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PlantUML is a component that allows to quickly write diagrams from text.
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// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
/* +=======================================================================
 * |
 * |      PlantUML : a free UML diagram generator
 * |
 * +=======================================================================
 *
 * (C) Copyright 2009-2024, Arnaud Roques
 *
 * Project Info:  https://plantuml.com
 *
 * If you like this project or if you find it useful, you can support us at:
 *
 * https://plantuml.com/patreon (only 1$ per month!)
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 *
 *
 * PlantUML is free software; you can redistribute it and/or modify it
 * under the terms of the Apache Software License.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * PlantUML can occasionally display sponsored or advertising messages. Those
 * messages are usually generated on welcome or error images and never on
 * functional diagrams.
 * See https://plantuml.com/professional if you want to remove them
 *
 * Images (whatever their format : PNG, SVG, EPS...) generated by running PlantUML
 * are owned by the author of their corresponding sources code (that is, their
 * textual description in PlantUML language). Those images are not covered by
 * this APACHE license.
 *
 * The generated images can then be used without any reference to the APACHE license.
 * It is not even necessary to stipulate that they have been generated with PlantUML,
 * although this will be appreciated by the PlantUML team.
 *
 * There is an exception : if the textual description in PlantUML language is also covered
 * by any license, then the generated images are logically covered
 * by the very same license.
 *
 * This is the IGY distribution (Install GraphViz by Yourself).
 * You have to install GraphViz and to setup the GRAPHVIZ_DOT environment variable
 * (see https://plantuml.com/graphviz-dot )
 *
 * Icons provided by OpenIconic :  https://useiconic.com/open
 * Archimate sprites provided by Archi :  http://www.archimatetool.com
 * Stdlib AWS provided by https://github.com/milo-minderbinder/AWS-PlantUML
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 * ASCIIMathML (c) Peter Jipsen http://www.chapman.edu/~jipsen
 * ASCIIMathML (c) David Lippman http://www.pierce.ctc.edu/dlippman
 * CafeUndZopfli ported by Eugene Klyuchnikov https://github.com/eustas/CafeUndZopfli
 * Brotli (c) by the Brotli Authors https://github.com/google/brotli
 * Themes (c) by Brett Schwarz https://github.com/bschwarz/puml-themes
 * Twemoji (c) by Twitter at https://twemoji.twitter.com/
 *
 */
package net.sourceforge.plantuml.ebnf;

import java.util.List;

import net.sourceforge.plantuml.klimt.UStroke;
import net.sourceforge.plantuml.klimt.UTranslate;
import net.sourceforge.plantuml.klimt.color.HColor;
import net.sourceforge.plantuml.klimt.color.HColorSet;
import net.sourceforge.plantuml.klimt.drawing.UGraphic;
import net.sourceforge.plantuml.klimt.font.FontConfiguration;
import net.sourceforge.plantuml.klimt.font.StringBounder;
import net.sourceforge.plantuml.klimt.geom.XDimension2D;
import net.sourceforge.plantuml.klimt.shape.URectangle;
import net.sourceforge.plantuml.klimt.shape.UText;
import net.sourceforge.plantuml.style.ISkinParam;
import net.sourceforge.plantuml.style.PName;
import net.sourceforge.plantuml.style.Style;

public class ETileRegexGroup extends ETile {

	private final List elements;
	private final FontConfiguration fc;
	private final Style style;
	private final HColorSet colorSet;
	private final ISkinParam skinParam;

	public ETileRegexGroup(List elements, FontConfiguration fc, Style style, HColorSet colorSet,
			ISkinParam skinParam) {
		this.skinParam = skinParam;
		this.elements = elements;
		this.fc = fc;
		this.style = style;
		this.colorSet = colorSet;
	}

	private double getPureH1(StringBounder stringBounder) {
		final double height = getTextDim(stringBounder).getHeight();
		return height / 2;
	}

	@Override
	public double getH1(StringBounder stringBounder) {
		return getPureH1(stringBounder);
	}

	@Override
	public double getH2(StringBounder stringBounder) {
		return getPureH1(stringBounder);
	}

	@Override
	public double getWidth(StringBounder stringBounder) {
		return getTextDim(stringBounder).getWidth() + 10;
	}

	private XDimension2D getTextDim(StringBounder stringBounder) {
		double width = 0;
		double height = 0;
		for (String element : elements) {
			final XDimension2D dim = stringBounder.calculateDimension(fc.getFont(), element);
			width = Math.max(width, dim.getWidth());
			height += dim.getHeight();
		}
		return new XDimension2D(width, height);
	}

	private XDimension2D getBoxDim(StringBounder stringBounder) {
		return getTextDim(stringBounder).delta(10, 0);
	}

	@Override
	public void drawU(UGraphic ug) {
		final StringBounder stringBounder = ug.getStringBounder();
		final XDimension2D dim = calculateDimension(stringBounder);
		final XDimension2D dimText = getTextDim(stringBounder);
		final XDimension2D dimBox = getBoxDim(stringBounder);
		final HColor lineColor = style.value(PName.LineColor).asColor(colorSet);
		final HColor backgroundColor = style.value(PName.BackGroundColor).asColor(colorSet);

		final double posxBox = (dim.getWidth() - dimBox.getWidth()) / 2;

		final URectangle rect = URectangle.build(dimBox);
		ug.apply(new UTranslate(posxBox, 0)).apply(lineColor).apply(new UStroke(5, 5, 1)).draw(rect);

		double y = 0;
		for (String element : elements) {
			final UText utext = UText.build(element, fc);
			final XDimension2D dimElement = utext.calculateDimension(stringBounder);

			ug.apply(new UTranslate(5 + posxBox, y + dimElement.getHeight() - utext.getDescent(stringBounder)))
					.draw(utext);
			if (y > 0)
				drawHline(ug.apply(UStroke.withThickness(0.3)), y, 0, dimBox.getWidth());
			y += dimElement.getHeight();
		}

		if (posxBox > 0) {
			drawHlineDirected(ug, getH1(stringBounder), 0, posxBox, .5, 25);
			drawHlineDirected(ug, getH1(stringBounder), posxBox + dimBox.getWidth(), dim.getWidth(), .5, 25);
		}

	}

	@Override
	public void push(ETile tile) {
		throw new UnsupportedOperationException();
	}

}