javax.media.opengl
Class GLJPanel

java.lang.Object
  extended byjava.awt.Component
      extended byjava.awt.Container
          extended byjavax.swing.JComponent
              extended byjavax.swing.JPanel
                  extended byjavax.media.opengl.GLJPanel
All Implemented Interfaces:
Accessible, ComponentEvents, GLAutoDrawable, GLDrawable, ImageObserver, MenuContainer, Serializable

public class GLJPanel
extends JPanel
implements GLAutoDrawable

A lightweight Swing component which provides OpenGL rendering support. Provided for compatibility with Swing user interfaces when adding a heavyweight doesn't work either because of Z-ordering or LayoutManager problems.

The GLJPanel can be made transparent by creating it with a GLCapabilities object with alpha bits specified and calling setOpaque(boolean)(false). Pixels with resulting OpenGL alpha values less than 1.0 will be overlaid on any underlying Swing rendering.

Notes specific to the Reference Implementation: This component attempts to use hardware-accelerated rendering via pbuffers and falls back on to software rendering if problems occur. Note that because this component attempts to use pbuffers for rendering, and because pbuffers can not be resized, somewhat surprising behavior may occur during resize operations; the GLEventListener.init(javax.media.opengl.GLAutoDrawable) method may be called multiple times as the pbuffer is resized to be able to cover the size of the GLJPanel. This behavior is correct, as the textures and display lists for the GLJPanel will have been lost during the resize operation. The application should attempt to make its GLEventListener.init() methods as side-effect-free as possible.

See Also:
Serialized Form

Nested Class Summary
 
Nested classes inherited from class javax.swing.JPanel
JPanel.AccessibleJPanel
 
Nested classes inherited from class javax.swing.JComponent
JComponent.AccessibleJComponent
 
Nested classes inherited from class java.awt.Container
Container.AccessibleAWTContainer
 
Nested classes inherited from class java.awt.Component
Component.AccessibleAWTComponent, Component.BltBufferStrategy, Component.FlipBufferStrategy
 
Field Summary
 
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
GLJPanel()
          Creates a new GLJPanel component with a default set of OpenGL capabilities and using the default OpenGL capabilities selection mechanism.
GLJPanel(GLCapabilities capabilities)
          Creates a new GLJPanel component with the requested set of OpenGL capabilities, using the default OpenGL capabilities selection mechanism.
GLJPanel(GLCapabilities capabilities, GLCapabilitiesChooser chooser, GLContext shareWith)
          Creates a new GLJPanel component.
 
Method Summary
 void addGLEventListener(GLEventListener listener)
          Adds a GLEventListener to this drawable.
 void addNotify()
          Overridden to track when this component is added to a container.
 GLContext createContext(GLContext shareWith)
          Creates a new context for drawing to this drawable that will optionally share display lists and other server-side OpenGL objects with the specified GLContext.
 void display()
          Causes OpenGL rendering to be performed for this GLAutoDrawable by calling display for all registered GLEventListeners.
 boolean getAutoSwapBufferMode()
          Indicates whether automatic buffer swapping is enabled for this drawable.
 GLContext getContext()
          Returns the context associated with this drawable.
 GL getGL()
          Returns the GL pipeline object this GLAutoDrawable uses.
protected  void paintComponent(Graphics g)
          Overridden to cause OpenGL rendering to be performed during repaint cycles.
 void removeGLEventListener(GLEventListener listener)
          Removes a GLEventListener from this drawable.
 void removeNotify()
          Overridden to track when this component is removed from a container.
 void reshape(int x, int y, int width, int height)
          Overridden to cause GLDrawableHelper.reshape(javax.media.opengl.GLAutoDrawable, int, int, int, int) to be called on all registered GLEventListeners.
 void setAutoSwapBufferMode(boolean onOrOff)
          Enables or disables automatic buffer swapping for this drawable.
 void setGL(GL gl)
          Sets the GL pipeline object this GLAutoDrawable uses.
 void setOpaque(boolean opaque)
           
 void setRealized(boolean realized)
          Indicates to on-screen GLDrawable implementations whether the underlying window has been created and can be drawn into.
 boolean shouldPreserveColorBufferIfTranslucent()
          For a translucent GLJPanel (one for which setOpaque(false) has been called), indicates whether the application should preserve the OpenGL color buffer (GL_COLOR_BUFFER_BIT) for correct rendering of the GLJPanel and underlying widgets which may show through portions of the GLJPanel with alpha values less than 1.
 void swapBuffers()
          Swaps the front and back buffers of this drawable.
 
Methods inherited from class javax.swing.JPanel
getAccessibleContext, getUI, getUIClassID, paramString, setUI, updateUI
 
Methods inherited from class javax.swing.JComponent
addAncestorListener, addPropertyChangeListener, addPropertyChangeListener, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBorder, getBounds, getClientProperty, getComponentGraphics, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getGraphics, getHeight, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPreferredSize, getPropertyChangeListeners, getPropertyChangeListeners, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isPreferredSizeSet, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removePropertyChangeListener, removePropertyChangeListener, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFont, setForeground, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update
 
Methods inherited from class java.awt.Container
add, add, add, add, add, addContainerListener, addImpl, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setFocusCycleRoot, setFocusTraversalKeys, setFocusTraversalPolicy, 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, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getPeer, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, 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, processMouseEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, 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
 
Methods inherited from interface javax.media.opengl.GLAutoDrawable
repaint
 
Methods inherited from interface javax.media.opengl.GLDrawable
getHeight, getWidth, setSize
 
Methods inherited from interface javax.media.opengl.ComponentEvents
addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, addPropertyChangeListener, addPropertyChangeListener, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener
 

Constructor Detail

GLJPanel

public GLJPanel()
Creates a new GLJPanel component with a default set of OpenGL capabilities and using the default OpenGL capabilities selection mechanism.


GLJPanel

public GLJPanel(GLCapabilities capabilities)
Creates a new GLJPanel component with the requested set of OpenGL capabilities, using the default OpenGL capabilities selection mechanism.


GLJPanel

public GLJPanel(GLCapabilities capabilities,
                GLCapabilitiesChooser chooser,
                GLContext shareWith)
Creates a new GLJPanel component. The passed GLCapabilities specifies the OpenGL capabilities for the component; if null, a default set of capabilities is used. The GLCapabilitiesChooser specifies the algorithm for selecting one of the available GLCapabilities for the component; a DefaultGLCapabilitesChooser is used if null is passed for this argument. The passed GLContext specifies an OpenGL context with which to share textures, display lists and other OpenGL state, and may be null if sharing is not desired. See the note in the overview documentation on context sharing.

Method Detail

display

public void display()
Description copied from interface: GLAutoDrawable
Causes OpenGL rendering to be performed for this GLAutoDrawable by calling display for all registered GLEventListeners. Called automatically by the window system toolkit upon receiving a repaint() request. this routine may be called manually for better control over the rendering process. It is legal to call another GLAutoDrawable's display method from within the display callback.

Specified by:
display in interface GLAutoDrawable

paintComponent

protected void paintComponent(Graphics g)
Overridden to cause OpenGL rendering to be performed during repaint cycles. Subclasses which override this method must call super.paintComponent() in their paintComponent() method in order to function properly.

Overrides:

paintComponent in class javax.swing.JComponent


addNotify

public void addNotify()
Overridden to track when this component is added to a container. Subclasses which override this method must call super.addNotify() in their addNotify() method in order to function properly.

Overrides:

addNotify in class java.awt.Component


removeNotify

public void removeNotify()
Overridden to track when this component is removed from a container. Subclasses which override this method must call super.removeNotify() in their removeNotify() method in order to function properly.

Overrides:

removeNotify in class java.awt.Component


reshape

public void reshape(int x,
                    int y,
                    int width,
                    int height)
Overridden to cause GLDrawableHelper.reshape(javax.media.opengl.GLAutoDrawable, int, int, int, int) to be called on all registered GLEventListeners. Subclasses which override this method must call super.reshape() in their reshape() method in order to function properly.

Overrides:

reshape in class java.awt.Component


setOpaque

public void setOpaque(boolean opaque)

addGLEventListener

public void addGLEventListener(GLEventListener listener)
Description copied from interface: GLAutoDrawable
Adds a GLEventListener to this drawable. If multiple listeners are added to a given drawable, they are notified of events in an arbitrary order.

Specified by:
addGLEventListener in interface GLAutoDrawable

removeGLEventListener

public void removeGLEventListener(GLEventListener listener)
Description copied from interface: GLAutoDrawable
Removes a GLEventListener from this drawable. Note that if this is done from within a particular drawable's GLEventListener handler (reshape, display, etc.) that it is not guaranteed that all other listeners will be evaluated properly during this update cycle.

