/* * Copyright (c) 2021, 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 * @bug 8231286 * @summary Verifies if HTML font size too large with high-DPI scaling and W3C_LENGTH_UNITS * @run main/othervm -Dsun.java2d.uiScale=1.0 HtmlFontSizeTest */ import java.awt.Dimension; import java.util.Locale; import javax.swing.JEditorPane; import javax.swing.SwingUtilities; import javax.swing.text.Document; import javax.swing.text.html.HTMLEditorKit; public class HtmlFontSizeTest { static volatile Dimension w3cFrameSize; static volatile Dimension stdFrameSize; private static Dimension test(boolean w3ccheck) { JEditorPane htmlPane = new JEditorPane(); htmlPane.setEditable(false); if (w3ccheck) { htmlPane.putClientProperty(JEditorPane.W3C_LENGTH_UNITS, Boolean.TRUE); } HTMLEditorKit kit = new HTMLEditorKit(); htmlPane.setEditorKit(kit); String htmlString = "\n" + "\n" + "

This should be 16 pt.

\n" + "\n" + ""; Document doc = kit.createDefaultDocument(); htmlPane.setDocument(doc); htmlPane.setText(htmlString); return htmlPane.getPreferredSize(); } public static void main(String[] args) throws Exception { SwingUtilities.invokeAndWait(() -> { w3cFrameSize = test(true); stdFrameSize = test(false); }); System.out.println("size with W3C:" + w3cFrameSize); System.out.println("size without W3C:" + stdFrameSize); float ratio = (float)w3cFrameSize.width / (float)stdFrameSize.width; System.out.println("w3cFrameSize.width/stdFrameSize.width " + ratio); if (!"1.3".equals(String.format(Locale.ENGLISH, "%.1f", ratio))) { throw new RuntimeException("HTML font size too large with high-DPI scaling and W3C_LENGTH_UNITS"); } } }