Class for graphical representation of connections in the node framework. More...

#include <ConnectionGraphicsItem.h>

Inheritance diagram for Frapper::ConnectionGraphicsItem:

Collaboration diagram for Frapper::ConnectionGraphicsItem:

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Signals
void	nodeGraphicsItemSelected (const QString &name)

void	destroyed (Connection *connection)
	Signal that is emitted when the connection item is being destroyed.

void	destroyed (ConnectionGraphicsItem *connectionItem)
	Signal that is emitted when the connection item is being destroyed.

Public Member Functions
	ConnectionGraphicsItem (const QString &name, const QColor &color, const QPointF &startPoint, const QPointF &endPoint)
	Constructor of the ConnectionGraphicsItem class.

	~ConnectionGraphicsItem ()
	Destructor of the ConnectionGraphicsItem class.

virtual QRectF	boundingRect () const
	Returns the bounding rectangle of the graphics item.

virtual QPainterPath	shape () const
	Returns the shape path of an item.

void	setEnabled (bool enabled)
	Enables or disables the graphics item.

virtual void	paint (QPainter painter, const QStyleOptionGraphicsItem option, QWidget *widget=0)
	Paints the graphics item into a graphics view.

void	updatePath ()
	Updates the path end points according to the positions of start and end nodes.

Connection *	getConnection () const
	Returns the Connection object that the connection graphics item represents.

void	setConnection (Connection *connection)
	Sets the Connection object that the connection graphics item represents.

NodeGraphicsItem *	getStartNodeItem ()
	Gets the startnode of the connection.

void	setStartNodeItem (NodeGraphicsItem *item)
	Sets the startnode of the connection.

NodeGraphicsItem *	getEndNodeItem () const
	Gets the endnode of the connection.

void	setEndNodeItem (NodeGraphicsItem *item)
	Sets the endnode of the connection.

QPointF	getStartPoint () const
	Gets the start point of the connection.

void	setStartPoint (const QPointF &startPos)
	Sets the start point of the connection.

QPointF	getEndPoint () const
	Gets the end point of the connection.

void	setEndPoint (const QPointF &endPos)
	Sets the end point of the connection.

void	updatePosition (const QPointF &scenePosition)
	Updates the position of an end point for a connection that is currently being created.

Static Public Member Functions
static ConnectionGraphicsItem *	getTempItem ()
	Returns the temporary Connection object that is used when creating a connection between nodes.

static void	setTempItem (ConnectionGraphicsItem *connection)
	Sets the temporary Connection object that is used when creating a connection between nodes to the given object.

static bool	isConnectionCreated ()
	Returns whether a connection between nodes is currently being created.

Protected Member Functions
void	hoverEnterEvent (QGraphicsSceneHoverEvent *event)
	Process hover enter events.

void	hoverLeaveEvent (QGraphicsSceneHoverEvent *event)
	Process hover leave events.

Private Member Functions
void	setTemp (bool temp)

Private Attributes
QString	m_name
	The name of the connection.

QColor	m_color
	The color to use for painting the item.

QPainterPath	m_mainPath
	The path to use for painting the curved path.

QPainterPath	m_shadowPath
	The path to use for painting the shadow of the curved path.

QPolygonF	m_arrowHeadPolygon
	The arrow head shape to use for painting the item.

QPainterPath	m_shapePath
	The path to return when the shape of the item is requested.

QPointF	m_startPoint
	The start point of the path.

QPointF	m_endPoint
	The end point of the path.

bool	m_selfInitiated
	Flag that states whether a current update has been initiated by this object itself.

Connection *	m_connection
	Pointer to Connection. (Deprecated.)

QMap< QString, Connection * >	m_connections
	List of Connections.

NodeGraphicsItem *	m_startNodeItem
	Pointer to NodeGraphicsItem.

NodeGraphicsItem *	m_endNodeItem
	Pointer to NodeGraphicsItem.

bool	m_temp
	Flag for temporary connection item.

bool	m_hovered
	Flag for mouse hovers over item.

