1 /*
2 * Copyright (c) 2015, 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 import java.awt.*;
25 import javax.swing.*;
26 import java.awt.image.BufferedImage;
27 import javax.imageio.ImageIO;
28 import java.io.File;
29 import java.io.IOException;
30
31 /**
32 * @test
33 * @bug 8040689
34 * @summary Tests if antialiasing artifact are shown for font drawn on
35 * translucent destination
36 */
37
38 public class TranslucentAAFont {
39 final private static int width = 40;
40 final private static int height = 40;
41 private static JFrame frame;
42 private static BufferedImage actualBimg, expectedBI;
43
44 public void start() {
45 frame = new JFrame();
46 frame.setUndecorated(true);
47 frame.setBackground(new Color(0, 0, 0, 0));
48 frame.setSize(new Dimension(width, height));
49 frame.setLocationRelativeTo(null);
50 frame.setVisible(true);
51
52 GraphicsEnvironment ge = GraphicsEnvironment
53 .getLocalGraphicsEnvironment();
54 GraphicsConfiguration gc = ge.getDefaultScreenDevice()
55 .getDefaultConfiguration();
56
57 int w = frame.getWidth();
58 int h = frame.getHeight();
59
60 // Actual image
61 // Create translucent bimg
62 BufferedImage actualBI = gc.createCompatibleImage(w, h, Transparency.TRANSLUCENT);
63
64 // Render translucent red into translucent bimg
65 Graphics2D actualg2d = (Graphics2D) actualBI.createGraphics();
66 actualg2d.setColor(new Color(255, 0, 0, 50));
67 actualg2d.fillRect(0, 0, w, h);
68
69 // Render text on translucent bimg
70 actualg2d.setColor(new Color(0,0,0,255));
71 actualg2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
72 Font goldfont = frame.getFont().deriveFont(40f);
73 actualg2d.setFont(goldfont);
74 actualg2d.drawString( " p " , 0, 30);
75
76 // Render translucent bimg into all-white bimg
77 actualBimg = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);
78 Graphics2D bg2d = actualBimg.createGraphics();
79 bg2d.setColor(Color.WHITE);
80 bg2d.fillRect(0, 0, actualBimg.getWidth(), actualBimg.getHeight());
81 bg2d.drawImage(actualBI, 0, 0, null);
82
83
84 // Comparison Expected image
85 // Create opaue bimg
86 expectedBI = gc.createCompatibleImage(w, h, Transparency.OPAQUE);
87
88 Graphics2D tempg2d = (Graphics2D) expectedBI.createGraphics();
89
90 // Fill opaque bimg with white
91 tempg2d.setColor(Color.WHITE);
92 tempg2d.fillRect(0, 0, expectedBI.getWidth(), expectedBI.getHeight());
93
94 // Render translucent red into opaque bimg
95 tempg2d.setColor(new Color(255, 0, 0, 50));
96 tempg2d.fillRect(0, 0, expectedBI.getWidth(), expectedBI.getHeight());
97
98 tempg2d.setColor(new Color(0,0,0,255));
99 tempg2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
100 Font font = frame.getFont().deriveFont(40f);
101 tempg2d.setFont(font);
102 tempg2d.drawString( " p " , 0, 30);
103
104
105
106 }
107
108 public static void main(String[] args) throws Exception {
109 // Create the GUI on the event-dispatching thread
110 SwingUtilities.invokeAndWait(new Runnable() {
111
112 @Override
113 public void run() {
114 TranslucentAAFont gtw = new TranslucentAAFont();
115 gtw.start();
116
117 }
118 });
119 test (expectedBI, actualBimg);
120 frame.dispose();
121 }
122
123 private static void test(final BufferedImage gold, final BufferedImage bi)
124 throws Exception {
125 for (int x = 0; x < width; x++) {
126 for (int y = 0; y < height; y++) {
127 if (gold.getRGB(x, y) != bi.getRGB(x, y)) {
128 ImageIO.write(gold, "png", new File("expected.png"));
129 ImageIO.write(bi, "png", new File("actual.png"));
130 System.out.println("gold.getRGB(" + x + ", " + y + ") = "
131 + Integer.toHexString(gold.getRGB(x, y)) + " != " +
132 "bi.getRGB("+ x + ", " + y + ") = "
133 + Integer.toHexString(bi.getRGB(x, y)));
134 throw new RuntimeException("antialiasing artifacts");
135 }
136 }
137 }
138 }
139 }