--- a/examples/graphicsview/elasticnodes/edge.cpp	Wed Jun 23 19:07:03 2010 +0300
+++ b/examples/graphicsview/elasticnodes/edge.cpp	Tue Jul 06 15:10:48 2010 +0300
@@ -6,35 +6,34 @@
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
-** $QT_BEGIN_LICENSE:LGPL$
-** No Commercial Usage
-** This file contains pre-release code and may not be distributed.
-** You may use this file in accordance with the terms and conditions
-** contained in the Technology Preview License Agreement accompanying
-** this package.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 2.1 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL included in the
-** packaging of this file.  Please review the following information to
-** ensure the GNU Lesser General Public License version 2.1 requirements
-** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
 **
-** In addition, as a special exception, Nokia gives you certain additional
-** rights.  These rights are described in the Nokia Qt LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** If you have questions regarding the use of this file, please contact
-** Nokia at qt-info@nokia.com.
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+**     the names of its contributors may be used to endorse or promote
+**     products derived from this software without specific prior written
+**     permission.
 **
-**
-**
-**
-**
-**
-**
-**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/
@@ -49,6 +48,7 @@
 static const double Pi = 3.14159265358979323846264338327950288419717;
 static double TwoPi = 2.0 * Pi;
 
+//! [0]
 Edge::Edge(Node *sourceNode, Node *destNode)
     : arrowSize(10)
 {
@@ -59,33 +59,21 @@
     dest->addEdge(this);
     adjust();
 }
+//! [0]
 
-Edge::~Edge()
-{
-}
-
+//! [1]
 Node *Edge::sourceNode() const
 {
     return source;
 }
 
-void Edge::setSourceNode(Node *node)
-{
-    source = node;
-    adjust();
-}
-
 Node *Edge::destNode() const
 {
     return dest;
 }
+//! [1]
 
-void Edge::setDestNode(Node *node)
-{
-    dest = node;
-    adjust();
-}
-
+//! [2]
 void Edge::adjust()
 {
     if (!source || !dest)
@@ -104,7 +92,9 @@
         sourcePoint = destPoint = line.p1();
     }
 }
+//! [2]
 
+//! [3]
 QRectF Edge::boundingRect() const
 {
     if (!source || !dest)
@@ -118,7 +108,9 @@
         .normalized()
         .adjusted(-extra, -extra, extra, extra);
 }
+//! [3]
 
+//! [4]
 void Edge::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
 {
     if (!source || !dest)
@@ -127,11 +119,15 @@
     QLineF line(sourcePoint, destPoint);
     if (qFuzzyCompare(line.length(), qreal(0.)))
         return;
+//! [4]
 
+//! [5]
     // Draw the line itself
     painter->setPen(QPen(Qt::black, 1, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
     painter->drawLine(line);
+//! [5]
 
+//! [6]
     // Draw the arrows
     double angle = ::acos(line.dx() / line.length());
     if (line.dy() >= 0)
@@ -150,3 +146,4 @@
     painter->drawPolygon(QPolygonF() << line.p1() << sourceArrowP1 << sourceArrowP2);
     painter->drawPolygon(QPolygonF() << line.p2() << destArrowP1 << destArrowP2);        
 }
+//! [6]