Handle unmanaged surfaces motion

include/sway/tree/view.h

@@ -87,6 +87,8 @@ struct sway_xwayland_unmanaged {
 	struct wlr_xwayland_surface *wlr_xwayland_surface;
 	struct wl_list link;
 
+	int lx, ly;
+
 	struct wl_listener request_configure;
 	struct wl_listener commit;
 	struct wl_listener map;

sway/desktop/output.c

@@ -267,17 +267,14 @@ static void render_output(struct sway_output *output, struct timespec *when,
 
 	// render unmanaged views on top
 	struct wl_list *unmanaged = &root_container.sway_root->xwayland_unmanaged;
-	struct sway_xwayland_unmanaged *sway_surface;
-	wl_list_for_each(sway_surface, unmanaged, link) {
+	struct sway_xwayland_unmanaged *unmanaged_surface;
+	wl_list_for_each(unmanaged_surface, unmanaged, link) {
 		struct wlr_xwayland_surface *xsurface =
-			sway_surface->wlr_xwayland_surface;
-		if (xsurface->surface == NULL) {
-			continue;
-		}
+			unmanaged_surface->wlr_xwayland_surface;
 
 		const struct wlr_box view_box = {
-			.x = xsurface->x,
-			.y = xsurface->y,
+			.x = unmanaged_surface->lx,
+			.y = unmanaged_surface->ly,
 			.width = xsurface->width,
 			.height = xsurface->height,
 		};

sway/desktop/xwayland.c

@@ -29,19 +29,35 @@ static void unmanaged_handle_commit(struct wl_listener *listener, void *data) {
 	struct sway_xwayland_unmanaged *surface =
 		wl_container_of(listener, surface, commit);
 	struct wlr_xwayland_surface *xsurface = surface->wlr_xwayland_surface;
-	desktop_damage_from_surface(xsurface->surface, xsurface->x, xsurface->y);
-	// TODO: handle window motion
+
+	if (xsurface->x != surface->lx || xsurface->y != surface->ly) {
+		// Surface has moved
+		desktop_damage_whole_surface(xsurface->surface,
+			surface->lx, surface->ly);
+		surface->lx = xsurface->x;
+		surface->ly = xsurface->y;
+		desktop_damage_whole_surface(xsurface->surface,
+			surface->lx, surface->ly);
+	} else {
+		desktop_damage_from_surface(xsurface->surface,
+			xsurface->x, xsurface->y);
+	}
 }
 
 static void unmanaged_handle_map(struct wl_listener *listener, void *data) {
 	struct sway_xwayland_unmanaged *surface =
 		wl_container_of(listener, surface, map);
 	struct wlr_xwayland_surface *xsurface = surface->wlr_xwayland_surface;
+
 	wl_list_insert(&root_container.sway_root->xwayland_unmanaged,
 		&surface->link);
+
 	wl_signal_add(&xsurface->surface->events.commit, &surface->commit);
 	surface->commit.notify = unmanaged_handle_commit;
-	desktop_damage_whole_surface(xsurface->surface, xsurface->x, xsurface->y);
+
+	surface->lx = xsurface->x;
+	surface->ly = xsurface->y;
+	desktop_damage_whole_surface(xsurface->surface, surface->lx, surface->ly);
 }
 
 static void unmanaged_handle_unmap(struct wl_listener *listener, void *data) {

sway/input/cursor.c

@@ -48,17 +48,13 @@ static struct sway_container *container_at_cursor(struct sway_cursor *cursor,
 		struct wlr_surface **surface, double *sx, double *sy) {
 	// check for unmanaged views first
 	struct wl_list *unmanaged = &root_container.sway_root->xwayland_unmanaged;
-	struct sway_xwayland_unmanaged *sway_surface;
-	wl_list_for_each_reverse(sway_surface, unmanaged, link) {
+	struct sway_xwayland_unmanaged *unmanaged_surface;
+	wl_list_for_each_reverse(unmanaged_surface, unmanaged, link) {
 		struct wlr_xwayland_surface *xsurface =
-			sway_surface->wlr_xwayland_surface;
-		if (xsurface->surface == NULL) {
-			continue;
-		}
-
+			unmanaged_surface->wlr_xwayland_surface;
 		struct wlr_box box = {
-			.x = xsurface->x,
-			.y = xsurface->y,
+			.x = unmanaged_surface->lx,
+			.y = unmanaged_surface->ly,
 			.width = xsurface->width,
 			.height = xsurface->height,
 		};