jdk/test/java/awt/Window/WindowResizingOnDPIChanging/WindowResizingOnDPIChangingTest.java - platform/libcore - Git at Google

 /*
  * Copyright (c) 2017, 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.Color;
 import java.awt.FlowLayout;
 import java.awt.Font;
 import java.awt.Frame;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.GridBagConstraints;
 import java.awt.GridBagLayout;
 import java.awt.HeadlessException;
 import java.awt.Image;
 import java.awt.Insets;
 import java.awt.Panel;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.awt.event.WindowAdapter;
 import java.awt.event.WindowEvent;
 import java.awt.geom.AffineTransform;
 import java.awt.image.AbstractMultiResolutionImage;
 import java.awt.image.BufferedImage;
 import java.awt.image.ImageObserver;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 import javax.swing.JButton;
 import javax.swing.JFrame;
 import javax.swing.JPanel;
 import javax.swing.JTextArea;
 import javax.swing.SwingUtilities;

 /* @test
  * @bug 8147440 8147016
  * @summary HiDPI (Windows): Swing components have incorrect sizes after
  *          changing display resolution
  * @run main/manual/othervm WindowResizingOnDPIChangingTest
  */
 public class WindowResizingOnDPIChangingTest {

     private static volatile boolean testResult = false;
     private static volatile CountDownLatch countDownLatch;
     private static TestFrame undecoratedFrame;
     private static TestFrame decoratedFrame;
     private static JFrame mainFrame;

     private static final String INSTRUCTIONS = "INSTRUCTIONS:\n"
             + "Verify that window is properly resized after the display DPI updating.\n"
             + "\n"
             + "The test is applicable for OSes that allows to change the display DPI\n"
             + "without the system rebooting (like Windows 8.1 and higher). Press PASS for other\n"
             + "systems. \n"
             + "\n"
             + "1. Set the display DPI size to 192 (DPI scale factor 200%)\n"
             + "2. Press Show Frames button\n"
             + "Two frames decorated and undecorated appear.\n"
             + "3. Check that the string \"scale 2x\" is painted on the windows.\n"
             + "4. Set the display DPI size to 96 (DPI scale factor 100%)\n"
             + "5. Check that the string \"scale: 1x\" is painted on the windows.\n"
             + "6. Check that the windows are properly resized in the same way as native applications\n"
             + "7. Check that the windows are properly repainted and do not contain drawing artifacts\n"
             + "If so, press PASS, else press FAIL.\n";

     public static void main(String args[]) throws Exception {

         countDownLatch = new CountDownLatch(1);
         SwingUtilities.invokeLater(WindowResizingOnDPIChangingTest::createUI);
         countDownLatch.await(15, TimeUnit.MINUTES);
         if (!testResult) {
             throw new RuntimeException("Test fails!");
         }
     }

     private static void createUI() {

         mainFrame = new JFrame("DPI change test");
         GridBagLayout layout = new GridBagLayout();
         JPanel mainControlPanel = new JPanel(layout);
         JPanel resultButtonPanel = new JPanel(layout);

         GridBagConstraints gbc = new GridBagConstraints();

         JPanel testPanel = new JPanel(new FlowLayout());
         JButton frameButton = new JButton("Show Frames");
         frameButton.addActionListener((e) -> {
             int x = 20;
             int y = 10;
             int w = 400;
             int h = 300;

             undecoratedFrame = new TestFrame(w, h, true);
             undecoratedFrame.setLocation(x, y);
             undecoratedFrame.setVisible(true);

             decoratedFrame = new TestFrame(w, h, false);
             decoratedFrame.setLocation(x + w + 10, y);
             decoratedFrame.setVisible(true);

         });
         testPanel.add(frameButton);

         gbc.gridx = 0;
         gbc.gridy = 0;
         gbc.fill = GridBagConstraints.HORIZONTAL;
         mainControlPanel.add(testPanel, gbc);

         JTextArea instructionTextArea = new JTextArea();
         instructionTextArea.setText(INSTRUCTIONS);
         instructionTextArea.setEditable(false);
         instructionTextArea.setBackground(Color.white);

         gbc.gridx = 0;
         gbc.gridy = 1;
         gbc.fill = GridBagConstraints.HORIZONTAL;
         mainControlPanel.add(instructionTextArea, gbc);