Specified by:
removeGLEventListener in interface GLAutoDrawable

createContext

public GLContext createContext(GLContext shareWith)
Description copied from interface: GLDrawable
Creates a new context for drawing to this drawable that will optionally share display lists and other server-side OpenGL objects with the specified GLContext.

The GLContext share need not be associated with this GLDrawable and may be null if sharing of display lists and other objects is not desired. See the note in the overview documentation on context sharing.

Specified by:
createContext in interface GLDrawable

setRealized

public void setRealized(boolean realized)
Description copied from interface: GLDrawable
Indicates to on-screen GLDrawable implementations whether the underlying window has been created and can be drawn into. This method must be called from GLDrawables obtained from the GLDrawableFactory via the GLDrawableFactory.getGLDrawable() method. It must typically be called with an argument of true in the addNotify method of components performing OpenGL rendering and with an argument of false in the removeNotify method. Calling this method has no other effects. For example, if removeNotify is called on a Canvas implementation for which a GLDrawable has been created, it is also necessary to destroy all OpenGL contexts associated with that GLDrawable. This is not done automatically by the implementation. It is not necessary to call setRealized on a GLCanvas, a GLJPanel, or a GLPbuffer, as these perform the appropriate calls on their underlying GLDrawables internally..

Specified by:
setRealized in interface GLDrawable

getContext

public GLContext getContext()
Description copied from interface: GLAutoDrawable
Returns the context associated with this drawable. The returned context will be synchronized.

Specified by:
getContext in interface GLAutoDrawable

getGL

public GL getGL()
Description copied from interface: GLAutoDrawable
Returns the GL pipeline object this GLAutoDrawable uses. If this method is called outside of the GLEventListener's callback methods (init, display, etc.) it may return null. Users should not rely on the identity of the returned GL object; for example, users should not maintain a hash table with the GL object as the key. Additionally, the GL object should not be cached in client code, but should be re-fetched from the GLAutoDrawable at the beginning of each call to init, display, etc.

Specified by:
getGL in interface GLAutoDrawable

setGL

public void setGL(GL gl)
Description copied from interface: GLAutoDrawable
Sets the GL pipeline object this GLAutoDrawable uses. This should only be called from within the GLEventListener's callback methods, and usually only from within the init() method, in order to install a composable pipeline. See the JOGL demos for examples.

Specified by:
setGL in interface GLAutoDrawable

setAutoSwapBufferMode

public void setAutoSwapBufferMode(boolean onOrOff)
Description copied from interface: GLAutoDrawable
Enables or disables automatic buffer swapping for this drawable. By default this property is set to true; when true, after all GLEventListeners have been called for a display() event, the front and back buffers are swapped, displaying the results of the render. When disabled, the user is responsible for calling GLDrawable.swapBuffers() manually.

Specified by:
setAutoSwapBufferMode in interface GLAutoDrawable

getAutoSwapBufferMode

public boolean getAutoSwapBufferMode()
Description copied from interface: GLAutoDrawable
Indicates whether automatic buffer swapping is enabled for this drawable. See GLAutoDrawable.setAutoSwapBufferMode(boolean).

Specified by:
getAutoSwapBufferMode in interface GLAutoDrawable

swapBuffers

public void swapBuffers()
Description copied from interface: GLDrawable
Swaps the front and back buffers of this drawable. For GLAutoDrawable implementations, when automatic buffer swapping is enabled (as is the default), this method is called automatically and should not be called by the end user.

Specified by:
swapBuffers in interface GLDrawable

shouldPreserveColorBufferIfTranslucent

public boolean shouldPreserveColorBufferIfTranslucent()
For a translucent GLJPanel (one for which setOpaque(false) has been called), indicates whether the application should preserve the OpenGL color buffer (GL_COLOR_BUFFER_BIT) for correct rendering of the GLJPanel and underlying widgets which may show through portions of the GLJPanel with alpha values less than 1. Most Swing implementations currently expect the GLJPanel to be completely cleared (e.g., by glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)), but for certain optimized Swing implementations which use OpenGL internally, it may be possible to perform OpenGL rendering using the GLJPanel into the same OpenGL drawable as the Swing implementation uses.



Copyright 2005 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.