java.awt.event

Class PaintEvent

java.lang.Object

java.util.EventObject

java.awt.AWTEvent

java.awt.event.ComponentEvent

java.awt.event.PaintEvent

All Implemented Interfaces:

Serializable

public class PaintEvent
extends ComponentEvent

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.

An unspecified behavior will be caused if the id parameter of any particular PaintEvent instance is not in the range from PAINT_FIRST to PAINT_LAST.

Since:

1.1

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static int	PAINT The paint event type.
static int	PAINT_FIRST Marks the first integer id for the range of paint event ids.
static int	PAINT_LAST Marks the last integer id for the range of paint event ids.
static int	UPDATE The update event type.

Fields inherited from class java.awt.event.ComponentEvent

COMPONENT_FIRST, COMPONENT_HIDDEN, COMPONENT_LAST, COMPONENT_MOVED, COMPONENT_RESIZED, COMPONENT_SHOWN

Fields inherited from class java.awt.AWTEvent

ACTION_EVENT_MASK, ADJUSTMENT_EVENT_MASK, COMPONENT_EVENT_MASK, consumed, CONTAINER_EVENT_MASK, FOCUS_EVENT_MASK, HIERARCHY_BOUNDS_EVENT_MASK, HIERARCHY_EVENT_MASK, id, INPUT_METHOD_EVENT_MASK, INVOCATION_EVENT_MASK, ITEM_EVENT_MASK, KEY_EVENT_MASK, MOUSE_EVENT_MASK, MOUSE_MOTION_EVENT_MASK, MOUSE_WHEEL_EVENT_MASK, PAINT_EVENT_MASK, RESERVED_ID_MAX, TEXT_EVENT_MASK, WINDOW_EVENT_MASK, WINDOW_FOCUS_EVENT_MASK, WINDOW_STATE_EVENT_MASK

Fields inherited from class java.util.EventObject

source

Constructor Summary

Constructors

Constructor and Description
PaintEvent(Component source, int id, Rectangle updateRect) Constructs a PaintEvent object with the specified source component and type.

Method Summary

Modifier and Type	Method and Description
Rectangle	getUpdateRect() Returns the rectangle representing the area which needs to be repainted in response to this event.
String	paramString() Returns a parameter string identifying this event.
void	setUpdateRect(Rectangle updateRect) Sets the rectangle representing the area which needs to be repainted in response to this event.

Methods inherited from class java.awt.event.ComponentEvent

getComponent

Methods inherited from class java.awt.AWTEvent

consume, getID, isConsumed, setSource, toString

Methods inherited from class java.util.EventObject

getSource

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

PAINT_FIRST

public static final int PAINT_FIRST

Marks the first integer id for the range of paint event ids.

See Also:

Constant Field Values

PAINT_LAST

public static final int PAINT_LAST

Marks the last integer id for the range of paint event ids.

See Also:

Constant Field Values

PAINT

public static final int PAINT

The paint event type.

See Also:

Constant Field Values

UPDATE

public static final int UPDATE

The update event type.

See Also:

Constant Field Values

Constructor Detail

PaintEvent

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

Constructs a PaintEvent object with the specified source component and type.

This method throws an IllegalArgumentException if source is null.

Parameters:

source - The object where the event originated

id - The integer that identifies the event type. For information on allowable values, see the class description for PaintEvent

updateRect - The rectangle area which needs to be repainted

Throws:

IllegalArgumentException - if source is null

See Also:

EventObject.getSource(), AWTEvent.getID(), getUpdateRect()

Method Detail

getUpdateRect

public Rectangle getUpdateRect()

Returns the rectangle representing the area which needs to be repainted in response to this event.

setUpdateRect

public void setUpdateRect(Rectangle updateRect)

Sets the rectangle representing the area which needs to be repainted in response to this event.

Parameters:

updateRect - the rectangle area which needs to be repainted

paramString

public String paramString()

Description copied from class: ComponentEvent

Returns a parameter string identifying this event. This method is useful for event-logging and for debugging.

Overrides:

paramString in class ComponentEvent

Returns:

a string identifying the event and its attributes