Class PdfContentStreamProcessor

java.lang.Object
com.itextpdf.text.pdf.parser.PdfContentStreamProcessor
public class PdfContentStreamProcessor extends Object
Processor for a PDF content Stream.
Since:
2.1.4

  • Field Details

  • Constructor Details

    • PdfContentStreamProcessor

      public PdfContentStreamProcessor(RenderListener renderListener)
      Creates a new PDF Content Stream Processor that will send it's output to the designated render listener.
      Parameters:
      renderListener - the RenderListener that will receive rendering notifications

  • Method Details

    • registerXObjectDoHandler

      public XObjectDoHandler registerXObjectDoHandler(PdfName xobjectSubType, XObjectDoHandler handler)
      Registers a Do handler that will be called when Do for the provided XObject subtype is encountered during content processing.
      If you register a handler, it is a very good idea to pass the call on to the existing registered handler (returned by this call), otherwise you may inadvertently change the internal behavior of the processor.
      Parameters:
      xobjectSubType - the XObject subtype this handler will process, or PdfName.DEFAULT for a catch-all handler
      handler - the handler that will receive notification when the Do operator for the specified subtype is encountered
      Returns:
      the existing registered handler, if any
      Since:
      5.0.1

    • registerContentOperator

      public ContentOperator registerContentOperator(String operatorString, ContentOperator operator)
      Registers a content operator that will be called when the specified operator string is encountered during content processing.
      If you register an operator, it is a very good idea to pass the call on to the existing registered operator (returned by this call), otherwise you may inadvertently change the internal behavior of the processor.
      Parameters:
      operatorString - the operator id, or DEFAULTOPERATOR for a catch-all operator
      operator - the operator that will receive notification when the operator is encountered
      Returns:
      the existing registered operator, if any
      Since:
      2.1.7

    • getRegisteredOperatorStrings

      public Collection<String> getRegisteredOperatorStrings()
      Returns:
      Collection containing all the registered operators strings
      Since:
      5.5.6

    • reset

      public void reset()
      Resets the graphics state stack, matrices and resources.

    • gs

      public GraphicsState gs()
      Returns the current graphics state.
      Returns:
      the graphics state

    • processContent

      public void processContent(byte[] contentBytes, PdfDictionary resources)
      Processes PDF syntax. Note: If you re-use a given PdfContentStreamProcessor, you must call reset()
      Parameters:
      contentBytes - the bytes of a content stream
      resources - the resources that come with the content stream

    • handleInlineImage

      protected void handleInlineImage(InlineImageInfo info, PdfDictionary colorSpaceDic)
      Callback when an inline image is found. This requires special handling because inline images don't follow the standard operator syntax
      Parameters:
      info - the inline image
      colorSpaceDic - the color space for the inline immage

    • getRenderListener

      public RenderListener getRenderListener()
      Accessor method for the RenderListener object maintained in this class. Necessary for implementing custom ContentOperator implementations.
      Returns:
      the renderListener