86 lines
2.9 KiB
C
86 lines
2.9 KiB
C
|
/****************************************************************************
|
||
|
|
**
|
||
|
|
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
|
||
|
|
** All rights reserved.
|
||
|
|
** Contact: Nokia Corporation (qt-info@nokia.com)
|
||
|
|
**
|
||
|
|
** This file is part of the examples 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."
|
||
|
|
** $QT_END_LICENSE$
|
||
|
|
**
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
#ifndef NODE_H
|
||
|
|
#define NODE_H
|
||
|
|
|
||
|
|
#include <QGraphicsItem>
|
||
|
|
#include <QList>
|
||
|
|
|
||
|
|
class Edge;
|
||
|
|
class GraphWidget;
|
||
|
|
QT_BEGIN_NAMESPACE
|
||
|
|
class QGraphicsSceneMouseEvent;
|
||
|
|
QT_END_NAMESPACE
|
||
|
|
|
||
|
|
//! [0]
|
||
|
|
class Node : public QGraphicsItem
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
Node(GraphWidget *graphWidget);
|
||
|
|
|
||
|
|
void addEdge(Edge *edge);
|
||
|
|
QList<Edge *> edges() const;
|
||
|
|
|
||
|
|
enum { Type = UserType + 1 };
|
||
|
|
int type() const { return Type; }
|
||
|
|
|
||
|
|
void calculateForces();
|
||
|
|
bool advance();
|
||
|
|
|
||
|
|
QRectF boundingRect() const;
|
||
|
|
QPainterPath shape() const;
|
||
|
|
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
|
||
|
|
|
||
|
|
protected:
|
||
|
|
QVariant itemChange(GraphicsItemChange change, const QVariant &value);
|
||
|
|
|
||
|
|
void mousePressEvent(QGraphicsSceneMouseEvent *event);
|
||
|
|
void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
|
||
|
|
|
||
|
|
private:
|
||
|
|
QList<Edge *> edgeList;
|
||
|
|
QPointF newPos;
|
||
|
|
GraphWidget *graph;
|
||
|
|
};
|
||
|
|
//! [0]
|
||
|
|
|
||
|
|
#endif
|