Backport 1b68c731f2461a2f26e6d967dd3f94e217b4d1f4

Author: duke

test/jdk/java/awt/Cursor/MultiResolutionCursorTest.java

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+/*
+ * Copyright (c) 2013, 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.
+ */
+
+import java.awt.Color;
+import java.awt.Cursor;
+import java.awt.Graphics2D;
+import java.awt.Image;
+import java.awt.Label;
+import java.awt.Point;
+import java.awt.Toolkit;
+import java.awt.image.BaseMultiResolutionImage;
+import java.awt.image.BufferedImage;
+import java.lang.reflect.InvocationTargetException;
+import javax.swing.JFrame;
+
+/*
+ * @test
+ * @bug 8028212
+ * @summary [macosx] Custom Cursor HiDPI support
+ * @requires (os.family == "mac")
+ * @library /java/awt/regtesthelpers
+ * @build PassFailJFrame
+ * @run main/manual MultiResolutionCursorTest
+ */
+public class MultiResolutionCursorTest {
+    static final int sizes[] = {8, 16, 32, 128};
+
+    private static JFrame initialize() {
+        final Image image = new BaseMultiResolutionImage(
+                createResolutionVariant(0),
+                createResolutionVariant(1),
+                createResolutionVariant(2),
+                createResolutionVariant(3)
+        );
+
+        int center = sizes[0] / 2;
+        Cursor cursor = Toolkit.getDefaultToolkit().createCustomCursor(
+                image, new Point(center, center), "multi-resolution cursor");
+
+        JFrame frame = new JFrame("Multi-resolution Cursor Test Frame");
+        frame.setSize(300, 300);
+        frame.add(new Label("Move cursor here"));
+        frame.setCursor(cursor);
+        return frame;
+    }
+
+    private static BufferedImage createResolutionVariant(int i) {
+        BufferedImage resolutionVariant = new BufferedImage(sizes[i], sizes[i],
+                BufferedImage.TYPE_INT_RGB);
+        Graphics2D g2 = resolutionVariant.createGraphics();
+        Color colors[] = {Color.WHITE, Color.RED, Color.GREEN, Color.BLUE};
+        g2.setColor(colors[i]);
+        g2.fillRect(0, 0, sizes[i], sizes[i]);
+        g2.dispose();
+        return resolutionVariant;
+    }
+
+    public static void main(String[] args) throws InterruptedException,
+            InvocationTargetException {
+        String instructions = """
+                   Verify that high resolution custom cursor is used
+                   on HiDPI displays.
+                   1) Run the test on Retina display or enable the Quartz Debug
+                      and select the screen resolution with (HiDPI) label
+                   2) Move the cursor to the Test Frame
+                   3) Check that cursor has red, green or blue color
+                   If so, press Pass, else press Fail.
+                   """;
+
+        PassFailJFrame.builder()
+                .title("Multi-resolution Cursor Test Instructions")
+                .instructions(instructions)
+                .rows((int) instructions.lines().count() + 1)
+                .columns(40)
+                .testUI(MultiResolutionCursorTest::initialize)
+                .build()
+                .awaitAndCheck();
+    }
+}