3 people 15d82b5b9c fix(render): a Multiply highlight inside a transparency group keeps the text (#1968) (#2027) ...

Highlight appearances written by other editors are a transparency group whose
content is filled with `/BM /Multiply`. Every `/Group` form got a layer of its
own, so the Multiply blended with that layer's transparent backdrop and the
layer then covered the page as an opaque block.

Vendored hayro-interpret patch (28): a group that is neither isolated nor
knockout composites its elements with the backdrop (ISO 32000-2 §11.4.7), so
when it is entered at full opacity with no soft mask and Normal blending there
is nothing for a layer to add, and its content is drawn straight onto the page.
`/I` and `/K` are read from the group dictionary. An isolated group keeps its
blank backdrop; a knockout group or one entered at partial opacity, under a
soft mask or with a blend mode keeps its layer.

Test: `raster::tests::a_multiply_highlight_inside_a_transparency_group_keeps_the_text`
(the appearance drawn as an annotation and from page content, with `/I false
/K false` spelled out and with no group at all; an isolated group as a control;
a group entered at half opacity still composited as one). It fails before the
fix with the text pixel yellow instead of black. parity: view.render-transparency
cites it and says what is still approximated.


Claude-Session: https://claude.ai/code/session_01RUNQSPVXx3dDBabRZHAnjz

Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>

2026-10-15 02:39:16 -04:00

..

examples

M2: Bound literal text search with prefix matching (#1725)

2026-10-15 02:21:53 -04:00

src

fix(render): a Multiply highlight inside a transparency group keeps the text (#1968) (#2027)

2026-10-15 02:39:16 -04:00

tests

M2: Bound literal text search with prefix matching (#1725)

2026-10-15 02:21:53 -04:00

Cargo.toml

Reading colours: replace document colours for reading comfort (#897) (#1270)

2026-10-12 02:49:31 -04:00