state: Add xkb_state_key_get_consumed_mods

This retrieves the mask of consumed modifiers for a given key and state,
which is helpful for toolkits without having them to do it one modifier
at a time, or pass in 0xFFFFFFFF to xkb_state_remove_consumed_mods to
"reverse-engineer" the consumed mods.

1 files changed, 11 insertions, 0 deletions

diff --git a/src/state.c b/src/state.c
index 8b1a526..f409a3e 100644
--- a/src/state.c
+++ b/src/state.c
@@ -1169,3 +1169,14 @@ xkb_state_mod_mask_remove_consumed(struct xkb_state *state, xkb_keycode_t kc,
 
     return mask & ~key_get_consumed(state, key);
 }
+
+XKB_EXPORT xkb_mod_mask_t
+xkb_state_key_get_consumed_mods(struct xkb_state *state, xkb_keycode_t kc)
+{
+    const struct xkb_key *key = XkbKey(state->keymap, kc);
+
+    if (!key)
+        return 0;
+
+    return key_get_consumed(state, key);
+}