Rewrite background code

The old requirement that multiple MetaBackgroundActor objects be
layered on top of each to produce blended backgrounds resulted in
extremely inefficient drawing since the entire framebuffer had
to be read and written multiple times.

 * Replace the MetaBackground ClutterContent with a plain GObject
   that serves to hold the background parameters and prerender
   textures to be used to draw the background. It handles
   colors, gradients, and blended images, but does not handle
   vignetting

 * Add vignetting to MetaBackgroundActor directly.

 * Add MetaBackgroundImage and MetaBackgroundImageCache to allow
   multiple MetaBackground objects to share the same images

By removing the usage of ClutterContent, the following optimizations
were easy to add:

 Blending is turned off when the actor is fully opaque
 Nearest-neighbour filtering is used when drawing 1:1

The GLSL vignette code is slightly improved to use a vertex shader
snippet for computing the texture coordinate => position in actor
mapping.

https://bugzilla.gnome.org/show_bug.cgi?id=735637

configure.ac

@@ -76,17 +76,23 @@ MUTTER_PC_MODULES="
    pango >= 1.2.0
    cairo >= 1.10.0
    gsettings-desktop-schemas >= 3.7.3
-   xcomposite >= 0.2 xfixes xext xdamage xi >= 1.6.0
-   xcursor
    $CLUTTER_PACKAGE >= 1.19.5
    clutter-egl-1.0
    cogl-1.0 >= 1.17.1
-   libinput
+   gbm
    upower-glib >= 0.99.0
    gnome-desktop-3.0
+   xcomposite >= 0.2
+   xcursor
+   xdamage
+   xext
+   xfixes
+   xi >= 1.6.0
    xkbfile
    xkeyboard-config
+   xkbcommon >= 0.4.3
    xkbcommon-x11
+   x11-xcb
    xcb-randr
 "
 
@@ -186,15 +192,11 @@ if test x$found_introspection != xno; then
   AC_SUBST(META_GIR)
 fi
 
-AC_PATH_PROG([WAYLAND_SCANNER],[wayland-scanner],[no])
-AS_IF([test "x$WAYLAND_SCANNER" = "xno"],
-  AC_MSG_ERROR([Could not find wayland-scanner in your PATH, required for parsing wayland extension protocols]))
-AC_SUBST([WAYLAND_SCANNER])
 AC_SUBST(XWAYLAND_PATH)
 
 PKG_CHECK_MODULES(MUTTER, $MUTTER_PC_MODULES)
 
-PKG_CHECK_MODULES(MUTTER_NATIVE_BACKEND, [libdrm libsystemd], [have_native_backend=yes], [have_native_backend=no])
+PKG_CHECK_MODULES(MUTTER_NATIVE_BACKEND, [libdrm libsystemd libinput], [have_native_backend=yes], [have_native_backend=no])
 if test $have_native_backend = yes; then
    AC_DEFINE([HAVE_NATIVE_BACKEND],[1],[Define if you want to enable the native (KMS) backend based on systemd])
 fi
@@ -202,6 +204,11 @@ AM_CONDITIONAL([HAVE_NATIVE_BACKEND],[test $have_native_backend = yes])
 
 PKG_CHECK_MODULES(MUTTER_WAYLAND, [clutter-wayland-1.0 clutter-wayland-compositor-1.0 wayland-server >= 1.5.90], [have_wayland=yes], [have_wayland=no])
 if test $have_wayland = yes; then
+   AC_PATH_PROG([WAYLAND_SCANNER],[wayland-scanner],[no])
+   AS_IF([test $WAYLAND_SCANNER = "no"],
+     AC_MSG_ERROR([Could not find wayland-scanner in your PATH, required for parsing wayland extension protocols]))
+   AC_SUBST([WAYLAND_SCANNER])
+
    AC_DEFINE([HAVE_WAYLAND],[1],[Define if you want to enable Wayland support])
 fi
 AM_CONDITIONAL([HAVE_WAYLAND],[test $have_wayland = yes])

po/gl.po

@@ -14,8 +14,8 @@ msgid ""
 msgstr ""
 "Project-Id-Version: gl\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2014-07-01 21:56+0200\n"
-"PO-Revision-Date: 2014-07-01 21:58+0200\n"
+"POT-Creation-Date: 2014-08-25 22:40+0200\n"
+"PO-Revision-Date: 2014-08-25 22:42+0200\n"
 "Last-Translator: Fran Dieguez <frandieguez@gnome.org>\n"
 "Language-Team: gnome-l10n-gl@gnome.org\n"
 "Language: gl\n"
@@ -86,66 +86,94 @@ msgid "Switch applications"
 msgstr "Cambiar entre aplicativos"
 
 #: ../data/50-mutter-navigation.xml.in.h:16
+msgid "Switch to previous application"
+msgstr "Cambiar ao aplicativo aplicativos"
+
+#: ../data/50-mutter-navigation.xml.in.h:17
 msgid "Switch windows"
 msgstr "Cambiar xanelas"
 
-#: ../data/50-mutter-navigation.xml.in.h:17
+#: ../data/50-mutter-navigation.xml.in.h:18
+msgid "Switch to previous window"
+msgstr "Cambiar á xanela anterior"
+
+#: ../data/50-mutter-navigation.xml.in.h:19
 msgid "Switch windows of an application"
 msgstr "Cambiar entre as xanelas dun aplicativo"
 
-#: ../data/50-mutter-navigation.xml.in.h:18
+#: ../data/50-mutter-navigation.xml.in.h:20
+msgid "Switch to previous window of an application"
+msgstr "Cambia á xanela anterior dun aplicativo"
+
+#: ../data/50-mutter-navigation.xml.in.h:21
 msgid "Switch system controls"
 msgstr "Cambiar entre os controles do sistema"
 
-#: ../data/50-mutter-navigation.xml.in.h:19
+#: ../data/50-mutter-navigation.xml.in.h:22
+msgid "Switch to previous system control"
+msgstr "Cambia ao control do sistema anterior"
+
+#: ../data/50-mutter-navigation.xml.in.h:23
 msgid "Switch windows directly"
 msgstr "Cambiar xanelas directamente"
 
-#: ../data/50-mutter-navigation.xml.in.h:20
+#: ../data/50-mutter-navigation.xml.in.h:24
+msgid "Switch directly to previous window"
+msgstr "Cambia directamente á xanela anterior"
+
+#: ../data/50-mutter-navigation.xml.in.h:25
 msgid "Switch windows of an app directly"
 msgstr "Cambiar entre as xanelas dun aplicativo directamente"
 
-#: ../data/50-mutter-navigation.xml.in.h:21
+#: ../data/50-mutter-navigation.xml.in.h:26
+msgid "Switch directly to previous window of an app"
+msgstr "Cambia directamente á xanela anterior do aplicativo"
+
+#: ../data/50-mutter-navigation.xml.in.h:27
 msgid "Switch system controls directly"
 msgstr "Cambiar entre os controles do sistema directamente"
 
-#: ../data/50-mutter-navigation.xml.in.h:22
+#: ../data/50-mutter-navigation.xml.in.h:28
+msgid "Switch directly to previous system control"
+msgstr "Cambiar directamente ao control do sistema anterior"
+
+#: ../data/50-mutter-navigation.xml.in.h:29
 msgid "Hide all normal windows"
 msgstr "Ocultar todas as xanelas normais"
 
-#: ../data/50-mutter-navigation.xml.in.h:23
+#: ../data/50-mutter-navigation.xml.in.h:30
 msgid "Switch to workspace 1"
 msgstr "Cambiar ao espazo de traballo 1"
 
-#: ../data/50-mutter-navigation.xml.in.h:24
+#: ../data/50-mutter-navigation.xml.in.h:31
 msgid "Switch to workspace 2"
 msgstr "Cambiar ao espazo de traballo 2"
 
-#: ../data/50-mutter-navigation.xml.in.h:25
+#: ../data/50-mutter-navigation.xml.in.h:32
 msgid "Switch to workspace 3"
 msgstr "Cambiar ao espazo de traballo 3"
 
-#: ../data/50-mutter-navigation.xml.in.h:26
+#: ../data/50-mutter-navigation.xml.in.h:33
 msgid "Switch to workspace 4"
 msgstr "Cambiar ao espazo de traballo 4"
 
-#: ../data/50-mutter-navigation.xml.in.h:27
+#: ../data/50-mutter-navigation.xml.in.h:34
 msgid "Switch to last workspace"
 msgstr "Cambiar ao último espazo de traballo"
 
-#: ../data/50-mutter-navigation.xml.in.h:28
+#: ../data/50-mutter-navigation.xml.in.h:35
 msgid "Move to workspace left"
 msgstr "Mover ao espazo da esquerda"
 
-#: ../data/50-mutter-navigation.xml.in.h:29
+#: ../data/50-mutter-navigation.xml.in.h:36
 msgid "Move to workspace right"
 msgstr "Mover ao espazo da dereita"
 
-#: ../data/50-mutter-navigation.xml.in.h:30
+#: ../data/50-mutter-navigation.xml.in.h:37
 msgid "Move to workspace above"
 msgstr "Mover ao espazo de arriba"
 
-#: ../data/50-mutter-navigation.xml.in.h:31
+#: ../data/50-mutter-navigation.xml.in.h:38
 msgid "Move to workspace below"
 msgstr "Mover ao espazo de traballo de abaixo"
 
@@ -434,7 +462,7 @@ msgstr "%s %s"
 
 #. This probably means that a non-WM compositor like xcompmgr is running;
 #. * we have no way to get it to exit
-#: ../src/compositor/compositor.c:464
+#: ../src/compositor/compositor.c:441
 #, c-format
 msgid ""
 "Another compositing manager is already running on screen %i on display \"%s"
@@ -443,24 +471,24 @@ msgstr ""
 "Xa se está a executar outro xestor de composición na pantalla %i na "
 "visualización «%s»"
 
-#: ../src/compositor/meta-background.c:990
+#: ../src/compositor/meta-background.c:1044
 msgid "background texture could not be created from file"
 msgstr "a textura do fondo non puido crearse desde o ficheiro"
 
-#: ../src/core/bell.c:215
+#: ../src/core/bell.c:185
 msgid "Bell event"
 msgstr "Evento de campá"
 
-#: ../src/core/delete.c:129
+#: ../src/core/delete.c:127
 #, c-format
 msgid "“%s” is not responding."
 msgstr "«%s» non está respondendo."
 
-#: ../src/core/delete.c:131
+#: ../src/core/delete.c:129
 msgid "Application is not responding."
 msgstr "O Aplicativo non está respondendo."
 
-#: ../src/core/delete.c:136
+#: ../src/core/delete.c:134
 msgid ""
 "You may choose to wait a short while for it to continue or force the "
 "application to quit entirely."
@@ -468,57 +496,57 @@ msgstr ""
 "Pode elixir esperar un momento para ver se continúa ou forzar ao aplicativo "
 "a pechar completamente."
 
-#: ../src/core/delete.c:143
+#: ../src/core/delete.c:141
 msgid "_Wait"
 msgstr "Espe_rar"
 
-#: ../src/core/delete.c:143
+#: ../src/core/delete.c:141
 msgid "_Force Quit"
 msgstr "_Forzar a saída"
 
-#: ../src/core/display.c:448
+#: ../src/core/display.c:547
 #, c-format
 msgid "Failed to open X Window System display '%s'\n"
 msgstr "Produciuse un erro ao abrir a visualización do X Window System «%s»\n"
 
-#: ../src/core/main.c:172
+#: ../src/core/main.c:176
 msgid "Disable connection to session manager"
 msgstr "Desactivar a conexión ao xestor de sesión"
 
-#: ../src/core/main.c:178
+#: ../src/core/main.c:182
 msgid "Replace the running window manager"
 msgstr "Substituír o xestor de xanelas en execución"
 
-#: ../src/core/main.c:184
+#: ../src/core/main.c:188
 msgid "Specify session management ID"
 msgstr "Especificar o ID de xestión de sesión"
 
-#: ../src/core/main.c:189
+#: ../src/core/main.c:193
 msgid "X Display to use"
 msgstr "Pantalla X que se vai usar"
 
-#: ../src/core/main.c:195
+#: ../src/core/main.c:199
 msgid "Initialize session from savefile"
 msgstr "Inicializar sesión desde o ficheiro de salvagarda"
 
-#: ../src/core/main.c:201
+#: ../src/core/main.c:205
 msgid "Make X calls synchronous"
 msgstr "Facer que as chamadas a X sexan sincrónicas"
 
-#: ../src/core/main.c:207
+#: ../src/core/main.c:212
 msgid "Run as a wayland compositor"
 msgstr "Executar como compositor de wayland"
 
-#: ../src/core/main.c:214
+#: ../src/core/main.c:220
 msgid "Run as a full display server, rather than nested"
 msgstr "Executar como un servidor de pantalla completo, fronte a un aniñado"
 
-#: ../src/core/main.c:448
+#: ../src/core/main.c:459
 #, c-format
 msgid "Failed to scan themes directory: %s\n"
 msgstr "Produciuse un erro ao dixitalizar o directorio de temas: %s\n"
 
-#: ../src/core/main.c:464
+#: ../src/core/main.c:475
 #, c-format
 msgid ""
 "Could not find a theme! Be sure %s exists and contains the usual themes.\n"
@@ -549,17 +577,17 @@ msgstr "Imprimir versión"
 msgid "Mutter plugin to use"
 msgstr "Engadido de mutter que usar"
 
-#: ../src/core/prefs.c:2086
+#: ../src/core/prefs.c:2101
 #, c-format
 msgid "Workspace %d"
 msgstr "Espazo de traballo %d"
 
-#: ../src/core/screen.c:539
+#: ../src/core/screen.c:548
 #, c-format
 msgid "Screen %d on display '%s' is invalid\n"
 msgstr "A pantalla %d na visualización «%s» non é válida\n"
 
-#: ../src/core/screen.c:555
+#: ../src/core/screen.c:564
 #, c-format
 msgid ""
 "Screen %d on display \"%s\" already has a window manager; try using the --"
@@ -568,7 +596,7 @@ msgstr ""
 "A visualización %d na pantalla «%s» ten xa un xestor de xanelas, tente usar "
 "a opción --replace para substituír o xestor de xanelas.\n"
 
-#: ../src/core/screen.c:660
+#: ../src/core/screen.c:657
 #, c-format
 msgid "Screen %d on display \"%s\" already has a window manager\n"
 msgstr "A visualización %d na pantalla «%s» ten xa un xestor de xanelas\n"
@@ -585,48 +613,48 @@ msgstr "Mutter foi compilado sen compatibilidade para o modo detallado\n"
 msgid "%d x %d"
 msgstr "%d x %d"
 
-#: ../src/ui/theme.c:232
+#: ../src/ui/theme.c:233
 msgid "top"
 msgstr "superior"
 
-#: ../src/ui/theme.c:234
+#: ../src/ui/theme.c:235
 msgid "bottom"
 msgstr "inferior"
 
-#: ../src/ui/theme.c:236
+#: ../src/ui/theme.c:237
 msgid "left"
 msgstr "esquerda"
 
-#: ../src/ui/theme.c:238
+#: ../src/ui/theme.c:239
 msgid "right"
 msgstr "dereita"
 
-#: ../src/ui/theme.c:266
+#: ../src/ui/theme.c:267
 #, c-format
 msgid "frame geometry does not specify \"%s\" dimension"
 msgstr "a xeometría do marco non especifica a dimensión «%s»"
 
-#: ../src/ui/theme.c:285
+#: ../src/ui/theme.c:286
 #, c-format
 msgid "frame geometry does not specify dimension \"%s\" for border \"%s\""
 msgstr "a xeometría do marco non especifica a dimensión «%s» para o bordo «%s»"
 
-#: ../src/ui/theme.c:322
+#: ../src/ui/theme.c:323
 #, c-format
 msgid "Button aspect ratio %g is not reasonable"
 msgstr "A proporción de aspecto do botón %g non é razoábel"
 
-#: ../src/ui/theme.c:334
+#: ../src/ui/theme.c:335
 #, c-format
 msgid "Frame geometry does not specify size of buttons"
 msgstr "A xeometría do marco non especifica o tamaño dos botóns"
 
-#: ../src/ui/theme.c:1060
+#: ../src/ui/theme.c:1061
 #, c-format
 msgid "Gradients should have at least two colors"
 msgstr "As gradacións deben ter polo menos dúas cores"
 
-#: ../src/ui/theme.c:1210
+#: ../src/ui/theme.c:1211
 #, c-format
 msgid ""
 "GTK custom color specification must have color name and fallback in "
@@ -636,7 +664,7 @@ msgstr ""
 "entre parénteses, por exemplo: gtk:custom(foo,bar); non foi posíbel analizar "
 "«%s»."
 
