6797195: Forward-port enhancements for hw/lw mixing from 6u12 to 7

Reviewed-by: art, dcherepanov

jdk/make/sun/awt/Makefile

@@ -47,7 +47,7 @@ OTHER_CFLAGS += -D__MEDIALIB_OLD_NAMES -D__USE_J2D_NAMES
 # sun/awt/resources       handled by java/awt/Makefile
 # sun/java2d/pisces       handled by sun/pisces/Makefile
 #
-AUTO_FILES_JAVA_DIRS = sun/awt sun/java2d
+AUTO_FILES_JAVA_DIRS = sun/awt sun/java2d com/sun/awt
 AUTO_JAVA_PRUNE = resources pisces
 
 ifeq ($(PLATFORM), windows)

jdk/make/tools/sharing/classlist.linux

@@ -1718,6 +1718,7 @@ javax/swing/plaf/basic/BasicToolBarSeparatorUI
 sun/awt/color/CMM
 java/applet/Applet
 java/awt/Panel
+com/sun/awt/AWTUtilities
 javax/swing/KeyboardManager$ComponentKeyStrokePair
 sun/awt/EmbeddedFrame
 sun/awt/im/InputMethodContext

jdk/make/tools/sharing/classlist.solaris

@@ -961,6 +961,7 @@ sun/awt/SunToolkit$3
 javax/swing/SystemEventQueueUtilities$ComponentWorkRequest
 java/applet/Applet
 java/awt/Panel
+com/sun/awt/AWTUtilities
 sun/awt/X11/XExposeEvent
 java/util/jar/Manifest
 java/io/ByteArrayInputStream

jdk/make/tools/sharing/classlist.windows

@@ -1621,6 +1621,7 @@ javax/swing/plaf/basic/BasicToolBarSeparatorUI
 sun/font/FontDesignMetrics$MetricsKey
 java/applet/Applet
 java/awt/Panel
+com/sun/awt/AWTUtilities
 javax/swing/KeyboardManager$ComponentKeyStrokePair
 sun/awt/im/InputMethodContext
 java/awt/im/spi/InputMethodContext

jdk/src/share/classes/com/sun/awt/AWTUtilities.java

@@ -0,0 +1,104 @@
+/*
+ * Copyright 2009 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package com.sun.awt;
+
+import java.awt.*;
+import sun.awt.AWTAccessor;
+
+
+/**
+ * A collection of utility methods for AWT.
+ *
+ * The functionality provided by the static methods of the class includes:
+ * <ul>
+ * <li>Setting a 'mixing-cutout' shape for a component.
+ * </ul>
+ * <p>
+ * <b>WARNING</b>: This class is an implementation detail and only meant
+ * for limited use outside of the core platform. This API may change
+ * drastically between update release, and it may even be
+ * removed or be moved in some other package(s)/class(es).
+ */
+public final class AWTUtilities {
+
+    /**
+     * The AWTUtilities class should not be instantiated
+     */
+    private AWTUtilities() {
+    }
+
+    /**
+     * Sets a 'mixing-cutout' shape for the given component.
+     *
+     * By default a lightweight component is treated as an opaque rectangle for
+     * the purposes of the Heavyweight/Lightweight Components Mixing feature.
+     * This method enables developers to set an arbitrary shape to be cut out
+     * from heavyweight components positioned underneath the lightweight
+     * component in the z-order.
+     * <p>
+     * The {@code shape} argument may have the following values:
+     * <ul>
+     * <li>{@code null} - reverts the default cutout shape (the rectangle equal
+     * to the component's {@code getBounds()})
+     * <li><i>empty-shape</i> - does not cut out anything from heavyweight
+     * components. This makes the given lightweight component effectively
+     * transparent. Note that descendants of the lightweight component still
+     * affect the shapes of heavyweight components.  An example of an
+     * <i>empty-shape</i> is {@code new Rectangle()}.
+     * <li><i>non-empty-shape</i> - the given shape will be cut out from
+     * heavyweight components.
+     * </ul>
+     * <p>
+     * The most common example when the 'mixing-cutout' shape is needed is a
+     * glass pane component. The {@link JRootPane#setGlassPane()} method
+     * automatically sets the <i>empty-shape</i> as the 'mixing-cutout' shape
+     * for the given glass pane component.  If a developer needs some other
+     * 'mixing-cutout' shape for the glass pane (which is rare), this must be
+     * changed manually after installing the glass pane to the root pane.
+     * <p>
+     * Note that the 'mixing-cutout' shape neither affects painting, nor the
+     * mouse events handling for the given component. It is used exclusively
+     * for the purposes of the Heavyweight/Lightweight Components Mixing
+     * feature.
+     *
+     * @param component the component that needs non-default
+     * 'mixing-cutout' shape
+     * @param shape the new 'mixing-cutout' shape
+     * @throws NullPointerException if the component argument is {@code null}
+     */
+    public static void setComponentMixingCutoutShape(Component component,
+            Shape shape)
+    {
+        if (component == null) {
+            throw new NullPointerException(
+                    "The component argument should not be null.");
+        }
+
+        AWTAccessor.getComponentAccessor().setMixingCutoutShape(component,
+                shape);
+    }
+}
+

jdk/src/share/classes/java/awt/Component.java

@@ -65,8 +65,10 @@ import java.applet.Applet;
 
 import sun.security.action.GetPropertyAction;
 import sun.awt.AppContext;
+import sun.awt.AWTAccessor;
 import sun.awt.ConstrainableGraphics;
 import sun.awt.SubRegionShowable;
+import sun.awt.SunToolkit;
 import sun.awt.WindowClosingListener;
 import sun.awt.CausedFocusEvent;
 import sun.awt.EmbeddedFrame;
@@ -758,22 +760,26 @@ public abstract class Component implements ImageObserver, MenuContainer,
      * The shape set with the applyCompoundShape() method. It uncludes the result
      * of the HW/LW mixing related shape computation. It may also include
      * the user-specified shape of the component.
+     * The 'null' value means the component has normal shape (or has no shape at all)
+     * and applyCompoundShape() will skip the following shape identical to normal.
      */
     private transient Region compoundShape = null;
 
+    /*
+     * Represents the shape of this lightweight component to be cut out from
+     * heavyweight components should they intersect. Possible values:
+     *    1. null - consider the shape rectangular
+     *    2. EMPTY_REGION - nothing gets cut out (children still get cut out)
+     *    3. non-empty - this shape gets cut out.
+     */
+    private transient Region mixingCutoutRegion = null;
+
     /*
      * Indicates whether addNotify() is complete
      * (i.e. the peer is created).
      */
     private transient boolean isAddNotifyComplete = false;
 
-    private static final PropertyChangeListener opaquePropertyChangeListener =
-        new PropertyChangeListener() {
-            public void propertyChange(java.beans.PropertyChangeEvent evt) {
-                ((Component)evt.getSource()).mixOnOpaqueChanging();
-            }
-        };
-
     /**
      * Should only be used in subclass getBounds to check that part of bounds
      * is actualy changing
@@ -793,6 +799,39 @@ public abstract class Component implements ImageObserver, MenuContainer,
             }
     }
 
+    static {
+        AWTAccessor.setComponentAccessor(new AWTAccessor.ComponentAccessor() {
+            public void setMixingCutoutShape(Component comp, Shape shape) {
+                Region region = shape == null ?  null :
+                    Region.getInstance(shape, null);
+
+                synchronized (comp.getTreeLock()) {
+                    boolean needShowing = false;
+                    boolean needHiding = false;
+
+                    if (!comp.isNonOpaqueForMixing()) {
+                        needHiding = true;
+                    }
+
+                    comp.mixingCutoutRegion = region;
+
+                    if (!comp.isNonOpaqueForMixing()) {
+                        needShowing = true;
+                    }
+
+                    if (comp.isMixingNeeded()) {
+                        if (needHiding) {
+                            comp.mixOnHiding(comp.isLightweight());
+                        }
+                        if (needShowing) {
+                            comp.mixOnShowing();
+                        }
+                    }
+                }
+            }
+        });
+    }
+
     /**
      * Constructs a new component. Class <code>Component</code> can be
      * extended directly to create a lightweight component that does not
@@ -6643,7 +6682,6 @@ public abstract class Component implements ImageObserver, MenuContainer,
             }
 
             if (!isAddNotifyComplete) {
-                addPropertyChangeListener("opaque", opaquePropertyChangeListener);
                 mixOnShowing();
             }
 
@@ -6735,9 +6773,11 @@ public abstract class Component implements ImageObserver, MenuContainer,
                 p.dispose();
 
                 mixOnHiding(isLightweight);
-                removePropertyChangeListener("opaque", opaquePropertyChangeListener);
 
                 isAddNotifyComplete = false;
+                // Nullifying compoundShape means that the component has normal shape
+                // (or has no shape at all).
+                this.compoundShape = null;
             }
 
             if (hierarchyListener != null ||
@@ -9401,10 +9441,9 @@ public abstract class Component implements ImageObserver, MenuContainer,
      * Null-layout of the container or absence of the container mean
      * the bounds of the component are final and can be trusted.
      */
-    private boolean areBoundsValid() {
+    final boolean areBoundsValid() {
         Container cont = getContainer();
-        return cont == null || cont.isValid()
+        return cont == null || cont.isValid() || cont.getLayout() == null;
-            || cont.getLayout() == null;
     }
 
     /**
@@ -9413,6 +9452,14 @@ public abstract class Component implements ImageObserver, MenuContainer,
      */
     void applyCompoundShape(Region shape) {
         checkTreeLock();
+
+        if (!areBoundsValid()) {
+            if (mixingLog.isLoggable(Level.FINE)) {
+                mixingLog.fine("this = " + this + "; areBoundsValid = " + areBoundsValid());
+            }
+            return;
+        }
+
         if (!isLightweight()) {
             ComponentPeer peer = getPeer();
             if (peer != null) {
@@ -9422,22 +9469,31 @@ public abstract class Component implements ImageObserver, MenuContainer,
                 // with some incorrect Region object with loX being
                 // greater than the hiX for instance.
                 if (shape.isEmpty()) {
-                    shape = Region.getInstanceXYWH(0, 0, 0, 0);
+                    shape = Region.EMPTY_REGION;
                 }
 
+
                 // Note: the shape is not really copied/cloned. We create
                 // the Region object ourselves, so there's no any possibility
                 // to modify the object outside of the mixing code.
+                // Nullifying compoundShape means that the component has normal shape
+                // (or has no shape at all).
+                if (shape.equals(getNormalShape())) {
+                    if (this.compoundShape == null) {
+                        return;
+                    }
+                    this.compoundShape = null;
+                    peer.applyShape(null);
+                } else {
+                    if (shape.equals(getAppliedShape())) {
+                        return;
+                    }
                     this.compoundShape = shape;
-
-                if (areBoundsValid()) {
                     Point compAbsolute = getLocationOnWindow();
-
                     if (mixingLog.isLoggable(Level.FINER)) {
                         mixingLog.fine("this = " + this +
                                 "; compAbsolute=" + compAbsolute + "; shape=" + shape);
                     }
-
                     peer.applyShape(shape.getTranslatedRegion(-compAbsolute.x, -compAbsolute.y));
                 }
             }
@@ -9460,7 +9516,7 @@ public abstract class Component implements ImageObserver, MenuContainer,
         Point curLocation = getLocation();
 
         for (Container parent = getContainer();
-                parent != null;
+                parent != null && !(parent instanceof Window);
                 parent = parent.getContainer())
         {
             curLocation.x += parent.getX();
@@ -9486,7 +9542,28 @@ public abstract class Component implements ImageObserver, MenuContainer,
             );
     }
 
-    private int getSiblingIndexAbove() {
+    /**
+     * Returns the "opaque shape" of the component.
+     *
+     * The opaque shape of a lightweight components is the actual shape that
+     * needs to be cut off of the heavyweight components in order to mix this
+     * lightweight component correctly with them.
+     *
+     * The method is overriden in the java.awt.Container to handle non-opaque
+     * containers containing opaque children.
+     *
+     * See 6637655 for details.
+     */
+    Region getOpaqueShape() {
+        checkTreeLock();
+        if (mixingCutoutRegion != null) {
+            return mixingCutoutRegion;
+        } else {
+            return getNormalShape();
+        }
+    }
+
+    final int getSiblingIndexAbove() {
         checkTreeLock();
         Container parent = getContainer();
         if (parent == null) {
@@ -9498,7 +9575,7 @@ public abstract class Component implements ImageObserver, MenuContainer,
         return nextAbove < 0 ? -1 : nextAbove;
     }
 
