New feature: "Intermediate format" (IF). The IF is basically the XML dialect written by the area tree renderer (XMLRenderer). A new parser for this format allows reparsing a serialized and possibly modified area tree and rendering it to the final target format. More details on the Wiki at http://wiki.apache.org/xmlgraphics-fop/AreaTreeIntermediateXml. No advanced features have been implemented, yet, only the basic functionality. The whole change should be fully backwards-compatible WRT the outer FOP API except maybe for FOTreeBuilder.addElementMapping(), and the area tree XML which got small changes.
The area tree has been cleaned up. The serializability has been restored. The CachedRenderPagesModel works again and can, in certain situations, decrease the maximum amount of memory held at one point in time. Some adjustments were necessary in the area tree to help the work of the AreaTreeParser.
The AreaTreeParser is new and is responsible for parsing area tree XML files and adding pages to a RenderPagesModel instance. It is SAX-based and should be pretty efficient.
XMLUnit (http://xmlunit.sourceforge.net, BSD license) is a new dependency for the test code. It is used to verify the correctness of the intermediate format code. It doesn't have to be installed for the build to run through, though.
ElementMapping got a new method getDOMImplementation() which provides the DOMImplementation used to handle a subdocument of a particular namespace. For example, SVG uses Batik's SVG DOM. The AreaTreeParser needs that to properly recreate foreign objects because it can't use the mechanism of the FO tree. The default implementation returns null.
The ElementMapping instances are no longer maintained by the FOTreeBuilder, but by the newly created ElementMappingRegistry class. It is expected that the instance of this class is moved from the FOTreeBuilder and the AreaTreeParser's Handler class to the "environment class" once it is created to cut down on the startup time for each processed document.
The XMLRenderer has been slightly modified to improve the serialization/deserialization qualities of the area tree XML format.
The XMLRenderer can now mimic another renderer (see mimicRenderer(Renderer)) in order to use its font setup. That way it is made certain that the reparsed area tree will render to the final target format exactly as expected.
Fixed a bug in the XMLHandlerRegistry which did not always return the right XMLHandler for every situation.
Added a DefaultErrorListener to the util package. I've had problems with Xalan-J swallowing exceptions with its default ErrorListener, so I added a simple one for convenience and use in AreaTreeParser.
Example code for working with the AreaTreeParser can be found in examples/embedding. Documentation will follow.
git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@369753 13f79535-47bb-0310-9956-ffa450edef68
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Separate Position from BreakPoss and create Leaf and NonLeafPosition classes.
Move management of Trait to top level Area class and use HAshMap instead of List.
Generalize handling of Trait in XMLRenderer and AreaTreeBuilder.
Improve handling of word-space and inter-area inline spaces in BP-style layout
managers. Set border and padding traits on InlineParent areas.
git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@194840 13f79535-47bb-0310-9956-ffa450edef68
initial implementation of line area layout processing
all inline area and their managers are managed by the
LineLayoutManager. This class fills a line with inline
areas and then does the alignment on all the inline areas.
elements which create inline areas add their managers to the
list that is used by the line layout. These managers have
a retrievable index of inline areas.
git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@194747 13f79535-47bb-0310-9956-ffa450edef68
Jeremias Maerki
Manuel Mall
Finn Bock
Glen Mazza
Keiron Liddle
Karen Lease