From 4550ec47163796d11f05c4229c9cb9293089145e Mon Sep 17 00:00:00 2001
From: Christian Helmuth <christian.helmuth@genode-labs.com>
Date: Fri, 24 Jun 2022 14:44:56 +0200
Subject: [PATCH] genode_c_api: key-press/release and relative-motion events

Issue #4543
---
 repos/os/include/genode_c_api/event.h  |  8 ++++++++
 repos/os/src/lib/genode_c_api/event.cc | 22 ++++++++++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/repos/os/include/genode_c_api/event.h b/repos/os/include/genode_c_api/event.h
index 5b95e0fc10..826f68965a 100644
--- a/repos/os/include/genode_c_api/event.h
+++ b/repos/os/include/genode_c_api/event.h
@@ -1,6 +1,7 @@
 /*
  * \brief  C interface to Genode's event session
  * \author Norman Feske
+ * \author Christian Helmuth
  * \date   2021-09-29
  */
 
@@ -62,9 +63,16 @@ struct genode_event_submit;
 
 /**
  * Interface called by 'genode_event_generator_t' to submit events
+ *
+ * Note, keycode values must conform to os/include/input/keycodes.h.
  */
 struct genode_event_submit
 {
+	void (*press) (struct genode_event_submit *, unsigned keycode);
+	void (*release) (struct genode_event_submit *, unsigned keycode);
+
+	void (*rel_motion) (struct genode_event_submit *, int x, int y);
+
 	void (*touch) (struct genode_event_submit *,
 	               struct genode_event_touch_args const *);
 
diff --git a/repos/os/src/lib/genode_c_api/event.cc b/repos/os/src/lib/genode_c_api/event.cc
index 2be248ef39..87834ad32f 100644
--- a/repos/os/src/lib/genode_c_api/event.cc
+++ b/repos/os/src/lib/genode_c_api/event.cc
@@ -1,6 +1,7 @@
 /*
  * \brief  C interface to Genode's event session
  * \author Norman Feske
+ * \author Christian Helmuth
  * \date   2021-09-29
  */
 
@@ -72,6 +73,24 @@ namespace {
 			fn(static_cast<Submit *>(myself)->batch);
 		}
 
+		static void _press(struct genode_event_submit *myself, unsigned keycode)
+		{
+			_with_batch(myself, [&] (Event::Session_client::Batch &batch) {
+				batch.submit(Input::Press { Input::Keycode(keycode) }); });
+		}
+
+		static void _release(struct genode_event_submit *myself, unsigned keycode)
+		{
+			_with_batch(myself, [&] (Event::Session_client::Batch &batch) {
+				batch.submit(Input::Release { Input::Keycode(keycode) }); });
+		}
+
+		static void _rel_motion(struct genode_event_submit *myself, int x, int y)
+		{
+			_with_batch(myself, [&] (Event::Session_client::Batch &batch) {
+				batch.submit(Input::Relative_motion { x, y }); });
+		}
+
 		static void _touch(struct genode_event_submit *myself,
 		                   struct genode_event_touch_args const *args)
 		{
@@ -94,6 +113,9 @@ namespace {
 		:
 			batch(batch)
 		{
+			press         = _press;
+			release       = _release;
+			rel_motion    = _rel_motion;
 			touch         = _touch;
 			touch_release = _touch_release;
 		};