jdk/test/java/awt/Graphics/LCDTextAndGraphicsState.java

/*
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 * 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.
 *
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 */

/**
 * @test
 * @bug 6576507
 * @summary Both lines of text should be readable
 * @run main/manual=yesno LCDTextAndGraphicsState
 */
import java.awt.*;
import java.awt.geom.*;

public class LCDTextAndGraphicsState extends Component {

    String text = "This test passes only if this text appears SIX TIMES";

    public void paint(Graphics g) {

        Graphics2D g2d = (Graphics2D)g.create();
        g2d.setColor(Color.white);
        g2d.fillRect(0,0,getSize().width, getSize().height);

        test1(g.create(0,   0, 500, 200));
        test2(g.create(0, 200, 500, 200));
        test3(g.create(0, 400, 500, 200));
    }

    public void test1(Graphics g) {
        Graphics2D g2d = (Graphics2D)g;
        g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
                             RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB);
        g2d.setColor(Color.black);
        g2d.drawString(text, 10, 50);
        g2d.setComposite(AlphaComposite.getInstance(
                         AlphaComposite.SRC_OVER, 0.9f));
        g2d.drawString(text, 10, 80);
    }

    public void test2(Graphics g) {
        Graphics2D g2d = (Graphics2D)g;
        g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
                             RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB);
        g2d.setColor(Color.black);
        g2d.drawString(text, 10, 50);
        g2d.setPaint(new GradientPaint(
                     0f, 0f, Color.BLACK, 100f, 100f, Color.GRAY));
        g2d.drawString(text, 10, 80);
    }

    public void test3(Graphics g) {
        Graphics2D g2d = (Graphics2D)g;
        g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
                             RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB);
        g2d.setColor(Color.black);
        g2d.drawString(text, 10, 50);
        Shape s = new RoundRectangle2D.Double(0, 60, 400, 50, 5, 5);
        g2d.clip(s);
        g2d.drawString(text, 10, 80);
    }

    public Dimension getPreferredSize() {
        return new Dimension(500,600);
    }

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

        Frame f = new Frame("Composite and Text Test");
        f.add(new LCDTextAndGraphicsState(), BorderLayout.CENTER);
        f.pack();
        f.setVisible(true);
    }
}