plantuml/src/net/sourceforge/plantuml/klimt/compress/PiecewiseAffineOnXorYBuilder.java

/* ========================================================================
 * PlantUML : a free UML diagram generator
 * ========================================================================
 *
 * (C) Copyright 2009-2024, Arnaud Roques
 *
 * Project Info:  https://plantuml.com
 * 
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 * 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
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 * 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.
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 * You should have received a copy of the GNU General Public
 * License along with this library; if not, write to the Free Software
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 * Original Author:  Arnaud Roques
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 */
package net.sourceforge.plantuml.klimt.compress;

import net.sourceforge.plantuml.klimt.color.HColor;
import net.sourceforge.plantuml.klimt.drawing.UGraphic;
import net.sourceforge.plantuml.klimt.font.StringBounder;
import net.sourceforge.plantuml.klimt.geom.MinMax;
import net.sourceforge.plantuml.klimt.geom.XDimension2D;
import net.sourceforge.plantuml.klimt.shape.AbstractTextBlock;
import net.sourceforge.plantuml.klimt.shape.TextBlock;
import net.sourceforge.plantuml.klimt.shape.TextBlockUtils;

public class PiecewiseAffineOnXorYBuilder extends AbstractTextBlock {

	private final TextBlock textBlock;
	private final CompressionMode mode;
	private final PiecewiseAffineTransform piecewiseAffineTransform;

	public static TextBlock build(CompressionMode mode, TextBlock textBlock,
			PiecewiseAffineTransform piecewiseAffineTransform) {
		return new PiecewiseAffineOnXorYBuilder(mode, textBlock, piecewiseAffineTransform);
	}

	private PiecewiseAffineOnXorYBuilder(CompressionMode mode, TextBlock textBlock,
			PiecewiseAffineTransform piecewiseAffineTransform) {
		this.textBlock = textBlock;
		this.mode = mode;
		this.piecewiseAffineTransform = piecewiseAffineTransform;
	}

	public void drawU(final UGraphic ug) {
		textBlock.drawU(UGraphicCompressOnXorY.create(mode, ug, piecewiseAffineTransform));
	}

	private MinMax cachedMinMax;

	@Override
	public MinMax getMinMax(StringBounder stringBounder) {
		if (cachedMinMax == null) {
			cachedMinMax = TextBlockUtils.getMinMax(this, stringBounder, false);
		}
		return cachedMinMax;
	}

	public XDimension2D calculateDimension(StringBounder stringBounder) {
		final XDimension2D dim = textBlock.calculateDimension(stringBounder);
		if (mode == CompressionMode.ON_X) {
			return new XDimension2D(piecewiseAffineTransform.transform(dim.getWidth()), dim.getHeight());
		} else {
			return new XDimension2D(dim.getWidth(), piecewiseAffineTransform.transform(dim.getHeight()));
		}
	}

	public HColor getBackcolor() {
		return null;
	}

}