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Java Source Code / Java Documentation » PDF » pjx » com.etymon.pj   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    com.etymon.pj.Pdf Pdf public class Pdf (Code) A document representation of a PDF file. author:    Nassib Nassar Field Summary protected  PjObjectVector _objects      protected  Hashtable _trailer      Constructor Summary public   Pdf()      Creates an empty PDF document. public   Pdf(String filename)      Creates a PDF document from an existing PDF file. Method Summary public  void addToPage(PjPage page, int objectNumber)      Adds a PjObject to a page in this PDF document. public  int appendPage(int objectNumber)      Appends a PjPage to the end of this PDF document. Parameters:   objectNumber - the object number of the PjPage to append. public  void appendPdfDocument(Pdf pdf)      Appends the pages of a PDF document to this document. public  int deletePage(int pageNumber)      Deletes a page in this document by page number. public  int getCatalog()      Looks up the Catalog object in this document. public  PjDictionary getEncryptDictionary()      Looks up the Encrypt dictionary within this document's trailer. public  Vector getFields()      public  PjReference getInfoDictionary()      Looks up the Info dictionary within this document's trailer. public  int getMaxObjectNumber()      Returns the largest object number in the list of registered PjObjects. public  PjObject getObject(int objectNumber)      Looks up a PjObject by its object number. Parameters:   objectNumber - the object number of the PjObject to retrieve. public  int getPage(int pageNumber)      Looks up a page in this document by page number. Parameters:   pageNumber - the page number. public  int getPageCount()      Determines the number of pages in this PDF document. public  int getRootPages()      Looks up the root Pages object of this document's Pages tree. public  PjDictionary inheritFieldAttributes(PjDictionary node)      Returns a clone of a field node such that all inherited attributes of the given field node are made explicit. public  PjPagesNode inheritPageAttributes(PjPagesNode node)      Returns a clone of a pages node such that all inherited attributes of the given pages node are made explicit. public  int registerObject(PjObject obj)      Registers a PjObject within this PDF document. Parameters:   obj - the PjObject to register. public  void registerObject(PjObject obj, int objectNumber)      Registers a PjObject within this PDF document using a specified object number. public  PjObject resolve(PjObject obj)      Dereferences a PjObject if it is a PjReference. Parameters:   obj - the PjObject to dereference. public  void setEncryptDictionary(PjReference ref)      Sets the Encrypt dictionary within this document's trailer. public  void setEncryptDictionary(PjDictionary dict)      Sets the Encrypt dictionary within this document's trailer. public  void setInfoDictionary(PjReference ref)      Sets the Info dictionary within this document's trailer. public  void updateFieldValue(PjDictionary origField, PjDictionary field, String value)      public  void writeToFile(String filename)      Writes this PDF document to a file in PDF format. public  void writeToStream(OutputStream os)      Writes this PDF document to a stream in PDF format. Field Detail _objects protected PjObjectVector _objects(Code) _trailer protected Hashtable _trailer(Code) Constructor Detail Pdf public Pdf()(Code) Creates an empty PDF document. Pdf public Pdf(String filename) throws IOException, PjException(Code) Creates a PDF document from an existing PDF file. Parameters:   filename - the name of the PDF file to read. exception:   IOException - if an I/O error occurs. exception:   PjException - if a PDF error occurs. Method Detail addToPage public void addToPage(PjPage page, int objectNumber) throws InvalidPdfObjectException(Code) Adds a PjObject to a page in this PDF document. Parameters:   page - the page object to add to. Parameters:   objectNumber - the object number of the PjObject to add. exception:   InvalidPdfObjectException - if an invalid objecttype is encountered. appendPage public int appendPage(int objectNumber)(Code) Appends a PjPage to the end of this PDF document. Parameters:   objectNumber - the object number of the PjPage to append. the new object number of the appended PjPage. appendPdfDocument public void appendPdfDocument(Pdf pdf) throws InvalidPdfObjectException(Code) Appends the pages of a PDF document to this document. Note that this does not clone the other document but simply includes references to its objects. Therefore the other document should be discarded immediately after a call to this method, otherwise you could get very strange results. Parameters:   pdf - the PDF document to append. exception:   InvalidPdfObjectException - if an invalid objecttype is encountered in either document. deletePage public int deletePage(int pageNumber) throws IndexOutOfBoundsException, InvalidPdfObjectException(Code) Deletes a page in this document by page number. The page is deleted by removing the reference to it from the page tree; however, no objects are actually deleted from the document. Parameters:   pageNumber - the page number. Pages are numberedstarting with 1. the object number of the deleted Page object. exception:   IndexOutOfBoundsException - if an invalid pagenumber was given. exception:   InvalidPdfObjectException - if an invalid objecttype is encountered. getCatalog public int getCatalog() throws InvalidPdfObjectException(Code) Looks up the Catalog object in this document. the object number of the Catalog object. exception:   InvalidPdfObjectException - if an invalid objecttype is encountered. getEncryptDictionary public PjDictionary getEncryptDictionary() throws InvalidPdfObjectException(Code) Looks up the Encrypt dictionary within this document's trailer. The Encrypt