-#: ../src/ui/theme.c:1226
+#: ../src/ui/theme.c:1227
 #, c-format
 msgid ""
 "Invalid character '%c' in color_name parameter of gtk:custom, only A-Za-z0-9-"
@@ -645,7 +673,7 @@ msgstr ""
 "O carácter «%c» non é válido no parámetro «color_name» de «gtk:custom», só "
 "«A-Za-z0-9» son válidos"
 
-#: ../src/ui/theme.c:1240
+#: ../src/ui/theme.c:1241
 #, c-format
 msgid ""
 "Gtk:custom format is \"gtk:custom(color_name,fallback)\", \"%s\" does not "
@@ -654,7 +682,7 @@ msgstr ""
 "O formato de «gtk:custom» é «gtk:custom(nome_de_cor,nome_alternativo», «%s» "
 "non respecta o formato"
 
-#: ../src/ui/theme.c:1285
+#: ../src/ui/theme.c:1286
 #, c-format
 msgid ""
 "GTK color specification must have the state in brackets, e.g. gtk:fg[NORMAL] "
@@ -663,7 +691,7 @@ msgstr ""
 "A especificación de cor do GTK debe ter o estado entre parénteses, exemplo. "
 "gtk:fg[NORMAL] onde NORMAL é o estado; non foi posíbel analizar «%s»"
 
-#: ../src/ui/theme.c:1299
+#: ../src/ui/theme.c:1300
 #, c-format
 msgid ""
 "GTK color specification must have a close bracket after the state, e.g. gtk:"
@@ -673,17 +701,17 @@ msgstr ""
 "estado, exemplo. gtk:fg[NORMAL] onde NORMAL é o estado; non foi posíbel "
 "analizar «%s»"
 
-#: ../src/ui/theme.c:1310
+#: ../src/ui/theme.c:1311
 #, c-format
 msgid "Did not understand state \"%s\" in color specification"
 msgstr "Non se entende o estado «%s» na especificación da cor"
 
-#: ../src/ui/theme.c:1323
+#: ../src/ui/theme.c:1324
 #, c-format
 msgid "Did not understand color component \"%s\" in color specification"
 msgstr "Non se entende o compoñente de cor «%s» na especificación da cor"
 
-#: ../src/ui/theme.c:1351
+#: ../src/ui/theme.c:1352
 #, c-format
 msgid ""
 "Blend format is \"blend/bg_color/fg_color/alpha\", \"%s\" does not fit the "
@@ -692,17 +720,17 @@ msgstr ""
 "O formato de blend é «blend/bg_color/fg_color/alpha», «%s»non coincide co "
 "formato"
 
-#: ../src/ui/theme.c:1362
+#: ../src/ui/theme.c:1363
 #, c-format
 msgid "Could not parse alpha value \"%s\" in blended color"
 msgstr "Non foi posíbel analizar o valor alfa «%s» na cor mesturada"
 
-#: ../src/ui/theme.c:1372
+#: ../src/ui/theme.c:1373
 #, c-format
 msgid "Alpha value \"%s\" in blended color is not between 0.0 and 1.0"
 msgstr "O valor alfa «%s» na cor mesturada non está entre 0.0 e 1.0"
 
-#: ../src/ui/theme.c:1418
+#: ../src/ui/theme.c:1419
 #, c-format
 msgid ""
 "Shade format is \"shade/base_color/factor\", \"%s\" does not fit the format"
@@ -710,28 +738,28 @@ msgstr ""
 "O formato de sombreado é \"shade/base_color/factor\", «%s» non coincide co "
 "formato"
 
-#: ../src/ui/theme.c:1429
+#: ../src/ui/theme.c:1430
 #, c-format
 msgid "Could not parse shade factor \"%s\" in shaded color"
 msgstr "Non foi posíbel analizar o factor de sombreado «%s» na cor sombreada"
 
-#: ../src/ui/theme.c:1439
+#: ../src/ui/theme.c:1440
 #, c-format
 msgid "Shade factor \"%s\" in shaded color is negative"
 msgstr "O factor de sombreado «%s» na cor sombreada é negativo"
 
-#: ../src/ui/theme.c:1468
+#: ../src/ui/theme.c:1469
 #, c-format
 msgid "Could not parse color \"%s\""
 msgstr "Non foi posíbel analizar a cor «%s»"
 
-#: ../src/ui/theme.c:1777
+#: ../src/ui/theme.c:1778
 #, c-format
 msgid "Coordinate expression contains character '%s' which is not allowed"
 msgstr ""
 "A expresión de coordenadas contén un carácter «%s» que non está permitido"
 
-#: ../src/ui/theme.c:1804
+#: ../src/ui/theme.c:1805
 #, c-format
 msgid ""
 "Coordinate expression contains floating point number '%s' which could not be "
@@ -740,14 +768,14 @@ msgstr ""
 "A expresión de coordenadas contén un número de coma flotante «%s» que non "
 "foi posíbel analizar"
 
-#: ../src/ui/theme.c:1818
+#: ../src/ui/theme.c:1819
 #, c-format
 msgid "Coordinate expression contains integer '%s' which could not be parsed"
 msgstr ""
 "A expresión de coordenadas contén un enteiro «%s» que non foi posíbel "
 "analizar"
 
-#: ../src/ui/theme.c:1939
+#: ../src/ui/theme.c:1940
 #, c-format
 msgid ""
 "Coordinate expression contained unknown operator at the start of this text: "
@@ -756,17 +784,17 @@ msgstr ""
 "A expresión de coordenadas contén un operador non válido ao inicio do seu "
 "texto: «%s»"
 
-#: ../src/ui/theme.c:1996
+#: ../src/ui/theme.c:1997
 #, c-format
 msgid "Coordinate expression was empty or not understood"
 msgstr "A expresión de coordenadas está baleira ou non se entendeu"
 
-#: ../src/ui/theme.c:2109 ../src/ui/theme.c:2119 ../src/ui/theme.c:2153
+#: ../src/ui/theme.c:2110 ../src/ui/theme.c:2120 ../src/ui/theme.c:2154
 #, c-format
 msgid "Coordinate expression results in division by zero"
 msgstr "A expresión de coordenadas resultou nun erro de división por cero"
 
-#: ../src/ui/theme.c:2161
+#: ../src/ui/theme.c:2162
 #, c-format
 msgid ""
 "Coordinate expression tries to use mod operator on a floating-point number"
@@ -774,25 +802,25 @@ msgstr ""
 "A expresión de coordenadas tentou usar un operador mod cun número de coma "
 "flotante"
 
-#: ../src/ui/theme.c:2217
+#: ../src/ui/theme.c:2218
 #, c-format
 msgid ""
 "Coordinate expression has an operator \"%s\" where an operand was expected"
 msgstr ""
 "A expresión de coordenadas ten un operador «%s» onde se esperaba un operando"
 
-#: ../src/ui/theme.c:2226
+#: ../src/ui/theme.c:2227
 #, c-format
 msgid "Coordinate expression had an operand where an operator was expected"
 msgstr ""
 "A expresión de coordenadas ten un operando onde se esperaba un operador"
 
-#: ../src/ui/theme.c:2234
+#: ../src/ui/theme.c:2235
 #, c-format
 msgid "Coordinate expression ended with an operator instead of an operand"
 msgstr "A expresión de coordenadas remata cun operador en vez dun operando"
 
-#: ../src/ui/theme.c:2244
+#: ../src/ui/theme.c:2245
 #, c-format
 msgid ""
 "Coordinate expression has operator \"%c\" following operator \"%c\" with no "
@@ -801,42 +829,42 @@ msgstr ""
 "A expresión de coordenadas ten un operador \"%c\" seguido do operador \"%c\" "
 "sen un operando entre eles"
 
-#: ../src/ui/theme.c:2395 ../src/ui/theme.c:2440
+#: ../src/ui/theme.c:2396 ../src/ui/theme.c:2441
 #, c-format
 msgid "Coordinate expression had unknown variable or constant \"%s\""
 msgstr ""
 "A expresión de coordenadas ten unha variábel ou constante descoñecida «%s»"
 
-#: ../src/ui/theme.c:2494
+#: ../src/ui/theme.c:2495
 #, c-format
 msgid "Coordinate expression parser overflowed its buffer."
 msgstr "O analizador da expresión de coordenadas desbordou o seu búfer."
 
-#: ../src/ui/theme.c:2523
+#: ../src/ui/theme.c:2524
 #, c-format
 msgid "Coordinate expression had a close parenthesis with no open parenthesis"
 msgstr ""
 "A expresión de coordenadas ten unha paréntese pechada sen unha paréntese "
 "aberta"
 
-#: ../src/ui/theme.c:2587
+#: ../src/ui/theme.c:2588
 #, c-format
 msgid "Coordinate expression had an open parenthesis with no close parenthesis"
 msgstr ""
 "A expresión de coordenadas ten unha paréntese aberta sen unha paréntese "
 "pechada"
 
-#: ../src/ui/theme.c:2598
+#: ../src/ui/theme.c:2599
 #, c-format
 msgid "Coordinate expression doesn't seem to have any operators or operands"
 msgstr "A expresión de coordenadas non parece ter nin operadores nin operandos"
 
-#: ../src/ui/theme.c:2811 ../src/ui/theme.c:2831 ../src/ui/theme.c:2851
+#: ../src/ui/theme.c:2812 ../src/ui/theme.c:2832 ../src/ui/theme.c:2852
 #, c-format
 msgid "Theme contained an expression that resulted in an error: %s\n"
 msgstr "O tema contiña unha expresión que resultou ser un erro: %s\n"
 
-#: ../src/ui/theme.c:4466
+#: ../src/ui/theme.c:4455
 #, c-format
 msgid ""
 "<button function=\"%s\" state=\"%s\" draw_ops=\"whatever\"/> must be "
@@ -845,24 +873,24 @@ msgstr ""
 "<button function=«%s» state=«%s» draw_ops=\"whatever\"/> débese especificar "
 "para este estilo de marco"
 
-#: ../src/ui/theme.c:4981 ../src/ui/theme.c:5006
+#: ../src/ui/theme.c:4970 ../src/ui/theme.c:4995
 #, c-format
 msgid ""
 "Missing <frame state=\"%s\" resize=\"%s\" focus=\"%s\" style=\"whatever\"/>"
 msgstr "Falta <frame state=«%s» resize=«%s» focus=«%s» style=\"whatever\"/>"
 
-#: ../src/ui/theme.c:5052
+#: ../src/ui/theme.c:5041
 #, c-format
 msgid "Failed to load theme \"%s\": %s\n"
 msgstr "Produciuse un erro ao cargar o tema «%s»: %s\n"
 
-#: ../src/ui/theme.c:5188 ../src/ui/theme.c:5195 ../src/ui/theme.c:5202
-#: ../src/ui/theme.c:5209 ../src/ui/theme.c:5216
+#: ../src/ui/theme.c:5177 ../src/ui/theme.c:5184 ../src/ui/theme.c:5191
+#: ../src/ui/theme.c:5198 ../src/ui/theme.c:5205
 #, c-format
 msgid "No <%s> set for theme \"%s\""
 msgstr "Non se configurou <%s> para o tema «%s»"
 
-#: ../src/ui/theme.c:5224
+#: ../src/ui/theme.c:5213
 #, c-format
 msgid ""
 "No frame style set for window type \"%s\" in theme \"%s\", add a <window "
@@ -871,7 +899,7 @@ msgstr ""
 "Non hai un estilo de marco para o tipo de xanela «%s» no tema «%s», engada "
 "un elemento <window type=«%s» style_set=\"whatever\"/>"
 
-#: ../src/ui/theme.c:5631 ../src/ui/theme.c:5693 ../src/ui/theme.c:5756
+#: ../src/ui/theme.c:5620 ../src/ui/theme.c:5682 ../src/ui/theme.c:5745
 #, c-format
 msgid ""
 "User-defined constants must begin with a capital letter; \"%s\" does not"
@@ -879,7 +907,7 @@ msgstr ""
 "As constantes definidas polo usuario deben comezar cunha letra maiúscula; "
 "«%s» non o fai"
 
-#: ../src/ui/theme.c:5639 ../src/ui/theme.c:5701 ../src/ui/theme.c:5764
+#: ../src/ui/theme.c:5628 ../src/ui/theme.c:5690 ../src/ui/theme.c:5753
 #, c-format
 msgid "Constant \"%s\" has already been defined"
 msgstr "A constante «%s» xa foi definida"
@@ -1279,7 +1307,7 @@ msgstr ""
 "Estas xanelas non soportan &quot;save current setup&quot; e terán que "
 "reiniciarse manualmente a próxima vez que inicie a sesión."
 
-#: ../src/x11/window-props.c:465
+#: ../src/x11/window-props.c:515
 #, c-format
 msgid "%s (on %s)"
 msgstr "%s (en %s)"

po/nb.po

@@ -6,8 +6,8 @@ msgid ""
 msgstr ""
 "Project-Id-Version: mutter 3.13.x\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2014-07-23 15:01+0200\n"
-"PO-Revision-Date: 2014-07-23 15:02+0200\n"
+"POT-Creation-Date: 2014-08-23 13:36+0200\n"
+"PO-Revision-Date: 2014-08-23 13:37+0200\n"
 "Last-Translator: Kjartan Maraas <kmaraas@gnome.org>\n"
 "Language-Team: Norwegian bokmål <i18n-no@lister.ping.uio.no>\n"
 "Language: \n"
@@ -76,66 +76,94 @@ msgid "Switch applications"
 msgstr "Bytt programmer"
 
 #: ../data/50-mutter-navigation.xml.in.h:16
+msgid "Switch to previous application"
+msgstr "Bytt til forrige program"
+
+#: ../data/50-mutter-navigation.xml.in.h:17
 msgid "Switch windows"
 msgstr "Bytt vinduer"
 
-#: ../data/50-mutter-navigation.xml.in.h:17
+#: ../data/50-mutter-navigation.xml.in.h:18
+msgid "Switch to previous window"
+msgstr "Bytt forrige vindu"
+
+#: ../data/50-mutter-navigation.xml.in.h:19
 msgid "Switch windows of an application"
 msgstr "Bytt mellom et programs vinduer"
 
-#: ../data/50-mutter-navigation.xml.in.h:18
+#: ../data/50-mutter-navigation.xml.in.h:20
+msgid "Switch to previous window of an application"
+msgstr "Bytt til forrige vindu i et program"
+
+#: ../data/50-mutter-navigation.xml.in.h:21
 msgid "Switch system controls"
 msgstr "Bytt systemkontroller"
 
-#: ../data/50-mutter-navigation.xml.in.h:19
+#: ../data/50-mutter-navigation.xml.in.h:22
+msgid "Switch to previous system control"
+msgstr "Bytt til forrige systemkontroll"
+
+#: ../data/50-mutter-navigation.xml.in.h:23
 msgid "Switch windows directly"
 msgstr "Bytt vinduer direkte"
 
-#: ../data/50-mutter-navigation.xml.in.h:20
+#: ../data/50-mutter-navigation.xml.in.h:24
+msgid "Switch directly to previous window"
+msgstr "Bytt direkte til forrige vindu"
+
+#: ../data/50-mutter-navigation.xml.in.h:25
 msgid "Switch windows of an app directly"
 msgstr "Bytt mellom et programs vinduer direkte"
 
-#: ../data/50-mutter-navigation.xml.in.h:21
+#: ../data/50-mutter-navigation.xml.in.h:26
+msgid "Switch directly to previous window of an app"
+msgstr "Bytt direkte til forrive vindu i et program"
+
+#: ../data/50-mutter-navigation.xml.in.h:27
 msgid "Switch system controls directly"
 msgstr "Bytt systemkontroller direkte"
 
-#: ../data/50-mutter-navigation.xml.in.h:22
+#: ../data/50-mutter-navigation.xml.in.h:28
+msgid "Switch directly to previous system control"
+msgstr "Bytt direkte til forrige systemkontroll"
+
+#: ../data/50-mutter-navigation.xml.in.h:29
 msgid "Hide all normal windows"
 msgstr "Skjul alle normale vinduer"
 
-#: ../data/50-mutter-navigation.xml.in.h:23
+#: ../data/50-mutter-navigation.xml.in.h:30
 msgid "Switch to workspace 1"
 msgstr "Bytt til arbeidsområde 1"
 
-#: ../data/50-mutter-navigation.xml.in.h:24
+#: ../data/50-mutter-navigation.xml.in.h:31
 msgid "Switch to workspace 2"
 msgstr "Bytt til arbeidsområde 2"
 
-#: ../data/50-mutter-navigation.xml.in.h:25
+#: ../data/50-mutter-navigation.xml.in.h:32
 msgid "Switch to workspace 3"
 msgstr "Bytt til arbeidsområde 3"
 
-#: ../data/50-mutter-navigation.xml.in.h:26
+#: ../data/50-mutter-navigation.xml.in.h:33
 msgid "Switch to workspace 4"
 msgstr "Bytt til arbeidsområde 4"
 
-#: ../data/50-mutter-navigation.xml.in.h:27
+#: ../data/50-mutter-navigation.xml.in.h:34
 msgid "Switch to last workspace"
 msgstr "Bytt til siste arbeidsområde"
 
-#: ../data/50-mutter-navigation.xml.in.h:28
+#: ../data/50-mutter-navigation.xml.in.h:35
 msgid "Move to workspace left"
 msgstr "Flytt til arbeidsområdet til venstre"
 
-#: ../data/50-mutter-navigation.xml.in.h:29
+#: ../data/50-mutter-navigation.xml.in.h:36
 msgid "Move to workspace right"
 msgstr "Flytt til arbeidsområdet til høyre"
 
-#: ../data/50-mutter-navigation.xml.in.h:30
+#: ../data/50-mutter-navigation.xml.in.h:37
 msgid "Move to workspace above"
 msgstr "Flytt til arbeidsområdet over"
 
-#: ../data/50-mutter-navigation.xml.in.h:31
+#: ../data/50-mutter-navigation.xml.in.h:38
 msgid "Move to workspace below"
 msgstr "Flytt til arbeidsområdet under"
 
@@ -417,18 +445,18 @@ msgstr "%s %s"
 
 #. This probably means that a non-WM compositor like xcompmgr is running;
 #. * we have no way to get it to exit
-#: ../src/compositor/compositor.c:445
+#: ../src/compositor/compositor.c:441
 #, c-format
 msgid ""
 "Another compositing manager is already running on screen %i on display \"%s"
 "\"."
 msgstr "En annen compositing manager kjører skjerm %i på display «%s»."
 
