public static void PopulateOperators(PdfContentStreamProcessor contentProcessor,
PdfCleanUpRenderListener pdfCleanUpRenderListener) {
foreach (String oper in contentProcessor.RegisteredOperatorStrings) {
PdfCleanUpContentOperator contentOperator = new PdfCleanUpContentOperator(pdfCleanUpRenderListener);
contentOperator.originalContentOperator = contentProcessor.RegisterContentOperator(oper, contentOperator);
}
}
public static void PopulateOperators(PdfContentStreamProcessor contentProcessor,
PdfCleanUpRenderListener pdfCleanUpRenderListener)
{
foreach (String oper in contentProcessor.RegisteredOperatorStrings)
{
PdfCleanUpContentOperator contentOperator = new PdfCleanUpContentOperator(pdfCleanUpRenderListener);
contentOperator.originalContentOperator = contentProcessor.RegisterContentOperator(oper, contentOperator);
}
}
public static void PopulateOperators(PdfContentStreamProcessor contentProcessor,
PdfCleanUpRenderListener pdfCleanUpRenderListener)
{
String[] operators = new String[] {
PdfContentStreamProcessor.DEFAULTOPERATOR, "q", "Q", "g", "G", "rg", "RG", "k", "K",
"cs", "CS", "sc", "SC", "scn", "SCN", "cm", "gs", "Tc", "Tw", "Tz", "TL", "Tf", "Tr",
"Ts", "BT", "ET", "BMC", "BDC", "EMC", "Td", "TD", "Tm", "T*", "Tj", "'", "\"", "TJ", "Do"
};
foreach (String @operator in operators)
{
PdfCleanUpContentOperator contentOperator = new PdfCleanUpContentOperator(pdfCleanUpRenderListener);
contentOperator.originalContentOperator = contentProcessor.RegisterContentOperator(@operator, contentOperator);
}
}
private void CleanUpPage(int pageNum, IList <PdfCleanUpLocation> cleanUpLocations)
{
if (cleanUpLocations.Count == 0)
{
return;
}
PdfReader pdfReader = pdfStamper.Reader;
PdfDictionary page = pdfReader.GetPageN(pageNum);
PdfContentByte canvas = pdfStamper.GetUnderContent(pageNum);
byte[] pageContentInput = ContentByteUtils.GetContentBytesForPage(pdfReader, pageNum);
page.Remove(PdfName.CONTENTS);
canvas.SaveState();
PdfCleanUpRegionFilter filter = CreateFilter(cleanUpLocations);
PdfCleanUpRenderListener pdfCleanUpRenderListener = new PdfCleanUpRenderListener(pdfStamper, filter);
pdfCleanUpRenderListener.RegisterNewContext(pdfReader.GetPageResources(page), canvas);
PdfContentStreamProcessor contentProcessor = new PdfContentStreamProcessor(pdfCleanUpRenderListener);
PdfCleanUpContentOperator.PopulateOperators(contentProcessor, pdfCleanUpRenderListener);
contentProcessor.ProcessContent(pageContentInput, page.GetAsDict(PdfName.RESOURCES));
pdfCleanUpRenderListener.PopContext();
canvas.RestoreState();
ColorCleanedLocations(canvas, cleanUpLocations);
if (redactAnnotIndirRefs != null) // if it isn't null, then we are in "extract locations from redact annots" mode
{
DeleteRedactAnnots(pageNum);
}
}
private void CleanUpPage(int pageNum, IList<PdfCleanUpLocation> cleanUpLocations) {
if (cleanUpLocations.Count == 0) {
return;
}
PdfReader pdfReader = pdfStamper.Reader;
PdfDictionary page = pdfReader.GetPageN(pageNum);
PdfContentByte canvas = pdfStamper.GetUnderContent(pageNum);
byte[] pageContentInput = ContentByteUtils.GetContentBytesForPage(pdfReader, pageNum);
page.Remove(PdfName.CONTENTS);
canvas.SaveState();
PdfCleanUpRegionFilter filter = CreateFilter(cleanUpLocations);
PdfCleanUpRenderListener pdfCleanUpRenderListener = new PdfCleanUpRenderListener(pdfStamper, filter);
pdfCleanUpRenderListener.RegisterNewContext(pdfReader.GetPageResources(page), canvas);
PdfContentStreamProcessor contentProcessor = new PdfContentStreamProcessor(pdfCleanUpRenderListener);
PdfCleanUpContentOperator.PopulateOperators(contentProcessor, pdfCleanUpRenderListener);
contentProcessor.ProcessContent(pageContentInput, page.GetAsDict(PdfName.RESOURCES));
pdfCleanUpRenderListener.PopContext();
canvas.RestoreState();
ColorCleanedLocations(canvas, cleanUpLocations);
if (redactAnnotIndirRefs != null) { // if it isn't null, then we are in "extract locations from redact annots" mode
DeleteRedactAnnots(pageNum);
}
}
public PdfCleanUpContentOperator(PdfCleanUpRenderListener cleanUpStrategy)
{
this.cleanUpStrategy = cleanUpStrategy;
}
public PdfCleanUpContentOperator(PdfCleanUpRenderListener cleanUpStrategy) {
this.cleanUpStrategy = cleanUpStrategy;
}
