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-rw-r--r--src/jogl/classes/jogamp/opengl/awt/AWTTilePainter.java39
-rw-r--r--src/test/com/jogamp/opengl/test/junit/jogl/tile/TestTiledPrintingGearsSwingAWT.java11
-rw-r--r--src/test/com/jogamp/opengl/test/junit/jogl/tile/TestTiledPrintingGearsSwingAWT2.java340
-rw-r--r--src/test/com/jogamp/opengl/test/junit/jogl/tile/TransparentPanel.java59
4 files changed, 427 insertions, 22 deletions
diff --git a/src/jogl/classes/jogamp/opengl/awt/AWTTilePainter.java b/src/jogl/classes/jogamp/opengl/awt/AWTTilePainter.java
index 0b24fadae..0aab049a0 100644
--- a/src/jogl/classes/jogamp/opengl/awt/AWTTilePainter.java
+++ b/src/jogl/classes/jogamp/opengl/awt/AWTTilePainter.java
@@ -196,6 +196,7 @@ public class AWTTilePainter {
final Rectangle2D dImageSizeOrig = new Rectangle2D.Double(0, 0, width, height);
// Retrieve scaled image-size and clip-bounds
+ // Note: Clip bounds lie within image-size!
final Rectangle2D dImageSizeScaled, dClipScaled;
{
final AffineTransform scaledATI;
@@ -212,13 +213,15 @@ public class AWTTilePainter {
s0 = saveAT.createTransformedShape(dClipOrig); // user in
dClipScaled = scaledATI.createTransformedShape(s0).getBounds2D(); // scaled out
}
- }
+ }
final Rectangle iClipScaled = getRoundedRect(dClipScaled);
final Rectangle iImageSizeScaled = getRoundedRect(dImageSizeScaled);
- scaledYOffset = iClipScaled.y;
renderer.setImageSize(iImageSizeScaled.width, iImageSizeScaled.height);
renderer.clipImageSize(iClipScaled.width, iClipScaled.height);
final int clipH = Math.min(iImageSizeScaled.height, iClipScaled.height);
+ // Clip bounds lie within image-size!
+ // GL y-offset is lower-left origin, AWT y-offset upper-left.
+ scaledYOffset = iClipScaled.y;
renderer.setTileOffset(iClipScaled.x, iImageSizeScaled.height - ( iClipScaled.y + clipH ));
// Scale actual Grahics2D matrix
@@ -294,10 +297,11 @@ public class AWTTilePainter {
final DimensionImmutable cis = renderer.getClippedImageSize();
final int tWidth = renderer.getParam(TileRendererBase.TR_CURRENT_TILE_WIDTH);
final int tHeight = renderer.getParam(TileRendererBase.TR_CURRENT_TILE_HEIGHT);
- final int pX = renderer.getParam(TileRendererBase.TR_CURRENT_TILE_X_POS);
- final int pY = renderer.getParam(TileRendererBase.TR_CURRENT_TILE_Y_POS);
- final int pYOff = renderer.getParam(TileRenderer.TR_TILE_Y_OFFSET);
- final int pYf = cis.getHeight() - ( pY - pYOff + tHeight ) + scaledYOffset;
+ final int tY = renderer.getParam(TileRendererBase.TR_CURRENT_TILE_Y_POS);
+ final int tYOff = renderer.getParam(TileRenderer.TR_TILE_Y_OFFSET);
+ final int imgYOff = flipVertical ? 0 : renderer.getParam(TileRenderer.TR_TILE_HEIGHT) - tHeight; // imgYOff will be cut-off via sub-image
+ final int pX = renderer.getParam(TileRendererBase.TR_CURRENT_TILE_X_POS); // tileX == pX
+ final int pY = cis.getHeight() - ( tY - tYOff + tHeight ) + scaledYOffset;
// Copy temporary data into raster of BufferedImage for faster
// blitting Note that we could avoid this copy in the cases
@@ -309,7 +313,7 @@ public class AWTTilePainter {
_counter,
renderer.getParam(TileRenderer.TR_CURRENT_COLUMN), renderer.getParam(TileRenderer.TR_CURRENT_ROW),
tWidth, tHeight,
- pX, pY, pYOff, pX, pYf).replace(' ', '_');
+ pX, tY, tYOff, pX, pY).replace(' ', '_');
System.err.println("XXX file "+fname);
final File fout = new File(fname);
try {
@@ -340,7 +344,7 @@ public class AWTTilePainter {
_counter,
renderer.getParam(TileRenderer.TR_CURRENT_COLUMN), renderer.getParam(TileRenderer.TR_CURRENT_ROW),
tWidth, tHeight,
- pX, pY, pYOff, pX, pYf).replace(' ', '_');
+ pX, tY, tYOff, pX, pY).replace(' ', '_');
System.err.println("XXX file "+fname);
final File fout = new File(fname);
try {
@@ -351,17 +355,15 @@ public class AWTTilePainter {
_counter++;
}
// Draw resulting image in one shot
- final Shape oClip = g2d.getClip();
- // g2d.clipRect(pX, pYf, tWidth, tHeight);
- final BufferedImage outImage = dstImage.getSubimage(0, 0, tWidth, tHeight); // instead of clipping
- final boolean drawDone = g2d.drawImage(outImage, pX, pYf, null); // Null ImageObserver since image data is ready.
