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org.apache.batik.swing.svg
Class JSVGComponent

java.lang.Object
  extended by java.awt.Component
      extended by java.awt.Container
          extended by javax.swing.JComponent
              extended by org.apache.batik.swing.gvt.JGVTComponent
                  extended by org.apache.batik.swing.svg.JSVGComponent
All Implemented Interfaces:
ImageObserver, MenuContainer, Serializable
Direct Known Subclasses:
JSVGCanvas
public class JSVGComponent
extends JGVTComponent

This class represents a swing component that can display SVG documents. This component also lets you translate, zoom and rotate the document being displayed. This is the fundamental class for rendering SVG documents in a swing application.

Rendering Process

The rendering process can be broken down into five phases. Not all of those steps are required - depending on the method used to specify the SVG document to display, but basically the steps in the rendering process are:

  1. Building a DOM tree
    If the loadSVGDocument(String) method is used, the SVG file is parsed and an SVG DOM Tree is built.
  2. Building a GVT tree
    Once an SVGDocument is created (using the step 1 or if the setSVGDocument(SVGDocument) method has been used) - a GVT tree is constructed. The GVT tree is the data structure used internally to render an SVG document. see the org.apache.batik.gvt package.
  3. Executing the SVGLoad event handlers
    If the document is dynamic, the scripts are initialized and the SVGLoad event is dispatched before the initial rendering.
  4. Rendering the GVT tree
    Then the GVT tree is rendered. see the org.apache.batik.gvt.renderer package.
  5. Running the document
    If the document is dynamic, the update threads are started.

Those steps are performed in a separate thread. To be notified to what happens and eventually perform some operations - such as resizing the window to the size of the document or get the SVGDocument built via a URI, five different listeners are provided (one per step): SVGDocumentLoaderListener, GVTTreeBuilderListener, SVGLoadEventDispatcherListener, GVTTreeRendererListener, UpdateManagerListener.

Each listener has methods to be notified of the start of a phase, and methods to be notified of the end of a phase. A phase cannot start before the preceding has finished.

The following example shows how you can get the size of an SVG document. Note that due to how SVG is designed (units, percentages...), the size of an SVG document can be known only once the SVGDocument has been analyzed (ie. the GVT tree has been constructed).

 final JSVGComponent svgComp = new JSVGComponent();
 svgComp.loadSVGDocument("foo.svg");
 svgComp.addGVTTreeBuilderListener(new GVTTreeBuilderAdapter() {
     public void gvtBuildCompleted(GVTTreeBuilderEvent evt) {
         Dimension2D size = svgComp.getSVGDocumentSize();
         // ...
     }
 });

The second example shows how you can access to the DOM tree when a URI has been used to display an SVG document. 

 final JSVGComponent svgComp = new JSVGComponent();
 svgComp.loadSVGDocument("foo.svg");
 svgComp.addSVGDocumentLoaderListener(new SVGDocumentLoaderAdapter() {
     public void documentLoadingCompleted(SVGDocumentLoaderEvent evt) {
         SVGDocument svgDoc = svgComp.getSVGDocument();
         //...
     }
 });

Conformed to the single thread rule of swing, the listeners are executed in the swing thread. The sequence of the method calls for a particular listener and the order of the listeners themselves are guaranteed.

User Agent

The JSVGComponent can pick up some informations to a user agent. The SVGUserAgent provides a way to control the resolution used to display an SVG document (controling the pixel to millimeter conversion factor), perform an operation in respond to a click on an hyperlink, control the default language to use, or specify a user stylesheet, or how to display errors when an error occured while building/rendering a document (invalid XML file, missing attributes...).

See Also:
Serialized Form

Nested Class Summary
protected  class JSVGComponent.BridgeUserAgent
          To hide the user-agent methods.
protected static class JSVGComponent.BridgeUserAgentWrapper
          The user-agent wrapper, which call the methods in the event thread.
protected  class JSVGComponent.JSVGComponentListener
           
protected  class JSVGComponent.SVGListener
          To hide the listener methods.
 
