The ItemOutput class represents an output that belongs to an item. More...

#include <item_output.h>

Inheritance diagram for ItemOutput:

Collaboration diagram for ItemOutput:

Signals
void	inputDisconnected ()
	This signal is emitted whenever an input this output is connected to is disconnected. More...

void	inputConnected ()
	This signal is emitted whenever a new input is connected to this output. More...

void	dataChanged ()
	This signal is emitted whenever the data provided by this output has changed. More...

Signals inherited from AbstractItemInputOutputBase
void	positionChanged ()
	This signal is emitted whenever this objects local or scene position has changed. More...

Public Member Functions
	ItemOutput (AbstractItem *owner, int transportType, QString const &description, QRectF const &shape={0, 0, 0, 0})
	Constructs an ItemOutput. More...

virtual bool	isConnected () const

QList< ItemInput * >	inputs () const

QObject *	data () const

virtual QPointF	scenePosition () const
	Returns the scene position of this object. More...

void	disconnectInput (ItemInput *input)
	Disconnects the input input from this output. More...

void	disconnectInputs ()
	Disconnects all connected inputs from this output. More...

bool	connectInput (ItemInput *input)
	Connects this output to the input input. More...

Public Member Functions inherited from AbstractItemInputOutputBase
	AbstractItemInputOutputBase (class AbstractItem *parent, int transportType, QString const &description, QRectF const &shape)
	Constructs an AbstractItemInputOutputBase. More...

int	transportType () const
	Returns the type of data this object handles. More...

AbstractItem *	owner () const
	Returns the owner of this object. More...

virtual QPointF	localPosition () const
	Returns the local position of this object. More...

virtual QRectF	boundingRect () const

virtual void	paint (QPainter painter, QStyleOptionGraphicsItem const option, QWidget *widget)

Protected Member Functions
void	setData (QObject *data)
	Sets the data provided by this output to data. Causes this output and the connected inputs to emit the dataChanged signal. More...

Protected Member Functions inherited from AbstractItemInputOutputBase
void	setLocalPosition (QPointF const &position)
	Sets the local position of this object. More...

void	updateScenePosition ()
	Updates the scene position. Causes this objects position within the item scene to be updated. More...

Detailed Description

The ItemOutput class represents an output that belongs to an item.

An output can be connected to zero or more inputs which may read its data.

An outputs transport type specifies what type of data it supports. Only inputs and outputs that have the same transport type may be connected to each other. See the AbstractItem class for a description of the transport type.

See also: Item; ItemInput; ItemInputOutputBase

Constructor & Destructor Documentation

◆ ItemOutput()

ItemOutput::ItemOutput	(	AbstractItem *	owner,
		int	transportType,
		QString const &	description,
		QRectF const &	shape = `{0, 0, 0, 0}`
	)

Constructs an ItemOutput.

Parameters

owner	The Item this output belongs to
transportType	The type of data this output provides
description	A description of this output that is shown to the user
shape	The shape of this output

Member Function Documentation

◆ connectInput()

bool ItemOutput::connectInput ( ItemInput * input )

Connects this output to the input input.

Parameters

input The input this output is to be connected to

Returns: true upon success, false otherwise. The function fails if a NULL output is provided, or if the types of data of the output and input do not match, or if the input is already connected to an output, or if this output is already connected to the input input