Merge upstream/main into feat/tidy-up-figma-rule

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

crates/engine/src/canvas/tools.rs

@@ -586,8 +586,9 @@ pub struct ToolState {
     /// Vector edit mode's pen: where the last press that started something new (no path being
     /// drawn) was, and the undo depth before it, so a double-click there takes that edit back.
     pub(crate) pen_press: Option<(Point, usize)>,
-    /// The Scale tool's anchor: column and row (0 start, 1 middle, 2 end) of the point of the
-    /// selection box that stays put (`tool.scaleAnchor`).
+    /// The Scale tool's origin: column and row (0 start, 1 middle, 2 end) of the point of the
+    /// selection box that stays put when the Scale field sets a factor (`tool.scaleAnchor`; the
+    /// centre, `(1, 1)`, until set). Handle drags ignore it and pivot on the opposite handle.
     pub scale_anchor: (u8, u8),
     /// The last drag move handled (a held button repeats it every frame).
     pub(crate) last_move: Option<PointerEvent>,

crates/engine/src/canvas/tools/drag.rs

@@ -640,7 +640,7 @@ impl Session {
     /// text included, children by the same factor whatever their constraints.
     fn scale_drag(&mut self, ev: &PointerEvent, r: &ResizeStart, q: Point, guides: Vec<Guide>) -> Result<()> {
         let (frame, w0, h0) = r.frame;
-        let Some((k, pivot)) = scale_factor(r.handle, q, w0, h0, self.tool.scale_anchor, ev.alt) else { return Ok(()) };
+        let Some((k, pivot)) = scale_factor(r.handle, q, w0, h0, ev.alt) else { return Ok(()) };
         let nodes = r.nodes.clone();
         let inv = frame.inverse();
         // A layer's place in the box scales about the pivot; a negative factor turns it over.

crates/engine/src/canvas/tools/handles.rs

@@ -392,30 +392,22 @@ fn opposite(h: Handle) -> Handle {
 }
 
 /// The Scale tool's factor and pivot (in the box's axes) for dragging `handle` of a `w0`×`h0` box
-/// to `q`. The pivot is the anchor point (`anchor`: column, row), or the opposite handle when the
-/// anchor lies on the side being dragged, or the centre (`from_center`). Corners follow the axis
-/// that moved the most; a negative factor flips. None when the box has no size to scale by.
-pub(crate) fn scale_factor(handle: Handle, q: Point, w0: f64, h0: f64, anchor: (u8, u8), from_center: bool) -> Option<(f64, Point)> {
+/// to `q`. The pivot is the opposite handle's point, or the centre (`from_center`); the origin grid
+/// never decides it (measured in Figma's web app, 2026-11-09). Corners follow the axis that moved
+/// the most; a negative factor flips. None when the box has no size to scale by.
+pub(crate) fn scale_factor(handle: Handle, q: Point, w0: f64, h0: f64, from_center: bool) -> Option<(f64, Point)> {
     const EPS: f64 = 1e-9;
     if !(q.x.is_finite() && q.y.is_finite() && w0.is_finite() && h0.is_finite()) || matches!(handle, Handle::Rotate(_)) {
         return None;
     }
     let h = handle_point(handle, w0, h0);
-    let anchor_pt = anchor_in_box(anchor, w0, h0);
     // The axes the handle moves along.
     let (ax_x, ax_y) = match handle {
         Handle::Edge(0) | Handle::Edge(2) => (false, true),
         Handle::Edge(_) => (true, false),
         _ => (true, true),
     };
-    let on_side = (ax_x && (anchor_pt.x - h.x).abs() < EPS) || (ax_y && (anchor_pt.y - h.y).abs() < EPS);
-    let pivot = if from_center {
-        Point::new(w0 / 2.0, h0 / 2.0)
-    } else if on_side {
-        handle_point(opposite(handle), w0, h0)
-    } else {
-        anchor_pt
-    };
+    let pivot = if from_center { Point::new(w0 / 2.0, h0 / 2.0) } else { handle_point(opposite(handle), w0, h0) };
     let ratio = |on: bool, to: f64, from: f64, p: f64| (on && (from - p).abs() > EPS).then(|| (to - p) / (from - p));
     let kx = ratio(ax_x, q.x, h.x, pivot.x);
     let ky = ratio(ax_y, q.y, h.y, pivot.y);

