/// <summary>
///
/// </summary>
/// <param name="im"></param>
/// <returns></returns>
private BitmapSource func_mi_回傳前壓縮圖片(ImageMagick.MagickImage im)
{
//2500
if (im.Width > M.b2.ActualWidth || im.Height > M.b2.ActualHeight) //縮小圖片後在載入
{
using (ImageMagick.IMagickImage ii = im.Clone()) {
//計算縮放比例
double d_縮放倍率 = 1;
var w03 = M.b2.ActualWidth;
var h03 = M.b2.ActualHeight;
if (ii.Width / w03 > ii.Height / h03)
{
d_縮放倍率 = M.b2.ActualWidth / ii.Width;
}
else
{
d_縮放倍率 = M.b2.ActualHeight / ii.Height;
}
//縮放
var mg = new ImageMagick.MagickGeometry();
mg.Height = (int)(ii.Height * d_縮放倍率);
mg.Width = (int)(ii.Width * d_縮放倍率);
ii.Resize(mg);
return(ii.ToBitmapSource());
}
}
else
{
return(im.ToBitmapSource());
}
}
/// <summary>
/// Constructor for converting ImageMagick.MagickGeometry and Gravity to this format.
/// </summary>
public Geometry(ImageMagick.MagickGeometry mGeo,
ImageMagick.Gravity gravity = ImageMagick.Gravity.Undefined)
: this(mGeo.X, mGeo.Y, mGeo.Width, mGeo.Height, gravity.ToAnchor())
{
}
public async Task <HttpResponseMessage> DownloadByAbsouteFilePath(string FileType, string FilePath = "")
{
return(await Task.Run <HttpResponseMessage>(async() =>
{
HttpResponseMessage result = new HttpResponseMessage(HttpStatusCode.OK);
#region 获取解析
System.Text.RegularExpressions.Regex reg = new System.Text.RegularExpressions.Regex(@"(?<FilePath>.*[.jpg|.png|.gif|.jpeg|.cab|.apk])");
var match = reg.Match(FilePath);
if (match.Success)
{
FilePath = match.Groups["FilePath"].Value;
}
reg = new System.Text.RegularExpressions.Regex(@"[0-9]+X[0-9]+");
match = reg.Match(FilePath);
var ResizeCMD = "";
if (match.Success)
{
ResizeCMD = match.Value;
}
#endregion
if (XuHos.Common.Storage.Manager.Instance.Exists(FileType, FilePath))
{
//不需要缩放
if (!string.IsNullOrEmpty(ResizeCMD))
{
//E:\XXX\XXX.80X80.jpg
var resizeImgOtputPath = string.Format("{0}.{1}", FilePath, ResizeCMD);
if (XuHos.Common.Storage.Manager.Instance.Exists(FileType, resizeImgOtputPath))
{
result.Content = new StreamContent(await XuHos.Common.Storage.Manager.Instance.OpenFile(FileType, resizeImgOtputPath));
}
else
{
var stream = await XuHos.Common.Storage.Manager.Instance.OpenFile(FileType, FilePath);
using (ImageMagick.MagickImage image = new ImageMagick.MagickImage(stream))
{
ImageMagick.MagickGeometry size = new ImageMagick.MagickGeometry(ResizeCMD);
image.Resize(size);
var resizeStream = new System.IO.MemoryStream();
image.Write(resizeStream);
await XuHos.Common.Storage.Manager.Instance.WriteFile(FileType, resizeImgOtputPath, resizeStream);
result.Content = new ByteArrayContent(image.ToByteArray());
}
}
}
else
{
result.Content = new StreamContent(await XuHos.Common.Storage.Manager.Instance.OpenFile(FileType, FilePath));
}
result.Headers.CacheControl = new CacheControlHeaderValue();
result.Headers.CacheControl.Public = true;
result.Headers.CacheControl.MaxAge = TimeSpan.FromHours(480);
result.Content.Headers.ContentType = new MediaTypeHeaderValue("Store/octet-stream");
result.Content.Headers.Expires = DateTimeOffset.Now.AddDays(20);
}
else
{
result.StatusCode = HttpStatusCode.NotFound;
}
return result;
}));
}
// Additional constructors for conversion.
/// <summary>
/// Constructor for converting ImageMagick.MagickGeometry to this format.
