diff --git a/qad_blockview/blockitem.h b/qad_blockview/blockitem.h
index 07a0853..e0b297a 100644
--- a/qad_blockview/blockitem.h
+++ b/qad_blockview/blockitem.h
@@ -153,6 +153,8 @@ public:
 	QColor color() const {return col;}
 	void setColor(QColor c) {col = c; _resize(size());}
 	QSizeF size() const {return g_main.rect().size();}
+	qreal width() const {return size().width();}
+	qreal height() const {return size().height();}
 	void setSize(QSizeF s) {_resize(s);}
 	void setSize(qreal w, qreal h) {setSize(QSizeF(w, h));}
 	void setWidth(qreal w) {setSize(QSizeF(w, size().height()));}
diff --git a/qad_blockview/blockview.cpp b/qad_blockview/blockview.cpp
index 38e6ea7..7b436b7 100644
--- a/qad_blockview/blockview.cpp
+++ b/qad_blockview/blockview.cpp
@@ -5,6 +5,7 @@
 #include <QApplication>
 #include <QAction>
 #include <QShortcut>
+#include <QVector2D>
 
 
 BlockView::BlockView(QWidget * parent): QGraphicsView(parent), tmp_bus(true) {
@@ -280,7 +281,7 @@ bool BlockView::eventFilter(QObject * o, QEvent * e) {
 			if (mm_ci) {
 				if (mm_ci->data(1004) == "pin" && m_connect) {
 					if (qgraphicsitem_cast<BlockItemPin*>(mm_ci)->state() == BlockItemPin::Hover) {
-						trace_from = mm_ci->mapToScene(QPointF());
+						trace_from = mm_ci->scenePos();
 						qgraphicsitem_cast<BlockItemPin*>(mm_ci)->clearStateStack();
 						tmp_bus.setBusType(qgraphicsitem_cast<BlockItemPin*>(mm_ci)->busType());
 						tmp_bus.setEndpointsNumber(3);
@@ -764,7 +765,7 @@ QList<BlockBusItem * > BlockView::wrongConnectedBuses() const {
 		QVector<BlockItemPin * > pins = b->pins();
 		foreach (BlockItemPin * p, pins)
 			if (p->state() == BlockItemPin::Reject) {
-				QPointF pp = p->mapToScene(QPointF());
+				QPointF pp = p->scenePos();
 				foreach (BlockBusItem * s, sl)
 					if (s->pol.contains(pp))
 						if (!ret.contains(s))
@@ -807,6 +808,71 @@ QList<BlockBusItem * > BlockView::connectionBuses(BlockItem * b0, BlockItem * b1
 }
 
