# Directories containing the source code, relative to $(srcdir).
-# gtk-doc will search all .c and .h files beneath these paths
-# for inline comments documenting functions and macros.
-# e.g. DOC_SOURCE_DIR=../../../gtk ../../../gdk
-DOC_SOURCE_DIR=../../src/
-
-# Extra options to pass to gtkdoc-scangobj. Not normally needed.
-SCANGOBJ_OPTIONS=
-
-# Extra options to supply to gtkdoc-scan.
-# e.g. SCAN_OPTIONS=--deprecated-guards="GTK_DISABLE_DEPRECATED"
-SCAN_OPTIONS=--rebuild-types
-
-# Extra options to supply to gtkdoc-mkdb.
-# e.g. MKDB_OPTIONS=--xml-mode --output-format=xml
-MKDB_OPTIONS=--xml-mode --output-format=xml
-
-# Extra options to supply to gtkdoc-mktmpl
-# e.g. MKTMPL_OPTIONS=--only-section-tmpl
-MKTMPL_OPTIONS=
-
-# Extra options to supply to gtkdoc-mkhtml
-MKHTML_OPTIONS=
-
-# Extra options to supply to gtkdoc-fixref. Not normally needed.
-# e.g. FIXXREF_OPTIONS=--extra-dir=../gdk-pixbuf/html --extra-dir=../gdk/html
-FIXXREF_OPTIONS=
-
-# Used for dependencies. The docs will be rebuilt if any of these change.
-# e.g. HFILE_GLOB=$(top_srcdir)/gtk/*.h
-# e.g. CFILE_GLOB=$(top_srcdir)/gtk/*.c
-HFILE_GLOB=$(top_srcdir)/src/*/*.h
-CFILE_GLOB=$(top_srcdir)/src/*/*.c
-
-# Extra header to include when scanning, which are not under DOC_SOURCE_DIR
-# e.g. EXTRA_HFILES=$(top_srcdir}/contrib/extra.h
-EXTRA_HFILES=
-
-# Header files or dirs to ignore when scanning. Use base file/dir names
-# e.g. IGNORE_HFILES=gtkdebug.h gtkintl.h private_code
-IGNORE_HFILES= \
-	async-getprop.h \
-	atoms.h \
-	bell.h \
-	boxes-private.h \
-	clutter-utils.h \
-	cogl-utils.h \
-	compositor-private.h \
-	constraints.h \
-	core.h \
-	display-private.h \
-	draw-workspace.h \
-	edge-resistance.h \
-	eventqueue.h \
-	frame.h \
-	frames.h \
-	group-private.h \
-	group-props.h \
-	iconcache.h \
-	inlinepixbufs.h \
-	keybindings-private.h \
-	meta-background-actor-private.h \
-	meta-background-group-private.h \
-	meta-dbus-login1.h \
-	meta-module.h \
-	meta-plugin-manager.h \
-	meta-shadow-factory-private.h \
-	meta-texture-rectangle.h \
-	meta-texture-tower.h \
-	meta-window-actor-private.h \
-	meta-window-group.h \
-	meta-window-shape.h \
-	mutter-enum-types.h \
-	mutter-Xatomtype.h \
-	place.h \
-	preview-widget.h \
-	region-utils.h \
-	resizepopup.h \
-	screen-private.h \
-	session.h \
-	stack.h \
-	stack-tracker.h \
-	stamp-mutter-enum-types.h \
-	tabpopup.h \
-	theme.h \
-	theme-private.h \
-	tile-preview.h \
-	ui.h \
-	window-private.h \
-	window-props.h \
-	workspace-private.h \
-	xprops.h \
-	$(NULL)
-
-if !HAVE_NATIVE_BACKEND
-IGNORE_HFILES+= \
-	meta-backend-native.h \
-	meta-barrier-native.h \
-	meta-cursor-renderer-native.h \
-	meta-idle-monitor-native.h \
-	meta-input-settings-native.h \
-	meta-monitor-manager-kms.h \
-	$(NULL)
-endif
-
-if !HAVE_WAYLAND
-IGNORE_HFILES += \
-	meta-surface-actor-wayland.h	\
-	wayland				\
-	$(NULL)
-endif
-
-MKDB_OPTIONS+=--ignore-files="$(IGNORE_HFILES)"
-
-# Images to copy into HTML directory.
-# e.g. HTML_IMAGES=$(top_srcdir)/gtk/stock-icons/stock_about_24.png
-HTML_IMAGES=
-
-# Extra SGML files that are included by $(DOC_MAIN_SGML_FILE).
-# e.g. content_files=running.sgml building.sgml changes-2.0.sgml
-content_files= \
-	mutter-overview.xml \
-	running-mutter.xml \
-	$(NULL)
-
-# SGML files where gtk-doc abbrevations (#GtkWidget) are expanded
-# These files must be listed here *and* in content_files
-# e.g. expand_content_files=running.sgml
-expand_content_files= \
-	mutter-overview.xml \
-	running-mutter.xml \
-	$(NULL)
-
-# CFLAGS and LDFLAGS for compiling gtkdoc-scangobj with your library.
-# Only needed if you are using gtkdoc-scangobj to dynamically query widget
-# signals and properties.
-# e.g. GTKDOC_CFLAGS=-I$(top_srcdir) -I$(top_builddir) $(GTK_DEBUG_FLAGS)
-# e.g. GTKDOC_LIBS=$(top_builddir)/gtk/$(gtktargetlib)
-GTKDOC_CFLAGS=$(MUTTER_CFLAGS)
-GTKDOC_LIBS=$(MUTTER_LIBS) $(top_builddir)/src/libmutter.la
-
-# This includes the standard gtk-doc make rules, copied by gtkdocize.
-include $(top_srcdir)/gtk-doc.make
-
-# Other files to distribute
-# e.g. EXTRA_DIST += version.xml.in
-EXTRA_DIST +=
-
-# Files not to distribute
-# for --rebuild-types in $(SCAN_OPTIONS), e.g. $(DOC_MODULE).types
-# for --rebuild-sections in $(SCAN_OPTIONS) e.g. $(DOC_MODULE)-sections.txt
-DISTCLEANFILES = $(DOC_MODULES).types
-
-# Comment this out if you want 'make check' to test you doc status
-# and run some sanity checks
-if ENABLE_GTK_DOC
-TESTS_ENVIRONMENT = cd $(srcdir) && \
-  DOC_MODULE=$(DOC_MODULE) DOC_MAIN_SGML_FILE=$(DOC_MAIN_SGML_FILE) \
-  SRCDIR=$(abs_srcdir) BUILDDIR=$(abs_builddir)
-#TESTS = $(GTKDOC_CHECK)
-endif
-
-include $(top_srcdir)/git.mk
--- a/doc/reference/meta-docs.sgml.in
+++ b/doc/reference/meta-docs.sgml.in
@@ -1,58 +0,0 @@
-<?xml version="1.0"?>
-<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
-               "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd"
-[
-  <!ENTITY % local.common.attrib "xmlns:xi  CDATA  #FIXED 'http://www.w3.org/2003/XInclude'">
-  <!ENTITY version "@VERSION@">
-]>
-<book id="index">
-  <bookinfo>
-    <title>Mutter Reference Manual</title>
-    <releaseinfo>
-      This document is for Mutter &version;.
-      The latest version of this documentation can be found on-line at
-      <ulink role="online-location" url="http://developer.gnome.org/meta/">http://developer.gnome.org/meta/</ulink>.
-    </releaseinfo>
-  </bookinfo>
-
-  <xi:include href="xml/mutter-overview.xml"/>
-  <xi:include href="xml/running-mutter.xml"/>
-
-  <part id="core-reference">
-    <title>Mutter Core Reference</title>
-    <xi:include href="xml/main.xml"/>
-    <xi:include href="xml/common.xml"/>
-    <xi:include href="xml/prefs.xml"/>
-    <xi:include href="xml/util.xml"/>
-    <xi:include href="xml/errors.xml"/>
-    <xi:include href="xml/meta-plugin.xml"/>
-    <xi:include href="xml/barrier.xml"/>
-    <xi:include href="xml/boxes.xml"/>
-    <xi:include href="xml/compositor.xml"/>
-    <xi:include href="xml/display.xml"/>
-    <xi:include href="xml/group.xml"/>
-    <xi:include href="xml/keybindings.xml"/>
-    <xi:include href="xml/meta-background-actor.xml"/>
-    <xi:include href="xml/meta-shadow-factory.xml"/>
-    <xi:include href="xml/meta-shaped-texture.xml"/>
-    <xi:include href="xml/meta-window-actor.xml"/>
-    <xi:include href="xml/screen.xml"/>
-    <xi:include href="xml/window.xml"/>
-    <xi:include href="xml/workspace.xml"/>
-  </part>
-
-  <chapter id="object-tree">
-    <title>Object Hierarchy</title>
-     <xi:include href="xml/tree_index.sgml"/>
-  </chapter>
-  <index id="api-index-full">
-    <title>API Index</title>
-    <xi:include href="xml/api-index-full.xml"><xi:fallback /></xi:include>
-  </index>
-  <index id="deprecated-api-index" role="deprecated">
-    <title>Index of deprecated API</title>
-    <xi:include href="xml/api-index-deprecated.xml"><xi:fallback /></xi:include>
-  </index>
-
-  <xi:include href="xml/annotation-glossary.xml"><xi:fallback /></xi:include>
-</book>
--- a/doc/reference/meta-sections.txt
+++ b/doc/reference/meta-sections.txt
@@ -1,674 +0,0 @@
-<SECTION>
-<FILE>barrier</FILE>
-<TITLE>MetaBarrier</TITLE>
-MetaBarrier
-MetaBarrierClass
-meta_barrier_is_active
-meta_barrier_destroy
-meta_barrier_release
-MetaBarrierDirection
-MetaBarrierEvent
-<SUBSECTION Standard>
-META_BARRIER
-META_BARRIER_CLASS
-META_BARRIER_GET_CLASS
-META_IS_BARRIER
-META_IS_BARRIER_CLASS
-META_TYPE_BARRIER
-META_TYPE_BARRIER_EVENT
-MetaBarrierPrivate
-meta_barrier_event_get_type
-meta_barrier_get_type
-</SECTION>
-
-<SECTION>
-<FILE>boxes</FILE>
-MetaRectangle
-MetaStrut
-MetaEdgeType
-MetaEdge
-meta_rectangle_copy
-meta_rectangle_free
-meta_rect
-meta_rectangle_area
-meta_rectangle_intersect
-meta_rectangle_equal
-meta_rectangle_union
-meta_rectangle_overlap
-meta_rectangle_vert_overlap
-meta_rectangle_horiz_overlap
-meta_rectangle_could_fit_rect
-meta_rectangle_contains_rect
-<SUBSECTION Standard>
-META_TYPE_RECTANGLE
-meta_rectangle_get_type
-</SECTION>
-
-<SECTION>
-<FILE>common</FILE>
-META_VIRTUAL_CORE_POINTER_ID
-META_VIRTUAL_CORE_KEYBOARD_ID
-MetaFrameFlags
-MetaMenuOp
-MetaWindowMenuFunc
-MetaGrabOp
-MetaCursor
-MetaFrameType
-MetaVirtualModifier
-MetaDirection
-MetaMotionDirection
-MetaSide
-MetaButtonFunction
-MAX_BUTTONS_PER_CORNER
-MetaButtonLayout
-MetaFrameBorders
-meta_frame_borders_clear
-META_ICON_WIDTH
-META_ICON_HEIGHT
-META_MINI_ICON_WIDTH
-META_MINI_ICON_HEIGHT
-META_DEFAULT_ICON_NAME
-META_PRIORITY_RESIZE
-META_PRIORITY_BEFORE_REDRAW
-META_PRIORITY_REDRAW
-META_PRIORITY_PREFS_NOTIFY
-POINT_IN_RECT
-MetaStackLayer
-MetaWindowMenu
-MetaResizePopup
-</SECTION>
-
-<SECTION>
-<FILE>compositor</FILE>
-MetaCompEffect
-MetaCompositor
-meta_compositor_new
-meta_compositor_destroy
-meta_compositor_manage_screen
-meta_compositor_unmanage_screen
-meta_compositor_window_shape_changed
-meta_compositor_process_event
-meta_compositor_filter_keybinding
-meta_compositor_add_window
-meta_compositor_remove_window
-meta_compositor_show_window
-meta_compositor_hide_window
-meta_compositor_switch_workspace
-meta_compositor_maximize_window
-meta_compositor_unmaximize_window
-meta_compositor_sync_window_geometry
-meta_compositor_set_updates_frozen
-meta_compositor_queue_frame_drawn
-meta_compositor_sync_stack
-meta_compositor_sync_screen_size
-meta_compositor_flash_screen
-meta_get_stage_for_screen
-meta_get_overlay_group_for_screen
-meta_get_overlay_window
-meta_get_window_actors
-meta_get_window_group_for_screen
-meta_get_top_window_group_for_screen
-meta_disable_unredirect_for_screen
-meta_enable_unredirect_for_screen
-meta_set_stage_input_region
-meta_empty_stage_input_region
-</SECTION>
-
-<SECTION>
-<FILE>display</FILE>
-MetaTabList
-MetaTabShowType
-meta_XFree
-meta_display_get_compositor_version
-meta_display_get_xinput_opcode
-meta_display_supports_extended_barriers
-meta_display_get_xdisplay
-meta_display_get_compositor
-meta_display_get_screens
-meta_display_has_shape
-meta_display_screen_for_root
-meta_display_get_focus_window
-meta_display_xwindow_is_a_no_focus_window
-meta_display_get_damage_event_base
-meta_display_get_shape_event_base
-meta_display_xserver_time_is_before
-meta_display_get_last_user_time
-meta_display_get_current_time
-meta_display_get_current_time_roundtrip
-meta_display_get_ignored_modifier_mask
-meta_display_get_tab_list
-meta_display_get_tab_next
-meta_display_get_tab_current
-meta_display_begin_grab_op
-meta_display_end_grab_op
-meta_display_get_grab_op
-meta_display_add_keybinding
-meta_display_remove_keybinding
-meta_display_get_keybinding_action
-meta_display_set_input_focus_window
-meta_display_focus_the_no_focus_window
-meta_display_sort_windows_by_stacking
-meta_display_get_leader_window
-meta_display_add_ignored_crossing_serial
-meta_display_unmanage_screen
-meta_display_clear_mouse_mode
-MetaDisplay
-MetaDisplayClass
-<SUBSECTION Standard>
-META_DISPLAY
-META_DISPLAY_CLASS
-META_DISPLAY_GET_CLASS
-META_IS_DISPLAY
-META_IS_DISPLAY_CLASS
-META_TYPE_DISPLAY
-meta_display_get_type
-</SECTION>
-
-<SECTION>
-<FILE>errors</FILE>
-meta_error_trap_push
-meta_error_trap_pop
-meta_error_trap_push_with_return
-meta_error_trap_pop_with_return
-</SECTION>
-
-<SECTION>
-<FILE>group</FILE>
-MetaGroup
-meta_window_get_group
-meta_window_compute_group
-meta_window_shutdown_group
-meta_window_group_leader_changed
-meta_display_lookup_group
-meta_group_list_windows
-meta_group_update_layers
-meta_group_get_startup_id
-meta_group_get_size
-meta_group_property_notify
-</SECTION>
-
-<SECTION>
-<FILE>keybindings</FILE>
-MetaKeyBinding
-META_TYPE_KEY_BINDING
-meta_key_binding_get_name
-meta_key_binding_get_modifiers
-meta_key_binding_get_mask
-meta_key_binding_is_builtin
-meta_keybindings_set_custom_handler
-meta_screen_ungrab_all_keys
-meta_screen_grab_all_keys
-</SECTION>
-
-<SECTION>
-<FILE>main</FILE>
-meta_get_option_context
-meta_init
-meta_run
-meta_get_replace_current_wm
-meta_set_wm_name
-meta_set_gnome_wm_keybindings
-MetaExitCode
-meta_exit
-meta_quit
-</SECTION>
-
-<SECTION>
-<FILE>meta-background</FILE>
-<TITLE>MetaBackground</TITLE>
-MetaBackgroundEffects
-MetaBackground
-MetaBackgroundClass
-meta_background_new
-meta_background_copy
-meta_background_load_gradient
-meta_background_load_color
-meta_background_load_still_frame
-meta_background_load_file_async
-meta_background_load_file_finish
-meta_background_get_filename
-meta_background_get_style
-meta_background_get_shading
-meta_background_get_color
-meta_background_get_second_color
-<SUBSECTION Standard>
-META_BACKGROUND
-META_BACKGROUND_CLASS
-META_BACKGROUND_GET_CLASS
-META_IS_BACKGROUND
-META_IS_BACKGROUND_CLASS
-META_TYPE_BACKGROUND
-MetaBackgroundPrivate
-meta_background_get_type
-</SECTION>
-
-<SECTION>
-<FILE>meta-background-actor</FILE>
-<TITLE>MetaBackgroundActor</TITLE>
-MetaBackgroundActor
-MetaBackgroundActorClass
-meta_background_actor_new_for_screen
-MetaSnippetHook
-meta_background_actor_add_glsl_snippet
-meta_background_actor_set_uniform_float
-<SUBSECTION Standard>
-META_BACKGROUND_ACTOR
-META_BACKGROUND_ACTOR_CLASS
-META_BACKGROUND_ACTOR_GET_CLASS
-META_IS_BACKGROUND_ACTOR
-META_IS_BACKGROUND_ACTOR_CLASS
-META_TYPE_BACKGROUND_ACTOR
-MetaBackgroundActorPrivate
-meta_background_actor_get_type
-</SECTION>
-
-<SECTION>
-<FILE>meta-background-group</FILE>
-<TITLE>MetaBackgroundGroup</TITLE>
-MetaBackgroundGroupClass
-meta_background_group_new
-<SUBSECTION Standard>
-META_BACKGROUND_GROUP
-META_BACKGROUND_GROUP_CLASS
-META_BACKGROUND_GROUP_GET_CLASS
-META_IS_BACKGROUND_GROUP
-META_IS_BACKGROUND_GROUP_CLASS
-META_TYPE_BACKGROUND_GROUP
-MetaBackgroundGroupPrivate
-meta_background_group_get_type
-</SECTION>
-
-<SECTION>
-<FILE>meta-plugin</FILE>
-<TITLE>MetaPlugin</TITLE>
-MetaPlugin
-MetaPluginClass
-MetaPluginInfo
-meta_plugin_running
-meta_plugin_debug_mode
-meta_plugin_get_info
-MetaPluginVersion
-META_PLUGIN_DECLARE
-meta_plugin_switch_workspace_completed
-meta_plugin_minimize_completed
-meta_plugin_unminimize_completed
-meta_plugin_maximize_completed
-meta_plugin_unmaximize_completed
-meta_plugin_map_completed
-meta_plugin_destroy_completed
-MetaModalOptions
-meta_plugin_begin_modal
-meta_plugin_end_modal
-meta_plugin_get_screen
-meta_plugin_manager_set_plugin_type
-<SUBSECTION Standard>
-META_IS_PLUGIN
-META_IS_PLUGIN_CLASS
-META_PLUGIN
-META_PLUGIN_CLASS
-META_PLUGIN_GET_CLASS
-META_TYPE_PLUGIN
-MetaPluginPrivate
-meta_plugin_get_type
-</SECTION>
-
-<SECTION>
-<FILE>meta-shadow-factory</FILE>
-MetaShadowParams
-meta_shadow_factory_get_default
-meta_shadow_factory_set_params
-meta_shadow_factory_get_params
-MetaShadowFactory
-MetaShadowFactoryClass
-<SUBSECTION Standard>
-META_IS_SHADOW_FACTORY
-META_IS_SHADOW_FACTORY_CLASS
-META_SHADOW_FACTORY
-META_SHADOW_FACTORY_CLASS
-META_SHADOW_FACTORY_GET_CLASS
-META_TYPE_SHADOW_FACTORY
-meta_shadow_factory_get_type
-</SECTION>
-
-<SECTION>
-<FILE>meta-shaped-texture</FILE>
-<TITLE>MetaShapedTexture</TITLE>
-MetaShapedTexture
-MetaShapedTextureClass
-meta_shaped_texture_new
-meta_shaped_texture_set_create_mipmaps
-meta_shaped_texture_update_area
-meta_shaped_texture_set_pixmap
-meta_shaped_texture_get_texture
-meta_shaped_texture_set_mask_texture
-meta_shaped_texture_set_clip_region
-meta_shaped_texture_get_image
-<SUBSECTION Standard>
-META_IS_SHAPED_TEXTURE
-META_IS_SHAPED_TEXTURE_CLASS
-META_SHAPED_TEXTURE
-META_SHAPED_TEXTURE_CLASS
-META_SHAPED_TEXTURE_GET_CLASS
-META_TYPE_SHAPED_TEXTURE
-MetaShapedTexturePrivate
-meta_shaped_texture_get_type
-</SECTION>
-
-<SECTION>
-<FILE>meta-window-actor</FILE>
-<TITLE>MetaWindowActor</TITLE>
-MetaWindowActor
-MetaWindowActorClass
-meta_window_actor_get_x_window
-meta_window_actor_get_workspace
-meta_window_actor_get_meta_window
-meta_window_actor_get_texture
-meta_window_actor_is_override_redirect
-meta_window_actor_get_description
-meta_window_actor_showing_on_its_workspace
-meta_window_actor_is_destroyed
-<SUBSECTION Standard>
-META_IS_WINDOW_ACTOR
-META_IS_WINDOW_ACTOR_CLASS
-META_TYPE_WINDOW_ACTOR
-META_WINDOW_ACTOR
-META_WINDOW_ACTOR_CLASS
-META_WINDOW_ACTOR_GET_CLASS
-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
-MetaPrefsChangedFunc
-meta_prefs_add_listener
-meta_prefs_remove_listener
-meta_prefs_init
-meta_prefs_override_preference_schema
-meta_preference_to_string
-meta_prefs_get_mouse_button_mods
-meta_prefs_get_mouse_button_resize
-meta_prefs_get_mouse_button_menu
-meta_prefs_get_focus_mode
-meta_prefs_get_focus_new_windows
-meta_prefs_get_attach_modal_dialogs
-meta_prefs_get_raise_on_click
-meta_prefs_get_theme
-meta_prefs_get_titlebar_font
-meta_prefs_get_num_workspaces
-meta_prefs_get_dynamic_workspaces
-meta_prefs_get_disable_workarounds
-meta_prefs_get_auto_raise
-meta_prefs_get_auto_raise_delay
-meta_prefs_get_focus_change_on_pointer_rest
-meta_prefs_get_gnome_accessibility
-meta_prefs_get_gnome_animations
-meta_prefs_get_edge_tiling
-meta_prefs_get_auto_maximize
-meta_prefs_get_button_layout
-meta_prefs_get_action_double_click_titlebar
-meta_prefs_get_action_middle_click_titlebar
-meta_prefs_get_action_right_click_titlebar
-meta_prefs_set_num_workspaces
-meta_prefs_get_workspace_name
-meta_prefs_change_workspace_name
-meta_prefs_get_cursor_theme
-meta_prefs_get_cursor_size
-meta_prefs_get_compositing_manager
-meta_prefs_get_force_fullscreen
-meta_prefs_set_force_fullscreen
-meta_prefs_get_workspaces_only_on_primary
-meta_prefs_get_no_tab_popup
-meta_prefs_set_no_tab_popup
-meta_prefs_get_draggable_border_width
-meta_prefs_get_ignore_request_hide_titlebar
-meta_prefs_set_ignore_request_hide_titlebar
-MetaKeyBindingAction
-MetaKeyBindingFlags
-MetaKeyCombo
-MetaKeyHandlerFunc
-meta_prefs_get_keybindings
-meta_prefs_get_keybinding_action
-meta_prefs_get_window_binding
-meta_prefs_get_overlay_binding
-meta_prefs_get_visual_bell
-meta_prefs_bell_is_audible
-meta_prefs_get_visual_bell_type
-MetaKeyHandler
-<SUBSECTION Standard>
-meta_key_binding_get_type
-</SECTION>
-
-<SECTION>
-<FILE>screen</FILE>
-MetaScreen
-MetaScreenClass
-meta_screen_get_screen_number
-meta_screen_get_display
-meta_screen_get_xroot
-meta_screen_get_size
-meta_screen_get_compositor_data
-meta_screen_set_compositor_data
-meta_screen_for_x_screen
-meta_screen_set_cm_selection
-meta_screen_unset_cm_selection
-meta_screen_get_startup_sequences
-meta_screen_get_workspaces
-meta_screen_get_n_workspaces
-meta_screen_get_workspace_by_index
-meta_screen_remove_workspace
-meta_screen_append_new_workspace
-meta_screen_get_active_workspace_index
-meta_screen_get_active_workspace
-meta_screen_get_n_monitors
-meta_screen_get_primary_monitor
-meta_screen_get_current_monitor
-meta_screen_get_monitor_geometry
-meta_screen_get_monitor_index_for_rect
-meta_screen_focus_default_window
-MetaScreenCorner
-meta_screen_override_workspace_layout
-<SUBSECTION Standard>
-META_IS_SCREEN
-META_IS_SCREEN_CLASS
-META_SCREEN
-META_SCREEN_CLASS
-META_SCREEN_GET_CLASS
-META_TYPE_SCREEN
-meta_screen_get_type
-</SECTION>
-
-<SECTION>
-<FILE>util</FILE>
-meta_is_verbose
-meta_set_verbose
-meta_is_debugging
-meta_set_debugging
-meta_is_syncing
-meta_set_syncing
-meta_set_replace_current_wm
-meta_debug_spew_real
-meta_verbose_real
-meta_bug
-meta_warning
-meta_fatal
-MetaDebugTopic
-meta_topic_real
-meta_add_verbose_topic
-meta_remove_verbose_topic
-meta_push_no_msg_prefix
-meta_pop_no_msg_prefix
-meta_unsigned_long_equal
-meta_unsigned_long_hash
-meta_frame_type_to_string
-meta_gravity_to_string
-_
-N_
-meta_g_utf8_strndup
-meta_free_gslist_and_elements
-meta_show_dialog
-meta_debug_spew
-meta_verbose
-meta_topic
-MetaLaterType
-meta_later_add
-meta_later_remove
-</SECTION>
-
-<SECTION>
-<FILE>window</FILE>
-MetaWindow
-MetaWindowClass
-MetaWindowType
-MetaMaximizeFlags
-meta_window_get_frame
-meta_window_has_focus
-meta_window_appears_focused
-meta_window_is_shaded
-meta_window_is_monitor_sized
-meta_window_is_override_redirect
-meta_window_is_skip_taskbar
-meta_window_get_rect
-meta_window_get_buffer_rect
-meta_window_get_frame_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
-meta_window_get_window_type
-meta_window_get_window_type_atom
-meta_window_get_workspace
-meta_window_get_monitor
-meta_window_is_on_all_workspaces
-meta_window_located_on_workspace
-meta_window_is_hidden
-meta_window_activate
-meta_window_activate_with_workspace
-meta_window_get_description
-meta_window_get_wm_class
-meta_window_get_wm_class_instance
-meta_window_showing_on_its_workspace
-meta_window_get_gtk_application_id
-meta_window_get_gtk_unique_bus_name
-meta_window_get_gtk_application_object_path
-meta_window_get_gtk_window_object_path
-meta_window_get_gtk_app_menu_object_path
-meta_window_get_gtk_menubar_object_path
-meta_window_move
-meta_window_move_frame
-meta_window_move_resize_frame
-meta_window_move_to_monitor
-meta_window_resize
-meta_window_set_demands_attention
-meta_window_unset_demands_attention
-meta_window_get_startup_id
-meta_window_change_workspace_by_index
-meta_window_change_workspace
-meta_window_get_compositor_private
-meta_window_set_compositor_private
-meta_window_configure_notify
-meta_window_get_role
-meta_window_get_layer
-meta_window_find_root_ancestor
-meta_window_is_ancestor_of_transient
-MetaWindowForeachFunc
-meta_window_foreach_transient
-meta_window_foreach_ancestor
-meta_window_get_maximized
-meta_window_is_fullscreen
-meta_window_is_on_primary_monitor
-meta_window_requested_bypass_compositor
-meta_window_requested_dont_bypass_compositor
-meta_window_is_mapped
-meta_window_toplevel_is_mapped
-meta_window_get_icon_geometry
-meta_window_set_icon_geometry
-meta_window_maximize
-meta_window_unmaximize
-meta_window_minimize
-meta_window_unminimize
-meta_window_raise
-meta_window_lower
-meta_window_get_title
-meta_window_get_transient_for
-meta_window_get_transient_for_as_xid
-meta_window_delete
-meta_window_get_stable_sequence
-meta_window_get_user_time
-meta_window_get_pid
-meta_window_get_client_machine
-meta_window_is_remote
-meta_window_is_modal
-meta_window_is_attached_dialog
-meta_window_get_mutter_hints
-meta_window_get_frame_type
-meta_window_get_frame_bounds
-meta_window_get_tile_match
-meta_window_make_fullscreen
-meta_window_unmake_fullscreen
-meta_window_make_above
-meta_window_unmake_above
-meta_window_shade
-meta_window_unshade
-meta_window_stick
-meta_window_unstick
-meta_window_kill
-meta_window_focus
-meta_window_check_alive
-meta_window_get_work_area_current_monitor
-meta_window_get_work_area_for_monitor
-meta_window_get_work_area_all_monitors
-meta_window_begin_grab_op
-<SUBSECTION Standard>
-META_IS_WINDOW
-META_IS_WINDOW_CLASS
-META_TYPE_WINDOW
-META_WINDOW
-META_WINDOW_CLASS
-META_WINDOW_GET_CLASS
-meta_window_get_type
-</SECTION>
-
-<SECTION>
-<FILE>workspace</FILE>
-MetaWorkspace
-MetaWorkspaceClass
-meta_workspace_index
-meta_workspace_get_screen
-meta_workspace_list_windows
-meta_workspace_get_work_area_for_monitor
-meta_workspace_get_work_area_all_monitors
-meta_workspace_activate
-meta_workspace_activate_with_focus
-meta_workspace_update_window_hints
-meta_workspace_set_builtin_struts
-meta_workspace_get_neighbor
-<SUBSECTION Standard>
-META_IS_WORKSPACE
-META_IS_WORKSPACE_CLASS
-META_TYPE_WORKSPACE
-META_WORKSPACE
-META_WORKSPACE_CLASS
-META_WORKSPACE_GET_CLASS
-meta_workspace_get_type
-</SECTION>
-
--- a/doc/reference/mutter-overview.xml
+++ b/doc/reference/mutter-overview.xml
@@ -1,15 +0,0 @@
-<part id="mutter-overview">
-
-  <title>Overview</title>
-
-  <partintro>
-
-    <para>Mutter is a GObject-based library for creating compositing window managers.</para>
-
-    <para>Compositors that wish to use Mutter must implement a subclass of #MetaPlugin and register it with meta_plugin_manager_set_plugin_type() before calling meta_init() but after g_type_init().</para>
-
-    <para>#MetaPlugin provides virtual functions that allow to override default behavior in the window management code, such as the effect to perform when a window is created or when switching workspaces.</para>
-
-  </partintro>
-
-</part>
--- a/doc/reference/running-mutter.xml
+++ b/doc/reference/running-mutter.xml
@@ -1,100 +0,0 @@
-<part id="running-mutter">
-
-  <title>Running Mutter</title>
-
-  <partintro>
-
-    <section id="environment-variables">
-      <title>Environment Variables</title>
-
-      <para>
-        Mutter automatically checks environment variables during
-        its initialization. These environment variables are meant
-        as debug tools or overrides for default behaviours:
-      </para>
-
-      <variablelist>
-        <varlistentry>
-          <term>MUTTER_VERBOSE</term>
-          <listitem>
-            <para>Enable verbose mode, in which more information is printed to the console. Mutter needs to be built with the --enable-verbose-mode option (enabled by default). For more fine-grained control of the output, see meta_add_verbose_topic().</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>MUTTER_DEBUG</term>
-          <listitem>
-            <para>Traps and prints X errors to the console.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>MUTTER_G_FATAL_WARNINGS</term>
-          <listitem>
-            <para>Causes any logging from the domains Mutter, Gtk, Gdk, Pango or GLib to terminate the process (only when using the log functions in GLib).</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>MUTTER_USE_LOGFILE</term>
-          <listitem>
-            <para>Log all messages to a temporary file.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>MUTTER_DEBUG_XINERAMA</term>
-          <listitem>
-            <para>Log extra information about support of the XINERAMA extension.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>MUTTER_DEBUG_SM</term>
-          <listitem>
-            <para>Log extra information about session management.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>MUTTER_DEBUG_BUTTON_GRABS</term>
-          <listitem>
-            <para>Log extra information about button grabs.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>MUTTER_SYNC</term>
-          <listitem>
-            <para>Call XSync after each X call.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>MUTTER_DISPLAY</term>
-          <listitem>
-            <para>Name of the X11 display to use.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>META_DISABLE_MIPMAPS</term>
-          <listitem>
-            <para>Disable use of mipmaps for the textures that back window pixmaps.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>MUTTER_USE_STATIC_GRAVITY</term>
-          <listitem>
-            <para>Enable support for clients with static bit-gravity.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>MUTTER_WM_CLASS_FILTER</term>
-          <listitem>
-            <para>Comma-separated list of WM_CLASS names to which to restrict Mutter to.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>MUTTER_DISABLE_FALLBACK_COLOR</term>
-          <listitem>
-            <para>Disable fallback for themed colors, for easier detection of typographical errors.</para>
-          </listitem>
-        </varlistentry>
-      </variablelist>
-
-    </section>
-
-  </partintro>
-</part>
--- a/po/ar.po
+++ b/po/ar.po
--- a/po/cs.po
+++ b/po/cs.po
@@ -12,7 +12,7 @@ msgstr ""
 "Project-Id-Version: mutter\n"
 "Report-Msgid-Bugs-To: http://bugzilla.gnome.org/enter_bug.cgi?"
 "product=mutter&keywords=I18N+L10N&component=general\n"
-"POT-Creation-Date: 2015-01-06 22:57+0000\n"
+"POT-Creation-Date: 2015-03-24 23:25+0000\n"
 "PO-Revision-Date: 2014-09-22 15:01+0200\n"
 "Last-Translator: Petr Kovar <pknbe@volny.cz>\n"
 "Language-Team: Czech <gnome-cs-list@gnome.org>\n"
@@ -30,91 +30,91 @@ msgstr "Navigace"

 #: ../data/50-mutter-navigation.xml.in.h:2
 msgid "Move window to workspace 1"
-msgstr "Přesunout okno na plochu 1"
+msgstr "Přesunout okno na pracovní plochu 1"

 #: ../data/50-mutter-navigation.xml.in.h:3
 msgid "Move window to workspace 2"
-msgstr "Přesunout okno na plochu 2"
+msgstr "Přesunout okno na pracovní plochu 2"

 #: ../data/50-mutter-navigation.xml.in.h:4
 msgid "Move window to workspace 3"
-msgstr "Přesunout okno na plochu 3"
+msgstr "Přesunout okno na pracovní plochu 3"

 #: ../data/50-mutter-navigation.xml.in.h:5
 msgid "Move window to workspace 4"
-msgstr "Přesunout okno na plochu 4"
+msgstr "Přesunout okno na pracovní plochu 4"

 #: ../data/50-mutter-navigation.xml.in.h:6
 msgid "Move window to last workspace"
-msgstr "Přesunout okno na poslední plochu"
+msgstr "Přesunout okno na poslední pracovní plochu"

 #: ../data/50-mutter-navigation.xml.in.h:7
 msgid "Move window one workspace to the left"
-msgstr "Přesunout okno o plochu doleva"
+msgstr "Přesunout okno o jednu pracovní plochu doleva"

 #: ../data/50-mutter-navigation.xml.in.h:8
 msgid "Move window one workspace to the right"
-msgstr "Přesunout okno o plochu doprava"
+msgstr "Přesunout okno o jednu pracovní plochu doprava"

 #: ../data/50-mutter-navigation.xml.in.h:9
 msgid "Move window one workspace up"
-msgstr "Přesunout okno o plochu nahoru"
+msgstr "Přesunout okno o jednu pracovní plochu nahoru"

 #: ../data/50-mutter-navigation.xml.in.h:10
 msgid "Move window one workspace down"
-msgstr "Přesunout okno o plochu dolů"
+msgstr "Přesunout okno o jednu pracovní plochu dolů"

 #: ../data/50-mutter-navigation.xml.in.h:11
 msgid "Move window one monitor to the left"
-msgstr "Přesunout okno o monitor doleva"
+msgstr "Přesunout okno o jeden monitor doleva"

 #: ../data/50-mutter-navigation.xml.in.h:12
 msgid "Move window one monitor to the right"
-msgstr "Přesunout okno o monitor doprava"
+msgstr "Přesunout okno o jeden monitor doprava"

 #: ../data/50-mutter-navigation.xml.in.h:13
 msgid "Move window one monitor up"
-msgstr "Přesunout okno o monitor nahoru"
+msgstr "Přesunout okno o jeden monitor nahoru"

 #: ../data/50-mutter-navigation.xml.in.h:14
 msgid "Move window one monitor down"
-msgstr "Přesunout okno o monitor dolů"
+msgstr "Přesunout okno o jeden monitor dolů"

 #: ../data/50-mutter-navigation.xml.in.h:15
 msgid "Switch applications"
-msgstr "Přepnout mezi aplikacemi"
+msgstr "Přepnout do jiné aplikace"

 #: ../data/50-mutter-navigation.xml.in.h:16
 msgid "Switch to previous application"
-msgstr "Přepnout na předchozí aplikaci"
+msgstr "Přepnout do předchozí aplikaci"

 #: ../data/50-mutter-navigation.xml.in.h:17
 msgid "Switch windows"
-msgstr "Přepnout mezi okny"
+msgstr "Přepnout do jiného okna"

 #: ../data/50-mutter-navigation.xml.in.h:18
 msgid "Switch to previous window"
-msgstr "Přepnout na předchozí okno"
+msgstr "Přepnout do minulého okna"

 #: ../data/50-mutter-navigation.xml.in.h:19
 msgid "Switch windows of an application"
-msgstr "Přepnout mezi okny aplikace"
+msgstr "Přepnout do jiného okna aplikace"

 #: ../data/50-mutter-navigation.xml.in.h:20
 msgid "Switch to previous window of an application"
-msgstr "Přepnout na předchozí okno aplikace"
+msgstr "Přepnout do předchozího okna aplikace"

 #: ../data/50-mutter-navigation.xml.in.h:21
 msgid "Switch system controls"
-msgstr "Přepnout mezi systémovými ovládacími prvky"
+msgstr "Přepnout na systémový ovládací prvek"

 #: ../data/50-mutter-navigation.xml.in.h:22
 msgid "Switch to previous system control"
-msgstr "Přepnout na předchozí systémové ovládací prvky"
+msgstr "Přepnout na minulý systémový ovládací prvek"

 #: ../data/50-mutter-navigation.xml.in.h:23
 msgid "Switch windows directly"
-msgstr "Přepnout přímo mezi okny"
+msgstr "Přepnout do minulého okna"

 #: ../data/50-mutter-navigation.xml.in.h:24
 msgid "Switch directly to previous window"
@@ -122,15 +122,15 @@ msgstr "Přepnout přímo na předchozí okno"

 #: ../data/50-mutter-navigation.xml.in.h:25
 msgid "Switch windows of an app directly"
-msgstr "Přepnout přímo mezi okny aplikace"
+msgstr "Přepnout do jiného okna aplikace"

 #: ../data/50-mutter-navigation.xml.in.h:26
 msgid "Switch directly to previous window of an app"
-msgstr "Přepnout přímo na předchozí okno aplikace"
+msgstr "Přepnout do předchozího okna aplikace"

 #: ../data/50-mutter-navigation.xml.in.h:27
 msgid "Switch system controls directly"
-msgstr "Přepnout přímo mezi systémovými ovládacími prvky"
+msgstr "Přepnout na minulý systémový ovládací prvek"

 #: ../data/50-mutter-navigation.xml.in.h:28
 msgid "Switch directly to previous system control"
@@ -198,7 +198,7 @@ msgstr "Aktivovat nabídku okna"

 #: ../data/50-mutter-windows.xml.in.h:3
 msgid "Toggle fullscreen mode"
-msgstr "Přepnout režim na celou obrazovku"
+msgstr "Přepnout režim celé obrazovky"

 #: ../data/50-mutter-windows.xml.in.h:4
 msgid "Toggle maximization state"
@@ -210,7 +210,7 @@ msgstr "Maximalizovat okno"

 #: ../data/50-mutter-windows.xml.in.h:6
 msgid "Restore window"
-msgstr "Obnovit okno"
+msgstr "Obnovit velikost okna"

 #: ../data/50-mutter-windows.xml.in.h:7
 msgid "Toggle shaded state"
@@ -234,20 +234,20 @@ msgstr "Změnit velikost okna"

 #: ../data/50-mutter-windows.xml.in.h:12
 msgid "Toggle window on all workspaces or one"
-msgstr "Přepnout výskyt okna na všech plochách nebo jen na jedné"
+msgstr "Přepnout okno na všechny/jednu pracovní plochu"

 #: ../data/50-mutter-windows.xml.in.h:13
 msgid "Raise window if covered, otherwise lower it"
 msgstr ""
-"Přenést okno do popředí, pokud je zakryté, jinak jej odsunout do pozadí"
+"Když je okno zakryté vynést jej do popředí, jinak odsunout do pozadí"

 #: ../data/50-mutter-windows.xml.in.h:14
 msgid "Raise window above other windows"
-msgstr "Přenést okno do popředí nad ostatní okna"
+msgstr "Vynést okno do popředí nad ostatní okna"

 #: ../data/50-mutter-windows.xml.in.h:15
 msgid "Lower window below other windows"
-msgstr "Odsunout okno do pozadí pod ostatní okna"
+msgstr "Odsunout okno do pozadí za ostatní okna"

 #: ../data/50-mutter-windows.xml.in.h:16
 msgid "Maximize window vertically"
@@ -259,11 +259,11 @@ msgstr "Maximalizovat okno vodorovně"

 #: ../data/50-mutter-windows.xml.in.h:18
 msgid "View split on left"
-msgstr "Zobrazit rozdělení nalevo"
+msgstr "Rozdělit okno přes levou půlku obrazovky"

 #: ../data/50-mutter-windows.xml.in.h:19
 msgid "View split on right"
-msgstr "Zobrazit rozdělení napravo"
+msgstr "Rozdělit okno přes pravou půlku obrazovky"

 #: ../data/mutter.desktop.in.h:1
 msgid "Mutter"
@@ -437,22 +437,42 @@ msgstr "Přepnout na VT 6"
 msgid "Switch to VT 7"
 msgstr "Přepnout na VT 7"

-#: ../src/backends/meta-monitor-manager.c:351
+#: ../data/org.gnome.mutter.wayland.gschema.xml.in.h:8
+msgid "Switch to VT 8"
+msgstr "Přepnout na VT 8"
+
+#: ../data/org.gnome.mutter.wayland.gschema.xml.in.h:9
+msgid "Switch to VT 9"
+msgstr "Přepnout na VT 9"
+
+#: ../data/org.gnome.mutter.wayland.gschema.xml.in.h:10
+msgid "Switch to VT 10"
+msgstr "Přepnout na VT 10"
+
+#: ../data/org.gnome.mutter.wayland.gschema.xml.in.h:11
+msgid "Switch to VT 11"
+msgstr "Přepnout na VT 11"
+
+#: ../data/org.gnome.mutter.wayland.gschema.xml.in.h:12
+msgid "Switch to VT 12"
+msgstr "Přepnout na VT 12"
+
+#: ../src/backends/meta-monitor-manager.c:364
 msgid "Built-in display"
 msgstr "Vestavěný displej"

-#: ../src/backends/meta-monitor-manager.c:378
+#: ../src/backends/meta-monitor-manager.c:391
 msgid "Unknown"
 msgstr "Neznámý"

-#: ../src/backends/meta-monitor-manager.c:380
+#: ../src/backends/meta-monitor-manager.c:393
 msgid "Unknown Display"
 msgstr "Neznámý displej"

 #. TRANSLATORS: this is a monitor vendor name, followed by a
 #. * size in inches, like 'Dell 15"'
 #.
-#: ../src/backends/meta-monitor-manager.c:388
+#: ../src/backends/meta-monitor-manager.c:401
 #, c-format
 msgid "%s %s"
 msgstr "%s %s"
@@ -495,7 +515,7 @@ msgstr "_Počkat"
 msgid "_Force Quit"
 msgstr "_Vynutit ukončení"

-#: ../src/core/display.c:561
+#: ../src/core/display.c:562
 #, c-format
 msgid "Failed to open X Window System display '%s'\n"
 msgstr "Nelze otevřít displej X Window System „%s“\n"
@@ -556,7 +576,7 @@ msgstr "Vypíše verzi"
 msgid "Mutter plugin to use"
 msgstr "Zásuvný modul Mutter, který se má použít"

-#: ../src/core/prefs.c:2015
+#: ../src/core/prefs.c:2004
 #, c-format
 msgid "Workspace %d"
 msgstr "Plocha %d"
@@ -587,7 +607,7 @@ msgstr ""
 "Tato okna nepodporují &quot;ukládání aktuálního nastavení&quot; a po vašem "
 "příštím přihlášení je budete muset spustit ručně."

