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Java™ Binding for the OpenGL® API
/**
* Copyright 2012 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.swt;
import javax.media.nativewindow.AbstractGraphicsConfiguration;
import javax.media.nativewindow.AbstractGraphicsDevice;
import javax.media.nativewindow.AbstractGraphicsScreen;
import javax.media.nativewindow.Capabilities;
import javax.media.nativewindow.CapabilitiesImmutable;
import javax.media.nativewindow.GraphicsConfigurationFactory;
import javax.media.nativewindow.NativeSurface;
import javax.media.nativewindow.NativeWindow;
import javax.media.nativewindow.NativeWindowException;
import javax.media.nativewindow.NativeWindowFactory;
import javax.media.nativewindow.SurfaceUpdatedListener;
import javax.media.nativewindow.WindowClosingProtocol;
import javax.media.nativewindow.util.Insets;
import javax.media.nativewindow.util.InsetsImmutable;
import javax.media.nativewindow.util.Point;
import javax.media.opengl.GLCapabilities;
import jogamp.nativewindow.macosx.OSXUtil;
import jogamp.newt.Debug;
import jogamp.newt.swt.SWTEDTUtil;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import com.jogamp.nativewindow.swt.SWTAccessor;
import com.jogamp.newt.Display;
import com.jogamp.newt.Window;
import com.jogamp.newt.event.WindowEvent;
import com.jogamp.newt.util.EDTUtil;
/**
* SWT {@link Canvas} containing a NEWT {@link Window} using native parenting.
*
* Implementation allows use of custom {@link GLCapabilities}.
*
*/
public class NewtCanvasSWT extends Canvas implements WindowClosingProtocol {
private static final boolean DEBUG = Debug.debug("Window");
private static final boolean isOSX = NativeWindowFactory.TYPE_MACOSX == NativeWindowFactory.getNativeWindowType(false);
private final AbstractGraphicsScreen screen;
private WindowClosingMode newtChildCloseOp = WindowClosingMode.DISPOSE_ON_CLOSE;
private volatile Rectangle clientArea;
private volatile SWTNativeWindow nativeWindow;
private volatile Window newtChild = null;
private volatile boolean newtChildReady = false; // ready if SWTEDTUtil is set and newtChild parented
private volatile boolean postSetSize = false; // pending resize
/**
* Creates an instance using {@link #NewtCanvasSWT(Composite, int, Window)}
* on the SWT thread.
*
*
* Note: The NEWT child {@link Display}'s {@link EDTUtil} is being set to an SWT conform implementation
* via {@link Display#setEDTUtil(EDTUtil)}.
*
*
* @param parent the SWT composite
* @param style additional styles to SWT#NO_BACKGROUND
* @param child optional preassigned {@link #Window}, maybe null
* @return a new instance
*/
public static NewtCanvasSWT create(final Composite parent, final int style, final Window child) {
final NewtCanvasSWT[] res = new NewtCanvasSWT[] { null };
parent.getDisplay().syncExec( new Runnable() {
public void run() {
res[0] = new NewtCanvasSWT( parent, style, child);
}
});
return res[0];
}
/**
* Instantiates a NewtCanvas with a NEWT child.
*
*
* Note: The NEWT child {@link Display}'s {@link EDTUtil} is being set to an SWT conform implementation
* via {@link Display#setEDTUtil(EDTUtil)}.
*
*
* @param parent the SWT composite
* @param style additional styles to SWT#NO_BACKGROUND
* @param child optional preassigned {@link #Window}, maybe null
*/
public NewtCanvasSWT(final Composite parent, final int style, Window child) {
super(parent, style | SWT.NO_BACKGROUND);
SWTAccessor.setRealized(this, true);
clientArea = getClientArea();
final AbstractGraphicsDevice device = SWTAccessor.getDevice(this);
screen = SWTAccessor.getScreen(device, -1 /* default */);
nativeWindow = null;
if(null != child) {
setNEWTChild(child);
}
final Listener listener = new Listener () {
@Override
public void handleEvent (Event event) {
switch (event.type) {
case SWT.Paint:
if( null != nativeWindow || validateNative() ) {
if( newtChildReady ) {
if( postSetSize ) {
newtChild.setSize(clientArea.width, clientArea.height);
postSetSize = false;
}
newtChild.windowRepaint(0, 0, clientArea.width, clientArea.height);
}
}
break;
case SWT.Resize:
updateSizeCheck();
break;
case SWT.Dispose:
NewtCanvasSWT.this.dispose();
break;
}
}
};
addListener (SWT.Resize, listener);
addListener (SWT.Paint, listener);
addListener (SWT.Dispose, listener);
}
/** assumes nativeWindow == null ! */
protected final boolean validateNative() {
updateSizeCheck();
final Rectangle nClientArea = clientArea;
if(0 >= nClientArea.width || 0 >= nClientArea.height) {
return false;
}
screen.getDevice().open();
/* Native handle for the control, used to associate with GLContext */
final long nativeWindowHandle = SWTAccessor.getWindowHandle(this);
final int visualID = SWTAccessor.getNativeVisualID(screen.getDevice(), nativeWindowHandle);
final boolean visualIDValid = NativeWindowFactory.isNativeVisualIDValidForProcessing(visualID);
if(DEBUG) {
System.err.println("NewtCanvasSWT.validateNative() windowHandle 0x"+Long.toHexString(nativeWindowHandle)+", visualID 0x"+Integer.toHexString(visualID)+", valid "+visualIDValid);
}
if( visualIDValid ) {
/* Get the nativewindow-Graphics Device associated with this control (which is determined by the parent Composite).
