RenderSignaturePad constructor

RenderSignaturePad({ required double minimumStrokeWidth, required double maximumStrokeWidth, required Color backgroundColor, required Color strokeColor, required DeviceGestureSettings gestureSettings, SignatureOnDrawStartCallback? onDrawStart, SignatureDrawCallback? onDraw, VoidCallback? onDrawEnd, })

Creates a new instance of RenderSignaturePad.

Implementation

RenderSignaturePad({
  required double minimumStrokeWidth,
  required double maximumStrokeWidth,
  required Color backgroundColor,
  required Color strokeColor,
  required DeviceGestureSettings gestureSettings,
  SignatureOnDrawStartCallback? onDrawStart,
  SignatureDrawCallback? onDraw,
  VoidCallback? onDrawEnd,
}) : _minimumStrokeWidth = minimumStrokeWidth,
     _maximumStrokeWidth = maximumStrokeWidth,
     _backgroundColor = backgroundColor,
     _strokeColor = strokeColor,
     _onDrawStart = onDrawStart,
     _onDraw = onDraw,
     _gestureArenaTeam = GestureArenaTeam(),
     _onDrawEnd = onDrawEnd {
  _panGestureRecognizer =
      PanGestureRecognizer()
        ..team = _gestureArenaTeam
        ..onStart = _handleDragStart
        ..onUpdate = _handleDragUpdate
        ..onEnd = _handleDragEnd
        ..gestureSettings = gestureSettings
        ..dragStartBehavior = DragStartBehavior.down;

  _verticalDragGestureRecognizer =
      VerticalDragGestureRecognizer()
        ..team = _gestureArenaTeam
        ..gestureSettings = gestureSettings
        ..onStart = _dragStart;

  _horizontalDragGestureRecognizer =
      HorizontalDragGestureRecognizer()
        ..team = _gestureArenaTeam
        ..gestureSettings = gestureSettings
        ..onStart = _dragStart;

  _tapGestureRecognizer = TapGestureRecognizer()..onTapUp = _handleTapUp;

  _gestureArenaTeam.captain = _panGestureRecognizer;

  _paintStrokeStyle =
      Paint()
        ..color = _strokeColor
        ..strokeWidth = _kMaximumStrokeWidth
        ..strokeCap = StrokeCap.round
        ..style = PaintingStyle.fill
        ..isAntiAlias = true;

  _paintBackgroundStyle =
      Paint()
        ..color = backgroundColor
        ..style = PaintingStyle.fill
        ..isAntiAlias = true;

  _restrictBezierPathCalculation = _minimumStrokeWidth == _maximumStrokeWidth;
  _data = <List<_TouchPoint>>[];
  _bezierPoints = <_CachePoint>[];
  _lastPoints = <_TouchPoint>[];
  _dotPoints = <Offset>[];
  _pathCollection = <Path>[];
  _currentPath = Path();
  _reset();
}