gallery/example1.typ

@@ -29,28 +29,3 @@ Alice <-- Bob: Another authentication Response
   _seq("Alice", "Bob", comment: "This is a test")
   _seq("Alice", "Callum", comment: "This is another test with a long text")
 })
-
-#chronos.diagram({
-  import "/src/diagram.typ": *
-  _seq("Alice", "Bob", comment: "Authentication Request")
-  _seq("Bob", "Alice", comment: "Authentication Failure")
-
-  _grp("My own label", desc: "My own label2", {
-    _seq("Alice", "Log", comment: "Log attack start")
-    _grp("loop", desc: "1000 times", {
-      _seq("Alice", "Bob", comment: "DNS Attack")
-    })
-    _seq("Alice", "Bob", comment: "Log attack end")
-  })
-})
-
-#chronos.diagram({
-  import "/src/diagram.typ": *
-  _sep("Initialization")
-  _seq("Alice", "Bob", comment: "Authentication Request")
-  _seq("Bob", "Alice", comment: "Authentication Response", dashed: true)
-  
-  _sep("Repetition")
-  _seq("Alice", "Bob", comment: "Another authentication Request")
-  _seq("Bob", "Alice", comment: "another authentication Response", dashed: true)
-})

src/diagram.typ

@@ -1,4 +1,3 @@
-#import "utils.typ": get-group-span
 #import "renderer.typ": render
 
 #let _seq(
@@ -38,43 +37,9 @@
   return false
 }
 
-#let _grp(name, desc: none, type: "default", elmts) = {
-  return ((
-    type: "grp",
-    name: name,
-    desc: desc,
-    grp-type: type,
-    elmts: elmts
-  ),)
-}
-
-#let _sep(name) = {
-  return ((
-    type: "sep",
-    name: name
-  ),)
-}
-
 #let diagram(elements) = {
   let participants = ()
-  let elmts = elements
-  let i = 0
-  while i < elmts.len() {
-    let elmt = elmts.at(i)
-    if elmt.type == "grp" {
-      elmts = (
-        elmts.slice(0, i + 1) +
-        elmt.elmts +
-        ((
-          type: "grp-end"
-        ),) +
-        elmts.slice(i+1)
-      )
-    }
-    i += 1
-  }
-
-  for elmt in elmts {
+  for elmt in elements {
     if elmt.type == "par" {
       participants.push(elmt)
     } else if elmt.type == "seq" {
@@ -87,15 +52,7 @@
     }
   }
 
-  for (i, elmt) in elmts.enumerate() {
-    if elmt.type == "grp" {
-      let (min-i, max-i) = get-group-span(participants, elmt)
-      elmts.at(i).insert("min-i", min-i)
-      elmts.at(i).insert("max-i", max-i)
-    }
-  }
-
-  render(participants, elmts)
+  render(participants, elements)
 }
 
 #let from-plantuml(code) = {

src/renderer.typ

@@ -1,10 +1,16 @@
 #import "@preview/cetz:0.2.2": canvas, draw
-#import "utils.typ": get-participants-i
 
-#let Y-SPACE = 10
+#let Y-SPACE = 20
 #let PAR-PAD = (5pt, 3pt)
 #let PAR-SPACE = 10
 
+#let get-participants-i(participants) = {
+  let pars-i = (:)
+  for (i, p) in participants.enumerate() {
+    pars-i.insert(p.name, i)
+  }
+  return pars-i
+}
 
 #let get-columns-width(participants, elements) = {
   let pars-i = get-participants-i(participants)
@@ -56,44 +62,6 @@
   return widths
 }
 
-#let draw-group(x0, x1, y0, y1, group) = {
-  let m = measure(box(group.name))
-  let w = m.width / 1pt + 15
-  let h = m.height / 1pt + 6
-  draw.rect(
-    (x0, y0),
-    (x1, y1)
-  )
-  draw.merge-path(
-    fill: gray.lighten(20%),
-    close: true,
-    {
-      draw.line(
-        (x0, y0),
-        (x0 + w, y0),
-        (x0 + w, y0 - h / 2),
-        (x0 + w - 5, y0 - h),
-        (x0, y0 - h)
-      )
-    }
-  )
-  draw.content(
-    (x0, y0),
-    group.name,
-    anchor: "north-west",
-    padding: (left: 5pt, right: 10pt, top: 3pt, bottom: 3pt)
-  )
-
-  if group.desc != none {
-    draw.content(
-      (x0 + w, y0),
-      text([\[#group.desc\]], weight: "bold"),
-      anchor: "north-west",
-      padding: 3pt
-    )
-  }
-}
-
 #let render(participants, elements) = context canvas(length: 1pt, {
   let pars-i = get-participants-i(participants)
 
