diva.canvas.interactor

Class BoundedDragInteractor

java.lang.Object

diva.canvas.interactor.AbstractInteractor

diva.canvas.interactor.DragInteractor

diva.canvas.interactor.BoundedDragInteractor

All Implemented Interfaces:

LayerListener, LayerMotionListener, Interactor, java.util.EventListener

public class BoundedDragInteractor
extends DragInteractor

An interactor that drags its target only within a given rectangular region. An instance of this class sets itself up so that the dragged figures or items always remain within the given region. To do so, it creates an instance of BoundsConstraint that it attaches to itself, and overrides the setup() method to initialize the constraint according to the size of the target.

This interactor is intended more as an example of how to produce a customized drag-interactor than anything else.

Version:

$Id$

Author:

John Reekie

Constructor Summary

Constructors

Constructor and Description
BoundedDragInteractor(java.awt.geom.Rectangle2D bounds) Create an instance that keeps figures inside the given regio

Method Summary

Modifier and Type	Method and Description
void	setup(LayerEvent e) Adjust the bounds so that the bounding-box of the target stays within the region.

Methods inherited from class diva.canvas.interactor.DragInteractor

addLayerListener, appendConstraint, constrainPoint, fireLayerEvent, getSelectiveEnabled, getTargetArray, getX, getY, mouseDragged, mousePressed, mouseReleased, prependConstraint, removeLayerListener, setSelectiveEnabled, setTargetArray, targets, translate

Methods inherited from class diva.canvas.interactor.AbstractInteractor

accept, getMouseFilter, isConsuming, isEnabled, isMotionEnabled, mouseClicked, mouseEntered, mouseExited, mouseMoved, setConsuming, setEnabled, setMotionEnabled, setMouseFilter

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BoundedDragInteractor

public BoundedDragInteractor(java.awt.geom.Rectangle2D bounds)

Create an instance that keeps figures inside the given regio

Method Detail

setup

public void setup(LayerEvent e)

Adjust the bounds so that the bounding-box of the target stays within the region.

Overrides:

setup in class DragInteractor

Parameters:

e - The event