Package org.loboevolution.pdf

Class ThumbPanel

java.lang.Object

java.awt.Component

java.awt.Container

javax.swing.JComponent

javax.swing.JPanel

org.loboevolution.pdf.ThumbPanel

All Implemented Interfaces:

ImageObserver, MenuContainer, Serializable, Runnable, Accessible, Scrollable

public class ThumbPanel
extends JPanel
implements Runnable, Scrollable, ImageObserver

A panel of thumbnails, one for each page of a PDFFile. You can add a PageChangeListener to be informed of when the user clicks one of the pages.

See Also:

• Serialized Form

Nested Class Summary

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

JPanel.AccessibleJPanel

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

JComponent.AccessibleJComponent

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

Container.AccessibleAWTContainer

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

Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy

Field Summary

Fields inherited from class javax.swing.JComponent

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

accessibleContext, 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

Constructors

Constructor	Description
ThumbPanel(PDFFile file)	Creates a new ThumbPanel based on a PDFFile.

Method Summary

Modifier and Type	Method	Description
void	addPageChangeListener(PageChangeListener pl)	Adds a PageChangeListener to receive notification of page clicks.
Dimension	getPreferredScrollableViewportSize()
int	getScrollableBlockIncrement(Rectangle visrect, int orientation, int direction)
boolean	getScrollableTracksViewportHeight()
boolean	getScrollableTracksViewportWidth()
int	getScrollableUnitIncrement(Rectangle visrect, int orientation, int direction)
void	handleClick(int x, int y)	Handles a mouse click in the panel.
boolean	imageUpdate(Image img, int infoflags, int x, int y, int width, int height)
void	pageShown(int pagenum)	Sets the currently viewed page, indicates it with a highlight border, and makes sure the thumbnail is visible.
void	paint(Graphics g)
void	removePageChangeListener()	Removes a PageChangeListener from the notification list.
void	run()
void	showPage(int pagenum)	Notifies the listeners that a page has been selected.
void	stop()	Stops the render thread.

Methods inherited from class javax.swing.JPanel

getAccessibleContext, getUI, getUIClassID, paramString, setUI, 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, getBaseline, getBaselineResizeBehavior, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, hide, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingOrigin, 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, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, 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, addImpl, 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, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, 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, 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, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, 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, requestFocus, requestFocus, requestFocusInWindow, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setMixingCutoutShape, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle

Methods inherited from class java.lang.Object

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

Constructor Details

ThumbPanel

public ThumbPanel(PDFFile file)

Creates a new ThumbPanel based on a PDFFile. The file may be null. Automatically starts rendering thumbnails for that file.

Parameters:

file - a PDFFile object.

Method Details

run

public void run()

Renders each of the pages in the PDFFile into a thumbnail. Preferentially works on the needdrawn thumbnail, otherwise, go in order.

Specified by:

run in interface Runnable

addPageChangeListener

public void addPageChangeListener(PageChangeListener pl)

Adds a PageChangeListener to receive notification of page clicks.

Parameters:

pl - a PageChangeListener object.

removePageChangeListener

public void removePageChangeListener()

Removes a PageChangeListener from the notification list.

stop

public void stop()

Stops the render thread. Be sure to call this before dropping a ThumbPanel.

handleClick

public void handleClick(int x,
 int y)

Handles a mouse click in the panel. Figures out which page was clicked, and calls showPage.

Parameters:

x - the x coordinate of the mouse click

y - the y coordinate of the mouse click

pageShown

public void pageShown(int pagenum)

Sets the currently viewed page, indicates it with a highlight border, and makes sure the thumbnail is visible.

Parameters:

pagenum - a Integer object.

showPage

public void showPage(int pagenum)

Notifies the listeners that a page has been selected. Performs the notification in the AWT thread. Also highlights the selected page. Does this first so that feedback is immediate.

Parameters:

pagenum - a Integer object.

paint

public void paint(Graphics g)

Updates the positions of the thumbnails, and draws them to the screen.

Overrides:

paint in class JComponent

imageUpdate

public boolean imageUpdate(Image img,
 int infoflags,
 int x,
 int y,
 int width,
 int height)

Handles notification of any image updates. Not used any more.

Specified by:

imageUpdate in interface ImageObserver

Overrides:

imageUpdate in class Component

getPreferredScrollableViewportSize

public Dimension getPreferredScrollableViewportSize()

Specified by:

getPreferredScrollableViewportSize in interface Scrollable

getScrollableBlockIncrement

public int getScrollableBlockIncrement(Rectangle visrect,
 int orientation,
 int direction)

Specified by:

getScrollableBlockIncrement in interface Scrollable

getScrollableTracksViewportHeight

public boolean getScrollableTracksViewportHeight()

Specified by:

getScrollableTracksViewportHeight in interface Scrollable

getScrollableTracksViewportWidth

public boolean getScrollableTracksViewportWidth()

Specified by:

getScrollableTracksViewportWidth in interface Scrollable

getScrollableUnitIncrement

public int getScrollableUnitIncrement(Rectangle visrect,
 int orientation,
 int direction)

Specified by:

getScrollableUnitIncrement in interface Scrollable