com.lizardtech.djview
Class Applet

java.lang.Object
  java.awt.Component
      java.awt.Container
          java.awt.Panel
              java.applet.Applet
                  com.lizardtech.djview.Applet

All Implemented Interfaces:

java.awt.image.ImageObserver, java.awt.MenuContainer, java.beans.PropertyChangeListener, java.io.Serializable, java.lang.Runnable, java.util.EventListener, javax.accessibility.Accessible

Direct Known Subclasses:

DjVuApplet

public class Applet
extends java.applet.Applet
implements java.beans.PropertyChangeListener, java.lang.Runnable

A class for displaying djvu documents. Very simmular to the LizardTech DjVu plugin.

Version:

$Revision: 1.20 $

Author:

Bill C. Riemers

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.applet.Applet

java.applet.Applet.AccessibleApplet

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

java.awt.Panel.AccessibleAWTPanel

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

java.awt.CardLayout	cardLayout The cardlayout which displays either the image or the hidden text.
protected Document	document The current document being displayed.
protected boolean	first True until the first time the mouse is moved over the applet.
static int	FIT_PAGE Magic scale value used to zoom to fit page.
static int	FIT_WIDTH Magic scale value used to zoom to fit width.
static java.lang.String	IMAGE_STRING Constant string indicating the image should be displayed.
java.lang.String	jarName The jar file which we should run, if main is invoked.
java.lang.String	mainClass The main class to use, if main is invoked and the jar file is not available.
protected int	scale The current zoom factor.
protected java.awt.Container	scrollPane This container will contain a scrollable DjVu Image
static java.lang.String	TEXT_STRING Constant string indicating the hidden text should be displayed.
protected java.net.URL	url The current URL being displayed.
protected boolean	useScrollPane True if a scrollpane should be used.

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

Applet()
Creates a new Applet object.

Method Summary

java.awt.CardLayout	getCardLayout() Query and/or create the cardlayout for displaying text or image.
java.awt.Container	getCenterPane() Query and/or create the center pane.
DjVuBean	getDjVuBean() Query and/or create the DjVuBean being displayed.
java.lang.String[][]	getParameterInfo() Method to obtain an array of parameters accepted by this applet.
java.awt.Component	getScrollPane() Query and/or create the component to use as scroll pane by the DjVuBean.
java.awt.Component	getSplitPane(java.awt.Component leftPane, java.awt.Component centerPane) Called to create a split pane for displaying outline navigation along side of the DjVuBean.
java.net.URL	getURL() Query the URL displayed by this applet.
void	init() Initialize the currently selected url, and render the first page of the document.
boolean	isValidDjVu() Query if a DjVu document has been successfully initialized.
static void	main(java.lang.String[] args) This applet may also be invoked as a program using javaw.
void	propertyChange(java.beans.PropertyChangeEvent event) Called when a DjVuBean propery has changed.
void	run() Perform regular garbage collection...
void	setURL(java.net.URL url) Set the url to be rendered.

Methods inherited from class java.applet.Applet

destroy, getAccessibleContext, getAppletContext, getAppletInfo, getAudioClip, getAudioClip, getCodeBase, getDocumentBase, getImage, getImage, getLocale, getParameter, isActive, newAudioClip, play, play, resize, resize, setStub, showStatus, start, stop

Methods inherited from class java.awt.Panel

addNotify

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getInsets, getLayout, getListeners, getMaximumSize, getMinimumSize, getMousePosition, getPreferredSize, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paint, paintComponents, paramString, preferredSize, print, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, removeNotify, setComponentZOrder, setFocusCycleRoot, setFocusTraversalKeys, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setFont, setLayout, transferFocusBackward, transferFocusDownCycle, update, 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, contains, createImage, createImage, createVolatileImage, createVolatileImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocation, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, printAll, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, reshape, setBackground, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeysEnabled, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setMaximumSize, setMinimumSize, setName, setPreferredSize, setSize, setSize, setVisible, show, show, size, toString, transferFocus, transferFocusUpCycle

Methods inherited from class java.lang.Object

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

Field Detail

FIT_WIDTH

public static final int FIT_WIDTH

Magic scale value used to zoom to fit width.

