Docs: drag modifiers measured in Figma

Move and resize modifiers were compared in Figma web on 2026-11-08: Shift locks a move to the dominant axis, Alt copies, Shift keeps the ratio and an edge scales about the opposite edge middle, Alt keeps the centre, Shift+Alt does both, and a modifier changed mid-drag is read fresh. FigCraft matches; Ctrl/Cmd was not measurable. The three ui-parity rows, a revision row and the status line record it, and target-app-parity no longer says modifiers are uncompared.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Model-Effort: Opus 5.5 drove; Opus 5.5 briefed; Sonnet 5.5 wrote at medium

docs/target-app-parity.md

@@ -126,7 +126,7 @@ Breadth: does it exist. Ready: depth, correctness and fidelity for real projects
 | Dimension | Weight | Ready | Hours | Evidence | Doc |
 |---|---|---|---|---|---|
 | Features (depth) | 35 | 63% | 28–67 (areas 1–13, 15, 16, 20) | The table above; core editor ~72% | this file |
-| UI/UX fidelity | 15 | 58% | 40–60 | Look & feel compared side by side with UI3 (~65% by the builders); tool-by-tool interaction (modifiers while dragging, hover states, popovers) not yet compared (a cursor for every tool and modifier, number fields and panel widths built from the documentation, not compared); accessibility names and keyboard navigation landed | [ui-parity](ui-parity.md) |
+| UI/UX fidelity | 15 | 58% | 40–60 | Look & feel compared side by side with UI3 (~65% by the builders); tool-by-tool interaction not yet compared (move and resize modifiers compared in Figma's web app on 2026-11-08 and matching, Ctrl/Cmd not measured; hover states and popovers not compared) (a cursor for every tool and modifier, number fields and panel widths built from the documentation, not compared); accessibility names and keyboard navigation landed | [ui-parity](ui-parity.md) |
 | File formats | 12 | 61% | 5–10 | `.sketch` read (Sketch 48 and newer, best effort; 2026-10-21): live symbols, shared styles, Sketch 2025 frames and stacks, checked on three real files against Sketch's own renders (0.8–2% of pixels differ on average); `.fig` read, best effort, with editable vector networks and (2026-10-17) more fidelity, budgets for large files and an import report (tested on generated fixtures, not real files); layers copied from another design app paste the same way (tested only with clipboard HTML made from our own export), `.fig` write experimental (round trips through our own importer; written files open and draw in other software); REST JSON import, SVG in/out, PNG/JPG/WebP/PDF export solid, with a behaviour suite from the documentation | [file-format-parity](file-format-parity.md) |
 | Collaboration | 10 | 13% | 52–104 | Local comments, version history and branches with review and merge; the multiplayer core (sync model, server ordering, client reconciliation, convergence tests) landed in #103, and live sessions (preview) co-edit a file hosted by a desktop app or kept on a self-hosted `figcraft-server` with edit and view links, joined from the app or the browser, with cursor chat and spotlight (`docs/collab-protocol.md`) | [collaboration-parity](collaboration-parity.md) |
 | Stability | 8 | 55% | 20–40 | Never-crash lints, command guard with rollback, recovery copies, 963 tests incl. junk-parameter sweeps and a seeded retained-render walk; but two days old, one release (v0.2.0), no field reports, QA mostly on macOS | [gaps](gaps.md) |
@@ -196,7 +196,7 @@ and is left out as an area, but its effect on working with Figma users is counte
 
 | Discount | Factor | Evidence |
 |---|---|---|
-| Interaction fidelity | ×0.90 | UI3 look compared side by side (~65% by the builders); no tool-by-tool comparison of cursors, modifier keys while dragging, snapping thresholds or popovers yet; Ctrl to suspend snapping on macOS missing ([ui-parity](ui-parity.md)) |
+| Interaction fidelity | ×0.90 | UI3 look compared side by side (~65% by the builders); no tool-by-tool comparison of cursors, snapping thresholds or popovers yet (move and resize modifiers were compared in Figma's web app on 2026-11-08 and match, Ctrl/Cmd not measured); Ctrl to suspend snapping on macOS missing ([ui-parity](ui-parity.md)) |
 | Stability on real machines | ×0.90 | Never-crash lints, command guard with rollback, recovery copies and 963 tests, but no field record at all: the repository is private, v0.2.0 has had no outside users or issue reports, CI tests run on Linux only and hands-on QA is on macOS. Harsher than VectorCraft's ×0.92 because there is no outside evidence either way |
 | File exchange with Figma users | ×0.85 | A Figma designer's work lives in shared Figma files. FigCraft opens a `.fig` (best effort, not yet checked on real files) and writes an experimental one (written files open and draw in other software; effects, images and prototypes unchecked there); incoming work can come through the REST API JSON (one way, needs an access token), outgoing only as SVG, PDF, PNG or code. Teammates, reviewers and developers would all need FigCraft ([file-format-parity](file-format-parity.md), [collaboration-parity](collaboration-parity.md)) |
 