-    private int getSiblingIndexBelow() {
+    final int getSiblingIndexBelow() {
         checkTreeLock();
         Container parent = getContainer();
         if (parent == null) {
@@ -9510,6 +9587,11 @@ public abstract class Component implements ImageObserver, MenuContainer,
         return nextBelow >= parent.getComponentCount() ? -1 : nextBelow;
     }
 
+    final boolean isNonOpaqueForMixing() {
+        return mixingCutoutRegion != null &&
+            mixingCutoutRegion.isEmpty();
+    }
+
     private Region calculateCurrentShape() {
         checkTreeLock();
         Region s = getNormalShape();
@@ -9532,8 +9614,8 @@ public abstract class Component implements ImageObserver, MenuContainer,
                      * implementation of the Container class.
                      */
                     Component c = cont.getComponent(index);
-                    if (c.isLightweight() && c.isShowing() && c.isOpaque()) {
+                    if (c.isLightweight() && c.isShowing()) {
-                        s = s.getDifference(c.getNormalShape());
+                        s = s.getDifference(c.getOpaqueShape());
                     }
                 }
 
@@ -9558,6 +9640,9 @@ public abstract class Component implements ImageObserver, MenuContainer,
     void applyCurrentShape() {
         checkTreeLock();
         if (!areBoundsValid()) {
+            if (mixingLog.isLoggable(Level.FINE)) {
+                mixingLog.fine("this = " + this + "; areBoundsValid = " + areBoundsValid());
+            }
             return; // Because applyCompoundShape() ignores such components anyway
         }
         if (mixingLog.isLoggable(Level.FINE)) {
@@ -9576,16 +9661,54 @@ public abstract class Component implements ImageObserver, MenuContainer,
         applyCompoundShape(getAppliedShape().getDifference(s));
     }
 
+    private final void applyCurrentShapeBelowMe() {
+        checkTreeLock();
+        Container parent = getContainer();
+        if (parent != null && parent.isShowing()) {
+            // First, reapply shapes of my siblings
+            parent.recursiveApplyCurrentShape(getSiblingIndexBelow());
+
+            // Second, if my container is non-opaque, reapply shapes of siblings of my container
+            Container parent2 = parent.getContainer();
+            while (!parent.isOpaque() && parent2 != null) {
+                parent2.recursiveApplyCurrentShape(parent.getSiblingIndexBelow());
+
+                parent = parent2;
+                parent2 = parent.getContainer();
+            }
+        }
+    }
+
+    final void subtractAndApplyShapeBelowMe() {
+        checkTreeLock();
+        Container parent = getContainer();
+        if (parent != null && isShowing()) {
+            Region opaqueShape = getOpaqueShape();
+
+            // First, cut my siblings
+            parent.recursiveSubtractAndApplyShape(opaqueShape, getSiblingIndexBelow());
+
+            // Second, if my container is non-opaque, cut siblings of my container
+            Container parent2 = parent.getContainer();
+            while (!parent.isOpaque() && parent2 != null) {
+                parent2.recursiveSubtractAndApplyShape(opaqueShape, parent.getSiblingIndexBelow());
+
+                parent = parent2;
+                parent2 = parent.getContainer();
+            }
+        }
+    }
+
     void mixOnShowing() {
         synchronized (getTreeLock()) {
             if (mixingLog.isLoggable(Level.FINE)) {
                 mixingLog.fine("this = " + this);
             }
-            if (isLightweight()) {
+            if (!isMixingNeeded()) {
-                Container parent = getContainer();
+                return;
-                if (parent != null && isShowing() && isOpaque()) {
-                    parent.recursiveSubtractAndApplyShape(getNormalShape(), getSiblingIndexBelow());
             }
+            if (isLightweight()) {
+                subtractAndApplyShapeBelowMe();
             } else {
                 applyCurrentShape();
             }
@@ -9599,12 +9722,12 @@ public abstract class Component implements ImageObserver, MenuContainer,
             if (mixingLog.isLoggable(Level.FINE)) {
                 mixingLog.fine("this = " + this + "; isLightweight = " + isLightweight);
             }
-            if (isLightweight) {
+            if (!isMixingNeeded()) {
-                Container parent = getContainer();
+                return;
-                if (parent != null) {
+            }
-                    parent.recursiveApplyCurrentShape(getSiblingIndexBelow());
+            if (isLightweight) {
+                applyCurrentShapeBelowMe();
             }
-            } //XXX: else applyNormalShape() ???
         }
     }
 
@@ -9613,11 +9736,11 @@ public abstract class Component implements ImageObserver, MenuContainer,
             if (mixingLog.isLoggable(Level.FINE)) {
                 mixingLog.fine("this = " + this);
             }
-            if (isLightweight()) {
+            if (!isMixingNeeded()) {
-                Container parent = getContainer();
+                return;
-                if (parent != null) {
-                    parent.recursiveApplyCurrentShape(parent.getComponentZOrder(this));
             }
+            if (isLightweight()) {
+                applyCurrentShapeBelowMe();
             } else {
                 applyCurrentShape();
             }
@@ -9633,11 +9756,13 @@ public abstract class Component implements ImageObserver, MenuContainer,
                 mixingLog.fine("this = " + this +
                     "; oldZorder=" + oldZorder + "; newZorder=" + newZorder + "; parent=" + parent);
             }
-
+            if (!isMixingNeeded()) {
+                return;
+            }
             if (isLightweight()) {
                 if (becameHigher) {
-                    if (parent != null && isShowing() && isOpaque()) {
+                    if (parent != null && isShowing()) {
-                        parent.recursiveSubtractAndApplyShape(getNormalShape(), getSiblingIndexBelow(), oldZorder);
+                        parent.recursiveSubtractAndApplyShape(getOpaqueShape(), getSiblingIndexBelow(), oldZorder);
                     }
                 } else {
                     if (parent != null) {
@@ -9653,8 +9778,8 @@ public abstract class Component implements ImageObserver, MenuContainer,
 
                         for (int index = oldZorder; index < newZorder; index++) {
                             Component c = parent.getComponent(index);
-                            if (c.isLightweight() && c.isShowing() && c.isOpaque()) {
+                            if (c.isLightweight() && c.isShowing()) {
-                                shape = shape.getDifference(c.getNormalShape());
+                                shape = shape.getDifference(c.getOpaqueShape());
                             }
                         }
                         applyCompoundShape(shape);
@@ -9664,21 +9789,42 @@ public abstract class Component implements ImageObserver, MenuContainer,
         }
     }
 
-    void mixOnOpaqueChanging() {
-        if (mixingLog.isLoggable(Level.FINE)) {
-            mixingLog.fine("this = " + this);
-        }
-        if (isOpaque()) {
-            mixOnShowing();
-        } else {
-            mixOnHiding(isLightweight());
-        }
-    }
-
     void mixOnValidating() {
         // This method gets overriden in the Container. Obviously, a plain
         // non-container components don't need to handle validation.
     }
 
+    final boolean isMixingNeeded() {
+        if (SunToolkit.getSunAwtDisableMixing()) {
+            if (mixingLog.isLoggable(Level.FINEST)) {
+                mixingLog.finest("this = " + this + "; Mixing disabled via sun.awt.disableMixing");
+            }
+            return false;
+        }
+        if (!areBoundsValid()) {
+            if (mixingLog.isLoggable(Level.FINE)) {
+                mixingLog.fine("this = " + this + "; areBoundsValid = " + areBoundsValid());
+            }
+            return false;
+        }
+        Window window = getContainingWindow();
+        if (window != null) {
+            if (!window.hasHeavyweightDescendants() || !window.hasLightweightDescendants()) {
+                if (mixingLog.isLoggable(Level.FINE)) {
+                    mixingLog.fine("containing window = " + window +
+                            "; has h/w descendants = " + window.hasHeavyweightDescendants() +
+                            "; has l/w descendants = " + window.hasLightweightDescendants());
+                }
+                return false;
+            }
+        } else {
+            if (mixingLog.isLoggable(Level.FINE)) {
+                mixingLog.finest("this = " + this + "; containing window is null");
+            }
+            return false;
+        }
+        return true;
+    }
+
     // ****************** END OF MIXING CODE ********************************
 }

jdk/src/share/classes/java/awt/Container.java

@@ -569,7 +569,7 @@ public class Container extends Component {
      * @return true if there is at least one heavyweight children in a container, false otherwise
      * @since 1.5
      */
-    private boolean hasHeavyweightDescendants() {
+    final boolean hasHeavyweightDescendants() {
         checkTreeLock();
         return numOfHWComponents > 0;
     }
@@ -580,7 +580,7 @@ public class Container extends Component {
      * @return true if there is at least one lightweight children in a container, false otherwise
      * @since 1.7
      */
-    private boolean hasLightweightDescendants() {
+    final boolean hasLightweightDescendants() {
         checkTreeLock();
         return numOfLWComponents > 0;
     }
@@ -3861,6 +3861,28 @@ public class Container extends Component {
         return -1;
     }
 
+    /*
+     * This method is overriden to handle opaque children in non-opaque
+     * containers.
+     */
+    @Override
+    final Region getOpaqueShape() {
+        checkTreeLock();
+        if (isLightweight() && isNonOpaqueForMixing()
+                && hasLightweightDescendants())
+        {
+            Region s = Region.EMPTY_REGION;
+            for (int index = 0; index < getComponentCount(); index++) {
+                Component c = getComponent(index);
+                if (c.isLightweight() && c.isShowing()) {
+                    s = s.getUnion(c.getOpaqueShape());
+                }
+            }
+            return s.getIntersection(getNormalShape());
+        }
+        return super.getOpaqueShape();
+    }
+
     final void recursiveSubtractAndApplyShape(Region shape) {
         recursiveSubtractAndApplyShape(shape, getTopmostComponentIndex(), getBottommostComponentIndex());
     }
@@ -3878,6 +3900,15 @@ public class Container extends Component {
         if (fromZorder == -1) {
             return;
         }
+        if (shape.isEmpty()) {
+            return;
+        }
+        // An invalid container with not-null layout should be ignored
+        // by the mixing code, the container will be validated later
+        // and the mixing code will be executed later.
+        if (getLayout() != null && !isValid()) {
+            return;
+        }
         for (int index = fromZorder; index <= toZorder; index++) {
             Component comp = getComponent(index);
             if (!comp.isLightweight()) {
@@ -3906,10 +3937,19 @@ public class Container extends Component {
         if (fromZorder == -1) {
             return;
         }
+        // An invalid container with not-null layout should be ignored
+        // by the mixing code, the container will be validated later
+        // and the mixing code will be executed later.
+        if (getLayout() != null && !isValid()) {
+            return;
+        }
         for (int index = fromZorder; index <= toZorder; index++) {
             Component comp = getComponent(index);
             if (!comp.isLightweight()) {
                 comp.applyCurrentShape();
+                if (comp instanceof Container && ((Container)comp).getLayout() == null) {
+                    ((Container)comp).recursiveApplyCurrentShape();
+                }
             } else if (comp instanceof Container &&
                     ((Container)comp).hasHeavyweightDescendants()) {
                 ((Container)comp).recursiveApplyCurrentShape();
@@ -4000,6 +4040,10 @@ public class Container extends Component {
                 mixingLog.fine("this = " + this);
             }
 
