Package org.apache.fop.render.awt.viewer
Class PreviewPanel
java.lang.Object
java.awt.Component
java.awt.Container
javax.swing.JComponent
javax.swing.JPanel
org.apache.fop.render.awt.viewer.PreviewPanel
- All Implemented Interfaces:
ImageObserver,MenuContainer,Serializable,Accessible
Holds a scrollpane with the rendered page(s) and handles actions performed to alter the display of the page.
Use PreviewPanel when you want to embed a preview in your own application with your own controls. Use PreviewDialog when you want to use the standard Fop controls.
In order to embed a PreviewPanel in your own app, create your own renderer, and your own agent. In order to support reloads, you may also implement your own Renderable extension or the default InputHandler. Setting the Renderable to null works fine though. Then call setPreviewDialogDisplayed(false) to hide the default dialog. Finally create a preview panel with the agent, renderable and renderer and add it to your gui:
FopFactory fopFactory = FopFactory.newInstance(); FOUserAgent agent = fopFactory.newFOUserAgent(); AWTRenderer renderer = new AWTRenderer(agent); agent.setRendererOverride(renderer); previewPanel = new PreviewPanel(agent, null, renderer); previewPanel = new PreviewPanel(ua); myGui.add(previewPanel);In order to set options and display a page do:
renderer.clearViewportList(); // build report xml here reload(); // optional if setting changedIf you wan't to change settings, don't call reload. A good example is to set the page to fill the screen and set the scrolling mode:
double scale = previewPanel.getScaleToFitWindow(); previewPanel.setScaleFactor(scale); previewPanel.setDisplayMode(PreviewPanel.CONTINUOUS);
- See Also:
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Nested Class Summary
Nested classes/interfaces inherited from class javax.swing.JPanel
JPanel.AccessibleJPanelNested classes/interfaces inherited from class javax.swing.JComponent
JComponent.AccessibleJComponentNested classes/interfaces inherited from class java.awt.Container
Container.AccessibleAWTContainerNested classes/interfaces inherited from class java.awt.Component
Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy -
Field Summary
FieldsModifier and TypeFieldDescriptionstatic final intConstant for displaying even/odd pages side by side in continuous form.static final intConstant for setting continuous page display.protected FOUserAgentThe FOUserAgent associated with this panel - often shared with PreviewDialogprotected RenderableRenderable instance that can be used to reload and re-render a document after modifications.static final intConstant for setting single page display.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_WINDOWFields inherited from class java.awt.Component
accessibleContext, BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENTFields inherited from interface java.awt.image.ImageObserver
ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH -
Constructor Summary
ConstructorsConstructorDescriptionPreviewPanel(FOUserAgent foUserAgent, Renderable renderable, AWTRenderer renderer) Creates a new PreviewPanel instance. -
Method Summary
Modifier and TypeMethodDescriptionvoidAdd a listener to receive notification of page change events.protected voidfirePageChange(int oldPage, int newPage) Notify all registered listeners of a page change event.intReturns the display mode.intgetPage()doublegetScaleToFit(double viewWidth, double viewHeight) Returns the scale factor required in order to fit either the current page or two adjacent pages within a window of the given height and width, depending on the display mode.doubleAs getScaleToFitWindow, but ignoring the Y axis.doubleReturns the scale factor required in order to fit either the current page within the current window or to fit two adjacent pages within the display if the displaymode is continuous.voidreload()Reloads and reformats document.voidRemoves a page change listener.voidsetDisplayMode(int mode) Sets the display mode.voidsetPage(int number) Selects the given page, displays it on screen and notifies listeners about the change in selection.voidsetScaleFactor(double scale) Scales page imagevoidshowPage()Starts rendering process and shows the current page.Methods inherited from class javax.swing.JPanel
getAccessibleContext, getUI, getUIClassID, paramString, setUI, updateUIMethods 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, updateMethods 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, validateTreeMethods 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
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Field Details
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SINGLE
public static final int SINGLEConstant for setting single page display.- See Also:
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CONTINUOUS
public static final int CONTINUOUSConstant for setting continuous page display.- See Also:
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CONT_FACING
public static final int CONT_FACINGConstant for displaying even/odd pages side by side in continuous form.- See Also:
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foUserAgent
The FOUserAgent associated with this panel - often shared with PreviewDialog -
renderable
Renderable instance that can be used to reload and re-render a document after modifications.
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Constructor Details
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PreviewPanel
Creates a new PreviewPanel instance.- Parameters:
foUserAgent- the user agentrenderable- the Renderable instance that is used to reload/re-render a document after modifications.renderer- the AWT Renderer instance to paint with
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Method Details
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getPage
public int getPage()- Returns:
- the currently visible page
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setPage
public void setPage(int number) Selects the given page, displays it on screen and notifies listeners about the change in selection.- Parameters:
number- the page number
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setDisplayMode
public void setDisplayMode(int mode) Sets the display mode.- Parameters:
mode- One of SINGLE, CONTINUOUS or CONT_FACING.
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getDisplayMode
public int getDisplayMode()Returns the display mode.- Returns:
- mode One of SINGLE, CONTINUOUS or CONT_FACING.
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reload
public void reload()Reloads and reformats document. -
addPageChangeListener
Add a listener to receive notification of page change events. Events will be fired whenever the currentPage value is changed. The values recorded are 0-based.- Parameters:
l- the page change listener to add
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removePageChangeListener
Removes a page change listener.- Parameters:
l- the page change listener to remove
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firePageChange
protected void firePageChange(int oldPage, int newPage) Notify all registered listeners of a page change event.- Parameters:
oldPage- the old pagenewPage- the new page
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setScaleFactor
public void setScaleFactor(double scale) Scales page image- Parameters:
scale- [0;1]
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getScaleToFitWindow
Returns the scale factor required in order to fit either the current page within the current window or to fit two adjacent pages within the display if the displaymode is continuous.- Returns:
- the requested scale factor
- Throws:
FOPException- in case of an error while fetching the PageViewport
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getScaleToFitWidth
As getScaleToFitWindow, but ignoring the Y axis.- Returns:
- the requested scale factor
- Throws:
FOPException- in case of an error while fetching the PageViewport
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getScaleToFit
Returns the scale factor required in order to fit either the current page or two adjacent pages within a window of the given height and width, depending on the display mode. In order to ignore either dimension, just specify it as Double.MAX_VALUE.- Parameters:
viewWidth- width of the viewviewHeight- height of the view- Returns:
- the requested scale factor
- Throws:
FOPException- in case of an error while fetching the PageViewport
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showPage
public void showPage()Starts rendering process and shows the current page.
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