X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=libs%2Fcanvas%2Fpoly_line.cc;h=3150907db6f17aec5fec9f16e362444bac54ff99;hb=289078f7f8224ec72fb23d81b0e2b53a09611cfa;hp=bade7d855e912c429125ac5c3a70bdda6ec39004;hpb=590882f3c8e063528452d71daffb36d3151da05e;p=ardour.git

diff --git a/libs/canvas/poly_line.cc b/libs/canvas/poly_line.cc
index bade7d855e..3150907db6 100644
--- a/libs/canvas/poly_line.cc
+++ b/libs/canvas/poly_line.cc
@@ -31,8 +31,8 @@ PolyLine::PolyLine (Canvas* c)
 {
 }
 
-PolyLine::PolyLine (Group* g)
-	: PolyItem (g)
+PolyLine::PolyLine (Item* parent)
+	: PolyItem (parent)
 	, _threshold (1.0)
 {
 }
@@ -47,6 +47,30 @@ PolyLine::render (Rect const & area, Cairo::RefPtr<Cairo::Context> context) cons
 	}
 }
 
+void
+PolyLine::set_steps (Points const & points, bool stepped)
+{
+	if (!stepped) {
+		PolyItem::set(points);
+		return;
+	}
+
+	Points copy;
+	for (Points::const_iterator p = points.begin(); p != points.end();) {
+		Points::const_iterator next = p;
+		++next;
+
+		copy.push_back(*p);
+		if (next != points.end() && next->x != p->x) {
+			copy.push_back(Duple(next->x, p->y));
+		}
+
+		p = next;
+	}
+
+	PolyItem::set(copy);
+}
+
 bool
 PolyLine::covers (Duple const & point) const
 {