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Java™ Binding for the OpenGL® API
/**
* Copyright 2010 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package com.jogamp.newt.awt;
import java.awt.AWTKeyStroke;
import java.awt.Canvas;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.GraphicsConfiguration;
import java.awt.KeyboardFocusManager;
import java.beans.Beans;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.lang.reflect.Method;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.Set;
import javax.media.nativewindow.NativeWindow;
import javax.media.nativewindow.OffscreenLayerOption;
import javax.media.nativewindow.WindowClosingProtocol;
import javax.swing.MenuSelectionManager;
import jogamp.nativewindow.awt.AWTMisc;
import jogamp.newt.Debug;
import jogamp.newt.WindowImpl;
import jogamp.newt.awt.NewtFactoryAWT;
import jogamp.newt.awt.event.AWTParentWindowAdapter;
import jogamp.newt.driver.DriverClearFocus;
import com.jogamp.common.os.Platform;
import com.jogamp.common.util.awt.AWTEDTExecutor;
import com.jogamp.nativewindow.awt.AWTWindowClosingProtocol;
import com.jogamp.nativewindow.awt.JAWTWindow;
import com.jogamp.newt.Display;
import com.jogamp.newt.Window;
import com.jogamp.newt.event.KeyEvent;
import com.jogamp.newt.event.KeyListener;
import com.jogamp.newt.event.WindowAdapter;
import com.jogamp.newt.event.WindowEvent;
import com.jogamp.newt.event.WindowListener;
import com.jogamp.newt.event.awt.AWTAdapter;
import com.jogamp.newt.event.awt.AWTKeyAdapter;
import com.jogamp.newt.event.awt.AWTMouseAdapter;
/**
* AWT {@link java.awt.Canvas Canvas} containing a NEWT {@link Window} using native parenting.
*
* Offscreen Layer Remarks
*
* {@link OffscreenLayerOption#setShallUseOffscreenLayer(boolean) setShallUseOffscreenLayer(true)}
* maybe called to use an offscreen drawable (FBO or PBuffer) allowing
* the underlying JAWT mechanism to composite the image, if supported.
*/
@SuppressWarnings("serial")
public class NewtCanvasAWT extends java.awt.Canvas implements WindowClosingProtocol, OffscreenLayerOption {
public static final boolean DEBUG = Debug.debug("Window");
private JAWTWindow jawtWindow = null;
private boolean shallUseOffscreenLayer = false;
private Window newtChild = null;
private boolean newtChildAttached = false;
private boolean isOnscreen = true;
private WindowClosingMode newtChildCloseOp;
private AWTParentWindowAdapter awtAdapter = null;
private AWTAdapter awtMouseAdapter = null;
private AWTAdapter awtKeyAdapter = null;
private AWTWindowClosingProtocol awtWindowClosingProtocol =
new AWTWindowClosingProtocol(this, new Runnable() {
public void run() {
NewtCanvasAWT.this.destroyImpl(false /* removeNotify */, true /* windowClosing */);
}
}, new Runnable() {
public void run() {
if( newtChild != null ) {
newtChild.sendWindowEvent(WindowEvent.EVENT_WINDOW_DESTROY_NOTIFY);
}
}
} );
/**
* Instantiates a NewtCanvas without a NEWT child.
*/
public NewtCanvasAWT() {
super();
}
/**
* Instantiates a NewtCanvas without a NEWT child.
*/
public NewtCanvasAWT(GraphicsConfiguration gc) {
super(gc);
}
/**
* Instantiates a NewtCanvas with a NEWT child.
*/
public NewtCanvasAWT(Window child) {
super();
setNEWTChild(child);
}
/**
* Instantiates a NewtCanvas with a NEWT child.
*/
public NewtCanvasAWT(GraphicsConfiguration gc, Window child) {
super(gc);
setNEWTChild(child);
}
public void setShallUseOffscreenLayer(boolean v) {
shallUseOffscreenLayer = v;
}
public final boolean getShallUseOffscreenLayer() {
return shallUseOffscreenLayer;
}
public final boolean isOffscreenLayerSurfaceEnabled() {
return jawtWindow.isOffscreenLayerSurfaceEnabled();
}
/**
* Returns true if the AWT component is parented to an {@link java.applet.Applet},
* otherwise false. This information is valid only after {@link #addNotify()} is issued,
* ie. before adding the component to the AWT tree and make it visible.
