1 /*
   2  * Copyright (c) 2011, 2014, 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.css.converters;
  27 
  28 import com.sun.javafx.css.Size;
  29 import com.sun.javafx.css.StyleConverterImpl;
  30 import javafx.css.ParsedValue;
  31 import javafx.css.StyleConverter;
  32 import javafx.scene.text.Font;
  33 
  34 /* Convert a Size to Number */
  35 public final class SizeConverter extends StyleConverterImpl<ParsedValue<?, Size>, Number> {
  36 
  37     // lazy, thread-safe instatiation
  38     private static class Holder {
  39         static final SizeConverter INSTANCE = new SizeConverter();
  40         static final SequenceConverter SEQUENCE_INSTANCE = new SequenceConverter();
  41     }
  42 
  43     public static StyleConverter<ParsedValue<?, Size>, Number> getInstance() {
  44         return Holder.INSTANCE;
  45     }
  46 
  47     private SizeConverter() {
  48         super();
  49     }
  50 
  51     @Override
  52     public Number convert(ParsedValue<ParsedValue<?, Size>, Number> value, Font font) {
  53         ParsedValue<?, Size> size = value.getValue();
  54         return size.convert(font).pixels(font);
  55     }
  56 
  57     @Override
  58     public String toString() {
  59         return "SizeConverter";
  60     }
  61 
  62     /*
  63      * Convert [<size>]+ to an array of Number[].
  64      */
  65     public static final class SequenceConverter extends StyleConverterImpl<ParsedValue[], Number[]> {
  66 
  67         public static SequenceConverter getInstance() {
  68             return Holder.SEQUENCE_INSTANCE;
  69         }
  70 
  71         private SequenceConverter() {
  72             super();
  73         }
  74 
  75         @Override
  76         public Number[] convert(ParsedValue<ParsedValue[], Number[]> value, Font font) {
  77             ParsedValue[] sizes = value.getValue();
  78             Number[] doubles = new Number[sizes.length];
  79             for (int i = 0; i < sizes.length; i++) {
  80                 doubles[i] = ((Size)sizes[i].convert(font)).pixels(font);
  81             }
  82             return doubles;
  83         }
  84 
  85         @Override
  86         public String toString() {
  87             return "Size.SequenceConverter";
  88         }
  89     }
  90 
  91 }