85 Commits
Author SHA1 Message Date
Trevor BrownandClaude Opus 5.5 20f02bb7c1 M12: Boards: mind maps in the document and engine (#2226, step 1) (#2228)
* M9: Boards: mind maps in the document and engine (#2226)

Part of #2226, step 1 of 4. A mind map node is a board object of its own (BoardItem::MindNode: a frame hugging its text, no box) and a branch is a connector marked `branch`; the tree is read from the branches alone. `board.mindMap` places a first node with three children and `board.mindMapAdd` adds a child or a sibling, each one undo step. The normalize pass (`board::settle_mind_maps`, `figcraft_doc::mind_layout`) lays a touched map out again from its first node: 88 between columns, 48 between siblings, each stack centred on its parent; a branch that no longer joins two layers of its page is removed. Branches are curved, stroke 4, #757575, round caps. Numbers are from a FigJam map saved and decoded. No toolbar entry, shortcuts or import yet.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Model-Effort: Opus 5.5 drove; Fable 5.1 designed; Sonnet 5.5 wrote at medium

* M12: Mind maps: a map around its own container stays put; a moved branch re-flows its old map (#2226)

A map holding a layer and something inside it is skipped by the settle pass (it never settled). Every touched branch now stirs its old ends, so re-attaching a branch's start re-flows the map it left. Boards without branches return early, a map over MIND_MAX_NODES is left whole, shift skips non-finite moves, and the doc tests share one six-node helper.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Model-Effort: Opus 5.5 drove; Fable 5.1 reviewed; Sonnet 5.5 wrote at medium

* M12: Mind maps: FigCraft's own starter texts (#2226)

A new map's starter children read "Idea 1", "Idea 2" and "Idea 3", as the design specified,
instead of the incumbent's wording, which the first commit had copied from the measurement.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Model-Effort: Opus 5.5 drove and wrote

* M12: Docs: the mind-map revision rows go in the revision history (#2226)

The 2026-11-10 rows sat in ROADMAP.md's Headline numbers table and docs/roadmap.md's Alpha gate
table; each now opens its file's revision history.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Model-Effort: Opus 5.5 drove and wrote

