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- java.lang.Object
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- java.util.EventObject
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- java.awt.AWTEvent
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- java.awt.event.ComponentEvent
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- java.awt.event.PaintEvent
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- 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 particularPaintEvent
instance is not in the range fromPAINT_FIRST
toPAINT_LAST
.- Since:
- 1.1
- See Also:
- Serialized Form
-
-
Field Summary
Fields Modifier and Type Field and 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 inherited from class java.awt.event.ComponentEvent
COMPONENT_FIRST, COMPONENT_HIDDEN, COMPONENT_LAST, COMPONENT_MOVED, COMPONENT_RESIZED, COMPONENT_SHOWN
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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
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Fields inherited from class java.util.EventObject
source
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Constructor Summary
Constructors Constructor and Description PaintEvent(Component source, int id, Rectangle updateRect)
Constructs aPaintEvent
object with the specified source component and type.
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Method Summary
Methods Modifier and Type Method and Description 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
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Methods inherited from class java.awt.AWTEvent
consume, getID, isConsumed, setSource, toString
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Methods inherited from class java.util.EventObject
getSource
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Field Detail
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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
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Constructor Detail
-
PaintEvent
public PaintEvent(Component source, int id, Rectangle updateRect)
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()
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-
Method Detail
-
getUpdateRect
public Rectangle getUpdateRect()
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
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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 classComponentEvent
- Returns:
- a string identifying the event and its attributes
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