+            if (!isMixingNeeded()) {
+                return;
+            }
+
             boolean isLightweight = isLightweight();
 
             if (isLightweight && isRecursivelyVisibleUpToHeavyweightContainer()) {
@@ -4034,6 +4078,9 @@ public class Container extends Component {
             if (mixingLog.isLoggable(Level.FINE)) {
                 mixingLog.fine("this = " + this);
             }
+
+            boolean isMixingNeeded = isMixingNeeded();
+
             if (isLightweight() && hasHeavyweightDescendants()) {
                 final Point origin = new Point(getX(), getY());
                 for (Container cont = getContainer();
@@ -4044,7 +4091,18 @@ public class Container extends Component {
                 }
 
                 recursiveRelocateHeavyweightChildren(origin);
+
+                if (!isMixingNeeded) {
+                    return;
                 }
+
+                recursiveApplyCurrentShape();
+            }
+
+            if (!isMixingNeeded) {
+                return;
+            }
+
             super.mixOnReshaping();
         }
     }
@@ -4057,6 +4115,10 @@ public class Container extends Component {
                     "; oldZ=" + oldZorder + "; newZ=" + newZorder);
             }
 
+            if (!isMixingNeeded()) {
+                return;
+            }
+
             boolean becameHigher = newZorder < oldZorder;
 
             if (becameHigher && isLightweight() && hasHeavyweightDescendants()) {
@@ -4073,10 +4135,18 @@ public class Container extends Component {
                 mixingLog.fine("this = " + this);
             }
 
+            if (!isMixingNeeded()) {
+                return;
+            }
+
             if (hasHeavyweightDescendants()) {
                 recursiveApplyCurrentShape();
             }
 
+            if (isLightweight() && isNonOpaqueForMixing()) {
+                subtractAndApplyShapeBelowMe();
+            }
+
             super.mixOnValidating();
         }
     }

jdk/src/share/classes/javax/swing/JRootPane.java

@@ -34,6 +34,7 @@ import javax.swing.plaf.RootPaneUI;
 import java.util.Vector;
 import java.io.Serializable;
 import javax.swing.border.*;
+import sun.awt.AWTAccessor;
 import sun.security.action.GetBooleanAction;
 
 
@@ -688,6 +689,9 @@ public class JRootPane extends JComponent implements Accessible {
             throw new NullPointerException("glassPane cannot be set to null.");
         }
 
+        AWTAccessor.getComponentAccessor().setMixingCutoutShape(glass,
+                new Rectangle());
+
         boolean visible = false;
         if (glassPane != null && glassPane.getParent() == this) {
             this.remove(glassPane);

jdk/src/share/classes/sun/awt/AWTAccessor.java

@@ -0,0 +1,77 @@
+/*
+ * Copyright 2009 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package sun.awt;
+
+import java.awt.*;
+import sun.misc.Unsafe;
+
+/** The AWTAccessor utility class.
+ * The main purpose of this class is to enable accessing
+ * private and package-private fields of classes from
+ * different classes/packages. See sun.misc.SharedSecretes
+ * for another example.
+ */
+public final class AWTAccessor {
+    private static final Unsafe unsafe = Unsafe.getUnsafe();
+
+    /** We don't need any objects of this class.
+     * It's rather a collection of static methods
+     * and interfaces.
+     */
+    private AWTAccessor() {
+    }
+
+    /** An accessor for the java.awt.Component class.
+     */
+    public interface ComponentAccessor {
+        // See 6797587
+        // Also see: 6776743, 6768307, and 6768332.
+        /**
+         * Sets the shape of a lw component to cut out from hw components.
+         */
+        void setMixingCutoutShape(Component comp, Shape shape);
+    }
+
+    /* The java.awt.Component class accessor object.
+     */
+    private static ComponentAccessor componentAccessor;
+
+    /** Set an accessor object for the java.awt.Component class.
+     */
+    public static void setComponentAccessor(ComponentAccessor ca) {
+        componentAccessor = ca;
+    }
+
+    /** Retrieve the accessor object for the java.awt.Window class.
+     */
+    public static ComponentAccessor getComponentAccessor() {
+        if (componentAccessor == null) {
+            unsafe.ensureClassInitialized(Component.class);
+        }
+
+        return componentAccessor;
+    }
+}

jdk/src/share/classes/sun/awt/SunToolkit.java

@@ -1972,6 +1972,21 @@ public abstract class SunToolkit extends Toolkit
         AWTAutoShutdown.getInstance().dumpPeers(aLog);
     }
 
+    private static Boolean sunAwtDisableMixing = null;
+
+    /**
+     * Returns the value of "sun.awt.disableMixing" property. Default
+     * value is {@code false}.
+     */
+    public synchronized static boolean getSunAwtDisableMixing() {
+        if (sunAwtDisableMixing == null) {
+            sunAwtDisableMixing = Boolean.valueOf(
+                    AccessController.doPrivileged(
+                        new GetBooleanAction("sun.awt.disableMixing")));
+        }
+        return sunAwtDisableMixing.booleanValue();
+    }
+
     /**
      * Returns true if the native GTK libraries are available.  The
      * default implementation returns false, but UNIXToolkit overrides this

jdk/src/share/classes/sun/java2d/pipe/Region.java

@@ -28,6 +28,7 @@ package sun.java2d.pipe;
 import java.awt.Rectangle;
 import java.awt.Shape;
 import java.awt.geom.AffineTransform;
+import java.awt.geom.RectangularShape;
 
 /**
  * This class encapsulates a definition of a two dimensional region which
@@ -63,8 +64,25 @@ public class Region {
     static final int INIT_SIZE = 50;
     static final int GROW_SIZE = 50;
 
-    static final Region EMPTY_REGION = new Region(0, 0, 0, 0);
+    /**
-    static final Region WHOLE_REGION = new Region(Integer.MIN_VALUE,
+     * Immutable Region.
+     */
+    private static final class ImmutableRegion extends Region {
+        protected ImmutableRegion(int lox, int loy, int hix, int hiy) {
+            super(lox, loy, hix, hiy);
+        }
+
+        // Override all the methods that mutate the object
+        public void appendSpans(sun.java2d.pipe.SpanIterator si) {}
+        public void setOutputArea(java.awt.Rectangle r) {}
+        public void setOutputAreaXYWH(int x, int y, int w, int h) {}
+        public void setOutputArea(int[] box) {}
+        public void setOutputAreaXYXY(int lox, int loy, int hix, int hiy) {}
+    }
+
+    public static final Region EMPTY_REGION = new ImmutableRegion(0, 0, 0, 0);
+    public static final Region WHOLE_REGION = new ImmutableRegion(
+            Integer.MIN_VALUE,
             Integer.MIN_VALUE,
             Integer.MAX_VALUE,
             Integer.MAX_VALUE);
@@ -113,7 +131,7 @@ public class Region {
         return newv;
     }
 
-    private Region(int lox, int loy, int hix, int hiy) {
+    protected Region(int lox, int loy, int hix, int hiy) {
         this.lox = lox;
         this.loy = loy;
         this.hix = hix;
@@ -194,6 +212,13 @@ public class Region {
     public static Region getInstance(Region devBounds, boolean normalize,
                                      Shape s, AffineTransform at)
     {
+        // Optimize for empty shapes to avoid involving the SpanIterator
+        if (s instanceof RectangularShape &&
+                ((RectangularShape)s).isEmpty())
+        {
+            return EMPTY_REGION;
+        }
+
         int box[] = new int[4];
         ShapeSpanIterator sr = new ShapeSpanIterator(normalize);
         try {
@@ -1206,7 +1231,7 @@ public class Region {
             return false;
         }
         if (r.lox != this.lox || r.loy != this.loy ||
-            r.hiy != this.hiy || r.hiy != this.hiy)
+            r.hix != this.hix || r.hiy != this.hiy)
         {
             return false;
         }

jdk/src/solaris/classes/sun/awt/X11/XComponentPeer.java

@@ -1534,6 +1534,7 @@ public class XComponentPeer extends XWindow implements ComponentPeer, DropTarget
             }
             XToolkit.awtLock();
             try {
+                if (shape != null) {
                     XlibWrapper.SetRectangularShape(
                             XToolkit.getDisplay(),
                             getWindow(),
@@ -1541,6 +1542,15 @@ public class XComponentPeer extends XWindow implements ComponentPeer, DropTarget
                             shape.getHiX(), shape.getHiY(),
                             (shape.isRectangular() ? null : shape)
                             );
+                } else {
+                    XlibWrapper.SetRectangularShape(
+                            XToolkit.getDisplay(),
+                            getWindow(),
+                            0, 0,
+                            0, 0,
+                            null
+                            );
+                }
             } finally {
                 XToolkit.awtUnlock();
             }

jdk/src/solaris/native/sun/xawt/XlibWrapper.c

@@ -1918,19 +1918,30 @@ Java_sun_awt_X11_XlibWrapper_SetRectangularShape
  jint x1, jint y1, jint x2, jint y2,
  jobject region)
 {
-    XRectangle rects[256];
-    XRectangle *pRect = rects;
-    int numrects;
-
     AWT_CHECK_HAVE_LOCK();
 
-    numrects = RegionToYXBandedRectangles(env, x1, y1, x2, y2, region,
+    // If all the params are zeros, the shape must be simply reset.
+    // Otherwise, the shape may be not rectangular.
+    if (region || x1 || x2 || y1 || y2) {
+        XRectangle rects[256];
+        XRectangle *pRect = rects;
+
+        int numrects = RegionToYXBandedRectangles(env, x1, y1, x2, y2, region,
                 &pRect, 256);
 
+        XShapeCombineRectangles((Display *)jlong_to_ptr(display), (Window)jlong_to_ptr(window),
+                ShapeClip, 0, 0, pRect, numrects, ShapeSet, YXBanded);
         XShapeCombineRectangles((Display *)jlong_to_ptr(display), (Window)jlong_to_ptr(window),
                 ShapeBounding, 0, 0, pRect, numrects, ShapeSet, YXBanded);
 
         if (pRect != rects) {
             free(pRect);
         }
+    } else {
+        // Reset the shape to a rectangular form.
+        XShapeCombineMask((Display *)jlong_to_ptr(display), (Window)jlong_to_ptr(window),
+                ShapeClip, 0, 0, None, ShapeSet);
+        XShapeCombineMask((Display *)jlong_to_ptr(display), (Window)jlong_to_ptr(window),
+                ShapeBounding, 0, 0, None, ShapeSet);
+    }
 }

jdk/src/windows/classes/sun/awt/windows/WComponentPeer.java

@@ -957,8 +957,12 @@ public abstract class WComponentPeer extends WObjectPeer
                     + "; SHAPE: " + shape);
         }
 
+        if (shape != null) {
             setRectangularShape(shape.getLoX(), shape.getLoY(), shape.getHiX(), shape.getHiY(),
                     (shape.isRectangular() ? null : shape));
+        } else {
+            setRectangularShape(0, 0, 0, 0, null);
+        }
     }
 
 }

jdk/src/windows/native/sun/windows/awt_Component.cpp

@@ -6114,6 +6114,11 @@ void AwtComponent::_SetRectangularShape(void *param)
     c = (AwtComponent *)pData;
     if (::IsWindow(c->GetHWnd()))
     {
+        HRGN hRgn = NULL;
+
+        if (region || x1 || x2 || y1 || y2) {
+            // If all the params are zeros, the shape must be simply reset.
+            // Otherwise, convert it into a region.
             RGNDATA *pRgnData = NULL;
             RGNDATAHEADER *pRgnHdr;
 
@@ -6134,10 +6139,11 @@ void AwtComponent::_SetRectangularShape(void *param)
             RECT_T * pRect = (RECT_T *) (((BYTE *) pRgnData) + sizeof(RGNDATAHEADER));
             pRgnHdr->nCount = RegionToYXBandedRectangles(env, x1, y1, x2, y2, region, &pRect, worstBufferSize);
 
