1 /*
   2  * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /**
  25  * @test
  26  * @bug 6996867
  27  * @summary Render as LCD Text in SrcEa composite mode.
  28  */
  29 
  30 import java.awt.*;
  31 import java.awt.event.*;
  32 import java.awt.image.*;
  33 
  34 public class LCDTextSrcEa extends Component {
  35 
  36     static int SZ=150;
  37     BufferedImage target =
  38         new BufferedImage(SZ, SZ, BufferedImage.TYPE_INT_RGB);
  39 
  40     public static void main(String args[]) {
  41         Frame f = new Frame("LCD Text SrcEa Test");
  42         f.addWindowListener(new WindowAdapter() {
  43             @Override
  44             public void windowClosing(WindowEvent e) {
  45                 System.exit(0);
  46             }
  47         });
  48         LCDTextSrcEa td = new LCDTextSrcEa();
  49         f.add("Center", td);
  50         f.pack();
  51         f.setVisible(true);
  52     }
  53 
  54     public Dimension getPreferredSize() {
  55         return new Dimension(SZ,SZ);
  56     }
  57 
  58     public void paint(Graphics gx) {
  59 
  60         Graphics2D g2d = (Graphics2D) target.getGraphics();
  61         g2d.setColor(Color.white);
  62         g2d.fillRect(0, 0, getWidth(), getHeight());
  63 
  64         g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC, 0.01f));
  65         g2d.setRenderingHint(
  66                 RenderingHints.KEY_TEXT_ANTIALIASING,
  67                 RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_VBGR);
  68         g2d.setRenderingHint(
  69                RenderingHints.KEY_ANTIALIASING,
  70                RenderingHints.VALUE_ANTIALIAS_ON);
  71 
  72         g2d.setColor(Color.black);
  73         g2d.drawString("Some sample text.", 10, 20);
  74         gx.drawImage(target, 0, 0, null);
  75         boolean nongrey = false;
  76         //Test BI: should be some non-greyscale color
  77         for (int px=0;px<SZ;px++) {
  78             for (int py=0;py<SZ;py++) {
  79                 int rgb = target.getRGB(px, py);
  80                 int r = (rgb & 0xff0000) >> 16;
  81                 int g = (rgb & 0x00ff00) >> 8;
  82                 int b = (rgb & 0x0000ff);
  83                 if (r != g || r !=b || g != b) {
  84                      nongrey=true;
  85                      break;
  86                 }
  87             }
  88         }
  89         if (!nongrey) {
  90             throw new RuntimeException("No LCD text found");
  91         }
  92     }
  93 }