-#: ../src/compositor/meta-background.c:990
+#: ../src/compositor/meta-background.c:1044
 msgid "background texture could not be created from file"
 msgstr "bakgrunnstekstur kunne ikke lages fra fil"
 
-#: ../src/core/bell.c:215
+#: ../src/core/bell.c:185
 msgid "Bell event"
 msgstr "Klokkehendelse"
 
@@ -457,49 +485,49 @@ msgstr "_Vent"
 msgid "_Force Quit"
 msgstr "_Tvungen nedstenging"
 
-#: ../src/core/display.c:519
+#: ../src/core/display.c:547
 #, c-format
 msgid "Failed to open X Window System display '%s'\n"
 msgstr "Feil under åpning av X Window System skjerm «%s»\n"
 
-#: ../src/core/main.c:172
+#: ../src/core/main.c:176
 msgid "Disable connection to session manager"
 msgstr "Deaktiver tilkobling til sesjonshåndtereren"
 
-#: ../src/core/main.c:178
+#: ../src/core/main.c:182
 msgid "Replace the running window manager"
 msgstr "Erstatt kjørende vindushåndterer"
 
-#: ../src/core/main.c:184
+#: ../src/core/main.c:188
 msgid "Specify session management ID"
 msgstr "Oppgi sesjonshåndterings-ID"
 
-#: ../src/core/main.c:189
+#: ../src/core/main.c:193
 msgid "X Display to use"
 msgstr "X-skjerm som skal brukes"
 
-#: ../src/core/main.c:195
+#: ../src/core/main.c:199
 msgid "Initialize session from savefile"
 msgstr "Initier sesjonen fra en lagret fil"
 
-#: ../src/core/main.c:201
+#: ../src/core/main.c:205
 msgid "Make X calls synchronous"
 msgstr "Gjør X-kall synkrone"
 
-#: ../src/core/main.c:207
+#: ../src/core/main.c:212
 msgid "Run as a wayland compositor"
 msgstr "Kjør som en wayland-kompositør"
 
-#: ../src/core/main.c:214
+#: ../src/core/main.c:220
 msgid "Run as a full display server, rather than nested"
 msgstr "Kjør som en full skjermtjener, heller enn nøstet"
 
-#: ../src/core/main.c:450
+#: ../src/core/main.c:459
 #, c-format
 msgid "Failed to scan themes directory: %s\n"
 msgstr "Feil under søk i temakatalog: %s\n"
 
-#: ../src/core/main.c:466
+#: ../src/core/main.c:475
 #, c-format
 msgid ""
 "Could not find a theme! Be sure %s exists and contains the usual themes.\n"
@@ -529,17 +557,17 @@ msgstr "Skriv versjonsnummer"
 msgid "Mutter plugin to use"
 msgstr "Mutter-tillegg som skal brukes"
 
-#: ../src/core/prefs.c:2086
+#: ../src/core/prefs.c:2101
 #, c-format
 msgid "Workspace %d"
 msgstr "Arbeidsområde %d"
 
-#: ../src/core/screen.c:553
+#: ../src/core/screen.c:548
 #, c-format
 msgid "Screen %d on display '%s' is invalid\n"
 msgstr "Skjerm %d på display «%s» er ugyldig\n"
 
-#: ../src/core/screen.c:569
+#: ../src/core/screen.c:564
 #, c-format
 msgid ""
 "Screen %d on display \"%s\" already has a window manager; try using the --"
@@ -548,7 +576,7 @@ msgstr ""
 "Skjerm %d på display «%s» har allerede en vindushåndterer; prøv å bruke "
 "flagget --replace for å erstatte aktiv vindushåndterer.\n"
 
-#: ../src/core/screen.c:662
+#: ../src/core/screen.c:657
 #, c-format
 msgid "Screen %d on display \"%s\" already has a window manager\n"
 msgstr "Skjerm %d på display «%s» har allerede en vinduhåndterer\n"
@@ -1237,7 +1265,7 @@ msgstr ""
 "Disse vinduene støtter ikke &quot;lagre aktiv konfigurasjon&quot;og vil "
 "måtte startes på nytt manuelt neste gang du logger inn."
 
-#: ../src/x11/window-props.c:513
+#: ../src/x11/window-props.c:515
 #, c-format
 msgid "%s (on %s)"
 msgstr "%s (på %s)"

po/pt_BR.po

@@ -21,8 +21,8 @@ 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: 2014-07-18 09:51+0000\n"
-"PO-Revision-Date: 2014-07-18 14:53-0300\n"
+"POT-Creation-Date: 2014-08-22 09:52+0000\n"
+"PO-Revision-Date: 2014-08-22 16:18-0300\n"
 "Last-Translator: Enrico Nicoletto <liverig@gmail.com>\n"
 "Language-Team: Brazilian Portuguese <gnome-pt_br-list@gnome.org>\n"
 "Language: pt_BR\n"
@@ -53,7 +53,6 @@ msgid "Move window to workspace 4"
 msgstr "Mover a janela para o espaço de trabalho 4"
 
 #: ../data/50-mutter-navigation.xml.in.h:6
-#| msgid "Move window to workspace 1"
 msgid "Move window to last workspace"
 msgstr "Mover a janela para o último espaço de trabalho"
 
@@ -98,67 +97,100 @@ msgid "Switch applications"
 msgstr "Alternar aplicativos"
 
 #: ../data/50-mutter-navigation.xml.in.h:16
+#| msgid "Switch applications"
+msgid "Switch to previous application"
+msgstr "Alternar para o aplicativo anterior"
+
+#: ../data/50-mutter-navigation.xml.in.h:17
 msgid "Switch windows"
 msgstr "Alternar janelas"
 
-#: ../data/50-mutter-navigation.xml.in.h:17
+#: ../data/50-mutter-navigation.xml.in.h:18
+#| msgid "Switch windows"
+msgid "Switch to previous window"
+msgstr "Alternar para a janela anterior"
+
+#: ../data/50-mutter-navigation.xml.in.h:19
 msgid "Switch windows of an application"
 msgstr "Alternar as janelas de um aplicativo"
 
-#: ../data/50-mutter-navigation.xml.in.h:18
+#: ../data/50-mutter-navigation.xml.in.h:20
+#| msgid "Switch windows of an application"
+msgid "Switch to previous window of an application"
+msgstr "Alternar para a janela anterior de um aplicativo"
+
+#: ../data/50-mutter-navigation.xml.in.h:21
 msgid "Switch system controls"
 msgstr "Alternar os controles de sistema"
 
-#: ../data/50-mutter-navigation.xml.in.h:19
+#: ../data/50-mutter-navigation.xml.in.h:22
+#| msgid "Switch system controls"
+msgid "Switch to previous system control"
+msgstr "Alternar para o controle de sistema anterior"
+
+#: ../data/50-mutter-navigation.xml.in.h:23
 msgid "Switch windows directly"
 msgstr "Alternar as janelas diretamente"
 
-#: ../data/50-mutter-navigation.xml.in.h:20
+#: ../data/50-mutter-navigation.xml.in.h:24
+msgid "Switch directly to previous window"
+msgstr "Alternar diretamente para a janela anterior"
+
+#: ../data/50-mutter-navigation.xml.in.h:25
 msgid "Switch windows of an app directly"
 msgstr "Alternar as janelas de um aplicativo diretamente"
 
-#: ../data/50-mutter-navigation.xml.in.h:21
+#: ../data/50-mutter-navigation.xml.in.h:26
+#| msgid "Switch windows of an application"
+msgid "Switch directly to previous window of an app"
+msgstr "Alternar diretamente para a janela anterior de um aplicativo"
+
+#: ../data/50-mutter-navigation.xml.in.h:27
 msgid "Switch system controls directly"
 msgstr "Alternar os controles de sistema diretamente"
 
-#: ../data/50-mutter-navigation.xml.in.h:22
+#: ../data/50-mutter-navigation.xml.in.h:28
+#| msgid "Switch system controls"
+msgid "Switch directly to previous system control"
+msgstr "Alternar diretamente para o controle de sistema anterior"
+
+#: ../data/50-mutter-navigation.xml.in.h:29
 msgid "Hide all normal windows"
 msgstr "Ocultar todas as janelas normais"
 
-#: ../data/50-mutter-navigation.xml.in.h:23
+#: ../data/50-mutter-navigation.xml.in.h:30
 msgid "Switch to workspace 1"
 msgstr "Trocar para o espaço de trabalho 1"
 
-#: ../data/50-mutter-navigation.xml.in.h:24
+#: ../data/50-mutter-navigation.xml.in.h:31
 msgid "Switch to workspace 2"
 msgstr "Trocar para o espaço de trabalho 2"
 
-#: ../data/50-mutter-navigation.xml.in.h:25
+#: ../data/50-mutter-navigation.xml.in.h:32
 msgid "Switch to workspace 3"
 msgstr "Trocar para o espaço de trabalho 3"
 
-#: ../data/50-mutter-navigation.xml.in.h:26
+#: ../data/50-mutter-navigation.xml.in.h:33
 msgid "Switch to workspace 4"
 msgstr "Trocar para o espaço de trabalho 4"
 
-#: ../data/50-mutter-navigation.xml.in.h:27
-#| msgid "Switch to workspace 1"
+#: ../data/50-mutter-navigation.xml.in.h:34
 msgid "Switch to last workspace"
 msgstr "Trocar para o último espaço de trabalho"
 
-#: ../data/50-mutter-navigation.xml.in.h:28
+#: ../data/50-mutter-navigation.xml.in.h:35
 msgid "Move to workspace left"
 msgstr "Move para o espaço de trabalho à esquerda"
 
-#: ../data/50-mutter-navigation.xml.in.h:29
+#: ../data/50-mutter-navigation.xml.in.h:36
 msgid "Move to workspace right"
 msgstr "Move para o espaço de trabalho à direita"
 
-#: ../data/50-mutter-navigation.xml.in.h:30
+#: ../data/50-mutter-navigation.xml.in.h:37
 msgid "Move to workspace above"
 msgstr "Mover para o espaço de trabalho acima"
 
-#: ../data/50-mutter-navigation.xml.in.h:31
+#: ../data/50-mutter-navigation.xml.in.h:38
 msgid "Move to workspace below"
 msgstr "Mover para o espaço de trabalho abaixo"
 
@@ -399,37 +431,30 @@ msgid "Cancel tab popup"
 msgstr "Cancelar aba instantânea"
 
 #: ../data/org.gnome.mutter.wayland.gschema.xml.in.h:1
-#| msgid "Switch to workspace 1"
 msgid "Switch to VT 1"
 msgstr "Trocar para o VT 1"
 
 #: ../data/org.gnome.mutter.wayland.gschema.xml.in.h:2
-#| msgid "Switch to workspace 2"
 msgid "Switch to VT 2"
 msgstr "Trocar para o VT 2"
 
 #: ../data/org.gnome.mutter.wayland.gschema.xml.in.h:3
-#| msgid "Switch to workspace 3"
 msgid "Switch to VT 3"
 msgstr "Trocar para o VT 3"
 
 #: ../data/org.gnome.mutter.wayland.gschema.xml.in.h:4
-#| msgid "Switch to workspace 4"
 msgid "Switch to VT 4"
 msgstr "Trocar para o VT 4"
 
 #: ../data/org.gnome.mutter.wayland.gschema.xml.in.h:5
-#| msgid "Switch to workspace 5"
 msgid "Switch to VT 5"
 msgstr "Trocar para o VT 5"
 
 #: ../data/org.gnome.mutter.wayland.gschema.xml.in.h:6
-#| msgid "Switch to workspace 6"
 msgid "Switch to VT 6"
 msgstr "Trocar para o VT 6"
 
 #: ../data/org.gnome.mutter.wayland.gschema.xml.in.h:7
-#| msgid "Switch to workspace 7"
 msgid "Switch to VT 7"
 msgstr "Trocar para o VT 7"
 
@@ -455,7 +480,7 @@ msgstr "%s de %s"
 
 #. This probably means that a non-WM compositor like xcompmgr is running;
 #. * we have no way to get it to exit
-#: ../src/compositor/compositor.c:445
+#: ../src/compositor/compositor.c:441
 #, c-format
 msgid ""
 "Another compositing manager is already running on screen %i on display \"%s"
@@ -463,11 +488,11 @@ msgid ""
 msgstr ""
 "Outro compositor de janelas está em execução na tela %i na área \"%s\"."
 
-#: ../src/compositor/meta-background.c:990
+#: ../src/compositor/meta-background.c:1044
 msgid "background texture could not be created from file"
 msgstr "textura de plano de fundo não pôde ser criado de arquivo"
 
-#: ../src/core/bell.c:215
+#: ../src/core/bell.c:185
 msgid "Bell event"
 msgstr "Evento de som"
 
@@ -496,49 +521,49 @@ msgstr "_Esperar"
 msgid "_Force Quit"
 msgstr "_Forçar sair"
 
-#: ../src/core/display.c:519
+#: ../src/core/display.c:547
 #, c-format
 msgid "Failed to open X Window System display '%s'\n"
 msgstr "Falha ao abrir a exibição \"%s\" do sistema de janelas X\n"
 
-#: ../src/core/main.c:172
+#: ../src/core/main.c:176
 msgid "Disable connection to session manager"
 msgstr "Desabilitar a conexão com o gerenciador de sessões"
 
-#: ../src/core/main.c:178
+#: ../src/core/main.c:182
 msgid "Replace the running window manager"
 msgstr "Substituir o gerenciador de janelas em execução"
 
-#: ../src/core/main.c:184
+#: ../src/core/main.c:188
 msgid "Specify session management ID"
 msgstr "Especificar o ID do gerenciador de sessões"
 
-#: ../src/core/main.c:189
+#: ../src/core/main.c:193
 msgid "X Display to use"
 msgstr "Exibição do X a ser utilizada"
 
-#: ../src/core/main.c:195
+#: ../src/core/main.c:199
 msgid "Initialize session from savefile"
 msgstr "Inicializar a sessão a partir do arquivo salvo"
 
-#: ../src/core/main.c:201
+#: ../src/core/main.c:205
 msgid "Make X calls synchronous"
 msgstr "Fazer X chamadas síncronas"
 
-#: ../src/core/main.c:207
+#: ../src/core/main.c:212
 msgid "Run as a wayland compositor"
 msgstr "Executar como um compositor wayland"
 
-#: ../src/core/main.c:214
+#: ../src/core/main.c:220
 msgid "Run as a full display server, rather than nested"
 msgstr "Executar como um servidor de tela cheia, ao invés de aninhado"
 
-#: ../src/core/main.c:450
+#: ../src/core/main.c:459
 #, c-format
 msgid "Failed to scan themes directory: %s\n"
 msgstr "Falha ao varrer a pasta de temas: %s\n"
 
-#: ../src/core/main.c:466
+#: ../src/core/main.c:475
 #, c-format
 msgid ""
 "Could not find a theme! Be sure %s exists and contains the usual themes.\n"
@@ -570,17 +595,17 @@ msgstr "Versão impressa"
 msgid "Mutter plugin to use"
 msgstr "Plug-in do Mutter para usar"
 
-#: ../src/core/prefs.c:2086
+#: ../src/core/prefs.c:2101
 #, c-format
 msgid "Workspace %d"
 msgstr "Espaço de trabalho %d"
 
-#: ../src/core/screen.c:553
+#: ../src/core/screen.c:548
 #, c-format
 msgid "Screen %d on display '%s' is invalid\n"
 msgstr "A tela %d na exibição \"%s\" é inválida\n"
 
-#: ../src/core/screen.c:569
+#: ../src/core/screen.c:564
 #, c-format
 msgid ""
 "Screen %d on display \"%s\" already has a window manager; try using the --"
@@ -589,7 +614,7 @@ msgstr ""
 "A tela %d na exibição \"%s\" já possui um gerenciador de janelas; tente usar "
 "a opção --replace para substituir o gerenciador de janelas atual.\n"
 
-#: ../src/core/screen.c:662
+#: ../src/core/screen.c:657
 #, c-format
 msgid "Screen %d on display \"%s\" already has a window manager\n"
 msgstr "A tela %d na exibição \"%s\" já possui um gerenciador de janelas\n"
@@ -1304,7 +1329,7 @@ msgstr ""
 "atual&quot; e precisarão ser reiniciadas manualmente quando você reiniciar a "
 "sessão."
 
-#: ../src/x11/window-props.c:513
+#: ../src/x11/window-props.c:515
 #, c-format
 msgid "%s (on %s)"
 msgstr "%s (em %s)"

src/Makefile.am

@@ -36,11 +36,15 @@ mutter_built_sources = \
 	$(dbus_display_config_built_sources)	\
 	$(dbus_login1_built_sources)		\
 	mutter-enum-types.h 			\
-	mutter-enum-types.c			\
+	mutter-enum-types.c
+
+if HAVE_WAYLAND
+mutter_built_sources += \
 	gtk-shell-protocol.c			\
 	gtk-shell-server-protocol.h		\
 	xdg-shell-protocol.c			\
 	xdg-shell-server-protocol.h
+endif
 
 wayland_protocols = \
 	wayland/protocol/gtk-shell.xml		\
@@ -96,8 +100,10 @@ libmutter_la_SOURCES =				\
 	compositor/compositor.c			\
 	compositor/compositor-private.h		\
 	compositor/meta-background.c		\
+	compositor/meta-background-private.h	\
 	compositor/meta-background-actor.c	\
 	compositor/meta-background-actor-private.h	\
+	compositor/meta-background-image.c	\
 	compositor/meta-background-group.c	\
 	compositor/meta-cullable.c		\
 	compositor/meta-cullable.h		\
@@ -129,6 +135,7 @@ libmutter_la_SOURCES =				\
 	meta/compositor.h			\
 	meta/meta-background.h			\
 	meta/meta-background-actor.h		\
+	meta/meta-background-image.h		\
 	meta/meta-background-group.h		\
 	meta/meta-plugin.h			\
 	meta/meta-shadow-factory.h		\
@@ -278,9 +285,10 @@ libmutterinclude_headers =			\
 	meta/keybindings.h			\
 	meta/main.h				\
 	meta/meta-backend.h			\
-	meta/meta-background-actor.h		\
-	meta/meta-background-group.h		\
 	meta/meta-background.h			\
+	meta/meta-background-actor.h		\
+	meta/meta-background-image.h		\
+	meta/meta-background-group.h		\
 	meta/meta-cursor-tracker.h		\
 	meta/meta-idle-monitor.h		\
 	meta/meta-plugin.h			\

src/backends/meta-cursor-renderer.c

@@ -53,15 +53,18 @@ queue_redraw (MetaCursorRenderer *renderer)
   MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
   MetaBackend *backend = meta_get_backend ();
   ClutterActor *stage = meta_backend_get_stage (backend);
+  CoglTexture *texture;
 
   /* During early initialization, we can have no stage */
   if (!stage)
     return;
 
-  if (priv->handled_by_backend)
-    meta_stage_set_cursor (META_STAGE (stage), NULL, &priv->current_rect);
+  if (priv->displayed_cursor && !priv->handled_by_backend)
+    texture = meta_cursor_reference_get_cogl_texture (priv->displayed_cursor, NULL, NULL);
   else
-    meta_stage_set_cursor (META_STAGE (stage), priv->displayed_cursor, &priv->current_rect);
+    texture = NULL;
+
+  meta_stage_set_cursor (META_STAGE (stage), texture, &priv->current_rect);
 }
 
 static gboolean

src/backends/meta-stage.c

@@ -28,31 +28,82 @@
 #include <meta/meta-backend.h>
 #include <meta/util.h>
 
-struct _MetaStagePrivate {
-  CoglPipeline *pipeline;
+typedef struct {
+  gboolean enabled;
 
-  MetaCursorReference *cursor;
+  CoglPipeline *pipeline;
+  CoglTexture *texture;
 
   MetaRectangle current_rect;
   MetaRectangle previous_rect;
   gboolean previous_is_valid;
+} MetaOverlay;
+
+struct _MetaStagePrivate {
+  MetaOverlay cursor_overlay;
 };
 typedef struct _MetaStagePrivate MetaStagePrivate;
 
 G_DEFINE_TYPE_WITH_PRIVATE (MetaStage, meta_stage, CLUTTER_TYPE_STAGE);
 
 static void
-update_pipeline (MetaStage *stage)
+meta_overlay_init (MetaOverlay *overlay)
 {
-  MetaStagePrivate *priv = meta_stage_get_instance_private (stage);
+  CoglContext *ctx = clutter_backend_get_cogl_context (clutter_get_default_backend ());
 
