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jeremybenn |
/* PaintEvent.java -- an area of the screen needs to be repainted
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Copyright (C) 1999, 2002, 2005 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.awt.event;
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import java.awt.Component;
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import java.awt.Rectangle;
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/**
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* This event is generated when an area of the screen needs to be painted.
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* This event is not meant for users, but exists to allow proper serialization
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* behavior in the EventQueue with user-accessible events.
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*
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* @author Aaron M. Renn (arenn@urbanophile.com)
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* @since 1.1
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* @status updated to 1.4
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*/
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public class PaintEvent extends ComponentEvent
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{
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/**
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* Compatible with JDK 1.1+.
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*/
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private static final long serialVersionUID = 1267492026433337593L;
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/** This is the first id in the range of event ids used by this class. */
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public static final int PAINT_FIRST = 800;
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/** This is the last id in the range of event ids used by this class. */
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public static final int PAINT_LAST = 801;
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/** This id is for paint event types. */
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public static final int PAINT = 800;
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/** This id is for update event types. */
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public static final int UPDATE = 801;
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/**
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* This is the rectange to be painted or updated.
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*
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* @see #getUpdateRect()
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* @see #setUpdateRect(Rectangle)
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* @serial the non-null rectangle to be painted
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*/
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private Rectangle updateRect;
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/**
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* Initializes a new instance of <code>PaintEvent</code> with the specified
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* source, id, and update region. Note that an invalid id leads to
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* unspecified results.
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*
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* @param source the event source
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* @param id the event id
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* @param updateRect the rectangle to repaint
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* @throws IllegalArgumentException if source is null
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*/
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public PaintEvent(Component source, int id, Rectangle updateRect)
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{
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super(source, id);
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this.updateRect = updateRect;
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}
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/**
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* Returns the rectange to be updated for this event.
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*
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* @return the rectangle to update
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*/
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public Rectangle getUpdateRect()
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{
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return updateRect;
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}
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/**
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* Sets the rectangle to be updated for this event.
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*
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* @param updateRect the new update rectangle for this event
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*/
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public void setUpdateRect(Rectangle updateRect)
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{
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this.updateRect = updateRect;
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}
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/**
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* Returns a string identifying this event.
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*
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* @return a string identifying this event
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*/
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public String paramString()
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{
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return (id == PAINT ? "PAINT,updateRect=" : id == UPDATE
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? "UPDATE,updateRect=" : "unknown type,updateRect=") + updateRect;
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}
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} // class PaintEvent
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