-#: ../src/x11/window-props.c:558
+#: ../src/x11/window-props.c:549
 #, c-format
 msgid "%s (on %s)"
 msgstr "%s (na %s)"
--- a/po/de.po
+++ b/po/de.po
--- a/po/pt.po
+++ b/po/pt.po
--- a/src/Makefile-tests.am
+++ b/src/Makefile-tests.am
@@ -41,9 +41,6 @@ endif
 # Some random test programs for bits of the code

 testboxes_SOURCES = core/testboxes.c
-testasyncgetprop_SOURCES = x11/testasyncgetprop.c
-
-noinst_PROGRAMS+=testboxes testasyncgetprop
-
 testboxes_LDADD = $(MUTTER_LIBS) libmutter.la
-testasyncgetprop_LDADD = $(MUTTER_LIBS) libmutter.la
+
+noinst_PROGRAMS += testboxes
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -39,8 +39,8 @@ mutter_built_sources = \
 	$(dbus_idle_built_sources)		\
 	$(dbus_display_config_built_sources)	\
 	$(dbus_login1_built_sources)		\
-	mutter-enum-types.h 			\
-	mutter-enum-types.c			\
+	meta/meta-enum-types.h			\
+	meta-enum-types.c			\
 	$(NULL)

 if HAVE_WAYLAND
@@ -132,7 +132,6 @@ libmutter_la_SOURCES =				\
 	compositor/meta-plugin-manager.c	\
 	compositor/meta-plugin-manager.h	\
 	compositor/meta-shadow-factory.c	\
-	compositor/meta-shadow-factory-private.h	\
 	compositor/meta-shaped-texture.c	\
 	compositor/meta-shaped-texture-private.h 	\
 	compositor/meta-surface-actor.c		\
@@ -148,7 +147,6 @@ libmutter_la_SOURCES =				\
 	compositor/meta-window-group.c		\
 	compositor/meta-window-group.h		\
 	compositor/meta-window-shape.c		\
-	compositor/meta-window-shape.h		\
 	compositor/region-utils.c		\
 	compositor/region-utils.h		\
 	meta/compositor.h			\
@@ -159,6 +157,7 @@ libmutter_la_SOURCES =				\
 	meta/meta-plugin.h			\
 	meta/meta-shadow-factory.h		\
 	meta/meta-window-actor.h		\
+	meta/meta-window-shape.h		\
 	meta/compositor-mutter.h 		\
 	core/constraints.c			\
 	core/constraints.h			\
@@ -210,10 +209,7 @@ libmutter_la_SOURCES =				\
 	meta/theme.h				\
 	ui/theme-private.h			\
 	ui/ui.c					\
-	x11/iconcache.c				\
-	x11/iconcache.h				\
-	x11/async-getprop.c			\
-	x11/async-getprop.h			\
+	x11/atomnames.h				\
 	x11/events.c				\
 	x11/events.h				\
 	x11/group-private.h			\
@@ -221,6 +217,8 @@ libmutter_la_SOURCES =				\
 	x11/group-props.h			\
 	x11/group.c				\
 	meta/group.h				\
+	x11/iconcache.c				\
+	x11/iconcache.h				\
 	x11/session.c				\
 	x11/session.h				\
 	x11/window-props.c			\
@@ -242,6 +240,8 @@ libmutter_la_SOURCES +=				\
 	wayland/meta-wayland-private.h		\
 	wayland/meta-xwayland.c			\
 	wayland/meta-xwayland.h			\
+	wayland/meta-xwayland-selection.c	\
+	wayland/meta-xwayland-selection-private.h	\
 	wayland/meta-xwayland-private.h		\
 	wayland/meta-wayland-buffer.c      	\
 	wayland/meta-wayland-buffer.h      	\
@@ -249,6 +249,7 @@ libmutter_la_SOURCES +=				\
 	wayland/meta-wayland-region.h      	\
 	wayland/meta-wayland-data-device.c      \
 	wayland/meta-wayland-data-device.h      \
+	wayland/meta-wayland-data-device-private.h	\
 	wayland/meta-wayland-keyboard.c		\
 	wayland/meta-wayland-keyboard.h		\
 	wayland/meta-wayland-pointer.c		\
@@ -265,8 +266,8 @@ libmutter_la_SOURCES +=				\
 	wayland/meta-wayland-versions.h		\
 	wayland/meta-wayland-outputs.c		\
 	wayland/meta-wayland-outputs.h		\
-	wayland/window-wayland.c		\
-	wayland/window-wayland.h		\
+	wayland/meta-window-wayland.c		\
+	wayland/meta-window-wayland.h		\
 	$(NULL)
 endif

@@ -322,6 +323,7 @@ libmutterinclude_headers =			\
 	meta/meta-shaped-texture.h		\
 	meta/meta-shadow-factory.h		\
 	meta/meta-window-actor.h		\
+	meta/meta-window-shape.h		\
 	meta/prefs.h				\
 	meta/screen.h				\
 	meta/theme.h				\
@@ -332,22 +334,18 @@ libmutterinclude_headers =			\
 	$(NULL)

 libmutterinclude_built_headers =		\
-	meta/meta-version.h
+	meta/meta-version.h			\
+	meta/meta-enum-types.h			\
+	$(NULL)

 libmutterinclude_base_headers =			\
 	$(libmutterinclude_headers)		\
 	$(libmutterinclude_built_headers)

-# Excluded from scanning for introspection but installed
-# atomnames.h: macros cause problems for scanning process
-libmutterinclude_extra_headers =		\
-	meta/atomnames.h
-
 libmutterincludedir = $(includedir)/mutter/meta

 libmutterinclude_HEADERS =			\
-	$(libmutterinclude_headers)		\
-	$(libmutterinclude_extra_headers)
+	$(libmutterinclude_headers)

 nodist_libmutterinclude_HEADERS =		\
 	$(libmutterinclude_built_headers)
@@ -390,7 +388,6 @@ Meta-$(api_version).gir: libmutter.la
@META_GIR@_CFLAGS = $(AM_CPPFLAGS)
@META_GIR@_LIBS = libmutter.la
@META_GIR@_FILES =				\
-	mutter-enum-types.h			\
 	$(libmutterinclude_base_headers)	\
 	$(filter %.c,$(libmutter_la_SOURCES) $(nodist_libmutter_la_SOURCES))
@META_GIR@_SCANNERFLAGS = --warn-all --warn-error
@@ -413,8 +410,8 @@ pkgconfig_DATA = libmutter.pc
 EXTRA_DIST +=					\
 	$(wayland_protocols)			\
 	libmutter.pc.in				\
-	mutter-enum-types.h.in			\
-	mutter-enum-types.c.in			\
+	meta-enum-types.h.in			\
+	meta-enum-types.c.in			\
 	org.freedesktop.login1.xml		\
 	org.gnome.Mutter.DisplayConfig.xml	\
 	org.gnome.Mutter.IdleMonitor.xml	\
@@ -424,26 +421,26 @@ BUILT_SOURCES =					\
 	$(mutter_built_sources)			\
 	$(libmutterinclude_built_headers)

-MUTTER_STAMP_FILES = stamp-mutter-enum-types.h
+MUTTER_STAMP_FILES = stamp-meta-enum-types.h
 CLEANFILES += $(MUTTER_STAMP_FILES)

-mutter-enum-types.h: stamp-mutter-enum-types.h Makefile
+meta/meta-enum-types.h: stamp-meta-enum-types.h Makefile
 	@true
-stamp-mutter-enum-types.h: $(libmutterinclude_base_headers) mutter-enum-types.h.in
+stamp-meta-enum-types.h: $(libmutterinclude_headers) meta-enum-types.h.in
 	$(AM_V_GEN) ( cd $(srcdir) && \
 	  $(GLIB_MKENUMS) \
-	    --template mutter-enum-types.h.in \
+	    --template meta-enum-types.h.in \
 	  $(libmutterinclude_base_headers) ) >> xgen-teth && \
-	(cmp -s xgen-teth mutter-enum-types.h || cp xgen-teth mutter-enum-types.h) && \
+	(cmp -s xgen-teth meta/meta-enum-types.h || cp xgen-teth meta/meta-enum-types.h) && \
 	rm -f xgen-teth && \
 	echo timestamp > $(@F)

-mutter-enum-types.c: stamp-mutter-enum-types.h mutter-enum-types.c.in
+meta-enum-types.c: stamp-meta-enum-types.h meta-enum-types.c.in
 	  $(AM_V_GEN) ( cd $(srcdir) && \
 	  $(GLIB_MKENUMS) \
-	    --template mutter-enum-types.c.in \
+	    --template meta-enum-types.c.in \
 	  $(libmutterinclude_base_headers) ) >> xgen-tetc && \
-	cp xgen-tetc mutter-enum-types.c && \
+	cp xgen-tetc meta-enum-types.c && \
 	rm -f xgen-tetc

 dbus_display_config_built_sources = meta-dbus-display-config.c meta-dbus-display-config.h
--- a/src/backends/meta-backend.c
+++ b/src/backends/meta-backend.c
@@ -92,12 +92,37 @@ meta_backend_sync_screen_size (MetaBackend *backend)
  META_BACKEND_GET_CLASS (backend)->update_screen_size (backend, width, height);
 }

+static void
+center_pointer (MetaBackend *backend)
+{
+  MetaBackendPrivate *priv = meta_backend_get_instance_private (backend);
+  MetaMonitorInfo *monitors, *primary;
+  guint n_monitors;
+
+  monitors = meta_monitor_manager_get_monitor_infos (priv->monitor_manager, &n_monitors);
+  primary = &monitors[meta_monitor_manager_get_primary_index (priv->monitor_manager)];
+  meta_backend_warp_pointer (backend,
+                             primary->rect.x + primary->rect.width / 2,
+                             primary->rect.y + primary->rect.height / 2);
+}
+
 static void
 on_monitors_changed (MetaMonitorManager *monitors,
                     gpointer user_data)
 {
  MetaBackend *backend = META_BACKEND (user_data);
+  ClutterDeviceManager *manager = clutter_device_manager_get_default ();
+  ClutterInputDevice *device = clutter_device_manager_get_core_device (manager, CLUTTER_POINTER_DEVICE);
+  ClutterPoint point;
+
  meta_backend_sync_screen_size (backend);
+
+  if (clutter_input_device_get_coords (device, NULL, &point))
+    {
+      /* If we're outside all monitors, warp the pointer back inside */
+      if (meta_monitor_manager_get_monitor_at_point (monitors, point.x, point.y) < 0)
+        center_pointer (backend);
+    }
 }

 static MetaIdleMonitor *
@@ -283,6 +308,8 @@ meta_backend_real_post_init (MetaBackend *backend)
  }

  priv->input_settings = meta_input_settings_create ();
+
+  center_pointer (backend);
 }

 static MetaCursorRenderer *
--- a/src/backends/meta-barrier.c
+++ b/src/backends/meta-barrier.c
@@ -16,7 +16,7 @@
 #include "backends/native/meta-barrier-native.h"
 #include "backends/x11/meta-backend-x11.h"
 #include "backends/x11/meta-barrier-x11.h"
-#include "mutter-enum-types.h"
+#include <meta/meta-enum-types.h>

 G_DEFINE_TYPE (MetaBarrier, meta_barrier, G_TYPE_OBJECT)
 G_DEFINE_TYPE (MetaBarrierImpl, meta_barrier_impl, G_TYPE_OBJECT)
--- a/src/backends/meta-cursor-private.h
+++ b/src/backends/meta-cursor-private.h
@@ -24,6 +24,7 @@

 #include "meta-cursor.h"

+#include <X11/Xcursor/Xcursor.h>
 #include <cogl/cogl.h>

 #ifdef HAVE_NATIVE_BACKEND
@@ -42,6 +43,8 @@ typedef struct {
 struct _MetaCursorReference {
  int ref_count;

+  int current_frame;
+  XcursorImages *xcursor_images;
  MetaCursor cursor;
  MetaCursorImage image;
 };
@@ -56,4 +59,8 @@ struct gbm_bo *meta_cursor_reference_get_gbm_bo (MetaCursorReference *cursor,
                                                 int                 *hot_y);
 #endif

+gboolean meta_cursor_reference_is_animated            (MetaCursorReference *self);
+void     meta_cursor_reference_tick_frame             (MetaCursorReference *self);
+guint    meta_cursor_reference_get_current_frame_time (MetaCursorReference *self);
+
 #endif /* META_CURSOR_PRIVATE_H */
--- a/src/backends/meta-cursor-renderer.c
+++ b/src/backends/meta-cursor-renderer.c
@@ -144,6 +144,13 @@ meta_cursor_renderer_set_cursor (MetaCursorRenderer  *renderer,
  update_cursor (renderer);
 }

+void
+meta_cursor_renderer_force_update (MetaCursorRenderer *renderer)
+{
+  update_cursor (renderer);
+  queue_redraw (renderer);
+}
+
 void
 meta_cursor_renderer_set_position (MetaCursorRenderer *renderer,
                                   int x, int y)
--- a/src/backends/meta-cursor-renderer.h
+++ b/src/backends/meta-cursor-renderer.h
@@ -61,6 +61,7 @@ void meta_cursor_renderer_set_cursor (MetaCursorRenderer  *renderer,

 void meta_cursor_renderer_set_position (MetaCursorRenderer *renderer,
                                        int x, int y);
+void meta_cursor_renderer_force_update (MetaCursorRenderer *renderer);

 MetaCursorReference * meta_cursor_renderer_get_cursor (MetaCursorRenderer *renderer);
 const MetaRectangle * meta_cursor_renderer_get_rect (MetaCursorRenderer *renderer);
--- a/src/backends/meta-cursor-tracker.c
+++ b/src/backends/meta-cursor-tracker.c
@@ -185,6 +185,7 @@ meta_cursor_tracker_handle_xevent (MetaCursorTracker *tracker,
    return FALSE;

  g_clear_pointer (&tracker->xfixes_cursor, meta_cursor_reference_unref);
+  g_signal_emit (tracker, signals[CURSOR_CHANGED], 0);

  return TRUE;
 }
--- a/src/backends/meta-cursor.c
+++ b/src/backends/meta-cursor.c
@@ -67,6 +67,8 @@ meta_cursor_image_free (MetaCursorImage *image)
 static void
 meta_cursor_reference_free (MetaCursorReference *self)
 {
+  if (self->xcursor_images)
+    XcursorImagesDestroy (self->xcursor_images);
  meta_cursor_image_free (&self->image);
  g_slice_free (MetaCursorReference, self);
 }
@@ -135,12 +137,12 @@ meta_cursor_create_x_cursor (Display    *xdisplay,
  return XcursorLibraryLoadCursor (xdisplay, translate_meta_cursor (cursor));
 }

-static XcursorImage *
+static XcursorImages *
 load_cursor_on_client (MetaCursor cursor)
 {
-  return XcursorLibraryLoadImage (translate_meta_cursor (cursor),
-                                  meta_prefs_get_cursor_theme (),
-                                  meta_prefs_get_cursor_size ());
+  return XcursorLibraryLoadImages (translate_meta_cursor (cursor),
+                                   meta_prefs_get_cursor_theme (),
+                                   meta_prefs_get_cursor_size ());
 }

 #ifdef HAVE_NATIVE_BACKEND
@@ -256,6 +258,46 @@ meta_cursor_image_load_from_xcursor_image (MetaCursorImage   *image,
 #endif
 }

+static XcursorImage *
+meta_cursor_reference_get_current_frame_image (MetaCursorReference *self)
+{
+  return self->xcursor_images->images[self->current_frame];
+}
+
+void
+meta_cursor_reference_tick_frame (MetaCursorReference *self)
+{
+  XcursorImage *image;
+
+  if (!meta_cursor_reference_is_animated (self))
+    return;
+
+  self->current_frame++;
+
+  if (self->current_frame >= self->xcursor_images->nimage)
+    self->current_frame = 0;
+
+  meta_cursor_image_free (&self->image);
+  image = meta_cursor_reference_get_current_frame_image (self);
+  meta_cursor_image_load_from_xcursor_image (&self->image, image);
+}
+
+guint
+meta_cursor_reference_get_current_frame_time (MetaCursorReference *self)
+{
+  if (!meta_cursor_reference_is_animated (self))
+    return 0;
+
+  return self->xcursor_images->images[self->current_frame]->delay;
+}
+
+gboolean
+meta_cursor_reference_is_animated (MetaCursorReference *self)
+{
+  return (self->xcursor_images &&
+          self->xcursor_images->nimage > 1);
+}
+
 static void
 load_cursor_image (MetaCursorReference *cursor)
 {
@@ -266,12 +308,16 @@ load_cursor_image (MetaCursorReference *cursor)
   * load this directly. */
  g_assert (cursor->cursor != META_CURSOR_NONE);

-  image = load_cursor_on_client (cursor->cursor);
-  if (!image)
-    return;
+  if (!cursor->xcursor_images)
+    {
+      cursor->current_frame = 0;
+      cursor->xcursor_images = load_cursor_on_client (cursor->cursor);
+      if (!cursor->xcursor_images)
+        return;
+    }

+  image = meta_cursor_reference_get_current_frame_image (cursor);
  meta_cursor_image_load_from_xcursor_image (&cursor->image, image);
-  XcursorImageDestroy (image);
 }

 MetaCursorReference *
--- a/src/backends/meta-input-settings.c
+++ b/src/backends/meta-input-settings.c
@@ -209,6 +209,10 @@ update_touchpad_left_handed (MetaInputSettings  *input_settings,
  MetaInputSettingsPrivate *priv;
  gboolean enabled = FALSE;

+  if (device &&
+      clutter_input_device_get_device_type (device) != CLUTTER_TOUCHPAD_DEVICE)
+    return;
+
  priv = meta_input_settings_get_instance_private (input_settings);
  input_settings_class = META_INPUT_SETTINGS_GET_CLASS (input_settings);
  handedness = g_settings_get_enum (priv->touchpad_settings, "left-handed");
@@ -230,7 +234,6 @@ update_touchpad_left_handed (MetaInputSettings  *input_settings,

  if (device)
    {
-      g_assert (clutter_input_device_get_device_type (device) == CLUTTER_TOUCHPAD_DEVICE);
      settings_device_set_bool_setting (input_settings, device,
                                        input_settings_class->set_left_handed,
                                        enabled);
@@ -251,13 +254,16 @@ update_mouse_left_handed (MetaInputSettings  *input_settings,
  MetaInputSettingsPrivate *priv;
  gboolean enabled;

+  if (device &&
+      clutter_input_device_get_device_type (device) != CLUTTER_POINTER_DEVICE)
+    return;
+
  priv = meta_input_settings_get_instance_private (input_settings);
  input_settings_class = META_INPUT_SETTINGS_GET_CLASS (input_settings);
  enabled = g_settings_get_boolean (priv->mouse_settings, "left-handed");

  if (device)
    {
-      g_assert (clutter_input_device_get_device_type (device) == CLUTTER_POINTER_DEVICE);
      settings_device_set_bool_setting (input_settings, device,
                                        input_settings_class->set_left_handed,
                                        enabled);
@@ -279,51 +285,82 @@ update_mouse_left_handed (MetaInputSettings  *input_settings,
    }
 }

+static GSettings *
+get_settings_for_device_type (MetaInputSettings      *input_settings,
+                              ClutterInputDeviceType  type)
+{
+  MetaInputSettingsPrivate *priv;
+  priv = meta_input_settings_get_instance_private (input_settings);
+  switch (type)
+    {
+    case CLUTTER_POINTER_DEVICE:
+      return priv->mouse_settings;
+    case CLUTTER_TOUCHPAD_DEVICE:
+      return priv->touchpad_settings;
+    default:
+      return NULL;
+    }
+}
+
 static void
 update_device_speed (MetaInputSettings      *input_settings,
-                     GSettings              *settings,
-                     ClutterInputDevice     *device,
-                     ClutterInputDeviceType  type)
+                     ClutterInputDevice     *device)
 {
-  MetaInputSettingsClass *input_settings_class;
-  gdouble speed;
+  GSettings *settings;
+  ConfigDoubleFunc func;
+  const gchar *key = "speed";

-  input_settings_class = META_INPUT_SETTINGS_GET_CLASS (input_settings);
-  speed = g_settings_get_double (settings, "speed");
+  func = META_INPUT_SETTINGS_GET_CLASS (input_settings)->set_speed;

  if (device)
-    settings_device_set_double_setting (input_settings, device,
-                                        input_settings_class->set_speed,
-                                        speed);
+    {
+      settings = get_settings_for_device_type (input_settings,
+                                               clutter_input_device_get_device_type (device));
+      if (!settings)
+        return;
+
+      settings_device_set_double_setting (input_settings, device, func,
+                                          g_settings_get_double (settings, key));
+    }
  else
-    settings_set_double_setting (input_settings, type,
-                                 input_settings_class->set_speed,
-                                 speed);
+    {
+      settings = get_settings_for_device_type (input_settings, CLUTTER_POINTER_DEVICE);
+      settings_set_double_setting (input_settings, CLUTTER_POINTER_DEVICE, func,
+                                   g_settings_get_double (settings, key));
+      settings = get_settings_for_device_type (input_settings, CLUTTER_TOUCHPAD_DEVICE);
+      settings_set_double_setting (input_settings, CLUTTER_TOUCHPAD_DEVICE, func,
+                                   g_settings_get_double (settings, key));
+    }
 }

 static void
 update_device_natural_scroll (MetaInputSettings      *input_settings,
-                              GSettings              *settings,
-                              ClutterInputDevice     *device,
-                              ClutterInputDeviceType  type)
+                              ClutterInputDevice     *device)
 {
-  MetaInputSettingsClass *input_settings_class;
-  gboolean enabled;
+  GSettings *settings;
+  ConfigBoolFunc func;
+  const gchar *key = "natural-scroll";

-  input_settings_class = META_INPUT_SETTINGS_GET_CLASS (input_settings);
-  enabled = g_settings_get_boolean (settings, "natural-scroll");
+  func = META_INPUT_SETTINGS_GET_CLASS (input_settings)->set_invert_scroll;

  if (device)
    {
-      settings_device_set_bool_setting (input_settings, device,
-                                        input_settings_class->set_invert_scroll,
-                                        enabled);
+      settings = get_settings_for_device_type (input_settings,
+                                               clutter_input_device_get_device_type (device));
+      if (!settings)
+        return;
+
+      settings_device_set_bool_setting (input_settings, device, func,
+                                        g_settings_get_boolean (settings, key));
    }
  else
    {
-      settings_set_bool_setting (input_settings, type,
-                                 input_settings_class->set_invert_scroll,
-                                 enabled);
+      settings = get_settings_for_device_type (input_settings, CLUTTER_POINTER_DEVICE);
+      settings_set_bool_setting (input_settings, CLUTTER_POINTER_DEVICE, func,
+                                 g_settings_get_boolean (settings, key));
+      settings = get_settings_for_device_type (input_settings, CLUTTER_TOUCHPAD_DEVICE);
+      settings_set_bool_setting (input_settings, CLUTTER_TOUCHPAD_DEVICE, func,
+                                 g_settings_get_boolean (settings, key));
    }
 }

@@ -335,6 +372,10 @@ update_touchpad_tap_enabled (MetaInputSettings  *input_settings,
  MetaInputSettingsPrivate *priv;
  gboolean enabled;

+  if (device &&
+      clutter_input_device_get_device_type (device) != CLUTTER_TOUCHPAD_DEVICE)
+    return;
+
  priv = meta_input_settings_get_instance_private (input_settings);
  input_settings_class = META_INPUT_SETTINGS_GET_CLASS (input_settings);
  enabled = g_settings_get_boolean (priv->touchpad_settings, "tap-to-click");
@@ -361,6 +402,10 @@ update_touchpad_scroll_method (MetaInputSettings *input_settings,
  GDesktopTouchpadScrollMethod method;
  MetaInputSettingsPrivate *priv;

+  if (device &&
+      clutter_input_device_get_device_type (device) != CLUTTER_TOUCHPAD_DEVICE)
+    return;
+
  priv = meta_input_settings_get_instance_private (input_settings);
  input_settings_class = META_INPUT_SETTINGS_GET_CLASS (input_settings);
  method = g_settings_get_enum (priv->touchpad_settings, "scroll-method");
@@ -387,6 +432,10 @@ update_touchpad_click_method (MetaInputSettings *input_settings,
  GDesktopTouchpadScrollMethod method;
  MetaInputSettingsPrivate *priv;

+  if (device &&
+      clutter_input_device_get_device_type (device) != CLUTTER_TOUCHPAD_DEVICE)
+    return;
+
  priv = meta_input_settings_get_instance_private (input_settings);
  input_settings_class = META_INPUT_SETTINGS_GET_CLASS (input_settings);
  method = g_settings_get_enum (priv->touchpad_settings, "click-method");
@@ -413,6 +462,10 @@ update_touchpad_send_events (MetaInputSettings  *input_settings,
  MetaInputSettingsPrivate *priv;
  GDesktopDeviceSendEvents mode;

+  if (device &&
+      clutter_input_device_get_device_type (device) != CLUTTER_TOUCHPAD_DEVICE)
+    return;
+
  priv = meta_input_settings_get_instance_private (input_settings);
  input_settings_class = META_INPUT_SETTINGS_GET_CLASS (input_settings);
  mode = g_settings_get_enum (priv->touchpad_settings, "send-events");
@@ -455,11 +508,16 @@ update_trackball_scroll_button (MetaInputSettings  *input_settings,
  MetaInputSettingsPrivate *priv;
  guint button;

+  if (device && !device_is_trackball (device))
+    return;
+
  priv = meta_input_settings_get_instance_private (input_settings);
  input_settings_class = META_INPUT_SETTINGS_GET_CLASS (input_settings);
-  button = g_settings_get_uint (priv->trackball_settings, "scroll-wheel-emulation-button");
+  /* This key is 'i' in the schema but it also specifies a minimum
+   * range of 0 so the cast here is safe. */
+  button = (guint) g_settings_get_int (priv->trackball_settings, "scroll-wheel-emulation-button");

-  if (device && device_is_trackball (device))
+  if (device)
    {
      input_settings_class->set_scroll_button (input_settings, device, button);
    }
@@ -573,22 +631,18 @@ meta_input_settings_changed_cb (GSettings  *settings,
      if (strcmp (key, "left-handed") == 0)
        update_mouse_left_handed (input_settings, NULL);
      else if (strcmp (key, "speed") == 0)
-        update_device_speed (input_settings, settings, NULL,
-                             CLUTTER_POINTER_DEVICE);
+        update_device_speed (input_settings, NULL);
      else if (strcmp (key, "natural-scroll") == 0)
-        update_device_natural_scroll (input_settings, settings,
-                                      NULL, CLUTTER_POINTER_DEVICE);
+        update_device_natural_scroll (input_settings, NULL);
    }
  else if (settings == priv->touchpad_settings)
    {
      if (strcmp (key, "left-handed") == 0)
        update_touchpad_left_handed (input_settings, NULL);
      else if (strcmp (key, "speed") == 0)
-        update_device_speed (input_settings, settings, NULL,
-                             CLUTTER_TOUCHPAD_DEVICE);
+        update_device_speed (input_settings, NULL);
      else if (strcmp (key, "natural-scroll") == 0)
-        update_device_natural_scroll (input_settings, settings,
-                                      NULL, CLUTTER_TOUCHPAD_DEVICE);
+        update_device_natural_scroll (input_settings, NULL);
      else if (strcmp (key, "tap-to-click") == 0)
        update_touchpad_tap_enabled (input_settings, NULL);
      else if (strcmp (key, "send-events") == 0)
@@ -706,45 +760,35 @@ check_add_mappable_device (MetaInputSettings  *input_settings,
  return TRUE;
 }

+static void
+apply_device_settings (MetaInputSettings  *input_settings,
+                       ClutterInputDevice *device)
+{
+  update_mouse_left_handed (input_settings, device);
+  update_device_speed (input_settings, device);
+  update_device_natural_scroll (input_settings, device);
+
+  update_touchpad_left_handed (input_settings, device);
+  update_device_speed (input_settings, device);
+  update_device_natural_scroll (input_settings, device);
+  update_touchpad_tap_enabled (input_settings, device);
+  update_touchpad_send_events (input_settings, device);
+  update_touchpad_scroll_method (input_settings, device);
+  update_touchpad_click_method (input_settings, device);
+
+  update_trackball_scroll_button (input_settings, device);
+}
+
 static void
 meta_input_settings_device_added (ClutterDeviceManager *device_manager,
                                  ClutterInputDevice   *device,
                                  MetaInputSettings    *input_settings)
 {
-  ClutterInputDeviceType type;
-  MetaInputSettingsPrivate *priv;
-
  if (clutter_input_device_get_device_mode (device) == CLUTTER_INPUT_MODE_MASTER)
    return;

-  priv = meta_input_settings_get_instance_private (input_settings);
-  type = clutter_input_device_get_device_type (device);
-
-  if (type == CLUTTER_POINTER_DEVICE)
-    {
-      update_mouse_left_handed (input_settings, device);
-      update_device_speed (input_settings, priv->mouse_settings, device, type);
-
-      if (device_is_trackball (device))
-        update_trackball_scroll_button (input_settings, device);
-    }
-  else if (type == CLUTTER_TOUCHPAD_DEVICE)
-    {
-      update_touchpad_left_handed (input_settings, device);
-      update_touchpad_tap_enabled (input_settings, device);
-      update_touchpad_scroll_method (input_settings, device);
-      update_touchpad_click_method (input_settings, device);
-      update_touchpad_send_events (input_settings, device);
-
-      update_device_speed (input_settings, priv->touchpad_settings,
-                           device, type);
-      update_device_natural_scroll (input_settings, priv->touchpad_settings,
-                                    device, type);
-    }
-  else
-    {
-      check_add_mappable_device (input_settings, device);
-    }
+  apply_device_settings (input_settings, device);
+  check_add_mappable_device (input_settings, device);
 }

 static void
@@ -782,25 +826,9 @@ static void
 meta_input_settings_constructed (GObject *object)
 {
  MetaInputSettings *input_settings = META_INPUT_SETTINGS (object);
-  MetaInputSettingsPrivate *priv;
-
-  priv = meta_input_settings_get_instance_private (input_settings);
-
-  update_mouse_left_handed (input_settings, NULL);
-
-  update_touchpad_left_handed (input_settings, NULL);
-  update_touchpad_tap_enabled (input_settings, NULL);
-  update_touchpad_send_events (input_settings, NULL);
-
-  update_device_natural_scroll (input_settings, priv->touchpad_settings,
-                                NULL, CLUTTER_TOUCHPAD_DEVICE);
-  update_device_speed (input_settings, priv->touchpad_settings, NULL,
-                       CLUTTER_TOUCHPAD_DEVICE);
-  update_device_speed (input_settings, priv->mouse_settings, NULL,
-                       CLUTTER_POINTER_DEVICE);

+  apply_device_settings (input_settings, NULL);
  update_keyboard_repeat (input_settings);
-
  check_mappable_devices (input_settings);
 }

--- a/src/backends/meta-monitor-config.c
+++ b/src/backends/meta-monitor-config.c
@@ -65,6 +65,7 @@ typedef struct {

  gboolean is_primary;
  gboolean is_presentation;
+  gboolean is_underscanning;
 } MetaOutputConfig;

 typedef struct {
@@ -82,7 +83,8 @@ struct _MetaMonitorConfig {
  gboolean current_is_for_laptop_lid;
  MetaConfiguration *previous;

-  GFile *file;
+  GFile *user_file;
+  GFile *system_file;
  GCancellable *save_cancellable;

  UpClient *up_client;
@@ -238,6 +240,7 @@ meta_monitor_config_init (MetaMonitorConfig *self)
 {
  const char *filename;
  char *path;
+  const char * const *system_dirs;

  self->configs = g_hash_table_new_full (config_hash, config_equal, NULL, (GDestroyNotify) config_unref);

@@ -246,9 +249,17 @@ meta_monitor_config_init (MetaMonitorConfig *self)
    filename = "monitors.xml";

  path = g_build_filename (g_get_user_config_dir (), filename, NULL);
-  self->file = g_file_new_for_path (path);
+  self->user_file = g_file_new_for_path (path);
  g_free (path);

+  for (system_dirs = g_get_system_config_dirs (); !self->system_file && *system_dirs; system_dirs++)
+    {
+      path = g_build_filename (*system_dirs, filename, NULL);
+      if (g_file_test (path, G_FILE_TEST_EXISTS))
+        self->system_file = g_file_new_for_path (path);
+      g_free (path);
+    }
+
  self->up_client = up_client_new ();
  self->lid_is_closed = up_client_get_lid_is_closed (self->up_client);

@@ -393,7 +404,8 @@ handle_start_element (GMarkupParseContext  *context,
             strcmp (element_name, "reflect_x") == 0 ||
             strcmp (element_name, "reflect_y") == 0 ||
             strcmp (element_name, "primary") == 0 ||
-             strcmp (element_name, "presentation") == 0) && parser->unknown_count == 0)
+             strcmp (element_name, "presentation") == 0 ||
+             strcmp (element_name, "underscanning") == 0) && parser->unknown_count == 0)
          {
            parser->state = STATE_OUTPUT_FIELD;

@@ -477,8 +489,8 @@ handle_end_element (GMarkupParseContext  *context,
              }
            else
              {
-                if (parser->output.rect.width == 0 &&
-                    parser->output.rect.width == 0)
+                if (parser->output.rect.width == 0 ||
+                    parser->output.rect.height == 0)
                  parser->output.enabled = FALSE;
                else
                  parser->output.enabled = TRUE;
@@ -700,6 +712,8 @@ handle_text (GMarkupParseContext *context,
          parser->output.is_primary = read_bool (text, text_len, error);
        else if (strcmp (parser->output_field, "presentation") == 0)
          parser->output.is_presentation = read_bool (text, text_len, error);
+        else if (strcmp (parser->output_field, "underscanning") == 0)
+          parser->output.is_underscanning = read_bool (text, text_len, error);
        else
          g_assert_not_reached ();
        return;
@@ -717,8 +731,8 @@ static const GMarkupParser config_parser = {
  .text = handle_text,
 };

-static void
-meta_monitor_config_load (MetaMonitorConfig  *self)
+static gboolean
+load_config_file (MetaMonitorConfig *self, GFile *file)
 {
  char *contents;
  gsize size;
@@ -736,14 +750,12 @@ meta_monitor_config_load (MetaMonitorConfig  *self)
  */

  error = NULL;
-  ok = g_file_load_contents (self->file, NULL, &contents, &size, NULL, &error);
+  ok = g_file_load_contents (file, NULL, &contents, &size, NULL, &error);
  if (!ok)
    {
-      if (!g_error_matches (error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND))
-        meta_warning ("Failed to load stored monitor configuration: %s\n", error->message);

      g_error_free (error);
-      return;
+      return FALSE;
    }

  memset (&parser, 0, sizeof (ConfigParser));
@@ -772,6 +784,17 @@ meta_monitor_config_load (MetaMonitorConfig  *self)

  g_markup_parse_context_free (context);
  g_free (contents);
+
+  return ok;
+}
+
+static void
+meta_monitor_config_load (MetaMonitorConfig *self)
+{
+  if (self->user_file && load_config_file (self, self->user_file))
+    return;
+  if (self->system_file && load_config_file (self, self->system_file))
+    return;
 }

 MetaMonitorConfig *
@@ -863,14 +886,14 @@ apply_configuration (MetaMonitorConfig  *self,
                     MetaConfiguration  *config,
 		     MetaMonitorManager *manager)
 {
-  GPtrArray *crtcs, *outputs;
-  gboolean ret = FALSE;
+  g_autoptr(GPtrArray) crtcs = NULL;
+  g_autoptr(GPtrArray) outputs = NULL;

  crtcs = g_ptr_array_new_full (config->n_outputs, (GDestroyNotify)meta_crtc_info_free);
  outputs = g_ptr_array_new_full (config->n_outputs, (GDestroyNotify)meta_output_info_free);

  if (!meta_monitor_config_assign_crtcs (config, manager, crtcs, outputs))
-    goto out;
+    return FALSE;

  meta_monitor_manager_apply_configuration (manager,
                                            (MetaCRTCInfo**)crtcs->pdata, crtcs->len,
@@ -882,12 +905,7 @@ apply_configuration (MetaMonitorConfig  *self,
   * inside turn_off_laptop_display / apply_configuration_with_lid */
  self->current_is_for_laptop_lid = FALSE;

-  ret = TRUE;
-
- out:
-  g_ptr_array_unref (crtcs);
-  g_ptr_array_unref (outputs);
-  return ret;
+  return TRUE;
 }

 static gboolean
@@ -1056,12 +1074,12 @@ meta_monitor_config_apply_stored (MetaMonitorConfig  *self,
 * which are internal monitors), or failing that, the one with the
 * best resolution
 */
-static MetaOutput *
+static int
 find_primary_output (MetaOutput *outputs,
                     unsigned    n_outputs)
 {
  unsigned i;
-  MetaOutput *best;
+  int best;
  int best_width, best_height;

  g_assert (n_outputs >= 1);
@@ -1069,23 +1087,23 @@ find_primary_output (MetaOutput *outputs,
  for (i = 0; i < n_outputs; i++)
    {
      if (outputs[i].is_primary)
-        return &outputs[i];
+        return i;
    }

  for (i = 0; i < n_outputs; i++)
    {
      if (output_is_laptop (&outputs[i]))
-        return &outputs[i];
+        return i;
    }

-  best = NULL;
+  best = -1;
  best_width = 0; best_height = 0;
  for (i = 0; i < n_outputs; i++)
    {
      if (outputs[i].preferred_mode->width * outputs[i].preferred_mode->height >
          best_width * best_height)
        {
-          best = &outputs[i];
+          best = i;
          best_width = outputs[i].preferred_mode->width;
          best_height = outputs[i].preferred_mode->height;
        }
@@ -1123,7 +1141,7 @@ make_suggested_config (MetaMonitorConfig *self,
                       MetaConfiguration *config)
 {
  unsigned int i;
-  MetaOutput *primary;
+  int primary;
  GList *region = NULL;

  g_return_val_if_fail (config != NULL, FALSE);
@@ -1131,7 +1149,7 @@ make_suggested_config (MetaMonitorConfig *self,

  for (i = 0; i < n_outputs; i++)
    {
-      gboolean is_primary = (&outputs[i] == primary);
+      gboolean is_primary = ((int)i == primary);

      if (outputs[i].suggested_x < 0 || outputs[i].suggested_y < 0)
          return FALSE;
@@ -1158,6 +1176,81 @@ make_suggested_config (MetaMonitorConfig *self,
  return TRUE;
 }

+static void
+config_one_untiled_output (MetaOutput *outputs,
+                           MetaConfiguration *config,
+                           int idx, gboolean is_primary,
+                           int *x, unsigned long *output_configured_bitmap)
+{
+  MetaOutput *output = &outputs[idx];
+
+  if (*output_configured_bitmap & (1 << idx))
+    return;
+
+  init_config_from_preferred_mode (&config->outputs[idx], output);
+  config->outputs[idx].is_primary = is_primary;
+  config->outputs[idx].rect.x = *x;
+  *x += config->outputs[idx].rect.width;
+  *output_configured_bitmap |= (1 << idx);
+}
+
+static void
+config_one_tiled_group (MetaOutput *outputs,
+                        MetaConfiguration *config,
+                        int base_idx, gboolean is_primary,
+                        int n_outputs,
+                        int *x, unsigned long *output_configured_bitmap)
+{
+  guint32 num_h_tile, num_v_tile, ht, vt;
+  int j;
+  int cur_x, cur_y, addx = 0;
+
+  if (*output_configured_bitmap & (1 << base_idx))
+      return;
+
+  if (outputs[base_idx].tile_info.group_id == 0)
+    return;
+
+  cur_x = cur_y = 0;
+  num_h_tile = outputs[base_idx].tile_info.max_h_tiles;
+  num_v_tile = outputs[base_idx].tile_info.max_v_tiles;
+
+  /* iterate over horizontal tiles */
+  cur_x = *x;
+  for (ht = 0; ht < num_h_tile; ht++)
+    {
+      cur_y = 0;
+      addx = 0;
+      for (vt = 0; vt < num_v_tile; vt++)
+        {
+          for (j = 0; j < n_outputs; j++)
+            {
+              if (outputs[j].tile_info.group_id != outputs[base_idx].tile_info.group_id)
+                continue;
+
+              if (outputs[j].tile_info.loc_h_tile != ht ||
+                  outputs[j].tile_info.loc_v_tile != vt)
+                continue;
+
+              if (ht == 0 && vt == 0 && is_primary)
+                config->outputs[j].is_primary = TRUE;
+
+              init_config_from_preferred_mode (&config->outputs[j], &outputs[j]);
+              config->outputs[j].rect.x = cur_x;
+              config->outputs[j].rect.y = cur_y;
+
+              *output_configured_bitmap |= (1 << j);
+              cur_y += outputs[j].tile_info.tile_h;
+              if (vt == 0)
+                addx += outputs[j].tile_info.tile_w;
+            }
+        }
+      cur_x += addx;
+    }
+  *x = cur_x;
+
+}
+
 static void
 make_linear_config (MetaMonitorConfig *self,
                    MetaOutput        *outputs,
@@ -1166,31 +1259,41 @@ make_linear_config (MetaMonitorConfig *self,
                    int                max_height,
                    MetaConfiguration *config)
 {
-  MetaOutput *primary;
+  unsigned long output_configured_bitmap = 0;
  unsigned i;
  int x;
+  int primary;

  g_return_if_fail (config != NULL);

  primary = find_primary_output (outputs, n_outputs);

-  x = primary->preferred_mode->width;
+  x = 0;
+  /* set the primary up first at 0 */
+  if (outputs[primary].tile_info.group_id)
+    {
+      config_one_tiled_group (outputs, config, primary, TRUE, n_outputs,
+                              &x, &output_configured_bitmap);
+    }
+  else
+    {
+      config_one_untiled_output (outputs, config, primary, TRUE,
+                                 &x, &output_configured_bitmap);
+    }
+
+  /* then add other tiled monitors */
  for (i = 0; i < n_outputs; i++)
    {
-      gboolean is_primary = (&outputs[i] == primary);
+      config_one_tiled_group (outputs, config, i, FALSE, n_outputs,
+                              &x, &output_configured_bitmap);
+    }

-      init_config_from_preferred_mode (&config->outputs[i], &outputs[i]);
-      config->outputs[i].is_primary = is_primary;
+  /* then add remaining monitors */
+  for (i = 0; i < n_outputs; i++)
+    {
+      config_one_untiled_output (outputs, config, i, FALSE,
+                                 &x, &output_configured_bitmap);

-      if (is_primary)
-        {
-          config->outputs[i].rect.x = 0;
-        }
-      else
-        {
-          config->outputs[i].rect.x = x;
-          x += config->outputs[i].rect.width;
-        }
    }
 }

@@ -1314,7 +1417,7 @@ ensure_at_least_one_output (MetaMonitorConfig  *self,
                            unsigned            n_outputs)
 {
  MetaConfiguration *config;
-  MetaOutput *primary;
+  int primary;
  unsigned i;

  /* Check that we have at least one active output */
@@ -1332,7 +1435,7 @@ ensure_at_least_one_output (MetaMonitorConfig  *self,

  for (i = 0; i < n_outputs; i++)
    {
-      gboolean is_primary = (&outputs[i] == primary);
+      gboolean is_primary = ((int)i == primary);

      if (is_primary)
        {
@@ -1408,6 +1511,7 @@ init_config_from_output (MetaOutputConfig *config,
  config->transform = output->crtc->transform;
  config->is_primary = output->is_primary;
  config->is_presentation = output->is_presentation;
+  config->is_underscanning = output->is_underscanning;
 }

 void
@@ -1598,7 +1702,8 @@ meta_monitor_config_save (MetaMonitorConfig *self)
                                      "      <reflect_x>%s</reflect_x>\n"
                                      "      <reflect_y>no</reflect_y>\n"
                                      "      <primary>%s</primary>\n"
-                                      "      <presentation>%s</presentation>\n",
+                                      "      <presentation>%s</presentation>\n"
+                                      "      <underscanning>%s</underscanning>\n",
                                      output->rect.width,
                                      output->rect.height,
                                      refresh_rate,
@@ -1607,7 +1712,8 @@ meta_monitor_config_save (MetaMonitorConfig *self)
                                      rotation_map[output->transform & 0x3],
                                      output->transform >= META_MONITOR_TRANSFORM_FLIPPED ? "yes" : "no",
                                      output->is_primary ? "yes" : "no",
-                                      output->is_presentation ? "yes" : "no");
+                                      output->is_presentation ? "yes" : "no",
+                                      output->is_underscanning ? "yes" : "no");
            }

          g_string_append (buffer, "    </output>\n");
@@ -1622,7 +1728,7 @@ meta_monitor_config_save (MetaMonitorConfig *self)
  closure->config = g_object_ref (self);
  closure->buffer = buffer;

-  g_file_replace_contents_async (self->file,
+  g_file_replace_contents_async (self->user_file,
                                 buffer->str, buffer->len,
                                 NULL, /* etag */
                                 TRUE,
@@ -1814,7 +1920,6 @@ real_assign_crtcs (CrtcAssignment     *assignment,
  MetaOutputKey *output_key;
  MetaOutputConfig *output_config;
  unsigned int i;
-  gboolean success;

  if (output_num == assignment->config->n_outputs)
    return TRUE;
@@ -1831,8 +1936,6 @@ real_assign_crtcs (CrtcAssignment     *assignment,
                                      &crtcs, &n_crtcs,
                                      &outputs, &n_outputs);

-  success = FALSE;
-
  for (i = 0; i < n_crtcs; i++)
    {
      MetaCRTC *crtc = &crtcs[i];
@@ -1879,10 +1982,7 @@ real_assign_crtcs (CrtcAssignment     *assignment,
                                              output))
                    {
                      if (real_assign_crtcs (assignment, output_num + 1))
-                        {
-                          success = TRUE;
-                          goto out;
-                        }
+                        return TRUE;

                      crtc_assignment_unassign (assignment, crtc, output);
                    }
@@ -1891,8 +1991,7 @@ real_assign_crtcs (CrtcAssignment     *assignment,
 	}
    }

-out:
-  return success;
+  return FALSE;
 }

 static gboolean
@@ -1941,6 +2040,7 @@ meta_monitor_config_assign_crtcs (MetaConfiguration  *config,
                                                &config->keys[i]);
      output_info->is_primary = output_config->is_primary;
      output_info->is_presentation = output_config->is_presentation;
+      output_info->is_underscanning = output_config->is_underscanning;

      g_ptr_array_add (outputs, output_info);
    }
--- a/src/backends/meta-monitor-manager-dummy.c
+++ b/src/backends/meta-monitor-manager-dummy.c
@@ -27,6 +27,10 @@

 #include "meta-monitor-manager-dummy.h"

+#include <stdlib.h>
+
+#include <meta/util.h>
+
 #define ALL_TRANSFORMS ((1 << (META_MONITOR_TRANSFORM_FLIPPED_270 + 1)) - 1)

 struct _MetaMonitorManagerDummy
@@ -44,9 +48,69 @@ G_DEFINE_TYPE (MetaMonitorManagerDummy, meta_monitor_manager_dummy, META_TYPE_MO
 static void
 meta_monitor_manager_dummy_read_current (MetaMonitorManager *manager)
 {
+  unsigned int num_monitors = 1;
+  int *monitor_scales = NULL;
+  const char *num_monitors_str;
+  const char *monitor_scales_str;
+  unsigned int i;
+  int current_x = 0;
+
+  /* To control what monitor configuration is generated, there are two available
+   * environmental variables that can be used:
+   *
+   * MUTTER_DEBUG_NUM_DUMMY_MONITORS
+   *
+   * Specifies the number of dummy monitors to include in the stage. Every
+   * monitor is 1024x786 pixels and they are placed on a horizontal row.
+   *
+   * MUTTER_DEBUG_DUMMY_MONITOR_SCALES
+   *
+   * A comma separated list that specifies the scales of the dummy monitors.
+   *
+   * For example the following configuration results in two monitors, where the
+   * first one has the monitor scale 1, and the other the monitor scale 2.
+   *
+   * MUTTER_DEBUG_NUM_DUMMY_MONITORS=2
+   * MUTTER_DEBUG_DUMMY_MONITOR_SCALES=1,2
+   */
+  num_monitors_str = getenv ("MUTTER_DEBUG_NUM_DUMMY_MONITORS");
+  if (num_monitors_str)
+    {
+      num_monitors = g_ascii_strtoll (num_monitors_str, NULL, 10);
+      if (num_monitors <= 0)
+        {
+          meta_warning ("Invalid number of dummy monitors");
+          num_monitors = 1;
+        }
+    }
+
+  monitor_scales = g_newa (int, num_monitors);
+  for (i = 0; i < num_monitors; i++)
+    monitor_scales[i] = 1;
+
+  monitor_scales_str = getenv ("MUTTER_DEBUG_DUMMY_MONITOR_SCALES");
+  if (monitor_scales_str)
+    {
+      gchar **scales_str_list;
+
+      scales_str_list = g_strsplit (monitor_scales_str, ",", -1);
+      if (g_strv_length (scales_str_list) != num_monitors)
+        meta_warning ("Number of specified monitor scales differ from number "
+                      "of monitors (defaults to 1).\n");
+      for (i = 0; i < num_monitors && scales_str_list[i]; i++)
+        {
+          int scale = g_ascii_strtoll (scales_str_list[i], NULL, 10);
+          if (scale == 1 || scale == 2)
+            monitor_scales[i] = scale;
+          else
+            meta_warning ("Invalid dummy monitor scale");
+        }
+      g_strfreev (scales_str_list);
+    }
+
  manager->max_screen_width = 65535;
  manager->max_screen_height = 65535;
-  manager->screen_width = 1024;
+  manager->screen_width = 1024 * num_monitors;
  manager->screen_height = 768;

  manager->modes = g_new0 (MetaMonitorMode, 1);
@@ -57,46 +121,52 @@ meta_monitor_manager_dummy_read_current (MetaMonitorManager *manager)
  manager->modes[0].height = 768;
  manager->modes[0].refresh_rate = 60.0;

-  manager->crtcs = g_new0 (MetaCRTC, 1);
-  manager->n_crtcs = 1;
+  manager->crtcs = g_new0 (MetaCRTC, num_monitors);
+  manager->n_crtcs = num_monitors;
+  manager->outputs = g_new0 (MetaOutput, num_monitors);
+  manager->n_outputs = num_monitors;

-  manager->crtcs[0].crtc_id = 1;
-  manager->crtcs[0].rect.x = 0;
-  manager->crtcs[0].rect.y = 0;
-  manager->crtcs[0].rect.width = manager->modes[0].width;
-  manager->crtcs[0].rect.height = manager->modes[0].height;
-  manager->crtcs[0].current_mode = &manager->modes[0];
-  manager->crtcs[0].transform = META_MONITOR_TRANSFORM_NORMAL;
-  manager->crtcs[0].all_transforms = ALL_TRANSFORMS;
-  manager->crtcs[0].is_dirty = FALSE;
-  manager->crtcs[0].logical_monitor = NULL;
+  for (i = 0; i < num_monitors; i++)
+    {
+      manager->crtcs[i].crtc_id = i + 1;
+      manager->crtcs[i].rect.x = current_x;
+      manager->crtcs[i].rect.y = 0;
+      manager->crtcs[i].rect.width = manager->modes[0].width;
+      manager->crtcs[i].rect.height = manager->modes[0].height;
+      manager->crtcs[i].current_mode = &manager->modes[0];
+      manager->crtcs[i].transform = META_MONITOR_TRANSFORM_NORMAL;
+      manager->crtcs[i].all_transforms = ALL_TRANSFORMS;
+      manager->crtcs[i].is_dirty = FALSE;
+      manager->crtcs[i].logical_monitor = NULL;