Nested classes/interfaces inherited from class org.apache.batik.swing.gvt.JGVTComponent
JGVTComponent.Listener, JGVTComponent.UnixTextSelectionListener
 
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
protected  Runnable afterStopRunnable
           
static int ALWAYS_DYNAMIC
          Means that all document must be considered as dynamic.
static int ALWAYS_INTERACTIVE
          Means that all document must be considered as interactive.
static int ALWAYS_STATIC
          Means that all document must be considered as static.
protected  float animationLimitingAmount
          The amount of animation limiting.
protected  int animationLimitingMode
          The animation limiting mode.
static int AUTODETECT
          Means that the component must auto detect whether the current document is static or dynamic.
protected  BridgeContext bridgeContext
          The current bridge context.
static String BROKEN_LINK_TITLE
          String constant for the resource with the text for the title of the info tooltip for brokin link images.
protected  SVGDocumentLoader documentLoader
          The document loader.
protected  int documentState
          The document state.
protected static Set FEATURES
           
protected  String fragmentIdentifier
          The current document fragment identifier.
protected  GVTTreeBuilder gvtTreeBuilder
          The GVT tree builder.
protected  List gvtTreeBuilderListeners
          The GVT tree builder listeners.
protected  boolean isDynamicDocument
          Whether the current document has dynamic features.
protected  boolean isInteractiveDocument
          Whether the current document has dynamic features.
protected  JSVGComponent.JSVGComponentListener jsvgComponentListener
          The JGVTComponentListener.
protected  List linkActivationListeners
          The link activation listeners.
protected  DocumentLoader loader
          The concrete bridge document loader.
protected  SVGDocumentLoader nextDocumentLoader
          The next document loader to run.
protected  GVTTreeBuilder nextGVTTreeBuilder
          The next GVT tree builder to run.
protected  UpdateManager nextUpdateManager
          The next update manager.
protected  Dimension prevComponentSize
           
protected  boolean recenterOnResize
           
static String SCRIPT_ALERT
          String constant for the resource with the text for a script alert dialog.
static String SCRIPT_CONFIRM
          String constant for the resource with the text for a script confim dialog.
static String SCRIPT_PROMPT
          String constant for the resource with the text for a script prompt dialog.
protected  boolean selfCallingDisableInteractions
          Set to true before component calls setDisableInteractors so it knows that the users isn't the one calling it.
protected  org.w3c.dom.svg.SVGDocument svgDocument
          The current SVG document.
protected  List svgDocumentLoaderListeners
          The document loader listeners.
protected  SVGLoadEventDispatcher svgLoadEventDispatcher
          The SVGLoadEventDispatcher.
protected  List svgLoadEventDispatcherListeners
          The SVG onload dispatcher listeners.
protected  SVGUserAgent svgUserAgent
          The SVG user agent.
protected  UpdateManager updateManager
          The update manager.
protected  List updateManagerListeners
          The update manager listeners.
protected  SVGUpdateOverlay updateOverlay
           
protected  UserAgent userAgent
          The user agent.
protected  boolean userSetDisableInteractions
          Set to true if the user ever calls setDisableInteractions
protected  AffineTransform viewingTransform
           
 
Fields inherited from class org.apache.batik.swing.gvt.JGVTComponent
disableInteractions, doubleBufferedRendering, eventDispatcher, eventsEnabled, gvtRoot, gvtTreeRenderer, gvtTreeRendererListeners, image, initialTransform, interactor, interactors, jgvtListeners, listener, needRender, overlays, paintingTransform, progressivePaint, progressivePaintThread, renderer, rendererFactory, renderingTransform, selectableText, suspendInteractions, textSelectionManager, useUnixTextSelection
 
Fields inherited from class javax.swing.JComponent
accessibleContext, 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
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
JSVGComponent()
          Creates a new JSVGComponent.
JSVGComponent(SVGUserAgent ua, boolean eventsEnabled, boolean selectableText)
          Creates a new JSVGComponent.
 
Method Summary
 void addGVTTreeBuilderListener(GVTTreeBuilderListener l)
          Adds a GVTTreeBuilderListener to this component.
 void addLinkActivationListener(LinkActivationListener l)
          Adds a LinkActivationListener to this component.
 void addSVGDocumentLoaderListener(SVGDocumentLoaderListener l)
          Adds a SVGDocumentLoaderListener to this component.
 void addSVGLoadEventDispatcherListener(SVGLoadEventDispatcherListener l)
          Adds a SVGLoadEventDispatcherListener to this component.
 void addUpdateManagerListener(UpdateManagerListener l)
          Adds a UpdateManagerListener to this component.
protected  AffineTransform calculateViewingTransform(String fragIdent, org.w3c.dom.svg.SVGSVGElement svgElt)
           
 void clearUserSetDisableInteractions()
          Clears the boolean that indicates the 'user' has set disable interactions so that the canvas uses the value from documents.
protected  boolean computeRenderingTransform()
          Computes the transform used for rendering.
protected  BridgeContext createBridgeContext(SVGOMDocument doc)
          Creates a new bridge context.
protected  ImageRenderer createImageRenderer()
          Creates a new renderer.
protected  JGVTComponent.Listener createListener()
          Creates an instance of Listener.
protected  UserAgent createUserAgent()
          Creates a UserAgent.
 void dispose()
           
 void flushImageCache()
          Removes all images from the image cache.
 CanvasGraphicsNode getCanvasGraphicsNode()
           
protected  CanvasGraphicsNode getCanvasGraphicsNode(GraphicsNode gn)
           
 String getFragmentIdentifier()
          Returns the current's document fragment identifier.
 Interpreter getInterpreter(String type)
          Returns the Interpreter being used for script of the given MIME type.
 boolean getRecenterOnResize()
          Indicates if the canvas should recenter the content after the canvas is resized.
 org.w3c.dom.svg.SVGDocument getSVGDocument()
          Returns the current SVG document.
 Dimension2D getSVGDocumentSize()
          Returns the size of the SVG document.
 UpdateManager getUpdateManager()
          Returns the current update manager.
 AffineTransform getViewBoxTransform()
          Returns the transform from viewBox coords to screen coords
 AffineTransform getViewingTransform()
           
protected  void handleException(Exception e)
          Handles an exception.
protected  void installSVGDocument(org.w3c.dom.svg.SVGDocument doc)
          This does the real work of installing the SVG Document after the update manager from the previous document (if any) has been properly 'shut down'.
 boolean isDynamic()
          Tells whether the component use dynamic features to process the current document.
 boolean isInteractive()
          Tells whether the component use dynamic features to process the current document.
 void loadSVGDocument(String url)
          Loads a SVG document from the given URL.
 void removeGVTTreeBuilderListener(GVTTreeBuilderListener l)
          Removes a GVTTreeBuilderListener from this component.
 void removeLinkActivationListener(LinkActivationListener l)
          Removes a LinkActivationListener from this component.
 void removeSVGDocumentLoaderListener(SVGDocumentLoaderListener l)
          Removes a SVGDocumentLoaderListener from this component.
 void removeSVGLoadEventDispatcherListener(SVGLoadEventDispatcherListener l)
          Removes a SVGLoadEventDispatcherListener from this component.
 void removeUpdateManagerListener(UpdateManagerListener l)
          Removes a UpdateManagerListener from this component.
protected  void renderGVTTree()
          Renders the GVT tree.
 void resumeProcessing()
          Resumes the processing of the current document.
 void setAnimationLimitingCPU(float pc)
          Sets the animation limiting mode to a percentage of CPU.
 void setAnimationLimitingFPS(float fps)
          Sets the animation limiting mode to a number of frames per second.
 void setAnimationLimitingNone()
          Sets the animation limiting mode to "none".
protected  void setBridgeContextAnimationLimitingMode()
          Sets the animation limiting mode on the current bridge context.
 void setDisableInteractions(boolean b)
          Turn off all 'interactor' objects (pan, zoom, etc) if 'b' is true, turn them on if 'b' is false.
 void setDocument(Document doc)
          Sets the Document to display.
 void setDocumentState(int state)
          Sets the document state.
 void setFragmentIdentifier(String fi)
          Sets the current fragment identifier.
 void setGraphicsNode(GraphicsNode gn, boolean createDispatcher)
          Sets the GVT tree to display.
 void setMySize(Dimension d)
          This method is called when the component knows the desired size of the window (based on width/height of outermost SVG element).
 void setRecenterOnResize(boolean recenterOnResize)
          Returns sate of the recenter on resize flag.
 void setSVGDocument(org.w3c.dom.svg.SVGDocument doc)
          Sets the SVGDocument to display.
 void showAlert(String message)
          Shows an alert dialog box.
 boolean showConfirm(String message)
          Shows a confirm dialog box.
 String showPrompt(String message)
          Shows a prompt dialog box.
 String showPrompt(String message, String defaultValue)
          Shows a prompt dialog box.
protected  void startGVTTreeBuilder()
          Starts a tree builder.
protected  void startSVGLoadEventDispatcher(GraphicsNode root)
          Starts a SVGLoadEventDispatcher thread.
 void stopProcessing()
          Stops the processing of the current document.
protected  void stopThenRun(Runnable r)
          This method calls stop processing waits for all threads to die then runs the Runnable in the event queue thread.
 void suspendProcessing()
          Suspend the processing of the current document.
protected  boolean updateRenderingTransform()
          Updates the value of the transform used for rendering.
 void updateZoomAndPanEnable(Document doc)
          Enables/Disables Zoom And Pan based on the zoom and pan attribute of the currently installed document, Unless the user has set the Interactions State.
 
