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http://issues.apache.org/bugzilla/show_bug.cgi?id=42067 Summary: [PATCH] Exact positioning of PDF internal links Product: Fop Version: 1.0dev Platform: All OS/Version: All Status: NEW Severity: normal Priority: P2 Component: pdf AssignedTo: fop-dev@xmlgraphics.apache.org ReportedBy: [EMAIL PROTECTED] This patch re-implements the full internal link functionality in the PDF output. Bookmarks, basic-links and named destinations again point to the exact spot instead of the top of the page. The intermediate area tree XML format is also supported (except for named destinations). The target PageViewport is still determined during the layout phase; the on-page position is calculated in PDFRenderer. Note that the code could be greatly simplified if we moved everything to the renderer. This wouldn't break anything in FOP, but it would prevent custom renderers from getting the target PageViewport key. The patch itself also breaks renderers who pick up that key (as the type of the InternalLink trait has changed), but not beyond repair: all that's needed is a minor code change wherever that trait is read and the caller expects a String. The vast majority of changes are in PDFRenderer, PDFFactory, XMLRenderer and AreaTreeParser. But some other modifications were also required (or at least highly desired). The most important of them are: - PageViewport needs to know for what IDs it is the first PV, independently of ATH. This info is needed in the renderer. - The dummy area generated by a fo:wrapper must be added to the area tree, at least if it has an ID. (DocBook generates empty wrappers for <indexterm>s.) [Note: I kept this a "generic" InlineArea. But maybe it would be better to create a subclass, e.g. DummyInlineArea.] - Two extra constructors for BookmarkData, for stuff read back from the area tree XML. Also made the tagging of subdata as "unresolved" conditional, because bookmarks read from AT XML are already resolved. - To avoid code duplication (and divergence), the actual adding of an INTERNAL_LINK trait to an area is now done exclusively in the LinkResolver. - Created an additional constructor for PDFDestination. - New method PDFState.getBaseTransform() returns the transformation to be used for fixed-positioned areas. I also added some helper functions here and there to move duplicated code into (esp. in PDFFactory). And on at least two occasions I changed existing comments because they puzzled me rather than helping me understand the purpose of the commented-upon object. Whether all these changes are acceptable is of course up to the team. If any changes or extensions are required, I'm willing to provide them. -- Configure bugmail: http://issues.apache.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee.
