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PlantUML is a component that allows to quickly write diagrams from text.
There is a newer version: 1.2024.8
// 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:
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 * PlantUML is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * PlantUML 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 Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library.  If not, see .
 *
 * 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 LGPL license.
 *
 * The generated images can then be used without any reference to the LGPL 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
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 * 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
 * Stdlib Icons provided https://github.com/tupadr3/plantuml-icon-font-sprites
 * 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.activitydiagram3.gtile;

import java.util.Collection;
import java.util.Collections;

import net.sourceforge.plantuml.activitydiagram3.LinkRendering;
import net.sourceforge.plantuml.klimt.UTranslate;
import net.sourceforge.plantuml.klimt.creole.CreoleMode;
import net.sourceforge.plantuml.klimt.creole.Display;
import net.sourceforge.plantuml.klimt.font.FontConfiguration;
import net.sourceforge.plantuml.klimt.font.StringBounder;
import net.sourceforge.plantuml.klimt.geom.HorizontalAlignment;
import net.sourceforge.plantuml.klimt.geom.XDimension2D;
import net.sourceforge.plantuml.klimt.shape.TextBlock;
import net.sourceforge.plantuml.klimt.shape.TextBlockUtils;
import net.sourceforge.plantuml.style.SName;
import net.sourceforge.plantuml.style.Style;
import net.sourceforge.plantuml.style.StyleSignatureBasic;

public class GtileAssembly extends GtileTopDown {

	private final TextBlock textBlock;

	public GtileAssembly(Gtile tile1, Gtile tile2, LinkRendering linkRendering) {
		super(tile1, tile2);
		this.textBlock = getTextBlock(linkRendering.getDisplay());
		// See FtileFactoryDelegatorAssembly
	}

	@Override
	protected UTranslate supplementaryMove() {
		final double height = 30 + textBlock.calculateDimension(stringBounder).getHeight();
		return new UTranslate(0, height);
	}

	final public StyleSignatureBasic getDefaultStyleDefinitionArrow() {
		return StyleSignatureBasic.of(SName.root, SName.element, SName.activityDiagram, SName.arrow);
	}

	@Override
	public XDimension2D calculateDimension(StringBounder stringBounder) {
		final XDimension2D raw = super.calculateDimension(stringBounder);
		final double textBlockWidth = textBlock.calculateDimension(stringBounder).getWidth();
		final double pos1 = tile1.getCoord(GPoint.SOUTH_HOOK).compose(getPos1()).getDx();
		return raw.atLeast(pos1 + textBlockWidth, 0);
	}

	protected final TextBlock getTextBlock(Display display) {
		// DUP3945
		if (Display.isNull(display))
			return TextBlockUtils.EMPTY_TEXT_BLOCK;

		final Style style = getDefaultStyleDefinitionArrow().getMergedStyle(skinParam().getCurrentStyleBuilder());
		final FontConfiguration fontConfiguration = style.getFontConfiguration(skinParam().getIHtmlColorSet());
		return display.create7(fontConfiguration, HorizontalAlignment.LEFT, skinParam(), CreoleMode.SIMPLE_LINE);
	}

	@Override
	public Collection getInnerConnections() {
		final GConnection arrow = new GConnectionVerticalDown(getPos1(), tile1.getGPoint(GPoint.SOUTH_HOOK), getPos2(),
				tile2.getGPoint(GPoint.NORTH_HOOK), textBlock);
		return Collections.singletonList(arrow);
	}

}