crates/engine/src/cmd/view.rs

@@ -650,7 +650,7 @@ pub fn specs() -> Vec<CommandSpec> {
         spec!(
             "tool.scaleAnchor",
             "Scale anchor",
-            "{anchor?: tl|t|tr|l|c|r|bl|b|br} (the point of the selection that stays put when the Scale tool scales; omit to read it)",
+            "{anchor?: tl|t|tr|l|c|r|bl|b|br} (the origin of the Scale tool's factor field: the point of the selection that stays put; defaults to c, handle drags pivot on the opposite handle whatever it is; omit to read it)",
             false,
             |s, p| {
                 if let Some(a) = string(p, "anchor") {

crates/engine/src/scale_tool_tests.rs

@@ -57,29 +57,54 @@ fn anchors_round_trip() {
 }
 
 #[test]
-fn the_pivot_is_the_anchor_unless_it_is_on_the_dragged_side() {
+fn the_pivot_is_the_opposite_handle_or_the_centre_with_alt() {
     let (w, h) = (100.0, 50.0);
-    let tl = (0, 0);
-    // Bottom-right corner from the top-left anchor: classic, by the axis that moved the most.
-    assert_eq!(scale_factor(Handle::Corner(2), Point::new(200.0, 60.0), w, h, tl, false), Some((2.0, Point::new(0.0, 0.0))));
-    // Top-right corner: the anchor is on its top side, so the opposite corner stays put.
-    assert_eq!(scale_factor(Handle::Corner(1), Point::new(150.0, -25.0), w, h, tl, false), Some((1.5, Point::new(0.0, 50.0))));
-    // Right edge: from the anchor; left edge: the anchor is on it, so from the right edge.
-    assert_eq!(scale_factor(Handle::Edge(1), Point::new(50.0, 999.0), w, h, tl, false), Some((0.5, Point::new(0.0, 0.0))));
-    assert_eq!(scale_factor(Handle::Edge(3), Point::new(-100.0, 0.0), w, h, tl, false), Some((2.0, Point::new(100.0, 25.0))));
-    // A centre anchor, or Alt, scales about the centre.
-    assert_eq!(scale_factor(Handle::Corner(2), Point::new(150.0, 75.0), w, h, (1, 1), false), Some((2.0, Point::new(50.0, 25.0))));
-    assert_eq!(scale_factor(Handle::Edge(2), Point::new(0.0, 75.0), w, h, tl, true), Some((2.0, Point::new(50.0, 25.0))));
+    // Bottom-right corner: the top-left corner stays put, by the axis that moved the most.
+    assert_eq!(scale_factor(Handle::Corner(2), Point::new(200.0, 60.0), w, h, false), Some((2.0, Point::new(0.0, 0.0))));
+    // Top-right corner: the bottom-left corner stays put.
+    assert_eq!(scale_factor(Handle::Corner(1), Point::new(150.0, -25.0), w, h, false), Some((1.5, Point::new(0.0, 50.0))));
+    // Right edge: the left edge's middle; left edge: the right edge's middle.
+    assert_eq!(scale_factor(Handle::Edge(1), Point::new(50.0, 999.0), w, h, false), Some((0.5, Point::new(0.0, 25.0))));
+    assert_eq!(scale_factor(Handle::Edge(3), Point::new(-100.0, 0.0), w, h, false), Some((2.0, Point::new(100.0, 25.0))));
+    // Alt scales about the centre.
+    assert_eq!(scale_factor(Handle::Edge(2), Point::new(0.0, 75.0), w, h, true), Some((2.0, Point::new(50.0, 25.0))));
