# Package org.apache.fop.pdf

Classes for handling the low-level creation of PDF documents.

See: Description

- Interface Summary
  Interface | Description
  --- | ---
  PDFColorSpace | PDF Color space.
  PDFEncryption | This interface defines the contract for classes implementing PDF encryption.
  PDFImage | Interface for a PDF image.
  PDFWritable | This interface is implemented by classes that can be serialized to a PDF file either by serializing the object or by writing a indirect reference to the actual object.
  RefPDFFont |
  StreamCache | Interface used to store the bytes for a PDFStream.
  StructureType | A structure type, as defined in Section 10.6.2 of the PDF Reference, fourth edition (PDF 1.5).

- Class Summary
  Class | Description
  --- | ---
  AbstractPDFFontStream | Base class for PDF font streams.
  AbstractPDFStream | This is an abstract base class for PDF streams.
  AlphaRasterImage | PDFImage implementation for alpha channel "images".
  ASCII85Filter | PDF Filter for ASCII85.
  ASCIIHexFilter | ASCII Hex filter for PDF streams.
  BitmapImage | Bitmap image.
  CCFFilter | CCF Filter class.
  CMapBuilder | A cmap builder.
  DCTFilter | DCT Filter class.
  DestinationComparator | Comparator class to enable comparing (and hence sorting) of PDFDestination objects.
  FlateFilter | A filter to deflate a stream.
  InMemoryStreamCache | StreamCache implementation that uses temporary files rather than heap.
  NullFilter | Null Filter class.
  ObjectStream | An object stream, as described in section 3.4.6 of the PDF 1.5 Reference.
  PDFAction | class representing an action object.
  PDFAnnotList | class representing an object which is a list of annotations.
  PDFArray | Class representing an array object.
  PDFCFFStream | Special PDFStream for embeddable CFF fonts.
  PDFCFFStreamType0C | PDFStream for embeddable OpenType CFF fonts.
  PDFCharProcs | class representing a /CharProcs dictionary for Type3 fonts.
  PDFCIDFont | Class representing a "character identifier" font (p 210 and onwards).
  PDFCIDFontDescriptor | Class representing a font descriptor for CID fonts.
  PDFCIDSystemInfo | class representing system information for "character identifier" fonts.
  PDFCIELabColorSpace | This class represents a "CIE L*a*b*" color space.
  PDFCMap | Class representing the CMap encodings.
  PDFColor | PDF Color object.
  PDFColorHandler | This class handles the registration of color spaces and the generation of PDF code to select the right colors given a `Color` instance.
  PDFDestination | class representing a named destination
  PDFDests | class representing an /Dests dictionary object
  PDFDeviceColorSpace | Represents a device-specific color space.
  PDFDictionary | Class representing a PDF dictionary object
  PDFDocument | Class representing a PDF document.
  PDFDPart |
  PDFDPartRoot |
  PDFEmbeddedFile | This class represents an embedded file stream.
  PDFEmbeddedFiles | Class representing an /EmbeddedFiles dictionary object (name tree).
  PDFEncoding | Class representing an /Encoding object.
  PDFEncryptionJCE | An implementation of the Standard Security Handler.
  PDFEncryptionManager | This class acts as a factory for PDF encryption support.
  PDFEncryptionParams | This class holds the parameters for PDF encryption.
  PDFFactory | This class provides method to create and register PDF objects.
  PDFFileSpec | Class representing a /FileSpec object.
  PDFFilter | PDF Filter class.
  PDFFilterList | This class represents a list of PDF filters to be applied when serializing the output of a PDF object.
  PDFFont | Class representing a /Font object.
  PDFFontDescriptor | Class representing a font descriptor (/FontDescriptor object).
  PDFFontNonBase14 | A common ancestor for Type1, TrueType, MMType1 and Type3 fonts (all except base 14 fonts).
  PDFFontTrueType | Class representing a TrueType font.
  PDFFontType0 | Class representing a Type0 font.
  PDFFontType1 | Class representing a Type1 or MMType1 font (not necessary for the base 14).
  PDFFontType3 | Class representing a Type3 font.
  PDFFormXObject | PDF Form XObject A derivative of the PDFXObject, is a PDF Stream that has not only a dictionary but a stream of image data.
  PDFFunction | class representing a PDF Function.
  PDFGoTo | class representing a /GoTo object.
  PDFGoToRemote | Class representing a /GoToR object.
  PDFGState | Class representing a /ExtGState object.
  PDFICCBasedColorSpace | Represents an ICCBased color space in PDF.
  PDFICCStream | Special PDFStream for ICC profiles (color profiles).
  PDFIdentifiedDictionary | Identified Dictionary.
  PDFImageXObject | PDF XObject A derivative of the PDF Object, is a PDF Stream that has not only a dictionary but a stream of image data.
  PDFInfo | class representing an /Info object
  PDFInternalLink | class used to create a PDF internal link
  PDFJavaScriptLaunchAction | PDF Action which executes some JavaScript code.
  PDFLaunch | This class represents the /Launch action.