docs/ui-parity.md

@@ -1,6 +1,6 @@
 # UI and interaction parity
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-11-10 · **Change:** minor (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't have show those, and a layer-level fill edit reaches every character (#1856); a number field scrubs when dragged with Alt held, as the help center's scrub section says, not only by its label; reuse visible layer selection roots (M8); ; with a shape or frame tool chosen and nothing selected, the arrows show a placement crosshair in the middle of the view and move it, and Enter places there, as Accessibility at Figma says (#1839); text direction per paragraph: Text ▸ Text direction forces a paragraph left to right or right to left, as Add right-to-left text says (#1830), with `text.direction`, `node.set textDirection`, the Type settings control once a right-to-left script is in the text, inspect, the CSS `direction` and the `.fig` lines' `sourceDirectionality`; the boolean operation menu in the Design panel leads each entry with an original icon drawn in code, a filled preview of the result (#2003); a press on the open gradient's handles or stops on the canvas keeps the colour picker open through the drag, as its own control (#1852); a click with the Bend tool on a sharp point curves it, its handles along the line between its neighbours, as Edit vector layers says (#1875); wrap style: Auto, Balance and Pretty on a text layer decide where its lines break, as Explore text properties says (#1827), with the Type settings control, `text.wrapStyle`, `node.set wrapStyle`, inspect and the CSS `text-wrap`; Backspace or Delete at the start of a list item keeps the item's indLine truncated
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-11-12 · **Change:** minor (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); 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't have show those, and a layer-level fill edit reaches every character (#1856); a number field scrubs when dragged with Alt held, as the help center's scrub section says, not only by its label; reuse visible layer selection roots (M8); ; with a shape or frame tool chosen and nothing selected, the arrows show a placement crosshair in the middle of the view and move it, and Enter places there, as Accessibility at Figma says (#1839); text direction per paragraph: Text ▸ Text direction forces a paragraph left to right or right to left, as Add right-to-left text says (#1830), with `text.direction`, `node.set textDirection`, the Type settings control once a right-to-left script is in the text, inspect, the CSS `direction` and the `.fig` lines' `sourceDirectionality`; the boolean operation menu in the Design panel leads each entry with an original icon drawn in code, a filled preview of the result (#2003); a press on the open gradient's handles or stops on the canvas keeps the colour picker open through the drag, as its own control (#1852); a click with the Bend tool on a sharp point curves it, its handles along the line between its neighbours, as Edit vector layers says (#1875); wrap style: Auto, Balance and Pretty on a text layer decLine 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:
@@ -59,17 +59,17 @@ interaction feel not yet compared.
 
