Package org.apache.fop.afp.modca
Class PresentationTextObject
java.lang.Object
org.apache.fop.afp.modca.AbstractAFPObject
org.apache.fop.afp.modca.AbstractStructuredObject
org.apache.fop.afp.modca.AbstractTripletStructuredObject
org.apache.fop.afp.modca.AbstractNamedAFPObject
org.apache.fop.afp.modca.PresentationTextObject
- All Implemented Interfaces:
Streamable
The Presentation Text object is the data object used in document processing
environments for representing text which has been prepared for presentation.
Text, as used here, means an ordered string of characters, such as graphic
symbols, numbers, and letters, that are suitable for the specific purpose of
representing coherent information. Text which has been prepared for
presentation has been reduced to a primitive form through explicit
specification of the characters and their placement in the presentation
space. Control sequences which designate specific control functions may be
embedded within the text. These functions extend the primitive form by
applying specific characteristics to the text when it is presented. The
collection of the graphic characters and control codes is called Presentation
Text, and the object that contains the Presentation Text is called the
PresentationText object.
The content for this object can be created using PtocaBuilder
.
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Nested Class Summary
Nested ClassesNested classes/interfaces inherited from class org.apache.fop.afp.modca.AbstractAFPObject
AbstractAFPObject.Category, AbstractAFPObject.Type
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Field Summary
FieldsModifier and TypeFieldDescriptionprivate PresentationTextData
The current presentation text dataprivate List
<PresentationTextData> The presentation text data listFields inherited from class org.apache.fop.afp.modca.AbstractNamedAFPObject
name
Fields inherited from class org.apache.fop.afp.modca.AbstractTripletStructuredObject
triplets
Fields inherited from class org.apache.fop.afp.modca.AbstractAFPObject
LOG, SF_CLASS, SF_HEADER_LENGTH
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Constructor Summary
ConstructorsConstructorDescriptionPresentationTextObject
(String name) Construct a new PresentationTextObject for the specified name argument, the name should be an 8 character identifier. -
Method Summary
Modifier and TypeMethodDescriptionboolean
createControlSequences
(PtocaProducer producer) Creates a chain of control sequences using a producer.boolean
createLineData
(AFPLineDataInfo lineDataInfo) Drawing of lines using the starting and ending coordinates, thickness and orientation arguments.void
createTextData
(AFPTextDataInfo textDataInfo) Create the presentation text data for the byte array of data.void
A control sequence is a sequence of bytes that specifies a control function.private void
Helper method to mark the end of the presentation text dataprivate int
getSize
(PtocaProducer producer) private void
private void
Helper method to mark the start of the presentation text datatoString()
protected void
Helper method to write the contents of the Object.protected void
writeEnd
(OutputStream os) Helper method to write the end of the Object.protected void
Helper method to write the start of the Object.Methods inherited from class org.apache.fop.afp.modca.AbstractNamedAFPObject
copySF, getName, getNameBytes, getNameLength, setName
Methods inherited from class org.apache.fop.afp.modca.AbstractTripletStructuredObject
addTriplet, addTriplets, getFullyQualifiedName, getTripletDataLength, getTriplets, hasTriplet, hasTriplets, setComment, setFullyQualifiedName, setFullyQualifiedName, setObjectClassification, writeTriplets
Methods inherited from class org.apache.fop.afp.modca.AbstractStructuredObject
writeToStream
Methods inherited from class org.apache.fop.afp.modca.AbstractAFPObject
copySF, truncate, writeChunksToStream, writeObjects
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Field Details
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currentPresentationTextData
The current presentation text data -
presentationTextDataList
The presentation text data list -
builder
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Constructor Details
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PresentationTextObject
Construct a new PresentationTextObject for the specified name argument, the name should be an 8 character identifier.- Parameters:
name
- the name of this presentation object
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Method Details
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createTextData
Create the presentation text data for the byte array of data.- Parameters:
textDataInfo
- The afp text data- Throws:
UnsupportedEncodingException
- thrown if character encoding is not supported
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createControlSequences
Creates a chain of control sequences using a producer.- Parameters:
producer
- the producer- Throws:
UnsupportedEncodingException
- thrown if character encoding is not supported
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getSize
- Throws:
IOException
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createLineData
Drawing of lines using the starting and ending coordinates, thickness and orientation arguments.- Parameters:
lineDataInfo
- the line data information.
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startPresentationTextData
private void startPresentationTextData()Helper method to mark the start of the presentation text data -
endPresentationTextData
private void endPresentationTextData()Helper method to mark the end of the presentation text data -
writeStart
Helper method to write the start of the Object.- Overrides:
writeStart
in classAbstractStructuredObject
- Parameters:
os
- The stream to write to- Throws:
IOException
- throws an I/O exception if one occurred
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writeContent
Helper method to write the contents of the Object.- Overrides:
writeContent
in classAbstractStructuredObject
- Parameters:
os
- The stream to write to- Throws:
IOException
- throws an I/O exception if one occurred
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writeEnd
Helper method to write the end of the Object.- Overrides:
writeEnd
in classAbstractStructuredObject
- Parameters:
os
- The stream to write to- Throws:
IOException
- an I/O exception if one occurred
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endControlSequence
public void endControlSequence()A control sequence is a sequence of bytes that specifies a control function. A control sequence consists of a control sequence introducer and zero or more parameters. The control sequence can extend multiple presentation text data objects, but must eventually be terminated. This method terminates the control sequence. -
handleUnexpectedIOError
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toString
- Overrides:
toString
in classAbstractNamedAFPObject
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getBytesAvailable
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