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- use core.fileFormat to decide whether a proof file is being viewed,
- don't show the proofing button except for PDF files.
- in a proofing activity, show the page that was being viewed when
the proof was requested.
- Add extra two arguments to fz_write_gproof_file in the Android build.
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The default profile case (sRGB and SWOP CMYK) are indicated by
empty strings for those entries.
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Ghostscript device has been changed from gproof to gprf for
sanity.
Also update the non-gsapi calling code to use the same options
as the gsapi calling code.
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Setting the default post rendering ICC profile to sRGB will make the ghostscript
code use the ICC path with a SWOP CMYK device profile followed by a conversion to
sRGB for the RGB content in the gproof file.
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This will be useful for identifying when we are proofing.
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gsview on windows does not support the use of stdout and stderr.
The calls to write out to these will return 0 leading to an i/o
error from gs. To avoid this we define dummy functions that
simply return the length that was to be written. To avoid
issues with including "iapi.h" in Android builds that do not
support gproof we wrap all of gprf-doc.c in an ifdef SUPPORT_GPROOF
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Michael reports that adding -I%rom%Resource/Init/ to the args
solves some problems by ensuring that the ROM filing system
is used.
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I missed a line when refactoring code.
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We should use a void *instance, not a void **instance.
And fz_read_string is more correct than fz_read_line.
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When proofing an image without all the separations enabled, we
reconstitute it using the equivalent cmyk colors, and then
convert to rgb. The CMYK -> RGB step is important for quality,
and the whole point of GProof mode is to give the best possible
quality, so use the slower, but prettier code.
Also, fix the blatent bugs in the slower but prettier code that
I introduced when hurriedly fixpointing it.
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The code for this was broken; the wrong flag was being tested
for selection number, and the values were being assembled per
line rather than per pixel.
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Not sure if this is actually an issue at the moment, but it
potentially could be.
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Use that within gproof. The existing use of fz_read_line was broken
and was resulting in bad values for separations.
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Get separation information out to the Java level.
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Use an endian-ness independent method of reading, instead of byte swapping.
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By default in MuPDF, when we render an axis aligned image, we
'gridfit' it. This is a heuristic used to improve the rendering
of tiled images, and avoid the background showing through on the
antialiased edges.
The general algorithm we use is to expand any image outwards so that
it completely covers any pixels that it touches any part of. This is
'safe' in that we never cause any pixels to not be covered that
should otherwise be so, and is important when we have images that are
aligned with (say) line art rectangles.
For gproof files though, this gives nasty results - because we have
multiple images tiled across the page all exactly abutting, in most
cases the edges will not be on exact integer coordinates. This means
we expand both images and 1 (destination) pixel is lost. This severely
hurts the rendering (in particular on text based pages).
We therefore introduce a new type of grid fitting, where we simply
align the edges of images to the closest integer pixel. This is safe
because we know that neighbouring images will be adjusted identically
and edges will stay coincident.
We enable/disable this behaviour through a new device flag, and make
the gproof interpreter set/clear this flag when generating the page -
thus normal rendering is unaffected.
We *could* have just poked the dev->flags fields directly, but that
would require magic in the display list device to check for them
being set/unset and to poke the dev->flags fields on playback, so
instead we introduce a new fz_render_flags function (that calls a
device function) to set/unset flags.
The other attraction of this is that if we ever have devices that
'filter', we can neatly handle passing flag changes on with those.
Currently the display list implementation only copes with set/clear
of the FZ_DEVFLAG_GRIDFIT_AS_TILED option. We only readily have 6
bits available to us, so we'll just extend this as required if we
add new render flags.
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Given a document, generate a gproof file from it. This encapsulates
the name of the file, the desired resolution for proofing, and the
page dimensions of all the pages in the file.
The idea is that an app will call this when it is asked to go into
'proofing' mode, and will reinvoke itself on this file. This gives
the gprf document handler just enough information to fake up a
document of n pages of the required sizes. Each page will then be
autogenerated on demand.
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Doesn't actually trigger generation from ghostscript, or load
images from files generated by ghostscript yet.
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