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PlantUML is a component that allows to quickly write diagrams from text.

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// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
/* +=======================================================================
 * |
 * |      PlantUML : a free UML diagram generator
 * |
 * +=======================================================================
 *
 * (C) Copyright 2009-2024, Arnaud Roques
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 * 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 V2.
 *
 * THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS ECLIPSE PUBLIC
 * LICENSE ("AGREEMENT"). [GNU General Public License V2]
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 * ANY USE, REPRODUCTION OR DISTRIBUTION OF THE PROGRAM CONSTITUTES
 * RECIPIENT'S ACCEPTANCE OF THIS AGREEMENT.
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 * You may obtain a copy of the License at
 *
 * https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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 * See the License for the specific language governing permissions and
 * limitations under the License.
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 * 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
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 * 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 GPL v2 license.
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 * The generated images can then be used without any reference to the GPL v2 license.
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 * although this will be appreciated by the PlantUML team.
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 * 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
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 * 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
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 *
 */
package net.sourceforge.plantuml.salt.element;

import java.util.List;

import net.sourceforge.plantuml.klimt.UStroke;
import net.sourceforge.plantuml.klimt.UTranslate;
import net.sourceforge.plantuml.klimt.color.HColors;
import net.sourceforge.plantuml.klimt.creole.Display;
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.font.UFont;
import net.sourceforge.plantuml.klimt.geom.HorizontalAlignment;
import net.sourceforge.plantuml.klimt.geom.XDimension2D;
import net.sourceforge.plantuml.klimt.shape.TextBlock;
import net.sourceforge.plantuml.klimt.shape.UEllipse;
import net.sourceforge.plantuml.klimt.shape.UPolygon;
import net.sourceforge.plantuml.klimt.shape.URectangle;
import net.sourceforge.plantuml.style.ISkinSimple;

public class ElementRadioCheckbox extends AbstractElement {

	private static final int RECTANGLE = 10;
	private static final int ELLIPSE = 10;
	private static final int ELLIPSE2 = 4;
	private final TextBlock block;
	private final int margin = 20;
	private final double stroke = 1.5;
	private final boolean radio;
	private final boolean checked;

	public ElementRadioCheckbox(List text, UFont font, boolean radio, boolean checked,
			ISkinSimple spriteContainer) {
		final FontConfiguration config = FontConfiguration.blackBlueTrue(font);
		this.block = Display.create(text).create(config, HorizontalAlignment.LEFT, spriteContainer);
		this.radio = radio;
		this.checked = checked;
	}

	public XDimension2D getPreferredDimension(StringBounder stringBounder, double x, double y) {
		final XDimension2D dim = block.calculateDimension(stringBounder);
		return dim.delta(margin, 0);
	}

	public void drawU(UGraphic ug, int zIndex, XDimension2D dimToUse) {
		if (zIndex != 0)
			return;

		ug = ug.apply(getBlack());
		block.drawU(ug.apply(UTranslate.dx(margin)));

		final XDimension2D dim = getPreferredDimension(ug.getStringBounder(), 0, 0);
		final double height = dim.getHeight();

		ug = ug.apply(UStroke.withThickness(stroke));
		if (radio) {
			drawRadio(ug, height);
		} else {
			drawOther(ug, height);
		}
	}

	private void drawOther(UGraphic ug, final double height) {
		ug.apply(new UTranslate(2, (height - RECTANGLE) / 2)).draw(URectangle.build(RECTANGLE, RECTANGLE));
		if (checked) {
			final UPolygon poly = new UPolygon();
			poly.addPoint(0, 0);
			poly.addPoint(3, 3);
			poly.addPoint(10, -6);
			poly.addPoint(3, 1);
			ug = ug.apply(HColors.changeBack(ug));
			ug = ug.apply(new UTranslate(3, 6));
			ug.draw(poly);
		}
	}

	private void drawRadio(UGraphic ug, final double height) {
		ug.apply(new UTranslate(2, (height - ELLIPSE) / 2)).draw(UEllipse.build(ELLIPSE, ELLIPSE));
		if (checked) {
			ug = ug.apply(HColors.changeBack(ug));
			ug = ug.apply(new UTranslate(2 + (ELLIPSE - ELLIPSE2) / 2, (height - ELLIPSE2) / 2));
			ug.draw(UEllipse.build(ELLIPSE2, ELLIPSE2));
		}
	}
}




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