OpenJDK 27 · javax.swing.RepaintManager · APIdia, the JavaDoc alternative

Modifier and Type	Class and Description
private static class	RepaintManager.DisplayChangedHandler Listener installed to detect display changes.
private static class	RepaintManager.DisplayChangedRunnable
private static class	RepaintManager.DoubleBufferInfo
pack-priv static class	RepaintManager.PaintManager PaintManager is used to handle all double buffered painting for Swing.
private class	RepaintManager.ProcessingRunnable Runnable used to process all repaint/revalidate requests.

Field Summary

Modifier and Type	Field and Description
private static final short	BUFFER_STRATEGY_NOT_SPECIFIED
private static final short	BUFFER_STRATEGY_SPECIFIED_OFF
private static final short	BUFFER_STRATEGY_SPECIFIED_ON
private static final short	BUFFER_STRATEGY_TYPE
private short	bufferStrategyType Type of buffer strategy to use.
private Map<Component, Rectangle>	dirtyComponents
private static final DisplayChangedListener	displayChangedHandler Listener installed to detect display changes.
pack-priv boolean	doubleBufferingEnabled
private Dimension	doubleBufferMaxSize
pack-priv static final boolean	HANDLE_TOP_LEVEL_PAINT Whether or not the RepaintManager should handle paint requests for top levels.
private Map<Container, Rectangle>	hwDirtyComponents
private List<Component>	invalidComponents
private boolean	isCustomMaxBufferSizeSet
private static boolean	nativeDoubleBuffering Value of the system property awt.nativeDoubleBuffering.
private int	paintDepth Number of `beginPaint` that have been invoked.
private boolean	painting True if we're in the process of painting the dirty regions.
private RepaintManager.PaintManager	paintManager Object responsible for handling core paint functionality.
private Thread	paintThread The Thread that has initiated painting.
private final RepaintManager.ProcessingRunnable	processingRunnable Runnable used to process all repaint/revalidate requests.
private List<SwingUtilities2.RepaintListener>	repaintListeners
private static RepaintManager	repaintManager
private JComponent	repaintRoot If the PaintManager calls into repaintRoot during painting this field will be set to the root.
private List<Runnable>	runnableList
pack-priv RepaintManager.DoubleBufferInfo	standardDoubleBuffer
pack-priv Rectangle	tmp
private Map<Component, Rectangle>	tmpDirtyComponents
private static final int	VOLATILE_LOOP_MAX
private static final int	volatileBufferType Type of VolatileImage which should be used for double-buffered painting.
pack-priv static boolean	volatileImageBufferEnabled
private Map<GraphicsConfiguration, VolatileImage>	volatileMap Maps from GraphicsConfiguration to VolatileImage.

Access	Constructor and Description
public	RepaintManager() Create a new RepaintManager instance.
private	RepaintManager(short bufferStrategyType)

