/*******************************************************************************
* Copyright (c) 2000, 2005 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.draw2d;
import org.eclipse.draw2d.geometry.Rectangle;
/**
* A figure that allows its children to extend into negative coordinates. This figure
* must be placed in a {@link org.eclipse.draw2d.FreeformViewport}. Also, you shouldn't
* call {@link IFigure#setBounds(Rectangle)} on this figure. The bounds will be
* calculated based on the extent of its children. A FreeformFigure's bounds will be the
* smallest rectangle that will contain all of its children.
*/
public interface FreeformFigure
extends IFigure
{
/**
* Adds a FreeformListener to this FreeformFigure.
* @param listener the listener
*/
void addFreeformListener(FreeformListener listener);
/**
* Notifies listeners that the freeform extent (i.e. bounds) has changed.
*/
void fireExtentChanged();
/**
* Returns the freeform extent, essentially the bounds of the FreeformFigure. This is
* based on the extent of its children.
* @return the freeform extent
*/
Rectangle getFreeformExtent();
/**
* Removes the given listener from this FreeformFigure.
* @param listener the listener
*/
void removeFreeformListener(FreeformListener listener);
/**
* Sets the freeform bounds of this FreeformFigure.
* @param bounds the new freeform bounds
*/
void setFreeformBounds(Rectangle bounds);
}