Add interactive functionality for Usecase diagrams exported to SVG

build.xml

@@ -76,6 +76,12 @@
 				<include name="**/*.skin" />
 			</fileset>
 		</copy>
+		<copy todir="build/svg">
+			<fileset dir="svg">
+				<include name="**/*.js" />
+				<include name="**/*.css" />
+			</fileset>
+		</copy>
 	</target>
 
 	<target name="dist" depends="compile">

pom.xml

@@ -30,12 +30,13 @@
 	Script Author: Julien Eluard
 	
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>net.sourceforge.plantuml</groupId>
     <artifactId>plantuml</artifactId>
-    <version>1.2021.2-SNAPSHOT</version>
+    <version>1.2021.1-SNAPSHOT</version>
     <packaging>jar</packaging>
 
     <name>PlantUML</name>
@@ -114,6 +115,8 @@
                 <includes>
                     <include>stdlib/**/*.repx</include>
                     <include>skin/**/*.skin</include>
+                    <include>svg/**/*.css</include>
+                    <include>svg/**/*.js</include>
                 </includes>
             </resource>
         </resources>        

skin/plantuml.skin

@@ -278,3 +278,40 @@ ganttDiagram {
       Shadowing 0.0
 	}
 }
+
+
+usecase {
+  HorizontalAlignment center
+}
+
+yamlDiagram {
+  arrow {
+    LineThickness 1
+    LineStyle 3;3
+  }
+  node {
+    LineThickness 1.5
+  	RoundCorner 10
+  	separator {
+      LineThickness 1
+      LineColor #A80036
+  	}
+  }
+}
+
+jsonDiagram {
+  arrow {
+    LineThickness 1
+    LineStyle 3;3
+  }
+  node {
+    LineThickness 1.5
+  	RoundCorner 10
+  	separator {
+      LineThickness 1
+      LineColor #A80036
+  	}
+  }
+}
+
+

src/net/sourceforge/plantuml/FileUtils.java

@@ -160,6 +160,11 @@ public class FileUtils {
 		return readSvg(br, false, false);
 	}
 
+	static public String readText(InputStream is) throws IOException {
+		final BufferedReader br = new BufferedReader(new InputStreamReader(is));
+		return readSvg(br, true, true);
+	}
+
 	static public String readFile(SFile svgFile) throws IOException {
 		final BufferedReader br = svgFile.openBufferedReader();
 		if (br == null) {

src/net/sourceforge/plantuml/asciiart/ComponentTextActor.java

@@ -71,18 +71,18 @@ public class ComponentTextActor extends AbstractComponentText {
 		final int xman = width / 2 - 1;
 		if (type == ComponentType.ACTOR_HEAD) {
 			if (fileFormat == FileFormat.UTXT) {
-				charArea.drawStringsLRUnicode(stringsToDisplay.as(), 1, getHeight());
+				charArea.drawStringsLRUnicode(stringsToDisplay.asList(), 1, getHeight());
 				charArea.drawShape(AsciiShape.STICKMAN_UNICODE, xman, 0);
 			} else {
-				charArea.drawStringsLRSimple(stringsToDisplay.as(), 1, getHeight());
+				charArea.drawStringsLRSimple(stringsToDisplay.asList(), 1, getHeight());
 				charArea.drawShape(AsciiShape.STICKMAN, xman, 0);
 			}
 		} else if (type == ComponentType.ACTOR_TAIL) {
 			if (fileFormat == FileFormat.UTXT) {
-				charArea.drawStringsLRUnicode(stringsToDisplay.as(), 1, 0);
+				charArea.drawStringsLRUnicode(stringsToDisplay.asList(), 1, 0);
 				charArea.drawShape(AsciiShape.STICKMAN_UNICODE, xman, 1);
 			} else {
-				charArea.drawStringsLRSimple(stringsToDisplay.as(), 1, 0);
+				charArea.drawStringsLRSimple(stringsToDisplay.asList(), 1, 0);
 				charArea.drawShape(AsciiShape.STICKMAN, xman, 1);
 			}
 		} else {

src/net/sourceforge/plantuml/asciiart/ComponentTextArrow.java

@@ -135,9 +135,9 @@ public class ComponentTextArrow extends AbstractComponentText implements ArrowCo
 		// final int position = Math.max(0, (width - textWidth) / 2);
 
 		if (fileFormat == FileFormat.UTXT) {
-			charArea.drawStringsLRUnicode(stringsToDisplay.as(), (width - textWidth) / 2, 0);
+			charArea.drawStringsLRUnicode(stringsToDisplay.asList(), (width - textWidth) / 2, 0);
 		} else {
-			charArea.drawStringsLRSimple(stringsToDisplay.as(), (width - textWidth) / 2, 0);
+			charArea.drawStringsLRSimple(stringsToDisplay.asList(), (width - textWidth) / 2, 0);
 		}
 	}
 
@@ -169,4 +169,8 @@ public class ComponentTextArrow extends AbstractComponentText implements ArrowCo
 		throw new UnsupportedOperationException();
 	}
 
+	public double getPosArrow(StringBounder stringBounder) {
+		throw new UnsupportedOperationException();
+	}
+
 }

src/net/sourceforge/plantuml/asciiart/ComponentTextNote.java

@@ -79,9 +79,9 @@ public class ComponentTextNote extends AbstractComponentText {
 			}
 		}
 		if (fileFormat == FileFormat.UTXT) {
-			charArea.drawStringsLRUnicode(stringsToDisplay.as(), 3, 1);
+			charArea.drawStringsLRUnicode(stringsToDisplay.asList(), 3, 1);
 		} else {
-			charArea.drawStringsLRSimple(stringsToDisplay.as(), 3, 1);
+			charArea.drawStringsLRSimple(stringsToDisplay.asList(), 3, 1);
 		}
 	}
 

src/net/sourceforge/plantuml/asciiart/ComponentTextParticipant.java

@@ -83,9 +83,9 @@ public class ComponentTextParticipant extends AbstractComponentText {
 			}
 		}
 		if (fileFormat == FileFormat.UTXT) {
-			charArea.drawStringsLRUnicode(stringsToDisplay.as(), 1, 1);
+			charArea.drawStringsLRUnicode(stringsToDisplay.asList(), 1, 1);
 		} else {
-			charArea.drawStringsLRSimple(stringsToDisplay.as(), 1, 1);
+			charArea.drawStringsLRSimple(stringsToDisplay.asList(), 1, 1);
 		}
 	}
 

src/net/sourceforge/plantuml/asciiart/ComponentTextSelfArrow.java

@@ -97,9 +97,9 @@ public class ComponentTextSelfArrow extends AbstractComponentText implements Arr
 		}
 
 		if (fileFormat == FileFormat.UTXT) {
-			charArea.drawStringsLRUnicode(stringsToDisplay.as(), 6, 1);
+			charArea.drawStringsLRUnicode(stringsToDisplay.asList(), 6, 1);
 		} else {
-			charArea.drawStringsLRSimple(stringsToDisplay.as(), 6, 1);
+			charArea.drawStringsLRSimple(stringsToDisplay.asList(), 6, 1);
 		}
 	}
 
@@ -126,5 +126,10 @@ public class ComponentTextSelfArrow extends AbstractComponentText implements Arr
 	public double getYPoint(StringBounder stringBounder) {
 		throw new UnsupportedOperationException();
 	}
+	
+	public double getPosArrow(StringBounder stringBounder) {
+		throw new UnsupportedOperationException();
+	}
+
 
 }

src/net/sourceforge/plantuml/asciiart/ComponentTextShape.java

@@ -67,10 +67,10 @@ public class ComponentTextShape extends AbstractComponentText {
 
 		final int xman = width / 2 - shape.getWidth() / 2 + 1;
 		if (type.name().endsWith("_HEAD")) {
-			charArea.drawStringsLRSimple(stringsToDisplay.as(), 1, getHeight());
+			charArea.drawStringsLRSimple(stringsToDisplay.asList(), 1, getHeight());
 			charArea.drawShape(shape, xman, 0);
 		} else {
-			charArea.drawStringsLRSimple(stringsToDisplay.as(), 1, 0);
+			charArea.drawStringsLRSimple(stringsToDisplay.asList(), 1, 0);
 			charArea.drawShape(shape, xman, 1);
 		}
 	}

src/net/sourceforge/plantuml/classdiagram/command/CommandAddMethod.java

@@ -47,6 +47,7 @@ import net.sourceforge.plantuml.cucadiagram.Code;
 import net.sourceforge.plantuml.cucadiagram.IEntity;
 import net.sourceforge.plantuml.cucadiagram.Ident;
 import net.sourceforge.plantuml.skin.VisibilityModifier;
+import net.sourceforge.plantuml.ugraphic.color.NoSuchColorException;
 
 public class CommandAddMethod extends SingleLineCommand2<ClassDiagram> {
 
@@ -65,7 +66,7 @@ public class CommandAddMethod extends SingleLineCommand2<ClassDiagram> {
 	}
 
 	@Override
-	protected CommandExecutionResult executeArg(ClassDiagram diagram, LineLocation location, RegexResult arg) {
+	protected CommandExecutionResult executeArg(ClassDiagram diagram, LineLocation location, RegexResult arg) throws NoSuchColorException {
 		final String idShort = arg.get("NAME", 0);
 		final Ident ident = diagram.buildLeafIdent(idShort);
 		final Code code = diagram.V1972() ? ident : diagram.buildCode(idShort);

src/net/sourceforge/plantuml/classdiagram/command/CommandCreateClassMultilines.java

@@ -92,7 +92,7 @@ public class CommandCreateClassMultilines extends CommandMultilines2<ClassDiagra
 	private static IRegex getRegexConcat() {
 		return RegexConcat.build(CommandCreateClassMultilines.class.getName(), RegexLeaf.start(), //
 				new RegexLeaf("VISIBILITY", "(" + VisibilityModifier.regexForVisibilityCharacterInClassName() + ")?"), //
-				new RegexLeaf("TYPE", "(interface|enum|abstract[%s]+class|abstract|class|entity)"), //
+				new RegexLeaf("TYPE", "(interface|enum|annotation|abstract[%s]+class|abstract|class|entity)"), //
 				RegexLeaf.spaceOneOrMore(), //
 				new RegexOr(//
 						new RegexConcat(//

src/net/sourceforge/plantuml/command/BlocLines.java

@@ -79,13 +79,20 @@ public class BlocLines implements Iterable<StringLocated> {
 		return loadInternal(br, location);
 	}
 
+	public static BlocLines from(List<StringLocated> lines) {
+		return new BlocLines(lines);
+	}
+
 	private static BlocLines loadInternal(final BufferedReader br, LineLocation location) throws IOException {
 		final List<StringLocated> result = new ArrayList<StringLocated>();
 		String s;
-		while ((s = br.readLine()) != null) {
-			result.add(new StringLocated(s, location));
+		try {
+			while ((s = br.readLine()) != null) {
+				result.add(new StringLocated(s, location));
+			}
+		} finally {
+			br.close();
 		}
-		br.close();
 		return new BlocLines(result);
 	}
 

src/net/sourceforge/plantuml/creole/legacy/AtomTextUtils.java

@@ -80,7 +80,7 @@ public class AtomTextUtils {
 		final Display display = Display.getWithNewlines(url.getLabel());
 		if (display.size() > 1) {
 			final List<Atom> all = new ArrayList<Atom>();
-			for (CharSequence s : display.as()) {
+			for (CharSequence s : display.asList()) {
 				all.add(createAtomText(s.toString(), url, fontConfiguration, skinSimple));
 			}
 			return new AtomVerticalTexts(all);

src/net/sourceforge/plantuml/cucadiagram/Bodier.java

@@ -41,6 +41,7 @@ import net.sourceforge.plantuml.FontParam;
 import net.sourceforge.plantuml.ISkinParam;
 import net.sourceforge.plantuml.graphic.TextBlock;
 import net.sourceforge.plantuml.style.Style;
+import net.sourceforge.plantuml.ugraphic.color.NoSuchColorException;
 
 public interface Bodier {
 
@@ -50,7 +51,7 @@ public interface Bodier {
 
 	public Display getMethodsToDisplay();
 
-	public void addFieldOrMethod(String s);
+	public void addFieldOrMethod(String s) throws NoSuchColorException;
 
 	public TextBlock getBody(FontParam fontParam, ISkinParam skinParam, boolean showMethods, boolean showFields,
 			Stereotype stereotype, Style style);

src/net/sourceforge/plantuml/cucadiagram/BodierLikeClassOrObject.java

@@ -211,7 +211,8 @@ public class BodierLikeClassOrObject implements Bodier {
 
 		if (type.isLikeClass() && isBodyEnhanced()) {
 			if (showMethods || showFields) {
-				return BodyFactory.create1(rawBodyWithoutHidden(), fontParam, skinParam, stereotype, leaf, style);
+				return BodyFactory.create1(skinParam.getDefaultTextAlignment(HorizontalAlignment.LEFT),
+						rawBodyWithoutHidden(), fontParam, skinParam, stereotype, leaf, style);
 			}
 			return null;
 		}
@@ -222,7 +223,8 @@ public class BodierLikeClassOrObject implements Bodier {
 			if (showFields == false) {
 				return new TextBlockLineBefore(TextBlockUtils.empty(0, 0));
 			}
-			return BodyFactory.create1(rawBodyWithoutHidden(), fontParam, skinParam, stereotype, leaf, style);
+			return BodyFactory.create1(skinParam.getDefaultTextAlignment(HorizontalAlignment.LEFT),
+					rawBodyWithoutHidden(), fontParam, skinParam, stereotype, leaf, style);
 		}
 		assert type.isLikeClass();
 

src/net/sourceforge/plantuml/cucadiagram/BodierSimple.java

@@ -41,8 +41,10 @@ import java.util.List;
 
 import net.sourceforge.plantuml.FontParam;
 import net.sourceforge.plantuml.ISkinParam;
+import net.sourceforge.plantuml.graphic.HorizontalAlignment;
 import net.sourceforge.plantuml.graphic.TextBlock;
 import net.sourceforge.plantuml.style.Style;
+import net.sourceforge.plantuml.ugraphic.color.NoSuchColorException;
 
 public class BodierSimple implements Bodier {
 
@@ -63,8 +65,9 @@ public class BodierSimple implements Bodier {
 		this.leaf = leaf;
 	}
 
-	public void addFieldOrMethod(String s) {
-		rawBody.add(s);
+	public void addFieldOrMethod(String s) throws NoSuchColorException {
+		final Display display = Display.getWithNewlines2(s);
+		rawBody.addAll(display.asList());
 	}
 
 	public Display getMethodsToDisplay() {
@@ -85,7 +88,8 @@ public class BodierSimple implements Bodier {
 
 	public TextBlock getBody(FontParam fontParam, ISkinParam skinParam, boolean showMethods, boolean showFields,
 			Stereotype stereotype, Style style) {
-		return BodyFactory.create1(rawBody, fontParam, skinParam, stereotype, leaf, style);
+		return BodyFactory.create1(skinParam.getDefaultTextAlignment(HorizontalAlignment.LEFT), rawBody, fontParam,
+				skinParam, stereotype, leaf, style);
 	}
 
 }

src/net/sourceforge/plantuml/cucadiagram/BodyEnhanced1.java

@@ -74,10 +74,9 @@ public class BodyEnhanced1 extends BodyEnhancedAbstract implements TextBlock, Wi
 	private final boolean inEllipse;
 	private final Style style;
 
-	BodyEnhanced1(List<CharSequence> rawBody, FontParam fontParam, ISkinParam skinParam, Stereotype stereotype,
-			ILeaf entity, Style style) {
-		super(skinParam.getDefaultTextAlignment(HorizontalAlignment.LEFT),
-				new FontConfiguration(skinParam, fontParam, stereotype));
+	BodyEnhanced1(HorizontalAlignment align, List<CharSequence> rawBody, FontParam fontParam, ISkinParam skinParam,
+			Stereotype stereotype, ILeaf entity, Style style) {
+		super(align, new FontConfiguration(skinParam, fontParam, stereotype));
 		this.style = style;
 		this.rawBody2 = Display.create(rawBody);
 		this.stereotype = stereotype;
@@ -90,11 +89,10 @@ public class BodyEnhanced1 extends BodyEnhancedAbstract implements TextBlock, Wi
 		this.inEllipse = false;
 	}
 
-	BodyEnhanced1(Display display, FontParam fontParam, ISkinParam skinParam, HorizontalAlignment align,
+	BodyEnhanced1(HorizontalAlignment align, Display display, FontParam fontParam, ISkinParam skinParam,
 			Stereotype stereotype, ILeaf entity, Style style) {
-		super(skinParam.getDefaultTextAlignment(align),
-				style == null ? new FontConfiguration(skinParam, fontParam, stereotype)
-						: style.getFontConfiguration(skinParam.getIHtmlColorSet()));
+		super(align, style == null ? new FontConfiguration(skinParam, fontParam, stereotype)
+				: style.getFontConfiguration(skinParam.getIHtmlColorSet()));
 
 		this.style = style;
 		this.entity = entity;

src/net/sourceforge/plantuml/cucadiagram/BodyFactory.java

@@ -63,14 +63,14 @@ public class BodyFactory {
 		return new BodierSimple();
 	}
 
-	public static TextBlock create1(List<CharSequence> rawBody, FontParam fontParam, ISkinParam skinParam,
-			Stereotype stereotype, ILeaf entity, Style style) {
-		return new BodyEnhanced1(rawBody, fontParam, skinParam, stereotype, entity, style);
+	public static TextBlock create1(HorizontalAlignment align, List<CharSequence> rawBody, FontParam fontParam,
+			ISkinParam skinParam, Stereotype stereotype, ILeaf entity, Style style) {
+		return new BodyEnhanced1(align, rawBody, fontParam, skinParam, stereotype, entity, style);
 	}
 
-	public static TextBlock create2(Display display, FontParam fontParam, ISkinParam skinParam,
-			HorizontalAlignment align, Stereotype stereotype, ILeaf entity, Style style) {
-		return new BodyEnhanced1(display, fontParam, skinParam, align, stereotype, entity, style);
+	public static TextBlock create2(HorizontalAlignment align, Display display, FontParam fontParam,
+			ISkinParam skinParam, Stereotype stereotype, ILeaf entity, Style style) {
+		return new BodyEnhanced1(align, display, fontParam, skinParam, stereotype, entity, style);
 	}
 
 	public static TextBlock create3(Display rawBody, FontParam fontParam, ISkinSimple skinParam,

src/net/sourceforge/plantuml/cucadiagram/Display.java

@@ -418,7 +418,7 @@ public class Display implements Iterable<CharSequence> {
 				this.defaultCreoleMode);
 	}
 
-	public List<? extends CharSequence> as() {
+	public List<? extends CharSequence> asList() {
 		return Collections.unmodifiableList(displayData);
 	}
 

src/net/sourceforge/plantuml/cucadiagram/MethodsOrFieldsArea.java

@@ -62,6 +62,7 @@ import net.sourceforge.plantuml.ugraphic.PlacementStrategy;
 import net.sourceforge.plantuml.ugraphic.PlacementStrategyVisibility;
 import net.sourceforge.plantuml.ugraphic.PlacementStrategyY1Y2Center;
 import net.sourceforge.plantuml.ugraphic.PlacementStrategyY1Y2Left;
+import net.sourceforge.plantuml.ugraphic.PlacementStrategyY1Y2Right;
 import net.sourceforge.plantuml.ugraphic.UGraphic;
 import net.sourceforge.plantuml.ugraphic.ULayoutGroup;
 import net.sourceforge.plantuml.ugraphic.color.HColor;
@@ -284,7 +285,7 @@ public class MethodsOrFieldsArea extends AbstractTextBlock implements TextBlock,
 			} else if (align == HorizontalAlignment.CENTER) {
 				placementStrategy = new PlacementStrategyY1Y2Center(stringBounder);
 			} else {
-				placementStrategy = new PlacementStrategyY1Y2Left(stringBounder);
+				placementStrategy = new PlacementStrategyY1Y2Right(stringBounder);
 			}
 			group = new ULayoutGroup(placementStrategy);
 			for (CharSequence cs : members) {

src/net/sourceforge/plantuml/cucadiagram/dot/CucaDiagramTxtMaker.java

@@ -131,7 +131,7 @@ public final class CucaDiagramTxtMaker {
 		final int w = getWidth(ent);
 		final int h = getHeight(ent);
 		ug.getCharArea().drawBoxSimple(0, 0, w, h);
-		ug.getCharArea().drawStringsLRSimple(ent.getDisplay().as(), 1, 1);
+		ug.getCharArea().drawStringsLRSimple(ent.getDisplay().asList(), 1, 1);
 		if (showMember(ent)) {
 			int y = 2;
 			ug.getCharArea().drawHLine('-', y, 1, w - 1);

src/net/sourceforge/plantuml/descdiagram/EntityImageRequirement.java

@@ -77,8 +77,8 @@ public class EntityImageRequirement extends AbstractEntityImage {
 		super(entity, skinParam);
 		final Stereotype stereotype = entity.getStereotype();
 
-		final TextBlock tmp = BodyFactory.create2(entity.getDisplay(), FontParam.REQUIREMENT, skinParam,
-				HorizontalAlignment.CENTER, stereotype, entity, null);
+		final TextBlock tmp = BodyFactory.create2(skinParam.getDefaultTextAlignment(HorizontalAlignment.CENTER),
+				entity.getDisplay(), FontParam.REQUIREMENT, skinParam, stereotype, entity, null);
 
 		if (stereotype == null || stereotype.getLabel(Guillemet.DOUBLE_COMPARATOR) == null) {
 			this.desc = tmp;

src/net/sourceforge/plantuml/donors/PSystemDonors.java

@@ -77,29 +77,28 @@ public class PSystemDonors extends AbstractPSystem {
 	private static final int COLS = 6;
 	private static final int FREE_LINES = 6;
 