-  if (priv->cursor)
+  overlay->pipeline = cogl_pipeline_new (ctx);
+}
+
+static void
+meta_overlay_free (MetaOverlay *overlay)
+{
+  if (overlay->pipeline)
+    cogl_object_unref (overlay->pipeline);
+}
+
+static void
+meta_overlay_set (MetaOverlay   *overlay,
+                  CoglTexture   *texture,
+                  MetaRectangle *rect)
+{
+  if (overlay->texture != texture)
     {
-      CoglTexture *texture = meta_cursor_reference_get_cogl_texture (priv->cursor, NULL, NULL);
-      cogl_pipeline_set_layer_texture (priv->pipeline, 0, texture);
+      overlay->texture = texture;
+
+      if (texture)
+        {
+          cogl_pipeline_set_layer_texture (overlay->pipeline, 0, texture);
+          overlay->enabled = TRUE;
+        }
+      else
+        {
+          cogl_pipeline_set_layer_texture (overlay->pipeline, 0, NULL);
+          overlay->enabled = FALSE;
+        }
     }
-  else
-    cogl_pipeline_set_layer_texture (priv->pipeline, 0, NULL);
+
+  overlay->current_rect = *rect;
+}
+
+static void
+meta_overlay_paint (MetaOverlay *overlay)
+{
+  if (!overlay->enabled)
+    return;
+
+  g_assert (meta_is_wayland_compositor ());
+
+  cogl_framebuffer_draw_rectangle (cogl_get_draw_framebuffer (),
+                                   overlay->pipeline,
+                                   overlay->current_rect.x,
+                                   overlay->current_rect.y,
+                                   overlay->current_rect.x +
+                                   overlay->current_rect.width,
+                                   overlay->current_rect.y +
+                                   overlay->current_rect.height);
+
+  overlay->previous_rect = overlay->current_rect;
+  overlay->previous_is_valid = TRUE;
 }
 
 static void
@@ -61,42 +112,18 @@ meta_stage_finalize (GObject *object)
   MetaStage *stage = META_STAGE (object);
   MetaStagePrivate *priv = meta_stage_get_instance_private (stage);
 
-  if (priv->pipeline)
-    cogl_object_unref (priv->pipeline);
-}
-
-static void
-paint_cursor (MetaStage *stage)
-{
-  MetaStagePrivate *priv = meta_stage_get_instance_private (stage);
-
-  g_assert (meta_is_wayland_compositor ());
-
-  if (!priv->cursor)
-    return;
-
-  cogl_framebuffer_draw_rectangle (cogl_get_draw_framebuffer (),
-                                   priv->pipeline,
-                                   priv->current_rect.x,
-                                   priv->current_rect.y,
-                                   priv->current_rect.x +
-                                   priv->current_rect.width,
-                                   priv->current_rect.y +
-                                   priv->current_rect.height);
-
-  priv->previous_rect = priv->current_rect;
-  priv->previous_is_valid = TRUE;
+  meta_overlay_free (&priv->cursor_overlay);
 }
 
 static void
 meta_stage_paint (ClutterActor *actor)
 {
   MetaStage *stage = META_STAGE (actor);
+  MetaStagePrivate *priv = meta_stage_get_instance_private (stage);
 
   CLUTTER_ACTOR_CLASS (meta_stage_parent_class)->paint (actor);
 
-  if (meta_is_wayland_compositor ())
-    paint_cursor (stage);
+  meta_overlay_paint (&priv->cursor_overlay);
 }
 
 static void
@@ -113,10 +140,9 @@ meta_stage_class_init (MetaStageClass *klass)
 static void
 meta_stage_init (MetaStage *stage)
 {
-  CoglContext *ctx = clutter_backend_get_cogl_context (clutter_get_default_backend ());
   MetaStagePrivate *priv = meta_stage_get_instance_private (stage);
 
-  priv->pipeline = cogl_pipeline_new (ctx);
+  meta_overlay_init (&priv->cursor_overlay);
 
   clutter_stage_set_user_resizable (CLUTTER_STAGE (stage), FALSE);
 }
@@ -130,46 +156,42 @@ meta_stage_new (void)
 }
 
 static void
-queue_redraw (MetaStage *stage)
+queue_redraw_for_overlay (MetaStage   *stage,
+                          MetaOverlay *overlay)
 {
-  MetaStagePrivate *priv = meta_stage_get_instance_private (stage);
   cairo_rectangle_int_t clip;
 
-  /* Clear the location the cursor was at before, if we need to. */
-  if (priv->previous_is_valid)
+  /* Clear the location the overlay was at before, if we need to. */
+  if (overlay->previous_is_valid)
     {
-      clip.x = priv->previous_rect.x;
-      clip.y = priv->previous_rect.y;
-      clip.width = priv->previous_rect.width;
-      clip.height = priv->previous_rect.height;
+      clip.x = overlay->previous_rect.x;
+      clip.y = overlay->previous_rect.y;
+      clip.width = overlay->previous_rect.width;
+      clip.height = overlay->previous_rect.height;
       clutter_actor_queue_redraw_with_clip (CLUTTER_ACTOR (stage), &clip);
-      priv->previous_is_valid = FALSE;
+      overlay->previous_is_valid = FALSE;
     }
 
-  /* And queue a redraw for the current cursor location. */
-  if (priv->cursor)
+  /* Draw the overlay at the new position */
+  if (overlay->enabled)
     {
-      clip.x = priv->current_rect.x;
-      clip.y = priv->current_rect.y;
-      clip.width = priv->current_rect.width;
-      clip.height = priv->current_rect.height;
+      clip.x = overlay->current_rect.x;
+      clip.y = overlay->current_rect.y;
+      clip.width = overlay->current_rect.width;
+      clip.height = overlay->current_rect.height;
       clutter_actor_queue_redraw_with_clip (CLUTTER_ACTOR (stage), &clip);
     }
 }
 
 void
-meta_stage_set_cursor (MetaStage           *stage,
-                       MetaCursorReference *cursor,
-                       MetaRectangle       *rect)
+meta_stage_set_cursor (MetaStage     *stage,
+                       CoglTexture   *texture,
+                       MetaRectangle *rect)
 {
   MetaStagePrivate *priv = meta_stage_get_instance_private (stage);
 
-  if (priv->cursor != cursor)
-    {
-      priv->cursor = cursor;
-      update_pipeline (stage);
-    }
+  g_assert (meta_is_wayland_compositor () || texture == NULL);
 
-  priv->current_rect = *rect;
-  queue_redraw (stage);
+  meta_overlay_set (&priv->cursor_overlay, texture, rect);
+  queue_redraw_for_overlay (stage, &priv->cursor_overlay);
 }

src/backends/meta-stage.h

@@ -51,9 +51,9 @@ GType             meta_stage_get_type                (void) G_GNUC_CONST;
 
 ClutterActor     *meta_stage_new                     (void);
 
-void meta_stage_set_cursor (MetaStage           *stage,
-                            MetaCursorReference *cursor,
-                            MetaRectangle       *rect);
+void meta_stage_set_cursor (MetaStage     *stage,
+                            CoglTexture   *texture,
+                            MetaRectangle *rect);
 G_END_DECLS
 
 #endif /* META_STAGE_H */

src/backends/x11/meta-monitor-manager-xrandr.c

@@ -330,6 +330,21 @@ output_get_hotplug_mode_update (MetaMonitorManagerXrandr *manager_xrandr,
   return output_get_boolean_property (manager_xrandr, output, "hotplug_mode_update");
 }
 
+static char *
+get_xmode_name (XRRModeInfo *xmode)
+{
+  int width = xmode->width;
+  int height = xmode->height;
+
+  if (xmode->hSkew != 0)
+    {
+      width += 2 * (xmode->hSkew >> 8);
+      height += 2 * (xmode->hSkew & 0xff);
+    }
+
+  return g_strdup_printf ("%dx%d", width, height);
+}
+
 static void
 meta_monitor_manager_xrandr_read_current (MetaMonitorManager *manager)
 {
@@ -415,6 +430,7 @@ meta_monitor_manager_xrandr_read_current (MetaMonitorManager *manager)
       mode->height = xmode->height;
       mode->refresh_rate = (xmode->dotClock /
 			    ((float)xmode->hTotal * xmode->vTotal));
+      mode->name = get_xmode_name (xmode);
     }
 
   for (i = 0; i < (unsigned)resources->ncrtc; i++)

src/compositor/clutter-utils.c

@@ -51,6 +51,12 @@ round_to_fixed (float x)
   return roundf (x * 256);
 }
 
+/* Help macros to scale from OpenGL <-1,1> coordinates system to
+ * window coordinates ranging [0,window-size]. Borrowed from clutter-utils.c
+ */
+#define MTX_GL_SCALE_X(x,w,v1,v2) ((((((x) / (w)) + 1.0f) / 2.0f) * (v1)) + (v2))
+#define MTX_GL_SCALE_Y(y,w,v1,v2) ((v1) - (((((y) / (w)) + 1.0f) / 2.0f) * (v1)) + (v2))
+
 /* This helper function checks if (according to our fixed point precision)
  * the vertices @verts form a box of width @widthf and height @heightf
  * located at integral coordinates. These coordinates are returned
@@ -118,3 +124,67 @@ meta_actor_is_untransformed (ClutterActor *actor,
   return meta_actor_vertices_are_untransformed (verts, widthf, heightf, x_origin, y_origin);
 }
 
+/**
+ * meta_actor_painting_untransformed:
+ * @paint_width: the width of the painted area
+ * @paint_height: the height of the painted area
+ * @x_origin: if the transform is only an integer translation
+ *  then the X coordinate of the location of the origin under the transformation
+ *  from drawing space to screen pixel space is returned here.
+ * @y_origin: if the transform is only an integer translation
+ *  then the X coordinate of the location of the origin under the transformation
+ *  from drawing space to screen pixel space is returned here.
+ *
+ * Determines if the current painting transform is an integer translation.
+ * This can differ from the result of meta_actor_is_untransformed() when
+ * painting an actor if we're inside a inside a clone paint. @paint_width
+ * and @paint_height are used to determine the vertices of the rectangle
+ * we check to see if the painted area is "close enough" to the integer
+ * transform.
+ */
+gboolean
+meta_actor_painting_untransformed (int              paint_width,
+                                   int              paint_height,
+                                   int             *x_origin,
+                                   int             *y_origin)
+{
+  CoglMatrix modelview, projection, modelview_projection;
+  ClutterVertex vertices[4];
+  float viewport[4];
+  int i;
+
+  cogl_get_modelview_matrix (&modelview);
+  cogl_get_projection_matrix (&projection);
+
+  cogl_matrix_multiply (&modelview_projection,
+                        &projection,
+                        &modelview);
+
+  vertices[0].x = 0;
+  vertices[0].y = 0;
+  vertices[0].z = 0;
+  vertices[1].x = paint_width;
+  vertices[1].y = 0;
+  vertices[1].z = 0;
+  vertices[2].x = 0;
+  vertices[2].y = paint_height;
+  vertices[2].z = 0;
+  vertices[3].x = paint_width;
+  vertices[3].y = paint_height;
+  vertices[3].z = 0;
+
+  cogl_get_viewport (viewport);
+
+  for (i = 0; i < 4; i++)
+    {
+      float w = 1;
+      cogl_matrix_transform_point (&modelview_projection, &vertices[i].x, &vertices[i].y, &vertices[i].z, &w);
+      vertices[i].x = MTX_GL_SCALE_X (vertices[i].x, w,
+                                      viewport[2], viewport[0]);
+      vertices[i].y = MTX_GL_SCALE_Y (vertices[i].y, w,
+                                      viewport[3], viewport[1]);
+    }
+
+  return meta_actor_vertices_are_untransformed (vertices, paint_width, paint_height, x_origin, y_origin);
+}
+

src/compositor/clutter-utils.h

@@ -31,4 +31,9 @@ gboolean meta_actor_is_untransformed (ClutterActor *actor,
                                       int          *x_origin,
                                       int          *y_origin);
 
+gboolean meta_actor_painting_untransformed (int         paint_width,
+                                            int         paint_height,
+                                            int        *x_origin,
+                                            int        *y_origin);
+
 #endif /* __META_CLUTTER_UTILS_H__ */

src/compositor/cogl-utils.c

@@ -64,3 +64,37 @@ meta_create_texture_pipeline (CoglTexture *src_texture)
 
   return pipeline;
 }
+
+static gboolean is_pot(int x)
+{
+  return x > 0 && (x & (x - 1)) == 0;
+}
+
+CoglTexture *
+meta_create_large_texture (int                   width,
+                           int                   height,
+                           CoglTextureComponents components)
+{
+  ClutterBackend *backend = clutter_get_default_backend ();
+  CoglContext *ctx = clutter_backend_get_cogl_context (backend);
+  CoglTexture *texture;
+
+  gboolean should_use_rectangle = FALSE;
+
+  if (!(is_pot (width) && is_pot (height)) &&
+      !cogl_has_feature (ctx, COGL_FEATURE_ID_TEXTURE_NPOT))
+    {
+      if (cogl_has_feature (ctx, COGL_FEATURE_ID_TEXTURE_RECTANGLE))
+        should_use_rectangle = TRUE;
+    }
+
+  if (should_use_rectangle)
+    texture = COGL_TEXTURE (cogl_texture_rectangle_new_with_size (ctx,
+                                                                  width, height));
+  else
+    texture = COGL_TEXTURE (cogl_texture_2d_new_with_size (ctx,
+                                                           width, height));
+  cogl_texture_set_components (texture, components);
+
+  return texture;
+}

src/compositor/cogl-utils.h

@@ -25,4 +25,8 @@
 
 CoglPipeline * meta_create_texture_pipeline (CoglTexture *texture);
 
+CoglTexture *meta_create_large_texture (int                   width,
+                                        int                   height,
+                                        CoglTextureComponents components);
+
 #endif /* __META_COGL_UTILS_H__ */

src/compositor/compositor.c

@@ -82,7 +82,9 @@
 
 #include "backends/x11/meta-backend-x11.h"
 
+#ifdef HAVE_WAYLAND
 #include "wayland/meta-wayland-private.h"
+#endif
 
 static gboolean
 is_modal (MetaDisplay *display)

src/compositor/meta-background-actor.c

@@ -1,7 +1,7 @@
 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
 /*
  * Copyright 2009 Sander Dijkhuis
- * Copyright 2010 Red Hat, Inc.
+ * Copyright 2014 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
@@ -26,23 +26,119 @@
  *
  */
 
-#include <config.h>
+/*
+ * The overall model drawing model of this widget is that we have one
+ * texture, or two interpolated textures, possibly with alpha or
+ * margins that let the underlying background show through, blended
+ * over a solid color or a gradient. The result of that combination
+ * can then be affected by a "vignette" that darkens the background
+ * away from a central point (or as a no-GLSL fallback, simply darkens
+ * the background) and by overall opacity.
+ *
+ * As of GNOME 3.14, GNOME is only using a fraction of this when the
+ * user sets the background through the control center - what can be
+ * set is:
+ *
+ *  A single image without a border
+ *  An animation of images without a border that blend together,
+ *   with the blend changing every 4-5 minutes
+ *  A solid color with a repeated noise texture blended over it
+ *
+ * This all is pretty easy to do in a fragment shader, except when:
+ *
+ *  A) We don't have GLSL - in this case, the operation of
+ *     interpolating the two textures and blending the result over the
+ *     background can't be expressed with Cogl's fixed-function layer
+ *     combining (which is confined to what GL's texture environment
+ *     combining can do) So we can only handle the above directly if
+ *     there are no margins or alpha.
+ *
+ *  B) The image textures are sliced. Texture size limits on older
+ *     hardware (pre-965 intel hardware, r300, etc.)  is often 2048,
+ *     and it would be common to use a texture larger than this for a
+ *     background and expect it to be scaled down. Cogl can compensate
+ *     for this by breaking the texture up into multiple textures, but
+ *     can't multitexture with sliced textures. So we can only handle
+ *     the above if there's a single texture.
+ *
+ * However, even when we *can* represent everything in a single pass,
+ * it's not necessarily efficient. If we want to draw a 1024x768
+ * background, it's pretty inefficient to bilinearly texture from
+ * two 2560x1440 images and mix that. So the drawing model we take
+ * here is that MetaBackground generates a single texture (which
+ * might be a 1x1 texture for a solid color, or a 1x2 texture for a
+ * gradient, or a repeated texture for wallpaper, or a pre-rendered
+ * texture the size of the screen), and we draw with that, possibly
+ * adding the vignette and opacity.
+ */
 
-#include <cogl/cogl-texture-pixmap-x11.h>
+#include <config.h>
 
 #include <clutter/clutter.h>
 
-#include <X11/Xatom.h>
-
 #include "cogl-utils.h"
-#include "compositor-private.h"
+#include "clutter-utils.h"
 #include <meta/errors.h>
-#include <meta/meta-background.h>
 #include "meta-background-actor-private.h"
+#include "meta-background-private.h"
 #include "meta-cullable.h"
 
+enum
+{
+  PROP_META_SCREEN = 1,
+  PROP_MONITOR,
+  PROP_BACKGROUND,
+};
+
+typedef enum {
+  CHANGED_BACKGROUND = 1 << 0,
+  CHANGED_EFFECTS = 1 << 2,
+  CHANGED_VIGNETTE_PARAMETERS = 1 << 3,
+  CHANGED_ALL = 0xFFFF
+} ChangedFlags;
+
+#define VERTEX_SHADER_DECLARATIONS                                      \
+"uniform vec2 scale;\n"                                                 \
+"uniform vec2 offset;\n"                                                \
+"varying vec2 position;\n"                                              \
+
+#define VERTEX_SHADER_CODE                                              \
+"position = cogl_tex_coord0_in.xy * scale + offset;\n"                  \
+
+#define FRAGMENT_SHADER_DECLARATIONS                                    \
+"uniform float vignette_sharpness;\n"                                   \
+"varying vec2 position;\n"                                              \
+
+#define FRAGMENT_SHADER_CODE                                                   \
+"float t = 2.0 * length(position);\n"                                          \
+"t = min(t, 1.0);\n"                                                           \
+"float pixel_brightness = 1 - t * vignette_sharpness;\n"                       \
+"cogl_color_out.rgb = cogl_color_out.rgb * pixel_brightness;\n"                \
+
+typedef struct _MetaBackgroundLayer MetaBackgroundLayer;
+
+typedef enum {
+  PIPELINE_VIGNETTE = (1 << 0),
+  PIPELINE_BLEND = (1 << 1),
+} PipelineFlags;
+
 struct _MetaBackgroundActorPrivate
 {
+  MetaScreen *screen;
+  int monitor;
+
+  MetaBackground *background;
+
+  gboolean vignette;
+  float brightness;
+  float vignette_sharpness;
+
+  ChangedFlags changed;
+  CoglPipeline *pipeline;
+  PipelineFlags pipeline_flags;
+  cairo_rectangle_int_t texture_area;
+  gboolean force_bilinear;
+
   cairo_region_t *clip_region;
 };
 
