8071705: Java application menu misbehaves when running multiple screen stacked vertically

Summary: JMenu miscalculates the position of the Popup origin when on multiple monitors stacked vertically
Reviewed-by: alexsch

src/share/classes/javax/swing/JMenu.java

@@ -475,7 +475,8 @@ public class JMenu extends JMenuItem implements Accessible,MenuElement
             }
             // Then the y:
             y = s.height + yOffset;    // Prefer dropping down
-            if (position.y + y + pmSize.height >= screenBounds.height &&
+            if (position.y + y + pmSize.height >= screenBounds.height
+                                                  + screenBounds.y &&
                 // popup doesn't fit - place it wherever there's more room
                 screenBounds.height - s.height < 2*(position.y
                                                   - screenBounds.y)) {

test/javax/swing/JMenu/8071705/bug8071705.java

+/*
+ * Copyright (c) 2015, 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 8071705
+ * @summary  Java application menu misbehaves when running multiple screen stacked vertically
+ * @build bug8071705
+ * @run main/othervm bug8071705
+ */
+
+import java.awt.Dimension;
+import java.awt.GraphicsConfiguration;
+import java.awt.GraphicsDevice;
+import java.awt.GraphicsEnvironment;
+import java.awt.Point;
+import java.awt.Rectangle;
+import java.awt.Toolkit;
+import java.awt.event.ComponentAdapter;
+import java.awt.event.ComponentEvent;
+import java.awt.event.KeyEvent;
+import java.util.concurrent.CountDownLatch;
+
+import javax.swing.JFrame;
+import javax.swing.JMenu;
+import javax.swing.JMenuBar;
+import javax.swing.JMenuItem;
+import javax.swing.JPopupMenu;
+import javax.swing.SwingUtilities;
+import javax.swing.UIManager;
+
+public class bug8071705 {
+
+    public static void main(String[] args) throws Exception {
+
+        final CountDownLatch latch = new CountDownLatch(1);
+        final boolean [] result = new boolean[1];
+
+        SwingUtilities.invokeLater(new Runnable() {
+            @Override
+            public void run() {
+                JFrame frame = createGUI();
+                GraphicsDevice[] devices = checkScreens();
+
+                // check if we have more than one and if they are stacked
+                // vertically
+                GraphicsDevice device = checkConfigs(devices);
+                if (device == null) {
+                    // just pass the test
+                    frame.dispose();
+                    result[0] = true;
+                    latch.countDown();
+                } else {
+                    FrameListener listener =
+                            new FrameListener(device, latch, result);
+                    frame.addComponentListener(listener);
+                    frame.setVisible(true);
+                }
+            }
+        });
+
+        latch.await();
+
+        if (result[0] == false) {
+            throw new RuntimeException("popup menu rendered in wrong position");
+        }
+
+        System.out.println("OK");
+    }
+
+    private static GraphicsDevice[] checkScreens() {
+        GraphicsEnvironment ge =
+            GraphicsEnvironment.getLocalGraphicsEnvironment();
+        return ge.getScreenDevices();
+    }
+
+    private static JFrame createGUI() {
+        JMenuBar menuBar = new JMenuBar();
+        JMenu menu = new JMenu("Some menu");
+        menuBar.add(menu);
+
+        for (int i = 0; i < 10; i++) {
+            menu.add(new JMenuItem("Some menu #" + i));
+        }
+
+        JFrame frame = new JFrame();
+        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        frame.setMinimumSize(new Dimension(200, 200));
+        frame.setJMenuBar(menuBar);
+        return frame;
+    }
+
+    private static GraphicsDevice checkConfigs(GraphicsDevice[] devices) {
+
+        GraphicsDevice correctDevice = null;
+        if (devices.length < 2) {
+            return correctDevice;
+        }
+
+        Toolkit toolkit = Toolkit.getDefaultToolkit();
+        Rectangle screenBounds = new Rectangle(toolkit.getScreenSize());
+        int halfScreen = screenBounds.height/2;
+
+        for(int i = 0; i < devices.length; i++) {
+            if(devices[i].getType() == GraphicsDevice.TYPE_RASTER_SCREEN) {
+                GraphicsConfiguration conf =
+                        devices[i].getDefaultConfiguration();
+                Rectangle bounds = conf.getBounds();
+                if (bounds.y >= halfScreen) {
+                    // found
+                    correctDevice = devices[i];
+                    break;
+                }
+            }
+        }
+        return correctDevice;
+    }
+
+    private static class FrameListener extends ComponentAdapter {
+
+        private GraphicsDevice device;
+        private CountDownLatch latch;
+        private boolean [] result;
+        public FrameListener(GraphicsDevice device,
+                             CountDownLatch latch,
+                             boolean [] result)
+        {
+            this.device = device;
+            this.latch = latch;
+            this.result = result;
+        }
+
+        @Override
+        public void componentShown(ComponentEvent e) {
+            JFrame frame = (JFrame) e.getComponent();
+
+            runActualTest(device, latch, frame, result);
+
+            frame.setVisible(false);
+            frame.dispose();
+            latch.countDown();
+        }
+    }
+
+    private static Rectangle setLocation(JFrame frame, GraphicsDevice device) {
+        GraphicsConfiguration conf = device.getDefaultConfiguration();
+        Rectangle bounds = conf.getBounds();
+
+        // put just below half screen
+        int x = bounds.x + bounds.width/2;
+        int y = bounds.y + bounds.height/2;
+        frame.setLocation(x, y);
+
+        return bounds;
+    }
+
+    private static void runActualTest(GraphicsDevice device,
+                                      CountDownLatch latch,
+                                      JFrame frame,
+                                      boolean [] result)
+    {
+        Rectangle screenBounds = setLocation(frame, device);
+        JMenu menu = frame.getJMenuBar().getMenu(0);
+        menu.doClick();
+
+        Point location = menu.getLocationOnScreen();
+        JPopupMenu pm = menu.getPopupMenu();
+        Dimension pmSize = pm.getSize();
+
+        int yOffset = UIManager.getInt("Menu.submenuPopupOffsetY");
+        int height = location.y + yOffset + pmSize.height + menu.getHeight();
+        int available = screenBounds.y + screenBounds.height - height;
+        if (available > 0) {
+            Point origin = pm.getLocationOnScreen();
+            if (origin.y < location.y) {
+                // growing upward, wrong!
+                result[0] = false;
+            } else {
+                // growing downward, ok!
+                result[0] = true;
+            }
+        } else {
+            // there is no space, growing upward would be ok, so we pass
+            result[0] = true;
+        }
+    }
+}