/* ======================================================================== * PlantUML : a free UML diagram generator * ======================================================================== * * (C) Copyright 2009-2023, Arnaud Roques * * Project Info:  http://plantuml.com *  * If you like this project or if you find it useful, you can support us at: *  * http://plantuml.com/patreon (only 1$ per month!) * http://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.timingdiagram;import java.awt.geom.Point2D;import java.util.List;import java.util.Objects;import net.sourceforge.plantuml.ISkinParam;import net.sourceforge.plantuml.UseStyle;import net.sourceforge.plantuml.awt.geom.Dimension2D;import net.sourceforge.plantuml.cucadiagram.Display;import net.sourceforge.plantuml.graphic.FontConfiguration;import net.sourceforge.plantuml.graphic.HorizontalAlignment;import net.sourceforge.plantuml.graphic.StringBounder;import net.sourceforge.plantuml.graphic.TextBlock;import net.sourceforge.plantuml.style.PName;import net.sourceforge.plantuml.style.SName;import net.sourceforge.plantuml.style.Style;import net.sourceforge.plantuml.style.StyleBuilder;import net.sourceforge.plantuml.style.StyleSignatureBasic;import net.sourceforge.plantuml.timingdiagram.graphic.TimeArrow;import net.sourceforge.plantuml.ugraphic.UFont;import net.sourceforge.plantuml.ugraphic.UGraphic;import net.sourceforge.plantuml.ugraphic.ULine;import net.sourceforge.plantuml.ugraphic.UPolygon;import net.sourceforge.plantuml.ugraphic.UStroke;import net.sourceforge.plantuml.ugraphic.UTranslate;import net.sourceforge.plantuml.ugraphic.color.HColor;import net.sourceforge.plantuml.ugraphic.color.HColorUtils;public class TimeConstraint {	private final TimeTick tick1;	private final TimeTick tick2;	private final Display label;	private final ISkinParam skinParam;	private final StyleBuilder styleBuilder;	public TimeConstraint(TimeTick tick1, TimeTick tick2, String label, ISkinParam skinParam) {		this.tick1 = Objects.requireNonNull(tick1);		this.tick2 = Objects.requireNonNull(tick2);		this.label = Display.getWithNewlines(label);		this.skinParam = skinParam;		this.styleBuilder = skinParam.getCurrentStyleBuilder();	}	public final boolean containsStrict(TimeTick other) {		return tick1.compareTo(other) < 0 && tick2.compareTo(other) > 0;	}	public final TimeTick getTick1() {		return tick1;	}	public final TimeTick getTick2() {		return tick2;	}	public final Display getLabel() {		return label;	}	private TextBlock getTextBlock(Display display) {		return display.create(getFontConfiguration(), HorizontalAlignment.LEFT, skinParam);	}	private FontConfiguration getFontConfiguration() {		if (UseStyle.useBetaStyle() == false) {			final UFont font = UFont.serif(14);			return FontConfiguration.create(font, HColorUtils.BLACK, HColorUtils.BLUE, false);		}		return getStyle().getFontConfiguration(skinParam.getThemeStyle(), skinParam.getIHtmlColorSet());	}	public void drawU(UGraphic ug, TimingRuler ruler) {		final HColor arrowColor = getArrowColor();		ug = ug.apply(arrowColor).apply(arrowColor.bg());		final double x1 = ruler.getPosInPixel(tick1);		final double x2 = ruler.getPosInPixel(tick2);		ug = ug.apply(UTranslate.dx(x1));		ug.apply(getUStroke()).draw(ULine.hline(x2 - x1));		ug.draw(getPolygon(-Math.PI / 2, new Point2D.Double(0, 0)));		ug.draw(getPolygon(Math.PI / 2, new Point2D.Double(x2 - x1, 0)));		final TextBlock text = getTextBlock(label);		final Dimension2D dimText = text.calculateDimension(ug.getStringBounder());		final double x = (x2 - x1 - dimText.getWidth()) / 2;		text.drawU(ug.apply(new UTranslate(x, -getConstraintHeight(ug.getStringBounder()))));	}	private HColor getArrowColor() {		if (UseStyle.useBetaStyle() == false)			return HColorUtils.MY_RED;		return getStyle().value(PName.LineColor).asColor(skinParam.getThemeStyle(), skinParam.getIHtmlColorSet());	}	private Style getStyle() {		return getStyleSignature().getMergedStyle(styleBuilder);	}	private UStroke getUStroke() {		if (UseStyle.useBetaStyle() == false)			return new UStroke(1.5);		return getStyle().getStroke();	}	private StyleSignatureBasic getStyleSignature() {		return StyleSignatureBasic.of(SName.root, SName.element, SName.timingDiagram, SName.constraintArrow);	}	public double getConstraintHeight(StringBounder stringBounder) {		final TextBlock text = getTextBlock(label);		final Dimension2D dimText = text.calculateDimension(stringBounder);		return dimText.getHeight() + getTopMargin();	}	public static double getTopMargin() {		return 5;	}	private UPolygon getPolygon(final double angle, final Point2D end) {		final double delta = 20.0 * Math.PI / 180.0;		final Point2D pt1 = TimeArrow.onCircle(end, angle + delta);		final Point2D pt2 = TimeArrow.onCircle(end, angle - delta);		final UPolygon polygon = new UPolygon();		polygon.addPoint(pt1.getX(), pt1.getY());		polygon.addPoint(pt2.getX(), pt2.getY());		polygon.addPoint(end.getX(), end.getY());		return polygon;	}	public static double getHeightForConstraints(StringBounder stringBounder, List<TimeConstraint> constraints) {		if (constraints.size() == 0)			return 0;		double result = 0;		for (TimeConstraint constraint : constraints)			result = Math.max(result, constraint.getConstraintHeight(stringBounder));		return result;	}}