#350 Boundaries support descriptions

- Boundary(..., ?descr)
- Enterprise_Boundary(..., ?descr)
- System_Boundary(..., ?descr)
- Container_Boundary(..., ?descr)

C4.puml

@@ -36,6 +36,7 @@ rectangle C4VersionDetailsArea <<legendArea>> [
 !$BOUNDARY_BORDER_STYLE ?= "dashed"
 ' boundary symbols written in the same line, typically only 50% of the size in element
 !$BOUNDARY_IMAGE_SIZE_FACTOR ?= 0.5
+!$BOUNDARY_DESCR_MAX_CHAR_WIDTH ?= 35
 
 !$LEGEND_TITLE_COLOR ?= "#000000"
 !$LEGEND_FONT_COLOR ?= "#FFFFFF"
@@ -926,9 +927,11 @@ $line
 $defineSkinparams($tagStereo, $bgColor, $fontColor, $borderColor, $shadowing, $shape, $borderStyle, $borderThickness)
   !if ($sprite!="")
 %set_variable_value("$" + $tagStereo + "ElementTagSprite", $sprite)
+!log "DefinedlegendSprite:" + $legendSprite
     !if ($legendSprite == "")
       !$legendSprite = $smallVersionSprite($sprite)
     !endif
+!log "CalculatedlegendSprite:" + $legendSprite
   !endif
   !if ($techn != "")
 %set_variable_value("$" + $tagStereo + "ElementTagTechn", $techn)
@@ -1412,24 +1415,28 @@ $getLegendArea($alias, $hideStereotype, $details)
   !return $boundaryTags
 !endfunction
 
-!function $getBoundary($sprite, $label, $type)
+!function $getBoundary($label, $type, $descr, $sprite)
   !$line = '== '
   !if ($sprite != "")
+    ' add sprite in label line that it is more compact
     !$line = $line + $getSprite($smallVersionSprite($sprite, $BOUNDARY_IMAGE_SIZE_FACTOR)) + ' '
   !endif
   !$line = $line + $breakLabel($label)
   !if ($type != "")
     !$line = $line + '\n<size:' + $TECHN_FONT_SIZE + '>[' + $type + ']</size>'
   !endif
+  !if ($descr != "")
+    !$line = $line + '\n\n' + $breakDescr($descr, $BOUNDARY_DESCR_MAX_CHAR_WIDTH)
+  !endif
   !return $line
 !endfunction
 
-!unquoted procedure Boundary($alias, $label, $type="", $tags="", $link="")
+!unquoted procedure Boundary($alias, $label, $type="", $tags="", $link="", $descr = "")
 !$boundaryTags = $addBoundaryPostfix($tags)
 ' boundary $type reuses $techn definition of $boundaryTags
 !$type=$toElementArg($type, $boundaryTags, "ElementTagTechn", "boundary")
 !$sprite=$toElementArg("", $boundaryTags, "ElementTagSprite", "boundary")
-rectangle "$getBoundary($sprite, $label, $type)" $toStereos("boundary", $boundaryTags) as $alias $getLink($link)
+rectangle "$getBoundary($label, $type, $descr, $sprite)" $toStereos("boundary", $boundaryTags) as $alias $getLink($link)
 !endprocedure
 
 ' Boundary Styling

C4_Container.puml

@@ -92,12 +92,12 @@ endlegend
 ' Boundaries
 ' ##################################
 
-!unquoted procedure Container_Boundary($alias, $label, $tags="", $link="")
+!unquoted procedure Container_Boundary($alias, $label, $tags="", $link="", $descr = "")
   !if ($tags != "")
     !$allTags = $tags + '+container'
   !else
     !$allTags = 'container'
   !endif
   ' $type defined via $tag style
-  Boundary($alias, $label, "", $allTags, $link)
+  Boundary($alias, $label, "", $allTags, $link, $descr)
 !endprocedure

C4_Context.puml

@@ -413,22 +413,22 @@ rectangle "$getPerson($label, $type, $descr, $sprite)$getProps()" $toStereos("ex
 ' Boundaries
 ' ##################################
 
-!unquoted procedure Enterprise_Boundary($alias, $label, $tags="", $link="")
+!unquoted procedure Enterprise_Boundary($alias, $label, $tags="", $link="", $descr = "")
   !if ($tags != "")
     !$allTags = $tags + '+enterprise'
   !else
     !$allTags = 'enterprise'
   !endif
   ' $type defined via $tag style
-  Boundary($alias, $label, "", $allTags, $link)
+  Boundary($alias, $label, "", $allTags, $link, $descr)
 !endprocedure
 
-!unquoted procedure System_Boundary($alias, $label, $tags="", $link="")
+!unquoted procedure System_Boundary($alias, $label, $tags="", $link="", $descr = "")
   !if ($tags != "")
     !$allTags = $tags + '+system'
   !else
     !$allTags = 'system'
   !endif
   ' $type defined via $tag style
-  Boundary($alias, $label, "", $allTags, $link)
+  Boundary($alias, $label, "", $allTags, $link, $descr)
 !endprocedure

