From 2f22eb5d28b2a2a1128150fa390d6d90625625fb Mon Sep 17 00:00:00 2001
From: Zai-Kun <122824602+Zai-Kun@users.noreply.github.com>
Date: Thu, 23 Jan 2025 16:22:23 +0500
Subject: [PATCH] Add support for mouse movement events through Sway IPC

---
 include/ipc.h             |  1 +
 include/sway/ipc-server.h |  1 +
 sway/input/cursor.c       |  2 ++
 sway/ipc-server.c         | 17 +++++++++++++++++
 4 files changed, 21 insertions(+)

diff --git a/include/ipc.h b/include/ipc.h
index ff0117502..c97985b6e 100644
--- a/include/ipc.h
+++ b/include/ipc.h
@@ -32,6 +32,7 @@ enum ipc_command_type {
 	IPC_EVENT_BINDING = ((1<<31) | 5),
 	IPC_EVENT_SHUTDOWN = ((1<<31) | 6),
 	IPC_EVENT_TICK = ((1<<31) | 7),
+	IPC_EVENT_CURSOR_MOVEMENT = ((1<<31) | 8),
 
 	// sway-specific event types
 	IPC_EVENT_BAR_STATE_UPDATE = ((1<<31) | 20),
diff --git a/include/sway/ipc-server.h b/include/sway/ipc-server.h
index d4c009427..3a434aade 100644
--- a/include/sway/ipc-server.h
+++ b/include/sway/ipc-server.h
@@ -22,5 +22,6 @@ void ipc_event_shutdown(const char *reason);
 void ipc_event_binding(struct sway_binding *binding);
 void ipc_event_input(const char *change, struct sway_input_device *device);
 void ipc_event_output(void);
+void ipc_event_cursor_movement(double x, double y);
 
 #endif
diff --git a/sway/input/cursor.c b/sway/input/cursor.c
index e8c451183..6e11683f0 100644
--- a/sway/input/cursor.c
+++ b/sway/input/cursor.c
@@ -31,6 +31,7 @@
 #include "sway/tree/view.h"
 #include "sway/tree/workspace.h"
 #include "wlr-layer-shell-unstable-v1-protocol.h"
+#include "sway/ipc-server.h"
 
 static uint32_t get_current_time_msec(void) {
 	struct timespec now;
@@ -335,6 +336,7 @@ static void handle_pointer_motion_relative(
 
 	pointer_motion(cursor, e->time_msec, &e->pointer->base, e->delta_x,
 		e->delta_y, e->unaccel_dx, e->unaccel_dy);
+	ipc_event_cursor_movement(cursor->cursor->x, cursor->cursor->y);
 }
 
 static void handle_pointer_motion_absolute(
diff --git a/sway/ipc-server.c b/sway/ipc-server.c
index b934bb568..5bc95294e 100644
--- a/sway/ipc-server.c
+++ b/sway/ipc-server.c
@@ -521,6 +521,21 @@ void ipc_event_output(void) {
 	json_object_put(json);
 }
 
+void ipc_event_cursor_movement(double x, double y) {
+    if (!ipc_has_event_listeners(IPC_EVENT_CURSOR_MOVEMENT)) {
+        return;
+    }
+    sway_log(SWAY_DEBUG, "Sending cursor_movement event: x=%f, y=%f", x, y);
+
+    json_object *obj = json_object_new_object();
+    json_object_object_add(obj, "x", json_object_new_double(x));
+    json_object_object_add(obj, "y", json_object_new_double(y));
+
+    const char *json_string = json_object_to_json_string(obj);
+    ipc_send_event(json_string, IPC_EVENT_CURSOR_MOVEMENT);
+    json_object_put(obj);
+}
+
 int ipc_client_handle_writable(int client_fd, uint32_t mask, void *data) {
 	struct ipc_client *client = data;
 
@@ -761,6 +776,8 @@ void ipc_client_handle_command(struct ipc_client *client, uint32_t payload_lengt
 			} else if (strcmp(event_type, "tick") == 0) {
 				client->subscribed_events |= event_mask(IPC_EVENT_TICK);
 				is_tick = true;
+			} else if (strcmp(event_type, "cursor_movement") == 0) {
+				client->subscribed_events |= event_mask(IPC_EVENT_CURSOR_MOVEMENT);
 			} else if (strcmp(event_type, "input") == 0) {
 				client->subscribed_events |= event_mask(IPC_EVENT_INPUT);
 			} else {