* Note: SWT is owner of the native handle, hence no closing operation will be a NOP. */
final CapabilitiesImmutable caps = new Capabilities();
final GraphicsConfigurationFactory factory = GraphicsConfigurationFactory.getFactory(screen.getDevice(), caps);
final AbstractGraphicsConfiguration config = factory.chooseGraphicsConfiguration( caps, caps, null, screen, visualID );
if(DEBUG) {
System.err.println("NewtCanvasSWT.validateNative() factory: "+factory+", windowHandle 0x"+Long.toHexString(nativeWindowHandle)+", visualID 0x"+Integer.toHexString(visualID)+", chosen config: "+config);
// Thread.dumpStack();
}
if (null == config) {
throw new NativeWindowException("Error choosing GraphicsConfiguration creating window: "+this);
}
nativeWindow = new SWTNativeWindow(config, nativeWindowHandle);
reparentWindow( true );
}
return null != nativeWindow;
}
protected final void updateSizeCheck() {
final Rectangle oClientArea = clientArea;
final Rectangle nClientArea = getClientArea();
if ( nClientArea != null &&
( nClientArea.width != oClientArea.width || nClientArea.height != oClientArea.height )
) {
clientArea = nClientArea; // write back new value
if(DEBUG) {
final long nsh = newtChildReady ? newtChild.getSurfaceHandle() : 0;
System.err.println("NewtCanvasSWT.sizeChanged: ("+Thread.currentThread().getName()+"): newtChildReady "+newtChildReady+", "+nClientArea.x+"/"+nClientArea.y+" "+nClientArea.width+"x"+nClientArea.height+" - surfaceHandle 0x"+Long.toHexString(nsh));
}
if( newtChildReady ) {
newtChild.setSize(clientArea.width, clientArea.height);
} else {
postSetSize = true;
}
}
}
@Override
public void update() {
// don't paint background etc .. nop avoids flickering
}
/**
* 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()
*/
@Override
public void dispose() {
if( null != newtChild ) {
if(DEBUG) {
System.err.println("NewtCanvasSWT.dispose.0: EDTUtil cur "+newtChild.getScreen().getDisplay().getEDTUtil()+
",\n\t"+newtChild);
}
configureNewtChild(false);
newtChild.setVisible(false);
newtChild.reparentWindow(null);
newtChild.destroy();
newtChild = null;
}
screen.getDevice().close();
nativeWindow = null;
super.dispose();
}
/** @return this SWT Canvas NativeWindow representation, may be null in case it has not been realized. */
public NativeWindow getNativeWindow() { return nativeWindow; }
public WindowClosingMode getDefaultCloseOperation() {
return newtChildCloseOp; // TODO: implement ?!
}
public WindowClosingMode setDefaultCloseOperation(WindowClosingMode op) {
return newtChildCloseOp = op; // TODO: implement ?!
}
boolean isParent() {
return null!=newtChild ;
}
boolean isFullscreen() {
return null != newtChild && newtChild.isFullscreen();
}
/**
* 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.
*
*
* Note: The NEWT child {@link Display}'s {@link EDTUtil} is being set to an SWT conform implementation
* via {@link Display#setEDTUtil(EDTUtil)}.
*
* @return the previous attached newt child.
*/
public Window setNEWTChild(final Window newChild) {
final Window prevChild = newtChild;
if(DEBUG) {
System.err.println("NewtCanvasSWT.setNEWTChild.0: win "+newtWinHandleToHexString(prevChild)+" -> "+newtWinHandleToHexString(newChild));
}
// remove old one
if(null != newtChild) {
reparentWindow( false );
newtChild = null;
}
// add new one, reparent only if ready
newtChild = newChild;
if(null != nativeWindow && null != newChild) {
reparentWindow( true );
}
return prevChild;
}
/** @return the current NEWT child */
public Window getNEWTChild() {
return newtChild;
}
@Override
public boolean setParent(Composite parent) {
return super.setParent(parent);
}
/* package */ void configureNewtChild(boolean attach) {
newtChildReady = attach;
if( null != newtChild ) {
newtChild.setKeyboardFocusHandler(null);
if(attach) {
newtChildCloseOp = newtChild.setDefaultCloseOperation(WindowClosingMode.DO_NOTHING_ON_CLOSE);
} else {
newtChild.setFocusAction(null);
newtChild.setDefaultCloseOperation(newtChildCloseOp);
}
}
}
void reparentWindow(boolean add) {
if( null == newtChild ) {
return; // nop
}
if(DEBUG) {
System.err.println("NewtCanvasSWT.reparentWindow.0: add="+add+", win "+newtWinHandleToHexString(newtChild)+", EDTUtil: cur "+newtChild.getScreen().getDisplay().getEDTUtil());
}
newtChild.setFocusAction(null); // no AWT focus traversal ..