README.md

@@ -241,9 +241,9 @@ SHOW_LEGEND()
     - `System_Ext(alias, label, ?descr, ?sprite, ?tags, ?link, ?type, ?baseShape)`
     - `SystemDb_Ext(alias, label, ?descr, ?sprite, ?tags, ?link, ?type)`
     - `SystemQueue_Ext(alias, label, ?descr, ?sprite, ?tags, ?link, ?type)`
-    - `Boundary(alias, label, ?type, ?tags, ?link)`
-    - `Enterprise_Boundary(alias, label, ?tags, ?link)`
-    - `System_Boundary(alias, label, ?tags, ?link)`
+    - `Boundary(alias, label, ?type, ?tags, ?link, ?descr)`
+    - `Enterprise_Boundary(alias, label, ?tags, ?link, ?descr)`
+    - `System_Boundary(alias, label, ?tags, ?link, ?descr)`
   - Sprites:
     - `person`
     - `person2`
@@ -262,7 +262,7 @@ SHOW_LEGEND()
     - `Container_Ext(alias, label, ?techn, ?descr, ?sprite, ?tags, ?link, ?baseShape)`
     - `ContainerDb_Ext(alias, label, ?techn, ?descr, ?sprite, ?tags, ?link)`
     - `ContainerQueue_Ext(alias, label, ?techn, ?descr, ?sprite, ?tags, ?link)`
-    - `Container_Boundary(alias, label, ?tags, ?link)`
+    - `Container_Boundary(alias, label, ?tags, ?link, ?descr)`
 
 ### Component diagram
 

percy/TestBoundaryTagSupport.puml

@@ -6,19 +6,21 @@
   !include https://raw.githubusercontent.com/plantuml-stdlib/C4-PlantUML/master/C4_Component.puml
 !endif
 
-UpdateBoundaryStyle($bgColor="gold", $fontColor="brown", $borderColor="brown", $sprite="person,scale=1", $legendSprite="person2,scale=0.5")
+UpdateBoundaryStyle($bgColor="gold", $fontColor="brown", $borderColor="brown", $sprite="person", $legendSprite="person2,scale=0.3")
 ' re-set $bgColor avoids '(no back color)' in legend
-UpdateSystemBoundaryStyle($bgColor="gold", $fontColor="white", $borderColor="white", $sprite=robot, $legendSprite="robot2")
+UpdateSystemBoundaryStyle($bgColor="gold", $fontColor="white", $borderColor="white", $sprite=robot, $legendSprite="robot2,scale=0.3")
+
+AddElementTag("special", $sprite="person", $legendSprite="person,scale=0.3")
 
 AddBoundaryTag("specialSystem", $bgColor="green", $fontColor="white", $borderColor="blue", $shadowing="true", $shape = RoundedBoxShape(), $type="A SPECIAL SYSTEM BOUNDARY", $sprite="robot,scale=0.5,color=black", $legendSprite="robot2,scale=0.3,color=black")
-AddBoundaryTag("existingContainersBoundary", $bgColor="red", $fontColor="white", $borderColor="white", $type="Existing CONTAINER BOUNDARY", $legendText="container boundary with existing components")
+AddBoundaryTag("existingContainersBoundary", $bgColor="red", $fontColor="white", $borderColor="white", $type="Existing CONTAINER BOUNDARY", $legendText="container boundary with existing components", $sprite="robot")
 
 System_Boundary(sb, "A System Boundary") {
 }
 
-System_Boundary(sb1, "Special System 1 Boundary", $tags="specialSystem") {
-  Container_Boundary(cb1, "Container Boundary\nwith tag", $tags="existingContainersBoundary") {
-    Component(e1, "existing 1", "xyz")
+System_Boundary(sb1, "Special System 1 Boundary", $tags="specialSystem", $descr="A long description ... A long description ... A long description ... A long description") {
+  Container_Boundary(cb1, "Container Boundary\nwith tag", $tags="existingContainersBoundary", $descr="A long description ... A long description ... A long description ... A long description") {
+    Component(e1, "existing 1", "xyz", $tags="special")
     Component(e2, "existing 2", "xyz")
   }
   Container_Boundary(cb2, "A Container Boundary") {
@@ -38,7 +40,7 @@ Boundary(anotherBoundary, "Another Boundary", $type="BOUNDARY TYPE", $tags="v1")
   Component(anotherComponent, "Another Component", $techn="COMPONENT TYPE", $tags="v1", $descr="Component and boundary use different tag name spaces that both v1 tags can use different styles")
 }
 
-Boundary(aBoundary, "A Boundary") {
+Boundary(aBoundary, "A Boundary", $descr="A long description\nwith concrete line breaks\nNew line\nNewLine") {
 }
 
 Lay_R(sb, sb1)