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PaintEvent.java
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1998-09-22
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/*
* @(#)PaintEvent.java 1.7 98/07/01
*
* Copyright 1995-1998 by Sun Microsystems, Inc.,
* 901 San Antonio Road, Palo Alto, California, 94303, U.S.A.
* All rights reserved.
*
* This software is the confidential and proprietary information
* of Sun Microsystems, Inc. ("Confidential Information"). You
* shall not disclose such Confidential Information and shall use
* it only in accordance with the terms of the license agreement
* you entered into with Sun.
*/
package java.awt.event;
import java.awt.Component;
import java.awt.Event;
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.
*
* @version 1.7 07/01/98
* @author Amy Fowler
*/
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
Rectangle updateRect;
/*
* JDK 1.1 serialVersionUID
*/
private static final long serialVersionUID = 1267492026433337593L;
/**
* Constructs a PaintEvent object with the specified source component
* and type.
* @param source the object where the event originated
* @id the event type
* @updateRect the rectangle area which needs to be repainted
*/
public PaintEvent(Component source, int id, Rectangle updateRect) {
super(source, id);
this.updateRect = updateRect;
}
/**
* Returns the rectangle representing the area which needs to be
* repainted in response to this event.
*/
public Rectangle getUpdateRect() {
return updateRect;
}
/**
* Sets the rectangle representing the area which needs to be
* repainted in response to this event.
* @param updateRect the rectangle area which needs to be repainted
*/
public void setUpdateRect(Rectangle updateRect) {
this.updateRect = updateRect;
}
public String paramString() {
String typeStr;
switch(id) {
case PAINT:
typeStr = "PAINT";
break;
case UPDATE:
typeStr = "UPDATE";
break;
default:
typeStr = "unknown type";
}
return typeStr + ",updateRect="+(updateRect != null ? updateRect.toString() : "null");
}
}