* fix(doc): bound the string bytes an expression holds and stop concatenating at the cap
* address review: count only appended characters; keep validating operands past the cap
Builds on #1618. Variables::get and Variables::collection take an exact id before a name; stored mode ids go through Collection::mode_by_id (expressions, the prototype's mode switch); font family variables and the colour picker, prototype editor and panels read stored ids exactly. Ported from fix/stored-ids-exact.
A colour variable's value in a mode can now be {"alpha": {"variable", "opacity"}} - that
variable's colour with its alpha replaced - or {"mix": {"from", "to", "t"}}, a per-channel blend
of two colour variables or literals over the stored values (in the document's colour profile),
alpha included. Calculations resolve lazily like aliases, so bound layers, mode switches,
instances and undo follow their sources; they compose, and a loop, or a calculation that reads
more than 32 variables in its collection's modes (other collections in their default modes), is
refused when it is set. Operands are stored by id and read by exact id, as stored references
are. Files keep them; REST, CSS, Penpot and .fig exports write the colour they show in each mode;
deleting a source leaves its readers on the colour they showed; library import and swap
re-point their operands. The Variables panel shows them with their formula and can swap one for
an alias or detach it to its colour.
Found while testing crates/doc/src/proto_expr.rs:172 (display writes `not {x}` with a bare var_ref) with crates/doc/src/proto_expr_parse.rs:262 (not() checks variable names before the `not` keyword)
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- Interaction editor: actions (top level and inside conditional blocks) reorder by dragging
their row's grip (list_drag, now also for lists shown in model order), one proto.action.move
per drop; the open action stays open where it lands; Escape cancels a row drag without
deselecting or closing what holds the list. The ... menu keeps Move up / Move down.
- Prototype expressions: `accent[Dark]` reads a variable's value in one mode of its collection
(Expr::InMode) and `mode(Theme)` is the name of the mode a collection is in where the
interaction runs (Expr::Mode); parsed, type-checked, displayed, stored by id (names accepted in
JSON), evaluated with the layer's modes. REST import maps VAR_MODE_LOOKUP over a variable and
one of its modes.
- Overlays opened through commands close on a click outside unless told not to, as in the editor.
- Collection::find_mode / current_mode replace repeated lookups.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
- Expressions as text: Expr::parse (variables by name, literals, and/or/not, comparisons,
arithmetic, text joins) with plain-English errors, type checks for conditions and set variable
values; display reads back as the same expression.
- New commands proto.action.add/set/remove/move and proto.conditional.addBlock/setCondition/
removeBlock edit single actions by path, inside conditionals too; `expression` text accepted by
these and proto.interaction.add/set.
- Interaction editor: an action list (open, move, remove, add), Add action > Conditional, if /
else if / else blocks with a condition builder (variable picker, operator, value or variable) or
an expression field with inline errors, nested actions, set variable expressions.
- Presenter: hotspot hints toggle (Options menu, proto.presentOptions {hotspotHints}), hotspots from
the engine (proto_run::hotspots) and in ui.inspect; an Inspect panel showing the hovered layer's
properties ({inspect}).
- Fields keep the keyboard on the click that opens them, and the Enter that commits a field no
longer reaches the shortcuts.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
PDF export
- Vector masks clip to the mask's outline, luminance masks are luminosity
soft masks (alpha masks as before).
- Background blur: the backdrop the page draws under the layer is rendered,
blurred and cut to its shape, under the layer's vector content.
- Text hyperlinks become clickable link annotations (one per line and link).
- Frames-to-PDF shares one path (`frames_pdf`): sRGB conversion for Display
P3 files, hidden frames left out, the file name as the PDF title.
- `figcraft-cli export -o x.pdf` and `convert x.figcraft x.pdf` write the
page's frames one PDF page each.
- Tests: mask types, backdrops, links, image deduplication, page sizes in
points, hostile inputs; CLI end to end. Checked by rendering the PDFs back
to PNG and diffing against the PNG export.
Prototyping
- Model: conditional actions (if / else if / else blocks), set variable mode,
and expressions (literals, variable references, + - * /, comparisons,
and/or/not, negate) for set-variable values and conditions; walk helpers
for nested actions (remap on paste, colours, destination checks, library
copies and pruning, canvas connections).
- REST import maps CONDITIONAL, SET_VARIABLE_MODE and SET_VARIABLE with
variable references and EXPRESSION values; unsupported functions (mode
lookups) skip the action with a warning.
- The presenter runs them in order (`figcraft_engine::proto_run`); the
Prototype panel summarises conditionals, edits set-variable-mode, and
`ui.set {protoEditor}` opens an interaction's editor.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Dylan M. Taylor