[wstock]

Part of #394. Seven of the Smart Guides preferences that were stored but read by nothing now do what their labels say, for the mouse and for agents (prefs.set, then pointer_gesture). The issue stays open for the rest.

Preferences › Smart Guides

• Color: the smart guides' lines and labels take the preference's colour. Its default is now #ff3dfc, the magenta the tools have always drawn, so nothing changes until it is edited.
• Alignment Guides off: no line is drawn along the edge or centre the art lines up with. The art still snaps into line (these are display options; snapping is unchanged).
• Anchor/Path Labels off: no "anchor", "center", "path" or "align" label.
• Measurement Labels off: no size or offset readout while drawing (shapes, the freehand family, slices), moving a selection, dragging a ruler guide, or drawing and resizing an artboard.
• Transform Tools off: no readout while scaling or rotating with the Selection tool, Free Transform, or the Rotate/Scale/Shear/Reflect tools.
• Object Highlighting off: the Selection tools no longer outline the object under the pointer. The outline now also needs View › Smart Guides on, since it is one of their display options.
• Snapping Tolerance (0–40 px, 4 by default, as in Illustrator): replaces the 5 px hard-coded for every smart guide snap — drawn points, dragged selections, bounding-box handles, ruler guides, artboards and reference points. Snap to Point keeps its own snapToPointTolerance.

How

• vectorcraft_tools::guides::GuideStyle (colour, lines, labels) rides on Targets (Targets::styled(cx)), so every snap method draws through two helpers instead of the MAGENTA literal; ToolContext gains the six fields and snap_tol(). The tools gate their Overlay::Measure readouts on measurement_labels / transform_tools_guides.
• The engine fills them from Prefs in with_tool_cx (the colour parsed with vectorcraft_color::Color::from_hex, falling back to magenta); the canvas's hover outline checks object_highlighting and view.smart_guides.
• docs/mcp.md (Selection preferences: a Smart Guides list, with what is still unread), ROADMAP (Shipped so far, UI chrome row).

Skipped (the tools draw neither yet): Construction Guides and their Angles, Spacing Guides.

Tests (each fails without the change)

• tools: guides::display_options_colour_and_hide_the_guides_but_keep_the_snap, select::smart_guide_display_preferences_drive_the_readouts_and_the_pull (readouts per option; a handle 6 px from a target is pulled at tolerance 8, not at 4 or 0).
• engine tests_prefs::smart_guide_display_preferences_filter_the_overlays: through prefs.set and real pointer gestures — colour, alignment lines off while the square still lines up, measurement and transform readouts, the tolerance, and the "anchor" label of a drawn corner.
• ui-egui canvas::object_highlighting_preference_hides_the_hover_outline (headless egui frame with a pointer move).
• cargo fmt --check; cargo clippy --all-targets -- -D warnings on tools, engine and ui-egui; cargo test -p vectorcraft-tools, -p vectorcraft-engine tests_prefs and -p vectorcraft-ui-egui canvas:: all pass (Linux, rebased on today's main after Part of #394: Preferences that act on selection, the wheel, tool tips and the grid #413/Part of #394: Preferences for snapping, handles, rubber bands, pattern tiles, tints and type #422). The only clippy complaint on a 1.99 toolchain is clippy::chunks_exact_to_as_chunks in cursors.rs (from [BUG] Mouse sluggish when moving over Vectorcraft #444, untouched here).

Parity source (feature names only): the Smart Guides preferences page, https://helpx.adobe.com/illustrator/using/smart-guides.html.

Developed with AI assistance (Claude Code); reviewed and tested locally.

[bflatastic]

Thanks @wstock, and welcome! This is a really clean piece of work. GuideStyle on Targets and snap_tol() brought seven dead Smart Guides preferences to life with very little code, and the tests drive them through real gestures. I rebased it on main and added one commit on top (yours stays yours):

• Ruler guides: I rebased it onto today's ruler-guide snapping (Part of #451: guides dragged out of the rulers snap, artboard guides #454), so guides dragged out of the rulers follow your Snapping Tolerance, Color, Anchor/Path Labels and Measurement Labels too. A test covers it.
• Align label: the "align" label stays when an artboard handle is already exactly in line (Targets::align_rects), with a test.
• Readouts: Free Transform's move offset and the Slice tool's move and resize readouts now follow Measurement Labels, and Free Transform's scale and rotate readouts follow Transform Tools, the same as the Selection tool.
• Smart Guides off: Snap to Point keeps the default look for moves, and docs/mcp.md now lists what Measurement Labels covers.

Checked live in the app (colour, labels and alignment lines each switch off as expected while snapping still works) and over MCP (prefs.set plus pointer_gesture: a 6 px gap snaps at tolerance 8 but not at 4). If you'd like to chat with the team and other contributors, join us on our Discord: https://discord.gg/artcraft