-  manager->outputs = g_new0 (MetaOutput, 1);
-  manager->n_outputs = 1;
+      current_x += manager->crtcs[i].rect.width;

-  manager->outputs[0].crtc = &manager->crtcs[0];
-  manager->outputs[0].winsys_id = 1;
-  manager->outputs[0].name = g_strdup ("LVDS");
-  manager->outputs[0].vendor = g_strdup ("MetaProducts Inc.");
-  manager->outputs[0].product = g_strdup ("unknown");
-  manager->outputs[0].serial = g_strdup ("0xC0FFEE");
-  manager->outputs[0].width_mm = 222;
-  manager->outputs[0].height_mm = 125;
-  manager->outputs[0].subpixel_order = COGL_SUBPIXEL_ORDER_UNKNOWN;
-  manager->outputs[0].preferred_mode = &manager->modes[0];
-  manager->outputs[0].n_modes = 1;
-  manager->outputs[0].modes = g_new0 (MetaMonitorMode *, 1);
-  manager->outputs[0].modes[0] = &manager->modes[0];
-  manager->outputs[0].n_possible_crtcs = 1;
-  manager->outputs[0].possible_crtcs = g_new0 (MetaCRTC *, 1);
-  manager->outputs[0].possible_crtcs[0] = &manager->crtcs[0];
-  manager->outputs[0].n_possible_clones = 0;
-  manager->outputs[0].possible_clones = g_new0 (MetaOutput *, 0);
-  manager->outputs[0].backlight = -1;
-  manager->outputs[0].backlight_min = 0;
-  manager->outputs[0].backlight_max = 0;
-  manager->outputs[0].connector_type = META_CONNECTOR_TYPE_LVDS;
-  manager->outputs[0].scale = 1;
+      manager->outputs[i].crtc = &manager->crtcs[i];
+      manager->outputs[i].winsys_id = i + 1;
+      manager->outputs[i].name = g_strdup_printf ("LVDS%d", i + 1);
+      manager->outputs[i].vendor = g_strdup ("MetaProducts Inc.");
+      manager->outputs[i].product = g_strdup ("unknown");
+      manager->outputs[i].serial = g_strdup ("0xC0FFEE");
+      manager->outputs[i].suggested_x = -1;
+      manager->outputs[i].suggested_y = -1;
+      manager->outputs[i].width_mm = 222;
+      manager->outputs[i].height_mm = 125;
+      manager->outputs[i].subpixel_order = COGL_SUBPIXEL_ORDER_UNKNOWN;
+      manager->outputs[i].preferred_mode = &manager->modes[0];
+      manager->outputs[i].n_modes = 1;
+      manager->outputs[i].modes = g_new0 (MetaMonitorMode *, 1);
+      manager->outputs[i].modes[0] = &manager->modes[0];
+      manager->outputs[i].n_possible_crtcs = 1;
+      manager->outputs[i].possible_crtcs = g_new0 (MetaCRTC *, 1);
+      manager->outputs[i].possible_crtcs[0] = &manager->crtcs[i];
+      manager->outputs[i].n_possible_clones = 0;
+      manager->outputs[i].possible_clones = g_new0 (MetaOutput *, 0);
+      manager->outputs[i].backlight = -1;
+      manager->outputs[i].backlight_min = 0;
+      manager->outputs[i].backlight_max = 0;
+      manager->outputs[i].connector_type = META_CONNECTOR_TYPE_LVDS;
+      manager->outputs[i].scale = monitor_scales[i];
+    }
 }

 static void
--- a/src/backends/meta-monitor-manager-private.h
+++ b/src/backends/meta-monitor-manager-private.h
@@ -56,6 +56,7 @@ typedef struct _MetaMonitorMode MetaMonitorMode;
 typedef struct _MetaMonitorInfo MetaMonitorInfo;
 typedef struct _MetaCRTCInfo MetaCRTCInfo;
 typedef struct _MetaOutputInfo MetaOutputInfo;
+typedef struct _MetaTileInfo MetaTileInfo;

 typedef enum {
  META_MONITOR_TRANSFORM_NORMAL,
@@ -89,6 +90,17 @@ typedef enum {
  META_CONNECTOR_TYPE_DSI = 16,
 } MetaConnectorType;

+struct _MetaTileInfo {
+  guint32 group_id;
+  guint32 flags;
+  guint32 max_h_tiles;
+  guint32 max_v_tiles;
+  guint32 loc_h_tile;
+  guint32 loc_v_tile;
+  guint32 tile_w;
+  guint32 tile_h;
+};
+
 struct _MetaOutput
 {
  /* The CRTC driving this output, NULL if the output is not enabled */
@@ -132,6 +144,8 @@ struct _MetaOutput
  */
  gboolean is_primary;
  gboolean is_presentation;
+  gboolean is_underscanning;
+  gboolean supports_underscanning;

  gpointer driver_private;
  GDestroyNotify driver_notify;
@@ -140,6 +154,8 @@ struct _MetaOutput
  gboolean hotplug_mode_update;
  gint suggested_x;
  gint suggested_y;
+
+  MetaTileInfo tile_info;
 };

 struct _MetaCRTC
@@ -159,6 +175,9 @@ struct _MetaCRTC
  gboolean is_dirty;

  MetaCursorReference *cursor;
+
+  gpointer driver_private;
+  GDestroyNotify driver_notify;
 };

 struct _MetaMonitorMode
@@ -175,6 +194,7 @@ struct _MetaMonitorMode
  GDestroyNotify driver_notify;
 };

+#define META_MAX_OUTPUTS_PER_MONITOR 4
 /**
 * MetaMonitorInfo:
 *
@@ -190,9 +210,14 @@ struct _MetaMonitorInfo
  int number;
  int xinerama_index;
  MetaRectangle rect;
+  /* for tiled monitors these are calculated, from untiled just copied */
+  float refresh_rate;
+  int width_mm;
+  int height_mm;
  gboolean is_primary;
  gboolean is_presentation; /* XXX: not yet used */
  gboolean in_fullscreen;
+  int scale;

  /* The primary or first output for this monitor, 0 if we can't figure out.
     It can be matched to a winsys_id of a MetaOutput.
@@ -203,6 +228,12 @@ struct _MetaMonitorInfo
     the primary one).
  */
  glong winsys_id;
+
+  guint32 tile_group_id;
+
+  int monitor_winsys_xid;
+  int n_outputs;
+  MetaOutput *outputs[META_MAX_OUTPUTS_PER_MONITOR];
 };

 /*
@@ -224,12 +255,13 @@ struct _MetaCRTCInfo {

 /*
 * MetaOutputInfo:
- * this is the same as MetaOutputInfo, but for CRTCs
+ * this is the same as MetaCRTCInfo, but for outputs
 */
 struct _MetaOutputInfo {
  MetaOutput  *output;
  gboolean     is_primary;
  gboolean     is_presentation;
+  gboolean     is_underscanning;
 };

 #define META_TYPE_MONITOR_MANAGER            (meta_monitor_manager_get_type ())
@@ -319,6 +351,13 @@ struct _MetaMonitorManagerClass
                          unsigned short     *,
                          unsigned short     *,
                          unsigned short     *);
+
+  void (*add_monitor) (MetaMonitorManager *,
+                       MetaMonitorInfo *);
+
+  void (*delete_monitor) (MetaMonitorManager *,
+                          int monitor_winsys_xid);
+
 };

 void                meta_monitor_manager_rebuild_derived   (MetaMonitorManager *manager);
@@ -370,6 +409,10 @@ gboolean           meta_monitor_manager_get_monitor_matrix (MetaMonitorManager *
                                                            MetaOutput         *output,
                                                            gfloat              matrix[6]);

+gint               meta_monitor_manager_get_monitor_at_point (MetaMonitorManager *manager,
+                                                              gfloat              x,
+                                                              gfloat              y);
+
 /* Returns true if transform causes width and height to be inverted
   This is true for the odd transforms in the enum */
 static inline gboolean
--- a/src/backends/meta-monitor-manager.c
+++ b/src/backends/meta-monitor-manager.c
@@ -71,6 +71,98 @@ meta_monitor_manager_init (MetaMonitorManager *manager)
 {
 }

+/*
+ * rules for constructing a tiled monitor
+ * 1. find a tile_group_id
+ * 2. iterate over all outputs for that tile group id
+ * 3. see if output has a crtc and if it is configured for the tile size
+ * 4. calculate the total tile size
+ * 5. set tile finished size
+ * 6. check for more tile_group_id
+*/
+static void
+construct_tile_monitor (MetaMonitorManager *manager,
+                        GArray *monitor_infos,
+                        guint32 tile_group_id)
+{
+  MetaMonitorInfo info;
+  unsigned i;
+
+  for (i = 0; i < monitor_infos->len; i++)
+    {
+      MetaMonitorInfo *pinfo = &g_array_index (monitor_infos, MetaMonitorInfo, i);
+
+      if (pinfo->tile_group_id == tile_group_id)
+        return;
+    }
+
+  /* didn't find it */
+  info.number = monitor_infos->len;
+  info.tile_group_id = tile_group_id;
+  info.is_presentation = FALSE;
+  info.refresh_rate = 0.0;
+  info.width_mm = 0;
+  info.height_mm = 0;
+  info.is_primary = FALSE;
+  info.rect.x = INT_MAX;
+  info.rect.y = INT_MAX;
+  info.rect.width = 0;
+  info.rect.height = 0;
+  info.winsys_id = 0;
+  info.n_outputs = 0;
+  info.monitor_winsys_xid = 0;
+
+  for (i = 0; i < manager->n_outputs; i++)
+    {
+      MetaOutput *output = &manager->outputs[i];
+
+      if (!output->tile_info.group_id)
+        continue;
+
+      if (output->tile_info.group_id != tile_group_id)
+        continue;
+
+      if (!output->crtc)
+        continue;
+
+      if (output->crtc->rect.width != (int)output->tile_info.tile_w ||
+          output->crtc->rect.height != (int)output->tile_info.tile_h)
+        continue;
+
+      if (output->tile_info.loc_h_tile == 0 && output->tile_info.loc_v_tile == 0)
+        {
+          info.refresh_rate = output->crtc->current_mode->refresh_rate;
+          info.width_mm = output->width_mm;
+          info.height_mm = output->height_mm;
+          info.winsys_id = output->winsys_id;
+        }
+
+      /* hack */
+      if (output->crtc->rect.x < info.rect.x)
+        info.rect.x = output->crtc->rect.x;
+      if (output->crtc->rect.y < info.rect.y)
+        info.rect.y = output->crtc->rect.y;
+
+      if (output->tile_info.loc_h_tile == 0)
+        info.rect.height += output->tile_info.tile_h;
+
+      if (output->tile_info.loc_v_tile == 0)
+        info.rect.width += output->tile_info.tile_w;
+
+      if (info.n_outputs > META_MAX_OUTPUTS_PER_MONITOR)
+        continue;
+
+      info.outputs[info.n_outputs++] = output;
+    }
+
+  /* if we don't have a winsys id, i.e. we haven't found tile 0,0
+     don't try and add this to the monitor infos */
+  if (!info.winsys_id)
+    return;
+
+  g_array_append_val (monitor_infos, info);
+}
+
 /*
 * make_logical_config:
 *
@@ -81,6 +173,7 @@ meta_monitor_manager_init (MetaMonitorManager *manager)
 static void
 make_logical_config (MetaMonitorManager *manager)
 {
+  MetaMonitorManagerClass *manager_class = META_MONITOR_MANAGER_GET_CLASS (manager);
  GArray *monitor_infos;
  unsigned int i, j;

@@ -91,6 +184,15 @@ make_logical_config (MetaMonitorManager *manager)
     for each of them, unless they reference a rectangle that
     is already there.
  */
+  /* for tiling we need to work out how many tiled outputs there are */
+  for (i = 0; i < manager->n_outputs; i++)
+    {
+      MetaOutput *output = &manager->outputs[i];
+
+      if (output->tile_info.group_id)
+        construct_tile_monitor (manager, monitor_infos, output->tile_info.group_id);
+    }
+
  for (i = 0; i < manager->n_crtcs; i++)
    {
      MetaCRTC *crtc = &manager->crtcs[i];
@@ -102,8 +204,8 @@ make_logical_config (MetaMonitorManager *manager)
      for (j = 0; j < monitor_infos->len; j++)
        {
          MetaMonitorInfo *info = &g_array_index (monitor_infos, MetaMonitorInfo, j);
-          if (meta_rectangle_equal (&crtc->rect,
-                                    &info->rect))
+          if (meta_rectangle_contains_rect (&info->rect,
+                                            &crtc->rect))
            {
              crtc->logical_monitor = info;
              break;
@@ -115,7 +217,10 @@ make_logical_config (MetaMonitorManager *manager)
          MetaMonitorInfo info;

          info.number = monitor_infos->len;
+          info.tile_group_id = 0;
          info.rect = crtc->rect;
+          info.refresh_rate = crtc->current_mode->refresh_rate;
+          info.scale = 1;
          info.is_primary = FALSE;
          /* This starts true because we want
             is_presentation only if all outputs are
@@ -125,7 +230,8 @@ make_logical_config (MetaMonitorManager *manager)
          info.is_presentation = TRUE;
          info.in_fullscreen = -1;
          info.winsys_id = 0;
-
+          info.n_outputs = 0;
+          info.monitor_winsys_xid = 0;
          g_array_append_val (monitor_infos, info);

          crtc->logical_monitor = &g_array_index (monitor_infos, MetaMonitorInfo,
@@ -147,6 +253,9 @@ make_logical_config (MetaMonitorManager *manager)
      if (output->crtc == NULL)
        continue;

+      if (output->tile_info.group_id)
+        continue;
+
      /* We must have a logical monitor on every CRTC at this point */
      g_assert (output->crtc->logical_monitor != NULL);

@@ -155,8 +264,17 @@ make_logical_config (MetaMonitorManager *manager)
      info->is_primary = info->is_primary || output->is_primary;
      info->is_presentation = info->is_presentation && output->is_presentation;

+      info->width_mm = output->width_mm;
+      info->height_mm = output->height_mm;
+
+      info->outputs[0] = output;
+      info->n_outputs = 1;
+
      if (output->is_primary || info->winsys_id == 0)
-        info->winsys_id = output->winsys_id;
+        {
+          info->scale = output->scale;
+          info->winsys_id = output->winsys_id;
+        }

      if (info->is_primary)
        manager->primary_monitor_index = info->number;
@@ -164,6 +282,10 @@ make_logical_config (MetaMonitorManager *manager)

  manager->n_monitor_infos = monitor_infos->len;
  manager->monitor_infos = (void*)g_array_free (monitor_infos, FALSE);
+
+  if (manager_class->add_monitor)
+    for (i = 0; i < manager->n_monitor_infos; i++)
+      manager_class->add_monitor (manager, &manager->monitor_infos[i]);
 }

 static void
@@ -264,6 +386,21 @@ meta_monitor_manager_free_mode_array (MetaMonitorMode *old_modes,
  g_free (old_modes);
 }

+static void
+meta_monitor_manager_free_crtc_array (MetaCRTC *old_crtcs,
+                                      int       n_old_crtcs)
+{
+  int i;
+
+  for (i = 0; i < n_old_crtcs; i++)
+    {
+      if (old_crtcs[i].driver_notify)
+        old_crtcs[i].driver_notify (&old_crtcs[i]);
+    }
+
+  g_free (old_crtcs);
+}
+
 static void
 meta_monitor_manager_finalize (GObject *object)
 {
@@ -271,8 +408,8 @@ meta_monitor_manager_finalize (GObject *object)

  meta_monitor_manager_free_output_array (manager->outputs, manager->n_outputs);
  meta_monitor_manager_free_mode_array (manager->modes, manager->n_modes);
+  meta_monitor_manager_free_crtc_array (manager->crtcs, manager->n_crtcs);
  g_free (manager->monitor_infos);
-  g_free (manager->crtcs);

  G_OBJECT_CLASS (meta_monitor_manager_parent_class)->finalize (object);
 }
@@ -353,16 +490,14 @@ static char *
 make_display_name (MetaMonitorManager *manager,
                   MetaOutput         *output)
 {
-  char *inches = NULL;
-  char *vendor_name = NULL;
-  char *ret;
+  g_autofree char *inches = NULL;
+  g_autofree char *vendor_name = NULL;

  switch (output->connector_type)
    {
    case META_CONNECTOR_TYPE_LVDS:
    case META_CONNECTOR_TYPE_eDP:
-      ret = g_strdup (_("Built-in display"));
-      goto out;
+      return g_strdup (_("Built-in display"));
    default:
      break;
    }
@@ -398,18 +533,12 @@ make_display_name (MetaMonitorManager *manager,
      /* 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);
+      return g_strdup_printf (_("%s %s"), vendor_name, inches);
    }
  else
    {
-      ret = g_strdup (vendor_name);
+      return g_strdup (vendor_name);
    }
-
- out:
-  g_free (inches);
-  g_free (vendor_name);
-
-  return ret;
 }

 static const char *
@@ -520,6 +649,10 @@ meta_monitor_manager_handle_get_resources (MetaDBusDisplayConfig *skeleton,
                             g_variant_new_boolean (output->is_presentation));
      g_variant_builder_add (&properties, "{sv}", "connector-type",
                             g_variant_new_string (get_connector_type_name (output->connector_type)));
+      g_variant_builder_add (&properties, "{sv}", "underscanning",
+                             g_variant_new_boolean (output->is_underscanning));
+      g_variant_builder_add (&properties, "{sv}", "supports-underscanning",
+                             g_variant_new_boolean (output->supports_underscanning));

      edid_file = manager_class->get_edid_file (manager, output);
      if (edid_file)
@@ -540,6 +673,20 @@ meta_monitor_manager_handle_get_resources (MetaDBusDisplayConfig *skeleton,
            }
        }

+      if (output->tile_info.group_id)
+        {
+          g_variant_builder_add (&properties, "{sv}", "tile",
+                                 g_variant_new ("(uuuuuuuu)",
+                                                output->tile_info.group_id,
+                                                output->tile_info.flags,
+                                                output->tile_info.max_h_tiles,
+                                                output->tile_info.max_v_tiles,
+                                                output->tile_info.loc_h_tile,
+                                                output->tile_info.loc_v_tile,
+                                                output->tile_info.tile_w,
+                                                output->tile_info.tile_h));
+        }
+
      g_variant_builder_add (&output_builder, "(uxiausauaua{sv})",
                             i, /* ID */
                             (gint64)output->winsys_id,
@@ -808,7 +955,7 @@ meta_monitor_manager_handle_apply_configuration  (MetaDBusDisplayConfig *skeleto
  while (g_variant_iter_loop (&output_iter, "(u@a{sv})", &output_index, &properties))
    {
      MetaOutputInfo *output_info;
-      gboolean primary, presentation;
+      gboolean primary, presentation, underscanning;

      if (output_index >= manager->n_outputs)
        {
@@ -827,6 +974,9 @@ meta_monitor_manager_handle_apply_configuration  (MetaDBusDisplayConfig *skeleto
      if (g_variant_lookup (properties, "presentation", "b", &presentation))
        output_info->is_presentation = presentation;

+      if (g_variant_lookup (properties, "underscanning", "b", &underscanning))
+        output_info->is_underscanning = underscanning;
+
      g_ptr_array_add (output_infos, output_info);
    }

@@ -1194,37 +1344,58 @@ meta_monitor_manager_read_current_config (MetaMonitorManager *manager)
  MetaOutput *old_outputs;
  MetaCRTC *old_crtcs;
  MetaMonitorMode *old_modes;
-  unsigned int n_old_outputs, n_old_modes;
+  unsigned int n_old_outputs, n_old_crtcs, n_old_modes;

  /* Some implementations of read_current use the existing information
   * we have available, so don't free the old configuration until after
   * read_current finishes. */
  old_outputs = manager->outputs;
  n_old_outputs = manager->n_outputs;
+  old_crtcs = manager->crtcs;
+  n_old_crtcs = manager->n_crtcs;
  old_modes = manager->modes;
  n_old_modes = manager->n_modes;
-  old_crtcs = manager->crtcs;

  manager->serial++;
  META_MONITOR_MANAGER_GET_CLASS (manager)->read_current (manager);

  meta_monitor_manager_free_output_array (old_outputs, n_old_outputs);
  meta_monitor_manager_free_mode_array (old_modes, n_old_modes);
-  g_free (old_crtcs);
+  meta_monitor_manager_free_crtc_array (old_crtcs, n_old_crtcs);
 }

 void
 meta_monitor_manager_rebuild_derived (MetaMonitorManager *manager)
 {
+  MetaMonitorManagerClass *manager_class = META_MONITOR_MANAGER_GET_CLASS (manager);
  MetaMonitorInfo *old_monitor_infos;
-
+  unsigned old_n_monitor_infos;
+  unsigned i, j;
  old_monitor_infos = manager->monitor_infos;
+  old_n_monitor_infos = manager->n_monitor_infos;

  if (manager->in_init)
    return;

  make_logical_config (manager);

+  if (manager_class->delete_monitor)
+    {
+      for (i = 0; i < old_n_monitor_infos; i++)
+        {
+          gboolean delete_mon = TRUE;
+          for (j = 0; j < manager->n_monitor_infos; j++)
+            {
+              if (manager->monitor_infos[j].monitor_winsys_xid == old_monitor_infos[i].monitor_winsys_xid)
+                {
+                  delete_mon = FALSE;
+                  break;
+                }
+            }
+          if (delete_mon)
+            manager_class->delete_monitor (manager, old_monitor_infos[i].monitor_winsys_xid);
+        }
+    }
  g_signal_emit_by_name (manager, "monitors-changed");

  g_free (old_monitor_infos);
@@ -1245,25 +1416,35 @@ meta_output_parse_edid (MetaOutput *meta_output,
  if (parsed_edid)
    {
      meta_output->vendor = g_strndup (parsed_edid->manufacturer_code, 4);
-      if (parsed_edid->dsc_product_name[0])
-        meta_output->product = g_strndup (parsed_edid->dsc_product_name, 14);
-      else
-        meta_output->product = g_strdup_printf ("0x%04x", (unsigned) parsed_edid->product_code);
-      if (parsed_edid->dsc_serial_number[0])
-        meta_output->serial = g_strndup (parsed_edid->dsc_serial_number, 14);
-      else
-        meta_output->serial = g_strdup_printf ("0x%08x", parsed_edid->serial_number);
+      if (!g_utf8_validate (meta_output->vendor, -1, NULL))
+        g_clear_pointer (&meta_output->vendor, g_free);
+
+      meta_output->product = g_strndup (parsed_edid->dsc_product_name, 14);
+      if (!g_utf8_validate (meta_output->product, -1, NULL) ||
+          meta_output->product[0] == '\0')
+        {
+          g_clear_pointer (&meta_output->product, g_free);
+          meta_output->product = g_strdup_printf ("0x%04x", (unsigned) parsed_edid->product_code);
+        }
+
+      meta_output->serial = g_strndup (parsed_edid->dsc_serial_number, 14);
+      if (!g_utf8_validate (meta_output->serial, -1, NULL) ||
+          meta_output->serial[0] == '\0')
+        {
+          g_clear_pointer (&meta_output->serial, g_free);
+          meta_output->serial = g_strdup_printf ("0x%08x", parsed_edid->serial_number);
+        }

      g_free (parsed_edid);
    }

 out:
  if (!meta_output->vendor)
-    {
-      meta_output->vendor = g_strdup ("unknown");
-      meta_output->product = g_strdup ("unknown");
-      meta_output->serial = g_strdup ("unknown");
-    }
+    meta_output->vendor = g_strdup ("unknown");
+  if (!meta_output->product)
+    meta_output->product = g_strdup ("unknown");
+  if (!meta_output->serial)
+    meta_output->serial = g_strdup ("unknown");
 }

 void
@@ -1368,3 +1549,27 @@ meta_monitor_manager_get_monitor_for_output (MetaMonitorManager *manager,

  return -1;
 }
+
+gint
+meta_monitor_manager_get_monitor_at_point (MetaMonitorManager *manager,
+                                           gfloat              x,
+                                           gfloat              y)
+{
+  unsigned int i;
+
+  for (i = 0; i < manager->n_monitor_infos; i++)
+    {
+      MetaMonitorInfo *monitor = &manager->monitor_infos[i];
+      int left, right, top, bottom;
+
+      left = monitor->rect.x;
+      right = left + monitor->rect.width;
+      top = monitor->rect.y;
+      bottom = top + monitor->rect.height;
+
+      if ((x >= left) && (x < right) && (y >= top) && (y < bottom))
+	return i;
+    }
+
+  return -1;
+}
--- a/src/backends/meta-stage.c
+++ b/src/backends/meta-stage.c
@@ -41,6 +41,7 @@ typedef struct {

 struct _MetaStagePrivate {
  MetaOverlay cursor_overlay;
+  gboolean is_active;
 };
 typedef struct _MetaStagePrivate MetaStagePrivate;

@@ -126,15 +127,41 @@ meta_stage_paint (ClutterActor *actor)
  meta_overlay_paint (&priv->cursor_overlay);
 }

+static void
+meta_stage_activate (ClutterStage *actor)
+{
+  MetaStage *stage = META_STAGE (actor);
+  MetaStagePrivate *priv = meta_stage_get_instance_private (stage);
+
+  CLUTTER_STAGE_CLASS (meta_stage_parent_class)->activate (actor);
+
+  priv->is_active = TRUE;
+}
+
+static void
+meta_stage_deactivate (ClutterStage *actor)
+{
+  MetaStage *stage = META_STAGE (actor);
+  MetaStagePrivate *priv = meta_stage_get_instance_private (stage);
+
+  CLUTTER_STAGE_CLASS (meta_stage_parent_class)->deactivate (actor);
+
+  priv->is_active = FALSE;
+}
+
 static void
 meta_stage_class_init (MetaStageClass *klass)
 {
+  ClutterStageClass *stage_class = (ClutterStageClass *) klass;
  ClutterActorClass *actor_class = (ClutterActorClass *) klass;
  GObjectClass *object_class = (GObjectClass *) klass;

  object_class->finalize = meta_stage_finalize;

  actor_class->paint = meta_stage_paint;
+
+  stage_class->activate = meta_stage_activate;
+  stage_class->deactivate = meta_stage_deactivate;
 }

 static void
@@ -195,3 +222,43 @@ meta_stage_set_cursor (MetaStage     *stage,
  meta_overlay_set (&priv->cursor_overlay, texture, rect);
  queue_redraw_for_overlay (stage, &priv->cursor_overlay);
 }
+
+void
+meta_stage_set_active (MetaStage *stage,
+                       gboolean   is_active)
+{
+  MetaStagePrivate *priv = meta_stage_get_instance_private (stage);
+  ClutterEvent event = { 0 };
+
+  /* Used by the native backend to inform accessibility technologies
+   * about when the stage loses and gains input focus.
+   *
+   * For the X11 backend, clutter transparently takes care of this
+   * for us.
+   */
+
+  if (priv->is_active == is_active)
+    return;
+
+  event.type = CLUTTER_STAGE_STATE;
+  clutter_event_set_stage (&event, CLUTTER_STAGE (stage));
+  event.stage_state.changed_mask = CLUTTER_STAGE_STATE_ACTIVATED;
+
+  if (is_active)
+    event.stage_state.new_state = CLUTTER_STAGE_STATE_ACTIVATED;
+
+  /* Emitting this StageState event will result in the stage getting
+   * activated or deactivated (with the activated or deactivated signal
+   * getting emitted from the stage)
+   *
+   * FIXME: This won't update ClutterStage's own notion of its
+   * activeness. For that we would need to somehow trigger a
+   * _clutter_stage_update_state call, which will probably
+   * require new API in clutter. In practice, nothing relies
+   * on the ClutterStage's own notion of activeness when using
+   * the EGL backend.
+   *
+   * See http://bugzilla.gnome.org/746670
+   */
+  clutter_stage_event (CLUTTER_STAGE (stage), &event);
+}
--- a/src/backends/meta-stage.h
+++ b/src/backends/meta-stage.h
@@ -54,6 +54,9 @@ ClutterActor     *meta_stage_new                     (void);
 void meta_stage_set_cursor (MetaStage     *stage,
                            CoglTexture   *texture,
                            MetaRectangle *rect);
+
+void meta_stage_set_active (MetaStage *stage,
+                            gboolean   is_active);
 G_END_DECLS

 #endif /* META_STAGE_H */
--- a/src/backends/native/meta-backend-native.c
+++ b/src/backends/native/meta-backend-native.c
@@ -29,6 +29,7 @@

 #include <meta/main.h>
 #include <clutter/evdev/clutter-evdev.h>
+#include <libupower-glib/upower.h>

 #include "meta-barrier-native.h"
 #include "meta-idle-monitor-native.h"
@@ -39,10 +40,11 @@
 struct _MetaBackendNativePrivate
 {
  MetaLauncher *launcher;
-
  MetaBarrierManagerNative *barrier_manager;
-
-  GSettings *keyboard_settings;
+  UpClient *up_client;
+  guint sleep_signal_id;
+  GCancellable *cancellable;
+  GDBusConnection *system_bus;
 };
 typedef struct _MetaBackendNativePrivate MetaBackendNativePrivate;

@@ -56,9 +58,69 @@ meta_backend_native_finalize (GObject *object)

  meta_launcher_free (priv->launcher);

+  g_object_unref (priv->up_client);
+  if (priv->sleep_signal_id)
+    g_dbus_connection_signal_unsubscribe (priv->system_bus, priv->sleep_signal_id);
+  g_cancellable_cancel (priv->cancellable);
+  g_clear_object (&priv->cancellable);
+  g_clear_object (&priv->system_bus);
+
  G_OBJECT_CLASS (meta_backend_native_parent_class)->finalize (object);
 }

+static void
+prepare_for_sleep_cb (GDBusConnection *connection,
+                      const gchar     *sender_name,
+                      const gchar     *object_path,
+                      const gchar     *interface_name,
+                      const gchar     *signal_name,
+                      GVariant        *parameters,
+                      gpointer         user_data)
+{
+  gboolean suspending;
+  g_variant_get (parameters, "(b)", &suspending);
+  if (suspending)
+    return;
+  meta_idle_monitor_native_reset_idletime (meta_idle_monitor_get_core ());
+}
+
+static void
+system_bus_gotten_cb (GObject      *object,
+                      GAsyncResult *res,
+                      gpointer      user_data)
+{
+  MetaBackendNativePrivate *priv;
+  GDBusConnection *bus;
+
+  bus = g_bus_get_finish (res, NULL);
+  if (!bus)
+    return;
+
+  priv = meta_backend_native_get_instance_private (META_BACKEND_NATIVE (user_data));
+  priv->system_bus = bus;
+  priv->sleep_signal_id = g_dbus_connection_signal_subscribe (priv->system_bus,
+                                                              "org.freedesktop.login1",
+                                                              "org.freedesktop.login1.Manager",
+                                                              "PrepareForSleep",
+                                                              "/org/freedesktop/login1",
+                                                              NULL,
+                                                              G_DBUS_SIGNAL_FLAGS_NONE,
+                                                              prepare_for_sleep_cb,
+                                                              NULL,
+                                                              NULL);
+}
+
+static void
+lid_is_closed_changed_cb (UpClient   *client,
+                          GParamSpec *pspec,
+                          gpointer    user_data)
+{
+  if (up_client_get_lid_is_closed (client))
+    return;
+
+  meta_idle_monitor_native_reset_idletime (meta_idle_monitor_get_core ());
+}
+
 static void
 constrain_to_barriers (ClutterInputDevice *device,
                       guint32             time,
@@ -84,31 +146,6 @@ constrain_to_barriers (ClutterInputDevice *device,
 *
 */

-static gboolean
-check_all_screen_monitors(MetaMonitorInfo *monitors,
-			  unsigned         n_monitors,
-			  float            x,
-			  float            y)
-{
-  unsigned int i;
-
-  for (i = 0; i < n_monitors; i++)
-    {
-      MetaMonitorInfo *monitor = &monitors[i];
-      int left, right, top, bottom;
-
-      left = monitor->rect.x;
-      right = left + monitor->rect.width;
-      top = monitor->rect.y;
-      bottom = top + monitor->rect.height;
-
-      if ((x >= left) && (x < right) && (y >= top) && (y < bottom))
-	return TRUE;
-    }
-
-  return FALSE;
-}
-
 static void
 constrain_all_screen_monitors (ClutterInputDevice *device,
 			       MetaMonitorInfo    *monitors,
@@ -162,7 +199,6 @@ pointer_constrain_callback (ClutterInputDevice *device,
  MetaMonitorManager *monitor_manager;
  MetaMonitorInfo *monitors;
  unsigned int n_monitors;
-  gboolean ret;

  /* Constrain to barriers */
  constrain_to_barriers (device, time, new_x, new_y);
@@ -171,57 +207,22 @@ pointer_constrain_callback (ClutterInputDevice *device,
  monitors = meta_monitor_manager_get_monitor_infos (monitor_manager, &n_monitors);

  /* if we're moving inside a monitor, we're fine */
-  ret = check_all_screen_monitors(monitors, n_monitors, *new_x, *new_y);
-  if (ret == TRUE)
+  if (meta_monitor_manager_get_monitor_at_point (monitor_manager, *new_x, *new_y) >= 0)
    return;

  /* if we're trying to escape, clamp to the CRTC we're coming from */
  constrain_all_screen_monitors(device, monitors, n_monitors, new_x, new_y);
 }

-static void
-on_monitors_changed (MetaMonitorManager *monitor_manager,
-                     MetaBackend        *backend)
-{
-  ClutterDeviceManager *manager = clutter_device_manager_get_default ();
-  ClutterInputDevice *device = clutter_device_manager_get_core_device (manager, CLUTTER_POINTER_DEVICE);
-  MetaMonitorInfo *monitors, *primary;
-  unsigned int n_monitors;
-  ClutterPoint point;
-
-  if (!clutter_input_device_get_coords (device, NULL, &point))
-    return;
-
-  monitors = meta_monitor_manager_get_monitor_infos (monitor_manager, &n_monitors);
-
-  /* if we're inside a monitor, we're fine */
-  if (check_all_screen_monitors (monitors, n_monitors, point.x, point.y))
-    return;
-
-  /* warp the pointer to the primary monitor so it isn't lost */
-  primary = &monitors[meta_monitor_manager_get_primary_index (monitor_manager)];
-  meta_backend_warp_pointer (backend,
-                             primary->rect.x + primary->rect.width / 2,
-                             primary->rect.y + primary->rect.height / 2);
-}
-
 static void
 meta_backend_native_post_init (MetaBackend *backend)
 {
-  MetaMonitorManager *monitor_manager;
  ClutterDeviceManager *manager = clutter_device_manager_get_default ();

  META_BACKEND_CLASS (meta_backend_native_parent_class)->post_init (backend);

  clutter_evdev_set_pointer_constrain_callback (manager, pointer_constrain_callback,
                                                NULL, NULL);
-
-  monitor_manager = meta_backend_get_monitor_manager (backend);
-  g_signal_connect_object (monitor_manager, "monitors-changed",
-                           G_CALLBACK (on_monitors_changed), backend, G_CONNECT_AFTER);
-
-  /* make sure the pointer is in the visible area after init */
-  on_monitors_changed (monitor_manager, backend);
 }

 static MetaIdleMonitor *
@@ -331,6 +332,16 @@ meta_backend_native_init (MetaBackendNative *native)
  priv->launcher = meta_launcher_new ();

  priv->barrier_manager = meta_barrier_manager_native_new ();
+
+  priv->up_client = up_client_new ();
+  g_signal_connect (priv->up_client, "notify::lid-is-closed",
+                    G_CALLBACK (lid_is_closed_changed_cb), NULL);
+
+  priv->cancellable = g_cancellable_new ();
+  g_bus_get (G_BUS_TYPE_SYSTEM,
+             priv->cancellable,
+             system_bus_gotten_cb,
+             native);
 }

 gboolean
--- a/src/backends/native/meta-cursor-renderer-native.c
+++ b/src/backends/native/meta-cursor-renderer-native.c
@@ -43,6 +43,9 @@ struct _MetaCursorRendererNativePrivate
 {
  gboolean has_hw_cursor;

+  MetaCursorReference *last_cursor;
+  guint animation_timeout_id;
+
  int drm_fd;
  struct gbm_device *gbm;

@@ -59,6 +62,9 @@ meta_cursor_renderer_native_finalize (GObject *object)
  MetaCursorRendererNative *renderer = META_CURSOR_RENDERER_NATIVE (object);
  MetaCursorRendererNativePrivate *priv = meta_cursor_renderer_native_get_instance_private (renderer);

+  if (priv->animation_timeout_id)
+    g_source_remove (priv->animation_timeout_id);
+
  if (priv->gbm)
    gbm_device_destroy (priv->gbm);

@@ -147,12 +153,66 @@ should_have_hw_cursor (MetaCursorRenderer *renderer)
    return FALSE;
 }

+static gboolean
+meta_cursor_renderer_native_update_animation (MetaCursorRendererNative *native)
+{
+  MetaCursorRendererNativePrivate *priv = meta_cursor_renderer_native_get_instance_private (native);
+  MetaCursorReference *cursor;
+
+  priv->animation_timeout_id = 0;
+  cursor = meta_cursor_renderer_get_cursor (META_CURSOR_RENDERER (native));
+  meta_cursor_reference_tick_frame (cursor);
+  meta_cursor_renderer_force_update (META_CURSOR_RENDERER (native));
+  meta_cursor_renderer_native_force_update (native);
+
+  return G_SOURCE_REMOVE;
+}
+
+static void
+meta_cursor_renderer_native_trigger_frame (MetaCursorRendererNative *native)
+{
+  MetaCursorRendererNativePrivate *priv = meta_cursor_renderer_native_get_instance_private (native);
+  MetaCursorReference *cursor;
+  gboolean cursor_change;
+  guint delay;
+
+  cursor = meta_cursor_renderer_get_cursor (META_CURSOR_RENDERER (native));
+  cursor_change = cursor != priv->last_cursor;
+  priv->last_cursor = cursor;
+
+  if (!cursor_change && priv->animation_timeout_id)
+    return;
+
+  if (priv->animation_timeout_id)
+    {
+      g_source_remove (priv->animation_timeout_id);
+      priv->animation_timeout_id = 0;
+    }
+
+  if (cursor && meta_cursor_reference_is_animated (cursor))
+    {
+      delay = meta_cursor_reference_get_current_frame_time (cursor);
+
+      if (delay == 0)
+        return;
+
+      priv->animation_timeout_id =
+        g_timeout_add (delay,
+                       (GSourceFunc) meta_cursor_renderer_native_update_animation,
+                       native);
+      g_source_set_name_by_id (priv->animation_timeout_id,
+                               "[mutter] meta_cursor_renderer_native_update_animation");
+    }
+}
+
 static gboolean
 meta_cursor_renderer_native_update_cursor (MetaCursorRenderer *renderer)
 {
  MetaCursorRendererNative *native = META_CURSOR_RENDERER_NATIVE (renderer);
  MetaCursorRendererNativePrivate *priv = meta_cursor_renderer_native_get_instance_private (native);

+  meta_cursor_renderer_native_trigger_frame (native);
+
  priv->has_hw_cursor = should_have_hw_cursor (renderer);
  update_hw_cursor (native, FALSE);
  return priv->has_hw_cursor;
--- a/src/backends/native/meta-input-settings-native.c
+++ b/src/backends/native/meta-input-settings-native.c
@@ -169,10 +169,10 @@ meta_input_settings_native_set_scroll_method (MetaInputSettings            *sett
      scroll_method = LIBINPUT_CONFIG_SCROLL_NO_SCROLL;
      break;
    case G_DESKTOP_TOUCHPAD_SCROLL_METHOD_EDGE_SCROLLING:
-      scroll_method = LIBINPUT_CONFIG_SCROLL_2FG;
+      scroll_method = LIBINPUT_CONFIG_SCROLL_EDGE;
      break;
    case G_DESKTOP_TOUCHPAD_SCROLL_METHOD_TWO_FINGER_SCROLLING:
-      scroll_method = LIBINPUT_CONFIG_SCROLL_EDGE;
+      scroll_method = LIBINPUT_CONFIG_SCROLL_2FG;
      break;
    default:
      g_assert_not_reached ();
--- a/src/backends/native/meta-launcher.c
+++ b/src/backends/native/meta-launcher.c
@@ -43,6 +43,7 @@

 #include "backends/meta-backend-private.h"
 #include "meta-cursor-renderer-native.h"
+#include "meta-idle-monitor-native.h"

 struct _MetaLauncher
 {
@@ -110,6 +111,7 @@ session_unpause (void)

    clutter_actor_queue_redraw (stage);
    meta_cursor_renderer_native_force_update (META_CURSOR_RENDERER_NATIVE (renderer));
+    meta_idle_monitor_native_reset_idletime (meta_idle_monitor_get_core ());
  }
 }

@@ -128,9 +130,8 @@ take_device (Login1Session *session_proxy,
             GCancellable  *cancellable,
             GError       **error)
 {
-  gboolean ret = FALSE;
-  GVariant *fd_variant = NULL;
-  GUnixFDList *fd_list = NULL;
+  g_autoptr (GVariant) fd_variant = NULL;
+  g_autoptr (GUnixFDList) fd_list = NULL;
  int fd = -1;

  if (!login1_session_call_take_device_sync (session_proxy,
@@ -142,21 +143,14 @@ take_device (Login1Session *session_proxy,
                                             &fd_list,
                                             cancellable,
                                             error))
-    goto out;
+    return FALSE;

  fd = g_unix_fd_list_get (fd_list, g_variant_get_handle (fd_variant), error);
  if (fd == -1)
-    goto out;
+    return FALSE;

  *out_fd = fd;
-  ret = TRUE;
-
- out:
-  if (fd_variant)
-    g_variant_unref (fd_variant);
-  if (fd_list)
-    g_object_unref (fd_list);
-  return ret;
+  return TRUE;
 }

 static gboolean
@@ -164,22 +158,16 @@ get_device_info_from_path (const char *path,
                           int        *out_major,
                           int        *out_minor)
 {
-  gboolean ret = FALSE;
  int r;
  struct stat st;

  r = stat (path, &st);
-  if (r < 0)
-    goto out;
-  if (!S_ISCHR (st.st_mode))
-    goto out;
+  if (r < 0 || !S_ISCHR (st.st_mode))
+    return FALSE;

  *out_major = major (st.st_rdev);
  *out_minor = minor (st.st_rdev);
-  ret = TRUE;
-
- out:
-  return ret;
+  return TRUE;
 }

 static gboolean
@@ -187,22 +175,16 @@ get_device_info_from_fd (int  fd,
                         int *out_major,
                         int *out_minor)
 {
-  gboolean ret = FALSE;
  int r;
  struct stat st;

  r = fstat (fd, &st);
-  if (r < 0)
-    goto out;
-  if (!S_ISCHR (st.st_mode))
-    goto out;
+  if (r < 0 || !S_ISCHR (st.st_mode))
+    return FALSE;

  *out_major = major (st.st_rdev);
  *out_minor = minor (st.st_rdev);
-  ret = TRUE;
-
- out:
-  return ret;
+  return TRUE;
 }

 static int
--- a/src/backends/native/meta-monitor-manager-kms.c
+++ b/src/backends/native/meta-monitor-manager-kms.c
@@ -55,8 +55,19 @@ typedef struct {

  uint32_t dpms_prop_id;
  uint32_t edid_blob_id;
+  uint32_t tile_blob_id;
+
+  int suggested_x;
+  int suggested_y;
+  uint32_t hotplug_mode_update;
 } MetaOutputKms;

+typedef struct {
+  uint32_t underscan_prop_id;
+  uint32_t underscan_hborder_prop_id;
+  uint32_t underscan_vborder_prop_id;
+} MetaCRTCKms;
+
 struct _MetaMonitorManagerKms
 {
  MetaMonitorManager parent_instance;
@@ -104,7 +115,7 @@ make_output_name (drmModeConnector *connector)
  static const char * const connector_type_names[] = {
    "unknown", "VGA", "DVII", "DVID", "DVID", "Composite",
    "SVIDEO", "LVDS", "Component", "9PinDIN", "DisplayPort",
-    "HDMIA", "HDMIB", "TV", "eDP"
+    "HDMIA", "HDMIB", "TV", "eDP", "Virtual", "DSI"
  };
  const char *connector_type_name;

@@ -137,6 +148,12 @@ meta_monitor_mode_destroy_notify (MetaMonitorMode *output)
  g_slice_free (drmModeModeInfo, output->driver_private);
 }

+static void
+meta_crtc_destroy_notify (MetaCRTC *crtc)
+{
+  g_free (crtc->driver_private);
+}
+
 static gboolean
 drm_mode_equal (gconstpointer one,
                gconstpointer two)
@@ -181,24 +198,67 @@ drm_mode_hash (gconstpointer ptr)
 }

 static void
-find_properties (MetaMonitorManagerKms *manager_kms,
-                 MetaOutputKms         *output_kms)
+find_connector_properties (MetaMonitorManagerKms *manager_kms,
+                           MetaOutputKms         *output_kms)
 {
-  drmModePropertyPtr prop;
  int i;

+  output_kms->hotplug_mode_update = 0;
+  output_kms->suggested_x = -1;
+  output_kms->suggested_y = -1;
  for (i = 0; i < output_kms->connector->count_props; i++)
    {
-      prop = drmModeGetProperty (manager_kms->fd, output_kms->connector->props[i]);
+      drmModePropertyPtr prop = drmModeGetProperty (manager_kms->fd, output_kms->connector->props[i]);
      if (!prop)
        continue;

-      if ((prop->flags & DRM_MODE_PROP_ENUM) &&
-          strcmp(prop->name, "DPMS") == 0)
+      if ((prop->flags & DRM_MODE_PROP_ENUM) && strcmp (prop->name, "DPMS") == 0)
        output_kms->dpms_prop_id = prop->prop_id;
-      else if ((prop->flags & DRM_MODE_PROP_BLOB) &&
-               strcmp (prop->name, "EDID") == 0)
+      else if ((prop->flags & DRM_MODE_PROP_BLOB) && strcmp (prop->name, "EDID") == 0)
        output_kms->edid_blob_id = output_kms->connector->prop_values[i];
+      else if ((prop->flags & DRM_MODE_PROP_BLOB) &&
+               strcmp (prop->name, "TILE") == 0)
+        output_kms->tile_blob_id = output_kms->connector->prop_values[i];
+      else if ((prop->flags & DRM_MODE_PROP_RANGE) &&
+               strcmp (prop->name, "suggested X") == 0)
+        output_kms->suggested_x = output_kms->connector->prop_values[i];
+      else if ((prop->flags & DRM_MODE_PROP_RANGE) &&
+               strcmp (prop->name, "suggested Y") == 0)
+        output_kms->suggested_y = output_kms->connector->prop_values[i];
+      else if ((prop->flags & DRM_MODE_PROP_RANGE) &&
+               strcmp (prop->name, "hotplug_mode_update") == 0)
+        output_kms->hotplug_mode_update = output_kms->connector->prop_values[i];
+      
+      drmModeFreeProperty (prop);
+    }
+}
+
+static void
+find_crtc_properties (MetaMonitorManagerKms *manager_kms,
+                      MetaCRTC *meta_crtc)
+{
+  MetaCRTCKms *crtc_kms;
+  drmModeObjectPropertiesPtr props;
+  size_t i;
+
+  crtc_kms = meta_crtc->driver_private;
+
+  props = drmModeObjectGetProperties (manager_kms->fd, meta_crtc->crtc_id, DRM_MODE_OBJECT_CRTC);
+  if (!props)
+    return;
+
+  for (i = 0; i < props->count_props; i++)
+    {
+      drmModePropertyPtr prop = drmModeGetProperty (manager_kms->fd, props->props[i]);
+      if (!prop)
+        continue;
+
+      if ((prop->flags & DRM_MODE_PROP_ENUM) && strcmp (prop->name, "underscan") == 0)
+        crtc_kms->underscan_prop_id = prop->prop_id;
+      else if ((prop->flags & DRM_MODE_PROP_RANGE) && strcmp (prop->name, "underscan hborder") == 0)
+        crtc_kms->underscan_hborder_prop_id = prop->prop_id;
+      else if ((prop->flags & DRM_MODE_PROP_RANGE) && strcmp (prop->name, "underscan vborder") == 0)
+        crtc_kms->underscan_vborder_prop_id = prop->prop_id;

      drmModeFreeProperty (prop);
    }
@@ -233,6 +293,47 @@ read_output_edid (MetaMonitorManagerKms *manager_kms,
    }
 }

+static gboolean
+output_get_tile_info (MetaMonitorManagerKms *manager_kms,
+                      MetaOutput            *output)
+{
+  MetaOutputKms *output_kms = output->driver_private;
+  drmModePropertyBlobPtr tile_blob = NULL;
+  int ret;
+
+  if (output_kms->tile_blob_id == 0)
+    return FALSE;
+
+  tile_blob = drmModeGetPropertyBlob (manager_kms->fd, output_kms->tile_blob_id);
+  if (!tile_blob)
+    {
+      meta_warning ("Failed to read TILE of output %s: %s\n", output->name, strerror(errno));
+      return FALSE;
+    }
+
+  if (tile_blob->length > 0)
+    {
+      ret = sscanf ((char *)tile_blob->data, "%d:%d:%d:%d:%d:%d:%d:%d",
+                    &output->tile_info.group_id,
+                    &output->tile_info.flags,
+                    &output->tile_info.max_h_tiles,
+                    &output->tile_info.max_v_tiles,
+                    &output->tile_info.loc_h_tile,
+                    &output->tile_info.loc_v_tile,
+                    &output->tile_info.tile_w,
+                    &output->tile_info.tile_h);
+
+      if (ret != 8)
+        return FALSE;
+      return TRUE;
+    }
+  else
+    {
+      drmModeFreePropertyBlob (tile_blob);
+      return FALSE;
+    }
+}
+
 static MetaMonitorMode *
 find_meta_mode (MetaMonitorManager    *manager,
                const drmModeModeInfo *drm_mode)
@@ -442,6 +543,10 @@ meta_monitor_manager_kms_read_current (MetaMonitorManager *manager)
          height = MAX (height, meta_crtc->rect.y + meta_crtc->rect.height);
        }

+      meta_crtc->driver_private = g_new0 (MetaCRTCKms, 1);
+      meta_crtc->driver_notify = (GDestroyNotify) meta_crtc_destroy_notify;
+      find_crtc_properties (manager_kms, meta_crtc);
+
      drmModeFreeCrtc (crtc);
    }

@@ -472,8 +577,6 @@ meta_monitor_manager_kms_read_current (MetaMonitorManager *manager)
 	  meta_output->name = make_output_name (connector);
 	  meta_output->width_mm = connector->mmWidth;
 	  meta_output->height_mm = connector->mmHeight;
-	  meta_output->suggested_x = -1;
-	  meta_output->suggested_y = -1;

          switch (connector->subpixel)
            {
@@ -498,11 +601,17 @@ meta_monitor_manager_kms_read_current (MetaMonitorManager *manager)
              break;
            }

+	  meta_output->preferred_mode = NULL;
 	  meta_output->n_modes = connector->count_modes;
 	  meta_output->modes = g_new0 (MetaMonitorMode *, meta_output->n_modes);
-	  for (j = 0; j < meta_output->n_modes; j++)
+	  for (j = 0; j < meta_output->n_modes; j++) {
            meta_output->modes[j] = find_meta_mode (manager, &connector->modes[j]);
-	  meta_output->preferred_mode = meta_output->modes[0];
+            if (connector->modes[j].type & DRM_MODE_TYPE_PREFERRED)
+              meta_output->preferred_mode = meta_output->modes[j];
+          }
+
+          if (!meta_output->preferred_mode)
+            meta_output->preferred_mode = meta_output->modes[0];

          output_kms->connector = connector;
          output_kms->n_encoders = connector->count_encoders;
@@ -567,8 +676,11 @@ meta_monitor_manager_kms_read_current (MetaMonitorManager *manager)
              meta_output->is_presentation = FALSE;
            }

-          find_properties (manager_kms, output_kms);
-
+          find_connector_properties (manager_kms, output_kms);
+          meta_output->suggested_x = output_kms->suggested_x;
+          meta_output->suggested_y = output_kms->suggested_y;
+          meta_output->hotplug_mode_update = output_kms->hotplug_mode_update;
+          
          edid = read_output_edid (manager_kms, meta_output);
          meta_output_parse_edid (meta_output, edid);
          g_bytes_unref (edid);
@@ -578,6 +690,8 @@ meta_monitor_manager_kms_read_current (MetaMonitorManager *manager)

          meta_output->scale = get_output_scale (manager, meta_output);

+          output_get_tile_info (manager_kms, meta_output);
+
          /* FIXME: backlight is a very driver specific thing unfortunately,
             every DDX does its own thing, and the dumb KMS API does not include it.

