decodeDecorationImage static method

DecorationImage? decodeDecorationImage(dynamic value, { bool validate = true, })

Decodes the given value to an DecorationImage. This expects the given value to follow the structure below:

{
  "alignment": <Alignment>,
  "centerSlice": <Rect>,
  "fit": <BoxFit>,
  "image": <ImageProvider>,
  "matchTextDirection": <bool>,
  "repeat": <ImageRepeat>,
  "scale": <double>
}

See also:

• decodeAlignment
• decodeBoxFit
• decodeImageProvider
• decodeImageRepeat
• decodeRect

Implementation

static DecorationImage? decodeDecorationImage(
  dynamic value, {
  bool validate = true,
}) {
  DecorationImage? result;

  if (value is DecorationImage) {
    result = value;
  } else if (value != null) {
    assert(SchemaValidator.validate(
      schemaId: '$_baseSchemaUrl/decoration_image',
      value: value,
      validate: validate,
    ));
    result = DecorationImage(
      alignment: decodeAlignment(value['alignment']) ?? Alignment.center,
      centerSlice: decodeRect(value['centerSlice']),
      // @unencodable
      // colorFilter
      fit: decodeBoxFit(value['fit']),
      image: decodeImageProvider(value['image'])!,
      matchTextDirection: JsonClass.parseBool(value['matchTextDirection']),
      repeat: decodeImageRepeat(value['repeat']) ?? ImageRepeat.noRepeat,
      scale: JsonClass.parseDouble(value['scale'], 1.0)!,
    );
  }

  return result;
}