Add fz_expand_irect function.

2 files changed, 12 insertions, 0 deletions

diff --git a/include/mupdf/fitz/geometry.h b/include/mupdf/fitz/geometry.h
index 20d352ef..180ae8da 100644
--- a/include/mupdf/fitz/geometry.h
+++ b/include/mupdf/fitz/geometry.h
@@ -561,6 +561,7 @@ fz_rect *fz_rect_from_irect(fz_rect *restrict rect, const fz_irect *restrict bbo
 	fz_expand_rect: Expand a bbox by a given amount in all directions.
 */
 fz_rect *fz_expand_rect(fz_rect *b, float expand);
+fz_irect *fz_expand_irect(fz_irect *a, int expand);
 
 /*
 	fz_include_point_in_rect: Expand a bbox to include a given point.
diff --git a/source/fitz/geometry.c b/source/fitz/geometry.c
index 688b7046..775d442a 100644
--- a/source/fitz/geometry.c
+++ b/source/fitz/geometry.c
@@ -532,6 +532,17 @@ fz_transform_rect(fz_rect *restrict r, const fz_matrix *restrict m)
 	return r;
 }
 
+fz_irect *
+fz_expand_irect(fz_irect *a, int expand)
+{
+	if (fz_is_infinite_irect(a)) return a;
+	a->x0 -= expand;
+	a->y0 -= expand;
+	a->x1 += expand;
+	a->y1 += expand;
+	return a;
+}
+
 fz_rect *
 fz_expand_rect(fz_rect *a, float expand)
 {