API java : PaintEvent

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.

Since:

1.1

See Also:

Serialized Form

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

 

Method Summary
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

PaintEvent

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

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

Note that passing in an invalid id results in unspecified behavior. This method throws an IllegalArgumentException if source is null.

Parameters:

source - the object where the event originated

id - the event type

updateRect - the rectangle area which needs to be repainted

Throws:

IllegalArgumentException - if source is null

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