PaintEventDispatcher

extends Object

java.lang.Object
↳	sun.awt.PaintEventDispatcher

Class Overview

PaintEventDispatcher is responsible for dispatching PaintEvents. There can be only one PaintEventDispatcher active at a particular time.

Summary

Public Constructors
	PaintEventDispatcher()

Public Methods
PaintEvent	createPaintEvent(Component target, int x, int y, int w, int h) Creates and returns the `PaintEvent` that should be dispatched for the specified component.
static PaintEventDispatcher	getPaintEventDispatcher() Returns the currently active `PaintEventDispatcher`.
boolean	queueSurfaceDataReplacing(Component c, Runnable r) This method is invoked from the toolkit thread when the surface data of the component needs to be replaced.
static void	setPaintEventDispatcher(PaintEventDispatcher dispatcher) Sets the current `PaintEventDispatcher`.
boolean	shouldDoNativeBackgroundErase(Component c) Returns true if a native background erase should be done for the specified Component.

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Inherited Methods

From class java.lang.Object

Object	clone() Creates and returns a copy of this object.
boolean	equals(Object obj) Indicates whether some other object is "equal to" this one.
void	finalize() Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
final Class<?>	getClass() Returns the runtime class of this `Object`.
int	hashCode() Returns a hash code value for the object.
final void	notify() Wakes up a single thread that is waiting on this object's monitor.
final void	notifyAll() Wakes up all threads that are waiting on this object's monitor.
String	toString() Returns a string representation of the object.
final void	wait() Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.
final void	wait(long timeout, int nanos) Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
final void	wait(long timeout) Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.

Public Constructors

public PaintEventDispatcher ()

Public Methods

public PaintEvent createPaintEvent (Component target, int x, int y, int w, int h)

Creates and returns the PaintEvent that should be dispatched for the specified component. If this returns null no PaintEvent is dispatched.

WARNING: This is invoked from the native thread, be careful what methods you end up invoking here.

public static PaintEventDispatcher getPaintEventDispatcher ()

Returns the currently active PaintEventDispatcher. This will never return null.

Returns

PaintEventDispatcher

public boolean queueSurfaceDataReplacing (Component c, Runnable r)

This method is invoked from the toolkit thread when the surface data of the component needs to be replaced. The method run() of the Runnable argument performs surface data replacing, run() should be invoked on the EDT of this component's AppContext. Returns true if the Runnable has been enqueued to be invoked on the EDT. (Fix 6255371.)

public static void setPaintEventDispatcher (PaintEventDispatcher dispatcher)

Sets the current PaintEventDispatcher.

Parameters

dispatcher	PaintEventDispatcher

public boolean shouldDoNativeBackgroundErase (Component c)

Returns true if a native background erase should be done for the specified Component.

Interfaces

Classes

Enums

Exceptions