Method Summary

Modifier and Type	Method and Description
private Image	_getOffscreenBuffer(Component c, int proposedWidth, int proposedHeight)
public void	addDirtyRegion(JComponent Component to repaint, null results in nothing happening. c, int X coordinate of the region to repaint x, int Y coordinate of the region to repaint y, int Width of the region to repaint w, int Height of the region to repaint h) Add a component in the list of components that should be refreshed.
public void	addDirtyRegion(Window Window to repaint, null results in nothing happening. window, int X coordinate of the region to repaint x, int Y coordinate of the region to repaint y, int Width of the region to repaint w, int Height of the region to repaint h) Adds `window` to the list of `Component`s that need to be repainted.
private void	addDirtyRegion0(Container c, int x, int y, int w, int h) Add a component in the list of components that should be refreshed.
public synchronized void	addInvalidComponent(JComponent a component invalidComponent) Mark the component as in need of layout and queue a runnable for the event dispatching thread that will validate the components first isValidateRoot() ancestor.
private void	addRepaintListener(SwingUtilities2.RepaintListener l)
private void	adjustRoots(JComponent root, List<Component> roots, int index) Removes any components from roots that are children of root.
pack-priv void	beginPaint() Invoked prior to any paint/copyArea method calls.
private void	clearImages()
private void	clearImages(int width, int height)
pack-priv void	collectDirtyComponents(Map<Component, Rectangle> dirtyComponents, Component dirtyComponent, List<Component> roots)
pack-priv void	copyArea(JComponent c, Graphics g, int x, int y, int w, int h, int deltaX, int deltaY, boolean Whether or not the copyArea needs to be clipped to the Component's bounds. clip) Does a copy area on the specified region.
public static RepaintManager	Returns: the RepaintManager object currentManager(Component a Component -- unused in the default implementation, but could be used by an overridden version to return a different RepaintManager depending on the Component c) Return the RepaintManager given a Component.
public static RepaintManager	Returns: the RepaintManager object currentManager(JComponent a JComponent -- unused c) Return the RepaintManager for the calling thread given a JComponent.
private void	displayChanged()
pack-priv void	doubleBufferingChanged(JRootPane rootPane) Invoked when the doubleBuffered or useTrueDoubleBuffering properties of a JRootPane change.
pack-priv void	endPaint() Invoked after `beginPaint` has been invoked.
private synchronized boolean	Returns: false if `c` is not yet marked dirty. extendDirtyRegion(Component c, int x, int y, int w, int h) Extends the dirty region for the specified component to include the new region.
private RepaintManager	getDelegate(Component c)
public Rectangle	Returns: the region getDirtyRegion(JComponent a component aComponent) Return the current dirty region for a component.
public Dimension	Returns: a Dimension object representing the maximum size getDoubleBufferMaximumSize() Returns the maximum double buffer size.
public Image	Returns: the image getOffscreenBuffer(Component the component c, int the width of the buffer proposedWidth, int the height of the buffer proposedHeight) Return the offscreen buffer that should be used as a double buffer with the component `c`.
private synchronized RepaintManager.PaintManager	getPaintManager()
public Image	Returns: the volatile image getVolatileOffscreenBuffer(Component the component c, int the width of the buffer proposedWidth, int the height of the buffer proposedHeight) Return a volatile offscreen buffer that should be used as a double buffer with the specified component `c`.
public boolean	Returns: `true` if aComponent will be completely painted during the next paintDirtyRegions(). isCompletelyDirty(JComponent a component aComponent) Convenience method that returns true if aComponent will be completely painted during the next paintDirtyRegions().
public boolean	Returns: true if this object is double buffered isDoubleBufferingEnabled() Returns true if this RepaintManager is double buffered.
pack-priv boolean	isPainting()
private synchronized boolean	isPaintingThread() Returns true if the current thread is the thread painting.
public void	markCompletelyClean(JComponent a component aComponent) Mark a component completely clean.
public void	markCompletelyDirty(JComponent a component aComponent) Mark a component completely dirty.
pack-priv void	nativeAddDirtyRegion(Container c, int x, int y, int w, int h)
pack-priv void	nativeQueueSurfaceDataRunnable(final Component c, final Runnable r)
pack-priv void	notifyRepaintPerformed(JComponent the component c, int the x coordinate of the area x, int the y coordinate of the area y, int the width of the area w, int the height of the area h) Notify the attached repaint listeners that an area of the `c` component has been immediately repainted, that is without scheduling a repaint runnable, due to performing a "blit" (via calling the `copyArea` method).
pack-priv void	paint(JComponent Component to paint paintingComponent, JComponent Component to obtain buffer for bufferComponent, Graphics Graphics to paint to g, int X-coordinate x, int Y-coordinate y, int Width w, int Height h) Paints a region of a component
public void	paintDirtyRegions() Paint all of the components that have been marked dirty.
private void	paintDirtyRegions(final Map<Component, Rectangle> tmpDirtyComponents)
private void	prePaintDirtyRegions() This is invoked to process paint requests.
public synchronized void	removeInvalidComponent(JComponent a component component) Remove a component from the list of invalid components.
private void	removeRepaintListener(SwingUtilities2.RepaintListener l)
pack-priv void	resetDoubleBuffer() This resets the double buffer.
pack-priv void	resetVolatileDoubleBuffer(GraphicsConfiguration gc) This resets the volatile double buffer.
pack-priv void	scheduleHeavyWeightPaints()
private void	scheduleProcessingRunnable()
public static void	setCurrentManager(RepaintManager the RepaintManager object to use aRepaintManager) Set the RepaintManager.
public void	setDoubleBufferingEnabled(boolean true to activate double buffering aFlag) Enables or disables double buffering in this RepaintManager.
public void	setDoubleBufferMaximumSize(Dimension the dimension d) Set the maximum double buffer size.
pack-priv void	setPaintManager(RepaintManager.PaintManager The PaintManager to use. Passing in null indicates the fallback PaintManager should be used. paintManager) Sets the `PaintManager` that is used to handle all double buffered painting.
pack-priv boolean	show(Container c, int x, int y, int w, int h) If possible this will show a previously rendered portion of a Component.
public synchronized String	Returns: a String representation of this object toString() Overrides java.lang.Object.toString. Returns a string that displays and identifies this object's properties.
private void	updateWindows(Map<Component, Rectangle> dirtyComponents)
pack-priv boolean	useVolatileDoubleBuffer() Returns true if we should use the `Image` returned from `getVolatileOffscreenBuffer` to do double buffering.
public void	validateInvalidComponents() Validate all of the components that have been marked invalid.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll wait wait wait

public Class RepaintManager

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary