Package org.faceless.pdf2.viewer2

Class DualPageDocumentViewport

java.lang.Object

java.awt.Component

java.awt.Container

javax.swing.JComponent

javax.swing.JPanel

org.faceless.pdf2.viewer2.DocumentViewport

org.faceless.pdf2.viewer2.DualPageDocumentViewport

All Implemented Interfaces:

ImageObserver, MenuContainer, PropertyChangeListener, Serializable, EventListener, Accessible

public class DualPageDocumentViewport
extends DocumentViewport

A DocumentViewport that displays two pages at a time.

This code is copyright the Big Faceless Organization. You're welcome to use, modify and distribute it in any form in your own projects, provided those projects continue to make use of the Big Faceless PDF library.

Since:

2.13

See Also:

DocumentPanel, 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

Modifier and Type	Field	Description
static int	ODD_PAGES_ON_LEFT	Constant indicating that odd numbered pages should be shown on the left hand side.
static int	ODD_PAGES_ON_RIGHT	Constant indicating that odd numbered pages should be shown on the right hand side.

Fields inherited from class org.faceless.pdf2.viewer2.DocumentViewport

CURSOR_GRAB, CURSOR_GRABBING, interpagemargin, margin, mouseWheelUnit, ZOOM_FIT, ZOOM_FITHEIGHT, ZOOM_FITWIDTH, ZOOM_NONE

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
DualPageDocumentViewport()	Constructs a new DualPageDocumentViewport that shows odd numbered pages on the right hand side.
DualPageDocumentViewport(int handedness)	Constructs a new DualPageDocumentViewport that shows odd numbered pages on the specified side.

Method Summary

Modifier and Type	Method	Description
void	addPagePanelInteractionListener(PagePanelInteractionListener listener)	Add a PagePanelInteractionListener to any PagePanel objects that have been or will be created by this DocumentViewport
void	addPagePanelListener(PagePanelListener listener)	Add a PagePanelListener to any PagePanel objects that have been or will be created by this DocumentViewport
void	ensureVisible(PDFPage page, double x, double y)	Ensure the specified point on the page is visible.
Adjustable	getAdjustable(int position)	Return the "Adjustable" object for the specified position - typically this is the horizontal or vertical JScrollBar, although this method may return null or accept other parameters.
int	getHandedness()
int	getNextSelectablePageIndex(PDFPage page)	Return the index of the page that should be displayed when the specified page is selected in this viewport and the "next page" is requested, via a button or other action.
PDFPage	getPage()	Return the PDFPage in use by DocumentViewport.getPagePanel()
PagePanel	getPagePanel()	Get the currently displayed PagePanel.
Collection<PagePanel>	getPagePanels()	Returns a read only Collection containing all the PagePanels currently displayed in this Viewport.
int	getPreviousSelectablePageIndex(PDFPage page)	Return the index of the page that should be displayed when the specified page is selected in this viewport and the "previous page" is requested, via a button or other action.
PDFPage	getRenderingPage()	Return the page that is currently in the process of rendering.
float	getTargetZoom(int zoommode, PDFPage page)	Return the appropriate zoom level when switching to the specified page.
JComponent	getView()	Get the JComponent that directly contains the PagePanel objects, not including scrollbars or other similar items.
Dimension	getViewportSize()	Return the size in pixels of the space available to display pages in this viewport, not including scrollbars or other decoration
float	getZoom()	Get the current zoom level
boolean	isDraggable()	Indicates whether the contents of this viewport can be dragged with the mouse to position them.
boolean	isPageVisible(PDFPage page, double x, double y)	Indicates whether the specified point in the specified page is visible in the viewport.
void	propertyChange(PropertyChangeEvent event)	The viewport implements PropertyChangeListener, and will be called whenever the PDF has been updated.
void	removePagePanelInteractionListener(PagePanelInteractionListener listener)	Remove a PagePanelInteractionListener from any PagePanel objects that have been created by this DocumentViewport
void	removePagePanelListener(PagePanelListener listener)	Remove a PagePanelListener from any PagePanel objects that have been created by this DocumentViewport
void	setAdjustableValues(int horizontal, int vertical)	Set the values of the adjustables returned by DocumentViewport.getAdjustable(int).
void	setDocumentPanel(DocumentPanel panel)	Set the DocumentPanel that contains this DocumentViewport.
void	setDraggable(boolean draggable)	Sets whether to allow the contents of this viewport to be dragged with the mouse.
void	setHandedness(int handedness)
void	setPage(PDFPage page, double x, double y, double zoom)	Set the currently displayed page.
void	setRenderingHints(RenderingHints hints)	Set the RenderingHints that should be used when rendering the pages
void	setZoom(float zoom)	Set the zoom level of this DocumentViewport.
void	setZoomMode(int zoommode)	Control how the document in the viewport is redrawn when the Viewport is resized.

