Package com.sun.j3d.exp.swing
Class JCanvas3D
java.lang.Object
java.awt.Component
java.awt.Container
javax.swing.JComponent
javax.swing.JPanel
com.sun.j3d.exp.swing.JCanvas3D
- All Implemented Interfaces:
ImageObserver
,MenuContainer
,Serializable
,EventListener
,Accessible
,AncestorListener
This class provides a lightweight capability to Java 3D. The component
handles bidirectional messaging between swing and Java 3D so that repaint
ordonned by swing are sent to the universe if necessary and refreshes from
the universe are painted accordingly. In order to get responsive interfaces
during layout changes, the canvas has a feature (disabled by default) that
lets true resizes occur only after a timer expires. Images between real
resizes can eventually be slightly wrong and pixelated, but their display
will be stutterless.
Lightweight canvas also handles redirection to heavyweight canvas for the following events:
- InputMethodEvent
- KeyEvent
- FocusEvent
- ComponentKeyEvent
- MouseWheelEvent
- MouseEvent
- MouseMotionEvent
When Swing is waiting for a canvas to be retrieved and that canvas is in rendering stage,a loop takes place, which includes small calls to wait(). The canvas status is tested for readiness before and after the wait(). If the canvas is not ready to be retrieved after the wait(), counter is decremented and control is given back to awt thread, which will repaint old buffer. If the loop goes over a certain amount of iterations, the canvas is declared 'crashed' and won't be updated anymore. This was done so that a crashed canvas/universe does not remove control over your GUI and does not leave you with a frozen application. In current implementation, the delay before a canvas is declared crashed is of :
Lightweight canvas also handles redirection to heavyweight canvas for the following events:
- InputMethodEvent
- KeyEvent
- FocusEvent
- ComponentKeyEvent
- MouseWheelEvent
- MouseEvent
- MouseMotionEvent
When Swing is waiting for a canvas to be retrieved and that canvas is in rendering stage,a loop takes place, which includes small calls to wait(). The canvas status is tested for readiness before and after the wait(). If the canvas is not ready to be retrieved after the wait(), counter is decremented and control is given back to awt thread, which will repaint old buffer. If the loop goes over a certain amount of iterations, the canvas is declared 'crashed' and won't be updated anymore. This was done so that a crashed canvas/universe does not remove control over your GUI and does not leave you with a frozen application. In current implementation, the delay before a canvas is declared crashed is of :
30 Math.max(20.0, getView().getMinimumFrameCycleTime() )
- Since:
- Java 3D 1.5
- Author:
- Frederic 'pepe' Barachant
- See Also:
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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
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Field Summary
FieldsModifier and TypeFieldDescriptionstatic final int
Resizing the canvas or component will be done if no resizing occurs after expiration of a certain delay.static final int
Resizing the canvas or component will be done immediately.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
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Constructor Summary
ConstructorsConstructorDescriptionConstructs and initializes a new JCanvas3D object that Java 3D can render into.JCanvas3D
(GraphicsDevice device) Constructs and initializes a new Canvas3D object that Java 3D can render into, using the specified graphics device.JCanvas3D
(GraphicsConfigTemplate3D template) Constructs and initializes a new Canvas3D object that Java 3D can render into, using the specified template.JCanvas3D
(GraphicsConfigTemplate3D template, GraphicsDevice device) Constructs and initializes a new Canvas3D object that Java 3D can render into, using the specified template and graphics device. -
Method Summary
Modifier and TypeMethodDescriptionvoid
ancestorAdded
(AncestorEvent event) void
ancestorMoved
(AncestorEvent event) void
ancestorRemoved
(AncestorEvent event) Returns the offscreen heavyweight canvas of that lightweight component.int
Retrieves the resize mode for that component.int
Retrieves the validation delay for that canvas, whatever the resize mode is set to.void
Paints the result of the rendering.protected void
Redirects event to canvas and to superclass.protected void
Redirects event to canvas and to superclass.protected void
Redirects event to canvas and to superclass.protected void
Redirects event to canvas and to superclass.protected void
Redirects event to canvas and to superclass.protected void
Redirects event to canvas and to superclass.protected void
Redirects event to canvas and to superclass.void
setBounds
(int x, int y, int width, int height) void
setResizeMode
(int resizeMode) Sets resize mode to be used on this component.void
setResizeValidationDelay
(int resizeValidationDelay) Sets the validation delay for the component.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, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processKeyBinding, 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, processHierarchyBoundsEvent, processHierarchyEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, resize, resize, 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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RESIZE_IMMEDIATELY
public static final int RESIZE_IMMEDIATELYResizing the canvas or component will be done immediately. This operation might take some time and make the application look sluggish.- See Also:
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RESIZE_DELAYED
public static final int RESIZE_DELAYEDResizing the canvas or component will be done if no resizing occurs after expiration of a certain delay. Rendering will be eventually stretched or deformed. It can be useful on certain applications where smooth update of UI during layout is needed or desired.- See Also:
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Constructor Details
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JCanvas3D
public JCanvas3D()Constructs and initializes a new JCanvas3D object that Java 3D can render into. The screen device is obtained fromGraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice()
, which might not be the one you should use if you are in a multiscreen environment. The JCanvas3D is constructed using the following default parameters:
resize mode : RESIZE_IMMEDIATELY
validation delay : 100ms
double buffer enable : false
stereo enable : false -
JCanvas3D
Constructs and initializes a new Canvas3D object that Java 3D can render into, using the specified graphics device.- Parameters:
device
- the screen graphics device that will be used to construct a GraphicsConfiguration.
