menu.c: Handle out of screen submenus

Fixes #276

diff --git a/src/menu/menu.c b/src/menu/menu.c
index 2f34d4e39a1e2841459e1bb2772ba0ba06c8002e..d3e54cebc229c053aea1ed029b8cf0c916fcbad9 100644 (file)
--- a/src/menu/menu.c
+++ b/src/menu/menu.c
@@ -357,6 +357,12 @@ menu_configure(struct menu *menu, int lx, int ly, enum menu_align align)
        double oy = ly;
        struct wlr_output *wlr_output = wlr_output_layout_output_at(
                menu->server->output_layout, lx, ly);
+       if (!wlr_output) {
+               wlr_log(WLR_ERROR,
+                       "Failed to position menu %s (%s) and its submenus: "
+                       "Not enough screen space", menu->id, menu->label);
+               return;
+       }
        wlr_output_layout_output_coords(menu->server->output_layout,
                wlr_output, &ox, &oy);
        struct wlr_box usable = output_usable_area_from_cursor_coords(menu->server);