Package de.intarsys.pdf.content

The "content" package contains functionality to work on PDF content streams.

See: Description

Interface Summary

Interface	Description
IContentStreamProvider	An interface for all owners of PDF content streams.
ICSDevice	The abstraction of a device that is manipulated by a PDF content stream interpreter (ICSInterpreter) processing a content stream.
ICSDeviceFeatures	The CSDeviceBasedInterpreter may do some unnecessary work when interfacing to an ICSDevice, for example when he realizes images where the device finally only handles shapes or text.
ICSExceptionHandler	An object able to handle exceptional conditions while processing a content stream.
ICSInterpreter	An interpreter for CSContent PDF graphics streams.

Class Summary

Class	Description
CSBasicDevice	A ICSDevice handling the complex semantics of the path and text drawing operators.
CSContent	Represents the tokenized content of a PDF rendering program which is called a "content stream".
CSDeviceAdapter	An adapter implementation for ICSDevice.
CSDeviceBasedInterpreter	A content stream interpreter for PDF graphics primitives that delegates execution to an ICSDevice object.
CSDeviceFilter	Abstract superclass for implementing a filter on ICSDevice.
CSImageFilter	Only image related operations will reach the final device.
CSInterpreter	An abstrct superclass for implementing an interpreter for PDF content streams.
CSInterpreterFrame	The context frame of a CSInterpreter holding the "process" stack frame information.
CSLiteral	An "operation" that is not parsed but completely given in a byte sequence.
CSOperation	Represents the operations that make up a content stream.
CSOperator	A class representing an operator of a content stream.
CSOperators	A class enumerating the operators valid in a content stream.
CSPathFilter	Only path related operations will reach the device.
CSTextDevice	A common superclass for "text only" devices.
CSTextFilter	Only text related operations will reach the device.
CSVirtualDevice	A common superclass for devices that do not need path and text handling.
GraphicsState	The state information for performing graphic operations.
TextState	This class summarizes all state information that is used to render characters in the current context, such as font, font size or the text transformation matrix etc.

Exception Summary

Exception	Description
CSError	An error while procssing a content stream.
CSException	An exceptional condition encountered while procesing a content streams operations.
CSNotSupported	A unsupported operation has been found in a content stream.
CSWarning	A warning while processing a content stream.

Package de.intarsys.pdf.content Description

The "content" package contains functionality to work on PDF content streams. Content streams are the PDF way of expressing page or form visual content, expressed using the PDF content stream operators.

Content streams define a page or form content, implemented using COSStreams with a specific format. The stream data is built using a sequence of content stream operators. The stream dictionary additionally contains resources referenced by these operators.

This package contains higher level abstractions of the COSStream representing a content stream, CSContent, CSOperation and CSOperator.

A list of all known CSOperators is provided with CSOperators.

A framework for interpreting content streams is provided with ICSInterpreter and ICSDevice.