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JCanvas3D
Constructs and initializes a new Canvas3D object that Java 3D can render into, using the specified template. The screen device is obtained fromGraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice()
, which might not be the one you should use if you are in a multiscreen environment.- Parameters:
template
- The template that will be used to construct a GraphicsConfiguration. The stereo and doublebuffer properties are forced to UNNECESSARY.
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JCanvas3D
Constructs and initializes a new Canvas3D object that Java 3D can render into, using the specified template and graphics device.- Parameters:
template
- The template that will be used to construct a GraphicsConfiguration. The stereo and doublebuffer properties are forced to UNNECESSARY.device
- the screen graphics device that will be used to construct a GraphicsConfiguration in conjunction with the template.
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Method Details
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ancestorAdded
- Specified by:
ancestorAdded
in interfaceAncestorListener
- Parameters:
event
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ancestorMoved
- Specified by:
ancestorMoved
in interfaceAncestorListener
- Parameters:
event
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ancestorRemoved
- Specified by:
ancestorRemoved
in interfaceAncestorListener
- Parameters:
event
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getOffscreenCanvas3D
Returns the offscreen heavyweight canvas of that lightweight component.- Returns:
- the heavyweight canvas that lies in the deepness of this Component.
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getResizeMode
public int getResizeMode()Retrieves the resize mode for that component.- Returns:
- the resize mode, which can be one of RESIZE_IMMEDIATELY or RESIZE_DELAYED
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getResizeValidationDelay
public int getResizeValidationDelay()Retrieves the validation delay for that canvas, whatever the resize mode is set to.- Returns:
- the validation delay.
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paintComponent
Paints the result of the rendering. If the rendered buffer is not useable (render thread being between [code]postRender()[/code] and [code]postSwap()[/code]), it will wait for it to be ready. Otherwise it will directly paint the previous buffer.- Overrides:
paintComponent
in classJComponent
- Parameters:
g
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processComponentKeyEvent
Redirects event to canvas and to superclass.- Overrides:
processComponentKeyEvent
in classJComponent
- Parameters:
e
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processFocusEvent
Redirects event to canvas and to superclass.- Overrides:
processFocusEvent
in classComponent
- Parameters:
e
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processInputMethodEvent
Redirects event to canvas and to superclass.- Overrides:
processInputMethodEvent
in classComponent
- Parameters:
e
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processKeyEvent
Redirects event to canvas and to superclass.- Overrides:
processKeyEvent
in classJComponent
- Parameters:
e
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processMouseEvent
Redirects event to canvas and to superclass.- Overrides:
processMouseEvent
in classJComponent
- Parameters:
e
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processMouseMotionEvent
Redirects event to canvas and to superclass.- Overrides:
processMouseMotionEvent
in classJComponent
- Parameters:
e
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processMouseWheelEvent
Redirects event to canvas and to superclass.- Overrides:
processMouseWheelEvent
in classComponent
- Parameters:
e
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setBounds
public void setBounds(int x, int y, int width, int height) -
setResizeMode
public void setResizeMode(int resizeMode) Sets resize mode to be used on this component. Resize mode permits to have smoother canvas resizes. The time taken by a canvas to be resized can be pretty long: renderer has to stop, current render has to end, everything has to be initialized again, and after all that has been done, renderer is started again, then the image is displayed once rendered. Resize mode uses a timer to make those steps only after the last refresh request occured. 'Latest refresh' is determined by the amount of time between now and the last time you asked for a size change. If that time expires, a real resize is done. In between, the same size is rendered, but the drawn image is scaled down/up. This has some drawbacks, as the image can appear blocked, imprecise, distorted, incomplete for that while, but most of the time only some of the drawbacks will be users will see nothing. Default delay is set to 100ms, which is low enough for common human not to be able to really see that the rendered image is scaled.- Parameters:
resizeMode
- can be one of RESIZE_IMMEDIATELY or RESIZE_DELAYED- See Also:
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setResizeValidationDelay
public void setResizeValidationDelay(int resizeValidationDelay) Sets the validation delay for the component. The validation delay is the maximum time allowed for the canvas resizing to occur using rendered buffer scaling. Once that delay expired, the canvas is resized at the lowest level possible, thus in the rendering pipeline. Note: Changing this field is only useful if resize mode is set to RESIZE_IMMEDIATELY or RESIZE_DELAYED- Parameters:
resizeValidationDelay
- the delay before a real resize would occur.- See Also:
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