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.
89 lines
3.2 KiB
Java
89 lines
3.2 KiB
Java
/*
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* Copyright (c) 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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/*
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* @test
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* @bug 8017266
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* @summary Verifies if Background is painted taller than needed for styled text.
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* @run main TestGlyphBGHeight
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*/
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import java.io.File;
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import java.awt.Graphics;
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import java.awt.BorderLayout;
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import java.awt.Color;
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import java.awt.image.BufferedImage;
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import javax.imageio.ImageIO;
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import javax.swing.JFrame;
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import javax.swing.JTextPane;
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import javax.swing.text.Style;
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import javax.swing.text.StyleConstants;
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import javax.swing.text.StyledDocument;
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public class TestGlyphBGHeight {
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private static final int WIDTH = 100;
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private static final int HEIGHT = 100;
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private static final int FONTSIZE = 32;
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private static final Color EMPTY_PIXEL = new Color(0xFFFFFFFF);
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static BufferedImage createImage() throws Exception {
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final BufferedImage img = new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_ARGB);
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Graphics g = img.getGraphics();
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g.setColor(EMPTY_PIXEL);
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g.fillRect(0, 0, WIDTH, HEIGHT);
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return img;
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}
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public static void main(String[] args) throws Exception {
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final BufferedImage img = createImage();
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final JTextPane textPane = new JTextPane();
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final StyledDocument doc = textPane.getStyledDocument();
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Style style = textPane.addStyle("superscript", null);
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StyleConstants.setSuperscript(style, true);
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StyleConstants.setFontSize(style, FONTSIZE);
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StyleConstants.setBackground(style, Color.YELLOW);
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try {
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doc.insertString(doc.getLength(), "hello", style);
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} catch (Exception e) {}
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textPane.setSize(WIDTH, HEIGHT);
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textPane.setBackground(Color.RED);
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textPane.paint(img.getGraphics());
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ImageIO.write(img, "png", new File("AppTest.png"));
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BufferedImage bimg = img.getSubimage(0, FONTSIZE + 20, WIDTH, 1);
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ImageIO.write(bimg, "png", new File("AppTest1.png"));
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for (int x = 10; x < WIDTH / 2; x++) {
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int col = bimg.getRGB(x, 0);
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System.out.println(Integer.toHexString(col));
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if (col == Color.YELLOW.getRGB()) {
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throw new RuntimeException(" Background is painted taller than needed for styled text");
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}
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}
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}
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}
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