bundles/org.eclipse.swt/Eclipse SWT AWT/gtk/org/eclipse/swt/awt/SWT_AWT.java - platform/eclipse.platform.swt - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2019 IBM Corporation and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
  * SPDX-License-Identifier: EPL-2.0
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.swt.awt;

 /* AWT Imports */
 import java.awt.*;
 import java.awt.Canvas;
 import java.awt.event.*;
 import java.lang.reflect.*;

 /* SWT Imports */
 import org.eclipse.swt.*;
 import org.eclipse.swt.graphics.*;
 import org.eclipse.swt.graphics.Point;
 import org.eclipse.swt.graphics.Rectangle;
 import org.eclipse.swt.internal.*;
 import org.eclipse.swt.internal.gtk.*;
 import org.eclipse.swt.internal.gtk4.*;
 import org.eclipse.swt.widgets.*;
 import org.eclipse.swt.widgets.Composite;


 /**
  * This class provides a bridge between SWT and AWT, so that it
  * is possible to embed AWT components in SWT and vice versa.
  *
  * @see <a href="http://www.eclipse.org/swt/snippets/#awt">Swing/AWT snippets</a>
  * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
  *
  * @since 3.0
  */
 public class SWT_AWT {

 	/**
 	 * The name of the embedded Frame class. The default class name
 	 * for the platform will be used if <code>null</code>.
 	 */
 	public static String embeddedFrameClass;

 	/**
 	 * Key for looking up the embedded frame for a Composite using
 	 * getData().
 	 */
 	static String EMBEDDED_FRAME_KEY = "org.eclipse.swt.awt.SWT_AWT.embeddedFrame";

 static boolean loaded, swingInitialized;

 static native final long getAWTHandle (Object canvas);
 static native final void setDebug (Frame canvas, boolean debug);
 static native final Object initFrame (long handle, String className);
 static native final void validateWithBounds (Frame frame, int x, int y, int w, int h);
 static native final void synthesizeWindowActivation (Frame frame, boolean doActivate);
 static native final void registerListeners (Frame frame);

 static synchronized void loadLibrary () {
 	if (loaded) return;
 	loaded = true;
 	/*
 	* Note that the jawt library is loaded explicitly
 	* because it cannot be found by the library loader.
 	* All exceptions are caught because the library may
 	* have been loaded already.
 	*/
 	try {
 		System.loadLibrary("jawt");
 	} catch (Throwable e) {}
 	Library.loadLibrary("swt-awt");
 }

 static synchronized void initializeSwing() {
 	if (swingInitialized) return;
 	swingInitialized = true;
 	/*
 	* Feature in GTK.  The default X error handler
 	* for GTK calls exit() after printing the X error.
 	* Normally, this isn't that big a problem for SWT
 	* applications because they don't cause X errors.
 	* However, sometimes X errors are generated by AWT
 	* that make SWT exit.  The fix is to hide all X
 	* errors when AWT is running.
 	*/
 	if (OS.isX11()) {
 		GDK.gdk_x11_display_error_trap_push(GDK.gdk_display_get_default());
 	}
 	try {
 		/* Initialize the default focus traversal policy */
 		Class<?> clazz = Class.forName("javax.swing.UIManager");
 		Method method = clazz.getMethod("getDefaults");
 		if (method != null) method.invoke(clazz);
 	} catch (Throwable e) {}
 }

 /**
  * Returns a <code>java.awt.Frame</code> which is the embedded frame
  * associated with the specified composite.
  *
  * @param parent the parent <code>Composite</code> of the <code>java.awt.Frame</code>
  * @return a <code>java.awt.Frame</code> the embedded frame or <code>null</code>.
  *
  * @exception IllegalArgumentException <ul>
  *    <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
  * </ul>
  *
  * @since 3.2
  */
 public static Frame getFrame (Composite parent) {
 	if (parent == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
 	if ((parent.getStyle () & SWT.EMBEDDED) == 0) return null;
 	return (Frame)parent.getData(EMBEDDED_FRAME_KEY);
 }

