LYH Studio episode 6 builds every gradient from C=0 M=100 Y=0 K=0 to
C=100 M=0 Y=0 K=0. InDesign blends a gradient's process stops as inks:
halfway is C 50 M 50, a light lilac. DesignCraft converted both ends to
RGB and blended there, so the middle came out a darker violet (117, 88,
189 instead of 135, 119, 181), and every Episode 6 gradient looked
different. A midpoint between CMYK stops also became an RGB colour, so
the PDF shading turned RGB with a conversion warning.
- color: `Color::lerp` blends CMYK with CMYK (or grey), and grey with
grey, in ink space; anything with RGB still blends in RGB.
- `Gradient::display_stops`: the expanded stops plus samples through
each span that isn't RGB at both ends, for renderers that interpolate
in RGB; the screen renderer uses it.
- pdf: a midpoint's expanded stop now keeps the stops' space; the
colour-space test expects no conversion for CMYK or grey midpoints.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
LYH Studio episode 6 (8:28) gives the "1969" headline the "New Gradient
Swatch" (magenta → cyan) from the Swatches panel. InDesign runs a gradient
on text across its text frame's box. DesignCraft resolved a character
fill to one solid colour, so a gradient swatch drew no text at all.
- render: a character fill or stroke that names a gradient swatch is
painted with that gradient over the frame's box in text space (type on
a path: the path's box).
- pdf: text runs take a gradient paint: the shading is laid out in the
frame's text space and mapped into each run's origin, so skew and
horizontal scale don't bend it; outlined runs and type on a path too.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A gradient swatch on a stroke drew nothing: strokes were painted with a
single resolved colour. LYH Studio episode 6 gives the loop on the right
page (9:13) and, at first by accident, the circle (1:19, "right now it
is on the stroke") a gradient stroke.
- doc: Stroke::gradient_angle / gradient_vector (as Fill's) and
Stroke::as_fill(), the stroke's paint as a fill.
- render and PDF: a gradient stroke is painted like a gradient fill,
across the path's box (dash gaps and arrowheads keep their paints).
- engine: object.gradient {target: stroke} edits the stroke's
gradient (kind, stops, angle, the Gradient Swatch tool's from/to);
scaling moves the stroke's vector with the shape.
- IDML: GradientStrokeStart/Length/Angle round-trip.
- Gradient panel: acts on the stroke when the toolbox's Stroke box is
in front, as InDesign's follows the Fill/Stroke proxy.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
InDesign draws a radial gradient in the object's bounding box: on a
non-square frame it's an ellipse reaching the frame's sides, and a
Gradient Swatch tool drag keeps those proportions. LYH Studio episode 6
(3:16) gives the left page's background a radial gradient: magenta in
the middle, cyan out to every edge. DesignCraft drew a circle reaching
only the longer side, so a portrait page stayed purple at its sides.
- doc: `Fill::radial_ellipse(bounds)`: centre and radii (default: the
box's centre and half its width and height; with a tool vector, its
start, and its length measured with the box made square).
- render: the radial paint is that circle, stretched by the paint
transform; PDF: the shading's transform does the same.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- The two ink passes run over the area the spread's transparent objects
(opacity, blend, effects, knockout, nested or anchored) and their
effects' reach can change, not the whole view; the rest is drawn once,
through the ordinary renderer, clipped out of that area. Objects the
area touches join it whole, so no object is drawn partly through each
colour conversion (no seam). A transparent parent-page item still
takes the whole view.
- The ink passes get the render threads (effects keep their backdrop:
with_blended_filters composites the offscreen filters with the blend).
- The view is kept in the 64 MiB cache only when the ink passes ran.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A frame holding items pasted into it (Edit › Paste Into) was drawn by
its own branch in draw_item that skipped every effect: Basic Feather,
Inner Glow, shadows and the rest were stored but never drawn. LYH Studio
episode 14 (11:51) gives the outlined "GET MORE." title, with a photo
pasted into it, an Inner Glow and a Basic Feather.
