06a7b9a7ca
Create from images (doc_create, and image_xobject for stamps, signatures and inserted images) dropped a JPEG's or PNG's embedded ICC profile, so a CMYK JPEG became untagged /DeviceCMYK. - JPEG: the APP2 ICC_PROFILE chunks are joined by sequence number; a profile with a missing or repeated chunk is ignored. - PNG: the iCCP profile is read. - A profile whose header is sound (acsp) and whose colour space matches the image (GRAY/RGB/CMYK for 1/3/4 components) becomes [/ICCBased <stream>] with /N and the device space as /Alternate. Anything else keeps the device space, as before. JPEG data and an Adobe CMYK /Decode are unchanged. - Images in one document that carry the same profile share one profile object. TIFF profiles are not read yet. Co-authored-by: lloyd <lloyd@stackworx.io> Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com> |
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| Cargo.toml | ||
| README.md | ||
README.md
pdfcraft-create
Layer L4. Create a PDF (Acrobat's Create a PDF tool), execution plan M10.2:
blank(width, height, pages): an empty document;from_images(&[(name, bytes)]): one page per image, sized from the image's resolution (PNGpHYs, JPEG JFIF density; 72 dpi when absent). JPEG data is embedded as is (/DCTDecode, grey, RGB or Adobe-inverted CMYK); PNG is decoded and stored with Flate, with transparency as a soft mask. An ICC profile in the file (JPEGAPP2 ICC_PROFILE, PNGiCCP) that matches the image's colour space is kept as an/ICCBasedcolour space with the device space as/Alternate; images with the same profile share one profile object;from_images_with_resolution(images, ImageResolution::Dpi(dpi)): override the page resolution (1–1200 dpi), without resampling or recompressing image pixels. Use 72 dpi for one point per pixel, orImageResolution::Embeddedfor the same behavior asfrom_images. The largest page side is still capped at 14,400 points;from_text(text, …): plain text set in Helvetica, wrapped and paginated.
Every function returns a pdfcraft_cos::Document; the caller writes it.