@@ -66,27 +162,45 @@ static void
 meta_background_actor_dispose (GObject *object)
 {
   MetaBackgroundActor *self = META_BACKGROUND_ACTOR (object);
+  MetaBackgroundActorPrivate *priv = self->priv;
 
   set_clip_region (self, NULL);
+  meta_background_actor_set_background (self, NULL);
+  if (priv->pipeline)
+    {
+      cogl_object_unref (priv->pipeline);
+      priv->pipeline = NULL;
+    }
 
   G_OBJECT_CLASS (meta_background_actor_parent_class)->dispose (object);
 }
 
+static void
+get_preferred_size (MetaBackgroundActor *self,
+                    gfloat              *width,
+                    gfloat              *height)
+{
+  MetaBackgroundActorPrivate *priv = META_BACKGROUND_ACTOR (self)->priv;
+  MetaRectangle monitor_geometry;
+
+  meta_screen_get_monitor_geometry (priv->screen, priv->monitor, &monitor_geometry);
+
+  if (width != NULL)
+    *width = monitor_geometry.width;
+
+  if (height != NULL)
+    *height = monitor_geometry.height;
+}
+
 static void
 meta_background_actor_get_preferred_width (ClutterActor *actor,
                                            gfloat        for_height,
                                            gfloat       *min_width_p,
                                            gfloat       *natural_width_p)
 {
-  ClutterContent *content;
   gfloat width;
 
-  content = clutter_actor_get_content (actor);
-
-  if (content)
-    clutter_content_get_preferred_size (content, &width, NULL);
-  else
-    width = 0;
+  get_preferred_size (META_BACKGROUND_ACTOR (actor), &width, NULL);
 
   if (min_width_p)
     *min_width_p = width;
@@ -101,15 +215,9 @@ meta_background_actor_get_preferred_height (ClutterActor *actor,
                                             gfloat       *natural_height_p)
 
 {
-  ClutterContent *content;
   gfloat height;
 
-  content = clutter_actor_get_content (actor);
-
-  if (content)
-    clutter_content_get_preferred_size (content, NULL, &height);
-  else
-    height = 0;
+  get_preferred_size (META_BACKGROUND_ACTOR (actor), NULL, &height);
 
   if (min_height_p)
     *min_height_p = height;
@@ -117,18 +225,306 @@ meta_background_actor_get_preferred_height (ClutterActor *actor,
     *natural_height_p = height;
 }
 
+static CoglPipeline *
+make_pipeline (PipelineFlags pipeline_flags)
+{
+  static CoglPipeline *templates[4];
+  CoglPipeline **templatep;
+
+  templatep = &templates[pipeline_flags];
+  if (*templatep == NULL)
+    {
+      /* Cogl automatically caches pipelines with no eviction policy,
+       * so we need to prevent identical pipelines from getting cached
+       * separately, by reusing the same shader snippets.
+       */
+      *templatep = COGL_PIPELINE (meta_create_texture_pipeline (NULL));
+
+      if ((pipeline_flags & PIPELINE_VIGNETTE) != 0)
+        {
+          static CoglSnippet *snippet;
+
+          if (!snippet)
+            snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_VERTEX,
+                                        VERTEX_SHADER_DECLARATIONS, VERTEX_SHADER_CODE);
+
+          cogl_pipeline_add_snippet (*templatep, snippet);
+        }
+
+      if ((pipeline_flags & PIPELINE_VIGNETTE) != 0)
+        {
+          static CoglSnippet *snippet;
+
+          if (!snippet)
+            snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_FRAGMENT,
+                                        FRAGMENT_SHADER_DECLARATIONS, FRAGMENT_SHADER_CODE);
+
+          cogl_pipeline_add_snippet (*templatep, snippet);
+        }
+
+      if ((pipeline_flags & PIPELINE_BLEND) == 0)
+        cogl_pipeline_set_blend (*templatep, "RGBA = ADD (SRC_COLOR, 0)", NULL);
+    }
+
+  return cogl_pipeline_copy (*templatep);
+}
+
+static void
+setup_pipeline (MetaBackgroundActor   *self,
+                cairo_rectangle_int_t *actor_pixel_rect)
+{
+  MetaBackgroundActorPrivate *priv = self->priv;
+  PipelineFlags pipeline_flags = 0;
+  guint8 opacity;
+  float color_component;
+  CoglPipelineFilter filter;
+
+  opacity = clutter_actor_get_paint_opacity (CLUTTER_ACTOR (self));
+  if (opacity < 255)
+    pipeline_flags |= PIPELINE_BLEND;
+  if (priv->vignette && clutter_feature_available (CLUTTER_FEATURE_SHADERS_GLSL))
+    pipeline_flags |= PIPELINE_VIGNETTE;
+
+  if (priv->pipeline &&
+      pipeline_flags != priv->pipeline_flags)
+    {
+      cogl_object_unref (priv->pipeline);
+      priv->pipeline = NULL;
+    }
+
+  if (priv->pipeline == NULL)
+    {
+      priv->pipeline_flags = pipeline_flags;
+      priv->pipeline = make_pipeline (pipeline_flags);
+      priv->changed = CHANGED_ALL;
+    }
+
+  if ((priv->changed & CHANGED_BACKGROUND) != 0)
+    {
+      CoglPipelineWrapMode wrap_mode;
+      CoglTexture *texture = meta_background_get_texture (priv->background,
+                                                          priv->monitor,
+                                                          &priv->texture_area,
+                                                          &wrap_mode);
+      priv->force_bilinear = texture &&
+        (priv->texture_area.width != (int)cogl_texture_get_width (texture) ||
+         priv->texture_area.height != (int)cogl_texture_get_height (texture));
+
+      cogl_pipeline_set_layer_texture (priv->pipeline, 0, texture);
+      cogl_pipeline_set_layer_wrap_mode (priv->pipeline, 0, wrap_mode);
+    }
+
+  if ((priv->changed & CHANGED_VIGNETTE_PARAMETERS) != 0)
+    {
+      cogl_pipeline_set_uniform_1f (priv->pipeline,
+                                    cogl_pipeline_get_uniform_location (priv->pipeline,
+                                                                        "vignette_sharpness"),
+                                    priv->vignette_sharpness);
+    }
+
+  if (priv->vignette)
+    color_component = priv->brightness * opacity / 255.;
+  else
+    color_component = opacity / 255.;
+
+  cogl_pipeline_set_color4f (priv->pipeline,
+                             color_component,
+                             color_component,
+                             color_component,
+                             opacity / 255.);
+
+  if (!priv->force_bilinear &&
+      meta_actor_painting_untransformed (actor_pixel_rect->width, actor_pixel_rect->height, NULL, NULL))
+    filter = COGL_PIPELINE_FILTER_NEAREST;
+  else
+    filter = COGL_PIPELINE_FILTER_LINEAR;
+
+  cogl_pipeline_set_layer_filters (priv->pipeline, 0, filter, filter);
+}
+
+static void
+set_glsl_parameters (MetaBackgroundActor   *self,
+                     cairo_rectangle_int_t *actor_pixel_rect)
+{
+  MetaBackgroundActorPrivate *priv = self->priv;
+  float scale[2];
+  float offset[2];
+
+  /* Compute a scale and offset for transforming texture coordinates to the
+   * coordinate system from [-0.5 to 0.5] across the area of the actor
+   */
+  scale[0] = priv->texture_area.width / (float)actor_pixel_rect->width;
+  scale[1] = priv->texture_area.height / (float)actor_pixel_rect->height;
+  offset[0] = priv->texture_area.x / (float)actor_pixel_rect->width - 0.5;
+  offset[1] = priv->texture_area.y / (float)actor_pixel_rect->height - 0.5;
+
+  cogl_pipeline_set_uniform_float (priv->pipeline,
+                                   cogl_pipeline_get_uniform_location (priv->pipeline,
+                                                                       "scale"),
+                                   2, 1, scale);
+
+  cogl_pipeline_set_uniform_float (priv->pipeline,
+                                   cogl_pipeline_get_uniform_location (priv->pipeline,
+                                                                       "offset"),
+                                   2, 1, offset);
+}
+
+static void
+meta_background_actor_paint (ClutterActor *actor)
+{
+  MetaBackgroundActor *self = META_BACKGROUND_ACTOR (actor);
+  MetaBackgroundActorPrivate *priv = self->priv;
+  ClutterActorBox actor_box;
+  cairo_rectangle_int_t actor_pixel_rect;
+  cairo_region_t *paintable_region = NULL;
+  int n_texture_subareas;
+  int i;
+
+  if ((priv->clip_region && cairo_region_is_empty (priv->clip_region)))
+    return;
+
+  clutter_actor_get_content_box (actor, &actor_box);
+  actor_pixel_rect.x = actor_box.x1;
+  actor_pixel_rect.y = actor_box.y1;
+  actor_pixel_rect.width = actor_box.x2 - actor_box.x1;
+  actor_pixel_rect.height = actor_box.y2 - actor_box.y1;
+
+  /* Now figure out what to actually paint.
+   */
+  paintable_region = cairo_region_create_rectangle (&actor_pixel_rect);
+  if (priv->clip_region != NULL)
+    cairo_region_intersect (paintable_region, priv->clip_region);
+
+  if (cairo_region_is_empty (paintable_region))
+    goto out;
+
+  setup_pipeline (self, &actor_pixel_rect);
+  set_glsl_parameters (self, &actor_pixel_rect);
+
+  /* Finally, split the paintable region up into distinct areas
+   * and paint each area one by one
+   */
+  n_texture_subareas = cairo_region_num_rectangles (paintable_region);
+  for (i = 0; i < n_texture_subareas; i++)
+    {
+      cairo_rectangle_int_t rect;
+      float tx1, tx2, ty1, ty2;
+
+      cairo_region_get_rectangle (paintable_region, i, &rect);
+
+      tx1 = (rect.x - actor_pixel_rect.x - priv->texture_area.x) / (float)priv->texture_area.width;
+      ty1 = (rect.y - actor_pixel_rect.y - priv->texture_area.y) / (float)priv->texture_area.height;
+      tx2 = (rect.x + rect.width - actor_pixel_rect.x - priv->texture_area.x) / (float)priv->texture_area.width;
+      ty2 = (rect.y + rect.height - actor_pixel_rect.y - priv->texture_area.y) / (float)priv->texture_area.height;
+
+      cogl_framebuffer_draw_textured_rectangle (cogl_get_draw_framebuffer (),
+                                                priv->pipeline,
+                                                rect.x, rect.y,
+                                                rect.x + rect.width, rect.y + rect.height,
+                                                tx1, ty1, tx2, ty2);
+    }
+
+ out:
+  cairo_region_destroy (paintable_region);
+}
+
+static void
+meta_background_actor_set_property (GObject      *object,
+                                    guint         prop_id,
+                                    const GValue *value,
+                                    GParamSpec   *pspec)
+{
+  MetaBackgroundActor *self = META_BACKGROUND_ACTOR (object);
+  MetaBackgroundActorPrivate *priv = self->priv;
+
+  switch (prop_id)
+    {
+    case PROP_META_SCREEN:
+      priv->screen = g_value_get_object (value);
+      break;
+    case PROP_MONITOR:
+      priv->monitor = g_value_get_int (value);
+      break;
+    case PROP_BACKGROUND:
+      meta_background_actor_set_background (self, g_value_get_object (value));
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+meta_background_actor_get_property (GObject      *object,
+                                    guint         prop_id,
+                                    GValue       *value,
+                                    GParamSpec   *pspec)
+{
+  MetaBackgroundActorPrivate *priv = META_BACKGROUND_ACTOR (object)->priv;
+
+  switch (prop_id)
+    {
+    case PROP_META_SCREEN:
+      g_value_set_object (value, priv->screen);
+      break;
+    case PROP_MONITOR:
+      g_value_set_int (value, priv->monitor);
+      break;
+    case PROP_BACKGROUND:
+      g_value_set_object (value, priv->background);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+    }
+}
+
 static void
 meta_background_actor_class_init (MetaBackgroundActorClass *klass)
 {
   GObjectClass *object_class = G_OBJECT_CLASS (klass);
   ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
+  GParamSpec *param_spec;
 
   g_type_class_add_private (klass, sizeof (MetaBackgroundActorPrivate));
 
   object_class->dispose = meta_background_actor_dispose;
+  object_class->set_property = meta_background_actor_set_property;
+  object_class->get_property = meta_background_actor_get_property;
 
   actor_class->get_preferred_width = meta_background_actor_get_preferred_width;
   actor_class->get_preferred_height = meta_background_actor_get_preferred_height;
+  actor_class->paint = meta_background_actor_paint;
+
+  param_spec = g_param_spec_object ("meta-screen",
+                                    "MetaScreen",
+                                    "MetaScreen",
+                                    META_TYPE_SCREEN,
+                                    G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
+
+  g_object_class_install_property (object_class,
+                                   PROP_META_SCREEN,
+                                   param_spec);
+
+  param_spec = g_param_spec_int ("monitor",
+                                 "monitor",
+                                 "monitor",
+                                 0, G_MAXINT, 0,
+                                 G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
+
+  g_object_class_install_property (object_class,
+                                   PROP_MONITOR,
+                                   param_spec);
+
+  param_spec = g_param_spec_object ("background",
+                                    "Background",
+                                    "MetaBackground object holding background parameters",
+                                    META_TYPE_BACKGROUND,
+                                    G_PARAM_READWRITE);
+
+  g_object_class_install_property (object_class,
+                                   PROP_BACKGROUND,
+                                   param_spec);
 }
 
 static void
@@ -141,19 +537,22 @@ meta_background_actor_init (MetaBackgroundActor *self)
 
 /**
  * meta_background_actor_new:
+ * @monitor: Index of the monitor for which to draw the background
  *
  * Creates a new actor to draw the background for the given monitor.
- * This actor should be associated with a #MetaBackground using
- * clutter_actor_set_content()
  *
  * Return value: the newly created background actor
  */
 ClutterActor *
-meta_background_actor_new (void)
+meta_background_actor_new (MetaScreen *screen,
+                           int         monitor)
 {
   MetaBackgroundActor *self;
 
-  self = g_object_new (META_TYPE_BACKGROUND_ACTOR, NULL);
+  self = g_object_new (META_TYPE_BACKGROUND_ACTOR,
+                       "meta-screen", screen,
+                       "monitor", monitor,
+                       NULL);
 
   return CLUTTER_ACTOR (self);
 }
@@ -195,3 +594,95 @@ meta_background_actor_get_clip_region (MetaBackgroundActor *self)
   MetaBackgroundActorPrivate *priv = self->priv;
   return priv->clip_region;
 }
+
+static void
+invalidate_pipeline (MetaBackgroundActor *self,
+                     ChangedFlags         changed)
+{
+  MetaBackgroundActorPrivate *priv = self->priv;
+
+  priv->changed |= changed;
+}
+
+static void
+on_background_changed (MetaBackground      *background,
+                       MetaBackgroundActor *self)
+{
+  invalidate_pipeline (self, CHANGED_BACKGROUND);
+}
+
+void
+meta_background_actor_set_background (MetaBackgroundActor *self,
+                                      MetaBackground      *background)
+{
+  MetaBackgroundActorPrivate *priv;
+
+  g_return_if_fail (META_IS_BACKGROUND_ACTOR (self));
+  g_return_if_fail (background == NULL || META_IS_BACKGROUND (background));
+
+  priv = self->priv;
+
+  if (background == priv->background)
+    return;
+
+  if (priv->background)
+    {
+      g_signal_handlers_disconnect_by_func (priv->background,
+                                            (gpointer)on_background_changed,
+                                            self);
+      g_object_unref (priv->background);
+      priv->background = NULL;
+    }
+
+  if (background)
+    {
+      priv->background = g_object_ref (background);
+      g_signal_connect (priv->background, "changed",
+                        G_CALLBACK (on_background_changed), self);
+    }
+
+  invalidate_pipeline (self, CHANGED_BACKGROUND);
+  clutter_actor_queue_redraw (CLUTTER_ACTOR (self));
+}
+
+void
+meta_background_actor_add_vignette (MetaBackgroundActor *self,
+                                    double               brightness,
+                                    double               sharpness)
+{
+  MetaBackgroundActorPrivate *priv;
+
+  g_return_if_fail (META_IS_BACKGROUND_ACTOR (self));
+  g_return_if_fail (brightness >= 0. && brightness <= 1.);
+  g_return_if_fail (sharpness >= 0.);
+
+  priv = self->priv;
+
+  if (!priv->vignette)
+    invalidate_pipeline (self, CHANGED_EFFECTS);
+
+  priv->vignette = TRUE;
+  priv->brightness = brightness;
+  priv->vignette_sharpness = sharpness;
+  invalidate_pipeline (self, CHANGED_VIGNETTE_PARAMETERS);
+
+  clutter_actor_queue_redraw (CLUTTER_ACTOR (self));
+}
+
+void
+meta_background_actor_remove_vignette (MetaBackgroundActor *self)
+{
+  MetaBackgroundActorPrivate *priv;
+  priv = self->priv;
+
+  g_return_if_fail (META_IS_BACKGROUND_ACTOR (self));
+
+  if (!priv->vignette)
+    return;
+
+  priv->vignette = FALSE;
+
+  invalidate_pipeline (self, CHANGED_EFFECTS);
+  clutter_actor_queue_redraw (CLUTTER_ACTOR (self));
+}
+

