4 people 3906dcdff5 Exported images keep their transparency, JPEG cut-outs included (#645) (#763) ...

* 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>

2026-10-10 16:31:41 -04:00

..

extract.rs

Exported images keep their transparency, JPEG cut-outs included (#645) (#763)

2026-10-10 16:31:41 -04:00

lib.rs

M10.2: scan JPEG metadata beyond frame headers (#764)

2026-10-10 15:46:22 -04:00

tests.rs

Exported images keep their transparency, JPEG cut-outs included (#645) (#763)

2026-10-10 16:31:41 -04:00