public static Image GetThumbNailImage(Image originalImage, int thumMaxWidth, int thumMaxHeight)
{
Size empty = Size.Empty;
Image image = originalImage;
Graphics graphics = (Graphics)null;
try
{
Size newSize = ImgHelper.GetNewSize(thumMaxWidth, thumMaxHeight, originalImage.Width, originalImage.Height);
image = (Image) new Bitmap(newSize.Width, newSize.Height);
graphics = Graphics.FromImage(image);
graphics.DrawImage(originalImage, new Rectangle(0, 0, newSize.Width, newSize.Height), new Rectangle(0, 0, originalImage.Width, originalImage.Height), GraphicsUnit.Pixel);
}
catch
{
}
finally
{
graphics?.Dispose();
}
return(image);
}
public static string CutAvatar(string imgUrl, string newImgUrl, int pointX = 0, int pointY = 0, int width = 0, int height = 0)
{
Bitmap bitmap = (Bitmap)null;
Image image1 = (Image)null;
Graphics graphics = (Graphics)null;
Image image2 = (Image)null;
try
{
int thumMaxWidth = 180;
int thumMaxHeight = 180;
if (string.IsNullOrEmpty(imgUrl))
{
return("");
}
bitmap = new Bitmap(width, height);
image1 = Image.FromFile(imgUrl);
graphics = Graphics.FromImage((Image)bitmap);
graphics.DrawImage(image1, new Rectangle(0, 0, width, height), new Rectangle(pointX, pointY, width, height), GraphicsUnit.Pixel);
image2 = ImgHelper.GetThumbNailImage((Image)bitmap, thumMaxWidth, thumMaxHeight);
EncoderParameters encoderParams = new EncoderParameters();
long[] numArray = new long[1] {
80L
};
EncoderParameter encoderParameter = new EncoderParameter(Encoder.Quality, numArray);
encoderParams.Param[0] = encoderParameter;
ImageCodecInfo[] imageEncoders = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo encoder = (ImageCodecInfo)null;
for (int index = 0; index < imageEncoders.Length; ++index)
{
if (imageEncoders[index].FormatDescription.Equals("JPEG"))
{
encoder = imageEncoders[index];
break;
}
}
string path1 = newImgUrl;
string filename = HttpContext.Current.Server.MapPath(path1);
string path2 = filename.Substring(0, filename.LastIndexOf("\\"));
if (!Directory.Exists(path2))
{
Directory.CreateDirectory(path2);
}
if (encoder != null)
{
image2.Save(filename, encoder, encoderParams);
}
else
{
image2.Save(filename);
}
return(path1);
}
catch (Exception ex)
{
return("");
}
finally
{
bitmap.Dispose();
image1.Dispose();
graphics.Dispose();
image2.Dispose();
GC.Collect();
}
}
