com.lizardtech.djvubean
Class DjVuViewport

java.lang.Object
  java.awt.Component
      java.awt.Container
          java.awt.Panel
              com.lizardtech.djvubean.DjVuBean
                  com.lizardtech.djvubean.DjVuViewport

All Implemented Interfaces:

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

public class DjVuViewport
extends DjVuBean
implements java.awt.event.AdjustmentListener

This extension to DjVuBean allows a DjVuPage to be viewed without the need for a ScrollPane or JScrollPane. The main this class should be used is to avoid the annoying flicker caused by ScrollPane repainting the screen when JScrollPane is not available. This panel will not render the scrollbars. Instead the scrollbars should be rendered in a parent component.

Version:

$Revision: 1.7 $

Author:

Bill C. Riemers

See Also:

Serialized Form

Nested Class Summary

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

Fields inherited from class com.lizardtech.djvubean.DjVuBean

FIRST_PAGE, FIT_PAGE, FIT_WIDTH, getImageThread, image, LAST_MODE, LAST_PAGE, MATCH_CASE_MASK, mlistener, NAVIGATE_LIST, NEXT_PAGE, PAN_MODE, PREV_PAGE, properties, SEARCH_BACKWARD_MASK, TEXT_MODE, WHOLE_DOCUMENT_MASK, WHOLE_WORD_MASK, zoom, ZOOM_BUTTON_LIST, ZOOM_FIT_PAGE, ZOOM_FIT_WIDTH, ZOOM_IN, ZOOM_MODE, ZOOM_ONE_TO_ONE, ZOOM_OUT, ZOOM_SPECIAL_LIST, ZOOM_STANDARD_LIST, ZOOM_STRETCH, ZOOM100, ZOOM150, ZOOM25, ZOOM300, ZOOM50, ZOOM75

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

DjVuViewport()
Creates a new DjVuViewport object.

Method Summary

void	adjustmentValueChanged(java.awt.event.AdjustmentEvent event) Called to process scrollbar events.
java.awt.Dimension	getMaximumSize() Query the maximum panel size.
java.awt.Dimension	getMinimumSize() Query the minimum panel size.
java.awt.Dimension	getPreferredSize() Query the preferred panel size.
java.awt.Scrollbar	getScrollbar(int orientation) Query the a scrollbar component.
java.awt.Point	getScrollPosition() Query the current scroll position.
java.awt.Dimension	getViewportSize() Query the size of this panel.
void	paint(java.awt.Graphics g) Called to redraw the panel.
void	paintComponent(java.awt.Graphics g) Called to draw the panel.
protected void	processEvent(java.awt.AWTEvent event) Called to process events.
void	run()
void	setImageSize(int width, int height) Adjust the image scale.
void	setScrollbar(int orientation, java.awt.Scrollbar scrollbar) Set either the horizontal or vertical scrollbar.
void	setScrollPosition(int x, int y) Set the scroll position.
void	setSize(int width, int height) Set the size of this panel.
void	setURL(java.net.URL url) Called to set the URL to browse, and reset the scrollbars.
void	setViewportSize(int width, int height) Set the size of this panel.

Methods inherited from class com.lizardtech.djvubean.DjVuBean

addPropertyChangeListener, createAddOn, getCaretPosition, getDjVuOptions, getDocument, getDPI, getImage, getImageWait, getLastMode, getMaximumPanelSize, getMinimumPanelSize, getMode, getOutline, getPage, getPageCount, getPreferredPanelSize, getProperties, getSearchMask, getSearchText, getSelect, getStatus, getTargetWidth, getText, getTextArea, getTextCodec, getTextSearchObject, getToolbar, getURL, getXScale, getYScale, getZoom, imageUpdate, invokeMethod, invokeParentsMethod, isDecoding, isOpaque, propertyChange, recursiveRevalidate, removePropertyChangeListener, repaintImageCoordinates, scaleScrollPosition, setBackground, setCaretPosition, setDjVuOptions, setImage, setImageSize, setMode, setMode, setPage, setPageString, setPanelSize, setPanelSize, setProperties, setPropertyName, setScrollPosition, setSearchMask, setSearchText, setSelect, setSelectionList, setSize, setStatus, setSubmit, setTargetWidth, setViewportSize, setZoom, stringToBoolean, update, validate, zoomSelect