- // final boolean drawDone = g2d.drawImage(dstImage, pX, pYf, dstImage.getWidth(), dstImage.getHeight(), null); // Null ImageObserver since image data is ready.
+ final BufferedImage outImage = dstImage.getSubimage(0, imgYOff, tWidth, tHeight);
+ final boolean drawDone = g2d.drawImage(outImage, pX, pY, null); // Null ImageObserver since image data is ready.
if( verbose ) {
- System.err.println("XXX tile-post.X clippedImageSize "+cis);
- System.err.println("XXX tile-post.X pYf "+cis.getHeight()+" - ( "+pY+" - "+pYOff+" + "+tHeight+" ) "+scaledYOffset+" = "+ pYf);
- System.err.println("XXX tile-post.X clip "+oClip+" + "+pX+" / [pY "+pY+", pYOff "+pYOff+", pYf "+pYf+"] "+tWidth+"x"+tHeight+" -> "+g2d.getClip());
+ final Shape oClip = g2d.getClip();
+ System.err.println("XXX tile-post.X tile 0 / "+imgYOff+" "+tWidth+"x"+tHeight+", clippedImgSize "+cis);
+ System.err.println("XXX tile-post.X pYf "+cis.getHeight()+" - ( "+tY+" - "+tYOff+" + "+tHeight+" ) "+scaledYOffset+" = "+ pY);
+ System.err.println("XXX tile-post.X clip "+oClip+" + "+pX+" / [pY "+tY+", pYOff "+tYOff+", pYf "+pY+"] -> "+g2d.getClip());
g2d.setColor(Color.BLACK);
- g2d.drawRect(pX, pYf, tWidth, tHeight);
+ g2d.drawRect(pX, pY, tWidth, tHeight);
if( null != oClip ) {
final Rectangle r = oClip.getBounds();
g2d.setColor(Color.YELLOW);
@@ -370,9 +372,8 @@ public class AWTTilePainter {
System.err.println("XXX tile-post.X "+renderer);
System.err.println("XXX tile-post.X dst-img "+dstImage.getWidth()+"x"+dstImage.getHeight());
System.err.println("XXX tile-post.X out-img "+outImage.getWidth()+"x"+outImage.getHeight());
- System.err.println("XXX tile-post.X y-flip "+flipVertical+" -> "+pX+"/"+pYf+", drawDone "+drawDone);
+ System.err.println("XXX tile-post.X y-flip "+flipVertical+" -> "+pX+"/"+pY+", drawDone "+drawDone);
}
- // g2d.setClip(oClip);
}
@Override
public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {}
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/tile/TestTiledPrintingGearsSwingAWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/tile/TestTiledPrintingGearsSwingAWT.java
index 476513207..b4f5ad988 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/tile/TestTiledPrintingGearsSwingAWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/tile/TestTiledPrintingGearsSwingAWT.java
@@ -68,6 +68,7 @@ import com.jogamp.newt.event.awt.AWTWindowAdapter;
import com.jogamp.opengl.test.junit.jogl.demos.es1.RedSquareES1;
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.MiscUtils;
import com.jogamp.opengl.test.junit.util.QuitAdapter;
import com.jogamp.opengl.util.Animator;
@@ -306,9 +307,13 @@ public class TestTiledPrintingGearsSwingAWT extends TiledPrintingAWTBase {
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(); }
+ duration = MiscUtils.atol(args[i], duration);
+ } else if(args[i].equals("-width")) {
+ i++;
+ width = MiscUtils.atoi(args[i], width);
+ } else if(args[i].equals("-height")) {
+ i++;
+ height = MiscUtils.atoi(args[i], height);
} else if(args[i].equals("-600dpi")) {
allow600dpi = true;
} else if(args[i].equals("-wait")) {
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/tile/TestTiledPrintingGearsSwingAWT2.java b/src/test/com/jogamp/opengl/test/junit/jogl/tile/TestTiledPrintingGearsSwingAWT2.java
new file mode 100644