---------

Co-authored-by: Claude Sonnet 5.5 <noreply@anthropic.com>
2026-11-12 00:47:05 +01:00
bflatastic dbc9bf7236 Merge main into #1987 2026-11-07 10:34:16 +07:00
Trevor Brown 4b351d9468 Merge remote-tracking branch 'upstream/main' into fix/jam-connector-control-points
# Conflicts:
#	crates/doc/src/lib.rs
#	docs/boards-parity.md
#	docs/file-format-parity.md
2026-11-06 21:55:49 -05:00
BFlat 3e41f74c5d Merge pull request #1982 from storytold/fix/sec-render-bounds-budget
fix(doc): give render bounds a visit budget so a repeating child list ends
2026-11-07 10:45:35 +08:00
bflatastic 3ebd14ad2d Merge main into #1876 2026-11-07 09:10:47 +07:00
BFlat f1a8288d82 Merge pull request #2062 from storytold/carry/1943
fix(doc): stop frame_relative on a looping parent chain
2026-11-07 09:39:06 +08:00
BFlat 83054f771d Merge pull request #1971 from TrevorBrown-dev/fix/connector-end-gap
Boards: connectors attached to a side start 4 pt outside the border, as FigJam's do (#1916)
2026-11-07 09:37:24 +08:00
bflatastic 1d292f8326 Merge main into #1943 2026-11-07 08:03:47 +07:00
Trevor BrownandClaude Fable 5.1 2e331ecd70 Merge upstream/main into feat/text-style-paragraph
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
2026-11-05 16:45:00 -05:00
Trevor BrownandClaude Fable 5.1 bda7ca910d M6: a FigJam elbow connector saved with its path keeps it on import (#1910)
The `.jam` importer routed every elbowed connector itself, so one drawn around a layer by hand in
FigJam came in routed through it. FigJam saves the path as `connectorControlPoints`: one per run
between the first and the last, each a point on its run (in the connector's parent's coordinates)
with the run's axis; the first run leaves the start's side and the last arrives at the end's. They
become the `ConnectorPath::Runs` a board connector reshaped by hand has, walked by
`figcraft_doc::route_along`, so the path is kept exactly. Points that don't make such a path (off
both axes, two runs the same way in a row, a first or last run sideways to its side, more runs than
a hand could make) leave the connector to the router as before, and only connectors routed here
count in the "own routing" note. `figcraft_doc::attach_points` and `MAX_RUNS` are exported for it.
Docs: file-format-parity.md, boards-parity.md.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
2026-11-04 01:52:02 -05:00
Dylan M. Taylor ad9894a90f fix(doc): give render bounds a visit budget so a repeating child list ends 2026-11-04 04:31:52 +00:00
Dylan M. Taylor 3b4de34efe fix(doc): list a page once however often a file lists it (#1927)
Loading accepted a page id repeated in the pages list and repair kept the
repeats, so import, Fig and Penpot export and every page walk visited and
retained that page's subtree once per listing. validate now reports a
repeated page and repair drops the repeats.
2026-11-03 22:24:44 -05:00
Trevor BrownandClaude Fable 5.1 2dc7bed2a0 M12: connectors attached to a side start 4 pt outside the border (#1916)
A connector end attached to a side was routed from the middle of that side, so the stroke's
centre line started on the border and half its width plus the round cap lay on the fill, and
several connectors leaving one side piled up into a knot sticking into the card. FigJam starts
the line a few pixels outside the border and connectors leaving one side run together along the
side's normal before they fan out (the issue's screenshots). `board_route::END_GAP` (4 pt): an end
attached to a side (`RouteEnd::Box`) starts that far outside it along the side's normal; an end
placed by hand on the object (`RouteEnd::On`) keeps its exact point; a free end is unchanged.
The pinned route coordinates in the engine, format and UI tests move with it; the overlay's
attach points stay on the border. Docs: the Connectors rows, status line and history of
boards-parity.md.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
2026-11-03 21:08:19 -05:00
Dylan M. Taylor fb4d0b5035 perf(doc,engine): rebuild a widget by removing its children in one pass (#1967) 2026-11-03 17:58:27 -05:00
Dylan M. Taylor 421a8e5126 fix(doc): stop frame_relative on a looping parent chain
A restored dev snapshot can replace an ancestor with a historical
descendant while the root keeps that ancestor as its parent; frame_relative
walked the parent chain without a guard and never returned. It now stops
after more hops than the document has nodes, as is_ancestor does.
2026-11-03 04:34:50 +00:00
Trevor BrownandClaude Fable 5.1 695ca07528 M3: text styles carry paragraph spacing and indent, the list style and the OpenType features (#1829)
ParagraphStyle beside TextStyle in StyleKind::Text: style.create takes it from the layer or a value, style.apply sets it (the list on the paragraphs touched for a range), style.update moves it, editing it unlinks, .fig files keep it with the style; tests in styles_behaviour_tests and fig_export_assets_tests.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
2026-11-02 06:43:02 -05:00
BFlat b462a48346 M12: a connector's path can be reshaped by dragging its path handles (#1710) (#1717) 2026-10-31 04:53:36 +07:00
BFlat 4bcfd5247f M12: boards have 16 more shapes, in grid pickers (#1705)
* M12: boards have 16 more shapes, in grid pickers

* M12: a board shape's id and name sit in one table
2026-10-31 04:27:12 +07:00
BFlat 9f4d1ce75b M12: board votes say who voted for what, and earlier votes' results are kept (#1666)
* M12: an ended vote's results say who voted for each object

* M12: a board keeps earlier votes' results, listed in Results and deleted one at a time

