[cairo] writing multiple surfaces to a single (pdf) file

[Andrea Canciani]

2011/11/6 Zoltán Vörös <zvoros at gmail.com>:
> Hi All,
>
> I would like to ask how one can save multiple surfaces into a single pdf
> file. I know how to save a single surface, but what if I would like to write
> two surfaces to two pages of a pdf file. One example could be if I save the
> original surface, then modify, and then save the new surface. Is this
> possible, or one has to concatenate the pdf files outside?

You can do that in cairo using cairo_copy_page() or cairo_show_page().

See http://cairographics.org/manual/cairo-cairo-t.html#cairo-copy-page
and http://cairographics.org/manual/cairo-cairo-t.html#cairo-show-page

Unfortunately I cannot find any short sample that uses them...
I hope the documentation is sufficient

(The simplest reference I can provide is:
http://cgit.freedesktop.org/cairo/tree/test/multi-page.c#n106
)

Andrea

> Thanks,
> Zoltán
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