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Move coordinate space tweaks into pdf_ and xps_run_page, and provide
neutral pdf_ and xps_bound_page functions to return the page size as
a zero-origined bounding box.
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I don't remember exactly why I added it; but there are several
progressions when I remove it.
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Keep the fuzz in just one place. Hopefully will be rendered
unnecessary by changes to make fz_bound_text accurate.
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Inspired by Sumatras gdi devices need for such a function expose
the blending functions. Note that we produce unsigned char's
where Zenikos original produces ints, but it's otherwise
identical.
This requires us to make various knockon changes throughout the code
from int to unsigned char, none of which should make any difference
at all - I hope!
We reserve the right to change/amend this function in future to
operate on blocks of pixels (or pixels in different colorspaces)
(or anything else we think of) in future.
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Add explanations of how to use the macros in fitz.h.
Also included are 2 different formulations, with different strengths/
weaknesses for reference. Will remove these shortly, but I want a
reference to them in git.
Workaround bug in Mac OS Lion gcc (clang works fine).
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Thanks to Zeniko for pointing this out.
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Take on a modified version of Zenikos patch; only take the quick
exit if the whole dash length is small, or if the dash_length
scaled up by the maximum possible scale in the ctm is less than
1/2 a pixel.
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Avoid unhandled exceptions. Thanks to Zeniko for this.
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Fixes a bug where objects remained in the store and would
keep stable pointers to the freed xref, later on those
objects could lead to false positive hits.
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Add missing newline and remove excessive arguments.
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Include android headers in fitz.h so we can debug.
Arrange for error throwing to output to android error stream as
well as stderr.
Change jpeg library to not use backing store. Solves bug 692473.
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xps_parse_resource_dictionary can now warn and return NULL when reading
an empty dictionary, rather than throwing an error.
Various bits of code are therefore updated to check for a NULL return
value.
We should cope better with multiple Resource dictionaries.
Tweak to the zip file handling when looking for parts.
Again, all from (or inspired by) Zenikos patch.
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Fix 2 places where we were filling a stroked pattern rather than
stroking it.
Cope with being asked to run a NULL buffer.
If running a stream fails, warn and return what we have, rather than
giving up entirely. Should really set a return code for each render.
Only look at the Print flag bit for Print renders. Only look at the
View flag bit for view renders.
If we find an unexpected ) or > during object parsing, warn and continue
rather than giving up entirely.
If optional content groups are broken, render the rest of the page
anyway.
Previously indirect objects that point to another indirection would
cause a failure; now attempt to resolve these. We set an arbitrary
limit of 10 such redirections to avoid infinite loops.
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Various fixes to avoid overflow problems, division by zeros, use
of uninitialised variables etc. All from/suggested by Zenikos patch.
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When repairing, if we hit a problem after having found a root object
live with that root object rather than giving up completely.
Also fix a memory leak, and cope better with trailing crap.
Thanks to Zeniko for these.
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Thanks to Zeniko for pointing this out.
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Thanks to Zeniko for pointing this out.
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We can't do them properly at the moment, so don't try to do them at
all - only makes stuff worse for now.
Thanks to Zeniko for this.
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Exactly parallel to the png problem fixed a few days ago. Thanks to
Zeniko for pointing this out.
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In error cases, ensure we free objects correctly. Thanks to Zeniko
for finding the problems (and many of the solutions!)
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In various places in the code, we add markers (".seen") to
dictionaries as we traverse them to ensure that we don't
go into infinite loops.
Adding a dictionary entry is bad as it's a) an expensive
operation, b) a potentially destructive one, and c) produces another
possible point of failure (as mallocs can fail).
Instead, add a flag to each dict to allow them to be marked/unmarked
and use that instead.
Thanks to Zeniko for pointing out various places that could usefully
be protected against infinite recursion.
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Externalise free_link_dest, use it in doc_outline.c to avoid a memory
leak.
Thanks to again to Zeniko for pointing this out.
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Only create a shape if we need to.
Correctly cleanup, thus avoiding a double free of mask later on.
Thanks to Zeniko for spotting these.
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In pdfshow, if we fail to parse an object, just skip it rather than
aborting. Thanks to Zeniko for the suggestion.
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The logic controlling whether to expand a trailer dictionary
or not was reversed. Fixed here. Thanks to Zeniko for pointing
this out.
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A new 'cookie' parameter is added to page rendering/interpretation
functions. Supply this as NULL to get existing behaviour.
If you supply a non-NULL cookie, then this is taken as a pointer to
a struct that can be used for simple, non-thread locked communication
between caller and library.
The entire struct should be memset to zero before entry, except for
specific flags (thus coping with future extensions to this struct).
The abort flag should be zero on entry. It will be checked periodically
by the library - if the caller sets it non-zero (via another thread)
then the current operation will be aborted. No guarantees are given as
to how often this will be checked, or how fast it will be responded to.
The progress_max field will be set to an integer (-1 for unknown)
representing the number of 'things' to do. The progress field will
count up from 0 to this number as time goes by. No guarantees are
made as to the accuracy of this information, but it should be
useful for offering some sort of progress bar etc. Note that
progress_max may increase during the job.
In general, callers should be careful to accept out of range or
invalid data in this structure as this is deliberately
accessed 'unlocked'.
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Add simple combined exe build for mupdf/muxps tools.
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As we create clips/transparency groups etc, we maintain a stack of
draw device states.
Here we change this from having a 'current' state, and storing changes
on the stack to always keeping the complete current state on the head
of the stack. This should make error cleanup easier, as well as being
conceptually easier to follow (for me at least).
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When starting to tile, create a shape plane if one exists.
When finishing tiling, plot the shape plane back too.
This solves the SEGVs. Something isn't quite right with the blending
colours on part of this file though.
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Fix a 'TODO'. When asking for the bounds of a shading, simply
convert the shadings bbox and intersect with that.
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In order for hyperlinks to work, we need to load the outlines after
the pages tree.
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Testsseem to indicate that this works, and gives noticable
improvements. Enabling by default.
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The xps png reading code was overwriting its context pointer with
zero, then referencing through it.
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When the page number is given by an int, rather than an indirect
reference number in a link destination, the page number is already
0 based. Remove the adjustment that I'd been incorrectly doing.
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