* M12: the vote Results popover is drawn by small helpers, and its stepper, rows and Clear are tested
2026-10-31 01:19:03 +07:00
BFlat 9099f1d5ae M6: .fig elbowed and curved connectors without a saved path are routed, not drawn straight (#1649)
The board connector router moves, unchanged, from the engine into figcraft-doc (route_points, RouteEnd) so the .fig importer can use it: an elbowed or curved connector saved without its path runs in right angles or one curve from the side of each layer it joins (the file's magnet, else the edge its point is on, else the side facing the other end). Straight connectors are unchanged. Gap 1.
2026-10-30 17:11:22 +07:00
samhyunandClaude Opus 5.5 81f89b314b M8: a group's effects reach past what its children paint
A group or an unclipped frame applies its layer blur, drop shadows and
texture to everything its children paint, including children reaching past
its box. The renderer sized the container's layer from the union of its
children without growing it by the container's own effects, so the blur or
shadow was cut where a child's paint ended; exports of unclipped frames
lost part of the shadow the same way.

bounds_within now grows the children's union by the node's effects reach,
and render_bounds_at grows an unclipped frame's children by its effects.
The retained partial-render test drew this very cut (61 levels in its group
child scene); with the shadow counted the damage passes the partial share
of its 300 x 220 view, so the view is widened to keep it a partial render.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-30 10:51:57 +09:00
bflatastic 789fa33444 Merge main into #634 2026-10-29 12:25:06 +07:00
bflatastic a5e8330aee Merge main into #1417 2026-10-29 10:29:08 +07:00
BFlat 4a0bd79797 Merge pull request #1488 from ChristopherLinnett/issue/1086-image-validation
fix(collab): image entries must match their hash and sane bounds (#1086)
2026-10-29 09:49:20 +07:00
BFlat baaafc381b Merge pull request #1485 from StrajnarFilip/claude/fix-1476-guides-reopen
M1: page ruler guides survive save and reopen (#1476)
2026-10-29 09:29:31 +07:00
Christopher Linnett 949d74f7ca fix(collab): image checks keep documents shareable and history replayable (#1086)
- The entry size cap is figcraft_doc::ImageData::MAX_BYTES (256 MiB), the
  cap the .fig, .sketch and REST importers already read images with (now
  one constant), instead of 32 MiB: an imported image larger than 32 MiB
  made the document unjoinable and its server snapshot unrestorable.
- History written before the checks (a restored or joined snapshot, a
  replayed server log, a file published to a server) applies without the
  image entries they refuse (docprops::without_refused_images), instead of
  the file not opening or a restart dropping every edit after the image.
- A key that already holds an image can't be given other bytes: producers
  key images by their bytes (the REST importer's placeholder keys always
  hold the same picture), and merge treats a key's image as never
  changing.
- REST import: an unresolved imageRef shaped like a content hash shares
  the rest-image-missing placeholder (the placeholder's bytes don't hash to
  it); ImageData::claims_content_hash is shared with collab.
- Tests: collab image_tests (4 new, size test uses a small cap), format
  image_tests (1 new).
- Docs: collab-protocol.md, collaboration-parity.md, file-format-parity.md.
2026-10-29 08:55:03 +08:00
Christopher Linnett f1c2ee81e4 fix(collab): image entries must match their hash and sane bounds (#1086)
Image entries applied bytes to any key with no checks (audit COL-9): a
collaborator could poison the shared content-addressed image store, claim
absurd dimensions, balloon memory, or name an image `../../x`, which a
saved file then wrote as the archive member `images/../../x`.

- Every key must be 1–128 ASCII letters, digits, `-` or `_`:
  `figcraft_doc::ImageData::is_valid_key`, promoted from the format
  crate's private `is_valid_hash` so the file reader and collab share one
  rule. The reader now also takes `-` and `_`, so the REST importer's
  `rest-image-missing` placeholder survives a save and load.
- The REST importer's side of the same attack: an unresolved `imageRef`
  that can't legitimately be an archive member name (path text, an
  over-long ref) shares the `rest-image-missing` placeholder instead of
  being keyed by its raw name
  (`image_tests::a_path_like_rest_image_ref_never_names_an_archive_member`).
- A key with the shape of a content hash (64 hex chars) must be exactly
  the lowercase sha256 of the bytes, the form `image_hash` writes; an
  uppercase look-alike is refused. Other keys (svg FNV-128, REST
  placeholders) claim no content address and only meet the rules above.
- A side is at most 65 535 px; decoded bytes at most 32 MiB, with the
  base64 text capped before decoding. 0×0 stays valid: the format crate
  stores it for sizes it can't probe.
- Refusals are Error::Invalid and reject their batch, so every replica's
  store stays clean; catch-up snapshots apply through the same check.
- Docs: collab-protocol.md, collaboration-parity.md and
  file-format-parity.md (rows, status lines, histories).
- Tests: collab image_tests (8), format image_tests: round-trip and the
  REST placeholder gate.
2026-10-29 08:11:13 +08:00
Filip StrajnarandClaude Opus 5.5 652bf35b19 M1: page ruler guides survive save and reopen (#1476)
A page kept its ruler guides in `NodeKind::Page`, and since frame guides
(#70) every layer also has its own `guides` field. Both are written as
`guides`, and on reading the layer's own field takes the key, so:

