v4.13.0 — nodes can be resized by dragging the bottom-right handle.
- New setNodeWidth(id, width) on the store. Clamps to [60, 600] so
shapes stay readable. Throws on unknown id; pushes an undo
snapshot like every other mutator.
- New nodeWidth(node) helper on the canvas uses node.width with a
fallback to DEFAULT_WIDTH for graphs loaded from older JSON
that didn't have the field.
- Canvas render uses the per-node width for shapeSvg + label
positioning, and edge boundaryPoint() uses it too so connection
geometry adapts to the new shape size.
- Selected node renders a bottom-right resize handle (10px square).
Clicking the handle starts a 'resize' dragState that calls
setNodeWidth on every pointermove with the screen-to-SVG delta
applied to the start width.
- The handle is detected before the generic node click handler so
it doesn't accidentally start a move drag.
3 new tests cover setNodeWidth update, clamp to [60, 600], and
unknown-id throw. The canvas change reuses the existing 14 tests
(which check rendering and pointer events) — they still pass.
Amit Haridas
Amit Haridas
ded17d0b6b