Methods inherited from class org.apache.batik.swing.gvt.JGVTComponent
addAWTListeners, addGVTTreeRendererListener, addJGVTComponentListener, createEventDispatcher, createTextSelectionManager, deselectAll, flush, flush, getDisableInteractions, getDoubleBufferedRendering, getGraphicsNode, getInitialTransform, getInteractors, getOffScreen, getOverlays, getPaintingTransform, getProgressivePaint, getRenderingTransform, getRenderRect, getSelectionOverlayColor, getSelectionOverlayStrokeColor, getTextSelectionManager, getUseUnixTextSelection, immediateRepaint, initializeEventHandling, isSelectionOverlayXORMode, paintComponent, releaseRenderingReferences, removeGVTTreeRendererListener, removeJGVTComponentListener, resetRenderingTransform, scheduleGVTRendering, select, setDoubleBufferedRendering, setGraphicsNode, setPaintingTransform, setProgressivePaint, setRenderingTransform, setRenderingTransform, setSelectionOverlayColor, setSelectionOverlayStrokeColor, setSelectionOverlayXORMode, setUseUnixTextSelection
 
Methods inherited from class javax.swing.JComponent
addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getAccessibleContext, 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, getUIClassID, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintImmediately, paintImmediately, paramString, 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, updateUI
 
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, transferFocusBackward, 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, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, 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, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, 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

AUTODETECT

public static final int AUTODETECT
Means that the component must auto detect whether the current document is static or dynamic.

See Also:
Constant Field Values

ALWAYS_DYNAMIC

public static final int ALWAYS_DYNAMIC
Means that all document must be considered as dynamic. Indicates that all DOM listeners should be registered. This supports 'interactivity' (anchors and cursors), as well as DOM modifications listeners to update the GVT rendering tree.

See Also:
Constant Field Values

ALWAYS_STATIC

public static final int ALWAYS_STATIC
Means that all document must be considered as static. Indicates that no DOM listeners should be registered. In this case the generated GVT tree should be totally independent of the DOM tree (in practice text holds references to the source text elements for font resolution).

See Also:
Constant Field Values

ALWAYS_INTERACTIVE

public static final int ALWAYS_INTERACTIVE
Means that all document must be considered as interactive. Indicates that DOM listeners should be registered to support, 'interactivity' this includes anchors and cursors, but does not include support for DOM modifications.

See Also:
Constant Field Values

SCRIPT_ALERT

public static final String SCRIPT_ALERT
String constant for the resource with the text for a script alert dialog. Must have a substitution for one string.

See Also:
Constant Field Values

SCRIPT_PROMPT

public static final String SCRIPT_PROMPT
String constant for the resource with the text for a script prompt dialog. Must have a substitution for one string.

See Also:
Constant Field Values

SCRIPT_CONFIRM

public static final String SCRIPT_CONFIRM
String constant for the resource with the text for a script confim dialog. Must have a substitution for one string.

See Also:
Constant Field Values

BROKEN_LINK_TITLE

public static final String BROKEN_LINK_TITLE
String constant for the resource with the text for the title of the info tooltip for brokin link images. No string substitution.