@@ -723,8 +837,9 @@ meta_monitor_manager_kms_set_power_save_mode (MetaMonitorManager *manager,

      if (output_kms->dpms_prop_id != 0)
        {
-          int ok = drmModeConnectorSetProperty(manager_kms->fd, meta_output->winsys_id,
-                                               output_kms->dpms_prop_id, state);
+          int ok = drmModeObjectSetProperty (manager_kms->fd, meta_output->winsys_id,
+                                             DRM_MODE_OBJECT_CONNECTOR,
+                                             output_kms->dpms_prop_id, state);

          if (ok < 0)
            meta_warning ("Failed to set power save mode for output %s: %s\n",
@@ -748,6 +863,48 @@ crtc_free (CoglKmsCrtc *crtc)
  g_slice_free (CoglKmsCrtc, crtc);
 }

+static void
+set_underscan (MetaMonitorManagerKms *manager_kms,
+               MetaOutput *output)
+{
+  if (!output->crtc)
+    return;
+
+  MetaCRTC *crtc = output->crtc;
+  MetaCRTCKms *crtc_kms = crtc->driver_private;
+  if (!crtc_kms->underscan_prop_id)
+    return;
+
+  if (output->is_underscanning)
+    {
+      drmModeObjectSetProperty (manager_kms->fd, crtc->crtc_id,
+                                DRM_MODE_OBJECT_CRTC,
+                                crtc_kms->underscan_prop_id, (uint64_t) 1);
+
+      if (crtc_kms->underscan_hborder_prop_id)
+        {
+          uint64_t value = crtc->current_mode->width * 0.05;
+          drmModeObjectSetProperty (manager_kms->fd, crtc->crtc_id,
+                                    DRM_MODE_OBJECT_CRTC,
+                                    crtc_kms->underscan_hborder_prop_id, value);
+        }
+      if (crtc_kms->underscan_vborder_prop_id)
+        {
+          uint64_t value = crtc->current_mode->height * 0.05;
+          drmModeObjectSetProperty (manager_kms->fd, crtc->crtc_id,
+                                    DRM_MODE_OBJECT_CRTC,
+                                    crtc_kms->underscan_vborder_prop_id, value);
+        }
+
+    }
+  else
+    {
+      drmModeObjectSetProperty (manager_kms->fd, crtc->crtc_id,
+                                DRM_MODE_OBJECT_CRTC,
+                                crtc_kms->underscan_prop_id, (uint64_t) 0);
+    }
+}
+
 static void
 meta_monitor_manager_kms_apply_configuration (MetaMonitorManager *manager,
                                              MetaCRTCInfo       **crtcs,
@@ -755,6 +912,7 @@ meta_monitor_manager_kms_apply_configuration (MetaMonitorManager *manager,
                                              MetaOutputInfo     **outputs,
                                              unsigned int         n_outputs)
 {
+  MetaMonitorManagerKms *manager_kms = META_MONITOR_MANAGER_KMS (manager);
  ClutterBackend *backend;
  CoglContext *cogl_context;
  CoglDisplay *cogl_display;
@@ -900,6 +1058,9 @@ meta_monitor_manager_kms_apply_configuration (MetaMonitorManager *manager,

      output->is_primary = output_info->is_primary;
      output->is_presentation = output_info->is_presentation;
+      output->is_underscanning = output_info->is_underscanning;
+
+      set_underscan (manager_kms, output);
    }

  /* Disable outputs not mentioned in the list */
--- a/src/backends/x11/meta-backend-x11.c
+++ b/src/backends/x11/meta-backend-x11.c
@@ -46,6 +46,14 @@
 #include "display-private.h"
 #include "compositor/compositor-private.h"

+typedef enum {
+  /* We're a traditional CM running under the host. */
+  META_BACKEND_X11_MODE_COMPOSITOR,
+
+  /* We're a nested X11 client */
+  META_BACKEND_X11_MODE_NESTED,
+} MetaBackendX11Mode;
+
 struct _MetaBackendX11Private
 {
  /* The host X11 display */
@@ -53,6 +61,8 @@ struct _MetaBackendX11Private
  xcb_connection_t *xcb;
  GSource *source;

+  MetaBackendX11Mode mode;
+
  int xsync_event_base;
  int xsync_error_base;

@@ -102,7 +112,7 @@ translate_device_event (MetaBackendX11 *x11,
      /* This codepath should only ever trigger as an X11 compositor,
       * and never under nested, as under nested all backend events
       * should be reported with respect to the stage window. */
-      g_assert (!meta_is_wayland_compositor ());
+      g_assert (priv->mode == META_BACKEND_X11_MODE_COMPOSITOR);

      device_event->event = stage_window;

@@ -133,6 +143,8 @@ static void
 translate_crossing_event (MetaBackendX11 *x11,
                          XIEnterEvent   *enter_event)
 {
+  MetaBackendX11Private *priv = meta_backend_x11_get_instance_private (x11);
+
  /* Throw out weird events generated by grabs. */
  if (enter_event->mode == XINotifyGrab ||
      enter_event->mode == XINotifyUngrab)
@@ -141,7 +153,15 @@ translate_crossing_event (MetaBackendX11 *x11,
      return;
    }

-  enter_event->event = meta_backend_x11_get_xwindow (x11);
+  Window stage_window = meta_backend_x11_get_xwindow (x11);
+  if (enter_event->event != stage_window)
+    {
+      /* See above for the rationale for this... */
+      g_assert (priv->mode == META_BACKEND_X11_MODE_COMPOSITOR);
+      enter_event->event = meta_backend_x11_get_xwindow (x11);
+      enter_event->event_x = enter_event->root_x;
+      enter_event->event_y = enter_event->root_y;
+    }
 }

 static void
@@ -430,7 +450,9 @@ meta_backend_x11_post_init (MetaBackend *backend)
      meta_fatal ("X server doesn't have the XInput extension, version 2.2 or newer\n");
  }

-  take_touch_grab (backend);
+  /* We only take the passive touch grab if we are a X11 compositor */
+  if (priv->mode == META_BACKEND_X11_MODE_COMPOSITOR)
+    take_touch_grab (backend);

  priv->xcb = XGetXCBConnection (priv->xdisplay);
  if (!xkb_x11_setup_xkb_extension (priv->xcb,
@@ -461,13 +483,18 @@ meta_backend_x11_create_idle_monitor (MetaBackend *backend,
 static MetaMonitorManager *
 meta_backend_x11_create_monitor_manager (MetaBackend *backend)
 {
-  /* 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 g_object_new (META_TYPE_MONITOR_MANAGER_DUMMY, NULL);
+  MetaBackendX11 *x11 = META_BACKEND_X11 (backend);
+  MetaBackendX11Private *priv = meta_backend_x11_get_instance_private (x11);

-  return g_object_new (META_TYPE_MONITOR_MANAGER_XRANDR, NULL);
+  switch (priv->mode)
+    {
+    case META_BACKEND_X11_MODE_COMPOSITOR:
+      return g_object_new (META_TYPE_MONITOR_MANAGER_XRANDR, NULL);
+    case META_BACKEND_X11_MODE_NESTED:
+      return g_object_new (META_TYPE_MONITOR_MANAGER_DUMMY, NULL);
+    default:
+      g_assert_not_reached ();
+    }
 }

 static MetaCursorRenderer *
@@ -721,7 +748,10 @@ static void
 meta_backend_x11_update_screen_size (MetaBackend *backend,
                                     int width, int height)
 {
-  if (meta_is_wayland_compositor ())
+  MetaBackendX11 *x11 = META_BACKEND_X11 (backend);
+  MetaBackendX11Private *priv = meta_backend_x11_get_instance_private (x11);
+
+  if (priv->mode == META_BACKEND_X11_MODE_NESTED)
    {
      /* For a nested wayland session, we want to go through Clutter to update the
       * toplevel window size, rather than doing it directly.
@@ -755,9 +785,21 @@ meta_backend_x11_select_stage_events (MetaBackend *backend)
  XISetMask (mask.mask, XI_FocusIn);
  XISetMask (mask.mask, XI_FocusOut);
  XISetMask (mask.mask, XI_Motion);
-  XIClearMask (mask.mask, XI_TouchBegin);
-  XIClearMask (mask.mask, XI_TouchEnd);
-  XIClearMask (mask.mask, XI_TouchUpdate);
+
+  if (priv->mode == META_BACKEND_X11_MODE_NESTED)
+    {
+      /* When we're an X11 compositor, we can't take these events or else
+       * replaying events from our passive root window grab will cause
+       * them to come back to us.
+       *
+       * When we're a nested application, we want to behave like any other
+       * application, so select these events like normal apps do.
+       */
+      XISetMask (mask.mask, XI_TouchBegin);
+      XISetMask (mask.mask, XI_TouchEnd);
+      XISetMask (mask.mask, XI_TouchUpdate);
+    }
+
  XISelectEvents (priv->xdisplay, xwin, &mask, 1);
 }

@@ -783,8 +825,15 @@ meta_backend_x11_class_init (MetaBackendX11Class *klass)
 static void
 meta_backend_x11_init (MetaBackendX11 *x11)
 {
+  MetaBackendX11Private *priv = meta_backend_x11_get_instance_private (x11);
+
  /* We do X11 event retrieval ourselves */
  clutter_x11_disable_event_retrieval ();
+
+  if (meta_is_wayland_compositor ())
+    priv->mode = META_BACKEND_X11_MODE_NESTED;
+  else
+    priv->mode = META_BACKEND_X11_MODE_COMPOSITOR;
 }

 Display *
--- a/src/backends/x11/meta-input-settings-x11.c
+++ b/src/backends/x11/meta-input-settings-x11.c
@@ -26,6 +26,7 @@
 #include "meta-backend-x11.h"
 #include "meta-input-settings-x11.h"

+#include <string.h>
 #include <gdk/gdkx.h>
 #include <X11/Xatom.h>
 #include <X11/extensions/XInput2.h>
@@ -35,6 +36,41 @@

 G_DEFINE_TYPE (MetaInputSettingsX11, meta_input_settings_x11, META_TYPE_INPUT_SETTINGS)

+static void *
+get_property (ClutterInputDevice *device,
+              const gchar        *property,
+              Atom                type,
+              int                 format,
+              gulong              nitems)
+{
+  MetaBackend *backend = meta_get_backend ();
+  Display *xdisplay = meta_backend_x11_get_xdisplay (META_BACKEND_X11 (backend));
+  gulong nitems_ret, bytes_after_ret;
+  int rc, device_id, format_ret;
+  Atom property_atom, type_ret;
+  guchar *data_ret = NULL;
+
+  property_atom = XInternAtom (xdisplay, property, True);
+  if (!property_atom)
+    return NULL;
+
+  device_id = clutter_input_device_get_device_id (device);
+
+  rc = XIGetProperty (xdisplay, device_id, property_atom,
+                      0, 10, False, type, &type_ret, &format_ret,
+                      &nitems_ret, &bytes_after_ret, &data_ret);
+  if (rc == Success && type_ret == type && format_ret == format && nitems_ret >= nitems)
+    {
+      if (nitems_ret > nitems)
+        g_warning ("Property '%s' for device '%s' returned %lu items, expected %lu",
+                   property, clutter_input_device_get_device_name (device), nitems_ret, nitems);
+      return data_ret;
+    }
+
+  meta_XFree (data_ret);
+  return NULL;
+}
+
 static void
 change_property (ClutterInputDevice *device,
                 const gchar        *property,
@@ -45,23 +81,23 @@ change_property (ClutterInputDevice *device,
 {
  MetaBackend *backend = meta_get_backend ();
  Display *xdisplay = meta_backend_x11_get_xdisplay (META_BACKEND_X11 (backend));
-  gulong nitems_ret, bytes_after_ret;
-  int rc, device_id, format_ret;
-  Atom property_atom, type_ret;
+  int device_id;
+  Atom property_atom;
  guchar *data_ret;

-  property_atom = XInternAtom (xdisplay, property, False);
+  property_atom = XInternAtom (xdisplay, property, True);
+  if (!property_atom)
+    return;
+
  device_id = clutter_input_device_get_device_id (device);

-  rc = XIGetProperty (xdisplay, device_id, property_atom,
-                      0, 0, False, type, &type_ret, &format_ret,
-                      &nitems_ret, &bytes_after_ret, &data_ret);
+  data_ret = get_property (device, property, type, format, nitems);
+  if (!data_ret)
+    return;

+  XIChangeProperty (xdisplay, device_id, property_atom, type,
+                    format, XIPropModeReplace, data, nitems);
  meta_XFree (data_ret);
-
-  if (rc == Success && type_ret == type && format_ret == format)
-    XIChangeProperty (xdisplay, device_id, property_atom, type,
-                      format, XIPropModeReplace, data, nitems);
 }

 static void
@@ -70,6 +106,12 @@ meta_input_settings_x11_set_send_events (MetaInputSettings        *settings,
                                         GDesktopDeviceSendEvents  mode)
 {
  guchar values[2] = { 0 }; /* disabled, disabled-on-external-mouse */
+  guchar *available;
+
+  available = get_property (device, "libinput Send Events Modes Available",
+                            XA_INTEGER, 8, 2);
+  if (!available)
+    return;

  switch (mode)
    {
@@ -83,8 +125,14 @@ meta_input_settings_x11_set_send_events (MetaInputSettings        *settings,
      break;
    }

-  change_property (device, "libinput Send Events Mode Enabled",
-                   XA_INTEGER, 8, &values, 2);
+  if ((values[0] && !available[0]) || (values[1] && !available[1]))
+    g_warning ("Device '%s' does not support sendevents mode %d\n",
+               clutter_input_device_get_device_name (device), mode);
+  else
+    change_property (device, "libinput Send Events Mode Enabled",
+                     XA_INTEGER, 8, &values, 2);
+
+  meta_XFree (available);
 }

 static void
@@ -156,6 +204,12 @@ meta_input_settings_x11_set_scroll_method (MetaInputSettings            *setting
                                           GDesktopTouchpadScrollMethod  mode)
 {
  guchar values[3] = { 0 }; /* 2fg, edge, button. The last value is unused */
+  guchar *available;
+
+  available = get_property (device, "libinput Scroll Methods Available",
+                            XA_INTEGER, 8, 3);
+  if (!available)
+    return;

  switch (mode)
    {
@@ -171,8 +225,14 @@ meta_input_settings_x11_set_scroll_method (MetaInputSettings            *setting
      g_assert_not_reached ();
    }

-  change_property (device, "libinput Scroll Method Enabled",
-                   XA_INTEGER, 8, &values, 3);
+  if ((values[0] && !available[0]) || (values[1] && !available[1]))
+    g_warning ("Device '%s' does not support scroll mode %d\n",
+               clutter_input_device_get_device_name (device), mode);
+  else
+    change_property (device, "libinput Scroll Method Enabled",
+                     XA_INTEGER, 8, &values, 3);
+
+  meta_XFree (available);
 }

 static void
@@ -180,7 +240,7 @@ meta_input_settings_x11_set_scroll_button (MetaInputSettings  *settings,
                                           ClutterInputDevice *device,
                                           guint               button)
 {
-  change_property (device, "libinput Scroll Method Enabled",
+  change_property (device, "libinput Button Scrolling Button",
                   XA_INTEGER, 32, &button, 1);
 }

@@ -190,16 +250,28 @@ meta_input_settings_x11_set_click_method (MetaInputSettings           *settings,
                                          GDesktopTouchpadClickMethod  mode)
 {
  guchar values[2] = { 0 }; /* buttonareas, clickfinger */
+  guchar *defaults, *available;
+
+  available = get_property (device, "libinput Click Methods Available",
+                            XA_INTEGER, 8, 2);
+  if (!available)
+    return;

  switch (mode)
    {
+    case G_DESKTOP_TOUCHPAD_CLICK_METHOD_DEFAULT:
+      defaults = get_property (device, "libinput Click Method Enabled Default",
+                               XA_INTEGER, 8, 2);
+      if (!defaults)
+        break;
+      memcpy (values, defaults, 2);
+      meta_XFree (defaults);
+      break;
    case G_DESKTOP_TOUCHPAD_CLICK_METHOD_NONE:
      break;
    case G_DESKTOP_TOUCHPAD_CLICK_METHOD_AREAS:
      values[0] = 1;
      break;
-    case G_DESKTOP_TOUCHPAD_CLICK_METHOD_DEFAULT:
-      /* XXX: We can't be much smarter yet, x11 doesn't expose default settings */
    case G_DESKTOP_TOUCHPAD_CLICK_METHOD_FINGERS:
      values[1] = 1;
      break;
@@ -208,8 +280,14 @@ meta_input_settings_x11_set_click_method (MetaInputSettings           *settings,
      return;
  }

-  change_property (device, "libinput Click Method Enabled",
-                   XA_INTEGER, 8, &values, 2);
+  if ((values[0] && !available[0]) || (values[1] && !available[1]))
+    g_warning ("Device '%s' does not support click method %d\n",
+               clutter_input_device_get_device_name (device), mode);
+  else
+    change_property (device, "libinput Click Method Enabled",
+                     XA_INTEGER, 8, &values, 2);
+
+  meta_XFree(available);
 }

 static void
--- a/src/backends/x11/meta-monitor-manager-xrandr.c
+++ b/src/backends/x11/meta-monitor-manager-xrandr.c
@@ -58,6 +58,7 @@ struct _MetaMonitorManagerXrandr
  XRRScreenResources *resources;
  int rr_event_base;
  int rr_error_base;
+  gboolean has_randr15;
 };

 struct _MetaMonitorManagerXrandrClass
@@ -194,11 +195,10 @@ static gboolean
 output_get_boolean_property (MetaMonitorManagerXrandr *manager_xrandr,
                             MetaOutput *output, const char *propname)
 {
-  gboolean value = FALSE;
  Atom atom, actual_type;
  int actual_format;
  unsigned long nitems, bytes_after;
-  unsigned char *buffer;
+  g_autofree unsigned char *buffer = NULL;

  atom = XInternAtom (manager_xrandr->xdisplay, propname, False);
  XRRGetOutputProperty (manager_xrandr->xdisplay,
@@ -209,13 +209,9 @@ output_get_boolean_property (MetaMonitorManagerXrandr *manager_xrandr,
                        &nitems, &bytes_after, &buffer);

  if (actual_type != XA_CARDINAL || actual_format != 32 || nitems < 1)
-    goto out;
+    return FALSE;

-  value = ((int*)buffer)[0];
-
- out:
-  XFree (buffer);
-  return value;
+  return ((int*)buffer)[0];
 }

 static gboolean
@@ -225,6 +221,76 @@ output_get_presentation_xrandr (MetaMonitorManagerXrandr *manager_xrandr,
  return output_get_boolean_property (manager_xrandr, output, "_MUTTER_PRESENTATION_OUTPUT");
 }

+static gboolean
+output_get_underscanning_xrandr (MetaMonitorManagerXrandr *manager_xrandr,
+                                 MetaOutput               *output)
+{
+  Atom atom, actual_type;
+  int actual_format;
+  unsigned long nitems, bytes_after;
+  g_autofree unsigned char *buffer = NULL;
+  g_autofree char *str = NULL;
+
+  atom = XInternAtom (manager_xrandr->xdisplay, "underscan", False);
+  XRRGetOutputProperty (manager_xrandr->xdisplay,
+                        (XID)output->winsys_id,
+                        atom,
+                        0, G_MAXLONG, False, False, XA_ATOM,
+                        &actual_type, &actual_format,
+                        &nitems, &bytes_after, &buffer);
+
+  if (actual_type != XA_ATOM || actual_format != 32 || nitems < 1)
+    return FALSE;
+
+  str = XGetAtomName (manager_xrandr->xdisplay, *(Atom *)buffer);
+  return (strcmp (str, "on") == 0);
+}
+
+static gboolean
+output_get_supports_underscanning_xrandr (MetaMonitorManagerXrandr *manager_xrandr,
+                                          MetaOutput               *output)
+{
+  Atom atom, actual_type;
+  int actual_format, i;
+  unsigned long nitems, bytes_after;
+  g_autofree unsigned char *buffer = NULL;
+  XRRPropertyInfo *property_info;
+  Atom *values;
+  gboolean supports_underscanning = FALSE;
+
+  atom = XInternAtom (manager_xrandr->xdisplay, "underscan", False);
+  XRRGetOutputProperty (manager_xrandr->xdisplay,
+                        (XID)output->winsys_id,
+                        atom,
+                        0, G_MAXLONG, False, False, XA_ATOM,
+                        &actual_type, &actual_format,
+                        &nitems, &bytes_after, &buffer);
+
+  if (actual_type != XA_ATOM || actual_format != 32 || nitems < 1)
+    return FALSE;
+
+  property_info = XRRQueryOutputProperty (manager_xrandr->xdisplay,
+                                          (XID) output->winsys_id,
+                                          atom);
+  values = (Atom *) property_info->values;
+
+  for (i = 0; i < property_info->num_values; i++)
+    {
+      /* The output supports underscanning if "on" is a valid value
+       * for the underscan property.
+       */
+      char *name = XGetAtomName (manager_xrandr->xdisplay, values[i]);
+      if (strcmp (name, "on") == 0)
+        supports_underscanning = TRUE;
+
+      XFree (name);
+    }
+
+  XFree (property_info);
+
+  return supports_underscanning;
+}
+
 static int
 normalize_backlight (MetaOutput *output,
                     int         hw_value)
@@ -241,7 +307,7 @@ output_get_backlight_xrandr (MetaMonitorManagerXrandr *manager_xrandr,
  Atom atom, actual_type;
  int actual_format;
  unsigned long nitems, bytes_after;
-  unsigned char *buffer;
+  g_autofree unsigned char *buffer = NULL;

  atom = XInternAtom (manager_xrandr->xdisplay, "Backlight", False);
  XRRGetOutputProperty (manager_xrandr->xdisplay,
@@ -252,12 +318,9 @@ output_get_backlight_xrandr (MetaMonitorManagerXrandr *manager_xrandr,
                        &nitems, &bytes_after, &buffer);

  if (actual_type != XA_INTEGER || actual_format != 32 || nitems < 1)
-    goto out;
+    return FALSE;

  value = ((int*)buffer)[0];
-
- out:
-  XFree (buffer);
  if (value > 0)
    return normalize_backlight (output, value);
  else
@@ -270,7 +333,7 @@ output_get_backlight_limits_xrandr (MetaMonitorManagerXrandr *manager_xrandr,
 {
  Atom atom;
  xcb_connection_t *xcb_conn;
-  xcb_randr_query_output_property_reply_t *reply;
+  g_autofree xcb_randr_query_output_property_reply_t *reply;

  atom = XInternAtom (manager_xrandr->xdisplay, "Backlight", False);

@@ -288,15 +351,12 @@ output_get_backlight_limits_xrandr (MetaMonitorManagerXrandr *manager_xrandr,
  if (!reply->range || reply->length != 2)
    {
      meta_verbose ("backlight %s was not range\n", output->name);
-      goto out;
+      return;
    }

  int32_t *values = xcb_randr_query_output_property_valid_values (reply);
  output->backlight_min = values[0];
  output->backlight_max = values[1];
-
-out:
-  free (reply);
 }

 static int
@@ -376,6 +436,42 @@ read_output_edid (MetaMonitorManagerXrandr *manager_xrandr,
  return NULL;
 }

+static void
+output_get_tile_info (MetaMonitorManagerXrandr *manager_xrandr,
+                      MetaOutput *output)
+{
+  Atom tile_atom;
+  unsigned char *prop;
+  unsigned long nitems, bytes_after;
+  int actual_format;
+  Atom actual_type;
+
+  if (manager_xrandr->has_randr15 == FALSE)
+    return;
+
+  tile_atom = XInternAtom (manager_xrandr->xdisplay, "TILE", FALSE);
+  XRRGetOutputProperty (manager_xrandr->xdisplay,
+                        output->winsys_id,
+                        tile_atom, 0, 100, False,
+                        False, AnyPropertyType,
+                        &actual_type, &actual_format,
+                        &nitems, &bytes_after, &prop);
+
+  if (actual_type == XA_INTEGER && actual_format == 32 && nitems == 8)
+    {
+      long *values = (long *)prop;
+      output->tile_info.group_id = values[0];
+      output->tile_info.flags = values[1];
+      output->tile_info.max_h_tiles = values[2];
+      output->tile_info.max_v_tiles = values[3];
+      output->tile_info.loc_h_tile = values[4];
+      output->tile_info.loc_v_tile = values[5];
+      output->tile_info.tile_w = values[6];
+      output->tile_info.tile_h = values[7];
+    }
+  XFree (prop);
+}
+
 static gboolean
 output_get_hotplug_mode_update (MetaMonitorManagerXrandr *manager_xrandr,
                                MetaOutput               *output)
@@ -447,11 +543,10 @@ static MetaConnectorType
 output_get_connector_type_from_prop (MetaMonitorManagerXrandr *manager_xrandr,
                                     MetaOutput               *output)
 {
-  MetaConnectorType ret = META_CONNECTOR_TYPE_Unknown;
  Atom atom, actual_type, connector_type_atom;
  int actual_format;
  unsigned long nitems, bytes_after;
-  unsigned char *buffer;
+  g_autofree unsigned char *buffer = NULL;

  atom = XInternAtom (manager_xrandr->xdisplay, "ConnectorType", False);
  XRRGetOutputProperty (manager_xrandr->xdisplay,
@@ -462,14 +557,10 @@ output_get_connector_type_from_prop (MetaMonitorManagerXrandr *manager_xrandr,
                        &nitems, &bytes_after, &buffer);

  if (actual_type != XA_ATOM || actual_format != 32 || nitems < 1)
-    goto out;
+    return META_CONNECTOR_TYPE_Unknown;

  connector_type_atom = ((Atom *) buffer)[0];
-  ret = connector_type_from_atom (manager_xrandr, connector_type_atom);
-
- out:
-  meta_XFree (buffer);
-  return ret;
+  return connector_type_from_atom (manager_xrandr, connector_type_atom);
 }

 static MetaConnectorType
@@ -506,7 +597,7 @@ output_get_connector_type_from_name (MetaMonitorManagerXrandr *manager_xrandr,
  if (g_str_has_prefix (name, "Virtual"))
    return META_CONNECTOR_TYPE_VIRTUAL;
  if (g_str_has_prefix (name, "Composite"))
-    return META_CONNECTOR_TYPE_VGA;
+    return META_CONNECTOR_TYPE_Composite;
  if (g_str_has_prefix (name, "S-video"))
    return META_CONNECTOR_TYPE_SVIDEO;
  if (g_str_has_prefix (name, "TV"))
@@ -704,6 +795,7 @@ meta_monitor_manager_xrandr_read_current (MetaMonitorManager *manager)
 	  meta_output->suggested_y = output_get_suggested_y (manager_xrandr, meta_output);
          meta_output->connector_type = output_get_connector_type (manager_xrandr, meta_output);

+	  output_get_tile_info (manager_xrandr, meta_output);
 	  meta_output->n_modes = output->nmode;
 	  meta_output->modes = g_new0 (MetaMonitorMode *, meta_output->n_modes);
 	  for (j = 0; j < meta_output->n_modes; j++)
@@ -756,6 +848,8 @@ meta_monitor_manager_xrandr_read_current (MetaMonitorManager *manager)

 	  meta_output->is_primary = ((XID)meta_output->winsys_id == primary_output);
 	  meta_output->is_presentation = output_get_presentation_xrandr (manager_xrandr, meta_output);
+	  meta_output->is_underscanning = output_get_underscanning_xrandr (manager_xrandr, meta_output);
+          meta_output->supports_underscanning = output_get_supports_underscanning_xrandr (manager_xrandr, meta_output);
 	  output_get_backlight_limits_xrandr (manager_xrandr, meta_output);

 	  if (!(meta_output->backlight_min == 0 && meta_output->backlight_max == 0))
@@ -869,11 +963,58 @@ output_set_presentation_xrandr (MetaMonitorManagerXrandr *manager_xrandr,
  int value = presentation;

  atom = XInternAtom (manager_xrandr->xdisplay, "_MUTTER_PRESENTATION_OUTPUT", False);
-  XRRChangeOutputProperty (manager_xrandr->xdisplay,
-                           (XID)output->winsys_id,
-                           atom,
-                           XA_CARDINAL, 32, PropModeReplace,
-                           (unsigned char*) &value, 1);
+
+  xcb_randr_change_output_property (XGetXCBConnection (manager_xrandr->xdisplay),
+                                    (XID)output->winsys_id,
+                                    atom, XCB_ATOM_CARDINAL, 32,
+                                    XCB_PROP_MODE_REPLACE,
+                                    1, &value);
+}
+
+static void
+output_set_underscanning_xrandr (MetaMonitorManagerXrandr *manager_xrandr,
+                                 MetaOutput               *output,
+                                 gboolean                  underscanning)
+{
+  Atom prop, valueatom;
+  const char *value;
+
+  prop = XInternAtom (manager_xrandr->xdisplay, "underscan", False);
+
+  value = underscanning ? "on" : "off";
+  valueatom = XInternAtom (manager_xrandr->xdisplay, value, False);
+
+  xcb_randr_change_output_property (XGetXCBConnection (manager_xrandr->xdisplay),
+                                    (XID)output->winsys_id,
+                                    prop, XCB_ATOM_ATOM, 32,
+                                    XCB_PROP_MODE_REPLACE,
+                                    1, &valueatom);
+
+  /* Configure the border at the same time. Currently, we use a
+   * 5% of the width/height of the mode. In the future, we should
+   * make the border configurable. */
+  if (underscanning)
+    {
+      uint32_t border_value;
+
+      prop = XInternAtom (manager_xrandr->xdisplay, "underscan hborder", False);
+      border_value = output->crtc->current_mode->width * 0.05;
+
+      xcb_randr_change_output_property (XGetXCBConnection (manager_xrandr->xdisplay),
+                                        (XID)output->winsys_id,
+                                        prop, XCB_ATOM_INTEGER, 32,
+                                        XCB_PROP_MODE_REPLACE,
+                                        1, &border_value);
+
+      prop = XInternAtom (manager_xrandr->xdisplay, "underscan vborder", False);
+      border_value = output->crtc->current_mode->height * 0.05;
+
+      xcb_randr_change_output_property (XGetXCBConnection (manager_xrandr->xdisplay),
+                                        (XID)output->winsys_id,
+                                        prop, XCB_ATOM_INTEGER, 32,
+                                        XCB_PROP_MODE_REPLACE,
+                                        1, &border_value);
+    }
 }

 static void
@@ -992,7 +1133,7 @@ meta_monitor_manager_xrandr_apply_configuration (MetaMonitorManager *manager,
      if (crtc_info->mode != NULL)
        {
          MetaMonitorMode *mode;
-          XID *outputs;
+          g_autofree XID *outputs = NULL;
          unsigned int j, n_outputs;
          int width, height;
          Status ok;
@@ -1029,7 +1170,7 @@ meta_monitor_manager_xrandr_apply_configuration (MetaMonitorManager *manager,
                            (unsigned)(crtc->crtc_id), (unsigned)(mode->mode_id),
                            mode->width, mode->height, (float)mode->refresh_rate,
                            crtc_info->x, crtc_info->y, crtc_info->transform);
-              goto next;
+              continue;
            }

          if (meta_monitor_transform_is_rotated (crtc_info->transform))
@@ -1049,9 +1190,6 @@ meta_monitor_manager_xrandr_apply_configuration (MetaMonitorManager *manager,
          crtc->rect.height = height;
          crtc->current_mode = mode;
          crtc->transform = crtc_info->transform;
-
-        next:
-          g_free (outputs);
        }
    }

@@ -1071,8 +1209,14 @@ meta_monitor_manager_xrandr_apply_configuration (MetaMonitorManager *manager,
                                      output_info->output,
                                      output_info->is_presentation);

+      if (output_get_supports_underscanning_xrandr (manager_xrandr, output_info->output))
+        output_set_underscanning_xrandr (manager_xrandr,
+                                         output_info->output,
+                                         output_info->is_underscanning);
+
      output->is_primary = output_info->is_primary;
      output->is_presentation = output_info->is_presentation;
+      output->is_underscanning = output_info->is_underscanning;
    }

  /* Disable outputs not mentioned in the list */
@@ -1106,11 +1250,12 @@ meta_monitor_manager_xrandr_change_backlight (MetaMonitorManager *manager,
  hw_value = round ((double)value / 100.0 * output->backlight_max + output->backlight_min);

  atom = XInternAtom (manager_xrandr->xdisplay, "Backlight", False);
-  XRRChangeOutputProperty (manager_xrandr->xdisplay,
-                           (XID)output->winsys_id,
-                           atom,
-                           XA_INTEGER, 32, PropModeReplace,
-                           (unsigned char *) &hw_value, 1);
+
+  xcb_randr_change_output_property (XGetXCBConnection (manager_xrandr->xdisplay),
+                                    (XID)output->winsys_id,
+                                    atom, XCB_ATOM_INTEGER, 32,
+                                    XCB_PROP_MODE_REPLACE,
+                                    1, &hw_value);

  /* We're not selecting for property notifies, so update the value immediately */
  output->backlight = normalize_backlight (output, hw_value);
@@ -1158,6 +1303,88 @@ meta_monitor_manager_xrandr_set_crtc_gamma (MetaMonitorManager *manager,
  XRRFreeGamma (gamma);
 }

+#ifdef HAVE_XRANDR15
+static void
+meta_monitor_manager_xrandr_add_monitor(MetaMonitorManager *manager,
+                                        MetaMonitorInfo *monitor)
+{
+  MetaMonitorManagerXrandr *manager_xrandr = META_MONITOR_MANAGER_XRANDR (manager);
+  XRRMonitorInfo *m;
+  int o;
+  Atom name;
+  char name_buf[40];
+
+  if (manager_xrandr->has_randr15 == FALSE)
+    return;
+
+  if (monitor->n_outputs <= 1)
+    return;
+
+  if (monitor->outputs[0]->product)
+    snprintf (name_buf, 40, "%s-%d", monitor->outputs[0]->product, monitor->outputs[0]->tile_info.group_id);
+  else
+    snprintf (name_buf, 40, "Tiled-%d", monitor->outputs[0]->tile_info.group_id);
+
+  name = XInternAtom (manager_xrandr->xdisplay, name_buf, False);
+  monitor->monitor_winsys_xid = name;
+  m = XRRAllocateMonitor (manager_xrandr->xdisplay, monitor->n_outputs);
+  if (!m)
+    return;
+  m->name = name;
+  m->primary = monitor->is_primary;
+  m->automatic = True;
+
+  for (o = 0; o < monitor->n_outputs; o++) {
+    MetaOutput *output = monitor->outputs[o];
+    m->outputs[o] = output->winsys_id;
+  }
+  XRRSetMonitor (manager_xrandr->xdisplay,
+                 DefaultRootWindow (manager_xrandr->xdisplay),
+                 m);
+  XRRFreeMonitors (m);
+}
+
+static void
+meta_monitor_manager_xrandr_delete_monitor(MetaMonitorManager *manager,
+                                           int monitor_winsys_xid)
+{
+  MetaMonitorManagerXrandr *manager_xrandr = META_MONITOR_MANAGER_XRANDR (manager);
+
+  if (manager_xrandr->has_randr15 == FALSE)
+    return;
+  XRRDeleteMonitor (manager_xrandr->xdisplay,
+                    DefaultRootWindow (manager_xrandr->xdisplay),
+                    monitor_winsys_xid);
+}
+
+static void
+meta_monitor_manager_xrandr_init_monitors(MetaMonitorManagerXrandr *manager_xrandr)
+{
+  XRRMonitorInfo *m;
+  int n, i;
+
+  if (manager_xrandr->has_randr15 == FALSE)
+    return;
+
+  /* delete any tiled monitors setup, as mutter will want to recreate
+     things in its image */
+  m = XRRGetMonitors (manager_xrandr->xdisplay,
+                      DefaultRootWindow (manager_xrandr->xdisplay),
+                      FALSE, &n);
+  if (n == -1)
+    return;
+
+  for (i = 0; i < n; i++)
+    {
+      if (m[i].noutput > 1)
+        XRRDeleteMonitor (manager_xrandr->xdisplay,
+                          DefaultRootWindow (manager_xrandr->xdisplay),
+                          m[i].name);
+    }
+  XRRFreeMonitors (m);
+}
+#endif
+
 static void
 meta_monitor_manager_xrandr_init (MetaMonitorManagerXrandr *manager_xrandr)
 {
@@ -1173,6 +1400,7 @@ meta_monitor_manager_xrandr_init (MetaMonitorManagerXrandr *manager_xrandr)
    }
  else
    {
+      int major_version, minor_version;
      /* We only use ScreenChangeNotify, but GDK uses the others,
 	 and we don't want to step on its toes */
      XRRSelectInput (manager_xrandr->xdisplay,
@@ -1180,6 +1408,17 @@ meta_monitor_manager_xrandr_init (MetaMonitorManagerXrandr *manager_xrandr)
 		      RRScreenChangeNotifyMask
 		      | RRCrtcChangeNotifyMask
 		      | RROutputPropertyNotifyMask);
+
+      manager_xrandr->has_randr15 = FALSE;
+      XRRQueryVersion (manager_xrandr->xdisplay, &major_version,
+                       &minor_version);
+#ifdef HAVE_XRANDR15
+      if (major_version > 1 ||
+          (major_version == 1 &&
+           minor_version >= 5))
+        manager_xrandr->has_randr15 = TRUE;
+      meta_monitor_manager_xrandr_init_monitors (manager_xrandr);
+#endif
    }
 }

@@ -1210,6 +1449,10 @@ meta_monitor_manager_xrandr_class_init (MetaMonitorManagerXrandrClass *klass)
  manager_class->change_backlight = meta_monitor_manager_xrandr_change_backlight;
  manager_class->get_crtc_gamma = meta_monitor_manager_xrandr_get_crtc_gamma;
  manager_class->set_crtc_gamma = meta_monitor_manager_xrandr_set_crtc_gamma;
+#ifdef HAVE_XRANDR15
+  manager_class->add_monitor = meta_monitor_manager_xrandr_add_monitor;
+  manager_class->delete_monitor = meta_monitor_manager_xrandr_delete_monitor;
+#endif
 }

 gboolean
--- a/src/compositor/compositor.c
+++ b/src/compositor/compositor.c
@@ -37,11 +37,6 @@
 * compositor needs to delay hiding the windows until the switch
 * workspace animation completes.
 *
- * meta_compositor_maximize_window() and meta_compositor_unmaximize_window()
- * are transitions within the visible state. The window is resized __before__
- * the call, so it may be necessary to readjust the display based on the
- * old_rect to start the animation.
- *
 * # Containers #
 *
 * There's two containers in the stage that are used to place window actors, here
@@ -769,23 +764,14 @@ meta_compositor_hide_window (MetaCompositor *compositor,
 }

 void
-meta_compositor_maximize_window (MetaCompositor    *compositor,
-                                 MetaWindow        *window,
-				 MetaRectangle	   *old_rect,
-				 MetaRectangle	   *new_rect)
+meta_compositor_size_change_window (MetaCompositor    *compositor,
+                                    MetaWindow        *window,
+                                    MetaSizeChange     which_change,
+                                    MetaRectangle     *old_frame_rect,
+                                    MetaRectangle     *old_buffer_rect)
 {
  MetaWindowActor *window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (window));
-  meta_window_actor_maximize (window_actor, old_rect, new_rect);
-}
-
-void
-meta_compositor_unmaximize_window (MetaCompositor    *compositor,
-                                   MetaWindow        *window,
-				   MetaRectangle     *old_rect,
-				   MetaRectangle     *new_rect)
-{
-  MetaWindowActor *window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (window));
-  meta_window_actor_unmaximize (window_actor, old_rect, new_rect);
+  meta_window_actor_size_change (window_actor, META_SIZE_CHANGE_MAXIMIZE, old_frame_rect, old_buffer_rect);
 }

 void
--- a/src/compositor/meta-background.c
+++ b/src/compositor/meta-background.c
@@ -71,6 +71,8 @@ enum

 G_DEFINE_TYPE (MetaBackground, meta_background, G_TYPE_OBJECT)

+static GSList *all_backgrounds = NULL;
+
 static void
 free_fbos (MetaBackground *self)
 {
@@ -305,6 +307,8 @@ meta_background_dispose (GObject *object)
 static void
 meta_background_finalize (GObject *object)
 {
+  all_backgrounds = g_slist_remove (all_backgrounds, object);
+
  G_OBJECT_CLASS (meta_background_parent_class)->finalize (object);
 }

@@ -347,6 +351,7 @@ meta_background_init (MetaBackground *self)
  self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
                                            META_TYPE_BACKGROUND,
                                            MetaBackgroundPrivate);
+  all_backgrounds = g_slist_prepend (all_backgrounds, self);
 }

 static void
@@ -913,3 +918,12 @@ meta_background_set_blend (MetaBackground          *self,
  free_wallpaper_texture (self);
  mark_changed (self);
 }
+
+void
+meta_background_refresh_all (void)
+{
+  GSList *l;
+
+  for (l = all_backgrounds; l; l = l->next)
+    mark_changed (l->data);
+}
--- a/src/compositor/meta-feedback-actor.c
+++ b/src/compositor/meta-feedback-actor.c
@@ -187,7 +187,7 @@ meta_feedback_actor_set_anchor (MetaFeedbackActor *self,
  if (priv->anchor_x == anchor_x && priv->anchor_y == anchor_y)
    return;

-  if (priv->anchor_x != anchor_y)
+  if (priv->anchor_x != anchor_x)
    {
      priv->anchor_x = anchor_x;
      g_object_notify (G_OBJECT (self), "anchor-x");
--- a/src/compositor/meta-plugin-manager.c
+++ b/src/compositor/meta-plugin-manager.c
@@ -149,7 +149,7 @@ meta_plugin_manager_kill_switch_workspace (MetaPluginManager *plugin_mgr)
 gboolean
 meta_plugin_manager_event_simple (MetaPluginManager *plugin_mgr,
                                  MetaWindowActor   *actor,
-                                  unsigned long      event)
+                                  MetaPluginEffect   event)
 {
  MetaPlugin *plugin = plugin_mgr->plugin;
  MetaPluginClass *klass = META_PLUGIN_GET_CLASS (plugin);
@@ -196,67 +196,32 @@ meta_plugin_manager_event_simple (MetaPluginManager *plugin_mgr,
        }
      break;
    default:
-      g_warning ("Incorrect handler called for event %lu", event);
+      g_warning ("Incorrect handler called for event %d", event);
    }

  return retval;
 }

-/*
- * The public method that the compositor hooks into for maximize and unmaximize
- * events.
- *
- * Returns TRUE if the plugin handled the event type (i.e.,
- * if the return value is FALSE, there will be no subsequent call to the
- * manager completed() callback, and the compositor must ensure that any
- * appropriate post-effect cleanup is carried out.
- */
 gboolean
-meta_plugin_manager_event_maximize (MetaPluginManager *plugin_mgr,
-                                    MetaWindowActor   *actor,
-                                    unsigned long      event,
-                                    gint               target_x,
-                                    gint               target_y,
-                                    gint               target_width,
-                                    gint               target_height)
+meta_plugin_manager_event_size_change (MetaPluginManager *plugin_mgr,
+                                       MetaWindowActor   *actor,
+                                       MetaSizeChange     which_change,
+                                       MetaRectangle     *old_frame_rect,
+                                       MetaRectangle     *old_buffer_rect)
 {
  MetaPlugin *plugin = plugin_mgr->plugin;
  MetaPluginClass *klass = META_PLUGIN_GET_CLASS (plugin);
  MetaDisplay *display = plugin_mgr->compositor->display;
-  gboolean retval = FALSE;

  if (display->display_opening)
    return FALSE;

-  switch (event)
-    {
-    case META_PLUGIN_MAXIMIZE:
-      if (klass->maximize)
-        {
-          retval = TRUE;
-          meta_plugin_manager_kill_window_effects (plugin_mgr,
-                                                   actor);
-          klass->maximize (plugin, actor,
-                           target_x, target_y,
-                           target_width, target_height);
-        }
-      break;
-    case META_PLUGIN_UNMAXIMIZE:
-      if (klass->unmaximize)
-        {
-          retval = TRUE;
-          meta_plugin_manager_kill_window_effects (plugin_mgr,
-                                                   actor);
-          klass->unmaximize (plugin, actor,
-                             target_x, target_y,
-                             target_width, target_height);
-        }
-      break;
-    default:
-      g_warning ("Incorrect handler called for event %lu", event);
-    }
+  if (!klass->size_change)
+    return FALSE;

