StringBounderTikz.java

/* ========================================================================
 * PlantUML : a free UML diagram generator
 * ========================================================================
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 * (C) Copyright 2009-2025, Arnaud Roques
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 * Original Author:  Arnaud Roques
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package net.sourceforge.plantuml;

import net.sourceforge.plantuml.klimt.font.StringBounder;
import net.sourceforge.plantuml.klimt.font.UFont;
import net.sourceforge.plantuml.klimt.geom.XDimension2D;

public class StringBounderTikz implements StringBounder {

	private final LatexManager latexManager;
	private final FileFormat fileFormat;

	protected StringBounderTikz(TikzFontDistortion tikzFontDistortion, FileFormat latexManager) {
		this.fileFormat = latexManager;
		this.latexManager = new LatexManager(tikzFontDistortion.getTexSystem(), tikzFontDistortion.getTexPreamble());
	}

	@Override
	public FileFormat getFileFormat() {
		return fileFormat;
	}

	@Override
	public XDimension2D calculateDimension(UFont font, String text) {
		final double[] widthHeightDepth = latexManager.getWidthHeightDepth(styleText(font, text));
		double height = widthHeightDepth[1] + widthHeightDepth[2];
		if (height == 0.0 && text.trim().isEmpty()) {
			// avoid return 0 height for space, otherwise cause exception, case in #1259
			height = latexManager.getWidthHeightDepth(styleText(font, " "))[0];
		}
		return new XDimension2D(widthHeightDepth[0], height);
	}

	@Override
	public boolean matchesProperty(String propertyName) {
		return "TIKZ".equalsIgnoreCase(propertyName);
	}

	@Override
	public double getDescent(UFont font, String text) {
		final double[] widthHeightDepth = latexManager.getWidthHeightDepth(styleText(font, text));
		return widthHeightDepth[2];
	}

	protected String styleText(UFont font, String text) {
		if (font == null)
			return "$" + text + "$";

		final StringBuilder sb = new StringBuilder();
		final boolean italic = font.getFontFace().isItalic();
		final boolean bold = font.getFontFace().isBold();

		if (italic)
			sb.append("\\textit{");

		if (bold)
			sb.append("\\textbf{");

		sb.append(LatexManager.protectText(text));
		if (bold)
			sb.append("}");

		if (italic)
			sb.append("}");

		return sb.toString();
	}

}