See Also:
Constant Field Values

documentLoader

protected SVGDocumentLoader documentLoader
The document loader.

nextDocumentLoader

protected SVGDocumentLoader nextDocumentLoader
The next document loader to run.

loader

protected DocumentLoader loader
The concrete bridge document loader.

gvtTreeBuilder

protected GVTTreeBuilder gvtTreeBuilder
The GVT tree builder.

nextGVTTreeBuilder

protected GVTTreeBuilder nextGVTTreeBuilder
The next GVT tree builder to run.

svgLoadEventDispatcher

protected SVGLoadEventDispatcher svgLoadEventDispatcher
The SVGLoadEventDispatcher.

updateManager

protected UpdateManager updateManager
The update manager.

nextUpdateManager

protected UpdateManager nextUpdateManager
The next update manager.

svgDocument

protected org.w3c.dom.svg.SVGDocument svgDocument
The current SVG document.

svgDocumentLoaderListeners

protected List svgDocumentLoaderListeners
The document loader listeners.

gvtTreeBuilderListeners

protected List gvtTreeBuilderListeners
The GVT tree builder listeners.

svgLoadEventDispatcherListeners

protected List svgLoadEventDispatcherListeners
The SVG onload dispatcher listeners.

linkActivationListeners

protected List linkActivationListeners
The link activation listeners.

updateManagerListeners

protected List updateManagerListeners
The update manager listeners.

userAgent

protected UserAgent userAgent
The user agent.

svgUserAgent

protected SVGUserAgent svgUserAgent
The SVG user agent.

bridgeContext

protected BridgeContext bridgeContext
The current bridge context.

fragmentIdentifier

protected String fragmentIdentifier
The current document fragment identifier.

isDynamicDocument

protected boolean isDynamicDocument
Whether the current document has dynamic features.

isInteractiveDocument

protected boolean isInteractiveDocument
Whether the current document has dynamic features.

selfCallingDisableInteractions

protected boolean selfCallingDisableInteractions
Set to true before component calls setDisableInteractors so it knows that the users isn't the one calling it.

userSetDisableInteractions

protected boolean userSetDisableInteractions
Set to true if the user ever calls setDisableInteractions

documentState

protected int documentState
The document state.

prevComponentSize

protected Dimension prevComponentSize

afterStopRunnable

protected Runnable afterStopRunnable

updateOverlay

protected SVGUpdateOverlay updateOverlay

recenterOnResize

protected boolean recenterOnResize

viewingTransform

protected AffineTransform viewingTransform

animationLimitingMode

protected int animationLimitingMode
The animation limiting mode.

animationLimitingAmount

protected float animationLimitingAmount
The amount of animation limiting.

jsvgComponentListener

protected JSVGComponent.JSVGComponentListener jsvgComponentListener
The JGVTComponentListener.

FEATURES

protected static final Set FEATURES
Constructor Detail

JSVGComponent

public JSVGComponent()
Creates a new JSVGComponent.

JSVGComponent

public JSVGComponent(SVGUserAgent ua,
                     boolean eventsEnabled,
                     boolean selectableText)
Creates a new JSVGComponent.

Parameters:
ua - a SVGUserAgent instance or null.
eventsEnabled - Whether the GVT tree should be reactive to mouse and key events.
selectableText - Whether the text should be selectable.
Method Detail

dispose

public void dispose()

setDisableInteractions

public void setDisableInteractions(boolean b)
Description copied from class: JGVTComponent
Turn off all 'interactor' objects (pan, zoom, etc) if 'b' is true, turn them on if 'b' is false.

Overrides:
setDisableInteractions in class JGVTComponent

clearUserSetDisableInteractions

public void clearUserSetDisableInteractions()
Clears the boolean that indicates the 'user' has set disable interactions so that the canvas uses the value from documents.

updateZoomAndPanEnable

public void updateZoomAndPanEnable(Document doc)
Enables/Disables Zoom And Pan based on the zoom and pan attribute of the currently installed document, Unless the user has set the Interactions State.

getRecenterOnResize

public boolean getRecenterOnResize()
Indicates if the canvas should recenter the content after the canvas is resized. If true it will try and keep the point that was at the center at the center after resize. Otherwise the upper left corner will be kept at the same point.

setRecenterOnResize

public void setRecenterOnResize(boolean recenterOnResize)
Returns sate of the recenter on resize flag.

isDynamic

public boolean isDynamic()
Tells whether the component use dynamic features to process the current document.

isInteractive

public boolean isInteractive()
Tells whether the component use dynamic features to process the current document.

setDocumentState

public void setDocumentState(int state)
Sets the document state. The given value must be one of AUTODETECT, ALWAYS_DYNAMIC or ALWAYS_STATIC. This only effects the loading of subsequent documents, it has no effect on the currently loaded document.

