IlvMoveInteractor Class Reference

Manager interactor class. More...

#include <ilviews/graphics/inter.h>

Inheritance diagram for IlvMoveInteractor:

Public Member Functions
virtual void	doIt (IlvGraphic *object, const IlvPoint &deltaMove, const IlvTransformer *t=0)
	Finalizes the interaction by moving the object. More...
virtual void	drawGhost (IlvView *view, IlvGraphic *ghost, const IlvPoint &deltaMove, const IlvTransformer *t)
	Visual feedback during the interaction. More...
virtual void	endOperation ()
	Performs the actions needed when the interaction ends. More...
virtual IlBoolean	handleEvent (IlvGraphic *obj, IlvEvent &event, const IlvTransformer *t)
	Handles events received by the interactor. More...
virtual void	validate (IlvGraphic *object, IlvPoint &p, const IlvTransformer *t=0)
	Lets you modify intermediate positions during the interaction. More...
Public Member Functions inherited from IlvInteractor
virtual void	abort (IlvGraphic *obj)
	Aborts the interactor. More...
virtual IlBoolean	accept (const IlvGraphic *obj) const
	Indicates whether the current interactor can be associated with a given object. More...
virtual void	getCallbackTypes (IlUInt &count, const char *const **names, const IlSymbol *const **types) const
	Gets the number of register callback types for the interactor. More...
const char *	getRegisteredName () const
	Returns the name of the predefined shared instance. More...
IlBoolean	isAborted () const
	Indicates whether the current interactor is in an aborted state. More...
IlBoolean	isInOperation () const
	Indicates whether the current interactor is in an interaction state. More...
void	lock ()
	Locks the current instance. Increments the counter that is used to know how many objects reference the current instance. More...
virtual void	startOperation ()
	Performs the actions needed when the interaction starts. More...
void	unLock ()
	Unlocks the current instance. Decrements the reference counter. When the counter drops down to zero, the current instance is deleted. More...

Additional Inherited Members
Static Public Member Functions inherited from IlvInteractor
static IlvInteractor *	Get (const char *name, IlBoolean=IlTrue)
	Returns a predefined shared interactor instance. More...

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.

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.