IlvMakeNodeInteractor Class Reference

Grapher interactor to create nodes. More...

#include <ilviews/grapher/inters.h>

Inheritance diagram for IlvMakeNodeInteractor:

List of all members.

Public Member Functions
	IlvMakeNodeInteractor (IlvManager *mgr, IlvView *v)
	Constructor.
virtual void	doIt (IlvRect &rect)
	Creates and adds the node.
IlvMakeNodeInteractorFactory *	getFactory () const
	Returns the node factory associated with the instance.
IlvMakeNodeInteractorFactory *	setFactory (IlvMakeNodeInteractorFactory *factory)
	Changes the node factory associated with the instance.
Protected Member Functions
virtual IlvGraphic *	createNode (const IlvRect &rect)
	Creates a new node.

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Detailed Description

Grapher interactor to create nodes.

Library: ilvgrapher

This interactor class enables the user to interactively create nodes in an IlvGrapher instance. There are three ways of specifying what type of graphic object should be created:

• By subtyping the class and overloading the IlvMakeNodeInteractor::createNode method.
• By subtyping the IlvMakeNodeInteractorFactory class and overloading its IlvMakeNodeInteractorFactory::createNode method to return the appropriate graphic instance. You can then associate the node factory with the interactor using the IlvMakeNodeInteractor::setFactory method.
• By using the IlvGrapher::setDefaultNodeClass method.

See also:

IlvMakeNodeInteractorFactory.

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Constructor & Destructor Documentation

IlvMakeNodeInteractor::IlvMakeNodeInteractor	(	IlvManager *	mgr,
		IlvView *	v
	)

Constructor.

The constructor initializes a new instance of the IlvMakeNodeInteractor class for the view v and the grapher mgr.

Parameters:

	mgr	The grapher to which the interactor is attached.
	v	The view to which the interactor is attached.

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Member Function Documentation

virtual IlvGraphic* IlvMakeNodeInteractor::createNode

(

const IlvRect &

rect

)

[protected, virtual]

Creates a new node.

The default implementation uses the associated factory (see IlvMakeNodeInteractor::setFactory). If no factory is defined, it returns an instance of the default node class registered with the IlvGrapher::setDefaultNodeClass method.

Parameters:

rect

The size of the new node, in manager coordinates.

Returns:

The created graphic object.

See also:

IlvMakeNodeInteractorFactory::createNode.

Reimplemented in IlvMakeShadowNodeInteractor, and IlvMakeReliefNodeInteractor.

virtual void IlvMakeNodeInteractor::doIt

(

IlvRect &

rect

)

[virtual]

Creates and adds the node.

Called when the user has created a rectangular region in the working view. The default implementation uses the IlvMakeNodeInteractor::createNode method to create the graphic object that will be added as a node to the grapher.

Parameters:

rect

The size of the new node, in manager coordinates.

Reimplemented from IlvDragRectangleInteractor.

IlvMakeNodeInteractorFactory* IlvMakeNodeInteractor::getFactory

(

)

const

Returns the node factory associated with the instance.

Returns:

The current node factory, or 0 if there is none.

IlvMakeNodeInteractorFactory* IlvMakeNodeInteractor::setFactory

(

IlvMakeNodeInteractorFactory *

factory

)

Changes the node factory associated with the instance.

Returns the previous factory if there was one. It can therefore be deleted or kept for future use.

Parameters:

factory

The new node factory.

Returns:

The previous node factory.