 /**
  * Creates a new <code>java.awt.Frame</code>. This frame is the root for
  * the AWT components that will be embedded within the composite. In order
  * for the embedding to succeed, the composite must have been created
  * with the SWT.EMBEDDED style.
  * <p>
  * IMPORTANT: As of JDK1.5, the embedded frame does not receive mouse events.
  * When a lightweight component is added as a child of the embedded frame,
  * the cursor does not change. In order to work around both these problems, it is
  * strongly recommended that a heavyweight component such as <code>java.awt.Panel</code>
  * be added to the frame as the root of all components.
  * </p>
  *
  * @param parent the parent <code>Composite</code> of the new <code>java.awt.Frame</code>
  * @return a <code>java.awt.Frame</code> to be the parent of the embedded AWT components
  *
  * @exception IllegalArgumentException <ul>
  *    <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
  *    <li>ERROR_INVALID_ARGUMENT - if the parent Composite does not have the SWT.EMBEDDED style</li>
  * </ul>
  *
  * @since 3.0
  */
 public static Frame new_Frame (final Composite parent) {
 	if (OS.IsWin32) SWT.error (SWT.ERROR_NOT_IMPLEMENTED);
 	if (parent == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
 	if ((parent.getStyle () & SWT.EMBEDDED) == 0) {
 		SWT.error (SWT.ERROR_INVALID_ARGUMENT);
 	}
 	long handle = parent.embeddedHandle;
 	/*
 	 * Some JREs have implemented the embedded frame constructor to take an integer
 	 * and other JREs take a long.  To handle this binary incompatibility, use
 	 * reflection to create the embedded frame.
 	 */
 	String className = embeddedFrameClass != null ? embeddedFrameClass : "sun.awt.X11.XEmbeddedFrame";
 	try {
 		if (embeddedFrameClass != null) {
 			Class.forName(className);
 		}
 		loadLibrary();
 	} catch (ClassNotFoundException cne) {
 		SWT.error (SWT.ERROR_NOT_IMPLEMENTED, cne);
 	} catch (Throwable e) {
 		SWT.error (SWT.ERROR_UNSPECIFIED , e, " [Error while starting AWT]");
 	}
 	initializeSwing ();
 	final Frame [] frame = new Frame [1];
 	Object object = initFrame(handle, className);
 	if (object == null || !(object instanceof Frame)) {
 		SWT.error (SWT.ERROR_UNSPECIFIED , new Throwable(), " [Error while starting AWT]");
 	}
 	frame[0] = (Frame) object;
 	parent.setData(EMBEDDED_FRAME_KEY, frame[0]);
 	if (Device.DEBUG) {
 		setDebug(frame[0], true);
 	}
 	/* Call registerListeners() to make XEmbed focus traversal work */
 	registerListeners(frame[0]);

 	final AWTEventListener awtListener = event -> {
 		if (event.getID() == WindowEvent.WINDOW_OPENED) {
 			final Window window = (Window) event.getSource();
 			if (window.getParent() == frame[0]) {
 				parent.getDisplay().asyncExec(() -> {
 					if (parent.isDisposed()) return;
 					Shell shell = parent.getShell();
 					long awtHandle = getAWTHandle(window);
 					if (awtHandle == 0) return;

 					long xWindow;
 					if (GTK.GTK4) {
 						xWindow = GDK.gdk_x11_surface_get_xid(GTK4.gtk_native_get_surface (GTK.gtk_widget_get_native(shell.handle)));
 					} else {
 						xWindow = GDK.gdk_x11_window_get_xid (GTK.gtk_widget_get_window (GTK.gtk_widget_get_toplevel (shell.handle)));
 					}

 					OS.XSetTransientForHint(GDK.gdk_x11_display_get_xdisplay(GDK.gdk_display_get_default()), awtHandle, xWindow);
 				});
 			}
 		}
 	};

 	frame[0].getToolkit().addAWTEventListener(awtListener, AWTEvent.WINDOW_EVENT_MASK);
 	final Listener shellListener = e -> {
 		switch (e.type) {
 			case SWT.Deiconify:
 				EventQueue.invokeLater(() -> frame[0].dispatchEvent (new WindowEvent (frame[0], WindowEvent.WINDOW_DEICONIFIED)));
 				break;
 			case SWT.Iconify:
 				EventQueue.invokeLater(() -> frame[0].dispatchEvent (new WindowEvent (frame[0], WindowEvent.WINDOW_ICONIFIED)));
 				break;
 		}
 	};
 	Shell shell = parent.getShell ();
 	shell.addListener (SWT.Deiconify, shellListener);
 	shell.addListener (SWT.Iconify, shellListener);

