/// 给图片加水印 中国红木网
/// </summary>
/// <param name="originalImg"></param>
/// <param name="waterImg"></param>
/// <param name="trbl"></param>
/// <returns></returns>
public static Image WatermarkImage(Image originalImg, Image waterImg, WatermarkTRBL trbl)
{
Image image = (Image)originalImg.Clone();
using (Graphics g = Graphics.FromImage(image))
{
Rectangle r = new Rectangle();
r.Height = waterImg.Height;
r.Width = waterImg.Width;
if (trbl.Top != null)
{
r.Y = (int)trbl.Top;
}
if (trbl.Right != null)
{
r.X = originalImg.Width - waterImg.Width - (int)trbl.Right;
}
if (trbl.Bottom != null)
{
r.Y = originalImg.Height - waterImg.Height - (int)trbl.Bottom;
}
if (trbl.Left != null)
{
r.X = (int)trbl.Left;
}
g.DrawImage(waterImg, r, 0, 0, waterImg.Width, waterImg.Height, GraphicsUnit.Pixel);
}
return image;
}
Bitmap b = new Bitmap(image.Width,
image.Height,PixelFormat.Format24bppRgb);
Graphics g =
Graphics.FromImage(b);
g.Clear(Color.White);
g.SmoothingMode =
System.Drawing.Drawing2D.SmoothingMode.Default;
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.Default;
g.DrawImage(image, 0, 0, image.Width, image.Height);
高质量 用普通模式