/* * 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.BasicStroke; import java.awt.BorderLayout; import java.awt.Color; import java.awt.Dimension; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.GraphicsConfiguration; import java.awt.GraphicsDevice; import java.awt.GraphicsEnvironment; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import java.awt.Image; import java.awt.Rectangle; import java.awt.Robot; 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.BufferedImage; import java.awt.image.MultiResolutionImage; 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 8173972 * @summary createScreenCapture not working as expected on multimonitor setup * with different DPI scales. * @run main/manual/othervm RobotMultiDPIScreenTest */ public class RobotMultiDPIScreenTest { private static volatile boolean testResult = false; private static volatile CountDownLatch countDownLatch; private static JFrame mainFrame; private static Rectangle maxBounds; private static Rectangle[] screenBounds; private static double[][] scales; private static final String INSTRUCTIONS = "INSTRUCTIONS:\n" + "Verify that screenshots are properly taken from monitors" + " with different DPI.\n" + "\n" + "The test is applicable for a multi-monitor system where displays" + " are configured to have different DPI\n" + "\n" + "1. Press Take Screenshots button\n" + "Check that screenshots shown on the panel are properly taken.\n"; public static void main(String args[]) throws Exception { countDownLatch = new CountDownLatch(1); SwingUtilities.invokeLater(RobotMultiDPIScreenTest::createUI); countDownLatch.await(15, TimeUnit.MINUTES); if (!testResult) { throw new RuntimeException("Test fails!"); } } private static void createUI() { initScreenBounds(); 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 BorderLayout()); final BufferedImage screensImage = getScreenImages(); final JPanel screensPanel = new JPanel() { @Override public void paint(Graphics g) { super.paint(g); g.drawImage(screensImage, 0, 0, getWidth(), getHeight(), this); } }; screensPanel.setPreferredSize(new Dimension(400, 200)); JButton frameButton = new JButton("Take Screenshots"); frameButton.addActionListener((e) -> { try { Robot robot = new Robot(); Graphics2D g = screensImage.createGraphics(); g.translate(-maxBounds.x, -maxBounds.y); for (Rectangle rect : screenBounds) { MultiResolutionImage mrImage = robot.createMultiResolutionScreenCapture(rect); List resolutionVariants = mrImage.getResolutionVariants(); Image rvImage = resolutionVariants.get(resolutionVariants.size() - 1); g.drawImage(rvImage, rect.x, rect.y, rect.width, rect.height, null); } g.dispose(); screensPanel.repaint(); } catch (Exception ex) { throw new RuntimeException(ex); } }); testPanel.add(screensPanel, BorderLayout.CENTER); testPanel.add(frameButton, BorderLayout.SOUTH); 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 (mainFrame != null && mainFrame.isVisible()) { mainFrame.dispose(); } } static void initScreenBounds() { GraphicsDevice[] devices = GraphicsEnvironment .getLocalGraphicsEnvironment() .getScreenDevices(); screenBounds = new Rectangle[devices.length]; scales = new double[devices.length][2]; for (int i = 0; i < devices.length; i++) { GraphicsConfiguration gc = devices[i].getDefaultConfiguration(); screenBounds[i] = gc.getBounds(); AffineTransform tx = gc.getDefaultTransform(); scales[i][0] = tx.getScaleX(); scales[i][1] = tx.getScaleY(); } maxBounds = screenBounds[0]; for (int i = 0; i < screenBounds.length; i++) { maxBounds = maxBounds.union(screenBounds[i]); } } private static Rectangle getCenterRect(Rectangle rect) { int w = rect.width / 2; int h = rect.height / 2; int x = rect.x + w / 2; int y = rect.y + h / 2; return new Rectangle(x, y, w, h); } static BufferedImage getScreenImages() { final BufferedImage img = new BufferedImage(maxBounds.width, maxBounds.height, BufferedImage.TYPE_INT_RGB); Graphics2D g = img.createGraphics(); g.setColor(Color.WHITE); g.fillRect(0, 0, maxBounds.width, maxBounds.height); g.translate(-maxBounds.x, -maxBounds.y); g.setStroke(new BasicStroke(8f)); for (int i = 0; i < screenBounds.length; i++) { Rectangle r = screenBounds[i]; g.setColor(Color.BLACK); g.drawRect(r.x, r.y, r.width, r.height); g.setColor(Color.ORANGE); Rectangle cr = getCenterRect(r); g.fillRect(cr.x, cr.y, cr.width, cr.height); double scaleX = scales[i][0]; double scaleY = scales[i][1]; float fontSize = maxBounds.height / 7; g.setFont(g.getFont().deriveFont(fontSize)); g.setColor(Color.BLUE); g.drawString(String.format("Scale: [%2.1f, %2.1f]", scaleX, scaleY), r.x + r.width / 8, r.y + r.height / 2); } g.dispose(); return img; } }