X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=pv%2Fview%2Fruler.h;h=08a9c0e1fdf0128827bbc4c4c016fccd60d8fb2d;hb=bb3030b34e44733036acdfe5b4d4ec0705146831;hp=cee76c685c5a5e3d40dbf8a5a78caa6e6b97a9a9;hpb=84a0d458a4b04141dd45af6dec44d36782ee163e;p=pulseview.git

diff --git a/pv/view/ruler.h b/pv/view/ruler.h
index cee76c68..08a9c0e1 100644
--- a/pv/view/ruler.h
+++ b/pv/view/ruler.h
@@ -42,6 +42,18 @@ private:
 public:
 	Ruler(View &parent);
 
+	/**
+	 * Find a tick spacing and number formatting that does not cause
+	 * the values to collide.
+	 * @param p A QPainter used to determine the needed space for the values.
+	 * @param scale A pv::view::View's scale.
+	 * @param offset A pv::view::View's offset.
+	 *
+	 * @return The tick period to use in 'first' and the prefix in 'second'.
+	 */
+	static std::pair<double, unsigned int> calculate_tick_spacing(
+		QPainter& p, double scale, double offset);
+
 public:
 	QSize sizeHint() const;