Add 'DirectDataBufferInt' supporting NIO based BufferedImages

- Contains convenient method to create an NIO backed BufferedImage
  'BufferedImage createBufferedImage(int width, int height, int numComponents, Point location)'

Standalone test TestTiledPrintingNIOImageSwingAWT 'prints', i.e. renders offscreen,
the Frame into
  - a traditional array-backed BufferedImage
  - an NIO-backed backed BufferedImage

3 files changed, 536 insertions, 2 deletions

diff --git a/src/nativewindow/classes/com/jogamp/nativewindow/awt/DirectDataBufferInt.java b/src/nativewindow/classes/com/jogamp/nativewindow/awt/DirectDataBufferInt.java
new file mode 100644
index 000000000..d9c3c3791
--- /dev/null
+++ b/src/nativewindow/classes/com/jogamp/nativewindow/awt/DirectDataBufferInt.java
@@ -0,0 +1,238 @@
+/**
+ * Copyright 2013 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 com.jogamp.nativewindow.awt;
+
+import java.awt.Point;
+import java.awt.image.BufferedImage;
+import java.awt.image.ColorModel;
+import java.awt.image.DataBuffer;
+import java.awt.image.DirectColorModel;
+import java.awt.image.SampleModel;
+import java.awt.image.SinglePixelPackedSampleModel;
+import java.awt.image.WritableRaster;
+import java.nio.IntBuffer;
+
+import com.jogamp.common.nio.Buffers;
+
+/**
+ * {@link DataBuffer} specialization using NIO direct buffer of type {@link DataBuffer#TYPE_INT} as storage.
+ */
+public final class DirectDataBufferInt extends DataBuffer {
+    
+    public static class DirectWritableRaster extends WritableRaster {
+        protected DirectWritableRaster(SampleModel sampleModel, DirectDataBufferInt dataBuffer, Point origin) {
+            super(sampleModel, dataBuffer, origin);
+        }
+    }
+    
+    /**
+     * Creates a {@link BufferedImage} using an RGB[A] {@link DirectColorModel} 
+     * with an {@link DirectWritableRaster} utilizing a {@link DirectDataBufferInt} as storage.
+     *  
+     * @param width
+     * @param height
+     * @param numComponents 3 or 4 components, i.e. {@link BufferedImage#TYPE_INT_RGB} or {@link BufferedImage#TYPE_INT_RGBA}.
+     * @param location origin, if <code>null</code> 0/0 is assumed.
+     * @return
+     */
+    public static BufferedImage createBufferedImage(int width, int height, int numComponents, Point location) {
+        final int[] bandOffsets = new int[numComponents];
+        for (int i=0; i < numComponents; i++) {
+            bandOffsets[i] = i;
+        }
+        final int bpp, rmask, gmask, bmask, amask;
+        final ColorModel cm;
+        if( 4 == numComponents ) {
+            bpp = 32;
+            rmask = 0x00ff0000;
+            gmask = 0x0000ff00;
+            bmask = 0x000000ff;
+            amask = 0xff000000;
+            cm = ColorModel.getRGBdefault();
+        } else if( 3 == numComponents ) {
+            bpp = 24;
+            rmask = 0x00ff0000;
+            gmask = 0x0000ff00;
+            bmask = 0x000000ff;
+            amask = 0x0;
+            cm = new DirectColorModel(bpp, rmask, gmask, bmask, amask);
+        } else {
+            throw new IllegalArgumentException("numComponents must be [3..4], has "+numComponents);
+        }
+        final int[] bandMasks;
+        if ( 0 != amask ) {
+            bandMasks = new int[4];
+            bandMasks[3] = amask;
+        }
+        else {
+            bandMasks = new int[3];
+        }
+        bandMasks[0] = rmask;
+        bandMasks[1] = gmask;
+        bandMasks[2] = bmask;
+        
+        final DirectDataBufferInt dataBuffer = new DirectDataBufferInt(width*height);
+        if( null == location ) {
+            location = new Point(0,0);
+        }
+        final SinglePixelPackedSampleModel sppsm = new SinglePixelPackedSampleModel(dataBuffer.getDataType(), 
+                    width, height, width /* scanLineStride */, bandMasks);
+        // IntegerComponentRasters must haveinteger DataBuffers:
+        //    final WritableRaster raster = new IntegerInterleavedRaster(sppsm, dataBuffer, location);
+        // Not public:
+        //    final WritableRaster raster = new SunWritableRaster(sppsm, dataBuffer, location);
+        final WritableRaster raster = new DirectWritableRaster(sppsm, dataBuffer, location);
+        
+        return new BufferedImage (cm, raster, false /* isRasterPremultiplied */, null /* properties */);
+    }
+    
+    /** Default data bank. */
+    private IntBuffer data;
+
+    /** All data banks */
+    private IntBuffer bankdata[];
+    
+    /**
+     * Constructs an nio integer-based {@link DataBuffer} with a single bank 
+     * and the specified size.
+     *
+     * @param size The size of the {@link DataBuffer}.
+     */
+    public DirectDataBufferInt(int size) {
+        super(TYPE_INT, size);
+        data = Buffers.newDirectIntBuffer(size);
+        bankdata = new IntBuffer[1];
+        bankdata[0] = data;
+    }
+
+    /**
+     * Constructs an nio integer-based {@link DataBuffer} with the specified number of
+     * banks, all of which are the specified size.
+     *
+     * @param size The size of the banks in the {@link DataBuffer}.
+     * @param numBanks The number of banks in the a{@link DataBuffer}.
+     */
+    public DirectDataBufferInt(int size, int numBanks) {
+        super(TYPE_INT,size,numBanks);
+        bankdata = new IntBuffer[numBanks];
+        for (int i= 0; i < numBanks; i++) {
+            bankdata[i] = Buffers.newDirectIntBuffer(size);
+        }
+        data = bankdata[0];
+    }
+
+    /**
+     * Constructs an nio integer-based {@link DataBuffer} with a single bank using the
+     * specified array.
+     * <p>
+     * Only the first <code>size</code> elements should be used by accessors of
+     * this {@link DataBuffer}. <code>dataArray</code> must be large enough to
+     * hold <code>size</code> elements.
+     * </p>
+     *
+     * @param dataArray The integer array for the {@link DataBuffer}.
+     * @param size The size of the {@link DataBuffer} bank.
+     */
+    public DirectDataBufferInt(IntBuffer dataArray, int size) {
+        super(TYPE_INT,size);
+        data = dataArray;
+        bankdata = new IntBuffer[1];
+        bankdata[0] = data;
+    }
+
+    /**
+     * Returns the default (first) int data array in {@link DataBuffer}.
+     *    
+     * @return The first integer data array.
+     */
+    public IntBuffer getData() {
+        return data;
+    }
+
+    /** 
+     * Returns the data array for the specified bank.    
+     *   
+     * @param bank The bank whose data array you want to get. 
+     * @return The data array for the specified bank.
+     */
+    public IntBuffer getData(int bank) {
+        return bankdata[bank];
+    }
+
+    /**
+     * Returns the requested data array element from the first (default) bank.
+     * 
+     * @param i The data array element you want to get.
+     * @return The requested data array element as an integer.
+     * @see #setElem(int, int)
+     * @see #setElem(int, int, int)
+     */
+    public int getElem(int i) {
+        return data.get(i+offset);
+    }
+
+    /**
+     * Returns the requested data array element from the specified bank.
+     * 
+     * @param bank The bank from which you want to get a data array element.
+     * @param i The data array element you want to get.
+     * @return The requested data array element as an integer.
+     * @see #setElem(int, int)
+     * @see #setElem(int, int, int)
+     */
+    public int getElem(int bank, int i) {
+        return bankdata[bank].get(i+offsets[bank]);
+    }
+
+    /**
+     * Sets the requested data array element in the first (default) bank
+     * to the specified value.
+     *
+     * @param i The data array element you want to set.
+     * @param val The integer value to which you want to set the data array element.
+     * @see #getElem(int)
+     * @see #getElem(int, int)
+     */
+    public void setElem(int i, int val) {
+        data.put(i+offset, val);
+    }
+
+    /**
+     * Sets the requested data array element in the specified bank
+     * to the integer value <code>i</code>.
+     * @param bank The bank in which you want to set the data array element.
+     * @param i The data array element you want to set.
+     * @param val The integer value to which you want to set the specified data array element.
