Bug 741 HiDPI: Add new NativeSurfaceHolder interface to GLDrawable and NativeWindow; [AWT|SWT]NewtEventFactory use NativeSurfaceHolder as source, fixes pixel unit conversion

- Add new NativeSurfaceHolder interface to GLDrawable and NativeWindow, allowing NativeSurface access (pixel unit conversion)
  A NativeSurfaceHolder is e.g.:
    - NativeWindow (is-a)
      - NEWT [GL]Window

    - GLDrawable (has-a)
      - [AWT|SWT]GLCanvas

- [AWT|SWT]NewtEventFactory use NativeSurfaceHolder as source, fixes pixel unit conversion

4 files changed, 58 insertions, 1 deletions

diff --git a/src/nativewindow/classes/com/jogamp/nativewindow/awt/JAWTWindow.java b/src/nativewindow/classes/com/jogamp/nativewindow/awt/JAWTWindow.java
index ea6ec893e..690d77901 100644
--- a/src/nativewindow/classes/com/jogamp/nativewindow/awt/JAWTWindow.java
+++ b/src/nativewindow/classes/com/jogamp/nativewindow/awt/JAWTWindow.java
@@ -633,6 +633,9 @@ public abstract class JAWTWindow implements NativeWindow, OffscreenLayerSurface,
     return getHeight() * getPixelScale();
   }
 
+  @Override
+  public final NativeSurface getNativeSurface() { return this; }
+
   //
   // NativeWindow
   //
diff --git a/src/nativewindow/classes/javax/media/nativewindow/NativeSurfaceHolder.java b/src/nativewindow/classes/javax/media/nativewindow/NativeSurfaceHolder.java
new file mode 100644
index 000000000..b459ab74a
--- /dev/null
+++ b/src/nativewindow/classes/javax/media/nativewindow/NativeSurfaceHolder.java
@@ -0,0 +1,41 @@
+/**
+ * Copyright 2014 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+
+package javax.media.nativewindow;
+
+/**
+ * Accessor interface for implementing classes with ownership of a {@link NativeSurface}
+ * via an <i>is-a</i> or <i>has-a</i> relation.
+ */
+public interface NativeSurfaceHolder {
+  /**
+   * Returns the associated {@link NativeSurface} of this {@link NativeSurfaceHolder}.
+   */
+  public NativeSurface getNativeSurface();
+}
+
diff --git a/src/nativewindow/classes/javax/media/nativewindow/NativeWindow.java b/src/nativewindow/classes/javax/media/nativewindow/NativeWindow.java
index 5e5f99aac..7f71bc33b 100644
--- a/src/nativewindow/classes/javax/media/nativewindow/NativeWindow.java
+++ b/src/nativewindow/classes/javax/media/nativewindow/NativeWindow.java
@@ -68,7 +68,16 @@ import javax.media.nativewindow.util.Point;
  * which can create NativeWindow objects for its components.
  * </p>
  */
-public interface NativeWindow extends NativeSurface {
+public interface NativeWindow extends NativeSurface, NativeSurfaceHolder {
+
+  /**
+   * {@inheritDoc}
+   * <p>
+   * Returns this instance, which <i>is-a</i> {@link NativeSurface}.
+   * </p>
+   */
+  @Override
+  public NativeSurface getNativeSurface();
 
   /**
    * Destroys this window incl. releasing all related resources.
diff --git a/src/nativewindow/classes/jogamp/nativewindow/WrappedWindow.java b/src/nativewindow/classes/jogamp/nativewindow/WrappedWindow.java
index b93cbe7f5..403ec83c0 100644
--- a/src/nativewindow/classes/jogamp/nativewindow/WrappedWindow.java
+++ b/src/nativewindow/classes/jogamp/nativewindow/WrappedWindow.java
@@ -2,6 +2,7 @@ package jogamp.nativewindow;
 
 import javax.media.nativewindow.AbstractGraphicsConfiguration;
 import javax.media.nativewindow.AbstractGraphicsDevice;
+import javax.media.nativewindow.NativeSurface;
 import javax.media.nativewindow.NativeWindow;
 import javax.media.nativewindow.ProxySurface;
 import javax.media.nativewindow.UpstreamSurfaceHook;
@@ -66,6 +67,9 @@ public class WrappedWindow extends WrappedSurface implements NativeWindow {
     }
 
     @Override
+    public final NativeSurface getNativeSurface() { return this; }
+
+    @Override
     public NativeWindow getParent() {
         return null;
     }