*/
public boolean isApplet() {
return jawtWindow.isApplet();
}
boolean isParent() {
return null!=newtChild && jawtWindow == newtChild.getParent();
}
boolean isFullscreen() {
return null != newtChild && newtChild.isFullscreen();
}
class FocusAction implements Window.FocusRunnable {
public boolean run() {
final boolean isParent = isParent();
final boolean isFullscreen = isFullscreen();
if(DEBUG) {
System.err.println("NewtCanvasAWT.FocusAction: "+Display.getThreadName()+", isOnscreen "+isOnscreen+", hasFocus "+hasFocus()+", isParent "+isParent+", isFS "+isFullscreen);
}
if(isParent && !isFullscreen) {
// Newt-EDT -> AWT-EDT may freeze Window's native peer requestFocus.
if(!hasFocus()) {
// Acquire the AWT focus 1st for proper AWT traversal
NewtCanvasAWT.super.requestFocus();
}
if(isOnscreen) {
// Remove the AWT focus in favor of the native NEWT focus
KeyboardFocusManager.getCurrentKeyboardFocusManager().clearGlobalFocusOwner();
}
}
return false; // NEWT shall proceed requesting the native focus
}
}
private FocusAction focusAction = new FocusAction();
WindowListener clearAWTMenusOnNewtFocus = new WindowAdapter() {
@Override
public void windowResized(WindowEvent e) {
updateLayoutSize();
}
@Override
public void windowGainedFocus(WindowEvent arg0) {
if( isParent() && !isFullscreen() ) {
MenuSelectionManager.defaultManager().clearSelectedPath();
}
}
};
class FocusTraversalKeyListener implements KeyListener {
public void keyPressed(KeyEvent e) {
if( isParent() && !isFullscreen() ) {
handleKey(e, false);
}
}
public void keyReleased(KeyEvent e) {
if( isParent() && !isFullscreen() ) {
handleKey(e, true);
}
}
void handleKey(KeyEvent evt, boolean onRelease) {
if(null == keyboardFocusManager) {
throw new InternalError("XXX");
}
final AWTKeyStroke ks = AWTKeyStroke.getAWTKeyStroke(evt.getKeyCode(), evt.getModifiers(), onRelease);
boolean suppress = false;
if(null != ks) {
final Set fwdKeys = keyboardFocusManager.getDefaultFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS);
final Set bwdKeys = keyboardFocusManager.getDefaultFocusTraversalKeys(KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS);
if(fwdKeys.contains(ks)) {
final Component nextFocus = AWTMisc.getNextFocus(NewtCanvasAWT.this, true /* forward */);
if(DEBUG) {
System.err.println("NewtCanvasAWT.focusKey (fwd): "+ks+", current focusOwner "+keyboardFocusManager.getFocusOwner()+", hasFocus: "+hasFocus()+", nextFocus "+nextFocus);
}
// Newt-EDT -> AWT-EDT may freeze Window's native peer requestFocus.
nextFocus.requestFocus();
suppress = true;
} else if(bwdKeys.contains(ks)) {
final Component prevFocus = AWTMisc.getNextFocus(NewtCanvasAWT.this, false /* forward */);
if(DEBUG) {
System.err.println("NewtCanvasAWT.focusKey (bwd): "+ks+", current focusOwner "+keyboardFocusManager.getFocusOwner()+", hasFocus: "+hasFocus()+", prevFocus "+prevFocus);
}
// Newt-EDT -> AWT-EDT may freeze Window's native peer requestFocus.
prevFocus.requestFocus();
suppress = true;
}
}
if(suppress) {
evt.setConsumed(true);
}
if(DEBUG) {
System.err.println("NewtCanvasAWT.focusKey: XXX: "+ks);
}
}
}
private final FocusTraversalKeyListener newtFocusTraversalKeyListener = new FocusTraversalKeyListener();
class FocusPropertyChangeListener implements PropertyChangeListener {
public void propertyChange(PropertyChangeEvent evt) {
final Object oldF = evt.getOldValue();
final Object newF = evt.getNewValue();
final boolean isParent = isParent();
final boolean isFullscreen = isFullscreen();
if(DEBUG) {
System.err.println("NewtCanvasAWT.FocusProperty: "+evt.getPropertyName()+", src "+evt.getSource()+", "+oldF+" -> "+newF+", isParent "+isParent+", isFS "+isFullscreen);
}
if(isParent && !isFullscreen) {
if(oldF == NewtCanvasAWT.this && newF == null) {
// focus traversal to NEWT - NOP
if(DEBUG) {
System.err.println("NewtCanvasAWT.FocusProperty: NEWT focus traversal");
}
} else if(null != newF && newF != NewtCanvasAWT.this) {
// focus traversal to another AWT component
if(DEBUG) {
System.err.println("NewtCanvasAWT.FocusProperty: lost focus - clear focus");
}
if(newtChild.getDelegatedWindow() instanceof DriverClearFocus) {
((DriverClearFocus)newtChild.getDelegatedWindow()).clearFocus();
}
}
}
}
}
private final FocusPropertyChangeListener focusPropertyChangeListener = new FocusPropertyChangeListener();
private volatile KeyboardFocusManager keyboardFocusManager = null;
/**
* Sets a new NEWT child, provoking reparenting.
*
* A previously detached newChild will be released to top-level status
* and made invisible.
*
*
* Note: When switching NEWT child's, detaching the previous first via setNEWTChild(null)
* produced much cleaner visual results.
*
* @return the previous attached newt child.
*/
public Window setNEWTChild(Window newChild) {
final Window prevChild = newtChild;
if(DEBUG) {
System.err.println("NewtCanvasAWT.setNEWTChild.0: win "+newtWinHandleToHexString(prevChild)+" -> "+newtWinHandleToHexString(newChild));
}
final java.awt.Container cont = AWTMisc.getContainer(this);
// remove old one
if(null != newtChild) {
detachNewtChild( cont );
newtChild = null;
}
// add new one, reparent only if ready
newtChild = newChild;
updateLayoutSize();
// will be done later at paint/display/..: attachNewtChild(cont);
return prevChild;
}
private final void updateLayoutSize() {
if( null != newtChild ) {
// use NEWT child's size for min/pref size!
java.awt.Dimension minSize = new java.awt.Dimension(newtChild.getWidth(), newtChild.getHeight());
setMinimumSize(minSize);
setPreferredSize(minSize);
}
}
/** @return the current NEWT child */
public Window getNEWTChild() {
return newtChild;
}
/** @return this AWT Canvas NativeWindow representation, may be null in case {@link #removeNotify()} has been called,
* or {@link #addNotify()} hasn't been called yet.*/
public NativeWindow getNativeWindow() { return jawtWindow; }
public WindowClosingMode getDefaultCloseOperation() {
return awtWindowClosingProtocol.getDefaultCloseOperation();
}
public WindowClosingMode setDefaultCloseOperation(WindowClosingMode op) {
return awtWindowClosingProtocol.setDefaultCloseOperation(op);
}
@Override
public void addNotify() {
if( Beans.isDesignTime() ) {
super.addNotify();
} else {
// before native peer is valid: X11
disableBackgroundErase();
// creates the native peer
super.addNotify();
// after native peer is valid: Windows
disableBackgroundErase();
jawtWindow = NewtFactoryAWT.getNativeWindow(this, null != newtChild ? newtChild.getRequestedCapabilities() : null);
jawtWindow.setShallUseOffscreenLayer(shallUseOffscreenLayer);
if(DEBUG) {
// if ( isShowing() == false ) -> Container was not visible yet.
// if ( isShowing() == true ) -> Container is already visible.
System.err.println("NewtCanvasAWT.addNotify: win "+newtWinHandleToHexString(newtChild)+
", comp "+this+", visible "+isVisible()+", showing "+isShowing()+
", displayable "+isDisplayable()+", cont "+AWTMisc.getContainer(this));
}
}
awtWindowClosingProtocol.addClosingListener();
}
@Override
public void removeNotify() {
awtWindowClosingProtocol.removeClosingListener();
if( Beans.isDesignTime() ) {
super.removeNotify();
} else {
destroyImpl(true /* removeNotify */, false /* windowClosing */);
super.removeNotify();
}
}
/**
* Destroys this resource:
*
* - Make the NEWT Child invisible
* - Disconnects the NEWT Child from this Canvas NativeWindow, reparent to NULL
* - Issues
destroy() on the NEWT Child
* - Remove reference to the NEWT Child
*
* @see Window#destroy()
*/
public final void destroy() {
destroyImpl(false /* removeNotify */, false /* windowClosing */);
}
private final void destroyImpl(boolean removeNotify, boolean windowClosing) {
if( null !=newtChild ) {
java.awt.Container cont = AWTMisc.getContainer(this);
if(DEBUG) {
System.err.println("NewtCanvasAWT.destroy(removeNotify "+removeNotify+", windowClosing "+windowClosing+"): nw "+newtWinHandleToHexString(newtChild)+", from "+cont);
}
detachNewtChild(cont);
if( !removeNotify ) {
final Window cWin = newtChild;
final Window dWin = cWin.getDelegatedWindow();
newtChild=null;
if( windowClosing && dWin instanceof WindowImpl ) {
((WindowImpl)dWin).windowDestroyNotify(true);
} else {
cWin.destroy();
}
}
}
if( ( removeNotify || windowClosing ) && null!=jawtWindow ) {
NewtFactoryAWT.destroyNativeWindow(jawtWindow);
jawtWindow=null;
}
}
@Override
public void paint(Graphics g) {
if( validateComponent(true) ) {
newtChild.windowRepaint(0, 0, getWidth(), getHeight());
}
}
@Override
public void update(Graphics g) {
paint(g);
}
@SuppressWarnings("deprecation")
@Override
public void reshape(int x, int y, int width, int height) {
synchronized (getTreeLock()) { // super.reshape(..) claims tree lock, so we do extend it's lock over reshape
super.reshape(x, y, width, height);
if(DEBUG) {
System.err.println("NewtCanvasAWT.reshape: "+x+"/"+y+" "+width+"x"+height);
}
if( validateComponent(true) ) {
// newtChild.setSize(width, height);
}
}
}
private final void requestFocusNEWTChild() {
if(null!=newtChild) {
newtChild.setFocusAction(null);
if(isOnscreen) {
KeyboardFocusManager.getCurrentKeyboardFocusManager().clearGlobalFocusOwner();
}
newtChild.requestFocus();
newtChild.setFocusAction(focusAction);
}
}
@Override
public void requestFocus() {
super.requestFocus();
requestFocusNEWTChild();
}
@Override
public boolean requestFocus(boolean temporary) {
final boolean res = super.requestFocus(temporary);
if(res) {
requestFocusNEWTChild();
}
return res;
}
@Override
public boolean requestFocusInWindow() {
final boolean res = super.requestFocusInWindow();
if(res) {
requestFocusNEWTChild();
}
return res;
}
@Override
public boolean requestFocusInWindow(boolean temporary) {
final boolean res = super.requestFocusInWindow(temporary);
if(res) {
requestFocusNEWTChild();
}
return res;
}
private final boolean validateComponent(boolean attachNewtChild) {
if( Beans.isDesignTime() || !isDisplayable() ) {
return false;
}
if ( null == newtChild || null == jawtWindow ) {
return false;
}
if( 0 >= getWidth() || 0 >= getHeight() ) {
return false;
}
if( attachNewtChild && !newtChildAttached && null != newtChild ) {
attachNewtChild();
}
return true;
}
private final void configureNewtChild(boolean attach) {
if(null!=awtAdapter) {
awtAdapter.removeFrom(this);
awtAdapter=null;
}
if(null!=awtMouseAdapter) {
awtMouseAdapter.removeFrom(this);
awtMouseAdapter = null;
}
if(null!=awtKeyAdapter) {
awtKeyAdapter.removeFrom(this);
awtKeyAdapter = null;
}
if(null != keyboardFocusManager) {
keyboardFocusManager.removePropertyChangeListener("focusOwner", focusPropertyChangeListener);
keyboardFocusManager = null;
}
if( null != newtChild ) {
newtChild.setKeyboardFocusHandler(null);
if(attach) {
if(null == jawtWindow.getGraphicsConfiguration()) {
throw new InternalError("XXX");
}
isOnscreen = jawtWindow.getGraphicsConfiguration().getChosenCapabilities().isOnscreen();
awtAdapter = (AWTParentWindowAdapter) new AWTParentWindowAdapter(jawtWindow, newtChild).addTo(this);
awtAdapter.removeWindowClosingFrom(this); // we utilize AWTWindowClosingProtocol triggered destruction!
newtChild.addWindowListener(clearAWTMenusOnNewtFocus);
newtChild.setFocusAction(focusAction); // enable AWT focus traversal
newtChildCloseOp = newtChild.setDefaultCloseOperation(WindowClosingMode.DO_NOTHING_ON_CLOSE);
keyboardFocusManager = KeyboardFocusManager.getCurrentKeyboardFocusManager();
keyboardFocusManager.addPropertyChangeListener("focusOwner", focusPropertyChangeListener);
// force this AWT Canvas to be focus-able,
// since this it is completely covered by the newtChild (z-order).
setFocusable(true);
if(isOnscreen) {
// onscreen newt child needs to fwd AWT focus
newtChild.setKeyboardFocusHandler(newtFocusTraversalKeyListener);
} else {
// offscreen newt child requires AWT to fwd AWT key/mouse event
awtMouseAdapter = new AWTMouseAdapter(newtChild).addTo(this);
awtKeyAdapter = new AWTKeyAdapter(newtChild).addTo(this);
}
} else {
newtChild.removeWindowListener(clearAWTMenusOnNewtFocus);
newtChild.setFocusAction(null);
newtChild.setDefaultCloseOperation(newtChildCloseOp);
setFocusable(false);
}
}
}
private final void attachNewtChild() {
if( null == newtChild || null == jawtWindow || newtChildAttached ) {
return; // nop
}
if(DEBUG) {
// if ( isShowing() == false ) -> Container was not visible yet.
