1 /*
   2  * Copyright (c) 2013, 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.PickRay;
  30 import com.sun.javafx.geom.transform.BaseTransform;
  31 import com.sun.javafx.jmx.MXNodeAlgorithm;
  32 import com.sun.javafx.jmx.MXNodeAlgorithmContext;
  33 import com.sun.javafx.scene.input.PickResultChooser;
  34 import com.sun.javafx.sg.prism.NGNode;
  35 import com.sun.javafx.util.Utils;
  36 import javafx.scene.Camera;
  37 import javafx.scene.Node;
  38 import javafx.scene.SubScene;
  39 
  40 /**
  41  * Used to access internal methods of SubScene.
  42  */
  43 public class SubSceneHelper extends NodeHelper {
  44 
  45     private static final SubSceneHelper theInstance;
  46     private static SubSceneAccessor subSceneAccessor;
  47 
  48     static {
  49         theInstance = new SubSceneHelper();
  50         Utils.forceInit(SubScene.class);
  51     }
  52 
  53     private static SubSceneHelper getInstance() {
  54         return theInstance;
  55     }
  56 
  57     public static void initHelper(SubScene subScene) {
  58         setHelper(subScene, getInstance());
  59     }
  60 
  61     public static void superProcessCSS(Node node) {
  62         ((SubSceneHelper) getHelper(node)).superProcessCSSImpl(node);
  63     }
  64 
  65     @Override
  66     protected NGNode createPeerImpl(Node node) {
  67         return subSceneAccessor.doCreatePeer(node);
  68     }
  69 
  70     @Override
  71     protected void updatePeerImpl(Node node) {
  72         super.updatePeerImpl(node);
  73         subSceneAccessor.doUpdatePeer(node);
  74     }
  75 
  76     @Override
  77     protected BaseBounds computeGeomBoundsImpl(Node node, BaseBounds bounds,
  78             BaseTransform tx) {
  79         return subSceneAccessor.doComputeGeomBounds(node, bounds, tx);
  80     }
  81 
  82     @Override
  83     protected boolean computeContainsImpl(Node node, double localX, double localY) {
  84         return subSceneAccessor.doComputeContains(node, localX, localY);
  85     }
  86 
  87     void superProcessCSSImpl(Node node) {
  88         super.processCSSImpl(node);
  89     }
  90 
  91     protected void processCSSImpl(Node node) {
  92         subSceneAccessor.doProcessCSS(node);
  93     }
  94 
  95     @Override
  96     protected Object processMXNodeImpl(Node node, MXNodeAlgorithm alg, MXNodeAlgorithmContext ctx) {
  97         return subSceneAccessor.doProcessMXNode(node, alg, ctx);
  98     }
  99 
 100     @Override
 101     protected void pickNodeLocalImpl(Node node, PickRay localPickRay,
 102             PickResultChooser result) {
 103         subSceneAccessor.doPickNodeLocal(node, localPickRay, result);
 104     }
 105 
 106     public static boolean isDepthBuffer(SubScene subScene) {
 107         return subSceneAccessor.isDepthBuffer(subScene);
 108     }
 109 
 110     public static Camera getEffectiveCamera(SubScene subScene) {
 111         return subSceneAccessor.getEffectiveCamera(subScene);
 112     }
 113 
 114     public static void setSubSceneAccessor(final SubSceneAccessor newAccessor) {
 115         if (subSceneAccessor != null) {
 116             throw new IllegalStateException();
 117         }
 118 
 119         subSceneAccessor = newAccessor;
 120     }
 121 
 122     public interface SubSceneAccessor {
 123         NGNode doCreatePeer(Node node);
 124         void doUpdatePeer(Node node);
 125         BaseBounds doComputeGeomBounds(Node node, BaseBounds bounds, BaseTransform tx);
 126         boolean doComputeContains(Node node, double localX, double localY);
 127         void doProcessCSS(Node node);
 128         Object doProcessMXNode(Node node, MXNodeAlgorithm alg, MXNodeAlgorithmContext ctx);
 129         void doPickNodeLocal(Node node, PickRay localPickRay,
 130             PickResultChooser result);
 131         boolean isDepthBuffer(SubScene subScene);
 132         Camera getEffectiveCamera(SubScene subScene);
 133     }
 134 
 135 }