 	Listener listener = e -> {
 		switch (e.type) {
 			case SWT.Dispose:
 				Shell shell1 = parent.getShell ();
 				shell1.removeListener (SWT.Deiconify, shellListener);
 				shell1.removeListener (SWT.Iconify, shellListener);
 				parent.setVisible(false);
 				EventQueue.invokeLater(() -> {
 					frame[0].getToolkit().removeAWTEventListener(awtListener);
 					frame[0].dispose ();
 				});
 				break;
 			case SWT.Resize:
 				final Rectangle clientArea = DPIUtil.autoScaleUp(parent.getClientArea());
 				EventQueue.invokeLater(() -> frame[0].setSize (clientArea.width, clientArea.height));
 				break;
 		}
 	};
 	parent.addListener (SWT.Dispose, listener);
 	parent.addListener (SWT.Resize, listener);

 	parent.getDisplay().asyncExec(() -> {
 		if (parent.isDisposed()) return;
 		final Rectangle clientArea = DPIUtil.autoScaleUp(parent.getClientArea());
 		EventQueue.invokeLater(() -> {
 			frame[0].setSize (clientArea.width, clientArea.height);
 			frame[0].validate ();
 		});
 	});
 	return frame[0];
 }

 /**
  * Creates a new <code>Shell</code>. This Shell is the root for
  * the SWT widgets that will be embedded within the AWT canvas.
  *
  * @param display the display for the new Shell
  * @param parent the parent <code>java.awt.Canvas</code> of the new Shell
  * @return a <code>Shell</code> to be the parent of the embedded SWT widgets
  *
  * @exception IllegalArgumentException <ul>
  *    <li>ERROR_NULL_ARGUMENT - if the display is null</li>
  *    <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
  *    <li>ERROR_INVALID_ARGUMENT - if the parent's peer is not created</li>
  * </ul>
  *
  * @since 3.0
  */
 public static Shell new_Shell (final Display display, final Canvas parent) {
 	if (OS.IsWin32) SWT.error (SWT.ERROR_NOT_IMPLEMENTED);
 	if (display == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
 	if (parent == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
 	long handle = 0;
 	try {
 		loadLibrary ();
 		handle = getAWTHandle (parent);
 	} catch (Throwable e) {
 		SWT.error (SWT.ERROR_NOT_IMPLEMENTED, e);
 	}
 	if (handle == 0) SWT.error (SWT.ERROR_INVALID_ARGUMENT, null, " [peer not created]");

 	final Shell shell = Shell.gtk_new (display, handle);
 	final ComponentListener listener = new ComponentAdapter () {
 		@Override
 		public void componentResized (ComponentEvent e) {
 			display.syncExec (() -> {
 				if (shell.isDisposed()) return;
 				Dimension dim = parent.getSize ();
 				shell.setSize (DPIUtil.autoScaleDown(new Point(dim.width, dim.height)));
 			});
 		}
 	};
 	parent.addComponentListener(listener);
 	shell.addListener(SWT.Dispose, event -> parent.removeComponentListener(listener));
 	shell.setVisible (true);
 	return shell;
 }
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2019 IBM Corporation and others.
	*
	* This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License 2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/legal/epl-2.0/
	*
	* SPDX-License-Identifier: EPL-2.0
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.swt.awt;

	/* AWT Imports */
	import java.awt.*;
	import java.awt.Canvas;
	import java.awt.event.*;
	import java.lang.reflect.*;

	/* SWT Imports */
	import org.eclipse.swt.*;
	import org.eclipse.swt.graphics.*;
	import org.eclipse.swt.graphics.Point;
	import org.eclipse.swt.graphics.Rectangle;
	import org.eclipse.swt.internal.*;
	import org.eclipse.swt.internal.gtk.*;
	import org.eclipse.swt.internal.gtk4.*;
	import org.eclipse.swt.widgets.*;
	import org.eclipse.swt.widgets.Composite;


	/**
	* This class provides a bridge between SWT and AWT, so that it
	* is possible to embed AWT components in SWT and vice versa.
	*
	* @see <a href="http://www.eclipse.org/swt/snippets/#awt">Swing/AWT snippets</a>
	* @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
	*
	* @since 3.0
	*/
	public class SWT_AWT {

	/**
	* The name of the embedded Frame class. The default class name
	* for the platform will be used if <code>null</code>.
	*/
	public static String embeddedFrameClass;

	/**
	* Key for looking up the embedded frame for a Composite using
	* getData().
	*/
	static String EMBEDDED_FRAME_KEY = "org.eclipse.swt.awt.SWT_AWT.embeddedFrame";

	static boolean loaded, swingInitialized;

	static native final long getAWTHandle (Object canvas);
	static native final void setDebug (Frame canvas, boolean debug);
	static native final Object initFrame (long handle, String className);
	static native final void validateWithBounds (Frame frame, int x, int y, int w, int h);
	static native final void synthesizeWindowActivation (Frame frame, boolean doActivate);
	static native final void registerListeners (Frame frame);