Static Private Attributes
static ConnectionGraphicsItem *	s_tempItem = 0
	Temporary Connection object that is used when creating a connection between nodes.

Detailed Description

Class for graphical representation of connections in the node framework.

Inheritance Diagram

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Constructor & Destructor Documentation

Frapper::ConnectionGraphicsItem::ConnectionGraphicsItem	(	const QString &	name,
		const QColor &	color,
		const QPointF &	startPoint,
		const QPointF &	endPoint
	)

Constructor of the ConnectionGraphicsItem class.

Constructors and Destructors.

Parameters

name	The name of the item.
color	The color to use for painting the item.
startPoint	The point where the connection line begins.
endPoint	The point where the connection line ends.

Constructor of the ConnectionGraphicsItem class.

Parameters

name	The name of the item.
color	The color to use for painting the item.
startPoint	The point where the connection line begins.
endPoint	The point where the connection line ends.

Frapper::ConnectionGraphicsItem::~ConnectionGraphicsItem ( )

Destructor of the ConnectionGraphicsItem class.

Member Function Documentation

ConnectionGraphicsItem * Frapper::ConnectionGraphicsItem::getTempItem ( )

static

Returns the temporary Connection object that is used when creating a connection between nodes.

Public Static Functions.

Returns: The temporary Connection object that is used when creating a connection between nodes.

Returns the temporary Connection object that is used when creating a connection between nodes.

Returns: The temporary Connection object that is used when creating a connection between nodes.

void Frapper::ConnectionGraphicsItem::setTempItem ( ConnectionGraphicsItem * item )

static

Sets the temporary Connection object that is used when creating a connection between nodes to the given object.

Parameters

connection	The temporary Connection object that is used when creating a connection between nodes.
item	The temporary Connection object that is used when creating a connection between nodes.

bool Frapper::ConnectionGraphicsItem::isConnectionCreated ( )

static

Returns whether a connection between nodes is currently being created.

Returns: True if a connection between nodes is currently being created, otherwise False.

QRectF Frapper::ConnectionGraphicsItem::boundingRect ( ) const

virtual

Returns the bounding rectangle of the graphics item.

Public Slots.

Returns: The bounding rectangle of the graphics item.

Public Functions Returns the bounding rectangle of the graphics item.

Returns: The bounding rectangle of the graphics item.

QPainterPath Frapper::ConnectionGraphicsItem::shape ( ) const

virtual

Returns the shape path of an item.

Returns the shape of the item as QPainterPath.

Parameters

The	shape of the item as QPainterPath.

void Frapper::ConnectionGraphicsItem::setEnabled ( bool enabled )

Enables or disables the graphics item.

Parameters

enabled The new enabled state for the item.

void Frapper::ConnectionGraphicsItem::paint	(	QPainter *	painter,
		const QStyleOptionGraphicsItem *	option,
		QWidget *	widget = `0`
	)

virtual

Paints the graphics item into a graphics view.

Parameters

painter	The object to use for painting.
option	Style options for painting the graphics item.
widget	The widget into which to paint the graphics item.

void Frapper::ConnectionGraphicsItem::updatePath ( )

Updates the path end points according to the positions of start and end nodes.

Connection * Frapper::ConnectionGraphicsItem::getConnection ( ) const

Returns the Connection object that the connection graphics item represents.

Returns: The Connection object that the connection graphics item represents.

void Frapper::ConnectionGraphicsItem::setConnection ( Connection * connection )

Sets the Connection object that the connection graphics item represents.

Parameters

connection The Connection object that the connection graphics item represents.

NodeGraphicsItem * Frapper::ConnectionGraphicsItem::getStartNodeItem ( )

Gets the startnode of the connection.

void Frapper::ConnectionGraphicsItem::setStartNodeItem ( NodeGraphicsItem * item )

Sets the startnode of the connection.

