101 lines
3.3 KiB
Java
101 lines
3.3 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 4178123
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* @summary Verifies that the Arc2D.contains(point) methods work correctly.
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* @library /java/awt/regtesthelpers
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* @build PassFailJFrame
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* @run main/manual Arc2DHitTest
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*/
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import java.awt.Color;
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import java.awt.Frame;
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import java.awt.Graphics;
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import java.awt.Graphics2D;
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import java.awt.Panel;
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import java.awt.Point;
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import java.awt.event.MouseAdapter;
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import java.awt.event.MouseEvent;
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import java.awt.geom.Arc2D;
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public class Arc2DHitTest {
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public static void main(String[] args) throws Exception {
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String INSTRUCTIONS = """
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This test displays an arc figure and lets the user click on it.
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The arc will initially be drawn in red and only when the user clicks
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within the arc in the window it will be redrawn into green otherwise
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it should stay red.
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For convenience, the point being tested is drawn in black. Note
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that rounding in the arc rendering routines may cause points near
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the boundary of the arc to render incorrectly. Allow for a pixel
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or two of leeway near the boundary.
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""";
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PassFailJFrame.builder()
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.title("Test Instructions")
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.instructions(INSTRUCTIONS)
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.columns(40)
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.testUI(initialize())
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.build()
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.awaitAndCheck();
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}
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private static Frame initialize() {
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Frame f = new Frame("Arc2DHitTest");
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ArcHitPanel panel = new ArcHitPanel();
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f.add(panel);
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f.setSize(300, 250);
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return f;
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}
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}
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class ArcHitPanel extends Panel {
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private Arc2D arc;
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private Point hit;
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public ArcHitPanel() {
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arc = new Arc2D.Float(10, 10, 100, 100, 0, 120, Arc2D.PIE);
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this.addMouseListener(new MouseAdapter() {
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public void mouseClicked(MouseEvent e) {
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hit = e.getPoint();
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repaint();
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}
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});
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}
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@Override
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public void paint(Graphics g) {
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Graphics2D g2 = (Graphics2D) g;
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g2.setColor(Color.white);
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g2.fill(g2.getClipBounds());
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g2.setColor((hit != null && arc.contains(hit))
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? Color.green : Color.red);
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g2.fill(arc);
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if (hit != null) {
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g2.setColor(Color.black);
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g2.fillRect(hit.x, hit.y, 1, 1);
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}
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}
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}
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