	static synchronized void loadLibrary () {
	if (loaded) return;
	loaded = true;
	/*
	* Note that the jawt library is loaded explicitly
	* because it cannot be found by the library loader.
	* All exceptions are caught because the library may
	* have been loaded already.
	*/
	try {
	System.loadLibrary("jawt");
	} catch (Throwable e) {}
	Library.loadLibrary("swt-awt");
	}

	static synchronized void initializeSwing() {
	if (swingInitialized) return;
	swingInitialized = true;
	/*
	* Feature in GTK. The default X error handler
	* for GTK calls exit() after printing the X error.
	* Normally, this isn't that big a problem for SWT
	* applications because they don't cause X errors.
	* However, sometimes X errors are generated by AWT
	* that make SWT exit. The fix is to hide all X
	* errors when AWT is running.
	*/
	if (OS.isX11()) {
	GDK.gdk_x11_display_error_trap_push(GDK.gdk_display_get_default());
	}
	try {
	/* Initialize the default focus traversal policy */
	Class<?> clazz = Class.forName("javax.swing.UIManager");
	Method method = clazz.getMethod("getDefaults");
	if (method != null) method.invoke(clazz);
	} catch (Throwable e) {}
	}

	/**
	* Returns a <code>java.awt.Frame</code> which is the embedded frame
	* associated with the specified composite.
	*
	* @param parent the parent <code>Composite</code> of the <code>java.awt.Frame</code>
	* @return a <code>java.awt.Frame</code> the embedded frame or <code>null</code>.
	*
	* @exception IllegalArgumentException <ul>
	* <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
	* </ul>
	*
	* @since 3.2
	*/
	public static Frame getFrame (Composite parent) {
	if (parent == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
	if ((parent.getStyle () & SWT.EMBEDDED) == 0) return null;
	return (Frame)parent.getData(EMBEDDED_FRAME_KEY);
	}

	/**
	* Creates a new <code>java.awt.Frame</code>. This frame is the root for
	* the AWT components that will be embedded within the composite. In order
	* for the embedding to succeed, the composite must have been created
	* with the SWT.EMBEDDED style.
	* <p>
	* IMPORTANT: As of JDK1.5, the embedded frame does not receive mouse events.
	* When a lightweight component is added as a child of the embedded frame,
	* the cursor does not change. In order to work around both these problems, it is
	* strongly recommended that a heavyweight component such as <code>java.awt.Panel</code>
	* be added to the frame as the root of all components.
	* </p>
	*
	* @param parent the parent <code>Composite</code> of the new <code>java.awt.Frame</code>
	* @return a <code>java.awt.Frame</code> to be the parent of the embedded AWT components
	*
	* @exception IllegalArgumentException <ul>
	* <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
	* <li>ERROR_INVALID_ARGUMENT - if the parent Composite does not have the SWT.EMBEDDED style</li>
	* </ul>
	*
	* @since 3.0
	*/
	public static Frame new_Frame (final Composite parent) {
	if (OS.IsWin32) SWT.error (SWT.ERROR_NOT_IMPLEMENTED);
	if (parent == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
	if ((parent.getStyle () & SWT.EMBEDDED) == 0) {
	SWT.error (SWT.ERROR_INVALID_ARGUMENT);
	}
	long handle = parent.embeddedHandle;
	/*
	* Some JREs have implemented the embedded frame constructor to take an integer
	* and other JREs take a long. To handle this binary incompatibility, use
	* reflection to create the embedded frame.
	*/
	String className = embeddedFrameClass != null ? embeddedFrameClass : "sun.awt.X11.XEmbeddedFrame";
	try {
	if (embeddedFrameClass != null) {
	Class.forName(className);
	}
	loadLibrary();
	} catch (ClassNotFoundException cne) {
	SWT.error (SWT.ERROR_NOT_IMPLEMENTED, cne);
	} catch (Throwable e) {
	SWT.error (SWT.ERROR_UNSPECIFIED , e, " [Error while starting AWT]");
	}
	initializeSwing ();
	final Frame [] frame = new Frame [1];
	Object object = initFrame(handle, className);
	if (object == null \|\| !(object instanceof Frame)) {
	SWT.error (SWT.ERROR_UNSPECIFIED , new Throwable(), " [Error while starting AWT]");
	}
	frame[0] = (Frame) object;
	parent.setData(EMBEDDED_FRAME_KEY, frame[0]);
	if (Device.DEBUG) {
	setDebug(frame[0], true);
	}
	/* Call registerListeners() to make XEmbed focus traversal work */
	registerListeners(frame[0]);

	final AWTEventListener awtListener = event -> {
	if (event.getID() == WindowEvent.WINDOW_OPENED) {
	final Window window = (Window) event.getSource();
	if (window.getParent() == frame[0]) {
	parent.getDisplay().asyncExec(() -> {
	if (parent.isDisposed()) return;
	Shell shell = parent.getShell();
	long awtHandle = getAWTHandle(window);
	if (awtHandle == 0) return;

	long xWindow;
	if (GTK.GTK4) {
	xWindow = GDK.gdk_x11_surface_get_xid(GTK4.gtk_native_get_surface (GTK.gtk_widget_get_native(shell.handle)));
	} else {
	xWindow = GDK.gdk_x11_window_get_xid (GTK.gtk_widget_get_window (GTK.gtk_widget_get_toplevel (shell.handle)));
	}

