Java example source code file (NonOpaqueDestLCDAATest.java)

This example Java source code file (NonOpaqueDestLCDAATest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

awt, color, countdownlatch, event, failed, file, graphics2d, gui, image, imageio, jbutton, jpanel, jtextarea, nonopaquedestlcdaatest, override, passed, string, swing, translucent, volatileimage

The NonOpaqueDestLCDAATest.java Java example source code

/*
 * Copyright (c) 2008, 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.
 */

/*
 * @test
 * @bug 6728834 6749060
 * @summary Tests that LCD AA text rendering works properly with destinations
 * being VolatileImage of all transparency types
 * @author Dmitri.Trembovetski: area=Graphics
 * @run main/manual/othervm -Dsun.java2d.d3d=false NonOpaqueDestLCDAATest
 * @run main/manual/othervm NonOpaqueDestLCDAATest
 * @run main/manual/othervm -Dsun.java2d.opengl=True NonOpaqueDestLCDAATest
 */

import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GraphicsConfiguration;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
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.util.concurrent.CountDownLatch;
import javax.imageio.ImageIO;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import static java.awt.Transparency.*;

public class NonOpaqueDestLCDAATest extends JFrame implements ActionListener {
    private static volatile boolean passed = true;
    private static CountDownLatch complete = new CountDownLatch(1);

    public NonOpaqueDestLCDAATest() {
        JTextArea desc = new JTextArea();
        desc.setText(
            "\n  Instructions: the three text strings below should appear" +
            "  readable, without smudges or misshapen bold glyphs.\n" +
            "  You may need a magnifier to notice some bad colorfringing in "+
            "  in SW Translucent case, especially in vertical stems.\n\n"+
            "  Basically text rendered to TRANSLUCENT destination should look"+
            "  similar to one rendered to OPAQUE - it may differ in whether or" +
            "  not it's LCD, but it should look 'correct'\n\n"+
            "If the text looks fine the test PASSED otherwise it FAILED.\n");
        desc.setEditable(false);
        desc.setBackground(Color.black);
        desc.setForeground(Color.green);
        add("North", desc);
        JPanel renderPanel = new JPanel() {
            @Override
            public void paintComponent(Graphics g) {
                render(g, getWidth(), getHeight());
            }
        };
        renderPanel.setPreferredSize(new Dimension(1024, 650));
        renderPanel.addComponentListener(new ComponentAdapter() {
            @Override
            public void componentResized(ComponentEvent e) {
                images = null;
            }
        });
        add("Center", renderPanel);

        JButton passedBtn = new JButton("Passed");
        JButton failedBtn = new JButton("Failed");
        passedBtn.addActionListener(this);
        failedBtn.addActionListener(this);
        JPanel p = new JPanel();
        p.add(passedBtn);
        p.add(failedBtn);
        add("South", p);
        addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                complete.countDown();
            }
        });
        setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
    }

    public void render(Graphics g, int w, int h) {
        initImages(w, h);

        g.setColor(new Color(0xAD, 0xD8, 0xE6));
        g.fillRect(0, 0, w, h);

        Graphics2D g2d = (Graphics2D) g.create();
        for (Image im : images) {
            g2d.drawImage(im, 0, 0, null);
            g2d.translate(0, im.getHeight(null));
        }
    }

    String tr[] = { "OPAQUE", "BITMASK", "TRANSLUCENT" };
    @Override
    public void actionPerformed(ActionEvent e) {
        if (e.getActionCommand().equals("Passed")) {
            passed = true;
            System.out.println("Test Passed");
        } else if (e.getActionCommand().equals("Failed")) {
            System.out.println("Test Failed");
            for (int i = 0; i < images.length; i++) {
                String f = "NonOpaqueDestLCDAATest_"+tr[i];
                try {
                    if (images[i] instanceof VolatileImage) {
                        f += "_vi.png";
                        ImageIO.write(((VolatileImage)images[i]).
                                getSnapshot(), "png", new File(f));
                    } else {
                        f += "_bi.png";
                        ImageIO.write((BufferedImage)images[i],
                                       "png", new File(f));
                    }
                    System.out.printf("Dumped %s image to %s\n", tr[i], f);
                } catch (Throwable t) {}
            }
            passed = false;
        }
        dispose();
        complete.countDown();
    }

    static void clear(Graphics2D  g, int type, int w, int h) {
        Graphics2D gg = (Graphics2D) g.create();
        if (type > OPAQUE) {
            gg.setColor(new Color(0, 0, 0, 0));
            gg.setComposite(AlphaComposite.Src);
        } else {
            gg.setColor(new Color(0xAD, 0xD8, 0xE6));
        }
        gg.fillRect(0, 0, w, h);
    }

    private void render(Image im, int type, String s) {
        Graphics2D g2d = (Graphics2D) im.getGraphics();
        clear(g2d, type, im.getWidth(null), im.getHeight(null));
        g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
                RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB);
        Font f = new Font("Dialog", Font.BOLD, 40);// g2d.getFont().deriveFont(32.0f);
        g2d.setColor(Color.white);
        g2d.setFont(g2d.getFont().deriveFont(36.0f));
        g2d.drawString(s, 10, im.getHeight(null) / 2);
    }

    Image images[];
    private void initImages(int w, int h) {
        if (images == null) {
            images = new Image[6];
            GraphicsConfiguration gc = getGraphicsConfiguration();
            for (int i = OPAQUE; i <= TRANSLUCENT; i++) {
                VolatileImage vi =
                    gc.createCompatibleVolatileImage(w,h/images.length,i);
                images[i-1] = vi;
                vi.validate(gc);
                String s = "LCD AA Text rendered to " + tr[i - 1] + " HW destination";
                render(vi, i, s);

                s = "LCD AA Text rendered to " + tr[i - 1] + " SW destination";
                images[i-1+3] = gc.createCompatibleImage(w, h/images.length, i);
                render(images[i-1+3], i, s);
            }
        }
    }

    public static void main(String[] args) throws InterruptedException {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                NonOpaqueDestLCDAATest t = new NonOpaqueDestLCDAATest();
                t.pack();
                t.setVisible(true);
            }
        });

        complete.await();
        if (!passed) {
            throw new RuntimeException("Test Failed!");
        }
    }
}