See Also:

Constant Field Values

FIT_PAGE

public static final int FIT_PAGE

Magic scale value used to zoom to fit page.

See Also:

Constant Field Values

IMAGE_STRING

public static final java.lang.String IMAGE_STRING

Constant string indicating the image should be displayed.

See Also:

Constant Field Values

TEXT_STRING

public static final java.lang.String TEXT_STRING

Constant string indicating the hidden text should be displayed.

See Also:

Constant Field Values

jarName

public final java.lang.String jarName

The jar file which we should run, if main is invoked.

See Also:

Constant Field Values

mainClass

public final java.lang.String mainClass

The main class to use, if main is invoked and the jar file is not available.

See Also:

Constant Field Values

cardLayout

public java.awt.CardLayout cardLayout

The cardlayout which displays either the image or the hidden text.

scrollPane

protected java.awt.Container scrollPane

This container will contain a scrollable DjVu Image

document

protected Document document

The current document being displayed.

url

protected java.net.URL url

The current URL being displayed.

first

protected boolean first

True until the first time the mouse is moved over the applet.

useScrollPane

protected boolean useScrollPane

True if a scrollpane should be used. This is intended for debug purposes.

scale

protected int scale

The current zoom factor.

Constructor Detail

Applet

public Applet()

Creates a new Applet object.

Method Detail

main

public static void main(java.lang.String[] args)

This applet may also be invoked as a program using javaw. In that event we first try running a jar file. If that fails we try the mainClass.

Parameters:

args - Should contain the target URL to view.

getCardLayout

public java.awt.CardLayout getCardLayout()
                                  throws java.io.IOException

Query and/or create the cardlayout for displaying text or image.

Returns:

the cardlayout.

Throws:

java.io.IOException - if an error occures decoding the document

getCenterPane

public java.awt.Container getCenterPane()
                                 throws java.io.IOException

Query and/or create the center pane.

Returns:

the center pane.

Throws:

java.io.IOException - if an error occures decoding the document

getDjVuBean

public DjVuBean getDjVuBean()
                     throws java.io.IOException

Query and/or create the DjVuBean being displayed.

Returns:

the DjVuBean.

Throws:

java.io.IOException - if an error occures decoding the document

getParameterInfo

public java.lang.String[][] getParameterInfo()

Method to obtain an array of parameters accepted by this applet.

Overrides:

getParameterInfo in class java.applet.Applet

Returns:

array of parameters accepted by this applet.

getScrollPane

public java.awt.Component getScrollPane()
                                 throws java.io.IOException

Query and/or create the component to use as scroll pane by the DjVuBean.

Returns:

the component to use as a scroll pane.

Throws:

java.io.IOException - if an error occures decoding the document

getSplitPane

public java.awt.Component getSplitPane(java.awt.Component leftPane,
                                       java.awt.Component centerPane)

Called to create a split pane for displaying outline navigation along side of the DjVuBean.

Parameters:

leftPane - outline navigation.

centerPane - DjVuBean.

Returns:

the component to display.

setURL

public void setURL(java.net.URL url)

Set the url to be rendered. The page will not be updated until init() is called.

Parameters:

url - to render.

getURL

public java.net.URL getURL()

Query the URL displayed by this applet.

Returns:

URL to display.

isValidDjVu

public boolean isValidDjVu()

Query if a DjVu document has been successfully initialized.

Returns:

True if init() was successfull.

init

public void init()

Initialize the currently selected url, and render the first page of the document.

Overrides:

init in class java.applet.Applet

propertyChange

public void propertyChange(java.beans.PropertyChangeEvent event)

Called when a DjVuBean propery has changed.

Specified by:

propertyChange in interface java.beans.PropertyChangeListener

Parameters:

event - describing the property change.

run

public void run()

Perform regular garbage collection...

Specified by:

run in interface java.lang.Runnable