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-rw-r--r--include/wlr/util/region.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/wlr/util/region.h b/include/wlr/util/region.h
index 5d2b37e1..7883af97 100644
--- a/include/wlr/util/region.h
+++ b/include/wlr/util/region.h
@@ -19,4 +19,11 @@ void wlr_region_scale(pixman_region32_t *dst, pixman_region32_t *src,
void wlr_region_transform(pixman_region32_t *dst, pixman_region32_t *src,
enum wl_output_transform transform, int width, int height);
+/**
+ * Expands the region of `distance`. If `distance` is negative, it shrinks the
+ * region.
+ */
+void wlr_region_expand(pixman_region32_t *dst, pixman_region32_t *src,
+ int distance);
+
#endif