generateThumbnailAndSave static method

Future<ImageResult<String>> generateThumbnailAndSave(dynamic source, String savePath, { int maxWidth = 150, int maxHeight = 150, int quality = 80, ThumbnailFormat format = ThumbnailFormat.jpeg, })

生成缩略图并保存到指定路径

source 同 generateThumbnail savePath 完整的保存路径（含文件名和扩展名），由调用方保证目录存在 其余参数同 generateThumbnail

返回 ImageResult<String>，data 为保存的文件路径。

Implementation

static Future<ImageResult<String>> generateThumbnailAndSave(
  dynamic source,
  String savePath, {
  int maxWidth = 150,
  int maxHeight = 150,
  int quality = 80,
  ThumbnailFormat format = ThumbnailFormat.jpeg,
}) async {
  final result = await generateThumbnail(
    source,
    maxWidth: maxWidth,
    maxHeight: maxHeight,
    quality: quality,
    format: format,
  );

  if (!result.isSuccess) {
    return ImageResult.failure(result.error!);
  }

  try {
    final outFile = File(savePath);
    final outDir = outFile.parent;
    if (!await outDir.exists()) {
      await outDir.create(recursive: true);
    }
    await outFile.writeAsBytes(result.data!);
    return ImageResult.success(savePath);
  } catch (e) {
    return ImageResult.failure('写入文件失败: $e');
  }
}