java.awt.event
Class PaintEvent
- 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
idparameter of any particularPaintEventinstance is not in the range fromPAINT_FIRSTtoPAINT_LAST.- Since:
- 1.1
- See Also:
- Serialized Form
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Field Summary
Fields Modifier and Type Field and Description static intPAINTThe paint event type.static intPAINT_FIRSTMarks the first integer id for the range of paint event ids.static intPAINT_LASTMarks the last integer id for the range of paint event ids.static intUPDATEThe 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 aPaintEventobject with the specified source component and type.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method and Description RectanglegetUpdateRect()Returns the rectangle representing the area which needs to be repainted in response to this event.StringparamString()Returns a parameter string identifying this event.voidsetUpdateRect(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.util.EventObject
getSource
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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
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Constructor Detail
PaintEvent
public PaintEvent(Component source, int id, Rectangle updateRect)
Constructs aPaintEventobject with the specified source component and type.This method throws an
IllegalArgumentExceptionifsourceisnull.- Parameters:
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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:
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IllegalArgumentException- ifsourceis null - See Also:
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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:
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updateRect- the rectangle area which needs to be repainted
paramString
public String paramString()
Description copied from class:ComponentEventReturns a parameter string identifying this event. This method is useful for event-logging and for debugging.- Overrides:
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paramStringin classComponentEvent - Returns:
- a string identifying the event and its attributes
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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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