	OS.XSetTransientForHint(GDK.gdk_x11_display_get_xdisplay(GDK.gdk_display_get_default()), awtHandle, xWindow);
	});
	}
	}
	};

	frame[0].getToolkit().addAWTEventListener(awtListener, AWTEvent.WINDOW_EVENT_MASK);
	final Listener shellListener = e -> {
	switch (e.type) {
	case SWT.Deiconify:
	EventQueue.invokeLater(() -> frame[0].dispatchEvent (new WindowEvent (frame[0], WindowEvent.WINDOW_DEICONIFIED)));
	break;
	case SWT.Iconify:
	EventQueue.invokeLater(() -> frame[0].dispatchEvent (new WindowEvent (frame[0], WindowEvent.WINDOW_ICONIFIED)));
	break;
	}
	};
	Shell shell = parent.getShell ();
	shell.addListener (SWT.Deiconify, shellListener);
	shell.addListener (SWT.Iconify, shellListener);

	Listener listener = e -> {
	switch (e.type) {
	case SWT.Dispose:
	Shell shell1 = parent.getShell ();
	shell1.removeListener (SWT.Deiconify, shellListener);
	shell1.removeListener (SWT.Iconify, shellListener);
	parent.setVisible(false);
	EventQueue.invokeLater(() -> {
	frame[0].getToolkit().removeAWTEventListener(awtListener);
	frame[0].dispose ();
	});
	break;
	case SWT.Resize:
	final Rectangle clientArea = DPIUtil.autoScaleUp(parent.getClientArea());
	EventQueue.invokeLater(() -> frame[0].setSize (clientArea.width, clientArea.height));
	break;
	}
	};
	parent.addListener (SWT.Dispose, listener);
	parent.addListener (SWT.Resize, listener);

	parent.getDisplay().asyncExec(() -> {
	if (parent.isDisposed()) return;
	final Rectangle clientArea = DPIUtil.autoScaleUp(parent.getClientArea());
	EventQueue.invokeLater(() -> {
	frame[0].setSize (clientArea.width, clientArea.height);
	frame[0].validate ();
	});
	});
	return frame[0];
	}

	/**
	* Creates a new <code>Shell</code>. This Shell is the root for
	* the SWT widgets that will be embedded within the AWT canvas.
	*
	* @param display the display for the new Shell
	* @param parent the parent <code>java.awt.Canvas</code> of the new Shell
	* @return a <code>Shell</code> to be the parent of the embedded SWT widgets
	*
	* @exception IllegalArgumentException <ul>
	* <li>ERROR_NULL_ARGUMENT - if the display is null</li>
	* <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
	* <li>ERROR_INVALID_ARGUMENT - if the parent's peer is not created</li>
	* </ul>
	*
	* @since 3.0
	*/
	public static Shell new_Shell (final Display display, final Canvas parent) {
	if (OS.IsWin32) SWT.error (SWT.ERROR_NOT_IMPLEMENTED);
	if (display == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
	if (parent == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
	long handle = 0;
	try {
	loadLibrary ();
	handle = getAWTHandle (parent);
	} catch (Throwable e) {
	SWT.error (SWT.ERROR_NOT_IMPLEMENTED, e);
	}
	if (handle == 0) SWT.error (SWT.ERROR_INVALID_ARGUMENT, null, " [peer not created]");

	final Shell shell = Shell.gtk_new (display, handle);
	final ComponentListener listener = new ComponentAdapter () {
	@Override
	public void componentResized (ComponentEvent e) {
	display.syncExec (() -> {
	if (shell.isDisposed()) return;
	Dimension dim = parent.getSize ();
	shell.setSize (DPIUtil.autoScaleDown(new Point(dim.width, dim.height)));
	});
	}
	};
	parent.addComponentListener(listener);
	shell.addListener(SWT.Dispose, event -> parent.removeComponentListener(listener));
	shell.setVisible (true);
	return shell;
	}
	}