Add relative pointer

include/sway/server.h

@@ -9,6 +9,7 @@
 #include <wlr/types/wlr_data_device.h>
 #include <wlr/types/wlr_layer_shell_v1.h>
 #include <wlr/types/wlr_presentation_time.h>
+#include <wlr/types/wlr_relative_pointer_v1.h>
 #include <wlr/types/wlr_server_decoration.h>
 #include <wlr/types/wlr_xdg_shell_v6.h>
 #include <wlr/types/wlr_xdg_shell.h>
@@ -51,6 +52,8 @@ struct sway_server {
 	struct wl_listener xwayland_ready;
 #endif
 
+	struct wlr_relative_pointer_manager_v1 *relative_pointer_manager;
+
 	struct wlr_server_decoration_manager *server_decoration_manager;
 	struct wl_listener server_decoration;
 	struct wl_list decorations; // sway_server_decoration::link

sway/input/cursor.c

@@ -403,6 +403,14 @@ static void handle_cursor_motion(struct wl_listener *listener, void *data) {
 	double dx = event->delta_x;
 	double dy = event->delta_y;
 
+	double dx_unaccel = event->unaccel_dx;
+	double dy_unaccel = event->unaccel_dy;
+
+	wlr_relative_pointer_manager_v1_send_relative_motion(
+		server.relative_pointer_manager,
+		cursor->seat->wlr_seat, event->time_msec, dx, dy,
+		dx_unaccel, dy_unaccel);
+
 	struct wlr_surface *surface = NULL;
 	double sx, sy;
 	struct sway_node *node = node_at_coords(cursor->seat,
@@ -438,6 +446,12 @@ static void cursor_motion_absolute(struct sway_cursor *cursor,
 	wlr_cursor_absolute_to_layout_coords(cursor->cursor, dev,
 		x, y, &lx, &ly);
 
+	double dx = lx - cursor->cursor->x;
+	double dy = ly - cursor->cursor->y;
+	wlr_relative_pointer_manager_v1_send_relative_motion(
+		server.relative_pointer_manager,
+		cursor->seat->wlr_seat, (uint64_t)time_msec * 1000, dx, dy, dx, dy);
+
 	struct wlr_surface *surface = NULL;
 	double sx, sy;
 	struct sway_node *node = node_at_coords(cursor->seat,

sway/server.c

@@ -15,6 +15,7 @@
 #include <wlr/types/wlr_gtk_primary_selection.h>
 #include <wlr/types/wlr_idle.h>
 #include <wlr/types/wlr_layer_shell_v1.h>
+#include <wlr/types/wlr_relative_pointer_v1.h>
 #include <wlr/types/wlr_pointer_constraints_v1.h>
 #include <wlr/types/wlr_screencopy_v1.h>
 #include <wlr/types/wlr_server_decoration.h>
@@ -106,6 +107,9 @@ bool server_init(struct sway_server *server) {
 	server->xdg_decoration.notify = handle_xdg_decoration;
 	wl_list_init(&server->xdg_decorations);
 
+	server->relative_pointer_manager =
+		wlr_relative_pointer_manager_v1_create(server->wl_display);
+
 	server->pointer_constraints =
 		wlr_pointer_constraints_v1_create(server->wl_display);
 	server->pointer_constraint.notify = handle_pointer_constraint;