gcc6/gcc-4.0.2-BufferStrategy.patch

diff -Nru gcc-4.0.2.orig/libjava/java/awt/Window.java gcc-4.0.2/libjava/java/awt/Window.java
--- gcc-4.0.2.orig/libjava/java/awt/Window.java	2005-10-25 12:54:05.000000000 +0200
+++ gcc-4.0.2/libjava/java/awt/Window.java	2005-10-25 16:19:42.000000000 +0200
@@ -15,8 +15,8 @@
 
 You should have received a copy of the GNU General Public License
 along with GNU Classpath; see the file COPYING.  If not, write to the
-Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-02111-1307 USA.
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
 
 Linking this library statically or dynamically with other modules is
 making a combined work based on this library.  Thus, the terms and
@@ -45,6 +45,7 @@
 import java.awt.event.WindowFocusListener;
 import java.awt.event.WindowListener;
 import java.awt.event.WindowStateListener;
+import java.awt.image.BufferStrategy;
 import java.awt.peer.WindowPeer;
 import java.lang.ref.Reference;
 import java.lang.ref.WeakReference;
@@ -90,7 +91,8 @@
 
   private transient boolean shown;
 
-  private transient Component windowFocusOwner;
+  // This is package-private to avoid an accessor method.
+  transient Component windowFocusOwner;
   
   /*
    * The number used to generate the name returned by getName.
@@ -153,6 +155,9 @@
             }
         }
       });
+    
+    GraphicsEnvironment g = GraphicsEnvironment.getLocalGraphicsEnvironment();
+    graphicsConfiguration = g.getDefaultScreenDevice().getDefaultConfiguration();
   }
 
   Window(GraphicsConfiguration gc)
@@ -617,6 +622,8 @@
 	    || windowStateListener != null
 	    || (eventMask & AWTEvent.WINDOW_EVENT_MASK) != 0))
       processEvent(e);
+    else if (e.id == ComponentEvent.COMPONENT_RESIZED)
+      validate ();
     else
       super.dispatchEventImpl(e);
   }
@@ -739,7 +746,25 @@
     if (activeWindow == this)
       return manager.getFocusOwner ();
     else
-      return windowFocusOwner;
+      return null;
+  }
+
+  /**
+   * Returns the child component of this window that would receive
+   * focus if this window were to become focused.  If the window
+   * already has the top-level focus, then this method returns the
+   * same component as getFocusOwner.  If no child component has
+   * requested focus within the window, then the initial focus owner
+   * is returned.  If this is a non-focusable window, this method
+   * returns null.
+   *
+   * @return the child component of this window that most recently had
+   * the focus, or <code>null</code>
+   * @since 1.4
+   */
+  public Component getMostRecentFocusOwner ()
+  {
+    return windowFocusOwner;
   }
 
   /**
@@ -771,12 +796,16 @@
   /**
    * Tests whether or not this window is visible on the screen.
    *
+   * In contrast to the normal behaviour of Container, which is that
+   * a container is showing if its parent is visible and showing, a Window
+   * is even showing, if its parent (i.e. an invisible Frame) is not showing.
+   *
    * @return <code>true</code> if this window is visible, <code>false</code>
    * otherwise.
    */
   public boolean isShowing()
   {
-    return super.isShowing();
+    return isVisible();
   }
 
