/// <summary>
/// 保存文件
/// </summary>
/// <param name="fileInfo"></param>
/// <param name="stream"></param>
/// <param name="extraArgs"></param>
/// <returns></returns>
public override async Task <FileMetaInfo> SaveAsync(FileMetaInfo fileInfo, Stream stream, IDictionary <string, object> extraArgs)
{
if (extraArgs == null || !extraArgs.ContainsKey("context"))
{
throw new ArgumentException("extraArgs 参数需要context键值");
}
var context = extraArgs["context"].ToString();
var rule = FileStoreRuleManager.GetRuleByName(context) as ImageStoreRule;
if (rule == null)
{
throw new Exception("未找到指定规则或默认规则:" + context);
}
fileInfo.Id = Guid.NewGuid().ToString();
var name = GetInnerFileName(fileInfo);
var dir = rule.GetSaveDir();
await SaveFileAsync(dir, name, stream);
fileInfo.Path = Path.Combine(rule.GetSaveDir(), name).Replace("\\", "/");
//保存文件信息
await MetaInfoStore.SaveAsync(fileInfo, rule.Id);
return(fileInfo);
}
/// <summary>
/// 添加水印
/// </summary>
/// <param name="imageStream"></param>
/// <returns></returns>
private async Task <Stream> AddWaterMarkAsync(Stream imageStream)
{
imageStream.Position = 0;
var stream = new MemoryStream();
using (var imageF = new ImageFactory())
{
imageF.Load(imageStream);
var image = imageF.Image;
var watermarkImage = FileStoreRuleManager.GetWatermarkImage(image.Size);
var imgl = new ImageLayer();
imgl.Image = watermarkImage;
imageF.AutoRotate();
imageF.Overlay(imgl);
imageF.Save(stream);
return(stream);
}
using (var image = Image.FromStream(imageStream.Duplicate()))
{
var watermarkImage = FileStoreRuleManager.GetWatermarkImage(image.Size);
return(image.AddWatermark((Image)watermarkImage.Clone(), 5, 100, 10));
}
}
/// <summary>
/// 保存
/// </summary>
/// <param name="fileInfo"></param>
/// <param name="stream"></param>
/// <param name="extraArgs"></param>
/// <returns></returns>
public override async Task <FileMetaInfo> SaveAsync(FileMetaInfo fileInfo, Stream stream, IDictionary <string, object> extraArgs)
{
if (extraArgs == null || !extraArgs.ContainsKey("context"))
{
throw new ArgumentException("extraArgs 参数需要context键值");
}
var context = extraArgs["context"].ToString();
var rule = FileStoreRuleManager.GetRuleByName(context) as ImageStoreRule;
if (rule == null)
{
throw new Exception("未找到指定规则或默认规则:" + context);
}
Guid fileId;
bool modify = false;
;
if (extraArgs.ContainsKey("fileid") && Guid.TryParse(extraArgs["fileid"].ToString(), out fileId))
{
int rotate;
if (extraArgs.ContainsKey("rotate") && int.TryParse(extraArgs["rotate"].ToString(), out rotate))
{
modify = true;
var fi = await GetOriginalAsync(fileId.ToString());
fileInfo = fi.Item1;
var fileStream = fi.Item2;
var imageFactory = new ImageFactory();
var ms = new MemoryStream();
imageFactory.Load(fileStream).AutoRotate().Rotate(rotate).Save(ms);
ms.Position = 0;
stream = ms;
fileStream.Dispose();
}
}
else if (!fileInfo.Extension.ToLower().EndsWith("gif"))
{
var ms = new MemoryStream();
var imageF = new ImageFactory();
imageF.Load(stream).AutoRotate().Save(ms);
ms.Position = 0;
stream.Position = 0;
stream = ms;
}
;
if (string.IsNullOrWhiteSpace(fileInfo.Id) || fileInfo.Id == default(Guid).ToString())
{
fileInfo.Id = Guid.NewGuid().ToString();
}
await SaveInternalAsync(fileInfo, stream, extraArgs, rule, modify);
return(fileInfo);
}
