org.imajine.image.render

Class DragPanningController

java.lang.Object

org.imajine.image.render.DragPanningController

public class DragPanningController
extends Object

This class activated panning-by-dragging, that is the capability of moving the photo in the viewport by dragging with the mouse.

Version:

$Id: DragPanningController.java,v 20e39e8c9fac 2012/02/02 16:35:02 fabrizio $

Author:

Fabrizio Giudici

Constructor Summary

Constructors

Constructor and Description
DragPanningController(EditableImageRenderer imageRenderer) Creates a new instance of this class, attached to the given renderer.

Method Summary

Methods

Modifier and Type	Method and Description
void	centerImage() Centers the image on the screen, keeping the current scale.
boolean	isEnabled() Returns true if the controller is enabled.
void	setEnabled(boolean enabled) Enables or disables this controller.

Methods inherited from class java.lang.Object

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

Constructor Detail

DragPanningController

public DragPanningController(EditableImageRenderer imageRenderer)

Creates a new instance of this class, attached to the given renderer. This controller must be activated with setEnabled(true) in order to be used.

Parameters:

imageRenderer - the image renderer

Method Detail

setEnabled

public void setEnabled(boolean enabled)

Enables or disables this controller. As this class attaches some listeners to the image renderer component, it's advisable to disable it when it's not needed, in order to facilitate garbage collection.

Parameters:

enabled - true if must be enabled, false otherwise

isEnabled

public boolean isEnabled()

Returns true if the controller is enabled.

Returns:

true if enabled

centerImage

public void centerImage()

Centers the image on the screen, keeping the current scale.