src/compositor/meta-background-image.c

@@ -0,0 +1,342 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+/*
+ * Copyright 2014 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/>.
+ */
+
+/**
+ * SECTION:meta-background-image
+ * @title: MetaBackgroundImage
+ * @short_description: objects holding images loaded from files, used for backgrounds
+ */
+
+#include <config.h>
+
+#include <gio/gio.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <clutter/clutter.h>
+#include <meta/meta-background-image.h>
+#include "cogl-utils.h"
+
+enum
+{
+  LOADED,
+  LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = { 0 };
+
+struct _MetaBackgroundImageCache
+{
+  GObject parent_instance;
+
+  GHashTable *images;
+};
+
+struct _MetaBackgroundImageCacheClass
+{
+  GObjectClass parent_class;
+};
+
+struct _MetaBackgroundImage
+{
+  GObject parent_instance;
+  char *filename;
+  MetaBackgroundImageCache *cache;
+  gboolean in_cache;
+  gboolean loaded;
+  CoglTexture *texture;
+};
+
+struct _MetaBackgroundImageClass
+{
+  GObjectClass parent_class;
+};
+
+G_DEFINE_TYPE (MetaBackgroundImageCache, meta_background_image_cache, G_TYPE_OBJECT);
+
+static void
+meta_background_image_cache_init (MetaBackgroundImageCache *cache)
+{
+  cache->images = g_hash_table_new (g_str_hash, g_str_equal);
+}
+
+static void
+meta_background_image_cache_finalize (GObject *object)
+{
+  MetaBackgroundImageCache *cache = META_BACKGROUND_IMAGE_CACHE (object);
+  GHashTableIter iter;
+  gpointer key, value;
+
+  g_hash_table_iter_init (&iter, cache->images);
+  while (g_hash_table_iter_next (&iter, &key, &value))
+    {
+      MetaBackgroundImage *image = value;
+      image->in_cache = FALSE;
+    }
+
+  g_hash_table_destroy (cache->images);
+
+  G_OBJECT_CLASS (meta_background_image_cache_parent_class)->finalize (object);
+}
+
+static void
+meta_background_image_cache_class_init (MetaBackgroundImageCacheClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->finalize = meta_background_image_cache_finalize;
+}
+
+/**
+ * meta_background_image_cache_get_default:
+ *
+ * Return value: (transfer none): the global singleton background cache
+ */
+MetaBackgroundImageCache *
+meta_background_image_cache_get_default (void)
+{
+  static MetaBackgroundImageCache *cache;
+
+  if (cache == NULL)
+    cache = g_object_new (META_TYPE_BACKGROUND_IMAGE_CACHE, NULL);
+
+  return cache;
+}
+
+static void
+load_file (GTask               *task,
+           MetaBackgroundImage *image,
+           gpointer             task_data,
+           GCancellable        *cancellable)
+{
+  GError *error = NULL;
+  GdkPixbuf *pixbuf;
+
+  pixbuf = gdk_pixbuf_new_from_file (image->filename,
+                                     &error);
+
+  if (pixbuf == NULL)
+    {
+      g_task_return_error (task, error);
+      return;
+    }
+
+  g_task_return_pointer (task, pixbuf, (GDestroyNotify) g_object_unref);
+}
+
+static void
+file_loaded (GObject      *source_object,
+             GAsyncResult *result,
+             gpointer      user_data)
+{
+  MetaBackgroundImage *image = META_BACKGROUND_IMAGE (source_object);
+  GError *error = NULL;
+  GTask *task;
+  CoglTexture *texture;
+  GdkPixbuf *pixbuf;
+  int width, height, row_stride;
+  guchar *pixels;
+  gboolean has_alpha;
+
+  task = G_TASK (result);
+  pixbuf = g_task_propagate_pointer (task, &error);
+
+  if (pixbuf == NULL)
+    {
+      g_warning ("Failed to load background '%s': %s",
+                 image->filename, error->message);
+      g_clear_error (&error);
+      goto out;
+    }
+
+  width = gdk_pixbuf_get_width (pixbuf);
+  height = gdk_pixbuf_get_height (pixbuf);
+  row_stride = gdk_pixbuf_get_rowstride (pixbuf);
+  pixels = gdk_pixbuf_get_pixels (pixbuf);
+  has_alpha = gdk_pixbuf_get_has_alpha (pixbuf);
+
+  texture = meta_create_large_texture (width, height,
+                                       has_alpha ? COGL_TEXTURE_COMPONENTS_RGBA : COGL_TEXTURE_COMPONENTS_RGB);
+  if (!cogl_texture_set_data (texture,
+                              has_alpha ? COGL_PIXEL_FORMAT_RGBA_8888 : COGL_PIXEL_FORMAT_RGB_888,
+                              row_stride,
+                              pixels, 0,
+                              NULL))
+    {
+      g_warning ("Failed to create texture for background");
+      cogl_object_unref (texture);
+    }
+
+  image->texture = texture;
+
+out:
+  image->loaded = TRUE;
+  g_signal_emit (image, signals[LOADED], 0);
+}
+
+/**
+ * meta_background_image_cache_load:
+ * @cache: a #MetaBackgroundImageCache
+ * @filename: filename to load
+ *
+ * Loads an image to use as a background, or returns a reference to an
+ * image that is already in the process of loading or loaded. In either
+ * case, what is returned is a #MetaBackgroundImage which can be derefenced
+ * to get a #CoglTexture. If meta_background_image_is_loaded() returns %TRUE,
+ * the background is loaded, otherwise the MetaBackgroundImage::loaded
+ * signal will be emitted exactly once. The 'loaded' state means that the
+ * loading process finished, whether it succeeded or failed.
+ *
+ * Return value: (transfer full): a #MetaBackgroundImage to dereference to get the loaded texture
+ */
+MetaBackgroundImage *
+meta_background_image_cache_load (MetaBackgroundImageCache *cache,
+                                  const char               *filename)
+{
+  MetaBackgroundImage *image;
+  GTask *task;
+
+  g_return_val_if_fail (META_IS_BACKGROUND_IMAGE_CACHE (cache), NULL);
+  g_return_val_if_fail (filename != NULL, NULL);
+
+  image = g_hash_table_lookup (cache->images, filename);
+  if (image != NULL)
+    return g_object_ref (image);
+
+  image = g_object_new (META_TYPE_BACKGROUND_IMAGE, NULL);
+  image->cache = cache;
+  image->in_cache = TRUE;
+  image->filename = g_strdup (filename);
+  g_hash_table_insert (cache->images, image->filename, image);
+
+  task = g_task_new (image, NULL, file_loaded, NULL);
+
+  g_task_run_in_thread (task, (GTaskThreadFunc) load_file);
+  g_object_unref (task);
+
+  return image;
+}
+
+/**
+ * meta_background_image_cache_purge:
+ * @cache: a #MetaBackgroundImageCache
+ * @filename: filename to remove from the cache
+ *
+ * Remove an entry from the cache; this would be used if monitoring
+ * showed that the file changed.
+ */
+void
+meta_background_image_cache_purge (MetaBackgroundImageCache *cache,
+                                   const char               *filename)
+{
+  MetaBackgroundImage *image;
+
+  g_return_val_if_fail (META_IS_BACKGROUND_IMAGE_CACHE (cache), NULL);
+  g_return_val_if_fail (filename != NULL, NULL);
+
+  image = g_hash_table_lookup (cache->images, filename);
+  if (image == NULL)
+    return;
+
+  g_hash_table_remove (cache->images, image->filename);
+  image->in_cache = FALSE;
+}
+
+G_DEFINE_TYPE (MetaBackgroundImage, meta_background_image, G_TYPE_OBJECT);
+
+static void
+meta_background_image_init (MetaBackgroundImage *image)
+{
+}
+
+static void
+meta_background_image_finalize (GObject *object)
+{
+  MetaBackgroundImage *image = META_BACKGROUND_IMAGE (object);
+
+  if (image->in_cache)
+    g_hash_table_remove (image->cache->images, image->filename);
+
+  if (image->texture)
+    cogl_object_unref (image->texture);
+  if (image->filename)
+    g_free (image->filename);
+
+  G_OBJECT_CLASS (meta_background_image_parent_class)->finalize (object);
+}
+
+static void
+meta_background_image_class_init (MetaBackgroundImageClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->finalize = meta_background_image_finalize;
+
+  signals[LOADED] =
+    g_signal_new ("loaded",
+                  G_TYPE_FROM_CLASS (object_class),
+                  G_SIGNAL_RUN_LAST,
+                  0,
+                  NULL, NULL, NULL,
+                  G_TYPE_NONE, 0);
+}
+
+/**
+ * meta_background_image_is_loaded:
+ * @image: a #MetaBackgroundImage
+ *
+ * Return value: %TRUE if loading has already completed, %FALSE otherwise
+ */
+gboolean
+meta_background_image_is_loaded (MetaBackgroundImage *image)
+{
+  g_return_val_if_fail (META_IS_BACKGROUND_IMAGE (image), FALSE);
+
+  return image->loaded;
+}
+
+/**
+ * meta_background_image_get_success:
+ * @image: a #MetaBackgroundImage
+ *
+ * This function is a convenience function for checking for success,
+ * without having to call meta_background_image_get_success() and
+ * handle the return of a Cogl type.
+ *
+ * Return value: %TRUE if loading completed successfully, otherwise %FALSE
+ */
+gboolean
+meta_background_image_get_success (MetaBackgroundImage *image)
+{
+  g_return_val_if_fail (META_IS_BACKGROUND_IMAGE (image), FALSE);
+
+  return image->texture != NULL;
+}
+
+/**
+ * meta_background_image_get_texture:
+ * @image: a #MetaBackgroundImage
+ *
+ * Return value: (transfer none): a #CoglTexture if loading succeeded; if
+ *  loading failed or has not yet finished, %NULL.
+ */
+CoglTexture *
+meta_background_image_get_texture (MetaBackgroundImage *image)
+{
+  g_return_val_if_fail (META_IS_BACKGROUND_IMAGE (image), NULL);
+
+  return image->texture;
+}

src/compositor/meta-background-private.h

@@ -0,0 +1,15 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+#ifndef META_BACKGROUND_PRIVATE_H
+#define META_BACKGROUND_PRIVATE_H
+
+#include <config.h>
+
+#include "meta-background-private.h"
+
+CoglTexture *meta_background_get_texture (MetaBackground         *self,
+                                          int                     monitor_index,
+                                          cairo_rectangle_int_t  *texture_area,
+                                          CoglPipelineWrapMode   *wrap_mode);
+
+#endif /* META_BACKGROUND_PRIVATE_H */

src/compositor/meta-shaped-texture.c

@@ -28,16 +28,14 @@
 #include <config.h>
 
 #include <meta/meta-shaped-texture.h>
-#include <meta/util.h>
+#include "meta-shaped-texture-private.h"
+
+#include <cogl/cogl.h>
+#include <gdk/gdk.h> /* for gdk_rectangle_intersect() */
+
 #include "clutter-utils.h"
 #include "meta-texture-tower.h"
 
-#include "meta-shaped-texture-private.h"
-#include "meta-window-actor-private.h"
-
-#include <clutter/clutter.h>
-#include <cogl/cogl.h>
-#include <gdk/gdk.h> /* for gdk_rectangle_intersect() */
 #include "meta-cullable.h"
 
 static void meta_shaped_texture_dispose  (GObject    *object);
@@ -298,10 +296,8 @@ meta_shaped_texture_paint (ClutterActor *actor)
   guchar opacity;
   CoglContext *ctx;
   CoglFramebuffer *fb;
-  CoglPipeline *pipeline = NULL;
   CoglTexture *paint_tex;
   ClutterActorBox alloc;
-  cairo_region_t *blended_region = NULL;
   CoglPipelineFilter filter;
 
   if (priv->clip_region && cairo_region_is_empty (priv->clip_region))
@@ -339,13 +335,15 @@ meta_shaped_texture_paint (ClutterActor *actor)
   if (tex_width == 0 || tex_height == 0) /* no contents yet */
     return;
 
+  cairo_rectangle_int_t tex_rect = { 0, 0, tex_width, tex_height };
+
   /* Use nearest-pixel interpolation if the texture is unscaled. This
    * improves performance, especially with software rendering.
    */
 
   filter = COGL_PIPELINE_FILTER_LINEAR;
 
-  if (!clutter_actor_is_in_clone_paint (actor) && meta_actor_is_untransformed (actor, NULL, NULL))
+  if (meta_actor_painting_untransformed (tex_width, tex_height, NULL, NULL))
     filter = COGL_PIPELINE_FILTER_NEAREST;
 
   ctx = clutter_backend_get_cogl_context (clutter_get_default_backend ());
@@ -354,7 +352,45 @@ meta_shaped_texture_paint (ClutterActor *actor)
   opacity = clutter_actor_get_paint_opacity (actor);
   clutter_actor_get_allocation_box (actor, &alloc);
 
-  if (priv->opaque_region != NULL && opacity == 255)
+  cairo_region_t *blended_region;
+  gboolean use_opaque_region = (priv->opaque_region != NULL && opacity == 255);
+
+  if (use_opaque_region)
+    {
+      if (priv->clip_region != NULL)
+        blended_region = cairo_region_copy (priv->clip_region);
+      else
+        blended_region = cairo_region_create_rectangle (&tex_rect);
+
+      cairo_region_subtract (blended_region, priv->opaque_region);
+    }
+  else
+    {
+      if (priv->clip_region != NULL)
+        blended_region = cairo_region_reference (priv->clip_region);
+      else
+        blended_region = NULL;
+    }
+
+  /* Limit to how many separate rectangles we'll draw; beyond this just
+   * fall back and draw the whole thing */
+#define MAX_RECTS 16
+
+  if (blended_region != NULL)
+    {
+      int n_rects = cairo_region_num_rectangles (blended_region);
+      if (n_rects > MAX_RECTS)
+        {
+          /* Fall back to taking the fully blended path. */
+          use_opaque_region = FALSE;
+
+          cairo_region_destroy (blended_region);
+          blended_region = NULL;
+        }
+    }
+
+  /* First, paint the unblended parts, which are part of the opaque region. */
+  if (use_opaque_region)
     {
       CoglPipeline *opaque_pipeline;
       cairo_region_t *region;
@@ -371,103 +407,87 @@ meta_shaped_texture_paint (ClutterActor *actor)
           region = cairo_region_reference (priv->opaque_region);
         }
 
-      if (cairo_region_is_empty (region))
-        goto paint_blended;
-
-      opaque_pipeline = get_unblended_pipeline (ctx);
-      cogl_pipeline_set_layer_texture (opaque_pipeline, 0, paint_tex);
-      cogl_pipeline_set_layer_filters (opaque_pipeline, 0, filter, filter);
-
-      n_rects = cairo_region_num_rectangles (region);
-      for (i = 0; i < n_rects; i++)
+      if (!cairo_region_is_empty (region))
         {
-          cairo_rectangle_int_t rect;
-          cairo_region_get_rectangle (region, i, &rect);
-          paint_clipped_rectangle (fb, opaque_pipeline, &rect, &alloc);
+          opaque_pipeline = get_unblended_pipeline (ctx);
+          cogl_pipeline_set_layer_texture (opaque_pipeline, 0, paint_tex);
+          cogl_pipeline_set_layer_filters (opaque_pipeline, 0, filter, filter);
+
+          n_rects = cairo_region_num_rectangles (region);
+          for (i = 0; i < n_rects; i++)
+            {
+              cairo_rectangle_int_t rect;
+              cairo_region_get_rectangle (region, i, &rect);
+              paint_clipped_rectangle (fb, opaque_pipeline, &rect, &alloc);
+            }
+
+          cogl_object_unref (opaque_pipeline);
         }
 
-      cogl_object_unref (opaque_pipeline);
-
-      if (priv->clip_region != NULL)
-        {
-          blended_region = cairo_region_copy (priv->clip_region);
-        }
-      else
-        {
-          cairo_rectangle_int_t rect = { 0, 0, tex_width, tex_height };
-          blended_region = cairo_region_create_rectangle (&rect);
-        }
-
-      cairo_region_subtract (blended_region, priv->opaque_region);
-
-    paint_blended:
       cairo_region_destroy (region);
     }
 
-  if (blended_region == NULL && priv->clip_region != NULL)
-    blended_region = cairo_region_reference (priv->clip_region);
+  /* Now, go ahead and paint the blended parts. */
 
-  if (blended_region != NULL && cairo_region_is_empty (blended_region))
-    goto out;
-
-  if (priv->mask_texture == NULL)
+  /* We have three cases:
+   *   1) blended_region has rectangles - paint the rectangles.
+   *   2) blended_region is empty - don't paint anything
+   *   3) blended_region is NULL - paint fully-blended.
+   *
+   *   1) and 3) are the times where we have to paint stuff. This tests
+   *   for 1) and 3).
+   */
+  if (blended_region == NULL || !cairo_region_is_empty (blended_region))
     {
-      pipeline = get_unmasked_pipeline (ctx);
-    }
-  else
-    {
-      pipeline = get_masked_pipeline (ctx);
-      cogl_pipeline_set_layer_texture (pipeline, 1, priv->mask_texture);
-      cogl_pipeline_set_layer_filters (pipeline, 1, filter, filter);
-    }
+      CoglPipeline *blended_pipeline;
 
-  cogl_pipeline_set_layer_texture (pipeline, 0, paint_tex);
-  cogl_pipeline_set_layer_filters (pipeline, 0, filter, filter);
+      if (priv->mask_texture == NULL)
+        {
+          blended_pipeline = get_unmasked_pipeline (ctx);
+        }
+      else
+        {
+          blended_pipeline = get_masked_pipeline (ctx);
+          cogl_pipeline_set_layer_texture (blended_pipeline, 1, priv->mask_texture);
+          cogl_pipeline_set_layer_filters (blended_pipeline, 1, filter, filter);
+        }
 
-  {
-    CoglColor color;
-    cogl_color_init_from_4ub (&color, opacity, opacity, opacity, opacity);
-    cogl_pipeline_set_color (pipeline, &color);
-  }
+      cogl_pipeline_set_layer_texture (blended_pipeline, 0, paint_tex);
+      cogl_pipeline_set_layer_filters (blended_pipeline, 0, filter, filter);
 
-  if (blended_region != NULL)
-    {
-      int n_rects;
+      CoglColor color;
+      cogl_color_init_from_4ub (&color, opacity, opacity, opacity, opacity);
+      cogl_pipeline_set_color (blended_pipeline, &color);
 
-      /* Limit to how many separate rectangles we'll draw; beyond this just
-       * fall back and draw the whole thing */
-#     define MAX_RECTS 16
-
-      n_rects = cairo_region_num_rectangles (blended_region);
-      if (n_rects <= MAX_RECTS)
-	{
+      if (blended_region != NULL)
+        {
+          /* 1) blended_region is not empty. Paint the rectangles. */
           int i;
-          cairo_rectangle_int_t tex_rect = { 0, 0, tex_width, tex_height };
+          int n_rects = cairo_region_num_rectangles (blended_region);
 
-	  for (i = 0; i < n_rects; i++)
-	    {
-	      cairo_rectangle_int_t rect;
+          for (i = 0; i < n_rects; i++)
+            {
+              cairo_rectangle_int_t rect;
+              cairo_region_get_rectangle (blended_region, i, &rect);
 
-	      cairo_region_get_rectangle (blended_region, i, &rect);
+              if (!gdk_rectangle_intersect (&tex_rect, &rect, &rect))
+                continue;
 