// if ( isShowing() == true ) -> Container is already visible.
System.err.println("NewtCanvasAWT.attachNewtChild.0 @ "+Thread.currentThread().getName()+": win "+newtWinHandleToHexString(newtChild)+
", EDTUtil: cur "+newtChild.getScreen().getDisplay().getEDTUtil()+
", comp "+this+", visible "+isVisible()+", showing "+isShowing()+", displayable "+isDisplayable()+
", cont "+AWTMisc.getContainer(this));
}
newtChildAttached = true;
newtChild.setFocusAction(null); // no AWT focus traversal ..
if(DEBUG) {
System.err.println("NewtCanvasAWT.attachNewtChild.1: newtChild: "+newtChild);
}
final int w = getWidth();
final int h = getHeight();
System.err.println("NewtCanvasAWT.attachNewtChild.2: size "+w+"x"+h);
newtChild.setVisible(false);
newtChild.setSize(w, h);
newtChild.reparentWindow(jawtWindow);
newtChild.addSurfaceUpdatedListener(jawtWindow);
if( Platform.OSType.MACOS == Platform.getOSType() && jawtWindow.isOffscreenLayerSurfaceEnabled() ) {
AWTEDTExecutor.singleton.invoke(false, forceRelayout);
}
newtChild.setVisible(true);
configureNewtChild(true);
newtChild.sendWindowEvent(WindowEvent.EVENT_WINDOW_RESIZED); // trigger a resize/relayout to listener
if(DEBUG) {
System.err.println("NewtCanvasAWT.attachNewtChild.X: win "+newtWinHandleToHexString(newtChild)+", EDTUtil: cur "+newtChild.getScreen().getDisplay().getEDTUtil()+", comp "+this);
}
}
private final Runnable forceRelayout = new Runnable() {
public void run() {
if(DEBUG) {
System.err.println("NewtCanvasAWT.forceRelayout.0");
}
// Hack to force proper native AWT layout incl. CALayer components on OSX
final java.awt.Component component = NewtCanvasAWT.this;
final int cW = component.getWidth();
final int cH = component.getHeight();
component.setSize(cW+1, cH+1);
component.setSize(cW, cH);
if(DEBUG) {
System.err.println("NewtCanvasAWT.forceRelayout.X");
}
} };
private final void detachNewtChild(java.awt.Container cont) {
if( null == newtChild || null == jawtWindow || !newtChildAttached ) {
return; // nop
}
if(DEBUG) {
// if ( isShowing() == false ) -> Container was not visible yet.
// if ( isShowing() == true ) -> Container is already visible.
System.err.println("NewtCanvasAWT.detachNewtChild.0: win "+newtWinHandleToHexString(newtChild)+
", EDTUtil: cur "+newtChild.getScreen().getDisplay().getEDTUtil()+
", comp "+this+", visible "+isVisible()+", showing "+isShowing()+", displayable "+isDisplayable()+
", cont "+cont);
}
newtChild.removeSurfaceUpdatedListener(jawtWindow);
newtChildAttached = false;
newtChild.setFocusAction(null); // no AWT focus traversal ..
configureNewtChild(false);
newtChild.setVisible(false);
newtChild.reparentWindow(null); // will destroy context (offscreen -> onscreen) and implicit detachSurfaceLayer
if(DEBUG) {
System.err.println("NewtCanvasAWT.detachNewtChild.X: win "+newtWinHandleToHexString(newtChild)+", EDTUtil: cur "+newtChild.getScreen().getDisplay().getEDTUtil()+", comp "+this);
}
}
// Disables the AWT's erasing of this Canvas's background on Windows
// in Java SE 6. This internal API is not available in previous
// releases, but the system property
// -Dsun.awt.noerasebackground=true can be specified to get similar
// results globally in previous releases.
private static boolean disableBackgroundEraseInitialized;
private static Method disableBackgroundEraseMethod;
private void disableBackgroundErase() {
if (!disableBackgroundEraseInitialized) {
try {
AccessController.doPrivileged(new PrivilegedAction