1 /* 2 * Copyright (c) 2011, 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.lwawt.macosx; 27 28 import sun.lwawt.LWCursorManager; 29 30 import java.awt.Cursor; 31 import java.awt.Point; 32 import java.awt.geom.Point2D; 33 34 final class CCursorManager extends LWCursorManager { 35 36 private static native Point2D nativeGetCursorPosition(); 37 private static native void nativeSetBuiltInCursor(final int type, final String name); 38 private static native void nativeSetCustomCursor(final long imgPtr, final double x, final double y); 39 public static native void nativeSetAllowsCursorSetInBackground(final boolean allows); 40 41 private static final int NAMED_CURSOR = -1; 42 43 private static final CCursorManager theInstance = new CCursorManager(); 44 public static CCursorManager getInstance() { 45 return theInstance; 46 } 47 48 private volatile Cursor currentCursor; 49 50 private CCursorManager() { } 51 52 @Override 53 protected Point getCursorPosition() { 54 final Point2D nativePosition = nativeGetCursorPosition(); 55 return new Point((int)nativePosition.getX(), (int)nativePosition.getY()); 56 } 57 58 @Override 59 protected void setCursor(final Cursor cursor) { 60 if (cursor == currentCursor) { 61 return; 62 } 63 currentCursor = cursor; 64 65 if (cursor == null) { 66 nativeSetBuiltInCursor(Cursor.DEFAULT_CURSOR, null); 67 return; 68 } 69 70 if (cursor instanceof CCustomCursor) { 71 final CCustomCursor customCursor = (CCustomCursor) cursor; 72 final long imagePtr = customCursor.getImageData(); 73 if (imagePtr != 0L) { 74 final Point hotSpot = customCursor.getHotSpot(); 75 nativeSetCustomCursor(imagePtr, hotSpot.x, hotSpot.y); 76 } 77 return; 78 } 79 80 final int type = cursor.getType(); 81 if (type != Cursor.CUSTOM_CURSOR) { 82 nativeSetBuiltInCursor(type, null); 83 return; 84 } 85 86 final String name = cursor.getName(); 87 if (name != null) { 88 nativeSetBuiltInCursor(NAMED_CURSOR, name); 89 return; 90 } 91 92 // do something special 93 throw new RuntimeException("Unimplemented"); 94 } 95 }