-	      if (!gdk_rectangle_intersect (&tex_rect, &rect, &rect))
-		continue;
-
-              paint_clipped_rectangle (fb, pipeline, &rect, &alloc);
+              paint_clipped_rectangle (fb, blended_pipeline, &rect, &alloc);
             }
+        }
+      else
+        {
+          /* 3) blended_region is NULL. Do a full paint. */
+          cogl_framebuffer_draw_rectangle (fb, blended_pipeline,
+                                           0, 0,
+                                           alloc.x2 - alloc.x1,
+                                           alloc.y2 - alloc.y1);
+        }
 
-          goto out;
-	}
+      cogl_object_unref (blended_pipeline);
     }
 
-  cogl_framebuffer_draw_rectangle (fb, pipeline,
-                                   0, 0,
-                                   alloc.x2 - alloc.x1,
-                                   alloc.y2 - alloc.y1);
-
- out:
-  if (pipeline != NULL)
-    cogl_object_unref (pipeline);
   if (blended_region != NULL)
     cairo_region_destroy (blended_region);
 }
@@ -485,7 +505,7 @@ meta_shaped_texture_get_preferred_width (ClutterActor *self,
   priv = META_SHAPED_TEXTURE (self)->priv;
 
   if (min_width_p)
-    *min_width_p = 0;
+    *min_width_p = priv->tex_width;
 
   if (natural_width_p)
     *natural_width_p = priv->tex_width;
@@ -504,7 +524,7 @@ meta_shaped_texture_get_preferred_height (ClutterActor *self,
   priv = META_SHAPED_TEXTURE (self)->priv;
 
   if (min_height_p)
-    *min_height_p = 0;
+    *min_height_p = priv->tex_height;
 
   if (natural_height_p)
     *natural_height_p = priv->tex_height;
@@ -514,16 +534,17 @@ static cairo_region_t *
 effective_unobscured_region (MetaShapedTexture *self)
 {
   MetaShapedTexturePrivate *priv = self->priv;
-  ClutterActor *parent = clutter_actor_get_parent (CLUTTER_ACTOR (self));
+  ClutterActor *actor;
 
-  if (clutter_actor_has_mapped_clones (CLUTTER_ACTOR (self)))
-    return NULL;
-
-  while (parent && !META_IS_WINDOW_ACTOR (parent))
-    parent = clutter_actor_get_parent (parent);
-
-  if (parent && clutter_actor_has_mapped_clones (parent))
-    return NULL;
+  /* Fail if we have any mapped clones. */
+  actor = CLUTTER_ACTOR (self);
+  do
+    {
+      if (clutter_actor_has_mapped_clones (actor))
+        return NULL;
+      actor = clutter_actor_get_parent (actor);
+    }
+  while (actor != NULL);
 
   return priv->unobscured_region;
 }

src/compositor/meta-surface-actor-wayland.c

@@ -34,45 +34,15 @@
 struct _MetaSurfaceActorWaylandPrivate
 {
   MetaWaylandSurface *surface;
-  MetaWaylandBuffer *buffer;
-  struct wl_listener buffer_destroy_listener;
 };
 typedef struct _MetaSurfaceActorWaylandPrivate MetaSurfaceActorWaylandPrivate;
 
 G_DEFINE_TYPE_WITH_PRIVATE (MetaSurfaceActorWayland, meta_surface_actor_wayland, META_TYPE_SURFACE_ACTOR)
 
-static void
-meta_surface_actor_handle_buffer_destroy (struct wl_listener *listener, void *data)
-{
-  MetaSurfaceActorWaylandPrivate *priv = wl_container_of (listener, priv, buffer_destroy_listener);
-
-  /* If the buffer is destroyed while we're attached to it,
-   * we want to unset priv->buffer so we don't access freed
-   * memory. Keep the texture set however so the user doesn't
-   * see the window disappear. */
-  priv->buffer = NULL;
-}
-
 static void
 meta_surface_actor_wayland_process_damage (MetaSurfaceActor *actor,
                                            int x, int y, int width, int height)
 {
-  MetaSurfaceActorWayland *self = META_SURFACE_ACTOR_WAYLAND (actor);
-  MetaSurfaceActorWaylandPrivate *priv = meta_surface_actor_wayland_get_instance_private (self);
-
-  if (priv->buffer)
-    {
-      struct wl_resource *resource = priv->buffer->resource;
-      struct wl_shm_buffer *shm_buffer = wl_shm_buffer_get (resource);
-
-      if (shm_buffer)
-        {
-          CoglTexture2D *texture = COGL_TEXTURE_2D (priv->buffer->texture);
-          cogl_wayland_texture_set_region_from_shm_buffer (texture, x, y, width, height, shm_buffer, x, y, 0, NULL);
-        }
-
-      meta_surface_actor_update_area (META_SURFACE_ACTOR (self), x, y, width, height);
-    }
 }
 
 static void
@@ -213,7 +183,7 @@ meta_surface_actor_wayland_dispose (GObject *object)
 {
   MetaSurfaceActorWayland *self = META_SURFACE_ACTOR_WAYLAND (object);
 
-  meta_surface_actor_wayland_set_buffer (self, NULL);
+  meta_surface_actor_wayland_set_texture (self, NULL);
 
   G_OBJECT_CLASS (meta_surface_actor_wayland_parent_class)->dispose (object);
 }
@@ -244,9 +214,6 @@ meta_surface_actor_wayland_class_init (MetaSurfaceActorWaylandClass *klass)
 static void
 meta_surface_actor_wayland_init (MetaSurfaceActorWayland *self)
 {
-  MetaSurfaceActorWaylandPrivate *priv = meta_surface_actor_wayland_get_instance_private (self);
-
-  priv->buffer_destroy_listener.notify = meta_surface_actor_handle_buffer_destroy;
 }
 
 MetaSurfaceActor *
@@ -263,24 +230,11 @@ meta_surface_actor_wayland_new (MetaWaylandSurface *surface)
 }
 
 void
-meta_surface_actor_wayland_set_buffer (MetaSurfaceActorWayland *self,
-                                       MetaWaylandBuffer       *buffer)
+meta_surface_actor_wayland_set_texture (MetaSurfaceActorWayland *self,
+                                        CoglTexture *texture)
 {
-  MetaSurfaceActorWaylandPrivate *priv = meta_surface_actor_wayland_get_instance_private (self);
   MetaShapedTexture *stex = meta_surface_actor_get_texture (META_SURFACE_ACTOR (self));
-
-  if (priv->buffer)
-    wl_list_remove (&priv->buffer_destroy_listener.link);
-
-  priv->buffer = buffer;
-
-  if (priv->buffer)
-    {
-      wl_signal_add (&priv->buffer->destroy_signal, &priv->buffer_destroy_listener);
-      meta_shaped_texture_set_texture (stex, priv->buffer->texture);
-    }
-  else
-    meta_shaped_texture_set_texture (stex, NULL);
+  meta_shaped_texture_set_texture (stex, texture);
 }
 
 MetaWaylandSurface *

src/compositor/meta-surface-actor-wayland.h

@@ -58,8 +58,8 @@ GType meta_surface_actor_wayland_get_type (void);
 MetaSurfaceActor * meta_surface_actor_wayland_new (MetaWaylandSurface *surface);
 MetaWaylandSurface * meta_surface_actor_wayland_get_surface (MetaSurfaceActorWayland *self);
 
-void meta_surface_actor_wayland_set_buffer (MetaSurfaceActorWayland *self,
-                                            MetaWaylandBuffer         *buffer);
+void meta_surface_actor_wayland_set_texture (MetaSurfaceActorWayland *self,
+                                             CoglTexture *texture);
 
 double meta_surface_actor_wayland_get_scale (MetaSurfaceActorWayland *actor);
 

src/compositor/meta-surface-actor-x11.c

@@ -179,19 +179,6 @@ is_visible (MetaSurfaceActorX11 *self)
   return (priv->pixmap != None) && !priv->unredirected;
 }
 
-static void
-damage_area (MetaSurfaceActorX11 *self,
-             int x, int y, int width, int height)
-{
-  MetaSurfaceActorX11Private *priv = meta_surface_actor_x11_get_instance_private (self);
-
-  if (!is_visible (self))
-    return;
-
-  cogl_texture_pixmap_x11_update_area (priv->texture, x, y, width, height);
-  meta_surface_actor_update_area (META_SURFACE_ACTOR (self), x, y, width, height);
-}
-
 static void
 meta_surface_actor_x11_process_damage (MetaSurfaceActor *actor,
                                        int x, int y, int width, int height)
@@ -218,11 +205,10 @@ meta_surface_actor_x11_process_damage (MetaSurfaceActor *actor,
         priv->does_full_damage = TRUE;
     }
 
-  /* Drop damage event for unredirected windows */
-  if (priv->unredirected)
+  if (!is_visible (self))
     return;
 
-  damage_area (self, x, y, width, height);
+  cogl_texture_pixmap_x11_update_area (priv->texture, x, y, width, height);
 }
 
 static void

src/compositor/meta-surface-actor.c

@@ -188,7 +188,7 @@ meta_surface_actor_get_texture (MetaSurfaceActor *self)
   return self->priv->texture;
 }
 
-void
+static void
 meta_surface_actor_update_area (MetaSurfaceActor *self,
                                 int x, int y, int width, int height)
 {
@@ -262,6 +262,9 @@ meta_surface_actor_process_damage (MetaSurfaceActor *self,
     }
 
   META_SURFACE_ACTOR_GET_CLASS (self)->process_damage (self, x, y, width, height);
+
+  if (meta_surface_actor_is_visible (self))
+    meta_surface_actor_update_area (self, x, y, width, height);
 }
 
 void
@@ -277,9 +280,15 @@ meta_surface_actor_is_argb32 (MetaSurfaceActor *self)
   CoglTexture *texture = meta_shaped_texture_get_texture (stex);
 
   /* If we don't have a texture, like during initialization, assume
-   * that we're ARGB32. */
+   * that we're ARGB32.
+   *
+   * If we are unredirected and we have no texture assume that we are
+   * not ARGB32 otherwise we wouldn't be unredirected in the first
+   * place. This prevents us from continually redirecting and
+   * unredirecting on every paint.
+   */
   if (!texture)
-    return TRUE;
+    return !meta_surface_actor_is_unredirected (self);
 
   switch (cogl_texture_get_components (texture))
     {

src/compositor/meta-surface-actor.h

@@ -61,9 +61,6 @@ void meta_surface_actor_set_input_region (MetaSurfaceActor *self,
 void meta_surface_actor_set_opaque_region (MetaSurfaceActor *self,
                                            cairo_region_t   *region);
 
-void meta_surface_actor_update_area (MetaSurfaceActor *actor,
-                                     int x, int y, int width, int height);
-
 void meta_surface_actor_process_damage (MetaSurfaceActor *actor,
                                         int x, int y, int width, int height);
 void meta_surface_actor_pre_paint (MetaSurfaceActor *actor);

src/compositor/meta-window-actor.c

@@ -35,9 +35,8 @@
 
 #ifdef HAVE_WAYLAND
 #include "meta-surface-actor-wayland.h"
-#endif
-
 #include "wayland/meta-wayland-surface.h"
+#endif
 
 typedef enum {
   INITIALLY_FROZEN,

src/compositor/meta-window-group.c

@@ -31,64 +31,6 @@ static void cullable_iface_init (MetaCullableInterface *iface);
 G_DEFINE_TYPE_WITH_CODE (MetaWindowGroup, meta_window_group, CLUTTER_TYPE_ACTOR,
                          G_IMPLEMENT_INTERFACE (META_TYPE_CULLABLE, cullable_iface_init));
 
-/* Help macros to scale from OpenGL <-1,1> coordinates system to
- * window coordinates ranging [0,window-size]. Borrowed from clutter-utils.c
- */
-#define MTX_GL_SCALE_X(x,w,v1,v2) ((((((x) / (w)) + 1.0f) / 2.0f) * (v1)) + (v2))
-#define MTX_GL_SCALE_Y(y,w,v1,v2) ((v1) - (((((y) / (w)) + 1.0f) / 2.0f) * (v1)) + (v2))
-
-/* Check if we're painting the MetaWindowGroup "untransformed". This can
- * differ from the result of actor_is_untransformed(window_group) if we're
- * inside a clone paint. The integer translation, if any, is returned.
- */
-static gboolean
-painting_untransformed (MetaWindowGroup *window_group,
-                        int             *x_origin,
-                        int             *y_origin)
-{
-  CoglMatrix modelview, projection, modelview_projection;
-  ClutterVertex vertices[4];
-  int width, height;
-  float viewport[4];
-  int i;
-
-  cogl_get_modelview_matrix (&modelview);
-  cogl_get_projection_matrix (&projection);
-
-  cogl_matrix_multiply (&modelview_projection,
-                        &projection,
-                        &modelview);
-
-  meta_screen_get_size (window_group->screen, &width, &height);
-
-  vertices[0].x = 0;
-  vertices[0].y = 0;
-  vertices[0].z = 0;
-  vertices[1].x = width;
-  vertices[1].y = 0;
-  vertices[1].z = 0;
-  vertices[2].x = 0;
-  vertices[2].y = height;
-  vertices[2].z = 0;
-  vertices[3].x = width;
-  vertices[3].y = height;
-  vertices[3].z = 0;
-
-  cogl_get_viewport (viewport);
-
-  for (i = 0; i < 4; i++)
-    {
-      float w = 1;
-      cogl_matrix_transform_point (&modelview_projection, &vertices[i].x, &vertices[i].y, &vertices[i].z, &w);
-      vertices[i].x = MTX_GL_SCALE_X (vertices[i].x, w,
-                                      viewport[2], viewport[0]);
-      vertices[i].y = MTX_GL_SCALE_Y (vertices[i].y, w,
-                                      viewport[3], viewport[1]);
-    }
-
-  return meta_actor_vertices_are_untransformed (vertices, width, height, x_origin, y_origin);
-}
-
 static void
 meta_window_group_cull_out (MetaCullable   *cullable,
                             cairo_region_t *unobscured_region,
@@ -119,10 +61,13 @@ meta_window_group_paint (ClutterActor *actor)
   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);
   ClutterActor *stage = clutter_actor_get_stage (actor);
 
+  meta_screen_get_size (window_group->screen, &screen_width, &screen_height);
+
   /* Normally we expect an actor to be drawn at it's position on the screen.
    * However, if we're inside the paint of a ClutterClone, that won't be the
    * case and we need to compensate. We look at the position of the window
@@ -136,7 +81,7 @@ meta_window_group_paint (ClutterActor *actor)
    * painting currently, and never worry about how actors are positioned
    * on the stage.
    */
-  if (!painting_untransformed (window_group, &paint_x_origin, &paint_y_origin) ||
+  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))
     {
       CLUTTER_ACTOR_CLASS (meta_window_group_parent_class)->paint (actor);

src/compositor/plugins/default.c

@@ -303,15 +303,16 @@ on_monitors_changed (MetaScreen *screen,
   for (i = 0; i < n; i++)
     {
       MetaRectangle rect;
-      ClutterActor *background;
+      ClutterActor *background_actor;
+      MetaBackground *background;
       ClutterColor color;
 
       meta_screen_get_monitor_geometry (screen, i, &rect);
 
-      background = meta_background_actor_new ();
+      background_actor = meta_background_actor_new (screen, i);
 
-      clutter_actor_set_position (background, rect.x, rect.y);
-      clutter_actor_set_size (background, rect.width, rect.height);
+      clutter_actor_set_position (background_actor, rect.x, rect.y);
+      clutter_actor_set_size (background_actor, rect.width, rect.height);
 
       /* Don't use rand() here, mesa calls srand() internally when
          parsing the driconf XML, but it's nice if the colors are
@@ -322,9 +323,13 @@ on_monitors_changed (MetaScreen *screen,
                           g_rand_int_range (rand, 0, 255),
                           g_rand_int_range (rand, 0, 255),
                           255);
-      clutter_actor_set_background_color (background, &color);
 
-      clutter_actor_add_child (self->priv->background_group, background);
+      background = meta_background_new (screen);
+      meta_background_set_color (background, &color);
+      meta_background_actor_set_background (META_BACKGROUND_ACTOR (background_actor), background);
+      g_object_unref (background);
+
+      clutter_actor_add_child (self->priv->background_group, background_actor);
     }
 
   g_rand_free (rand);

src/core/events.c

@@ -35,6 +35,7 @@
 #endif
 
 #ifdef HAVE_WAYLAND
+#include "backends/meta-cursor-tracker-private.h"
 #include "wayland/meta-wayland-private.h"
 #endif
 #include "meta-surface-actor.h"
@@ -187,6 +188,14 @@ meta_display_handle_event (MetaDisplay        *display,
     }
 #endif
 
+#ifdef HAVE_WAYLAND
+  if (meta_is_wayland_compositor () && event->type == CLUTTER_MOTION)
+    {
+      MetaCursorTracker *tracker = meta_cursor_tracker_get_for_screen (NULL);
+      meta_cursor_tracker_update_position (tracker, event->motion.x, event->motion.y);
+    }
+#endif
+
   handle_idletime_for_event (event);
 
   window = get_window_for_event (display, event);

src/core/workspace.c

@@ -241,6 +241,19 @@ workspace_free_builtin_struts (MetaWorkspace *workspace)
   workspace->builtin_struts = NULL;
 }
 
+/* Ensure that the workspace is empty by making sure that
+ * all of our windows are on-all-workspaces. */
+static void
+assert_workspace_empty (MetaWorkspace *workspace)
+{
+  GList *l;
+  for (l = workspace->windows; l != NULL; l = l->next)
+    {
+      MetaWindow *window = l->data;
+      g_assert (window->on_all_workspaces);
+    }
+}
+
 void
 meta_workspace_remove (MetaWorkspace *workspace)
 {
@@ -249,7 +262,7 @@ meta_workspace_remove (MetaWorkspace *workspace)
 
   g_return_if_fail (workspace != workspace->screen->active_workspace);
 
-  g_assert (workspace->windows == NULL);
+  assert_workspace_empty (workspace);
 
   screen = workspace->screen;
 
@@ -344,12 +357,14 @@ meta_workspace_relocate_windows (MetaWorkspace *workspace,
   for (l = copy; l != NULL; l = l->next)
     {
       MetaWindow *window = l->data;
-      meta_window_change_workspace (window, new_home);
+
+      if (!window->override_redirect)
+        meta_window_change_workspace (window, new_home);
     }
 
   g_list_free (copy);
 
