vis.beans.plotter
Class Viewport

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--javax.swing.JComponent
                    |
                    +--vis.beans.plotter.Viewport

All Implemented Interfaces:

java.beans.beancontext.BeanContextChild, java.beans.beancontext.BeanContextServiceRevokedListener, java.beans.beancontext.BeanContextServicesListener, java.util.EventListener, java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable

Direct Known Subclasses:

PieChart, PlotViewport

public abstract class Viewport

extends javax.swing.JComponent

implements java.io.Serializable, java.beans.beancontext.BeanContextChild, java.beans.beancontext.BeanContextServicesListener

The Viewport class provides the basic functionality to draw on a viewport.

Version:

1.2 13 Nov 1999

Author:

Larry Rodrigues

See Also:

Serialized Form

Inner classes inherited from class javax.swing.JComponent

javax.swing.JComponent.AccessibleJComponent

Inner classes inherited from class java.awt.Container

java.awt.Container.AccessibleAWTContainer

Inner classes inherited from class java.awt.Component

java.awt.Component.AccessibleAWTComponent

Field Summary

protected java.awt.Graphics2D	destGc
protected java.awt.image.BufferedImage	destImage
protected int	height
protected java.awt.Graphics2D	offScrGc
protected java.awt.image.BufferedImage	offScrImage
protected java.awt.Image	pixImage
protected java.beans.beancontext.BeanContext	plBeanContext
protected int	width
protected double	xMagFac
protected double	xScaleFac
protected double	yMagFac
protected double	yScaleFac

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

Viewport()

Viewport(int wid, int ht)
Viewport Constructor.

Method Summary

void	addPropertyChangeListener(java.lang.String name, java.beans.PropertyChangeListener p)
void	addVetoableChangeListener(java.lang.String name, java.beans.VetoableChangeListener p)
void	createOffScrImage() Creates an OffScreen image.
abstract void	draw() All sub classes have to implement this method.
java.beans.beancontext.BeanContext	getBeanContext()
void	imagePaint(java.awt.Image img, java.awt.Point st, java.awt.Dimension d) Paints an image within a given rectangle which can be placed anywhere in the viewport It is the responsibilty of the caller to check whether the image is loaded.
java.lang.Object	invokePrinterService()
java.lang.Object	invokeSaveImageService()
void	paintComponent(java.awt.Graphics paintGc) Called by the system whenever the visibility status of the viewport changes.
void	removePropertyChangeListener(java.lang.String name, java.beans.PropertyChangeListener p)
void	removeVetoableChangeListener(java.lang.String name, java.beans.VetoableChangeListener p)
void	serviceAvailable(java.beans.beancontext.BeanContextServiceAvailableEvent sae)
void	serviceRevoked(java.beans.beancontext.BeanContextServiceRevokedEvent bcsre)
void	setBeanContext(java.beans.beancontext.BeanContext bc)
void	setOffScrGc() Sets off screen graphics context.
void	setWidHt(int wd, int hgt) Sets width and height.

Methods inherited from class javax.swing.JComponent

addAncestorListener, addNotify, addPropertyChangeListener, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getAccessibleContext, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAutoscrolls, getBorder, getBounds, getClientProperty, getComponentGraphics, getConditionForKeyStroke, getDebugGraphicsOptions, getGraphics, getHeight, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getUIClassID, getVerifyInputWhenFocusTarget, getVisibleRect, getWidth, getX, getY, grabFocus, hasFocus, hide, isDoubleBuffered, isFocusCycleRoot, isFocusTraversable, isLightweightComponent, isManagingFocus, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isPreferredSizeSet, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintImmediately, paintImmediately, paramString, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processFocusEvent, processKeyBinding, processKeyEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removePropertyChangeListener, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setDebugGraphicsOptions, setDoubleBuffered, setEnabled, setFont, setForeground, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update, updateUI

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getLayout, insets, invalidate, isAncestorOf, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setLayout, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, getBackground, getBounds, getColorModel, getComponentOrientation, getCursor, getDropTarget, getFont, getFontMetrics, getForeground, getGraphicsConfiguration, getInputContext, getInputMethodRequests, getLocale, getLocation, getLocationOnScreen, getName, getParent, getPeer, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, imageUpdate, inside, isDisplayable, isEnabled, isLightweight, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus

