[gnome-chess] Use libadwaita

[Michael Catanzaro <mcatanzaro src gnome org>]

commit ffd02d46d816928feb3abe50275caa6f8a1758a1
Author: Michael Catanzaro <mcatanzaro redhat com>
Date:   Mon Nov 29 09:54:09 2021 -0600

    Use libadwaita
    
    This makes Chess nice and pretty and ready for GNOME 42.

 meson.build          | 1 +
 src/gnome-chess.vala | 2 +-
 src/meson.build      | 1 +
 3 files changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index ea9a4e0..09676a4 100644
--- a/meson.build
+++ b/meson.build
@@ -33,6 +33,7 @@ gio = dependency('gio-unix-2.0', version: '>=' + min_glib_version)
 glib = dependency('glib-2.0', version: '>=' + min_glib_version)
 gmodule = dependency('gmodule-2.0', version: '>=' + min_glib_version)
 gtk = dependency('gtk4')
+libadwaita = dependency('libadwaita-1')
 librsvg = dependency('librsvg-2.0', version: '>= 2.46.0')
 
 posix = meson.get_compiler('vala').find_library('posix')
diff --git a/src/gnome-chess.vala b/src/gnome-chess.vala
index 2792341..3e8e68b 100644
--- a/src/gnome-chess.vala
+++ b/src/gnome-chess.vala
@@ -27,7 +27,7 @@ public const string HELP_ACTION_NAME = "help";
 public const string ABOUT_ACTION_NAME = "about";
 public const string QUIT_ACTION_NAME = "quit";
 
-public class ChessApplication : Gtk.Application
+public class ChessApplication : Adw.Application
 {
     private GLib.Settings settings;
 
diff --git a/src/meson.build b/src/meson.build
index 9e75867..d59af83 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -22,6 +22,7 @@ chess_deps = [
   glib,
   gmodule,
   gtk,
+  libadwaita,
   librsvg,
   posix,
   libchess_dep,