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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.
package net.sourceforge.plantuml.math;

import java.awt.Color;
import java.io.IOException;
import java.io.OutputStream;

import net.sourceforge.plantuml.AbstractPSystem;
import net.sourceforge.plantuml.FileFormatOption;
import net.sourceforge.plantuml.StringUtils;
import net.sourceforge.plantuml.core.DiagramDescription;
import net.sourceforge.plantuml.core.ImageData;
import net.sourceforge.plantuml.core.UmlSource;
import net.sourceforge.plantuml.klimt.color.ColorMapper;
import net.sourceforge.plantuml.klimt.color.HColor;
import net.sourceforge.plantuml.klimt.color.HColorSet;
import net.sourceforge.plantuml.log.Logme;

public class PSystemMath extends AbstractPSystem {
    // ::remove folder when __HAXE__

	private String math = "";
	private float scale = 1;
	private Color color = Color.BLACK;
	private Color backColor = Color.WHITE;

	public PSystemMath(UmlSource source) {
		super(source);
	}

	public DiagramDescription getDescription() {
		return new DiagramDescription("(Math)");
	}

	@Override
	final protected ImageData exportDiagramNow(OutputStream os, int num, FileFormatOption fileFormat)
			throws IOException {
		final ScientificEquationSafe asciiMath = ScientificEquationSafe.fromAsciiMath(math);
		return asciiMath.export(os, fileFormat, scale, color, backColor);
	}

	public void doCommandLine(String line) {
		final String lineLower = StringUtils.trin(StringUtils.goLowerCase(line));
		final String colorParam = "color ";
		final String backParam = "backgroundcolor ";
		if (lineLower.startsWith(colorParam)) {
			final Color col3 = getColor(line.substring(colorParam.length()));
			if (col3 != null) {
				color = col3;
			}
		} else if (lineLower.startsWith(backParam)) {
			final Color col3 = getColor(line.substring(backParam.length()));
			if (col3 != null) {
				backColor = col3;
			}
		} else if (lineLower.startsWith("scale ")) {
			final String value = line.substring("scale ".length());
			try {
				final float scale1 = Float.parseFloat(value);
				if (scale1 > 0) {
					scale = scale1;
				}
			} catch (Exception e) {
				Logme.error(e);
			}
		} else if (lineLower.startsWith("dpi ")) {
			final String value = line.substring("dpi ".length());
			try {
				final float dpi1 = Float.parseFloat(value);
				if (dpi1 > 0) {
					scale = dpi1 / 96;
				}
			} catch (Exception e) {
				Logme.error(e);
			}
		} else {
			this.math = line;

		}
	}

	private Color getColor(final String col) {
		final HColor col2 = col == null ? null : HColorSet.instance().getColorOrWhite(col);
		final Color col3 = col2.toColor(ColorMapper.IDENTITY);
		return col3;
	}

}