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Java AWT

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java.awt.event Reference
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PaintEvent (New)

Name

PaintEvent (New)

[Graphic: Figure from the text]

Description

The PaintEvent class represents the paint and update operations that the AWT performs on components. There is no PaintListener interface, so the only way to catch these events is to override paint(Graphics) and update(Graphics) in Component. This class exists so that paint events will get serialized properly.

Class Definition

public class java.awt.event.PaintEvent
   extends java.awt.event.ComponentEvent {
  // Constants
  public final static int PAINT;
  public final static int PAINT_FIRST;
  public final static int PAINT_LAST;
  public final static int UPDATE;
  // Constructor
  public PaintEvent (Component source, int id, Rectangle updateRect);
  // Instance Methods
  public Rectangle getUpdateRect();
  public String paramString();
  public void setUpdateRect (Rectangle updateRect);
}

Class Definition

public class java.awt.event.PaintEvent
        extends java.awt.event.ComponentEvent {
  // Constants
  public final static int PAINT;
  public final static int PAINT_FIRST;
  public final static int PAINT_LAST;
  public final static int UPDATE;
  //Constructor
  public PaintEvent (Component source, int id, Rectangle updateRect);
  // Instance Methods
  public Rectangle getUpdateRect();
  public String paramString();
  public void setUpdateRect (Rectangle updateRect);
}

Constants

PAINT

public final static int PAINT

The paint event type.

PAINT_FIRST

public final static int PAINT_FIRST

Specifies the beginning range of paint event ID values.

PAINT_LAST

public final static int PAINT_LAST

Specifies the ending range of paint event ID values.

UPDATE

public final static int UPDATE

The update event type.

Constructor

PaintEvent

public PaintEvent (Component source, ind id, Rectangle updateRect)

Parameters

source

The source of the event.

id

The event type ID.

g

The rectangular area to paint.

Description

Constructs a PaintEvent with the given characteristics.

Instance Methods

getUpdateRect

public Rectangle getUpdateRect()

Returns

The rectangular area that needs painting.

paramString

public String paramString()

Returns

String with current settings of the PaintEvent.

Overrides

ComponentEvent.paramString()

Description

Helper method for toString() to generate string of current settings.

setUpdateRect

public void setUpdateRect (Rectangle updateRect)

Parameters

updateRect

The rectangular area to paint.

Description

Changes the rectangular area that this PaintEvent will paint.

See Also

Component, ComponentEvent, Graphics


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