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vectorcraft/crates
dotCooCoo 6c9933666b PDF: colorized images count as transparency for PDF 1.3 and PDF/X
A colorized grayscale or 1-bit image draws its white pixels transparent and is written to
PDF with the image as a soft mask. Node::shows_transparency did not count it, so a PDF 1.3,
PDF/X-1a or PDF/X-3 export whose only transparency was a colorized image was not flattened
and kept the soft mask. A legacy .ai save also wrote such an image as opaque.

- shows_transparency counts a visible image with a colorize paint.
- The legacy .ai writer flattens or leaves out colorized images like other see-through images.
2026-10-30 23:44:15 +07:00
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