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.web;
  27 
  28 import com.sun.javafx.geom.BaseBounds;
  29 import com.sun.javafx.geom.transform.BaseTransform;
  30 import com.sun.javafx.scene.NodeHelper;
  31 import com.sun.javafx.sg.prism.NGNode;
  32 import com.sun.javafx.util.Utils;
  33 import javafx.scene.Node;
  34 
  35 public class PrintableHelper extends NodeHelper {
  36 
  37     private static final PrintableHelper theInstance;
  38     private static PrintableAccessor printableAccessor;
  39 
  40     static {
  41         theInstance = new PrintableHelper();
  42         Utils.forceInit(Printable.class);
  43     }
  44 
  45     private static PrintableHelper getInstance() {
  46         return theInstance;
  47     }
  48 
  49     public static void initHelper(Printable printable) {
  50         setHelper(printable, getInstance());
  51     }
  52 
  53     public static void setPrintableAccessor(final PrintableAccessor newAccessor) {
  54         if (printableAccessor != null) {
  55             throw new IllegalStateException();
  56         }
  57 
  58         printableAccessor = newAccessor;
  59     }
  60 
  61     @Override
  62     protected NGNode createPeerImpl(Node node) {
  63         return printableAccessor.doCreatePeer(node);
  64     }
  65 
  66     @Override
  67     protected BaseBounds computeGeomBoundsImpl(Node node, BaseBounds bounds,
  68             BaseTransform tx) {
  69         return printableAccessor.doComputeGeomBounds(node, bounds, tx);
  70     }
  71 
  72     @Override
  73     protected boolean computeContainsImpl(Node node, double localX, double localY) {
  74         return printableAccessor.doComputeContains(node, localX, localY);
  75     }
  76 
  77     public interface PrintableAccessor {
  78         NGNode doCreatePeer(Node node);
  79         BaseBounds doComputeGeomBounds(Node node, BaseBounds bounds, BaseTransform tx);
  80         boolean doComputeContains(Node node, double localX, double localY);
  81     }
  82 
  83 }
  84