-        HRGN hRgn = ::ExtCreateRegion(NULL,
+            hRgn = ::ExtCreateRegion(NULL,
                     sizeof(RGNDATAHEADER) + sizeof(RECT_T) * pRgnHdr->nCount, pRgnData);
 
             free(pRgnData);
+        }
 
         ::SetWindowRgn(c->GetHWnd(), hRgn, TRUE);
     }

jdk/test/java/awt/Mixing/HWDisappear.java

@@ -0,0 +1,426 @@
+/*
+ * Copyright 2009 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+  @test %W% %E%
+  @bug 6769511
+  @summary AWT components are invisible for a while after frame is moved & menu items are visible
+  @author anthony.petrov@...: area=awt.mixing
+  @library ../regtesthelpers
+  @build Util
+  @run main HWDisappear
+*/
+
+/**
+ * HWDisappear.java
+ *
+ * summary:  AWT components are invisible for a while after frame is moved & menu items are visible
+ */
+
+import java.awt.*;
+import java.awt.event.*;
+import javax.swing.*;
+import test.java.awt.regtesthelpers.Util;
+
+public class HWDisappear
+{
+
+    static volatile boolean clickPassed = false;
+
+    private static void init()
+    {
+        //*** Create instructions for the user here ***
+
+        String[] instructions =
+        {
+            "This is an AUTOMATIC test, simply wait until it is done.",
+            "The result (passed or failed) will be shown in the",
+            "message window below."
+        };
+        Sysout.createDialog( );
+        Sysout.printInstructions( instructions );
+
+
+        // Create the frame and the button
+        JFrame f = new JFrame();
+        f.setBounds(100, 100, 400, 300);
+
+        JMenuBar menubar = new JMenuBar();
+        f.setJMenuBar(menubar);
+
+        // Create lightweight-enabled menu
+        JMenu lmenu = new JMenu("Lite Menu");
+        lmenu.add("Salad");
+        lmenu.add("Fruit Plate");
+        lmenu.add("Water");
+        menubar.add(lmenu);
+
+        Button b = new Button("OK");
+
+        f.setLayout(null);
+        f.add(b);
+        b.setBounds(50, 50, 200, 50);
+
+        b.addActionListener(new java.awt.event.ActionListener() {
+            public void actionPerformed(java.awt.event.ActionEvent e) {
+                clickPassed = true;
+            }
+        });
+
+        f.setVisible(true);
+
+        Robot robot = Util.createRobot();
+        robot.setAutoDelay(20);
+
+        Util.waitForIdle(robot);
+
+        // Move quite far to ensure the button is hidden completely
+        f.setLocation(500, 200);
+
+        Util.waitForIdle(robot);
+
+        // Activate the menu
+        Point lLoc = lmenu.getLocationOnScreen();
+        robot.mouseMove(lLoc.x + 5, lLoc.y + 5);
+
+        robot.mousePress(InputEvent.BUTTON1_MASK);
+        robot.mouseRelease(InputEvent.BUTTON1_MASK);
+        Util.waitForIdle(robot);
+
+        // Click on the button.
+        Point bLoc = b.getLocationOnScreen();
+        robot.mouseMove(bLoc.x + b.getWidth() / 2, bLoc.y + 5);
+
+        robot.mousePress(InputEvent.BUTTON1_MASK);
+        robot.mouseRelease(InputEvent.BUTTON1_MASK);
+        Util.waitForIdle(robot);
+
+        if (clickPassed) {
+            pass();
+        } else {
+            fail("The button cannot be clicked.");
+        }
+    }//End  init()
+
+
+
+    /*****************************************************
+     * Standard Test Machinery Section
+     * DO NOT modify anything in this section -- it's a
+     * standard chunk of code which has all of the
+     * synchronisation necessary for the test harness.
+     * By keeping it the same in all tests, it is easier
+     * to read and understand someone else's test, as
+     * well as insuring that all tests behave correctly
+     * with the test harness.
+     * There is a section following this for test-
+     * classes
+     ******************************************************/
+    private static boolean theTestPassed = false;
+    private static boolean testGeneratedInterrupt = false;
+    private static String failureMessage = "";
+
+    private static Thread mainThread = null;
+
+    private static int sleepTime = 300000;
+
+    // Not sure about what happens if multiple of this test are
+    //  instantiated in the same VM.  Being static (and using
+    //  static vars), it aint gonna work.  Not worrying about
+    //  it for now.
+    public static void main( String args[] ) throws InterruptedException
+    {
+        mainThread = Thread.currentThread();
+        try
+        {
+            init();
+        }
+        catch( TestPassedException e )
+        {
+            //The test passed, so just return from main and harness will
+            // interepret this return as a pass
+            return;
+        }
+        //At this point, neither test pass nor test fail has been
+        // called -- either would have thrown an exception and ended the
+        // test, so we know we have multiple threads.
+
+        //Test involves other threads, so sleep and wait for them to
+        // called pass() or fail()
+        try
+        {
+            Thread.sleep( sleepTime );
+            //Timed out, so fail the test
+            throw new RuntimeException( "Timed out after " + sleepTime/1000 + " seconds" );
+        }
+        catch (InterruptedException e)
+        {
+            //The test harness may have interrupted the test.  If so, rethrow the exception
+            // so that the harness gets it and deals with it.
+            if( ! testGeneratedInterrupt ) throw e;
+
+            //reset flag in case hit this code more than once for some reason (just safety)
+            testGeneratedInterrupt = false;
+
+            if ( theTestPassed == false )
+            {
+                throw new RuntimeException( failureMessage );
+            }
+        }
+
+    }//main
+
+    public static synchronized void setTimeoutTo( int seconds )
+    {
+        sleepTime = seconds * 1000;
+    }
+
+    public static synchronized void pass()
+    {
+        Sysout.println( "The test passed." );
+        Sysout.println( "The test is over, hit  Ctl-C to stop Java VM" );
+        //first check if this is executing in main thread
+        if ( mainThread == Thread.currentThread() )
+        {
+            //Still in the main thread, so set the flag just for kicks,
+            // and throw a test passed exception which will be caught
+            // and end the test.
+            theTestPassed = true;
+            throw new TestPassedException();
+        }
+        theTestPassed = true;
+        testGeneratedInterrupt = true;
+        mainThread.interrupt();
+    }//pass()
+
+    public static synchronized void fail()
+    {
+        //test writer didn't specify why test failed, so give generic
+        fail( "it just plain failed! :-)" );
+    }
+
+    public static synchronized void fail( String whyFailed )
+    {
+        Sysout.println( "The test failed: " + whyFailed );
+        Sysout.println( "The test is over, hit  Ctl-C to stop Java VM" );
+        //check if this called from main thread
+        if ( mainThread == Thread.currentThread() )
+        {
+            //If main thread, fail now 'cause not sleeping
+            throw new RuntimeException( whyFailed );
+        }
+        theTestPassed = false;
+        testGeneratedInterrupt = true;
+        failureMessage = whyFailed;
+        mainThread.interrupt();
+    }//fail()
+
+}// class HWDisappear
+
+//This exception is used to exit from any level of call nesting
+// when it's determined that the test has passed, and immediately
+// end the test.
+class TestPassedException extends RuntimeException
+{
+}
+
+//*********** End Standard Test Machinery Section **********
+
+
+//************ Begin classes defined for the test ****************
+
+// if want to make listeners, here is the recommended place for them, then instantiate
+//  them in init()
+
+/* Example of a class which may be written as part of a test
+class NewClass implements anInterface
+ {
+   static int newVar = 0;
+
+   public void eventDispatched(AWTEvent e)
+    {
+      //Counting events to see if we get enough
+      eventCount++;
+
+      if( eventCount == 20 )
+       {
+         //got enough events, so pass
+
+         HWDisappear.pass();
+       }
+      else if( tries == 20 )
+       {
+         //tried too many times without getting enough events so fail
+
+         HWDisappear.fail();
+       }
+
+    }// eventDispatched()
+
+ }// NewClass class
+
+*/
+
+
+//************** End classes defined for the test *******************
+
+
+
+
+/****************************************************
+ Standard Test Machinery
+ DO NOT modify anything below -- it's a standard
+  chunk of code whose purpose is to make user
+  interaction uniform, and thereby make it simpler
+  to read and understand someone else's test.
+ ****************************************************/
+
+/**
+ This is part of the standard test machinery.
+ It creates a dialog (with the instructions), and is the interface
+  for sending text messages to the user.
+ To print the instructions, send an array of strings to Sysout.createDialog
+  WithInstructions method.  Put one line of instructions per array entry.
+ To display a message for the tester to see, simply call Sysout.println
+  with the string to be displayed.
+ This mimics System.out.println but works within the test harness as well
+  as standalone.
+ */
+
+class Sysout
+{
+    private static TestDialog dialog;
+
+    public static void createDialogWithInstructions( String[] instructions )
+    {
+        dialog = new TestDialog( new Frame(), "Instructions" );
+        dialog.printInstructions( instructions );
+        dialog.setVisible(true);
+        println( "Any messages for the tester will display here." );
+    }
+
+    public static void createDialog( )
+    {
+        dialog = new TestDialog( new Frame(), "Instructions" );
+        String[] defInstr = { "Instructions will appear here. ", "" } ;
+        dialog.printInstructions( defInstr );
+        dialog.setVisible(true);
+        println( "Any messages for the tester will display here." );
+    }
+
+
+    public static void printInstructions( String[] instructions )
+    {
+        dialog.printInstructions( instructions );
+    }
+
+
+    public static void println( String messageIn )
+    {
+        dialog.displayMessage( messageIn );
+        System.out.println(messageIn);
+    }
+
+}// Sysout  class
+
+/**
+  This is part of the standard test machinery.  It provides a place for the
+   test instructions to be displayed, and a place for interactive messages
+   to the user to be displayed.
+  To have the test instructions displayed, see Sysout.
+  To have a message to the user be displayed, see Sysout.
+  Do not call anything in this dialog directly.
+  */
+class TestDialog extends Dialog
+{
+
+    TextArea instructionsText;
+    TextArea messageText;
+    int maxStringLength = 80;
+
+    //DO NOT call this directly, go through Sysout
+    public TestDialog( Frame frame, String name )
+    {
+        super( frame, name );
+        int scrollBoth = TextArea.SCROLLBARS_BOTH;
+        instructionsText = new TextArea( "", 15, maxStringLength, scrollBoth );
+        add( "North", instructionsText );
+
+        messageText = new TextArea( "", 5, maxStringLength, scrollBoth );
+        add("Center", messageText);
+
+        pack();
+
+        setVisible(true);
+    }// TestDialog()
+
+    //DO NOT call this directly, go through Sysout
+    public void printInstructions( String[] instructions )
+    {
+        //Clear out any current instructions
+        instructionsText.setText( "" );
+
+        //Go down array of instruction strings
+
+        String printStr, remainingStr;
+        for( int i=0; i < instructions.length; i++ )
+        {
+            //chop up each into pieces maxSringLength long
+            remainingStr = instructions[ i ];
+            while( remainingStr.length() > 0 )
+            {
+                //if longer than max then chop off first max chars to print
+                if( remainingStr.length() >= maxStringLength )
+                {
+                    //Try to chop on a word boundary
+                    int posOfSpace = remainingStr.
+                        lastIndexOf( ' ', maxStringLength - 1 );
+
+                    if( posOfSpace <= 0 ) posOfSpace = maxStringLength - 1;
+
+                    printStr = remainingStr.substring( 0, posOfSpace + 1 );
+                    remainingStr = remainingStr.substring( posOfSpace + 1 );
+                }
+                //else just print
+                else
+                {
+                    printStr = remainingStr;
+                    remainingStr = "";
+                }
+
+                instructionsText.append( printStr + "\n" );
+
+            }// while
+
+        }// for
+
+    }//printInstructions()
+
+    //DO NOT call this directly, go through Sysout
+    public void displayMessage( String messageIn )
+    {
+        messageText.append( messageIn + "\n" );
+        System.out.println(messageIn);
+    }
+
+}// TestDialog  class