Methods inherited from class org.faceless.pdf2.viewer2.DocumentViewport

getBorderColor, getDefaultRenderingHints, getDocumentPanel, getShadowColor, getZoomMode, isSmoothScrolling, paintPageBorder, smoothScroll

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, paint, 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, 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, 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

Field Detail

ODD_PAGES_ON_RIGHT

public static final int ODD_PAGES_ON_RIGHT

Constant indicating that odd numbered pages should be shown on the right hand side.

See Also:

Constant Field Values

ODD_PAGES_ON_LEFT

public static final int ODD_PAGES_ON_LEFT

Constant indicating that odd numbered pages should be shown on the left hand side.

See Also:

Constant Field Values

Constructor Detail

DualPageDocumentViewport

public DualPageDocumentViewport()

Constructs a new DualPageDocumentViewport that shows odd numbered pages on the right hand side.

DualPageDocumentViewport

public DualPageDocumentViewport(int handedness)

Constructs a new DualPageDocumentViewport that shows odd numbered pages on the specified side.

Parameters:

handedness - ODD_PAGES_ON_RIGHT or ODD_PAGES_ON_LEFT

Method Detail

getHandedness

public int getHandedness()

setHandedness

public void setHandedness(int handedness)

setDocumentPanel

public void setDocumentPanel(DocumentPanel panel)

Description copied from class: DocumentViewport

Set the DocumentPanel that contains this DocumentViewport. If overriding this method you must first call super.setDocumentPanel(panel)

Overrides:

setDocumentPanel in class DocumentViewport

isDraggable

public boolean isDraggable()

Description copied from class: DocumentViewport

Indicates whether the contents of this viewport can be dragged with the mouse to position them.

Specified by:

isDraggable in class DocumentViewport

setDraggable

public void setDraggable(boolean draggable)

Description copied from class: DocumentViewport

Sets whether to allow the contents of this viewport to be dragged with the mouse.

Specified by:

setDraggable in class DocumentViewport

Parameters:

draggable - if true, contents may be dragged

getPage

public PDFPage getPage()

Description copied from class: DocumentViewport

Return the PDFPage in use by DocumentViewport.getPagePanel()

Overrides:

getPage in class DocumentViewport

setPage

public void setPage(PDFPage page,
                    double x,
                    double y,
                    double zoom)

Description copied from class: DocumentViewport

Set the currently displayed page. The exact implementation of this depends on the type of viewport, but the idea is that the specified page and position becomes the primary focus of this viewport.

Specified by:

setPage in class DocumentViewport

Parameters:

page - the page to display

x - the left-most X position of the page, relative to PagePanel.getFullPageView(org.faceless.pdf2.PDFPage). A value of NaN means keep the current value. 0 means the left edge

y - the top-most Y position of the page, relative to PagePanel.getFullPageView(org.faceless.pdf2.PDFPage). A value of NaN means keep the current value. 0 means the top edge

zoom - the zoom level. A value of <= 0 or NaN means keep the current zoom. A value of one means 72dpi

ensureVisible

public void ensureVisible(PDFPage page,
                          double x,
                          double y)

Description copied from class: DocumentViewport

Ensure the specified point on the page is visible. The zoom level of the page is not changed, but the page itself may be changed or repositioned to ensure the specified point is visible in the centre area.

Overrides:

ensureVisible in class DocumentViewport

x - the X position of the page in absolute PDF points (ie measured from the bottom left)

y - the Y position of the page in absolute PDF points (ie measured from the bottom left)

getNextSelectablePageIndex

public int getNextSelectablePageIndex(PDFPage page)

Description copied from class: DocumentViewport

Return the index of the page that should be displayed when the specified page is selected in this viewport and the "next page" is requested, via a button or other action. By default this is just the next page in the PDF

Overrides:

getNextSelectablePageIndex in class DocumentViewport

Returns:

the index of the next page to display, or -1 if no such page exists.

getPreviousSelectablePageIndex

public int getPreviousSelectablePageIndex(PDFPage page)

Description copied from class: DocumentViewport

Return the index of the page that should be displayed when the specified page is selected in this viewport and the "previous page" is requested, via a button or other action. By default this is just the previous page in the PDF

Overrides:

getPreviousSelectablePageIndex in class DocumentViewport

Returns:

the index of the previous page to display, or -1 if no such page exists.

isPageVisible

public boolean isPageVisible(PDFPage page,
                             double x,
                             double y)

Description copied from class: DocumentViewport

Indicates whether the specified point in the specified page is visible in the viewport. If x or y is NaN, indicates whether any part of the page is visible.

Overrides:

isPageVisible in class DocumentViewport

x - the X position of the page in points

y - the Y position of the page in points

getView

public JComponent getView()

Description copied from class: DocumentViewport

Get the JComponent that directly contains the PagePanel objects, not including scrollbars or other similar items.

Specified by:

getView in class DocumentViewport

getZoom

public float getZoom()

Description copied from class: DocumentViewport

Get the current zoom level

Specified by:

getZoom in class DocumentViewport

setZoom

public void setZoom(float zoom)

Description copied from class: DocumentViewport

Set the zoom level of this DocumentViewport. The page and position should remain unchanged if possible.

