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-rw-r--r--include/wlr/util/box.h5
-rw-r--r--util/box.c12
2 files changed, 16 insertions, 1 deletions
diff --git a/include/wlr/util/box.h b/include/wlr/util/box.h
index 84df50a6..e866b1df 100644
--- a/include/wlr/util/box.h
+++ b/include/wlr/util/box.h
@@ -41,6 +41,11 @@ struct wlr_fbox {
};
/**
+ * Functions below accept NULL where a box is expected, which is treated
+ * the same as an empty box.
+ */
+
+/**
* Finds the closest point within the box bounds.
*
* Returns NAN if the box is empty.
diff --git a/util/box.c b/util/box.c
index 20107281..46c8c5d6 100644
--- a/util/box.c
+++ b/util/box.c
@@ -8,7 +8,7 @@
void wlr_box_closest_point(const struct wlr_box *box, double x, double y,
double *dest_x, double *dest_y) {
// if box is empty, then it contains no points, so no closest point either
- if (box->width <= 0 || box->height <= 0) {
+ if (wlr_box_empty(box)) {
*dest_x = NAN;
*dest_y = NAN;
return;
@@ -71,6 +71,11 @@ bool wlr_box_contains_point(const struct wlr_box *box, double x, double y) {
void wlr_box_transform(struct wlr_box *dest, const struct wlr_box *box,
enum wl_output_transform transform, int width, int height) {
+ if (wlr_box_empty(box)) {
+ *dest = (struct wlr_box){0};
+ return;
+ }
+
struct wlr_box src = *box;
if (transform % 2 == 0) {
@@ -123,6 +128,11 @@ bool wlr_fbox_empty(const struct wlr_fbox *box) {
void wlr_fbox_transform(struct wlr_fbox *dest, const struct wlr_fbox *box,
enum wl_output_transform transform, double width, double height) {
+ if (wlr_fbox_empty(box)) {
+ *dest = (struct wlr_fbox){0};
+ return;
+ }
+
struct wlr_fbox src = *box;
if (transform % 2 == 0) {