From 06453ba7a533b919460d78de0edf1cd980bc638a Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Thu, 19 Dec 2013 11:22:53 +1000
Subject: [PATCH] Add libinput_event_get_context()

Add a function to retrieve the libinput context from any event.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
---
 src/libinput.c | 13 +++++++++++--
 src/libinput.h | 11 +++++++++++
 2 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/src/libinput.c b/src/libinput.c
index a9e458f2..d2e7596b 100644
--- a/src/libinput.c
+++ b/src/libinput.c
@@ -50,6 +50,7 @@ struct libinput_source {
 
 struct libinput_event {
 	enum libinput_event_type type;
+	struct libinput *libinput;
 	union libinput_event_target target;
 };
 
@@ -133,6 +134,12 @@ libinput_event_get_target(struct libinput_event *event)
 	return event->target;
 }
 
+LIBINPUT_EXPORT struct libinput*
+libinput_event_get_context(struct libinput_event *event)
+{
+	return event->libinput;
+}
+
 LIBINPUT_EXPORT struct libinput_seat *
 libinput_event_added_seat_get_seat(struct libinput_event_added_seat *event)
 {
@@ -596,10 +603,12 @@ libinput_dispatch(struct libinput *libinput)
 
 static void
 init_event_base(struct libinput_event *event,
+		struct libinput *libinput,
 		enum libinput_event_type type,
 		union libinput_event_target target)
 {
 	event->type = type;
+	event->libinput = libinput;
 	event->target = target;
 }
 
@@ -608,7 +617,7 @@ post_base_event(struct libinput *libinput,
 		enum libinput_event_type type,
 		struct libinput_event *event)
 {
-	init_event_base(event, type,
+	init_event_base(event, libinput, type,
 			(union libinput_event_target) { .libinput = libinput });
 	libinput_post_event(libinput, event);
 }
@@ -618,7 +627,7 @@ post_device_event(struct libinput_device *device,
 		  enum libinput_event_type type,
 		  struct libinput_event *event)
 {
-	init_event_base(event, type,
+	init_event_base(event, device->seat->libinput, type,
 			(union libinput_event_target) { .device = device });
 	libinput_post_event(device->seat->libinput, event);
 }
diff --git a/src/libinput.h b/src/libinput.h
index 894312df..5f4f51ed 100644
--- a/src/libinput.h
+++ b/src/libinput.h
@@ -240,6 +240,17 @@ libinput_event_get_type(struct libinput_event *event);
 union libinput_event_target
 libinput_event_get_target(struct libinput_event *event);
 
+/**
+ * @ingroup event
+ *
+ * Get the libinput context from the event.
+ *
+ * @param event The libinput event
+ * @return The libinput context for this event.
+ */
+struct libinput*
+libinput_event_get_context(struct libinput_event *event);
+
 /**
  * @defgroup event_added_seat Added seat event
  */