OpenJDK 27 · java.awt.event.PaintEvent · APIdia, the JavaDoc alternative

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.

Field Summary

Modifier and Type	Field and Description
public static final int	PAINT The paint event type.
public static final int	PAINT_FIRST Marks the first integer id for the range of paint event ids.
public static final int	PAINT_LAST Marks the last integer id for the range of paint event ids.
private static final long	serialVersionUID Hides java.awt.event.ComponentEvent.serialVersionUID. Use serialVersionUID from JDK 1.1 for interoperability.
public static final int	UPDATE The update event type.
pack-priv Rectangle	updateRect This is the rectangle that represents the area on the source component that requires a repaint.

Inherited from java.awt.event.ComponentEvent:: COMPONENT_FIRST COMPONENT_HIDDEN COMPONENT_LAST COMPONENT_MOVED COMPONENT_RESIZED COMPONENT_SHOWN

Constructor Summary

Access	Constructor and Description
public	PaintEvent(Component The object where the event originated source, int The integer that identifies the event type. For information on allowable values, see the class description for `PaintEvent` id, Rectangle The rectangle area which needs to be repainted updateRect) Constructs a `PaintEvent` object with the specified source component and type.

Method Summary

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

Inherited from java.awt.event.ComponentEvent:: getComponent

Field Detail

PAINT	back to summary
public static final int PAINT The paint event type.

PAINT_FIRST	back to summary
public static final int PAINT_FIRST Marks the first integer id for the range of paint event ids.

PAINT_LAST	back to summary
public static final int PAINT_LAST Marks the last integer id for the range of paint event ids.

serialVersionUID	back to summary
private static final long serialVersionUID Hides java.awt.event.ComponentEvent.serialVersionUID. Use serialVersionUID from JDK 1.1 for interoperability. Annotations @Serial

serialVersionUID

back to summary

private static final long serialVersionUID

Hides java.awt.event.ComponentEvent.serialVersionUID.

Use serialVersionUID from JDK 1.1 for interoperability.

Annotations

@Serial

UPDATE	back to summary
public static final int UPDATE The update event type.

updateRect back to summary

updateRect	back to summary
pack-priv Rectangle updateRect This is the rectangle that represents the area on the source component that requires a repaint. This rectangle should be non null. See Also `java.awt.Rectangle`, `setUpdateRect(Rectangle)`, `getUpdateRect()`

pack-priv Rectangle updateRect

This is the rectangle that represents the area on the source component that requires a repaint. This rectangle should be non null.

See Also: java.awt.Rectangle, setUpdateRect(Rectangle), getUpdateRect()

Constructor Detail

PaintEvent back to summary

PaintEvent	back to summary
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:Component The object where the event originated id:int The integer that identifies the event type. For information on allowable values, see the class description for `PaintEvent` updateRect:Rectangle The rectangle area which needs to be repainted Exceptions IllegalArgumentException: if `source` is null See Also `getSource()`, `getID()`, `getUpdateRect()`

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:Component: The object where the event originated
id:int: The integer that identifies the event type. For information on allowable values, see the class description for PaintEvent
updateRect:Rectangle: The rectangle area which needs to be repainted

Exceptions

IllegalArgumentException:: if source is null

Method Detail

getUpdateRect	back to summary
public Rectangle getUpdateRect() Returns the rectangle representing the area which needs to be repainted in response to this event. Returns:Rectangle the rectangle representing the area which needs to be repainted in response to this event

getUpdateRect

back to summary

public Rectangle getUpdateRect()

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

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

paramString	back to summary
public String paramString() Overrides java.awt.event.ComponentEvent.paramString. Doc from java.awt.event.ComponentEvent.paramString. Returns a parameter string identifying this event. This method is useful for event-logging and for debugging.

paramString

back to summary

public String paramString()

Overrides java.awt.event.ComponentEvent.paramString.

Doc from java.awt.event.ComponentEvent.paramString.

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

setUpdateRect	back to summary
public void setUpdateRect(Rectangle updateRect) Sets the rectangle representing the area which needs to be repainted in response to this event. Parameters updateRect:Rectangle the rectangle area which needs to be repainted

setUpdateRect

back to summary

public void setUpdateRect(Rectangle updateRect)

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

Parameters

updateRect:Rectangle: the rectangle area which needs to be repainted

public Class PaintEvent

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail