Shape tools: drawing another shape from the selected one's centre moves it

A press on the centre point of the selected shape now moves the selection, as
asked (#5477), so the Constrain Angle test's repeated draws from the same point
moved the polygon drawn before them. It deselects first: nothing selected, the
press draws.

crates/engine/src/tests/constrain_new.rs

@@ -113,6 +113,9 @@ fn constrain_angle_turns_the_base_orientation_of_polygons_and_stars() {
     let shift = Mods { shift: true, ..Mods::default() };
     let draw = |s: &mut Session, tool: &str, deg: f64| {
         set_angle(s, deg);
+        // Nothing selected: the press draws, rather than moving the shape drawn before it by the
+        // centre point it shows (#5477).
+        s.execute("select.none", &json!({})).unwrap();
         s.select_tool(tool, ViewInfo::default()).unwrap();
         gesture(s, shift, &[(Down, 100.0, 100.0), (Drag, 130.0, 140.0), (Drag, 130.0, 140.0), (Up, 130.0, 140.0)]);
         last_id(s)

docs/ui-parity.md

@@ -193,7 +193,7 @@ tools, never checked side by side) isn't captured row by row.
 | Live Corners widgets (radius readout, Alt-click cycles kind, double-click the Corners dialog) | done | a Direct Selection click on a widget selects its corner (#1239); a press-and-drag on a widget of a path selected whole still rounds every corner (#908), and adding widgets to the selection by Shift-click (#1232) is missing; the bounding box hides while a widget is dragged with the Selection tool (#1229); a round corner next to a curved side curves smoothly instead of sticking out of the shape (#1512); a corner rounds until its cut reaches its neighbours' cuts, so one corner of a square alone reaches the whole side (#2332) |
 | Corners between curved sides (#1144), Relative rounding | done | #1144 closed; Relative rounding in the Corners dialog (Relative / Absolute, radius as a percentage of each corner's maximum, kept as the shape is resized; `object.setLiveShape` `relativeRadii`, #3091, `tests_livecorners::relative_corner_rounding_keeps_fraction_on_resize`) |
 | Pie widgets on a live ellipse: drag one to set Pie Start or End Angle, double-click one to make the ellipse whole | done | Selection tool, with the bounding box showing |
-| A shape just drawn shows its bounding box and Live Shape widgets with the shape tool still active, and the selection can be moved and turned without switching tools | done | #5477: Rectangle, Rounded Rectangle, Ellipse, Polygon and Star keep the selection's bounding box, corner widgets and pie widgets on show while they draw nothing; a drag on a corner or pie widget adjusts it (arrows step the corner kind, Escape cancels), a press on the selection's centre point (Attributes › Show Center) moves the selection — the Selection tool's move arrow, snapping and Alt copy — a press just outside a corner of the box turns it about the centre (the Selection tool's rotate zone and cursor), and a press anywhere else draws. Public descriptions: [Live Shapes](https://helpx.adobe.com/illustrator/using/live-shapes.html) (live shapes adjust without switching tools) and [CreativePro, Working with Live Shapes](https://creativepro.com/?p=23921) (a widget shows in every corner on release; drag one toward the centre to round). The bounding-box handles show but scale only with the Selection tool, so a press on a corner still starts a new shape there; double-clicking a widget opens nothing with a shape tool. Tests `a_shape_tool_drags_the_selected_shapes_widgets` and `a_shape_tool_moves_the_selection_by_its_centre_point_and_turns_it_from_a_corner` |
+| A shape just drawn shows its bounding box and Live Shape widgets with the shape tool still active, and the selection can be moved and turned without switching tools | done | #5477: Rectangle, Rounded Rectangle, Ellipse, Polygon and Star keep the selection's bounding box, corner widgets and pie widgets on show while they draw nothing; a drag on a corner or pie widget adjusts it (arrows step the corner kind, Escape cancels), a press on the selection's centre point (Attributes › Show Center) moves the selection — the Selection tool's move arrow, snapping and Alt copy — a press just outside a corner of the box turns it about the centre (the Selection tool's rotate zone and cursor), and a press anywhere else draws (so a second shape drawn from the first one's centre moves the first: press elsewhere or deselect first). Public descriptions: [Live Shapes](https://helpx.adobe.com/illustrator/using/live-shapes.html) (live shapes adjust without switching tools) and [CreativePro, Working with Live Shapes](https://creativepro.com/?p=23921) (a widget shows in every corner on release; drag one toward the centre to round). The bounding-box handles show but scale only with the Selection tool, so a press on a corner still starts a new shape there; double-clicking a widget opens nothing with a shape tool. Tests `a_shape_tool_drags_the_selected_shapes_widgets` and `a_shape_tool_moves_the_selection_by_its_centre_point_and_turns_it_from_a_corner` |
 | Isolation mode by double-click (groups and single objects), breadcrumbs, Esc to exit | done | Single paths, compound paths, images, meshes and placed files isolate too ([helpx: Isolate objects](https://helpx.adobe.com/africa/illustrator/desktop/manage-objects/select-objects/isolate-objects.html)); locking or hiding the layer (or a group) around the isolated object afterwards keeps clicks and marquees off it, as outside isolation mode (#5309) |
 | "Magnetic" moves of selected anchors with a modifier (#955 request) | missing | not a feature of the reference app as documented; under discussion |
 | Coinciding anchors of overlapping objects: the selected object's anchor is taken, also under another object | done | #1508 |