   public void setLocationRelativeTo (Component c)
@@ -796,6 +825,157 @@
   }
 
   /**
+   * A BltBufferStrategy for windows.
+   */
+  private class WindowBltBufferStrategy extends BltBufferStrategy
+  {
+    /**
+     * Creates a block transfer strategy for this window.
+     *
+     * @param numBuffers the number of buffers in this strategy
+     * @param accelerated true if the buffer should be accelerated,
+     * false otherwise
+     */
+    WindowBltBufferStrategy(int numBuffers, boolean accelerated)
+    {
+      super(numBuffers,
+	    new BufferCapabilities(new ImageCapabilities(accelerated),
+				   new ImageCapabilities(accelerated),
+				   BufferCapabilities.FlipContents.COPIED));
+    }
+  }
+
+  /**
+   * A FlipBufferStrategy for windows.
+   */
+  private class WindowFlipBufferStrategy extends FlipBufferStrategy
+  {
+    /**
+     * Creates a flip buffer strategy for this window.
+     *
+     * @param numBuffers the number of buffers in this strategy
+     *
+     * @throws AWTException if the requested number of buffers is not
+     * supported
+     */
+    WindowFlipBufferStrategy(int numBuffers)
+      throws AWTException
+    {
+      super(numBuffers,
+	    new BufferCapabilities(new ImageCapabilities(true),
+				   new ImageCapabilities(true),
+				   BufferCapabilities.FlipContents.COPIED));
+    }
+  }
+
+  /**
+   * Creates a buffering strategy that manages how this window is
+   * repainted.  This method attempts to create the optimum strategy
+   * based on the desired number of buffers.  Hardware or software
+   * acceleration may be used.
+   *
+   * createBufferStrategy attempts different levels of optimization,
+   * but guarantees that some strategy with the requested number of
+   * buffers will be created even if it is not optimal.  First it
+   * attempts to create a page flipping strategy, then an accelerated
+   * blitting strategy, then an unaccelerated blitting strategy.
+   *
+   * Calling this method causes any existing buffer strategy to be
+   * destroyed.
+   *
+   * @param numBuffers the number of buffers in this strategy
+   *
+   * @throws IllegalArgumentException if requested number of buffers
+   * is less than one
+   * @throws IllegalStateException if this window is not displayable
+   *
+   * @since 1.4
+   */
+  public void createBufferStrategy(int numBuffers)
+  {
+    if (numBuffers < 1)
+      throw new IllegalArgumentException("Window.createBufferStrategy: number"
+					 + " of buffers is less than one");
+
+    if (!isDisplayable())
+      throw new IllegalStateException("Window.createBufferStrategy: window is"
+				      + " not displayable");
+
+    BufferStrategy newStrategy = null;
+
+    // try a flipping strategy
+    try
+      {
+	newStrategy = new WindowFlipBufferStrategy(numBuffers);
+      }
+    catch (AWTException e)
+      {
+      }
+
+    // fall back to an accelerated blitting strategy
+    if (newStrategy == null)
+      newStrategy = new WindowBltBufferStrategy(numBuffers, true);
+
+    bufferStrategy = newStrategy;
+  }
+
+  /**
+   * Creates a buffering strategy that manages how this window is
+   * repainted.  This method attempts to create a strategy based on
+   * the specified capabilities and throws an exception if the
+   * requested strategy is not supported.
+   *
+   * Calling this method causes any existing buffer strategy to be
+   * destroyed.
+   *
+   * @param numBuffers the number of buffers in this strategy
+   * @param caps the requested buffering capabilities
+   *
+   * @throws AWTException if the requested capabilities are not
+   * supported
+   * @throws IllegalArgumentException if requested number of buffers
+   * is less than one or if caps is null
+   *
+   * @since 1.4
+   */
+  public void createBufferStrategy(int numBuffers,
+				   BufferCapabilities caps)
+  {
+    if (numBuffers < 1)
+      throw new IllegalArgumentException("Window.createBufferStrategy: number"
+					 + " of buffers is less than one");
+
+    if (caps == null)
+      throw new IllegalArgumentException("Window.createBufferStrategy:"
+					 + " capabilities object is null");
+
+    // a flipping strategy was requested
+    if (caps.isPageFlipping())
+      {
+	try
+	  {
+	    bufferStrategy = new WindowFlipBufferStrategy(numBuffers);
+	  }
+	catch (AWTException e)
+	  {
+	  }
+      }
+    else
+      bufferStrategy = new WindowBltBufferStrategy(numBuffers, true);
+  }
+
+  /**
+   * Returns the buffer strategy used by the window.
+   *
+   * @return the buffer strategy.
+   * @since 1.4
+   */
+  public BufferStrategy getBufferStrategy()
+  {
+    return bufferStrategy;
+  }
+
+  /**
    * @since 1.2
    *
    * @deprecated
@@ -913,44 +1093,6 @@
     this.focusableWindowState = focusableWindowState;
   }
 
-  // setBoundsCallback is needed so that when a user moves a window,
-  // the Window's location can be updated without calling the peer's
-  // setBounds method.  When a user moves a window the peer window's
-  // location is updated automatically and the windowing system sends
-  // a message back to the application informing it of its updated
-  // dimensions.  We must update the AWT Window class with these new
-  // dimensions.  But we don't want to call the peer's setBounds
-  // method, because the peer's dimensions have already been updated.
-  // (Under X, having this method prevents Configure event loops when
-  // moving windows: Component.setBounds -> peer.setBounds ->
-  // postConfigureEvent -> Component.setBounds -> ...  In some cases
-  // Configure event loops cause windows to jitter back and forth
-  // continuously).
-  void setBoundsCallback (int x, int y, int w, int h)
-  {
-    if (this.x == x && this.y == y && width == w && height == h)
-      return;
-    invalidate();
-    boolean resized = width != w || height != h;
-    boolean moved = this.x != x || this.y != y;
-    this.x = x;
-    this.y = y;
-    width = w;
-    height = h;
-    if (resized && isShowing ())
-      {
-        ComponentEvent ce =
-          new ComponentEvent(this, ComponentEvent.COMPONENT_RESIZED);
-        getToolkit().getSystemEventQueue().postEvent(ce);
-      }
-    if (moved && isShowing ())
-      {
-        ComponentEvent ce =
-          new ComponentEvent(this, ComponentEvent.COMPONENT_MOVED);
-        getToolkit().getSystemEventQueue().postEvent(ce);
-      }
-  }
-
   /**
    * Generate a unique name for this window.
    *