+     * @see #getElem(int)
+     * @see #getElem(int, int)
+     */
+    public void setElem(int bank, int i, int val) {
+        bankdata[bank].put(i+offsets[bank], val);
+    }
+}
+
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/tile/TestTiledPrintingNIOImageSwingAWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/tile/TestTiledPrintingNIOImageSwingAWT.java
new file mode 100644
index 000000000..ad699c0f5
--- /dev/null
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/tile/TestTiledPrintingNIOImageSwingAWT.java
@@ -0,0 +1,296 @@
+/**
+ * Copyright 2013 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 com.jogamp.opengl.test.junit.jogl.tile;
+
+import java.awt.BorderLayout;
+import java.awt.Button;
+import java.awt.Container;
+import java.awt.Dimension;
+import java.awt.Frame;
+import java.awt.Graphics2D;
+import java.awt.Insets;
+import java.awt.Label;
+import java.awt.RenderingHints;
+import java.awt.image.BufferedImage;
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.lang.reflect.InvocationTargetException;
+
+import javax.imageio.ImageIO;
+import javax.media.opengl.GLCapabilities;
+import javax.media.opengl.GLProfile;
+import javax.media.opengl.awt.GLJPanel;
+import javax.swing.BorderFactory;
+import javax.swing.JButton;
+import javax.swing.JComponent;
+import javax.swing.JFrame;
+import javax.swing.JLayeredPane;
+import javax.swing.JPanel;
+import javax.swing.SwingUtilities;
+
+import org.junit.AfterClass;
+import org.junit.Assert;
+import org.junit.BeforeClass;
+import org.junit.FixMethodOrder;
+import org.junit.Test;
+import org.junit.runners.MethodSorters;
+
+import com.jogamp.common.util.awt.AWTEDTExecutor;
+import com.jogamp.nativewindow.awt.AWTPrintLifecycle;
+import com.jogamp.nativewindow.awt.DirectDataBufferInt;
+import com.jogamp.opengl.test.junit.jogl.demos.es2.RedSquareES2;
+import com.jogamp.opengl.test.junit.jogl.demos.gl2.Gears;
+import com.jogamp.opengl.test.junit.util.AWTRobotUtil;
+import com.jogamp.opengl.test.junit.util.UITestCase;
+import com.jogamp.opengl.util.texture.TextureIO;
+
+@FixMethodOrder(MethodSorters.NAME_ASCENDING)
+public class TestTiledPrintingNIOImageSwingAWT extends UITestCase  {
+
+    static boolean waitForKey = false;
+    /** only when run manually .. */
+    static boolean allow600dpi = false;
+    static GLProfile glp;
+    static int width, height;
+    
+    @BeforeClass
+    public static void initClass() {
+        if(GLProfile.isAvailable(GLProfile.GL2)) {
+            glp = GLProfile.get(GLProfile.GL2);
+            Assert.assertNotNull(glp);
+            width  = 640;
+            height = 480;
+        } else {
+            setTestSupported(false);
+        }
+        // Runtime.getRuntime().traceInstructions(true);
+        // Runtime.getRuntime().traceMethodCalls(true);
+    }
+
+    @AfterClass
+    public static void releaseClass() {
+    }
+    
+    protected void printOffscreenToFile(final BufferedImage image, final Frame frame, final GLCapabilities caps, final int num, final String detail) {
+        final Insets frameInsets = frame.getInsets();
+        final int frameWidth = frame.getWidth();
+        final int frameHeight= frame.getHeight();
+        final int imageWidth = image.getWidth();
+        final int imageHeight= image.getHeight();
+        final double scaleComp72;
+        {
+            final double frameBorderW = frameInsets.left + frameInsets.right;
+            final double frameBorderH = frameInsets.top + frameInsets.bottom;
+            final double sx = (double)imageWidth / ( frameWidth + frameBorderW ); 
+            final double sy = (double)imageHeight / ( frameHeight + frameBorderH );
+            scaleComp72 = Math.min(sx, sy);
+        }
+        System.err.println("PRINT DPI: scaleComp72 "+scaleComp72+", image-size "+imageWidth+"x"+imageHeight+", frame[border "+frameInsets+", size "+frameWidth+"x"+frameHeight+"]");
+        
+        System.err.println("XXX: image "+image);
+        System.err.println("XXX: cm "+image.getColorModel());
+        System.err.println("XXX: raster "+image.getRaster());
+        System.err.println("XXX: dataBuffer "+image.getRaster().getDataBuffer());
+        
+        AWTEDTExecutor.singleton.invoke(true, new Runnable() {
+            public void run() {
+                final Graphics2D g2d = (Graphics2D) image.getGraphics();
