1 /*
   2  * Copyright (c) 1999, 2000, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.awt.windows;
  27 
  28 import java.awt.*;
  29 import sun.awt.GlobalCursorManager;
  30 import sun.awt.LightweightFrame;
  31 import sun.swing.JLightweightFrame;
  32 import sun.swing.LightweightContent;
  33 import sun.swing.SwingAccessor;
  34 
  35 public final class WGlobalCursorManager extends GlobalCursorManager {
  36     private static WGlobalCursorManager manager;
  37 
  38     public static GlobalCursorManager getCursorManager() {
  39         if (manager == null) {
  40             manager = new WGlobalCursorManager();
  41         }
  42         return manager;
  43     }
  44 
  45     /**
  46      * Should be called in response to a native mouse enter or native mouse
  47      * button released message. Should not be called during a mouse drag.
  48      */
  49     public static void nativeUpdateCursor(Component heavy) {
  50         WGlobalCursorManager.getCursorManager().updateCursorLater(heavy);
  51     }
  52 
  53     protected void setCursor(final Component comp, final Cursor cursor, final boolean u) {
  54         JLightweightFrame lwFrameUnderCursor = WLightweightFramePeer.getFrameUnderCursor();
  55         if (lwFrameUnderCursor != null) {
  56             LightweightContent lwContent = SwingAccessor
  57                     .getJLightweightFrameAccessor()
  58                     .getLightweightContent(lwFrameUnderCursor);
  59             lwContent.invokeOnClientToolkitThread(() -> setCursorDirect(comp, cursor, u));
  60         } else {
  61             setCursorImpl(comp, cursor, u);
  62         }
  63     }
  64 
  65     protected native void setCursorImpl(Component comp, Cursor cursor, boolean u);
  66     protected native void setCursorDirect(Component component, Cursor cursor, boolean u);
  67     protected native void getCursorPos(Point p);
  68     protected native Component findComponentAt(Container con, int x, int y);
  69     /*
  70      * two native methods to call corresponding methods in Container and
  71      * Component
  72      */
  73     protected native Component findHeavyweightUnderCursor(boolean useCache);
  74     protected native Point getLocationOnScreen(Component com);
  75 }