-	public static final String DONORS =
-			"6-KC0AmFkBap0wp4H6CjU-RENbb-8cPf4i7oFA4uiOZJNK3y0UwT7lSRwI-YAxltJJEYrckJSWPHVH3q"+
-			"W7UtXVQXzBy-27EYV0Z-tGWU80D4ITH6ZIpt9Djjcof3Il3lEr_v9UWTth51ehbAgiMHwq-_8GFlEsFp"+
-			"x3GsNZsQe2y2FmRsrV-REbkNLuKmItShC0AZeX4owzXZ_1_Lei8fs7Seq6EhCPrAK1qELLHYiytVvB1A"+
-			"6l12LJil5PfCYb5JfFXQ8GsVtfXGavF6HyX67vn_g1_2cyqLbZBE1E9eGnrTN_-tPTk8zkTAl0XoXrXG"+
-			"M60Ef1m9YoX-Rdhmmos0eMeMWx45XJLFOY6H0YtapH_gIS4ZvSpfSF73um4G-3o32YIjg4OJpfPN0ygF"+
-			"P8iMIrnrSTnOwiTXUIfz90sF9nOU5jG2QWZoF-Y2JeirFfewszNWIEffadkzfQXV1M_csape6roQ9Aot"+
-			"jPTczhYYb2LIJTlu7EqrZm3SBRLon9VHH2W7QFQRLw6iVhH0VWIwgYPioPzbNrd8XAYsOHzwrxdyy1X4"+
-			"s2T3fecr_swslPR-GjUCOLF22h1epvYlYqrmi8MkJ1u1dj3AvxBE1v2qj7g_wF6mTfzmJRx4lI7HUXzX"+
-			"AVttgpxC3CK1sbDc5dJZ1KjdDAsQYos8O8_GqG4tXUHAE7VNvTXzNAIF_0J0cqiFkiD6e1RY-MOgJKSX"+
-			"KaFghaWp0PWzhTJ53wyb38gr2ReQLOBfPRNQutGrfYyRC_T96rpN6enH7DEPwWlBtQiYBGppLQCvVRDs"+
-			"WEOKF9MN_RpgNQLS1RYqy1xmmJt_o82VwPM1I97fxjis_2DBimgBMQovRbQbkweV73nq_O4xMZI96MNo"+
-			"aAL1SIWHDVKhaP-M37zBa4tpUpdQQrYThZD2X1bfS7jfSavDZldXDftbEDWWHA9QlEAK99nViDjb9Td2"+
-			"faXvnkfUICXldqyYKYKib1hiQky2FADv5EJXl6jMBQlN9amke99i9WXA2rQr53hIrm8P6AlNCz4QiVrf"+
-			"WGLZQOzHCt4elcAYjSeD15DWfeJpXK4aaaAzb5xc9161__bpbthQK0SxlZE6JyP1ieSa0geWzHadgeRQ"+
-			"wz5j6Eib_dwzb9kFuC-_zcYJKwtTyrE2Q1t41Q275t0fzmizU1huQsoO13Z42YvwaN3begMdWOG5w_7E"+
-			"8khIEADn4vFbXkIYLUI7ol_zkHOkvaDio77n73fQBAdIoyrgK6csht_NuIY7Zh-BAdqYkVmtFPEHq4aO"+
-			"nBauzjM6eQbA2bXG7RK9hDtrsscMkyQSTo3L3oT0ljoGKwaMeOKrDItk2u7bOYplRTfFEIt-au5-ajRf"+
-			"nruzr1navxfs4mtVjX3Q4Js9uI9nGuJ-bI4d6dZune-yg1PAmzAw6NQkO8NyUbx62mcxxE03arfUfQno"+
-			"Guw-XUmjrS2F0A9AQ203YoMwUh5Gol50YgHWpi4odY7beBKukIS0foZOt-zh42uzqNo7Pktj6OLaBjlS"+
-			"J0OGwN1-MebD-cpLo85zDNFPwXMvBRL8X-txTdp7-Vf7rDM324WWgadm6btarOszPcdO9CERMHp7PMOU"+
-			"J7uEkwATfGniDPCjo5ms0mLF0X0x42eaT-5NyH5ppZdox_r6NnXemlF0QNJZkH9iGBRSY9GqeEOeYppt"+
-			"lNsJ4m00";
+	public static final String DONORS = "6neD0AmFkBap0wp4H6CjU-RENbb-8cPf4i7oFA4uiOZJNK3y0UwT7lSRwI-YAxltJJEYrckJSaPHV13q"
+			+ "W7UtXVQXzBy-27EYV0Z-tGWU80D4ITH6ZIpt9Djjcof3Il3lEr_v9UWTth51ehbAgiMHwq-_8GFlEsFp"
+			+ "x3GsNZsQe2y2FmRsrPzVStLjuA5OdYSeWP8k4zg9ecxlNzf8nq_W_vEaQXTjwOuqQQIX0ZigyDXNVjMr"
+			+ "yr6ZoQeOCKMAhnNIyEcD2GqvwNs2RD2Wy4Fz4Dvihh2KSIOGHniYT7szjcFRYE4NIdpOvGwnm93074Wv"
+			+ "qXTHzDnGK70BOAYRnMniIUN8anHGP4CBUVE7UbBnI3bpEbmKF1u0WSypg42aDMhGXBFvmu2A8zcYmn9N"
+			+ "dHatbkPnM9xIHjBmD6BXOK4he8OW_uCkyBHOuwEfirqDZgIU9hbtMudwiztRkJOh-aRN9WdhQ-kbMMnS"
+			+ "KSeIgQvjV8xscaS0xfPQEUBBw2EK0pJxpQkAh7wqGFm8T5zDs98_otwma0bXRSC-KDUv-l2OHJWcGwQ9"
+			+ "TVnkjhsclT35TZOWOGLOfFVahpDDS50BNOay0ZoXLSnbdGyKqjBg_QB7mzfzmZN54lU6HEzzXANqtw_w"
+			+ "C3CK1-X0cLdGJHCidT6qQY-s889wX8uEk2aaLyAvkox7xkCYVUGd0DvKUa0E6pkD4CylKsaw2g4QqdLD"
+			+ "cXN0v6cbBGfUInYKQnDqCwe4GsMrskDqTQOl6nFtIHyyRpKO8t5CPwelB7UlYhGmB5QDPcspTe3c55pX"
+			+ "upYlUizShWAqjl0UyS4z_yY0dkcLWKYH8VTj6_wHfLc5nIpMN3UhqbtL3suUkld0NIoQnOmoUSXKQ1nA"
+			+ "H4lzIkId9SFV76HLVwqkzWusf-kC46567DnUcbnJasCARjDPZeCDGcIenIjESSBv1NjOLf8jR0gLPwmU"
+			+ "XOJyZlaa8bNwGcd0hk6km3EIHq4UpdjWrR9wRIh91LIHpGH1QS6gbYgEzBL01iQQzCoqHcn_Mc31MDfZ"
+			+ "T2mx5BrYegtA3JAcm4mJwXS6aIWrr4lfPKuI4VYVFtUf9yrraECxO_Xa74Jsa4I0AkJkZ1DLJztjw3QC"
+			+ "zH9_lrxApKVmvrzxjCcfqUxvQOBGEeWAG0ylu5Bk5thmDF3Ns30JS8WLLFGYuSfLIuy32GisuvrTrBbb"
+			+ "HkCc9ikDoKMlo0zL_5lS2XVJ8JRek0YcE5eigTBBpMfGSRPlVjVX8eUEVuagGoAvhDKo6GaUXLcScsDV"
+			+ "RHYQjd834bH7RG9hT_rsckMkCUSha9g6oq2-tP1JgHQXXMfgMjuN0gl5sD_Rj9zoMlmd0_quhRNZgXuQ"
+			+ "3d9qVRk9XczRsDiPFOdX8cP3XFwLEISSUFZ6Zxoe5ah3qhOPTgvWXVm6NiOB2OViu0EJMbwbh793Zhw5"
+			+ "x1tLA3y1H3N1WGmiLkYQn48fnmCfae8vPyjeXfI3Fk2idW2Sec1_Vsz1E2tH_8ncxUqPXMGksznDPX3n"
+			+ "S7u6YPfCsUgH0_jYvhBDAt8xQf4EE_Rj-8xpxO-ecmSHo84e9i5hTQ4FD_QQfM5JVAxJu3ukS_DcyWku"
+			+ "5EqyPM1hc6n1bh8Pg7WIWDX1faBvrVwh-OWjvnJvztvZAWmquNdYDBhnN0is8rjjH4eQq7AHXT_wViTD"
+			+ "JWvCd1BPydFDONPw64xHwHK0";
 
 	/*
 	 * Special thanks to our sponsors and donors:

src/net/sourceforge/plantuml/eggs/PSystemWelcome.java

@@ -5,12 +5,12 @@
  * (C) Copyright 2009-2020, 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
@@ -30,7 +30,7 @@
  *
  *
  * Original Author:  Arnaud Roques
- *
+ * 
  *
  */
 package net.sourceforge.plantuml.eggs;
@@ -73,8 +73,9 @@ public class PSystemWelcome extends AbstractPSystem {
 		strings.add(" ");
 		strings.add("You will find more information about PlantUML syntax on <u>https://plantuml.com</u>");
 		strings.add(" ");
-		strings.add("If you use this software, you accept its license.");
+		strings.add("(If you use this software, you accept its license.)");
 		strings.add("(details by typing \"\"license\"\" keyword)");
+		strings.add(" ");
 		if (position == GraphicPosition.BACKGROUND_CORNER_BOTTOM_RIGHT) {
 			strings.add(" ");
 			strings.add(" ");

src/net/sourceforge/plantuml/graphic/HorizontalAlignment.java

@@ -77,15 +77,15 @@ public enum HorizontalAlignment {
 		return toString().substring(0, 1).toLowerCase();
 	}
 
-	public void draw(UGraphic ug, TextBlock tb, double padding, Dimension2D dimTotal) {
+	public void draw(UGraphic ug, TextBlock tb, double padding, double width) {
 		if (this == HorizontalAlignment.LEFT) {
 			tb.drawU(ug.apply(new UTranslate(padding, padding)));
 		} else if (this == HorizontalAlignment.RIGHT) {
 			final Dimension2D dimTb = tb.calculateDimension(ug.getStringBounder());
-			tb.drawU(ug.apply(new UTranslate(dimTotal.getWidth() - dimTb.getWidth() - padding, padding)));
+			tb.drawU(ug.apply(new UTranslate(width - dimTb.getWidth() - padding, padding)));
 		} else if (this == HorizontalAlignment.CENTER) {
 			final Dimension2D dimTb = tb.calculateDimension(ug.getStringBounder());
-			tb.drawU(ug.apply(new UTranslate((dimTotal.getWidth() - dimTb.getWidth()) / 2, padding)));
+			tb.drawU(ug.apply(new UTranslate((width - dimTb.getWidth()) / 2, padding)));
 		}
 
 	}

src/net/sourceforge/plantuml/graphic/TextBlockUtils.java

@@ -135,6 +135,11 @@ public class TextBlockUtils {
 			public Dimension2D calculateDimension(StringBounder stringBounder) {
 				return new Dimension2DDouble(width, height);
 			}
+			
+			public Rectangle2D getInnerPosition(String member, StringBounder stringBounder, InnerStrategy strategy) {
+				return null;
+			}
+
 		};
 	}
 
@@ -227,6 +232,8 @@ public class TextBlockUtils {
 				}
 				return null;
 			}
+			
+			
 
 		};
 	}

src/net/sourceforge/plantuml/json/JsonString.java

@@ -25,7 +25,7 @@ import java.io.IOException;
 
 
 @SuppressWarnings("serial") // use default serial UID
-class JsonString extends JsonValue {
+public class JsonString extends JsonValue {
 
   private final String string;
 

src/net/sourceforge/plantuml/jsondiagram/JsonDiagram.java

@@ -45,7 +45,7 @@ import net.sourceforge.plantuml.FileFormatOption;
 import net.sourceforge.plantuml.ISkinParam;
 import net.sourceforge.plantuml.Scale;
 import net.sourceforge.plantuml.SkinParam;
-import net.sourceforge.plantuml.UmlDiagram;
+import net.sourceforge.plantuml.TitledDiagram;
 import net.sourceforge.plantuml.UmlDiagramType;
 import net.sourceforge.plantuml.UseStyle;
 import net.sourceforge.plantuml.core.DiagramDescription;
@@ -69,7 +69,7 @@ import net.sourceforge.plantuml.ugraphic.UGraphic;
 import net.sourceforge.plantuml.ugraphic.color.ColorMapperIdentity;
 import net.sourceforge.plantuml.ugraphic.color.HColor;
 
-public class JsonDiagram extends UmlDiagram {
+public class JsonDiagram extends TitledDiagram {
 
 	private final JsonValue root;
 	private final List<String> highlighted;
@@ -93,7 +93,7 @@ public class JsonDiagram extends UmlDiagram {
 	}
 
 	@Override
-	protected ImageData exportDiagramInternal(OutputStream os, int index, FileFormatOption fileFormatOption)
+	protected ImageData exportDiagramNow(OutputStream os, int index, FileFormatOption fileFormatOption, long seed)
 			throws IOException {
 		final Scale scale = getScale();
 

src/net/sourceforge/plantuml/jsondiagram/JsonDiagramFactory.java

@@ -40,7 +40,6 @@ import java.util.Iterator;
 import java.util.List;
 
 import net.sourceforge.plantuml.BackSlash;
-import net.sourceforge.plantuml.StringLocated;
 import net.sourceforge.plantuml.UmlDiagramType;
 import net.sourceforge.plantuml.command.PSystemAbstractFactory;
 import net.sourceforge.plantuml.core.Diagram;
@@ -58,13 +57,15 @@ public class JsonDiagramFactory extends PSystemAbstractFactory {
 
 	public Diagram createSystem(UmlSource source) {
 		final List<String> highlighted = new ArrayList<String>();
+		StyleExtractor styleExtractor = null;
 		JsonValue json;
 		try {
 			final StringBuilder sb = new StringBuilder();
-			final Iterator<StringLocated> it = source.iterator2();
+			styleExtractor = new StyleExtractor(source.iterator2());
+			final Iterator<String> it = styleExtractor.getIterator();
 			it.next();
 			while (true) {
-				final String line = it.next().getString();
+				final String line = it.next();
 				if (it.hasNext() == false) {
 					break;
 				}
@@ -83,6 +84,9 @@ public class JsonDiagramFactory extends PSystemAbstractFactory {
 			json = null;
 		}
 		final JsonDiagram result = new JsonDiagram(UmlDiagramType.JSON, json, highlighted);
+		if (styleExtractor != null) {
+			styleExtractor.applyStyles(result.getSkinParam());
+		}
 		result.setSource(source);
 		return result;
 	}

src/net/sourceforge/plantuml/jsondiagram/SmetanaForJson.java

@@ -53,6 +53,7 @@ import h.ST_Agnodeinfo_t;
 import h.ST_Agraph_s;
 import h.ST_GVC_s;
 import net.sourceforge.plantuml.ISkinParam;
+import net.sourceforge.plantuml.UmlDiagramType;
 import net.sourceforge.plantuml.graphic.StringBounder;
 import net.sourceforge.plantuml.json.JsonValue;
 import net.sourceforge.plantuml.style.PName;
@@ -60,7 +61,6 @@ import net.sourceforge.plantuml.style.SName;
 import net.sourceforge.plantuml.style.Style;
 import net.sourceforge.plantuml.style.StyleSignature;
 import net.sourceforge.plantuml.ugraphic.UGraphic;
-import net.sourceforge.plantuml.ugraphic.UStroke;
 import net.sourceforge.plantuml.ugraphic.UTranslate;
 import net.sourceforge.plantuml.ugraphic.color.HColor;
 import smetana.core.CString;
@@ -106,16 +106,21 @@ public class SmetanaForJson {
 	public SmetanaForJson(UGraphic ug, ISkinParam skinParam) {
 		this.stringBounder = ug.getStringBounder();
 		this.skinParam = skinParam;
-		this.ug = getStyle().applyStrokeAndLineColor(ug, skinParam.getIHtmlColorSet());
+		this.ug = ug;
 	}
 
-	private Style getStyle() {
-		return StyleSignature.of(SName.root, SName.element, SName.jsonDiagram)
+	private UGraphic getUgFor(SName name) {
+		return getStyle(name).applyStrokeAndLineColor(ug, skinParam.getIHtmlColorSet());
+	}
+
+	private Style getStyle(SName name) {
+		return StyleSignature.of(SName.root, SName.element,
+				skinParam.getUmlDiagramType() == UmlDiagramType.YAML ? SName.yamlDiagram : SName.jsonDiagram, name)
 				.getMergedStyle(skinParam.getCurrentStyleBuilder());
 	}
 
 	private ST_Agnode_s manageOneNode(JsonValue current, List<String> highlighted) {
-		final TextBlockJson block = new TextBlockJson(skinParam, current, highlighted);
+		final TextBlockJson block = new TextBlockJson(skinParam, current, highlighted, getStyle(SName.node));
 		final ST_Agnode_s node1 = createNode(block.calculateDimension(stringBounder), block.size(), current.isArray(),
 				(int) block.getWidthColA(stringBounder), (int) block.getWidthColB(stringBounder));
 		nodes.add(new InternalNode(block, node1));
@@ -157,14 +162,15 @@ public class SmetanaForJson {
 		xMirror = new Mirror(max);
 
 		for (InternalNode node : nodes) {
-			node.block.drawU(ug.apply(getPosition(node.node)));
+			node.block.drawU(getUgFor(SName.node).apply(getPosition(node.node)));
 		}
-		final HColor color = getStyle().value(PName.LineColor).asColor(skinParam.getIHtmlColorSet());
+		final HColor color = getStyle(SName.arrow).value(PName.LineColor).asColor(skinParam.getIHtmlColorSet());
 
 		for (ST_Agedge_s edge : edges) {
 			final JsonCurve curve = getCurve(edge, 13);
-			curve.drawCurve(color, ug.apply(new UStroke(3, 3, 1)));
-			curve.drawSpot(ug.apply(color.bg()));
+			// curve.drawCurve(color, getUgFor(SName.arrow).apply(new UStroke(3, 3, 1)));
+			curve.drawCurve(color, getUgFor(SName.arrow));
+			curve.drawSpot(getUgFor(SName.arrow).apply(color.bg()));
 		}
 	}
 
@@ -235,7 +241,8 @@ public class SmetanaForJson {
 		agsafeset(node, new CString("height"), new CString("" + width), new CString(""));
 		agsafeset(node, new CString("width"), new CString("" + height), new CString(""));
 
-		final String dotLabel = getDotLabel(size, isArray, colAwidth - 8, colBwidth - 8);
+		final int lineHeight = 0;
+		final String dotLabel = getDotLabel(size, isArray, colAwidth - 8, colBwidth - 8, lineHeight);
 		if (size > 0) {
 			agsafeset(node, new CString("label"), new CString(dotLabel), new CString(""));
 		}
@@ -250,14 +257,15 @@ public class SmetanaForJson {
 		return node;
 	}
 
-	private String getDotLabel(int size, boolean isArray, int widthA, int widthB) {
+	private String getDotLabel(int size, boolean isArray, int widthA, int widthB, int height) {
 		final StringBuilder sb = new StringBuilder("");
 		if (isArray == false) {
-			sb.append("{_dim_0_" + widthA + "_|{");
+			// "+height+"
+			sb.append("{_dim_" + height + "_" + widthA + "_|{");
 		}
 		for (int i = 0; i < size; i++) {
 			sb.append("<P" + i + ">");
-			sb.append("_dim_0_" + widthB + "_");
+			sb.append("_dim_" + height + "_" + widthB + "_");
 			if (i < size - 1)
 				sb.append("|");
 		}

src/net/sourceforge/plantuml/jsondiagram/StyleExtractor.java

@@ -0,0 +1,85 @@
+/* ========================================================================
+ * PlantUML : a free UML diagram generator
+ * ========================================================================
+ *
+ * (C) Copyright 2009-2020, 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.jsondiagram;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+import net.sourceforge.plantuml.ISkinParam;
+import net.sourceforge.plantuml.StringLocated;
+import net.sourceforge.plantuml.command.BlocLines;
+import net.sourceforge.plantuml.style.Style;
+import net.sourceforge.plantuml.style.StyleBuilder;
+import net.sourceforge.plantuml.style.StyleLoader;
+
+public class StyleExtractor {
+
+	private final List<String> list = new ArrayList<String>();
+	private final List<StringLocated> style = new ArrayList<StringLocated>();
+
+	public StyleExtractor(Iterator<StringLocated> data) {
+		while (data.hasNext()) {
+			StringLocated line = data.next();
+			if (line.getString().trim().equals("<style>")) {
+				while (data.hasNext()) {
+					style.add(line);
+					if (line.getString().trim().equals("</style>")) {
+						break;
+					}
+					line = data.next();
+				}
+			} else {
+				list.add(line.getString());
+			}
+		}
+	}
+
+	public void applyStyles(ISkinParam skinParam) {
+		if (style.size() > 0) {
+			final StyleBuilder styleBuilder = skinParam.getCurrentStyleBuilder();
+			final BlocLines blocLines = BlocLines.from(style);
+			for (Style modifiedStyle : StyleLoader.getDeclaredStyles(blocLines.subExtract(1, 1), styleBuilder)) {
+				skinParam.muteStyle(modifiedStyle);
+			}
+		}
+	}
+
+	public Iterator<String> getIterator() {
+		return list.iterator();
+	}
+
+}

src/net/sourceforge/plantuml/jsondiagram/TextBlockJson.java

@@ -42,6 +42,7 @@ import java.util.List;
 
 import net.sourceforge.plantuml.Dimension2DDouble;
 import net.sourceforge.plantuml.ISkinParam;
+import net.sourceforge.plantuml.LineBreakStrategy;
 import net.sourceforge.plantuml.creole.CreoleMode;
 import net.sourceforge.plantuml.cucadiagram.Display;
 import net.sourceforge.plantuml.graphic.AbstractTextBlock;
@@ -54,14 +55,13 @@ import net.sourceforge.plantuml.json.JsonArray;
 import net.sourceforge.plantuml.json.JsonObject;
 import net.sourceforge.plantuml.json.JsonObject.Member;
 import net.sourceforge.plantuml.json.JsonValue;
+import net.sourceforge.plantuml.style.PName;
 import net.sourceforge.plantuml.style.SName;
 import net.sourceforge.plantuml.style.Style;
-import net.sourceforge.plantuml.style.StyleSignature;
 import net.sourceforge.plantuml.svek.TextBlockBackcolored;
 import net.sourceforge.plantuml.ugraphic.UGraphic;
 import net.sourceforge.plantuml.ugraphic.ULine;
 import net.sourceforge.plantuml.ugraphic.URectangle;
-import net.sourceforge.plantuml.ugraphic.UStroke;
 import net.sourceforge.plantuml.ugraphic.UTranslate;
 import net.sourceforge.plantuml.ugraphic.color.HColor;
 
@@ -70,6 +70,7 @@ public class TextBlockJson extends AbstractTextBlock implements TextBlockBackcol
 
 	private final List<Line> lines = new ArrayList<Line>();
 
+	private final Style style;
 	private final ISkinParam skinParam;
 	private double totalWidth;
 	private final JsonValue root;
@@ -99,8 +100,9 @@ public class TextBlockJson extends AbstractTextBlock implements TextBlockBackcol
 
 	}
 
-	public TextBlockJson(ISkinParam skinParam, JsonValue root, List<String> highlighted) {
+	public TextBlockJson(ISkinParam skinParam, JsonValue root, List<String> highlighted, Style style) {
 		this.skinParam = skinParam;
+		this.style = style;
 		this.root = root;
 		if (root instanceof JsonObject)
 			for (Member member : (JsonObject) root) {
@@ -230,17 +232,37 @@ public class TextBlockJson extends AbstractTextBlock implements TextBlockBackcol
 		return width;
 	}
 
-	public void drawU(UGraphic ug) {
+	public void drawU(final UGraphic ug) {
 		final StringBounder stringBounder = ug.getStringBounder();
 
 		final Dimension2D fullDim = calculateDimension(stringBounder);
 		double trueWidth = Math.max(fullDim.getWidth(), totalWidth);
 		final double widthColA = getWidthColA(stringBounder);
+		final double widthColB = getWidthColB(stringBounder);
 
 		double y = 0;
-		ug = getStyle().applyStrokeAndLineColor(ug, skinParam.getIHtmlColorSet());
+		final UGraphic ugNode = style.applyStrokeAndLineColor(ug, skinParam.getIHtmlColorSet());
 		for (Line line : lines) {
-			final UGraphic ugline = ug.apply(UTranslate.dy(y));
+			final double heightOfRow = line.getHeightOfRow(stringBounder);
+			y += heightOfRow;
+		}
+		if (y == 0)
+			y = 15;
+		if (trueWidth == 0)
+			trueWidth = 30;
+
+		final double round = style.value(PName.RoundCorner).asDouble();
+		final URectangle fullNodeRectangle = new URectangle(trueWidth, y).rounded(round);
+		final HColor backColor = style.value(PName.BackGroundColor).asColor(skinParam.getIHtmlColorSet());
+		ugNode.apply(backColor.bg()).apply(backColor).draw(fullNodeRectangle);
+
+		final Style styleSeparator = style.getSignature().add(SName.separator)
+				.getMergedStyle(skinParam.getCurrentStyleBuilder());
+		final UGraphic ugSeparator = styleSeparator.applyStrokeAndLineColor(ug, skinParam.getIHtmlColorSet());
+
+		y = 0;
+		for (Line line : lines) {
+			final UGraphic ugline = ugSeparator.apply(UTranslate.dy(y));
 			final double heightOfRow = line.getHeightOfRow(stringBounder);
 			if (line.highlighted) {
 				final URectangle back = new URectangle(trueWidth - 2, heightOfRow).rounded(4);
@@ -251,24 +273,19 @@ public class TextBlockJson extends AbstractTextBlock implements TextBlockBackcol
 			if (y > 0)
 				ugline.draw(ULine.hline(trueWidth));
 
-			final double posColA = (widthColA - line.b1.calculateDimension(stringBounder).getWidth()) / 2;
-			line.b1.drawU(ugline.apply(UTranslate.dx(posColA)));
+			final HorizontalAlignment horizontalAlignment = style.getHorizontalAlignment();
+			horizontalAlignment.draw(ugline, line.b1, 0, widthColA);
 
 			if (line.b2 != null) {
-				line.b2.drawU(ugline.apply(UTranslate.dx(widthColA)));
-				ugline.apply(UTranslate.dx(widthColA)).draw(ULine.vline(heightOfRow));
+				final UGraphic uglineColB = ugline.apply(UTranslate.dx(widthColA));
+				horizontalAlignment.draw(uglineColB, line.b2, 0, widthColB);
+				uglineColB.draw(ULine.vline(heightOfRow));
 			}
 
 			y += heightOfRow;
 		}
+		ugNode.draw(fullNodeRectangle);
 
-		if (y == 0)
-			y = 15;
-		if (trueWidth == 0)
-			trueWidth = 30;
-
-		final URectangle full = new URectangle(trueWidth, y).rounded(10);
-		ug.apply(new UStroke(1.5)).draw(full);
 	}
 
 	private double getTotalHeight(StringBounder stringBounder) {
@@ -281,18 +298,15 @@ public class TextBlockJson extends AbstractTextBlock implements TextBlockBackcol
 
 	private TextBlock getTextBlock(String key) {
 		final Display display = Display.getWithNewlines(key);
-		final FontConfiguration fontConfiguration = getStyle().getFontConfiguration(skinParam.getIHtmlColorSet());
-		TextBlock result = display.create7(fontConfiguration, HorizontalAlignment.LEFT, skinParam,
-				CreoleMode.NO_CREOLE);
+		final FontConfiguration fontConfiguration = style.getFontConfiguration(skinParam.getIHtmlColorSet());
+		final LineBreakStrategy wrap = style.wrapWidth();
+		final HorizontalAlignment horizontalAlignment = style.getHorizontalAlignment();
+		TextBlock result = display.create0(fontConfiguration, horizontalAlignment, skinParam, wrap,
+				CreoleMode.NO_CREOLE, null, null);
 		result = TextBlockUtils.withMargin(result, 5, 2);
 		return result;
 	}
 
-	private Style getStyle() {
-		return StyleSignature.of(SName.root, SName.element, SName.jsonDiagram)
-				.getMergedStyle(skinParam.getCurrentStyleBuilder());
-	}
-
 	public void setTotalWidth(double totalWidth) {
 		this.totalWidth = totalWidth;
 	}

src/net/sourceforge/plantuml/objectdiagram/command/CommandAddData.java

@@ -45,6 +45,7 @@ import net.sourceforge.plantuml.command.regex.RegexResult;
 import net.sourceforge.plantuml.cucadiagram.IEntity;
 import net.sourceforge.plantuml.objectdiagram.AbstractClassOrObjectDiagram;
 import net.sourceforge.plantuml.skin.VisibilityModifier;
+import net.sourceforge.plantuml.ugraphic.color.NoSuchColorException;
 
 public class CommandAddData extends SingleLineCommand2<AbstractClassOrObjectDiagram> {
 
@@ -63,7 +64,7 @@ public class CommandAddData extends SingleLineCommand2<AbstractClassOrObjectDiag
 