@@ -117,8 +85,6 @@
   }
 
   let y = -Y-SPACE
-  let groups = ()
-
   // Draw sequences
   for elmt in elements {
     if elmt.type == "seq" {
@@ -132,8 +98,12 @@
         )
       )
 
+      draw.line(
+        (x1, y),
+        (x2, y),
+        ..style
+      )
       if elmt.comment != none {
-        y -= measure(box(elmt.comment)).height / 1pt + 6
         draw.content(
           (calc.min(x1, x2), y),
           elmt.comment,
@@ -141,64 +111,6 @@
           padding: 3pt
         )
       }
-
-      draw.line(
-        (x1, y),
-        (x2, y),
-        ..style
-      )
-      y -= Y-SPACE
-    } else if elmt.type == "grp" {
-      let m = measure(
-        box(
-          inset: (left: 5pt, right: 5pt, top: 3pt, bottom: 3pt),
-        )
-      )
-      groups = groups.map(g => {
-        if g.at(1).min-i == elmt.min-i { g.at(2) += 1 }
-        if g.at(1).max-i == elmt.max-i { g.at(3) += 1 }
-        g
-      })
-      groups.push((y, elmt, 0, 0))
-      y -= m.height / 1pt + Y-SPACE
-    
-    } else if elmt.type == "grp-end" {
-      let (start-y, group, start-lvl, end-lvl) = groups.pop()
-      let x0 = x-pos.at(group.min-i) - start-lvl * 10 - 20
-      let x1 = x-pos.at(group.max-i) + end-lvl * 10 + 20
-      draw-group(x0, x1, start-y, y, group)
-
-      y -= Y-SPACE
-
-    } else if elmt.type == "sep" {
-      let x0 = x-pos.first() - 20
-      let x1 = x-pos.last() + 20
-      let m = measure(
-        box(
-          elmt.name,
-          inset: (left: 3pt, right: 3pt, top: 5pt, bottom: 5pt)
-        )
-      )
-      let w = m.width / 1pt
-      let h = m.height / 1pt
-      let cx = (x0 + x1) / 2
-      let xl = cx - w / 2
-      let xr = cx + w / 2
-
-      y -= h / 2
-      draw.line((x0, y), (xl, y))
-      draw.line((xr, y), (x1, y))
-      y -= 3
-      draw.line((x0, y), (xl, y))
-      draw.line((xr, y), (x1, y))
-      draw.content(
-        ((x0 + x1) / 2, y + 1.5),
-        elmt.name,
-        anchor: "center",
-        padding: (5pt, 3pt),
-        frame: "rect"
-      )
-      y -= h / 2
       y -= Y-SPACE
     }
   }

src/utils.typ

@@ -1,27 +0,0 @@
-#let get-participants-i(participants) = {
-  let pars-i = (:)
-  for (i, p) in participants.enumerate() {
-    pars-i.insert(p.name, i)
-  }
-  return pars-i
-}
-
-#let get-group-span(participants, group) = {
-  let min-i = participants.len() - 1
-  let max-i = 0
-  let pars-i = get-participants-i(participants)
-
-  for elmt in group.elmts {
-    if elmt.type == "seq" {
-      let i1 = pars-i.at(elmt.p1)
-      let i2 = pars-i.at(elmt.p2)
-      min-i = calc.min(min-i, i1, i2)
-      max-i = calc.max(max-i, i1, i2)
-    } else if elmt.type == "grp" {
-      let (i0, i1) = get-group-span(participants, elmt)
-      min-i = calc.min(min-i, i0)
-      max-i = calc.max(max-i, i1)
-    }
-  }
-  return (min-i, max-i)
-}