     // Past the pivot flips; it never collapses to nothing.
-    assert_eq!(scale_factor(Handle::Corner(2), Point::new(-100.0, -50.0), w, h, tl, false).map(|k| k.0), Some(-1.0));
-    assert_eq!(scale_factor(Handle::Corner(2), Point::new(0.0, 0.0), w, h, tl, false).map(|k| k.0), Some(0.01));
+    assert_eq!(scale_factor(Handle::Corner(2), Point::new(-100.0, -50.0), w, h, false).map(|k| k.0), Some(-1.0));
+    assert_eq!(scale_factor(Handle::Corner(2), Point::new(0.0, 0.0), w, h, false).map(|k| k.0), Some(0.01));
     // Lines (no height) scale along their length.
-    assert_eq!(scale_factor(Handle::Corner(1), Point::new(300.0, 7.0), 100.0, 0.0, tl, false).map(|k| k.0), Some(3.0));
+    assert_eq!(scale_factor(Handle::Corner(1), Point::new(300.0, 7.0), 100.0, 0.0, false).map(|k| k.0), Some(3.0));
     for bad in [f64::NAN, f64::INFINITY] {
-        assert_eq!(scale_factor(Handle::Corner(2), Point::new(bad, 0.0), w, h, tl, false), None);
+        assert_eq!(scale_factor(Handle::Corner(2), Point::new(bad, 0.0), w, h, false), None);
     }
-    assert_eq!(scale_factor(Handle::Rotate(0), Point::new(1.0, 1.0), w, h, tl, false), None);
-    assert_eq!(scale_factor(Handle::Corner(2), Point::new(5.0, 5.0), 0.0, 0.0, tl, false), None);
+    assert_eq!(scale_factor(Handle::Rotate(0), Point::new(1.0, 1.0), w, h, false), None);
+    assert_eq!(scale_factor(Handle::Corner(2), Point::new(5.0, 5.0), 0.0, 0.0, false), None);
+}
+
+/// Measured in Figma's web app, 2026-11-09: a drag ignores the origin grid and pivots on the
+/// opposite handle (a 100 x 100 layer at 9000, 5000: the bottom-right corner keeps the top left;
+/// the right edge keeps the left edge's middle and scales both ways).
+#[test]
+fn a_scale_handle_drag_pivots_on_the_opposite_handle_whatever_the_origin() {
+    for origin in ["c", "tl"] {
+        let mut s = Session::new();
+        let r = rect(&mut s, 9000.0, 5000.0, 100.0, 100.0);
+        ex(&mut s, "select.set", json!({"ids": [r]}));
+        ex(&mut s, "tool.scale", json!({}));
+        ex(&mut s, "tool.scaleAnchor", json!({"anchor": origin}));
+        drag(&mut s, (9100.0, 5100.0), (9144.0, 5144.0), false);
+        assert_rect(bounds(&s, r), [9000.0, 5000.0, 9144.0, 5144.0]);
+        s.undo().unwrap();
+        // The right edge's middle: the left edge's middle stays, the layer scales evenly.
+        drag(&mut s, (9100.0, 5050.0), (9150.0, 5050.0), false);
+        assert_rect(bounds(&s, r), [9000.0, 4975.0, 9150.0, 5125.0]);
+    }
+}
+
+#[test]
+fn the_scale_origin_starts_at_the_centre() {
+    let mut s = Session::new();
+    assert_eq!(ex(&mut s, "tool.scaleAnchor", json!({}))["anchor"], json!("c"));
+    assert_eq!(s.tool.scale_anchor, (1, 1));
 }
 
 #[test]
@@ -118,7 +143,7 @@ fn the_live_readout_shows_the_factor_and_pivot() {
 }
 