 	@Override
 	protected CommandExecutionResult executeArg(AbstractClassOrObjectDiagram diagram, LineLocation location,
-			RegexResult arg) {
+			RegexResult arg) throws NoSuchColorException {
 		final String name = arg.get("NAME", 0);
 		final IEntity entity = diagram.getOrCreateLeaf(diagram.buildLeafIdent(name),
 				diagram.buildCode(name), null, null);

src/net/sourceforge/plantuml/picoweb/PicoWebServer.java

@@ -36,6 +36,9 @@
  */
 package net.sourceforge.plantuml.picoweb;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+import static net.sourceforge.plantuml.ErrorUmlType.SYNTAX_ERROR;
+
 import java.io.BufferedInputStream;
 import java.io.BufferedOutputStream;
 import java.io.ByteArrayOutputStream;
@@ -67,9 +70,6 @@ import net.sourceforge.plantuml.error.PSystemErrorUtils;
 import net.sourceforge.plantuml.graphic.QuoteUtils;
 import net.sourceforge.plantuml.version.Version;
 
-import static java.nio.charset.StandardCharsets.UTF_8;
-import static net.sourceforge.plantuml.ErrorUmlType.SYNTAX_ERROR;
-
 public class PicoWebServer implements Runnable {
 
 	private final Socket connect;
@@ -127,8 +127,7 @@ public class PicoWebServer implements Runnable {
 		} catch (Throwable e) {
 			try {
 				sendError(e, out);
-			}
-			catch (Throwable e1) {
+			} catch (Throwable e1) {
 				e.printStackTrace();
 			}
 		} finally {
@@ -142,7 +141,8 @@ public class PicoWebServer implements Runnable {
 		}
 	}
 
-	private boolean handleGET(ReceivedHTTPRequest request, BufferedOutputStream out, final FileFormat format) throws IOException {
+	private boolean handleGET(ReceivedHTTPRequest request, BufferedOutputStream out, final FileFormat format)
+			throws IOException {
 		final int x = request.getPath().lastIndexOf('/');
 		final String compressed = request.getPath().substring(x + 1);
 		final Transcoder transcoder = TranscoderUtil.getDefaultTranscoderProtected();
@@ -156,7 +156,8 @@ public class PicoWebServer implements Runnable {
 			final ByteArrayOutputStream os = new ByteArrayOutputStream();
 			final ImageData imageData = system.exportDiagram(os, 0, fileFormatOption);
 			os.close();
-			sendDiagram(out, system, fileFormatOption, httpReturnCode(imageData.getStatus()), imageData, os.toByteArray());
+			sendDiagram(out, system, fileFormatOption, httpReturnCode(imageData.getStatus()), imageData,
+					os.toByteArray());
 			return true;
 		}
 		return false;
@@ -176,8 +177,7 @@ public class PicoWebServer implements Runnable {
 
 		final Option option = new Option(renderRequest.getOptions());
 
-		final String source = renderRequest.getSource().startsWith("@start")
-				? renderRequest.getSource()
+		final String source = renderRequest.getSource().startsWith("@start") ? renderRequest.getSource()
 				: "@startuml\n" + renderRequest.getSource() + "\n@enduml";
 
 		final SourceStringReader ssr = new SourceStringReader(option.getDefaultDefines(), source, option.getConfig());
@@ -186,13 +186,10 @@ public class PicoWebServer implements Runnable {
 		final ImageData imageData;
 
 		if (ssr.getBlocks().size() == 0) {
-			system = PSystemErrorUtils.buildV2(
-					null,
-					new ErrorUml(SYNTAX_ERROR, "No @startuml/@enduml found", 0, new LineLocationImpl("", null)),
-					null,
-					Collections.<StringLocated>emptyList()
-			);
-			imageData = ssr.noStartumlFound(os, option.getFileFormatOption(),42);
+			system = PSystemErrorUtils.buildV2(null,
+					new ErrorUml(SYNTAX_ERROR, "No @startuml/@enduml found", 0, new LineLocationImpl("", null)), null,
+					Collections.<StringLocated>emptyList());
+			imageData = ssr.noStartumlFound(os, option.getFileFormatOption(), 42);
 		} else {
 			system = ssr.getBlocks().get(0).getDiagram();
 			imageData = system.exportDiagram(os, 0, option.getFileFormatOption());
@@ -201,9 +198,9 @@ public class PicoWebServer implements Runnable {
 		sendDiagram(out, system, option.getFileFormatOption(), "200", imageData, os.toByteArray());
 	}
 
-	private void sendDiagram(final BufferedOutputStream out, final Diagram system, final FileFormatOption fileFormatOption,
-							 final String returnCode, final ImageData imageData, final byte[] fileData)
-			throws IOException {
+	private void sendDiagram(final BufferedOutputStream out, final Diagram system,
+			final FileFormatOption fileFormatOption, final String returnCode, final ImageData imageData,
+			final byte[] fileData) throws IOException {
 
 		write(out, "HTTP/1.1 " + returnCode);
 		write(out, "Cache-Control: no-cache");

src/net/sourceforge/plantuml/picoweb/PicoWebServerTest.java

@@ -248,11 +248,16 @@ public class PicoWebServerTest {
 	}
 
 	private static String httpRaw(String request) throws Exception {
-		try (Socket socket = socketConnection()) {
+		Socket socket = null;
+		try {
+			socket = socketConnection();
 			socket.getOutputStream().write(request.getBytes(UTF_8));
 			socket.shutdownOutput();
-			return readStreamAsString(socket.getInputStream())
-					.replaceAll("\r\n", "\n");
+			return readStreamAsString(socket.getInputStream()).replaceAll("\r\n", "\n");
+		} finally {
+			if (socket != null) {
+				socket.close();
+			}
 		}
 	}
 

src/net/sourceforge/plantuml/preproc/Sub.java

@@ -102,7 +102,6 @@ public class Sub {
 				result.add(s);
 			}
 		}
-		reader.close();
 		return result;
 	}
 

src/net/sourceforge/plantuml/sequencediagram/LinkAnchor.java

@@ -82,11 +82,10 @@ public class LinkAnchor {
 
 	public void drawAnchor(UGraphic ug, YPositionedTile tile1, YPositionedTile tile2, ISkinParam param) {
 
-		final StringBounder stringBounder = ug.getStringBounder();
-		final double y1 = tile1.getY(stringBounder);
-		final double y2 = tile2.getY(stringBounder);
-		final double xx1 = tile1.getMiddleX(stringBounder);
-		final double xx2 = tile2.getMiddleX(stringBounder);
+		final double y1 = tile1.getY();
+		final double y2 = tile2.getY();
+		final double xx1 = tile1.getMiddleX();
+		final double xx2 = tile2.getMiddleX();
 		final double x = (xx1 + xx2) / 2;
 		final double ymin = Math.min(y1, y2);
 		final double ymax = Math.max(y1, y2);

src/net/sourceforge/plantuml/sequencediagram/Message.java

@@ -35,6 +35,9 @@
  */
 package net.sourceforge.plantuml.sequencediagram;
 
+import java.util.Collections;
+import java.util.List;
+
 import net.sourceforge.plantuml.cucadiagram.Display;
 import net.sourceforge.plantuml.skin.ArrowConfiguration;
 import net.sourceforge.plantuml.style.StyleBuilder;
@@ -79,4 +82,14 @@ public final class Message extends AbstractMessage {
 		return p1 == p2;
 	}
 
+	private List<Participant> multicast = Collections.emptyList();
+
+	public void setMulticast(List<Participant> multicast) {
+		this.multicast = multicast;
+	}
+
+	public List<Participant> getMulticast() {
+		return multicast;
+	}
+
 }

src/net/sourceforge/plantuml/sequencediagram/command/CommandArrow.java

@@ -35,6 +35,9 @@
  */
 package net.sourceforge.plantuml.sequencediagram.command;
 
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
 import java.util.StringTokenizer;
 
 import net.sourceforge.plantuml.LineLocation;
@@ -48,6 +51,7 @@ import net.sourceforge.plantuml.command.SingleLineCommand2;
 import net.sourceforge.plantuml.command.regex.IRegex;
 import net.sourceforge.plantuml.command.regex.RegexConcat;
 import net.sourceforge.plantuml.command.regex.RegexLeaf;
+import net.sourceforge.plantuml.command.regex.RegexOptional;
 import net.sourceforge.plantuml.command.regex.RegexOr;
 import net.sourceforge.plantuml.command.regex.RegexResult;
 import net.sourceforge.plantuml.cucadiagram.Display;
@@ -106,9 +110,10 @@ public class CommandArrow extends SingleLineCommand2<SequenceDiagram> {
 						new RegexLeaf("PART2LONG", "[%g]([^%g]+)[%g]"), //
 						new RegexLeaf("PART2LONGCODE", "[%g]([^%g]+)[%g][%s]*as[%s]+([\\p{L}0-9_.@]+)"), //
 						new RegexLeaf("PART2CODELONG", "([\\p{L}0-9_.@]+)[%s]+as[%s]*[%g]([^%g]+)[%g]")), //
+				new RegexLeaf("MULTICAST", "((?:\\s&\\s[\\p{L}0-9_.@]+)*)"), //
 				new RegexLeaf("PART2ANCHOR", ANCHOR), //
 				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("ACTIVATION", "(?:([+*!-]+)?)"), //
+				new RegexLeaf("ACTIVATION", "(?:(\\+\\+|\\*\\*|!!|--|--\\+\\+|\\+\\+--)?)"), //
 				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("LIFECOLOR", "(?:(#\\w+)?)"), //
 				RegexLeaf.spaceZeroOrMore(), //
@@ -118,6 +123,25 @@ public class CommandArrow extends SingleLineCommand2<SequenceDiagram> {
 				RegexLeaf.end());
 	}
 
+	private List<Participant> getMulticasts(SequenceDiagram system, RegexResult arg2) {
+		final String multicast = arg2.get("MULTICAST", 0);
+		if (multicast != null) {
+			final List<Participant> result = new ArrayList<Participant>();
+			for (String s : multicast.split("&")) {
+				s = s.trim();
+				if (s.length() == 0) {
+					continue;
+				}
+				final Participant participant = system.getOrCreateParticipant(s);
+				if (participant != null) {
+					result.add(participant);
+				}
+			}
+			return Collections.unmodifiableList(result);
+		}
+		return Collections.emptyList();
+	}
+
 	private Participant getOrCreateParticipant(SequenceDiagram system, RegexResult arg2, String n) {
 		final String code;
 		final Display display;
@@ -157,7 +181,8 @@ public class CommandArrow extends SingleLineCommand2<SequenceDiagram> {
 	}
 
 	@Override
-	protected CommandExecutionResult executeArg(SequenceDiagram diagram, LineLocation location, RegexResult arg) throws NoSuchColorException {
+	protected CommandExecutionResult executeArg(SequenceDiagram diagram, LineLocation location, RegexResult arg)
+			throws NoSuchColorException {
 
 		Participant p1;
 		Participant p2;
@@ -251,6 +276,7 @@ public class CommandArrow extends SingleLineCommand2<SequenceDiagram> {
 		final String messageNumber = diagram.getNextMessageNumber();
 		final Message msg = new Message(diagram.getSkinParam().getCurrentStyleBuilder(), p1, p2,
 				diagram.manageVariable(labels), config, messageNumber);
+		msg.setMulticast(getMulticasts(diagram, arg));
 		final String url = arg.get("URL", 0);
 		if (url != null) {
 			final UrlBuilder urlBuilder = new UrlBuilder(diagram.getSkinParam().getValue("topurl"), ModeUrl.STRICT);
@@ -272,31 +298,44 @@ public class CommandArrow extends SingleLineCommand2<SequenceDiagram> {
 		}
 		final String s = arg.get("LIFECOLOR", 0);
 
-		final HColor activationColor = s == null ? null
-				: diagram.getSkinParam().getIHtmlColorSet().getColor(s);
+		final HColor activationColor = s == null ? null : diagram.getSkinParam().getIHtmlColorSet().getColor(s);
 
 		if (activationSpec != null) {
-			switch (activationSpec.charAt(0)) {
+			return manageActivations(activationSpec, diagram, p1, p2, activationColor);
+		}
+
+		if (diagram.isAutoactivate() && (config.getHead() == ArrowHead.NORMAL || config.getHead() == ArrowHead.ASYNC)) {
+			if (config.isDotted()) {
+				diagram.activate(p1, LifeEventType.DEACTIVATE, null);
+			} else {
+				diagram.activate(p2, LifeEventType.ACTIVATE, activationColor);
+			}
+		}
+		return CommandExecutionResult.ok();
+	}
+
+	private CommandExecutionResult manageActivations(String spec, SequenceDiagram diagram, Participant p1,
+			Participant p2, HColor activationColor) {
+		switch (spec.charAt(0)) {
+		case '+':
+			diagram.activate(p2, LifeEventType.ACTIVATE, activationColor);
+			break;
+		case '-':
+			diagram.activate(p1, LifeEventType.DEACTIVATE, null);
+			break;
+		case '!':
+			diagram.activate(p2, LifeEventType.DESTROY, null);
+			break;
+		}
+		if (spec.length() == 4) {
+			switch (spec.charAt(2)) {
 			case '+':
 				diagram.activate(p2, LifeEventType.ACTIVATE, activationColor);
 				break;
 			case '-':
 				diagram.activate(p1, LifeEventType.DEACTIVATE, null);
 				break;
-			case '!':
-				diagram.activate(p2, LifeEventType.DESTROY, null);
-				break;
-			default:
-				break;
 			}
-		} else if (diagram.isAutoactivate()
-				&& (config.getHead() == ArrowHead.NORMAL || config.getHead() == ArrowHead.ASYNC)) {
-			if (config.isDotted()) {
-				diagram.activate(p1, LifeEventType.DEACTIVATE, null);
-			} else {
-				diagram.activate(p2, LifeEventType.ACTIVATE, activationColor);
-			}
-
 		}
 		return CommandExecutionResult.ok();
 	}
@@ -313,7 +352,8 @@ public class CommandArrow extends SingleLineCommand2<SequenceDiagram> {
 		return sa.length() + sb.length();
 	}
 
-	public static ArrowConfiguration applyStyle(String arrowStyle, ArrowConfiguration config) throws NoSuchColorException {
+	public static ArrowConfiguration applyStyle(String arrowStyle, ArrowConfiguration config)
+			throws NoSuchColorException {
 		if (arrowStyle == null) {
 			return config;
 		}

src/net/sourceforge/plantuml/sequencediagram/graphic/SequenceDiagramTxtMaker.java

@@ -113,13 +113,13 @@ public class SequenceDiagramTxtMaker implements FileMaker {
 		if (title.isWhite()) {
 			ug2 = ug;
 		} else {
-			ug2 = (UGraphicTxt) ug.apply(UTranslate.dy(title.as().size() + 1));
+			ug2 = (UGraphicTxt) ug.apply(UTranslate.dy(title.asList().size() + 1));
 		}
 		drawableSet.drawU22(ug2, 0, fullDimension.getWidth(), page, diagram.isShowFootbox());
 		if (title.isWhite() == false) {
 			final int widthTitle = StringUtils.getWcWidth(title);
 			final UmlCharArea charArea = ug.getCharArea();
-			charArea.drawStringsLRSimple(title.as(), (int) ((fullDimension.getWidth() - widthTitle) / 2), 0);
+			charArea.drawStringsLRSimple(title.asList(), (int) ((fullDimension.getWidth() - widthTitle) / 2), 0);
 		}
 
 	}

src/net/sourceforge/plantuml/sequencediagram/teoz/AbstractTile.java

@@ -39,18 +39,22 @@ import net.sourceforge.plantuml.graphic.StringBounder;
 import net.sourceforge.plantuml.sequencediagram.AbstractMessage;
 import net.sourceforge.plantuml.sequencediagram.Event;
 
-public abstract class AbstractTile implements Tile {
+public abstract class AbstractTile extends CommonTile implements Tile {
 
-	public double getYPoint(StringBounder stringBounder) {
-		throw new UnsupportedOperationException(getClass().toString());
+	public AbstractTile(StringBounder stringBounder) {
+		super(stringBounder);
 	}
 
-	final public double getZ(StringBounder stringBounder) {
-		final double result = getPreferredHeight(stringBounder) - getYPoint(stringBounder);
+	public double getContactPointRelative() {
+		return -1;
+	}
+
+	final public double getZZZ() {
+		final double result = getPreferredHeight() - getContactPointRelative();
 		assert result >= 0;
 		return result;
 	}
-	
+
 	public boolean matchAnchorV1(String anchor) {
 		final Event event = this.getEvent();
 		if (event instanceof AbstractMessage) {
@@ -62,5 +66,4 @@ public abstract class AbstractTile implements Tile {
 		return false;
 	}
 
-
 }

src/net/sourceforge/plantuml/sequencediagram/teoz/Bordered.java

@@ -35,7 +35,6 @@
  */
 package net.sourceforge.plantuml.sequencediagram.teoz;
 
-
 public interface Bordered {
 
 	public double getBorder1();

src/net/sourceforge/plantuml/sequencediagram/teoz/CommonTile.java

@@ -37,10 +37,23 @@ package net.sourceforge.plantuml.sequencediagram.teoz;
 
 import net.sourceforge.plantuml.graphic.StringBounder;
 
-public interface TileWithUpdateStairs extends Tile {
+public abstract class CommonTile implements Tile {
 
-	public void updateStairs(StringBounder stringBounder, double y);
+	private final StringBounder stringBounder;
 
-	public double getYPoint(StringBounder stringBounder);
+	public CommonTile(StringBounder stringBounder) {
+		this.stringBounder = stringBounder;
+	}
+
+	final public void callbackY(double y) {
+		callbackY_internal(y);
+	}
+
+	public void callbackY_internal(double y) {
+	}
+
+	protected final StringBounder getStringBounder() {
+		return stringBounder;
+	}
 
 }

src/net/sourceforge/plantuml/sequencediagram/teoz/CommunicationExoTile.java

@@ -54,7 +54,7 @@ import net.sourceforge.plantuml.skin.rose.Rose;
 import net.sourceforge.plantuml.ugraphic.UGraphic;
 import net.sourceforge.plantuml.ugraphic.UTranslate;
 
-public class CommunicationExoTile extends AbstractTile implements TileWithUpdateStairs {
+public class CommunicationExoTile extends AbstractTile {
 
 	private final LivingSpace livingSpace;
 	private final MessageExo message;
@@ -68,6 +68,7 @@ public class CommunicationExoTile extends AbstractTile implements TileWithUpdate
 
 	public CommunicationExoTile(LivingSpace livingSpace, MessageExo message, Rose skin, ISkinParam skinParam,
 			TileArguments tileArguments) {
+		super(tileArguments.getStringBounder());
 		this.tileArguments = tileArguments;
 		this.livingSpace = livingSpace;
 		this.message = message;
@@ -76,8 +77,8 @@ public class CommunicationExoTile extends AbstractTile implements TileWithUpdate
 	}
 
 	@Override
-	public double getYPoint(StringBounder stringBounder) {
-		return getComponent(stringBounder).getYPoint(stringBounder);
+	public double getContactPointRelative() {
+		return getComponent(getStringBounder()).getYPoint(getStringBounder());
 	}
 
 	private ArrowComponent getComponent(StringBounder stringBounder) {
@@ -129,9 +130,9 @@ public class CommunicationExoTile extends AbstractTile implements TileWithUpdate
 		return message.isShortArrow();
 	}
 
-	public double getPreferredHeight(StringBounder stringBounder) {
-		final Component comp = getComponent(stringBounder);
-		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
+	public double getPreferredHeight() {
+		final Component comp = getComponent(getStringBounder());
+		final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
 		return dim.getHeight();
 	}
 
@@ -141,15 +142,15 @@ public class CommunicationExoTile extends AbstractTile implements TileWithUpdate
 		return dim.getWidth();
 	}
 
-	public void addConstraints(StringBounder stringBounder) {
-		final Component comp = getComponent(stringBounder);
-		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
+	public void addConstraints() {
+		final Component comp = getComponent(getStringBounder());
+		final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
 		final double width = dim.getWidth();
 
 		if (message.getType().isRightBorder()) {
 
 		} else {
-			livingSpace.getPosC(stringBounder).ensureBiggerThan(tileArguments.getOrigin().addFixed(width));
+			livingSpace.getPosC(getStringBounder()).ensureBiggerThan(tileArguments.getOrigin().addFixed(width));
 		}
 
 		// final Real point1 = getPoint1(stringBounder);
@@ -165,10 +166,11 @@ public class CommunicationExoTile extends AbstractTile implements TileWithUpdate
 		// }
 	}
 
-	public void updateStairs(StringBounder stringBounder, double y) {
-		final ArrowComponent comp = getComponent(stringBounder);
-		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
-		final double arrowY = comp.getStartPoint(stringBounder, dim).getY();
+	@Override
+	public void callbackY_internal(double y) {
+		final ArrowComponent comp = getComponent(getStringBounder());
+		final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
+		final double arrowY = comp.getStartPoint(getStringBounder(), dim).getY();
 
 		livingSpace.addStepForLivebox(getEvent(), y + arrowY);
 
@@ -201,15 +203,15 @@ public class CommunicationExoTile extends AbstractTile implements TileWithUpdate
 		return livingSpace.getPosC(stringBounder).getCurrentValue();
 	}
 
-	public Real getMinX(StringBounder stringBounder) {
-		return getPoint1(stringBounder);
+	public Real getMinX() {
+		return getPoint1(getStringBounder());
 	}
 
-	public Real getMaxX(StringBounder stringBounder) {
-		final Component comp = getComponent(stringBounder);
-		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
+	public Real getMaxX() {
+		final Component comp = getComponent(getStringBounder());
+		final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
 		final double width = dim.getWidth();
-		return getPoint1(stringBounder).addFixed(width);
+		return getPoint1(getStringBounder()).addFixed(width);
 	}
 
 }

src/net/sourceforge/plantuml/sequencediagram/teoz/CommunicationTile.java

@@ -39,12 +39,14 @@ import java.awt.geom.Dimension2D;
 
 import net.sourceforge.plantuml.ISkinParam;
 import net.sourceforge.plantuml.LineParam;
+import net.sourceforge.plantuml.cucadiagram.Display;
 import net.sourceforge.plantuml.graphic.HorizontalAlignment;
 import net.sourceforge.plantuml.graphic.StringBounder;
 import net.sourceforge.plantuml.graphic.VerticalAlignment;
 import net.sourceforge.plantuml.real.Real;
 import net.sourceforge.plantuml.sequencediagram.Event;
 import net.sourceforge.plantuml.sequencediagram.Message;
+import net.sourceforge.plantuml.sequencediagram.Participant;
 import net.sourceforge.plantuml.skin.Area;
 import net.sourceforge.plantuml.skin.ArrowComponent;
 import net.sourceforge.plantuml.skin.ArrowConfiguration;
@@ -56,10 +58,11 @@ import net.sourceforge.plantuml.ugraphic.UGraphic;
 import net.sourceforge.plantuml.ugraphic.UStroke;
 import net.sourceforge.plantuml.ugraphic.UTranslate;
 
-public class CommunicationTile extends AbstractTile implements TileWithUpdateStairs, TileWithCallbackY {
+public class CommunicationTile extends AbstractTile {
 
 	private final LivingSpace livingSpace1;
 	private final LivingSpace livingSpace2;
+	private final LivingSpaces livingSpaces;
 	private final Message message;
 	private final Rose skin;
 	private final ISkinParam skinParam;
@@ -73,13 +76,12 @@ public class CommunicationTile extends AbstractTile implements TileWithUpdateSta
 		return super.toString() + " " + message;
 	}
 
-	public CommunicationTile(LivingSpace livingSpace1, LivingSpace livingSpace2, Message message, Rose skin,
+	public CommunicationTile(StringBounder stringBounder, LivingSpaces livingSpaces, Message message, Rose skin,
 			ISkinParam skinParam) {
-		if (livingSpace1 == livingSpace2) {
-			throw new IllegalArgumentException();
-		}
-		this.livingSpace1 = livingSpace1;
-		this.livingSpace2 = livingSpace2;
+		super(stringBounder);
+		this.livingSpace1 = livingSpaces.get(message.getParticipant1());
+		this.livingSpace2 = livingSpaces.get(message.getParticipant2());
+		this.livingSpaces = livingSpaces;
 		this.message = message;
 		this.skin = skin;
 		this.skinParam = skinParam;
@@ -87,11 +89,6 @@ public class CommunicationTile extends AbstractTile implements TileWithUpdateSta
 		if (message.isCreate()) {
 			livingSpace2.goCreate();
 		}
-		// for (LifeEvent lifeEvent : message.getLiveEvents()) {
-		// System.err.println("lifeEvent = " + lifeEvent);
-		// // livingSpace1.addLifeEvent(this, lifeEvent);
-		// // livingSpace2.addLifeEvent(this, lifeEvent);
-		// }
 	}
 
 	public boolean isReverse(StringBounder stringBounder) {
@@ -117,37 +114,45 @@ public class CommunicationTile extends AbstractTile implements TileWithUpdateSta
 
 	private ArrowComponent getComponent(StringBounder stringBounder) {
 		ArrowConfiguration arrowConfiguration = message.getArrowConfiguration();
-		/*
-		 * if (isSelf()) { arrowConfiguration = arrowConfiguration.self(); } else
-		 */
 		if (isReverse(stringBounder)) {
 			arrowConfiguration = arrowConfiguration.reverse();
 		}
 		arrowConfiguration = arrowConfiguration.withThickness(getArrowThickness());
 
