Akiba So c045fdd3ca feat(pen): partial/segment erase + fix side-button while drawing ...

W4/P0 engine: add engine/stroke_eraser.dart (pure, aspect-corrected) with
whole-stroke `strokeHit` + partial `splitStrokeByCircle`. Grazing a long
stroke now CUTS it into surviving pieces instead of deleting it whole.
Wired through PenCanvas.onEraseStroke (now (index, replacements)) →
pen_editor_screen._eraseStroke (replaceRange); undo/persistence unchanged
(whole-page snapshot). 8 new unit tests; 66/66 pass.

Fix side-button (侧键): _isEraserSignal used `buttons == kSecondaryButton`,
but tip-down + barrel = kStylusContact|kPrimaryStylusButton = 0x03, so the
side button only registered on hover, never while drawing. Now a bitmask
test. (Eraser-end/tilt remain blocked on the silent native badnote/pen
channel — needs on-device native logging.)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

2026-06-22 12:42:26 +08:00

..

stroke_eraser.dart

feat(pen): partial/segment erase + fix side-button while drawing

2026-06-22 12:42:26 +08:00

stroke_geometry.dart

feat(pen): pressure-responsive width, configurable thinning, native Windows pen (tilt/buttons)

2026-06-22 02:10:05 +08:00

stroke_model.dart

feat(pen): pressure-responsive width, configurable thinning, native Windows pen (tilt/buttons)

2026-06-22 02:10:05 +08:00

stroke_model.freezed.dart

feat(engine): P0 stroke engine + persistence

2026-06-21 23:41:01 +08:00

stroke_model.g.dart

feat(engine): P0 stroke engine + persistence

2026-06-21 23:41:01 +08:00

stroke_store.dart

feat(engine): P0 stroke engine + persistence

2026-06-21 23:41:01 +08:00

undo_stack.dart

feat(editor): undo/redo, thumbnails, pen settings

2026-06-21 23:56:38 +08:00