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The DA property is marked as inheritable for text fields. It is not
marked inheritable for FreeText annotations, but I don't believe it will
be a problem to treat it as such anyway.
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Several things irk me about passing values as const pointers:
* They can be NULL, which is not a valid value.
* They require explicit temporary variables for storage.
* They don't compose easily in a legible manner, requiring
weird pointer passing semantics where the variable being assigned
is hidden as an argument in the innermost function call.
* We can't change the value through the pointer, requiring yet more
local variables to hold copies of the input value.
In the device interface where we pass a matrix to a function, we often
find ourselves making a local copy of the matrix so we can concatenate
other transforms to it. This copying is a lot of unnecessary busywork
that I hope to eventually avoid by laying the groundwork with this
commit.
This is a rather large API change, so I apologize for the inconvenience,
but I hope the end result and gain in legibility will be worth the pain.
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Since the function no longer returns ownership of the string, use the
common naming convention.
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Removes the need to alloc/free text strings in the API, allowing
for simple functions like pdf_dict_get_text_string.
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Add a PDF_NAME(Foo) macro that evaluates to a pdf_obj for /Foo.
Use the C preprocessor to create the enum values and string table
from one include file instead of using a separate code generator tool.
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Use pdf_dict_put_* convenience functions.
Use pdf_dict_get instead of pdf_dict_gets with constant strings.
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_WIN32 is always defined on windows (it means the WinAPI is available).
_WIN64 is also defined on 64-bit targets.
This means the test for defined(_WIN32) || defined(_WIN64) is redundant,
since if _WIN64 is defined, then _WIN32 is always also defined.
MSC_VER is only defined for MSVC, so split the ifdef sections in
include/fitz/system.h into separate MSVC and WIN32 parts so that
we can build with MinGW and other non-MSVC compilers on windows.
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Filter out Link and Popup annotations.
Links are not comments, popup annotations are auxiliary information
for other annotations, so neither of these types should be present
in our list of annotations, but all other annotations should be there,
whether they have appearance streams or not.
Ensure has_new_ap is zero when first loaded, and changed if either
the active AP object is changed or the current AP content stream
is updated.
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Just use the pdf_obj directly.
Revise ap_iteration and split annot->dirty into separate flags.
One flag for needs_new_ap, and one for has_new_ap (to be used by
clients who may have cached a rendered annotation).
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More consistent with the rest of the code.
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Ignore invalid page references in outlines.
This was shown by a file that had [null 0 0 1] as a link dest.
Attempting to parse that threw an error, which caused the whole
outline load to fail.
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As per Adobe's recommendation:
https://helpx.adobe.com/acrobat/kb/link-html-pdf-page-acrobat.html
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Correctly transformed target coordinates for PDF.
Target coordinates for EPUB and HTML.
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All link destinations should be URIs, and a document specific function
can be called to resolve them to actual page numbers.
Outlines have cached page numbers as well as string URIs.
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As fz_drop_*()/fz_free() all must handle NULL.
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Use a flag in the pdf_annot struct instead.
Don't pass pdf_document to annotation edit functions.
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Put them in the PDF name space and separate words with underscores.
Remove redundant namespace prefixes in java constants.
Device.FLAG_MASK rather than Device.FZ_DEVFLAG_MASK.
Use namespace for PDF annotation flag enum.
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Closing a device or writer may throw exceptions, but much of the
foreign language bindings (JNI and JS) depend on drop to never throw
an exception (exceptions in finalizers are bad).
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We want to turn pdf_page into a thin wrapper around a pdf_obj, so that
any updates to the underlying PDF objects will be reflected without
having to reload the pdf_page.
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The generation number is only needed for decryption, and is assumed
to be zero or irrelevant for all other uses.
Store the original object number and generation in the xref slot, so
that we can decrypt them even when the objects have been renumbered,
without needing to pass the original object number around through
the stream loading APIs.
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