 #[test]
-fn the_anchor_and_alt_choose_what_stays_put() {
+fn the_anchor_is_read_back_and_alt_scales_from_the_centre() {
     let mut s = Session::new();
     let r = rect(&mut s, 0.0, 0.0, 100.0, 50.0);
     ex(&mut s, "select.set", json!({"ids": [r]}));
@@ -126,12 +151,13 @@ fn the_anchor_and_alt_choose_what_stays_put() {
     assert_eq!(ex(&mut s, "tool.scaleAnchor", json!({"anchor": "c"}))["anchor"], json!("c"));
     assert_eq!(ex(&mut s, "tool.scaleAnchor", json!({}))["anchor"], json!("c"), "reads it back");
     assert!(s.execute("tool.scaleAnchor", &json!({"anchor": "nowhere"})).is_err());
+    // A drag pivots on the opposite corner whatever the anchor.
     drag(&mut s, (100.0, 50.0), (150.0, 75.0), false);
-    assert_rect(bounds(&s, r), [-50.0, -25.0, 150.0, 75.0]);
+    assert_rect(bounds(&s, r), [0.0, 0.0, 150.0, 75.0]);
     // Alt scales from the centre whatever the anchor.
     ex(&mut s, "tool.scaleAnchor", json!({"anchor": "tl"}));
     drag(&mut s, (150.0, 75.0), (125.0, 62.5), true);
-    assert_rect(bounds(&s, r), [-25.0, -12.5, 125.0, 62.5]);
+    assert_rect(bounds(&s, r), [25.0, 12.5, 125.0, 62.5]);
 }
 
 #[test]

crates/engine/src/session/new.rs

@@ -17,7 +17,7 @@ impl Session {
             default_props: Default::default(),
             prefs: Prefs::default(),
             prefs_unsaved: false,
-            tool: tools::ToolState::default(),
+            tool: tools::ToolState { scale_anchor: (1, 1), ..tools::ToolState::default() },
             ui_requests: Vec::new(),
             ui_dark: None,
             journal: Vec::new(),

crates/ui-egui/src/field_tests.rs

@@ -941,7 +941,7 @@ fn enter_in_another_field_after_tab_keeps_the_scale_tool() {
     assert_eq!(u.app.session.tool.tool, figcraft_engine::ToolId::Scale);
 }
 
-/// K, 2, Enter: 100 x 100 becomes 200 x 200 about the panel's origin, the tool is Move, one undo step.
+/// K, 2, Enter: 100 x 100 becomes 200 x 200 about the panel's origin (the centre), the tool is Move, one undo step.
 #[test]
 fn k_two_enter_scales_the_selection_by_two() {
     let (mut u, r) = scale_setup();
@@ -951,8 +951,8 @@ fn k_two_enter_scales_the_selection_by_two() {
     u.frame(vec![Event::Text("2".to_string())]);
     key(&mut u, Key::Enter, Modifiers::NONE);
     u.frame(vec![]);
-    // About the panel's origin, FigCraft's top-left default (Figma's grid starts at the centre).
-    assert_eq!(geom(&u, r), (0.0, 0.0, 200.0, 200.0));
+    // About the panel's origin, which starts at the centre as Figma's grid does.
+    assert_eq!(geom(&u, r), (-50.0, -50.0, 200.0, 200.0));
     assert!(!scale_field_focused(&u), "the field let go of the keyboard");
     assert_eq!(u.app.session.tool.tool, figcraft_engine::ToolId::Move);
     assert_eq!(u.app.session.ds().unwrap().selection, vec![r]);
@@ -971,7 +971,8 @@ fn the_scale_field_takes_2x_and_1_5() {
         u.frame(vec![Event::Text(text.to_string())]);
         key(&mut u, Key::Enter, Modifiers::NONE);
         u.frame(vec![]);
-        assert_eq!(geom(&u, r), (0.0, 0.0, size, size), "{text}");
+        let at = 50.0 - size / 2.0;
+        assert_eq!(geom(&u, r), (at, at, size, size), "{text}");
     }
 }
 

