/// <summary>
/// Searches for watermark with combination of different search criterias
/// </summary>
public static void SearchWatermarkWithCombinedSearch()
{
try
{
//ExStart:SearchWatermarkWithCombinedSearch
using (Document doc = Document.Load(Utilities.MapSourceFilePath(DOC_FILE_PATH)))
{
ImageSearchCriteria imageSearchCriteria = new ImageDctHashSearchCriteria(@"D:\logo.png");
imageSearchCriteria.MaxDifference = 0.9;
TextSearchCriteria textSearchCriteria = new TextSearchCriteria("Company Name");
RotateAngleSearchCriteria rotateAngleSearchCriteria = new RotateAngleSearchCriteria(30, 60);
SearchCriteria combinedSearchCriteria = imageSearchCriteria.Or(textSearchCriteria).And(rotateAngleSearchCriteria);
PossibleWatermarkCollection possibleWatermarks = doc.FindWatermarks(combinedSearchCriteria);
// ...
}
//ExEnd:SearchWatermarkWithCombinedSearch
}
catch (Exception exp)
{
Console.Write(exp.Message);
}
}
/// <summary>
/// Replaces image in the found watermarks
/// </summary>
public static void ReplacesImageInFoundWatermarks()
{
try
{
//ExStart:ReplacesImageInFoundWatermarks_18.3
byte[] imageData = File.ReadAllBytes(Utilities.MapSourceFilePath(PNG_FILE_PATH));
using (Document doc = Document.Load(Utilities.MapSourceFilePath(PDF_FILE_PATH)))
{
// Search watermark matching a particular image
SearchCriteria searchCriteria = new ImageDctHashSearchCriteria(@"D:\logo.bmp");
PossibleWatermarkCollection watermarks = doc.FindWatermarks(searchCriteria);
foreach (PossibleWatermark watermark in watermarks)
{
try
{
// Replace image
watermark.ImageData = imageData;
}
catch (Exception e)
{
// Found entity may not support image replacment
// Passed image can have inappropriate format
// Process such cases here
}
}
// Save document
doc.Save();
}
//ExEnd:ReplacesImageInFoundWatermarks_18.3
}
catch (Exception exp)
{
Console.Write(exp.Message);
}
}
/// <summary>
/// Removes old company logo added as watermark from all the documents in a folder
/// </summary>
public static void RemoveCompanyLogoWatermarkFromDocuments()
{
try
{
//ExStart:RemoveCompanyLogoWatermarkFromDocuments
var inputFolder = SourceFolderPath;
var outputFolder = SourceFolderPath + "/output";
var logo = @"D:\logo.png";
var files = Directory.GetFiles(inputFolder);
ImageSearchCriteria imageSearchCriteria = new ImageDctHashSearchCriteria(logo);
var regex = new Regex(@"^Company\sName$", RegexOptions.IgnoreCase);
TextSearchCriteria textSearchCriteria = new TextSearchCriteria(regex);
foreach (var file in files)
{
try
{
using (var doc = Document.Load(file))
{
var watermarks = doc.FindWatermarks(textSearchCriteria.Or(imageSearchCriteria));
watermarks.Clear();
doc.Save(Path.Combine(outputFolder, Path.GetFileName(file)));
}
}
catch (UnsupportedFileTypeException)
{
Console.WriteLine("File format is not supported. File = {0}", Path.GetFileName(file));
}
}
//ExEnd:RemoveCompanyLogoWatermarkFromDocuments
}
catch (Exception exp)
{
Console.Write(exp.Message);
}
}
/// <summary>
/// Searches for image watermark
/// </summary>
public static void SearchImageWatermark()
{
try
{
//ExStart:SearchImageWatermark
using (Document doc = Document.Load(Utilities.MapSourceFilePath(PPT_FILE_PATH)))
{
// Initialize criteria with the image
ImageSearchCriteria imageSearchCriteria = new ImageDctHashSearchCriteria(@"D:\watermark.jpg");
//Set maximum allowed difference between images
imageSearchCriteria.MaxDifference = 0.9;
PossibleWatermarkCollection possibleWatermarks = doc.FindWatermarks(imageSearchCriteria);
// ...
}
//ExEnd:SearchImageWatermark
}
catch (Exception exp)
{
Console.Write(exp.Message);
}
}
