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PlantUML is a component that allows to quickly write : * sequence diagram, * use case diagram, * class diagram, * activity diagram, * component diagram, * state diagram * object diagram

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/* ========================================================================
 * 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/paypal
 * 
 * This file is part of PlantUML.
 *
 * PlantUML is free software; you can redistribute it and/or modify it
 * under the terms of the GNU 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 General Public
 * License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 *
 * Original Author:  Arnaud Roques
 * 
 *
 */
package net.sourceforge.plantuml.logo;

import java.awt.Color;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;

import net.sourceforge.plantuml.AbstractPSystem;
import net.sourceforge.plantuml.EmptyImageBuilder;
import net.sourceforge.plantuml.FileFormat;
import net.sourceforge.plantuml.FileFormatOption;
import net.sourceforge.plantuml.api.ImageDataSimple;
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.HColors;
import net.sourceforge.plantuml.klimt.drawing.UGraphic;
import net.sourceforge.plantuml.klimt.drawing.g2d.UGraphicG2d;
import net.sourceforge.plantuml.klimt.font.StringBounder;
import net.sourceforge.plantuml.png.PngIO;

public class PSystemLogo extends AbstractPSystem {

	private final List lines = new ArrayList<>();

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

	@Override
	final protected ImageData exportDiagramNow(OutputStream os, int num, FileFormatOption fileFormat)
			throws IOException {
		final int width = 640;
		final int height = 480;
		final StringBounder stringBounder = FileFormat.PNG.getDefaultStringBounder();
		final EmptyImageBuilder builder = new EmptyImageBuilder(fileFormat.getWatermark(), width, height, Color.WHITE,
				stringBounder);
		final BufferedImage im = builder.getBufferedImage();
		final UGraphic ug = new UGraphicG2d(HColors.WHITE, ColorMapper.IDENTITY, stringBounder, builder.getGraphics2D(),
				1.0, FileFormat.PNG);
		((UGraphicG2d) ug).setBufferedImage(im);

		final TurtleGraphicsPane turtleGraphicsPane = new TurtleGraphicsPane(width, height);
		final TinyJavaLogo tinyJavaLogo = new TinyJavaLogo(turtleGraphicsPane);
		for (String line : lines) {
			tinyJavaLogo.doCommandLine(line);
		}
		turtleGraphicsPane.paint(ug);
		PngIO.write(im, ColorMapper.IDENTITY, os, null, 96);
		return new ImageDataSimple(im.getWidth(), im.getHeight());
	}

	// private GraphicStrings getGraphicStrings() throws IOException {
	// final UFont font = new UFont("SansSerif", Font.PLAIN, 12);
	// final GraphicStrings result = new GraphicStrings(strings, font,
	// HtmlColorUtils.BLACK, HtmlColorUtils.WHITE,
	// image,
	// GraphicPosition.BOTTOM, false);
	// result.setMinWidth(200);
	// return result;
	// }

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

	public void doCommandLine(String line) {
		lines.add(line);
	}

}