endStroke method

Future<void> endStroke(int pageIndex)

Implementation

Future<void> endStroke(int pageIndex) async {
  final List<Offset>? points = _liveStrokes.remove(pageIndex);
  notifyListeners();
  if (points == null || points.length < 2) return;
  attach();
  final UPdfEdit? edit = _edit;
  if (edit == null) return;
  final UDocPageInfo info = viewer.pageInfo(pageIndex);
  final List<Offset> converted = points.map((Offset point) => devicePointToPdf(info, point)).toList();
  double left = converted.first.dx;
  double right = converted.first.dx;
  double top = converted.first.dy;
  double bottom = converted.first.dy;
  for (final Offset point in converted) {
    left = min(left, point.dx);
    right = max(right, point.dx);
    top = min(top, point.dy);
    bottom = max(bottom, point.dy);
  }
  final Rect bounds = Rect.fromLTRB(left, top, right, bottom).inflate(_strokeWidth + 2);
  int number = -1;
  switch (_tool) {
    case UPdfTool.ink:
      number = await edit.addAnnotation(
        pageIndex,
        UPdfAnnotationSpec(style: UPdfAnnotationStyle.ink, rect: bounds, inkPaths: <List<Offset>>[converted], color: _inkColor, borderColor: _inkColor, borderWidth: _strokeWidth, author: _author),
      );
      break;
    case UPdfTool.rectangle:
      number = await edit.addAnnotation(
        pageIndex,
        UPdfAnnotationSpec(style: UPdfAnnotationStyle.square, rect: bounds, color: const Color(0x00000000), borderColor: _inkColor, borderWidth: _strokeWidth, author: _author),
      );
      break;
    case UPdfTool.ellipse:
      number = await edit.addAnnotation(
        pageIndex,
        UPdfAnnotationSpec(style: UPdfAnnotationStyle.circle, rect: bounds, color: const Color(0x00000000), borderColor: _inkColor, borderWidth: _strokeWidth, author: _author),
      );
      break;
    case UPdfTool.arrow:
      number = await edit.addAnnotation(
        pageIndex,
        UPdfAnnotationSpec(
          style: UPdfAnnotationStyle.arrow,
          rect: Rect.fromPoints(converted.first, converted.last),
          color: _inkColor,
          borderColor: _inkColor,
          borderWidth: _strokeWidth,
          author: _author,
        ),
      );
      break;
    case UPdfTool.redact:
      number = await edit.addAnnotation(pageIndex, UPdfAnnotationSpec(style: UPdfAnnotationStyle.redact, rect: bounds, color: const Color(0xFF000000), author: _author));
      break;
    case UPdfTool.select:
    case UPdfTool.highlight:
    case UPdfTool.underline:
    case UPdfTool.strikeOut:
    case UPdfTool.eraser:
    case UPdfTool.note:
    case UPdfTool.textBox:
      return;
  }
  if (number > 0) _undoStack.add(number);
  viewer.invalidatePage(pageIndex);
  notifyListeners();
}