/* * Copyright (c) 2006, 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. */ import java.awt.Dimension; import java.awt.Graphics; import java.awt.Rectangle; import java.awt.Shape; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.util.ArrayList; import java.util.Arrays; import java.util.List; import javax.imageio.ImageIO; import javax.swing.JEditorPane; import javax.swing.JFrame; import javax.swing.SwingUtilities; import javax.swing.text.AbstractDocument; import javax.swing.text.BadLocationException; import javax.swing.text.Position; import javax.swing.text.View; import javax.swing.text.html.HTMLEditorKit; import static java.awt.image.BufferedImage.TYPE_INT_RGB; /* * @test * @bug 6364882 8273634 * @summary tests if broken and last lines in paragraph are not justified * @run main bug6364882 */ public class bug6364882 { private static final String TEXT = "

" + "should be justified should be justified should be justified " + "should be justified should be justified should be justified " + "should be justified should be justified should be justified " + "should be justified should be justified should be justified " + "should be justified should be justified should be justified " + "should be justified should be justified should be justified " + "
" + "should not be justified
" + "should not be justified" + ""; private static final int WIDTH = 580; private static final int HEIGHT = 300; public static final String IMAGE_FILENAME = "editorPane.png"; private static JEditorPane editorPane; private static volatile List errors; public static void main(String[] args) throws Exception { List argList = Arrays.asList(args); // Show frame for visual inspection final boolean showFrame = argList.contains("-show"); // Save the rendered image even if the test passes // If the test fails, the image is always saved final boolean saveImage = argList.contains("-save"); SwingUtilities.invokeAndWait(() -> { createUI(showFrame); BufferedImage image = paintToImage(); boolean exceptionThrown = false; try { errors = checkJustification(); } catch (Throwable t) { exceptionThrown = true; throw t; } finally { if (exceptionThrown || errors.size() > 0 || saveImage) { saveImage(image); dumpViews(); } } }); if (errors != null && errors.size() > 0) { String message = "Test failed: " + errors.size() + " error(s)"; System.err.println(message); for (Error e : errors) { e.printStackTrace(); } throw new RuntimeException(message + " - " + errors.get(0).getMessage()); } System.out.println("Test passed"); } private static void createUI(boolean showFrame) { editorPane = new JEditorPane(); editorPane.setEditorKit(new HTMLEditorKit()); ((AbstractDocument) editorPane.getDocument()).setAsynchronousLoadPriority(-1); editorPane.setText(TEXT); editorPane.setSize(WIDTH, HEIGHT); if (showFrame) { JFrame frame = new JFrame("bug6364882"); frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); frame.getContentPane().add(editorPane); frame.setSize(WIDTH, HEIGHT); frame.setLocationRelativeTo(null); frame.setVisible(true); } } private static List checkJustification() { final List errors = new ArrayList<>(15); try { final View rootView = editorPane.getUI().getRootView(editorPane); final View blockView = rootView.getView(0); assert blockView.getViewCount() == 2 : "blockView doesn't have 2 child views"; final View bodyView = blockView.getView(1); final View paragraphView = bodyView.getView(0); final int rowCount = paragraphView.getViewCount(); if (rowCount < 4) { errors.add(new Error("Less than 4 lines of text: no justified lines")); return errors; } final Rectangle bounds = editorPane.getBounds(); final int rightMargin = bounds.width - 15; // First lines should be justified int lineNo = 0; final int oneX = getEndOfLineX(paragraphView.getView(lineNo++), bounds); if (oneX < rightMargin) { errors.add(new Error("Text is not justified at line " + lineNo + ": " + oneX + " < " + rightMargin)); } // Justified lines should have the same width while (lineNo < rowCount - 3) { int lineX = getEndOfLineX(paragraphView.getView(lineNo++), bounds); if (oneX != lineX) { errors.add(new Error("Text is not justified at line " + lineNo + ": " + oneX + " != " + lineX)); } } // The last line of the wrapped text, before the first
, // should not be justified final int twoX = getEndOfLineX(paragraphView.getView(lineNo++), bounds); if (oneX == twoX) { errors.add(new Error("Line " + lineNo + " is justified: " + oneX + " vs " + twoX)); } if (twoX > rightMargin) { errors.add(new Error("Line " + lineNo + " is justified: " + twoX + " > " + rightMargin)); } // The next two lines are created by line break
// They should not be justified and should be of the same width final int threeX = getEndOfLineX(paragraphView.getView(lineNo++), bounds); if (oneX == threeX) { errors.add(new Error("Line " + lineNo + " is justified: " + oneX + " == " + threeX)); } if (threeX > bounds.width / 2) { errors.add(new Error("Line " + lineNo + " is justified: " + threeX + " > " + (bounds.width / 2))); } final int lastX = getEndOfLineX(paragraphView.getView(lineNo), bounds); if (threeX != lastX) { errors.add(new Error("Line " + lineNo + " and " + (lineNo + 1) + " have different width: " + threeX + " != " + lastX)); } return errors; } catch (BadLocationException e) { throw new RuntimeException(e); } } private static int getEndOfLineX(final View rowView, final Rectangle bounds) throws BadLocationException { final View inlineView = rowView.getView(0); Shape loc = inlineView.modelToView(inlineView.getEndOffset() - 1, bounds, Position.Bias.Backward); return loc instanceof Rectangle ? ((Rectangle) loc).x : loc.getBounds().x; } private static BufferedImage paintToImage() { Dimension bounds = editorPane.getSize(); BufferedImage im = new BufferedImage(bounds.width, bounds.height, TYPE_INT_RGB); Graphics g = im.getGraphics(); editorPane.paint(g); g.dispose(); return im; } private static void saveImage(BufferedImage image) { try { ImageIO.write(image, "png", new File(IMAGE_FILENAME)); } catch (IOException e) { // Don't propagate the exception e.printStackTrace(); } } private static void dumpViews() { final View view = editorPane.getUI().getRootView(editorPane); dumpViews(view, ""); } private static void dumpViews(final View view, final String indent) { System.err.println(indent + view.getClass().getName() + ": " + view.getStartOffset() + ", " + view.getEndOffset() + "; span: " + view.getPreferredSpan(View.X_AXIS)); final String nestedIndent = indent + " "; for (int i = 0; i < view.getViewCount(); i++) { dumpViews(view.getView(i), nestedIndent); } } }