Smart Guides: Parametric Shape and Slice tools snap as the drawing tools do

The Parametric Shape tool's center and the Slice tool's corners snapped
with Smart Guides to the bounds of the art only, so View › Snap to Glyph
had no effect on them, and neither did the anchors and segments of
paths that the other drawing tools snap to. The point dragged out from a
Parametric Shape's center did not snap at all, and neither tool showed
Smart Guides while hovering before a press.

Both tools now snap through the drawing tools' shared snapping
(DrawSnap). A Parametric Shape's center (from a drag or a double-click),
the point dragged out from it, and a slice's corners land on glyph
guides and on path anchors and segments. The guides show while hovering
and during the drag. When a ruler guide then takes a slice corner, the
Smart Guides are no longer shown. A click with the Parametric Shape tool
still draws nothing when its center snaps a few pixels from the pointer.

Docs: docs/mcp.md, docs/target-app-parity.md.

docs/mcp.md

@@ -7365,8 +7365,8 @@ restore the selection that was cleared. While the slices are locked or hidden, a
 ```
 
 The Slice tool (`slice`, Shift+K) and the Slice Selection tool (`sliceSelection`) reduce to commands:
-`object.slice.create {x, y, width, height}` (the Slice tool's drag; it snaps to ruler guides), `object.slice.select
-{slices?, toggle?}`, `object.slice.move {slices?, dx, dy}` (an object slice moves its object),
+`object.slice.create {x, y, width, height}` (the Slice tool's drag; it snaps as drawn points do, then to ruler guides),
+`object.slice.select {slices?, toggle?}`, `object.slice.move {slices?, dx, dy}` (an object slice moves its object),
 `object.slice.setRect {id, x, y, width, height}` (user slices) and `object.slice.delete {slices?}`. Slice ids are user
 slice ids and the ids of objects with an object slice. `object.slice.select` with `slices` left out or null deselects
 the slices.
@@ -10709,7 +10709,8 @@ Tools:
   centre (move), the box's lower right corner (size; Shift keeps the proportions), a handle above the top (rotation;
   Shift: 45° steps), a dot on the top edge (corner radius) and one of the kind's own (a star's or ring's inner radius, a
   gear's tooth height, an arrow's head, a cross's bar, a heart's notch, a bubble's tail tip); each drag runs
-  `addon.pathtools.shape.set`. A double-click on the canvas places a shape with the last settings. Options
+  `addon.pathtools.shape.set`. A double-click on the canvas places a shape with the last settings. A new shape's
+  center and the point dragged out from it snap as drawn points do. Options
   (`tool.setOption`, or the panel with no shape selected) are the next shape's numbers, as the commands take them.
 - **Corner Tool** (`cornerTool`, or the UI command `addon.pathtools.cornerTool`, which also shows the Anchor Inspector
   panel with its Corners section): edits the app's Live Corners on any path, selected or not. Over an anchor where two

docs/target-app-parity.md

@@ -1181,8 +1181,8 @@ Moved from the ROADMAP's "Shipped so far" on 2026-10-10. Update it when a featur
   Distance Guides: with Smart Guides on (View › Smart Guides and Preferences › Smart Guides › Invoke Distance Guides, on by default), something selected and the Selection tool, holding Alt/Option over another object shows the distances between the selection's bounds and that object's: on an axis on which they lie apart, one line across the gap between their facing edges; on one on which they overlap, the offsets of their left and right (top and bottom) edges, each line running across the middle of where they overlap, with a dashed line out to the other object's edge when it passes beside it. Over an empty part of an artboard it shows the selection's distances from the artboard's left, right, top and bottom edges. Each line has ticks at its ends and its length in a pill of the smart guide colour, in the General unit; letting Alt go, pressing (a pan or zoom press too), moving off them, leaving the canvas or a floating panel, menu or dialog over the pointer takes them away, and with the pointer still they follow what lies under it as the view scrolls, zooms or turns, as the document, the tab or the selection changes, and when the Selection tool is switched to. Behaviour from the public [Use Distance Guides for accurate placement](https://helpx.adobe.com/illustrator/desktop/measure-and-align/grids-and-guides/use-distance-guides-for-accurate-placement.html) and [Smart Guides options](https://helpx.adobe.com/illustrator/desktop/measure-and-align/grids-and-guides/smart-guides-options.html) pages, which describe hovering only: nothing shows while moving or nudging. Tests: `select::tests::alt_over_*`, `select::tests::distance_guides_need_alt_a_selection_and_smart_guides`, `tests_prefs::invoke_distance_guides_measures_the_selection_to_the_object_under_alt`, `canvas::tests::alt_over_another_object_draws_the_distance_guide_label`, `canvas::tests::distance_guides_go_when_the_hover_ends`, `canvas::tests::distance_guides_follow_what_lies_under_a_still_pointer`.
   A move pressed on a path's stroke, or within 6 px of its outline away from its anchors and center, is held by the nearest point of that path, with the Selection, Group Selection or Direct Selection tool, and a straight segment Direct Selection drags is held by its own nearest point. That point is what snaps, so the path lands exactly on a ruler guide (with "align") instead of the pressed spot landing there and the path a few pixels beside it, an offset that showed only zoomed far in (#3701). A press in the middle of a fill still snaps the pressed spot: the public [Align objects with guides](https://helpx.adobe.com/illustrator/desktop/measure-and-align/grids-and-guides/align-graphic-objects-with-guides.html) page has Snap to Point align the point under the pointer, which is placed exactly where the object should meet the guide.
