public void AddImageWatermarkWithSpecificOptions()
{
//ExStart:AddImageWatermarkWithSpecificOptions
Document doc = new Document(MyDir + "Document.docx");
ImageWatermarkOptions options = new ImageWatermarkOptions
{
Scale = 5,
IsWashout = false
};
doc.Watermark.SetImage(Image.FromFile(ImagesDir + "Transparent background logo.png"), options);
doc.Save(ArtifactsDir + "WorkWithWatermark.AddImageWatermark.docx");
//ExEnd:AddImageWatermarkWithSpecificOptions
}
public static void AddImageWatermarkWithSpecificOptions(string dataDir)
{
// ExStart: AddImageWatermarkWithSpecificOptions
Document doc = new Document(dataDir + "Document.doc");
ImageWatermarkOptions options = new ImageWatermarkOptions()
{
Scale = 5,
IsWashout = false
};
doc.Watermark.SetImage(Image.FromFile(dataDir + "Watermark.png"), options);
doc.Save(dataDir + "AddImageWatermark_out.docx");
// ExEnd: AddImageWatermarkWithSpecificOptions
Console.WriteLine("\nDocument saved successfully.\nFile saved at " + dataDir);
}
static void CreateImageWatermark(Document document)
{
#region #CreateImageWatermark
//Check whether the document sections have headers:
foreach (Section section in document.Sections)
{
if (!section.HasHeader(HeaderFooterType.Primary))
{
//If not, create an empty header
SubDocument header = section.BeginUpdateHeader();
section.EndUpdateHeader(header);
}
}
ImageWatermarkOptions imageWatermarkOptions = new ImageWatermarkOptions();
imageWatermarkOptions.Washout = false;
imageWatermarkOptions.Scale = 2;
document.WatermarkManager.SetImage(System.Drawing.Image.FromFile("Documents//DevExpress.png"), imageWatermarkOptions);
#endregion #CreateImageWatermark
}
/// <summary>
/// 上传图片
/// </summary>
/// <param name="file"></param>
/// <param name="imagePath"></param>
/// <param name="webRootPath"></param>
/// <param name="filename"></param>
/// <param name="useWatermark">是否使用水印，默认不启用</param>
/// <param name="watermarkType">水印类型，txt：文字；img：图片水印</param>
/// <param name="watermarkText">文字水印内容</param>
/// <returns></returns>
public static async System.Threading.Tasks.Task <string> UploadFile(IFormFile file, string imagePath, string webRootPath, string filename = "",
bool useWatermark = false, string watermarkType = "txt", string watermarkText = "")
{
if (string.IsNullOrWhiteSpace(filename))
{
filename = DateTime.Now.Ticks.ToString();
}
string suffix = file.FileName.Substring(file.FileName.LastIndexOf('.'));
string savePath = imagePath + filename + suffix;
if (!Directory.Exists(webRootPath + imagePath))
{
Directory.CreateDirectory(webRootPath + imagePath);
}
using (FileStream fs = new FileStream(webRootPath + savePath, FileMode.Create))
{
await file.CopyToAsync(fs);
if (useWatermark)
{
savePath = imagePath + "watermark/" + filename + suffix;
if (!Directory.Exists(webRootPath + imagePath + "watermark"))
{
Directory.CreateDirectory(webRootPath + imagePath + "watermark");
}
switch (watermarkType)
{
case "txt": // 文字水印
{
using (var img = Image.FromStream(fs))
{
var iOps = new TextWatermarkOptions
{
TextColor = Color.FromArgb(100, Color.White),
Location = TargetSpot.TopLeft,
FontName = "微软雅黑",
FontStyle = FontStyle.Bold,
FontSize = 12
};
img.AddTextWatermark(watermarkText, iOps)
.SaveAs($@"{webRootPath}{imagePath}watermark/{filename}{suffix}"); // 保存水印
}
}
break;
case "img":
{
using (var img = Image.FromStream(fs))
{
var iOps = new ImageWatermarkOptions
{
Location = TargetSpot.TopLeft
};
string watermarkPath = $"{ webRootPath }/Image/watermark.png";
var waterImg = Image.FromFile(watermarkPath);
var tmpImg = waterImg.Scale(img.Width / 2, img.Height / 2);
var waterImgPath = $@"{webRootPath}{imagePath}watermark/{filename}{suffix}";
img.AddImageWatermark(tmpImg, iOps)
.SaveAs(waterImgPath); // 保存水印
waterImg.Dispose();
}
}
break;
}
}
}
return(savePath);
}