dictionary contains information for decrypting a document. the Encrypt dictionary, or null if no Encrypt field ispresent in the trailer. exception:   InvalidPdfObjectException - if the Encrypt field inthe trailer is not a dictionary (PjDictionary) object. getFields public Vector getFields() throws InvalidPdfObjectException(Code) getInfoDictionary public PjReference getInfoDictionary() throws InvalidPdfObjectException(Code) Looks up the Info dictionary within this document's trailer. The Info dictionary contains general information about the document. a reference to the Info dictionary, or null if noInfo field is present in the trailer. exception:   InvalidPdfObjectException - if the Info field inthe trailer is not a reference (PjReference) object. getMaxObjectNumber public int getMaxObjectNumber()(Code) Returns the largest object number in the list of registered PjObjects. This is useful mainly for functions that need to run through the list and process each object, because this provides the maximum object number they need to examine. The object number may not currently be assigned to an object, but probably was at some point in the past. the size of the object list. getObject public PjObject getObject(int objectNumber)(Code) Looks up a PjObject by its object number. Parameters:   objectNumber - the object number of the PjObject to retrieve. the requested PjObject. getPage public int getPage(int pageNumber) throws IndexOutOfBoundsException, InvalidPdfObjectException(Code) Looks up a page in this document by page number. Parameters:   pageNumber - the page number. Pages are numberedstarting with 1. the object number of the identified Page object. exception:   IndexOutOfBoundsException - if an invalid pagenumber was given. exception:   InvalidPdfObjectException - if an invalid objecttype is encountered. getPageCount public int getPageCount() throws InvalidPdfObjectException(Code) Determines the number of pages in this PDF document. the number of pages in this PDF document. exception:   InvalidPdfObjectException - if an invalid objecttype is encountered. getRootPages public int getRootPages() throws InvalidPdfObjectException(Code) Looks up the root Pages object of this document's Pages tree. the object number of the root Pages object. exception:   InvalidPdfObjectException - if an invalid objecttype is encountered. inheritFieldAttributes public PjDictionary inheritFieldAttributes(PjDictionary node) throws InvalidPdfObjectException(Code) Returns a clone of a field node such that all inherited attributes of the given field node are made explicit. For example, if the V key is not defined in the given field node, this method ascends the field tree (via the Parent reference) looking for an ancestor node that does contain a value for the V key; if it finds one, it assigns that value in the cloned (returned) field node. This is done for all inheritable attributes. Parameters:   node - a field node for which inherited attributes areto be retrieved. a cloned copy of the given field node with actualvalues substituted for all inherited attributes. exception:   InvalidPdfObjectException - if an invalid objecttype is encountered. inheritPageAttributes public PjPagesNode inheritPageAttributes(PjPagesNode node) throws InvalidPdfObjectException(Code) Returns a clone of a pages node such that all inherited attributes of the given pages node are made explicit. For example, if MediaBox is not defined in the given pages node, this method ascends the pages tree (via the Parent reference) looking for an ancestor node that does contain a value for MediaBox; if it finds one, it assigns that value in the cloned (returned) pages node. This is done for all inheritable attributes. Parameters:   node - a pages node for which inherited attributes areto be retrieved. a cloned copy of the given pages node with actualvalues substituted for all inherited attributes. exception:   InvalidPdfObjectException - if an invalid objecttype is encountered. registerObject public int registerObject(PjObject obj)(Code) Registers a PjObject within this PDF document. Parameters:   obj - the PjObject to register. the new object number of the registered PjObject. registerObject public void registerObject(PjObject obj, int objectNumber)(Code) Registers a PjObject within this PDF document using a specified object number. Parameters:   obj - the PjObject to register. Parameters:   objectNumber - the object number to register obj under. resolve public PjObject resolve(PjObject obj)(Code) Dereferences a PjObject if it is a PjReference. Parameters:   obj - the PjObject to dereference. the referenced PjObject if obj is a PjReference, or obj otherwise. setEncryptDictionary public void setEncryptDictionary(PjReference ref)(Code) Sets the Encrypt dictionary within this document's trailer. Parameters:   ref - a reference to the Encrypt dictionary. setEncryptDictionary public void setEncryptDictionary(PjDictionary dict)(Code) Sets the Encrypt dictionary within this document's trailer. Parameters:   dict - the Encrypt dictionary. setInfoDictionary public void setInfoDictionary(PjReference ref)(Code) Sets the Info dictionary within this document's trailer. Parameters:   ref - a reference to the Info dictionary. updateFieldValue public void updateFieldValue(PjDictionary origField, PjDictionary field, String value) throws PdfFormatException, InvalidPdfObjectException(Code) writeToFile public void writeToFile(String filename) throws IOException(Code) Writes this PDF document to a file in PDF format. Parameters:   filename - the name of the PDF file to create. exception:   IOException - if an I/O error occurs. writeToStream public void writeToStream(OutputStream os) throws IOException(Code) Writes this PDF document to a stream in PDF format. Parameters:   os - the stream to write to. exception:   IOException - if an I/O error occurs. Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)