  PDFLayer | Optional Content Group Dictionary, which we will call a 'layer'.
  PDFLayer.Resolver |
  PDFLinearization |
  PDFLink | class representing an /Annot object of /Subtype /Link
  PDFMetadata | Special PDFStream for Metadata.
  PDFName | Class representing a PDF name object.
  PDFNames | Class representing a PDF Names object
  PDFNameTreeNode | Class representing a PDF name tree node.
  PDFNavigator | Navigation Node Dictionary, which we call a 'navigator'.
  PDFNavigator.Resolver |
  PDFNavigatorAction |
  PDFNull | Class representing a PDF name object.
  PDFNumber | This class represents a simple number object.
  PDFNumberTreeNode | Class representing a PDF number tree node.
  PDFNumsArray | Class representing an "Nums" array object (for Number Trees).
  PDFObject | generic PDF object.
  PDFObjectNumber |
  PDFOutline | This represents a single Outline object in a PDF, including the root Outlines object.
  PDFOutputIntent | Represents the OutputIntent dictionary.
  PDFPage | Class representing a /Page object.
  PDFPageLabels | Class representing a PDF /PageLabels dictionary.
  PDFPages | class representing a /Pages object.
  PDFPaintingState | This keeps information about the current painting state when writing to pdf.
  PDFParentTree | Class representing a PDF /ParentTree.
  PDFPathPaint | Base class for PDF painting operations.
  PDFPattern | class representing a PDF Function.
  PDFProfile | This class allows tracks the enabled PDF profiles (PDF/A and PDF/X) and provides methods to the libarary and its users to enable the generation of PDFs conforming to the enabled PDF profiles.
  PDFRectangle | class representing a rectangle Rectangles are specified on page 183 of the PDF 1.3 spec.
  PDFReference | Class representing a PDF object reference.
  PDFResourceContext | The PDF resource context.
  PDFResources | Class representing a /Resources object.
  PDFRoot | Class representing a Root (/Catalog) object.
  PDFSeparationColorSpace | This class represents a "Separation" color space.
  PDFSetOCGStateAction |
  PDFSetOCGStateAction.Resolver |
  PDFShading | class representing a PDF Smooth Shading object.
  PDFSignature |
  PDFSignParams |
  PDFStream | Class representing a PDF stream.
  PDFStructElem | Class representing a PDF Structure Element.
  PDFStructElem.Placeholder | Class representing a placeholder for a PDF Structure Element.
  PDFStructTreeRoot | Class representing a PDF /StructTreeRoot dictionary.
  PDFT1Stream | Special PDFStream for embedding Type 1 fonts.
  PDFText | This class represents a simple number object.
  PDFTextUtil | Utility class for generating PDF text objects.
  PDFToUnicodeCMap | Class representing ToUnicode CMaps.
  PDFTransitionAction |
  PDFTransitionAction.Resolver |
  PDFTTFStream | Special PDFStream for embeddable TrueType fonts.
  PDFUri | class used to create a PDF Uri link
  PDFWArray | Class representing a W array for CID fonts.
  PDFXObject | Abstract base class of PDF XObjects.
  StandardStructureAttributes | Standard attributes, as defined in section 10.7.5 of the PDF Reference, Fourth edition (PDF 1.5).
  StandardStructureAttributes.Table |
  StandardStructureTypes | Standard structure types, as defined in section 10.7.4 of the PDF Reference, Fourth Edition (PDF 1.5).
  StandardStructureTypes.Grouping |
  StandardStructureTypes.Illustration |
  StandardStructureTypes.InlineLevelStructure |
  StandardStructureTypes.List |
  StandardStructureTypes.Paragraphlike |
  StandardStructureTypes.RubyOrWarichu |
  StandardStructureTypes.Table |
  StreamCacheFactory | This class is serves as a factory from
  StructureHierarchyMember | An element in the document's structure tree.
  TempFileStreamCache | StreamCache implementation that uses temporary files rather than heap.
  TransitionDictionary | Transition Dictionary This class is used to build a transition dictionary to specify the transition between pages.
  VersionController | An abstraction that controls the mutability of the PDF version for a document.

- Enum Summary
  Enum | Description
  --- | ---
  PDFAMode | Enum class for PDF/A modes.
  PDFInfo.StandardKey | The standard keys in the Document Information Dictionary
  PDFUAMode | Enum class for PDF/UA modes.
  PDFVTMode |
  PDFXMode | Enum class for PDF/X modes.
  StandardStructureAttributes.Table.Scope |
  Version | A version of PDF.

- Exception Summary
  Exception | Description
  --- | ---
  PDFConformanceException | RuntimeException descendant indicating a conformance problem during PDF generation.
  PDFFilterException | PDF Filter exception.
  TransparencyDisallowedException | The PDF profile being used does not allow transparency.

## Package org.apache.fop.pdf Description

Classes for handling the low-level creation of PDF documents.

These classes were developed for FOP, but could be used by other applications wishing to produce PDF.

Copyright © 2025 Apache Software Foundation. All rights reserved.