if(add) {
updateSizeCheck();
final int w = clientArea.width;
final int h = clientArea.height;
// set SWT EDT and start it
{
final Display newtDisplay = newtChild.getScreen().getDisplay();
final EDTUtil edtUtil = new SWTEDTUtil(newtDisplay, getDisplay());
edtUtil.restart();
newtDisplay.setEDTUtil( edtUtil );
}
newtChild.setSize(w, h);
newtChild.reparentWindow(nativeWindow);
newtChild.setVisible(true);
configureNewtChild(true);
newtChild.sendWindowEvent(WindowEvent.EVENT_WINDOW_RESIZED); // trigger a resize/relayout to listener
// force this SWT Canvas to be focus-able,
// since it is completely covered by the newtChild (z-order).
setEnabled(true);
} else {
configureNewtChild(false);
newtChild.setVisible(false);
newtChild.reparentWindow(null);
}
if(DEBUG) {
System.err.println("NewtCanvasSWT.reparentWindow.X: add="+add+", win "+newtWinHandleToHexString(newtChild)+", EDTUtil: cur "+newtChild.getScreen().getDisplay().getEDTUtil());
}
}
private final void requestFocusNEWTChild() {
if( newtChildReady ) {
newtChild.setFocusAction(null);
newtChild.requestFocus();
}
}
@Override
public boolean forceFocus() {
final boolean res = NewtCanvasSWT.super.forceFocus();
requestFocusNEWTChild();
return res;
}
private class SWTNativeWindow implements NativeWindow {
private final AbstractGraphicsConfiguration config;
private final long nativeWindowHandle;
private final InsetsImmutable insets; // only required to allow proper client position calculation on OSX
public SWTNativeWindow(AbstractGraphicsConfiguration config, long nativeWindowHandle) {
this.config = config;
this.nativeWindowHandle = nativeWindowHandle;
if(isOSX) {
this.insets = OSXUtil.GetInsets(nativeWindowHandle);
} else {
this.insets = new Insets(0, 0, 0, 0);
}
}
@Override
public int lockSurface() throws NativeWindowException, RuntimeException {
return NativeSurface.LOCK_SUCCESS;
}
@Override
public void unlockSurface() { }
@Override
public boolean isSurfaceLockedByOtherThread() {
return false;
}
@Override
public Thread getSurfaceLockOwner() {
return null;
}
@Override
public boolean surfaceSwap() {
return false;
}
@Override
public void addSurfaceUpdatedListener(SurfaceUpdatedListener l) { }
@Override
public void addSurfaceUpdatedListener(int index, SurfaceUpdatedListener l) throws IndexOutOfBoundsException {
}
@Override
public void removeSurfaceUpdatedListener(SurfaceUpdatedListener l) { }
@Override
public long getSurfaceHandle() {
return 0;
}
@Override
public int getWidth() {
return clientArea.width;
}
@Override
public int getHeight() {
return clientArea.height;
}
@Override
public AbstractGraphicsConfiguration getGraphicsConfiguration() {
return config;
}
@Override
public long getDisplayHandle() {
return config.getScreen().getDevice().getHandle();
}
@Override
public int getScreenIndex() {
return config.getScreen().getIndex();
}
@Override
public void surfaceUpdated(Object updater, NativeSurface ns, long when) { }
@Override
public void destroy() { }
@Override
public NativeWindow getParent() {
return null;
}
@Override
public long getWindowHandle() {
return nativeWindowHandle;
}
@Override
public InsetsImmutable getInsets() {
return insets;
}
@Override
public int getX() {
return 0;
}
@Override
public int getY() {
return 0;
}
@Override
public Point getLocationOnScreen(Point point) {
if( isOSX ) {
final Point los = OSXUtil.GetLocationOnScreen(nativeWindowHandle, false, 0, 0);
// top-level position -> client window position
los.setX(los.getX() + insets.getLeftWidth());
los.setY(los.getY() + insets.getTopHeight());
if(null!=point) {
return point.translate(los);
} else {
return los;
}
} else {
// client position on 'normal' windowing systems is 0/0
if(null == point) {
point = new Point(0, 0);
}
return point;
}
}
@Override
public boolean hasFocus() {
return isFocusControl();
}
};
static String newtWinHandleToHexString(Window w) {
return null != w ? toHexString(w.getWindowHandle()) : "nil";
}
static String toHexString(long l) {
return "0x"+Long.toHexString(l);
}
}