-  g_assert (workspace->windows == NULL);
+  assert_workspace_empty (workspace);
 }
 
 void

src/meta/meta-background-actor.h

@@ -22,10 +22,8 @@
 #define META_BACKGROUND_ACTOR_H
 
 #include <clutter/clutter.h>
-#include <cogl/cogl.h>
-
-#include <meta/gradient.h>
 #include <meta/screen.h>
+#include <meta/meta-background.h>
 
 #include <gsettings-desktop-schemas/gdesktop-enums.h>
 
@@ -63,6 +61,15 @@ struct _MetaBackgroundActor
 
 GType meta_background_actor_get_type (void);
 
-ClutterActor *meta_background_actor_new (void);
+ClutterActor *meta_background_actor_new    (MetaScreen *screen,
+                                            int         monitor);
+
+void meta_background_actor_set_background  (MetaBackgroundActor *self,
+                                            MetaBackground      *background);
+
+void meta_background_actor_add_vignette    (MetaBackgroundActor *self,
+                                            double               brightness,
+                                            double               sharpness);
+void meta_background_actor_remove_vignette (MetaBackgroundActor *self);
 
 #endif /* META_BACKGROUND_ACTOR_H */

src/meta/meta-background-image.h

@@ -0,0 +1,76 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+/*
+ * MetaBackgroundImageCache:
+ *
+ * Simple cache for background textures loaded from files
+ *
+ * Copyright 2014 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_BACKGROUND_IMAGE_H__
+#define __META_BACKGROUND_IMAGE_H__
+
+#include <glib-object.h>
+#include <cogl/cogl.h>
+
+#define META_TYPE_BACKGROUND_IMAGE            (meta_background_image_get_type ())
+#define META_BACKGROUND_IMAGE(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), META_TYPE_BACKGROUND_IMAGE, MetaBackgroundImage))
+#define META_BACKGROUND_IMAGE_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  META_TYPE_BACKGROUND_IMAGE, MetaBackgroundImageClass))
+#define META_IS_BACKGROUND_IMAGE(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), META_TYPE_BACKGROUND_IMAGE))
+#define META_IS_BACKGROUND_IMAGE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  META_TYPE_BACKGROUND_IMAGE))
+#define META_BACKGROUND_IMAGE_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  META_TYPE_BACKGROUND_IMAGE, MetaBackgroundImageClass))
+
+/**
+ * MetaBackgroundImage:
+ *
+ * #MetaBackgroundImage is an object that represents a loaded or loading background image.
+ */
+typedef struct _MetaBackgroundImage      MetaBackgroundImage;
+typedef struct _MetaBackgroundImageClass MetaBackgroundImageClass;
+
+GType meta_background_image_get_type (void);
+
+gboolean     meta_background_image_is_loaded   (MetaBackgroundImage *image);
+gboolean     meta_background_image_get_success (MetaBackgroundImage *image);
+CoglTexture *meta_background_image_get_texture (MetaBackgroundImage *image);
+
+#define META_TYPE_BACKGROUND_IMAGE_CACHE            (meta_background_image_cache_get_type ())
+#define META_BACKGROUND_IMAGE_CACHE(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), META_TYPE_BACKGROUND_IMAGE_CACHE, MetaBackgroundImageCache))
+#define META_BACKGROUND_IMAGE_CACHE_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  META_TYPE_BACKGROUND_IMAGE_CACHE, MetaBackgroundImageCacheClass))
+#define META_IS_BACKGROUND_IMAGE_CACHE(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), META_TYPE_BACKGROUND_IMAGE_CACHE))
+#define META_IS_BACKGROUND_IMAGE_CACHE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  META_TYPE_BACKGROUND_IMAGE_CACHE))
+#define META_BACKGROUND_IMAGE_CACHE_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  META_TYPE_BACKGROUND_IMAGE_CACHE, MetaBackgroundImageCacheClass))
+
+/**
+ * MetaBackgroundImageCache:
+ *
+ * #MetaBackgroundImageCache caches loading of textures for backgrounds; there's actually
+ * nothing background specific about it, other than it is tuned to work well for
+ * large images as typically are used for backgrounds.
+ */
+typedef struct _MetaBackgroundImageCache      MetaBackgroundImageCache;
+typedef struct _MetaBackgroundImageCacheClass MetaBackgroundImageCacheClass;
+
+MetaBackgroundImageCache *meta_background_image_cache_get_default (void);
+
+GType meta_background_image_cache_get_type (void);
+
+MetaBackgroundImage *meta_background_image_cache_load  (MetaBackgroundImageCache *cache,
+                                                        const char               *filename);
+void                 meta_background_image_cache_purge (MetaBackgroundImageCache *cache,
+                                                        const char               *filename);
+
+#endif /* __META_BACKGROUND_IMAGE_H__ */

src/meta/meta-background.h

@@ -1,8 +1,8 @@
 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
 /*
- * meta-background.h: CoglTexture for paintnig the system background
+ * meta-background-actor.h:  for painting the root window background
  *
- * Copyright 2013 Red Hat, Inc.
+ * Copyright 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
@@ -21,20 +21,16 @@
 #ifndef META_BACKGROUND_H
 #define META_BACKGROUND_H
 
-#include <cogl/cogl.h>
 #include <clutter/clutter.h>
-
-#include <meta/gradient.h>
-#include <meta/screen.h>
-
 #include <gsettings-desktop-schemas/gdesktop-enums.h>
+#include <meta/screen.h>
 
 /**
  * MetaBackground:
  *
- * This class handles loading a background from file, screenshot, or
- * color scheme. The resulting object can be associated with one or
- * more #MetaBackgroundActor objects to handle loading the background.
+ * This class handles tracking and painting the root window background.
+ * By integrating with #MetaWindowGroup we can avoid painting parts of
+ * the background that are obscured by other windows.
  */
 
 #define META_TYPE_BACKGROUND            (meta_background_get_type ())
@@ -48,20 +44,6 @@ typedef struct _MetaBackground        MetaBackground;
 typedef struct _MetaBackgroundClass   MetaBackgroundClass;
 typedef struct _MetaBackgroundPrivate MetaBackgroundPrivate;
 
-/**
- * MetaBackgroundEffects:
- * @META_BACKGROUND_EFFECTS_NONE: No effect
- * @META_BACKGROUND_EFFECTS_VIGNETTE: Vignette
- *
- * Which effects to enable on the background
- */
-
-typedef enum
-{
-  META_BACKGROUND_EFFECTS_NONE       = 0,
-  META_BACKGROUND_EFFECTS_VIGNETTE   = 1 << 1,
-} MetaBackgroundEffects;
-
 struct _MetaBackgroundClass
 {
   /*< private >*/
@@ -70,7 +52,6 @@ struct _MetaBackgroundClass
 
 struct _MetaBackground
 {
-  /*< private >*/
   GObject parent;
 
   MetaBackgroundPrivate *priv;
@@ -78,33 +59,21 @@ struct _MetaBackground
 
 GType meta_background_get_type (void);
 
-MetaBackground *meta_background_new (MetaScreen           *screen,
-                                     int                   monitor,
-				     MetaBackgroundEffects effects);
-MetaBackground *meta_background_copy (MetaBackground        *self,
-                                      int                    monitor,
-				      MetaBackgroundEffects  effects);
+MetaBackground *meta_background_new  (MetaScreen *screen);
 
-void meta_background_load_gradient (MetaBackground            *self,
-                                    GDesktopBackgroundShading  shading_direction,
-                                    ClutterColor              *color,
-                                    ClutterColor              *second_color);
-void meta_background_load_color (MetaBackground *self,
-                                 ClutterColor   *color);
-void meta_background_load_file_async (MetaBackground          *self,
-                                      const char              *filename,
-                                      GDesktopBackgroundStyle  style,
-                                      GCancellable            *cancellable,
-                                      GAsyncReadyCallback      callback,
-                                      gpointer                 user_data);
-gboolean meta_background_load_file_finish (MetaBackground       *self,
-                                           GAsyncResult         *result,
-                                           GError              **error);
-
-const char *meta_background_get_filename (MetaBackground *self);
-GDesktopBackgroundStyle meta_background_get_style (MetaBackground *self);
-GDesktopBackgroundShading meta_background_get_shading (MetaBackground *self);
-const ClutterColor *meta_background_get_color (MetaBackground *self);
-const ClutterColor *meta_background_get_second_color (MetaBackground *self);
+void meta_background_set_color    (MetaBackground            *self,
+                                   ClutterColor              *color);
+void meta_background_set_gradient (MetaBackground            *self,
+                                   GDesktopBackgroundShading  shading_direction,
+                                   ClutterColor              *color,
+                                   ClutterColor              *second_color);
+void meta_background_set_filename (MetaBackground            *self,
+                                   const char                *filename,
+                                   GDesktopBackgroundStyle    style);
+void meta_background_set_blend    (MetaBackground            *self,
+                                   const char                *filename1,
+                                   const char                *filename2,
+                                   double                     blend_factor,
+                                   GDesktopBackgroundStyle    style);
 
 #endif /* META_BACKGROUND_H */

src/wayland/meta-wayland-pointer.c

@@ -315,14 +315,6 @@ meta_wayland_pointer_update (MetaWaylandPointer *pointer,
   repick_for_event (pointer, event);
 
   pointer->button_count = count_buttons (event);
-
-  if (pointer->cursor_tracker)
-    {
-      ClutterPoint pos;
-
-      clutter_input_device_get_coords (pointer->device, NULL, &pos);
-      meta_cursor_tracker_update_position (pointer->cursor_tracker, pos.x, pos.y);
-    }
 }
 
 static void

src/wayland/meta-wayland-surface.c

@@ -109,11 +109,15 @@ surface_process_damage (MetaWaylandSurface *surface,
   int i, n_rectangles;
   cairo_rectangle_int_t buffer_rect;
   int scale = surface->scale;
+  CoglTexture *texture;
+  struct wl_shm_buffer *shm_buffer;
 
   /* Damage without a buffer makes no sense so ignore that, otherwise we would crash */
   if (!surface->buffer)
     return;
 
+  texture = surface->buffer->texture;
+
   buffer_rect.x = 0;
   buffer_rect.y = 0;
   buffer_rect.width = cogl_texture_get_width (surface->buffer->texture);
@@ -125,10 +129,16 @@ surface_process_damage (MetaWaylandSurface *surface,
 
   n_rectangles = cairo_region_num_rectangles (region);
 
+  shm_buffer = wl_shm_buffer_get (surface->buffer->resource);
+
   for (i = 0; i < n_rectangles; i++)
     {
       cairo_rectangle_int_t rect;
       cairo_region_get_rectangle (region, i, &rect);
+
+      if (shm_buffer)
+        cogl_wayland_texture_set_region_from_shm_buffer (texture, rect.x, rect.y, rect.width, rect.height, shm_buffer, rect.x, rect.y, 0, NULL);
+
       meta_surface_actor_process_damage (surface->surface_actor,
                                          rect.x * scale, rect.y * scale, rect.width * scale, rect.height * scale);
     }
@@ -177,6 +187,9 @@ calculate_surface_window_geometry (MetaWaylandSurface *surface,
   if (!CLUTTER_ACTOR_IS_VISIBLE (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);
 
@@ -403,7 +416,7 @@ commit_pending_state (MetaWaylandSurface      *surface,
       if (pending->buffer)
         {
           ensure_buffer_texture (pending->buffer);
-          meta_surface_actor_wayland_set_buffer (META_SURFACE_ACTOR_WAYLAND (surface->surface_actor), pending->buffer);
+          meta_surface_actor_wayland_set_texture (META_SURFACE_ACTOR_WAYLAND (surface->surface_actor), pending->buffer->texture);
         }
     }
 
@@ -1008,6 +1021,8 @@ xdg_shell_get_xdg_surface (struct wl_client *client,
       return;
     }
 
+  surface->xdg_shell_resource = resource;
+
   window = meta_window_wayland_new (meta_get_display (), surface);
   meta_wayland_surface_set_window (surface, window);
 }
@@ -1064,6 +1079,8 @@ xdg_shell_get_xdg_popup (struct wl_client *client,
       return;
     }
 
+  surface->xdg_shell_resource = resource;
+
   window = meta_window_wayland_new (meta_get_display (), surface);
   meta_window_move_frame (window, FALSE,
                           parent_surf->window->rect.x + x,
@@ -1085,41 +1102,13 @@ static const struct xdg_shell_interface meta_wayland_xdg_shell_interface = {
   xdg_shell_pong,
 };
 
-typedef struct {
-  struct wl_resource *resource;
-  struct wl_listener client_destroy_listener;
-} XdgShell;
-
-static void
-xdg_shell_handle_client_destroy (struct wl_listener *listener, void *data)
-{
-  XdgShell *xdg_shell = wl_container_of (listener, xdg_shell, client_destroy_listener);
-  g_slice_free (XdgShell, xdg_shell);
-}
-
-static struct wl_resource *
-get_xdg_shell_for_client (struct wl_client *client)
-{
-  struct wl_listener *listener;
-  XdgShell *xdg_shell;
-
-  listener = wl_client_get_destroy_listener (client, xdg_shell_handle_client_destroy);
-
-  /* No xdg_shell has been bound for this client */
-  if (listener == NULL)
-    return NULL;
-
-  xdg_shell = wl_container_of (listener, xdg_shell, client_destroy_listener);
-  return xdg_shell->resource;
-}
-
 static void
 bind_xdg_shell (struct wl_client *client,
                 void *data,
                 guint32 version,
                 guint32 id)
 {
-  XdgShell *xdg_shell;
+  struct wl_resource *resource;
 
   if (version != META_XDG_SHELL_VERSION)
     {
@@ -1127,13 +1116,8 @@ bind_xdg_shell (struct wl_client *client,
       return;
     }
 
-  xdg_shell = g_slice_new (XdgShell);
-
-  xdg_shell->resource = wl_resource_create (client, &xdg_shell_interface, version, id);
-  wl_resource_set_implementation (xdg_shell->resource, &meta_wayland_xdg_shell_interface, data, NULL);
-
-  xdg_shell->client_destroy_listener.notify = xdg_shell_handle_client_destroy;
-  wl_client_add_destroy_listener (client, &xdg_shell->client_destroy_listener);
+  resource = wl_resource_create (client, &xdg_shell_interface, version, id);
+  wl_resource_set_implementation (resource, &meta_wayland_xdg_shell_interface, data, NULL);
 }
 
 static void
@@ -1846,23 +1830,10 @@ void
 meta_wayland_surface_ping (MetaWaylandSurface *surface,
                            guint32             serial)
 {
-  if (surface->xdg_surface.resource)
-    {
-      struct wl_client *client = wl_resource_get_client (surface->resource);
-      struct wl_resource *xdg_shell = get_xdg_shell_for_client (client);
-
-      if (xdg_shell == NULL)
-        {
-          g_warning ("Trying to ping a surface without an xdg_shell bound. How does this happen?");
-          return;
-        }
-
-      xdg_shell_send_ping (xdg_shell, serial);
-    }
+  if (surface->xdg_shell_resource)
+    xdg_shell_send_ping (surface->xdg_shell_resource, serial);
   else if (surface->wl_shell_surface.resource)
-    {
-      wl_shell_surface_send_ping (surface->wl_shell_surface.resource, serial);
-    }
+    wl_shell_surface_send_ping (surface->wl_shell_surface.resource, serial);
 }
 
 void

src/wayland/meta-wayland-surface.h

@@ -81,6 +81,7 @@ struct _MetaWaylandSurface
   MetaWaylandCompositor *compositor;
   MetaSurfaceActor *surface_actor;
   MetaWindow *window;
+  struct wl_resource *xdg_shell_resource;
   MetaWaylandSurfaceExtension xdg_surface;
   MetaWaylandSurfaceExtension xdg_popup;
   MetaWaylandSurfaceExtension wl_shell_surface;

src/wayland/meta-wayland-touch.c

@@ -32,6 +32,10 @@
 #include "meta-surface-actor-wayland.h"
 #include "meta-wayland-private.h"
 
+#ifdef HAVE_NATIVE_BACKEND
+#include "backends/native/meta-backend-native.h"
+#endif
+
 struct _MetaWaylandTouchSurface
 {
   MetaWaylandSurface *surface;
@@ -472,6 +476,7 @@ meta_wayland_touch_cancel (MetaWaylandTouch *touch)
   g_list_free (surfaces);
 }
 
+#ifdef HAVE_NATIVE_BACKEND
 static gboolean
 evdev_filter_func (struct libinput_event *event,
                    gpointer               data)
@@ -508,6 +513,7 @@ evdev_filter_func (struct libinput_event *event,
 
   return CLUTTER_EVENT_PROPAGATE;
 }
+#endif
 
 void
 meta_wayland_touch_init (MetaWaylandTouch  *touch,
@@ -527,13 +533,23 @@ meta_wayland_touch_init (MetaWaylandTouch  *touch,
 
   manager = clutter_device_manager_get_default ();
   touch->device = clutter_device_manager_get_core_device (manager, CLUTTER_TOUCHSCREEN_DEVICE);
-  clutter_evdev_add_filter (evdev_filter_func, touch, NULL);
+
+#ifdef HAVE_NATIVE_BACKEND
+  MetaBackend *backend = meta_get_backend ();
+  if (META_IS_BACKEND_NATIVE (backend))
+    clutter_evdev_add_filter (evdev_filter_func, touch, NULL);
+#endif
 }
 
 void
 meta_wayland_touch_release (MetaWaylandTouch *touch)
 {
-  clutter_evdev_remove_filter (evdev_filter_func, touch);
+#ifdef HAVE_NATIVE_BACKEND
+  MetaBackend *backend = meta_get_backend ();
+  if (META_IS_BACKEND_NATIVE (backend))
+    clutter_evdev_remove_filter (evdev_filter_func, touch);
+#endif
+
   g_clear_pointer (&touch->touch_surfaces, (GDestroyNotify) g_hash_table_unref);
   g_clear_pointer (&touch->touches, (GDestroyNotify) g_hash_table_unref);
   touch->display = NULL;

src/wayland/protocol/xdg-shell.xml

@@ -45,7 +45,7 @@
 	they implement using static_assert to ensure the protocol and
 	implementation versions match.
       </description>
-      <entry name="current" value="3" summary="Always the latest version"/>
+      <entry name="current" value="4" summary="Always the latest version"/>
     </enum>
 
 
@@ -239,8 +239,8 @@
       <description summary="types of state on the surface">
         The different state values used on the surface. This is designed for
         state values like maximized, fullscreen. It is paired with the
-        request_change_state event to ensure that both the client and the
-        compositor setting the state can be synchronized.
+        configure event to ensure that both the client and the compositor
+        setting the state can be synchronized.
 
         States set in this way are double-buffered. They will get applied on
         the next commit.