-  return retval;
+  meta_plugin_manager_kill_window_effects (plugin_mgr, actor);
+  klass->size_change (plugin, actor, which_change, old_frame_rect, old_buffer_rect);
+  return TRUE;
 }

 /*
--- a/src/compositor/meta-plugin-manager.h
+++ b/src/compositor/meta-plugin-manager.h
@@ -24,20 +24,17 @@

 #include <meta/types.h>
 #include <meta/screen.h>
-
-#define  META_PLUGIN_FROM_MANAGER_
 #include <meta/meta-plugin.h>
-#undef   META_PLUGIN_FROM_MANAGER_

-#define META_PLUGIN_MINIMIZE         (1<<0)
-#define META_PLUGIN_MAXIMIZE         (1<<1)
-#define META_PLUGIN_UNMAXIMIZE       (1<<2)
-#define META_PLUGIN_MAP              (1<<3)
-#define META_PLUGIN_DESTROY          (1<<4)
-#define META_PLUGIN_SWITCH_WORKSPACE (1<<5)
-#define META_PLUGIN_UNMINIMIZE       (1<<6)
-
-#define META_PLUGIN_ALL_EFFECTS      (~0)
+typedef enum {
+  META_PLUGIN_NONE,
+  META_PLUGIN_MINIMIZE,
+  META_PLUGIN_MAP,
+  META_PLUGIN_DESTROY,
+  META_PLUGIN_SWITCH_WORKSPACE,
+  META_PLUGIN_UNMINIMIZE,
+  META_PLUGIN_SIZE_CHANGE,
+} MetaPluginEffect;

 /**
 * MetaPluginManager: (skip)
@@ -51,15 +48,13 @@ void     meta_plugin_manager_load         (const gchar       *plugin_name);

 gboolean meta_plugin_manager_event_simple (MetaPluginManager *mgr,
                                           MetaWindowActor   *actor,
-                                           unsigned long      event);
+                                           MetaPluginEffect   event);

-gboolean meta_plugin_manager_event_maximize    (MetaPluginManager *mgr,
-                                                MetaWindowActor   *actor,
-                                                unsigned long      event,
-                                                gint               target_x,
-                                                gint               target_y,
-                                                gint               target_width,
-                                                gint               target_height);
+gboolean meta_plugin_manager_event_size_change    (MetaPluginManager *mgr,
+                                                   MetaWindowActor   *actor,
+                                                   MetaSizeChange     which_change,
+                                                   MetaRectangle     *old_frame_rect,
+                                                   MetaRectangle     *old_buffer_rect);

 gboolean meta_plugin_manager_switch_workspace (MetaPluginManager   *mgr,
                                               gint                 from,
--- a/src/compositor/meta-plugin.c
+++ b/src/compositor/meta-plugin.c
@@ -118,17 +118,10 @@ meta_plugin_unminimize_completed (MetaPlugin      *plugin,
 }

 void
-meta_plugin_maximize_completed (MetaPlugin      *plugin,
-                                MetaWindowActor *actor)
+meta_plugin_size_change_completed (MetaPlugin      *plugin,
+                                   MetaWindowActor *actor)
 {
-  meta_plugin_window_effect_completed (plugin, actor, META_PLUGIN_MAXIMIZE);
-}
-
-void
-meta_plugin_unmaximize_completed (MetaPlugin      *plugin,
-                                  MetaWindowActor *actor)
-{
-  meta_plugin_window_effect_completed (plugin, actor, META_PLUGIN_UNMAXIMIZE);
+  meta_plugin_window_effect_completed (plugin, actor, META_PLUGIN_SIZE_CHANGE);
 }

 void
--- a/src/compositor/meta-shadow-factory-private.h
+++ b/src/compositor/meta-shadow-factory-private.h
@@ -1,66 +0,0 @@
-/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
-/*
- * MetaShadowFactory:
- *
- * Create and cache shadow textures for arbitrary window shapes
- *
- * Copyright (C) 2010 Red Hat, Inc.
- *
- * 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/>.
- */
-
-#ifndef __META_SHADOW_FACTORY_PRIVATE_H__
-#define __META_SHADOW_FACTORY_PRIVATE_H__
-
-#include <cairo.h>
-#include <clutter/clutter.h>
-#include "meta-window-shape.h"
-#include <meta/meta-shadow-factory.h>
-
-/**
- * MetaShadow:
- * #MetaShadow holds a shadow texture along with information about how to
- * apply that texture to draw a window texture. (E.g., it knows how big the
- * unscaled borders are on each side of the shadow texture.)
- */
-typedef struct _MetaShadow MetaShadow;
-
-MetaShadow *meta_shadow_ref         (MetaShadow            *shadow);
-void        meta_shadow_unref       (MetaShadow            *shadow);
-CoglTexture*meta_shadow_get_texture (MetaShadow            *shadow);
-void        meta_shadow_paint       (MetaShadow            *shadow,
-                                     int                    window_x,
-                                     int                    window_y,
-                                     int                    window_width,
-                                     int                    window_height,
-                                     guint8                 opacity,
-                                     cairo_region_t        *clip,
-                                     gboolean               clip_strictly);
-void        meta_shadow_get_bounds  (MetaShadow            *shadow,
-                                     int                    window_x,
-                                     int                    window_y,
-                                     int                    window_width,
-                                     int                    window_height,
-                                     cairo_rectangle_int_t *bounds);
-
-MetaShadowFactory *meta_shadow_factory_new (void);
-
-MetaShadow *meta_shadow_factory_get_shadow (MetaShadowFactory *factory,
-                                            MetaWindowShape   *shape,
-                                            int                width,
-                                            int                height,
-                                            const char        *class_name,
-                                            gboolean           focused);
-
-#endif /* __META_SHADOW_FACTORY_PRIVATE_H__ */
--- a/src/compositor/meta-shadow-factory.c
+++ b/src/compositor/meta-shadow-factory.c
@@ -26,8 +26,9 @@
 #include <math.h>
 #include <string.h>

+#include <meta/meta-shadow-factory.h>
+
 #include "cogl-utils.h"
-#include "meta-shadow-factory-private.h"
 #include "region-utils.h"

 /* This file implements blurring the shape of a window to produce a
@@ -1048,3 +1049,6 @@ meta_shadow_factory_get_params (MetaShadowFactory *factory,
  if (params)
    *params = *stored_params;
 }
+
+G_DEFINE_BOXED_TYPE (MetaShadow, meta_shadow,
+                     meta_shadow_ref, meta_shadow_unref)
--- a/src/compositor/meta-shaped-texture-private.h
+++ b/src/compositor/meta-shaped-texture-private.h
@@ -32,6 +32,9 @@
 ClutterActor *meta_shaped_texture_new (void);
 void meta_shaped_texture_set_texture (MetaShapedTexture *stex,
                                      CoglTexture       *texture);
+void meta_shaped_texture_set_fallback_size (MetaShapedTexture *stex,
+                                            guint              fallback_width,
+                                            guint              fallback_height);
 gboolean meta_shaped_texture_is_obscured (MetaShapedTexture *self);

 #endif
--- a/src/compositor/meta-shaped-texture.c
+++ b/src/compositor/meta-shaped-texture.c
@@ -86,6 +86,7 @@ struct _MetaShapedTexturePrivate
  cairo_region_t *unobscured_region;

  guint tex_width, tex_height;
+  guint fallback_width, fallback_height;

  guint create_mipmaps : 1;
 };
@@ -136,7 +137,20 @@ set_unobscured_region (MetaShapedTexture *self,
  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 };
+      guint width, height;
+
+      if (priv->texture)
+        {
+          width = priv->tex_width;
+          height = priv->tex_height;
+        }
+      else
+        {
+          width = priv->fallback_width;
+          height = priv->fallback_height;
+        }
+
+      cairo_rectangle_int_t bounds = { 0, 0, width, height };
      priv->unobscured_region = cairo_region_copy (unobscured_region);
      cairo_region_intersect_rectangle (priv->unobscured_region, &bounds);
    }
@@ -173,10 +187,25 @@ meta_shaped_texture_dispose (GObject *object)
  G_OBJECT_CLASS (meta_shaped_texture_parent_class)->dispose (object);
 }

+static CoglPipeline *
+get_base_pipeline (CoglContext *ctx)
+{
+  static CoglPipeline *template = NULL;
+  if (G_UNLIKELY (template == NULL))
+    {
+      template = cogl_pipeline_new (ctx);
+      cogl_pipeline_set_layer_wrap_mode_s (template, 0, COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE);
+      cogl_pipeline_set_layer_wrap_mode_t (template, 0, COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE);
+      cogl_pipeline_set_layer_wrap_mode_s (template, 1, COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE);
+      cogl_pipeline_set_layer_wrap_mode_t (template, 1, COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE);
+    }
+  return template;
+}
+
 static CoglPipeline *
 get_unmasked_pipeline (CoglContext *ctx)
 {
-  return cogl_pipeline_new (ctx);
+  return get_base_pipeline (ctx);
 }

 static CoglPipeline *
@@ -185,13 +214,13 @@ get_masked_pipeline (CoglContext *ctx)
  static CoglPipeline *template = NULL;
  if (G_UNLIKELY (template == NULL))
    {
-      template = cogl_pipeline_new (ctx);
+      template = cogl_pipeline_copy (get_base_pipeline (ctx));
      cogl_pipeline_set_layer_combine (template, 1,
                                       "RGBA = MODULATE (PREVIOUS, TEXTURE[A])",
                                       NULL);
    }

-  return cogl_pipeline_copy (template);
+  return template;
 }

 static CoglPipeline *
@@ -201,7 +230,7 @@ get_unblended_pipeline (CoglContext *ctx)
  if (G_UNLIKELY (template == NULL))
    {
      CoglColor color;
-      template = cogl_pipeline_new (ctx);
+      template = cogl_pipeline_copy (get_base_pipeline (ctx));
      cogl_color_init_from_4ub (&color, 255, 255, 255, 255);
      cogl_pipeline_set_blend (template,
                               "RGBA = ADD (SRC_COLOR, 0)",
@@ -209,7 +238,7 @@ get_unblended_pipeline (CoglContext *ctx)
      cogl_pipeline_set_color (template, &color);
    }

-  return cogl_pipeline_copy (template);
+  return template;
 }

 static void
@@ -420,8 +449,6 @@ meta_shaped_texture_paint (ClutterActor *actor)
              cairo_region_get_rectangle (region, i, &rect);
              paint_clipped_rectangle (fb, opaque_pipeline, &rect, &alloc);
            }
-
-          cogl_object_unref (opaque_pipeline);
        }

      cairo_region_destroy (region);
@@ -484,8 +511,6 @@ meta_shaped_texture_paint (ClutterActor *actor)
                                           alloc.x2 - alloc.x1,
                                           alloc.y2 - alloc.y1);
        }
-
-      cogl_object_unref (blended_pipeline);
    }

  if (blended_region != NULL)
@@ -498,17 +523,18 @@ meta_shaped_texture_get_preferred_width (ClutterActor *self,
                                         gfloat       *min_width_p,
                                         gfloat       *natural_width_p)
 {
-  MetaShapedTexturePrivate *priv;
+  MetaShapedTexturePrivate *priv = META_SHAPED_TEXTURE (self)->priv;
+  guint width;

-  g_return_if_fail (META_IS_SHAPED_TEXTURE (self));
-
-  priv = META_SHAPED_TEXTURE (self)->priv;
+  if (priv->texture)
+    width = priv->tex_width;
+  else
+    width = priv->fallback_width;

  if (min_width_p)
-    *min_width_p = priv->tex_width;
-
+    *min_width_p = width;
  if (natural_width_p)
-    *natural_width_p = priv->tex_width;
+    *natural_width_p = width;
 }

 static void
@@ -517,17 +543,18 @@ meta_shaped_texture_get_preferred_height (ClutterActor *self,
                                          gfloat       *min_height_p,
                                          gfloat       *natural_height_p)
 {
-  MetaShapedTexturePrivate *priv;
+  MetaShapedTexturePrivate *priv = META_SHAPED_TEXTURE (self)->priv;
+  guint height;

-  g_return_if_fail (META_IS_SHAPED_TEXTURE (self));
-
-  priv = META_SHAPED_TEXTURE (self)->priv;
+  if (priv->texture)
+    height = priv->tex_height;
+  else
+    height = priv->fallback_height;

  if (min_height_p)
-    *min_height_p = priv->tex_height;
-
+    *min_height_p = height;
  if (natural_height_p)
-    *natural_height_p = priv->tex_height;
+    *natural_height_p = height;
 }

 static cairo_region_t *
@@ -860,6 +887,17 @@ meta_shaped_texture_get_image (MetaShapedTexture     *stex,
  return surface;
 }

+void
+meta_shaped_texture_set_fallback_size (MetaShapedTexture *self,
+                                       guint              fallback_width,
+                                       guint              fallback_height)
+{
+  MetaShapedTexturePrivate *priv = self->priv;
+
+  priv->fallback_width = fallback_width;
+  priv->fallback_height = fallback_height;
+}
+
 static void
 meta_shaped_texture_cull_out (MetaCullable   *cullable,
                              cairo_region_t *unobscured_region,
--- a/src/compositor/meta-surface-actor-wayland.c
+++ b/src/compositor/meta-surface-actor-wayland.c
@@ -26,10 +26,13 @@

 #include "meta-surface-actor-wayland.h"

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

+#include "wayland/meta-wayland-buffer.h"
 #include "wayland/meta-wayland-private.h"
+#include "wayland/meta-window-wayland.h"

 #include "compositor/region-utils.h"

@@ -80,53 +83,89 @@ meta_surface_actor_wayland_is_unredirected (MetaSurfaceActor *actor)
  return FALSE;
 }

-static int
-get_output_scale (int winsys_id)
-{
-  MetaMonitorManager *monitor_manager = meta_monitor_manager_get ();
-  MetaOutput *outputs;
-  guint n_outputs, i;
-  int output_scale = 1;
-
-  outputs = meta_monitor_manager_get_outputs (monitor_manager, &n_outputs);
-
-  for (i = 0; i < n_outputs; i++)
-    {
-      if (outputs[i].winsys_id == winsys_id)
-        {
-          output_scale = outputs[i].scale;
-          break;
-        }
-    }
-
-  return output_scale;
-}
-
 double
 meta_surface_actor_wayland_get_scale (MetaSurfaceActorWayland *actor)
 {
   MetaSurfaceActorWaylandPrivate *priv = meta_surface_actor_wayland_get_instance_private (actor);
   MetaWaylandSurface *surface = priv->surface;
-   MetaWindow *window = surface->window;
+   MetaWindow *window;
   int output_scale = 1;

-   while (surface)
-    {
-      if (surface->window)
-        {
-          window = surface->window;
-          break;
-        }
-      surface = surface->sub.parent;
-    }
+   if (!surface)
+     return 1;
+
+   window = meta_wayland_surface_get_toplevel_window (surface);

   /* XXX: We do not handle x11 clients yet */
   if (window && window->client_type != META_WINDOW_CLIENT_TYPE_X11)
-     output_scale = get_output_scale (window->monitor->winsys_id);
+     output_scale = meta_window_wayland_get_main_monitor_scale (window);

   return (double)output_scale / (double)priv->surface->scale;
 }

+static void
+logical_to_actor_position (MetaSurfaceActorWayland *self,
+                           int                     *x,
+                           int                     *y)
+{
+  MetaWaylandSurface *surface = meta_surface_actor_wayland_get_surface (self);
+  MetaWindow *toplevel_window;
+  int monitor_scale = 1;
+
+  toplevel_window = meta_wayland_surface_get_toplevel_window (surface);
+  if (toplevel_window)
+    monitor_scale = meta_window_wayland_get_main_monitor_scale (toplevel_window);
+
+  *x = *x * monitor_scale;
+  *y = *y * monitor_scale;
+}
+
+/* Convert the current actor state to the corresponding subsurface rectangle
+ * in logical pixel coordinate space. */
+void
+meta_surface_actor_wayland_get_subsurface_rect (MetaSurfaceActorWayland *self,
+                                                MetaRectangle           *rect)
+{
+  MetaWaylandSurface *surface = meta_surface_actor_wayland_get_surface (self);
+  CoglTexture *texture = surface->buffer->texture;
+  MetaWindow *toplevel_window;
+  int monitor_scale;
+  float x, y;
+
+  toplevel_window = meta_wayland_surface_get_toplevel_window (surface);
+  monitor_scale = meta_window_wayland_get_main_monitor_scale (toplevel_window);
+
+  clutter_actor_get_position (CLUTTER_ACTOR (self), &x, &y);
+  *rect = (MetaRectangle) {
+    .x = x / monitor_scale,
+    .y = y / monitor_scale,
+    .width = cogl_texture_get_width (texture) / surface->scale,
+    .height = cogl_texture_get_height (texture) / surface->scale,
+  };
+}
+
+void
+meta_surface_actor_wayland_sync_subsurface_state (MetaSurfaceActorWayland *self)
+{
+  MetaWaylandSurface *surface = meta_surface_actor_wayland_get_surface (self);
+  MetaWindow *window;
+  int x = surface->offset_x + surface->sub.x;
+  int y = surface->offset_y + surface->sub.y;
+
+  window = meta_wayland_surface_get_toplevel_window (surface);
+  if (window && window->client_type == META_WINDOW_CLIENT_TYPE_X11)
+    {
+      /* Bail directly if this is part of a Xwayland window and warn
+       * if there happen to be offsets anyway since that is not supposed
+       * to happen. */
+      g_warn_if_fail (x == 0 && y == 0);
+      return;
+    }
+
+  logical_to_actor_position (self, &x, &y);
+  clutter_actor_set_position (CLUTTER_ACTOR (self), x, y);
+}
+
 void
 meta_surface_actor_wayland_sync_state (MetaSurfaceActorWayland *self)
 {
@@ -173,25 +212,65 @@ meta_surface_actor_wayland_sync_state (MetaSurfaceActorWayland *self)
                                            scaled_opaque_region);
      cairo_region_destroy (scaled_opaque_region);
    }
+
+  meta_surface_actor_wayland_sync_subsurface_state (self);
 }

 void
 meta_surface_actor_wayland_sync_state_recursive (MetaSurfaceActorWayland *self)
 {
  MetaWaylandSurface *surface = meta_surface_actor_wayland_get_surface (self);
+  MetaWindow *window = meta_wayland_surface_get_toplevel_window (surface);
  GList *iter;

  meta_surface_actor_wayland_sync_state (self);

-  for (iter = surface->subsurfaces; iter != NULL; iter = iter->next)
+  if (window && window->client_type != META_WINDOW_CLIENT_TYPE_X11)
    {
-      MetaWaylandSurface *subsurf = iter->data;
+      for (iter = surface->subsurfaces; iter != NULL; iter = iter->next)
+        {
+          MetaWaylandSurface *subsurf = iter->data;

-      meta_surface_actor_wayland_sync_state_recursive (
-        META_SURFACE_ACTOR_WAYLAND (subsurf->surface_actor));
+          meta_surface_actor_wayland_sync_state_recursive (
+            META_SURFACE_ACTOR_WAYLAND (subsurf->surface_actor));
+        }
    }
 }

+gboolean
+meta_surface_actor_wayland_is_on_monitor (MetaSurfaceActorWayland *self,
+                                          MetaMonitorInfo         *monitor)
+{
+  float x, y, width, height;
+  cairo_rectangle_int_t actor_rect;
+  cairo_region_t *region;
+  gboolean is_on_monitor;
+
+  clutter_actor_get_transformed_position (CLUTTER_ACTOR (self), &x, &y);
+  clutter_actor_get_transformed_size (CLUTTER_ACTOR (self), &width, &height);
+
+  actor_rect.x = (int)roundf (x);
+  actor_rect.y = (int)roundf (y);
+  actor_rect.width = (int)roundf (x + width) - actor_rect.x;
+  actor_rect.height = (int)roundf (y + height) - actor_rect.y;
+
+  /* Calculate the scaled surface actor region. */
+  region = cairo_region_create_rectangle (&actor_rect);
+
+  cairo_region_intersect_rectangle (region,
+				    &((cairo_rectangle_int_t) {
+				      .x = monitor->rect.x,
+				      .y = monitor->rect.y,
+				      .width = monitor->rect.width,
+				      .height = monitor->rect.height,
+				    }));
+
+  is_on_monitor = !cairo_region_is_empty (region);
+  cairo_region_destroy (region);
+
+  return is_on_monitor;
+}
+
 static MetaWindow *
 meta_surface_actor_wayland_get_window (MetaSurfaceActor *actor)
 {
@@ -236,6 +315,19 @@ meta_surface_actor_wayland_get_preferred_height  (ClutterActor *self,
    *natural_height_p *= scale;
 }

+static void
+meta_surface_actor_wayland_paint (ClutterActor *actor)
+{
+  MetaSurfaceActorWayland *self = META_SURFACE_ACTOR_WAYLAND (actor);
+  MetaSurfaceActorWaylandPrivate *priv =
+    meta_surface_actor_wayland_get_instance_private (self);
+
+  if (priv->surface)
+    meta_wayland_surface_update_outputs (priv->surface);
+
+  CLUTTER_ACTOR_CLASS (meta_surface_actor_wayland_parent_class)->paint (actor);
+}
+
 static void
 meta_surface_actor_wayland_dispose (GObject *object)
 {
@@ -255,6 +347,7 @@ meta_surface_actor_wayland_class_init (MetaSurfaceActorWaylandClass *klass)

  actor_class->get_preferred_width = meta_surface_actor_wayland_get_preferred_width;
  actor_class->get_preferred_height = meta_surface_actor_wayland_get_preferred_height;
+  actor_class->paint = meta_surface_actor_wayland_paint;

  surface_actor_class->process_damage = meta_surface_actor_wayland_process_damage;
  surface_actor_class->pre_paint = meta_surface_actor_wayland_pre_paint;
@@ -301,3 +394,12 @@ meta_surface_actor_wayland_get_surface (MetaSurfaceActorWayland *self)
  MetaSurfaceActorWaylandPrivate *priv = meta_surface_actor_wayland_get_instance_private (self);
  return priv->surface;
 }
+
+void
+meta_surface_actor_wayland_surface_destroyed (MetaSurfaceActorWayland *self)
+{
+  MetaSurfaceActorWaylandPrivate *priv =
+    meta_surface_actor_wayland_get_instance_private (self);
+
+  priv->surface = NULL;
+}
--- a/src/compositor/meta-surface-actor-wayland.h
+++ b/src/compositor/meta-surface-actor-wayland.h
@@ -31,6 +31,8 @@

 #include "wayland/meta-wayland.h"

+#include "backends/meta-monitor-manager-private.h"
+
 G_BEGIN_DECLS

 #define META_TYPE_SURFACE_ACTOR_WAYLAND            (meta_surface_actor_wayland_get_type ())
@@ -57,16 +59,25 @@ 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_surface_destroyed (MetaSurfaceActorWayland *self);

 void meta_surface_actor_wayland_set_texture (MetaSurfaceActorWayland *self,
                                             CoglTexture *texture);

 double meta_surface_actor_wayland_get_scale (MetaSurfaceActorWayland *actor);

+void meta_surface_actor_wayland_get_subsurface_rect (MetaSurfaceActorWayland *self,
+                                                     MetaRectangle           *rect);
+
 void meta_surface_actor_wayland_sync_state (MetaSurfaceActorWayland *self);

 void meta_surface_actor_wayland_sync_state_recursive (MetaSurfaceActorWayland *self);

+void meta_surface_actor_wayland_sync_subsurface_state (MetaSurfaceActorWayland *self);
+
+gboolean meta_surface_actor_wayland_is_on_monitor (MetaSurfaceActorWayland *self,
+                                                   MetaMonitorInfo         *monitor);
+
 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
@@ -416,6 +416,7 @@ meta_surface_actor_x11_set_size (MetaSurfaceActorX11 *self,
                                 int width, int height)
 {
  MetaSurfaceActorX11Private *priv = meta_surface_actor_x11_get_instance_private (self);
+  MetaShapedTexture *stex = meta_surface_actor_get_texture (META_SURFACE_ACTOR (self));

  if (priv->last_width == width &&
      priv->last_height == height)
@@ -424,4 +425,5 @@ meta_surface_actor_x11_set_size (MetaSurfaceActorX11 *self,
  priv->size_changed = TRUE;
  priv->last_width = width;
  priv->last_height = height;
+  meta_shaped_texture_set_fallback_size (stex, width, height);
 }
--- a/src/compositor/meta-window-actor-private.h
+++ b/src/compositor/meta-window-actor-private.h
@@ -8,6 +8,7 @@
 #include <X11/extensions/Xdamage.h>
 #include <meta/compositor-mutter.h>
 #include "meta-surface-actor.h"
+#include "meta-plugin-manager.h"

 MetaWindowActor *meta_window_actor_new (MetaWindow *window);

@@ -18,12 +19,10 @@ void meta_window_actor_show (MetaWindowActor *self,
 void meta_window_actor_hide (MetaWindowActor *self,
                             MetaCompEffect   effect);

-void meta_window_actor_maximize   (MetaWindowActor *self,
-                                   MetaRectangle   *old_rect,
-                                   MetaRectangle   *new_rect);
-void meta_window_actor_unmaximize (MetaWindowActor *self,
-                                   MetaRectangle   *old_rect,
-                                   MetaRectangle   *new_rect);
+void meta_window_actor_size_change   (MetaWindowActor *self,
+                                      MetaSizeChange   which_change,
+                                      MetaRectangle   *old_frame_rect,
+                                      MetaRectangle   *old_buffer_rect);

 void meta_window_actor_process_x11_damage (MetaWindowActor    *self,
                                           XDamageNotifyEvent *event);
@@ -55,8 +54,8 @@ void     meta_window_actor_sync_updates_frozen (MetaWindowActor *self);
 void     meta_window_actor_queue_frame_drawn   (MetaWindowActor *self,
                                                gboolean         no_delay_frame);

-void meta_window_actor_effect_completed (MetaWindowActor *actor,
-                                         gulong           event);
+void meta_window_actor_effect_completed (MetaWindowActor  *actor,
+                                         MetaPluginEffect  event);

 MetaSurfaceActor *meta_window_actor_get_surface (MetaWindowActor *self);
 void meta_window_actor_update_surface (MetaWindowActor *self);
--- a/src/compositor/meta-window-actor.c
+++ b/src/compositor/meta-window-actor.c
@@ -20,10 +20,11 @@
 #include "frame.h"
 #include <meta/window.h>
 #include <meta/meta-shaped-texture.h>
+#include <meta/meta-enum-types.h>
+#include <meta/meta-shadow-factory.h>

 #include "compositor-private.h"
 #include "meta-shaped-texture-private.h"
-#include "meta-shadow-factory-private.h"
 #include "meta-window-actor-private.h"
 #include "meta-texture-rectangle.h"
 #include "region-utils.h"
@@ -74,6 +75,8 @@ struct _MetaWindowActorPrivate
  MetaWindowShape  *shadow_shape;
  char *            shadow_class;

+  MetaShadowMode    shadow_mode;
+
  guint             send_frame_messages_timer;
  gint64            frame_drawn_time;

@@ -87,8 +90,7 @@ struct _MetaWindowActorPrivate
   */
  gint              minimize_in_progress;
  gint              unminimize_in_progress;
-  gint              maximize_in_progress;
-  gint              unmaximize_in_progress;
+  gint              size_change_in_progress;
  gint              map_in_progress;
  gint              destroy_in_progress;

@@ -110,8 +112,6 @@ struct _MetaWindowActorPrivate

  guint		    needs_destroy	   : 1;

-  guint             no_shadow              : 1;
-
  guint             updates_frozen         : 1;
  guint             first_frame_state      : 2; /* FirstFrameState */
 };
@@ -147,7 +147,7 @@ static guint signals[LAST_SIGNAL] = { 0 };
 enum
 {
  PROP_META_WINDOW = 1,
-  PROP_NO_SHADOW,
+  PROP_SHADOW_MODE,
  PROP_SHADOW_CLASS
 };

@@ -245,14 +245,15 @@ meta_window_actor_class_init (MetaWindowActorClass *klass)
                                   PROP_META_WINDOW,
                                   pspec);

-  pspec = g_param_spec_boolean ("no-shadow",
-                                "No shadow",
-                                "Do not add shaddow to this window",
-                                FALSE,
-                                G_PARAM_READWRITE);
+  pspec = g_param_spec_enum ("shadow-mode",
+                             "Shadow mode",
+                             "Decides when to paint shadows",
+                             META_TYPE_SHADOW_MODE,
+                             META_SHADOW_MODE_AUTO,
+                             G_PARAM_READWRITE);

  g_object_class_install_property (object_class,
-                                   PROP_NO_SHADOW,
+                                   PROP_SHADOW_MODE,
                                   pspec);

  pspec = g_param_spec_string ("shadow-class",
@@ -510,14 +511,14 @@ meta_window_actor_set_property (GObject      *object,
      g_signal_connect_object (priv->window, "notify::appears-focused",
                               G_CALLBACK (window_appears_focused_notify), self, 0);
      break;
-    case PROP_NO_SHADOW:
+    case PROP_SHADOW_MODE:
      {
-        gboolean newv = g_value_get_boolean (value);
+        MetaShadowMode newv = g_value_get_enum (value);

-        if (newv == priv->no_shadow)
+        if (newv == priv->shadow_mode)
          return;

-        priv->no_shadow = newv;
+        priv->shadow_mode = newv;

        meta_window_actor_invalidate_shadow (self);
      }
@@ -554,8 +555,8 @@ meta_window_actor_get_property (GObject      *object,
    case PROP_META_WINDOW:
      g_value_set_object (value, priv->window);
      break;
-    case PROP_NO_SHADOW:
-      g_value_set_boolean (value, priv->no_shadow);
+    case PROP_SHADOW_MODE:
+      g_value_set_enum (value, priv->shadow_mode);
      break;
    case PROP_SHADOW_CLASS:
      g_value_set_string (value, priv->shadow_class);
@@ -615,8 +616,10 @@ meta_window_actor_get_shape_bounds (MetaWindowActor       *self,
 #ifdef HAVE_WAYLAND
  if (META_IS_SURFACE_ACTOR_WAYLAND (priv->surface))
    {
-      double scale = priv->surface ?
-                     meta_surface_actor_wayland_get_scale (META_SURFACE_ACTOR_WAYLAND (priv->surface)) : 1.;
+      MetaSurfaceActorWayland *surface_actor =
+        META_SURFACE_ACTOR_WAYLAND (priv->surface);
+      double scale = meta_surface_actor_wayland_get_scale (surface_actor);
+
      bounds->x *= scale;
      bounds->y *= scale;
      bounds->width *= scale;
@@ -802,8 +805,10 @@ meta_window_actor_has_shadow (MetaWindowActor *self)
 {
  MetaWindowActorPrivate *priv = self->priv;

-  if (priv->no_shadow)
+  if (priv->shadow_mode == META_SHADOW_MODE_FORCED_OFF)
    return FALSE;
+  if (priv->shadow_mode == META_SHADOW_MODE_FORCED_ON)
+    return TRUE;

  /* Leaving out shadows for maximized and fullscreen windows is an effeciency
   * win and also prevents the unsightly effect of the shadow of maximized
@@ -1036,20 +1041,18 @@ gboolean
 meta_window_actor_effect_in_progress (MetaWindowActor *self)
 {
  return (self->priv->minimize_in_progress ||
-	  self->priv->maximize_in_progress ||
-	  self->priv->unmaximize_in_progress ||
+	  self->priv->size_change_in_progress ||
 	  self->priv->map_in_progress ||
 	  self->priv->destroy_in_progress);
 }

 static gboolean
-is_freeze_thaw_effect (gulong event)
+is_freeze_thaw_effect (MetaPluginEffect event)
 {
  switch (event)
  {
  case META_PLUGIN_DESTROY:
-  case META_PLUGIN_MAXIMIZE:
-  case META_PLUGIN_UNMAXIMIZE:
+  case META_PLUGIN_SIZE_CHANGE:
    return TRUE;
    break;
  default:
@@ -1058,8 +1061,8 @@ is_freeze_thaw_effect (gulong event)
 }

 static gboolean
-start_simple_effect (MetaWindowActor *self,
-                     gulong        event)
+start_simple_effect (MetaWindowActor  *self,
+                     MetaPluginEffect  event)
 {
  MetaWindowActorPrivate *priv = self->priv;
  MetaCompositor *compositor = priv->compositor;
@@ -1068,6 +1071,8 @@ start_simple_effect (MetaWindowActor *self,

  switch (event)
  {
+  case META_PLUGIN_NONE:
+    return FALSE;
  case META_PLUGIN_MINIMIZE:
    counter = &priv->minimize_in_progress;
    break;
@@ -1080,8 +1085,7 @@ start_simple_effect (MetaWindowActor *self,
  case META_PLUGIN_DESTROY:
    counter = &priv->destroy_in_progress;
    break;
-  case META_PLUGIN_UNMAXIMIZE:
-  case META_PLUGIN_MAXIMIZE:
+  case META_PLUGIN_SIZE_CHANGE:
  case META_PLUGIN_SWITCH_WORKSPACE:
    g_assert_not_reached ();
    break;
@@ -1123,8 +1127,8 @@ meta_window_actor_after_effects (MetaWindowActor *self)
 }

 void
-meta_window_actor_effect_completed (MetaWindowActor *self,
-                                    gulong           event)
+meta_window_actor_effect_completed (MetaWindowActor  *self,
+                                    MetaPluginEffect  event)
 {
  MetaWindowActorPrivate *priv   = self->priv;

@@ -1134,6 +1138,8 @@ meta_window_actor_effect_completed (MetaWindowActor *self,

  switch (event)
  {
+  case META_PLUGIN_NONE:
+    break;
  case META_PLUGIN_MINIMIZE:
    {
      priv->minimize_in_progress--;
@@ -1176,20 +1182,12 @@ meta_window_actor_effect_completed (MetaWindowActor *self,
 	priv->destroy_in_progress = 0;
      }
    break;
-  case META_PLUGIN_UNMAXIMIZE:
-    priv->unmaximize_in_progress--;
-    if (priv->unmaximize_in_progress < 0)
+  case META_PLUGIN_SIZE_CHANGE:
+    priv->size_change_in_progress--;
+    if (priv->size_change_in_progress < 0)
      {
-	g_warning ("Error in unmaximize accounting.");
-	priv->unmaximize_in_progress = 0;
-      }
-    break;
-  case META_PLUGIN_MAXIMIZE:
-    priv->maximize_in_progress--;
-    if (priv->maximize_in_progress < 0)
-      {
-	g_warning ("Error in maximize accounting.");
-	priv->maximize_in_progress = 0;
+	g_warning ("Error in size change accounting.");
+	priv->size_change_in_progress = 0;
      }
    break;
  case META_PLUGIN_SWITCH_WORKSPACE:
@@ -1300,7 +1298,7 @@ meta_window_actor_show (MetaWindowActor   *self,
 {
  MetaWindowActorPrivate *priv = self->priv;
  MetaCompositor *compositor = priv->compositor;
-  gulong event = 0;
+  MetaPluginEffect event;

  g_return_if_fail (!priv->visible);

@@ -1315,14 +1313,13 @@ meta_window_actor_show (MetaWindowActor   *self,
      event = META_PLUGIN_UNMINIMIZE;
      break;
    case META_COMP_EFFECT_NONE:
+      event = META_PLUGIN_NONE;
      break;
-    case META_COMP_EFFECT_DESTROY:
-    case META_COMP_EFFECT_MINIMIZE:
+    default:
      g_assert_not_reached();
    }

  if (compositor->switch_workspace_in_progress ||
-      event == 0 ||
      !start_simple_effect (self, event))
    {
      clutter_actor_show (CLUTTER_ACTOR (self));
@@ -1335,7 +1332,7 @@ meta_window_actor_hide (MetaWindowActor *self,
 {
  MetaWindowActorPrivate *priv = self->priv;
  MetaCompositor *compositor = priv->compositor;
-  gulong event = 0;
+  MetaPluginEffect event;

  g_return_if_fail (priv->visible);

@@ -1357,70 +1354,32 @@ meta_window_actor_hide (MetaWindowActor *self,
      event = META_PLUGIN_MINIMIZE;
      break;
    case META_COMP_EFFECT_NONE:
+      event = META_PLUGIN_NONE;
      break;
-    case META_COMP_EFFECT_UNMINIMIZE:
-    case META_COMP_EFFECT_CREATE:
+    default:
      g_assert_not_reached();
    }

-  if (event == 0 ||
-      !start_simple_effect (self, event))
+  if (!start_simple_effect (self, event))
    clutter_actor_hide (CLUTTER_ACTOR (self));
 }

 void
-meta_window_actor_maximize (MetaWindowActor    *self,
-                            MetaRectangle      *old_rect,
-                            MetaRectangle      *new_rect)
+meta_window_actor_size_change (MetaWindowActor    *self,
+                               MetaSizeChange      which_change,
+                               MetaRectangle      *old_frame_rect,
+                               MetaRectangle      *old_buffer_rect)
 {
  MetaWindowActorPrivate *priv = self->priv;
  MetaCompositor *compositor = priv->compositor;

-  /* The window has already been resized (in order to compute new_rect),
-   * which by side effect caused the actor to be resized. Restore it to the
-   * old size and position */
-  clutter_actor_set_position (CLUTTER_ACTOR (self), old_rect->x, old_rect->y);
-  clutter_actor_set_size (CLUTTER_ACTOR (self), old_rect->width, old_rect->height);
-
-  self->priv->maximize_in_progress++;
+  self->priv->size_change_in_progress++;
  meta_window_actor_freeze (self);

-  if (!meta_plugin_manager_event_maximize (compositor->plugin_mgr,
-                                           self,
-                                           META_PLUGIN_MAXIMIZE,
-                                           new_rect->x, new_rect->y,
-                                           new_rect->width, new_rect->height))
-
+  if (!meta_plugin_manager_event_size_change (compositor->plugin_mgr, self,
+                                              which_change, old_frame_rect, old_buffer_rect))
    {
-      self->priv->maximize_in_progress--;
-      meta_window_actor_thaw (self);
-    }
-}
-
-void
-meta_window_actor_unmaximize (MetaWindowActor   *self,
-                              MetaRectangle     *old_rect,
-                              MetaRectangle     *new_rect)
-{
-  MetaWindowActorPrivate *priv = self->priv;
-  MetaCompositor *compositor = priv->compositor;
-
-  /* The window has already been resized (in order to compute new_rect),
-   * which by side effect caused the actor to be resized. Restore it to the
-   * old size and position */
-  clutter_actor_set_position (CLUTTER_ACTOR (self), old_rect->x, old_rect->y);
-  clutter_actor_set_size (CLUTTER_ACTOR (self), old_rect->width, old_rect->height);
-
-  self->priv->unmaximize_in_progress++;
-  meta_window_actor_freeze (self);
-
-  if (!meta_plugin_manager_event_maximize (compositor->plugin_mgr,
-                                           self,
-                                           META_PLUGIN_UNMAXIMIZE,
-                                           new_rect->x, new_rect->y,
-                                           new_rect->width, new_rect->height))
-    {
-      self->priv->unmaximize_in_progress--;
+      self->priv->size_change_in_progress--;
      meta_window_actor_thaw (self);
    }
 }
--- a/src/compositor/meta-window-group.c
+++ b/src/compositor/meta-window-group.c
@@ -58,9 +58,7 @@ meta_window_group_paint (ClutterActor *actor)
  cairo_region_t *clip_region;
  cairo_region_t *unobscured_region;
  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 screen_width, screen_height;

  MetaWindowGroup *window_group = META_WINDOW_GROUP (actor);
@@ -82,7 +80,7 @@ meta_window_group_paint (ClutterActor *actor)
   * on the stage.
   */
  if (!meta_actor_painting_untransformed (screen_width, screen_height, &paint_x_origin, &paint_y_origin) ||
-      !meta_actor_is_untransformed (actor, &actor_x_origin, &actor_y_origin))
+      !meta_actor_is_untransformed (actor, NULL, NULL))
    {
      CLUTTER_ACTOR_CLASS (meta_window_group_parent_class)->paint (actor);
      return;
@@ -105,9 +103,7 @@ meta_window_group_paint (ClutterActor *actor)

  clip_region = cairo_region_create_rectangle (&clip_rect);

-  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);
+  cairo_region_translate (clip_region, -paint_x_origin, -paint_y_origin);

  meta_cullable_cull_out (META_CULLABLE (window_group), unobscured_region, clip_region);

@@ -145,6 +141,36 @@ meta_window_group_get_paint_volume (ClutterActor       *self,
  return TRUE;
 }

+/* This is a workaround for Clutter's awful allocation tracking.
+ * Without this, any time the window group changed size, which is
+ * any time windows are dragged around, we'll do a full repaint
+ * of the window group, which includes the background actor, meaning
+ * a full-stage repaint.
+ *
+ * Since actors are allowed to paint outside their allocation, and
+ * since child actors are allowed to be outside their parents, this
+ * doesn't affect anything, but it means that we'll get much more
+ * sane and consistent clipped repaints from Clutter. */
+static void
+meta_window_group_get_preferred_width (ClutterActor *actor,
+                                       gfloat        for_height,
+                                       gfloat       *min_width,
+                                       gfloat       *nat_width)
+{
+  *min_width = 0;
+  *nat_width = 0;
+}
+
+static void
+meta_window_group_get_preferred_height (ClutterActor *actor,
+                                        gfloat        for_width,
+                                        gfloat       *min_height,
+                                        gfloat       *nat_height)
+{
+  *min_height = 0;
+  *nat_height = 0;
+}
+
 static void
 meta_window_group_class_init (MetaWindowGroupClass *klass)
 {
@@ -152,6 +178,8 @@ meta_window_group_class_init (MetaWindowGroupClass *klass)

  actor_class->paint = meta_window_group_paint;
  actor_class->get_paint_volume = meta_window_group_get_paint_volume;
+  actor_class->get_preferred_width = meta_window_group_get_preferred_width;
+  actor_class->get_preferred_height = meta_window_group_get_preferred_height;
 }

 static void
--- a/src/compositor/meta-window-shape.c
+++ b/src/compositor/meta-window-shape.c
@@ -1,4 +1,5 @@
 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
 /*
 * MetaWindowShape
 *
@@ -19,9 +20,12 @@
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */
-#include <string.h>

-#include "meta-window-shape.h"
+#include "config.h"
+
+#include <meta/meta-window-shape.h>
+
+#include <string.h>
 #include "region-utils.h"

 struct _MetaWindowShape
@@ -250,3 +254,5 @@ meta_window_shape_to_region (MetaWindowShape *shape,
  return region;
 }

+G_DEFINE_BOXED_TYPE (MetaWindowShape, meta_window_shape,
+                     meta_window_shape_ref, meta_window_shape_unref)
--- a/src/compositor/plugins/default.c
+++ b/src/compositor/plugins/default.c
@@ -689,7 +689,7 @@ show_tile_preview (MetaPlugin    *plugin,
  ScreenTilePreview *preview = get_screen_tile_preview (screen);
  ClutterActor *window_actor;

-  if (CLUTTER_ACTOR_IS_VISIBLE (preview->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
--- a/src/core/core.c
+++ b/src/core/core.c
@@ -172,18 +172,6 @@ meta_core_toggle_maximize (Display *xdisplay,
    meta_window_maximize (window, META_MAXIMIZE_BOTH);
 }

-void
-meta_core_change_workspace (Display *xdisplay,
-                            Window   frame_xwindow,
-                            int      new_workspace)
-{
-  MetaWindow *window = get_window (xdisplay, frame_xwindow);
-
-  meta_window_change_workspace (window,
-                                meta_screen_get_workspace_by_index (window->screen,
-                                                                    new_workspace));
-}
-
 void
 meta_core_show_window_menu (Display            *xdisplay,
                            Window              frame_xwindow,
@@ -217,19 +205,6 @@ meta_core_show_window_menu_for_rect (Display            *xdisplay,
  meta_window_show_menu_for_rect (window, menu, rect);
 }

-const char*
-meta_core_get_workspace_name_with_index (Display *xdisplay,
-                                         Window   xroot,
-                                         int      index)
-{
-  MetaDisplay *display;
-  MetaWorkspace *workspace;
-
-  display = meta_display_for_x_display (xdisplay);
-  workspace = meta_screen_get_workspace_by_index (display->screen, index);
-  return workspace ? meta_workspace_get_name (workspace) : NULL;
-}
-
 gboolean
 meta_core_begin_grab_op (Display    *xdisplay,
                         Window      frame_xwindow,
--- a/src/core/core.h
+++ b/src/core/core.h
@@ -41,15 +41,6 @@ void meta_core_toggle_maximize_horizontally  (Display *xdisplay,
                                              Window   frame_xwindow);
 void meta_core_toggle_maximize_vertically    (Display *xdisplay,
                                              Window   frame_xwindow);
-void meta_core_change_workspace (Display *xdisplay,
-                                 Window   frame_xwindow,
-                                 int      new_workspace);
-
-int meta_core_get_frame_workspace (Display *xdisplay,
-                                   Window frame_xwindow);
-const char* meta_core_get_workspace_name_with_index (Display *xdisplay,
-                                                     Window xroot,
-                                                     int    index);

 void meta_core_show_window_menu (Display            *xdisplay,
                                 Window              frame_xwindow,
--- a/src/core/delete.c
+++ b/src/core/delete.c
@@ -160,12 +160,7 @@ void
 meta_window_set_alive (MetaWindow *window,
                       gboolean    is_alive)
 {
-  if (window->is_alive == is_alive)
-    return;
-
-  window->is_alive = is_alive;
-
-  if (window->is_alive)
+  if (is_alive)
    kill_delete_dialog (window);
  else
    show_delete_dialog (window, CurrentTime);
@@ -185,34 +180,6 @@ meta_window_delete (MetaWindow  *window,
  META_WINDOW_GET_CLASS (window)->delete (window, timestamp);

  meta_window_check_alive (window, timestamp);
-
-  if (window->has_focus)
-    {
-      /* FIXME Clean this up someday
-       * http://bugzilla.gnome.org/show_bug.cgi?id=108706
-       */
-#if 0
-      /* This is unfortunately going to result in weirdness
-       * if the window doesn't respond to the delete event.
-       * I don't know how to avoid that though.
-       */
-      meta_topic (META_DEBUG_FOCUS,
-                  "Focusing default window because focus window %s was deleted/killed\n",
-                  window->desc);
-      meta_workspace_focus_default_window (window->screen->active_workspace,
-                                           window);
-#else
-      meta_topic (META_DEBUG_FOCUS,
-                  "Not unfocusing %s on delete/kill\n",
-                  window->desc);
-#endif
-    }
-  else
-    {
-      meta_topic (META_DEBUG_FOCUS,
-                  "Window %s was deleted/killed but didn't have focus\n",
-                  window->desc);
-    }
 }

 void
--- a/src/core/display-private.h
+++ b/src/core/display-private.h
@@ -121,7 +121,7 @@ struct _MetaDisplay
   * class is constructed.
   */
 #define item(x)  Atom atom_##x;
-#include <meta/atomnames.h>
+#include <x11/atomnames.h>
 #undef item

  /* The window and serial of the most recent FocusIn event. */
@@ -217,9 +217,6 @@ struct _MetaDisplay
  guint       grab_have_pointer : 1;
  guint       grab_have_keyboard : 1;
  guint       grab_frame_action : 1;
-  /* During a resize operation, the directions in which we've broken
-   * out of the initial maximization state */
-  guint       grab_resize_unmaximize : 2; /* MetaMaximizeFlags */
  MetaRectangle grab_initial_window_pos;
  int         grab_initial_x, grab_initial_y;  /* These are only relevant for */
  gboolean    grab_threshold_movement_reached; /* raise_on_click == FALSE.    */
--- a/src/core/display.c
+++ b/src/core/display.c
@@ -46,12 +46,13 @@
 #include <meta/compositor.h>
 #include <meta/compositor-mutter.h>
 #include <X11/Xatom.h>
-#include "mutter-enum-types.h"
+#include <meta/meta-enum-types.h>
 #include "meta-idle-monitor-dbus.h"
 #include "meta-cursor-tracker-private.h"
 #include <meta/meta-backend.h>
 #include "backends/native/meta-backend-native.h"
 #include "backends/x11/meta-backend-x11.h"
+#include "backends/meta-stage.h"
 #include <clutter/x11/clutter-x11.h>

