[Bf-blender-cvs] [ecbf838feef] master: Cleanup: comment on source of button event codes

[Christian Rauch]

Commit: ecbf838feefc9b064b71297b74613e7b094ee8d7
Author: Christian Rauch
Date:   Wed Jul 7 13:21:57 2021 +0100
Branches: master
https://developer.blender.org/rBecbf838feefc9b064b71297b74613e7b094ee8d7

Cleanup: comment on source of button event codes

===================================================================

M	intern/ghost/intern/GHOST_SystemWayland.cpp

===================================================================

diff --git a/intern/ghost/intern/GHOST_SystemWayland.cpp b/intern/ghost/intern/GHOST_SystemWayland.cpp
index 72c7c525114..77928b6edb5 100644
--- a/intern/ghost/intern/GHOST_SystemWayland.cpp
+++ b/intern/ghost/intern/GHOST_SystemWayland.cpp
@@ -52,6 +52,13 @@
 
 #include <cstring>
 
+#include <linux/input-event-codes.h>
+
+/* selected input event code defines from 'linux/input-event-codes.h'
+ * We include some of the button input event codes here, since the header is
+ * only available in more recent kernel versions. The event codes are used to
+ * to differentiate from which mouse button an event comes from.
+ */
 #define BTN_LEFT    0x110
 #define BTN_RIGHT   0x111
 #define BTN_MIDDLE  0x112