paint method

  1. @override
void paint(
  1. Canvas canvas,
  2. Size size,
  3. ExtendedImageCropLayerPainter painter
)

Implementation

@override
  void paint(Canvas canvas, Size size, ExtendedImageCropLayerPainter painter) {
    paintMask(canvas, size, painter);
     //定义画笔
  Paint paint = Paint()
    ..color = Colors.grey
    ..strokeCap = StrokeCap.square
    ..isAntiAlias = true
    ..strokeWidth = 3.0
    ..style = PaintingStyle
        .stroke; //画笔样式有填充PaintingStyle.fill 及没有填充PaintingStyle.stroke 两种

  canvas.drawCircle(const Offset(200.0, 150.0), 150.0, paint);
  }