Specified by:

setZoom in class DocumentViewport

getViewportSize

public Dimension getViewportSize()

Description copied from class: DocumentViewport

Return the size in pixels of the space available to display pages in this viewport, not including scrollbars or other decoration

Specified by:

getViewportSize in class DocumentViewport

getPagePanel

public PagePanel getPagePanel()

Description copied from class: DocumentViewport

Get the currently displayed PagePanel. As for setPage(), the exact implementation of this method depends on the type of viewport, but the idea is it returns the PagePanel that is the primary focus of this viewport.

Specified by:

getPagePanel in class DocumentViewport

getPagePanels

public Collection<PagePanel> getPagePanels()

Description copied from class: DocumentViewport

Returns a read only Collection containing all the PagePanels currently displayed in this Viewport.

Overrides:

getPagePanels in class DocumentViewport

getRenderingPage

public PDFPage getRenderingPage()

Description copied from class: DocumentViewport

Return the page that is currently in the process of rendering. If the page has rendered this method returns the same as DocumentViewport.getPage()

Specified by:

getRenderingPage in class DocumentViewport

getAdjustable

public Adjustable getAdjustable(int position)

Description copied from class: DocumentViewport

Return the "Adjustable" object for the specified position - typically this is the horizontal or vertical JScrollBar, although this method may return null or accept other parameters. The adjustable is measured in AWT space (pixels from the top left). This method may return null if there is no adjustable.

Specified by:

getAdjustable in class DocumentViewport

Parameters:

position - one of Adjustable.HORIZONTAL or Adjustable.VERTICAL

setAdjustableValues

public void setAdjustableValues(int horizontal,
                                int vertical)

Description copied from class: DocumentViewport

Set the values of the adjustables returned by DocumentViewport.getAdjustable(int). Calling this method is preferable to setting the values of each adjustable individually when both are to be set

Specified by:

setAdjustableValues in class DocumentViewport

Parameters:

horizontal - the value for the Adjustable.HORIZONTAL adjustable.

vertical - the value for the Adjustable.VERTICAL adjustable.

setRenderingHints

public void setRenderingHints(RenderingHints hints)

Description copied from class: DocumentViewport

Set the RenderingHints that should be used when rendering the pages

Specified by:

setRenderingHints in class DocumentViewport

addPagePanelListener

public void addPagePanelListener(PagePanelListener listener)

Description copied from class: DocumentViewport

Add a PagePanelListener to any PagePanel objects that have been or will be created by this DocumentViewport

Specified by:

addPagePanelListener in class DocumentViewport

Parameters:

listener - the listener

removePagePanelListener

public void removePagePanelListener(PagePanelListener listener)

Description copied from class: DocumentViewport

Remove a PagePanelListener from any PagePanel objects that have been created by this DocumentViewport

Specified by:

removePagePanelListener in class DocumentViewport

Parameters:

listener - the listener

addPagePanelInteractionListener

public void addPagePanelInteractionListener(PagePanelInteractionListener listener)

Description copied from class: DocumentViewport

Add a PagePanelInteractionListener to any PagePanel objects that have been or will be created by this DocumentViewport

Specified by:

addPagePanelInteractionListener in class DocumentViewport

Parameters:

listener - the listener

removePagePanelInteractionListener

public void removePagePanelInteractionListener(PagePanelInteractionListener listener)

Description copied from class: DocumentViewport

Remove a PagePanelInteractionListener from any PagePanel objects that have been created by this DocumentViewport

Specified by:

removePagePanelInteractionListener in class DocumentViewport

Parameters:

listener - the listener

setZoomMode

public void setZoomMode(int zoommode)

Description copied from class: DocumentViewport

Control how the document in the viewport is redrawn when the Viewport is resized. The default is DocumentViewport.ZOOM_NONE, which means no action is performed, but other actions include DocumentViewport.ZOOM_FIT, DocumentViewport.ZOOM_FITWIDTH and DocumentViewport.ZOOM_FITHEIGHT, which will ensure that the document is always zoomed to fit completely, fit the width or fit the height of the viewport respectively

Overrides:

setZoomMode in class DocumentViewport

getTargetZoom

public float getTargetZoom(int zoommode,
                           PDFPage page)

Description copied from class: DocumentViewport

Return the appropriate zoom level when switching to the specified page. If the value of zoommode is DocumentViewport.ZOOM_NONE then this just returns the value of DocumentViewport.getZoom(), otherwise the returned zoom level will correctly fit the page to the Viewport.

Overrides:

getTargetZoom in class DocumentViewport

page - the PDFPage that we are calculating the zoom for.

See Also:

DocumentViewport.getZoomMode()

propertyChange

public void propertyChange(PropertyChangeEvent event)

Description copied from class: DocumentViewport

The viewport implements PropertyChangeListener, and will be called whenever the PDF has been updated. By default it's a no-op.

Specified by:

propertyChange in interface PropertyChangeListener

Overrides:

propertyChange in class DocumentViewport