edu.umd.cs.piccolox.swing
Class PViewport

java.lang.Object
  java.awt.Component
      java.awt.Container
          javax.swing.JComponent
              javax.swing.JViewport
                  edu.umd.cs.piccolox.swing.PViewport

All Implemented Interfaces:

java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable, javax.accessibility.Accessible

public class PViewport
extends javax.swing.JViewport

A subclass of JViewport that talks to the scroll director to negotiate the view positions and sizes.

Author:

Lance Good

See Also:

Serialized Form

Nested Class Summary

static class

PViewport.PViewportLayout A simple layout manager to give the ZCanvas the same size as the Viewport

Nested classes/interfaces inherited from class javax.swing.JViewport

javax.swing.JViewport.AccessibleJViewport, javax.swing.JViewport.ViewListener

Nested classes/interfaces inherited from class javax.swing.JComponent

javax.swing.JComponent.AccessibleJComponent

Nested classes/interfaces inherited from class java.awt.Container

java.awt.Container.AccessibleAWTContainer

Nested classes/interfaces inherited from class java.awt.Component

java.awt.Component.AccessibleAWTComponent, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy

Field Summary

Fields inherited from class javax.swing.JViewport

backingStore, BACKINGSTORE_SCROLL_MODE, backingStoreImage, BLIT_SCROLL_MODE, isViewSizeSet, lastPaintPosition, scrollUnderway, SIMPLE_SCROLL_MODE

Fields inherited from class javax.swing.JComponent

accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

PViewport()
Pass constructor info to super

Method Summary

protected java.awt.LayoutManager	createLayoutManager() Subclassers can override this to install a different layout manager (or null) in the constructor.
protected PScrollDirector	createScrollDirector() Subclassers can override this to install a different scroll director in the constructor.
void	fireStateChanged() Notifies all ChangeListeners when the views size, position, or the viewports extent size has changed.
PScrollDirector	getScrollDirector()
java.awt.Point	getViewPosition() Gets the view position from the scroll director based on the current extent size
java.awt.Dimension	getViewSize() Gets the view size from the scroll director based on the current extent size
java.awt.Dimension	getViewSize(java.awt.geom.Rectangle2D r) Gets the view size from the scroll director based on the specified extent size
void	setScrollDirector(PScrollDirector scrollDirector) Set the scroll director on this viewport
void	setView(java.awt.Component view) Overridden to throw an exception if the view is not a ZCanvas
void	setViewPosition(java.awt.Point p) Sets the view coordinates that appear in the upper left hand corner of the viewport, does nothing if there's no view.

Methods inherited from class javax.swing.JViewport

addChangeListener, addImpl, computeBlit, createViewListener, firePropertyChange, getAccessibleContext, getChangeListeners, getExtentSize, getInsets, getInsets, getScrollMode, getUI, getUIClassID, getView, getViewRect, isBackingStoreEnabled, isOptimizedDrawingEnabled, paint, paramString, remove, removeChangeListener, repaint, reshape, scrollRectToVisible, setBackingStoreEnabled, setBorder, setExtentSize, setScrollMode, setUI, setViewSize, toViewCoordinates, toViewCoordinates, updateUI

Methods inherited from class javax.swing.JComponent

addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, revalidate, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusBackward, transferFocusDownCycle, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusUpCycle

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

PViewport

public PViewport()

Pass constructor info to super

Method Detail

createLayoutManager

protected java.awt.LayoutManager createLayoutManager()

Subclassers can override this to install a different layout manager (or null) in the constructor. Returns a new ViewportLayout object.

Overrides:

createLayoutManager in class javax.swing.JViewport

Returns:

a LayoutManager

createScrollDirector

protected PScrollDirector createScrollDirector()

Subclassers can override this to install a different scroll director in the constructor. Returns a new PScrollDirector object.

Returns:

a PScrollDirector

setScrollDirector

public void setScrollDirector(PScrollDirector scrollDirector)

Set the scroll director on this viewport

Parameters:

scrollDirector - The new scroll director

getScrollDirector

public PScrollDirector getScrollDirector()

Returns:

The scroll director on this viewport

setView

public void setView(java.awt.Component view)

Overridden to throw an exception if the view is not a ZCanvas

Overrides:

setView in class javax.swing.JViewport

Parameters:

view - The new view - it better be a ZCanvas!

setViewPosition

public void setViewPosition(java.awt.Point p)

Sets the view coordinates that appear in the upper left hand corner of the viewport, does nothing if there's no view.

Overrides:

setViewPosition in class javax.swing.JViewport

Parameters:

p - a Point object giving the upper left coordinates

getViewPosition

public java.awt.Point getViewPosition()

Gets the view position from the scroll director based on the current extent size

Overrides:

getViewPosition in class javax.swing.JViewport

Returns:

The new view position

getViewSize

public java.awt.Dimension getViewSize()

Gets the view size from the scroll director based on the current extent size

Overrides:

getViewSize in class javax.swing.JViewport

Returns:

The new view size

getViewSize

public java.awt.Dimension getViewSize(java.awt.geom.Rectangle2D r)

Gets the view size from the scroll director based on the specified extent size

Parameters:

r - The extent size from which the view is computed

Returns:

The new view size

fireStateChanged

public void fireStateChanged()

Notifies all ChangeListeners when the views size, position, or the viewports extent size has changed.

Overrides:

fireStateChanged in class javax.swing.JViewport