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Don't pass the information as a separate argument.
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Extracting embedded files can be trivially done with 'mutool show'
or a simple mutool run script.
The portfolio creation code is incomplete, and would require a lot of
work and testing with Adobe in order to be useful.
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Remove pointless paranoia checks.
Move the check whether it has already been loaded into load_portfolio().
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What's the difference between PDF_OBJ_FLAG_MARK and PDF_FLAGS_MARKED?
PDF_OBJ_FLAG_MARK is used to flag an xref entry as one that we want
to keep cached with the pdf_mark_xref/pdf_clear_xref_to_mark functions.
PDF_FLAGS_MARKED is used to detect unwanted recursion in PDF structures.
Renaming the xref_entry.flags field to xref_entry.marked should remove this
source of potential confusion.
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This option is exposed as the -D flag to mutool clean.
Allow saving a document without encryption.
The next step is to allow saving a document with new encryption, but this
may require a fair amount of rejigging since the PDF write code to keep
separate doc->crypt objects for decryption and encryption.
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The signer object now has an extra method that informs the caller of
the maximum size the digest might be. This is used to allocate space for
the digest within the file and to size some of the buffers used in the
code.
The openssl-based inplementation of the signer object has been updated to
perform a test digest generation so as to find the size needed. We
believe that the digest size is indendent of the hashed data.
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This was used to prevent infinite cycles in the Type3 font CharProcs,
but the previous commits forbids all cycles in order to prevent memory
leaks due to cyclic reference counts.
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pdf_get_inheritable also looks in trailer/Root/AcroForm for missing keys,
but this behavior is not supported by anything in the specification.
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The intent is for a user to iterate over the annotations on a page calling
pdf_update_annot for each one. If this function returns true, then the
annotation has changed since the last time it was called, and the user
needs to re-render.
pdf_update_page is a simple loop over the annotations on a page, for use
if you only care about page level granularity.
Users should no longer look at or change the pdf_annot.has_new_ap field.
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Alter pdf_can_be_saved_incrementally to return false when a hybrid xref
file has been opened. This doesn't enforce the behaviour, but will ensure
it for apps that determine their behaviour via this test function.
Once changes have been saved to such a file, it is no longer hybrid and so
further saving steps can use incremental updates.
This change was made because we were previously unable to sign hybrid xref
documents in a way that was satisfactory to Adobe Reader. Adobe Reader
reorganises hybrid xref files, thus invalidating any signature.
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The pdf_update_signature_appearance function must be called directly by
the signing code when it signs the document; as only the signing code has
all the text that needs to be written into the appearance.
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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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We do not support rich text content; remove the properties rather than
leave them untouched and out of sync with the simple contents and styles.
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Now handles more annotation types, and does not use the pdf-write device.
Handles many of the usual annotation properties, such as border width,
color, interior color, line ending styles.
* Ink
* Highlight, Underline, Strike-Out, Squiggly
* Line (with arrow-heads)
* Polygon
* PolyLine
* Square
* Circle
* Caret
* Text (needs better icons)
* FileAttachment (needs better icons)
* Sound (needs better icons)
* Stamp
* FreeText
Partially complete:
* Widget (treats everything like a plain text field)
Not done, but on the to-do list:
* /BS style (solid/dashed/bevel/inset/underline)
* /BS dash pattern
Not done and not on the list:
* Movie
* Screen
* Printer's Mark
* Trap Network
* Watermark
* /Border corner radii (ignored by acrobat)
* /BE cloudy border effect
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Also support Vertical WMode.
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Also remove useless pdf_new_null and pdf_new_bool functions.
Use the PDF_NULL, PDF_TRUE, and PDF_FALSE macros instead.
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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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Create a new empty dictionary, add it to the xref and return
a new indirect reference object that points to it.
This indirect reference needs to be dropped, since it was
created with a function using the 'new' keyword.
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pdf_dict_put_dict creates a new empty dictionary, inserts it
into the parent dictionary, and returns a borrowed reference to it.
These functions should simplify document creation by removing the
need to wrap creation with try/catch for reference counting cleanup.
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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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Don't create a useless pdf_font_desc when writing font resources.
Simplify reference counting by using fewer intermediate variables.
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Use KOI8-U for Cyrillic, and ISO 8859-7 for Greek.
Use with 'mutool create' using an extra argument to the %%Font directive:
%%Font TmRmC Times-Roman Cyrillic
BT
/TmRmC 16 Tf 10 10 Td
<fa c4 d2 c1 d7 d3 d4 d7 d5 ca d4 c5 21> Tj
ET
The alternatives are "Latin", "Greek", and "Cyrillic".
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Create a non-embedded CJK font using UTF-16 encoding. This can be used
in mutool create like so:
%%CJKFont Ming GB1
BT
/Ming 10 Tf
100 100 Td
<4F60 597D> Tj
ET
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