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 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 declared in class java.awt.event.ComponentEvent
COMPONENT_FIRST, COMPONENT_HIDDEN, COMPONENT_LAST, COMPONENT_MOVED, COMPONENT_RESIZED, COMPONENT_SHOWN
Fields declared in 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 declared in class java.util.EventObject
source
-
Constructor Summary
Constructors Constructor Description PaintEvent(Component source, int id, Rectangle updateRect)
Constructs aPaintEvent
object with the specified source component and type. -
Method Summary
Modifier and Type Method Description Rectangle
getUpdateRect()
Returns the rectangle representing the area which needs to be repainted in response to this event.void
setUpdateRect(Rectangle updateRect)
Sets the rectangle representing the area which needs to be repainted in response to this event.Methods declared in class java.awt.event.ComponentEvent
getComponent, paramString
Methods declared in class java.util.EventObject
getSource
-
Field Details
-
PAINT_FIRST
public static final int PAINT_FIRSTMarks the first integer id for the range of paint event ids.- See Also:
- Constant Field Values
-
PAINT_LAST
public static final int PAINT_LASTMarks the last integer id for the range of paint event ids.- See Also:
- Constant Field Values
-
PAINT
public static final int PAINTThe paint event type.- See Also:
- Constant Field Values
-
UPDATE
public static final int UPDATEThe update event type.- See Also:
- Constant Field Values
-
-
Constructor Details
-
PaintEvent
Constructs aPaintEvent
object with the specified source component and type.This method throws an
IllegalArgumentException
ifsource
isnull
.- Parameters:
source
- The object where the event originatedid
- The integer that identifies the event type. For information on allowable values, see the class description forPaintEvent
updateRect
- The rectangle area which needs to be repainted- Throws:
IllegalArgumentException
- ifsource
is null- See Also:
EventObject.getSource()
,AWTEvent.getID()
,getUpdateRect()
-
-
Method Details
-
getUpdateRect
Returns the rectangle representing the area which needs to be repainted in response to this event.- Returns:
- the rectangle representing the area which needs to be repainted in response to this event
-
setUpdateRect
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
-