1 /* 2 * Copyright (c) 2016, 2018, 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 com.sun.javafx.scene; 27 28 import com.sun.javafx.geom.BaseBounds; 29 import com.sun.javafx.geom.transform.BaseTransform; 30 import static com.sun.javafx.scene.NodeHelper.setHelper; 31 import com.sun.javafx.sg.prism.NGNode; 32 import com.sun.javafx.util.Utils; 33 import javafx.scene.Node; 34 import javafx.scene.image.ImageView; 35 36 /** 37 * Used to access internal methods of ImageView. 38 */ 39 public class ImageViewHelper extends NodeHelper { 40 41 private static final ImageViewHelper theInstance; 42 private static ImageViewAccessor imageViewAccessor; 43 44 static { 45 theInstance = new ImageViewHelper(); 46 Utils.forceInit(ImageView.class); 47 } 48 49 private static ImageViewHelper getInstance() { 50 return theInstance; 51 } 52 53 public static void initHelper(ImageView imageView) { 54 setHelper(imageView, getInstance()); 55 } 56 57 @Override 58 protected NGNode createPeerImpl(Node node) { 59 return imageViewAccessor.doCreatePeer(node); 60 } 61 62 @Override 63 protected void updatePeerImpl(Node node) { 64 super.updatePeerImpl(node); 65 imageViewAccessor.doUpdatePeer(node); 66 } 67 68 @Override 69 protected BaseBounds computeGeomBoundsImpl(Node node, BaseBounds bounds, 70 BaseTransform tx) { 71 return imageViewAccessor.doComputeGeomBounds(node, bounds, tx); 72 } 73 74 @Override 75 protected boolean computeContainsImpl(Node node, double localX, double localY) { 76 return imageViewAccessor.doComputeContains(node, localX, localY); 77 } 78 79 public static void setImageViewAccessor(final ImageViewAccessor newAccessor) { 80 if (imageViewAccessor != null) { 81 throw new IllegalStateException(); 82 } 83 84 imageViewAccessor = newAccessor; 85 } 86 87 public interface ImageViewAccessor { 88 NGNode doCreatePeer(Node node); 89 void doUpdatePeer(Node node); 90 BaseBounds doComputeGeomBounds(Node node, BaseBounds bounds, BaseTransform tx); 91 boolean doComputeContains(Node node, double localX, double localY); 92 } 93 94 }