+                g2d.setClip(0, 0, image.getWidth(), image.getHeight());
+                g2d.scale(scaleComp72, scaleComp72);
+                g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
+                g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
+                
+                // frame.paintAll(g2d);
+                final AWTPrintLifecycle.Context ctx = AWTPrintLifecycle.Context.setupPrint(frame, 1.0/scaleComp72, 1.0/scaleComp72, 0);
+                try {
+                    frame.printAll(g2d);
+                } finally {
+                    ctx.releasePrint();
+                }
+                // to file
+                final String fname = getSnapshotFilename(num, detail, caps, image.getWidth(), image.getHeight(), false, TextureIO.PNG, null);
+                System.err.println("XXX file "+fname);
+                final File fout = new File(fname); 
+                try {
+                    ImageIO.write(image, "png", fout);
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+            } });
+    }
+    
+    protected void runTestGL(final GLCapabilities caps, final boolean layered) throws InterruptedException, InvocationTargetException {
+        final int layerStepX = width/6, layerStepY = height/6;
+        final Dimension glc_sz = new Dimension(layered ? width - 2*layerStepX : width/2, layered ? height - 2*layerStepY : height);
+        final GLJPanel glJPanel1 = new GLJPanel(caps);
+        Assert.assertNotNull(glJPanel1);        
+        glJPanel1.setMinimumSize(glc_sz);
+        glJPanel1.setPreferredSize(glc_sz);
+        if( layered ) {
+            glJPanel1.setBounds(layerStepX/2, layerStepY/2, glc_sz.width, glc_sz.height);
+        } else {
+            glJPanel1.setBounds(0, 0, glc_sz.width, glc_sz.height);
+        }
+        glJPanel1.addGLEventListener(new Gears());
+        
+        final GLJPanel glJPanel2 = new GLJPanel(caps);
+        Assert.assertNotNull(glJPanel2);        
+        glJPanel2.setMinimumSize(glc_sz);
+        glJPanel2.setPreferredSize(glc_sz);
+        if( layered ) {
+            glJPanel2.setBounds(3*layerStepY, 2*layerStepY, glc_sz.width, glc_sz.height);
+        } else {
+            glJPanel2.setBounds(0, 0, glc_sz.width, glc_sz.height);
+        }
+        glJPanel2.addGLEventListener(new RedSquareES2());
+        // glJPanel2.addGLEventListener(new Gears());
+        
+        final JComponent demoPanel;
+        if( layered ) {
+            glJPanel1.setOpaque(true);
+            glJPanel2.setOpaque(false);
+            final Dimension lsz = new Dimension(width, height);
+            demoPanel = new JLayeredPane();
+            demoPanel.setMinimumSize(lsz);
+            demoPanel.setPreferredSize(lsz);
+            demoPanel.setBounds(0, 0, lsz.width, lsz.height);
+            demoPanel.setBorder(BorderFactory.createTitledBorder("Layered Pane"));
+            demoPanel.add(glJPanel1, JLayeredPane.DEFAULT_LAYER);
+            demoPanel.add(glJPanel2, Integer.valueOf(1));
+            final JButton tb = new JButton("On Top");
+            tb.setBounds(4*layerStepY, 3*layerStepY, 100, 50);
+            demoPanel.add(tb, Integer.valueOf(2));
+        } else {
+            demoPanel = new JPanel();
+            demoPanel.add(glJPanel1);
+            demoPanel.add(glJPanel2);
+        }
+        
+        final JFrame frame = new JFrame("Swing Print");
+        Assert.assertNotNull(frame);
+        
+        final Button print72DPIButton = new Button("72dpi"); // dummy
+        final Button print300DPIButton = new Button("300dpi"); // dummy
+        final Button print600DPIButton = new Button("600dpi"); // dummy
+            
+        final JPanel printPanel = new JPanel();
+        printPanel.add(print72DPIButton);
+        printPanel.add(print300DPIButton);
+        printPanel.add(print600DPIButton);
+        final JPanel southPanel = new JPanel();
+        southPanel.add(new Label("South"));
+        final JPanel eastPanel = new JPanel();
+        eastPanel.add(new Label("East"));
+        final JPanel westPanel = new JPanel();
+        westPanel.add(new Label("West"));
+        
+        SwingUtilities.invokeAndWait(new Runnable() {
+                public void run() {
+                    final Container fcont = frame.getContentPane();
+                    fcont.setLayout(new BorderLayout());
+                    fcont.add(printPanel, BorderLayout.NORTH);
