- designcraft-color: ICC profiles (built-in RGB working spaces, user .icc files) go through
craft-cms. The default CMYK working space is craft-cms's Coated FOGRA39; CMYK swatches show
relative colorimetric with the settings' black point compensation, as placed images do.
Generic CMYK and Device CMYK stay selectable; names of the profiles FOGRA39 stands in for
resolve to it; ColorSettings::with_known_profiles replaces unavailable saved names with the
defaults (used when the UI restores saved settings). Lab, gamut error and proofing of ICC
CMYK spaces use craft-cms transforms. The Generic CMYK output profile is encoded by craft-cms.
- designcraft-images: Profile, Transform, TransformOptions, Intent and Builtin are craft-cms's;
its black point compensation replaces the module's sRGB table. Untrusted profiles are still
ignored with a log line.
- designcraft-pdf: the PDF/X output intent is the working CMYK space's profile: the FOGRA39
built-in with identifier FOGRA39, user profiles as loaded, Generic CMYK otherwise.
- moxcms is no longer a direct dependency.
Placed rasters are converted to display sRGB once, at decode time, in one
module (designcraft-images colour):
- embedded ICC profiles in JPEG, PNG, TIFF, WebP and PSD (RGB and grey) are
applied; sRGB-like profiles leave the pixels exactly as decoded
- CMYK JPEGs (incl. YCCK, Adobe-inverted values), CMYK TIFFs and CMYK PSD
composites go through their embedded CMYK profile, else the working CMYK
space, with the colour settings' intent and black-point compensation
- oversized (> 16 MiB), unreadable or mismatched profiles are ignored with a
log line
The render image cache is rebuilt when the colour settings change. PDF/A
exports of CMYK TIFFs get the same managed RGB as the screen.
Decode the merged composite of .psd/.psb files in designcraft-images
(public file format spec) instead of the psd crate, which mapped
channels by count: grayscale with extra alpha/spot channels rendered
yellow, blue or invisible, and RGB + one spot channel was read as RGBA.
Channels now map by colour mode (Bitmap, Grayscale, Duotone, Indexed,
RGB, CMYK via the uncalibrated CMYK formula, Lab; 8 and 16 bit; raw and
PackBits). The first extra channel is the alpha only when the layer
count is negative (also via Lr16/Lr32), un-matted from white; other
extra channels are ignored. Damaged or oversized files return None
without panicking. Drops the psd dependency and its panic paths.
A CMYK TIFF went into every PDF, PDF/X-4 included, as a DeviceRGB image:
load_image sent anything that wasn't JPEG, PNG, GIF or WebP through
designcraft_images::decode_rgba, and `image` decodes CMYK TIFFs to RGB. 100%
K came out as RGB black, which the press separates as four-colour black
(#35).
designcraft-images now reads a CMYK TIFF's ink values with the tiff crate
(the version `image` already uses): 8- or 16-bit, interleaved, opaque or
with unassociated alpha. PDF export writes them through krilla's CustomImage
as DeviceCMYK, as it does a CMYK JPEG, and leaves out the TIFF's own ICC
profile so the numbers go to the output intent's press unchanged. PDF/A
exports stay RGB. A CMYK TIFF this can't read (planar, premultiplied alpha,
another ink set, over 256 MiB) is still converted, now with a warning. The
screen keeps decoding to RGB.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
aiongg