| public RegisterContentOperator ( String operatorString, IContentOperator oper ) : IContentOperator | ||
| operatorString | String | |
| oper | IContentOperator | |
| return | IContentOperator | |
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);
}
}
/**
* Processes content from the specified page number using the specified listener.
* Also allows registration of custom ContentOperators
* @param <E> the type of the renderListener - this makes it easy to chain calls
* @param pageNumber the page number to process
* @param renderListener the listener that will receive render callbacks
* @param additionalContentOperators an optional dictionary of custom IContentOperators for rendering instructions
* @return the provided renderListener
* @throws IOException if operations on the reader fail
*/
public virtual E ProcessContent <E>(int pageNumber, E renderListener, IDictionary <string, IContentOperator> additionalContentOperators) where E : IRenderListener
{
PdfDictionary pageDic = reader.GetPageN(pageNumber);
PdfDictionary resourcesDic = pageDic.GetAsDict(PdfName.RESOURCES);
PdfContentStreamProcessor processor = new PdfContentStreamProcessor(renderListener);
foreach (KeyValuePair <string, IContentOperator> entry in additionalContentOperators)
{
processor.RegisterContentOperator(entry.Key, entry.Value);
}
processor.ProcessContent(ContentByteUtils.GetContentBytesForPage(reader, pageNumber), resourcesDic);
return(renderListener);
}
