HiDPI: Revise AWT GLCanvas/GLJPanel ScalableSurface: No setSurfaceScale(), have AWT toolkit define pixelScale only (simplification)

This aligns with Glenn's initial AWT patch commit e5e7514d649cd7dd28bbb8e04b72338dc09c2c83, i.e. removing redundancies...

Tested on Linux, Windows and MacOS w/ GLCanvas, GLJPanel and GLWindow using pixelScale values:
- Linux: 1, 2
- Windows: 1, 1.25, 2
- MacOS: 1, 2

2 files changed, 10 insertions, 1 deletions

diff --git a/src/newt/classes/com/jogamp/newt/Window.java b/src/newt/classes/com/jogamp/newt/Window.java
index 60ed53c9f..47c03557e 100644
--- a/src/newt/classes/com/jogamp/newt/Window.java
+++ b/src/newt/classes/com/jogamp/newt/Window.java
@@ -1,5 +1,5 @@
 /**
- * Copyright 2010 JogAmp Community. All rights reserved.
+ * Copyright 2010-2023 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:
diff --git a/src/newt/classes/com/jogamp/newt/opengl/GLWindow.java b/src/newt/classes/com/jogamp/newt/opengl/GLWindow.java
index 1435aa20a..cbac22e26 100644
--- a/src/newt/classes/com/jogamp/newt/opengl/GLWindow.java
+++ b/src/newt/classes/com/jogamp/newt/opengl/GLWindow.java
@@ -482,6 +482,15 @@ public class GLWindow extends GLAutoDrawableBase implements GLAutoDrawable, Wind
         return window.convertToPixelUnits(windowUnitsAndResult);
     }
 
+    /**
+     * {@inheritDoc}
+     * <p>
+     * This implementation returns true, i.e. supporting manual change of pixel-scale.
+     * </p>
+     */
+    @Override
+    public final boolean canSetSurfaceScale() { return true; }
+
     @Override
     public final boolean setSurfaceScale(final float[] pixelScale) {
         return window.setSurfaceScale(pixelScale);