docs/ui-parity.md

@@ -1,6 +1,6 @@
 # UI and interaction parity
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-11-10 · **Change:** minor (Tidy up keeps the order and sizes and evens the gaps, as measured in Figma's web app on 2026-11-12, rounds the gap half up, tidies overlapping rows and packs a grid along its longer axis, and is greyed out for fewer than three layers, a diagonal and an irregular layout (M8); M8: a selected polygon or star has a Count handle on the canvas, on its first point clockwise from the top; Zoom to selection leaves a 40 pt margin and clears the bottom toolbar, measured in Figma's web app; M1: Paste over selection puts the pasted layers just above the selected layer; drag modifiers compared in Figma's web app (2026-11-08): Shift locks a move to the dominant axis, Alt copies, Shift keeps a resize's ratio, Alt keeps its centre, all read afresh on every move, and FigCraft matches (Ctrl/Cmd not measurable); a mirror mode (angle, or angle and length) on a sharp point turns it smooth, as in Figma (#2110); M8: Tab while renaming the last layer wraps to the first row, measured in Figma's web app on 2026-11-12; the text caret takes the text's solid fill colour (#2156); the Rotation field shows and sets the rotation on the page, in frames and groups, through node.set absoluteRotation (#2196); the eyedropper picks a magnified image's pixel under the pointer, not a blend with its neighbours (#2189); Selection colors shows from one distinct colour when a selected layer has children, and from two otherwise, measured in Figma's web app on 2026-11-09 on a frame, a group and plain rectangles; the crosshair of the shape and Text tools is drawn dark with a white edge, so it shows on a white frame whatever the system's pointer style (#2198); a boolean group takes a corner radius (and smoothing) that rounds every sharp corner of its result (#2222); the Point section's X and Y in vector edit mode show Mixed and set every selected point of the layer being edited, as in Figma; Preferences ▸ Invert zoom direction reverses wheel zoom, pinch unchanged (#2145); Shift while rotating lands on absolute multiples of 15°, measured in Figma; Flatten bakes a vector's point corner radius into its path (#2195); a click on a fill, stroke or effect row's grip or background highlights it, Cmd/Ctrl+C copies that paint or effect and Cmd/Ctrl+V pastes it onto the selected layers, as the help center's Copy and paste properties between layers says (#1494); wrap style per paragraph and in text styles (#1827); the Annotation tool (Shift+T, `tool.annotation {id?}`): with a layer selected (or an `id`) it asks the UI for that layer's note at once, and in the tool a press on a layer selects it and asks for its note, a press on empty canvas does nothing; the marquee follows Figma's measured rules: a partly covered frame or section gives the layers in it the marquee touches, a rotated shape is touched by its outline, a drag from inside a frame selects that frame only when the marquee also takes another top-level frame (then whole) (`marquee_behaviour_tests`); copy, cut and paste in vector edit mode act on the selected points and segments (#1875); M8, #2146: K focuses the Scale tool's factor field with its text selected, so K, 2, Enter scales the selection by two about the panel's origin (FigCraft's starts at the top left; Figma's grid starts at the centre, left for a follow-up because the origin also sets where a handle drag pivots, which is not measured) in one undo step, after which the tool returns to Move with the selection kept; Escape in the field closes it with the tool back on Move and nothing changed (measured in Figma's web app, 2026-11-09; `pressing_k_focuses_the_scale_field_with_its_text_selected`, `k_two_enter_scales_the_selection_by_two`, `escape_in_the_scale_field_closes_it_and_changes_nothing`); the main menu and its submenus stay inside the window, moving up to fit and scrolling when taller (#2217); locked layers ignore the arrow keys and a locked parent's children can't be locked on their own (#1560); the left rail's and tab strip's icons are larger, 20 pt (#553); pick select: Tab while the keyboard selection box shows (or the chord again) puts a pink outline on a layer and the keys walk the layer tree from it, as Accessibility at Figma says (#1836); scrubbing a field faster or slower by the pointer's height, with a notice of the speed, as the help center's Scrub fields says (#1837); component rows in the Layers panel at AA contrast in the theme's component tint, with the rows inside a selected component in a tone of its row (#1903); Cmd/Ctrl-click on a padding field sets all four sides with the value typed, a documented auto layout shortcut; a fill per region of a vector: with regions selected in edit mode, the Fill section and the fill commands edit those regions' own fills, as Edit vector layers says (#1875); the Fill section of a text whose characters were coloured differently while editing shows mixed content, characters that all share fills the layer doesn'tLine truncated