- a reopened page's guides landed in the layer field and were not drawn;
- saving that page wrote `guides` twice (the page kind's list, always
  written, then the layer's), and the file no longer opened ("duplicate
  field `guides`").

Every layer, pages included, now keeps its guides in the one layer field;
the key in the file is unchanged, so existing files open with their guides.
The field reads every `guides` list a layer has, so files already saved
with the key twice open again with both lists, in file order. This also
covers collab `Create` payloads from older peers.

Regressions: JSON round trips of page and frame guides, a page with two
lists, a bad list still refused (doc); save, reopen, save, reopen through
`.figcraft` and a document.json with the key twice (format). Checked in the
app over the control channel: guides drawn after two save/reopen cycles, and
a file with the key twice opens with all its guides.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LvG6Dyzof21BCrUsByhx2w
2026-10-28 22:47:24 +01:00
Filip StrajnarandClaude Opus 5.5 d5ce10f0be M8: repair and library manifests check membership by set lookups (#1078)
Repair re-listed unlisted pages with a scan of the page list per page, and
reading a published library kept manifest styles, collections and variables
with a scan of the snapshot's lists per entry: a file with many pages or a
long manifest made both quadratic. Both now look ids up in a set built once.
validate() already indexed its parent/child edges and page list.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LvG6E2qDnjtMzfPVuEP7iH
2026-10-28 22:10:28 +01:00
Skyfuller1303 c785e96b1c Merge remote-tracking branch 'origin/main' into feat/fig-vector-region-fills
# Conflicts:
#	crates/format/src/fig/export.rs
#	crates/format/src/fig/map.rs
2026-10-28 10:12:00 +01:00
NetterSilverandClaude Haiku 5.5 f1264cf13e Reject '+' sign in NodeId::from_str
Found while testing crates/doc/src/lib.rs:64-71 (impl FromStr for NodeId), reached through crates/engine/src/automation/params.rs:78 (id_of)

Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
2026-10-27 08:35:02 +00:00
Skyfuller1303 a4076caaf4 Merge main and preserve vector region paints through path operations
Retain regional paint stacks and coordinate frames through simplify, offset, flatten, bucket normalization and Shape Builder. Preserve legacy fill semantics and synchronize importer warning catalogs. Verified with cargo xtask ci on Windows and Ubuntu/WSL, native UI screenshots, and CLI round-trip/export checks.
2026-10-26 19:50:00 +01:00
bflatastic de826e14cf Merge main into #650
# Conflicts:
#	crates/ui-egui/locales/es.toml
#	crates/ui-egui/locales/pl.toml
#	docs/prototyping-parity.md
2026-10-26 23:24:22 +07:00
BFlat 4fad29a66e M12: board timer and voting sessions (#1361)
* M12: board timer and voting

A countdown everyone on a board sees (board.timer, board.timerState), synced as its end time or the
time left while paused, and voting sessions (board.vote, board.voteResults): votes per person, on
everything, stickies or the selection; clicks vote, your badge takes a vote back; your own votes
show while it runs, everyone's with a ranked list once it ends. Timer and vote sync as document
properties and ballots as one entry per voter; neither is an undo step. A pill at the top right
of the board, new Timer, Pause and Vote icons, labels and strings in every catalog, docs.

* M12: board timer and voting on egui 0.37

Id::new is deprecated in egui 0.37: the timer and voting area and its memory ids use Id::unique.