         JButton passButton = new JButton("Pass");
         passButton.setActionCommand("Pass");
         passButton.addActionListener((ActionEvent e) -> {
             testResult = true;
             disposeFrames();
             countDownLatch.countDown();

         });

         JButton failButton = new JButton("Fail");
         failButton.setActionCommand("Fail");
         failButton.addActionListener(new ActionListener() {
             @Override
             public void actionPerformed(ActionEvent e) {
                 disposeFrames();
                 countDownLatch.countDown();
             }
         });

         gbc.gridx = 0;
         gbc.gridy = 0;
         resultButtonPanel.add(passButton, gbc);

         gbc.gridx = 1;
         gbc.gridy = 0;
         resultButtonPanel.add(failButton, gbc);

         gbc.gridx = 0;
         gbc.gridy = 2;
         mainControlPanel.add(resultButtonPanel, gbc);

         mainFrame.add(mainControlPanel);
         mainFrame.pack();

         mainFrame.addWindowListener(new WindowAdapter() {

             @Override
             public void windowClosing(WindowEvent e) {
                 disposeFrames();
                 countDownLatch.countDown();
             }
         });
         mainFrame.setVisible(true);
     }

     private static void disposeFrames() {
         if (decoratedFrame != null && decoratedFrame.isVisible()) {
             decoratedFrame.dispose();
         }
         if (undecoratedFrame != null && undecoratedFrame.isVisible()) {
             undecoratedFrame.dispose();
         }
         if (mainFrame != null && mainFrame.isVisible()) {
             mainFrame.dispose();
         }
     }

     static class TestFrame extends Frame {

         private final TestMultiResolutionImage mrImage;

         public TestFrame(int width, int height, boolean undecorated) throws HeadlessException {
             super("Test Frame. Undecorated: " + undecorated);
             setSize(width, height);
             mrImage = new TestMultiResolutionImage(width, height);

             setUndecorated(undecorated);
             Panel panel = new Panel(new FlowLayout()) {
                 @Override
                 public void paint(Graphics g) {
                     super.paint(g);
                     AffineTransform tx = ((Graphics2D) g).getTransform();
                     mrImage.scaleX = tx.getScaleX();
                     mrImage.scaleY = tx.getScaleY();
                     Insets insets = getInsets();
                     g.drawImage(mrImage, insets.left, insets.bottom, null);
                 }
             };
             add(panel);
         }
     }

     static class TestMultiResolutionImage extends AbstractMultiResolutionImage {

         final int width;
         final int height;
         double scaleX;
         double scaleY;

         public TestMultiResolutionImage(int width, int height) {
             this.width = width;
             this.height = height;
         }

         @Override
         public int getWidth(ImageObserver observer) {
             return width;
         }

         @Override
         public int getHeight(ImageObserver observer) {
             return height;
         }

         @Override
         protected Image getBaseImage() {
             return getResolutionVariant(width, height);
         }

         @Override
         public Image getResolutionVariant(double destImageWidth, double destImageHeight) {

             int w = (int) destImageWidth;
             int h = (int) destImageHeight;

             BufferedImage img = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
             Graphics2D g = img.createGraphics();
             g.scale(scaleX, scaleY);
             int red = (int) (255 / scaleX);
             int green = (int) (250 / scaleX);
             int blue = (int) (20 / scaleX);
             g.setColor(new Color(red, green, blue));
             g.fillRect(0, 0, width, height);

             g.setColor(Color.decode("#87CEFA"));
             Font f = g.getFont();
             g.setFont(new Font(f.getName(), Font.BOLD, 24));
             g.drawString(String.format("scales: [%1.2fx, %1.2fx]", scaleX, scaleY),
                     width / 6, height / 2);