Methods inherited from class java.awt.Panel

addNotify, getAccessibleContext

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getInsets, getLayout, getListeners, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, paramString, preferredSize, print, printComponents, processContainerEvent, remove, remove, removeAll, removeContainerListener, removeNotify, setComponentZOrder, setFocusCycleRoot, setFocusTraversalKeys, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setFont, setLayout, transferFocusBackward, transferFocusDownCycle, 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, getLocale, getLocation, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, inside, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, 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, printAll, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, reshape, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeysEnabled, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setMaximumSize, setMinimumSize, setName, setPreferredSize, setVisible, 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

DjVuViewport

public DjVuViewport()

Creates a new DjVuViewport object.

Method Detail

setImageSize

public void setImageSize(int width,
                         int height)

Adjust the image scale.

Overrides:

setImageSize in class DjVuBean

Parameters:

width - to scale the image to.

height - to scale the image to.

getMaximumSize

public java.awt.Dimension getMaximumSize()

Query the maximum panel size.

Overrides:

getMaximumSize in class DjVuBean

Returns:

maximum panel size.

getMinimumSize

public java.awt.Dimension getMinimumSize()

Query the minimum panel size.

Overrides:

getMinimumSize in class DjVuBean

Returns:

minimum panel size.

getPreferredSize

public java.awt.Dimension getPreferredSize()

Query the preferred panel size.

Overrides:

getPreferredSize in class DjVuBean

Returns:

preferred panel size.

setScrollPosition

public void setScrollPosition(int x,
                              int y)

Set the scroll position.

Overrides:

setScrollPosition in class DjVuBean

Parameters:

x - coordinate of upper left corner.

y - coordinate of upper left corner.

getScrollPosition

public java.awt.Point getScrollPosition()

Query the current scroll position.

Overrides:

getScrollPosition in class DjVuBean

Returns:

location of upper left corner.

setScrollbar

public void setScrollbar(int orientation,
                         java.awt.Scrollbar scrollbar)

Set either the horizontal or vertical scrollbar.

Parameters:

orientation - either Scrollbar.HORIZONTAL or Scrollbar.VERTICAL

scrollbar - component.

getScrollbar

public java.awt.Scrollbar getScrollbar(int orientation)

Query the a scrollbar component.

Parameters:

orientation - either Scrollbar.HORIZONTAL or Scrollbar.VERTICAL

Returns:

scrollbar component.

setSize

public void setSize(int width,
                    int height)

Set the size of this panel.

Overrides:

setSize in class DjVuBean

Parameters:

width - of this panel.

height - of this panel.

setURL

public void setURL(java.net.URL url)
            throws java.io.IOException

Called to set the URL to browse, and reset the scrollbars.

Overrides:

setURL in class DjVuBean

Parameters:

url - indicates document to view.

Throws:

java.io.IOException - if an error occures

setViewportSize

public void setViewportSize(int width,
                            int height)

Set the size of this panel.

Overrides:

setViewportSize in class DjVuBean

Parameters:

width - of this panel.

height - of this panel.

getViewportSize

public java.awt.Dimension getViewportSize()

Query the size of this panel.

Overrides:

getViewportSize in class DjVuBean

Returns:

the panel size.

adjustmentValueChanged

public void adjustmentValueChanged(java.awt.event.AdjustmentEvent event)

Called to process scrollbar events.

Specified by:

adjustmentValueChanged in interface java.awt.event.AdjustmentListener

Parameters:

event - to process.

paint

public void paint(java.awt.Graphics g)

Called to redraw the panel.

Overrides:

paint in class DjVuBean

Parameters:

g - Graphics device to draw the panel to.

paintComponent

public void paintComponent(java.awt.Graphics g)

Called to draw the panel.

Overrides:

paintComponent in class DjVuBean

Parameters:

g - Graphics device to draw the panel to.

processEvent

protected void processEvent(java.awt.AWTEvent event)

Called to process events. Mouse events will be rewritten to indicate the position in the document clicked, instead of the position of the panel.

Overrides:

processEvent in class java.awt.Container

Parameters:

event - to process.

run

public void run()

Specified by:

run in interface java.lang.Runnable

Overrides:

run in class DjVuBean