Class PaintEvent
java.lang.Object
java.util.EventObject
java.awt.AWTEvent
java.awt.event.ComponentEvent
java.awt.event.PaintEvent
- All Implemented Interfaces:
Serializable
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:
-
Field Summary
Modifier and TypeFieldDescriptionstatic final int
The paint event type.static final int
Marks the first integer id for the range of paint event ids.static final int
Marks the last integer id for the range of paint event ids.static final int
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
ConstructorDescriptionPaintEvent
(Component source, int id, Rectangle updateRect) Constructs aPaintEvent
object with the specified source component and type. -
Method Summary
Modifier and TypeMethodDescriptionReturns the rectangle representing the area which needs to be repainted in response to this event.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.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:
-
PAINT_LAST
public static final int PAINT_LASTMarks the last integer id for the range of paint event ids.- See Also:
-
PAINT
public static final int PAINTThe paint event type.- See Also:
-
UPDATE
public static final int UPDATEThe update event type.- See Also:
-
-
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:
-
-
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
-
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 classComponentEvent
- Returns:
- a string identifying the event and its attributes
-