-		final ArrowComponent comp = skin.createComponentArrow(message.getUsedStyles(), arrowConfiguration, skinParam,
+		return skin.createComponentArrow(message.getUsedStyles(), arrowConfiguration, skinParam,
 				message.getLabelNumbered());
-		return comp;
+	}
+
+	private ArrowComponent getComponentMulticast(StringBounder stringBounder, boolean reverse) {
+		ArrowConfiguration arrowConfiguration = message.getArrowConfiguration();
+		if (reverse) {
+			arrowConfiguration = arrowConfiguration.reverse();
+		}
+		arrowConfiguration = arrowConfiguration.withThickness(getArrowThickness());
+
+		return skin.createComponentArrow(message.getUsedStyles(), arrowConfiguration, skinParam, Display.NULL);
 	}
 
 	@Override
-	public double getYPoint(StringBounder stringBounder) {
-		return getComponent(stringBounder).getYPoint(stringBounder);
+	public double getContactPointRelative() {
+		return getComponent(getStringBounder()).getYPoint(getStringBounder());
 	}
 
 	public static final double LIVE_DELTA_SIZE = 5;
 
-	public void updateStairs(StringBounder stringBounder, double y) {
-		final AbstractComponentRoseArrow comp = (AbstractComponentRoseArrow) getComponent(stringBounder);
-		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
-		// final Point2D p2 = comp.getEndPoint(stringBounder, dim);
-		// System.err.println("CommunicationTile::updateStairs y=" + y + " p1=" + p1 + " p2=" + p2 + " dim=" + dim);
-		final double arrowY = comp.getStartPoint(stringBounder, dim).getY();
+	@Override
+	public void callbackY_internal(double y) {
+		if (message.isCreate()) {
+			livingSpace2.goCreate(y);
+		}
+
+		final AbstractComponentRoseArrow comp = (AbstractComponentRoseArrow) getComponent(getStringBounder());
+		final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
+
+		final double arrowY = comp.getStartPoint(getStringBounder(), dim).getY();
 
 		livingSpace1.addStepForLivebox(getEvent(), y + arrowY);
 		livingSpace2.addStepForLivebox(getEvent(), y + arrowY);
-
-		// System.err.println("CommunicationTile::updateStairs msg=" + message + " y=" + y + " arrowY=" + arrowY);
 	}
 
 	public void drawU(UGraphic ug) {
@@ -161,6 +166,7 @@ public class CommunicationTile extends AbstractTile implements TileWithUpdateSta
 		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
 		double x1 = getPoint1(stringBounder).getCurrentValue();
 		double x2 = getPoint2(stringBounder).getCurrentValue();
+		drawMulticast(ug.apply(UTranslate.dy(comp.getPosArrow(stringBounder))));
 
 		final Area area;
 		if (isReverse(stringBounder)) {
@@ -193,24 +199,45 @@ public class CommunicationTile extends AbstractTile implements TileWithUpdateSta
 		comp.drawU(ug, area, (Context2D) ug);
 	}
 
-	public double getPreferredHeight(StringBounder stringBounder) {
-		final Component comp = getComponent(stringBounder);
-		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
+	private void drawMulticast(final UGraphic ug) {
+		if (message.getMulticast().size() == 0) {
+			return;
+		}
+		final StringBounder stringBounder = ug.getStringBounder();
+
+		final double x1 = getPoint1(stringBounder).getCurrentValue();
+		double dy = 2;
+		for (Participant participant : message.getMulticast()) {
+			final double x2 = livingSpaces.get(participant).getPosC(stringBounder).getCurrentValue();
+			final boolean reverse = x2 < x1;
+			final ArrowComponent comp = getComponentMulticast(stringBounder, reverse);
+			final Dimension2D dim = comp.getPreferredDimension(stringBounder);
+			final Area area = new Area(Math.abs(x2 - x1), dim.getHeight());
+			final UGraphic ug2 = ug.apply(UTranslate.dx(Math.min(x1, x2))).apply(UTranslate.dy(dy));
+			dy += 2;
+			comp.drawU(ug2, area, (Context2D) ug2);
+		}
+
+	}
+
+	public double getPreferredHeight() {
+		final Component comp = getComponent(getStringBounder());
+		final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
 		double height = dim.getHeight();
 		if (isCreate()) {
-			height = Math.max(height, livingSpace2.getHeadPreferredDimension(stringBounder).getHeight());
+			height = Math.max(height, livingSpace2.getHeadPreferredDimension(getStringBounder()).getHeight());
 		}
 		return height;
 	}
 
-	public void addConstraints(StringBounder stringBounder) {
-		final Component comp = getComponent(stringBounder);
-		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
+	public void addConstraints() {
+		final Component comp = getComponent(getStringBounder());
+		final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
 		final double width = dim.getWidth();
 
-		Real point1 = getPoint1(stringBounder);
-		Real point2 = getPoint2(stringBounder);
-		if (isReverse(stringBounder)) {
+		Real point1 = getPoint1(getStringBounder());
+		Real point2 = getPoint2(getStringBounder());
+		if (isReverse(getStringBounder())) {
 			final int level1 = livingSpace1.getLevelAt(this, EventsHistoryMode.IGNORE_FUTURE_DEACTIVATE);
 			final int level2 = livingSpace2.getLevelAt(this, EventsHistoryMode.IGNORE_FUTURE_DEACTIVATE);
 			if (level1 > 0) {
@@ -241,24 +268,18 @@ public class CommunicationTile extends AbstractTile implements TileWithUpdateSta
 		return livingSpace2.getPosC(stringBounder);
 	}
 
-	public Real getMinX(StringBounder stringBounder) {
-		if (isReverse(stringBounder)) {
-			return getPoint2(stringBounder);
+	public Real getMinX() {
+		if (isReverse(getStringBounder())) {
+			return getPoint2(getStringBounder());
 		}
-		return getPoint1(stringBounder);
+		return getPoint1(getStringBounder());
 	}
 
-	public Real getMaxX(StringBounder stringBounder) {
-		if (isReverse(stringBounder)) {
-			return getPoint1(stringBounder);
-		}
-		return getPoint2(stringBounder);
-	}
-
-	public void callbackY(double y) {
-		if (message.isCreate()) {
-			livingSpace2.goCreate(y);
+	public Real getMaxX() {
+		if (isReverse(getStringBounder())) {
+			return getPoint1(getStringBounder());
 		}
+		return getPoint2(getStringBounder());
 	}
 
 }

src/net/sourceforge/plantuml/sequencediagram/teoz/CommunicationTileNoteBottom.java

@@ -55,9 +55,9 @@ import net.sourceforge.plantuml.ugraphic.UStroke;
 import net.sourceforge.plantuml.ugraphic.UTranslate;
 import net.sourceforge.plantuml.ugraphic.color.HColor;
 
-public class CommunicationTileNoteBottom extends AbstractTile implements TileWithUpdateStairs, TileWithCallbackY {
+public class CommunicationTileNoteBottom extends AbstractTile {
 
-	private final TileWithUpdateStairs tile;
+	private final Tile tile;
 	private final AbstractMessage message;
 	private final Rose skin;
 	private final ISkinParam skinParam;
@@ -68,12 +68,13 @@ public class CommunicationTileNoteBottom extends AbstractTile implements TileWit
 	}
 
 	@Override
-	public double getYPoint(StringBounder stringBounder) {
-		return tile.getYPoint(stringBounder);
+	public double getContactPointRelative() {
+		return tile.getContactPointRelative();
 	}
 
-	public CommunicationTileNoteBottom(TileWithUpdateStairs tile, AbstractMessage message, Rose skin,
-			ISkinParam skinParam, Note noteOnMessage) {
+	public CommunicationTileNoteBottom(Tile tile, AbstractMessage message, Rose skin, ISkinParam skinParam,
+			Note noteOnMessage) {
+		super(((AbstractTile) tile).getStringBounder());
 		this.tile = tile;
 		this.message = message;
 		this.skin = skin;
@@ -81,8 +82,9 @@ public class CommunicationTileNoteBottom extends AbstractTile implements TileWit
 		this.noteOnMessage = noteOnMessage;
 	}
 
-	public void updateStairs(StringBounder stringBounder, double y) {
-		tile.updateStairs(stringBounder, y);
+	@Override
+	public void callbackY_internal(double y) {
+		tile.callbackY(y);
 	}
 
 	private Component getComponent(StringBounder stringBounder) {
@@ -92,7 +94,7 @@ public class CommunicationTileNoteBottom extends AbstractTile implements TileWit
 	}
 
 	private Real getNotePosition(StringBounder stringBounder) {
-		final Real minX = tile.getMinX(stringBounder);
+		final Real minX = tile.getMinX();
 		return minX;
 	}
 
@@ -103,15 +105,15 @@ public class CommunicationTileNoteBottom extends AbstractTile implements TileWit
 		final Area area = new Area(dim.getWidth(), dim.getHeight());
 		tile.drawU(ug);
 
-		final double middleMsg = (tile.getMinX(stringBounder).getCurrentValue() + tile.getMaxX(stringBounder).getCurrentValue()) / 2;
+		final double middleMsg = (tile.getMinX().getCurrentValue() + tile.getMaxX().getCurrentValue()) / 2;
 
 		final double xNote = getNotePosition(stringBounder).getCurrentValue();
-		final double yNote = tile.getPreferredHeight(stringBounder);
+		final double yNote = tile.getPreferredHeight();
 
 		comp.drawU(ug.apply(new UTranslate(xNote, yNote + spacey)), area, (Context2D) ug);
 
-		drawLine(ug, middleMsg, tile.getYPoint(stringBounder), xNote + dim.getWidth() / 2, yNote + spacey
-				+ Rose.paddingY);
+		drawLine(ug, middleMsg, tile.getContactPointRelative(), xNote + dim.getWidth() / 2,
+				yNote + spacey + Rose.paddingY);
 
 	}
 
@@ -123,33 +125,26 @@ public class CommunicationTileNoteBottom extends AbstractTile implements TileWit
 		final double dx = x2 - x1;
 		final double dy = y2 - y1;
 
-		ug.apply(new UTranslate(x1, y1)).apply(color).apply(new UStroke(2, 2, 1))
-				.draw(new ULine(dx, dy));
+		ug.apply(new UTranslate(x1, y1)).apply(color).apply(new UStroke(2, 2, 1)).draw(new ULine(dx, dy));
 
 	}
 
-	public double getPreferredHeight(StringBounder stringBounder) {
-		final Component comp = getComponent(stringBounder);
-		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
-		return tile.getPreferredHeight(stringBounder) + dim.getHeight() + spacey;
+	public double getPreferredHeight() {
+		final Component comp = getComponent(getStringBounder());
+		final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
+		return tile.getPreferredHeight() + dim.getHeight() + spacey;
 	}
 
-	public void addConstraints(StringBounder stringBounder) {
-		tile.addConstraints(stringBounder);
+	public void addConstraints() {
+		tile.addConstraints();
 	}
 
-	public Real getMinX(StringBounder stringBounder) {
-		return tile.getMinX(stringBounder);
+	public Real getMinX() {
+		return tile.getMinX();
 	}
 
-	public Real getMaxX(StringBounder stringBounder) {
-		return tile.getMaxX(stringBounder);
-	}
-
-	public void callbackY(double y) {
-		if (tile instanceof TileWithCallbackY) {
-			((TileWithCallbackY) tile).callbackY(y);
-		}
+	public Real getMaxX() {
+		return tile.getMaxX();
 	}
 
 }

src/net/sourceforge/plantuml/sequencediagram/teoz/CommunicationTileNoteLeft.java

@@ -51,9 +51,9 @@ import net.sourceforge.plantuml.skin.rose.Rose;
 import net.sourceforge.plantuml.ugraphic.UGraphic;
 import net.sourceforge.plantuml.ugraphic.UTranslate;
 
-public class CommunicationTileNoteLeft extends AbstractTile implements TileWithUpdateStairs, TileWithCallbackY {
+public class CommunicationTileNoteLeft extends AbstractTile {
 
-	private final TileWithUpdateStairs tile;
+	private final Tile tile;
 	private final AbstractMessage message;
 	private final Rose skin;
 	private final ISkinParam skinParam;
@@ -65,12 +65,13 @@ public class CommunicationTileNoteLeft extends AbstractTile implements TileWithU
 	}
 
 	@Override
-	public double getYPoint(StringBounder stringBounder) {
-		return tile.getYPoint(stringBounder);
+	public double getContactPointRelative() {
+		return tile.getContactPointRelative();
 	}
 
-	public CommunicationTileNoteLeft(TileWithUpdateStairs tile, AbstractMessage message, Rose skin,
-			ISkinParam skinParam, LivingSpace livingSpace, Note noteOnMessage) {
+	public CommunicationTileNoteLeft(Tile tile, AbstractMessage message, Rose skin, ISkinParam skinParam,
+			LivingSpace livingSpace, Note noteOnMessage) {
+		super(((AbstractTile) tile).getStringBounder());
 		this.tile = tile;
 		this.message = message;
 		this.skin = skin;
@@ -79,8 +80,9 @@ public class CommunicationTileNoteLeft extends AbstractTile implements TileWithU
 		this.livingSpace = livingSpace;
 	}
 
-	public void updateStairs(StringBounder stringBounder, double y) {
-		tile.updateStairs(stringBounder, y);
+	@Override
+	public void callbackY_internal(double y) {
+		tile.callbackY(y);
 	}
 
 	private Component getComponent(StringBounder stringBounder) {
@@ -106,28 +108,22 @@ public class CommunicationTileNoteLeft extends AbstractTile implements TileWithU
 		comp.drawU(ug.apply(UTranslate.dx(p.getCurrentValue())), area, (Context2D) ug);
 	}
 
-	public double getPreferredHeight(StringBounder stringBounder) {
-		final Component comp = getComponent(stringBounder);
-		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
-		return Math.max(tile.getPreferredHeight(stringBounder), dim.getHeight());
+	public double getPreferredHeight() {
+		final Component comp = getComponent(getStringBounder());
+		final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
+		return Math.max(tile.getPreferredHeight(), dim.getHeight());
 	}
 
-	public void addConstraints(StringBounder stringBounder) {
-		tile.addConstraints(stringBounder);
+	public void addConstraints() {
+		tile.addConstraints();
 	}
 
-	public Real getMinX(StringBounder stringBounder) {
-		return getNotePosition(stringBounder);
+	public Real getMinX() {
+		return getNotePosition(getStringBounder());
 	}
 
-	public Real getMaxX(StringBounder stringBounder) {
-		return tile.getMaxX(stringBounder);
-	}
-
-	public void callbackY(double y) {
-		if (tile instanceof TileWithCallbackY) {
-			((TileWithCallbackY) tile).callbackY(y);
-		}
+	public Real getMaxX() {
+		return tile.getMaxX();
 	}
 
 }

src/net/sourceforge/plantuml/sequencediagram/teoz/CommunicationTileNoteRight.java

@@ -51,9 +51,9 @@ import net.sourceforge.plantuml.skin.rose.Rose;
 import net.sourceforge.plantuml.ugraphic.UGraphic;
 import net.sourceforge.plantuml.ugraphic.UTranslate;
 
-public class CommunicationTileNoteRight extends AbstractTile implements TileWithUpdateStairs, TileWithCallbackY {
+public class CommunicationTileNoteRight extends AbstractTile {
 
-	private final TileWithUpdateStairs tile;
+	private final Tile tile;
 	private final AbstractMessage message;
 	private final Rose skin;
 	private final ISkinParam skinParam;
@@ -69,12 +69,13 @@ public class CommunicationTileNoteRight extends AbstractTile implements TileWith
 	}
 
 	@Override
-	public double getYPoint(StringBounder stringBounder) {
-		return tile.getYPoint(stringBounder);
+	public double getContactPointRelative() {
+		return tile.getContactPointRelative();
 	}
 
-	public CommunicationTileNoteRight(TileWithUpdateStairs tile, AbstractMessage message, Rose skin,
-			ISkinParam skinParam, LivingSpace livingSpace, Note noteOnMessage) {
+	public CommunicationTileNoteRight(Tile tile, AbstractMessage message, Rose skin, ISkinParam skinParam,
+			LivingSpace livingSpace, Note noteOnMessage) {
+		super(((AbstractTile) tile).getStringBounder());
 		this.tile = tile;
 		this.message = message;
 		this.skin = skin;
@@ -83,8 +84,9 @@ public class CommunicationTileNoteRight extends AbstractTile implements TileWith
 		this.livingSpace = livingSpace;
 	}
 
-	public void updateStairs(StringBounder stringBounder, double y) {
-		tile.updateStairs(stringBounder, y);
+	@Override
+	public void callbackY_internal(double y) {
+		tile.callbackY(y);
 	}
 
 	private Component getComponent(StringBounder stringBounder) {
@@ -114,30 +116,24 @@ public class CommunicationTileNoteRight extends AbstractTile implements TileWith
 		comp.drawU(ug.apply(UTranslate.dx(p.getCurrentValue())), area, (Context2D) ug);
 	}
 
-	public double getPreferredHeight(StringBounder stringBounder) {
-		final Component comp = getComponent(stringBounder);
-		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
-		return Math.max(tile.getPreferredHeight(stringBounder), dim.getHeight());
+	public double getPreferredHeight() {
+		final Component comp = getComponent(getStringBounder());
+		final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
+		return Math.max(tile.getPreferredHeight(), dim.getHeight());
 	}
 
-	public void addConstraints(StringBounder stringBounder) {
-		tile.addConstraints(stringBounder);
+	public void addConstraints() {
+		tile.addConstraints();
 	}
 
-	public Real getMinX(StringBounder stringBounder) {
-		return tile.getMinX(stringBounder);
+	public Real getMinX() {
+		return tile.getMinX();
 	}
 
-	public Real getMaxX(StringBounder stringBounder) {
-		final Component comp = getComponent(stringBounder);
-		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
-		return getNotePosition(stringBounder).addFixed(dim.getWidth());
-	}
-
-	public void callbackY(double y) {
-		if (tile instanceof TileWithCallbackY) {
-			((TileWithCallbackY) tile).callbackY(y);
-		}
+	public Real getMaxX() {
+		final Component comp = getComponent(getStringBounder());
+		final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
+		return getNotePosition(getStringBounder()).addFixed(dim.getWidth());
 	}
 
 }

src/net/sourceforge/plantuml/sequencediagram/teoz/CommunicationTileNoteTop.java

@@ -55,9 +55,9 @@ import net.sourceforge.plantuml.ugraphic.UStroke;
 import net.sourceforge.plantuml.ugraphic.UTranslate;
 import net.sourceforge.plantuml.ugraphic.color.HColor;
 
-public class CommunicationTileNoteTop extends AbstractTile implements TileWithUpdateStairs, TileWithCallbackY {
+public class CommunicationTileNoteTop extends AbstractTile {
 
-	private final TileWithUpdateStairs tile;
+	private final Tile tile;
 	private final AbstractMessage message;
 	private final Rose skin;
 	private final ISkinParam skinParam;
@@ -68,12 +68,13 @@ public class CommunicationTileNoteTop extends AbstractTile implements TileWithUp
 	}
 
 	@Override
-	public double getYPoint(StringBounder stringBounder) {
-		return tile.getYPoint(stringBounder);
+	public double getContactPointRelative() {
+		return tile.getContactPointRelative();
 	}
 
-	public CommunicationTileNoteTop(TileWithUpdateStairs tile, AbstractMessage message, Rose skin,
-			ISkinParam skinParam, Note noteOnMessage) {
+	public CommunicationTileNoteTop(Tile tile, AbstractMessage message, Rose skin, ISkinParam skinParam,
+			Note noteOnMessage) {
+		super(((AbstractTile) tile).getStringBounder());
 		this.tile = tile;
 		this.message = message;
 		this.skin = skin;
@@ -81,8 +82,9 @@ public class CommunicationTileNoteTop extends AbstractTile implements TileWithUp
 		this.noteOnMessage = noteOnMessage;
 	}
 
-	public void updateStairs(StringBounder stringBounder, double y) {
-		tile.updateStairs(stringBounder, y);
+	@Override
+	public void callbackY_internal(double y) {
+		tile.callbackY(y);
 	}
 
 	private Component getComponent(StringBounder stringBounder) {
@@ -92,7 +94,7 @@ public class CommunicationTileNoteTop extends AbstractTile implements TileWithUp
 	}
 
 	private Real getNotePosition(StringBounder stringBounder) {
-		final Real minX = tile.getMinX(stringBounder);
+		final Real minX = tile.getMinX();
 		return minX;
 	}
 
@@ -104,14 +106,13 @@ public class CommunicationTileNoteTop extends AbstractTile implements TileWithUp
 
 		tile.drawU(ug.apply(UTranslate.dy(dim.getHeight() + spacey)));
 
-		final double middleMsg = (tile.getMinX(stringBounder).getCurrentValue() + tile.getMaxX(stringBounder)
-				.getCurrentValue()) / 2;
+		final double middleMsg = (tile.getMinX().getCurrentValue() + tile.getMaxX().getCurrentValue()) / 2;
 
 		final double xNote = getNotePosition(stringBounder).getCurrentValue();
 
 		comp.drawU(ug.apply(UTranslate.dx(xNote)), area, (Context2D) ug);
 
-		drawLine(ug, middleMsg, tile.getYPoint(stringBounder) + dim.getHeight() + spacey, xNote + dim.getWidth() / 2,
+		drawLine(ug, middleMsg, tile.getContactPointRelative() + dim.getHeight() + spacey, xNote + dim.getWidth() / 2,
 				dim.getHeight() - 2 * Rose.paddingY);
 
 	}
@@ -124,33 +125,26 @@ public class CommunicationTileNoteTop extends AbstractTile implements TileWithUp
 		final double dx = x2 - x1;
 		final double dy = y2 - y1;
 
-		ug.apply(new UTranslate(x1, y1)).apply(color).apply(new UStroke(2, 2, 1))
-				.draw(new ULine(dx, dy));
+		ug.apply(new UTranslate(x1, y1)).apply(color).apply(new UStroke(2, 2, 1)).draw(new ULine(dx, dy));
 
 	}
 
-	public double getPreferredHeight(StringBounder stringBounder) {
-		final Component comp = getComponent(stringBounder);
-		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
-		return tile.getPreferredHeight(stringBounder) + dim.getHeight() + spacey;
+	public double getPreferredHeight() {
+		final Component comp = getComponent(getStringBounder());
+		final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
+		return tile.getPreferredHeight() + dim.getHeight() + spacey;
 	}
 
-	public void addConstraints(StringBounder stringBounder) {
-		tile.addConstraints(stringBounder);
+	public void addConstraints() {
+		tile.addConstraints();
 	}
 
-	public Real getMinX(StringBounder stringBounder) {
-		return tile.getMinX(stringBounder);
+	public Real getMinX() {
+		return tile.getMinX();
 	}
 
-	public Real getMaxX(StringBounder stringBounder) {
-		return tile.getMaxX(stringBounder);
-	}
-
-	public void callbackY(double y) {
-		if (tile instanceof TileWithCallbackY) {
-			((TileWithCallbackY) tile).callbackY(y);
-		}
+	public Real getMaxX() {
+		return tile.getMaxX();
 	}
 
 }

src/net/sourceforge/plantuml/sequencediagram/teoz/CommunicationTileSelf.java

@@ -54,7 +54,7 @@ import net.sourceforge.plantuml.skin.rose.Rose;
 import net.sourceforge.plantuml.ugraphic.UGraphic;
 import net.sourceforge.plantuml.ugraphic.UTranslate;
 
-public class CommunicationTileSelf extends AbstractTile implements TileWithUpdateStairs {
+public class CommunicationTileSelf extends AbstractTile {
 
 	private final LivingSpace livingSpace1;
 	private final Message message;
@@ -67,12 +67,13 @@ public class CommunicationTileSelf extends AbstractTile implements TileWithUpdat
 	}
 
 	@Override
-	public double getYPoint(StringBounder stringBounder) {
-		return getComponent(stringBounder).getYPoint(stringBounder);
+	public double getContactPointRelative() {
+		return getComponent(getStringBounder()).getYPoint(getStringBounder());
 	}
 
-	public CommunicationTileSelf(LivingSpace livingSpace1, Message message, Rose skin, ISkinParam skinParam,
-			LivingSpaces livingSpaces) {
+	public CommunicationTileSelf(StringBounder stringBounder, LivingSpace livingSpace1, Message message, Rose skin,
+			ISkinParam skinParam, LivingSpaces livingSpaces) {
+		super(stringBounder);
 		this.livingSpace1 = livingSpace1;
 		this.livingSpaces = livingSpaces;
 		this.message = message;
@@ -98,11 +99,12 @@ public class CommunicationTileSelf extends AbstractTile implements TileWithUpdat
 		return comp;
 	}
 
-	public void updateStairs(StringBounder stringBounder, double y) {
-		final ArrowComponent comp = getComponent(stringBounder);
-		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
-		final Point2D p1 = comp.getStartPoint(stringBounder, dim);
-		final Point2D p2 = comp.getEndPoint(stringBounder, dim);
+	@Override
+	public void callbackY_internal(double y) {
+		final ArrowComponent comp = getComponent(getStringBounder());
+		final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
+		final Point2D p1 = comp.getStartPoint(getStringBounder(), dim);
+		final Point2D p2 = comp.getEndPoint(getStringBounder(), dim);
 
 		if (message.isActivate()) {
 			livingSpace1.addStepForLivebox(getEvent(), y + p2.getY());
@@ -139,20 +141,20 @@ public class CommunicationTileSelf extends AbstractTile implements TileWithUpdat
 		comp.drawU(ug, area, (Context2D) ug);
 	}
 
