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