src/deco.c: add some defence

diff --git a/src/deco.c b/src/deco.c
index 1acb117b646e463a378e77ed77046f7b432dc13c..c89c11f80b1d6129257a59b11514e3aa9ea43f50 100644 (file)
--- a/src/deco.c
+++ b/src/deco.c
@@ -7,6 +7,8 @@
 #include "labwc.h"
 #include "theme/theme.h"
 #include "config/rcxml.h"
+#include "common/bug-on.h"
+#include "common/log.h"
 
 #define BORDER_WIDTH (1)
 
@@ -27,8 +29,17 @@ struct wlr_box deco_box(struct view *view, enum deco_part deco_part)
        int margin;
 
        struct wlr_box box = { .x = 0, .y = 0, .width = 0, .height = 0 };
+       BUG_ON(!view);
+       BUG_ON(!view->surface);
        if (!view || !view->surface)
                return box;
+       BUG_ON(!view->been_mapped);
+       BUG_ON(!view->show_server_side_deco);
+       if ((view->surface->current.width < 1) ||
+           (view->surface->current.height < 1)) {
+               warn("view (%p) has no width/height", view);
+               return;
+       }
        switch (deco_part) {
        case LAB_DECO_BUTTON_CLOSE:
                wlr_texture_get_size(theme.xbm_close, &box.width, &box.height);