[retro-gtk/gamepad] Add some traces

[Adrien Plazas <aplazas src gnome org>]

commit d7d05b31ff5409e305935fc16b0a064afb0e94c4
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Tue Jul 25 15:42:40 2017 +0200

    Add some traces

 retro-gtk/input/retro-gamepad.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/retro-gtk/input/retro-gamepad.c b/retro-gtk/input/retro-gamepad.c
index 29767df..d947c9c 100644
--- a/retro-gtk/input/retro-gamepad.c
+++ b/retro-gtk/input/retro-gamepad.c
@@ -155,8 +155,12 @@ retro_gamepad_internal_get_input_state (RetroInputDevice *base,
 
   switch (device) {
   case RETRO_DEVICE_TYPE_JOYPAD:
+    g_message ("retro_gamepad_internal_get_input_state: id %u", id);
+
     g_return_val_if_fail (id < RETRO_JOYPAD_ID_COUNT, 0);
 
+    g_message ("    pressed: %d", RETRO_GAMEPAD_INTERNAL (self)->buttons[id]);
+
     return RETRO_GAMEPAD_INTERNAL (self)->buttons[id];
   case RETRO_DEVICE_TYPE_ANALOG:
     g_return_val_if_fail (index < RETRO_ANALOG_INDEX_COUNT, 0);