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228 lines
7.5 KiB
Java
228 lines
7.5 KiB
Java
/* ========================================================================
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* PlantUML : a free UML diagram generator
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* ========================================================================
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*
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* (C) Copyright 2009-2023, Arnaud Roques
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*
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* Project Info: http://plantuml.com
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*
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* If you like this project or if you find it useful, you can support us at:
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*
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* http://plantuml.com/patreon (only 1$ per month!)
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* http://plantuml.com/paypal
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*
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* This file is part of PlantUML.
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*
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* PlantUML is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* PlantUML distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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* License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*
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*
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* Original Author: Arnaud Roques
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*
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*
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*/
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package net.sourceforge.plantuml.elk;
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import java.awt.geom.Point2D;
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import java.util.Collection;
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import java.util.List;
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import net.sourceforge.plantuml.ISkinParam;
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import net.sourceforge.plantuml.LineParam;
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import net.sourceforge.plantuml.cucadiagram.CucaDiagram;
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import net.sourceforge.plantuml.cucadiagram.Link;
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import net.sourceforge.plantuml.cucadiagram.LinkDecor;
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import net.sourceforge.plantuml.cucadiagram.LinkType;
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/*
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* You can choose between real "org.eclipse.elk..." classes or proxied "net.sourceforge.plantuml.elk.proxy..."
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*
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* Using proxied classes allows to compile PlantUML without having ELK available on the classpath.
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* Since GraphViz is the default layout engine up to now, we do not want to enforce the use of ELK just for compilation.
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* (for people not using maven)
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*
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* If you are debugging, you should probably switch to "org.eclipse.elk..." classes
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*
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*/
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/*
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import org.eclipse.elk.graph.ElkBendPoint;
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import org.eclipse.elk.graph.ElkEdge;
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import org.eclipse.elk.graph.ElkEdgeSection;
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import org.eclipse.elk.graph.ElkLabel;
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*/
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import net.sourceforge.plantuml.elk.proxy.graph.ElkBendPoint;
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import net.sourceforge.plantuml.elk.proxy.graph.ElkEdge;
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import net.sourceforge.plantuml.elk.proxy.graph.ElkEdgeSection;
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import net.sourceforge.plantuml.elk.proxy.graph.ElkLabel;
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import net.sourceforge.plantuml.graphic.TextBlock;
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import net.sourceforge.plantuml.graphic.UDrawable;
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import net.sourceforge.plantuml.graphic.color.ColorType;
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import net.sourceforge.plantuml.style.PName;
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import net.sourceforge.plantuml.style.SName;
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import net.sourceforge.plantuml.style.Style;
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import net.sourceforge.plantuml.style.StyleSignatureBasic;
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import net.sourceforge.plantuml.svek.extremity.ExtremityFactory;
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import net.sourceforge.plantuml.svek.extremity.ExtremityFactoryExtends;
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import net.sourceforge.plantuml.ugraphic.UGraphic;
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import net.sourceforge.plantuml.ugraphic.ULine;
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import net.sourceforge.plantuml.ugraphic.UStroke;
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import net.sourceforge.plantuml.ugraphic.UTranslate;
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import net.sourceforge.plantuml.ugraphic.color.HColor;
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import net.sourceforge.plantuml.ugraphic.color.HColors;
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public class ElkPath implements UDrawable {
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private final Link link;
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private final ElkEdge edge;
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private final CucaDiagram diagram;
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private final TextBlock centerLabel;
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private final TextBlock headLabel;
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private final TextBlock tailLabel;
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private final SName styleName;
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private final double magicY2;
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public ElkPath(CucaDiagram diagram, SName styleName, Link link, ElkEdge edge, TextBlock centerLabel,
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TextBlock tailLabel, TextBlock headLabel, double magicY2) {
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this.link = link;
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this.edge = edge;
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this.diagram = diagram;
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this.centerLabel = centerLabel;
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this.tailLabel = tailLabel;
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this.headLabel = headLabel;
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this.styleName = styleName;
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this.magicY2 = magicY2;
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}
