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Java example source code file (PaintEvent.java)
The PaintEvent.java Java example source code/*
* Copyright (c) 1996, 2008, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package java.awt.event;
import java.awt.Component;
import java.awt.Rectangle;
/**
* The component-level paint event.
* This event is a special type which is used to ensure that
* paint/update method calls are serialized along with the other
* events delivered from the event queue. This event is not
* designed to be used with the Event Listener model; programs
* should continue to override paint/update methods in order
* render themselves properly.
* <p>
* An unspecified behavior will be caused if the {@code id} parameter
* of any particular {@code PaintEvent} instance is not
* in the range from {@code PAINT_FIRST} to {@code PAINT_LAST}.
*
* @author Amy Fowler
* @since 1.1
*/
public class PaintEvent extends ComponentEvent {
/**
* Marks the first integer id for the range of paint event ids.
*/
public static final int PAINT_FIRST = 800;
/**
* Marks the last integer id for the range of paint event ids.
*/
public static final int PAINT_LAST = 801;
/**
* The paint event type.
*/
public static final int PAINT = PAINT_FIRST;
/**
* The update event type.
*/
public static final int UPDATE = PAINT_FIRST + 1; //801
/**
* This is the rectangle that represents the area on the source
* component that requires a repaint.
* This rectangle should be non null.
*
* @serial
* @see java.awt.Rectangle
* @see #setUpdateRect(Rectangle)
* @see #getUpdateRect()
*/
Rectangle updateRect;
/*
* JDK 1.1 serialVersionUID
*/
private static final long serialVersionUID = 1267492026433337593L;
/**
* Constructs a <code>PaintEvent object with the specified
* source component and type.
* <p> This method throws an
* <code>IllegalArgumentException if
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