/// <summary>
/// 添加水印
/// </summary>
/// <param name="bitmap">原始图片</param>
protected Image WaterMark(Image image, User user)
{
///读取水印配置
CommonConfig.ConfigItem watermarkmodel = CommonConfig.Instance.GetConfig("WaterMark");
if (watermarkmodel != null)
{
if (watermarkmodel.Cate == 1) //判断水印类型
{
//水印图片
Image copyImage = Image.FromFile(System.Web.HttpContext.Current.Server.MapPath(watermarkmodel.ImageUrl));
int width = 0;
int height = 0;
switch (watermarkmodel.Location)
{
case 1: width = 0; height = 0; break; //左上
case 2: width = (image.Width - copyImage.Width) / 2; height = 0; break; //左中
case 3: width = image.Width - copyImage.Width; height = 0; break; //右上
case 4: width = 0; height = (image.Height - copyImage.Height) / 2; break; //左中
case 5: width = (image.Width - copyImage.Width) / 2; height = (image.Height - copyImage.Height) / 2; break; //中中
case 6: width = image.Width - copyImage.Width; height = (image.Height - copyImage.Height) / 2; break; //右中
//case 7: width = 0; height = image.Height - copyImage.Height; break;//左下
case 7: width = 10; height = image.Height - Tools.SafeInt(copyImage.Height * 2); break; //左下
case 8: width = (image.Width - copyImage.Width) / 2; height = image.Height - copyImage.Height; break; //中下
case 9: width = image.Width - copyImage.Width; height = image.Height - copyImage.Height; break; //右下
}
Graphics g = Graphics.FromImage(image);
g.DrawImage(copyImage, new Rectangle(width, height, Convert.ToInt16(watermarkmodel.Width), Convert.ToInt16(watermarkmodel.Height)), 0, 0, copyImage.Width, copyImage.Height, GraphicsUnit.Pixel);
using (Font f = new Font("Verdana", 10))
{
using (Brush b = new SolidBrush(Color.White))
{
g.DrawString((string.IsNullOrWhiteSpace(user.DrawText) ? BaseHelper.FilterEmoji(user.NickName) : user.DrawText), f, b, Tools.SafeInt(watermarkmodel.Width) + 15, image.Height - Tools.SafeInt(copyImage.Height * 2));
g.DrawString("http://www.xiaoweipian.com/u/" + user.Number, f, b, 10, image.Height - copyImage.Height);
}
}
g.Dispose();
copyImage.Dispose();
}
else
{
//文字水印
int width = 0;
int height = 0;
int fontwidth = Convert.ToInt32(watermarkmodel.FontSize * watermarkmodel.Word.Length);
int fontheight = Convert.ToInt32(watermarkmodel.FontSize);
switch (watermarkmodel.Location)
{
case 1: width = 0; height = 0; break;
case 2: width = (image.Width - fontwidth) / 2; height = 0; break;
case 3: width = image.Width - fontwidth; height = 0; break;
case 4: width = 0; height = (image.Height - fontheight) / 2; break;
case 5: width = (image.Width - fontwidth) / 2; height = (image.Height - fontheight) / 2; break;
case 6: width = image.Width - fontwidth; height = (image.Height - fontheight) / 2; break;
case 7: width = 0; height = image.Height - fontheight; break;
case 8: width = (image.Width - fontwidth) / 2; height = image.Height - fontheight; break;
case 9: width = image.Width - fontwidth; height = image.Height - fontheight; break;
}
Graphics g = Graphics.FromImage(image);
g.DrawImage(image, 0, 0, image.Width, image.Height);
Font f = new Font("Verdana", float.Parse(watermarkmodel.FontSize.ToString()));
Brush b = new SolidBrush(Color.White);
g.DrawString(watermarkmodel.Word, f, b, width, height);
g.Dispose();
}
}
return(image);
}