index 000000000..f619ec9a1
--- /dev/null
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/tile/TestTiledPrintingGearsSwingAWT2.java
@@ -0,0 +1,340 @@
+/**
+ * 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.Label;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.print.PageFormat;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.lang.reflect.InvocationTargetException;
+
+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.os.Platform;
+import com.jogamp.newt.event.TraceKeyAdapter;
+import com.jogamp.newt.event.TraceWindowAdapter;
+import com.jogamp.newt.event.awt.AWTKeyAdapter;
+import com.jogamp.newt.event.awt.AWTWindowAdapter;
+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.MiscUtils;
+import com.jogamp.opengl.test.junit.util.QuitAdapter;
+import com.jogamp.opengl.util.Animator;
+
+@FixMethodOrder(MethodSorters.NAME_ASCENDING)
+public class TestTiledPrintingGearsSwingAWT2 extends TiledPrintingAWTBase {
+
+ static boolean waitForKey = 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 = 560; // 640;
+ height = 420; // 480;
+ } else {
+ setTestSupported(false);
+ }
+ // Runtime.getRuntime().traceInstructions(true);
+ // Runtime.getRuntime().traceMethodCalls(true);
+ }
+
+ @AfterClass
+ public static void releaseClass() {
+ }
+
+ protected void runTestGL(GLCapabilities caps, final boolean addLayout, boolean layered, boolean useAnim) throws InterruptedException, InvocationTargetException {
+ final Dimension glc_sz = new Dimension(width, height);
+ final GLJPanel glJPanel1 = new GLJPanel(caps);
+ Assert.assertNotNull(glJPanel1);
+ glJPanel1.setMinimumSize(glc_sz);
+ glJPanel1.setPreferredSize(glc_sz);
+ glJPanel1.setBounds(0, 0, glc_sz.width, glc_sz.height);
+ glJPanel1.addGLEventListener(new Gears());
+
+ final JComponent tPanel, demoPanel;
+ if( layered ) {
+ glJPanel1.setOpaque(true);
+ final JButton tb = new JButton("On Top");
+ tb.setBounds(width/2, height/2, 200, 50);
+ if( addLayout ) {
+ tPanel = null;
+ 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(tb, Integer.valueOf(2));
+ } else {
+ tPanel = new TransparentPanel();
+ tPanel.setBounds(0, 0, width, height);
+ tPanel.setLayout(null);
+ tPanel.add(tb);
+ demoPanel = glJPanel1;
+ }
+ } else {
+ tPanel = null;
+ if( addLayout ) {
+ demoPanel = new JPanel();
+ demoPanel.add(glJPanel1);
+ } else {
+ demoPanel = glJPanel1;
+ }
+ }
+
+ final JFrame frame = new JFrame("Swing Print");
+ Assert.assertNotNull(frame);
+
+ final ActionListener print72DPIAction = new ActionListener() {
+ public void actionPerformed(ActionEvent e) {
+ doPrintManual(frame, 72, 0);
+ } };
+ final ActionListener print150DPIAction = new ActionListener() {
+ public void actionPerformed(ActionEvent e) {
+ doPrintManual(frame, 150, -1);
+ } };
+ final ActionListener print300DPIAction = new ActionListener() {
+ public void actionPerformed(ActionEvent e) {
+ doPrintManual(frame, 300, -1);
+ } };
+ final Button print72DPIButton = new Button("72dpi");
+ print72DPIButton.addActionListener(print72DPIAction);
+ final Button print150DPIButton = new Button("150dpi");
+ print150DPIButton.addActionListener(print150DPIAction);
+ final Button print300DPIButton = new Button("300dpi");
+ print300DPIButton.addActionListener(print300DPIAction);
+
+ final JPanel printPanel = new JPanel();
