/// <summary>
/// 添加水印(分图片水印与文字水印两种)
/// </summary>
/// <param name="oldpath">原图片绝对地址</param>
/// <param name="newpath">新图片放置的绝对地址</param>
/// <param name="wmpPosition">要添加的水印的位置</param>
/// <param name="wmtType">要添加的水印的类型</param>
/// <param name="sWaterMarkContent">水印内容，若添加文字水印，此即为要添加的文字；
/// 若要添加图片水印，此为图片的路径</param>
public void addWaterMark(string oldpath, string newpath, WaterMarkPosition wmpPosition,
WaterMarkType wmtType, string sWaterMarkContent)
{
try
{
Image image = Image.FromFile(oldpath);
Bitmap b = new Bitmap(image.Width, image.Height,
PixelFormat.Format24bppRgb);
Graphics g = Graphics.FromImage(b);
g.Clear(Color.White);
g.SmoothingMode = SmoothingMode.HighQuality;
g.InterpolationMode = InterpolationMode.High;
g.DrawImage(image, 0, 0, image.Width, image.Height);
switch (wmtType)
{
case WaterMarkType.TextMark:
//文字水印
this.addWatermarkText(g, sWaterMarkContent, wmpPosition.ToString(),
image.Width, image.Height);
break;
case WaterMarkType.ImageMark:
//图片水印
Image imageWatermark = Image.FromFile(sWaterMarkContent);
this.addWatermarkImage(g, imageWatermark, wmpPosition.ToString(), image.Width, image.Height);
break;
}
b.Save(newpath);
b.Dispose();
image.Dispose();
}
catch
{
if (File.Exists(oldpath))
{
//File.Delete(oldpath);
}
}
finally
{
if (File.Exists(oldpath))
{
//File.Delete(oldpath);
}
}
}