jdk/test/java/awt/Mixing/JButtonInGlassPane.java

@@ -0,0 +1,430 @@
+/*
+ * Copyright 2009 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+  @test %W% %E%
+  @bug 6779670
+  @summary Tests if a LW components in the glass pane affects HW in the content pane
+  @author anthony.petrov@...: area=awt.mixing
+  @library ../regtesthelpers
+  @build Util
+  @run main JButtonInGlassPane
+*/
+
+
+/**
+ * JButtonInGlassPane.java
+ *
+ * summary:  Tests whether a LW menu correctly overlaps a HW button
+ */
+
+import java.awt.*;
+import java.awt.event.*;
+import javax.swing.*;
+import test.java.awt.regtesthelpers.Util;
+
+
+
+public class JButtonInGlassPane
+{
+    static volatile boolean failed = false;
+
+    private static void init()
+    {
+        //*** Create instructions for the user here ***
+
+        String[] instructions =
+        {
+            "This is an AUTOMATIC test, simply wait until it is done.",
+            "The result (passed or failed) will be shown in the",
+            "message window below."
+        };
+        Sysout.createDialog( );
+        Sysout.printInstructions( instructions );
+
+        JFrame frame = new JFrame("Glass Pane children test");
+        frame.setLayout(null);
+
+        final Button button = new Button("AWT Button");
+        button.setBounds(100,100,100,100);
+        frame.add(button);
+
+        button.addActionListener(new ActionListener() {
+            public void actionPerformed(ActionEvent e) {
+                failed = true;
+            }
+        });
+
+        frame.getGlassPane().setVisible(true);
+        Container glassPane = (Container) frame.getGlassPane();
+        glassPane.setLayout(null);
+
+        final JButton jbutton = new JButton("JButton");
+        jbutton.setBounds(50,50,100,100);
+        glassPane.add(jbutton);
+
+        jbutton.setVisible(false);
+
+        frame.setSize(400, 400);
+        frame.setLocationRelativeTo(null);
+        frame.setVisible(true);
+
+        Robot robot = Util.createRobot();
+        robot.setAutoDelay(20);
+
+        Util.waitForIdle(robot);
+
+        jbutton.setVisible(true);
+        Util.waitForIdle(robot);
+
+        // Click the LW button - in the area that intersects with
+        // the HW button.
+        Point lLoc = jbutton.getLocationOnScreen();
+        robot.mouseMove(lLoc.x + jbutton.getWidth() - 5, lLoc.y + jbutton.getHeight() - 5);
+
+        robot.mousePress(InputEvent.BUTTON1_MASK);
+        robot.mouseRelease(InputEvent.BUTTON1_MASK);
+        Util.waitForIdle(robot);
+
+        jbutton.setBounds(50,50,120,120);
+        Util.waitForIdle(robot);
+
+        // Now click on the 'added' area of the LW button that again
+        // intersects with the HW.
+        robot.mouseMove(lLoc.x + jbutton.getWidth() - 5, lLoc.y + jbutton.getHeight() - 5);
+
+        robot.mousePress(InputEvent.BUTTON1_MASK);
+        robot.mouseRelease(InputEvent.BUTTON1_MASK);
+        Util.waitForIdle(robot);
+
+        if (failed) {
+            JButtonInGlassPane.fail("The LW button did not receive the click.");
+        } else {
+            JButtonInGlassPane.pass();
+        }
+    }//End  init()
+
+
+
+    /*****************************************************
+     * Standard Test Machinery Section
+     * DO NOT modify anything in this section -- it's a
+     * standard chunk of code which has all of the
+     * synchronisation necessary for the test harness.
+     * By keeping it the same in all tests, it is easier
+     * to read and understand someone else's test, as
+     * well as insuring that all tests behave correctly
+     * with the test harness.
+     * There is a section following this for test-
+     * classes
+     ******************************************************/
+    private static boolean theTestPassed = false;
+    private static boolean testGeneratedInterrupt = false;
+    private static String failureMessage = "";
+
+    private static Thread mainThread = null;
+
+    private static int sleepTime = 300000;
+
+    // Not sure about what happens if multiple of this test are
+    //  instantiated in the same VM.  Being static (and using
+    //  static vars), it aint gonna work.  Not worrying about
+    //  it for now.
+    public static void main( String args[] ) throws InterruptedException
+    {
+        mainThread = Thread.currentThread();
+        try
+        {
+            init();
+        }
+        catch( TestPassedException e )
+        {
+            //The test passed, so just return from main and harness will
+            // interepret this return as a pass
+            return;
+        }
+        //At this point, neither test pass nor test fail has been
+        // called -- either would have thrown an exception and ended the
+        // test, so we know we have multiple threads.
+
+        //Test involves other threads, so sleep and wait for them to
+        // called pass() or fail()
+        try
+        {
+            Thread.sleep( sleepTime );
+            //Timed out, so fail the test
+            throw new RuntimeException( "Timed out after " + sleepTime/1000 + " seconds" );
+        }
+        catch (InterruptedException e)
+        {
+            //The test harness may have interrupted the test.  If so, rethrow the exception
+            // so that the harness gets it and deals with it.
+            if( ! testGeneratedInterrupt ) throw e;
+
+            //reset flag in case hit this code more than once for some reason (just safety)
+            testGeneratedInterrupt = false;
+
+            if ( theTestPassed == false )
+            {
+                throw new RuntimeException( failureMessage );
+            }
+        }
+
+    }//main
+
+    public static synchronized void setTimeoutTo( int seconds )
+    {
+        sleepTime = seconds * 1000;
+    }
+
+    public static synchronized void pass()
+    {
+        Sysout.println( "The test passed." );
+        Sysout.println( "The test is over, hit  Ctl-C to stop Java VM" );
+        //first check if this is executing in main thread
+        if ( mainThread == Thread.currentThread() )
+        {
+            //Still in the main thread, so set the flag just for kicks,
+            // and throw a test passed exception which will be caught
+            // and end the test.
+            theTestPassed = true;
+            throw new TestPassedException();
+        }
+        theTestPassed = true;
+        testGeneratedInterrupt = true;
+        mainThread.interrupt();
+    }//pass()
+
+    public static synchronized void fail()
+    {
+        //test writer didn't specify why test failed, so give generic
+        fail( "it just plain failed! :-)" );
+    }
+
+    public static synchronized void fail( String whyFailed )
+    {
+        Sysout.println( "The test failed: " + whyFailed );
+        Sysout.println( "The test is over, hit  Ctl-C to stop Java VM" );
+        //check if this called from main thread
+        if ( mainThread == Thread.currentThread() )
+        {
+            //If main thread, fail now 'cause not sleeping
+            throw new RuntimeException( whyFailed );
+        }
+        theTestPassed = false;
+        testGeneratedInterrupt = true;
+        failureMessage = whyFailed;
+        mainThread.interrupt();
+    }//fail()
+
+}// class JButtonInGlassPane
+
+//This exception is used to exit from any level of call nesting
+// when it's determined that the test has passed, and immediately
+// end the test.
+class TestPassedException extends RuntimeException
+{
+}
+
+//*********** End Standard Test Machinery Section **********
+
+
+//************ Begin classes defined for the test ****************
+
+// if want to make listeners, here is the recommended place for them, then instantiate
+//  them in init()
+
+/* Example of a class which may be written as part of a test
+class NewClass implements anInterface
+ {
+   static int newVar = 0;
+
+   public void eventDispatched(AWTEvent e)
+    {
+      //Counting events to see if we get enough
+      eventCount++;
+
+      if( eventCount == 20 )
+       {
+         //got enough events, so pass
+
+         JButtonInGlassPane.pass();
+       }
+      else if( tries == 20 )
+       {
+         //tried too many times without getting enough events so fail
+
+         JButtonInGlassPane.fail();
+       }
+
+    }// eventDispatched()
+
+ }// NewClass class
+
+*/
+
+
+//************** End classes defined for the test *******************
+
+
+
+
+/****************************************************
+ Standard Test Machinery
+ DO NOT modify anything below -- it's a standard
+  chunk of code whose purpose is to make user
+  interaction uniform, and thereby make it simpler
+  to read and understand someone else's test.
+ ****************************************************/
+
+/**
+ This is part of the standard test machinery.
+ It creates a dialog (with the instructions), and is the interface
+  for sending text messages to the user.
+ To print the instructions, send an array of strings to Sysout.createDialog
+  WithInstructions method.  Put one line of instructions per array entry.
+ To display a message for the tester to see, simply call Sysout.println
+  with the string to be displayed.
+ This mimics System.out.println but works within the test harness as well
+  as standalone.
+ */
+
+class Sysout
+{
+    private static TestDialog dialog;
+
+    public static void createDialogWithInstructions( String[] instructions )
+    {
+        dialog = new TestDialog( new Frame(), "Instructions" );
+        dialog.printInstructions( instructions );
+        dialog.setVisible(true);
+        println( "Any messages for the tester will display here." );
+    }
+
+    public static void createDialog( )
+    {
+        dialog = new TestDialog( new Frame(), "Instructions" );
+        String[] defInstr = { "Instructions will appear here. ", "" } ;
+        dialog.printInstructions( defInstr );
+        dialog.setVisible(true);
+        println( "Any messages for the tester will display here." );
+    }
+
+
+    public static void printInstructions( String[] instructions )
+    {
+        dialog.printInstructions( instructions );
+    }
+
+
+    public static void println( String messageIn )
+    {
+        dialog.displayMessage( messageIn );
+        System.out.println(messageIn);
+    }
+
+}// Sysout  class
+
+/**
+  This is part of the standard test machinery.  It provides a place for the
+   test instructions to be displayed, and a place for interactive messages
+   to the user to be displayed.
+  To have the test instructions displayed, see Sysout.
+  To have a message to the user be displayed, see Sysout.
+  Do not call anything in this dialog directly.
+  */
+class TestDialog extends Dialog
+{
+
+    TextArea instructionsText;
+    TextArea messageText;
+    int maxStringLength = 80;
+
+    //DO NOT call this directly, go through Sysout
+    public TestDialog( Frame frame, String name )
+    {
+        super( frame, name );
+        int scrollBoth = TextArea.SCROLLBARS_BOTH;
+        instructionsText = new TextArea( "", 15, maxStringLength, scrollBoth );
+        add( "North", instructionsText );
+
+        messageText = new TextArea( "", 5, maxStringLength, scrollBoth );
+        add("Center", messageText);
+
+        pack();
+
+        setVisible(true);
+    }// TestDialog()
+
+    //DO NOT call this directly, go through Sysout
+    public void printInstructions( String[] instructions )
+    {
+        //Clear out any current instructions
+        instructionsText.setText( "" );
+
+        //Go down array of instruction strings
+
+        String printStr, remainingStr;
+        for( int i=0; i < instructions.length; i++ )
+        {
+            //chop up each into pieces maxSringLength long
+            remainingStr = instructions[ i ];
+            while( remainingStr.length() > 0 )
+            {
+                //if longer than max then chop off first max chars to print
+                if( remainingStr.length() >= maxStringLength )
+                {
+                    //Try to chop on a word boundary
+                    int posOfSpace = remainingStr.
+                        lastIndexOf( ' ', maxStringLength - 1 );
+
+                    if( posOfSpace <= 0 ) posOfSpace = maxStringLength - 1;
+
+                    printStr = remainingStr.substring( 0, posOfSpace + 1 );
+                    remainingStr = remainingStr.substring( posOfSpace + 1 );
+                }
+                //else just print
+                else
+                {
+                    printStr = remainingStr;
+                    remainingStr = "";
+                }
+
+                instructionsText.append( printStr + "\n" );
+
+            }// while
+
+        }// for
+
+    }//printInstructions()
+
+    //DO NOT call this directly, go through Sysout
+    public void displayMessage( String messageIn )
+    {
+        messageText.append( messageIn + "\n" );
+        System.out.println(messageIn);
+    }
+
+}// TestDialog  class
+
+