+ printPanel.add(print72DPIButton);
+ printPanel.add(print150DPIButton);
+ printPanel.add(print300DPIButton);
+ 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"));
+
+ final Animator animator = useAnim ? new Animator() : null;
+ if( null != animator ) {
+ animator.add(glJPanel1);
+ }
+ QuitAdapter quitAdapter = new QuitAdapter();
+
+ new AWTKeyAdapter(new TraceKeyAdapter(quitAdapter)).addTo(glJPanel1);
+ new AWTWindowAdapter(new TraceWindowAdapter(quitAdapter)).addTo(frame);
+
+ SwingUtilities.invokeAndWait(new Runnable() {
+ public void run() {
+ final Container fcont = frame.getContentPane();
+ if( addLayout ) {
+ 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();
+ } else {
+ frame.setSize(glc_sz);
+ fcont.setLayout(null);
+ if( null != tPanel ) {
+ fcont.add(tPanel);
+ }
+ fcont.add(demoPanel);
+ }
+ frame.setVisible(true);
+ } } ) ;
+
+ Assert.assertEquals(true, AWTRobotUtil.waitForVisible(frame, true));
+ Assert.assertEquals(true, AWTRobotUtil.waitForRealized(glJPanel1, true));
+
+ if( null != animator ) {
+ animator.setUpdateFPSFrames(60, System.err);
+ animator.start();
+ Assert.assertEquals(true, animator.isAnimating());
+ }
+
+ final long t0 = System.currentTimeMillis();
+ long t1 = t0;
+ boolean printDone = false;
+ while( !quitAdapter.shouldQuit() && ( 0 == duration || ( t1 - t0 ) < duration ) ) {
+ Thread.sleep(200);
+ if( !printDone ) {
+ printDone = true;
+ {
+ // No AA needed for 150 dpi and greater :)
+ final PrintableBase p = doPrintAuto(frame, PageFormat.PORTRAIT, null, false, 150, -1);
+ waitUntilPrintJobsIdle(p);
+ }
+ }
+ t1 = System.currentTimeMillis();
+ }
+
+ Assert.assertNotNull(frame);
+ Assert.assertNotNull(glJPanel1);
+
+ if( null != animator ) {
+ animator.stop();
+ Assert.assertEquals(false, animator.isAnimating());
+ }
+ 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_norm_layout0_layered0() throws InterruptedException, InvocationTargetException {
+ GLCapabilities caps = new GLCapabilities(glp);
+ runTestGL(caps, false /* addLayout */, false /* layered */, false /* useAnim */);
+ }
+
+ @Test
+ public void test02_norm_layout1_layered0() throws InterruptedException, InvocationTargetException {
+ GLCapabilities caps = new GLCapabilities(glp);
+ runTestGL(caps, true /* addLayout */, false /* layered */, false /* useAnim */);
+ }
+
+ @Test
+ public void test03_norm_layout0_layered1() throws InterruptedException, InvocationTargetException {
+ GLCapabilities caps = new GLCapabilities(glp);
+ runTestGL(caps, false /* addLayout */, true /* layered */, false /* useAnim */);
+ }
+
+ @Test
+ public void test04_norm_layout1_layered1() throws InterruptedException, InvocationTargetException {
+ GLCapabilities caps = new GLCapabilities(glp);
+ runTestGL(caps, true /* addLayout */, true /* layered */, false /* useAnim */);
+ }
+
+ @Test
+ public void test11_bitm_layout0_layered0() throws InterruptedException, InvocationTargetException {
+ if( Platform.OSType.WINDOWS != Platform.getOSType() ) {
+ return;
+ }
+ GLCapabilities caps = new GLCapabilities(glp);
+ caps.setBitmap(true);
+ runTestGL(caps, false /* addLayout */, false /* layered */, false /* useAnim */);
+ }
+
+ @Test
+ public void test12_bitm_layout1_layered0() throws InterruptedException, InvocationTargetException {
+ if( Platform.OSType.WINDOWS != Platform.getOSType() ) {
