Martin Vlach dd7991cb20 EMF export: pattern tiles stop at 250,000 in all ...

One pattern fill tiles at most 250,000 times (PatternDef::offsets_covering),
but Scene::fill writes each tile's own pattern fills again, down to the
nesting limit of 8, with nothing bounding the total. A pattern whose tile
art is filled with another pattern (or with itself) multiplies the tile
count at every level: a small document makes EMF export (the engine's
"emf" format, also reachable over MCP and the control channel) run out
of memory or never finish, and the unsaved document is lost with it.

The scene now keeps one tile budget for the whole walk. A fill whose
tiles don't fit in what is left, and every pattern fill after it, is
written as one colour like WMF writes patterns, with a warning.

The test tiles squares filled with dots (over half a million fills before)
and a pattern filled with itself, and checks both stay under the budget.

Reported-by: BS.ehlas.cz

2026-10-20 14:26:00 +02:00

..

src

EMF export: pattern tiles stop at 250,000 in all

2026-10-20 14:26:00 +02:00

Cargo.toml

Text: a bundled-fonts feature (on by default) lets embedders that bring their own fonts leave ours out

2026-10-16 04:19:05 +07:00