-	public double getPreferredHeight(StringBounder stringBounder) {
-		final Component comp = getComponent(stringBounder);
-		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
+	public double getPreferredHeight() {
+		final Component comp = getComponent(getStringBounder());
+		final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
 		return dim.getHeight();
 	}
 
-	public void addConstraints(StringBounder stringBounder) {
+	public void addConstraints() {
 		// final Component comp = getComponent(stringBounder);
 		// final Dimension2D dim = comp.getPreferredDimension(stringBounder);
 		// final double width = dim.getWidth();
 
 		final LivingSpace next = getNext();
 		if (next != null) {
-			next.getPosC(stringBounder).ensureBiggerThan(getMaxX(stringBounder));
+			next.getPosC(getStringBounder()).ensureBiggerThan(getMaxX());
 		}
 	}
 
@@ -174,15 +176,15 @@ public class CommunicationTileSelf extends AbstractTile implements TileWithUpdat
 		return livingSpace1.getPosC(stringBounder);
 	}
 
-	public Real getMinX(StringBounder stringBounder) {
-		return getPoint1(stringBounder);
+	public Real getMinX() {
+		return getPoint1(getStringBounder());
 	}
 
-	public Real getMaxX(StringBounder stringBounder) {
-		final Component comp = getComponent(stringBounder);
-		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
+	public Real getMaxX() {
+		final Component comp = getComponent(getStringBounder());
+		final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
 		final double width = dim.getWidth();
-		return livingSpace1.getPosC2(stringBounder).addFixed(width);
+		return livingSpace1.getPosC2(getStringBounder()).addFixed(width);
 	}
 
 }

src/net/sourceforge/plantuml/sequencediagram/teoz/CommunicationTileSelfNoteRight.java

@@ -51,7 +51,7 @@ import net.sourceforge.plantuml.skin.rose.Rose;
 import net.sourceforge.plantuml.ugraphic.UGraphic;
 import net.sourceforge.plantuml.ugraphic.UTranslate;
 
-public class CommunicationTileSelfNoteRight extends AbstractTile implements TileWithUpdateStairs {
+public class CommunicationTileSelfNoteRight extends AbstractTile {
 
 	private final CommunicationTileSelf tile;
 	private final Message message;
@@ -62,14 +62,15 @@ public class CommunicationTileSelfNoteRight extends AbstractTile implements Tile
 	public Event getEvent() {
 		return message;
 	}
-	
+
 	@Override
-	public double getYPoint(StringBounder stringBounder) {
-		return tile.getYPoint(stringBounder);
+	public double getContactPointRelative() {
+		return tile.getContactPointRelative();
 	}
 
 	public CommunicationTileSelfNoteRight(CommunicationTileSelf tile, Message message, Rose skin, ISkinParam skinParam,
 			Note noteOnMessage) {
+		super(((AbstractTile) tile).getStringBounder());
 		this.tile = tile;
 		this.message = message;
 		this.skin = skin;
@@ -77,18 +78,19 @@ public class CommunicationTileSelfNoteRight extends AbstractTile implements Tile
 		this.noteOnMessage = noteOnMessage;
 	}
 
-	public void updateStairs(StringBounder stringBounder, double y) {
-		tile.updateStairs(stringBounder, y);
+	@Override
+	public void callbackY_internal(double y) {
+		tile.callbackY(y);
 	}
 
 	private Component getComponent(StringBounder stringBounder) {
-		final Component comp = skin.createComponent(null, ComponentType.NOTE,
-				null, noteOnMessage.getSkinParamBackcolored(skinParam), noteOnMessage.getStrings());
+		final Component comp = skin.createComponent(null, ComponentType.NOTE, null,
+				noteOnMessage.getSkinParamBackcolored(skinParam), noteOnMessage.getStrings());
 		return comp;
 	}
 
 	private Real getNotePosition(StringBounder stringBounder) {
-		return tile.getMaxX(stringBounder);
+		return tile.getMaxX();
 	}
 
 	public void drawU(UGraphic ug) {
@@ -102,24 +104,24 @@ public class CommunicationTileSelfNoteRight extends AbstractTile implements Tile
 		comp.drawU(ug.apply(UTranslate.dx(p.getCurrentValue())), area, (Context2D) ug);
 	}
 
-	public double getPreferredHeight(StringBounder stringBounder) {
-		final Component comp = getComponent(stringBounder);
-		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
-		return Math.max(tile.getPreferredHeight(stringBounder), dim.getHeight());
+	public double getPreferredHeight() {
+		final Component comp = getComponent(getStringBounder());
+		final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
+		return Math.max(tile.getPreferredHeight(), dim.getHeight());
 	}
 
-	public void addConstraints(StringBounder stringBounder) {
-		tile.addConstraints(stringBounder);
+	public void addConstraints() {
+		tile.addConstraints();
 	}
 
-	public Real getMinX(StringBounder stringBounder) {
-		return tile.getMinX(stringBounder);
+	public Real getMinX() {
+		return tile.getMinX();
 	}
 
-	public Real getMaxX(StringBounder stringBounder) {
-		final Component comp = getComponent(stringBounder);
-		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
-		return getNotePosition(stringBounder).addFixed(dim.getWidth());
+	public Real getMaxX() {
+		final Component comp = getComponent(getStringBounder());
+		final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
+		return getNotePosition(getStringBounder()).addFixed(dim.getWidth());
 	}
 
 }

src/net/sourceforge/plantuml/sequencediagram/teoz/DelayTile.java

@@ -49,7 +49,7 @@ import net.sourceforge.plantuml.skin.Context2D;
 import net.sourceforge.plantuml.ugraphic.UGraphic;
 import net.sourceforge.plantuml.ugraphic.UTranslate;
 
-public class DelayTile extends AbstractTile implements Tile, TileWithCallbackY {
+public class DelayTile extends AbstractTile implements Tile {
 
 	private final Delay delay;
 	private final TileArguments tileArguments;
@@ -62,11 +62,13 @@ public class DelayTile extends AbstractTile implements Tile, TileWithCallbackY {
 		return delay;
 	}
 
-	public void callbackY(double y) {
+	@Override
+	public void callbackY_internal(double y) {
 		this.y = y;
 	}
 
 	public DelayTile(Delay delay, TileArguments tileArguments) {
+		super(tileArguments.getStringBounder());
 		this.delay = delay;
 		this.tileArguments = tileArguments;
 	}
@@ -102,27 +104,27 @@ public class DelayTile extends AbstractTile implements Tile, TileWithCallbackY {
 		final Area area = new Area(getPreferredWidth(stringBounder), dim.getHeight());
 		tileArguments.getLivingSpaces().delayOn(y, dim.getHeight());
 
-		ug = ug.apply(UTranslate.dx(getMinX(stringBounder).getCurrentValue()));
+		ug = ug.apply(UTranslate.dx(getMinX().getCurrentValue()));
 		comp.drawU(ug, area, (Context2D) ug);
 	}
 
-	public double getPreferredHeight(StringBounder stringBounder) {
-		final Component comp = getComponent(stringBounder);
-		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
+	public double getPreferredHeight() {
+		final Component comp = getComponent(getStringBounder());
+		final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
 		return dim.getHeight();
 	}
 
-	public void addConstraints(StringBounder stringBounder) {
+	public void addConstraints() {
 	}
 
-	public Real getMinX(StringBounder stringBounder) {
-		init(stringBounder);
-		return this.middle.addFixed(-getPreferredWidth(stringBounder) / 2);
+	public Real getMinX() {
+		init(getStringBounder());
+		return this.middle.addFixed(-getPreferredWidth(getStringBounder()) / 2);
 	}
 
-	public Real getMaxX(StringBounder stringBounder) {
-		init(stringBounder);
-		return this.middle.addFixed(getPreferredWidth(stringBounder) / 2);
+	public Real getMaxX() {
+		init(getStringBounder());
+		return this.middle.addFixed(getPreferredWidth(getStringBounder()) / 2);
 	}
 
 	// private double startingY;

src/net/sourceforge/plantuml/sequencediagram/teoz/DividerTile.java

@@ -63,6 +63,7 @@ public class DividerTile extends AbstractTile implements Tile {
 	}
 
 	public DividerTile(Divider divider, TileArguments tileArguments) {
+		super(tileArguments.getStringBounder());
 		this.tileArguments = tileArguments;
 		this.divider = divider;
 		this.skin = tileArguments.getSkin();
@@ -87,25 +88,25 @@ public class DividerTile extends AbstractTile implements Tile {
 		comp.drawU(ug, area, (Context2D) ug);
 	}
 
-	public double getPreferredHeight(StringBounder stringBounder) {
-		final Component comp = getComponent(stringBounder);
-		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
+	public double getPreferredHeight() {
+		final Component comp = getComponent(getStringBounder());
+		final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
 		return dim.getHeight();
 	}
 
-	public void addConstraints(StringBounder stringBounder) {
+	public void addConstraints() {
 		// final Component comp = getComponent(stringBounder);
 		// final Dimension2D dim = comp.getPreferredDimension(stringBounder);
 		// final double width = dim.getWidth();
 	}
 
-	public Real getMinX(StringBounder stringBounder) {
+	public Real getMinX() {
 		return origin;
 	}
 
-	public Real getMaxX(StringBounder stringBounder) {
-		final Component comp = getComponent(stringBounder);
-		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
+	public Real getMaxX() {
+		final Component comp = getComponent(getStringBounder());
+		final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
 		return origin.addFixed(dim.getWidth());
 	}
 

src/net/sourceforge/plantuml/sequencediagram/teoz/ElseTile.java

@@ -49,7 +49,7 @@ import net.sourceforge.plantuml.skin.ComponentType;
 import net.sourceforge.plantuml.skin.rose.Rose;
 import net.sourceforge.plantuml.ugraphic.UGraphic;
 
-public class ElseTile extends AbstractTile implements TileWithCallbackY {
+public class ElseTile extends AbstractTile {
 
 	private final Rose skin;
 	private final ISkinParam skinParam;
@@ -61,11 +61,12 @@ public class ElseTile extends AbstractTile implements TileWithCallbackY {
 	}
 
 	@Override
-	public double getYPoint(StringBounder stringBounder) {
+	public double getContactPointRelative() {
 		return 0;
 	}
 
 	public ElseTile(GroupingLeaf anElse, Rose skin, ISkinParam skinParam, Tile parent) {
+		super(((AbstractTile) parent).getStringBounder());
 		this.anElse = anElse;
 		this.skin = skin;
 		this.skinParam = skinParam;
@@ -96,14 +97,15 @@ public class ElseTile extends AbstractTile implements TileWithCallbackY {
 		// // final double totalParentHeight = parent.getPreferredHeight(stringBounder);
 		// // height = totalParentHeight - (startingY - y);
 		// // }
-		// final Area area = new Area(max.getCurrentValue() - min.getCurrentValue(), height);
+		// final Area area = new Area(max.getCurrentValue() - min.getCurrentValue(),
+		// height);
 		// ug = ug.apply(new UTranslate(min.getCurrentValue(), 0));
 		// comp.drawU(ug, area, context);
 	}
 
-	public double getPreferredHeight(StringBounder stringBounder) {
-		final Component comp = getComponent(stringBounder);
-		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
+	public double getPreferredHeight() {
+		final Component comp = getComponent(getStringBounder());
+		final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
 
 		double height = dim.getHeight();
 		if (anElse.getComment() != null) {
@@ -112,25 +114,26 @@ public class ElseTile extends AbstractTile implements TileWithCallbackY {
 		return height;
 	}
 
-	public void addConstraints(StringBounder stringBounder) {
+	public void addConstraints() {
 		// final Component comp = getComponent(stringBounder);
 		// final Dimension2D dim = comp.getPreferredDimension(stringBounder);
 		// final double width = dim.getWidth();
 	}
 
-	public Real getMinX(StringBounder stringBounder) {
-		return parent.getMinX(stringBounder);
+	public Real getMinX() {
+		return parent.getMinX();
 	}
 
-	public Real getMaxX(StringBounder stringBounder) {
-		final Component comp = getComponent(stringBounder);
-		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
-		return getMinX(stringBounder).addFixed(dim.getWidth());
+	public Real getMaxX() {
+		final Component comp = getComponent(getStringBounder());
+		final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
+		return getMinX().addFixed(dim.getWidth());
 	}
 
 	private double y;
 
-	public void callbackY(double y) {
+	@Override
+	public void callbackY_internal(double y) {
 		this.y = y;
 	}
 

src/net/sourceforge/plantuml/sequencediagram/teoz/EmptyTile.java

@@ -36,7 +36,6 @@
 package net.sourceforge.plantuml.sequencediagram.teoz;
 
 import net.sourceforge.plantuml.Url;
-import net.sourceforge.plantuml.graphic.StringBounder;
 import net.sourceforge.plantuml.real.Real;
 import net.sourceforge.plantuml.sequencediagram.Event;
 import net.sourceforge.plantuml.sequencediagram.Participant;
@@ -48,6 +47,7 @@ public class EmptyTile extends AbstractTile implements Tile {
 	private final Tile position;
 
 	public EmptyTile(double height, Tile position) {
+		super(((AbstractTile) position).getStringBounder());
 		this.height = height;
 		this.position = position;
 	}
@@ -55,19 +55,19 @@ public class EmptyTile extends AbstractTile implements Tile {
 	public void drawU(UGraphic ug) {
 	}
 
-	public double getPreferredHeight(StringBounder stringBounder) {
+	public double getPreferredHeight() {
 		return height;
 	}
 
-	public void addConstraints(StringBounder stringBounder) {
+	public void addConstraints() {
 	}
 
-	public Real getMinX(StringBounder stringBounder) {
-		return position.getMinX(stringBounder);
+	public Real getMinX() {
+		return position.getMinX();
 	}
 
-	public Real getMaxX(StringBounder stringBounder) {
-		return position.getMaxX(stringBounder);
+	public Real getMaxX() {
+		return position.getMaxX();
 	}
 
 	public Event getEvent() {

src/net/sourceforge/plantuml/sequencediagram/teoz/Englobers.java

@@ -64,8 +64,8 @@ public class Englobers {
 				pending.add(p);
 				continue;
 			}
-			pending = Englober.createTeoz(englober, p, tileArguments, tileArguments.getSkinParam()
-					.getCurrentStyleBuilder());
+			pending = Englober.createTeoz(englober, p, tileArguments,
+					tileArguments.getSkinParam().getCurrentStyleBuilder());
 			englobers.add(pending);
 		}
 	}

src/net/sourceforge/plantuml/sequencediagram/teoz/EventsHistory.java

@@ -69,7 +69,8 @@ public class EventsHistory {
 
 	public int getLevelAt(Event event, EventsHistoryMode mode) {
 		final int result = getLevelAtInternal(event, mode);
-		// System.err.println("EventsHistory::getLevelAt " + mode + " " + result + " " + event);
+		// System.err.println("EventsHistory::getLevelAt " + mode + " " + result + " " +
+		// event);
 		return result;
 	}
 
@@ -181,7 +182,8 @@ public class EventsHistory {
 		int value = 0;
 		for (Event event : events) {
 			final Double position = ys3.get(event);
-			// System.err.println("EventsHistory::getStairs event=" + event + " position=" + position);
+			// System.err.println("EventsHistory::getStairs event=" + event + " position=" +
+			// position);
 			if (position != null) {
 				assert position <= totalHeight : "position=" + position + " totalHeight=" + totalHeight;
 				value = getLevelAt(event, EventsHistoryMode.CONSIDERE_FUTURE_DEACTIVATE);
@@ -190,7 +192,8 @@ public class EventsHistory {
 						activateColor);
 			}
 		}
-		// System.err.println("EventsHistory::getStairs finishing totalHeight=" + totalHeight);
+		// System.err.println("EventsHistory::getStairs finishing totalHeight=" +
+		// totalHeight);
 		result.addStep(new StairsPosition(totalHeight, false), value, null);
 		// System.err.println("EventsHistory::getStairs " + p + " result=" + result);
 		return result;

src/net/sourceforge/plantuml/sequencediagram/teoz/GroupingTile.java

@@ -59,12 +59,13 @@ import net.sourceforge.plantuml.skin.rose.Rose;
 import net.sourceforge.plantuml.ugraphic.UGraphic;
 import net.sourceforge.plantuml.ugraphic.UTranslate;
 
-public class GroupingTile extends AbstractTile implements TileWithCallbackY {
+public class GroupingTile extends AbstractTile {
 
 	private static final int EXTERNAL_MARGINX1 = 3;
 	private static final int EXTERNAL_MARGINX2 = 9;
 	private static final int MARGINX = 16;
-	private static final int MARGINY = 10;
+	// private static final int MARGINY = 10;
+	private static final int MARGINY_MAGIC = 20;
 	private List<Tile> tiles = new ArrayList<Tile>();
 	private final Real min;
 	private final Real max;
@@ -83,24 +84,27 @@ public class GroupingTile extends AbstractTile implements TileWithCallbackY {
 	}
 
 	@Override
-	public double getYPoint(StringBounder stringBounder) {
+	public double getContactPointRelative() {
 		return 0;
 	}
 
-	public GroupingTile(Iterator<Event> it, GroupingStart start, TileArguments tileArgumentsBachColorChanged,
+	public GroupingTile(Iterator<Event> it, GroupingStart start, TileArguments tileArgumentsBackColorChanged,
 			TileArguments tileArgumentsOriginal) {
+		super(tileArgumentsBackColorChanged.getStringBounder());
 		final StringBounder stringBounder = tileArgumentsOriginal.getStringBounder();
 		this.start = start;
 		this.display = start.getTitle().equals("group") ? Display.create(start.getComment())
 				: Display.create(start.getTitle(), start.getComment());
 		this.skin = tileArgumentsOriginal.getSkin();
 		// this.skinParam = tileArgumentsOriginal.getSkinParam();
-		this.skinParam = tileArgumentsBachColorChanged.getSkinParam();
+		this.skinParam = tileArgumentsBackColorChanged.getSkinParam();
 
 		final List<Real> min2 = new ArrayList<Real>();
 		final List<Real> max2 = new ArrayList<Real>();
 
 		final List<Tile> allElses = new ArrayList<Tile>();
+		final Dimension2D dim1 = getPreferredDimensionIfEmpty(stringBounder);
+
 		while (it.hasNext()) {
 			final Event ev = it.next();
 			if (ev instanceof GroupingLeaf && ((Grouping) ev).getType() == GroupingType.END) {
@@ -110,31 +114,31 @@ public class GroupingTile extends AbstractTile implements TileWithCallbackY {
 				tiles.add(tile);
 			}
 		}
-		tiles = mergeParallel(tiles);
+
+		tiles = mergeParallel(getStringBounder(), tiles);
+
 		for (Tile tile : tiles) {
-			bodyHeight += tile.getPreferredHeight(stringBounder);
+			bodyHeight += tile.getPreferredHeight();
 			final Event ev = tile.getEvent();
 			if (ev instanceof GroupingLeaf && ((Grouping) ev).getType() == GroupingType.ELSE) {
 				allElses.add(tile);
 				continue;
 			}
-			min2.add(tile.getMinX(stringBounder).addFixed(-MARGINX));
-			final Real m = tile.getMaxX(stringBounder);
+			min2.add(tile.getMinX().addFixed(-MARGINX));
+			final Real m = tile.getMaxX();
 			// max2.add(m == tileArgumentsOriginal.getOmega() ? m : m.addFixed(MARGINX));
 			max2.add(m.addFixed(MARGINX));
 		}
-		final Dimension2D dim1 = getPreferredDimensionIfEmpty(stringBounder);
 		final double width = dim1.getWidth();
 		if (min2.size() == 0) {
 			min2.add(tileArgumentsOriginal.getOrigin());
 		}
 		this.min = RealUtils.min(min2);
 		for (Tile anElse : allElses) {
-			max2.add(anElse.getMaxX(stringBounder));
+			max2.add(anElse.getMaxX());
 		}
 		max2.add(this.min.addFixed(width + 16));
 		this.max = RealUtils.max(max2);
-
 	}
 
 	private Component getComponent(StringBounder stringBounder) {
@@ -154,36 +158,31 @@ public class GroupingTile extends AbstractTile implements TileWithCallbackY {
 		final Dimension2D dim1 = getPreferredDimensionIfEmpty(stringBounder);
 		final Area area = new Area(max.getCurrentValue() - min.getCurrentValue(), getTotalHeight(stringBounder));
 
-		if (ug instanceof LiveBoxFinder == false) {
-			comp.drawU(ug.apply(UTranslate.dx(min.getCurrentValue())), area, (Context2D) ug);
-			drawAllElses(ug);
-		}
-		// ug.apply(UChangeBackColor.nnn(HtmlColorUtils.LIGHT_GRAY)).draw(new
-		// URectangle(area.getDimensionToUse()));
+		comp.drawU(ug.apply(UTranslate.dx(min.getCurrentValue())), area, (Context2D) ug);
+		drawAllElses(ug);
 
-		double h = dim1.getHeight() + MARGINY / 2;
+		double h = dim1.getHeight() + MARGINY_MAGIC / 2;
 		for (Tile tile : tiles) {
-			ug.apply(UTranslate.dy(h)).draw(tile);
-			final double preferredHeight = tile.getPreferredHeight(stringBounder);
+			tile.drawU(ug.apply(UTranslate.dy(h)));
+			final double preferredHeight = tile.getPreferredHeight();
 			h += preferredHeight;
 		}
 	}
 
 	private double getTotalHeight(StringBounder stringBounder) {
 		final Dimension2D dimIfEmpty = getPreferredDimensionIfEmpty(stringBounder);
-		return bodyHeight + dimIfEmpty.getHeight() + MARGINY / 2;
+		return bodyHeight + dimIfEmpty.getHeight() + MARGINY_MAGIC / 2;
 	}
 
 	private void drawAllElses(UGraphic ug) {
 		final StringBounder stringBounder = ug.getStringBounder();
 		final double totalHeight = getTotalHeight(stringBounder);
-		// final double suppHeight =
-		// getPreferredDimensionIfEmpty(stringBounder).getHeight() + MARGINY / 2;
+
 		final List<Double> ys = new ArrayList<Double>();
 		for (Tile tile : tiles) {
 			if (tile instanceof ElseTile) {
 				final ElseTile elseTile = (ElseTile) tile;
-				ys.add(elseTile.getCallbackY() - y + MARGINY / 2/* suppHeight */);
+				ys.add(elseTile.getCallbackY() - y + MARGINY_MAGIC / 2);
 			}
 		}
 		ys.add(totalHeight);
@@ -199,34 +198,35 @@ public class GroupingTile extends AbstractTile implements TileWithCallbackY {
 		}
 	}
 
-	public double getPreferredHeight(StringBounder stringBounder) {
-		final Dimension2D dim1 = getPreferredDimensionIfEmpty(stringBounder);
-		return dim1.getHeight() + bodyHeight + MARGINY;
+	public double getPreferredHeight() {
+		final Dimension2D dim1 = getPreferredDimensionIfEmpty(getStringBounder());
+		return dim1.getHeight() + bodyHeight + MARGINY_MAGIC;
 	}
 
-	public void addConstraints(StringBounder stringBounder) {
+	public void addConstraints() {
 		for (Tile tile : tiles) {
-			tile.addConstraints(stringBounder);
+			tile.addConstraints();
 		}
 	}
 
-	public Real getMinX(StringBounder stringBounder) {
+	public Real getMinX() {
 		return min.addFixed(-EXTERNAL_MARGINX1);
 	}
 
-	public Real getMaxX(StringBounder stringBounder) {
+	public Real getMaxX() {
 		return max.addFixed(EXTERNAL_MARGINX2);
 	}
 
 	private double y;
 
-	public void callbackY(double y) {
+	@Override
+	public void callbackY_internal(double y) {
 		this.y = y;
 	}
 
 	public static double fillPositionelTiles(StringBounder stringBounder, double y, List<Tile> tiles,
 			final List<YPositionedTile> local, List<YPositionedTile> full) {
-		for (Tile tile : mergeParallel(tiles)) {
+		for (Tile tile : mergeParallel(stringBounder, tiles)) {
 			final YPositionedTile ytile = new YPositionedTile(tile, y);
 			local.add(ytile);
 			full.add(ytile);
@@ -236,7 +236,7 @@ public class GroupingTile extends AbstractTile implements TileWithCallbackY {
 				final ArrayList<YPositionedTile> local2 = new ArrayList<YPositionedTile>();
 				fillPositionelTiles(stringBounder, y + headerHeight, groupingTile.tiles, local2, full);
 			}
-			y += tile.getPreferredHeight(stringBounder);
+			y += tile.getPreferredHeight();
 		}
 		return y;
 
@@ -246,14 +246,14 @@ public class GroupingTile extends AbstractTile implements TileWithCallbackY {
 		return getPreferredDimensionIfEmpty(stringBounder).getHeight() + 10;
 	}
 
-	private static List<Tile> mergeParallel(List<Tile> tiles) {
+	private static List<Tile> mergeParallel(StringBounder stringBounder, List<Tile> tiles) {
 		TileParallel pending = null;
 		tiles = removeEmptyCloseToParallel(tiles);
 		final List<Tile> result = new ArrayList<Tile>();
 		for (Tile tile : tiles) {
 			if (isParallel(tile)) {
 				if (pending == null) {
-					pending = new TileParallel();
+					pending = new TileParallel(stringBounder);
 					final Tile tmp = result.get(result.size() - 1);
 					if (tmp instanceof LifeEventTile) {
 						pending.add(result.get(result.size() - 2));
@@ -293,7 +293,7 @@ public class GroupingTile extends AbstractTile implements TileWithCallbackY {
 		}
 	}
 
