IlvMakeNodeInteractor Class Reference

Grapher interactor to create nodes. More...

#include <ilviews/grapher/inters.h>

Inheritance diagram for IlvMakeNodeInteractor:

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

Protected Member Functions
virtual IlvGraphic *	createNode (const IlvRect &rect)
	Creates a new node. More...

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.

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.

Member Function Documentation

virtual IlvGraphic* IlvMakeNodeInteractor::createNode ( const IlvRect &  rect )

protectedvirtual

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 IlvMakeReliefNodeInteractor, and IlvMakeShadowNodeInteractor.

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.