discontinuedPackage jet_cad_floor_plan has been discontinued and replaced by jet_cad_2d_plan.

onKey method

@override KeyEventResult onKey(KeyEvent event, ToolContext ctx)

Spec D6 Keys, F-12. Idle (nothing armed) every key bubbles.

• R turns the next placement one quarter turn counter-clockwise, Shift+R clockwise, M toggles the mirror; only with no Ctrl, Meta or Alt held (Cmd/Ctrl+R is a browser reload, Ctrl+M passes through). One step per key-down; a repeat is consumed with no effect. They work armed idle and mid-press; the ghost repaints.
• Mid-press: Esc cancels the press (its remaining moves and its up place nothing, Ruling R-B6-1); F and F3 with no modifier bubble (the drawing tools' rule, placement_tool.dart); every other key-down and repeat is swallowed, so undo never lands mid-placement.
• Armed, not pressed: every key but R and M bubbles (the shell's letters, undo and Esc work).
• A key-up always bubbles.

Implementation

@override
KeyEventResult onKey(KeyEvent event, ToolContext ctx) {
  if (armed.value == null || event is KeyUpEvent) {
    return KeyEventResult.ignored;
  }
  final key = event.logicalKey;
  final modifier = _hasModifier();
  if (!modifier &&
      ((key == LogicalKeyboardKey.keyR && (canRotate?.call() ?? true)) ||
          (key == LogicalKeyboardKey.keyM && (canMirror?.call() ?? true)))) {
    if (event is KeyDownEvent) {
      if (key == LogicalKeyboardKey.keyR) {
        final step = HardwareKeyboard.instance.isShiftPressed ? -1 : 1;
        _quarterTurns = (_quarterTurns + step) % 4;
      } else {
        _mirrored = !_mirrored;
      }
      // Spec 09c D6, decision 5: the same pointer asks the faces again
      // with the new mirror (an attached `M` mirrors in place); the
      // attached transform ignores the turns, which apply off the face.
      _syncAttachment(ctx);
      _syncPlacement();
      notifyListeners();
    }
    return KeyEventResult.handled;
  }
  if (!_pressed) return KeyEventResult.ignored;
  if (event is KeyDownEvent) {
    if (key == LogicalKeyboardKey.escape) {
      cancel(ctx);
      return KeyEventResult.handled;
    }
    if ((key == LogicalKeyboardKey.f3 || key == LogicalKeyboardKey.keyF) &&
        !modifier) {
      return KeyEventResult.ignored;
    }
  }
  return KeyEventResult.handled;
}