From 4b9a611189047eeb691c362ca8fe206676708bb6 Mon Sep 17 00:00:00 2001
From: dotCooCoo <RobertLeeLW@gmail.com>
Date: Thu, 12 Nov 2026 08:30:44 -0800
Subject: [PATCH] artboard.new: keep sides below 1 pt as given

artboard.new no longer raises a width or height below 1 pt to 1 pt, and artboard.setProps raises only a supplied side, so an edit to a small artboard's name or lock keeps its size.
---
 crates/engine/src/cmd/layer.rs    | 17 +++++++++++++----
 crates/engine/src/tests/newdoc.rs | 14 ++++++++++++++
 2 files changed, 27 insertions(+), 4 deletions(-)

diff --git a/crates/engine/src/cmd/layer.rs b/crates/engine/src/cmd/layer.rs
index 43d9a8e05f..f93cdca7b9 100644
--- a/crates/engine/src/cmd/layer.rs
+++ b/crates/engine/src/cmd/layer.rs
@@ -850,14 +850,23 @@ fn move_node(s: &mut Session, p: &Value) -> Result<Value> {
     ok()
 }
 
-fn rect_from(p: &Value, default: Rect) -> Rect {
+/// The rectangle from `x`, `y`, `width` and `height`, each defaulting to `default`'s. Sides are kept as given.
+fn rect_unclamped(p: &Value, default: Rect) -> Rect {
     let x = f64_or(p, "x", default.x0);
     let y = f64_or(p, "y", default.y0);
-    let w = f64_or(p, "width", default.width()).max(1.0);
-    let h = f64_or(p, "height", default.height()).max(1.0);
+    let w = f64_or(p, "width", default.width());
+    let h = f64_or(p, "height", default.height());
     Rect::new(x, y, x + w, y + h)
 }
 
+/// [`rect_unclamped`] with each supplied side raised to at least 1 pt, as `artboard.setProps` uses it.
+/// A side left out keeps `default`'s, even below 1 pt.
+fn rect_from(p: &Value, default: Rect) -> Rect {
+    let r = rect_unclamped(p, default);
+    let floor = |key: &str, side: f64| if p.get(key).and_then(Value::as_f64).is_some() { side.max(1.0) } else { side };
+    Rect::new(r.x0, r.y0, r.x0 + floor("width", r.width()), r.y0 + floor("height", r.height()))
+}
+
 /// An artboard command's `color` param, its background color: None when absent, `Some(None)` for
 /// null (no color), else `Some(Some(color))`.
 fn artboard_color(p: &Value, cmd: &str) -> Result<Option<Option<vectorcraft_color::Color>>> {
@@ -942,7 +951,7 @@ fn artboard_new(s: &mut Session, p: &Value) -> Result<Value> {
             src + side.offset(src)
         }
         None if p.get("beside").is_some_and(|v| !v.is_null()) => return Err(bad("artboard.new", "`beside` needs `side`")),
-        None => rect_from(p, def),
+        None => rect_unclamped(p, def),
     };
     // A size taken from another artboard (`side`, or width or height left out) keeps to the limit too.
     if !super::newdoc::side_in_range(r.width()) || !super::newdoc::side_in_range(r.height()) {
diff --git a/crates/engine/src/tests/newdoc.rs b/crates/engine/src/tests/newdoc.rs
index 0b573a96f3..d2e5f1b115 100644
--- a/crates/engine/src/tests/newdoc.rs
+++ b/crates/engine/src/tests/newdoc.rs
@@ -291,6 +291,20 @@ fn file_new_and_artboard_new_take_the_same_largest_side() {
         assert!(err.contains(in_meters), "{p}: {err}");
     }
     assert_eq!(boards(&s).len(), 2);
+
+    // A side below 1 pt is kept as given, as file.new keeps it, and a size taken from such an artboard keeps it too.
+    let mut s = new_doc(json!({"width": 0.5, "height": 0.25}));
+    assert_eq!(boards(&s), [Rect::new(0.0, 0.0, 0.5, 0.25)]);
+    s.execute("artboard.new", &json!({"x": 0, "y": 10, "width": 0.5, "height": 0.75})).unwrap();
+    s.execute("artboard.new", &json!({"x": 0, "y": 20})).unwrap();
+    assert_eq!(boards(&s)[1..], [Rect::new(0.0, 10.0, 0.5, 10.75), Rect::new(0.0, 20.0, 0.5, 20.75)]);
+    // artboard.setProps keeps such sides when it changes something else, on a locked artboard too,
+    // and still raises a supplied side to 1 pt.
+    s.execute("artboard.setProps", &json!({"index": 1, "name": "Small"})).unwrap();
+    s.execute("artboard.setProps", &json!({"index": 2, "locked": true})).unwrap();
+    s.execute("artboard.setProps", &json!({"index": 2, "name": "Small locked"})).unwrap();
+    s.execute("artboard.setProps", &json!({"index": 0, "height": 0.5})).unwrap();
+    assert_eq!(boards(&s), [Rect::new(0.0, 0.0, 0.5, 1.0), Rect::new(0.0, 10.0, 0.5, 10.75), Rect::new(0.0, 20.0, 0.5, 20.75)]);
 }
 
 #[test]