Add a function to retrieve the current slot

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

2 files changed, 17 insertions, 0 deletions

diff --git a/libevdev/libevdev.c b/libevdev/libevdev.c
index 40bbe37..0523c53 100644
--- a/libevdev/libevdev.c
+++ b/libevdev/libevdev.c
@@ -677,6 +677,12 @@ libevdev_get_num_slots(const struct libevdev *dev)
 	return dev->num_slots;
 }
 
+int
+libevdev_get_current_slot(const struct libevdev *dev)
+{
+	return dev->current_slot;
+}
+
 const struct input_absinfo*
 libevdev_get_abs_info(const struct libevdev *dev, unsigned int code)
 {
diff --git a/libevdev/libevdev.h b/libevdev/libevdev.h
index b067015..4a6e183 100644
--- a/libevdev/libevdev.h
+++ b/libevdev/libevdev.h
@@ -309,6 +309,17 @@ int libevdev_fetch_slot_value(const struct libevdev *dev, unsigned int slot, uns
 int libevdev_get_num_slots(const struct libevdev *dev);
 
 /**
+ * Get the currently active slot. This may differ from the value
+ * an ioctl may return at this time as events may have been read off the fd
+ * since changing the slot value but those events are still in the buffer
+ * waiting to be processed. The returned value is the value a caller would
+ * see if it were to process events manually one-by-one.
+ *
+ * @return the currently active slot (logically)
+ */
+int libevdev_get_current_slot(const struct libevdev *dev);
+
+/**
  * Forcibly enable an event type on this device, even if the underlying
  * device does not support it. While this cannot make the device actually
  * report such events, it will now return true for libevdev_has_event_type.