public static MemoryStream DrawImage(Stream imgStream, string text, Font textFont, Color textColor, ContentAlignment alignment, float margin)
{
var stream = new MemoryStream();
using (var img = Image.FromStream(imgStream))
{
GDIHelper.MakeWaterMark(img, text, textFont, textColor, alignment, margin);
img.Save(stream, img.RawFormat);
}
return(stream);
}
public static MemoryStream DrawImage(Stream imgStream, Image waterMarkImage, ContentAlignment alignment, int margin)
{
var stream = new MemoryStream();
using (var img = Image.FromStream(imgStream))
{
GDIHelper.MakeWaterMark(img, waterMarkImage, alignment, margin);
img.Save(stream, img.RawFormat);
}
return(stream);
}
public static string[] SaveImageAs(this HttpPostedFile postedFile, CreateFolderMode mode, WaterMarkInfo waterMarkInfo, params ThumbnailInfo[] thumbnailInfoArray)
{
string[] vrtualFilePaths = new string[1 + thumbnailInfoArray.Length];
byte[] buffer = new byte[postedFile.ContentLength];
postedFile.InputStream.Read(buffer, 0, buffer.Length);
if (FileValidator.ValidateImage(buffer))
{
HttpContext context = HttpContext.Current;
string vitualFilePath, physicalFilePath;
Image image = Image.FromStream(new MemoryStream(buffer));
if (image.RawFormat.Guid == ImageFormat.Gif.Guid)
{
vitualFilePath = GetFilePath(postedFile, ref mode, waterMarkInfo.SavePath);
physicalFilePath = context.Server.MapPath(vitualFilePath);
image.Save(physicalFilePath);
if (waterMarkInfo.Mode != WaterMarkInfo.ExecuteMode.Skip)
{
if (waterMarkInfo.Mode == WaterMarkInfo.ExecuteMode.Image)
{
using (Bitmap waterImg = waterMarkInfo.GetImage())
{
float x = image.Width - waterImg.Width - 24F, y = image.Height - waterImg.Height - 24F;
GifHelper.WaterMark(physicalFilePath, waterImg, x, y, physicalFilePath);
}
}
else
{
float x = image.Width - waterMarkInfo.TextSize - 24F, y = image.Height - waterMarkInfo.TextSize - 24F;
GifHelper.SmartWaterMark(physicalFilePath, waterMarkInfo.Text, ColorTranslator.FromHtml(waterMarkInfo.TextColor), new Font("宋体", waterMarkInfo.TextSize), x, y, physicalFilePath);
}
vrtualFilePaths[0] = vitualFilePath;
}
string srcPhysicalFilePath = physicalFilePath;
for (int i = 0; i < thumbnailInfoArray.Length;)
{
ThumbnailInfo thumbnailInfo = thumbnailInfoArray[i];
vitualFilePath = GetFilePath(postedFile, ref mode, thumbnailInfo.SavePath);
physicalFilePath = context.Server.MapPath(vitualFilePath);
SizeF size = GDIHelper.GetProportionSize(new SizeF(thumbnailInfo.Width, thumbnailInfo.Height), image.Size);
GifHelper.GetThumbnail(srcPhysicalFilePath, (double)size.Width / (double)image.Width, physicalFilePath);
vrtualFilePaths[++i] = vitualFilePath;
}
}
else
{
if (waterMarkInfo.Mode != WaterMarkInfo.ExecuteMode.Skip)
{
vitualFilePath = GetFilePath(postedFile, ref mode, waterMarkInfo.SavePath);
physicalFilePath = context.Server.MapPath(vitualFilePath);
if (waterMarkInfo.Mode == WaterMarkInfo.ExecuteMode.Image)
{
using (Bitmap waterImg = waterMarkInfo.GetImage())
{
GDIHelper.MakeWaterMark(image, waterImg, ContentAlignment.BottomRight, 24);
}
}
else
{
GDIHelper.MakeWaterMark(image, waterMarkInfo.Text, new Font("宋体", waterMarkInfo.TextSize), ColorTranslator.FromHtml(waterMarkInfo.TextColor), ContentAlignment.BottomRight, 24);
}
image.Save(physicalFilePath);
vrtualFilePaths[0] = vitualFilePath;
}
for (int i = 0; i < thumbnailInfoArray.Length;)
{
ThumbnailInfo thumbnailInfo = thumbnailInfoArray[i];
vitualFilePath = GetFilePath(postedFile, ref mode, thumbnailInfo.SavePath);
physicalFilePath = context.Server.MapPath(vitualFilePath);
Bitmap thumbnailImg = GDIHelper.GetThumbnailImage(image, new SizeF(thumbnailInfo.Width, thumbnailInfo.Height), thumbnailInfo.Mode);
thumbnailImg.Save(physicalFilePath);
vrtualFilePaths[++i] = vitualFilePath;
}
}
image.Dispose();
}
return(vrtualFilePaths);
}