javafx.css.converter.DeriveSizeConverter Maven / Gradle / Ivy
/*
* Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package javafx.css.converter;
import javafx.css.Size;
import javafx.css.SizeUnits;
import javafx.css.StyleConverter;
import javafx.css.ParsedValue;
import javafx.scene.text.Font;
/**
* A type that combines two Size values. The primary purpose of
* this type is to handle "convert(size1, size2)" expressions in CSS.
*/
public final class DeriveSizeConverter extends StyleConverter[], Size> {
// lazy, thread-safe instatiation
private static class Holder {
static final DeriveSizeConverter INSTANCE = new DeriveSizeConverter();
}
public static DeriveSizeConverter getInstance() {
return Holder.INSTANCE;
}
private DeriveSizeConverter() {
super();
}
@Override
public Size convert(ParsedValue[], Size> value, Font font) {
final ParsedValue[] sizes = value.getValue();
final double px1 = sizes[0].convert(font).pixels(font);
final double px2 = sizes[1].convert(font).pixels(font);
return new Size(px1 + px2, SizeUnits.PX);
}
@Override
public String toString() {
return "DeriveSizeConverter";
}
}