-	private static boolean isParallel(Tile tile) {
+	public static boolean isParallel(Tile tile) {
 		return tile instanceof TileParallel == false && tile.getEvent().isParallel();
 	}
 

src/net/sourceforge/plantuml/sequencediagram/teoz/HSpaceTile.java

@@ -35,7 +35,6 @@
  */
 package net.sourceforge.plantuml.sequencediagram.teoz;
 
-import net.sourceforge.plantuml.graphic.StringBounder;
 import net.sourceforge.plantuml.real.Real;
 import net.sourceforge.plantuml.sequencediagram.Event;
 import net.sourceforge.plantuml.sequencediagram.HSpace;
@@ -51,6 +50,7 @@ public class HSpaceTile extends AbstractTile implements Tile {
 	}
 
 	public HSpaceTile(HSpace hspace, TileArguments tileArguments) {
+		super(tileArguments.getStringBounder());
 		this.hspace = hspace;
 		this.origin = tileArguments.getOrigin();
 	}
@@ -58,18 +58,18 @@ public class HSpaceTile extends AbstractTile implements Tile {
 	public void drawU(UGraphic ug) {
 	}
 
-	public double getPreferredHeight(StringBounder stringBounder) {
+	public double getPreferredHeight() {
 		return hspace.getPixel();
 	}
 
-	public void addConstraints(StringBounder stringBounder) {
+	public void addConstraints() {
 	}
 
-	public Real getMinX(StringBounder stringBounder) {
+	public Real getMinX() {
 		return origin;
 	}
 
-	public Real getMaxX(StringBounder stringBounder) {
+	public Real getMaxX() {
 		return origin.addFixed(10);
 	}
 

src/net/sourceforge/plantuml/sequencediagram/teoz/LifeEventTile.java

@@ -38,7 +38,6 @@ package net.sourceforge.plantuml.sequencediagram.teoz;
 import java.awt.geom.Dimension2D;
 
 import net.sourceforge.plantuml.ISkinParam;
-import net.sourceforge.plantuml.graphic.StringBounder;
 import net.sourceforge.plantuml.real.Real;
 import net.sourceforge.plantuml.real.RealUtils;
 import net.sourceforge.plantuml.sequencediagram.Event;
@@ -51,7 +50,7 @@ import net.sourceforge.plantuml.skin.rose.Rose;
 import net.sourceforge.plantuml.ugraphic.UGraphic;
 import net.sourceforge.plantuml.ugraphic.UTranslate;
 
-public class LifeEventTile extends AbstractTile implements TileWithUpdateStairs {
+public class LifeEventTile extends AbstractTile {
 
 	private final LifeEvent lifeEvent;
 	private final TileArguments tileArguments;
@@ -59,22 +58,25 @@ public class LifeEventTile extends AbstractTile implements TileWithUpdateStairs
 	private final Rose skin;
 	private final ISkinParam skinParam;
 
-	public void updateStairs(StringBounder stringBounder, double y) {
-		// System.err.println("LifeEventTile::updateStairs " + lifeEvent + " " + livingSpace.getParticipant() + " y=" + y);
+	@Override
+	public void callbackY_internal(double y) {
+		// System.err.println("LifeEventTile::updateStairs " + lifeEvent + " " +
+		// livingSpace.getParticipant() + " y=" + y);
 		livingSpace.addStepForLivebox(getEvent(), y);
 	}
 
 	public Event getEvent() {
 		return lifeEvent;
 	}
-	
+
 	@Override
-	public double getYPoint(StringBounder stringBounder) {
+	public double getContactPointRelative() {
 		return 0;
 	}
 
 	public LifeEventTile(LifeEvent lifeEvent, TileArguments tileArguments, LivingSpace livingSpace, Rose skin,
 			ISkinParam skinParam) {
+		super(tileArguments.getStringBounder());
 		this.lifeEvent = lifeEvent;
 		this.tileArguments = tileArguments;
 		this.livingSpace = livingSpace;
@@ -95,29 +97,30 @@ public class LifeEventTile extends AbstractTile implements TileWithUpdateStairs
 		return lifeEvent.getMessage() == null && lifeEvent.getType() == LifeEventType.DESTROY;
 	}
 
-	public double getPreferredHeight(StringBounder stringBounder) {
+	public double getPreferredHeight() {
 //		if (lifeEvent.isActivate()) {
 //			return 20;
 //		}
 		if (isDestroyWithoutMessage()) {
 			final Component cross = skin.createComponent(null, ComponentType.DESTROY, null, skinParam, null);
-			final Dimension2D dimCross = cross.getPreferredDimension(stringBounder);
+			final Dimension2D dimCross = cross.getPreferredDimension(getStringBounder());
 			return dimCross.getHeight();
 		}
 		return 0;
 	}
 
-	public void addConstraints(StringBounder stringBounder) {
+	public void addConstraints() {
 	}
 
-	public Real getMinX(StringBounder stringBounder) {
+	public Real getMinX() {
 		// return tileArguments.getLivingSpace(lifeEvent.getParticipant()).getPosB();
 		return livingSpace.getPosB();
 	}
 
-	public Real getMaxX(StringBounder stringBounder) {
-		// final LivingSpace livingSpace2 = tileArguments.getLivingSpace(lifeEvent.getParticipant());
-		return RealUtils.max(livingSpace.getPosD(stringBounder), livingSpace.getPosC2(stringBounder));
+	public Real getMaxX() {
+		// final LivingSpace livingSpace2 =
+		// tileArguments.getLivingSpace(lifeEvent.getParticipant());
+		return RealUtils.max(livingSpace.getPosD(getStringBounder()), livingSpace.getPosC2(getStringBounder()));
 	}
 
 }

src/net/sourceforge/plantuml/sequencediagram/teoz/LiveBoxFinder.java

@@ -1,127 +0,0 @@
-/* ========================================================================
- * PlantUML : a free UML diagram generator
- * ========================================================================
- *
- * (C) Copyright 2009-2020, 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.sequencediagram.teoz;
-
-import net.sourceforge.plantuml.graphic.StringBounder;
-import net.sourceforge.plantuml.ugraphic.UBackground;
-import net.sourceforge.plantuml.ugraphic.UChange;
-import net.sourceforge.plantuml.ugraphic.UGraphic;
-import net.sourceforge.plantuml.ugraphic.UGraphicNo;
-import net.sourceforge.plantuml.ugraphic.UParam;
-import net.sourceforge.plantuml.ugraphic.UParamNull;
-import net.sourceforge.plantuml.ugraphic.UShape;
-import net.sourceforge.plantuml.ugraphic.UStroke;
-import net.sourceforge.plantuml.ugraphic.UTranslate;
-import net.sourceforge.plantuml.ugraphic.color.ColorMapper;
-import net.sourceforge.plantuml.ugraphic.color.ColorMapperIdentity;
-import net.sourceforge.plantuml.ugraphic.color.HColor;
-
-public class LiveBoxFinder extends UGraphicNo implements UGraphic {
-
-	public boolean matchesProperty(String propertyName) {
-		return false;
-	}
-
-	public double dpiFactor() {
-		return 1;
-	}
-
-	public UGraphic apply(UChange change) {
-		if (change instanceof UTranslate) {
-			return new LiveBoxFinder(stringBounder, translate.compose((UTranslate) change));
-		} else if (change instanceof UStroke) {
-			return new LiveBoxFinder(this);
-		} else if (change instanceof UBackground) {
-			return new LiveBoxFinder(this);
-		} else if (change instanceof HColor) {
-			return new LiveBoxFinder(this);
-		}
-		throw new UnsupportedOperationException();
-	}
-
-	private final StringBounder stringBounder;
-	private final UTranslate translate;
-
-	public LiveBoxFinder(StringBounder stringBounder) {
-		this(stringBounder, new UTranslate());
-	}
-
-	private LiveBoxFinder(StringBounder stringBounder, UTranslate translate) {
-		this.stringBounder = stringBounder;
-		this.translate = translate;
-	}
-
-	private LiveBoxFinder(LiveBoxFinder other) {
-		this(other.stringBounder, other.translate);
-	}
-
-	public StringBounder getStringBounder() {
-		return stringBounder;
-	}
-
-	public UParam getParam() {
-		return new UParamNull();
-	}
-
-	public void draw(UShape shape) {
-		final double x = translate.getDx();
-		final double y = translate.getDy();
-		if (shape instanceof GroupingTile) {
-			((GroupingTile) shape).drawU(this);
-		} else if (shape instanceof TileWithUpdateStairs) {
-			((TileWithUpdateStairs) shape).updateStairs(stringBounder, y);
-			// } else if (shape instanceof EmptyTile) {
-			// // Nothing ?
-			// } else if (shape instanceof TileParallel) {
-			// // Nothing ?
-			// } else if (shape instanceof NotesTile) {
-			// // Nothing ?
-			// } else if (shape instanceof Tile) {
-			// Log.info("OtherTile " + shape);
-		} else {
-			// Nothing ?
-			// throw new UnsupportedOperationException(shape.getClass().getName());
-		}
-	}
-
-	public ColorMapper getColorMapper() {
-		return new ColorMapperIdentity();
-	}
-
-	public void flushUg() {
-	}
-
-}

src/net/sourceforge/plantuml/sequencediagram/teoz/LiveBoxesDrawer.java

@@ -68,10 +68,13 @@ public class LiveBoxesDrawer {
 	private final Collection<Segment> delays;
 
 	public LiveBoxesDrawer(Context2D context, Rose skin, ISkinParam skinParam, Map<Double, Double> delays) {
-		this.cross = skin.createComponent(new Style[] { ComponentType.DESTROY.getDefaultStyleDefinition()
-				.getMergedStyle(skinParam.getCurrentStyleBuilder()) }, ComponentType.DESTROY, null, skinParam, null);
-		this.compForWidth = skin.createComponent(new Style[] { ComponentType.ALIVE_BOX_CLOSE_CLOSE
-				.getDefaultStyleDefinition().getMergedStyle(skinParam.getCurrentStyleBuilder()) },
+		this.cross = skin.createComponent(
+				new Style[] { ComponentType.DESTROY.getDefaultStyleDefinition()
+						.getMergedStyle(skinParam.getCurrentStyleBuilder()) },
+				ComponentType.DESTROY, null, skinParam, null);
+		this.compForWidth = skin.createComponent(
+				new Style[] { ComponentType.ALIVE_BOX_CLOSE_CLOSE.getDefaultStyleDefinition()
+						.getMergedStyle(skinParam.getCurrentStyleBuilder()) },
 				ComponentType.ALIVE_BOX_CLOSE_CLOSE, null, skinParam, null);
 		this.context = context;
 		this.skin = skin;
@@ -121,8 +124,8 @@ public class LiveBoxesDrawer {
 	private void drawInternal(UGraphic ug, StairsPosition yposition, double ya, double yb, ComponentType type) {
 		final double width = getWidth(ug.getStringBounder());
 		final Area area = new Area(width, yb - ya);
-		ISkinParam skinParam2 = new SkinParamBackcolored(skinParam, symbolContext == null ? null
-				: symbolContext.getBackColor());
+		ISkinParam skinParam2 = new SkinParamBackcolored(skinParam,
+				symbolContext == null ? null : symbolContext.getBackColor());
 		Style style = type.getDefaultStyleDefinition().getMergedStyle(skinParam.getCurrentStyleBuilder());
 		if (style != null) {
 			style = style.eventuallyOverride(symbolContext);

src/net/sourceforge/plantuml/sequencediagram/teoz/NewpageTile.java

@@ -35,23 +35,23 @@
  */
 package net.sourceforge.plantuml.sequencediagram.teoz;
 
-import net.sourceforge.plantuml.graphic.StringBounder;
 import net.sourceforge.plantuml.real.Real;
 import net.sourceforge.plantuml.sequencediagram.Event;
 import net.sourceforge.plantuml.sequencediagram.Newpage;
 import net.sourceforge.plantuml.ugraphic.UGraphic;
 
-public class NewpageTile extends AbstractTile implements TileWithCallbackY {
+public class NewpageTile extends AbstractTile {
 
 	private final Newpage newpage;
 	private final TileArguments tileArguments;
 
 	@Override
-	public double getYPoint(StringBounder stringBounder) {
+	public double getContactPointRelative() {
 		return 0;
 	}
 
 	public NewpageTile(Newpage newpage, TileArguments tileArguments) {
+		super(tileArguments.getStringBounder());
 		this.newpage = newpage;
 		this.tileArguments = tileArguments;
 	}
@@ -59,24 +59,25 @@ public class NewpageTile extends AbstractTile implements TileWithCallbackY {
 	public void drawU(UGraphic ug) {
 	}
 
-	public double getPreferredHeight(StringBounder stringBounder) {
+	public double getPreferredHeight() {
 		return 0;
 	}
 
-	public void addConstraints(StringBounder stringBounder) {
+	public void addConstraints() {
 	}
 
-	public Real getMinX(StringBounder stringBounder) {
+	public Real getMinX() {
 		return tileArguments.getOrigin();
 	}
 
-	public Real getMaxX(StringBounder stringBounder) {
+	public Real getMaxX() {
 		return tileArguments.getOrigin();
 	}
 
 	private double y;
 
-	public void callbackY(double y) {
+	@Override
+	public void callbackY_internal(double y) {
 		this.y = y;
 	}
 

src/net/sourceforge/plantuml/sequencediagram/teoz/NoteTile.java

@@ -66,11 +66,13 @@ public class NoteTile extends AbstractTile implements Tile {
 	}
 
 	@Override
-	public double getYPoint(StringBounder stringBounder) {
-		return getComponent(stringBounder).getPreferredHeight(stringBounder) / 2;
+	public double getContactPointRelative() {
+		return getComponent(getStringBounder()).getPreferredHeight(getStringBounder()) / 2;
 	}
 
-	public NoteTile(LivingSpace livingSpace1, LivingSpace livingSpace2, Note note, Rose skin, ISkinParam skinParam) {
+	public NoteTile(StringBounder stringBounder, LivingSpace livingSpace1, LivingSpace livingSpace2, Note note,
+			Rose skin, ISkinParam skinParam) {
+		super(stringBounder);
 		this.livingSpace1 = livingSpace1;
 		this.livingSpace2 = livingSpace2;
 		this.note = note;
@@ -140,20 +142,20 @@ public class NoteTile extends AbstractTile implements Tile {
 		}
 	}
 
-	public double getPreferredHeight(StringBounder stringBounder) {
-		final Component comp = getComponent(stringBounder);
-		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
+	public double getPreferredHeight() {
+		final Component comp = getComponent(getStringBounder());
+		final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
 		return dim.getHeight();
 	}
 
-	public void addConstraints(StringBounder stringBounder) {
+	public void addConstraints() {
 		// final Component comp = getComponent(stringBounder);
 		// final Dimension2D dim = comp.getPreferredDimension(stringBounder);
 		// final double width = dim.getWidth();
 	}
 
-	public Real getMinX(StringBounder stringBounder) {
-		final Real result = getX(stringBounder);
+	public Real getMinX() {
+		final Real result = getX(getStringBounder());
 		if (note.getPosition() == NotePosition.OVER_SEVERAL) {
 			final Real x1 = livingSpace1.getPosB();
 			return RealUtils.min(result, x1);
@@ -161,10 +163,10 @@ public class NoteTile extends AbstractTile implements Tile {
 		return result;
 	}
 
-	public Real getMaxX(StringBounder stringBounder) {
-		final Real result = getX(stringBounder).addFixed(getUsedWidth(stringBounder));
+	public Real getMaxX() {
+		final Real result = getX(getStringBounder()).addFixed(getUsedWidth(getStringBounder()));
 		if (note.getPosition() == NotePosition.OVER_SEVERAL) {
-			final Real x2 = livingSpace2.getPosD(stringBounder);
+			final Real x2 = livingSpace2.getPosD(getStringBounder());
 			return RealUtils.max(result, x2);
 		}
 		return result;

src/net/sourceforge/plantuml/sequencediagram/teoz/NotesTile.java

@@ -67,7 +67,9 @@ public class NotesTile extends AbstractTile implements Tile {
 		return notes;
 	}
 
-	public NotesTile(LivingSpaces livingSpaces, Notes notes, Rose skin, ISkinParam skinParam) {
+	public NotesTile(StringBounder stringBounder, LivingSpaces livingSpaces, Notes notes, Rose skin,
+			ISkinParam skinParam) {
+		super(stringBounder);
 		this.livingSpaces = livingSpaces;
 		this.notes = notes;
 		this.skin = skin;
@@ -138,39 +140,39 @@ public class NotesTile extends AbstractTile implements Tile {
 		}
 	}
 
-	public double getPreferredHeight(StringBounder stringBounder) {
+	public double getPreferredHeight() {
 		double result = 0;
 		for (Note note : notes) {
-			final Component comp = getComponent(stringBounder, note);
-			final Dimension2D dim = comp.getPreferredDimension(stringBounder);
+			final Component comp = getComponent(getStringBounder(), note);
+			final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
 			result = Math.max(result, dim.getHeight());
 		}
 		return result;
 	}
 
-	public void addConstraints(StringBounder stringBounder) {
+	public void addConstraints() {
 		final List<Note> all = notes.asList();
 		for (int i = 0; i < all.size() - 1; i++) {
 			for (int j = i + 1; j < all.size(); j++) {
-				final double center1 = getXcenter(stringBounder, all.get(i)).getCurrentValue();
-				final double center2 = getXcenter(stringBounder, all.get(j)).getCurrentValue();
+				final double center1 = getXcenter(getStringBounder(), all.get(i)).getCurrentValue();
+				final double center2 = getXcenter(getStringBounder(), all.get(j)).getCurrentValue();
 				if (center2 > center1) {
-					final Real point1b = getX2(stringBounder, all.get(i));
-					final Real point2 = getX(stringBounder, all.get(j));
+					final Real point1b = getX2(getStringBounder(), all.get(i));
+					final Real point2 = getX(getStringBounder(), all.get(j));
 					point2.ensureBiggerThan(point1b);
 				} else {
-					final Real point1 = getX(stringBounder, all.get(i));
-					final Real point2b = getX2(stringBounder, all.get(j));
+					final Real point1 = getX(getStringBounder(), all.get(i));
+					final Real point2b = getX2(getStringBounder(), all.get(j));
 					point1.ensureBiggerThan(point2b);
 				}
 			}
 		}
 	}
 
-	public Real getMinX(StringBounder stringBounder) {
+	public Real getMinX() {
 		final List<Real> reals = new ArrayList<Real>();
 		for (Note note : notes) {
-			reals.add(getX(stringBounder, note));
+			reals.add(getX(getStringBounder(), note));
 		}
 		return RealUtils.min(reals);
 	}
@@ -179,10 +181,10 @@ public class NotesTile extends AbstractTile implements Tile {
 		return getX(stringBounder, note).addFixed(getUsedWidth(stringBounder, note));
 	}
 
-	public Real getMaxX(StringBounder stringBounder) {
+	public Real getMaxX() {
 		final List<Real> reals = new ArrayList<Real>();
 		for (Note note : notes) {
-			reals.add(getX2(stringBounder, note));
+			reals.add(getX2(getStringBounder(), note));
 		}
 		return RealUtils.max(reals);
 	}

src/net/sourceforge/plantuml/sequencediagram/teoz/PlayingSpace.java

@@ -79,8 +79,8 @@ public class PlayingSpace implements Bordered {
 		tiles.addAll(TileBuilder.buildSeveral(diagram.events().iterator(), tileArguments, null));
 
 		for (Tile tile : tiles) {
-			min2.add(tile.getMinX(tileArguments.getStringBounder()));
-			max2.add(tile.getMaxX(tileArguments.getStringBounder()));
+			min2.add(tile.getMinX());
+			max2.add(tile.getMaxX());
 		}
 
 		for (LivingSpace livingSpace : livingSpaces.values()) {
@@ -95,10 +95,6 @@ public class PlayingSpace implements Bordered {
 	}
 
 	public void drawBackground(UGraphic ug) {
-		final StringBounder stringBounder = ug.getStringBounder();
-		final LiveBoxFinder liveBoxFinder = new LiveBoxFinder(stringBounder);
-
-		drawUInternal(liveBoxFinder, false);
 		final UGraphicInterceptorTile interceptor = new UGraphicInterceptorTile(ug, true);
 		drawUInternal(interceptor, false);
 	}
@@ -146,9 +142,9 @@ public class PlayingSpace implements Bordered {
 		return result;
 	}
 
-	public void addConstraints(StringBounder stringBounder) {
+	public void addConstraints() {
 		for (Tile tile : tiles) {
-			tile.addConstraints(stringBounder);
+			tile.addConstraints();
 		}
 	}
 

src/net/sourceforge/plantuml/sequencediagram/teoz/PlayingSpaceWithParticipants.java

@@ -72,8 +72,8 @@ public class PlayingSpaceWithParticipants extends AbstractTextBlock implements T
 					- playingSpace.getMinX(stringBounder).getCurrentValue();
 
 			final int factor = playingSpace.isShowFootbox() ? 2 : 1;
-			final double height = playingSpace.getPreferredHeight(stringBounder) + factor
-					* playingSpace.getLivingSpaces().getHeadHeight(stringBounder);
+			final double height = playingSpace.getPreferredHeight(stringBounder)
+					+ factor * playingSpace.getLivingSpaces().getHeadHeight(stringBounder);
 
 			cacheDimension = new Dimension2DDouble(width, height);
 		}
@@ -106,7 +106,8 @@ public class PlayingSpaceWithParticipants extends AbstractTextBlock implements T
 			playingSpace.drawForeground(ug.apply(UTranslate.dy(headHeight)));
 		} else {
 			final UClip clip = new UClip(-1000, ymin, Double.MAX_VALUE, ymax - ymin + 1);
-			// playingSpace.drawForeground(new UGraphicNewpages(ug.apply(UTranslate.dy(headHeight)), ymin, ymax));
+			// playingSpace.drawForeground(new
+			// UGraphicNewpages(ug.apply(UTranslate.dy(headHeight)), ymin, ymax));
 			playingSpace.drawForeground(ug.apply(UTranslate.dy(headHeight)).apply(clip));
 		}
 		// drawNewPages(ug.apply(UTranslate.dy(headHeight)));

src/net/sourceforge/plantuml/sequencediagram/teoz/ReferenceTile.java

@@ -62,6 +62,7 @@ public class ReferenceTile extends AbstractTile implements Tile {
 	}
 
 	public ReferenceTile(Reference reference, TileArguments tileArguments) {
+		super(tileArguments.getStringBounder());
 		this.reference = reference;
 		this.tileArguments = tileArguments;
 	}
@@ -94,8 +95,8 @@ public class ReferenceTile extends AbstractTile implements Tile {
 		strings = strings.add("ref");
 		strings = strings.addAll(reference.getStrings());
 
-		final Component comp = tileArguments.getSkin().createComponent(null, ComponentType.REFERENCE,
-				null, tileArguments.getSkinParam(), strings);
+		final Component comp = tileArguments.getSkin().createComponent(null, ComponentType.REFERENCE, null,
+				tileArguments.getSkinParam(), strings);
 		return comp;
 	}
 
@@ -110,22 +111,22 @@ public class ReferenceTile extends AbstractTile implements Tile {
 		comp.drawU(ug, area, (Context2D) ug);
 	}
 
-	public double getPreferredHeight(StringBounder stringBounder) {
-		final Component comp = getComponent(stringBounder);
-		final Dimension2D dim = comp.getPreferredDimension(stringBounder);
+	public double getPreferredHeight() {
+		final Component comp = getComponent(getStringBounder());
+		final Dimension2D dim = comp.getPreferredDimension(getStringBounder());
 		return dim.getHeight();
 	}
 
-	public void addConstraints(StringBounder stringBounder) {
+	public void addConstraints() {
 	}
 
-	public Real getMinX(StringBounder stringBounder) {
-		init(stringBounder);
+	public Real getMinX() {
+		init(getStringBounder());
 		return this.first;
 	}
 
-	public Real getMaxX(StringBounder stringBounder) {
-		init(stringBounder);
+	public Real getMaxX() {
+		init(getStringBounder());
 		return this.last;
 	}
 

src/net/sourceforge/plantuml/sequencediagram/teoz/SequenceDiagramFileMakerTeoz.java

@@ -227,7 +227,7 @@ public class SequenceDiagramFileMakerTeoz implements FileMaker {
 		this.englobers = new Englobers(tileArguments);
 		final PlayingSpace mainTile = new PlayingSpace(diagram, englobers, tileArguments);
 		this.livingSpaces.addConstraints(stringBounder);
-		mainTile.addConstraints(stringBounder);
+		mainTile.addConstraints();
 		this.englobers.addConstraints(stringBounder);
 		origin.compileNow();
 		tileArguments.setBordered(mainTile);

src/net/sourceforge/plantuml/sequencediagram/teoz/Stairs2.java

@@ -58,7 +58,8 @@ public class Stairs2 {
 		if (value < 0) {
 			throw new IllegalArgumentException();
 		}
-		// System.err.println("Stairs2::addStep " + position + " " + value + " color=" + color);
+		// System.err.println("Stairs2::addStep " + position + " " + value + " color=" +
+		// color);
 		assert ys.size() == values.size();
 		if (ys.size() > 0) {
 			final double lastY = ys.get(ys.size() - 1).getValue();

src/net/sourceforge/plantuml/sequencediagram/teoz/Tile.java

@@ -35,29 +35,27 @@
  */
 package net.sourceforge.plantuml.sequencediagram.teoz;
 
