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/*
* Copyright (c) 2022, 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 8165943
* @summary LineBreakMeasurer does not measure correctly if TextAttribute.TRACKING is set
* @library ../../regtesthelpers
* @build PassFailJFrame
* @run main/manual LineBreakWithTracking
*/
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.font.FontRenderContext;
import java.awt.font.LineBreakMeasurer;
import java.awt.font.TextAttribute;
import java.awt.font.TextLayout;
import java.text.AttributedString;
import java.util.Hashtable;
import java.lang.reflect.InvocationTargetException;
class LineBreakPanel extends JPanel implements ActionListener {
private float textTracking = 0.0f;
private static String fontName = "Dialog";
private static String text = "This is a long line of text that should be broken across multiple lines. "
+ "Please set the different tracking values to test via menu! This test should pass if "
+ "these lines are broken to fit the width, and fail otherwise. It should "
+ "also format the hebrew (\u05d0\u05d1\u05d2 \u05d3\u05d4\u05d5) and arabic "
+ "(\u0627\u0628\u062a\u062c \u062e\u0644\u0627\u062e) and CJK "
+ "(\u4e00\u4e01\u4e02\uac00\uac01\uc4fa\u67b1\u67b2\u67b3\u67b4\u67b5\u67b6\u67b7"
+ "\u67b8\u67b9) text correctly.";
private LineBreakMeasurer lineMeasurer;
public void actionPerformed(ActionEvent e) {
textTracking = (float)((JRadioButtonMenuItem)e.getSource()).getClientProperty( "tracking" );
lineMeasurer = null;
invalidate();
repaint();
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
setBackground(Color.white);
Graphics2D g2d = (Graphics2D)g;
if (lineMeasurer == null) {
Float regular = Float.valueOf(16.0f);
Float big = Float.valueOf(24.0f);
Hashtable map = new Hashtable();
map.put(TextAttribute.SIZE, (float)18.0);
map.put(TextAttribute.TRACKING, (float)textTracking);
AttributedString astr = new AttributedString(text, map);
astr.addAttribute(TextAttribute.SIZE, regular, 0, text.length());
astr.addAttribute(TextAttribute.FAMILY, fontName, 0, text.length());
int ix = text.indexOf("broken");
astr.addAttribute(TextAttribute.SIZE, big, ix, ix + 6);
ix = text.indexOf("hebrew");
astr.addAttribute(TextAttribute.SIZE, big, ix, ix + 6);
ix = text.indexOf("arabic");
astr.addAttribute(TextAttribute.SIZE, big, ix, ix + 6);
ix = text.indexOf("CJK");
astr.addAttribute(TextAttribute.SIZE, big, ix, ix + 3);
FontRenderContext frc = g2d.getFontRenderContext();
lineMeasurer = new LineBreakMeasurer(astr.getIterator(), frc);
}
lineMeasurer.setPosition(0);
float w = (float)getSize().width;
float x = 0, y = 0;
TextLayout layout;
while ((layout = lineMeasurer.nextLayout(w)) != null) {
x = layout.isLeftToRight() ? 0 : w - layout.getAdvance();
y += layout.getAscent();
layout.draw(g2d, x, y);
y += layout.getDescent() + layout.getLeading();
}
}
}
public class LineBreakWithTracking {
private static final String INSTRUCTIONS = """
This manual test verifies that LineBreakMeasurer measures the lines'
breaks correctly taking into account the TextAttribute.TRACKING value.
The test string includes Latin, Arabic, CJK and Hebrew.
You should choose a tracking value from the menu and resize the window.
If the text lines break exactly to the wrapping width:
no room for one more word exists and
the text lines are not too long for given wrapping width, -
then press PASS, otherwise - FAIL.
""";
public void createGUI(JFrame frame) {
LineBreakPanel panel = new LineBreakPanel();
frame.getContentPane().add(panel, BorderLayout.CENTER);
JMenuBar menuBar = new JMenuBar();
JMenu menu = new JMenu("Tracking");
ButtonGroup btnGroup = new ButtonGroup();
String btnLabels[] = {"-0.1", "0", "0.1", "0.2", "0.3"};
float val = -0.1f;
for (String label : btnLabels) {
JRadioButtonMenuItem btn = new JRadioButtonMenuItem(label);
btn.putClientProperty( "tracking", val );
btn.addActionListener(panel);
btnGroup.add(btn);
menu.add(btn);
val += 0.1f;
}
menuBar.add(menu);
frame.setJMenuBar(menuBar);
}
public static void main(String[] args) throws InterruptedException, InvocationTargetException {
JFrame frame = new JFrame("LineBreakMeasurer with Tracking");
frame.setSize(new Dimension(640, 480));
LineBreakWithTracking controller = new LineBreakWithTracking();
controller.createGUI(frame);
PassFailJFrame passFailJFrame = new PassFailJFrame(INSTRUCTIONS);
PassFailJFrame.addTestWindow(frame);
PassFailJFrame.positionTestWindow(frame, PassFailJFrame.Position.HORIZONTAL);
frame.setVisible(true);
passFailJFrame.awaitAndCheck();
}
}
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