widget-factory: Remove libcanberra support

GTK cannot depend on libcanberra-gtk which depends on GTK. This causes
a circular dependency and is especially neat if installed GTK is
different enough from uninstalled GTK.

configure.ac

@@ -1677,43 +1677,6 @@ if test "$have_colord" = "yes"; then
 fi
 AM_CONDITIONAL(HAVE_COLORD, test "x$have_colord" = "xyes")
 
-##################################################
-# Check for libcanberra (only used in examples)
-##################################################
-
-AC_ARG_ENABLE(libcanberra,
-              [AS_HELP_STRING([--enable-libcanberra],
-                              [enable libcanberra support in examples [default=auto]])],
-              [enable_libcanberra="$enableval"],
-              [enable_libcanberra=auto])
-
-if test "$enable_x11_backend" != "yes"; then
-  enable_libcanberra=no
-fi
-
-AC_MSG_CHECKING([whether to use libcanberra])
-if test "$enable_libcanberra" != "no"; then
-  AC_MSG_RESULT([yes])
-else
-  AC_MSG_RESULT([no])
-fi
-
-have_libcanberra=no
-if test "$enable_libcanberra" != "no"; then
-    PKG_CHECK_MODULES(LIBCANBERRA, libcanberra-gtk3,
-                      have_libcanberra=yes, have_libcanberra=no)
-    if test "$enable_libcanberra" = "yes"; then
-        if test "$have_libcanberra" = "no"; then
-            AC_MSG_ERROR([--enable-libcanberra specified, but not available])
-        fi
-    fi
-fi
-
-if test "$have_libcanberra" = "yes"; then
-    AC_DEFINE(HAVE_LIBCANBERRA, 1, [define if we have libcanberra])
-fi
-AM_CONDITIONAL(HAVE_LIBCANBERRA, test "x$have_libcanberra" = "xyes")
-
 ##################################################
 # Checks for gtk-doc and docbook-tools
 ##################################################
@@ -1988,7 +1951,6 @@ echo "        Print backends:       $PRINT_BACKENDS"
 echo "        Dynamic modules:      $build_dynamic_modules"
 echo "        Included immodules:   $included_immodules"
 echo "        colord support:       $have_colord"
-echo "        libcanberra support:  $have_libcanberra"
 echo "        Introspection:        $found_introspection"
 echo "        Debugging:            $enable_debug"
 echo "        Documentation:        $enable_gtk_doc"

demos/widget-factory/Makefile.am

@@ -19,13 +19,13 @@ gtk3_widget_factory_CPPFLAGS = 		\
 	-I$(top_srcdir)			\
 	$(GTK_DEBUG_FLAGS)		\
 	$(GTK_DEP_CFLAGS)		\
-	$(LIBCANBERRA_CFLAGS)
+	$(NULL)
 
 gtk3_widget_factory_LDADD = 		\
 	$(top_builddir)/gdk/libgdk-3.la \
 	$(top_builddir)/gtk/libgtk-3.la \
 	$(GTK_DEP_LIBS)			\
-	$(LIBCANBERRA_LIBS)
+	$(NULL)
 
 widget_factory_resources.c: widget-factory.gresource.xml $(shell $(GLIB_COMPILE_RESOURCES) --sourcedir=$(srcdir) --generate-dependencies $(srcdir)/widget-factory.gresource.xml)
 	$(AM_V_GEN) $(GLIB_COMPILE_RESOURCES) --target=$@ --sourcedir=$(srcdir) --generate-source $<

demos/widget-factory/widget-factory.c

@@ -22,9 +22,6 @@
 
 #include <glib/gi18n.h>
 #include <gtk/gtk.h>
-#ifdef HAVE_LIBCANBERRA
-#include <canberra-gtk.h>
-#endif
 
 static void
 change_theme_state (GSimpleAction *action,
@@ -658,11 +655,6 @@ overshot (GtkScrolledWindow *sw, GtkPositionType pos, GtkWidget *widget)
           g_object_set_data (G_OBJECT (widget), "Gold", NULL);
         }
 
-#ifdef HAVE_LIBCANBERRA
-      if (silver || gold)
-        ca_gtk_play_for_widget (widget, 0, "event.id", "message", NULL); 
-#endif
-
       return;
     }
 
@@ -703,9 +695,6 @@ overshot (GtkScrolledWindow *sw, GtkPositionType pos, GtkWidget *widget)
   row = gtk_widget_get_parent (row);
   gtk_list_box_row_set_activatable (GTK_LIST_BOX_ROW (row), FALSE);
   g_object_set_data (G_OBJECT (widget), color, row);
-#ifdef HAVE_LIBCANBERRA
-  ca_gtk_play_for_widget (widget, 0, "event.id", "complete", NULL); 
-#endif
 }
 
 static void