 
+bool BlockView::connectPins(BlockItemPin * p0, BlockItemPin * p1) {
+	if (!p0 || !p1) return false;
+	if (p0->busType() != p1->busType()) return false;
+	QList<BlockBusItem * > bl0 = p0->connectedBuses(), bl1 = p1->connectedBuses();
+	if (!(bl0.toSet() & bl1.toSet()).isEmpty()) return true;
+	BlockBusItem * nb = new BlockBusItem();
+	nb->setBusType(p0->busType());
+	//nb->setEndpointsNumber(3);
+	loadBus(nb);
+	if (!bl0.isEmpty() && !bl1.isEmpty()) { // connect two existing buses
+	} else {
+		if ((bl0.isEmpty() && !bl1.isEmpty()) || (bl1.isEmpty() && !bl0.isEmpty())) { // connect empty pin to existing bus
+			BlockItemPin * ep = 0;
+			BlockBusItem * eb = 0;
+			if (bl0.isEmpty()) {ep = p0; eb = bl1[0];}
+			else {ep = p1; eb = bl0[0];}
+			double md = -1; int mi = -1;
+			QPointF sp = ep->scenePos();
+			if (eb->pol.size() == 2) {
+				eb->selSegment = 0;
+				eb->addPoint((eb->pol[0] + eb->pol[1]) / 2.);
+				eb->selPoint = -1;
+				mi = 2;
+			} else {
+				for (int i = 0; i < eb->pol.size(); ++i) {
+					if (eb->ends.contains(i)) continue;
+					double cd = QVector2D(sp - eb->pol[i]).lengthSquared();
+					if (md < 0 || md > cd) {
+						md = cd;
+						mi = i;
+					}
+				}
+			}
+			if (mi < 0) {
+				return false;
+			}
+			trace(ep->scenePos(), eb->pol[mi], nb);
+			if (nb->pol.size() < 2) {
+				delete nb;
+				return false;
+			}
+			nb->pol.pop_back();
+			int lp = eb->pol.size();
+			eb->pol << nb->pol;
+			for (int i = 0; i < nb->pol.size() - 1; ++i)
+				eb->segments << QPair<int, int>(lp + i, lp + i + 1);
+			eb->segments << QPair<int, int>(mi, lp + nb->pol.size() - 1);
+			eb->updateGeometry();
+			delete nb;
+		} else { // connect two empty pins
+			trace(p0->scenePos(), p1->scenePos(), nb);
+			if (nb->pol.isEmpty()) {
+				delete nb;
+				return false;
+			}
+			addItem(nb);
+		}
+	}
+	reconnectAll();
+	emit actionEvent(BlockItemBase::BusAdd, QList<QGraphicsItem*>() << nb);
+	emit connectionsChanged();
+	return true;
+}
+
+
 void BlockView::restoreSelState() {
 	foreach (QGraphicsItem * i, sel_items) {
 		i->setPos(i->data(1001).toPointF());
@@ -874,8 +940,8 @@ void BlockView::trace(QPointF scene_pos_from, QPointF scene_pos_to, BlockBusItem
 			wavetrace.fill(QRect(ir.topLeft() / grid_step + dp, ir.bottomRight() / grid_step + dp), BlockViewWavetrace::Blocked);
 			QVector<BlockItemPin * > pins = qgraphicsitem_cast<BlockItem * >(i)->pins();
 			foreach (BlockItemPin * p, pins) {
-				if (p->busType() == tmp_bus.busType())
-					wavetrace.fill(quantize(p->mapToScene(QPointF()), grid_step).toPoint() / grid_step + dp, BlockViewWavetrace::Empty);
+				if (p->busType() == bus->busType())
+					wavetrace.fill(quantize(p->scenePos(), grid_step).toPoint() / grid_step + dp, BlockViewWavetrace::Empty);
 			}
 		}
 	if (m_trace_with_buses) {
@@ -963,7 +1029,7 @@ void BlockView::matchBus() {
 	if (m_pin_mc) {
 		foreach (BlockItem * b_, blockl)
 			foreach (BlockItemPin * p_, b_->pins())
-				if (p_->mapToScene(QPointF()) == point) {
+				if (p_->scenePos() == point) {
 					
 					return;
 				}
@@ -1257,7 +1323,7 @@ void BlockView::reconnectAll() {
 			QPointF cp = b->pol[conns[c]];
 			for (int j = 0; j < pins.size(); ++j) {
 				if (!pins[j]->isVisible()) continue;
-				QPointF pp = pins[j]->mapToScene(QPointF());
+				QPointF pp = pins[j]->scenePos();
 				if (cp == pp) {
 					//qDebug() << "found";
 					if (b->busType() == pins[j]->busType()) {
diff --git a/qad_blockview/blockview.h b/qad_blockview/blockview.h
index 8c7ef82..7bc871f 100644
--- a/qad_blockview/blockview.h
+++ b/qad_blockview/blockview.h
@@ -68,6 +68,7 @@ public:
 	QList<QGraphicsItem * > decors() const;
 	BlockBusItem * connectionBus(BlockItem * b0, BlockItem * b1) const;
 	QList<BlockBusItem * > connectionBuses(BlockItem * b0, BlockItem * b1) const;
+	bool connectPins(BlockItemPin * p0, BlockItemPin * p1);
 
 protected:
 	void _init();
diff --git a/qad_blockview/blockviewwavetrace.cpp b/qad_blockview/blockviewwavetrace.cpp
index 0052e44..c070555 100644
--- a/qad_blockview/blockviewwavetrace.cpp
+++ b/qad_blockview/blockviewwavetrace.cpp
@@ -94,7 +94,7 @@ bool BlockViewWavetrace::trace(const QPoint & start, const QPoint & finish) {
 			}
 		}
 		cpnts = npnts;
-		//cout << cl << ": " << cpnts.size() << endl;
+		//qDebug() << cl << ": " << cpnts.size();
 	}
 	return false;
 }