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.
61 lines
3.1 KiB
Java
61 lines
3.1 KiB
Java
/*
|
|
* Copyright (c) 2016, 2025, Oracle and/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
|
|
* @summary Test getGlyphCharIndex() results from layout
|
|
* @bug 8152680 8361381
|
|
*/
|
|
|
|
import java.awt.Font;
|
|
import java.awt.font.FontRenderContext;
|
|
import java.awt.font.GlyphVector;
|
|
|
|
public class GetGlyphCharIndexTest {
|
|
public static void main(String[] args) {
|
|
Font font = new Font(Font.MONOSPACED, Font.PLAIN, 12);
|
|
FontRenderContext frc = new FontRenderContext(null, false, false);
|
|
GlyphVector gv = font.layoutGlyphVector(frc, "abc".toCharArray(), 1, 3,
|
|
Font.LAYOUT_LEFT_TO_RIGHT);
|
|
int idx0 = gv.getGlyphCharIndex(0);
|
|
if (idx0 != 0) {
|
|
throw new RuntimeException("Expected 0, got " + idx0);
|
|
}
|
|
|
|
// This is the encoding-independent Khmer string "បានស្នើសុំនៅតែត្រូវបានបដិសេធ"
|
|
// We can't check for more details like e.g. correct line breaking because it is font and platform dependent,
|
|
// but we can at least chack that the created GlyphVector has monotonically increasing character indices.
|
|
// This is guaranteed by HarfBuzz's HB_BUFFER_CLUSTER_LEVEL_MONOTONE_CHARACTERS cluster level which is used
|
|
// in the OpenJDK layout implementation.
|
|
String khmer = "\u1794\u17b6\u1793\u179f\u17d2\u1793\u17be\u179f\u17bb\u17c6\u1793\u17c5" +
|
|
"\u178f\u17c2\u178f\u17d2\u179a\u17bc\u179c\u1794\u17b6\u1793\u1794\u178a\u17b7\u179f\u17c1\u1792";
|
|
font = new Font(Font.DIALOG, Font.PLAIN, 12);
|
|
gv = font.layoutGlyphVector(frc, khmer.toCharArray(), 0, khmer.length(), 0);
|
|
int[] indices = gv.getGlyphCharIndices(0, gv.getNumGlyphs(), null);
|
|
for (int i = 0; i < (indices.length - 1); i++) {
|
|
if (indices[i] > indices[i + 1]) {
|
|
throw new RuntimeException("Glyph character indices are supposed to be monotonically growing, but character index at position " +
|
|
i + " is bigger then the one at position " + (i + 1) + ", i.e. " + indices[i] + " > " + indices[i + 1] + ".");
|
|
}
|
|
}
|
|
}
|
|
}
|