             g.dispose();
             return img;
         }

         @Override
         public List<Image> getResolutionVariants() {
             return Collections.unmodifiableList(Arrays.asList(getBaseImage()));
         }
     }
 }
	/*
	* Copyright (c) 2017, 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.Color;
	import java.awt.FlowLayout;
	import java.awt.Font;
	import java.awt.Frame;
	import java.awt.Graphics;
	import java.awt.Graphics2D;
	import java.awt.GridBagConstraints;
	import java.awt.GridBagLayout;
	import java.awt.HeadlessException;
	import java.awt.Image;
	import java.awt.Insets;
	import java.awt.Panel;
	import java.awt.event.ActionEvent;
	import java.awt.event.ActionListener;
	import java.awt.event.WindowAdapter;
	import java.awt.event.WindowEvent;
	import java.awt.geom.AffineTransform;
	import java.awt.image.AbstractMultiResolutionImage;
	import java.awt.image.BufferedImage;
	import java.awt.image.ImageObserver;
	import java.util.Arrays;
	import java.util.Collections;
	import java.util.List;
	import java.util.concurrent.CountDownLatch;
	import java.util.concurrent.TimeUnit;
	import javax.swing.JButton;
	import javax.swing.JFrame;
	import javax.swing.JPanel;
	import javax.swing.JTextArea;
	import javax.swing.SwingUtilities;

	/* @test
	* @bug 8147440 8147016
	* @summary HiDPI (Windows): Swing components have incorrect sizes after
	* changing display resolution
	* @run main/manual/othervm WindowResizingOnDPIChangingTest
	*/
	public class WindowResizingOnDPIChangingTest {

	private static volatile boolean testResult = false;
	private static volatile CountDownLatch countDownLatch;
	private static TestFrame undecoratedFrame;
	private static TestFrame decoratedFrame;
	private static JFrame mainFrame;

	private static final String INSTRUCTIONS = "INSTRUCTIONS:\n"
	+ "Verify that window is properly resized after the display DPI updating.\n"
	+ "\n"
	+ "The test is applicable for OSes that allows to change the display DPI\n"
	+ "without the system rebooting (like Windows 8.1 and higher). Press PASS for other\n"
	+ "systems. \n"
	+ "\n"
	+ "1. Set the display DPI size to 192 (DPI scale factor 200%)\n"
	+ "2. Press Show Frames button\n"
	+ "Two frames decorated and undecorated appear.\n"
	+ "3. Check that the string \"scale 2x\" is painted on the windows.\n"
	+ "4. Set the display DPI size to 96 (DPI scale factor 100%)\n"
	+ "5. Check that the string \"scale: 1x\" is painted on the windows.\n"
	+ "6. Check that the windows are properly resized in the same way as native applications\n"
	+ "7. Check that the windows are properly repainted and do not contain drawing artifacts\n"
	+ "If so, press PASS, else press FAIL.\n";

	public static void main(String args[]) throws Exception {

	countDownLatch = new CountDownLatch(1);
	SwingUtilities.invokeLater(WindowResizingOnDPIChangingTest::createUI);
	countDownLatch.await(15, TimeUnit.MINUTES);
	if (!testResult) {
	throw new RuntimeException("Test fails!");
	}
	}

	private static void createUI() {

	mainFrame = new JFrame("DPI change test");
	GridBagLayout layout = new GridBagLayout();
	JPanel mainControlPanel = new JPanel(layout);
	JPanel resultButtonPanel = new JPanel(layout);

	GridBagConstraints gbc = new GridBagConstraints();

	JPanel testPanel = new JPanel(new FlowLayout());
	JButton frameButton = new JButton("Show Frames");
	frameButton.addActionListener((e) -> {
	int x = 20;
	int y = 10;
	int w = 400;
	int h = 300;

	undecoratedFrame = new TestFrame(w, h, true);
	undecoratedFrame.setLocation(x, y);
	undecoratedFrame.setVisible(true);

	decoratedFrame = new TestFrame(w, h, false);
	decoratedFrame.setLocation(x + w + 10, y);
	decoratedFrame.setVisible(true);

	});
	testPanel.add(frameButton);

	gbc.gridx = 0;
	gbc.gridy = 0;
	gbc.fill = GridBagConstraints.HORIZONTAL;
	mainControlPanel.add(testPanel, gbc);

