[gtk/inspector-layouts: 4/5] inspector: Show keyboard layouts

[Matthias Clasen <matthiasc src gnome org>]

commit dfecc8fe0271b5381d619dd5fa471cf147f6753c
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Apr 26 00:15:34 2021 -0400

    inspector: Show keyboard layouts

 gtk/inspector/general.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
---
diff --git a/gtk/inspector/general.c b/gtk/inspector/general.c
index 3bc2c5a2cd..fa485ac239 100644
--- a/gtk/inspector/general.c
+++ b/gtk/inspector/general.c
@@ -51,6 +51,7 @@
 #ifdef GDK_WINDOWING_WAYLAND
 #include "wayland/gdkwayland.h"
 #include <epoxy/egl.h>
+#include <xkbcommon/xkbcommon.h>
 #endif
 
 #ifdef GDK_WINDOWING_BROADWAY
@@ -754,6 +755,26 @@ add_device (GtkInspectorGeneral *gen,
       g_free (text);
     }
 
+#ifdef GDK_WINDOWING_WAYLAND
+  if (GDK_IS_WAYLAND_DEVICE (device) &&
+      gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
+    {
+      struct xkb_keymap *keymap = gdk_wayland_device_get_xkb_keymap (device);
+      GString *s;
+
+      s = g_string_new ("");
+      for (int i = 0; i < xkb_keymap_num_layouts (keymap); i++)
+        {
+          if (s->len > 0)
+            g_string_append (s, ", ");
+          g_string_append (s, xkb_keymap_layout_get_name (keymap, i));
+        }
+
+      add_label_row (gen, GTK_LIST_BOX (gen->device_box), "Layouts", s->str, 20);
+      g_string_free (s, TRUE);
+    }
+#endif
+
   g_type_class_unref (class);
 }