From e5ef85590317d950f80522153a4fed715e1a5c23 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fabio=20William=20Concei=C3=A7=C3=A3o?= <messhias@gmail.com>
Date: Mon, 9 Nov 2026 16:29:21 +0000
Subject: [PATCH] G5: size UI Frames so default 9-slice keeps round corners

Button and Bar were shorter than 4x their corner radius, so the default guides cut through the curves on a vertical resize.
---
 crates/engine/src/cmd/symbollib.rs   |  6 ++++--
 crates/engine/src/tests/symbollib.rs | 18 ++++++++++++++----
 2 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/crates/engine/src/cmd/symbollib.rs b/crates/engine/src/cmd/symbollib.rs
index 67b2247d8..1e74eb456 100644
--- a/crates/engine/src/cmd/symbollib.rs
+++ b/crates/engine/src/cmd/symbollib.rs
@@ -199,10 +199,12 @@ fn basic_shapes() -> SymbolLibrary {
 
 /// UI Frames: panel, button and bar HUD chrome with default 9-slice guides (original art).
 fn ui_frames() -> SymbolLibrary {
+    // Heights keep default 9-slice (0.25) past each corner radius so a vertical resize
+    // stretches only the flat middle, not the curves.
     let frames = [
         ("Panel", Rect::new(-48.0, -36.0, 48.0, 36.0), 10.0, "#2b3340", "#8aa0b8"),
-        ("Button", Rect::new(-36.0, -14.0, 36.0, 14.0), 8.0, "#3a6ea5", "#d7e6f5"),
-        ("Bar", Rect::new(-56.0, -10.0, 56.0, 10.0), 10.0, "#1f6b4a", "#b7e0c9"),
+        ("Button", Rect::new(-36.0, -18.0, 36.0, 18.0), 8.0, "#3a6ea5", "#d7e6f5"),
+        ("Bar", Rect::new(-56.0, -24.0, 56.0, 24.0), 10.0, "#1f6b4a", "#b7e0c9"),
     ];
     let mut doc = Document::new(100.0, 100.0);
     for (name, rect, radius, fill_hex, edge_hex) in frames {
diff --git a/crates/engine/src/tests/symbollib.rs b/crates/engine/src/tests/symbollib.rs
index d7c135a6c..559c036c6 100644
--- a/crates/engine/src/tests/symbollib.rs
+++ b/crates/engine/src/tests/symbollib.rs
@@ -105,13 +105,23 @@ fn ui_frames_symbols_carry_default_nine_slice_when_added() {
     let lib = run(&mut s, "symbol.library", json!({"library": "ui-frames"}));
     let names: Vec<&str> = lib["symbols"].as_array().unwrap().iter().map(|x| x["name"].as_str().unwrap()).collect();
     assert_eq!(names, ["Panel", "Button", "Bar"]);
-    let r = run(&mut s, "symbol.addFromLibrary", json!({"library": "ui-frames", "name": "Panel", "place": true, "x": 100.0, "y": 100.0}));
-    assert_eq!(r["added"], json!(["Panel"]));
-    assert!(r["placed"].as_u64().is_some());
+    let mut placed = Vec::new();
+    for (i, name) in names.iter().enumerate() {
+        let r = run(
+            &mut s,
+            "symbol.addFromLibrary",
+            json!({"library": "ui-frames", "name": name, "place": true, "x": 100.0 + 80.0 * i as f64, "y": 100.0}),
+        );
+        assert_eq!(r["added"], json!([name]));
+        placed.push(r["placed"].as_u64().unwrap());
+    }
     let d = doc(&s);
+    for name in &names {
+        assert!(d.symbol_nine_slice(name).is_some(), "{name} should have 9-slice guides");
+    }
     assert_eq!(d.symbol_nine_slice("Panel"), Some(vectorcraft_doc::SymbolNineSlice::default()));
     assert!(matches!(
-        d.node(NodeId(r["placed"].as_u64().unwrap())).map(|n| &n.kind),
+        d.node(NodeId(placed[0])).map(|n| &n.kind),
         Some(NodeKind::SymbolInstance { symbol, .. }) if symbol == "Panel"
     ));
 }