jdk/test/java/awt/Mixing/LWComboBox.java

@@ -0,0 +1,425 @@
+/*
+ * Copyright 2009 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+  @test %W% %E%
+  @bug 6637655
+  @summary Tests whether a LW combobox correctly overlaps a HW button
+  @author anthony.petrov@...: area=awt.mixing
+  @library ../regtesthelpers
+  @build Util
+  @run main LWComboBox
+*/
+
+
+/**
+ * LWComboBox.java
+ *
+ * summary:  Tests whether a LW combobox correctly overlaps a HW button
+ */
+
+import java.awt.*;
+import java.awt.event.*;
+import javax.swing.*;
+import java.util.Vector;
+import test.java.awt.regtesthelpers.Util;
+
+
+
+public class LWComboBox
+{
+    static volatile boolean failed = false;
+
+    private static void init()
+    {
+        //*** Create instructions for the user here ***
+
+        String[] instructions =
+        {
+            "This is an AUTOMATIC test, simply wait until it is done.",
+            "The result (passed or failed) will be shown in the",
+            "message window below."
+        };
+        Sysout.createDialog( );
+        Sysout.printInstructions( instructions );
+
+        JFrame f = new JFrame("LW menu test");
+
+        JComboBox ch;
+        Button b;
+
+        Vector v = new Vector();
+        for(int i = 1 ; i <=20;i++){
+            v.add("Item # "+i);
+        }
+        ch = new JComboBox(v);
+
+
+        b = new Button("AWT Button");
+        b.addActionListener(new ActionListener() {
+            public void actionPerformed(ActionEvent e) {
+                failed = true;
+            }
+        });
+
+        f.add(ch,BorderLayout.NORTH);
+        f.add(b,BorderLayout.CENTER);
+        f.setSize(300,300);
+        f.setVisible(true);
+
+        Robot robot = Util.createRobot();
+        robot.setAutoDelay(20);
+
+        Util.waitForIdle(robot);
+
+        // Pop up the combobox
+        Point lLoc = ch.getLocationOnScreen();
+        System.err.println("lLoc: " + lLoc);
+        robot.mouseMove(lLoc.x + 5, lLoc.y + 5);
+
+        robot.mousePress(InputEvent.BUTTON1_MASK);
+        robot.mouseRelease(InputEvent.BUTTON1_MASK);
+        Util.waitForIdle(robot);
+
+        // Click on the combo popup.
+        //    It's assumed that the popup item is located
+        //    above the heavyweight button.
+        Point bLoc = b.getLocationOnScreen();
+        System.err.println("bLoc: " + bLoc);
+        robot.mouseMove(bLoc.x + 10, bLoc.y + 10);
+
+        robot.mousePress(InputEvent.BUTTON1_MASK);
+        robot.mouseRelease(InputEvent.BUTTON1_MASK);
+        Util.waitForIdle(robot);
+
+        if (failed) {
+            fail("The LW popup did not received the click.");
+        } else {
+            pass();
+        }
+    }//End  init()
+
+
+
+    /*****************************************************
+     * Standard Test Machinery Section
+     * DO NOT modify anything in this section -- it's a
+     * standard chunk of code which has all of the
+     * synchronisation necessary for the test harness.
+     * By keeping it the same in all tests, it is easier
+     * to read and understand someone else's test, as
+     * well as insuring that all tests behave correctly
+     * with the test harness.
+     * There is a section following this for test-
+     * classes
+     ******************************************************/
+    private static boolean theTestPassed = false;
+    private static boolean testGeneratedInterrupt = false;
+    private static String failureMessage = "";
+
+    private static Thread mainThread = null;
+
+    private static int sleepTime = 300000;
+
+    // Not sure about what happens if multiple of this test are
+    //  instantiated in the same VM.  Being static (and using
+    //  static vars), it aint gonna work.  Not worrying about
+    //  it for now.
+    public static void main( String args[] ) throws InterruptedException
+    {
+        mainThread = Thread.currentThread();
+        try
+        {
+            init();
+        }
+        catch( TestPassedException e )
+        {
+            //The test passed, so just return from main and harness will
+            // interepret this return as a pass
+            return;
+        }
+        //At this point, neither test pass nor test fail has been
+        // called -- either would have thrown an exception and ended the
+        // test, so we know we have multiple threads.
+
+        //Test involves other threads, so sleep and wait for them to
+        // called pass() or fail()
+        try
+        {
+            Thread.sleep( sleepTime );
+            //Timed out, so fail the test
+            throw new RuntimeException( "Timed out after " + sleepTime/1000 + " seconds" );
+        }
+        catch (InterruptedException e)
+        {
+            //The test harness may have interrupted the test.  If so, rethrow the exception
+            // so that the harness gets it and deals with it.
+            if( ! testGeneratedInterrupt ) throw e;
+
+            //reset flag in case hit this code more than once for some reason (just safety)
+            testGeneratedInterrupt = false;
+
+            if ( theTestPassed == false )
+            {
+                throw new RuntimeException( failureMessage );
+            }
+        }
+
+    }//main
+
+    public static synchronized void setTimeoutTo( int seconds )
+    {
+        sleepTime = seconds * 1000;
+    }
+
+    public static synchronized void pass()
+    {
+        Sysout.println( "The test passed." );
+        Sysout.println( "The test is over, hit  Ctl-C to stop Java VM" );
+        //first check if this is executing in main thread
+        if ( mainThread == Thread.currentThread() )
+        {
+            //Still in the main thread, so set the flag just for kicks,
+            // and throw a test passed exception which will be caught
+            // and end the test.
+            theTestPassed = true;
+            throw new TestPassedException();
+        }
+        theTestPassed = true;
+        testGeneratedInterrupt = true;
+        mainThread.interrupt();
+    }//pass()
+
+    public static synchronized void fail()
+    {
+        //test writer didn't specify why test failed, so give generic
+        fail( "it just plain failed! :-)" );
+    }
+
+    public static synchronized void fail( String whyFailed )
+    {
+        Sysout.println( "The test failed: " + whyFailed );
+        Sysout.println( "The test is over, hit  Ctl-C to stop Java VM" );
+        //check if this called from main thread
+        if ( mainThread == Thread.currentThread() )
+        {
+            //If main thread, fail now 'cause not sleeping
+            throw new RuntimeException( whyFailed );
+        }
+        theTestPassed = false;
+        testGeneratedInterrupt = true;
+        failureMessage = whyFailed;
+        mainThread.interrupt();
+    }//fail()
+
+}// class LWComboBox
+
+//This exception is used to exit from any level of call nesting
+// when it's determined that the test has passed, and immediately
+// end the test.
+class TestPassedException extends RuntimeException
+{
+}
+
+//*********** End Standard Test Machinery Section **********
+
+
+//************ Begin classes defined for the test ****************
+
+// if want to make listeners, here is the recommended place for them, then instantiate
+//  them in init()
+
+/* Example of a class which may be written as part of a test
+class NewClass implements anInterface
+ {
+   static int newVar = 0;
+
+   public void eventDispatched(AWTEvent e)
+    {
+      //Counting events to see if we get enough
+      eventCount++;
+
+      if( eventCount == 20 )
+       {
+         //got enough events, so pass
+
+         LWComboBox.pass();
+       }
+      else if( tries == 20 )
+       {
+         //tried too many times without getting enough events so fail
+
+         LWComboBox.fail();
+       }
+
+    }// eventDispatched()
+
+ }// NewClass class
+
+*/
+
+
+//************** End classes defined for the test *******************
+
+
+
+
+/****************************************************
+ Standard Test Machinery
+ DO NOT modify anything below -- it's a standard
+  chunk of code whose purpose is to make user
+  interaction uniform, and thereby make it simpler
+  to read and understand someone else's test.
+ ****************************************************/
+
+/**
+ This is part of the standard test machinery.
+ It creates a dialog (with the instructions), and is the interface
+  for sending text messages to the user.
+ To print the instructions, send an array of strings to Sysout.createDialog
+  WithInstructions method.  Put one line of instructions per array entry.
+ To display a message for the tester to see, simply call Sysout.println
+  with the string to be displayed.
+ This mimics System.out.println but works within the test harness as well
+  as standalone.
+ */
+
+class Sysout
+{
+    private static TestDialog dialog;
+
+    public static void createDialogWithInstructions( String[] instructions )
+    {
+        dialog = new TestDialog( new Frame(), "Instructions" );
+        dialog.printInstructions( instructions );
+        dialog.setVisible(true);
+        println( "Any messages for the tester will display here." );
+    }
+
+    public static void createDialog( )
+    {
+        dialog = new TestDialog( new Frame(), "Instructions" );
+        String[] defInstr = { "Instructions will appear here. ", "" } ;
+        dialog.printInstructions( defInstr );
+        dialog.setVisible(true);
+        println( "Any messages for the tester will display here." );
+    }
+
+
+    public static void printInstructions( String[] instructions )
+    {
+        dialog.printInstructions( instructions );
+    }
+
+
+    public static void println( String messageIn )
+    {
+        dialog.displayMessage( messageIn );
+        System.out.println(messageIn);
+    }
+
+}// Sysout  class
+
+/**
+  This is part of the standard test machinery.  It provides a place for the
+   test instructions to be displayed, and a place for interactive messages
+   to the user to be displayed.
+  To have the test instructions displayed, see Sysout.
+  To have a message to the user be displayed, see Sysout.
+  Do not call anything in this dialog directly.
+  */
+class TestDialog extends Dialog
+{
+
+    TextArea instructionsText;
+    TextArea messageText;
+    int maxStringLength = 80;
+
+    //DO NOT call this directly, go through Sysout
+    public TestDialog( Frame frame, String name )
+    {
+        super( frame, name );
+        int scrollBoth = TextArea.SCROLLBARS_BOTH;
+        instructionsText = new TextArea( "", 15, maxStringLength, scrollBoth );
+        add( "North", instructionsText );
+
+        messageText = new TextArea( "", 5, maxStringLength, scrollBoth );
+        add("Center", messageText);
+
+        pack();
+
+        setVisible(true);
+    }// TestDialog()
+
+    //DO NOT call this directly, go through Sysout
+    public void printInstructions( String[] instructions )
+    {
+        //Clear out any current instructions
+        instructionsText.setText( "" );
+
+        //Go down array of instruction strings
+
+        String printStr, remainingStr;
+        for( int i=0; i < instructions.length; i++ )
+        {
+            //chop up each into pieces maxSringLength long
+            remainingStr = instructions[ i ];
+            while( remainingStr.length() > 0 )
+            {
+                //if longer than max then chop off first max chars to print
+                if( remainingStr.length() >= maxStringLength )
+                {
+                    //Try to chop on a word boundary
+                    int posOfSpace = remainingStr.
+                        lastIndexOf( ' ', maxStringLength - 1 );
+
+                    if( posOfSpace <= 0 ) posOfSpace = maxStringLength - 1;
+
+                    printStr = remainingStr.substring( 0, posOfSpace + 1 );
+                    remainingStr = remainingStr.substring( posOfSpace + 1 );
+                }
+                //else just print
+                else
+                {
+                    printStr = remainingStr;
+                    remainingStr = "";
+                }
+
+                instructionsText.append( printStr + "\n" );
+
+            }// while
+
+        }// for
+
+    }//printInstructions()
+
+    //DO NOT call this directly, go through Sysout
+    public void displayMessage( String messageIn )
+    {
+        messageText.append( messageIn + "\n" );
+        System.out.println(messageIn);
+    }
+
+}// TestDialog  class
+
+

