On Tue, 9 Dec 2008, Taco Hoekwater wrote: > Hartmut Henkel wrote: > > When you change \hoffset, the whole RL text moves in the DVI case, but > > not in the PDF case. > > In dvi mode there is a big difference between the actual dvi location > (dvi_h, moves r2l or l2r depending on text direction) and where tex > thinks the dvi location is (cur_h, always moves e2l). dvi output is > quite convoluted. In pdf mode, output is much more straightforward. > > I think that it would be better to listen to \pagerightoffset in > both cases, but that is open for discussion. > > > Also there seems to be some inconsistent magic if > > \pagerightoffset=0pt. > > In that case, it defaults to 1inch (pdf) or 2inch (dvi). Yes, that is > a mess (see below). I can easily make the pdf do what the dvi does, but > which behaviour is right? > > > I have no idea how it should look like. > > Me neither. And internally there are some more variables involved: > > \pdfhorigin > \pdfvorigin > \pdfbottomoffset > > Ok, \pdfbottomoffset can probably be ignored because luatex at the > moment doesn't do top-to-bottom scripts. But what about those origin > things? > > > Initex defaults: > > \pdfpagewidth 0pt > \pdfpageheight 0pt > \pdfbottomoffset 0pt > \pdfrightoffset 0pt > \hoffset 0pt > \voffset 0pt > \pdfhorigin 1in > \pdfvorigin 1in > > Here is the current logic (in DVI): > > cur_page_width = (\pdfpagewidth > 0 > ? \pdfpagewidth > : \wd255 +2*(\hoffset + 1in)) > cur_right_offset = (\pdfrightoffset != 0 > ? \pdfrightoffset > : 2in ) > cur_h = \hoffset > <dvi_h_loc> = (\pagedir TLT > ? cur_h > : cur_page_width-cur_right_offset - cur_h ) > > > And in PDF, it looks like this: > > cur_page_width = (\pdfpagewidth > 0 > ? \pdfpagewidth > : \wd255 +2*(\hoffset + \pdfhorigin)) > cur_right_offset = (\pdfrightoffset != 0 > ? \pdfrightoffset > : 1in ) > cur_h = (\pagedir TLT > ? \hoffset + \pdfhorigin; > : cur_page_width-cur_right_offset ) > <pdf_h_loc> = cur_h
regarding \pdfhorigin and \pdfvorigin, it just appeared (under the shower :-) that these both should move _all_ stuff on the page consistently and therefore _independently_ from the direction mode. They are purely paper oriented parameters and only in use for PDF. So i guess that these two can be factored out, and with 1in default PDF should look like DVI. No idea about the others. Regards, Hartmut _______________________________________________ dev-luatex mailing list [email protected] http://www.ntg.nl/mailman/listinfo/dev-luatex