+ return;
+ }
+ GLCapabilities caps = new GLCapabilities(glp);
+ caps.setBitmap(true);
+ runTestGL(caps, true /* addLayout */, false /* layered */, false /* useAnim */);
+ }
+
+ @Test
+ public void test13_bitm_layout0_layered1() throws InterruptedException, InvocationTargetException {
+ if( Platform.OSType.WINDOWS != Platform.getOSType() ) {
+ return;
+ }
+ GLCapabilities caps = new GLCapabilities(glp);
+ caps.setBitmap(true);
+ runTestGL(caps, false /* addLayout */, true /* layered */, false /* useAnim */);
+ }
+
+ @Test
+ public void test14_bitm_layout1_layered1() throws InterruptedException, InvocationTargetException {
+ if( Platform.OSType.WINDOWS != Platform.getOSType() ) {
+ return;
+ }
+ GLCapabilities caps = new GLCapabilities(glp);
+ caps.setBitmap(true);
+ runTestGL(caps, true /* addLayout */, true /* layered */, false /* useAnim */);
+ }
+
+ static long duration = 500; // ms
+
+ public static void main(String args[]) {
+ for(int i=0; i<args.length; i++) {
+ if(args[i].equals("-time")) {
+ i++;
+ duration = MiscUtils.atol(args[i], duration);
+ } else if(args[i].equals("-width")) {
+ i++;
+ width = MiscUtils.atoi(args[i], width);
+ } else if(args[i].equals("-height")) {
+ i++;
+ height = MiscUtils.atoi(args[i], height);
+ } 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(TestTiledPrintingGearsSwingAWT2.class.getName());
+ }
+}
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/tile/TransparentPanel.java b/src/test/com/jogamp/opengl/test/junit/jogl/tile/TransparentPanel.java
new file mode 100644
index 000000000..d68f878fa
--- /dev/null
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/tile/TransparentPanel.java
@@ -0,0 +1,59 @@
+package com.jogamp.opengl.test.junit.jogl.tile;
+
+import java.awt.*;
+import javax.swing.*;
+import java.lang.reflect.Method;
+
+public class TransparentPanel extends JPanel {
+ public TransparentPanel() {
+ super.setOpaque(false);
+ setMixingCutoutShape(new Rectangle());
+ }
+
+ @Override
+ public void setOpaque(boolean isOpaque) {
+ // Don't let this panel become opaque
+ }
+
+ /**
+ * Helper utility needed to implement TransparentPanel.
+ * This class provides the ability to cut out the background of a lightweight
+ * panel so that it can be layered on top of a heavyweight component and have
+ * the heavyweight component show through. For more infromation, see:
+ *
+ * http://today.java.net/article/2009/11/02/transparent-panel-mixing-heavyweight-and-lightweight-components
+ */
+ private static Method mSetComponentMixing;
+
+ /**
+ * Set the cut out shape on a given Component.
+ *
+ * @param c The Component on which to set the cut out shape.
+ * @param s The shape to cut out of the given Component.
+ */
+ public void setMixingCutoutShape(Shape s)
+ {
+ // Get the cut out shape method
+ if (mSetComponentMixing == null) {
+ try {
+ Class<?> awtUtilitiesClass =
+ Class.forName("com.sun.awt.AWTUtilities");
+ mSetComponentMixing =
+ awtUtilitiesClass.getMethod(
+ "setComponentMixingCutoutShape",
+ Component.class, Shape.class);
+ } catch (Exception ex) {
+ ex.printStackTrace();
+ }
+ }
+
+ // Cut out the shape
+ if (mSetComponentMixing != null) {
+ try {
+ mSetComponentMixing.invoke( null, this, s );
+ } catch (Exception ex) {
+ ex.printStackTrace();
+ }
+ }
+ }
+}