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-11-10 · **Change:** minor (Tidy up keeps the order and sizes and evens the gaps, as measured in Figma's web app on 2026-11-12, rounds the gap half up, tidies overlapping rows and packs a grid along its longer axis, and is greyed out for fewer than three layers, a diagonal and an irregular layout (M8); M8: Scale tool handle drags pivot on the opposite handle whatever the origin, and the origin starts at the centre (measured in Figma's web app, 2026-11-09); M8: a selected polygon or star has a Count handle on the canvas, on its first point clockwise from the top; Zoom to selection leaves a 40 pt margin and clears the bottom toolbar, measured in Figma's web app; M1: Paste over selection puts the pasted layers just above the selected layer; drag modifiers compared in Figma's web app (2026-11-08): Shift locks a move to the dominant axis, Alt copies, Shift keeps a resize's ratio, Alt keeps its centre, all read afresh on every move, and FigCraft matches (Ctrl/Cmd not measurable); a mirror mode (angle, or angle and length) on a sharp point turns it smooth, as in Figma (#2110); M8: Tab while renaming the last layer wraps to the first row, measured in Figma's web app on 2026-11-12; the text caret takes the text's solid fill colour (#2156); the Rotation field shows and sets the rotation on the page, in frames and groups, through node.set absoluteRotation (#2196); the eyedropper picks a magnified image's pixel under the pointer, not a blend with its neighbours (#2189); Selection colors shows from one distinct colour when a selected layer has children, and from two otherwise, measured in Figma's web app on 2026-11-09 on a frame, a group and plain rectangles; the crosshair of the shape and Text tools is drawn dark with a white edge, so it shows on a white frame whatever the system's pointer style (#2198); a boolean group takes a corner radius (and smoothing) that rounds every sharp corner of its result (#2222); the Point section's X and Y in vector edit mode show Mixed and set every selected point of the layer being edited, as in Figma; Preferences ▸ Invert zoom direction reverses wheel zoom, pinch unchanged (#2145); Shift while rotating lands on absolute multiples of 15°, measured in Figma; Flatten bakes a vector's point corner radius into its path (#2195); a click on a fill, stroke or effect row's grip or background highlights it, Cmd/Ctrl+C copies that paint or effect and Cmd/Ctrl+V pastes it onto the selected layers, as the help center's Copy and paste properties between layers says (#1494); wrap style per paragraph and in text styles (#1827); the Annotation tool (Shift+T, `tool.annotation {id?}`): with a layer selected (or an `id`) it asks the UI for that layer's note at once, and in the tool a press on a layer selects it and asks for its note, a press on empty canvas does nothing; the marquee follows Figma's measured rules: a partly covered frame or section gives the layers in it the marquee touches, a rotated shape is touched by its outline, a drag from inside a frame selects that frame only when the marquee also takes another top-level frame (then whole) (`marquee_behaviour_tests`); copy, cut and paste in vector edit mode act on the selected points and segments (#1875); M8, #2146: K focuses the Scale tool's factor field with its text selected, so K, 2, Enter scales the selection by two about the panel's origin (FigCraft's starts at the top left; Figma's grid starts at the centre, left for a follow-up because the origin also sets where a handle drag pivots, which is not measured) in one undo step, after which the tool returns to Move with the selection kept; Escape in the field closes it with the tool back on Move and nothing changed (measured in Figma's web app, 2026-11-09; `pressing_k_focuses_the_scale_field_with_its_text_selected`, `k_two_enter_scales_the_selection_by_two`, `escape_in_the_scale_field_closes_it_and_changes_nothing`); the main menu and its submenus stay inside the window, moving up to fit and scrolling when taller (#2217); locked layers ignore the arrow keys and a locked parent's children can't be locked on their own (#1560); the left rail's and tab strip's icons are larger, 20 pt (#553); pick select: Tab while the keyboard selection box shows (or the chord again) puts a pink outline on a layer and the keys walk the layer tree from it, as Accessibility at Figma says (#1836); scrubbing a field faster or slower by the pointer's height, with a notice of the speed, as the help center's Scrub fields says (#1837); component rows in the Layers panel at AA contrast in the theme's component tint, with the rows inside a selected component in a tone of its row (#1903); Cmd/Ctrl-click on a padding field sets all four sides with the value typed, a documented auto layout shortcut; a fill per region of a vector: with regions selected in edit mode, the Fill section and the fill commands edit those regions' own fills, as Edit vector layers says (#1875Line truncated
 