NodeGraphicsItem * Frapper::ConnectionGraphicsItem::getEndNodeItem ( ) const

Gets the endnode of the connection.

void Frapper::ConnectionGraphicsItem::setEndNodeItem ( NodeGraphicsItem * item )

Sets the endnode of the connection.

QPointF Frapper::ConnectionGraphicsItem::getStartPoint ( ) const

Gets the start point of the connection.

Gets the startpoint of the connection.

void Frapper::ConnectionGraphicsItem::setStartPoint ( const QPointF & startPos )

Sets the start point of the connection.

QPointF Frapper::ConnectionGraphicsItem::getEndPoint ( ) const

Gets the end point of the connection.

Gets the endpoint of the connection.

void Frapper::ConnectionGraphicsItem::setEndPoint ( const QPointF & endPos )

Sets the end point of the connection.

void Frapper::ConnectionGraphicsItem::updatePosition ( const QPointF & scenePosition )

Updates the position of an end point for a connection that is currently being created.

Parameters

scenePosition The position of the mouse pointer over the graphics view in scene coordinates.

void Frapper::ConnectionGraphicsItem::nodeGraphicsItemSelected ( const QString & name )

signal

void Frapper::ConnectionGraphicsItem::destroyed ( Connection * connection )

signal

Signal that is emitted when the connection item is being destroyed.

void Frapper::ConnectionGraphicsItem::destroyed ( ConnectionGraphicsItem * connectionItem )

signal

Signal that is emitted when the connection item is being destroyed.

void Frapper::ConnectionGraphicsItem::hoverEnterEvent ( QGraphicsSceneHoverEvent * event )

protected

Process hover enter events.

Protected Functions.

void Frapper::ConnectionGraphicsItem::hoverLeaveEvent ( QGraphicsSceneHoverEvent * event )

protected

Process hover leave events.

void Frapper::ConnectionGraphicsItem::setTemp ( bool temp )

private

Sets the temp flag of the connection.

Private Functions Sets the temp flag.

Member Data Documentation

ConnectionGraphicsItem * Frapper::ConnectionGraphicsItem::s_tempItem = 0

staticprivate

Temporary Connection object that is used when creating a connection between nodes.

Private Static Data.

Temporary Connection object that is created when a connection is set up.

QString Frapper::ConnectionGraphicsItem::m_name

private

The name of the connection.

QColor Frapper::ConnectionGraphicsItem::m_color

private

The color to use for painting the item.

QPainterPath Frapper::ConnectionGraphicsItem::m_mainPath

private

The path to use for painting the curved path.

QPainterPath Frapper::ConnectionGraphicsItem::m_shadowPath

private

The path to use for painting the shadow of the curved path.

QPolygonF Frapper::ConnectionGraphicsItem::m_arrowHeadPolygon

private

The arrow head shape to use for painting the item.

QPainterPath Frapper::ConnectionGraphicsItem::m_shapePath

private

The path to return when the shape of the item is requested.

QPointF Frapper::ConnectionGraphicsItem::m_startPoint

private

The start point of the path.

QPointF Frapper::ConnectionGraphicsItem::m_endPoint

private

The end point of the path.

bool Frapper::ConnectionGraphicsItem::m_selfInitiated

private

Flag that states whether a current update has been initiated by this object itself.

Connection* Frapper::ConnectionGraphicsItem::m_connection

private

Pointer to Connection. (Deprecated.)

QMap<QString, Connection *> Frapper::ConnectionGraphicsItem::m_connections

private

List of Connections.

NodeGraphicsItem* Frapper::ConnectionGraphicsItem::m_startNodeItem

private

Pointer to NodeGraphicsItem.

NodeGraphicsItem* Frapper::ConnectionGraphicsItem::m_endNodeItem

private

Pointer to NodeGraphicsItem.

bool Frapper::ConnectionGraphicsItem::m_temp

private

Flag for temporary connection item.

bool Frapper::ConnectionGraphicsItem::m_hovered

private

Flag for mouse hovers over item.

The documentation for this class was generated from the following files:

Signals

Public Member Functions

Static Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Static Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation