public as_images GetImage(int id)
{
var res = new as_images();
res = db.as_images.FirstOrDefault(x => x.id == id);
return(res);
}
public int SaveImage(as_images item)
{
try
{
if (item.id == 0)
{
db.as_images.Add(item);
db.SaveChanges();
}
else
{
try
{
db.Entry(item).State = EntityState.Modified;
db.SaveChanges();
}
catch (OptimisticConcurrencyException ex)
{
RDL.Debug.LogError(ex);
}
}
CacheManager.PurgeCacheItems("as_images_" + item.typeCode + "_" + item.itemID);
}
catch (Exception ex)
{
RDL.Debug.LogError(ex);
}
return(item.id);
}
public string GetImageFolderLink(as_images item)
{
string res = "";
res = string.Format("/uploads/images/{0}/{1}/", item.typeCode, item.itemID);
return(res);
}
public string GetImageLink(as_images item, bool isThumb = false)
{
string res = "";
res = string.Format("{0}/{1}{2}{3}", GetImageFolderLink(item), Path.GetFileNameWithoutExtension(item.filename), isThumb ? "_thumb": "", Path.GetExtension(item.filename));
return(res);
}
public ActionResult Upload()
{
int itemID = RDL.Convert.StrToInt(HttpContext.Request.Form["itemID"].ToString(), 0);
string code = HttpContext.Request.Form["code"].ToString();
int thumbWidth = RDL.Convert.StrToInt(HttpContext.Request.Form["thumbWidth"].ToString(), 0);
int thumbHeight = RDL.Convert.StrToInt(HttpContext.Request.Form["thumbHeight"].ToString(), 0);
var mng = new ImagesManager();
var context = HttpContext;
try
{
var file = context.Request.Files["Filedata"];
if (itemID == 0)
{
return(Content("0"));
}
if (file != null)
{
var item = new as_images {
ord = 20000, itemID = itemID, filename = file.FileName, id = 0, description = "", name = "", url = "", typeCode = code
};
int id = mng.SaveImage(item);
if (file.ContentType.ToLower() == "image/jpeg" || file.ContentType.ToLower() == "image/jpg" ||
file.ContentType.ToLower() == "image/gif" || file.ContentType.ToLower() == "image/png" ||
file.ContentType.ToLower() == "application/octet-stream")
{
System.Drawing.Image img = System.Drawing.Image.FromStream(file.InputStream);
mng.UploadImage(item, img, thumbWidth, thumbHeight, file.ContentType.ToLower());
}
}
return(Content("1"));
}
catch (Exception ex)
{
RDL.Debug.LogError(ex);
}
return(Content("0"));
}
internal void UploadImage(as_images item, System.Drawing.Image img, int thumbWidth, int thumbHeight, string contentType = "image/jpeg")
{
try
{
var folderPath = HttpContext.Current.Server.MapPath(GetImageFolderLink(item));
if (!Directory.Exists(folderPath))
{
Directory.CreateDirectory(folderPath);
}
System.Drawing.Image origin = img;
string thumbPath = HttpContext.Current.Server.MapPath(GetImageLink(item, true));
Bitmap thumbBitmap;
Graphics originF;
if (thumbWidth > 0 && thumbHeight > 0)
{
// создаем превью
int ow = thumbWidth; // ширина картинки
int oh = thumbHeight; // высота картинки
float prop = System.Convert.ToSingle(origin.Width) / System.Convert.ToSingle(origin.Height);
float normalprop = System.Convert.ToSingle(ow) / System.Convert.ToSingle(oh);
if (prop > normalprop)// если по ширине длиннее
{
int hh = oh;
int ww = System.Convert.ToInt32(hh * prop);
thumbBitmap = new Bitmap(ow, oh);
originF = Graphics.FromImage(thumbBitmap);
originF.InterpolationMode = InterpolationMode.HighQualityBicubic;
originF.PixelOffsetMode = PixelOffsetMode.HighQuality;
// размер ow х hh
SolidBrush brush31 = new SolidBrush(Color.White);
Rectangle rect31 = new Rectangle(0, 0, ww, hh);
originF.FillRectangle(brush31, rect31);
originF.DrawImage(origin, 0, 0, ww, hh);
}
else
{
int ww = ow;
int hh = System.Convert.ToInt32(ww / prop);
thumbBitmap = new Bitmap(ow, oh);
originF = Graphics.FromImage(thumbBitmap);
originF.InterpolationMode = InterpolationMode.HighQualityBicubic;
originF.PixelOffsetMode = PixelOffsetMode.HighQuality;
// размер ow х hh
// рисуем белый фон
SolidBrush brush31 = new SolidBrush(Color.White);
Rectangle rect31 = new Rectangle(0, 0, ww, hh);
originF.FillRectangle(brush31, rect31);
originF.DrawImage(origin, 0, 0, ww, hh);
}
EncoderParameters ep = new EncoderParameters(1);
ImageCodecInfo icJPG = getCodecInfo(contentType);
ep.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, (long)100);
thumbBitmap.Save(thumbPath, icJPG, ep);
originF.Dispose();
thumbBitmap.Dispose();
}
// создаем оригинальный
var originPath = HttpContext.Current.Server.MapPath(GetImageLink(item));
Bitmap originBitmap;
var ep1 = new EncoderParameters(1);
var icJPG1 = getCodecInfo(contentType); // getCodecInfo - функция, см. выше
ep1.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, (long)100); // качество
originBitmap = new Bitmap(img);
originBitmap.Save(originPath, icJPG1, ep1);
origin.Dispose();
originBitmap.Dispose();
}
catch (Exception ex)
{
RDL.Debug.LogError(ex);
}
}
