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.
113 lines
3.9 KiB
Java
113 lines
3.9 KiB
Java
/*
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* Copyright (c) 2006, 2025, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.awt.Color;
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import java.awt.Dimension;
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import java.awt.Font;
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import java.awt.Graphics;
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import java.awt.Graphics2D;
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import java.awt.GraphicsEnvironment;
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import java.awt.RenderingHints;
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import javax.swing.JPanel;
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/*
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* @test
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* @bug 6320502
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* @summary Display laid out text which substitutes invisible glyphs correctly.
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* @library /java/awt/regtesthelpers /test/lib
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* @build PassFailJFrame jtreg.SkippedException
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* @run main/manual TestGASPHint
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*/
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public class TestGASPHint extends JPanel {
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private static final String text = "\u0905\u0901\u0917\u094d\u0930\u0947\u091c\u093c\u0940";
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private static final Font font = getPhysicalFontForText(text, Font.PLAIN, 36);
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public static void main(String[] args) throws Exception {
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if (font == null) {
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throw new jtreg.SkippedException("No Devanagari font found. Test Skipped");
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}
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final String INSTRUCTIONS = """
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A short piece of Devanagari text should appear without any
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artifacts. In particular there should be no "empty rectangles"
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representing the missing glyph.
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If the above condition is true, press Pass, else Fail.""";
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PassFailJFrame.builder()
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.title("TestGASPHint Instruction")
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.instructions(INSTRUCTIONS)
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.columns(32)
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.splitUI(TestGASPHint::new)
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.build()
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.awaitAndCheck();
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}
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@Override
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public Dimension getPreferredSize() {
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return new Dimension(200, 200);
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}
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@Override
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public void paint(Graphics g) {
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Graphics2D g2d = (Graphics2D) g;
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g2d.setColor(Color.WHITE);
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g2d.fillRect(0, 0, getWidth(), getHeight());
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g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
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RenderingHints.VALUE_TEXT_ANTIALIAS_GASP);
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g2d.setFont(font);
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g2d.setColor(Color.BLACK);
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g2d.drawString(text, 10, 50);
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}
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/*
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* Searches the available system fonts for a font which can display all the
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* glyphs in the input text correctly. Returns null, if not found.
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*/
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private static Font getPhysicalFontForText(String text, int style, int size) {
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GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
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String[] names = ge.getAvailableFontFamilyNames();
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for (String n : names) {
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switch (n.toLowerCase()) {
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case "dialog":
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case "dialoginput":
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case "serif":
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case "sansserif":
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case "monospaced":
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break;
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default:
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Font f = new Font(n, style, size);
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if (f.canDisplayUpTo(text) == -1) {
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return f;
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}
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}
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}
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return null;
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}
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}
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