jdk/test/java/awt/Mixing/MixingOnShrinkingHWButton.java

@@ -0,0 +1,429 @@
+/*
+ * Copyright 2009 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+  @test %W% %E%
+  @bug 6777320
+  @summary PIT : Canvas is not fully painted on the internal frame & internal frame goes behind the canvas
+  @author dmitry.cherepanov@...: area=awt.mixing
+  @library ../regtesthelpers
+  @build Util
+  @run main MixingOnShrinkingHWButton
+*/
+
+
+/**
+ * MixingOnDialog.java
+ *
+ * summary:  Tests whether awt.Button and swing.JButton mix correctly
+ *           when awt.Button's width got shrinked
+ */
+
+import java.awt.*;
+import java.awt.event.*;
+import javax.swing.*;
+import test.java.awt.regtesthelpers.Util;
+
+
+
+public class MixingOnShrinkingHWButton
+{
+    static volatile boolean heavyClicked = false;
+    static volatile boolean lightClicked = false;
+
+    private static void init()
+    {
+        //*** Create instructions for the user here ***
+
+        String[] instructions =
+        {
+            "This is an AUTOMATIC test, simply wait until it is done.",
+            "The result (passed or failed) will be shown in the",
+            "message window below."
+        };
+        Sysout.createDialog( );
+        Sysout.printInstructions( instructions );
+
+
+        // Create components
+        final Dialog d = new Dialog((Frame)null, "Button-JButton mix test");
+        final Button heavy = new Button("  Heavyweight Button  ");
+        final JButton light = new JButton("  LW Button  ");
+
+        // Actions for the buttons add appropriate number to the test sequence
+        heavy.addActionListener(new java.awt.event.ActionListener()
+                {
+                    public void actionPerformed(java.awt.event.ActionEvent e) {
+                        heavyClicked = true;
+                    }
+                }
+                );
+
+        light.addActionListener(new java.awt.event.ActionListener()
+                {
+                    public void actionPerformed(java.awt.event.ActionEvent e) {
+                        lightClicked = true;
+                    }
+                }
+                );
+
+        // Shrink the HW button under LW button
+        heavy.setBounds(30, 30, 100, 100);
+        light.setBounds(40, 30, 100, 100);
+
+        // Put the components into the frame
+        d.setLayout(null);
+        d.add(light);
+        d.add(heavy);
+        d.setBounds(50, 50, 400, 400);
+        d.setVisible(true);
+
+
+        Robot robot = Util.createRobot();
+        robot.setAutoDelay(20);
+
+        Util.waitForIdle(robot);
+
+        // Move the mouse pointer to the position where both
+        //    buttons overlap
+        Point heavyLoc = heavy.getLocationOnScreen();
+        robot.mouseMove(heavyLoc.x + 20, heavyLoc.y + 20);
+
+        // Now perform the click at this point
+        robot.mousePress(InputEvent.BUTTON1_MASK);
+        robot.mouseRelease(InputEvent.BUTTON1_MASK);
+        Util.waitForIdle(robot);
+
+        // If the buttons are correctly mixed, the test sequence
+        // is equal to the check sequence.
+        if (lightClicked == true) {
+            MixingOnShrinkingHWButton.pass();
+        } else {
+            MixingOnShrinkingHWButton.fail("The lightweight component left behind the heavyweight one.");
+        }
+    }//End  init()
+
+
+
+    /*****************************************************
+     * Standard Test Machinery Section
+     * DO NOT modify anything in this section -- it's a
+     * standard chunk of code which has all of the
+     * synchronisation necessary for the test harness.
+     * By keeping it the same in all tests, it is easier
+     * to read and understand someone else's test, as
+     * well as insuring that all tests behave correctly
+     * with the test harness.
+     * There is a section following this for test-
+     * classes
+     ******************************************************/
+    private static boolean theTestPassed = false;
+    private static boolean testGeneratedInterrupt = false;
+    private static String failureMessage = "";
+
+    private static Thread mainThread = null;
+
+    private static int sleepTime = 300000;
+
+    // Not sure about what happens if multiple of this test are
+    //  instantiated in the same VM.  Being static (and using
+    //  static vars), it aint gonna work.  Not worrying about
+    //  it for now.
+    public static void main( String args[] ) throws InterruptedException
+    {
+        mainThread = Thread.currentThread();
+        try
+        {
+            init();
+        }
+        catch( TestPassedException e )
+        {
+            //The test passed, so just return from main and harness will
+            // interepret this return as a pass
+            return;
+        }
+        //At this point, neither test pass nor test fail has been
+        // called -- either would have thrown an exception and ended the
+        // test, so we know we have multiple threads.
+
+        //Test involves other threads, so sleep and wait for them to
+        // called pass() or fail()
+        try
+        {
+            Thread.sleep( sleepTime );
+            //Timed out, so fail the test
+            throw new RuntimeException( "Timed out after " + sleepTime/1000 + " seconds" );
+        }
+        catch (InterruptedException e)
+        {
+            //The test harness may have interrupted the test.  If so, rethrow the exception
+            // so that the harness gets it and deals with it.
+            if( ! testGeneratedInterrupt ) throw e;
+
+            //reset flag in case hit this code more than once for some reason (just safety)
+            testGeneratedInterrupt = false;
+
+            if ( theTestPassed == false )
+            {
+                throw new RuntimeException( failureMessage );
+            }
+        }
+
+    }//main
+
+    public static synchronized void setTimeoutTo( int seconds )
+    {
+        sleepTime = seconds * 1000;
+    }
+
+    public static synchronized void pass()
+    {
+        Sysout.println( "The test passed." );
+        Sysout.println( "The test is over, hit  Ctl-C to stop Java VM" );
+        //first check if this is executing in main thread
+        if ( mainThread == Thread.currentThread() )
+        {
+            //Still in the main thread, so set the flag just for kicks,
+            // and throw a test passed exception which will be caught
+            // and end the test.
+            theTestPassed = true;
+            throw new TestPassedException();
+        }
+        theTestPassed = true;
+        testGeneratedInterrupt = true;
+        mainThread.interrupt();
+    }//pass()
+
+    public static synchronized void fail()
+    {
+        //test writer didn't specify why test failed, so give generic
+        fail( "it just plain failed! :-)" );
+    }
+
+    public static synchronized void fail( String whyFailed )
+    {
+        Sysout.println( "The test failed: " + whyFailed );
+        Sysout.println( "The test is over, hit  Ctl-C to stop Java VM" );
+        //check if this called from main thread
+        if ( mainThread == Thread.currentThread() )
+        {
+            //If main thread, fail now 'cause not sleeping
+            throw new RuntimeException( whyFailed );
+        }
+        theTestPassed = false;
+        testGeneratedInterrupt = true;
+        failureMessage = whyFailed;
+        mainThread.interrupt();
+    }//fail()
+
+}// class MixingOnDialog
+
+//This exception is used to exit from any level of call nesting
+// when it's determined that the test has passed, and immediately
+// end the test.
+class TestPassedException extends RuntimeException
+{
+}
+
+//*********** End Standard Test Machinery Section **********
+
+
+//************ Begin classes defined for the test ****************
+
+// if want to make listeners, here is the recommended place for them, then instantiate
+//  them in init()
+
+/* Example of a class which may be written as part of a test
+class NewClass implements anInterface
+ {
+   static int newVar = 0;
+
+   public void eventDispatched(AWTEvent e)
+    {
+      //Counting events to see if we get enough
+      eventCount++;
+
+      if( eventCount == 20 )
+       {
+         //got enough events, so pass
+
+         MixingOnDialog.pass();
+       }
+      else if( tries == 20 )
+       {
+         //tried too many times without getting enough events so fail
+
+         MixingOnDialog.fail();
+       }
+
+    }// eventDispatched()
+
+ }// NewClass class
+
+*/
+
+
+//************** End classes defined for the test *******************
+
+
+
+
+/****************************************************
+ Standard Test Machinery
+ DO NOT modify anything below -- it's a standard
+  chunk of code whose purpose is to make user
+  interaction uniform, and thereby make it simpler
+  to read and understand someone else's test.
+ ****************************************************/
+
+/**
+ This is part of the standard test machinery.
+ It creates a dialog (with the instructions), and is the interface
+  for sending text messages to the user.
+ To print the instructions, send an array of strings to Sysout.createDialog
+  WithInstructions method.  Put one line of instructions per array entry.
+ To display a message for the tester to see, simply call Sysout.println
+  with the string to be displayed.
+ This mimics System.out.println but works within the test harness as well
+  as standalone.
+ */
+
+class Sysout
+{
+    private static TestDialog dialog;
+
+    public static void createDialogWithInstructions( String[] instructions )
+    {
+        dialog = new TestDialog( new Frame(), "Instructions" );
+        dialog.printInstructions( instructions );
+        dialog.setVisible(true);
+        println( "Any messages for the tester will display here." );
+    }
+
+    public static void createDialog( )
+    {
+        dialog = new TestDialog( new Frame(), "Instructions" );
+        String[] defInstr = { "Instructions will appear here. ", "" } ;
+        dialog.printInstructions( defInstr );
+        dialog.setVisible(true);
+        println( "Any messages for the tester will display here." );
+    }
+
+
+    public static void printInstructions( String[] instructions )
+    {
+        dialog.printInstructions( instructions );
+    }
+
+
+    public static void println( String messageIn )
+    {
+        dialog.displayMessage( messageIn );
+        System.out.println(messageIn);
+    }
+
+}// Sysout  class
+
+/**
+  This is part of the standard test machinery.  It provides a place for the
+   test instructions to be displayed, and a place for interactive messages
+   to the user to be displayed.
+  To have the test instructions displayed, see Sysout.
+  To have a message to the user be displayed, see Sysout.
+  Do not call anything in this dialog directly.
+  */
+class TestDialog extends Dialog
+{
+
+    TextArea instructionsText;
+    TextArea messageText;
+    int maxStringLength = 80;
+
+    //DO NOT call this directly, go through Sysout
+    public TestDialog( Frame frame, String name )
+    {
+        super( frame, name );
+        int scrollBoth = TextArea.SCROLLBARS_BOTH;
+        instructionsText = new TextArea( "", 15, maxStringLength, scrollBoth );
+        add( "North", instructionsText );
+
+        messageText = new TextArea( "", 5, maxStringLength, scrollBoth );
+        add("Center", messageText);
+
+        pack();
+
+        setVisible(true);
+    }// TestDialog()
+
+    //DO NOT call this directly, go through Sysout
+    public void printInstructions( String[] instructions )
+    {
+        //Clear out any current instructions
+        instructionsText.setText( "" );
+
+        //Go down array of instruction strings
+
+        String printStr, remainingStr;
+        for( int i=0; i < instructions.length; i++ )
+        {
+            //chop up each into pieces maxSringLength long
+            remainingStr = instructions[ i ];
+            while( remainingStr.length() > 0 )
+            {
+                //if longer than max then chop off first max chars to print
+                if( remainingStr.length() >= maxStringLength )
+                {
+                    //Try to chop on a word boundary
+                    int posOfSpace = remainingStr.
+                        lastIndexOf( ' ', maxStringLength - 1 );
+
+                    if( posOfSpace <= 0 ) posOfSpace = maxStringLength - 1;
+
+                    printStr = remainingStr.substring( 0, posOfSpace + 1 );
+                    remainingStr = remainingStr.substring( posOfSpace + 1 );
+                }
+                //else just print
+                else
+                {
+                    printStr = remainingStr;
+                    remainingStr = "";
+                }
+
+                instructionsText.append( printStr + "\n" );
+
+            }// while
+
+        }// for
+
+    }//printInstructions()
+
+    //DO NOT call this directly, go through Sysout
+    public void displayMessage( String messageIn )
+    {
+        messageText.append( messageIn + "\n" );
+        System.out.println(messageIn);
+    }
+
+}// TestDialog  class
+
+