 Fine canvas control is what Figma users feel first: handles, snapping, nudging, modifier keys,
 drag behaviour, numeric precision. This checklist covers the tools, gestures and panels. Status:
@@ -72,7 +72,7 @@ interaction feel only partly compared: the interactions measured so far, case by
 | Enter with a shape or frame tool chosen | done | places what a click makes (100×100, lines 100 long, sections 400×300) in the middle of the view, selected (`tool.place`); from the toolbar, Enter on the chosen tool. With nothing selected, the arrows first show a crosshair in the middle of the view and then move it by the nudge amounts (`tool.crosshair`; Shift the large one), and Enter places there; Escape or a tool change takes it away ("Use the arrow keys to activate the crosshair cursor. It will appear in the middle of the viewport indicating where the new object will be placed", Accessibility at Figma; #1839) |
 | Alt-drag duplicate | done | the copy snaps to the layer it came from too (edges, centres, equal spacing); Duplicate (Cmd+D) then repeats the copy's offset, also after a Duplicate whose copy was moved, as long as the copies stay selected (the documentation doesn't say; pinned from community answers); Alt going down or up mid-drag turns the move into a copy or back to the original, with Shift a copy kept to one axis (`alt_pressed_during_a_drag_turns_the_move_into_a_copy`, `alt_shift_drag_on_a_selected_layer_duplicates_it`; measured in Figma's web app, 2026-11-08) |
 | Drag threshold; double-click into groups and text | done | a press moves or resizes only once the pointer has travelled 3 px on screen, so a click or double-click made with an unsteady hand drags nothing; a double-click goes one level into a group and the next one edits the text under it, wherever on the text it lands, with all of it selected (a double-click in the text being edited selects the word) (`double_click_tests`); Enter on a selected text does the same (all of it selected, typing replaces it) and Escape leaves editing with the layer still selected (`text_enter_tests`) |
-| Scale tool (K): handles about an anchor, live factor, panel | done | Pressing K opens the Scale section with its factor field focused and its text selected; typing 2 (or 2x, 1.5) then Enter scales the selection by it about the panel's origin (FigCraft's starts at the top left; Figma's grid starts at the centre, left for a follow-up because the origin also sets where a handle drag pivots, which is not measured), as one undo step, then closes the section and returns to Move with the selection kept; Escape in the field closes it, back to Move, nothing changed. Measured in Figma's web app, 2026-11-09. Tests: `pressing_k_focuses_the_scale_field_with_its_text_selected`, `k_two_enter_scales_the_selection_by_two`, `escape_in_the_scale_field_closes_it_and_changes_nothing`. |
+| Scale tool (K): handles about the opposite handle, live factor, panel | done | Dragging a handle ignores the origin grid and pivots on the opposite handle's point (the opposite corner, or the opposite edge's middle for an edge, which scales both ways), with Alt on the centre; the origin grid (`tool.scaleAnchor`) starts at the centre and sets only what the Scale field and the W and H fields keep fixed (W and H with a non-centre origin are unmeasured). Measured in Figma's web app, 2026-11-09. Tests: `a_scale_handle_drag_pivots_on_the_opposite_handle_whatever_the_origin`, `the_scale_origin_starts_at_the_centre`. Pressing K opens the Scale section with its factor field focused and its text selected; typing 2 (or 2x, 1.5) then Enter scales the selection by it about the panel's origin, which starts at the centre, as one undo step, then closes the section and returns to Move with the selection kept; Escape in the field closes it, back to Move, nothing changed. Measured in Figma's web app, 2026-11-09. Tests: `pressing_k_focuses_the_scale_field_with_its_text_selected`, `k_two_enter_scales_the_selection_by_two`, `escape_in_the_scale_field_closes_it_and_changes_nothing`. |