 #ifdef HAVE_RANDR
@@ -548,7 +549,7 @@ meta_display_open (void)
  /* A list of all atom names, so that we can intern them in one go. */
  char *atom_names[] = {
 #define item(x) #x,
-#include <meta/atomnames.h>
+#include <x11/atomnames.h>
 #undef item
  };
  Atom atoms[G_N_ELEMENTS(atom_names)];
@@ -609,7 +610,7 @@ meta_display_open (void)
  {
    int i = 0;
 #define item(x) display->atom_##x = atoms[i++];
-#include <meta/atomnames.h>
+#include <x11/atomnames.h>
 #undef item
  }

@@ -1411,6 +1412,8 @@ meta_display_sync_wayland_input_focus (MetaDisplay *display)
 #ifdef HAVE_WAYLAND
  MetaWaylandCompositor *compositor = meta_wayland_compositor_get_default ();
  MetaWindow *focus_window = NULL;
+  MetaBackend *backend = meta_get_backend ();
+  MetaStage *stage = META_STAGE (meta_backend_get_stage (backend));

  if (!meta_display_windows_are_interactable (display))
    focus_window = NULL;
@@ -1421,6 +1424,7 @@ meta_display_sync_wayland_input_focus (MetaDisplay *display)
  else
    meta_topic (META_DEBUG_FOCUS, "Focus change has no effect, because there is no matching wayland surface");

+  meta_stage_set_active (stage, focus_window == NULL);
  meta_wayland_compositor_set_input_focus (compositor, focus_window);

  meta_wayland_seat_repick (compositor->seat);
@@ -1918,7 +1922,6 @@ meta_display_begin_grab_op (MetaDisplay *display,
  display->grab_last_moveresize_time.tv_usec = 0;
  display->grab_last_user_action_was_snap = FALSE;
  display->grab_frame_action = frame_action;
-  display->grab_resize_unmaximize = 0;

  meta_display_update_cursor (display);

--- a/src/core/events.c
+++ b/src/core/events.c
@@ -40,6 +40,13 @@
 #endif
 #include "meta-surface-actor.h"

+#define IS_GESTURE_EVENT(e) ((e)->type == CLUTTER_TOUCHPAD_SWIPE || \
+                             (e)->type == CLUTTER_TOUCHPAD_PINCH || \
+                             (e)->type == CLUTTER_TOUCH_BEGIN || \
+                             (e)->type == CLUTTER_TOUCH_UPDATE || \
+                             (e)->type == CLUTTER_TOUCH_END || \
+                             (e)->type == CLUTTER_TOUCH_CANCEL)
+
 static MetaWindow *
 get_window_for_event (MetaDisplay        *display,
                      const ClutterEvent *event)
@@ -93,6 +100,15 @@ handle_idletime_for_event (const ClutterEvent *event)
      if (device == NULL)
        return;

+      if (event->any.flags & CLUTTER_EVENT_FLAG_SYNTHETIC ||
+          event->type == CLUTTER_ENTER ||
+          event->type == CLUTTER_LEAVE ||
+          event->type == CLUTTER_STAGE_STATE ||
+          event->type == CLUTTER_DESTROY_NOTIFY ||
+          event->type == CLUTTER_CLIENT_MESSAGE ||
+          event->type == CLUTTER_DELETE)
+        return;
+
      device_id = clutter_input_device_get_device_id (device);

      core_monitor = meta_idle_monitor_get_core ();
@@ -192,6 +208,7 @@ meta_display_handle_event (MetaDisplay        *display,
    {
      MetaCursorTracker *tracker = meta_cursor_tracker_get_for_screen (NULL);
      meta_cursor_tracker_update_position (tracker, event->motion.x, event->motion.y);
+      display->monitor_cache_invalidated = TRUE;
    }

  handle_idletime_for_event (event);
@@ -255,15 +272,18 @@ meta_display_handle_event (MetaDisplay        *display,

  if (window)
    {
-      if (!clutter_event_get_event_sequence (event))
-        {
-          /* Swallow all non-touch events on windows that come our way.
-           * Touch events that reach here aren't yet in an accepted state,
-           * so Clutter must see them to maybe trigger gestures into
-           * recognition.
-           */
-          bypass_clutter = TRUE;
-        }
+      /* Events that are likely to trigger compositor gestures should
+       * be known to clutter so they can propagate along the hierarchy.
+       * Gesture-wise, there's two groups of events we should be getting
+       * here:
+       * - CLUTTER_TOUCH_* with a touch sequence that's not yet accepted
+       *   by the gesture tracker, these might trigger gesture actions
+       *   into recognition. Already accepted touch sequences are handled
+       *   directly by meta_gesture_tracker_handle_event().
+       * - CLUTTER_TOUCHPAD_* events over windows. These can likewise
+       *   trigger ::captured-event handlers along the way.
+       */
+      bypass_clutter = !IS_GESTURE_EVENT (event);

      meta_window_handle_ungrabbed_event (window, event);

--- a/src/core/frame.c
+++ b/src/core/frame.c
@@ -37,7 +37,6 @@ meta_window_ensure_frame (MetaWindow *window)
 {
  MetaFrame *frame;
  XSetWindowAttributes attrs;
-  Visual *visual;
  gulong create_serial;

  if (window->frame)
@@ -58,37 +57,14 @@ meta_window_ensure_frame (MetaWindow *window)
  frame->is_flashing = FALSE;
  frame->borders_cached = FALSE;

-  meta_verbose ("Framing window %s: visual %s default, depth %d default depth %d\n",
-                window->desc,
-                XVisualIDFromVisual (window->xvisual) ==
-                XVisualIDFromVisual (window->screen->default_xvisual) ?
-                "is" : "is not",
-                window->depth, window->screen->default_depth);
  meta_verbose ("Frame geometry %d,%d  %dx%d\n",
                frame->rect.x, frame->rect.y,
                frame->rect.width, frame->rect.height);

-  /* Default depth/visual handles clients with weird visuals; they can
-   * always be children of the root depth/visual obviously, but
-   * e.g. DRI games can't be children of a parent that has the same
-   * visual as the client. NULL means default visual.
-   *
-   * We look for an ARGB visual if we can find one, otherwise use
-   * the default of NULL.
-   */
-
-  /* Special case for depth 32 windows (assumed to be ARGB),
-   * we use the window's visual. Otherwise we just use the system visual.
-   */
-  if (window->depth == 32)
-    visual = window->xvisual;
-  else
-    visual = NULL;
-
  frame->ui_frame = meta_ui_create_frame (window->screen->ui,
                                          window->display->xdisplay,
                                          frame->window,
-                                          visual,
+                                          window->xvisual,
                                          frame->rect.x,
                                          frame->rect.y,
                                          frame->rect.width,
--- a/src/core/keybindings-private.h
+++ b/src/core/keybindings-private.h
@@ -30,6 +30,7 @@
 #include <gio/gio.h>
 #include <meta/keybindings.h>
 #include <xkbcommon/xkbcommon.h>
+#include "meta-accel-parse.h"

 typedef struct _MetaKeyHandler MetaKeyHandler;
 struct _MetaKeyHandler
@@ -53,7 +54,6 @@ typedef struct _MetaResolvedKeyCombo {
 * @keycode: keycode
 * @modifiers: modifiers
 */
-typedef struct _MetaKeyCombo MetaKeyCombo;
 struct _MetaKeyCombo
 {
  unsigned int keysym;
--- a/src/core/keybindings.c
+++ b/src/core/keybindings.c
@@ -3186,7 +3186,7 @@ handle_move_to_monitor (MetaDisplay    *display,
  gint which = binding->handler->data;
  const MetaMonitorInfo *current, *new;

-  current = meta_screen_get_monitor_for_window (screen, window);
+  current = window->monitor;
  new = meta_screen_get_monitor_neighbor (screen, current->number, which);

  if (new == NULL)
--- a/src/core/meta-accel-parse.c
+++ b/src/core/meta-accel-parse.c
@@ -176,7 +176,6 @@ static gboolean
 accelerator_parse (const gchar         *accelerator,
                   MetaKeyCombo        *combo)
 {
-  gboolean error = FALSE;
  guint keyval, keycode;
  MetaVirtualModifier mods;
  gint len;
@@ -186,10 +185,7 @@ accelerator_parse (const gchar         *accelerator,
  combo->modifiers = 0;

  if (accelerator == NULL)
-    {
-      error = TRUE;
-      goto out;
-    }
+    return FALSE;

  keyval = 0;
  keycode = 0;
@@ -310,10 +306,7 @@ accelerator_parse (const gchar         *accelerator,
                  g_free (with_xf86);

                  if (keyval == XKB_KEY_NoSymbol)
-                    {
-                      error = TRUE;
-                      goto out;
-                    }
+                    return FALSE;
                }
 	    }

@@ -322,14 +315,10 @@ accelerator_parse (const gchar         *accelerator,
        }
    }

-out:
-  if (error)
-    return FALSE;
-
+ out:
  combo->keysym = keyval;
  combo->keycode = keycode;
  combo->modifiers = mods;
-
  return TRUE;
 }

--- a/src/core/prefs.c
+++ b/src/core/prefs.c
@@ -2113,12 +2113,6 @@ meta_prefs_add_keybinding (const char           *name,
  pref->combos = NULL;
  pref->builtin = (flags & META_KEY_BINDING_BUILTIN) != 0;

-  strokes = g_settings_get_strv (settings, name);
-  update_binding (pref, strokes);
-  g_strfreev (strokes);
-
-  g_hash_table_insert (key_bindings, g_strdup (name), pref);
-
  if (pref->builtin)
    {
      if (g_object_get_data (G_OBJECT (settings), "changed-signal") == NULL)
@@ -2140,6 +2134,12 @@ meta_prefs_add_keybinding (const char           *name,
      queue_changed (META_PREF_KEYBINDINGS);
    }

+  strokes = g_settings_get_strv (settings, name);
+  update_binding (pref, strokes);
+  g_strfreev (strokes);
+
+  g_hash_table_insert (key_bindings, g_strdup (name), pref);
+
  return TRUE;
 }

--- a/src/core/screen-private.h
+++ b/src/core/screen-private.h
@@ -41,14 +41,6 @@
 typedef void (* MetaScreenWindowFunc) (MetaWindow *window,
                                       gpointer    user_data);

-typedef enum
-{
-  META_SCREEN_UP,
-  META_SCREEN_DOWN,
-  META_SCREEN_LEFT,
-  META_SCREEN_RIGHT
-} MetaScreenDirection;
-
 #define META_WIREFRAME_XOR_LINE_WIDTH 2

 struct _MetaScreen
@@ -157,8 +149,8 @@ const MetaMonitorInfo* meta_screen_get_current_monitor_info_for_pos   (MetaScree
                                                                       int y);
 const MetaMonitorInfo* meta_screen_get_monitor_for_rect   (MetaScreen    *screen,
                                                           MetaRectangle *rect);
-const MetaMonitorInfo* meta_screen_get_monitor_for_window (MetaScreen    *screen,
-                                                           MetaWindow    *window);
+const MetaMonitorInfo* meta_screen_calculate_monitor_for_window (MetaScreen    *screen,
+                                                                 MetaWindow    *window);


 const MetaMonitorInfo* meta_screen_get_monitor_neighbor (MetaScreen *screen,
--- a/src/core/screen.c
+++ b/src/core/screen.c
@@ -40,7 +40,7 @@
 #include "keybindings-private.h"
 #include "stack.h"
 #include <meta/compositor.h>
-#include "mutter-enum-types.h"
+#include <meta/meta-enum-types.h>
 #include "core.h"
 #include "meta-cursor-tracker-private.h"

@@ -294,7 +294,7 @@ set_supported_hint (MetaScreen *screen)
  Atom atoms[] = {
 #define EWMH_ATOMS_ONLY
 #define item(x)  screen->display->atom_##x,
-#include <meta/atomnames.h>
+#include <x11/atomnames.h>
 #undef item
 #undef EWMH_ATOMS_ONLY

@@ -750,7 +750,7 @@ void
 meta_screen_init_workspaces (MetaScreen *screen)
 {
  MetaWorkspace *current_workspace;
-  gulong current_workspace_index = 0;
+  uint32_t current_workspace_index = 0;
  guint32 timestamp;

  g_return_if_fail (META_IS_SCREEN (screen));
@@ -1166,7 +1166,7 @@ update_num_workspaces (MetaScreen *screen,
  if (meta_prefs_get_dynamic_workspaces ())
    {
      int n_items;
-      gulong *list;
+      uint32_t *list;

      n_items = 0;
      list = NULL;
@@ -1439,8 +1439,8 @@ meta_screen_get_monitor_for_rect (MetaScreen    *screen,
 }

 const MetaMonitorInfo*
-meta_screen_get_monitor_for_window (MetaScreen *screen,
-                                    MetaWindow *window)
+meta_screen_calculate_monitor_for_window (MetaScreen *screen,
+                                          MetaWindow *window)
 {
  MetaRectangle window_rect;

@@ -1490,6 +1490,16 @@ meta_screen_get_monitor_neighbor (MetaScreen         *screen,
  return NULL;
 }

+int
+meta_screen_get_monitor_neighbor_index (MetaScreen         *screen,
+                                        int                 which_monitor,
+                                        MetaScreenDirection direction)
+{
+  const MetaMonitorInfo *monitor;
+  monitor = meta_screen_get_monitor_neighbor (screen, which_monitor, direction);
+  return monitor ? monitor->number : -1;
+}
+
 void
 meta_screen_get_natural_monitor_list (MetaScreen *screen,
                                      int**       monitors_list,
@@ -1745,7 +1755,7 @@ meta_screen_get_monitor_geometry (MetaScreen    *screen,
 void
 meta_screen_update_workspace_layout (MetaScreen *screen)
 {
-  gulong *list;
+  uint32_t *list;
  int n_items;

  if (screen->workspace_layout_overridden)
@@ -2378,12 +2388,12 @@ on_monitors_changed (MetaMonitorManager *manager,
                       &changes);
    }

-  /* Queue a resize on all the windows */
-  meta_screen_foreach_window (screen, META_LIST_DEFAULT, meta_screen_resize_func, 0);
-
  /* Fix up monitor for all windows on this screen */
  meta_screen_foreach_window (screen, META_LIST_INCLUDE_OVERRIDE_REDIRECT, (MetaScreenWindowFunc) meta_window_update_for_monitors_changed, 0);

+  /* Queue a resize on all the windows */
+  meta_screen_foreach_window (screen, META_LIST_DEFAULT, meta_screen_resize_func, 0);
+
  meta_screen_queue_check_fullscreen (screen);

  g_signal_emit (screen, screen_signals[MONITORS_CHANGED], 0);
--- a/src/core/stack.c
+++ b/src/core/stack.c
@@ -288,8 +288,7 @@ windows_on_different_monitor (MetaWindow *a,
  if (a->screen != b->screen)
    return TRUE;

-  return meta_screen_get_monitor_for_window (a->screen, a) !=
-    meta_screen_get_monitor_for_window (b->screen, b);
+  return a->monitor != b->monitor;
 }

 /* Get layer ignoring any transient or group relationships */
@@ -1239,24 +1238,10 @@ get_default_focus_window (MetaStack     *stack,
 {
  /* Find the topmost, focusable, mapped, window.
   * not_this_one is being unfocused or going away, so exclude it.
-   * Also, prefer to focus transient parent of not_this_one,
-   * or top window in same group as not_this_one.
   */

-  MetaWindow *transient_parent;
-  MetaWindow *topmost_in_group;
-  MetaWindow *topmost_overall;
-  MetaGroup *not_this_one_group;
  GList *l;

-  transient_parent = NULL;
-  topmost_in_group = NULL;
-  topmost_overall = NULL;
-  if (not_this_one)
-    not_this_one_group = meta_window_get_group (not_this_one);
-  else
-    not_this_one_group = NULL;
-
  stack_ensure_sorted (stack);

  /* top of this layer is at the front of the list */
@@ -1273,49 +1258,25 @@ get_default_focus_window (MetaStack     *stack,
      if (window->unmaps_pending > 0)
        continue;

-      if (window->minimized)
-        continue;
-
      if (window->unmanaging)
        continue;

      if (!(window->input || window->take_focus))
        continue;

-      if (workspace != NULL && !meta_window_located_on_workspace (window, workspace))
+      if (!meta_window_should_be_showing (window))
        continue;

      if (must_be_at_point && !window_contains_point (window, root_x, root_y))
        continue;

-      if (not_this_one != NULL)
-        {
-          if (transient_parent == NULL &&
-              meta_window_get_transient_for (not_this_one) == window)
-            transient_parent = window;
+      if (window->type == META_WINDOW_DOCK)
+        continue;

-          if (topmost_in_group == NULL &&
-              not_this_one_group != NULL &&
-              not_this_one_group == meta_window_get_group (window))
-            topmost_in_group = window;
-        }
-
-      if (topmost_overall == NULL && window->type != META_WINDOW_DOCK)
-        topmost_overall = window;
-
-      /* We could try to bail out early here for efficiency in
-       * some cases, but it's just not worth the code.
-       */
+      return window;
    }

-  if (transient_parent)
-    return transient_parent;
-  else if (topmost_in_group)
-    return topmost_in_group;
-  else if (topmost_overall)
-    return topmost_overall;
-  else
-    return NULL;
+  return NULL;
 }

 MetaWindow*
--- a/src/core/window-private.h
+++ b/src/core/window-private.h
@@ -78,6 +78,7 @@ typedef enum
  META_MOVE_RESIZE_RESIZE_ACTION     = 1 << 3,
  META_MOVE_RESIZE_WAYLAND_RESIZE    = 1 << 4,
  META_MOVE_RESIZE_STATE_CHANGED     = 1 << 5,
+  META_MOVE_RESIZE_DONT_SYNC_COMPOSITOR = 1 << 6,
 } MetaMoveResizeFlags;

 typedef enum
@@ -434,7 +435,6 @@ struct _MetaWindow

  /* Managed by delete.c */
  int dialog_pid;
-  guint is_alive : 1;

  /* maintained by group.c */
  MetaGroup *group;
@@ -482,6 +482,7 @@ struct _MetaWindowClass
  gboolean (*update_icon)        (MetaWindow       *window,
                                  cairo_surface_t **icon,
                                  cairo_surface_t **mini_icon);
+  void (*update_main_monitor)    (MetaWindow *window);
  void (*main_monitor_changed)   (MetaWindow *window,
                                  const MetaMonitorInfo *old);
 };
@@ -695,4 +696,6 @@ void meta_window_set_alive (MetaWindow *window, gboolean is_alive);

 gboolean meta_window_has_pointer (MetaWindow *window);

+void meta_window_emit_size_changed (MetaWindow *window);
+
 #endif
--- a/src/core/window.c
+++ b/src/core/window.c
@@ -41,7 +41,7 @@
 #include <meta/prefs.h>
 #include <meta/group.h>
 #include "constraints.h"
-#include "mutter-enum-types.h"
+#include <meta/meta-enum-types.h>
 #include "core.h"

 #include <X11/Xatom.h>
@@ -57,7 +57,8 @@
 #include "x11/xprops.h"

 #ifdef HAVE_WAYLAND
-#include "wayland/window-wayland.h"
+#include "wayland/meta-window-wayland.h"
+#include "wayland/meta-wayland-surface.h"
 #include "wayland/meta-wayland-private.h"
 #endif

@@ -723,6 +724,12 @@ meta_window_should_attach_to_parent (MetaWindow *window)
 static gboolean
 client_window_should_be_mapped (MetaWindow *window)
 {
+#ifdef HAVE_WAYLAND
+  if (window->client_type == META_WINDOW_CLIENT_TYPE_WAYLAND &&
+      !window->surface->buffer)
+    return FALSE;
+#endif
+
  return !window->shaded;
 }

@@ -974,7 +981,8 @@ _meta_window_shared_new (MetaDisplay         *display,

  window->compositor_private = NULL;

-  window->monitor = meta_screen_get_monitor_for_window (window->screen, window);
+  window->monitor = meta_screen_calculate_monitor_for_window (window->screen,
+                                                              window);
  window->preferred_output_winsys_id = window->monitor->winsys_id;

  window->tile_match = NULL;
@@ -1533,6 +1541,12 @@ meta_window_showing_on_its_workspace (MetaWindow *window)
 gboolean
 meta_window_should_be_showing (MetaWindow  *window)
 {
+#ifdef HAVE_WAYLAND
+  if (window->client_type == META_WINDOW_CLIENT_TYPE_WAYLAND &&
+      !window->surface->buffer)
+    return FALSE;
+#endif
+
  /* Windows should be showing if they're located on the
   * active workspace and they're showing on their own workspace. */
  return (meta_window_located_on_workspace (window, window->screen->active_workspace) &&
@@ -2651,8 +2665,6 @@ meta_window_maximize (MetaWindow        *window,
 {
  MetaRectangle *saved_rect = NULL;
  gboolean maximize_horizontally, maximize_vertically;
-  MetaRectangle old_rect;
-  MetaRectangle new_rect;

  g_return_if_fail (!window->override_redirect);

@@ -2702,18 +2714,23 @@ meta_window_maximize (MetaWindow        *window,
                                     directions,
                                     saved_rect);

-      meta_window_get_frame_rect (window, &old_rect);
+      MetaRectangle old_frame_rect, old_buffer_rect, new_rect;
+
+      meta_window_get_frame_rect (window, &old_frame_rect);
+      meta_window_get_buffer_rect (window, &old_buffer_rect);

      meta_window_move_resize_internal (window,
-                                        META_MOVE_RESIZE_MOVE_ACTION | META_MOVE_RESIZE_RESIZE_ACTION | META_MOVE_RESIZE_STATE_CHANGED,
+                                        (META_MOVE_RESIZE_MOVE_ACTION |
+                                         META_MOVE_RESIZE_RESIZE_ACTION |
+                                         META_MOVE_RESIZE_STATE_CHANGED |
+                                         META_MOVE_RESIZE_DONT_SYNC_COMPOSITOR),
                                        NorthWestGravity,
                                        window->unconstrained_rect);
-
      meta_window_get_frame_rect (window, &new_rect);
-      meta_compositor_maximize_window (window->display->compositor,
-                                       window,
-                                       &old_rect,
-                                       &new_rect);
+
+      meta_compositor_size_change_window (window->display->compositor, window,
+                                          META_SIZE_CHANGE_MAXIMIZE,
+                                          &old_frame_rect, &old_buffer_rect);
    }
 }

@@ -2873,8 +2890,6 @@ void
 meta_window_tile (MetaWindow *window)
 {
  MetaMaximizeFlags directions;
-  MetaRectangle old_rect;
-  MetaRectangle new_rect;

  /* Don't do anything if no tiling is requested */
  if (window->tile_mode == META_TILE_NONE)
@@ -2888,16 +2903,8 @@ meta_window_tile (MetaWindow *window)
  meta_window_maximize_internal (window, directions, NULL);
  meta_screen_update_tile_preview (window->screen, FALSE);

-  meta_window_get_frame_rect (window, &old_rect);
-
  meta_window_move_resize_now (window);

-  meta_window_get_frame_rect (window, &new_rect);
-  meta_compositor_maximize_window (window->display->compositor,
-                                   window,
-                                   &old_rect,
-                                   &new_rect);
-
  if (window->frame)
    meta_frame_queue_draw (window->frame);
 }
@@ -2965,11 +2972,9 @@ unmaximize_window_before_freeing (MetaWindow        *window)
    }
 }

-static void
-meta_window_unmaximize_internal (MetaWindow        *window,
-                                 MetaMaximizeFlags  directions,
-                                 MetaRectangle     *desired_rect,
-                                 int                gravity)
+void
+meta_window_unmaximize (MetaWindow        *window,
+                        MetaMaximizeFlags  directions)
 {
  gboolean unmaximize_horizontally, unmaximize_vertically;
  MetaRectangle new_rect;
@@ -2990,12 +2995,14 @@ meta_window_unmaximize_internal (MetaWindow        *window,
  if ((unmaximize_horizontally && window->maximized_horizontally) ||
      (unmaximize_vertically   && window->maximized_vertically))
    {
+      MetaRectangle *desired_rect;
      MetaRectangle target_rect;
      MetaRectangle work_area;
-      MetaRectangle old_rect;
+      MetaRectangle old_frame_rect, old_buffer_rect;

      meta_window_get_work_area_for_monitor (window, window->monitor->number, &work_area);
-      meta_window_get_frame_rect (window, &old_rect);
+      meta_window_get_frame_rect (window, &old_frame_rect);
+      meta_window_get_buffer_rect (window, &old_buffer_rect);

      meta_topic (META_DEBUG_WINDOW_OPS,
                  "Unmaximizing %s%s\n",
@@ -3015,10 +3022,12 @@ meta_window_unmaximize_internal (MetaWindow        *window,
       */
      meta_window_frame_size_changed (window);

+      desired_rect = &window->saved_rect;
+
      /* Unmaximize to the saved_rect position in the direction(s)
       * being unmaximized.
       */
-      target_rect = old_rect;
+      target_rect = old_frame_rect;

      /* Avoid unmaximizing to "almost maximized" size when the previous size
       * is greater then 80% of the work area use MAX_UNMAXIMIZED_WINDOW_AREA of the work area as upper limit
@@ -3060,15 +3069,17 @@ meta_window_unmaximize_internal (MetaWindow        *window,
      meta_window_client_rect_to_frame_rect (window, &target_rect, &target_rect);

      meta_window_move_resize_internal (window,
-                                        META_MOVE_RESIZE_MOVE_ACTION | META_MOVE_RESIZE_RESIZE_ACTION | META_MOVE_RESIZE_STATE_CHANGED,
-                                        gravity,
+                                        (META_MOVE_RESIZE_MOVE_ACTION |
+                                         META_MOVE_RESIZE_RESIZE_ACTION |
+                                         META_MOVE_RESIZE_STATE_CHANGED |
+                                         META_MOVE_RESIZE_DONT_SYNC_COMPOSITOR),
+                                        NorthWestGravity,
                                        target_rect);

      meta_window_get_frame_rect (window, &new_rect);
-      meta_compositor_unmaximize_window (window->display->compositor,
-                                         window,
-                                         &old_rect,
-                                         &new_rect);
+      meta_compositor_size_change_window (window->display->compositor, window,
+                                          META_SIZE_CHANGE_UNMAXIMIZE,
+                                          &old_frame_rect, &old_buffer_rect);

      /* When we unmaximize, if we're doing a mouse move also we could
       * get the window suddenly jumping to the upper left corner of
@@ -3095,37 +3106,6 @@ meta_window_unmaximize_internal (MetaWindow        *window,
  g_object_thaw_notify (G_OBJECT (window));
 }

-void
-meta_window_unmaximize (MetaWindow        *window,
-                        MetaMaximizeFlags  directions)
-{
-  meta_window_unmaximize_internal (window, directions, &window->saved_rect,
-                                   NorthWestGravity);
-}
-
-/* Like meta_window_unmaximize(), but instead of unmaximizing to the
- * saved position, we give the new desired size, and the gravity that
- * determines the positioning relationship between the area occupied
- * maximized and the new are. The arguments are similar to
- * meta_window_resize_with_gravity().
- * Unlike meta_window_unmaximize(), tiling is not restored for windows
- * with a tile mode other than META_TILE_NONE.
- */
-static void
-meta_window_unmaximize_with_gravity (MetaWindow        *window,
-                                     MetaMaximizeFlags  directions,
-                                     int                new_width,
-                                     int                new_height,
-                                     int                gravity)
-{
-  MetaRectangle desired_rect;
-
-  desired_rect.width = new_width;
-  desired_rect.height = new_height;
-
-  meta_window_unmaximize_internal (window, directions, &desired_rect, gravity);
-}
-
 void
 meta_window_make_above (MetaWindow  *window)
 {
@@ -3228,6 +3208,8 @@ meta_window_unmake_fullscreen (MetaWindow  *window)
      window->fullscreen = FALSE;
      target_rect = window->saved_rect;

+      meta_window_frame_size_changed (window);
+
      /* Window's size hints may have changed while maximized, making
       * saved_rect invalid.  #329152
       */
@@ -3565,7 +3547,7 @@ meta_window_update_monitor (MetaWindow *window,
  const MetaMonitorInfo *old;

  old = window->monitor;
-  window->monitor = meta_screen_get_monitor_for_window (window->screen, window);
+  META_WINDOW_GET_CLASS (window)->update_main_monitor (window);
  if (old != window->monitor)
    {
      meta_window_on_all_workspaces_changed (window);
@@ -3706,7 +3688,7 @@ meta_window_move_resize_internal (MetaWindow          *window,
    {
      window->unconstrained_rect = unconstrained_rect;

-      if (window->known_to_compositor)
+      if (window->known_to_compositor && !(flags & META_MOVE_RESIZE_DONT_SYNC_COMPOSITOR))
        meta_compositor_sync_window_geometry (window->display->compositor,
                                              window,
                                              did_placement);
@@ -4038,9 +4020,8 @@ meta_window_get_buffer_rect (const MetaWindow *window,
 * @client_rect: client rectangle in root coordinates
 * @frame_rect: (out): location to store the computed corresponding frame bounds.
 *
- * Converts a desired bounds of the client window - what is passed to meta_window_move_resize() -
- * into the corresponding bounds of the window frame (excluding invisible borders
- * and client side shadows.)
+ * Converts a desired bounds of the client window into the corresponding bounds
+ * of the window frame (excluding invisible borders and client side shadows.)
 */
 void
 meta_window_client_rect_to_frame_rect (MetaWindow    *window,
@@ -4087,7 +4068,7 @@ meta_window_client_rect_to_frame_rect (MetaWindow    *window,
 * @client_rect: (out): location to store the computed corresponding client rectangle.
 *
 * Converts a desired frame bounds for a window into the bounds of the client
- * window - what is passed to meta_window_move_resize().
+ * window.
 */
 void
 meta_window_frame_rect_to_client_rect (MetaWindow    *window,
@@ -4634,12 +4615,7 @@ meta_window_change_workspace_by_index (MetaWindow *window,
    workspace = meta_screen_append_new_workspace (screen, FALSE, CurrentTime);

  if (workspace)
-    {
-      if (window->on_all_workspaces_requested)
-        meta_window_unstick (window);
-
-      meta_window_change_workspace (window, workspace);
-    }
+    meta_window_change_workspace (window, workspace);
 }

 static void
@@ -5658,7 +5634,7 @@ update_move (MetaWindow  *window,
      int monitor;

      window->tile_mode = META_TILE_NONE;
-      wmonitor = meta_screen_get_monitor_for_window (window->screen, window);
+      wmonitor = window->monitor;

      for (monitor = 0; monitor < window->screen->n_monitor_infos; monitor++)
        {
@@ -5728,81 +5704,6 @@ update_move (MetaWindow  *window,
  meta_window_move_frame (window, TRUE, new_x, new_y);
 }

-/* When resizing a maximized window by using alt-middle-drag (resizing
- * with the grips or the menu for a maximized window is not enabled),
- * the user can "break" out of the maximized state. This checks for
- * that possibility. During such a break-out resize the user can also
- * return to the previous maximization state by resizing back to near
- * the original size.
- */
-static MetaMaximizeFlags
-check_resize_unmaximize(MetaWindow *window,
-                        int         dx,
-                        int         dy)
-{
-  int threshold;
-  MetaMaximizeFlags new_unmaximize;
-
-#define DRAG_THRESHOLD_TO_RESIZE_THRESHOLD_FACTOR 3
-
-  threshold = meta_prefs_get_drag_threshold () *
-    DRAG_THRESHOLD_TO_RESIZE_THRESHOLD_FACTOR;
-  new_unmaximize = 0;
-
-  if (window->maximized_horizontally ||
-      window->tile_mode != META_TILE_NONE ||
-      (window->display->grab_resize_unmaximize & META_MAXIMIZE_HORIZONTAL) != 0)
-    {
-      int x_amount;
-
-      /* We allow breaking out of maximization in either direction, to make
-       * the window larger than the monitor as well as smaller than the
-       * monitor. If we wanted to only allow resizing smaller than the
-       * monitor, we'd use - dx for NE/E/SE and dx for SW/W/NW.
-       */
-      if ((window->display->grab_op & (META_GRAB_OP_WINDOW_DIR_WEST | META_GRAB_OP_WINDOW_DIR_EAST)) != 0)
-        x_amount = dx < 0 ? - dx : dx;
-      else
-        x_amount = 0;
-
-      if (x_amount > threshold)
-        new_unmaximize |= META_MAXIMIZE_HORIZONTAL;
-    }
-
-  if (window->maximized_vertically ||
-      (window->display->grab_resize_unmaximize & META_MAXIMIZE_VERTICAL) != 0)
-    {
-      int y_amount;
-
-      if ((window->display->grab_op & (META_GRAB_OP_WINDOW_DIR_NORTH | META_GRAB_OP_WINDOW_DIR_SOUTH)) != 0)
-        y_amount = dy < 0 ? - dy : dy;
-      else
-        y_amount = 0;
-
-      if (y_amount > threshold)
-        new_unmaximize |= META_MAXIMIZE_VERTICAL;
-    }
-
-  /* Metacity doesn't have a full user interface for only horizontally or
-   * vertically maximized, so while only unmaximizing in the direction drags
-   * has some advantages, it will also confuse the user. So, we always
-   * unmaximize both ways if possible.
-   */
-  if (new_unmaximize != 0)
-    {
-      new_unmaximize = 0;
-
-      if (window->maximized_horizontally ||
-          (window->display->grab_resize_unmaximize & META_MAXIMIZE_HORIZONTAL) != 0)
-        new_unmaximize |= META_MAXIMIZE_HORIZONTAL;
-      if (window->maximized_vertically ||
-          (window->display->grab_resize_unmaximize & META_MAXIMIZE_VERTICAL) != 0)
-        new_unmaximize |= META_MAXIMIZE_VERTICAL;
-    }
-
-  return new_unmaximize;
-}
-
 static gboolean
 update_resize_timeout (gpointer data)
 {
@@ -5827,7 +5728,6 @@ update_resize (MetaWindow *window,
  int gravity;
  MetaRectangle old;
  double remaining = 0;
-  MetaMaximizeFlags new_unmaximize;

  window->display->grab_latest_motion_x = x;
  window->display->grab_latest_motion_y = y;
@@ -5874,8 +5774,6 @@ update_resize (MetaWindow *window,
      meta_window_update_keyboard_resize (window, TRUE);
    }

-  new_unmaximize = check_resize_unmaximize (window, dx, dy);
-
  if (window->display->grab_op & META_GRAB_OP_WINDOW_DIR_EAST)
    new_w += dx;
  else if (window->display->grab_op & META_GRAB_OP_WINDOW_DIR_WEST)
@@ -5944,29 +5842,7 @@ update_resize (MetaWindow *window,
                                          snap,
                                          FALSE);

-  if (new_unmaximize == window->display->grab_resize_unmaximize)
-    {
-      meta_window_resize_frame_with_gravity (window, TRUE, new_w, new_h, gravity);
-    }
-  else
-    {
-      if ((new_unmaximize & ~window->display->grab_resize_unmaximize) != 0)
-        {
-          meta_window_unmaximize_with_gravity (window,
-                                               (new_unmaximize & ~window->display->grab_resize_unmaximize),
-                                               new_w, new_h, gravity);
-        }
-
-      if ((window->display->grab_resize_unmaximize & ~new_unmaximize))
-        {
-          MetaRectangle saved_rect = window->saved_rect;
-          meta_window_maximize (window,
-                                (window->display->grab_resize_unmaximize & ~new_unmaximize));
-          window->saved_rect = saved_rect;
-        }
-    }
-
-  window->display->grab_resize_unmaximize = new_unmaximize;
+  meta_window_resize_frame_with_gravity (window, TRUE, new_w, new_h, gravity);

  /* Store the latest resize time, if we actually resized. */
  if (window->rect.width != old.width || window->rect.height != old.height)
@@ -6167,12 +6043,8 @@ void
 meta_window_get_work_area_current_monitor (MetaWindow    *window,
                                           MetaRectangle *area)
 {
-  const MetaMonitorInfo *monitor = NULL;
-  monitor = meta_screen_get_monitor_for_window (window->screen,
-                                                window);
-
  meta_window_get_work_area_for_monitor (window,
-                                         monitor->number,
+                                         window->monitor->number,
                                         area);
 }

@@ -7977,3 +7849,9 @@ meta_window_grab_op_ended (MetaWindow *window,
 {
  META_WINDOW_GET_CLASS (window)->grab_op_ended (window, op);
 }
+
+void
+meta_window_emit_size_changed (MetaWindow *window)
+{
+  g_signal_emit (window, window_signals[SIZE_CHANGED], 0);
+}
--- a/src/mutter-enum-types.c.in
+++ b/src/mutter-enum-types.c.in
@@ -1,5 +1,5 @@
 /*** BEGIN file-header ***/
-#include "mutter-enum-types.h"
+#include <meta/meta-enum-types.h>
 /*** END file-header ***/

 /*** BEGIN file-production ***/
--- a/src/mutter-enum-types.h.in
+++ b/src/mutter-enum-types.h.in
@@ -1,6 +1,6 @@
 /*** BEGIN file-header ***/
-#ifndef __MUTTER_ENUM_TYPES_H__
-#define __MUTTER_ENUM_TYPES_H__
+#ifndef __META_ENUM_TYPES_H__
+#define __META_ENUM_TYPES_H__

 #include <glib-object.h>

--- a/src/meta/compositor.h
+++ b/src/meta/compositor.h
@@ -54,6 +54,11 @@ typedef enum
  META_COMP_EFFECT_NONE
 } MetaCompEffect;

+typedef enum {
+  META_SIZE_CHANGE_MAXIMIZE,
+  META_SIZE_CHANGE_UNMAXIMIZE,
+} MetaSizeChange;
+
 MetaCompositor *meta_compositor_new     (MetaDisplay    *display);
 void            meta_compositor_destroy (MetaCompositor *compositor);

@@ -89,14 +94,11 @@ void meta_compositor_switch_workspace  (MetaCompositor      *compositor,
                                        MetaWorkspace       *to,
                                        MetaMotionDirection  direction);

-void meta_compositor_maximize_window   (MetaCompositor      *compositor,
-                                        MetaWindow          *window,
-                                        MetaRectangle       *old_rect,
-                                        MetaRectangle       *new_rect);
-void meta_compositor_unmaximize_window (MetaCompositor      *compositor,
-                                        MetaWindow          *window,
-                                        MetaRectangle       *old_rect,
-                                        MetaRectangle       *new_rect);
+void meta_compositor_size_change_window (MetaCompositor      *compositor,
+                                         MetaWindow          *window,
+                                         MetaSizeChange       which_change,
+                                         MetaRectangle       *old_frame_rect,
+                                         MetaRectangle       *old_buffer_rect);

 void meta_compositor_sync_window_geometry (MetaCompositor *compositor,
                                           MetaWindow     *window,
--- a/src/meta/meta-background.h
+++ b/src/meta/meta-background.h
@@ -57,6 +57,8 @@ struct _MetaBackground
  MetaBackgroundPrivate *priv;
 };

+void meta_background_refresh_all (void);
+
 GType meta_background_get_type (void);

 MetaBackground *meta_background_new  (MetaScreen *screen);
--- a/src/meta/meta-plugin.h
+++ b/src/meta/meta-plugin.h
@@ -55,8 +55,7 @@ struct _MetaPlugin
 * MetaPluginClass:
 * @start: virtual function called when the compositor starts managing a screen
 * @minimize: virtual function called when a window is minimized
- * @maximize: virtual function called when a window is maximized
- * @unmaximize: virtual function called when a window is unmaximized
+ * @size_change: virtual function called when a window changes size to/from constraints
 * @map: virtual function called when a window is mapped
 * @destroy: virtual function called when a window is destroyed
 * @switch_workspace: virtual function called when the user switches to another
@@ -103,39 +102,11 @@ struct _MetaPluginClass
  void (*unminimize)       (MetaPlugin         *plugin,
                            MetaWindowActor    *actor);

-  /**
-   * MetaPluginClass::maximize:
-   * @actor: a #MetaWindowActor
-   * @x: target X coordinate
-   * @y: target Y coordinate
-   * @width: target width
-   * @height: target height
-   *
-   * Virtual function called when the window represented by @actor is maximized.
-   */
-  void (*maximize)         (MetaPlugin         *plugin,
+  void (*size_change)      (MetaPlugin         *plugin,
                            MetaWindowActor    *actor,
-                            gint                x,
-                            gint                y,
-                            gint                width,
-                            gint                height);
-
-  /**
-   * MetaPluginClass::unmaximize:
-   * @actor: a #MetaWindowActor
-   * @x: target X coordinate
-   * @y: target Y coordinate
-   * @width: target width
-   * @height: target height
-   *
-   * Virtual function called when the window represented by @actor is unmaximized.
-   */
-  void (*unmaximize)       (MetaPlugin         *plugin,
-                            MetaWindowActor    *actor,
-                            gint                x,
-                            gint                y,
-                            gint                width,
-                            gint                height);
+                            MetaSizeChange      which_change,
+                            MetaRectangle      *old_frame_rect,
+                            MetaRectangle      *old_buffer_rect);

  /**
   * MetaPluginClass::map:
@@ -386,12 +357,8 @@ meta_plugin_unminimize_completed (MetaPlugin      *plugin,
                                  MetaWindowActor *actor);

 void
-meta_plugin_maximize_completed (MetaPlugin      *plugin,
-                                MetaWindowActor *actor);
-
-void
-meta_plugin_unmaximize_completed (MetaPlugin      *plugin,
-                                  MetaWindowActor *actor);
+meta_plugin_size_change_completed (MetaPlugin      *plugin,
+                                   MetaWindowActor *actor);

 void
 meta_plugin_map_completed (MetaPlugin      *plugin,
--- a/src/meta/meta-shadow-factory.h
+++ b/src/meta/meta-shadow-factory.h
@@ -23,7 +23,11 @@
 #ifndef __META_SHADOW_FACTORY_H__
 #define __META_SHADOW_FACTORY_H__

-#include <glib-object.h>
+#include <cairo.h>
+#include <clutter/clutter.h>
+#include <meta/meta-window-shape.h>
+
+GType meta_shadow_get_type (void) G_GNUC_CONST;

 /**
 * MetaShadowParams:
@@ -81,4 +85,38 @@ void meta_shadow_factory_get_params (MetaShadowFactory *factory,
                                     gboolean           focused,
                                     MetaShadowParams  *params);

+/**
+ * MetaShadow:
+ * #MetaShadow holds a shadow texture along with information about how to
+ * apply that texture to draw a window texture. (E.g., it knows how big the
+ * unscaled borders are on each side of the shadow texture.)
+ */
+typedef struct _MetaShadow MetaShadow;
+
+MetaShadow *meta_shadow_ref         (MetaShadow            *shadow);
+void        meta_shadow_unref       (MetaShadow            *shadow);
+void        meta_shadow_paint       (MetaShadow            *shadow,
+                                     int                    window_x,
+                                     int                    window_y,
+                                     int                    window_width,
+                                     int                    window_height,
+                                     guint8                 opacity,
+                                     cairo_region_t        *clip,
+                                     gboolean               clip_strictly);
+void        meta_shadow_get_bounds  (MetaShadow            *shadow,
+                                     int                    window_x,
+                                     int                    window_y,
+                                     int                    window_width,
+                                     int                    window_height,
+                                     cairo_rectangle_int_t *bounds);
+
+MetaShadowFactory *meta_shadow_factory_new (void);
+
+MetaShadow *meta_shadow_factory_get_shadow (MetaShadowFactory *factory,
+                                            MetaWindowShape   *shape,
+                                            int                width,
+                                            int                height,
+                                            const char        *class_name,
+                                            gboolean           focused);
+
 #endif /* __META_SHADOW_FACTORY_H__ */
--- a/src/meta/meta-window-actor.h
+++ b/src/meta/meta-window-actor.h
@@ -62,4 +62,10 @@ MetaWindow *       meta_window_actor_get_meta_window      (MetaWindowActor *self
 ClutterActor *     meta_window_actor_get_texture          (MetaWindowActor *self);
 gboolean       meta_window_actor_is_destroyed (MetaWindowActor *self);

+typedef enum {
+  META_SHADOW_MODE_AUTO,
+  META_SHADOW_MODE_FORCED_OFF,
+  META_SHADOW_MODE_FORCED_ON,
+} MetaShadowMode;
+
 #endif /* META_WINDOW_ACTOR_H */
--- a/src/compositor/meta-window-shape.h
+++ b/src/compositor/meta-window-shape.h
@@ -24,7 +24,9 @@
 #define __META_WINDOW_SHAPE_H__

 #include <cairo.h>
-#include <glib.h>
+#include <glib-object.h>
+
+GType meta_window_shape_get_type (void) G_GNUC_CONST;

 /**
 * MetaWindowShape:
--- a/src/meta/screen.h
+++ b/src/meta/screen.h
@@ -66,6 +66,21 @@ int meta_screen_get_active_workspace_index (MetaScreen *screen);

 MetaWorkspace * meta_screen_get_active_workspace (MetaScreen *screen);

+/**
+ * MetaScreenDirection:
+ * @META_SCREEN_UP: up
+ * @META_SCREEN_DOWN: down
+ * @META_SCREEN_LEFT: left
+ * @META_SCREEN_RIGHT: right
+ */
+typedef enum
+{
+  META_SCREEN_UP,
+  META_SCREEN_DOWN,
+  META_SCREEN_LEFT,
+  META_SCREEN_RIGHT
+} MetaScreenDirection;
+
 int  meta_screen_get_n_monitors       (MetaScreen    *screen);
 int  meta_screen_get_primary_monitor  (MetaScreen    *screen);
 int  meta_screen_get_current_monitor  (MetaScreen    *screen);
@@ -82,6 +97,10 @@ gboolean meta_screen_get_monitor_in_fullscreen (MetaScreen  *screen,
 int meta_screen_get_monitor_index_for_rect (MetaScreen    *screen,
                                            MetaRectangle *rect);

+int meta_screen_get_monitor_neighbor_index (MetaScreen *screen,
+                                            int         which_monitor,
+                                            MetaScreenDirection dir);
+
 void meta_screen_focus_default_window (MetaScreen *screen,
                                       guint32     timestamp);

--- a/src/stamp-mutter-enum-types.h
+++ b/src/stamp-mutter-enum-types.h
@@ -0,0 +1 @@
+timestamp
--- a/src/ui/frames.c
+++ b/src/ui/frames.c
@@ -1053,6 +1053,11 @@ meta_frame_left_click_event (MetaUIFrame *frame,
      }

      return TRUE;
+    case META_FRAME_CONTROL_NONE:
+      /* We can get this for example when trying to resize window
+       * that cannot be resized (e. g. it is maximized and the theme
+       * currently used has borders for maximized windows), see #751884 */
+      return FALSE;
    default:
      g_assert_not_reached ();
    }
--- a/src/ui/frames.h
+++ b/src/ui/frames.h
@@ -27,6 +27,7 @@
 #include <meta/common.h>
 #include <meta/types.h>
 #include "theme-private.h"
+#include "ui.h"

 typedef enum
 {
@@ -69,8 +70,6 @@ typedef enum
 typedef struct _MetaFrames        MetaFrames;
 typedef struct _MetaFramesClass   MetaFramesClass;

-typedef struct _MetaUIFrame         MetaUIFrame;
-
 struct _MetaUIFrame
 {
  MetaFrames *frames;
--- a/src/ui/theme-private.h
+++ b/src/ui/theme-private.h
@@ -115,7 +115,7 @@ struct _MetaFrameGeometry

  /* used for a memset hack */
 #define ADDRESS_OF_BUTTON_RECTS(fgeom) (((char*)(fgeom)) + G_STRUCT_OFFSET (MetaFrameGeometry, close_rect))
-#define LENGTH_OF_BUTTON_RECTS (G_STRUCT_OFFSET (MetaFrameGeometry, unstick_rect) + sizeof (GdkRectangle) - G_STRUCT_OFFSET (MetaFrameGeometry, close_rect))
+#define LENGTH_OF_BUTTON_RECTS (G_STRUCT_OFFSET (MetaFrameGeometry, unstick_rect) + sizeof (MetaButtonSpace) - G_STRUCT_OFFSET (MetaFrameGeometry, close_rect))