 | Item | Status | Notes |
 |---|---|---|
-| Click, Shift-click, marquee, Shift-marquee toggle | done | Shift-drag on a selected layer moves the selection, kept to one axis (#498); a marquee selects the top-level layers it touches, by the box and a rotated shape by its outline (rectangle and ellipse measured, the other shapes by the same code); a partly covered top-level frame or section gives the layers in it the marquee touches, an enclosed one is selected itself, an empty frame on touch; a drag from a frame's background selects that frame only when the marquee also takes another top-level frame (then whole), and also takes what it touches outside it; selecting a frame whole keeps the marquee at the top level (a partly covered frame then comes whole too); locked and hidden layers are skipped (`marquee_behaviour_tests`, `selection_behaviour_tests`; measured in Figma's web app, 2026-11-11; Shift and Cmd/Ctrl marquees not measured) (a locked layer selected from the panel ignores the arrow keys and the nudge commands; its properties still edit; measured in Figma's web app, 2026-11-10) |
+| Click, Shift-click, marquee, Shift-marquee toggle | done | Shift-drag on a selected layer moves the selection, kept to the dominant axis with no 45° snap (#498; `shift_drag_moves_the_selection`; measured in Figma's web app, 2026-11-08); a marquee selects the top-level layers it touches, by the box and a rotated shape by its outline (rectangle and ellipse measured, the other shapes by the same code); a partly covered top-level frame or section gives the layers in it the marquee touches, an enclosed one is selected itself, an empty frame on touch; a drag from a frame's background selects that frame only when the marquee also takes another top-level frame (then whole), and also takes what it touches outside it; selecting a frame whole keeps the marquee at the top level (a partly covered frame then comes whole too); locked and hidden layers are skipped (`marquee_behaviour_tests`, `selection_behaviour_tests`; measured in Figma's web app, 2026-11-11; Shift and Cmd/Ctrl marquees not measured) (a locked layer selected from the panel ignores the arrow keys and the nudge commands; its properties still edit; measured in Figma's web app, 2026-11-10) |
 | Deep select (Cmd/Ctrl-click, Cmd/Ctrl-marquee) | done | |
 | Select layer menu (every layer under the click) | done | |
 | Escape with layers selected | done | clears the selection at once, whatever the nesting; it never selects the parent. Measured in the Figma web app (2026-11-08) with a rectangle in a group in a frame, selected from the canvas (a double-click into the group), from the Layers panel, and after Tab moved the selection to its sibling: one Escape selects nothing, a second leaves nothing selected. Escape still leaves text and vector editing, ends gestures and the pen first, and ends the focus view once nothing or the focused frame is selected (`selection_behaviour_tests`, `devfocus_tests`) |
 | Enter / Shift+Enter (children / parent), Tab / Shift+Tab (siblings) | done | Tab renames the next layer while renaming |
-| Resize handles: Shift keeps proportions, Alt from centre, constraints-aware | done | Alt shrinks too; past an edge flips (several layers mirror); groups and mixed rotations scale each layer along its own axes, keeping rotation and flip (no skew: children turned off a right angle are approximate); Cmd/Ctrl ignores a frame's constraints (`transform_behaviour_tests`) |
+| Resize handles: Shift keeps proportions, Alt from centre, constraints-aware | done | Alt shrinks too; past an edge flips (several layers mirror); groups and mixed rotations scale each layer along its own axes, keeping rotation and flip (no skew: children turned off a right angle are approximate); Cmd/Ctrl ignores a frame's constraints (`transform_behaviour_tests`); Shift keeps the ratio (a corner by the axis dragged most, an edge scaling the other axis about the opposite edge's middle), Alt keeps the centre, Shift+Alt does both, each read afresh on every move (`handle_drags_resize_by_the_documented_rules`; measured in Figma's web app, 2026-11-08; Ctrl/Cmd while dragging not measurable) |
 | Rotate just outside a corner; Shift in 15° steps | done | rotated handle box when layers share a rotation; Shift lands the rotation on multiples of 15° (measured in Figma: a layer at 7° or -4.27° ends at 15°), not 15° steps from where the drag began; layers with different rotations step the turn from 0 |
 | Flip, rotate 90° | done | |
 | Rotation origin (Alt+R) | done | a handle at the selection's centre to drag (snaps to the box's corners, edge middles and centre), double-click puts it back, Escape or Alt+R hides it; the corner handles, the rotation field, Rotate 90°/180° and `transform.rotate` turn about it; it follows the layers and lasts as long as the selection, not saved (the documentation doesn't say; pinned) |
 | 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-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`. |
 | Nudge 1 / Shift 10 (preference), Cmd+arrows resize | done | arrows reorder auto layout children |
@@ -213,6 +213,7 @@ This audit records candidates for subsequent fixes; their behaviour is unchanged
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-11-12 | patch | Drag modifiers compared in Figma's web app (2026-11-08): Shift locks a move to the dominant axis with no 45° snap, Alt copies, Shift keeps a resize's ratio (an edge scales about the opposite edge's middle), Alt keeps the centre, Shift+Alt does both, and a modifier changed mid-drag is read fresh on each move; FigCraft matches in all six, Ctrl/Cmd while dragging could not be measured; no code change | this page |
 | 2026-11-10 | patch | M1, #2198: with a shape, frame, slice or Text tool the pointer was the system's crosshair, white under some pointer styles on Windows and lost on the default white frame; it is now drawn at the pointer in dark lines with a white edge, open at the centre (`Glyph::Crosshair`), so it shows on any canvas colour. |
 | 2026-11-10 | minor | M4, #2222: a boolean group takes a corner radius that rounds every sharp corner of its result (measured in Figma's web app), Boolean groups row |
 | 2026-11-08 | minor | M8: measured in Figma on 2026-11-08, vector edit mode's Point section: X and Y show the value the selected points share, or Mixed when they differ, and a typed value sets every selected point's own coordinate in the layer being edited, points of other edited layers left as they are (it moved the group's top-left before); a relative edit (`+10`, `*2`, `/2`) typed into a Mixed field applies to each point's own value (`vector.edit.position` takes a number or `{add}`, `{mul}`, `{div}` per axis); the W and H row and other edited layers' points are unchanged. |