getClip method

@override Path getClip(Size size)

Returns a description of the clip given that the render object being clipped is of the given size.

Implementation

@override
Path getClip(Size size) {
  Path path = Path();

  switch (transitionType) {
    case TransitionType.LEFT_TO_RIGHT:
      path.lineTo(size.width * clipFactor, 0.0);
      path.lineTo(size.width * clipFactor, size.height);
      path.lineTo(0.0, size.height);
      break;
    case TransitionType.RIGHT_TO_LEFT:
      path.moveTo(size.width, 0.0);
      path.lineTo(size.width * clipFactor, 0.0);
      path.lineTo(size.width * clipFactor, size.height);
      path.lineTo(size.width, size.height);
      break;

    case TransitionType.TOP_TO_BOTTOM:
      path.lineTo(0.0, size.height * clipFactor);
      path.lineTo(size.width, size.height * clipFactor);
      path.lineTo(size.width, 0.0);
      break;
    case TransitionType.BOTTOM_TO_TOP:
      path.moveTo(0.0, size.height);
      path.lineTo(0.0, size.height * clipFactor);
      path.lineTo(size.width, size.height * clipFactor);
      path.lineTo(size.width, size.height);

      break;
    case TransitionType.CENTER_LR_IN:
      path.moveTo(size.width / 2 * clipFactor, 0);
      path.lineTo(0, 0);
      path.lineTo(0, size.height);
      path.lineTo(size.width, size.height);
      path.lineTo(size.width, 0);
      path.lineTo(size.width - (size.width / 2 * clipFactor), 0);
      path.lineTo(size.width - (size.width / 2 * clipFactor), size.height);
      path.lineTo(size.width / 2 * clipFactor, size.height);

      break;
    case TransitionType.CENTER_TB_IN:
      path.moveTo(0, size.height / 2 * clipFactor);
      path.lineTo(0, 0);
      path.lineTo(size.width, 0);
      path.lineTo(size.width, size.height / 2 * clipFactor);
      path.lineTo(0, size.height / 2 * clipFactor);
      path.lineTo(0, size.height);
      path.lineTo(size.width, size.height);
      path.lineTo(size.width, size.height - (size.height / 2 * clipFactor));
      path.lineTo(0, size.height - (size.height / 2 * clipFactor));
      break;
    case TransitionType.CENTER_LR_OUT:
      var halfWidth = size.width / 2;
      var clipFactorWidth = halfWidth * clipFactor;
      path.moveTo(halfWidth, 0.0);
      path.lineTo(halfWidth - clipFactorWidth, 0);
      path.lineTo(halfWidth - clipFactorWidth, size.height);
      path.lineTo(halfWidth + clipFactorWidth, size.height);
      path.lineTo(halfWidth + clipFactorWidth, 0);
      break;
    case TransitionType.CENTER_TB_OUT:
      var halfHeight = size.height / 2;
      var clipFactorHeight = halfHeight * clipFactor;
      path.moveTo(0.0, halfHeight);
      path.lineTo(0, halfHeight - clipFactorHeight);
      path.lineTo(size.width, halfHeight - clipFactorHeight);
      path.lineTo(size.width, halfHeight + clipFactorHeight);
      path.lineTo(0.0, halfHeight + clipFactorHeight);
      break;
    case TransitionType.LEFT_TOP_ROUNDER:
      path.addOval(Rect.fromCircle(
          center: Offset(0, 0),
          radius:
              (sqrt((size.width * size.width) + (size.height * size.height)) *
                  clipFactor)));
      break;
    case TransitionType.LEFT_BOTTOM_ROUNDER:
      path.addOval(Rect.fromCircle(
          center: Offset(0, size.height),
          radius:
              (sqrt((size.width * size.width) + (size.height * size.height)) *
                  clipFactor)));
      break;
    case TransitionType.LEFT_CENTER_ROUNDER:
      path.addOval(Rect.fromCircle(
          center: Offset(0, size.height / 2),
          radius:
              (sqrt((size.width * size.width) + (size.height * size.height)) *
                  clipFactor)));
      break;
    case TransitionType.RIGHT_BOTTOM_ROUNDER:
      path.addOval(Rect.fromCircle(
          center: Offset(size.width, size.height),
          radius:
              (sqrt((size.width * size.width) + (size.height * size.height)) *
                  clipFactor)));
      break;
    case TransitionType.RIGHT_TOP_ROUNDER:
      path.addOval(Rect.fromCircle(
          center: Offset(size.width, 0),
          radius:
              (sqrt((size.width * size.width) + (size.height * size.height)) *
                  clipFactor)));
      break;
    case TransitionType.RIGHT_CENTER_ROUNDER:
      path.addOval(Rect.fromCircle(
          center: Offset(size.width, size.height / 2),
          radius:
              (sqrt((size.width * size.width) + (size.height * size.height)) *
                  clipFactor)));
      break;
    case TransitionType.TOP_CENTER_ROUNDER:
      path.addOval(Rect.fromCircle(
          center: Offset(size.width / 2, 0),
          radius:
              (sqrt((size.width * size.width) + (size.height * size.height)) *
                  clipFactor)));
      break;
    case TransitionType.BOTTOM_CENTER_ROUNDER:
      path.addOval(Rect.fromCircle(
          center: Offset(size.width / 2, size.height),
          radius:
              (sqrt((size.width * size.width) + (size.height * size.height)) *
                  clipFactor)));
      break;
    case TransitionType.CENTER_ROUNDER:
      path.addOval(Rect.fromCircle(
          center: Offset(size.width / 2, size.height / 2),
          radius:
              (sqrt((size.width * size.width) + (size.height * size.height)) *
                  clipFactor)));
      break;
  }
  path.close();
  return path;
}