1 /* 2 * Copyright (c) 2016, 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 com.sun.javafx.jmx.MXNodeAlgorithm; 31 import com.sun.javafx.jmx.MXNodeAlgorithmContext; 32 import static com.sun.javafx.scene.NodeHelper.setHelper; 33 import com.sun.javafx.sg.prism.NGNode; 34 import com.sun.javafx.util.Utils; 35 import javafx.scene.Node; 36 import javafx.scene.image.ImageView; 37 38 /** 39 * Used to access internal methods of ImageView. 40 */ 41 public class ImageViewHelper extends NodeHelper { 42 43 private static final ImageViewHelper theInstance; 44 private static ImageViewAccessor imageViewAccessor; 45 46 static { 47 theInstance = new ImageViewHelper(); 48 Utils.forceInit(ImageView.class); 49 } 50 51 private static ImageViewHelper getInstance() { 52 return theInstance; 53 } 54 55 public static void initHelper(ImageView imageView) { 56 setHelper(imageView, getInstance()); 57 } 58 59 @Override 60 protected NGNode createPeerImpl(Node node) { 61 return imageViewAccessor.doCreatePeer(node); 62 } 63 64 @Override 65 protected void updatePeerImpl(Node node) { 66 super.updatePeerImpl(node); 67 imageViewAccessor.doUpdatePeer(node); 68 } 69 70 @Override 71 protected BaseBounds computeGeomBoundsImpl(Node node, BaseBounds bounds, 72 BaseTransform tx) { 73 return imageViewAccessor.doComputeGeomBounds(node, bounds, tx); 74 } 75 76 @Override 77 protected boolean computeContainsImpl(Node node, double localX, double localY) { 78 return imageViewAccessor.doComputeContains(node, localX, localY); 79 } 80 81 @Override 82 protected Object processMXNodeImpl(Node node, MXNodeAlgorithm alg, MXNodeAlgorithmContext ctx) { 83 return imageViewAccessor.doProcessMXNode(node, alg, ctx); 84 } 85 86 public static void setImageViewAccessor(final ImageViewAccessor newAccessor) { 87 if (imageViewAccessor != null) { 88 throw new IllegalStateException(); 89 } 90 91 imageViewAccessor = newAccessor; 92 } 93 94 public interface ImageViewAccessor { 95 NGNode doCreatePeer(Node node); 96 void doUpdatePeer(Node node); 97 BaseBounds doComputeGeomBounds(Node node, BaseBounds bounds, BaseTransform tx); 98 boolean doComputeContains(Node node, double localX, double localY); 99 Object doProcessMXNode(Node node, MXNodeAlgorithm alg, MXNodeAlgorithmContext ctx); 100 } 101 102 }