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/*
* Copyright (c) 1999, 2024, 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 4210250
* @summary Tests that PlainView repaints the necessary lines of text.
* @library /java/awt/regtesthelpers
* @build PassFailJFrame
* @run main/manual PaintTest
*/
import java.awt.Container;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.SwingUtilities;
public class PaintTest {
private static final String INSTRUCTIONS =
"Click the paint button.\n" +
"If half of the second line is erased,\n" +
"that is you can only see the bottom half of the second line\n" +
"with the top half painted over in white, click fail, else click pass.";
public static void main(String[] args) throws Exception {
PassFailJFrame.builder()
.title("PlainView Repaint Instructions")
.instructions(INSTRUCTIONS)
.rows(7)
.columns(35)
.testUI(PaintTest::createTestUI)
.build()
.awaitAndCheck();
}
private static JFrame createTestUI() {
JFrame frame = new JFrame("PaintTest");
new PaintTest().create(frame.getContentPane());
frame.pack();
return frame;
}
void create(Container parent) {
parent.setLayout(new FlowLayout());
final JTextArea ta = new JTextArea
("A sample textarea\nwith a couple of lines\nof text") {
public Dimension getPreferredSize() {
Dimension size = super.getPreferredSize();
if (getFont() != null) {
size.height += getFontMetrics(getFont())
.getHeight() / 2;
}
return size;
}
};
JButton button = new JButton("paint");
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
Rectangle taBounds = ta.getBounds();
int fontHeight =
ta.getFontMetrics(ta.getFont()).getHeight();
taBounds.height = fontHeight + fontHeight / 2;
ta.repaint(taBounds);
}
});
}
});
parent.add(new JScrollPane(ta));
parent.add(button);
}
}
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