jdk/test/java/awt/Mixing/NonOpaqueInternalFrame.java

@@ -0,0 +1,434 @@
+/*
+ * Copyright 2009 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+  @test %W% %E%
+  @bug 6768332
+  @summary Tests whether internal frames are always considered opaque
+  @author anthony.petrov@...: area=awt.mixing
+  @library ../regtesthelpers
+  @build Util
+  @run main NonOpaqueInternalFrame
+*/
+
+
+/**
+ * NonOpaqueInternalFrame.java
+ *
+ * summary:  Tests whether internal frames are always considered opaque
+ */
+
+import java.awt.*;
+import java.awt.event.*;
+import java.beans.PropertyVetoException;
+import javax.swing.*;
+import java.util.Vector;
+import test.java.awt.regtesthelpers.Util;
+
+
+
+public class NonOpaqueInternalFrame
+{
+    static volatile boolean failed = false;
+
+    private static final class MyButton extends Button
+            implements ActionListener
+        {
+            public MyButton() {
+                setPreferredSize(new Dimension(100, 100));
+                addActionListener(this);
+            }
+
+            public void actionPerformed(ActionEvent e) {
+                failed = true;
+            }
+        }
+
+    private static void init()
+    {
+        String[] instructions =
+        {
+            "This is an AUTOMATIC test, simply wait until it is done.",
+            "The result (passed or failed) will be shown in the",
+            "message window below."
+        };
+        Sysout.createDialog( );
+        Sysout.printInstructions( instructions );
+
+
+        // Create a frame with two non-opaque JInternalFrame's containing
+        // heavyweight buttons.
+        JFrame jframe = new JFrame("mixing test");
+        JDesktopPane desktop = new JDesktopPane();
+        jframe.setContentPane(desktop);
+        JInternalFrame iframe1 = new JInternalFrame("iframe 1");
+        iframe1.setIconifiable(true);
+        iframe1.add(new MyButton());
+        iframe1.setBounds(10, 10, 100, 100);
+        iframe1.setOpaque(false);
+        iframe1.setVisible(true);
+        desktop.add(iframe1);
+        JInternalFrame iframe2 = new JInternalFrame("iframe 2");
+        iframe2.setIconifiable(true);
+        iframe2.add(new MyButton());
+        iframe2.setBounds(50, 50, 100, 100);
+        iframe2.setOpaque(false);
+        iframe2.setVisible(true);
+        desktop.add(iframe2);
+        jframe.setSize(300, 300);
+        jframe.setVisible(true);
+
+        Robot robot = Util.createRobot();
+        robot.setAutoDelay(20);
+
+        Util.waitForIdle(robot);
+
+        // Try selecting the bottommost frame
+        try {
+            iframe2.setSelected(true);
+        } catch (PropertyVetoException ex) {
+            ex.printStackTrace();
+        }
+
+        // Click the title bar of the internal frame
+        Point lLoc = iframe2.getLocationOnScreen();
+        System.err.println("lLoc: " + lLoc);
+        robot.mouseMove(lLoc.x + 10, lLoc.y + 10);
+        Util.waitForIdle(robot);
+
+        robot.mousePress(InputEvent.BUTTON1_MASK);
+        robot.mouseRelease(InputEvent.BUTTON1_MASK);
+        Util.waitForIdle(robot);
+
+
+        if (failed) {
+            fail("The JInternalFrame is considered non-opaque.");
+        } else {
+            pass();
+        }
+    }//End  init()
+
+
+
+    /*****************************************************
+     * Standard Test Machinery Section
+     * DO NOT modify anything in this section -- it's a
+     * standard chunk of code which has all of the
+     * synchronisation necessary for the test harness.
+     * By keeping it the same in all tests, it is easier
+     * to read and understand someone else's test, as
+     * well as insuring that all tests behave correctly
+     * with the test harness.
+     * There is a section following this for test-
+     * classes
+     ******************************************************/
+    private static boolean theTestPassed = false;
+    private static boolean testGeneratedInterrupt = false;
+    private static String failureMessage = "";
+
+    private static Thread mainThread = null;
+
+    private static int sleepTime = 300000;
+
+    // Not sure about what happens if multiple of this test are
+    //  instantiated in the same VM.  Being static (and using
+    //  static vars), it aint gonna work.  Not worrying about
+    //  it for now.
+    public static void main( String args[] ) throws InterruptedException
+    {
+        mainThread = Thread.currentThread();
+        try
+        {
+            init();
+        }
+        catch( TestPassedException e )
+        {
+            //The test passed, so just return from main and harness will
+            // interepret this return as a pass
+            return;
+        }
+        //At this point, neither test pass nor test fail has been
+        // called -- either would have thrown an exception and ended the
+        // test, so we know we have multiple threads.
+
+        //Test involves other threads, so sleep and wait for them to
+        // called pass() or fail()
+        try
+        {
+            Thread.sleep( sleepTime );
+            //Timed out, so fail the test
+            throw new RuntimeException( "Timed out after " + sleepTime/1000 + " seconds" );
+        }
+        catch (InterruptedException e)
+        {
+            //The test harness may have interrupted the test.  If so, rethrow the exception
+            // so that the harness gets it and deals with it.
+            if( ! testGeneratedInterrupt ) throw e;
+
+            //reset flag in case hit this code more than once for some reason (just safety)
+            testGeneratedInterrupt = false;
+
+            if ( theTestPassed == false )
+            {
+                throw new RuntimeException( failureMessage );
+            }
+        }
+
+    }//main
+
+    public static synchronized void setTimeoutTo( int seconds )
+    {
+        sleepTime = seconds * 1000;
+    }
+
+    public static synchronized void pass()
+    {
+        Sysout.println( "The test passed." );
+        Sysout.println( "The test is over, hit  Ctl-C to stop Java VM" );
+        //first check if this is executing in main thread
+        if ( mainThread == Thread.currentThread() )
+        {
+            //Still in the main thread, so set the flag just for kicks,
+            // and throw a test passed exception which will be caught
+            // and end the test.
+            theTestPassed = true;
+            throw new TestPassedException();
+        }
+        theTestPassed = true;
+        testGeneratedInterrupt = true;
+        mainThread.interrupt();
+    }//pass()
+
+    public static synchronized void fail()
+    {
+        //test writer didn't specify why test failed, so give generic
+        fail( "it just plain failed! :-)" );
+    }
+
+    public static synchronized void fail( String whyFailed )
+    {
+        Sysout.println( "The test failed: " + whyFailed );
+        Sysout.println( "The test is over, hit  Ctl-C to stop Java VM" );
+        //check if this called from main thread
+        if ( mainThread == Thread.currentThread() )
+        {
+            //If main thread, fail now 'cause not sleeping
+            throw new RuntimeException( whyFailed );
+        }
+        theTestPassed = false;
+        testGeneratedInterrupt = true;
+        failureMessage = whyFailed;
+        mainThread.interrupt();
+    }//fail()
+
+}// class NonOpaqueInternalFrame
+
+//This exception is used to exit from any level of call nesting
+// when it's determined that the test has passed, and immediately
+// end the test.
+class TestPassedException extends RuntimeException
+{
+}
+
+//*********** End Standard Test Machinery Section **********
+
+
+//************ Begin classes defined for the test ****************
+
+// if want to make listeners, here is the recommended place for them, then instantiate
+//  them in init()
+
+/* Example of a class which may be written as part of a test
+class NewClass implements anInterface
+ {
+   static int newVar = 0;
+
+   public void eventDispatched(AWTEvent e)
+    {
+      //Counting events to see if we get enough
+      eventCount++;
+
+      if( eventCount == 20 )
+       {
+         //got enough events, so pass
+
+         NonOpaqueInternalFrame.pass();
+       }
+      else if( tries == 20 )
+       {
+         //tried too many times without getting enough events so fail
+
+         NonOpaqueInternalFrame.fail();
+       }
+
+    }// eventDispatched()
+
+ }// NewClass class
+
+*/
+
+
+//************** End classes defined for the test *******************
+
+
+
+
+/****************************************************
+ Standard Test Machinery
+ DO NOT modify anything below -- it's a standard
+  chunk of code whose purpose is to make user
+  interaction uniform, and thereby make it simpler
+  to read and understand someone else's test.
+ ****************************************************/
+
+/**
+ This is part of the standard test machinery.
+ It creates a dialog (with the instructions), and is the interface
+  for sending text messages to the user.
+ To print the instructions, send an array of strings to Sysout.createDialog
+  WithInstructions method.  Put one line of instructions per array entry.
+ To display a message for the tester to see, simply call Sysout.println
+  with the string to be displayed.
+ This mimics System.out.println but works within the test harness as well
+  as standalone.
+ */
+
+class Sysout
+{
+    private static TestDialog dialog;
+
+    public static void createDialogWithInstructions( String[] instructions )
+    {
+        dialog = new TestDialog( new Frame(), "Instructions" );
+        dialog.printInstructions( instructions );
+        dialog.setVisible(true);
+        println( "Any messages for the tester will display here." );
+    }
+
+    public static void createDialog( )
+    {
+        dialog = new TestDialog( new Frame(), "Instructions" );
+        String[] defInstr = { "Instructions will appear here. ", "" } ;
+        dialog.printInstructions( defInstr );
+        dialog.setVisible(true);
+        println( "Any messages for the tester will display here." );
+    }
+
+
+    public static void printInstructions( String[] instructions )
+    {
+        dialog.printInstructions( instructions );
+    }
+
+
+    public static void println( String messageIn )
+    {
+        dialog.displayMessage( messageIn );
+        System.out.println(messageIn);
+    }
+
+}// Sysout  class
+
+/**
+  This is part of the standard test machinery.  It provides a place for the
+   test instructions to be displayed, and a place for interactive messages
+   to the user to be displayed.
+  To have the test instructions displayed, see Sysout.
+  To have a message to the user be displayed, see Sysout.
+  Do not call anything in this dialog directly.
+  */
+class TestDialog extends Dialog
+{
+
+    TextArea instructionsText;
+    TextArea messageText;
+    int maxStringLength = 80;
+
+    //DO NOT call this directly, go through Sysout
+    public TestDialog( Frame frame, String name )
+    {
+        super( frame, name );
+        int scrollBoth = TextArea.SCROLLBARS_BOTH;
+        instructionsText = new TextArea( "", 15, maxStringLength, scrollBoth );
+        add( "North", instructionsText );
+
+        messageText = new TextArea( "", 5, maxStringLength, scrollBoth );
+        add("Center", messageText);
+
+        pack();
+
+        setVisible(true);
+    }// TestDialog()
+
+    //DO NOT call this directly, go through Sysout
+    public void printInstructions( String[] instructions )
+    {
+        //Clear out any current instructions
+        instructionsText.setText( "" );
+
+        //Go down array of instruction strings
+
+        String printStr, remainingStr;
+        for( int i=0; i < instructions.length; i++ )
+        {
+            //chop up each into pieces maxSringLength long
+            remainingStr = instructions[ i ];
+            while( remainingStr.length() > 0 )
+            {
+                //if longer than max then chop off first max chars to print
+                if( remainingStr.length() >= maxStringLength )
+                {
+                    //Try to chop on a word boundary
+                    int posOfSpace = remainingStr.
+                        lastIndexOf( ' ', maxStringLength - 1 );
+
+                    if( posOfSpace <= 0 ) posOfSpace = maxStringLength - 1;
+
+                    printStr = remainingStr.substring( 0, posOfSpace + 1 );
+                    remainingStr = remainingStr.substring( posOfSpace + 1 );
+                }
+                //else just print
+                else
+                {
+                    printStr = remainingStr;
+                    remainingStr = "";
+                }
+
+                instructionsText.append( printStr + "\n" );
+
+            }// while
+
+        }// for
+
+    }//printInstructions()
+
+    //DO NOT call this directly, go through Sysout
+    public void displayMessage( String messageIn )
+    {
+        messageText.append( messageIn + "\n" );
+        System.out.println(messageIn);
+    }
+
+}// TestDialog  class
+
+

jdk/test/java/awt/Mixing/OpaqueTest.java

@@ -42,6 +42,7 @@ import java.awt.*;
 import java.awt.event.*;
 import javax.swing.*;
 import test.java.awt.regtesthelpers.Util;
+import com.sun.awt.AWTUtilities;
 
 
 
@@ -78,6 +79,7 @@ public class OpaqueTest
                 {
                     public void actionPerformed(java.awt.event.ActionEvent e) {
                         p.setComponentZOrder(light, 0);
+                        f.validate();
                         testSeq = testSeq + "0";
                     }
                 }
@@ -87,6 +89,7 @@ public class OpaqueTest
                 {
                     public void actionPerformed(java.awt.event.ActionEvent e) {
                         p.setComponentZOrder(heavy, 0);
+                        f.validate();
                         testSeq = testSeq + "1";
                     }
                 }
@@ -120,10 +123,12 @@ public class OpaqueTest
         // flag value.
         for (int i = 0; i < 9; ++i) {
             if (i == 3) {
-                light.setOpaque(false);
+                AWTUtilities.setComponentMixingCutoutShape(light,
+                        new Rectangle());
             }
             if (i == 6) {
-                light.setOpaque(true);
+                AWTUtilities.setComponentMixingCutoutShape(light,
+                        null);
             }
 
             robot.mousePress(InputEvent.BUTTON1_MASK);

jdk/test/java/awt/Mixing/OverlappingButtons.java

@@ -78,6 +78,7 @@ public class OverlappingButtons
                 {
                     public void actionPerformed(java.awt.event.ActionEvent e) {
                         p.setComponentZOrder(light, 0);
+                        f.validate();
                         testSeq = testSeq + "0";
                     }
                 }
@@ -87,6 +88,7 @@ public class OverlappingButtons
                 {
                     public void actionPerformed(java.awt.event.ActionEvent e) {
                         p.setComponentZOrder(heavy, 0);
+                        f.validate();
                         testSeq = testSeq + "1";
                     }
                 }