The PDF Optimizer and Reduce File Size downsampled colour and grey images
but not black-and-white ones. Settings::mono is now MonoSettings {
downsample, target_ppi, above_ppi, compression }, 300 ppi above 450 ppi
and CCITT Group 4 by default (Monochrome Images ▸ Downsample to;
doc_optimize mono: { downsample, ppi, above_ppi, compression }).
A 1-bit image or image mask (no filter, general-purpose filters, or CCITT
fax after any of them) and eight-bit grey of only black and white are averaged by
area: each new pixel takes the sample covering more of it, a tie 0, so a
dark line half a new pixel wide stays. They are stored as Group 4, or as
1-bit Flate when that is smaller; with Retain a resampled image keeps its
kind of compression. Images with a soft mask keep their size.
CCITT decoding moves from Export ▸ Images into pdfcraft-filters
(decode_ccitt, CcittParams, through hayro-ccitt), and
pdfcraft_cos::Document::decoded_image reads a fax image's /DecodeParms
for it (undoing filters before CCITT, such as ASCII85Decode, with any
/DecodeParms given by reference made direct first), so export
and the optimizer share one reader, and Group 4 scans can be
downsampled. A 600 ppi text page went from 79 KB to 40 KB.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BfMGHQNgdq5yf5tKZHGR3z
Group 4 images (now written by Create PDF and the optimizer) would
otherwise stop exporting: they were reported as "can't be exported
yet". A CCITT fax image (its only filter) is decoded through
hayro-ccitt with its /DecodeParms (K, Columns, Rows, EndOfBlock,
EndOfLine, EncodedByteAlign, BlackIs1), masks included; /Columns has to
be the image's width, so a hostile value can't size the buffers.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BfMGHQNgdq5yf5tKZHGR3z
A scan saved as a 1-bit PNG decodes to eight-bit grey and was stored
that way, larger than the PNG it came from; a bilevel TIFF was stored at
one bit but with Flate. Now any image of only pure black and white
(1-bit, eight-bit grey, a two-colour palette, RGB without a profile) is
stored at one bit per pixel, as CCITT Group 4 or Flate, whichever is
smaller as stored. A grey profile stays; RGB with a profile keeps its
colours.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BfMGHQNgdq5yf5tKZHGR3z
LiveCycle Designer wrote BMPs whose file header gives bfOffBits = 0. image
(0.25) seeks to that offset as given, so the pixels were read from the file
header on and the picture was drawn shifted and wrapped around (#4937).
`pdfcraft_xfa::image::bmp_with_pixel_offset` recomputes the offset from the
info header (its size, BI_BITFIELDS masks in a 40-byte header, the palette)
when the declared one lies inside the headers and the computed one fits in
the file; anything else is passed through unchanged and not copied. XFA
pictures (size and decode) and `create::from_images` both go through it, so
pdfcraft-create gains a dependency on pdfcraft-xfa (L4 -> L3).
Fixes#4937
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SqmHYx8FiWM5PcsoiErgp9
Text files were decoded with String::from_utf8_lossy wherever they are
read: Create PDF and Combine from a .txt file, the automation `create`
tool's text `path`, and Search & Redact's word list file. So
- a UTF-16 file (Windows Notepad's "Unicode") became NULs and replacement
characters ("??G?r?????e?" for "Grüße"),
- a UTF-8 byte order mark became a stray character at the start, and
- a Windows-1252 or 1254 file lost every accented letter ("caf�", "K��").
For a word list that means the words were never found and stayed
unredacted.
pdfcraft_create::decode_text picks UTF-8 or UTF-16 (LE/BE) by the byte
order mark and drops it, keeps valid UTF-8, and otherwise decodes the
Windows code page: 1254 when the bytes 1254 uses for Ğ İ Ş ğ ı ş appear
without á í ó ú (which Turkish never writes but Icelandic and Faroese,
the only Western languages using those bytes, always do), else 1252.
encoding_rs is already in the build through lopdf.
Co-authored-by: Brandon Thomas <echelon@gmail.com>
* M10: exported images keep their transparency, JPEG cut-outs included (#645)
Export all images and Save image as wrote a JPEG with a soft mask as the
bare JPEG and dropped soft masks of another size, JPEG-compressed soft
masks, stencil /Mask images and colour-key /Mask arrays, so cut-out
images came out on a solid white or black background.
- An image with transparency (/SMask, stencil /Mask, colour-key /Mask) is
written as a PNG with it as alpha, JPEG images included (decoded with
the image crate's JPEG decoder, already in the tree). JPEGs without
transparency are still written byte for byte.
- Soft and stencil masks of another size are scaled to the image's size;
/Decode inversion is honoured and /Matte pre-blending is undone.
- Image sizes are checked (positive, at most 100 Mpx) before use, so a
negative /Width no longer overflows in Save image as.
- Regression tests: JPEG + soft mask, scaled soft mask, stencil mask,
colour key, matte, and damaged masks/sizes (all fail or panic on main).
Fixes#645
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* M10: use as_chunks for colour-key pairs (clippy 1.99 chunks_exact_to_as_chunks) (#645)
Rust 1.99's clippy denies chunks_exact with a constant size, which failed
the Clippy step on all CI targets. as_chunks::<2> also drops the indexing.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---------
Co-authored-by: DWAA1660 <DWAA1660@users.noreply.github.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>
The app, crates, binaries, bundle id, packaging, icons, screenshots and docs are now
PdfCraft / pdfcraft (repo storytold/pdfcraft). On first launch the desktop app moves the
PrintCraft settings and crash-recovery folders to the new name, and both apps read settings
saved under the old storage key, so upgrades keep recent files, preferences and unsaved work.
The signing test fixtures keep their PrintCraft subject names (they are binary).
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
