xwayland views may reposition themselves

[Hjdskes]

From #176:

Sometimes, xwayland views may reposition themselves. This is not handled correctly leading to some dropdown menus appearing in wrong positions. In order to circumvent this, we added something similar to the following patch to cagebreak (I'm not quite sure if this is the correct use of lx and ly in your convention and haven't been able to conclusively test this due to the NPD bug above). We are also experiencing something similar with xdg_popup at the moment in Cagebreak but haven't figured out yet what is happening there.

Proposed patch:

```diff diff --git a/xwayland.c b/xwayland.c index 53c9768..aa55307 100644 --- a/xwayland.c +++ b/xwayland.c @@ -119,9 +119,28 @@ handle_xwayland_surface_request_fullscreen(struct wl_listener *listener, void *d static void handle_xwayland_surface_commit(struct wl_listener *listener, void *data) { - struct cg_xwayland_view *xwayland_view = wl_container_of(listener, xwayland_view, commit); + struct cg_xwayland_view *xwayland_view = + wl_container_of(listener, xwayland_view, commit); struct cg_view *view = &xwayland_view->view; - view_damage_part(view); + /* xwayland surface has moved */ + if(xwayland_view->xwayland_surface->x != view->lx || + xwayland_view->xwayland_surface->y != view->ly) { + struct cg_output *output; + wl_list_for_each (output, &view->server->outputs, link) { + + output_damage_surface(output, view->wlr_surface, + view->lx, view->ly, true); + } + view->lx = xwayland_view->xwayland_surface->x; + view->ly = xwayland_view->xwayland_surface->y; + wl_list_for_each (output, &view->server->outputs, link) { + + output_damage_surface(output, view->wlr_surface, + view->lx, view->ly, true); + } + } else { + view_damage_part(view); + } }

static void

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