- If a link has both 'dest' and 'uri', the 'dest' will be used if it
exists, otherwise it will fallback to using the 'uri'.
- Ensure that a missing 'dest' does not result in an error. Instead a
warning is printed if CAIRO_DEBUG_TAG is set, and a link to the
current location is embedded in the PDF. ie the link does
nothing. Cairo needs to embed a link even if no destination is
available because when links are embedded at the end of the
document, the content stream already contains link tags.
- Remove cairo_pdf_interchange_write_forward_links. This code was
originally used prior to !463 when cairo wrote the links at the end
of each page. Now the links are written at the end of the document
so there are no longer any forward links with an unknown
destination, unless the destination does not exist.
- When 'internal' is not used, use the 'dest' name to reference the
link. Ensure non ASCII names are correctly encoded.
The FT change is because my MinGW build is using a more recent version
of FT.
Remove the disabled _cairo_win32_scaled_font_text_to_glyphs() code to
fix the defined but not used warning.
_cairo_win32_scaled_font_text_to_glyphs() was diabled in d9408041aa with
the comment:
"Currently disable the win32-font text_to_glyphs(), until that one
is updated. Or better yet, remove it and implement
ucs4_to_index(). It's the toy font API afterall."
_cairo_win32_scaled_font_ucs4_to_index() was added in d1c619bc7d.
Previously, forward references were required to use named destinations.
This patch is based on the patch in #336 by Guillaume Ayoub <guillaume.ayoub@kozea.fr>
that converted all links to indirect objects written at the end of the document.
I have reworked the patch so that only forward references to future page numbers are
written as indirect objects. Backward references and named destinations remain as they
are. This is to minimize the number of objects written to the PDF file.
Fixes#336
Extend the "pdf-tagged-text" test so that it does some basic checks
on the PDF file it creates. This covers the date fields as well as
some other metadata. More checks can and should be added.
