Class javax.swing.JViewport

Changed Constructors
JViewport(void)	Documentation changed from old to new.	Creates a JViewport.

 

Added Methods
int getScrollMode()	Returns the current scrolling mode.
ViewportUI getUI()	Returns the L&F object that renders this component.
void setScrollMode(int)	Used to control the method of scrolling the viewport contents.
void setUI(ViewportUI)	Sets the L&F object that renders this component.

 

Changed Methods
void addChangeListener(ChangeListener)	Documentation changed from old to new.	Adds a ChangeListener to the list that is notified each time the view's size position or the viewport's extent size has changed.
void addImpl(Component, Object, int)	Documentation changed from old to new.	Sets the JViewports one lightweight child which can be null.
boolean computeBlit(int, int, Point, Point, Dimension, Rectangle)	Documentation changed from old to new.	Computes the parameters for a blit where the backing store image currently contains oldLoc in the upper left hand corner and we're scrolling to newLoc.
LayoutManager createLayoutManager()	Documentation changed from old to new.	Subclassers can override this to install a different layout manager (or null) in the constructor.
ViewListener createViewListener()	Documentation changed from old to new.	Creates a listener for the view.
void fireStateChanged()	Documentation changed from old to new.	Notifies all ChangeListeners when the views size position or the viewports extent size has changed.
AccessibleContext getAccessibleContext()	Documentation changed from old to new.	Gets the AccessibleContext associated with this JViewport.
Dimension getExtentSize()	Documentation changed from old to new.	Returns the size of the visible part of the view in view coordinates.
String getUIClassID()	Documentation changed from old to new. Method was inherited from JComponent, but is now defined locally.	Returns a string that specifies the name of the L&F class that renders this component.
Component getView()	Documentation changed from old to new.	Returns the JViewports one child or null.
Point getViewPosition()	Documentation changed from old to new.	Returns the view coordinates that appear in the upper left hand corner of the viewport or 0 0 if there's no view.
Rectangle getViewRect()	Documentation changed from old to new.	Returns a rectangle whose origin is getViewPosition and size is getExtentSize.
Dimension getViewSize()	Documentation changed from old to new.	If the view's size hasn't been explicitly set return the preferred size otherwise return the view's current size.
boolean isBackingStoreEnabled()	Documentation changed from old to new. Now deprecated.	As of Java 2 platform v1.3, replaced by getScrollMode().
boolean isOptimizedDrawingEnabled()	Documentation changed from old to new.	The JViewport overrides the default implementation of this method (in JComponent) to return false.
void paint(Graphics)	Documentation changed from old to new.	Depending on whether the backingStore is enabled either paint the image through the backing store or paint just the recently exposed part using the backing store to "blit" the remainder.
String paramString()	Documentation changed from old to new.	Returns a string representation of this JViewport.
void removeChangeListener(ChangeListener)	Documentation changed from old to new.	Removes a ChangeListener from the list that's notified each time the views size position or the viewports extent size has changed.
void reshape(int, int, int, int)	Documentation changed from old to new.	Sets the bounds of this viewport.
void scrollRectToVisible(Rectangle)	Documentation changed from old to new.	Overridden to scroll the view so that Rectangle within the view becomes visible.
void setBackingStoreEnabled(boolean)	Documentation changed from old to new. Now deprecated.	As of Java 2 platform v1.3, replaced by setScrollMode().
void setBorder(Border)	Documentation changed from old to new.	The viewport "scrolls" it's child (called the "view") by the normal parent/child clipping (typically the view is moved in the opposite direction of the scroll).
void setExtentSize(Dimension)	Documentation changed from old to new.	Sets the size of the visible part of the view using view coordinates.
void setView(Component)	Documentation changed from old to new.	Sets the JViewports one lightweight child (view) which can be null.
void setViewPosition(Point)	Documentation changed from old to new.	Sets the view coordinates that appear in the upper left hand corner of the viewport does nothing if there's no view.
void setViewSize(Dimension)	Documentation changed from old to new.	Sets the view coordinates that appear in the upper left hand corner of the viewport and the size of the view.
void updateUI()	Documentation changed from old to new. Method was inherited from JComponent, but is now defined locally.	Notification from the UIFactory that the L&F has changed.
void firePropertyChange(String, Object, Object)	Documentation changed from old to new.	Notifies listeners of a property change.
Insets getInsets()	Documentation changed from old to new.	Returns the insets (border) dimensions as (0 0 0 0) since borders are not supported on a JViewport.
Insets getInsets(Insets)	Documentation changed from old to new.	Returns an Insets object containing this JViewports inset values.
void remove(Component)	Documentation changed from old to new.	Removes the Viewports one lightweight child.
void repaint(long, int, int, int, int)	Documentation changed from old to new.	Always repaint in the parents coordinate system to make sure only one paint is performed by the RepaintManager.
Dimension toViewCoordinates(Dimension)	Documentation changed from old to new.	Converts a size in pixel coordinates to view coordinates.
Point toViewCoordinates(Point)	Documentation changed from old to new.	Converts a point in pixel coordinates to view coordinates.

 

Added Fields
int BACKINGSTORE_SCROLL_MODE	Draws viewport contents into an offscreen image.
int BLIT_SCROLL_MODE	Use graphics.copyArea() to implement scrolling.
int SIMPLE_SCROLL_MODE	This mode uses the very simple method of redrawing the entire contents of the scrollpane each time it is scrolled.

 

Changed Fields
boolean backingStore	Documentation changed from old to new. Now deprecated.	As of Java 2 platform v1.3
boolean isViewSizeSet	Documentation changed from old to new.	True when the viewport dimensions have been determined.
Point lastPaintPosition	Documentation changed from old to new.	The last viewPosition that we've painted so we know how much of the backing store image is valid.
boolean scrollUnderway	Documentation changed from old to new.	The scrollUnderway flag is used for components like JList.