1 /* 2 * Copyright (c) 2012, 2013, 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 27 package com.sun.glass.ui.lens; 28 29 import java.nio.Buffer; 30 import java.nio.ByteBuffer; 31 import java.nio.IntBuffer; 32 import com.sun.glass.ui.Cursor; 33 import com.sun.glass.ui.Pixels; 34 import com.sun.glass.ui.Size; 35 import com.sun.glass.ui.Application; 36 37 final class LensCursor extends Cursor { 38 39 // LensCursor doesn't use ptr from superclass 40 private long ptr = 0; 41 42 protected LensCursor(int type) { 43 super(type); 44 45 if (type != CURSOR_NONE) { 46 ptr = _createNativeCursorByType(type); 47 } 48 } 49 50 protected LensCursor(int x, int y, Pixels pixels) { 51 super(x, y, pixels); 52 ptr = getNativeCursor(); 53 } 54 55 56 protected void finalize() throws Throwable { 57 try { 58 if (ptr != 0) { 59 _releaseNativeCursor(ptr); 60 } 61 } finally { 62 super.finalize(); 63 } 64 } 65 66 @Override 67 protected long _createCursor(int x, int y, Pixels pixels) { 68 69 long res = 0; 70 Buffer data = pixels.getPixels(); 71 int width = pixels.getWidth(); 72 int height = pixels.getHeight(); 73 74 if (data != null) { 75 if (!data.isDirect()) { 76 if (pixels.getBytesPerComponent() == 4) { 77 IntBuffer ints = (IntBuffer)(data.rewind()); 78 int[] intArray = ints.array(); 79 res = _createNativeCursorInts(x, y, intArray, width, height); 80 } else if (pixels.getBytesPerComponent() == 1) { 81 ByteBuffer bytes = (ByteBuffer)(data.rewind()); 82 byte[] byteArray = bytes.array(); 83 res = _createNativeCursorBytes(x, y, byteArray, width, height); 84 } 85 } else { 86 data.rewind(); 87 res = _createNativeCursorDirect(x, y, data, data.capacity(), width , height); 88 89 } 90 } 91 return res; 92 } 93 94 void set() { 95 if (ptr != 0) { 96 _setNativeCursor(ptr); 97 } 98 99 int type = getType(); 100 if (type == CURSOR_NONE) { 101 // CURSOR_NONE is mapped to setVisible(false) and will be registered 102 // in LensApplication as a user preference to not show the cursor. 103 ((LensApplication)Application.GetApplication()).staticCursor_setVisible(false); 104 } else { 105 ((LensApplication)Application.GetApplication()).staticCursor_setVisible(true); 106 } 107 } 108 109 110 111 static void setVisible_impl(boolean visible) { 112 _setVisible(visible); 113 } 114 115 static Size getBestSize_impl(int width, int height) { 116 return new Size(16, 16); 117 } 118 119 120 native private void _setNativeCursor(long ptr); 121 native private void _releaseNativeCursor(long ptr); 122 123 native private long _createNativeCursorByType(int type); 124 125 native private long _createNativeCursorInts(int x, int y, int[] array, int width, int height); 126 native private long _createNativeCursorBytes(int x, int y, byte[] array, int width, int height); 127 native private long _createNativeCursorDirect(int x, int y, Buffer array, int capacity, int width, int height); 128 129 native static private void _setVisible(boolean isVisible); 130 }