  /* The button rects (if changed adjust memset hack) */
  MetaButtonSpace close_rect;
--- a/src/ui/theme.c
+++ b/src/ui/theme.c
@@ -121,7 +121,7 @@ meta_frame_layout_get_borders (const MetaFrameLayout *layout,
 }

 int
-meta_theme_get_window_scaling_factor ()
+meta_theme_get_window_scaling_factor (void)
 {
  GdkScreen *screen;
  GValue value = G_VALUE_INIT;
--- a/src/wayland/meta-wayland-data-device-private.h
+++ b/src/wayland/meta-wayland-data-device-private.h
@@ -0,0 +1,34 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/*
+ * Copyright (C) 2015 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:
+ *     Jonas Ådahl <jadahl@gmail.com>
+ */
+
+#ifndef META_WAYLAND_DATA_DEVICE_PRIVATE_H
+#define META_WAYLAND_DATA_DEVICE_PRIVATE_H
+
+#define META_TYPE_WAYLAND_DATA_SOURCE_WAYLAND (meta_wayland_data_source_wayland_get_type ())
+G_DECLARE_FINAL_TYPE (MetaWaylandDataSourceWayland,
+                      meta_wayland_data_source_wayland,
+                      META, WAYLAND_DATA_SOURCE_WAYLAND,
+                      MetaWaylandDataSource);
+
+#endif /* META_WAYLAND_DATA_DEVICE_PRIVATE_H */
--- a/src/wayland/meta-wayland-data-device.c
+++ b/src/wayland/meta-wayland-data-device.c
@@ -31,24 +31,44 @@
 #include <glib.h>

 #include "meta-wayland-data-device.h"
+#include "meta-wayland-data-device-private.h"
 #include "meta-wayland-seat.h"
 #include "meta-wayland-pointer.h"
 #include "meta-wayland-private.h"
 #include "meta-dnd-actor-private.h"

-typedef struct
+struct _MetaWaylandDataOffer
 {
  struct wl_resource *resource;
  MetaWaylandDataSource *source;
  struct wl_listener source_destroy_listener;
-} MetaWaylandDataOffer;
+};

-struct _MetaWaylandDataSource
+typedef struct _MetaWaylandDataSourcePrivate
 {
-  struct wl_resource *resource;
  struct wl_array mime_types;
  gboolean has_target;
-};
+} MetaWaylandDataSourcePrivate;
+
+typedef struct _MetaWaylandDataSourceWayland
+{
+  MetaWaylandDataSource parent;
+
+  struct wl_resource *resource;
+} MetaWaylandDataSourceWayland;
+
+GType meta_wayland_data_source_wayland_get_type (void) G_GNUC_CONST;
+
+G_DEFINE_TYPE_WITH_PRIVATE (MetaWaylandDataSource, meta_wayland_data_source,
+                            G_TYPE_OBJECT);
+G_DEFINE_TYPE (MetaWaylandDataSourceWayland, meta_wayland_data_source_wayland,
+               META_TYPE_WAYLAND_DATA_SOURCE);
+
+static MetaWaylandDataSource *
+meta_wayland_data_source_wayland_new (struct wl_resource *resource);
+
+static void
+drag_grab_data_source_destroyed (gpointer data, GObject *where_the_object_was);

 static void
 unbind_resource (struct wl_resource *resource)
@@ -56,6 +76,55 @@ unbind_resource (struct wl_resource *resource)
  wl_list_remove (wl_resource_get_link (resource));
 }

+static void
+meta_wayland_data_source_target (MetaWaylandDataSource *source,
+                                 const char *mime_type)
+{
+  META_WAYLAND_DATA_SOURCE_GET_CLASS (source)->target (source, mime_type);
+}
+
+void
+meta_wayland_data_source_send (MetaWaylandDataSource *source,
+                               const char *mime_type,
+                               int fd)
+{
+  META_WAYLAND_DATA_SOURCE_GET_CLASS (source)->send (source, mime_type, fd);
+}
+
+gboolean
+meta_wayland_data_source_has_target (MetaWaylandDataSource *source)
+{
+  MetaWaylandDataSourcePrivate *priv =
+    meta_wayland_data_source_get_instance_private (source);
+
+  return priv->has_target;
+}
+
+void
+meta_wayland_data_source_set_has_target (MetaWaylandDataSource *source,
+                                         gboolean has_target)
+{
+  MetaWaylandDataSourcePrivate *priv =
+    meta_wayland_data_source_get_instance_private (source);
+
+  priv->has_target = has_target;
+}
+
+struct wl_array *
+meta_wayland_data_source_get_mime_types (const MetaWaylandDataSource *source)
+{
+  MetaWaylandDataSourcePrivate *priv =
+    meta_wayland_data_source_get_instance_private (source);
+
+  return &priv->mime_types;
+}
+
+static void
+meta_wayland_data_source_cancel (MetaWaylandDataSource *source)
+{
+  META_WAYLAND_DATA_SOURCE_GET_CLASS (source)->cancel (source);
+}
+
 static void
 data_offer_accept (struct wl_client *client,
                   struct wl_resource *resource,
@@ -70,8 +139,9 @@ data_offer_accept (struct wl_client *client,

  if (offer->source)
    {
-      wl_data_source_send_target (offer->source->resource, mime_type);
-      offer->source->has_target = mime_type != NULL;
+      meta_wayland_data_source_target (offer->source, mime_type);
+      meta_wayland_data_source_set_has_target (offer->source,
+                                               mime_type != NULL);
    }
 }

@@ -82,9 +152,9 @@ data_offer_receive (struct wl_client *client, struct wl_resource *resource,
  MetaWaylandDataOffer *offer = wl_resource_get_user_data (resource);

  if (offer->source)
-    wl_data_source_send_send (offer->source->resource, mime_type, fd);
-
-  close (fd);
+    meta_wayland_data_source_send (offer->source, mime_type, fd);
+  else
+    close (fd);
 }

 static void
@@ -105,38 +175,34 @@ destroy_data_offer (struct wl_resource *resource)
  MetaWaylandDataOffer *offer = wl_resource_get_user_data (resource);

  if (offer->source)
-    wl_list_remove (&offer->source_destroy_listener.link);
+    g_object_remove_weak_pointer (G_OBJECT (offer->source),
+                                  (gpointer *)&offer->source);

  g_slice_free (MetaWaylandDataOffer, offer);
 }

-static void
-destroy_offer_data_source (struct wl_listener *listener, void *data)
-{
-  MetaWaylandDataOffer *offer;
-
-  offer = wl_container_of (listener, offer, source_destroy_listener);
-
-  offer->source = NULL;
-}
-
 static struct wl_resource *
 meta_wayland_data_source_send_offer (MetaWaylandDataSource *source,
                                     struct wl_resource *target)
 {
+  MetaWaylandDataSourcePrivate *priv =
+    meta_wayland_data_source_get_instance_private (source);
  MetaWaylandDataOffer *offer = g_slice_new0 (MetaWaylandDataOffer);
  char **p;

  offer->source = source;
-  offer->source_destroy_listener.notify = destroy_offer_data_source;
-
-  offer->resource = wl_resource_create (wl_resource_get_client (target), &wl_data_offer_interface, wl_resource_get_version (target), 0);
-  wl_resource_set_implementation (offer->resource, &data_offer_interface, offer, destroy_data_offer);
-  wl_resource_add_destroy_listener (source->resource, &offer->source_destroy_listener);
+  g_object_add_weak_pointer (G_OBJECT (source), (gpointer *)&offer->source);
+  offer->resource = wl_resource_create (wl_resource_get_client (target),
+                                        &wl_data_offer_interface,
+                                        wl_resource_get_version (target), 0);
+  wl_resource_set_implementation (offer->resource,
+                                  &data_offer_interface,
+                                  offer,
+                                  destroy_data_offer);

  wl_data_device_send_data_offer (target, offer->resource);

-  wl_array_for_each (p, &source->mime_types)
+  wl_array_for_each (p, &priv->mime_types)
    wl_data_offer_send_offer (offer->resource, *p);

  return offer->resource;
@@ -147,12 +213,8 @@ data_source_offer (struct wl_client *client,
                   struct wl_resource *resource, const char *type)
 {
  MetaWaylandDataSource *source = wl_resource_get_user_data (resource);
-  char **p;

-  p = wl_array_add (&source->mime_types, sizeof *p);
-  if (p)
-    *p = strdup (type);
-  if (!p || !*p)
+  if (!meta_wayland_data_source_add_mime_type (source, type))
    wl_resource_post_no_memory (resource);
 }

@@ -181,7 +243,6 @@ struct _MetaWaylandDragGrab {
  struct wl_listener      drag_icon_listener;

  MetaWaylandDataSource  *drag_data_source;
-  struct wl_listener      drag_data_source_listener;

  ClutterActor           *feedback_actor;

@@ -199,26 +260,20 @@ destroy_drag_focus (struct wl_listener *listener, void *data)
  grab->drag_focus_data_device = NULL;
 }

-static void
-drag_grab_focus (MetaWaylandPointerGrab *grab,
-                 MetaWaylandSurface     *surface)
+void
+meta_wayland_drag_grab_set_focus (MetaWaylandDragGrab *drag_grab,
+                                  MetaWaylandSurface  *surface)
 {
-  MetaWaylandDragGrab *drag_grab = (MetaWaylandDragGrab*) grab;
  MetaWaylandSeat *seat = drag_grab->seat;
  struct wl_client *client;
  struct wl_resource *data_device_resource, *offer = NULL;
-  struct wl_display *display;
-  guint32 serial;
-  wl_fixed_t sx, sy;

  if (drag_grab->drag_focus == surface)
    return;

-  if (drag_grab->drag_focus_data_device)
+  if (drag_grab->drag_focus)
    {
-      wl_data_device_send_leave (drag_grab->drag_focus_data_device);
-      wl_list_remove (&drag_grab->drag_focus_listener.link);
-      drag_grab->drag_focus_data_device = NULL;
+      meta_wayland_surface_drag_dest_focus_out (drag_grab->drag_focus);
      drag_grab->drag_focus = NULL;
    }

@@ -232,25 +287,31 @@ drag_grab_focus (MetaWaylandPointerGrab *grab,
  client = wl_resource_get_client (surface->resource);

  data_device_resource = wl_resource_find_for_client (&seat->data_device.resource_list, client);
-  if (!data_device_resource)
-    return;

-  display = wl_client_get_display (client);
-  serial = wl_display_next_serial (display);
-
-  if (drag_grab->drag_data_source)
+  if (drag_grab->drag_data_source && data_device_resource)
    offer = meta_wayland_data_source_send_offer (drag_grab->drag_data_source,
                                                 data_device_resource);

-  meta_wayland_pointer_get_relative_coordinates (grab->pointer, surface, &sx, &sy);
-  wl_data_device_send_enter (data_device_resource, serial, surface->resource,
-                             sx, sy, offer);
-
  drag_grab->drag_focus = surface;
-
  drag_grab->drag_focus_data_device = data_device_resource;
-  drag_grab->drag_focus_listener.notify = destroy_drag_focus;
-  wl_resource_add_destroy_listener (data_device_resource, &drag_grab->drag_focus_listener);
+
+  meta_wayland_surface_drag_dest_focus_in (drag_grab->drag_focus,
+                                           offer ? wl_resource_get_user_data (offer) : NULL);
+}
+
+MetaWaylandSurface *
+meta_wayland_drag_grab_get_focus (MetaWaylandDragGrab *drag_grab)
+{
+  return drag_grab->drag_focus;
+}
+
+static void
+drag_grab_focus (MetaWaylandPointerGrab *grab,
+                 MetaWaylandSurface     *surface)
+{
+  MetaWaylandDragGrab *drag_grab = (MetaWaylandDragGrab*) grab;
+
+  meta_wayland_drag_grab_set_focus (drag_grab, surface);
 }

 static void
@@ -258,17 +319,9 @@ drag_grab_motion (MetaWaylandPointerGrab *grab,
 		  const ClutterEvent     *event)
 {
  MetaWaylandDragGrab *drag_grab = (MetaWaylandDragGrab*) grab;
-  wl_fixed_t sx, sy;

-  if (drag_grab->drag_focus_data_device)
-    {
-      meta_wayland_pointer_get_relative_coordinates (grab->pointer,
-						     drag_grab->drag_focus,
-						     &sx, &sy);
-      wl_data_device_send_motion (drag_grab->drag_focus_data_device,
-				  clutter_event_get_time (event),
-				  sx, sy);
-    }
+  if (drag_grab->drag_focus)
+    meta_wayland_surface_drag_dest_motion (drag_grab->drag_focus, event);

  if (drag_grab->drag_surface)
    meta_feedback_actor_update (META_FEEDBACK_ACTOR (drag_grab->feedback_actor),
@@ -278,6 +331,8 @@ drag_grab_motion (MetaWaylandPointerGrab *grab,
 static void
 data_device_end_drag_grab (MetaWaylandDragGrab *drag_grab)
 {
+  meta_wayland_drag_grab_set_focus (drag_grab, NULL);
+
  if (drag_grab->drag_origin)
    {
      drag_grab->drag_origin = NULL;
@@ -291,10 +346,9 @@ data_device_end_drag_grab (MetaWaylandDragGrab *drag_grab)
    }

  if (drag_grab->drag_data_source)
-    {
-      drag_grab->drag_data_source->has_target = FALSE;
-      wl_list_remove (&drag_grab->drag_data_source_listener.link);
-    }
+    g_object_weak_unref (G_OBJECT (drag_grab->drag_data_source),
+                         drag_grab_data_source_destroyed,
+                         drag_grab);

  if (drag_grab->feedback_actor)
    {
@@ -304,8 +358,6 @@ data_device_end_drag_grab (MetaWaylandDragGrab *drag_grab)

  drag_grab->seat->data_device.current_grab = NULL;

-  drag_grab_focus (&drag_grab->generic, NULL);
-
  meta_wayland_pointer_end_grab (drag_grab->generic.pointer);
  g_slice_free (MetaWaylandDragGrab, drag_grab);
 }
@@ -323,10 +375,9 @@ drag_grab_button (MetaWaylandPointerGrab *grab,
    {
      gboolean success = FALSE;

-      if (drag_grab->drag_focus_data_device &&
-          drag_grab->drag_data_source->has_target)
+      if (meta_wayland_data_source_has_target (drag_grab->drag_data_source))
        {
-          wl_data_device_send_drop (drag_grab->drag_focus_data_device);
+          meta_wayland_surface_drag_dest_drop (drag_grab->drag_focus);
          success = TRUE;
        }

@@ -355,23 +406,24 @@ destroy_data_device_origin (struct wl_listener *listener, void *data)

  drag_grab->drag_origin = NULL;
  data_device_end_drag_grab (drag_grab);
+  meta_wayland_data_device_set_dnd_source (&drag_grab->seat->data_device, NULL);
 }

 static void
-destroy_data_device_source (struct wl_listener *listener, void *data)
+drag_grab_data_source_destroyed (gpointer data, GObject *where_the_object_was)
 {
-  MetaWaylandDragGrab *drag_grab =
-    wl_container_of (listener, drag_grab, drag_data_source_listener);
+  MetaWaylandDragGrab *drag_grab = data;

  drag_grab->drag_data_source = NULL;
  data_device_end_drag_grab (drag_grab);
+  meta_wayland_data_device_set_dnd_source (&drag_grab->seat->data_device, NULL);
 }

 static void
 destroy_data_device_icon (struct wl_listener *listener, void *data)
 {
  MetaWaylandDragGrab *drag_grab =
-    wl_container_of (listener, drag_grab, drag_data_source_listener);
+    wl_container_of (listener, drag_grab, drag_icon_listener);

  drag_grab->drag_surface = NULL;

@@ -379,6 +431,76 @@ destroy_data_device_icon (struct wl_listener *listener, void *data)
    clutter_actor_remove_all_children (drag_grab->feedback_actor);
 }

+void
+meta_wayland_data_device_start_drag (MetaWaylandDataDevice                 *data_device,
+                                     struct wl_client                      *client,
+                                     const MetaWaylandPointerGrabInterface *funcs,
+                                     MetaWaylandSurface                    *surface,
+                                     MetaWaylandDataSource                 *source,
+                                     MetaWaylandSurface                    *icon_surface)
+{
+  MetaWaylandSeat *seat = wl_container_of (data_device, seat, data_device);
+  MetaWaylandDragGrab *drag_grab;
+  ClutterPoint pos, stage_pos;
+
+  data_device->current_grab = drag_grab = g_slice_new0 (MetaWaylandDragGrab);
+
+  drag_grab->generic.interface = funcs;
+  drag_grab->generic.pointer = &seat->pointer;
+
+  drag_grab->drag_client = client;
+  drag_grab->seat = seat;
+
+  drag_grab->drag_origin = surface;
+  drag_grab->drag_origin_listener.notify = destroy_data_device_origin;
+  wl_resource_add_destroy_listener (surface->resource,
+                                    &drag_grab->drag_origin_listener);
+
+  clutter_input_device_get_coords (seat->pointer.device, NULL, &pos);
+  clutter_actor_transform_stage_point (CLUTTER_ACTOR (meta_surface_actor_get_texture (surface->surface_actor)),
+                                       pos.x, pos.y, &stage_pos.x, &stage_pos.y);
+  drag_grab->drag_start_x = stage_pos.x;
+  drag_grab->drag_start_y = stage_pos.y;
+
+  g_object_weak_ref (G_OBJECT (source),
+                     drag_grab_data_source_destroyed,
+                     drag_grab);
+
+  drag_grab->drag_data_source = source;
+  meta_wayland_data_device_set_dnd_source (data_device,
+                                           drag_grab->drag_data_source);
+
+  if (icon_surface)
+    {
+      drag_grab->drag_surface = icon_surface;
+
+      drag_grab->drag_icon_listener.notify = destroy_data_device_icon;
+      wl_resource_add_destroy_listener (icon_surface->resource,
+                                        &drag_grab->drag_icon_listener);
+
+      drag_grab->feedback_actor = meta_dnd_actor_new (CLUTTER_ACTOR (drag_grab->drag_origin->surface_actor),
+                                                      drag_grab->drag_start_x,
+                                                      drag_grab->drag_start_y);
+      meta_feedback_actor_set_anchor (META_FEEDBACK_ACTOR (drag_grab->feedback_actor),
+                                      -drag_grab->drag_surface->offset_x,
+                                      -drag_grab->drag_surface->offset_y);
+      clutter_actor_add_child (drag_grab->feedback_actor,
+                               CLUTTER_ACTOR (drag_grab->drag_surface->surface_actor));
+
+      meta_feedback_actor_set_position (META_FEEDBACK_ACTOR (drag_grab->feedback_actor),
+                                        pos.x, pos.y);
+    }
+
+  meta_wayland_pointer_start_grab (&seat->pointer, (MetaWaylandPointerGrab*) drag_grab);
+}
+
+void
+meta_wayland_data_device_end_drag (MetaWaylandDataDevice *data_device)
+{
+  if (data_device->current_grab)
+    data_device_end_drag_grab (data_device->current_grab);
+}
+
 static void
 data_device_start_drag (struct wl_client *client,
                        struct wl_resource *resource,
@@ -388,9 +510,8 @@ data_device_start_drag (struct wl_client *client,
 {
  MetaWaylandDataDevice *data_device = wl_resource_get_user_data (resource);
  MetaWaylandSeat *seat = wl_container_of (data_device, seat, data_device);
-  MetaWaylandSurface *surface = NULL;
-  MetaWaylandDragGrab *drag_grab;
-  ClutterPoint pos;
+  MetaWaylandSurface *surface = NULL, *icon_surface = NULL;
+  MetaWaylandDataSource *drag_source = NULL;

  if (origin_resource)
    surface = wl_resource_get_user_data (origin_resource);
@@ -410,69 +531,28 @@ data_device_start_drag (struct wl_client *client,
      seat->pointer.grab != &seat->pointer.default_grab)
    return;

+  if (icon_resource)
+    icon_surface = wl_resource_get_user_data (icon_resource);
+  if (source_resource)
+    drag_source = wl_resource_get_user_data (source_resource);
+
  if (icon_resource &&
-      meta_wayland_surface_set_role (wl_resource_get_user_data (icon_resource),
+      meta_wayland_surface_set_role (icon_surface,
                                     META_WAYLAND_SURFACE_ROLE_DND,
                                     resource,
                                     WL_DATA_DEVICE_ERROR_ROLE) != 0)
    return;

-  data_device->current_grab = drag_grab = g_slice_new0 (MetaWaylandDragGrab);
-
-  drag_grab->generic.interface = &drag_grab_interface;
-  drag_grab->generic.pointer = &seat->pointer;
-
-  drag_grab->drag_client = client;
-  drag_grab->seat = seat;
-
-  drag_grab->drag_origin = surface;
-  drag_grab->drag_origin_listener.notify = destroy_data_device_origin;
-  wl_resource_add_destroy_listener (origin_resource,
-                                    &drag_grab->drag_origin_listener);
-
-  clutter_input_device_get_coords (seat->pointer.device, NULL, &pos);
-  clutter_actor_transform_stage_point (CLUTTER_ACTOR (meta_surface_actor_get_texture (surface->surface_actor)),
-                                       pos.x, pos.y, &pos.x, &pos.y);
-  drag_grab->drag_start_x = pos.x;
-  drag_grab->drag_start_y = pos.y;
-
-  if (source_resource)
-    {
-      drag_grab->drag_data_source = wl_resource_get_user_data (source_resource);
-      drag_grab->drag_data_source_listener.notify = destroy_data_device_source;
-      wl_resource_add_destroy_listener (source_resource,
-                                        &drag_grab->drag_data_source_listener);
-    }
-
-  if (icon_resource)
-    {
-      drag_grab->drag_surface = wl_resource_get_user_data (icon_resource);
-      drag_grab->drag_icon_listener.notify = destroy_data_device_icon;
-      wl_resource_add_destroy_listener (icon_resource,
-                                        &drag_grab->drag_icon_listener);
-
-      drag_grab->feedback_actor = meta_dnd_actor_new (CLUTTER_ACTOR (drag_grab->drag_origin->surface_actor),
-                                                      drag_grab->drag_start_x,
-                                                      drag_grab->drag_start_y);
-      meta_feedback_actor_set_anchor (META_FEEDBACK_ACTOR (drag_grab->feedback_actor),
-                                      -drag_grab->drag_surface->offset_x,
-                                      -drag_grab->drag_surface->offset_y);
-      clutter_actor_add_child (drag_grab->feedback_actor,
-                               CLUTTER_ACTOR (drag_grab->drag_surface->surface_actor));
-
-      clutter_input_device_get_coords (seat->pointer.device, NULL, &pos);
-      meta_feedback_actor_set_position (META_FEEDBACK_ACTOR (drag_grab->feedback_actor),
-                                        pos.x, pos.y);
-    }
-
  meta_wayland_pointer_set_focus (&seat->pointer, NULL);
-  meta_wayland_pointer_start_grab (&seat->pointer, (MetaWaylandPointerGrab*)drag_grab);
+  meta_wayland_data_device_start_drag (data_device, client,
+                                       &drag_grab_interface,
+                                       surface, drag_source, icon_surface);
 }

 static void
-destroy_selection_data_source (struct wl_listener *listener, void *data)
+selection_data_source_destroyed (gpointer data, GObject *object_was_here)
 {
-  MetaWaylandDataDevice *data_device = wl_container_of (listener, data_device, selection_data_source_listener);
+  MetaWaylandDataDevice *data_device = data;
  MetaWaylandSeat *seat = wl_container_of (data_device, seat, data_device);
  struct wl_resource *data_device_resource;
  struct wl_client *focus_client = NULL;
@@ -489,6 +569,190 @@ destroy_selection_data_source (struct wl_listener *listener, void *data)
 }

 static void
+meta_wayland_source_send (MetaWaylandDataSource *source,
+                          const gchar           *mime_type,
+                          gint                   fd)
+{
+  MetaWaylandDataSourceWayland *source_wayland =
+    META_WAYLAND_DATA_SOURCE_WAYLAND (source);
+
+  wl_data_source_send_send (source_wayland->resource, mime_type, fd);
+  close (fd);
+}
+
+static void
+meta_wayland_source_target (MetaWaylandDataSource *source,
+                            const gchar           *mime_type)
+{
+  MetaWaylandDataSourceWayland *source_wayland =
+    META_WAYLAND_DATA_SOURCE_WAYLAND (source);
+
+  wl_data_source_send_target (source_wayland->resource, mime_type);
+}
+
+static void
+meta_wayland_source_cancel (MetaWaylandDataSource *source)
+{
+  MetaWaylandDataSourceWayland *source_wayland =
+    META_WAYLAND_DATA_SOURCE_WAYLAND (source);
+
+  wl_data_source_send_cancelled (source_wayland->resource);
+}
+
+static void
+meta_wayland_source_finalize (GObject *object)
+{
+  G_OBJECT_CLASS (meta_wayland_data_source_parent_class)->finalize (object);
+}
+
+static void
+meta_wayland_data_source_wayland_init (MetaWaylandDataSourceWayland *source_wayland)
+{
+}
+
+static void
+meta_wayland_data_source_wayland_class_init (MetaWaylandDataSourceWaylandClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+  MetaWaylandDataSourceClass *data_source_class =
+    META_WAYLAND_DATA_SOURCE_CLASS (klass);
+
+  object_class->finalize = meta_wayland_source_finalize;
+
+  data_source_class->send = meta_wayland_source_send;
+  data_source_class->target = meta_wayland_source_target;
+  data_source_class->cancel = meta_wayland_source_cancel;
+}
+
+static void
+meta_wayland_data_source_finalize (GObject *object)
+{
+  MetaWaylandDataSource *source = META_WAYLAND_DATA_SOURCE (object);
+  MetaWaylandDataSourcePrivate *priv =
+    meta_wayland_data_source_get_instance_private (source);
+  char **pos;
+
+  wl_array_for_each (pos, &priv->mime_types)
+    g_free (*pos);
+  wl_array_release (&priv->mime_types);
+
+  G_OBJECT_CLASS (meta_wayland_data_source_parent_class)->finalize (object);
+}
+
+static void
+meta_wayland_data_source_init (MetaWaylandDataSource *source)
+{
+  MetaWaylandDataSourcePrivate *priv =
+    meta_wayland_data_source_get_instance_private (source);
+
+  wl_array_init (&priv->mime_types);
+}
+
+static void
+meta_wayland_data_source_class_init (MetaWaylandDataSourceClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->finalize = meta_wayland_data_source_finalize;
+}
+
+static void
+meta_wayland_drag_dest_focus_in (MetaWaylandDataDevice *data_device,
+                                 MetaWaylandSurface    *surface,
+                                 MetaWaylandDataOffer  *offer)
+{
+  MetaWaylandDragGrab *grab = data_device->current_grab;
+  struct wl_display *display;
+  struct wl_client *client;
+  wl_fixed_t sx, sy;
+
+  if (!grab->drag_focus_data_device)
+    return;
+
+  client = wl_resource_get_client (surface->resource);
+  display = wl_client_get_display (client);
+
+  grab->drag_focus_listener.notify = destroy_drag_focus;
+  wl_resource_add_destroy_listener (grab->drag_focus_data_device,
+                                    &grab->drag_focus_listener);
+
+  meta_wayland_pointer_get_relative_coordinates (grab->generic.pointer,
+                                                 surface, &sx, &sy);
+  wl_data_device_send_enter (grab->drag_focus_data_device,
+                             wl_display_next_serial (display),
+                             surface->resource, sx, sy, offer->resource);
+}
+
+static void
+meta_wayland_drag_dest_focus_out (MetaWaylandDataDevice *data_device,
+                                  MetaWaylandSurface    *surface)
+{
+  MetaWaylandDragGrab *grab = data_device->current_grab;
+
+  if (grab->drag_focus_data_device)
+    wl_data_device_send_leave (grab->drag_focus_data_device);
+
+  wl_list_remove (&grab->drag_focus_listener.link);
+  grab->drag_focus_data_device = NULL;
+}
+
+static void
+meta_wayland_drag_dest_motion (MetaWaylandDataDevice *data_device,
+                               MetaWaylandSurface    *surface,
+                               const ClutterEvent    *event)
+{
+  MetaWaylandDragGrab *grab = data_device->current_grab;
+  wl_fixed_t sx, sy;
+
+  meta_wayland_pointer_get_relative_coordinates (grab->generic.pointer,
+                                                 grab->drag_focus,
+                                                 &sx, &sy);
+  wl_data_device_send_motion (grab->drag_focus_data_device,
+                              clutter_event_get_time (event),
+                              sx, sy);
+}
+
+static void
+meta_wayland_drag_dest_drop (MetaWaylandDataDevice *data_device,
+                             MetaWaylandSurface    *surface)
+{
+  MetaWaylandDragGrab *grab = data_device->current_grab;
+
+  wl_data_device_send_drop (grab->drag_focus_data_device);
+}
+
+static const MetaWaylandDragDestFuncs meta_wayland_drag_dest_funcs = {
+  meta_wayland_drag_dest_focus_in,
+  meta_wayland_drag_dest_focus_out,
+  meta_wayland_drag_dest_motion,
+  meta_wayland_drag_dest_drop
+};
+
+const MetaWaylandDragDestFuncs *
+meta_wayland_data_device_get_drag_dest_funcs (void)
+{
+  return &meta_wayland_drag_dest_funcs;
+}
+
+void
+meta_wayland_data_device_set_dnd_source (MetaWaylandDataDevice *data_device,
+                                         MetaWaylandDataSource *source)
+{
+  if (data_device->dnd_data_source == source)
+    return;
+
+  if (data_device->dnd_data_source)
+    g_object_remove_weak_pointer (G_OBJECT (source),
+                                  (gpointer *)&data_device->dnd_data_source);
+
+  data_device->dnd_data_source = source;
+  g_object_add_weak_pointer (G_OBJECT (source),
+                             (gpointer *)&data_device->dnd_data_source);
+
+  wl_signal_emit (&data_device->dnd_ownership_signal, source);
+}
+
+void
 meta_wayland_data_device_set_selection (MetaWaylandDataDevice *data_device,
                                        MetaWaylandDataSource *source,
                                        guint32 serial)
@@ -503,8 +767,10 @@ meta_wayland_data_device_set_selection (MetaWaylandDataDevice *data_device,

  if (data_device->selection_data_source)
    {
-      wl_data_source_send_cancelled (data_device->selection_data_source->resource);
-      wl_list_remove (&data_device->selection_data_source_listener.link);
+      meta_wayland_data_source_cancel (data_device->selection_data_source);
+      g_object_weak_unref (G_OBJECT (data_device->selection_data_source),
+                           selection_data_source_destroyed,
+                           data_device);
      data_device->selection_data_source = NULL;
    }

@@ -531,9 +797,12 @@ meta_wayland_data_device_set_selection (MetaWaylandDataDevice *data_device,

  if (source)
    {
-      data_device->selection_data_source_listener.notify = destroy_selection_data_source;
-      wl_resource_add_destroy_listener (source->resource, &data_device->selection_data_source_listener);
+      g_object_weak_ref (G_OBJECT (source),
+                         selection_data_source_destroyed,
+                         data_device);
    }
+
+  wl_signal_emit (&data_device->selection_ownership_signal, source);
 }

 static void
@@ -545,10 +814,10 @@ data_device_set_selection (struct wl_client *client,
  MetaWaylandDataDevice *data_device = wl_resource_get_user_data (resource);
  MetaWaylandDataSource *source;

-  if (!source_resource)
-    return;
-
-  source = wl_resource_get_user_data (source_resource);
+  if (source_resource)
+    source = wl_resource_get_user_data (source_resource);
+  else
+    source = NULL;

  /* FIXME: Store serial and check against incoming serial here. */
  meta_wayland_data_device_set_selection (data_device, source, serial);
@@ -569,26 +838,21 @@ static const struct wl_data_device_interface data_device_interface = {
 static void
 destroy_data_source (struct wl_resource *resource)
 {
-  MetaWaylandDataSource *source = wl_resource_get_user_data (resource);
-  char **p;
+  MetaWaylandDataSourceWayland *source = wl_resource_get_user_data (resource);

-  wl_array_for_each (p, &source->mime_types) free (*p);
-
-  wl_array_release (&source->mime_types);
-
-  g_slice_free (MetaWaylandDataSource, source);
+  source->resource = NULL;
+  g_object_unref (source);
 }

 static void
 create_data_source (struct wl_client *client,
                    struct wl_resource *resource, guint32 id)
 {
-  MetaWaylandDataSource *source = g_slice_new0 (MetaWaylandDataSource);
+  struct wl_resource *source_resource;

-  source->resource = wl_resource_create (client, &wl_data_source_interface, wl_resource_get_version (resource), id);
-  wl_resource_set_implementation (source->resource, &data_source_interface, source, destroy_data_source);
-
-  wl_array_init (&source->mime_types);
+  source_resource = wl_resource_create (client, &wl_data_source_interface,
+                                        wl_resource_get_version (resource), id);
+  meta_wayland_data_source_wayland_new (source_resource);
 }

 static void
@@ -632,6 +896,8 @@ void
 meta_wayland_data_device_init (MetaWaylandDataDevice *data_device)
 {
  wl_list_init (&data_device->resource_list);
+  wl_signal_init (&data_device->selection_ownership_signal);
+  wl_signal_init (&data_device->dnd_ownership_signal);
 }

 void
@@ -656,6 +922,8 @@ meta_wayland_data_device_set_keyboard_focus (MetaWaylandDataDevice *data_device)
      offer = meta_wayland_data_source_send_offer (source, data_device_resource);
      wl_data_device_send_selection (data_device_resource, offer);
    }
+  else
+    wl_data_device_send_selection (data_device_resource, NULL);
 }

 gboolean
@@ -683,3 +951,52 @@ meta_wayland_data_device_update_dnd_surface (MetaWaylandDataDevice *data_device)
                                  -drag_grab->drag_surface->offset_x,
                                  -drag_grab->drag_surface->offset_y);
 }
+
+gboolean
+meta_wayland_data_source_has_mime_type (const MetaWaylandDataSource *source,
+                                        const gchar                 *mime_type)
+{
+  MetaWaylandDataSourcePrivate *priv =
+    meta_wayland_data_source_get_instance_private (source);
+  gchar **p;
+
+  wl_array_for_each (p, &priv->mime_types)
+    {
+      if (g_strcmp0 (mime_type, *p) == 0)
+        return TRUE;
+    }
+
+  return FALSE;
+}
+
+static MetaWaylandDataSource *
+meta_wayland_data_source_wayland_new (struct wl_resource *resource)
+{
+  MetaWaylandDataSourceWayland *source_wayland =
+   g_object_new (META_TYPE_WAYLAND_DATA_SOURCE_WAYLAND, NULL);
+
+  source_wayland->resource = resource;
+  wl_resource_set_implementation (resource, &data_source_interface,
+                                  source_wayland, destroy_data_source);
+
+  return META_WAYLAND_DATA_SOURCE (source_wayland);
+}
+
+gboolean
+meta_wayland_data_source_add_mime_type (MetaWaylandDataSource *source,
+                                        const gchar           *mime_type)
+{
+  MetaWaylandDataSourcePrivate *priv =
+    meta_wayland_data_source_get_instance_private (source);
+  gchar **pos;
+
+  pos = wl_array_add (&priv->mime_types, sizeof (*pos));
+
+  if (pos)
+    {
+      *pos = g_strdup (mime_type);
+      return *pos != NULL;
+    }
+
+  return FALSE;
+}
--- a/src/wayland/meta-wayland-data-device.h
+++ b/src/wayland/meta-wayland-data-device.h
@@ -24,20 +24,44 @@
 #define META_WAYLAND_DATA_DEVICE_H

 #include <wayland-server.h>
+#include <glib-object.h>

 #include "meta-wayland-types.h"

 typedef struct _MetaWaylandDragGrab MetaWaylandDragGrab;
+typedef struct _MetaWaylandDataSourceFuncs MetaWaylandDataSourceFuncs;
+
+#define META_TYPE_WAYLAND_DATA_SOURCE (meta_wayland_data_source_get_type ())
+G_DECLARE_DERIVABLE_TYPE (MetaWaylandDataSource, meta_wayland_data_source,
+                          META, WAYLAND_DATA_SOURCE, GObject);
+
+struct _MetaWaylandDataSourceClass
+{
+  GObjectClass parent_class;
+
+  void (* send)    (MetaWaylandDataSource *source,
+                    const gchar           *mime_type,
+                    gint                   fd);
+  void (* target)  (MetaWaylandDataSource *source,
+                    const gchar           *mime_type);
+  void (* cancel)  (MetaWaylandDataSource *source);
+};

 struct _MetaWaylandDataDevice
 {
  uint32_t selection_serial;
  MetaWaylandDataSource *selection_data_source;
+  MetaWaylandDataSource *dnd_data_source;
  struct wl_listener selection_data_source_listener;
  struct wl_list resource_list;
  MetaWaylandDragGrab *current_grab;
+
+  struct wl_signal selection_ownership_signal;
+  struct wl_signal dnd_ownership_signal;
 };

+GType meta_wayland_data_source_get_type (void) G_GNUC_CONST;
+
 void meta_wayland_data_device_manager_init (MetaWaylandCompositor *compositor);

 void meta_wayland_data_device_init (MetaWaylandDataDevice *data_device);
@@ -48,4 +72,45 @@ gboolean meta_wayland_data_device_is_dnd_surface (MetaWaylandDataDevice *data_de
                                                  MetaWaylandSurface    *surface);
 void meta_wayland_data_device_update_dnd_surface (MetaWaylandDataDevice *data_device);

+void meta_wayland_data_device_set_dnd_source     (MetaWaylandDataDevice *data_device,
+                                                  MetaWaylandDataSource *source);
+void meta_wayland_data_device_set_selection      (MetaWaylandDataDevice *data_device,
+                                                  MetaWaylandDataSource *source,
+                                                  guint32 serial);
+
+gboolean meta_wayland_data_source_add_mime_type  (MetaWaylandDataSource *source,
+                                                  const gchar           *mime_type);
+
+gboolean meta_wayland_data_source_has_mime_type  (const MetaWaylandDataSource *source,
+                                                  const gchar                 *mime_type);
+
+struct wl_array *
+         meta_wayland_data_source_get_mime_types (const MetaWaylandDataSource *source);
+
+gboolean meta_wayland_data_source_has_target     (MetaWaylandDataSource *source);
+
+void     meta_wayland_data_source_set_has_target (MetaWaylandDataSource *source,
+                                                  gboolean               has_target);
+
+void     meta_wayland_data_source_send           (MetaWaylandDataSource *source,
+                                                  const gchar           *mime_type,
+                                                  gint                   fd);
+
+const MetaWaylandDragDestFuncs *
+         meta_wayland_data_device_get_drag_dest_funcs (void);
+
+void     meta_wayland_data_device_start_drag     (MetaWaylandDataDevice                 *data_device,
+                                                  struct wl_client                      *client,
+                                                  const MetaWaylandPointerGrabInterface *funcs,
+                                                  MetaWaylandSurface                    *surface,
+                                                  MetaWaylandDataSource                 *source,
+                                                  MetaWaylandSurface                    *icon_surface);
+
+void     meta_wayland_data_device_end_drag       (MetaWaylandDataDevice                 *data_device);
+
+void     meta_wayland_drag_grab_set_focus        (MetaWaylandDragGrab             *drag_grab,
+                                                  MetaWaylandSurface              *surface);
+MetaWaylandSurface *
+         meta_wayland_drag_grab_get_focus        (MetaWaylandDragGrab             *drag_grab);
+
 #endif /* META_WAYLAND_DATA_DEVICE_H */
--- a/src/wayland/meta-wayland-keyboard.c
+++ b/src/wayland/meta-wayland-keyboard.c
@@ -411,6 +411,11 @@ meta_wayland_xkb_info_destroy (MetaWaylandXkbInfo *xkb_info)
 void
 meta_wayland_keyboard_release (MetaWaylandKeyboard *keyboard)
 {
+  MetaBackend *backend = meta_get_backend ();
+
+  g_signal_handlers_disconnect_by_func (backend, on_keymap_changed, keyboard);
+  g_signal_handlers_disconnect_by_func (backend, on_keymap_layout_group_changed, keyboard);
+
  meta_wayland_keyboard_set_focus (keyboard, NULL);
  meta_wayland_xkb_info_destroy (&keyboard->xkb_info);

--- a/src/wayland/meta-wayland-outputs.c
+++ b/src/wayland/meta-wayland-outputs.c
@@ -31,14 +31,15 @@

 #include <string.h>

-typedef struct {
-  MetaOutput               *output;
-  struct wl_global         *global;
-  int                       x, y;
-  enum wl_output_transform  transform;
+enum {
+  OUTPUT_DESTROYED,

-  GList                    *resources;
-} MetaWaylandOutput;
+  LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL];
+
+G_DEFINE_TYPE (MetaWaylandOutput, meta_wayland_output, G_TYPE_OBJECT)

 static void
 output_resource_destroy (struct wl_resource *res)
@@ -46,6 +47,9 @@ output_resource_destroy (struct wl_resource *res)
  MetaWaylandOutput *wayland_output;

  wayland_output = wl_resource_get_user_data (res);
+  if (!wayland_output)
+    return;
+
  wayland_output->resources = g_list_remove (wayland_output->resources, res);
 }

@@ -56,9 +60,10 @@ bind_output (struct wl_client *client,
             guint32 id)
 {
  MetaWaylandOutput *wayland_output = data;
-  MetaOutput *output = wayland_output->output;
+  MetaMonitorInfo *monitor_info = wayland_output->monitor_info;
  struct wl_resource *resource;
  guint mode_flags;
+  MetaOutput *output = monitor_info->outputs[0];

  resource = wl_resource_create (client, &wl_output_interface, version, id);
  wayland_output->resources = g_list_prepend (wayland_output->resources, resource);
@@ -66,17 +71,17 @@ bind_output (struct wl_client *client,
  wl_resource_set_user_data (resource, wayland_output);
  wl_resource_set_destructor (resource, output_resource_destroy);

-  meta_verbose ("Binding output %p/%s (%u, %u, %u, %u) x %f\n",
-                output, output->name,
-                output->crtc->rect.x, output->crtc->rect.y,
-                output->crtc->rect.width, output->crtc->rect.height,
-                output->crtc->current_mode->refresh_rate);
+  meta_verbose ("Binding monitor %p/%s (%u, %u, %u, %u) x %f\n",
+                monitor_info, output->name,
+                monitor_info->rect.x, monitor_info->rect.y,
+                monitor_info->rect.width, monitor_info->rect.height,
+                monitor_info->refresh_rate);

  wl_output_send_geometry (resource,
-                           (int)output->crtc->rect.x,
-                           (int)output->crtc->rect.y,
-                           output->width_mm,
-                           output->height_mm,
+                           (int)monitor_info->rect.x,
+                           (int)monitor_info->rect.y,
+                           monitor_info->width_mm,
+                           monitor_info->height_mm,
                           /* Cogl values reflect XRandR values,
                              and so does wayland */
                           output->subpixel_order,
@@ -92,9 +97,9 @@ bind_output (struct wl_client *client,

  wl_output_send_mode (resource,
                       mode_flags,
-                       (int)output->crtc->current_mode->width,
-                       (int)output->crtc->current_mode->height,
-                       (int)output->crtc->current_mode->refresh_rate);
+                       (int)monitor_info->rect.width,
+                       (int)monitor_info->rect.height,
+                       (int)monitor_info->refresh_rate);

  if (version >= WL_OUTPUT_SCALE_SINCE_VERSION)
    wl_output_send_scale (resource, output->scale);
@@ -107,16 +112,9 @@ static void
 wayland_output_destroy_notify (gpointer data)
 {
  MetaWaylandOutput *wayland_output = data;
-  GList *resources;

-  /* Make sure the destructors don't mess with the list */
-  resources = wayland_output->resources;
-  wayland_output->resources = NULL;
-
-  wl_global_destroy (wayland_output->global);
-  g_list_free (resources);
-
-  g_slice_free (MetaWaylandOutput, wayland_output);
+  g_signal_emit (wayland_output, signals[OUTPUT_DESTROYED], 0);
+  g_object_unref (wayland_output);
 }

 static inline enum wl_output_transform
@@ -128,14 +126,13 @@ wl_output_transform_from_meta_monitor_transform (MetaMonitorTransform transform)

 static void
 wayland_output_update_for_output (MetaWaylandOutput *wayland_output,
-                                  MetaOutput        *output)
+                                  MetaMonitorInfo *monitor_info)
 {
  GList *iter;
  guint mode_flags;
+  MetaOutput *output = monitor_info->outputs[0];
  enum wl_output_transform wl_transform = wl_output_transform_from_meta_monitor_transform (output->crtc->transform);

-  g_assert (output->crtc->current_mode != NULL);
-
  mode_flags = WL_OUTPUT_MODE_CURRENT;
  if (output->crtc->current_mode == output->preferred_mode)
    mode_flags |= WL_OUTPUT_MODE_PREFERRED;
@@ -144,15 +141,15 @@ wayland_output_update_for_output (MetaWaylandOutput *wayland_output,
    {
      struct wl_resource *resource = iter->data;

-      if (wayland_output->x != output->crtc->rect.x ||
-          wayland_output->y != output->crtc->rect.y ||
+      if (wayland_output->x != monitor_info->rect.x ||
+          wayland_output->y != monitor_info->rect.y ||
          wayland_output->transform != wl_transform)
        {
          wl_output_send_geometry (resource,
-                                   (int)output->crtc->rect.x,
-                                   (int)output->crtc->rect.y,
-                                   output->width_mm,
-                                   output->height_mm,
+                                   (int)monitor_info->rect.x,
+                                   (int)monitor_info->rect.y,
+                                   monitor_info->width_mm,
+                                   monitor_info->height_mm,
                                   output->subpixel_order,
                                   output->vendor,
                                   output->product,
@@ -161,59 +158,63 @@ wayland_output_update_for_output (MetaWaylandOutput *wayland_output,

      wl_output_send_mode (resource,
                           mode_flags,
-                           (int)output->crtc->current_mode->width,
-                           (int)output->crtc->current_mode->height,
-                           (int)output->crtc->current_mode->refresh_rate);
+                           (int)monitor_info->rect.width,
+                           (int)monitor_info->rect.height,
+                           (int)monitor_info->refresh_rate);
    }

  /* It's very important that we change the output pointer here, as
     the old structure is about to be freed by MetaMonitorManager */
-  wayland_output->output = output;
-  wayland_output->x = output->crtc->rect.x;
-  wayland_output->y = output->crtc->rect.y;
+  wayland_output->monitor_info = monitor_info;
+  wayland_output->x = monitor_info->rect.x;
+  wayland_output->y = monitor_info->rect.y;
  wayland_output->transform = wl_transform;
 }

+static MetaWaylandOutput *
+meta_wayland_output_new (MetaWaylandCompositor *compositor)
+{
+  MetaWaylandOutput *wayland_output;
+
+  wayland_output = g_object_new (META_TYPE_WAYLAND_OUTPUT, NULL);
+  wayland_output->global = wl_global_create (compositor->wayland_display,
+                                             &wl_output_interface,
+                                             META_WL_OUTPUT_VERSION,
+                                             wayland_output, bind_output);
+
+  return wayland_output;
+}
+
 static GHashTable *
 meta_wayland_compositor_update_outputs (MetaWaylandCompositor *compositor,
                                        MetaMonitorManager    *monitors)
 {
-  MetaOutput *outputs;
-  unsigned int i, n_outputs;
+  unsigned int i;
  GHashTable *new_table;
+  MetaMonitorInfo *monitor_infos;
+  unsigned int n_monitor_infos;

-  outputs = meta_monitor_manager_get_outputs (monitors, &n_outputs);
+  monitor_infos = meta_monitor_manager_get_monitor_infos (monitors, &n_monitor_infos);
  new_table = g_hash_table_new_full (NULL, NULL, NULL, wayland_output_destroy_notify);

-  for (i = 0; i < n_outputs; i++)
+  for (i = 0; i < n_monitor_infos; i++)
    {
-      MetaOutput *output = &outputs[i];
+      MetaMonitorInfo *info = &monitor_infos[i];
      MetaWaylandOutput *wayland_output;

-      /* wayland does not expose disabled outputs */
-      if (output->crtc == NULL)
-        {
-          g_hash_table_remove (compositor->outputs, GSIZE_TO_POINTER (output->winsys_id));
-          continue;
-        }
-
-      wayland_output = g_hash_table_lookup (compositor->outputs, GSIZE_TO_POINTER (output->winsys_id));
+      if (info->winsys_id == 0)
+        continue;
+      wayland_output = g_hash_table_lookup (compositor->outputs, GSIZE_TO_POINTER (info->winsys_id));

      if (wayland_output)
        {
-          g_hash_table_steal (compositor->outputs, GSIZE_TO_POINTER (output->winsys_id));
+          g_hash_table_steal (compositor->outputs, GSIZE_TO_POINTER (info->winsys_id));
        }
      else
-        {
-          wayland_output = g_slice_new0 (MetaWaylandOutput);
-          wayland_output->global = wl_global_create (compositor->wayland_display,
-                                                     &wl_output_interface,
-						     META_WL_OUTPUT_VERSION,
-                                                     wayland_output, bind_output);
-        }
+        wayland_output = meta_wayland_output_new (compositor);

