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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:
 *
 * https://plantuml.com/patreon (only 1$ per month!)
 * https://plantuml.com/liberapay (only 1€ per month!)
 * https://plantuml.com/paypal
 *
 *
 * 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
 * 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
 * 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.klimt.shape;

import java.util.StringTokenizer;

import net.sourceforge.plantuml.klimt.UTranslate;
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.url.Url;
import net.sourceforge.plantuml.utils.Log;

public class TileText extends AbstractTextBlock implements TextBlock {
    // ::remove file when __HAXE__

	private final String text;
	private final FontConfiguration fontConfiguration;
	private final Url url;

	public TileText(String text, FontConfiguration fontConfiguration, Url url) {
		this.fontConfiguration = fontConfiguration;
		this.text = text;
		this.url = url;
	}

	public XDimension2D calculateDimension(StringBounder stringBounder) {
		final XDimension2D rect = stringBounder.calculateDimension(fontConfiguration.getFont(), text);
		final int spaceBottom = Math.abs(fontConfiguration.getSpace());
		Log.debug("g2d=" + rect);
		Log.debug("Size for " + text + " is " + rect);
		double h = rect.getHeight();
		if (h < 10) {
			h = 10;
		}
		final double width = text.indexOf('\t') == -1 ? rect.getWidth() : getWidth(stringBounder);
		return new XDimension2D(width, h + spaceBottom);
	}

	public double getFontSize2D() {
		return fontConfiguration.getFont().getSize2D();
	}

	double getTabSize(StringBounder stringBounder) {
		return stringBounder.calculateDimension(fontConfiguration.getFont(), "        ").getWidth();
	}

	public void drawU(UGraphic ug) {
		double x = 0;
		if (url != null) {
			ug.startUrl(url);
		}
		ug = ug.apply(fontConfiguration.getColor());

		final StringTokenizer tokenizer = new StringTokenizer(text, "\t", true);

		if (tokenizer.hasMoreTokens()) {
			final double tabSize = getTabSize(ug.getStringBounder());
			while (tokenizer.hasMoreTokens()) {
				final String s = tokenizer.nextToken();
				if (s.equals("\t")) {
					final double remainder = x % tabSize;
					x += tabSize - remainder;
				} else {
					final UText utext = UText.build(s, fontConfiguration);
					final XDimension2D dim = ug.getStringBounder().calculateDimension(fontConfiguration.getFont(), s);
					final int space = fontConfiguration.getSpace();
					final double ypos;
					if (space < 0) {
						ypos = space /*- getFontSize2D() - space*/;
					} else {
						ypos = space;
					}
					ug.apply(new UTranslate(x, ypos)).draw(utext);
					x += dim.getWidth();
				}
			}
		}
		if (url != null) {
			ug.closeUrl();
		}
	}

	double getWidth(StringBounder stringBounder) {
		final StringTokenizer tokenizer = new StringTokenizer(text, "\t", true);
		final double tabSize = getTabSize(stringBounder);
		double x = 0;
		while (tokenizer.hasMoreTokens()) {
			final String s = tokenizer.nextToken();
			if (s.equals("\t")) {
				final double remainder = x % tabSize;
				x += tabSize - remainder;
			} else {
				final XDimension2D dim = stringBounder.calculateDimension(fontConfiguration.getFont(), s);
				x += dim.getWidth();
			}
		}
		return x;
	}

}