IlvMoveInteractor Class Reference

Manager interactor class. More...

#include <ilviews/graphics/inter.h>

Inheritance diagram for IlvMoveInteractor:

List of all members.

Public Member Functions
virtual void	doIt (IlvGraphic *object, const IlvPoint &deltaMove, const IlvTransformer *t=0)
	Finalizes the interaction by moving the object.
virtual void	drawGhost (IlvView *view, IlvGraphic *ghost, const IlvPoint &deltaMove, const IlvTransformer *t)
	Visual feedback during the interaction.
virtual void	endOperation ()
	Performs the actions needed when the interaction ends.
virtual IlBoolean	handleEvent (IlvGraphic *obj, IlvEvent &event, const IlvTransformer *t)
	Handles events received by the interactor.
virtual void	validate (IlvGraphic *object, IlvPoint &p, const IlvTransformer *t=0)
	Lets you modify intermediate positions during the interaction.

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Detailed Description

Manager interactor class.

Library: views

The IlvMoveInteractor class lets the user move an object by dragging it.

The registered name of this interactor is "Move".

See also:

IlvReshapeInteractor, IlvMoveReshapeInteractor.

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Member Function Documentation

virtual void IlvMoveInteractor::doIt	(	IlvGraphic *	object,
		const IlvPoint &	deltaMove,
		const IlvTransformer *	t = 0
	)			[virtual]

Finalizes the interaction by moving the object.

Called to move the object to a new position. After moving the object, this method calls the object's callback corresponding to the Move symbol.

Parameters:

	object	The graphic object.
	deltaMove	The difference between the new and the initial location of the object in the object coordinate system.
	t	The transformer applied to the view.

See also:

IlvGraphic::setCallback

virtual void IlvMoveInteractor::drawGhost	(	IlvView *	view,
		IlvGraphic *	ghost,
		const IlvPoint &	deltaMove,
		const IlvTransformer *	t
	)			[virtual]

Visual feedback during the interaction.

Called to draw a preview image of the resulting user action. It is generally invoked by handleEvent as a response to user events.

Parameters:

	view	The view where the object is displayed.
	ghost	The graphic object used as ghost image.
	deltaMove	The difference between the current and the initial location of the object in view coordinates.
	t	The transformer applied to the view.

virtual void IlvMoveInteractor::endOperation

(

)

[virtual]

Performs the actions needed when the interaction ends.

The default implementation resets the interactor flags and remove it from its parent, if it exists.

See also:

IlvStackInteractorInterface::removeFromParent

Reimplemented from IlvInteractor.

virtual IlBoolean IlvMoveInteractor::handleEvent	(	IlvGraphic *	g,
		IlvEvent &	event,
		const IlvTransformer *	t
	)			[virtual]

Handles events received by the interactor.

This method is the entry point of all events dispatched to this interactor.

Parameters:

	g	The graphic object that receives the event.
	event	The received event.
	t	The transformer applied to the view in which the event occurred.

Returns:

IlTrue if the event was successfully handled and IlFalse otherwise.

Implements IlvInteractor.

virtual void IlvMoveInteractor::validate	(	IlvGraphic *	object,
		IlvPoint &	p,
		const IlvTransformer *	t = 0
	)			[virtual]

Lets you modify intermediate positions during the interaction.

Called for each mouse movement so that the user can modify the object position. When the mouse button is released, doIt is called.

Parameters:

	object	The considered graphic object.
	p	The current position, in the object coordinate system.
	t	The transformer applied to the view.