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
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
Constructor | Description |
---|---|
PaintEvent(Component source,
int id,
Rectangle updateRect) | Constructs a |
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.awt.AWTEvent
consume, getID, isConsumed, setSource, toString
Methods declared in class java.util.EventObject
getSource
Methods declared in 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 forPaintEvent
-
updateRect
- The rectangle area which needs to be repainted - Throws:
-
IllegalArgumentException
- ifsource
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.
- 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