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Java 2 Platform SE v1.3.1: Class PaintEvent - JDK 5 Documentation v1.3.1, Java 2 SDK 英文文档

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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

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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

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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, PAINT_EVENT_MASK, RESERVED_ID_MAX, TEXT_EVENT_MASK, WINDOW_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, finalize, getID, isConsumed, toString

 

Methods inherited from class java.util.EventObject

getSource

 

Methods inherited from class java.lang.Object

clone, equals, 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.

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PAINT_LAST

public static final int PAINT_LAST

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

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PAINT

public static final int PAINT

The paint event type.

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UPDATE

public static final int UPDATE

The update event type.

Constructor Detail

PaintEvent

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

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

Parameters:

source - the object where the event originated

id - the event type

updateRect - the rectangle area which needs to be repainted

Method Detail

getUpdateRect

public Rectangle getUpdateRect()

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

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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

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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

Following copied from class: java.awt.event.ComponentEvent

Returns:

a string identifying the event and its attributes

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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