structurizr-export: Adds support for rank and node separation to the StructurizrPlantUMLExporter.

Author: simonbrowndotje

changelog.md

@@ -4,6 +4,7 @@
 
 - structurizr-dsl: Allows archetypes to be used via workspace extension.
 - structurizr-dsl: Fixes https://github.com/structurizr/java/issues/392 (SVG not supported in base 64 encoding not mentioned in documentation).
+- structurizr-export: Adds support for rank and node separation to the StructurizrPlantUMLExporter.
 
 ## v4.0.0 (28th March 2025)
 

structurizr-export/src/main/java/com/structurizr/export/plantuml/StructurizrPlantUMLExporter.java

@@ -42,6 +42,12 @@ protected void writeHeader(ModelView view, IndentingWriter writer) {
                         writer.writeLine("top to bottom direction");
                         break;
                 }
+
+                // the default 300px rank separation in the Structurizr UI is equivalent to a default of 60 in PlantUML
+                writer.writeLine("skinparam ranksep " + view.getAutomaticLayout().getRankSeparation() / (300/60));
+
+                // the default 300px node separation in the Structurizr UI is equivalent to a default of 30 in PlantUML
+                writer.writeLine("skinparam nodesep " + view.getAutomaticLayout().getNodeSeparation() / (300/30));
             } else {
                 writer.writeLine("top to bottom direction");
             }

structurizr-export/src/test/java/com/structurizr/export/plantuml/structurizr/36141-Components.puml

@@ -3,6 +3,8 @@ set separator none
 title Internet Banking System - API Application - Components
 
 top to bottom direction
+skinparam ranksep 60
+skinparam nodesep 30
 
 skinparam {
   arrowFontSize 10

structurizr-export/src/test/java/com/structurizr/export/plantuml/structurizr/36141-Containers.puml

@@ -3,6 +3,8 @@ set separator none
 title Internet Banking System - Containers
 
 top to bottom direction
+skinparam ranksep 60
+skinparam nodesep 30
 
 skinparam {
   arrowFontSize 10

structurizr-export/src/test/java/com/structurizr/export/plantuml/structurizr/36141-DevelopmentDeployment.puml

@@ -3,6 +3,8 @@ set separator none
 title Internet Banking System - Deployment - Development
 
 top to bottom direction
+skinparam ranksep 60
+skinparam nodesep 30
 
 skinparam {
   arrowFontSize 10

structurizr-export/src/test/java/com/structurizr/export/plantuml/structurizr/36141-LiveDeployment.puml

@@ -3,6 +3,8 @@ set separator none
 title Internet Banking System - Deployment - Live
 
 top to bottom direction
+skinparam ranksep 60
+skinparam nodesep 30
 
 skinparam {
   arrowFontSize 10

structurizr-export/src/test/java/com/structurizr/export/plantuml/structurizr/36141-SignIn.puml

@@ -3,6 +3,8 @@ set separator none
 title API Application - Dynamic
 
 top to bottom direction
+skinparam ranksep 60
+skinparam nodesep 30
 
 skinparam {
   arrowFontSize 10

structurizr-export/src/test/java/com/structurizr/export/plantuml/structurizr/36141-SystemContext.puml

@@ -3,6 +3,8 @@ set separator none
 title Internet Banking System - System Context
 
 top to bottom direction
+skinparam ranksep 60
+skinparam nodesep 30
 
 skinparam {
   arrowFontSize 10

structurizr-export/src/test/java/com/structurizr/export/plantuml/structurizr/36141-SystemLandscape.puml

@@ -3,6 +3,8 @@ set separator none
 title System Landscape
 
 top to bottom direction
+skinparam ranksep 60
+skinparam nodesep 30
 
 skinparam {
   arrowFontSize 10

structurizr-export/src/test/java/com/structurizr/export/plantuml/structurizr/54915-AmazonWebServicesDeployment.puml

@@ -3,6 +3,8 @@ set separator none
 title Spring PetClinic - Deployment - Live
 
 left to right direction
+skinparam ranksep 60
+skinparam nodesep 30
 
 skinparam {
   arrowFontSize 10