Methods inherited from class java.lang.Object

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

Field Detail

width

protected int width

height

protected int height

xScaleFac

protected double xScaleFac

yScaleFac

protected double yScaleFac

xMagFac

protected double xMagFac

yMagFac

protected double yMagFac

offScrImage

protected transient java.awt.image.BufferedImage offScrImage

destImage

protected transient java.awt.image.BufferedImage destImage

offScrGc

protected transient java.awt.Graphics2D offScrGc

destGc

protected transient java.awt.Graphics2D destGc

pixImage

protected transient java.awt.Image pixImage

plBeanContext

protected java.beans.beancontext.BeanContext plBeanContext

Constructor Detail

Viewport

public Viewport(int wid,
                int ht)

Viewport Constructor.

Parameters:

wd - the width of the viewport.

ht - the height of the viewport.

Viewport

public Viewport()

Method Detail

setWidHt

public void setWidHt(int wd,
                     int hgt)

Sets width and height.

Parameters:

wd - the width of the viewport.

ht - the height of the viewport.

createOffScrImage

public void createOffScrImage()

Creates an OffScreen image.

setOffScrGc

public void setOffScrGc()

Sets off screen graphics context.

imagePaint

public void imagePaint(java.awt.Image img,
                       java.awt.Point st,
                       java.awt.Dimension d)

Paints an image within a given rectangle which can be placed anywhere in the viewport It is the responsibilty of the caller to check whether the image is loaded.

Parameters:

img - the image to be painted

st - the point on the image corresponding to upper left hand corner(ULHC) of the rectangle

d - the dimension of the rectangle in which the image is drawn

paintComponent

public void paintComponent(java.awt.Graphics paintGc)

Called by the system whenever the visibility status of the viewport changes.

Overrides:

paintComponent in class javax.swing.JComponent

draw

public abstract void draw()

All sub classes have to implement this method.

serviceRevoked

public void serviceRevoked(java.beans.beancontext.BeanContextServiceRevokedEvent bcsre)

Specified by:

serviceRevoked in interface java.beans.beancontext.BeanContextServiceRevokedListener

serviceAvailable

public void serviceAvailable(java.beans.beancontext.BeanContextServiceAvailableEvent sae)

Specified by:

serviceAvailable in interface java.beans.beancontext.BeanContextServicesListener

setBeanContext

public void setBeanContext(java.beans.beancontext.BeanContext bc)
                    throws java.beans.PropertyVetoException

Specified by:

setBeanContext in interface java.beans.beancontext.BeanContextChild

getBeanContext

public java.beans.beancontext.BeanContext getBeanContext()

Specified by:

getBeanContext in interface java.beans.beancontext.BeanContextChild

invokeSaveImageService

public java.lang.Object invokeSaveImageService()

invokePrinterService

public java.lang.Object invokePrinterService()

addPropertyChangeListener

public void addPropertyChangeListener(java.lang.String name,
                                      java.beans.PropertyChangeListener p)

Specified by:

addPropertyChangeListener in interface java.beans.beancontext.BeanContextChild

Overrides:

addPropertyChangeListener in class javax.swing.JComponent

removePropertyChangeListener

public void removePropertyChangeListener(java.lang.String name,
                                         java.beans.PropertyChangeListener p)

Specified by:

removePropertyChangeListener in interface java.beans.beancontext.BeanContextChild

Overrides:

removePropertyChangeListener in class javax.swing.JComponent

addVetoableChangeListener

public void addVetoableChangeListener(java.lang.String name,
                                      java.beans.VetoableChangeListener p)

Specified by:

addVetoableChangeListener in interface java.beans.beancontext.BeanContextChild

removeVetoableChangeListener

public void removeVetoableChangeListener(java.lang.String name,
                                         java.beans.VetoableChangeListener p)

Specified by:

removeVetoableChangeListener in interface java.beans.beancontext.BeanContextChild