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private Style getStyle() {
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final StyleSignatureBasic signature = StyleSignatureBasic.of(SName.root, SName.element, styleName, SName.arrow);
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return signature.getMergedStyle(diagram.getCurrentStyleBuilder());
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}
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public void drawU(UGraphic ug) {
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if (link.isHidden())
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return;
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final ISkinParam skinParam = diagram.getSkinParam();
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HColor color = getStyle().value(PName.LineColor).asColor(skinParam.getThemeStyle(),
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skinParam.getIHtmlColorSet());
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if (this.link.getColors() != null) {
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final HColor newColor = this.link.getColors().getColor(ColorType.ARROW, ColorType.LINE);
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if (newColor != null)
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color = newColor;
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} else if (this.link.getSpecificColor() != null) {
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color = this.link.getSpecificColor();
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}
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final LinkType linkType = link.getType();
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UStroke stroke = linkType.getStroke3(skinParam.getThickness(LineParam.arrow, null));
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if (link.getColors() != null && link.getColors().getSpecificLineStroke() != null)
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stroke = link.getColors().getSpecificLineStroke();
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ug = ug.apply(stroke).apply(color);
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final List<ElkEdgeSection> sections = edge.getSections();
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if (sections.size() == 0) {
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System.err.println("Strange: no section?");
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System.err.println("Maybe a 'Long hierarchical edge' " + edge.isHierarchical());
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return;
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} else {
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drawSections(ug, sections);
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}
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final UDrawable extremityFactory1 = getDecors(link.getType().getDecor1(), Math.PI / 2, HColors.WHITE);
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final UDrawable extremityFactory2 = getDecors(link.getType().getDecor2(), -Math.PI / 2, HColors.WHITE);
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if (extremityFactory1 != null) {
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final double x = sections.get(0).getEndX();
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final double y = sections.get(0).getEndY();
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extremityFactory1.drawU(ug.apply(new UTranslate(x, y)));
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}
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if (extremityFactory2 != null) {
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final double x = sections.get(0).getStartX();
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final double y = sections.get(0).getStartY();
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extremityFactory2.drawU(ug.apply(new UTranslate(x, y)));
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}
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drawLabels(ug);
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}
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private UDrawable getDecors(LinkDecor decors, double angle, HColor backColor) {
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// For legacy reason, extends are treated differently
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if (decors == LinkDecor.EXTENDS)
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return new ExtremityFactoryExtends(backColor).createUDrawable(new Point2D.Double(), angle, null);
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final ExtremityFactory extremityFactory = decors.getExtremityFactory(backColor);
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if (extremityFactory == null)
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return null;
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return extremityFactory.createUDrawable(new Point2D.Double(), angle, null);
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}
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private void drawLabels(UGraphic ug) {
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for (ElkLabel label : edge.getLabels()) {
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final double x = label.getX();
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final double y = label.getY();
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final TextBlock labelLink;
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// Nasty trick: we store the type of label (center/head/tail) in the text
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final String type = label.getText();
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if ("X".equals(type))
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labelLink = centerLabel;
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else if ("1".equals(type))
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labelLink = tailLabel;
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else if ("2".equals(type))
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labelLink = headLabel;
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else
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continue;
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labelLink.drawU(ug.apply(new UTranslate(x, y)));
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}
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}
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private void drawSections(UGraphic ug, final Collection<ElkEdgeSection> sections) {
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for (ElkEdgeSection section : sections) {
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final Collection<ElkBendPoint> points = section.getBendPoints();
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double x1 = section.getStartX();
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double y1 = section.getStartY();
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for (ElkBendPoint pt : points) {
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drawLine(ug, x1, y1, pt.getX(), pt.getY());
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x1 = pt.getX();
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y1 = pt.getY();
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}
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drawLine(ug, x1, y1, section.getEndX(), section.getEndY() + magicY2);
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}
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}
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private void drawLine(UGraphic ug, double x1, double y1, double x2, double y2) {
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final ULine line = new ULine(x2 - x1, y2 - y1);
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ug.apply(new UTranslate(x1, y1)).draw(line);
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}
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}
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