facing pages in PDF browsers

[Reinhard Kotucha]

Hi,
when facing pages are displayed in a PDF viewer, odd pages appear on
the left and even pages on the right.  With the patch below, pages are
arranged properly.


--- texinfo/doc/texinfo.tex--orig       2013-03-21 00:24:56.000000000 +0100
+++ texinfo/doc/texinfo.tex     2013-06-06 20:29:57.000000000 +0200
@@ -1180,7 +1180,7 @@
   }
   %
   %
-  \pdfcatalog{/PageMode /UseOutlines}
+  \pdfcatalog{/PageMode /UseOutlines /PageLayout /TwoPageRight}
   %
   % #1 is image name, #2 width (might be empty/whitespace), #3 height (ditto).
   \def\dopdfimage#1#2#3{%


Whether one or two pages are displayed at a time when the document is
opened depends on the Browser.  Evince starts in single-page mode
always and Adobe Reader starts in two-page mode if /TwoPageRight is
set in the document.  However, with /PageLayout/TwoPageRight both
browsers arrange pages properly, without the entry it looks strange
and no browser allows you to correct it.

Without /PageLayout/TwoPageRight:

  [1][2]
  [3][4]
  [5][6]

With /PageLayout/TwoPageRight:

     [1]
  [2][3]
  [4][5]
  [6][7]

If it confuses people that with this change some browsers display two
pages by default though they didn't in the past, the patch below might
be better.  The basic idea is that /TwoPageRight is *only* needed if
page numbers appear at different positions on odd and even pages.

Regards,
  Reinhard


--- texinfo/doc/texinfo.tex--orig       2013-03-21 00:24:56.000000000 +0100
+++ texinfo/doc/texinfo.tex     2013-06-06 22:31:43.000000000 +0200
@@ -3425,6 +3425,7 @@
 % title on inside top of left hand pages, and page numbers on outside top
 % edge of all pages.
 \def\HEADINGSdouble{%
+\ifpdf\pdfcatalog{/PageLayout/TwoPageRight}\fi
 \global\pageno=1
 \global\evenfootline={\hfil}
 \global\oddfootline={\hfil}

-- 
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Reinhard Kotucha                                      Phone: +49-511-3373112
Marschnerstr. 25
D-30167 Hannover                              mailto:address@hidden
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