Improvements to styling of connection lines

[simantics/platform.git] / bundles / org.simantics.diagram / src / org / simantics / diagram / adapter / RouteGraphUtils.java

diff --git a/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/RouteGraphUtils.java b/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/RouteGraphUtils.java
index d6a59a0cbc26a9284e0e656c2062c3b6fae4a2a1..3ff98cd0b1cc115d33687764e650282c707623bb 100644 (file)
--- a/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/RouteGraphUtils.java
+++ b/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/RouteGraphUtils.java
@@ -20,6 +20,7 @@ import java.awt.geom.AffineTransform;
 import java.awt.geom.Rectangle2D;
 import java.util.Collection;
 import java.util.Collections;
+import java.util.List;
 import java.util.Map;
 import java.util.Set;
 
@@ -31,6 +32,7 @@ import org.simantics.db.Statement;
 import org.simantics.db.common.procedure.adapter.TransientCacheListener;
 import org.simantics.db.common.request.ResourceRead2;
 import org.simantics.db.common.request.UnaryRead;
+import org.simantics.db.common.utils.ListUtils;
 import org.simantics.db.common.utils.NameUtils;
 import org.simantics.db.exception.DatabaseException;
 import org.simantics.diagram.connection.ConnectionVisuals;
@@ -39,6 +41,7 @@ import org.simantics.diagram.connection.RouteLine;
 import org.simantics.diagram.connection.RouteNode;
 import org.simantics.diagram.connection.RouteTerminal;
 import org.simantics.diagram.connection.RouteTerminalPosition;
+import org.simantics.diagram.connection.rendering.AggregateConnectionStyle;
 import org.simantics.diagram.connection.rendering.BasicConnectionStyle;
 import org.simantics.diagram.connection.rendering.ConnectionStyle;
 import org.simantics.diagram.connection.rendering.ExampleConnectionStyle;
@@ -65,8 +68,8 @@ import org.simantics.g2d.element.ElementUtils;
 import org.simantics.g2d.element.IElement;
 import org.simantics.g2d.element.handler.EdgeVisuals.EdgeEnd;
 import org.simantics.g2d.element.handler.TerminalLayout;
-import org.simantics.g2d.elementclass.RouteGraphConnectionClass;
 import org.simantics.g2d.elementclass.FlagClass.Type;
+import org.simantics.g2d.elementclass.RouteGraphConnectionClass;
 import org.simantics.layer0.Layer0;
 import org.simantics.scenegraph.g2d.nodes.connection.RouteGraphChangeEvent;
 import org.simantics.scenegraph.utils.GeometryUtils;
@@ -543,13 +546,30 @@ public class RouteGraphUtils {
      * @return
      * @throws DatabaseException
      */
-    protected static ConnectionStyle readConnectionStyle(ReadGraph graph, IModelingRules modelingRules, Resource connection, StructuralResource2 STR) throws DatabaseException {
+    protected static ConnectionStyle readConnectionStyle(ReadGraph graph, IModelingRules modelingRules, Resource connection, StructuralResource2 STR, DiagramResource DIA) throws DatabaseException {
+        Resource connectionStyle = graph.getPossibleObject(connection, DIA.HasConnectionStyle);
         Resource connectionType = null;
-        if (modelingRules != null)
-            connectionType = modelingRules.getConnectionType(graph, connection);
-        if (connectionType == null)
-            connectionType = graph.getPossibleObject(connection, STR.HasConnectionType);
-        return connectionType != null ? readConnectionStyleFromConnectionType(graph, connectionType) : DEFAULT_CONNECTION_STYLE;
+        if (connectionStyle == null) {
+            if (modelingRules != null)
+                connectionType = modelingRules.getConnectionType(graph, connection);
+            if (connectionType == null)
+                connectionType = graph.getPossibleObject(connection, STR.HasConnectionType);
+            connectionStyle = graph.getPossibleObject(connectionType, DIA.HasConnectionStyle);
+        }
+        if (connectionStyle != null) {
+            List<Resource> lineStyles = ListUtils.toList(graph, connectionStyle);
+            if (lineStyles.size() != 1) {
+                AggregateConnectionStyle aggregate = new AggregateConnectionStyle();
+                for (Resource connectionLine : ListUtils.toList(graph, connectionStyle)) {
+                    aggregate.addStyle(readConnectionStyleFromConnectionType(graph, connectionLine));
+                }
+                return aggregate;
+            } else {
+                return readConnectionStyleFromConnectionType(graph, lineStyles.get(0));
+            }
+        } else {
+            return connectionType != null ? readConnectionStyleFromConnectionType(graph, connectionType) : DEFAULT_CONNECTION_STYLE;
+        }
     }
 
     protected static ConnectionStyle readConnectionStyleFromConnectionType(ReadGraph graph, Resource connectionType) throws DatabaseException {
@@ -589,6 +609,7 @@ public class RouteGraphUtils {
             lineStroke = new BasicStroke(0.1f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL, 10, null, 0);
         Stroke routeLineStroke = GeometryUtils.scaleStrokeWidth(lineStroke, 2);
         double rounding = cv.rounding == null ? 0.0 : cv.rounding;
+        double offset = cv.offset == null ? 0.0 : cv.offset;
 
         return new BasicConnectionStyle(
                 lineColor,
@@ -597,7 +618,8 @@ public class RouteGraphUtils {
                 lineStroke,
                 routeLineStroke,
                 degenerateLineLength,
-                rounding);
+                rounding,
+                offset);
     }
 
     public static void scheduleSynchronize(Session session, Resource connection, RouteGraphChangeEvent event) {