/// </summary>
public Geometry(ImageMagick.MagickGeometry mGeo,
Anchor anchor = Anchor.Undefined)
: this(mGeo.X, mGeo.Y, mGeo.Width, mGeo.Height, anchor)
{
}
public async Task <HttpResponseMessage> Download(
string FileType,
string ResourceID,
string ResizeCMD = "")
{
return(await Task.Run <HttpResponseMessage>(async() =>
{
HttpResponseMessage result = new HttpResponseMessage(HttpStatusCode.OK);
SysFileIndexService fileService = new SysFileIndexService(CurrentOperatorUserID);
SysFileIndex fileIndex = null;
#region 修正命令
if (!string.IsNullOrEmpty(ResizeCMD) && !ResizeCMD.ToUpper().Contains("X"))
{
ResourceID = ResourceID + "." + ResizeCMD;
ResizeCMD = "";
}
#endregion
ResourceID = ResourceID.ToUpper();
#region 从缓存中获取，如果不存在则重建缓存
var fileIndexCacheKey = new XuHos.Common.Cache.Keys.EntityCacheKey <SysFileIndex>(StringCacheKeyType.SysFileIndex, ResourceID);
//获取缓存中的数据
fileIndex = fileIndexCacheKey.FromCache();
//从数据库中重建索引
if (fileIndex == null)
{
if (ResourceID.Length == 32)
{
fileIndex = fileService.Single <SysFileIndex>(a => a.MD5 == ResourceID && a.FileType == FileType);
}
else
{
fileIndex = fileService.Single <SysFileIndex>(a => a.FileUrl == ResourceID && a.FileType == FileType);
}
if (fileIndex != null)
{
fileIndex.ToCache(fileIndexCacheKey, TimeSpan.FromHours(2));
}
}
#endregion
if (fileIndex != null)
{
string etag = string.Format("\"{0}\"", fileIndex.MD5);
var tag = Request.Headers.IfNoneMatch.FirstOrDefault();
if (Request.Headers.IfModifiedSince.HasValue && tag != null && tag.Tag == etag)
{
result.StatusCode = HttpStatusCode.NotModified;
}
else
{
#region 重新读取文件
if (XuHos.Common.Storage.Manager.Instance.Exists(FileType, fileIndex.FileUrl))
{
#region 文件存在
//不需要缩放
if (!string.IsNullOrEmpty(ResizeCMD) && FileType.ToLower() == "images")
{
//80X80 统一成小写 Exists 的时候 不区分大小，但是OpenFile确区分大小写
ResizeCMD = ResizeCMD.ToLower();
//E:\XXX\XXX.80X80.jpg
var resizeImgOtputPath = string.Format("{0}.{1}", fileIndex.FileUrl, ResizeCMD);
if (XuHos.Common.Storage.Manager.Instance.Exists(FileType, resizeImgOtputPath))
{
var stream = await XuHos.Common.Storage.Manager.Instance.OpenFile(FileType, resizeImgOtputPath);
result.Content = new StreamContent(stream);
}
else
{
var stream = await XuHos.Common.Storage.Manager.Instance.OpenFile(FileType, fileIndex.FileUrl);
using (ImageMagick.MagickImage image = new ImageMagick.MagickImage(stream))
{
ImageMagick.MagickGeometry size = new ImageMagick.MagickGeometry(ResizeCMD);
image.Resize(size);
var resizeStream = new System.IO.MemoryStream();
image.Write(resizeStream);
await XuHos.Common.Storage.Manager.Instance.WriteFile(FileType, resizeImgOtputPath, resizeStream);
result.Content = new ByteArrayContent(image.ToByteArray());
}
}
}
else
{
var stream = await XuHos.Common.Storage.Manager.Instance.OpenFile(FileType, fileIndex.FileUrl);
result.Content = new StreamContent(stream);
}
#endregion
result.Content.Headers.ContentType = new MediaTypeHeaderValue("Store/octet-stream");
result.Content.Headers.Add("Content-Disposition", "attachment;filename=\"" + HttpUtility.UrlEncode(fileIndex.Remark) + "\"");
result.Headers.ETag = new EntityTagHeaderValue(etag);
result.Headers.CacheControl = new CacheControlHeaderValue();
result.Headers.CacheControl.Public = true;
result.Headers.CacheControl.MaxAge = TimeSpan.FromHours(480);
result.Content.Headers.Expires = DateTimeOffset.Now.AddDays(20);
result.Content.Headers.LastModified = fileIndex.CreateTime;
}
else
{
result.StatusCode = HttpStatusCode.NotFound;
}
#endregion
}
}
else
{
result.StatusCode = HttpStatusCode.NotFound;
}
return result;
}));
}