	JTextArea instructionTextArea = new JTextArea();
	instructionTextArea.setText(INSTRUCTIONS);
	instructionTextArea.setEditable(false);
	instructionTextArea.setBackground(Color.white);

	gbc.gridx = 0;
	gbc.gridy = 1;
	gbc.fill = GridBagConstraints.HORIZONTAL;
	mainControlPanel.add(instructionTextArea, gbc);

	JButton passButton = new JButton("Pass");
	passButton.setActionCommand("Pass");
	passButton.addActionListener((ActionEvent e) -> {
	testResult = true;
	disposeFrames();
	countDownLatch.countDown();

	});

	JButton failButton = new JButton("Fail");
	failButton.setActionCommand("Fail");
	failButton.addActionListener(new ActionListener() {
	@Override
	public void actionPerformed(ActionEvent e) {
	disposeFrames();
	countDownLatch.countDown();
	}
	});

	gbc.gridx = 0;
	gbc.gridy = 0;
	resultButtonPanel.add(passButton, gbc);

	gbc.gridx = 1;
	gbc.gridy = 0;
	resultButtonPanel.add(failButton, gbc);

	gbc.gridx = 0;
	gbc.gridy = 2;
	mainControlPanel.add(resultButtonPanel, gbc);

	mainFrame.add(mainControlPanel);
	mainFrame.pack();

	mainFrame.addWindowListener(new WindowAdapter() {

	@Override
	public void windowClosing(WindowEvent e) {
	disposeFrames();
	countDownLatch.countDown();
	}
	});
	mainFrame.setVisible(true);
	}

	private static void disposeFrames() {
	if (decoratedFrame != null && decoratedFrame.isVisible()) {
	decoratedFrame.dispose();
	}
	if (undecoratedFrame != null && undecoratedFrame.isVisible()) {
	undecoratedFrame.dispose();
	}
	if (mainFrame != null && mainFrame.isVisible()) {
	mainFrame.dispose();
	}
	}

	static class TestFrame extends Frame {

	private final TestMultiResolutionImage mrImage;

	public TestFrame(int width, int height, boolean undecorated) throws HeadlessException {
	super("Test Frame. Undecorated: " + undecorated);
	setSize(width, height);
	mrImage = new TestMultiResolutionImage(width, height);

	setUndecorated(undecorated);
	Panel panel = new Panel(new FlowLayout()) {
	@Override
	public void paint(Graphics g) {
	super.paint(g);
	AffineTransform tx = ((Graphics2D) g).getTransform();
	mrImage.scaleX = tx.getScaleX();
	mrImage.scaleY = tx.getScaleY();
	Insets insets = getInsets();
	g.drawImage(mrImage, insets.left, insets.bottom, null);
	}
	};
	add(panel);
	}
	}

	static class TestMultiResolutionImage extends AbstractMultiResolutionImage {

	final int width;
	final int height;
	double scaleX;
	double scaleY;

	public TestMultiResolutionImage(int width, int height) {
	this.width = width;
	this.height = height;
	}

	@Override
	public int getWidth(ImageObserver observer) {
	return width;
	}

	@Override
	public int getHeight(ImageObserver observer) {
	return height;
	}

	@Override
	protected Image getBaseImage() {
	return getResolutionVariant(width, height);
	}

	@Override
	public Image getResolutionVariant(double destImageWidth, double destImageHeight) {

	int w = (int) destImageWidth;
	int h = (int) destImageHeight;

	BufferedImage img = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
	Graphics2D g = img.createGraphics();
	g.scale(scaleX, scaleY);
	int red = (int) (255 / scaleX);
	int green = (int) (250 / scaleX);
	int blue = (int) (20 / scaleX);
	g.setColor(new Color(red, green, blue));
	g.fillRect(0, 0, width, height);

	g.setColor(Color.decode("#87CEFA"));
	Font f = g.getFont();
	g.setFont(new Font(f.getName(), Font.BOLD, 24));
	g.drawString(String.format("scales: [%1.2fx, %1.2fx]", scaleX, scaleY),
	width / 6, height / 2);

	g.dispose();
	return img;
	}

	@Override
	public List<Image> getResolutionVariants() {
	return Collections.unmodifiableList(Arrays.asList(getBaseImage()));
	}
	}
	}