/// <summary>
/// 初始化水印的文字和图片信息
/// </summary>
public WaterMarkConfig()
{
if (this.WaterMarkTextInfo == null)
{
this.WaterMarkTextInfo = new WaterMarkText();
}
if (this.WaterMarkImageInfo == null)
{
this.WaterMarkImageInfo = new WaterMarkImage();
}
}
/// <summary>
/// 添加文字水印
/// </summary>
/// <param name="picture">Graphics对象</param>
/// <param name="waterMarkTextInfo">文字水印对象</param>
/// <param name="width">宽度</param>
/// <param name="height">高度</param>
private static void AddWatermarkText(Graphics picture, WaterMarkText waterMarkTextInfo, int width, int height)
{
SizeF ef;
string text = waterMarkTextInfo.Text;
string waterMarkPosition = waterMarkTextInfo.WaterMarkPosition;
int waterMarkPositionX = waterMarkTextInfo.WaterMarkPositionX;
int waterMarkPositionY = waterMarkTextInfo.WaterMarkPositionY;
int foneSize = waterMarkTextInfo.FoneSize;
string foneType = waterMarkTextInfo.FoneType;
string foneStyle = waterMarkTextInfo.FoneStyle;
string foneColor = waterMarkTextInfo.FoneColor;
foneColor = "#" + foneColor.TrimStart('#');
int foneBorder = waterMarkTextInfo.FoneBorder;
string foneBorderColor = waterMarkTextInfo.FoneBorderColor;
foneBorderColor = "#" + foneBorderColor.TrimStart('#');
Font font = null;
string str7 = foneStyle;
if (str7 != null)
{
if (!(str7 == "Bold"))
{
if (str7 == "Italic")
{
font = new Font(foneType, (float)foneSize, FontStyle.Italic);
goto Label_00F9;
}
if (str7 == "Regular")
{
font = new Font(foneType, (float)foneSize, FontStyle.Regular);
goto Label_00F9;
}
if (str7 == "Strikeout")
{
font = new Font(foneType, (float)foneSize, FontStyle.Strikeout);
goto Label_00F9;
}
if (str7 == "Underline")
{
font = new Font(foneType, (float)foneSize, FontStyle.Underline);
goto Label_00F9;
}
}
else
{
font = new Font(foneType, (float)foneSize, FontStyle.Bold);
goto Label_00F9;
}
}
font = new Font(foneType, (float)foneSize, FontStyle.Regular);
Label_00F9:
ef = picture.MeasureString(text, font);
float x = 0f;
float y = 0f;
string str8 = waterMarkPosition;
if (str8 != null)
{
if (!(str8 == "WM_TOP_LEFT"))
{
if (str8 == "WM_TOP_RIGHT")
{
x = (width * 0.99f) - (ef.Width / 2f);
y = height * 0.01f;
}
else if (str8 == "WM_BOTTOM_RIGHT")
{
x = (width * 0.99f) - (ef.Width / 2f);
y = (height * 0.99f) - ef.Height;
}
else if (str8 == "WM_BOTTOM_LEFT")
{
x = (width * 0.01f) + (ef.Width / 2f);
y = (height * 0.99f) - ef.Height;
}
else if (str8 == "WM_SetByManual")
{
x = waterMarkPositionX;
y = waterMarkPositionY;
}
}
else
{
x = (width * 0.01f) + (ef.Width / 2f);
y = height * 0.01f;
}
}
StringFormat format = new StringFormat
{
Alignment = StringAlignment.Center
};
ColorConverter converter = new ColorConverter();
Color color = (Color)converter.ConvertFromString(foneBorderColor);
SolidBrush brush = new SolidBrush(color);
picture.DrawString(text, font, brush, x + foneBorder, y + foneBorder, format);
ColorConverter converter2 = new ColorConverter();
Color color2 = (Color)converter2.ConvertFromString(foneColor);
SolidBrush brush2 = new SolidBrush(color2);
try
{
picture.DrawString(text, font, brush2, x, y, format);
}
catch (ArgumentNullException ex)
{
throw new Exception(ex.Message);
}
finally
{
brush.Dispose();
brush2.Dispose();
format.Dispose();
font.Dispose();
}
}
/// <summary>
/// 添加水印
/// </summary>
/// <param name="originalImagePath">源图相对路径，相对于网站根目录。如：wwwroot/upload/image/a.jpg</param>
public static void AddWaterMark(string originalImagePath)
{
string filename = "";
string extension = Path.GetExtension(originalImagePath);
filename = originalImagePath.Replace(extension, "WaterMark" + extension);
var waterMarkConfig = ConfigHelper.Get <WaterMarkConfig>();
WaterMarkText waterMarkTextInfo = waterMarkConfig.WaterMarkTextInfo;
WaterMarkImage waterMarkImageInfo = waterMarkConfig.WaterMarkImageInfo;
int waterMarkType = waterMarkConfig.WaterMarkType;
float transparence = Convert.ToSingle(waterMarkImageInfo.Transparence) / 100f;
string str5 = FileHelper.MapPath("~/") + Path.DirectorySeparatorChar.ToString();
originalImagePath = str5 + originalImagePath;
filename = str5 + filename;
Image image = null;
try
{
image = Image.FromFile(originalImagePath);
}
catch (FileNotFoundException ex)
{
throw new Exception(ex.Message);
}
Bitmap bitmap = new Bitmap(image.Width, image.Height, PixelFormat.Format24bppRgb);
Graphics picture = Graphics.FromImage(bitmap);
picture.Clear(Color.Green);
picture.SmoothingMode = SmoothingMode.HighQuality;
picture.InterpolationMode = InterpolationMode.High;
picture.DrawImage(image, 0, 0, image.Width, image.Height);
switch (waterMarkType)
{
case 0:
AddWatermarkText(picture, waterMarkTextInfo, image.Width, image.Height);
break;
case 1:
AddWatermarkImage(picture, waterMarkImageInfo, image.Width, image.Height, transparence);
break;
}
try
{
bitmap.Save(filename, ImageFormat.Jpeg);
}
catch (ArgumentNullException ex)
{
throw new Exception(ex.Message);
}
finally
{
bitmap.Dispose();
image.Dispose();
picture.Dispose();
}
FileHelper.Delete(originalImagePath, FileMethod.File);
string newFile = filename.Replace("WaterMark", "");
FileHelper.Move(filename, newFile, FileMethod.File);
}
