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When opening a file, create a pdf_ocg_descriptor that lists the OCGs
in a file. Add a new function to allow us to set the configuration
in use (currently just the default one).
This sets the states of the OCGs as appropriate. When decoding the
file respect the states of the OCGs.
This results in Invite.pdf rendering correctly.
There is more to be done in this area (with automatic setting of
OCGs by language/zoom level etc), but this is a good start.
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Bring the MuPDF android build up to date with the latest source changes.
Many thanks to Dominic Battre for his helpful report in bug 692222.
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Bug 692245 gives a file that produces a runtime assert in mupdf due to an
extremely large ctm offset (unrepresentable in a float). We fix our code
here so that such floats are always read as 1.0.
In this particular case, the exact value read doesn't seem to matter. We
match acrobat. We pick 1.0 rather than 0.0 as this is less likely to
provoke division by 0 errors later on.
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The file in question is missing newlines, causing the first two
objects to be hidden because we treat the %PDF-1.3 version marker
as a comment.
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The run-together words are dead! Long live the underscores!
The postscript inspired naming convention of using all run-together
words has served us well, but it is now time for more readable code.
In this commit I have also added the sed script, rename.sed, that I used
to convert the source. Use it on your patches and application code.
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