-      wayland_output_update_for_output (wayland_output, output);
-      g_hash_table_insert (new_table, GSIZE_TO_POINTER (output->winsys_id), wayland_output);
+      wayland_output_update_for_output (wayland_output, info);
+      g_hash_table_insert (new_table, GSIZE_TO_POINTER (info->winsys_id), wayland_output);
    }

  g_hash_table_destroy (compositor->outputs);
@@ -227,6 +228,49 @@ on_monitors_changed (MetaMonitorManager    *monitors,
  compositor->outputs = meta_wayland_compositor_update_outputs (compositor, monitors);
 }

+static void
+meta_wayland_output_init (MetaWaylandOutput *wayland_output)
+{
+}
+
+static void
+meta_wayland_output_finalize (GObject *object)
+{
+  MetaWaylandOutput *wayland_output = META_WAYLAND_OUTPUT (object);
+  GList *l;
+
+  wl_global_destroy (wayland_output->global);
+
+  /* Make sure the wl_output destructor doesn't try to access MetaWaylandOutput
+   * after we have freed it.
+   */
+  for (l = wayland_output->resources; l; l = l->next)
+    {
+      struct wl_resource *output_resource = l->data;
+
+      wl_resource_set_user_data (output_resource, NULL);
+    }
+
+  g_list_free (wayland_output->resources);
+
+  G_OBJECT_CLASS (meta_wayland_output_parent_class)->finalize (object);
+}
+
+static void
+meta_wayland_output_class_init (MetaWaylandOutputClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->finalize = meta_wayland_output_finalize;
+
+  signals[OUTPUT_DESTROYED] = g_signal_new ("output-destroyed",
+                                            G_TYPE_FROM_CLASS (object_class),
+                                            G_SIGNAL_RUN_LAST,
+                                            0,
+                                            NULL, NULL, NULL,
+                                            G_TYPE_NONE, 0);
+}
+
 void
 meta_wayland_outputs_init (MetaWaylandCompositor *compositor)
 {
--- a/src/wayland/meta-wayland-outputs.h
+++ b/src/wayland/meta-wayland-outputs.h
@@ -25,8 +25,37 @@
 #ifndef META_WAYLAND_OUTPUTS_H
 #define META_WAYLAND_OUTPUTS_H

+#include "backends/meta-monitor-manager-private.h"
 #include "meta-wayland-private.h"

+#define META_TYPE_WAYLAND_OUTPUT            (meta_wayland_output_get_type ())
+#define META_WAYLAND_OUTPUT(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), META_TYPE_WAYLAND_OUTPUT, MetaWaylandOutput))
+#define META_WAYLAND_OUTPUT_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  META_TYPE_WAYLAND_OUTPUT, MetaWaylandOutputClass))
+#define META_IS_WAYLAND_OUTPUT(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), META_TYPE_WAYLAND_OUTPUT))
+#define META_IS_WAYLAND_OUTPUT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  META_TYPE_WAYLAND_OUTPUT))
+#define META_WAYLAND_OUTPUT_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  META_TYPE_WAYLAND_OUTPUT, MetaWaylandOutputClass))
+
+typedef struct _MetaWaylandOutputClass  MetaWaylandOutputClass;
+
+struct _MetaWaylandOutput
+{
+  GObject                   parent;
+
+  MetaMonitorInfo          *monitor_info;
+  struct wl_global         *global;
+  int                       x, y;
+  enum wl_output_transform  transform;
+
+  GList                    *resources;
+};
+
+struct _MetaWaylandOutputClass
+{
+  GObjectClass parent_class;
+};
+
+GType meta_wayland_output_get_type (void) G_GNUC_CONST;
+
 void meta_wayland_outputs_init (MetaWaylandCompositor *compositor);

 #endif /* META_WAYLAND_OUTPUTS_H */
--- a/src/wayland/meta-wayland-pointer.c
+++ b/src/wayland/meta-wayland-pointer.c
@@ -339,8 +339,6 @@ handle_button_event (MetaWaylandPointer *pointer,
 {
  gboolean implicit_grab;

-  notify_motion (pointer, event);
-
  implicit_grab = (event->type == CLUTTER_BUTTON_PRESS) && (pointer->button_count == 1);
  if (implicit_grab)
    {
@@ -363,8 +361,6 @@ handle_scroll_event (MetaWaylandPointer *pointer,
  struct wl_list *l;
  wl_fixed_t x_value = 0, y_value = 0;

-  notify_motion (pointer, event);
-
  if (clutter_event_is_pointer_emulated (event))
    return;

--- a/src/wayland/meta-wayland-private.h
+++ b/src/wayland/meta-wayland-private.h
@@ -33,6 +33,8 @@
 #include "meta-wayland-surface.h"
 #include "meta-wayland-seat.h"

+typedef struct _MetaXWaylandSelection MetaXWaylandSelection;
+
 typedef struct
 {
  struct wl_list link;
@@ -43,7 +45,7 @@ typedef struct
 typedef struct
 {
  int display_index;
-  char *lockfile;
+  char *lock_file;
  int abstract_fd;
  int unix_fd;
  pid_t pid;
@@ -52,6 +54,8 @@ typedef struct
  char *display_name;

  GMainLoop *init_loop;
+
+  MetaXWaylandSelection *selection_data;
 } MetaXWaylandManager;

 struct _MetaWaylandCompositor
--- a/src/wayland/meta-wayland-surface.c
+++ b/src/wayland/meta-wayland-surface.c
@@ -42,16 +42,18 @@
 #include "meta-wayland-pointer.h"
 #include "meta-wayland-popup.h"
 #include "meta-wayland-data-device.h"
+#include "meta-wayland-outputs.h"

 #include "meta-cursor-tracker-private.h"
 #include "display-private.h"
 #include "window-private.h"
-#include "window-wayland.h"
+#include "meta-window-wayland.h"

 #include "compositor/region-utils.h"

 #include "meta-surface-actor.h"
 #include "meta-surface-actor-wayland.h"
+#include "meta-xwayland-private.h"

 typedef enum
 {
@@ -121,24 +123,30 @@ static void
 surface_process_damage (MetaWaylandSurface *surface,
                        cairo_region_t *region)
 {
+  unsigned int buffer_width;
+  unsigned int buffer_height;
+  cairo_rectangle_int_t surface_rect;
  cairo_region_t *scaled_region;
-  cairo_rectangle_int_t buffer_rect;
  int i, n_rectangles;

  if (!surface->buffer)
    return;

-  buffer_rect.x = 0;
-  buffer_rect.y = 0;
-  buffer_rect.width = cogl_texture_get_width (surface->buffer->texture);
-  buffer_rect.height = cogl_texture_get_height (surface->buffer->texture);
+  /* Intersect the damage region with the surface region before scaling in
+   * order to avoid integer overflow when scaling a damage region is too large
+   * (for example INT32_MAX which mesa passes). */
+  buffer_width = cogl_texture_get_width (surface->buffer->texture);
+  buffer_height = cogl_texture_get_height (surface->buffer->texture);
+  surface_rect = (cairo_rectangle_int_t) {
+    .width = buffer_width / surface->scale,
+    .height = buffer_height / surface->scale,
+  };
+  cairo_region_intersect_rectangle (region, &surface_rect);

  /* The damage region must be in the same coordinate space as the buffer,
   * i.e. scaled with surface->scale. */
  scaled_region = meta_region_scale (region, surface->scale);

-  cairo_region_intersect_rectangle (scaled_region, &buffer_rect);
-
  /* First update the buffer. */
  meta_wayland_buffer_process_damage (surface->buffer, scaled_region);

@@ -180,48 +188,84 @@ calculate_surface_window_geometry (MetaWaylandSurface *surface,
                                   float               parent_x,
                                   float               parent_y)
 {
-  ClutterActor *surface_actor = CLUTTER_ACTOR (surface->surface_actor);
+  MetaSurfaceActorWayland *surface_actor =
+    META_SURFACE_ACTOR_WAYLAND (surface->surface_actor);
+  MetaRectangle subsurface_rect;
  MetaRectangle geom;
-  float x, y;
  GList *l;

  /* Unmapped surfaces don't count. */
-  if (!CLUTTER_ACTOR_IS_VISIBLE (surface_actor))
+  if (!CLUTTER_ACTOR_IS_VISIBLE (CLUTTER_ACTOR (surface_actor)))
    return;

  if (!surface->buffer)
    return;

-  /* XXX: Is there a better way to do this using Clutter APIs? */
-  clutter_actor_get_position (surface_actor, &x, &y);
+  meta_surface_actor_wayland_get_subsurface_rect (surface_actor,
+                                                  &subsurface_rect);

-  geom.x = parent_x + x;
-  geom.y = parent_x + y;
-  geom.width = cogl_texture_get_width (surface->buffer->texture);
-  geom.height = cogl_texture_get_height (surface->buffer->texture);
+  geom.x = parent_x + subsurface_rect.x;
+  geom.y = parent_x + subsurface_rect.y;
+  geom.width = subsurface_rect.width;
+  geom.height = subsurface_rect.height;

  meta_rectangle_union (total_geometry, &geom, total_geometry);

  for (l = surface->subsurfaces; l != NULL; l = l->next)
    {
      MetaWaylandSurface *subsurface = l->data;
-      calculate_surface_window_geometry (subsurface, total_geometry, x, y);
+      calculate_surface_window_geometry (subsurface, total_geometry,
+                                         subsurface_rect.x,
+                                         subsurface_rect.y);
    }
 }

+static void
+destroy_window (MetaWaylandSurface *surface)
+{
+  if (surface->window)
+    {
+      MetaDisplay *display = meta_get_display ();
+      guint32 timestamp = meta_display_get_current_time_roundtrip (display);
+
+      meta_window_unmanage (surface->window, timestamp);
+    }
+
+  g_assert (surface->window == NULL);
+}
+
 static void
 toplevel_surface_commit (MetaWaylandSurface      *surface,
                         MetaWaylandPendingState *pending)
 {
  MetaWindow *window = surface->window;

-  /* Sanity check. */
-  if (surface->buffer == NULL)
+  if (surface->role == META_WAYLAND_SURFACE_ROLE_WL_SHELL_SURFACE)
    {
-      wl_resource_post_error (surface->resource,
-                              WL_DISPLAY_ERROR_INVALID_OBJECT,
-                              "Cannot commit a NULL buffer to an xdg_surface");
-      return;
+      /* For wl_shell, it's equivalent to an unmap. Semantics
+       * are poorly defined, so we can choose some that are
+       * convenient for us. */
+      if (surface->buffer && !window)
+        {
+          window = meta_window_wayland_new (meta_get_display (), surface);
+          meta_wayland_surface_set_window (surface, window);
+        }
+      else if (surface->buffer == NULL && window)
+        {
+          destroy_window (surface);
+          return;
+        }
+    }
+  else
+    {
+      if (surface->buffer == NULL)
+        {
+          /* XDG surfaces can't commit NULL buffers */
+          wl_resource_post_error (surface->resource,
+                                  WL_DISPLAY_ERROR_INVALID_OBJECT,
+                                  "Cannot commit a NULL buffer to an xdg_surface");
+          return;
+        }
    }

  /* We resize X based surfaces according to X events */
@@ -341,49 +385,113 @@ static void
 subsurface_surface_commit (MetaWaylandSurface      *surface,
                           MetaWaylandPendingState *pending)
 {
-  MetaSurfaceActor *surface_actor = surface->surface_actor;
-  float x, y;
+  MetaSurfaceActorWayland *surface_actor =
+    META_SURFACE_ACTOR_WAYLAND (surface->surface_actor);

  if (surface->buffer != NULL)
    clutter_actor_show (CLUTTER_ACTOR (surface_actor));
  else
    clutter_actor_hide (CLUTTER_ACTOR (surface_actor));
-
-  clutter_actor_get_position (CLUTTER_ACTOR (surface_actor), &x, &y);
-  x += pending->dx;
-  y += pending->dy;
-  clutter_actor_set_position (CLUTTER_ACTOR (surface_actor), x, y);
 }

-static void
-subsurface_parent_surface_committed (MetaWaylandSurface *surface);
-
-static void
-parent_surface_committed (gpointer data, gpointer user_data)
+/* A non-subsurface is always desynchronized.
+ *
+ * A subsurface is effectively synchronized if either its parent is
+ * synchronized or itself is in synchronized mode. */
+static gboolean
+is_surface_effectively_synchronized (MetaWaylandSurface *surface)
 {
-  subsurface_parent_surface_committed (data);
+  if (surface->wl_subsurface == NULL)
+    {
+      return FALSE;
+    }
+  else
+    {
+      if (surface->sub.synchronous)
+        return TRUE;
+      else
+        return is_surface_effectively_synchronized (surface->sub.parent);
+    }
 }

 static void
-commit_pending_state (MetaWaylandSurface      *surface,
-                      MetaWaylandPendingState *pending)
+apply_pending_state (MetaWaylandSurface      *surface,
+                     MetaWaylandPendingState *pending);
+
+static void
+parent_surface_state_applied (gpointer data, gpointer user_data)
+{
+  MetaWaylandSurface *surface = data;
+
+  if (surface->sub.pending_pos)
+    {
+      surface->sub.x = surface->sub.pending_x;
+      surface->sub.y = surface->sub.pending_y;
+      surface->sub.pending_pos = FALSE;
+    }
+
+  if (surface->sub.pending_placement_ops)
+    {
+      GSList *it;
+      MetaWaylandSurface *parent = surface->sub.parent;
+      ClutterActor *parent_actor =
+        clutter_actor_get_parent (CLUTTER_ACTOR (parent->surface_actor));
+      ClutterActor *surface_actor =
+        surface_actor = CLUTTER_ACTOR (surface->surface_actor);
+
+      for (it = surface->sub.pending_placement_ops; it; it = it->next)
+        {
+          MetaWaylandSubsurfacePlacementOp *op = it->data;
+          ClutterActor *sibling_actor;
+
+          if (!op->sibling)
+            {
+              g_slice_free (MetaWaylandSubsurfacePlacementOp, op);
+              continue;
+            }
+
+          sibling_actor = CLUTTER_ACTOR (op->sibling->surface_actor);
+
+          switch (op->placement)
+            {
+            case META_WAYLAND_SUBSURFACE_PLACEMENT_ABOVE:
+              clutter_actor_set_child_above_sibling (parent_actor,
+                                                     surface_actor,
+                                                     sibling_actor);
+              break;
+            case META_WAYLAND_SUBSURFACE_PLACEMENT_BELOW:
+              clutter_actor_set_child_below_sibling (parent_actor,
+                                                     surface_actor,
+                                                     sibling_actor);
+              break;
+            }
+
+          wl_list_remove (&op->sibling_destroy_listener.link);
+          g_slice_free (MetaWaylandSubsurfacePlacementOp, op);
+        }
+
+      g_slist_free (surface->sub.pending_placement_ops);
+      surface->sub.pending_placement_ops = NULL;
+    }
+
+  if (is_surface_effectively_synchronized (surface))
+    apply_pending_state (surface, &surface->sub.pending);
+
+  meta_surface_actor_wayland_sync_subsurface_state (
+    META_SURFACE_ACTOR_WAYLAND (surface->surface_actor));
+}
+
+static void
+apply_pending_state (MetaWaylandSurface      *surface,
+                     MetaWaylandPendingState *pending)
 {
  MetaWaylandCompositor *compositor = surface->compositor;

-  /* If this surface is a subsurface in in synchronous mode, commit
-   * has a special-case and should not apply the pending state immediately.
-   *
-   * Instead, we move it to another pending state, which will be
-   * actually committed when the parent commits.
-   */
-  if (surface->sub.synchronous)
-    {
-      move_pending_state (pending, &surface->sub.pending);
-      return;
-    }
-
  if (pending->newly_attached)
    {
+      if (!surface->buffer && surface->window)
+        meta_window_queue (surface->window, META_QUEUE_CALC_SHOWING);
+
      surface_set_buffer (surface, pending->buffer);

      if (pending->buffer)
@@ -416,31 +524,53 @@ commit_pending_state (MetaWaylandSurface      *surface,
      surface->input_region = cairo_region_reference (pending->input_region);
    }

-  meta_surface_actor_wayland_sync_state (
-    META_SURFACE_ACTOR_WAYLAND (surface->surface_actor));
-
  /* wl_surface.frame */
  wl_list_insert_list (&compositor->frame_callbacks, &pending->frame_callback_list);
  wl_list_init (&pending->frame_callback_list);

-  if (surface == compositor->seat->pointer.cursor_surface)
-    cursor_surface_commit (surface, pending);
-  else if (meta_wayland_data_device_is_dnd_surface (&compositor->seat->data_device, surface))
-    dnd_surface_commit (surface, pending);
-  else if (surface->window)
-    toplevel_surface_commit (surface, pending);
-  else if (surface->wl_subsurface)
-    subsurface_surface_commit (surface, pending);
+  switch (surface->role)
+    {
+    case META_WAYLAND_SURFACE_ROLE_NONE:
+      break;
+    case META_WAYLAND_SURFACE_ROLE_CURSOR:
+      cursor_surface_commit (surface, pending);
+      break;
+    case META_WAYLAND_SURFACE_ROLE_DND:
+      dnd_surface_commit (surface, pending);
+      break;
+    case META_WAYLAND_SURFACE_ROLE_XDG_SURFACE:
+    case META_WAYLAND_SURFACE_ROLE_XDG_POPUP:
+    case META_WAYLAND_SURFACE_ROLE_WL_SHELL_SURFACE:
+      toplevel_surface_commit (surface, pending);
+      break;
+    case META_WAYLAND_SURFACE_ROLE_SUBSURFACE:
+      subsurface_surface_commit (surface, pending);
+      break;
+    }

-  g_list_foreach (surface->subsurfaces, parent_surface_committed, NULL);
+  meta_surface_actor_wayland_sync_state (
+    META_SURFACE_ACTOR_WAYLAND (surface->surface_actor));

  pending_state_reset (pending);
+
+  g_list_foreach (surface->subsurfaces, parent_surface_state_applied, NULL);
 }

 static void
 meta_wayland_surface_commit (MetaWaylandSurface *surface)
 {
-  commit_pending_state (surface, &surface->pending);
+  /*
+   * If this is a sub-surface and it is in effective synchronous mode, only
+   * cache the pending surface state until either one of the following two
+   * scenarios happens:
+   *  1) Its parent surface gets its state applied.
+   *  2) Its mode changes from synchronized to desynchronized and its parent
+   *     surface is in effective desynchronized mode.
+   */
+  if (is_surface_effectively_synchronized (surface))
+    move_pending_state (&surface->pending, &surface->sub.pending);
+  else
+    apply_pending_state (surface, &surface->pending);
 }

 static void
@@ -636,26 +766,131 @@ sync_reactive (MetaWaylandSurface *surface)
                              surface_should_be_reactive (surface));
 }

+static void
+sync_drag_dest_funcs (MetaWaylandSurface *surface)
+{
+  if (surface->window &&
+      surface->window->client_type == META_WINDOW_CLIENT_TYPE_X11)
+    surface->dnd.funcs = meta_xwayland_selection_get_drag_dest_funcs ();
+  else
+    surface->dnd.funcs = meta_wayland_data_device_get_drag_dest_funcs ();
+}
+
+static void
+surface_entered_output (MetaWaylandSurface *surface,
+                        MetaWaylandOutput *wayland_output)
+{
+  GList *iter;
+  struct wl_resource *resource;
+
+  for (iter = wayland_output->resources; iter != NULL; iter = iter->next)
+    {
+      resource = iter->data;
+
+      if (wl_resource_get_client (resource) !=
+          wl_resource_get_client (surface->resource))
+        continue;
+
+      wl_surface_send_enter (surface->resource, resource);
+    }
+}
+
+static void
+surface_left_output (MetaWaylandSurface *surface,
+                     MetaWaylandOutput *wayland_output)
+{
+  GList *iter;
+  struct wl_resource *resource;
+
+  for (iter = wayland_output->resources; iter != NULL; iter = iter->next)
+    {
+      resource = iter->data;
+
+      if (wl_resource_get_client (resource) !=
+          wl_resource_get_client (surface->resource))
+        continue;
+
+      wl_surface_send_leave (surface->resource, resource);
+    }
+}
+
+static void
+set_surface_is_on_output (MetaWaylandSurface *surface,
+                          MetaWaylandOutput *wayland_output,
+                          gboolean is_on_output);
+
+static void
+surface_handle_output_destroy (MetaWaylandOutput *wayland_output,
+                               GParamSpec *pspec,
+                               MetaWaylandSurface *surface)
+{
+  set_surface_is_on_output (surface, wayland_output, FALSE);
+}
+
+static void
+set_surface_is_on_output (MetaWaylandSurface *surface,
+                          MetaWaylandOutput *wayland_output,
+                          gboolean is_on_output)
+{
+  gboolean was_on_output = g_hash_table_contains (surface->outputs,
+                                                  wayland_output);
+
+  if (!was_on_output && is_on_output)
+    {
+      g_signal_connect (wayland_output, "output-destroyed",
+                        G_CALLBACK (surface_handle_output_destroy),
+                        surface);
+      g_hash_table_add (surface->outputs, wayland_output);
+      surface_entered_output (surface, wayland_output);
+    }
+  else if (was_on_output && !is_on_output)
+    {
+      g_hash_table_remove (surface->outputs, wayland_output);
+      g_signal_handlers_disconnect_by_func  (
+        wayland_output, (gpointer)surface_handle_output_destroy, surface);
+      surface_left_output (surface, wayland_output);
+    }
+}
+
+static void
+update_surface_output_state (gpointer key, gpointer value, gpointer user_data)
+{
+  MetaWaylandOutput *wayland_output = value;
+  MetaWaylandSurface *surface = user_data;
+  MetaSurfaceActorWayland *actor =
+    META_SURFACE_ACTOR_WAYLAND (surface->surface_actor);
+  MetaMonitorInfo *monitor;
+  gboolean is_on_output;
+
+  monitor = wayland_output->monitor_info;
+  if (!monitor)
+    {
+      set_surface_is_on_output (surface, wayland_output, FALSE);
+      return;
+    }
+
+  is_on_output = meta_surface_actor_wayland_is_on_monitor (actor, monitor);
+  set_surface_is_on_output (surface, wayland_output, is_on_output);
+}
+
+void
+meta_wayland_surface_update_outputs (MetaWaylandSurface *surface)
+{
+  if (!surface->compositor)
+    return;
+
+  g_hash_table_foreach (surface->compositor->outputs,
+                        update_surface_output_state,
+                        surface);
+}
+
 void
 meta_wayland_surface_set_window (MetaWaylandSurface *surface,
                                 MetaWindow         *window)
 {
  surface->window = window;
  sync_reactive (surface);
-}
-
-static void
-destroy_window (MetaWaylandSurface *surface)
-{
-  if (surface->window)
-    {
-      MetaDisplay *display = meta_get_display ();
-      guint32 timestamp = meta_display_get_current_time_roundtrip (display);
-
-      meta_window_unmanage (surface->window, timestamp);
-    }
-
-  g_assert (surface->window == NULL);
+  sync_drag_dest_funcs (surface);
 }

 static void
@@ -678,10 +913,15 @@ wl_surface_destructor (struct wl_resource *resource)
  if (surface->input_region)
    cairo_region_destroy (surface->input_region);

+  meta_surface_actor_wayland_surface_destroyed (
+    META_SURFACE_ACTOR_WAYLAND (surface->surface_actor));
+
  g_object_unref (surface->surface_actor);

  meta_wayland_compositor_destroy_frame_callbacks (compositor, surface);

+  g_hash_table_unref (surface->outputs);
+
  if (surface->resource)
    wl_resource_set_user_data (surface->resource, NULL);

@@ -718,6 +958,10 @@ meta_wayland_surface_create (MetaWaylandCompositor *compositor,
  surface->buffer_destroy_listener.notify = surface_handle_buffer_destroy;
  surface->surface_actor = g_object_ref_sink (meta_surface_actor_wayland_new (surface));

+  sync_drag_dest_funcs (surface);
+
+  surface->outputs = g_hash_table_new (NULL, NULL);
+
  pending_state_init (&surface->pending);
  return surface;
 }
@@ -1160,11 +1404,8 @@ xdg_shell_get_xdg_popup (struct wl_client *client,
                                    &surface->popup.parent_destroy_listener);

  window = meta_window_wayland_new (display, surface);
-  meta_window_move_frame (window, FALSE,
-                          parent_surf->window->rect.x + x,
-                          parent_surf->window->rect.y + y);
+  meta_window_wayland_place_relative_to (window, parent_surf->window, x, y);
  window->showing_for_first_time = FALSE;
-  window->placed = TRUE;

  meta_wayland_surface_set_window (surface, window);

@@ -1328,10 +1569,9 @@ wl_shell_surface_set_transient (struct wl_client *client,
  wl_shell_surface_set_state (surface, SURFACE_STATE_TOPLEVEL);

  meta_window_set_transient_for (surface->window, parent_surf->window);
-  meta_window_move_frame (surface->window, FALSE,
-                          parent_surf->window->rect.x + x,
-                          parent_surf->window->rect.y + y);
-  surface->window->placed = TRUE;
+  meta_window_wayland_place_relative_to (surface->window,
+                                         parent_surf->window,
+                                         x, y);
 }

 static void
@@ -1346,6 +1586,17 @@ wl_shell_surface_set_fullscreen (struct wl_client *client,
  wl_shell_surface_set_state (surface, SURFACE_STATE_FULLSCREEN);
 }

+static void
+handle_wl_shell_popup_parent_destroyed (struct wl_listener *listener,
+                                        void *data)
+{
+  MetaWaylandSurface *surface =
+    wl_container_of (listener, surface, popup.parent_destroy_listener);
+
+  wl_list_remove (&surface->popup.parent_destroy_listener.link);
+  surface->popup.parent = NULL;
+}
+
 static void
 wl_shell_surface_set_popup (struct wl_client *client,
                            struct wl_resource *resource,
@@ -1369,10 +1620,18 @@ wl_shell_surface_set_popup (struct wl_client *client,
    }

  meta_window_set_transient_for (surface->window, parent_surf->window);
-  meta_window_move_frame (surface->window, FALSE,
-                          parent_surf->window->rect.x + x,
-                          parent_surf->window->rect.y + y);
-  surface->window->placed = TRUE;
+  meta_window_wayland_place_relative_to (surface->window,
+                                         parent_surf->window,
+                                         x, y);
+
+  if (!surface->popup.parent)
+    {
+      surface->popup.parent = parent_surf;
+      surface->popup.parent_destroy_listener.notify =
+        handle_wl_shell_popup_parent_destroyed;
+      wl_resource_add_destroy_listener (parent_surf->resource,
+                                        &surface->popup.parent_destroy_listener);
+    }

  meta_wayland_pointer_start_popup_grab (&seat->pointer, surface);
 }
@@ -1475,14 +1734,14 @@ gtk_surface_destructor (struct wl_resource *resource)
 }

 static void
-set_dbus_properties (struct wl_client   *client,
-                     struct wl_resource *resource,
-                     const char         *application_id,
-                     const char         *app_menu_path,
-                     const char         *menubar_path,
-                     const char         *window_object_path,
-                     const char         *application_object_path,
-                     const char         *unique_bus_name)
+gtk_surface_set_dbus_properties (struct wl_client   *client,
+                                 struct wl_resource *resource,
+                                 const char         *application_id,
+                                 const char         *app_menu_path,
+                                 const char         *menubar_path,
+                                 const char         *window_object_path,
+                                 const char         *application_object_path,
+                                 const char         *unique_bus_name)
 {
  MetaWaylandSurface *surface = wl_resource_get_user_data (resource);

@@ -1502,8 +1761,36 @@ set_dbus_properties (struct wl_client   *client,
                                       window_object_path);
 }

+static void
+gtk_surface_set_modal (struct wl_client   *client,
+                       struct wl_resource *resource)
+{
+  MetaWaylandSurface *surface = wl_resource_get_user_data (resource);
+
+  if (surface->is_modal)
+    return;
+
+  surface->is_modal = TRUE;
+  meta_window_set_type (surface->window, META_WINDOW_MODAL_DIALOG);
+}
+
+static void
+gtk_surface_unset_modal (struct wl_client   *client,
+                         struct wl_resource *resource)
+{
+  MetaWaylandSurface *surface = wl_resource_get_user_data (resource);
+
+  if (!surface->is_modal)
+    return;
+
+  surface->is_modal = FALSE;
+  meta_window_set_type (surface->window, META_WINDOW_NORMAL);
+}
+
 static const struct gtk_surface_interface meta_wayland_gtk_surface_interface = {
-  set_dbus_properties
+  gtk_surface_set_dbus_properties,
+  gtk_surface_set_modal,
+  gtk_surface_unset_modal,
 };

 static void
@@ -1540,6 +1827,17 @@ bind_gtk_shell (struct wl_client *client,
  uint32_t capabilities = 0;

  resource = wl_resource_create (client, &gtk_shell_interface, version, id);
+
+  if (version != META_GTK_SHELL_VERSION)
+    {
+      wl_resource_post_error (resource,
+                              WL_DISPLAY_ERROR_INVALID_OBJECT,
+                              "Incompatible gtk-shell version "
+                              "(supported version: %d)",
+                              META_GTK_SHELL_VERSION);
+      return;
+    }
+
  wl_resource_set_implementation (resource, &meta_wayland_gtk_shell_interface, data, NULL);

  if (!meta_prefs_get_show_fallback_app_menu ())
@@ -1548,59 +1846,6 @@ bind_gtk_shell (struct wl_client *client,
  gtk_shell_send_capabilities (resource, capabilities);
 }

-static void
-subsurface_parent_surface_committed (MetaWaylandSurface *surface)
-{
-  if (surface->sub.pending_pos)
-    {
-      clutter_actor_set_position (CLUTTER_ACTOR (surface->surface_actor),
-                                  surface->sub.pending_x,
-                                  surface->sub.pending_y);
-      surface->sub.pending_pos = FALSE;
-    }
-
-  if (surface->sub.pending_placement_ops)
-    {
-      GSList *it;
-      for (it = surface->sub.pending_placement_ops; it; it = it->next)
-        {
-          MetaWaylandSubsurfacePlacementOp *op = it->data;
-          ClutterActor *surface_actor;
-          ClutterActor *parent_actor;
-          ClutterActor *sibling_actor;
-
-          if (!op->sibling)
-            {
-              g_slice_free (MetaWaylandSubsurfacePlacementOp, op);
-              continue;
-            }
-
-          surface_actor = CLUTTER_ACTOR (surface->surface_actor);
-          parent_actor = clutter_actor_get_parent (CLUTTER_ACTOR (surface->sub.parent));
-          sibling_actor = CLUTTER_ACTOR (op->sibling->surface_actor);
-
-          switch (op->placement)
-            {
-            case META_WAYLAND_SUBSURFACE_PLACEMENT_ABOVE:
-              clutter_actor_set_child_above_sibling (parent_actor, surface_actor, sibling_actor);
-              break;
-            case META_WAYLAND_SUBSURFACE_PLACEMENT_BELOW:
-              clutter_actor_set_child_below_sibling (parent_actor, surface_actor, sibling_actor);
-              break;
-            }
-
-          wl_list_remove (&op->sibling_destroy_listener.link);
-          g_slice_free (MetaWaylandSubsurfacePlacementOp, op);
-        }
-
-      g_slist_free (surface->sub.pending_placement_ops);
-      surface->sub.pending_placement_ops = NULL;
-    }
-
-  if (surface->sub.synchronous)
-    commit_pending_state (surface, &surface->sub.pending);
-}
-
 static void
 unparent_actor (MetaWaylandSurface *surface)
 {
@@ -1745,11 +1990,13 @@ wl_subsurface_set_desync (struct wl_client *client,
                          struct wl_resource *resource)
 {
  MetaWaylandSurface *surface = wl_resource_get_user_data (resource);
+  gboolean was_effectively_synchronized;

-  if (surface->sub.synchronous)
-    subsurface_parent_surface_committed (surface);
-
+  was_effectively_synchronized = is_surface_effectively_synchronized (surface);
  surface->sub.synchronous = FALSE;
+  if (was_effectively_synchronized &&
+      !is_surface_effectively_synchronized (surface))
+    apply_pending_state (surface, &surface->sub.pending);
 }

 static const struct wl_subsurface_interface meta_wayland_wl_subsurface_interface = {
@@ -1908,12 +2155,6 @@ meta_wayland_surface_configure_notify (MetaWaylandSurface *surface,
      wl_array_init (&states);
      fill_states (&states, surface->window);

-      /* new_width and new_height comes from window->rect, which is based on
-       * the buffer size, not the surface size. The configure event requires
-       * surface size. */
-      new_width /= surface->scale;
-      new_height /= surface->scale;
-
      xdg_surface_send_configure (surface->xdg_surface, new_width, new_height, &states, serial);

      wl_array_release (&states);
@@ -1961,3 +2202,60 @@ meta_wayland_surface_popup_done (MetaWaylandSurface *surface)
  else if (surface->wl_shell_surface)
    wl_shell_surface_send_popup_done (surface->wl_shell_surface);
 }
+
+void
+meta_wayland_surface_drag_dest_focus_in (MetaWaylandSurface   *surface,
+                                         MetaWaylandDataOffer *offer)
+{
+  MetaWaylandCompositor *compositor = meta_wayland_compositor_get_default ();
+  MetaWaylandDataDevice *data_device = &compositor->seat->data_device;
+
+  surface->dnd.funcs->focus_in (data_device, surface, offer);
+}
+
+void
+meta_wayland_surface_drag_dest_motion (MetaWaylandSurface *surface,
+                                       const ClutterEvent *event)
+{
+  MetaWaylandCompositor *compositor = meta_wayland_compositor_get_default ();
+  MetaWaylandDataDevice *data_device = &compositor->seat->data_device;
+
+  surface->dnd.funcs->motion (data_device, surface, event);
+}
+
+void
+meta_wayland_surface_drag_dest_focus_out (MetaWaylandSurface *surface)
+{
+  MetaWaylandCompositor *compositor = meta_wayland_compositor_get_default ();
+  MetaWaylandDataDevice *data_device = &compositor->seat->data_device;
+
+  surface->dnd.funcs->focus_out (data_device, surface);
+}
+
+void
+meta_wayland_surface_drag_dest_drop (MetaWaylandSurface *surface)
+{
+  MetaWaylandCompositor *compositor = meta_wayland_compositor_get_default ();
+  MetaWaylandDataDevice *data_device = &compositor->seat->data_device;
+
+  surface->dnd.funcs->drop (data_device, surface);
+}
+
+MetaWindow *
+meta_wayland_surface_get_toplevel_window (MetaWaylandSurface *surface)
+{
+  while (surface)
+    {
+      if (surface->window)
+        {
+          if (surface->popup.parent)
+            surface = surface->popup.parent;
+          else
+            return surface->window;
+        }
+      else
+        surface = surface->sub.parent;
+    }
+
+  return NULL;
+}
--- a/src/wayland/meta-wayland-surface.h
+++ b/src/wayland/meta-wayland-surface.h
@@ -71,6 +71,20 @@ typedef struct
  gboolean has_new_geometry;
 } MetaWaylandPendingState;

+struct _MetaWaylandDragDestFuncs
+{
+  void (* focus_in)  (MetaWaylandDataDevice *data_device,
+                      MetaWaylandSurface    *surface,
+                      MetaWaylandDataOffer  *offer);
+  void (* focus_out) (MetaWaylandDataDevice *data_device,
+                      MetaWaylandSurface    *surface);
+  void (* motion)    (MetaWaylandDataDevice *data_device,
+                      MetaWaylandSurface    *surface,
+                      const ClutterEvent    *event);
+  void (* drop)      (MetaWaylandDataDevice *data_device,
+                      MetaWaylandSurface    *surface);
+};
+
 struct _MetaWaylandSurface
 {
  /* Generic stuff */
@@ -86,6 +100,11 @@ struct _MetaWaylandSurface
  int scale;
  int32_t offset_x, offset_y;
  GList *subsurfaces;
+  GHashTable *outputs;
+
+  struct {
+    const MetaWaylandDragDestFuncs *funcs;
+  } dnd;

  /* All the pending state that wl_surface.commit will apply. */
  MetaWaylandPendingState pending;
@@ -101,6 +120,7 @@ struct _MetaWaylandSurface
  struct wl_resource *xdg_shell_resource;
  MetaWaylandSerial acked_configure_serial;
  gboolean has_set_geometry;
+  gboolean is_modal;

  /* xdg_popup */
  struct {
@@ -116,6 +136,9 @@ struct _MetaWaylandSurface
    MetaWaylandSurface *parent;
    struct wl_listener parent_destroy_listener;

+    int x;
+    int y;
+
    /* When the surface is synchronous, its state will be applied
     * when the parent is committed. This is done by moving the
     * "real" pending state below to here when this surface is
@@ -160,4 +183,16 @@ void                meta_wayland_surface_delete (MetaWaylandSurface *surface);

 void                meta_wayland_surface_popup_done (MetaWaylandSurface *surface);

+/* Drag dest functions */
+void                meta_wayland_surface_drag_dest_focus_in  (MetaWaylandSurface   *surface,
+                                                              MetaWaylandDataOffer *offer);
+void                meta_wayland_surface_drag_dest_motion    (MetaWaylandSurface   *surface,
+                                                              const ClutterEvent   *event);
+void                meta_wayland_surface_drag_dest_focus_out (MetaWaylandSurface   *surface);
+void                meta_wayland_surface_drag_dest_drop      (MetaWaylandSurface   *surface);
+
+void                meta_wayland_surface_update_outputs (MetaWaylandSurface *surface);
+
+MetaWindow *        meta_wayland_surface_get_toplevel_window (MetaWaylandSurface *surface);
+
 #endif
--- a/src/wayland/meta-wayland-types.h
+++ b/src/wayland/meta-wayland-types.h
@@ -30,7 +30,8 @@ typedef struct _MetaWaylandPopupGrab MetaWaylandPopupGrab;
 typedef struct _MetaWaylandPopup MetaWaylandPopup;
 typedef struct _MetaWaylandKeyboard MetaWaylandKeyboard;
 typedef struct _MetaWaylandTouch MetaWaylandTouch;
-typedef struct _MetaWaylandDataSource MetaWaylandDataSource;
+typedef struct _MetaWaylandDragDestFuncs MetaWaylandDragDestFuncs;
+typedef struct _MetaWaylandDataOffer MetaWaylandDataOffer;
 typedef struct _MetaWaylandDataDevice MetaWaylandDataDevice;

 typedef struct _MetaWaylandBuffer MetaWaylandBuffer;
@@ -38,6 +39,8 @@ typedef struct _MetaWaylandRegion MetaWaylandRegion;

 typedef struct _MetaWaylandSurface MetaWaylandSurface;

+typedef struct _MetaWaylandOutput MetaWaylandOutput;
+
 typedef struct _MetaWaylandSerial MetaWaylandSerial;

 #endif
--- a/src/wayland/meta-wayland-versions.h
+++ b/src/wayland/meta-wayland-versions.h
@@ -42,7 +42,7 @@
 #define META_WL_SEAT_VERSION                4
 #define META_WL_OUTPUT_VERSION              2
 #define META_XSERVER_VERSION                1
-#define META_GTK_SHELL_VERSION              1
+#define META_GTK_SHELL_VERSION              2
 #define META_WL_SUBCOMPOSITOR_VERSION       1

 #endif
--- a/src/wayland/meta-window-wayland.c
+++ b/src/wayland/meta-window-wayland.c
@@ -24,7 +24,7 @@

 #include "config.h"

-#include "window-wayland.h"
+#include "meta-window-wayland.h"

 #include <meta/errors.h>
 #include "window-private.h"
@@ -166,9 +166,20 @@ meta_window_wayland_move_resize_internal (MetaWindow                *window,
 {
  MetaWindowWayland *wl_window = META_WINDOW_WAYLAND (window);
  gboolean can_move_now;
+  int configured_width;
+  int configured_height;
+  int monitor_scale;

  g_assert (window->frame == NULL);

+  /* The scale the window is drawn in might change depending on what monitor it
+   * is mainly on. Scale the configured rectangle to be in logical pixel
+   * coordinate space so that we can have a scale independent size to pass
+   * to the Wayland surface. */
+  monitor_scale = meta_window_wayland_get_main_monitor_scale (window);
+  configured_width = constrained_rect.width / monitor_scale;
+  configured_height = constrained_rect.height / monitor_scale;
+
  /* For wayland clients, the size is completely determined by the client,
   * and while this allows to avoid some trickery with frames and the resulting
   * lagging, we also need to insist a bit when the constraints would apply
@@ -223,8 +234,8 @@ meta_window_wayland_move_resize_internal (MetaWindow                *window,
            return;

          meta_wayland_surface_configure_notify (window->surface,
-                                                 constrained_rect.width,
-                                                 constrained_rect.height,
+                                                 configured_width,
+                                                 configured_height,
                                                 &wl_window->pending_configure_serial);

          /* We need to wait until the resize completes before we can move */
@@ -238,8 +249,8 @@ meta_window_wayland_move_resize_internal (MetaWindow                *window,
        }
    }

-  wl_window->last_sent_width = constrained_rect.width;
-  wl_window->last_sent_height = constrained_rect.height;
+  wl_window->last_sent_width = configured_width;
+  wl_window->last_sent_height = configured_height;

  if (can_move_now)
    {
@@ -277,12 +288,101 @@ meta_window_wayland_move_resize_internal (MetaWindow                *window,
    }
 }

+static void
+scale_rect_size (MetaRectangle *rect, float scale)
+{
+  rect->width = (int)(rect->width * scale);
+  rect->height = (int)(rect->height * scale);
+}
+
+static void
+meta_window_wayland_update_main_monitor (MetaWindow *window)
+{
+  const MetaMonitorInfo *from;
+  const MetaMonitorInfo *to;
+  const MetaMonitorInfo *scaled_new;
+  float scale;
+  MetaRectangle rect;
+
+  /* Require both the current and the new monitor would be the new main monitor,
+   * even given the resulting scale the window would end up having. This is
+   * needed to avoid jumping back and forth between the new and the old, since
+   * changing main monitor may cause the window to be resized so that it no
+   * longer have that same new main monitor. */
+  from = window->monitor;
+  to = meta_screen_calculate_monitor_for_window (window->screen, window);
+
+  if (from == to)
+    return;
+
+  /* If we are setting the first output, unsetting the output, or the new has
+   * the same scale as the old no need to do any further checking. */
+  if (from == NULL || to == NULL || from->scale == to->scale)
+    {
+      window->monitor = to;
+      return;
+    }
+
+  /* To avoid a window alternating between two main monitors because scaling
+   * changes the main monitor, wait until both the current and the new scale
+   * will result in the same main monitor. */
+  scale = (float)to->scale / from->scale;
+  rect = window->rect;
+  scale_rect_size (&rect, scale);
+  scaled_new = meta_screen_get_monitor_for_rect (window->screen, &rect);
+  if (to != scaled_new)
+    return;
+
+  window->monitor = to;
+}
+
 static void
 meta_window_wayland_main_monitor_changed (MetaWindow *window,
                                          const MetaMonitorInfo *old)
 {
-  MetaWaylandSurface *surface = window->surface;
+  float scale_factor;
+  MetaWaylandSurface *surface;

+  /* This function makes sure that window geometry, window actor geometry and
+   * surface actor geometry gets set according the old and current main monitor
+   * scale. If there either is no past or current main monitor, or if the scale
+   * didn't change, there is nothing to do. */
+  if (old == NULL ||
+      window->monitor == NULL ||
+      old->scale == window->monitor->scale)
+    return;
+
+  /* MetaWindow keeps its rectangles in the physical pixel coordinate space.
+   * When the main monitor of a window changes, it can cause the corresponding
+   * window surfaces to be scaled given the monitor scale, so we need to scale
+   * the rectangles in MetaWindow accordingly. */
+
+  scale_factor = (float)window->monitor->scale / old->scale;
+
+  /* Window size. */
+  scale_rect_size (&window->rect, scale_factor);
+
+  /* Window geometry offset (XXX: Need a better place, see
+   * meta_window_wayland_move_resize). */
+  window->custom_frame_extents.left =
+    (int)(scale_factor * window->custom_frame_extents.left);
+  window->custom_frame_extents.top =
+    (int)(scale_factor * window->custom_frame_extents.top);
+
+  /* Buffer rect. */
+  scale_rect_size (&window->buffer_rect, scale_factor);
+  window->buffer_rect.x =
+    window->rect.x - window->custom_frame_extents.left;
+  window->buffer_rect.y =
+    window->rect.y - window->custom_frame_extents.top;
+
+  meta_compositor_sync_window_geometry (window->display->compositor,
+                                        window,
+                                        TRUE);
+
+  /* The surface actor needs to update the scale recursively for itself and all
+   * its subsurfaces */
+  surface = window->surface;
  if (surface)
    {
      MetaSurfaceActorWayland *actor =
@@ -290,6 +390,8 @@ meta_window_wayland_main_monitor_changed (MetaWindow *window,

      meta_surface_actor_wayland_sync_state_recursive (actor);
    }
+
+  meta_window_emit_size_changed (window);
 }

 static void
@@ -330,6 +432,7 @@ meta_window_wayland_class_init (MetaWindowWaylandClass *klass)
  window_class->grab_op_began = meta_window_wayland_grab_op_began;
  window_class->grab_op_ended = meta_window_wayland_grab_op_ended;
  window_class->move_resize_internal = meta_window_wayland_move_resize_internal;
+  window_class->update_main_monitor = meta_window_wayland_update_main_monitor;
  window_class->main_monitor_changed = meta_window_wayland_main_monitor_changed;
 }

@@ -412,6 +515,12 @@ should_do_pending_move (MetaWindowWayland *wl_window,
  return TRUE;
 }

+int
+meta_window_wayland_get_main_monitor_scale (MetaWindow *window)
+{
+  return window->monitor->scale;
+}
+
 /**
 * meta_window_move_resize_wayland:
 *
@@ -428,6 +537,22 @@ meta_window_wayland_move_resize (MetaWindow        *window,
  int gravity;
  MetaRectangle rect;
  MetaMoveResizeFlags flags;
+  int monitor_scale;
+
+  /* new_geom is in the logical pixel coordinate space, but MetaWindow wants its
+   * rects to represent what in turn will end up on the stage, i.e. we need to
+   * scale new_geom to physical pixels given what buffer scale and texture scale
+   * is in use. */
+  monitor_scale = meta_window_wayland_get_main_monitor_scale (window);
+  new_geom.x *= monitor_scale;
+  new_geom.y *= monitor_scale;
+  new_geom.width *= monitor_scale;
+  new_geom.height *= monitor_scale;
+
+  /* The (dx, dy) offset is also in logical pixel coordinate space and needs
+   * to be scaled in the same way as new_geom. */
+  dx *= monitor_scale;
+  dy *= monitor_scale;

  /* XXX: Find a better place to store the window geometry offsets. */
  window->custom_frame_extents.left = new_geom.x;
@@ -470,3 +595,24 @@ meta_window_wayland_move_resize (MetaWindow        *window,
  gravity = meta_resize_gravity_from_grab_op (window->display->grab_op);
  meta_window_move_resize_internal (window, flags, gravity, rect);
 }
+
+void
+meta_window_wayland_place_relative_to (MetaWindow *window,
+                                       MetaWindow *other,
+                                       int         x,
+                                       int         y)
+{
+  int monitor_scale;
+
+  /* If there is no monitor, we can't position the window reliably. */
+  if (!other->monitor)
+    return;
+
+  /* Scale the relative coordinate (x, y) from logical pixels to physical
+   * pixels. */
+  monitor_scale = other->monitor->scale;
+  meta_window_move_frame (window, FALSE,
+                          other->buffer_rect.x + (x * monitor_scale),
+                          other->buffer_rect.y + (y * monitor_scale));
+  window->placed = TRUE;
+}
--- a/src/wayland/meta-window-wayland.h
+++ b/src/wayland/meta-window-wayland.h
@@ -50,5 +50,11 @@ void meta_window_wayland_move_resize (MetaWindow        *window,
                                      MetaRectangle      new_geom,
                                      int                dx,
                                      int                dy);
+int meta_window_wayland_get_main_monitor_scale (MetaWindow *window);
+
+void meta_window_wayland_place_relative_to (MetaWindow *window,
+                                            MetaWindow *other,
+                                            int         x,
+                                            int         y);

 #endif
--- a/Show More
+++ b/Show More