-import net.sourceforge.plantuml.graphic.StringBounder;
-import net.sourceforge.plantuml.graphic.UDrawable;
 import net.sourceforge.plantuml.real.Real;
 import net.sourceforge.plantuml.sequencediagram.Event;
-import net.sourceforge.plantuml.ugraphic.UShape;
 
-public interface Tile extends UDrawable, UShape {
+public interface Tile extends Tile2 {
 
-	public double getPreferredHeight(StringBounder stringBounder);
+	public double getPreferredHeight();
 
-	public void addConstraints(StringBounder stringBounder);
+	public void callbackY(double y);
 
-	public Real getMinX(StringBounder stringBounder);
+	public void addConstraints();
 
-	public Real getMaxX(StringBounder stringBounder);
+	public Real getMinX();
+
+	public Real getMaxX();
 
 	public Event getEvent();
 
-	public double getYPoint(StringBounder stringBounder);
+	public double getContactPointRelative();
+
+	public double getZZZ();
 
-	public double getZ(StringBounder stringBounder);
-	
 	public boolean matchAnchorV1(String anchor);
 
-
 }

src/net/sourceforge/plantuml/sequencediagram/teoz/Tile2.java

@@ -35,8 +35,8 @@
  */
 package net.sourceforge.plantuml.sequencediagram.teoz;
 
+import net.sourceforge.plantuml.graphic.UDrawable;
 
-public interface TileWithCallbackY extends Tile {
+public interface Tile2 extends UDrawable {
 
-	public void callbackY(double y);
 }

src/net/sourceforge/plantuml/sequencediagram/teoz/TileArguments.java

@@ -62,8 +62,8 @@ public class TileArguments implements Bordered {
 	}
 
 	public TileArguments withBackColorGeneral(HColor backColorElement, HColor backColorGeneral) {
-		return new TileArguments(stringBounder, livingSpaces, skin, new SkinParamBackcolored(skinParam,
-				backColorElement, backColorGeneral), origin);
+		return new TileArguments(stringBounder, livingSpaces, skin,
+				new SkinParamBackcolored(skinParam, backColorElement, backColorGeneral), origin);
 	}
 
 	public TileArguments withBackColor(Reference reference) {

src/net/sourceforge/plantuml/sequencediagram/teoz/TileBuilder.java

@@ -68,7 +68,7 @@ public class TileBuilder {
 			final Event ev = it.next();
 			for (Tile tile : TileBuilder.buildOne(it, tileArguments, ev, parent)) {
 				tiles.add(tile);
-				final Real tmpMax = tile.getMaxX(tileArguments.getStringBounder());
+				final Real tmpMax = tile.getMaxX();
 			}
 		}
 		return Collections.unmodifiableList(tiles);
@@ -90,29 +90,27 @@ public class TileBuilder {
 			boolean reverse = false;
 			Tile result = null;
 			if (msg.isSelfMessage()) {
-				result = new CommunicationTileSelf(livingSpace1, msg, skin, skinParam, livingSpaces);
+				result = new CommunicationTileSelf(tileArguments.getStringBounder(), livingSpace1, msg, skin, skinParam,
+						livingSpaces);
 			} else {
-				// System.err.println("msg=" + msg);
-				result = new CommunicationTile(livingSpace1, livingSpace2, msg, skin, skinParam);
+				result = new CommunicationTile(tileArguments.getStringBounder(), livingSpaces, msg, skin, skinParam);
 				reverse = ((CommunicationTile) result).isReverse(stringBounder);
 			}
 			for (Note noteOnMessage : msg.getNoteOnMessages()) {
 				final NotePosition notePosition = noteOnMessage.getPosition();
 				if (notePosition == NotePosition.LEFT) {
-					result = new CommunicationTileNoteLeft((TileWithUpdateStairs) result, msg, skin, skinParam,
+					result = new CommunicationTileNoteLeft(result, msg, skin, skinParam,
 							reverse ? livingSpace2 : livingSpace1, noteOnMessage);
 				} else if (notePosition == NotePosition.RIGHT && msg.isSelfMessage()) {
 					result = new CommunicationTileSelfNoteRight((CommunicationTileSelf) result, msg, skin, skinParam,
 							noteOnMessage);
 				} else if (notePosition == NotePosition.RIGHT) {
-					result = new CommunicationTileNoteRight((TileWithUpdateStairs) result, msg, skin, skinParam,
+					result = new CommunicationTileNoteRight(result, msg, skin, skinParam,
 							reverse ? livingSpace1 : livingSpace2, noteOnMessage);
 				} else if (notePosition == NotePosition.BOTTOM) {
-					result = new CommunicationTileNoteBottom((TileWithUpdateStairs) result, msg, skin, skinParam,
-							noteOnMessage);
+					result = new CommunicationTileNoteBottom(result, msg, skin, skinParam, noteOnMessage);
 				} else if (notePosition == NotePosition.TOP) {
-					result = new CommunicationTileNoteTop((TileWithUpdateStairs) result, msg, skin, skinParam,
-							noteOnMessage);
+					result = new CommunicationTileNoteTop(result, msg, skin, skinParam, noteOnMessage);
 				}
 			}
 			tiles.add(result);
@@ -124,11 +122,9 @@ public class TileBuilder {
 			for (Note noteOnMessage : exo.getNoteOnMessages()) {
 				final NotePosition notePosition = exo.getNoteOnMessages().get(0).getPosition();
 				if (notePosition == NotePosition.LEFT) {
-					result = new CommunicationTileNoteLeft((TileWithUpdateStairs) result, exo, skin, skinParam,
-							livingSpace1, noteOnMessage);
+					result = new CommunicationTileNoteLeft(result, exo, skin, skinParam, livingSpace1, noteOnMessage);
 				} else if (notePosition == NotePosition.RIGHT) {
-					result = new CommunicationTileNoteRight((TileWithUpdateStairs) result, exo, skin, skinParam,
-							livingSpace1, noteOnMessage);
+					result = new CommunicationTileNoteRight(result, exo, skin, skinParam, livingSpace1, noteOnMessage);
 				}
 			}
 			tiles.add(result);
@@ -140,17 +136,19 @@ public class TileBuilder {
 				livingSpace1 = tileArguments.getFirstLivingSpace();
 				livingSpace2 = tileArguments.getLastLivingSpace();
 			}
-			tiles.add(new NoteTile(livingSpace1, livingSpace2, note, skin, skinParam));
+			tiles.add(
+					new NoteTile(tileArguments.getStringBounder(), livingSpace1, livingSpace2, note, skin, skinParam));
 		} else if (ev instanceof Notes) {
 			final Notes notes = (Notes) ev;
-			tiles.add(new NotesTile(livingSpaces, notes, skin, skinParam));
+			tiles.add(new NotesTile(tileArguments.getStringBounder(), livingSpaces, notes, skin, skinParam));
 		} else if (ev instanceof Divider) {
 			final Divider divider = (Divider) ev;
 			tiles.add(new DividerTile(divider, tileArguments));
 		} else if (ev instanceof GroupingStart) {
 			final GroupingStart start = (GroupingStart) ev;
-			final GroupingTile groupingTile = new GroupingTile(it, start, tileArguments.withBackColorGeneral(
-					start.getBackColorElement(), start.getBackColorGeneral()), tileArguments);
+			final GroupingTile groupingTile = new GroupingTile(it, start,
+					tileArguments.withBackColorGeneral(start.getBackColorElement(), start.getBackColorGeneral()),
+					tileArguments);
 			tiles.add(new EmptyTile(4, groupingTile));
 			tiles.add(groupingTile);
 			tiles.add(new EmptyTile(4, groupingTile));

src/net/sourceforge/plantuml/sequencediagram/teoz/TileMarged.java

@@ -35,7 +35,6 @@
  */
 package net.sourceforge.plantuml.sequencediagram.teoz;
 
-import net.sourceforge.plantuml.graphic.StringBounder;
 import net.sourceforge.plantuml.real.Real;
 import net.sourceforge.plantuml.sequencediagram.Event;
 import net.sourceforge.plantuml.ugraphic.UGraphic;
@@ -50,6 +49,7 @@ public class TileMarged extends AbstractTile implements Tile {
 	private final double y2;
 
 	public TileMarged(Tile tile, double x1, double x2, double y1, double y2) {
+		super(((AbstractTile) tile).getStringBounder());
 		this.tile = tile;
 		this.x1 = x1;
 		this.x2 = x2;
@@ -62,20 +62,20 @@ public class TileMarged extends AbstractTile implements Tile {
 
 	}
 
-	public double getPreferredHeight(StringBounder stringBounder) {
-		return tile.getPreferredHeight(stringBounder) + y1 + y2;
+	public double getPreferredHeight() {
+		return tile.getPreferredHeight() + y1 + y2;
 	}
 
-	public void addConstraints(StringBounder stringBounder) {
-		tile.addConstraints(stringBounder);
+	public void addConstraints() {
+		tile.addConstraints();
 	}
 
-	public Real getMinX(StringBounder stringBounder) {
-		return tile.getMinX(stringBounder);
+	public Real getMinX() {
+		return tile.getMinX();
 	}
 
-	public Real getMaxX(StringBounder stringBounder) {
-		return tile.getMaxX(stringBounder).addFixed(x1 + x2);
+	public Real getMaxX() {
+		return tile.getMaxX().addFixed(x1 + x2);
 	}
 
 	public Event getEvent() {

src/net/sourceforge/plantuml/sequencediagram/teoz/TileParallel.java

@@ -47,23 +47,18 @@ import net.sourceforge.plantuml.sequencediagram.Event;
 import net.sourceforge.plantuml.ugraphic.UGraphic;
 import net.sourceforge.plantuml.ugraphic.UTranslate;
 
-public class TileParallel implements Tile, TileWithUpdateStairs, TileWithCallbackY {
+public class TileParallel extends CommonTile {
+
+	public TileParallel(StringBounder stringBounder) {
+		super(stringBounder);
+	}
 
 	private final List<Tile> tiles = new ArrayList<Tile>();
 
-	public void callbackY(double y) {
+	@Override
+	public void callbackY_internal(double y) {
 		for (Tile tile : tiles) {
-			if (tile instanceof TileWithCallbackY) {
-				((TileWithCallbackY) tile).callbackY(y);
-			}
-		}
-	}
-
-	public void updateStairs(StringBounder stringBounder, double y) {
-		for (Tile tile : tiles) {
-			if (tile instanceof TileWithUpdateStairs) {
-				((TileWithUpdateStairs) tile).updateStairs(stringBounder, y);
-			}
+			tile.callbackY(y);
 		}
 	}
 
@@ -72,44 +67,40 @@ public class TileParallel implements Tile, TileWithUpdateStairs, TileWithCallbac
 	}
 
 	public void drawU(UGraphic ug) {
-		final StringBounder stringBounder = ug.getStringBounder();
-		// final double totalHeight = getPreferredHeight(stringBounder);
-		final double yPointAll = getYPoint(stringBounder);
+		final double yPointAll = getContactPointRelative();
 		for (Tile tile : tiles) {
-			final double yPoint = tile.getYPoint(stringBounder);
-			// tile.drawU(ug.apply(UTranslate.dy(totalHeight -
-			// tile.getPreferredHeight(stringBounder))));
+			final double yPoint = tile.getContactPointRelative();
 			tile.drawU(ug.apply(UTranslate.dy(yPointAll - yPoint)));
 		}
 	}
 
-	public double getYPoint(StringBounder stringBounder) {
+	public double getContactPointRelative() {
 		double result = 0;
 		for (Tile tile : tiles) {
-			result = Math.max(result, tile.getYPoint(stringBounder));
+			result = Math.max(result, tile.getContactPointRelative());
 		}
 		return result;
 	}
 
-	public double getZ(StringBounder stringBounder) {
+	public double getZZZ() {
 		double result = 0;
 		for (Tile tile : tiles) {
-			result = Math.max(result, tile.getZ(stringBounder));
+			result = Math.max(result, tile.getZZZ());
 		}
 		return result;
 	}
 
-	public double getPreferredHeight(StringBounder stringBounder) {
-		return getYPoint(stringBounder) + getZ(stringBounder);
+	public double getPreferredHeight() {
+		return getContactPointRelative() + getZZZ();
 	}
 
-	public void addConstraints(StringBounder stringBounder) {
+	public void addConstraints() {
 		for (Tile tile : tiles) {
-			tile.addConstraints(stringBounder);
+			tile.addConstraints();
 		}
 	}
 
-	public Real getMinX(final StringBounder stringBounder) {
+	public Real getMinX() {
 		return RealUtils.min(new AbstractCollection<Real>() {
 			public Iterator<Real> iterator() {
 				return new Iterator<Real>() {
@@ -120,7 +111,7 @@ public class TileParallel implements Tile, TileWithUpdateStairs, TileWithCallbac
 					}
 
 					public Real next() {
-						return source.next().getMinX(stringBounder);
+						return source.next().getMinX();
 					}
 
 					public void remove() {
@@ -135,7 +126,7 @@ public class TileParallel implements Tile, TileWithUpdateStairs, TileWithCallbac
 		});
 	}
 
-	public Real getMaxX(final StringBounder stringBounder) {
+	public Real getMaxX() {
 		return RealUtils.max(new AbstractCollection<Real>() {
 			public Iterator<Real> iterator() {
 				return new Iterator<Real>() {
@@ -146,7 +137,7 @@ public class TileParallel implements Tile, TileWithUpdateStairs, TileWithCallbac
 					}
 
 					public Real next() {
-						return source.next().getMaxX(stringBounder);
+						return source.next().getMaxX();
 					}
 
 					public void remove() {

src/net/sourceforge/plantuml/sequencediagram/teoz/UGraphicInterceptorTile.java

@@ -42,7 +42,7 @@ import net.sourceforge.plantuml.ugraphic.UGraphic;
 import net.sourceforge.plantuml.ugraphic.UShape;
 
 public class UGraphicInterceptorTile extends UGraphicDelegator implements Context2D {
-	
+
 	private final boolean isBackground;
 
 	public UGraphicInterceptorTile(UGraphic ug, boolean isBackground) {

src/net/sourceforge/plantuml/sequencediagram/teoz/YPositionedTile.java

@@ -35,7 +35,6 @@
  */
 package net.sourceforge.plantuml.sequencediagram.teoz;
 
-import net.sourceforge.plantuml.graphic.StringBounder;
 import net.sourceforge.plantuml.ugraphic.UGraphic;
 import net.sourceforge.plantuml.ugraphic.UTranslate;
 
@@ -44,16 +43,10 @@ public class YPositionedTile {
 	private final Tile tile;
 	private final double y;
 
-	public boolean inArea(double ymin, double ymax) {
-		return y >= ymin && y < ymax;
-	}
-
 	public YPositionedTile(Tile tile, double y) {
 		this.tile = tile;
 		this.y = y;
-		if (tile instanceof TileWithCallbackY) {
-			((TileWithCallbackY) tile).callbackY(y);
-		}
+		tile.callbackY(y);
 	}
 
 	@Override
@@ -63,7 +56,7 @@ public class YPositionedTile {
 
 	public void drawInArea(UGraphic ug) {
 		// System.err.println("YPositionedTile::drawU y=" + y + " " + tile);
-		ug.apply(UTranslate.dy(y)).draw(tile);
+		tile.drawU(ug.apply(UTranslate.dy(y)));
 	}
 
 	public boolean matchAnchorV2(String anchor) {
@@ -71,14 +64,13 @@ public class YPositionedTile {
 		return result;
 	}
 
-	public final double getY(StringBounder stringBounder) {
-		final TileWithUpdateStairs communicationTile = (TileWithUpdateStairs) tile;
-		return y + communicationTile.getYPoint(stringBounder);
+	public final double getY() {
+		return y + tile.getContactPointRelative();
 	}
 
-	public double getMiddleX(StringBounder stringBounder) {
-		final double max = tile.getMaxX(stringBounder).getCurrentValue();
-		final double min = tile.getMinX(stringBounder).getCurrentValue();
+	public double getMiddleX() {
+		final double max = tile.getMaxX().getCurrentValue();
+		final double min = tile.getMinX().getCurrentValue();
 		return (min + max) / 2;
 	}
 

src/net/sourceforge/plantuml/skin/ArrowComponent.java

@@ -49,6 +49,8 @@ public interface ArrowComponent extends Component {
 	double getPaddingY();
 	
 	public double getYPoint(StringBounder stringBounder);
+	
+	public double getPosArrow(StringBounder stringBounder);
 
 
 }

src/net/sourceforge/plantuml/skin/rose/ComponentRoseArrow.java

@@ -103,14 +103,17 @@ public class ComponentRoseArrow extends AbstractComponentRoseArrow {
 		final double pos1 = start + 1;
 		final double pos2 = len - 1;
 
-		if (getArrowConfiguration().getDecoration2() == ArrowDecoration.CIRCLE && dressing2.getHead() == ArrowHead.NONE) {
+		if (getArrowConfiguration().getDecoration2() == ArrowDecoration.CIRCLE
+				&& dressing2.getHead() == ArrowHead.NONE) {
 			len -= diamCircle / 2;
 		}
-		if (getArrowConfiguration().getDecoration2() == ArrowDecoration.CIRCLE && dressing2.getHead() != ArrowHead.NONE) {
+		if (getArrowConfiguration().getDecoration2() == ArrowDecoration.CIRCLE
+				&& dressing2.getHead() != ArrowHead.NONE) {
 			len -= diamCircle / 2 + thinCircle;
 		}
 
-		if (getArrowConfiguration().getDecoration1() == ArrowDecoration.CIRCLE && dressing1.getHead() == ArrowHead.NONE) {
+		if (getArrowConfiguration().getDecoration1() == ArrowDecoration.CIRCLE
+				&& dressing1.getHead() == ArrowHead.NONE) {
 			start += diamCircle / 2;
 			len -= diamCircle / 2;
 		}
@@ -161,12 +164,20 @@ public class ComponentRoseArrow extends AbstractComponentRoseArrow {
 					- (direction2 == ArrowDirection.LEFT_TO_RIGHT_NORMAL ? getArrowDeltaX() : 0);
 		} else {
 			textPos = getMarginX1()
-					+ (direction2 == ArrowDirection.RIGHT_TO_LEFT_REVERSE
-							|| direction2 == ArrowDirection.BOTH_DIRECTION ? getArrowDeltaX() : 0);
+					+ (direction2 == ArrowDirection.RIGHT_TO_LEFT_REVERSE || direction2 == ArrowDirection.BOTH_DIRECTION
+							? getArrowDeltaX()
+							: 0);
 		}
 		getTextBlock().drawU(ug.apply(new UTranslate(textPos, yText)));
 	}
 
+	public double getPosArrow(StringBounder stringBounder) {
+		if (isBelowForResponse()) {
+			return 0;
+		}
+		return getTextHeight(stringBounder) - 2 * getMarginY();
+	}
+
 	private boolean isBelowForResponse() {
 		return belowForResponse && getDirection2() == ArrowDirection.RIGHT_TO_LEFT_REVERSE;
 	}
@@ -192,10 +203,10 @@ public class ComponentRoseArrow extends AbstractComponentRoseArrow {
 			}
 		} else if (dressing.getHead() == ArrowHead.CROSSX) {
 			ug = ug.apply(new UStroke(2));
-			ug.apply(new UTranslate(spaceCrossX, -getArrowDeltaX() / 2)).draw(
-					new ULine(getArrowDeltaX(), getArrowDeltaX()));
-			ug.apply(new UTranslate(spaceCrossX, getArrowDeltaX() / 2)).draw(
-					new ULine(getArrowDeltaX(), -getArrowDeltaX()));
+			ug.apply(new UTranslate(spaceCrossX, -getArrowDeltaX() / 2))
+					.draw(new ULine(getArrowDeltaX(), getArrowDeltaX()));
+			ug.apply(new UTranslate(spaceCrossX, getArrowDeltaX() / 2))
+					.draw(new ULine(getArrowDeltaX(), -getArrowDeltaX()));
 		} else if (dressing.getHead() == ArrowHead.NORMAL) {
 			final UPolygon polygon = getPolygonReverse(dressing.getPart());
 			ug.apply(getForegroundColor().bg()).apply(UTranslate.dx(x)).draw(polygon);
@@ -224,10 +235,10 @@ public class ComponentRoseArrow extends AbstractComponentRoseArrow {
 			}
 		} else if (dressing.getHead() == ArrowHead.CROSSX) {
 			ug = ug.apply(new UStroke(2));
-			ug.apply(new UTranslate(x - spaceCrossX - getArrowDeltaX(), -getArrowDeltaX() / 2)).draw(
-					new ULine(getArrowDeltaX(), getArrowDeltaX()));
-			ug.apply(new UTranslate(x - spaceCrossX - getArrowDeltaX(), getArrowDeltaX() / 2)).draw(
-					new ULine(getArrowDeltaX(), -getArrowDeltaX()));
+			ug.apply(new UTranslate(x - spaceCrossX - getArrowDeltaX(), -getArrowDeltaX() / 2))
+					.draw(new ULine(getArrowDeltaX(), getArrowDeltaX()));
+			ug.apply(new UTranslate(x - spaceCrossX - getArrowDeltaX(), getArrowDeltaX() / 2))
+					.draw(new ULine(getArrowDeltaX(), -getArrowDeltaX()));
 			ug = ug.apply(new UStroke());
 		} else if (dressing.getHead() == ArrowHead.NORMAL) {
 			final UPolygon polygon = getPolygonNormal(dressing.getPart(), x);

src/net/sourceforge/plantuml/skin/rose/ComponentRoseSelfArrow.java

@@ -194,5 +194,10 @@ public class ComponentRoseSelfArrow extends AbstractComponentRoseArrow {
 	public double getPreferredWidth(StringBounder stringBounder) {
 		return Math.max(getTextWidth(stringBounder), arrowWidth);
 	}
+	
+	public double getPosArrow(StringBounder stringBounder) {
+		throw new UnsupportedOperationException();
+	}
+
 
 }

src/net/sourceforge/plantuml/statediagram/command/CommandAddField.java

@@ -47,6 +47,7 @@ import net.sourceforge.plantuml.cucadiagram.Code;
 import net.sourceforge.plantuml.cucadiagram.IEntity;
 import net.sourceforge.plantuml.cucadiagram.Ident;
 import net.sourceforge.plantuml.statediagram.StateDiagram;
+import net.sourceforge.plantuml.ugraphic.color.NoSuchColorException;
 
 public class CommandAddField extends SingleLineCommand2<StateDiagram> {
 
@@ -66,7 +67,7 @@ public class CommandAddField extends SingleLineCommand2<StateDiagram> {
 	}
 
 	@Override
-	protected CommandExecutionResult executeArg(StateDiagram diagram, LineLocation location, RegexResult arg) {
+	protected CommandExecutionResult executeArg(StateDiagram diagram, LineLocation location, RegexResult arg) throws NoSuchColorException {
 		final String codeString = arg.getLazzy("CODE", 0);
 		final String field = arg.get("FIELD", 0);
 

src/net/sourceforge/plantuml/style/SName.java

@@ -105,7 +105,8 @@ public enum SName {
 	task, //
 	title, //
 	usecase, //
-	wbsDiagram; //
+	wbsDiagram, //
+	yamlDiagram; //
 
 	public static String depth(int level) {
 		return "depth(" + level + ")";

src/net/sourceforge/plantuml/style/StyleSignature.java

@@ -90,6 +90,10 @@ public class StyleSignature {
 		return new StyleSignature(result);
 	}
 
+	public StyleSignature add(SName name) {
+		return add(name.name().toLowerCase().replace("_", ""));
+	}
+
 	public StyleSignature addStar() {
 		final Set<String> result = new HashSet<String>(names);
 		result.add("*");

src/net/sourceforge/plantuml/svek/extremity/MiddleCircleCircled.java

@@ -42,7 +42,7 @@ import net.sourceforge.plantuml.ugraphic.UGraphic;
 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;
+import net.sourceforge.plantuml.ugraphic.color.HColorNone;
 
 class MiddleCircleCircled extends Extremity {
 
@@ -80,11 +80,11 @@ class MiddleCircleCircled extends Extremity {
 		final double d = 0;
 		if (mode == MiddleCircleCircledMode.MODE1 || mode == MiddleCircleCircledMode.BOTH) {
 			final UEllipse arc1 = new UEllipse(2 * radius2, 2 * radius2, angle, 90);
-			ug.apply(new UTranslate(-radius2 + d, -radius2 + d)).draw(arc1);
+			ug.apply(new HColorNone().bg()).apply(new UTranslate(-radius2 + d, -radius2 + d)).draw(arc1);
 		}
 		if (mode == MiddleCircleCircledMode.MODE2 || mode == MiddleCircleCircledMode.BOTH) {
 			final UEllipse arc2 = new UEllipse(2 * radius2, 2 * radius2, angle + 180, 90);
-			ug.apply(new UTranslate(-radius2 + d, -radius2 + d)).draw(arc2);
+			ug.apply(new HColorNone().bg()).apply(new UTranslate(-radius2 + d, -radius2 + d)).draw(arc2);
 		}
 		ug.apply(new UTranslate(-radius1, -radius1)).draw(circle);
 	}

src/net/sourceforge/plantuml/svek/image/EntityImageDescription.java

@@ -200,8 +200,8 @@ public class EntityImageDescription extends AbstractEntityImage {
 					HorizontalAlignment.CENTER, getSkinParam());
 		}
 
