| /* |
| * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| import java.awt.AWTException; |
| import java.awt.Canvas; |
| import java.awt.Color; |
| import java.awt.Component; |
| import java.awt.Dimension; |
| import java.awt.Frame; |
| import java.awt.Graphics; |
| import java.awt.Graphics2D; |
| import java.awt.GraphicsConfiguration; |
| import java.awt.GraphicsEnvironment; |
| import java.awt.HeadlessException; |
| import java.awt.Rectangle; |
| import java.awt.Robot; |
| import java.awt.Toolkit; |
| import java.awt.event.WindowAdapter; |
| import java.awt.event.WindowEvent; |
| import java.awt.image.BufferedImage; |
| import java.awt.image.VolatileImage; |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.HashSet; |
| import javax.imageio.ImageIO; |
| import sun.awt.ConstrainableGraphics; |
| |
| /** |
| * @test |
| * @bug 6335200 6419610 |
| * @summary Tests that we don't render anything if specific empty clip is set |
| * @author Dmitri.Trembovetski@Sun.COM: area=Graphics |
| * @modules java.desktop/sun.awt |
| * @run main EmptyClipRenderingTest |
| * @run main/othervm -Dsun.java2d.noddraw=true EmptyClipRenderingTest |
| * @run main/othervm -Dsun.java2d.pmoffscreen=true EmptyClipRenderingTest |
| * @run main/othervm -Dsun.java2d.opengl=true EmptyClipRenderingTest |
| */ |
| public class EmptyClipRenderingTest { |
| static final int IMG_W = 400; |
| static final int IMG_H = 400; |
| |
| // generated rectangles |
| static HashSet<Rectangle> rects; |
| |
| volatile boolean isActivated = false; |
| volatile boolean isPainted; |
| private static boolean showErrors = false; |
| |
| public EmptyClipRenderingTest() { |
| // initialize clip/render region rectangles |
| initClips(); |
| |
| HashSet<RuntimeException> errors = new HashSet<RuntimeException>(); |
| |
| BufferedImage screenResult = testOnscreen(); |
| try { |
| testResult(screenResult, "Screen"); |
| } catch (RuntimeException e) { |
| errors.add(e); |
| } |
| |
| BufferedImage destBI = |
| new BufferedImage(IMG_W, IMG_H, BufferedImage.TYPE_INT_RGB); |
| runTest((Graphics2D)destBI.getGraphics()); |
| try { |
| testResult(destBI, "BufferedImage"); |
| } catch (RuntimeException e) { |
| errors.add(e); |
| } |
| |
| GraphicsConfiguration gc = |
| GraphicsEnvironment.getLocalGraphicsEnvironment(). |
| getDefaultScreenDevice().getDefaultConfiguration(); |
| VolatileImage destVI = gc.createCompatibleVolatileImage(IMG_W, IMG_H); |
| destVI.validate(gc); |
| runTest((Graphics2D)destVI.getGraphics()); |
| try { |
| testResult(destVI.getSnapshot(), "VolatileImage"); |
| } catch (RuntimeException e) { |
| errors.add(e); |
| } |
| |
| if (errors.isEmpty()) { |
| System.err.println("Test PASSED."); |
| } else { |
| for (RuntimeException re : errors) { |
| re.printStackTrace(); |
| } |
| if (showErrors) { |
| System.err.println("Test FAILED: "+ errors.size() + |
| " subtest failures."); |
| } else { |
| throw new RuntimeException("Test FAILED: "+ errors.size() + |
| " subtest failures."); |
| } |
| } |
| } |
| |
| /** |
| * Recursively adds 4 new rectangles: two vertical and two horizontal |
| * based on the passed rectangle area. The area is then shrunk and the |
| * process repeated for smaller area. |
| */ |
| private static void add4Rects(HashSet<Rectangle> rects, Rectangle area) { |
| if (area.width < 10 || area.height < 10) { |
| rects.add(area); |
| return; |
| } |
| // two vertical rects |
| rects.add(new Rectangle(area.x, area.y, 5, area.height)); |
| rects.add(new Rectangle(area.x + area.width - 5, area.y, 5, area.height)); |
| // two horizontal rects |
| int width = area.width - 2*(5 + 1); |
| rects.add(new Rectangle(area.x+6, area.y, width, 5)); |
| rects.add(new Rectangle(area.x+6, area.y + area.height - 5, width, 5)); |
| // reduce the area and repeat |
| area.grow(-6, -6); |
| add4Rects(rects, area); |
| } |
| |
| /** |
| * Generate a bunch of non-intersecting rectangles |
| */ |
| private static void initClips() { |
| rects = new HashSet<Rectangle>(); |
| add4Rects(rects, new Rectangle(0, 0, IMG_W, IMG_H)); |
| System.err.println("Total number of test rects: " + rects.size()); |
| } |
| |
| /** |
