rootston: request set cursor

include/rootston/cursor.h

@@ -53,6 +53,11 @@ struct roots_cursor {
 
 	struct wl_listener tool_axis;
 	struct wl_listener tool_tip;
+
+	struct wl_listener pointer_grab_begin;
+	struct wl_listener pointer_grab_end;
+
+	struct wl_listener request_set_cursor;
 };
 
 struct roots_cursor *roots_cursor_create(struct roots_seat *seat);
@@ -86,4 +91,7 @@ void roots_cursor_handle_tool_axis(struct roots_cursor *cursor,
 void roots_cursor_handle_tool_tip(struct roots_cursor *cursor,
 		struct wlr_event_tablet_tool_tip *event);
 
+void roots_cursor_handle_request_set_cursor(struct roots_cursor *cursor,
+		struct wlr_seat_pointer_request_set_cursor_event *event);
+
 #endif

include/rootston/input.h

@@ -17,11 +17,6 @@ struct roots_input {
 	struct wl_listener input_remove;
 
 	struct wl_list seats;
-
-	struct wl_listener pointer_grab_begin;
-	struct wl_listener pointer_grab_end;
-
-	struct wl_listener request_set_cursor;
 };
 
 struct roots_input *input_create(struct roots_server *server,

rootston/roots_cursor.c

@@ -281,3 +281,24 @@ void roots_cursor_handle_tool_tip(struct roots_cursor *cursor,
 	roots_cursor_press_button(cursor, event->device,
 		event->time_msec, BTN_LEFT, event->state);
 }
+
+void roots_cursor_handle_request_set_cursor(struct roots_cursor *cursor,
+		struct wlr_seat_pointer_request_set_cursor_event *event) {
+	struct wlr_surface *focused_surface =
+		event->seat_client->seat->pointer_state.focused_surface;
+	bool has_focused = focused_surface != NULL && focused_surface->resource != NULL;
+	struct wl_client *focused_client = NULL;
+	if (has_focused) {
+		focused_client = wl_resource_get_client(focused_surface->resource);
+	}
+	if (event->seat_client->client != focused_client ||
+			cursor->mode != ROOTS_CURSOR_PASSTHROUGH) {
+		wlr_log(L_DEBUG, "Denying request to set cursor from unfocused client");
+		return;
+	}
+
+	wlr_log(L_DEBUG, "Setting client cursor");
+	wlr_cursor_set_surface(cursor->cursor, event->surface, event->hotspot_x,
+		event->hotspot_y);
+	cursor->cursor_client = event->seat_client->client;
+}

rootston/seat.c

@@ -89,6 +89,14 @@ static void handle_tool_tip(struct wl_listener *listener, void *data) {
 	roots_cursor_handle_tool_tip(cursor, event);
 }
 
+static void handle_request_set_cursor(struct wl_listener *listener,
+		void *data) {
+	struct roots_cursor *cursor =
+		wl_container_of(listener, cursor, request_set_cursor);
+	struct wlr_seat_pointer_request_set_cursor_event *event = data;
+	roots_cursor_handle_request_set_cursor(cursor, event);
+}
+
 static void seat_reset_device_mappings(struct roots_seat *seat, struct wlr_input_device *device) {
 	struct wlr_cursor *cursor = seat->cursor->cursor;
 	struct roots_config *config = seat->input->config;
@@ -224,6 +232,10 @@ static void roots_seat_init_cursor(struct roots_seat *seat) {
 
 	wl_signal_add(&wlr_cursor->events.tablet_tool_tip, &seat->cursor->tool_tip);
 	seat->cursor->tool_tip.notify = handle_tool_tip;
+
+	wl_signal_add(&seat->seat->events.request_set_cursor,
+			&seat->cursor->request_set_cursor);
+	seat->cursor->request_set_cursor.notify = handle_request_set_cursor;
 }
 
 struct roots_seat *roots_seat_create(struct roots_input *input, char *name) {
@@ -240,16 +252,17 @@ struct roots_seat *roots_seat_create(struct roots_input *input, char *name) {
 
 	seat->input = input;
 
-	roots_seat_init_cursor(seat);
-	if (!seat->cursor) {
+	seat->seat = wlr_seat_create(input->server->wl_display, name);
+	if (!seat->seat) {
 		free(seat);
+		roots_cursor_destroy(seat->cursor);
 		return NULL;
 	}
 
-	seat->seat = wlr_seat_create(input->server->wl_display, name);
-	if (!seat->seat) {
+	roots_seat_init_cursor(seat);
+	if (!seat->cursor) {
+		wlr_seat_destroy(seat->seat);
 		free(seat);
-		roots_cursor_destroy(seat->cursor);
 		return NULL;
 	}