On 19.06.2008 13:26:21 Luca Furini wrote: > Some time ago (well, almost 2 years!) we spoke about the possibility > to allow users to define borders and padding for the page regions . > > This week I finally found some time to do it, so I have it working on > my local copy ... but then I was struck by a dilemma: the additional > traits about borders and padding should be set for the region viewport > (class RegionViewport) of for the region reference area > (RegionReference)?
Good question. There's both in FOP. block-container has the border on the viewport. table-cell has it on the reference area (table-cell doesn't generate a viewport). But I fear we might actually be wrong about having the border and padding on the viewport area. In 6.5.3, block-container: http://www.w3.org/TR/xsl11/#fo_block-container "These determine the orientation of the start-edge, end-edge, before-edge and afteredge of the content-rectangle of the viewport-area, and of the padding-, border-, and content-rectangles of the reference-area." The same on inline-container, for example. > This sentence in the specs (4.2.2. common traits) made me decide to > put them in the RegionRefernce, as the padding results in a reduction > of the content rectangle bpd / ipd: > "Only a reference-area may have a block-progression-direction which is > different from that of its parent." > > But (6.4.14. fo:region-body), where it says that padding and borders > should be 0, also says that it's the region viewport that has margins > (so it would have paddings and borders too, if allowed). > Moreover, the code already present in > AbstractPathOrientedRendere.handleRegionTraits() (not to mention > Murphy's laws!) seem to suggest that these traits should belong to the > region viewport. Don't confuse margins with border/padding. Margins are on the outside of a construct, i.e. outside the viewport. Borders/padding are on the inside. It's interesting that we treat background and borders together in the renderers although 4.9.4 http://www.w3.org/TR/xsl11/#rend-border makes a distinction where the background is to be applied. But we don't support background-attachment so that didn't get noticed that way. I guess we have a corpse in the basement. ;-) Can anyone confirm? > So, a couple of questions: > - do we still think that supporting borders and padding on regions > when relaxed validation is on would be something good (or, at least, > not bad)? I guess so although I'd rather have background on simple-page-master. ;-) > - is RegionViewport the right place for the additional traits? > > Regards > Luca > > >  > http://www.nabble.com/Re%3A-svn-commit%3A-r225580----xmlgraphics-fop-trunk-test-layoutengine-testcases-page-master4.xml-to511937.html#a511937 Jeremias Maerki