getUpdateManager

public UpdateManager getUpdateManager()
Returns the current update manager. The update manager becomes available after the first rendering completes. You can be notifed when the rendering completes by registering a GVTTreeRendererListener with the component and waiting for the gvtRenderingCompleted event. An UpdateManager is only created for Dynamic documents. By default the Canvas attempts to autodetect dynamic documents by looking for script elements and/or event attributes in the document, if it does not find these it assumes the document is static. Callers of this method will almost certainly want to call setDocumentState(ALWAYS_DYNAMIC) before loading the document (with setURI, setDocument, setSVGDocument etc.) so that an UpdateManager is always created (even for apparently static documents).

resumeProcessing

public void resumeProcessing()
Resumes the processing of the current document.

suspendProcessing

public void suspendProcessing()
Suspend the processing of the current document.

stopProcessing

public void stopProcessing()
Stops the processing of the current document.

Overrides:
stopProcessing in class JGVTComponent

loadSVGDocument

public void loadSVGDocument(String url)
Loads a SVG document from the given URL. Note: Because the loading is multi-threaded, the current SVG document is not guaranteed to be updated after this method returns. The only way to be notified a document has been loaded is to listen to the SVGDocumentLoaderEvents.

setDocument

public void setDocument(Document doc)
Sets the Document to display. If the document does not use Batik's SVG DOM Implemenation it will be cloned into that implementation. In this case you should use 'getSVGDocument()' to get the actual DOM that is attached to the rendering interface. Note that the preparation for rendering and the rendering itself occur asynchronously so you need to register event handlers if you want to know when the document is truly displayed. Notes for documents that you want to change in Java: From this point on you may only modify the the document in the UpdateManager thread @see #getUpdateManager. In many cases you also need to tell Batik to treat the document as a dynamic document by calling setDocumentState(ALWAYS_DYNAMIC).

setSVGDocument

public void setSVGDocument(org.w3c.dom.svg.SVGDocument doc)
Sets the SVGDocument to display. If the document does not use Batik's SVG DOM Implemenation it will be cloned into that implementation. In this case you should use 'getSVGDocument()' to get the actual DOM that is attached to the rendering interface. Note that the preparation for rendering and the rendering itself occur asynchronously so you need to register event handlers if you want to know when the document is truly displayed. Notes for documents that you want to change in Java. From this point on you may only modify the the document in the UpdateManager thread @see #getUpdateManager. In many cases you also need to tell Batik to treat the document as a dynamic document by calling setDocumentState(ALWAYS_DYNAMIC).

stopThenRun

protected void stopThenRun(Runnable r)
This method calls stop processing waits for all threads to die then runs the Runnable in the event queue thread. It returns immediately.

installSVGDocument

protected void installSVGDocument(org.w3c.dom.svg.SVGDocument doc)
This does the real work of installing the SVG Document after the update manager from the previous document (if any) has been properly 'shut down'.

startGVTTreeBuilder

protected void startGVTTreeBuilder()
Starts a tree builder.

getSVGDocument

public org.w3c.dom.svg.SVGDocument getSVGDocument()
Returns the current SVG document.

getSVGDocumentSize

public Dimension2D getSVGDocumentSize()
Returns the size of the SVG document.

getFragmentIdentifier

public String getFragmentIdentifier()
Returns the current's document fragment identifier.

setFragmentIdentifier

public void setFragmentIdentifier(String fi)
Sets the current fragment identifier.

flushImageCache

public void flushImageCache()
Removes all images from the image cache.

setGraphicsNode

public void setGraphicsNode(GraphicsNode gn,
                            boolean createDispatcher)
Description copied from class: JGVTComponent
Sets the GVT tree to display.

Overrides:
setGraphicsNode in class JGVTComponent

createBridgeContext

protected BridgeContext createBridgeContext(SVGOMDocument doc)
Creates a new bridge context.

startSVGLoadEventDispatcher

protected void startSVGLoadEventDispatcher(GraphicsNode root)
Starts a SVGLoadEventDispatcher thread.

createImageRenderer

protected ImageRenderer createImageRenderer()
Creates a new renderer.

