/// <summary>
/// 删除垃圾临时附件
/// </summary>
public void DeleteTrashTemporaryAttachments()
{
IAttachmentSettingsManager attachmentSettingsManager = DIContainer.Resolve <IAttachmentSettingsManager>();
if (attachmentSettingsManager == null)
{
return;
}
AttachmentSettings attachmentSettings = attachmentSettingsManager.Get();
int temporaryAttachmentStorageDay = attachmentSettings.TemporaryAttachmentStorageDay;
if (temporaryAttachmentStorageDay < 1)
{
temporaryAttachmentStorageDay = 1;
}
IEnumerable <T> attachments = attachmentRepository.GetTrashTemporaryAttachments(temporaryAttachmentStorageDay);
if (attachments.Count() == 0)
{
return;
}
foreach (var attachment in attachments)
{
DeleteStoredFile(attachment);
}
attachmentRepository.DeleteTrashTemporaryAttachments(temporaryAttachmentStorageDay);
}
/// <summary>
/// 创建附件
/// </summary>
/// <param name="attachment">附件</param>
/// <param name="contentStream">文件流</param>
public void Create(T attachment, Stream contentStream)
{
if (contentStream == null)
{
return;
}
if (attachment.MediaType == MediaType.Image)
{
//检查是否需要缩放原图
if (TenantAttachmentSettings.MaxImageWidth > 0 || TenantAttachmentSettings.MaxImageHeight > 0)
{
int maxWidth = TenantAttachmentSettings.MaxImageWidth > 0 ? TenantAttachmentSettings.MaxImageWidth : attachment.Width;
int maxHeight = TenantAttachmentSettings.MaxImageHeight > 0 ? TenantAttachmentSettings.MaxImageHeight : attachment.Height;
if (attachment.Width > maxWidth || attachment.Height > maxHeight)
{
Stream resizedStream = ImageProcessor.Resize(contentStream, maxWidth, maxHeight, ResizeMethod.KeepAspectRatio);
if (resizedStream != contentStream)
{
contentStream.Dispose();
}
contentStream = resizedStream;
}
}
IAttachmentSettingsManager attachmentSettingsManager = DIContainer.Resolve <IAttachmentSettingsManager>();
AttachmentSettings attachmentSettings = attachmentSettingsManager.Get();
Image image = Image.FromStream(contentStream);
bool isGif = ImageProcessor.IsGIFAnimation(image);
//检查是否需要打水印
if (!isGif && TenantAttachmentSettings.EnableWatermark && attachmentSettings.WatermarkSettings.WatermarkType != WatermarkType.None && image.Width >= attachmentSettings.WatermarkSettings.WatermarkMinWidth && image.Height >= attachmentSettings.WatermarkSettings.WatermarkMinHeight)
{
ImageProcessor imageProcessor = new ImageProcessor();
if (attachmentSettings.WatermarkSettings.WatermarkType == WatermarkType.Text)
{
TextWatermarkFilter watermarkFilter = new TextWatermarkFilter(attachmentSettings.WatermarkSettings.WatermarkText, attachmentSettings.WatermarkSettings.WatermarkLocation, attachmentSettings.WatermarkSettings.WatermarkOpacity);
imageProcessor.Filters.Add(watermarkFilter);
}
else if (attachmentSettings.WatermarkSettings.WatermarkType == WatermarkType.Image)
{
ImageWatermarkFilter watermarkFilter = new ImageWatermarkFilter(attachmentSettings.WatermarkSettings.WatermarkImagePhysicalPath, attachmentSettings.WatermarkSettings.WatermarkLocation, attachmentSettings.WatermarkSettings.WatermarkOpacity);
imageProcessor.Filters.Add(watermarkFilter);
}
//如果需要添加水印，则除水印图片以外，还需要保留原图
StoreProvider.AddOrUpdateFile(attachment.GetRelativePath(), attachment.GetOriginalFileName(), contentStream);
//给原始尺寸的图添加水印
using (Stream watermarkImageStream = imageProcessor.Process(contentStream))
{
StoreProvider.AddOrUpdateFile(attachment.GetRelativePath(), attachment.FileName, watermarkImageStream);
}
//根据设置生成不同尺寸的图片，并添加水印
if (TenantAttachmentSettings.ImageSizeTypes != null && TenantAttachmentSettings.ImageSizeTypes.Count > 0)
{
foreach (var imageSizeType in TenantAttachmentSettings.ImageSizeTypes)
{
Stream resizedStream = ImageProcessor.Resize(contentStream, imageSizeType.Size.Width, imageSizeType.Size.Height, imageSizeType.ResizeMethod);
image = Image.FromStream(resizedStream);
if (image.Width >= attachmentSettings.WatermarkSettings.WatermarkMinWidth && image.Height >= attachmentSettings.WatermarkSettings.WatermarkMinHeight)
{
using (Stream watermarkImageStream = imageProcessor.Process(resizedStream))
{
StoreProvider.AddOrUpdateFile(attachment.GetRelativePath(), StoreProvider.GetSizeImageName(attachment.FileName, imageSizeType.Size, imageSizeType.ResizeMethod), watermarkImageStream);
}
}
else
{
StoreProvider.AddOrUpdateFile(attachment.GetRelativePath(), StoreProvider.GetSizeImageName(attachment.FileName, imageSizeType.Size, imageSizeType.ResizeMethod), resizedStream);
}
if (resizedStream != contentStream)
{
resizedStream.Dispose();
}
}
}
}
else
{
StoreProvider.AddOrUpdateFile(attachment.GetRelativePath(), attachment.FileName, contentStream);
if (!isGif)
{
//根据设置生成不同尺寸的图片
if (TenantAttachmentSettings.ImageSizeTypes != null && TenantAttachmentSettings.ImageSizeTypes.Count > 0)
{
foreach (var imageSizeType in TenantAttachmentSettings.ImageSizeTypes)
{
Stream resizedStream = ImageProcessor.Resize(contentStream, imageSizeType.Size.Width, imageSizeType.Size.Height, imageSizeType.ResizeMethod);
StoreProvider.AddOrUpdateFile(attachment.GetRelativePath(), StoreProvider.GetSizeImageName(attachment.FileName, imageSizeType.Size, imageSizeType.ResizeMethod), resizedStream);
if (resizedStream != contentStream)
{
resizedStream.Dispose();
}
}
}
}
}
}
else
{
StoreProvider.AddOrUpdateFile(attachment.GetRelativePath(), attachment.FileName, contentStream);
}
if (contentStream != null)
{
contentStream.Dispose();
}
EventBus <T> .Instance().OnBefore(attachment, new CommonEventArgs(EventOperationType.Instance().Create()));
attachmentRepository.Insert(attachment);
EventBus <T> .Instance().OnAfter(attachment, new CommonEventArgs(EventOperationType.Instance().Create()));
}