| * Render the pattern to the screen, capture the output with robot and |
| * return it. |
| */ |
| private BufferedImage testOnscreen() throws HeadlessException { |
| final Canvas destComponent; |
| final Object lock = new Object(); |
| Frame f = new Frame("Test Frame"); |
| f.setUndecorated(true); |
| f.add(destComponent = new Canvas() { |
| public void paint(Graphics g) { |
| isPainted = true; |
| } |
| public Dimension getPreferredSize() { |
| return new Dimension(IMG_W, IMG_H); |
| } |
| }); |
| f.addWindowListener(new WindowAdapter() { |
| public void windowActivated(WindowEvent e) { |
| if (!isActivated) { |
| synchronized (lock) { |
| isActivated = true; |
| lock.notify(); |
| } |
| } |
| } |
| }); |
| f.pack(); |
| f.setLocationRelativeTo(null); |
| f.setVisible(true); |
| synchronized(lock) { |
| while (!isActivated) { |
| try { |
| lock.wait(100); |
| } catch (InterruptedException ex) { |
| ex.printStackTrace(); |
| } |
| } |
| } |
| Robot r; |
| try { |
| r = new Robot(); |
| } catch (AWTException ex) { |
| throw new RuntimeException("Can't create Robot"); |
| } |
| BufferedImage bi; |
| int attempt = 0; |
| do { |
| if (++attempt > 10) { |
| throw new RuntimeException("Too many attempts: " + attempt); |
| } |
| isPainted = false; |
| runTest((Graphics2D) destComponent.getGraphics()); |
| r.waitForIdle(); |
| Toolkit.getDefaultToolkit().sync(); |
| bi = r.createScreenCapture( |
| new Rectangle(destComponent.getLocationOnScreen().x, |
| destComponent.getLocationOnScreen().y, |
| destComponent.getWidth(), |
| destComponent.getHeight())); |
| } while (isPainted); |
| f.setVisible(false); |
| f.dispose(); |
| return bi; |
| } |
| |
| /** |
| * Run the test: cycle through all the rectangles, use one as clip and |
| * another as the area to render to. |
| * Set the clip in the same way Swing does it when repainting: |
| * first constrain the graphics to the damaged area, and repaint everything |
| */ |
| void runTest(Graphics2D destGraphics) { |
| destGraphics.setColor(Color.black); |
| destGraphics.fillRect(0, 0, IMG_W, IMG_H); |
| |
| destGraphics.setColor(Color.red); |
| for (Rectangle clip : rects) { |
| Graphics2D g2d = (Graphics2D)destGraphics.create(); |
| g2d.setColor(Color.red); |
| // mimic what swing does in BufferStrategyPaintManager |
| if (g2d instanceof ConstrainableGraphics) { |
| ((ConstrainableGraphics)g2d).constrain(clip.x, clip.y, |
| clip.width, clip.height); |
| } |
| g2d.setClip(clip); |
| |
| for (Rectangle renderRegion : rects) { |
| if (renderRegion != clip) { |
| // from CellRendererPane's paintComponent |
| Graphics2D rG = (Graphics2D) |
| g2d.create(renderRegion.x, renderRegion.y, |
| renderRegion.width, renderRegion.height); |
| rG.fillRect(0,0, renderRegion.width, renderRegion.height); |
| } |
| } |
| } |
| } |
| |
| void testResult(final BufferedImage bi, final String desc) { |
| for (int y = 0; y < bi.getHeight(); y++) { |
| for (int x = 0; x < bi.getWidth(); x++) { |
| if (bi.getRGB(x, y) != Color.black.getRGB()) { |
| if (showErrors) { |
| Frame f = new Frame("Error: " + desc); |
| f.add(new Component() { |
| public void paint(Graphics g) { |
| g.drawImage(bi, 0, 0, null); |
| } |
| public Dimension getPreferredSize() { |
| return new Dimension(bi.getWidth(), |
| bi.getHeight()); |
| } |
| }); |
| f.pack(); |
| f.setVisible(true); |
| } |
| try { |
| String fileName = |
| "EmptyClipRenderingTest_"+desc+"_res.png"; |
| System.out.println("Writing resulting image: "+fileName); |
| ImageIO.write(bi, "png", new File(fileName)); |
| } catch (IOException ex) { |
| ex.printStackTrace(); |
| } |
| throw new RuntimeException("Dest: "+desc+ |
| " was rendered to at x="+ |
| x + " y=" + y + |
| " pixel="+Integer.toHexString(bi.getRGB(x,y))); |
| } |
| } |
| } |
| } |
| |
| public static void main(String argv[]) { |
| for (String arg : argv) { |
| if (arg.equals("-show")) { |
| showErrors = true; |
| } else { |
| usage("Incorrect argument:" + arg); |
| } |
| } |
| new EmptyClipRenderingTest(); |
| } |
| |
| private static void usage(String string) { |
| System.out.println(string); |
| System.out.println("Usage: EmptyClipRenderingTest [-show]"); |
| } |
| } |