1 /*
   2  * Copyright (c) 2010, 2016, 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  * @key headful
  27  * @bug 6996867
  28  * @summary Render as LCD Text in SrcEa composite mode.
  29  */
  30 
  31 import java.awt.*;
  32 import java.awt.event.*;
  33 import java.awt.image.*;
  34 
  35 public class LCDTextSrcEa extends Component {
  36 
  37     static int SZ=150;
  38     BufferedImage target =
  39         new BufferedImage(SZ, SZ, BufferedImage.TYPE_INT_RGB);
  40 
  41     public static void main(String args[]) {
  42         Frame f = new Frame("LCD Text SrcEa Test");
  43         f.addWindowListener(new WindowAdapter() {
  44             @Override
  45             public void windowClosing(WindowEvent e) {
  46                 System.exit(0);
  47             }
  48         });
  49         LCDTextSrcEa td = new LCDTextSrcEa();
  50         f.add("Center", td);
  51         f.pack();
  52         f.setVisible(true);
  53     }
  54 
  55     public Dimension getPreferredSize() {
  56         return new Dimension(SZ,SZ);
  57     }
  58 
  59     public void paint(Graphics gx) {
  60 
  61         Graphics2D g2d = (Graphics2D) target.getGraphics();
  62         g2d.setColor(Color.white);
  63         g2d.fillRect(0, 0, getWidth(), getHeight());
  64 
  65         g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC, 0.01f));
  66         g2d.setRenderingHint(
  67                 RenderingHints.KEY_TEXT_ANTIALIASING,
  68                 RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_VBGR);
  69         g2d.setRenderingHint(
  70                RenderingHints.KEY_ANTIALIASING,
  71                RenderingHints.VALUE_ANTIALIAS_ON);
  72 
  73         g2d.setColor(Color.black);
  74         g2d.drawString("Some sample text.", 10, 20);
  75         gx.drawImage(target, 0, 0, null);
  76         boolean nongrey = false;
  77         //Test BI: should be some non-greyscale color
  78         for (int px=0;px<SZ;px++) {
  79             for (int py=0;py<SZ;py++) {
  80                 int rgb = target.getRGB(px, py);
  81                 int r = (rgb & 0xff0000) >> 16;
  82                 int g = (rgb & 0x00ff00) >> 8;
  83                 int b = (rgb & 0x0000ff);
  84                 if (r != g || r !=b || g != b) {
  85                      nongrey=true;
  86                      break;
  87                 }
  88             }
  89         }
  90         if (!nongrey) {
  91             throw new RuntimeException("No LCD text found");
  92         }
  93     }
  94 }