92 lines
2.9 KiB
Java
92 lines
2.9 KiB
Java
/*
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* Copyright (c) 2001, 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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import java.awt.Color;
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import java.awt.Component;
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import java.awt.Dimension;
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import java.awt.FlowLayout;
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import java.awt.Frame;
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import java.awt.Graphics;
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/*
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* @test
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* @bug 4023385
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* @summary resizing a frame causes too many repaints
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* @library /java/awt/regtesthelpers
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* @build PassFailJFrame
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* @run main/manual FramePaintTest
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*/
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public class FramePaintTest {
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private static final String INSTRUCTIONS = """
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You should see a Frame titled "Repaint Test", filled with colored blocks.
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Resize the frame several times, both inward as well as outward.
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The blocks should move to fill the window without any flashes or
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glitches which ensures that repaint is not done excessively
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""";
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public static void main(String[] args) throws Exception {
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PassFailJFrame.builder()
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.title("FramePaintTest Instructions")
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.instructions(INSTRUCTIONS)
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.columns(45)
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.testUI(ResizeLW::new)
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.build()
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.awaitAndCheck();
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}
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static class ResizeLW extends Frame {
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public ResizeLW() {
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super("Repaint Test");
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setBackground(Color.red);
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setLayout(new FlowLayout());
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setSize(300, 300);
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for (int i = 0; i < 10; i++) {
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add(new ColorComp(Color.blue));
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add(new ColorComp(Color.green));
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}
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}
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private static class ColorComp extends Component {
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public ColorComp(Color c) {
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super();
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setBackground(c);
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}
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public void paint(Graphics g) {
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g.setColor(getBackground());
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g.fillRect(0, 0, getWidth(), getHeight());
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}
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public Dimension getPreferredSize() {
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return new Dimension(50, 50);
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}
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}
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}
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}
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