added lifeline-style

src/renderer.typ

@@ -1,5 +1,5 @@
 #import "@preview/cetz:0.2.2": canvas, draw
-#import "utils.typ": get-participants-i
+#import "utils.typ": get-participants-i, get-style
 #import "group.typ"
 #import "sequence.typ"
 #import "separator.typ"
@@ -209,10 +209,12 @@
 
       // Draw lifeline rectangles (reverse for bottom to top)
       for rect in rects.rev() {
-        let (cx, y0, y1) = rect
+        let (cx, y0, y1, style) = rect
+        let style = get-style("lifeline", style)
         draw.rect(
           (cx - LIFELINE-W / 2, y0),
-          (cx + LIFELINE-W / 2, y1)
+          (cx + LIFELINE-W / 2, y1),
+          ..style
         )
       }
 

src/sequence.typ

@@ -10,10 +10,12 @@
   color: black,
   flip: false,
   enable-dst: false,
+  create-dst: false,
   disable-dst: false,
   destroy-dst: false,
   disable-src: false,
   destroy-src: false,
+  lifeline-style: auto
 ) = {
   return ((
     type: "seq",
@@ -25,10 +27,12 @@
     color: color,
     flip: flip,
     enable-dst: enable-dst,
+    create-dst: create-dst,
     disable-dst: disable-dst,
     destroy-dst: destroy-dst,
     disable-src: disable-src,
     destroy-src: destroy-src,
+    lifeline-style: lifeline-style,
   ),)
 }
 
@@ -45,7 +49,7 @@
   if elmt.disable-src {
     let src-line = lifelines.at(i1)
     src-line.level -= 1
-    src-line.lines.push(("disable", y, auto))
+    src-line.lines.push(("disable", y))
     lifelines.at(i1) = src-line
   }
   if elmt.destroy-src {
@@ -142,7 +146,12 @@
   }
   if elmt.enable-dst {
     let dst-line = lifelines.at(i2)
-    dst-line.lines.push(("enable", y, auto))
+    dst-line.lines.push(("enable", y, elmt.lifeline-style))
+    lifelines.at(i2) = dst-line
+  }
+  if elmt.create-dst {
+    let dst-line = lifelines.at(i2)
+    dst-line.lines.push(("create", y))
     lifelines.at(i2) = dst-line
   }
   y -= Y-SPACE

src/utils.typ

@@ -24,4 +24,20 @@
     }
   }
   return (min-i, max-i)
+}
+
+#let get-style(base-name, mods) = {
+  let style = if base-name == "lifeline" {(
+    fill: white,
+    stroke: black + 1pt
+  )}
+
+  if mods == auto {
+    return style
+  }
+  if type(mods) == dictionary {
+    return style + mods
+  }
+
+  panic("Invalid type for parameter mods, expected auto or dictionary, got " + str(type(mods)))
 }