* M12: board.vote's start and ballot changes in functions of their own (Sonar)
2026-10-26 12:28:59 +07:00
bflatastic 2fd59da54c Merge main into #1275
# Conflicts:
#	crates/doc/src/tests.rs
2026-10-26 09:15:49 +07:00
Dylan M. TaylorandClaude Sonnet 5.5 9f78875338 security: linear vector import, stroking and rounding, validation, and cyclic dev snapshots (#1306)
* security: linear vector import, stroking and rounding, validation and a cycle check for dev snapshots

Closing a subpath, rounding corners and chaining stroke runs each rescanned the whole
network per step, and Document::validate searched a parent's children per child. They now
update only the current subpath's last segment, rebuild each region loop in one pass, walk
per-vertex adjacency lists, and check edges against a once-built index. A dev snapshot whose
layers contain a cycle under the root is refused instead of reconstructed.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* fix(doc): address review findings for snapshot children and 2-segment rounded loops

---------

Co-authored-by: Claude Sonnet 5.5 <noreply@anthropic.com>
2026-10-24 21:17:36 -04:00
Ridzzz0Alam 4da6a11bad M1: render bounds stop at the depth the renderer draws (#1062)
world_render_bounds and children_render_bounds recursed once per level
with no limit, so a crafted chain of ~20,000 nested groups overflowed the
stack and aborted the app on PNG/JPG/WebP export, rasterize, copy as PNG
and thumbnails. A stack overflow is an abort, not a panic, so the guard
can't catch it.

The walk now carries a depth and stops descending at 256, the depth
draw_layer draws to (MAX_EXPORT_DEPTH): bounds match what is drawn and
shallower trees are unchanged.

Test: render_bounds_stop_where_drawing_stops_on_very_deep_chains (aborts
on the old code).
2026-10-24 11:26:27 +02:00
JimKnoxxandClaude Opus 5.5 545cd630fd M5: overlay positions relative to the layer that opens them
From the Figma forum request "Set overlay position relative to element,
not to page": an open overlay action takes anchor: screen (default) |
triggerInside | triggerOutside. With a trigger anchor the position preset
is measured on the layer that opens the overlay instead of the screen.
Outside puts top presets above it and bottom presets below it with the
edges lined up (a dropdown is Bottom left + Outside); Center centres it
on that layer. Manual is unchanged.

The interaction editor gets Relative to (Whole screen / Trigger layer)
and Inside / Outside. The player, the command (and so MCP and the
control channel) carry it; the command's params doc lists it. Figma has
no such setting, so .fig export writes it as a manual offset. Old files
and JSON without anchor read as screen and write unchanged.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-24 09:19:33 +02:00
BFlat e3e39bbc4d M6: Dev Mode measurements kept on the canvas, a read-only layers panel (#1248)
* M6: Dev Mode measurements kept on the canvas, a read-only layers panel

Measurements placed between two layers, along a side or to the layer
around one (devMode.addMeasurement / removeMeasurement / measurements),
stored on the layer they start from (saved, synced, undoable; old files
open without them), drawn in Dev Mode as labelled redlines that follow
the layers and listed, placed and removed in the Inspect tab. In Dev Mode
the layers panel only selects and expands.

* M6: Dev Mode measurements: explicit imports, a measurement row of its own (Sonar)
2026-10-24 13:33:26 +07:00
bflatastic 46b02d44e6 Batch r2-1 review: paste_nodes refuses two nodes mapped to one new id 2026-10-24 10:31:17 +07:00
bflatastic ef6a6c49b2 Merge #1185: Make is_ancestor fail closed on deep or looping parent chains (@Silvertree2010)
# Conflicts:
#	crates/doc/src/tests.rs
2026-10-24 09:21:37 +07:00
bflatastic 82004c6e9c Merge #1187: Cap the issue list returned by Document::validate (@Silvertree2010) 2026-10-24 09:21:24 +07:00
bflatastic 00074d0041 Merge #1186: Stop stale next_id from making pastes overwrite existing nodes (@Silvertree2010) 2026-10-24 09:18:16 +07:00
BFlat 8167f13a6a M12: Boards: a collaborative whiteboard file kind (#1229)
Board files (File > New board) with sticky notes, shapes with text, connectors that follow what they join (straight or elbow, arrowheads, labels), marker, highlighter and eraser, and stamps; a board toolbar and a contextual bar; the Design panel hidden on boards, Prototype and Dev Mode refused there. Boards are ordinary FigCraft files built from ordinary layers, so saving, undo, export, MCP and live sessions work unchanged. File tabs, recent files and Open files show a pen nib for design files and a note for boards (original icons drawn in code).
2026-10-24 04:18:55 +07:00
NetterSilverandClaude Haiku 5.5 c857f8d0f3 Cap the issue list returned by Document::validate
Fixes #1058

Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
2026-10-22 23:30:11 +02:00
NetterSilverandClaude Opus 5.5 8aa456b198 Stop stale next_id from making pastes overwrite existing nodes
Fixes #1064

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-22 23:23:47 +02:00
NetterSilverandClaude Haiku 5.5 5a53425f51 Make is_ancestor fail closed on deep or looping parent chains
Fixes #1066

Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
2026-10-22 23:14:57 +02:00
MortenHustedandClaude Opus 5.5 be9e72f74d M3: instances follow the variable modes their main component sets
An instance copied its main's variable modes when it was made and kept
the copy as modes of its own. Switching it to another variant kept the
old variant's modes, and a mode set on the main later never reached it.

Instances now take the modes their main sets through the link
(`Document::inherited_modes`), closer than any frame around them. Modes
set on the instance itself still win and stay through variant switches.
Bindings are re-applied for the instances of a main that chose another
mode and for an instance that switched mains. Detaching keeps the modes
the instance took from its main, and the Variable modes panel shows them
as the instance's Auto value.

Instances made before this change keep their copy as modes of their
own; setting one back to Auto lets it follow its main.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-19 09:15:34 +02:00
Andrii VolkovandClaude Opus 5.5 52eb736241 perf(render): look each layer up once per render
Node lookups in the document's B-tree were still a third of a render on a
900 000-layer file: a small subtree was walked for its bounds, again to
see whether it could be splatted, and again to splat it, and each child
of a drawn layer was looked up by paint_runs, by the mask check and by
draw_node.

- The render's table also keeps the layers it looked up, keyed with a
  multiply hash instead of SipHash (ids are counters), and so do the
  bounds it keeps.
- draw_children looks each child up once, works out the paint runs from
  those (Document::paint_runs_of) and draws the child it has.
- Whether a layer can be splatted is kept like its bounds: layers with
  children only, answers the nesting cap decided aren't kept, and kept
  answers are read only where their levels fit under the cap.

Ctx gets a second lifetime, for the document the kept layers come from.

Single-threaded cycles per 1440x900 render fitted to the page: 0.39 ->
0.34 G on a page of 246 204 layers, 0.26 -> 0.22 G on one of 118 358.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YQxjkNSUJhTkTfY74aNeki
2026-10-16 13:20:53 +03:00
Andrii VolkovandClaude Opus 5.5 4484c2d1b0 perf(render): work out paint bounds once per render
Culling a layer asked for its paint bounds, which walk its whole subtree,
and then did the same for each child: every layer's subtree was walked
again at each level above it, and once more in each parallel band. The
bounds worked out during a render are now kept for it (layers with
children only; bounds the 64-level cap cut short are not kept, and kept
ones are read only where their levels still fit under the cap, so culling
is exactly as before).

Every render also looked through every layer of the document for the
largest background blur, to size the overlap of its bands: 900 000 layers
on one large file, on the main thread before the bands start. The
document now works it out when first asked after a change, like whether
it has masks.

A 1440x900 render on a 900 000-layer file, page of 118 358 layers: at
100% 13.0 -> 0.6 ms, at 25% 16.5 -> 3.4 ms, fitted to the page 56 -> 31 ms;
page of 246 204 layers: 12.6 -> 2.5 ms, 12.1 -> 2.0 ms, 69 -> 62 ms.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YQxjkNSUJhTkTfY74aNeki
2026-10-16 12:31:55 +03:00