   A bounding-box handle dragged with the Selection or Free Transform tool snaps what it moves as a dragged point snaps (#2054). With View › Snap to Grid on, it snaps to the nearest gridline, and with Snap to Pixel on, it snaps to whole pixels. With Smart Guides off and Snap to Point on, it snaps to the other objects' anchors and the ruler guides within the Snap to Point distance. With Smart Guides and Snap to Point both on, it lines up with the ruler guides as well as the other objects. Shift still keeps the proportions, and Alt still scales about the center.
-  A user slice's edge or corner handle dragged with the Slice Selection tool snaps as the Slice tool's drag does. With View › Snap to Grid on, it snaps to the nearest gridline, and with Snap to Pixel on, it snaps to whole pixels. Otherwise, with Smart Guides on, it lands on or lines up with the anchors, centers and edges of the art and the artboards, and with Smart Guides off and Snap to Point on, it snaps to the art's anchors and the ruler guides within the Snap to Point distance. Then a ruler guide within 5 px, shown and unlocked, moves the side or corner onto it. Shift still keeps the proportions, and Alt still resizes about the center.
-  View › Snap to Glyph: with Smart Guides on, a point drawn near a single line of live type lands on its glyphs' anchor points and lines up with its baseline, its x-height and the edges of each character's advance width (proximity guides), as well as the glyph bounds: each glyph's box gives edge guides and four corners a point lands on, even where its outline curves (the right of `B`), and the box follows the glyph's size, scaling and rotation (#5112). In rotated type these guides run at the type's angle, and type of one glyph also has angular guides along its slanted straight segments. A paragraph shows glyph bounds only.
+  A user slice's edge or corner handle dragged with the Slice Selection tool snaps as a bounding-box handle does. With View › Snap to Grid on, it snaps to the nearest gridline, and with Snap to Pixel on, it snaps to whole pixels. Otherwise, with Smart Guides on, it lands on or lines up with the anchors, centers and edges of the art and the artboards, and with Smart Guides off and Snap to Point on, it snaps to the art's anchors and the ruler guides within the Snap to Point distance. Then a ruler guide within 5 px, shown and unlocked, moves the side or corner onto it. Shift still keeps the proportions, and Alt still resizes about the center.
+  View › Snap to Glyph: with Smart Guides on, a point drawn near a single line of live type lands on its glyphs' anchor points and lines up with its baseline, its x-height and the edges of each character's advance width (proximity guides), as well as the glyph bounds: each glyph's box gives edge guides and four corners a point lands on, even where its outline curves (the right of `B`), and the box follows the glyph's size, scaling and rotation (#5112). In rotated type these guides run at the type's angle, and type of one glyph also has angular guides along its slanted straight segments. A paragraph shows glyph bounds only. A Parametric Shape's center (drawn with a drag or placed with a double-click) and the point dragged out from it, and the corners of a slice drawn with the Slice tool, snap as other drawn points do: to these guides, and to the anchors and segments of paths. Tested in `crates/tools/src/guides/tests.rs`.
   Snap to Glyph options (#4232, [Snap to Glyph options](https://helpx.adobe.com/illustrator/desktop/design-with-text/special-characters-glyphs/snap-to-glyph-options.html)): the Character panel menu's Show Snap to Glyph Options (Hide Snap to Glyph Options) shows a Snap to Glyph section in the panel, with or without type selected, with a checkbox for each kind of guide: Baseline, x-height, Glyph Bounds, Proximity Guides (the edges of each character's width), Angular Guides and Anchor Point. Each off takes its guides away and leaves the others (`view.snapToGlyph.options`, the `glyphSnap` preference group, all on by default). Angular Guides covers a glyph's slanted strokes and every guide of rotated type, which runs at its angle; the boxes are dimmed while View › Snap to Glyph is off, and the section starts with a Snap to Glyph checkbox for it (VectorCraft choices; the page settles neither). Showing the section scrolls the panel to it, since it comes after every character attribute (#5273). Tested in `crates/tools/src/guides/tests.rs`, `crates/ui-egui/src/panels/character/tests.rs` and `crates/engine/src/tests/prefs.rs`.
 - **Artboard click-to-fit (#1227):** a plain click fits the topmost editable object or group to a new artboard, including its stroke like Fit to Selected Art, and makes the new artboard active. Art and its selection stay unchanged; creation is one undo step. Handles, modified clicks, drags, Escape and tool changes retain their meaning. Tested inside an artboard and on the pasteboard (`crates/engine/tests/it/artboard_click.rs`); the public [CS6 Printing Guide](https://helpx.adobe.com/content/dam/help/en/indesign/pdf/CS6_PrintGuide.pdf) documents the object-click gesture. This legacy gesture adds evidence without regrading the 2026 canvas controls.
 - **Rotated views:** with the view rotated, Fit Artboard in Window, Fit All in Window and the status bar's artboard navigator fit the artboard or the art as the view turns it, and a Zoom tool marquee (Animated Zoom or GPU Performance off) zooms to the area dragged across. Ruler guides on no artboard turn with the view. The canvas draws the selection marquee where the tools select, Show Hidden Characters draws the marks of type partly inside the canvas, the Contextual Task Bar stays under the selection, and the Navigator's red box outlines what the window shows.