komo1iddinandClaude Opus 5.5 0f86ba905f M7: fold repeated image transforms into one cm instead of nesting q (#1746) ...

Moving, resizing, rotating or flipping a figure wrapped it in a fresh
`q cm … Q` every time, so twenty drags left twenty nested graphics
states and twenty `cm` operators around one `Do`. Each edit made the
content stream longer and pushed the figure closer to the nesting limit
viewers enforce (PDF 32000-1 Annex C recommends 28 levels).

When the placement already sits alone in a `q cm … Q` (its own
placement, or the wrapper an earlier edit added), `transform_image` and
`translate_images` now change that `cm` in place: the CTM inside is
`local · cm · outer` either way (8.4.4, 8.3.4), so the result is
identical. A bare `cm Do` without a `q`, a shared clip or any other
content in the scope still gets the wrapper, once.

The new test runs twenty resizes and twenty group moves on a plain
placement, one with a crop exclusive to the image, and a bare `cm Do`,
and checks the visible rectangle after each step, that the `q` depth
stays at its first-edit value, and that the following text is untouched.
It fails without this change ("twenty resizes nest no deeper than one").

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

2026-10-15 02:22:31 -04:00

..

src

M7: fold repeated image transforms into one cm instead of nesting q (#1746)

2026-10-15 02:22:31 -04:00

Cargo.toml

Preserve source fonts in text editing and resize clipped artwork (#1116)

2026-10-11 20:27:55 -04:00