-		name = BodyFactory.create2(codeDisplay, symbol.getFontParam(), getSkinParam(), HorizontalAlignment.CENTER,
-				stereotype, entity, style);
+		name = BodyFactory.create2(skinParam.getDefaultTextAlignment(HorizontalAlignment.CENTER), codeDisplay,
+				symbol.getFontParam(), getSkinParam(), stereotype, entity, style);
 
 		if (hideText) {
 			asSmall = symbol.asSmall(TextBlockUtils.empty(0, 0), TextBlockUtils.empty(0, 0), TextBlockUtils.empty(0, 0),

src/net/sourceforge/plantuml/svek/image/EntityImageLollipopInterfaceEye2.java

@@ -85,8 +85,9 @@ public class EntityImageLollipopInterfaceEye2 extends AbstractEntityImage {
 			throw new IllegalArgumentException();
 		}
 
-		this.desc = BodyFactory.create2(entity.getDisplay(), symbol.getFontParam(), skinParam,
-				HorizontalAlignment.CENTER, stereotype, entity, getStyle(symbol.getFontParam()));
+		this.desc = BodyFactory.create2(skinParam.getDefaultTextAlignment(HorizontalAlignment.CENTER),
+				entity.getDisplay(), symbol.getFontParam(), skinParam, stereotype, entity,
+				getStyle(symbol.getFontParam()));
 
 		this.url = entity.getUrl99();
 

src/net/sourceforge/plantuml/svek/image/EntityImageState2.java

@@ -94,8 +94,9 @@ public class EntityImageState2 extends AbstractEntityImage {
 		this.url = entity.getUrl99();
 		TextBlock stereo = TextBlockUtils.empty(0, 0);
 
-		final TextBlock desc = BodyFactory.create2(entity.getDisplay(), symbol.getFontParam(), skinParam,
-				HorizontalAlignment.CENTER, stereotype, entity, getStyle(symbol.getFontParam()));
+		final TextBlock desc = BodyFactory.create2(skinParam.getDefaultTextAlignment(HorizontalAlignment.CENTER),
+				entity.getDisplay(), symbol.getFontParam(), skinParam, stereotype, entity,
+				getStyle(symbol.getFontParam()));
 
 		asSmall = symbol.asSmall(null, desc, stereo, ctx, skinParam.getStereotypeAlignment());
 

src/net/sourceforge/plantuml/svek/image/EntityImageUseCase.java

@@ -5,12 +5,12 @@
  * (C) Copyright 2009-2020, 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
@@ -30,7 +30,7 @@
  *
  *
  * Original Author:  Arnaud Roques
- *
+ * 
  *
  */
 package net.sourceforge.plantuml.svek.image;
@@ -87,8 +87,15 @@ public class EntityImageUseCase extends AbstractEntityImage {
 		super(entity, skinParam);
 		final Stereotype stereotype = entity.getStereotype();
 
-		final TextBlock tmp = BodyFactory.create2(entity.getDisplay(), FontParam.USECASE, skinParam,
-				HorizontalAlignment.CENTER, stereotype, entity, getStyle());
+		final HorizontalAlignment align;
+		if (UseStyle.useBetaStyle()) {
+			final Style style = getStyle();
+			align = style.getHorizontalAlignment();
+		} else {
+			align = HorizontalAlignment.CENTER;
+		}
+		final TextBlock tmp = BodyFactory.create2(skinParam.getDefaultTextAlignment(align), entity.getDisplay(),
+				FontParam.USECASE, skinParam, stereotype, entity, getStyle());
 
 		if (stereotype == null || stereotype.getLabel(Guillemet.DOUBLE_COMPARATOR) == null
 				|| portionShower.showPortion(EntityPortion.STEREOTYPE, entity) == false) {

src/net/sourceforge/plantuml/svg/SvgGraphics.java

@@ -5,12 +5,12 @@
  * (C) Copyright 2009-2020, 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
@@ -30,7 +30,7 @@
  *
  *
  * Original Author:  Arnaud Roques
- *
+ * 
  *
  */
 package net.sourceforge.plantuml.svg;
@@ -40,6 +40,7 @@ import java.awt.geom.PathIterator;
 import java.awt.image.BufferedImage;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
+import java.io.InputStream;
 import java.io.OutputStream;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -64,6 +65,7 @@ import org.w3c.dom.Comment;
 import org.w3c.dom.Document;
 import org.w3c.dom.Element;
 
+import net.sourceforge.plantuml.FileUtils;
 import net.sourceforge.plantuml.Log;
 import net.sourceforge.plantuml.SignatureUtils;
 import net.sourceforge.plantuml.code.Base64Coder;
@@ -159,9 +161,15 @@ public class SvgGraphics {
 				defs.appendChild(getPathHover(hover));
 			}
 
-			// Add styles and script for interactive SVG
-			defs.appendChild(getStylesForInteractiveMode());
-			defs.appendChild(getScriptForInteractiveMode());
+			final Element styles = getStylesForInteractiveMode();
+			if (styles != null) {
+				defs.appendChild(styles);
+			}
+
+			final Element script = getScriptForInteractiveMode();
+			if (script != null) {
+				defs.appendChild(script);
+			}
 		} catch (ParserConfigurationException e) {
 			e.printStackTrace();
 			throw new IllegalStateException(e);
@@ -170,11 +178,11 @@ public class SvgGraphics {
 
 	private Element getStylesForInteractiveMode() {
 		final Element style = simpleElement("style");
-		final CDATASection cdata = document.createCDATASection(
-			".elem {cursor: pointer;} " + "\n" +
-			".elem, .link {opacity: 0.3;}" + "\n" +
-			".elem.selected, .link.selected {opacity: 1;}"
-		);
+		final String text = getData("default.css");
+		if (text == null) {
+			return null;
+		}
+		final CDATASection cdata = document.createCDATASection(text);
 		style.setAttribute("type", "text/css");
 		style.appendChild(cdata);
 		return style;
@@ -182,121 +190,24 @@ public class SvgGraphics {
 
 	private Element getScriptForInteractiveMode() {
 		final Element script = document.createElement("script");
-		script.setTextContent(
-			"function addItemToMapOfLists(mapOfLists, name, item) {" + "\n" +
-      "  // mapOfLists = {" + "\n" +
-      "  //   'key1': [item1, item2, ...]," + "\n" +
-      "  //   'key2': [item3, item4, ...]," + "\n" +
-      "  // }" + "\n" +
-      "  if (mapOfLists[name].length > 0) {" + "\n" +
-      "    if (!mapOfLists[name].includes(item)) {" + "\n" +
-      "      mapOfLists[name].push(item);" + "\n" +
-      "    }" + "\n" +
-      "  } else {" + "\n" +
-      "    mapOfLists[name] = [item];" + "\n" +
-      "  }" + "\n" +
-      "}" + "\n" +
-			"" + "\n" +
-      "function main() {" + "\n" +
-      "  let elems = Array.from(document.getElementsByClassName('elem'));" + "\n" +
-      "  let links = Array.from(document.getElementsByClassName('link'));" + "\n" +
-			"" + "\n" +
-      "  let elemsMap = {};" + "\n" +
-      "  let linkedElems = {};" + "\n" +
-      "  let linkedLinks = {};" + "\n" +
-			"" + "\n" +
-      "  elems.forEach(elem => {" + "\n" +
-      "    let name = elem.classList[1];" + "\n" +
-      "    elemsMap[name] = elem;" + "\n" +
-      "    linkedElems[name] = [];" + "\n" +
-      "    linkedLinks[name] = [];" + "\n" +
-      "  });" + "\n" +
-			"" + "\n" +
-      "  links.forEach(link => {" + "\n" +
-      "    if (elemsMap[name1]) {" + "\n" +
-      "      if (elemsMap[name2]) {" + "\n" +
-      "        let name1 = link.classList[1];" + "\n" +
-      "        let name2 = link.classList[2];" + "\n" +
-			"" + "\n" +
-      "        let elem1 = elemsMap[name1];" + "\n" +
-      "        let elem2 = elemsMap[name2];" + "\n" +
-			"" + "\n" +
-      "        addItemToMapOfLists(linkedElems, name1, elem2);" + "\n" +
-      "        addItemToMapOfLists(linkedElems, name2, elem1);" + "\n" +
-			"" + "\n" +
-      "        addItemToMapOfLists(linkedLinks, name1, link);" + "\n" +
-      "        addItemToMapOfLists(linkedLinks, name2, link);" + "\n" +
-      "      }" + "\n" +
-      "    }" + "\n" +
-      "  });" + "\n" +
-			"" + "\n" +
-      "  let selectedElems = [];" + "\n" +
-      "  let selectedLinks = [];" + "\n" +
-      "  let selectedElemName = null;" + "\n" +
-			"" + "\n" +
-      "  function clearSelected() {" + "\n" +
-      "    selectedElems.forEach(item => {" + "\n" +
-      "      item.classList.remove('selected');" + "\n" +
-      "    });" + "\n" +
-      "    selectedElems = [];" + "\n" +
-			"" + "\n" +
-      "    selectedLinks.forEach(item => {" + "\n" +
-      "      item.classList.remove('selected');" + "\n" +
-      "    });" + "\n" +
-      "    selectedLinks = [];" + "\n" +
-      "  }" + "\n" +
-			"" + "\n" +
-      "  function selectAll() {" + "\n" +
-      "    selectedElemName = null;" + "\n" +
-			"" + "\n" +
-      "    selectedElems = Array.from(elems);" + "\n" +
-      "    selectedElems.forEach(item => {" + "\n" +
-      "      item.classList.add('selected');" + "\n" +
-      "    });" + "\n" +
-			"" + "\n" +
-      "    selectedLinks = Array.from(links);" + "\n" +
-      "    selectedLinks.forEach(item => {" + "\n" +
-      "      item.classList.add('selected');" + "\n" +
-      "    });" + "\n" +
-      "  }" + "\n" +
-			"" + "\n" +
-      "  function selectElem(elemName) {" + "\n" +
-      "    if (elemName === selectedElemName) {" + "\n" +
-      "      selectAll();" + "\n" +
-			"" + "\n" +
-      "    } else {" + "\n" +
-      "      clearSelected();" + "\n" +
-      "      selectedElemName = elemName;" + "\n" +
-			"" + "\n" +
-      "      elemsMap[elemName].classList.add('selected');" + "\n" +
-      "      selectedElems.push(elemsMap[elemName]);" + "\n" +
-			"" + "\n" +
-      "      linkedElems[elemName].forEach(linkedElem => {" + "\n" +
-      "        selectedElems.push(linkedElem);" + "\n" +
-      "        linkedElem.classList.add('selected');" + "\n" +
-      "      });" + "\n" +
-			"" + "\n" +
-      "      linkedLinks[elemName].forEach(linkedLink => {" + "\n" +
-      "        selectedLinks.push(linkedLink);" + "\n" +
-      "        linkedLink.classList.add('selected');" + "\n" +
-      "      });" + "\n" +
-      "    }" + "\n" +
-      "  }" + "\n" +
-			"" + "\n" +
-      "  Object.keys(elemsMap).forEach(name => {" + "\n" +
-      "    elemsMap[name].onclick = () => { selectElem(name); };" + "\n" +
-      "  });" + "\n" +
-			"" + "\n" +
-      "  selectAll();" + "\n" +
-      "}" + "\n" +
-			"" + "\n" +
-      "document.addEventListener('DOMContentLoaded', (event) => {" + "\n" +
-      "  main();" + "\n" +
-      "});"
-		);
+		final String text = getData("default.js");
+		if (text == null) {
+			return null;
+		}
+		script.setTextContent(text);
 		return script;
 	}
 
+	private static String getData(final String name) {
+		try {
+			final InputStream is = SvgGraphics.class.getResourceAsStream("/svg/" + name);
+			return FileUtils.readText(is);
+		} catch (IOException e) {
+			e.printStackTrace();
+			return null;
+		}
+	}
+
 	private Element getPathHover(String hover) {
 		final Element style = simpleElement("style");
 		final CDATASection cdata = document.createCDATASection("path:hover { stroke: " + hover + " !important;}");
@@ -1066,6 +977,7 @@ public class SvgGraphics {
 	}
 
 	public void startGroupWithClass(String groupClasses) {
+
 		pendingAction.add(0, (Element) document.createElement("g"));
 		pendingAction.get(0).setAttribute("class", groupClasses);
 	}

src/net/sourceforge/plantuml/tim/TContext.java

@@ -50,7 +50,6 @@ import net.sourceforge.plantuml.LineLocation;
 import net.sourceforge.plantuml.StringLocated;
 import net.sourceforge.plantuml.command.CommandExecutionResult;
 import net.sourceforge.plantuml.json.Json;
-import net.sourceforge.plantuml.json.JsonObject;
 import net.sourceforge.plantuml.json.JsonValue;
 import net.sourceforge.plantuml.preproc.Defines;
 import net.sourceforge.plantuml.preproc.FileWithSuffix;
@@ -197,17 +196,6 @@ public class TContext {
 		}
 	}
 
-	private TValue fromJsonOld(TMemory memory, String name) {
-		final int x = name.indexOf('.');
-		final TValue data = memory.getVariable(name.substring(0, x));
-		if (data == null) {
-			return null;
-		}
-		final JsonObject json = (JsonObject) data.toJson();
-		final JsonValue result = json.get(name.substring(x + 1));
-		return TValue.fromJson(result);
-	}
-
 	private CodeIterator buildCodeIterator(TMemory memory, List<StringLocated> body) {
 		final CodeIterator it10 = new CodeIteratorImpl(body);
 		final CodeIterator it20 = new CodeIteratorLongComment(it10, debug);
@@ -498,9 +486,13 @@ public class TContext {
 						if (reader == null) {
 							throw EaterException.located("cannot include " + location);
 						}
-						ReadLine readerline = ReadLineReader.create(reader, location, s.getLocation());
-						readerline = new UncommentReadLine(readerline);
-						sub = Sub.fromFile(readerline, blocname, this, memory);
+						try {
+							ReadLine readerline = ReadLineReader.create(reader, location, s.getLocation());
+							readerline = new UncommentReadLine(readerline);
+							sub = Sub.fromFile(readerline, blocname, this, memory);
+						} finally {
+							reader.close();
+						}
 					}
 				} catch (IOException e) {
 					e.printStackTrace();
@@ -526,7 +518,7 @@ public class TContext {
 		include.analyze(this, memory);
 		final String definitionName = include.getLocation();
 		final List<String> definition = definitionsContainer.getDefinition(definitionName);
-		ReadLine reader2 = new ReadLineList(definition, s.getLocation());
+		final ReadLine reader2 = new ReadLineList(definition, s.getLocation());
 
 		try {
 			final List<StringLocated> body = new ArrayList<StringLocated>();
@@ -541,6 +533,12 @@ public class TContext {
 		} catch (IOException e) {
 			e.printStackTrace();
 			throw EaterException.located("" + e);
+		} finally {
+			try {
+				reader2.close();
+			} catch (IOException e) {
+				e.printStackTrace();
+			}
 		}
 	}
 
@@ -565,9 +563,7 @@ public class TContext {
 					throw EaterException.located("Cannot open URL");
 				}
 				reader2 = PreprocessorUtils.getReaderIncludeUrl2(url, s, suf, charset);
-
-			}
-			if (location.startsWith("<") && location.endsWith(">")) {
+			} else if (location.startsWith("<") && location.endsWith(">")) {
 				reader2 = PreprocessorUtils.getReaderStdlibInclude(s, location.substring(1, location.length() - 1));
 			} else {
 				final FileWithSuffix f2 = importedFiles.getFile(location, suf);
@@ -614,6 +610,14 @@ public class TContext {
 		} catch (IOException e) {
 			e.printStackTrace();
 			throw EaterException.located("cannot include " + e);
+		} finally {
+			if (reader2 != null) {
+				try {
+					reader2.close();
+				} catch (IOException e) {
+					e.printStackTrace();
+				}
+			}
 		}
 
 		throw EaterException.located("cannot include " + location);

src/net/sourceforge/plantuml/timingdiagram/TimingRuler.java

@@ -37,6 +37,8 @@ package net.sourceforge.plantuml.timingdiagram;
 import java.awt.geom.Dimension2D;
 import java.math.BigDecimal;
 import java.util.Collection;
+import java.util.Comparator;
+import java.util.Set;
 import java.util.SortedSet;
 import java.util.TreeSet;
 
@@ -76,6 +78,9 @@ public class TimingRuler {
 		if (times.size() == 0) {
 			this.times.add(new TimeTick(BigDecimal.ZERO, TimingFormat.DECIMAL));
 		}
+		if (getMax().getTime().signum() > 0 && getMin().getTime().signum() < 0) {
+			this.times.add(new TimeTick(BigDecimal.ZERO, TimingFormat.DECIMAL));
+		}
 	}
 
 	public TimingRuler(ISkinParam skinParam) {
@@ -99,22 +104,39 @@ public class TimingRuler {
 
 	private long highestCommonFactor() {
 		if (highestCommonFactorInternal == -1) {
-			for (TimeTick time : times) {
-				long tick = time.getTime().longValue();
-				if (tick > 0) {
-					if (highestCommonFactorInternal == -1) {
-						highestCommonFactorInternal = time.getTime().longValue();
-					} else {
-						highestCommonFactorInternal = computeHighestCommonFactor(highestCommonFactorInternal,
-								Math.abs(time.getTime().longValue()));
+			for (long tick : getAbsolutesTicks()) {
+				if (highestCommonFactorInternal == -1) {
+					highestCommonFactorInternal = tick;
+				} else {
+					final long candidate = computeHighestCommonFactor(highestCommonFactorInternal, tick);
+					final double size = (getMax().getTime().doubleValue() - getMin().getTime().doubleValue())
+							/ candidate;
+					if (size > 200) {
+						return highestCommonFactorInternal;
 					}
+					highestCommonFactorInternal = candidate;
 				}
 			}
 		}
 		return highestCommonFactorInternal;
 	}
 
-	private int getNbTick(boolean capped) {
+	private Set<Long> getAbsolutesTicks() {
+		final Set<Long> result = new TreeSet<Long>(new Comparator<Long>() {
+			public int compare(Long o1, Long o2) {
+				return o2.compareTo(o1);
+			}
+		});
+		for (TimeTick time : times) {
+			final long value = Math.abs(time.getTime().longValue());
+			if (value > 0) {
+				result.add(value);
+			}
+		}
+		return result;
+	}
+
+	private int getNbTick() {
 		if (times.size() == 0) {
 			return 1;
 		}
@@ -123,7 +145,9 @@ public class TimingRuler {
 	}
 
 	public double getWidth() {
-		return getNbTick(false) * tickIntervalInPixels;
+		final double delta = getMax().getTime().doubleValue() - getMin().getTime().doubleValue();
+
+		return (delta / tickUnitary() + 1) * tickIntervalInPixels;
 	}
 
 	public final double getPosInPixel(TimeTick when) {
@@ -160,11 +184,13 @@ public class TimingRuler {
 		ug = ug.apply(new UStroke(2.0)).apply(HColorUtils.BLACK);
 		final double tickHeight = 5;
 		final ULine line = ULine.vline(tickHeight);
-		final int nb = getNbTick(true);
-		for (int i = 0; i <= nb; i++) {
-			ug.apply(UTranslate.dx(tickIntervalInPixels * i)).draw(line);
+		final double firstTickPosition = getPosInPixelInternal(getFirstPositiveOrZeroValue().doubleValue());
+		int nb = 0;
+		while (firstTickPosition + nb * tickIntervalInPixels <= getWidth()) {
+			ug.apply(UTranslate.dx(firstTickPosition + nb * tickIntervalInPixels)).draw(line);
+			nb++;
 		}
-		ug.draw(ULine.hline(nb * tickIntervalInPixels));
+		ug.apply(UTranslate.dx(firstTickPosition)).draw(ULine.hline((nb - 1) * tickIntervalInPixels));
 
 		for (long round : roundValues()) {
 			final TextBlock text = getTimeTextBlock(round);
@@ -173,6 +199,15 @@ public class TimingRuler {
 		}
 	}
 
+	private BigDecimal getFirstPositiveOrZeroValue() {
+		for (TimeTick time : times) {
+			if (time.getTime().signum() >= 0) {
+				return time.getTime();
+			}
+		}
+		throw new IllegalStateException();
+	}
+
 	private Collection<Long> roundValues() {
 		final SortedSet<Long> result = new TreeSet<Long>();
 		if (tickUnitary == 0) {
@@ -181,7 +216,7 @@ public class TimingRuler {
 				result.add(round);
 			}
 		} else {
-			final int nb = getNbTick(true);
+			final int nb = getNbTick();
 			for (int i = 0; i <= nb; i++) {
 				final long round = tickToTime(i);
 				result.add(round);
@@ -196,7 +231,7 @@ public class TimingRuler {
 	public void drawVlines(UGraphic ug, double height) {
 		ug = applyForVLines(ug);
 		final ULine line = ULine.vline(height);
-		final int nb = getNbTick(true);
+		final int nb = getNbTick();
 		for (int i = 0; i <= nb; i++) {
 			ug.apply(UTranslate.dx(tickIntervalInPixels * i)).draw(line);
 		}

src/net/sourceforge/plantuml/ugraphic/AbstractCommonUGraphic.java

@@ -172,10 +172,11 @@ public abstract class AbstractCommonUGraphic implements UGraphic {
 
 	public void startGroup(String groupId) {
 	}
-
+	
 	public void startGroupWithClass(String groupClasses) {
 	}
 
+
 	public void closeGroup() {
 	}
 

src/net/sourceforge/plantuml/ugraphic/PlacementStrategyY1Y2Right.java

@@ -0,0 +1,66 @@
+/* ========================================================================
+ * PlantUML : a free UML diagram generator
+ * ========================================================================
+ *
+ * (C) Copyright 2009-2020, 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.ugraphic;
+
+import java.awt.geom.Dimension2D;
+import java.awt.geom.Point2D;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+import net.sourceforge.plantuml.graphic.StringBounder;
+import net.sourceforge.plantuml.graphic.TextBlock;
+
+public class PlacementStrategyY1Y2Right extends AbstractPlacementStrategy {
+
+	public PlacementStrategyY1Y2Right(StringBounder stringBounder) {
+		super(stringBounder);
+	}
+
+	public Map<TextBlock, Point2D> getPositions(double width, double height) {
+		final double usedHeight = getSumHeight();
+
+		final double space = (height - usedHeight) / (getDimensions().size() + 1);
+		final Map<TextBlock, Point2D> result = new LinkedHashMap<TextBlock, Point2D>();
+		double y = space;
+		for (Map.Entry<TextBlock, Dimension2D> ent : getDimensions().entrySet()) {
+			final double x = width - ent.getValue().getWidth();
+			result.put(ent.getKey(), new Point2D.Double(x, y));
+			y += ent.getValue().getHeight() + space;
+		}
+		return result;
+	}
+
+}

src/net/sourceforge/plantuml/ugraphic/svg/DriverEllipseSvg.java

@@ -76,7 +76,7 @@ public class DriverEllipseSvg implements UDriver<SvgGraphics> {
 					gr.getPolicy());
 			svg.setFillColor("url(#" + id + ")");
 		} else if (back == null || back instanceof HColorBackground) {
-			svg.setFillColor("none");
+			svg.setFillColor("#00000000");
 		} else {
 			final String backcolor = mapper.toSvg(back);
 			svg.setFillColor(backcolor);

src/net/sourceforge/plantuml/ugraphic/svg/DriverTextSvg.java

@@ -87,7 +87,8 @@ public class DriverTextSvg implements UDriver<SvgGraphics> {
 		} else if (fontConfiguration.containsStyle(FontStyle.STRIKE)) {
 			textDecoration = "line-through";
 		} else if (fontConfiguration.containsStyle(FontStyle.WAVE)) {
-			// Beware that some current SVG implementations do not render the wave properly (e.g. Chrome just draws a straight line)
+			// Beware that some current SVG implementations do not render the wave properly
+			// (e.g. Chrome just draws a straight line)
 			// Works ok on Firefox 85.
 			textDecoration = "wavy underline";
 		}

src/net/sourceforge/plantuml/ugraphic/svg/UGraphicSvg.java

@@ -179,12 +179,13 @@ public class UGraphicSvg extends AbstractUGraphic<SvgGraphics> implements ClipCo
 	public void startGroup(String groupId) {
 		getGraphicObject().startGroup(groupId);
 	}
-
+	
 	@Override
 	public void startGroupWithClass(String groupClasses) {
 		getGraphicObject().startGroupWithClass(groupClasses);
 	}
 
+
 	@Override
 	public void closeGroup() {
 		getGraphicObject().closeGroup();

src/net/sourceforge/plantuml/version/LicenseInfo.java

@@ -217,13 +217,16 @@ public class LicenseInfo {
 		if (br == null) {
 			return null;
 		}
-		final String s = br.readLine();
-		br.close();
-		final LicenseInfo result = retrieveNamed(s);
-		if (result != null) {
-			Log.info("Reading license from " + f.getAbsolutePath());
+		try {
+			final String s = br.readLine();
+			final LicenseInfo result = retrieveNamed(s);
+			if (result != null) {
+				Log.info("Reading license from " + f.getAbsolutePath());
+			}
+			return result;
+		} finally {
+			br.close();
 		}
-		return result;
 	}
 
 	public static void main(String[] args) {

src/net/sourceforge/plantuml/version/Version.java

@@ -68,7 +68,7 @@ public class Version {
 	private static String dotted(int nb) {
 		final String minor = "" + nb % MAJOR_SEPARATOR;
 		final String major = "" + nb / MAJOR_SEPARATOR;
-		return major + "." + minor.substring(0, 4) + "." + minor.substring(4);
+		return major + "." + minor.substring(0, 4) + "." + Integer.parseInt(minor.substring(4));
 	}
 
 	public static String versionString(int size) {
@@ -80,7 +80,7 @@ public class Version {
 	}
 
 	public static int beta() {
-		final int beta = 0;
+		final int beta = 11;
 		return beta;
 	}