+                    fcont.add(demoPanel, BorderLayout.CENTER);
+                    fcont.add(southPanel, BorderLayout.SOUTH);
+                    fcont.add(eastPanel, BorderLayout.EAST);
+                    fcont.add(westPanel, BorderLayout.WEST);
+                    fcont.validate();
+                    frame.pack();
+                    frame.setVisible(true);
+                } } ) ;
+        
+        Assert.assertEquals(true,  AWTRobotUtil.waitForVisible(frame, true));
+        Assert.assertEquals(true,  AWTRobotUtil.waitForRealized(glJPanel1, true));
+        Assert.assertEquals(true,  AWTRobotUtil.waitForRealized(glJPanel2, true));
+        
+        // paint offscreen: array 72dpi
+        {
+            final BufferedImage image = new BufferedImage(frame.getWidth(), frame.getHeight(), BufferedImage.TYPE_INT_ARGB);
+            printOffscreenToFile(image, frame, caps, 0, "array_072dpi");
+        }
+        // paint offscreen: NIO 72dpi
+        {
+            final BufferedImage image = DirectDataBufferInt.createBufferedImage(frame.getWidth(), frame.getHeight(), 4, null /* location */);
+            printOffscreenToFile(image, frame, caps, 1, "newio_072dpi");
+        }
+        // paint offscreen: NIO 600dpi
+        {
+            final int scale = (int) ( 600.0 / 72.0 + 0.5 ); 
+            final BufferedImage image = DirectDataBufferInt.createBufferedImage(frame.getWidth()*scale, frame.getHeight()*scale, 4, null /* location */);
+            printOffscreenToFile(image, frame, caps, 2, "newio_600dpi");
+        }
+        
+        Assert.assertNotNull(frame);
+        Assert.assertNotNull(glJPanel1);
+        Assert.assertNotNull(glJPanel2);
+
+        javax.swing.SwingUtilities.invokeAndWait(new Runnable() {
+            public void run() {
+                frame.setVisible(false);
+            }});
+        Assert.assertEquals(false, frame.isVisible());
+        javax.swing.SwingUtilities.invokeAndWait(new Runnable() {
+            public void run() {
+                final Frame _frame = frame;
+                _frame.remove(demoPanel);
+                _frame.dispose();
+            }});
+    }
+
+    @Test
+    public void test01_Offscreen_aa0() throws InterruptedException, InvocationTargetException {
+        GLCapabilities caps = new GLCapabilities(glp);
+        runTestGL(caps, false);
+    }
+    
+    static long duration = 500; // ms
+
+    public static void main(String args[]) {
+        allow600dpi = true;
+        for(int i=0; i<args.length; i++) {
+            if(args[i].equals("-time")) {
+                i++;
+                try {
+                    duration = Integer.parseInt(args[i]);
+                } catch (Exception ex) { ex.printStackTrace(); }
+            } else if(args[i].equals("-wait")) {
+                waitForKey = true;
+            }
+        }
+        if(waitForKey) {
+            BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
+            System.err.println("Press enter to continue");
+            try {
+                System.err.println(stdin.readLine());
+            } catch (IOException e) { }
+        }
+        org.junit.runner.JUnitCore.main(TestTiledPrintingNIOImageSwingAWT.class.getName());
+    }
+}
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/tile/TiledPrintingAWTBase.java b/src/test/com/jogamp/opengl/test/junit/jogl/tile/TiledPrintingAWTBase.java
index c23d51c51..10d8b186d 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/tile/TiledPrintingAWTBase.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/tile/TiledPrintingAWTBase.java
@@ -155,8 +155,8 @@ public abstract class TiledPrintingAWTBase extends UITestCase implements Printab
             final int frameHeight= printContainer.getHeight();
             final double scaleComp72;
             {
-                final int frameBorderW = frameInsets.left + frameInsets.right;
-                final int frameBorderH = frameInsets.top + frameInsets.bottom;
+                final double frameBorderW = frameInsets.left + frameInsets.right;
+                final double frameBorderH = frameInsets.top + frameInsets.bottom;
                 final double sx = pf.getImageableWidth() / ( frameWidth + frameBorderW ); 
                 final double sy = pf.getImageableHeight() / ( frameHeight + frameBorderH );
                 scaleComp72 = Math.min(sx, sy);