russell@unturf.com
0a580b313d
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
115 lines
5.2 KiB
Java
115 lines
5.2 KiB
Java
/*
|
|
* Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
|
|
* 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.
|
|
*
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*/
|
|
|
|
/**
|
|
* @test
|
|
* @bug 8361381
|
|
* @summary GlyphLayout behavior differs on JDK 11+ compared to JDK 8
|
|
*/
|
|
|
|
import java.awt.*;
|
|
import java.awt.font.FontRenderContext;
|
|
import java.awt.font.LineBreakMeasurer;
|
|
import java.awt.font.TextAttribute;
|
|
import java.text.AttributedCharacterIterator;
|
|
import java.text.AttributedString;
|
|
import java.text.BreakIterator;
|
|
import java.util.Locale;
|
|
|
|
public class KhmerLineBreakTest {
|
|
static String khmer = "បានស្នើសុំនៅតែត្រូវបានបដិសេធ";
|
|
/*
|
|
|
|
This is part of the output we get from `ExtendedTextSourceLabel::createCharinfo()`
|
|
when running with `-Dsun.java2d.debugfonts=true`. It's a listing of the 28 code points
|
|
of the `khmer` string defined above and displays their x-position during rendering as
|
|
well as their advance. Code points with zero advance belong to the glyph cluster which
|
|
is started by the first preceding code point with a non-zero advance. There should be no
|
|
breaks at characters with zero advance, because this would break a glyph cluster.
|
|
|
|
0 ch: 1794 x: 0.0 xa: 68.115234
|
|
1 ch: 17b6 x: 68.115234 xa: 0.0
|
|
2 ch: 1793 x: 68.115234 xa: 45.410156
|
|
3 ch: 179f x: 113.52539 xa: 90.82031
|
|
4 ch: 17d2 x: 204.3457 xa: 0.0
|
|
5 ch: 1793 x: 204.3457 xa: 0.0
|
|
6 ch: 17be x: 204.3457 xa: 0.0
|
|
7 ch: 179f x: 204.3457 xa: 68.115234
|
|
8 ch: 17bb x: 272.46094 xa: 0.0
|
|
9 ch: 17c6 x: 272.46094 xa: 0.0
|
|
10 ch: 1793 x: 272.46094 xa: 90.82031
|
|
11 ch: 17c5 x: 363.28125 xa: 0.0
|
|
12 ch: 178f x: 363.28125 xa: 68.115234
|
|
13 ch: 17c2 x: 431.39648 xa: 0.0
|
|
14 ch: 178f x: 431.39648 xa: 68.115234
|
|
15 ch: 17d2 x: 499.51172 xa: 0.0
|
|
16 ch: 179a x: 499.51172 xa: 0.0
|
|
17 ch: 17bc x: 499.51172 xa: 0.0
|
|
18 ch: 179c x: 499.51172 xa: 22.705078
|
|
19 ch: 1794 x: 522.2168 xa: 68.115234
|
|
20 ch: 17b6 x: 590.33203 xa: 0.0
|
|
21 ch: 1793 x: 590.33203 xa: 45.410156
|
|
22 ch: 1794 x: 635.7422 xa: 45.410156
|
|
23 ch: 178a x: 681.15234 xa: 45.410156
|
|
24 ch: 17b7 x: 726.5625 xa: 0.0
|
|
25 ch: 179f x: 726.5625 xa: 90.82031
|
|
26 ch: 17c1 x: 817.3828 xa: 0.0
|
|
27 ch: 1792 x: 817.3828 xa: 45.410156
|
|
|
|
*/
|
|
static boolean[] possibleBreak = new boolean[]
|
|
{ true, false, true, true, false, false, false, true, false, false,
|
|
true, false, true, false, true, false, false, false, true, true,
|
|
false, true, true, true, false, true, false, true, true /* */ };
|
|
static Locale locale = new Locale.Builder().setLanguage("km").setRegion("KH").build();
|
|
static BreakIterator breakIterator = BreakIterator.getLineInstance(locale);
|
|
static FontRenderContext frc = new FontRenderContext(null, true, true);
|
|
|
|
public static void main(String[] args) {
|
|
Font[] allFonts = GraphicsEnvironment.getLocalGraphicsEnvironment().getAllFonts();
|
|
for (int i=0; i < allFonts.length; i++) {
|
|
if (allFonts[i].canDisplayUpTo(khmer) == -1) {
|
|
Font font = allFonts[i].deriveFont(Font.PLAIN, 60f);
|
|
System.out.println("Trying font: " + font.getFontName());
|
|
AttributedString attrStr = new AttributedString(khmer);
|
|
attrStr.addAttribute(TextAttribute.FONT, font);
|
|
AttributedCharacterIterator it = attrStr.getIterator();
|
|
for (int width = 200; width < 400; width += 10) {
|
|
LineBreakMeasurer measurer = new LineBreakMeasurer(it, breakIterator, frc);
|
|
System.out.print(width + " : ");
|
|
while (measurer.getPosition() < it.getEndIndex()) {
|
|
int nextOffset = measurer.nextOffset(width);
|
|
System.out.print(nextOffset + " ");
|
|
if (!possibleBreak[nextOffset]) {
|
|
System.out.println();
|
|
throw new RuntimeException("Invalid break at offset " + nextOffset + " (width = " + width + " font = " + font.getFontName() + ")");
|
|
}
|
|
measurer.setPosition(nextOffset);
|
|
}
|
|
System.out.println();
|
|
}
|
|
System.out.println("OK");
|
|
}
|
|
}
|
|
}
|
|
}
|