Overrides:
createImageRenderer in class JGVTComponent

getCanvasGraphicsNode

public CanvasGraphicsNode getCanvasGraphicsNode()

getCanvasGraphicsNode

protected CanvasGraphicsNode getCanvasGraphicsNode(GraphicsNode gn)

getViewingTransform

public AffineTransform getViewingTransform()

getViewBoxTransform

public AffineTransform getViewBoxTransform()
Returns the transform from viewBox coords to screen coords

computeRenderingTransform

protected boolean computeRenderingTransform()
Computes the transform used for rendering. Returns true if the component needs to be repainted.

Overrides:
computeRenderingTransform in class JGVTComponent

calculateViewingTransform

protected AffineTransform calculateViewingTransform(String fragIdent,
                                                    org.w3c.dom.svg.SVGSVGElement svgElt)

updateRenderingTransform

protected boolean updateRenderingTransform()
Updates the value of the transform used for rendering. Return true if a repaint is required, otherwise false.

Overrides:
updateRenderingTransform in class JGVTComponent

renderGVTTree

protected void renderGVTTree()
Renders the GVT tree.

Overrides:
renderGVTTree in class JGVTComponent

handleException

protected void handleException(Exception e)
Handles an exception.

Overrides:
handleException in class JGVTComponent

addSVGDocumentLoaderListener

public void addSVGDocumentLoaderListener(SVGDocumentLoaderListener l)
Adds a SVGDocumentLoaderListener to this component.

removeSVGDocumentLoaderListener

public void removeSVGDocumentLoaderListener(SVGDocumentLoaderListener l)
Removes a SVGDocumentLoaderListener from this component.

addGVTTreeBuilderListener

public void addGVTTreeBuilderListener(GVTTreeBuilderListener l)
Adds a GVTTreeBuilderListener to this component.

removeGVTTreeBuilderListener

public void removeGVTTreeBuilderListener(GVTTreeBuilderListener l)
Removes a GVTTreeBuilderListener from this component.

addSVGLoadEventDispatcherListener

public void addSVGLoadEventDispatcherListener(SVGLoadEventDispatcherListener l)
Adds a SVGLoadEventDispatcherListener to this component.

removeSVGLoadEventDispatcherListener

public void removeSVGLoadEventDispatcherListener(SVGLoadEventDispatcherListener l)
Removes a SVGLoadEventDispatcherListener from this component.

addLinkActivationListener

public void addLinkActivationListener(LinkActivationListener l)
Adds a LinkActivationListener to this component.

removeLinkActivationListener

public void removeLinkActivationListener(LinkActivationListener l)
Removes a LinkActivationListener from this component.

addUpdateManagerListener

public void addUpdateManagerListener(UpdateManagerListener l)
Adds a UpdateManagerListener to this component.

removeUpdateManagerListener

public void removeUpdateManagerListener(UpdateManagerListener l)
Removes a UpdateManagerListener from this component.

showAlert

public void showAlert(String message)
Shows an alert dialog box.

showPrompt

public String showPrompt(String message)
Shows a prompt dialog box.

showPrompt

public String showPrompt(String message,
                         String defaultValue)
Shows a prompt dialog box.

showConfirm

public boolean showConfirm(String message)
Shows a confirm dialog box.

setMySize

public void setMySize(Dimension d)
This method is called when the component knows the desired size of the window (based on width/height of outermost SVG element). The default implementation simply calls setPreferredSize, and invalidate. However it is often useful to pack the window containing this component.

setAnimationLimitingNone

public void setAnimationLimitingNone()
Sets the animation limiting mode to "none".

setAnimationLimitingCPU

public void setAnimationLimitingCPU(float pc)
Sets the animation limiting mode to a percentage of CPU.

Parameters:
pc - the maximum percentage of CPU to use (0 < pc ≤ 1)

setAnimationLimitingFPS

public void setAnimationLimitingFPS(float fps)
Sets the animation limiting mode to a number of frames per second.

Parameters:
fps - the maximum number of frames per second (fps > 0)

getInterpreter

public Interpreter getInterpreter(String type)
Returns the Interpreter being used for script of the given MIME type.

Parameters:
type - The MIME type the returned Interpreter handles.

setBridgeContextAnimationLimitingMode

protected void setBridgeContextAnimationLimitingMode()
Sets the animation limiting mode on the current bridge context.

createListener

protected JGVTComponent.Listener createListener()
Creates an instance of Listener.

Overrides:
createListener in class JGVTComponent

createUserAgent

protected UserAgent createUserAgent()
Creates a UserAgent.

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