private static void SaveWaterPic(string sUploadPathAndFileName, WaterPositionOptions position)
{
sUploadPathAndFileName = HttpContext.Current.Server.MapPath(sUploadPathAndFileName);
Image image = Image.FromFile(sUploadPathAndFileName);
Bitmap bitmap = new Bitmap(image.Width, image.Height);
Graphics g = Graphics.FromImage(bitmap);
g.DrawImage(image, new Point(0, 0));
Image waterImage = GetWaterMarkImage();
WaterPosition waterPosition = GetWaterPosition(image.Width, image.Height, waterImage.Width, waterImage.Height, position);
//打水印
g.DrawImage(waterImage, new Rectangle((int)waterPosition.X, (int)waterPosition.Y, waterImage.Width, waterImage.Height), 0, 0, waterImage.Width, waterImage.Height, System.Drawing.GraphicsUnit.Pixel);
image.Dispose();
waterImage.Dispose();
bitmap.Save(sUploadPathAndFileName);
bitmap.Dispose();
g.Dispose();
}
private static WaterPosition GetWaterPosition(float width, float height, float waterMarkWidth, float waterMarkHeight, WaterPositionOptions position)
{
WaterPosition position2 = new WaterPosition();
switch (position)
{
case WaterPositionOptions.LeftTop:
position2.X = 0f;
position2.Y = 0f;
break;
case WaterPositionOptions.RightTop:
position2.X = width - waterMarkWidth;
position2.Y = 0f;
break;
case WaterPositionOptions.Middle:
position2.X = ((float)(width - waterMarkWidth)) / 2f;
position2.Y = ((float)(height - waterMarkHeight)) / 2f;
break;
case WaterPositionOptions.LeftBottom:
position2.X = 0f;
position2.Y = height - waterMarkHeight;
break;
case WaterPositionOptions.RightBottom:
position2.X = width - waterMarkWidth;
position2.Y = height - waterMarkHeight;
break;
}
return(position2);
}
/// <summary>
/// 上传图片打水印并生成缩略图(缩略图名称前加小写的英文字母“s”)并且按照最大宽度缩略
/// </summary>
/// <param name="bytes">文件字节数组</param>
/// <param name="sUploadPathAndFileName">保存相对路径及文件名</param>
/// <param name="nMaxSize">最大尺寸(根据MaxMode方式选择宽或高缩略)</param>
/// <param name="MaxMode">缩略图生成方式（ThumbnailMode.W或者ThumbnailMode.H）</param>
/// <param name="position">水印图片坐标位置</param>
/// <param name="nWidth">缩略图宽</param>
/// <param name="nHeight">缩略图高</param>
/// <param name="mode">缩略图方式</param>
/// <returns></returns>
public static bool UploadPicFileClipByMaxSize(byte[] bytes, string sUploadPathAndFileName, int nMaxSize, ThumbnailMode MaxMode, WaterPositionOptions position, int nWidth, int nHeight, ThumbnailMode mode)
{
try
{
if (UploadFile(bytes, sUploadPathAndFileName))
{
SaveThumbnailPic(sUploadPathAndFileName, Path.GetDirectoryName(sUploadPathAndFileName) + "/s" + Path.GetFileName(sUploadPathAndFileName), nWidth, nHeight, mode);
SaveThumbnailPic(sUploadPathAndFileName, sUploadPathAndFileName, nMaxSize, nMaxSize, MaxMode);
SaveWaterPic(sUploadPathAndFileName, position);
return(true);
}
return(false);
}
catch
{
return(false);
}
}
/// <summary>
/// 上传图片打水印
/// </summary>
/// <param name="bytes">文件字节数组</param>
/// <param name="sUploadPathAndFileName">保存相对路径及文件名</param>
/// <param name="position">水印图片坐标位置</param>
/// <returns></returns>
public static bool UploadPicFileToWater(byte[] bytes, string sUploadPathAndFileName, WaterPositionOptions position)
{
try
{
if (UploadFile(bytes, sUploadPathAndFileName))
{
SaveWaterPic(sUploadPathAndFileName, position);
return(true);
}
return(false);
}
catch
{
return(false);
}
}
/// <summary>
/// 上传图片打水印并生成缩略图(缩略图名称前加小写的英文字母“s”)并且按照最大宽度缩略
/// </summary>
/// <param name="postedFile">文件流</param>
/// <param name="sUploadPathAndFileName">保存相对路径及文件名</param>
/// <param name="nMaxSize">最大尺寸(根据MaxMode方式选择宽或高缩略)</param>
/// <param name="MaxMode">缩略图生成方式（ThumbnailMode.W或者ThumbnailMode.H）</param>
/// <param name="position">水印图片坐标位置</param>
/// <param name="nWidth">缩略图宽</param>
/// <param name="nHeight">缩略图高</param>
/// <param name="mode">缩略图方式</param>
/// <returns></returns>
public static bool UploadPicFileClipByMaxSize(HttpPostedFile postedFile, string sUploadPathAndFileName, int nMaxSize, ThumbnailMode MaxMode, WaterPositionOptions position, int nWidth, int nHeight, ThumbnailMode mode)
{
try
{
byte[] bytes = GetUploadBytes(postedFile);
return(UploadPicFileClipByMaxSize(bytes, sUploadPathAndFileName, nMaxSize, MaxMode, position, nWidth, nHeight, mode));
}
catch
{
return(false);
}
}
/// <summary>
/// 上传图片打水印
/// </summary>
/// <param name="postedFile">文件流</param>
/// <param name="sUploadPathAndFileName">保存相对路径及文件名</param>
/// <param name="position">水印图片坐标位置</param>
/// <returns></returns>
public static bool UploadPicFileToWater(HttpPostedFile postedFile, string sUploadPathAndFileName, WaterPositionOptions position)
{
try
{
byte[] bytes = GetUploadBytes(postedFile);
return(UploadPicFileToWater(bytes, sUploadPathAndFileName, position));
}
catch
{
return(false);
}
}
