/******************************************************************************** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).** All rights reserved.** Contact: Nokia Corporation (qt-info@nokia.com)**** This file is part of the QtCore module of the Qt Toolkit.**** $QT_BEGIN_LICENSE:BSD$** You may use this file under the terms of the BSD license as follows:**** "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."** $QT_END_LICENSE$******************************************************************************/#include "node.h"#include "stickman.h"#include <QRectF>#include <QPainter>#include <QGraphicsSceneMouseEvent>Node::Node(const QPointF &pos, QGraphicsItem *parent) : QGraphicsObject(parent), m_dragging(false){ setPos(pos); setFlag(QGraphicsItem::ItemSendsGeometryChanges);}Node::~Node(){}QRectF Node::boundingRect() const{ return QRectF(-6.0, -6.0, 12.0, 12.0);}void Node::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *){ painter->setPen(Qt::white); painter->drawEllipse(QPointF(0.0, 0.0), 5.0, 5.0);}QVariant Node::itemChange(GraphicsItemChange change, const QVariant &value){ if (change == QGraphicsItem::ItemPositionChange) emit positionChanged(); return QGraphicsObject::itemChange(change, value);}void Node::mousePressEvent(QGraphicsSceneMouseEvent *){ m_dragging = true;}void Node::mouseMoveEvent(QGraphicsSceneMouseEvent *event){ if (m_dragging) setPos(mapToParent(event->pos())); }void Node::mouseReleaseEvent(QGraphicsSceneMouseEvent *){ m_dragging = false;}