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java.lang.Objectorg.apache.fop.pdf.PDFObject
org.apache.fop.pdf.PDFDictionary
org.apache.fop.pdf.AbstractPDFStream
public abstract class AbstractPDFStream
This is an abstract base class for PDF streams.
Field Summary |
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Fields inherited from class org.apache.fop.pdf.PDFDictionary |
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entries, order |
Fields inherited from class org.apache.fop.pdf.PDFObject |
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DATE_FORMAT, log |
Constructor Summary | |
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AbstractPDFStream()
Constructor for AbstractPDFStream. |
Method Summary | |
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protected int |
encodeAndWriteStream(java.io.OutputStream out,
PDFNumber refLength)
Encodes and writes a stream directly to an OutputStream. |
protected StreamCache |
encodeStream()
Encodes the raw data stream for output to a PDF file. |
protected java.lang.String |
getDefaultFilterName()
Returns the name of a suitable filter for this PDF object. |
PDFFilterList |
getFilterList()
Returns the associated filter list. |
protected abstract int |
getSizeHint()
Returns a value that hints at the size of the encoded stream. |
protected int |
output(java.io.OutputStream stream)
Overload the base object method so we don't have to copy byte arrays around so much Write the PDF represention of this object |
protected abstract void |
outputRawStreamData(java.io.OutputStream out)
Sends the raw stream data to the target OutputStream. |
protected int |
outputStreamData(StreamCache encodedStream,
java.io.OutputStream out)
Output just the stream data enclosed by stream/endstream markers |
protected void |
populateStreamDict(java.lang.Object lengthEntry)
Populates the dictionary with all necessary entries for the stream. |
protected void |
prepareImplicitFilters()
Prepares implicit filters (such as the DCTFilter for JPEG images). |
protected void |
setupFilterList()
Sets up the default filters for this stream if they haven't been set from outside. |
Methods inherited from class org.apache.fop.pdf.PDFDictionary |
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get, put, put, writeDictionary |
Methods inherited from class org.apache.fop.pdf.PDFObject |
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contentEquals, encode, encodeBinaryToHexString, encodeString, encodeText, formatDateTime, formatDateTime, formatObject, getDocument, getDocumentSafely, getGeneration, getObjectID, getObjectNumber, getParent, hasObjectNumber, makeReference, outputInline, referencePDF, setDocument, setObjectNumber, setParent, toPDF, toPDFString |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public AbstractPDFStream()
Method Detail |
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protected void setupFilterList()
protected java.lang.String getDefaultFilterName()
PDFFilterList
public PDFFilterList getFilterList()
protected abstract int getSizeHint() throws java.io.IOException
java.io.IOException
- in case of an I/O problemprotected abstract void outputRawStreamData(java.io.OutputStream out) throws java.io.IOException
out
- OutputStream to write to
java.io.IOException
- In case of an I/O problemprotected int outputStreamData(StreamCache encodedStream, java.io.OutputStream out) throws java.io.IOException
encodedStream
- already encoded/filtered stream to writeout
- OutputStream to write to
java.io.IOException
- in case of an I/O problemprotected StreamCache encodeStream() throws java.io.IOException
java.io.IOException
- in case of an I/O problemprotected int encodeAndWriteStream(java.io.OutputStream out, PDFNumber refLength) throws java.io.IOException
out
- OutputStream to write torefLength
- PDFNumber object to receive the stream length
java.io.IOException
- in case of an I/O problemprotected int output(java.io.OutputStream stream) throws java.io.IOException
output
in class PDFDictionary
stream
- the stream to write the PDF to
java.io.IOException
- if there is an error writing to the streamprotected void populateStreamDict(java.lang.Object lengthEntry)
lengthEntry
- value for the /Length entryprotected void prepareImplicitFilters()
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