[mutter/cherry-pick-e0811ce1] clutter/x11: Consider remapped keys when guessing the keycode from the keysym



commit 0f7c35b94a14b06d2d606f4cf13800b6557cbb86
Author: Andrea Azzarone <andrea azzarone canonical com>
Date:   Tue Jan 22 17:20:37 2019 +0000

    clutter/x11: Consider remapped keys when guessing the keycode from the keysym
    
    Since e3e933c4 a keyval can be temporarily remapped to an unused keycode. Due to
    some limitations in XTestFakeKeyEvent, the remapping has to be done in the first
    xkb group/layout. In case there are two or more keyboard layouts enabled and the
    selected keyboard layout is not the first, clutter_keymap_x11_keycode_for_keyval
    will fail to retrieve the correct keycode for a remapped keyval. Let's use the
    reserved_keycodes map in order to retrieve the correct keycode if needed.
    
    Fixes: https://gitlab.gnome.org/GNOME/mutter/issues/443
    
    
    (cherry picked from commit e0811ce1416f93906026a18fda4cd6811594cfb2)

 clutter/clutter/x11/clutter-keymap-x11.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
---
diff --git a/clutter/clutter/x11/clutter-keymap-x11.c b/clutter/clutter/x11/clutter-keymap-x11.c
index c34e676a4..32cb5a279 100644
--- a/clutter/clutter/x11/clutter-keymap-x11.c
+++ b/clutter/clutter/x11/clutter-keymap-x11.c
@@ -838,6 +838,26 @@ clutter_keymap_x11_keycode_for_keyval (ClutterKeymapX11 *keymap_x11,
         }
     }
 
+  if (!found)
+    {
+      GHashTableIter iter;
+      gpointer key, value;
+
+      g_hash_table_iter_init (&iter, keymap_x11->reserved_keycodes);
+      while (!found && g_hash_table_iter_next (&iter, &key, &value))
+        {
+          guint reserved_keycode = GPOINTER_TO_UINT (key);
+          guint reserved_keysym = GPOINTER_TO_UINT (value);
+
+          if (keyval == reserved_keysym)
+            {
+              *keycode_out = reserved_keycode;
+              *level_out = 0;
+              found = TRUE;
+            }
+        }
+    }
+
   g_free (keys);
   return found;
 }


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