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qanNode.h
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qanNode.h
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/*
Copyright (c) 2008-2018, Benoit AUTHEMAN All rights reserved.
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 the author or Destrat.io 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 AUTHOR 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.
*/
//-----------------------------------------------------------------------------
// This file is a part of the QuickQanava software library.
//
// \file qanNode.h
// \author benoit@destrat.io
// \date 2004 February 15
//-----------------------------------------------------------------------------
#ifndef qanNode_h
#define qanNode_h
// Qt headers
#include <QQuickItem>
#include <QPointF>
#include <QPolygonF>
// QuickQanava headers
#include "./qanGraphConfig.h"
#include "./qanEdge.h"
#include "./qanStyle.h"
#include "./qanBehaviour.h"
//#include "./qanNodeItem.h"
namespace qan { // ::qan
class NodeBehaviour;
class Graph;
class Group;
class NodeItem;
class PortItem;
/*! \brief Base class for modelling nodes with attributes and an in/out edges list in a qan::Graph graph.
*
* \note If your application does not need drag'n'drop support (ie group insertion via dra'n'drop or VisualConnector are not used nor necessary), consider disabling
* drag'n'drop support by setting the \c acceptsDrops and \c droppable properties to false, it could improve performances significantly.
*
* \nosubgrouping
*/
class Node : public gtpo::GenNode< qan::GraphConfig >
{
/*! \name Node Object Management *///--------------------------------------
//@{
Q_OBJECT
public:
//! Node constructor.
explicit Node(QObject* parent=nullptr);
virtual ~Node();
Node( const Node& ) = delete;
public:
Q_PROPERTY( qan::Graph* graph READ getGraph CONSTANT FINAL )
//! Shortcut to gtpo::GenNode<>::getGraph().
qan::Graph* getGraph() noexcept;
//! \copydoc getGraph()
const qan::Graph* getGraph() const noexcept;
public:
/*!
* \note only label is taken into account for equality comparison.
*/
bool operator==( const qan::Node& right ) const;
public:
Q_PROPERTY( qan::NodeItem* item READ getItem CONSTANT )
qan::NodeItem* getItem() noexcept;
const qan::NodeItem* getItem() const noexcept;
void setItem(qan::NodeItem* nodeItem) noexcept;
protected:
QPointer<qan::NodeItem> _item;
//@}
//-------------------------------------------------------------------------
/*! \name Node Static Factories *///---------------------------------------
//@{
public:
/*! \brief Return the default delegate QML component that should be used to generate node \c item.
*
* \arg engine QML engine used to create delegate component.
* \return Default delegate component or nullptr (when nullptr is returned, QuickQanava default to Qan.Node component).
*/
static QQmlComponent* delegate(QQmlEngine& engine) noexcept;
/*! \brief Return the default style that should be used with qan::Node.
*
* \return Default style or nullptr (when nullptr is returned, qan::StyleManager default node style will be used).
*/
static qan::NodeStyle* style() noexcept;
//@}
//-------------------------------------------------------------------------
/*! \name Topology Interface *///------------------------------------------
//@{
public:
//! Read-only abstract item model of this node in nodes.
Q_PROPERTY( QAbstractItemModel* inNodes READ qmlGetInNodes CONSTANT FINAL )
QAbstractItemModel* qmlGetInNodes( ) const { return const_cast<QAbstractItemModel*>( static_cast< const QAbstractItemModel* >( getInNodes().model() ) ); }
public:
//! Read-only abstract item model of this node out nodes.
Q_PROPERTY( QAbstractItemModel* outNodes READ qmlGetOutNodes CONSTANT FINAL )
QAbstractItemModel* qmlGetOutNodes() const { return const_cast< QAbstractItemModel* >( qobject_cast< const QAbstractItemModel* >( getOutNodes().model() ) ); }
public:
//! Read-only abstract item model of this node out nodes.
Q_PROPERTY( QAbstractItemModel* outEdges READ qmlGetOutEdges CONSTANT FINAL )
QAbstractItemModel* qmlGetOutEdges() const { return const_cast< QAbstractItemModel* >( qobject_cast< const QAbstractItemModel* >( gtpo::GenNode< qan::GraphConfig >::getOutEdges().model() ) ); }
//@}
//-------------------------------------------------------------------------
/*! \name Behaviours Management *///---------------------------------------
//@{
public:
virtual void installBehaviour( std::unique_ptr<qan::NodeBehaviour> behaviour );
//@}
//-------------------------------------------------------------------------
/*! \name Appearance Management *///---------------------------------------
//@{
public:
Q_PROPERTY( QString label READ getLabel WRITE setLabel NOTIFY labelChanged FINAL )
void setLabel( const QString& label ) noexcept;
QString getLabel() const noexcept { return _label; }
private:
QString _label{ QStringLiteral("") };
signals:
void labelChanged( );
//@}
//-------------------------------------------------------------------------
/*! \name Node Group Management *///---------------------------------------
//@{
public:
Q_PROPERTY( qan::Group* group READ qmlGetGroup FINAL )
protected:
inline qan::Group* qmlGetGroup() noexcept { return getGroup().lock().get(); }
//@}
//-------------------------------------------------------------------------
};
} // ::qan
QML_DECLARE_TYPE( qan::Node )
#endif // qanNode_h