computeOffsets method

(Offset, Offset) computeOffsets(Offset position, Size size)

Implementation

(Offset, Offset) computeOffsets(Offset position, Size size) {
  switch (this) {
    case GradientOrientation.topBottom:
      return (
        Offset(
          position.dx - size.width / 2,
          position.dy - size.height / 2,
        ),
        Offset(
          position.dx - size.width / 2,
          position.dy + size.height / 2,
        )
      );
    case GradientOrientation.topRightBottomLeft:
      return (
        Offset(
          position.dx + size.width / 2,
          position.dy - size.height / 2,
        ),
        Offset(
          position.dx - size.width / 2,
          position.dy + size.height / 2,
        )
      );
    case GradientOrientation.rightLeft:
      return (
        Offset(
          position.dx + size.width / 2,
          position.dy - size.height / 2,
        ),
        Offset(
          position.dx - size.width / 2,
          position.dy - size.height / 2,
        )
      );
    case GradientOrientation.bottomRightTopLeft:
      return (
        Offset(
          position.dx + size.width / 2,
          position.dy + size.height / 2,
        ),
        Offset(
          position.dx - size.width / 2,
          position.dy - size.height / 2,
        )
      );
    case GradientOrientation.bottomTop:
      return (
        Offset(
          position.dx - size.width / 2,
          position.dy + size.height / 2,
        ),
        Offset(
          position.dx - size.width / 2,
          position.dy - size.height / 2,
        )
      );
    case GradientOrientation.bottomLeftTopRight:
      return (
        Offset(
          position.dx - size.width / 2,
          position.dy + size.height / 2,
        ),
        Offset(
          position.dx + size.width / 2,
          position.dy - size.height / 2,
        )
      );
    case GradientOrientation.leftRight:
      return (
        Offset(
          position.dx - size.width / 2,
          position.dy - size.height / 2,
        ),
        Offset(
          position.dx + size.width / 2,
          position.dy - size.height / 2,
        )
      );
    default:
      /* topLeftBottomRight */
      return (
        Offset(
          position.dx - size.width / 2,
          position.dy - size.height / 2,
        ),
        Offset(
          position.dx + size.width / 2,
          position.dy + size.height / 2,
        )
      );
  }
}