Test: Don't resize frame, tweek print-matrix; AWTPrintLifecycle: Add scale and convenient AWT container traversal context; GLCanvas/GLJPanel properly handle existing MSAA and req. AA;

- Test: Don't resize frame, tweek print-matrix
  - Use scaleComp72 to scale the frame to fit on page,
    i.e. global print matrix

  - Use scaleGLMatXY = 72.0 / glDPI
    to locally scale on the GL drawable as being passed to AWTPrintLifecycle.setup(..)

  - Hence frame stays untouched/stable, no need for 'offscreen' print test,
    which is removed.

- AWTPrintLifecycle: Add scale and convenient AWT container traversal context
  Use a simple decoration for all AWTPrintLifecycle impl. components within a container:

    final AWTPrintLifecycle.Context ctx = AWTPrintLifecycle.Context.setupPrint(frame, g2d, scaleGLMatXY, scaleGLMatXY);
    try {
    } finally {
       ctx.releasePrint();
    }

- GLCanvas/GLJPanel properly handle existing MSAA and req. AA;
  - GLCanvas: Workaround bug where onscreen MSAA cannot switch to offscreen FBO,
              i.e. stay 'onscreen'
  - GLJPanel: Use new offscreen FBO if MSAA is requested and not yet used.

- GLJPanel.Offscreen.postGL(): always swapBufer(), was missing for !GLSL swapping

Results GLCanvas / GLJPanel:
  - Good scaling
  - Stable behavior / visibility
  - High DPI mode works

1 files changed, 48 insertions, 1 deletions

diff --git a/src/jogl/classes/javax/media/opengl/awt/AWTPrintLifecycle.java b/src/jogl/classes/javax/media/opengl/awt/AWTPrintLifecycle.java
index 077ee42a9..293bdb809 100644
--- a/src/jogl/classes/javax/media/opengl/awt/AWTPrintLifecycle.java
+++ b/src/jogl/classes/javax/media/opengl/awt/AWTPrintLifecycle.java
@@ -29,9 +29,12 @@ package javax.media.opengl.awt;
 
 import javax.media.opengl.GLAutoDrawable;
 import java.awt.Component;
+import java.awt.Container;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
 
+import jogamp.nativewindow.awt.AWTMisc;
+
 /**
  * Interface describing print lifecycle to support AWT printing
  * on AWT {@link GLAutoDrawable}s.
@@ -41,11 +44,55 @@ public interface AWTPrintLifecycle {
     /**
      * Shall be called before {@link Component#print(Graphics)}.
      * @param g2d the {@link Graphics2D} instance, which will be used for printing.
+     * @param scaleMatX {@link Graphics2D} {@link Graphics2D#scale(double, double) scaling factor}, i.e. rendering 1/scaleMatX * width pixels
+     * @param scaleMatY {@link Graphics2D} {@link Graphics2D#scale(double, double) scaling factor}, i.e. rendering 1/scaleMatY * height pixels
      */
-    void setupPrint(Graphics2D g2d);
+    void setupPrint(Graphics2D g2d, double scaleMatX, double scaleMatY);
     
     /**
      * Shall be called after very last {@link Component#print(Graphics)}.
      */
     void releasePrint();
+
+    public static class Context {
+        public static Context setupPrint(Container c, Graphics2D g2d, double scaleMatX, double scaleMatY) {
+            final Context t = new Context(c, g2d, scaleMatX, scaleMatY);
+            t.setupPrint(c);
+            return t;
+        }
+
+        public void releasePrint() {
+            count = AWTMisc.performAction(cont, AWTPrintLifecycle.class, releaseAction);
+        }
+        
+        public int getCount() { return count; }
+        
+        private final Container cont;
+        private final Graphics2D g2d;
+        private final double scaleMatX;
+        private final double scaleMatY;
+        private int count;
+        
+        private final AWTMisc.ComponentAction setupAction = new AWTMisc.ComponentAction() {
+            @Override
+            public void run(Component c) {
+                ((AWTPrintLifecycle)c).setupPrint(g2d, scaleMatX, scaleMatY);
+            } };
+        private final AWTMisc.ComponentAction releaseAction = new AWTMisc.ComponentAction() {
+            @Override
+            public void run(Component c) {
+                ((AWTPrintLifecycle)c).releasePrint();
+            } };
+
+        private Context(Container c, Graphics2D g2d, double scaleMatX, double scaleMatY) {
+            this.cont = c;
+            this.g2d = g2d;
+            this.scaleMatX = scaleMatX;
+            this.scaleMatY = scaleMatY;
+            this.count = 0;
+        }
+        private void setupPrint(Container c) {
+            count = AWTMisc.performAction(c, AWTPrintLifecycle.class, setupAction);
+        }
+    }
 }