 | Nudge 1 / Shift 10 (preference), Cmd+arrows resize | done | arrows reorder auto layout children |
 | Smart guides: edges, centres, equal spacing (between two layers or continuing a row's gap, labelled), spacing labels, parent, layout grid, ruler guides | done | red, `snap.rs`; a guide dragged out of a ruler or moved snaps to layer edges and centres too (Snap to Objects; Cmd/Ctrl suspends), on its own axis only; page guides see the page's top-level layers, frame guides the frame's box, layout grids and every layer in it, along a rotated frame's own axes; the object snap threshold is 4.5 screen pixels, measured against Figma (snapped at a gap of 4.4 screen px, not at 4.6, at 100% and 200% zoom, 2026-11-08; the equal-spacing snap shares it), but the ruler-guide and rotation-origin thresholds (5 px), the red guide's look and snapping with Snap to pixel grid off are not yet compared with Figma's (`guide_snap_tests`, `transform_behaviour_tests`) |
 | Ctrl to suspend snapping while dragging (macOS) | done | Control on macOS (Cmd keeps working), Ctrl elsewhere; moving, resizing and drawing |
@@ -333,5 +333,6 @@ This audit records candidates for subsequent fixes; their behaviour is unchanged
 | 2026-10-11 | minor | Outline mode done: outlines for the selection (the selected layers draw as outlines, the rest normally) and mask outlines |
 | 2026-10-11 | minor | Design panel arc fields, live boolean editing (operands on the canvas, live results, per-operand operations), shape builder on strokes and open paths, one-sided widths (Alt-drag a width handle) |
 | 2026-11-09 | patch | M8, #2146: K focuses the Scale tool's factor field with its text selected, so K, 2, Enter scales the selection by two about the panel's origin (FigCraft's starts at the top left; Figma's grid starts at the centre, left for a follow-up because the origin also sets where a handle drag pivots, which is not measured) in one undo step, after which the tool returns to Move with the selection kept; Escape in the field closes it with the tool back on Move and nothing changed (measured in Figma's web app, 2026-11-09; `pressing_k_focuses_the_scale_field_with_its_text_selected`, `k_two_enter_scales_the_selection_by_two`, `escape_in_the_scale_field_closes_it_and_changes_nothing`) |
+| 2026-11-12 | patch | M8: Scale tool handle drags pivot on the opposite handle whatever the origin, and the origin starts at the centre, so K, 2, Enter scales about the centre (measured in Figma's web app, 2026-11-09; `a_scale_handle_drag_pivots_on_the_opposite_handle_whatever_the_origin`, `the_scale_origin_starts_at_the_centre`) |
 | 2026-11-12 | minor | M8: a selected polygon or star has a Count handle on the canvas (hover label Count N), measured in Figma's web app on 2026-11-12: it sits on the first vertex clockwise from the top (a star's first outer point, not inset), and a drag sets the count to round(360 / the pointer's clockwise angle from the top point about the centre), so 90 degrees gives 4, 72 gives 5 and 45 gives 8, with the step shrinking as the count grows; one drag is one undo step. The count is clamped to 3 to 60 (the help center's range for a star; a polygon's maximum was not read). Tests: `a_polygon_has_a_count_handle_on_its_first_vertex_clockwise_from_the_top`, `dragging_the_count_handle_sets_the_count_by_the_angle_about_the_centre`, `a_count_drag_is_one_undo_step` |
 | 2026-10-10 | major | Created from the ROADMAP's look-and-feel and interaction items, the keymap and the canvas code |