1 /*
2  * Copyright (c) 2010, 2011, 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  *
26  * @bug 6925760
27  * @summary Scaled graphics causes overlapped LCD glyphs on Windows
28  */
29 
30 import java.awt.*;
31 import java.awt.font.*;
32 import java.awt.geom.*;
33 
34 public class LCDScale extends Component {
35 
main(String args[])36     public static void main(String args[]) {
37         Frame f = new Frame("TL TEST");
38         LCDScale td = new LCDScale();
39         f.add("Center", td);
40         f.pack(); f.setVisible(true);
41     }
42 
43 
LCDScale()44     public LCDScale() {
45         super();
46     }
47 
getPreferredSize()48     public Dimension getPreferredSize() {
49         return new Dimension(500,500);
50     }
51 
paint(Graphics g)52     public void paint(Graphics g) {
53         Graphics2D g2d = (Graphics2D)g;
54         g2d.setRenderingHint(
55                  RenderingHints.KEY_TEXT_ANTIALIASING,
56                  RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB);
57 
58         Font f = new Font("Dialog", Font.PLAIN, 40);
59         g.setFont(f);
60         FontRenderContext frc = g2d.getFontRenderContext();
61         GlyphVector gv = f.createGlyphVector(frc, "Help");
62         g2d.drawGlyphVector(gv, 10f, 50f);
63         Rectangle2D bds1 = gv.getLogicalBounds();
64 
65         f = new Font("Arial", Font.PLAIN, 25);
66         g.setFont(f);
67         double s = 2.0;
68         AffineTransform tx = AffineTransform.getScaleInstance(s,s);
69         g2d.transform(tx);
70         frc = g2d.getFontRenderContext();
71         gv = f.createGlyphVector(frc, "Help");
72         g2d.drawGlyphVector(gv, 10f, 100f);
73         Rectangle2D bds2 = gv.getLogicalBounds();
74 
75         System.out.println(bds1);
76         System.out.println(bds2);
77         if (bds2.getWidth()*s < bds1.getWidth()) {
78             throw new RuntimeException("Bounds too small");
79         }
80     }
81 }
82