Such a frame now goes the way of any other object: draw_body draws its
fill, its items clipped to the frame and its stroke, so draw_item_fx
wraps all of it. Its silhouette counts as solid for shadow spread.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Text is composed in the box around a frame's path in the frame's own
coordinates. A sheared then rotated frame turns that box past its path's
bounds, which was all a move repainted, so its text left trails behind.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The renderer painted the paper, then blended page items with it: black
text in Color Dodge over blank paper dodged the white to white and
vanished, and other modes showed the same way. In InDesign (and in PDF,
where the page group starts transparent) the paper is not a backdrop:
over blank paper an object in any blend mode shows as it is, and only
the objects below it are blended with. On spreads that use a blend mode
the items are now drawn in their own group, laid over the paper once;
other spreads render as before.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The DestIn mask now covers the whole render target (and the PDF's
exported area), with the gradient kept in item space through the paint
transform, since past the gradient's ends the end opacity carries on: a
child's long drop shadow or thick stroke is faded, not cut off at a box.
feather_bounds counts only shown children and active states, walking
nested groups without recursion.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A gradient feather on a group (Gradient Feather tool over grouped text, as
in LYH Studio's poster tutorial) did nothing on screen: groups never went
through the effects path. In PDF the group's mask was the group's own path
bounds, and a group has no path, so the mask covered a box of zero size and
hid the group.
- Item::feather_bounds: the box the feather spans, the objects' bounds for
a group.
- Render: a feathered group draws its objects in one layer, then fades it
with the same mask as other objects (fx::gradient_feather_mask).
- PDF: the group's mask spans its objects.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Separable blend formulas work channel by channel, so the spread is drawn
twice through the ordinary renderer: C, M and Y complements into RGB, K
into a second raster, with the existing transparency groups, masks,
effects and parent-page placement. The inks are converted to sRGB once and
put over the paper. Two passes regardless of how many objects blend;
parent items, nested blends and effect blends (Multiply satin, shadows)
blend in CMYK too, and the pass covers the whole view, so blending
continues past the trim. An unchanged view is reused from a one-frame
cache (64 MiB cap). Spreads with Hue, Saturation, Color or Luminosity keep
the RGB-then-proof approximation. Effect blend layers sit outside their
clips and offscreen filters, so they see the object's backdrop (RGB too).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Cycle checks walk based_on with a seen-set over all parents, so a cycle
longer than the drawing depth cap is still found. Snapping lists parent
items through shown_parent_pages instead of recursing, and offers base
items on a parent spread. A base parent's text on a parent spread is
composed for that spread, so page-number markers show its prefix.
Cmd+Shift-click hits what is drawn: it honours Show Parent Items, hidden
and locked layers, the facing-page filter and layer order. IDML import
warns when a parent spread's pages name different bases or their own
spread.
Pages draw the base parent's items, then the parent's, then their own,
on the canvas, in PDF and image export, and on the parent spread itself.
Chains are followed base first with a depth bound. Overrides, parent hit
testing and the flattener's transparency check include base items.
layout.parents.options {parent, basedOn} sets or clears the base and
refuses cycles; document.inspect reports basedOn per parent. Opening a
.designcraft or IDML file clears a cyclic or dangling base with a warning.
IDML already carried the base as the parent pages' AppliedMaster; a test
covers the round trip.
Conflict: crates/render/src/text.rs: the branch's paint_glyphs with next's fill and stroke overprint (overprint_fill / overprint_stroke, an overprinting() Multiply layer around each paint); next's cell_stroke(kind, weight, length); path text strokes don't overprint, as before
Conflict: crates/pdf/src/text.rs: the branch's text_run / paint_outlines / glyph_outlines split with next's skew tan, vertical mark offsets and split_clusters glyph order (#421)
Conflict: crates/engine/src/cmd/paths.rs: next's shatai transform + the branch's stroke_behind_fill key
Conflict: crates/idml/src/tests.rs: tests both
Conflict: docs/typography-parity.md, ROADMAP.md: headers combined, logs both
Placed rasters are converted to display sRGB once, at decode time, in one
module (designcraft-images colour):
- embedded ICC profiles in JPEG, PNG, TIFF, WebP and PSD (RGB and grey) are
applied; sRGB-like profiles leave the pixels exactly as decoded
- CMYK JPEGs (incl. YCCK, Adobe-inverted values), CMYK TIFFs and CMYK PSD
composites go through their embedded CMYK profile, else the working CMYK
space, with the colour settings' intent and black-point compensation
- oversized (> 16 MiB), unreadable or mismatched profiles are ignored with a
log line
The render image cache is rebuilt when the colour settings change. PDF/A
exports of CMYK TIFFs get the same managed RGB as the screen.
Object > Effects (Transparency..., Drop Shadow... and the rest, and their
shortcuts) and the Effects panel's fx button open the Effects dialog on
the chosen effect, turned on: the effect list with checkboxes on the left
and a summary line, the chosen page's settings on the right in the
document's units (Blending, Position with X/Y offsets, Options...),
Preview on the page while it is open, Cancel putting the page back, and
OK as one undo step.
- engine: object.effects {effects (merged, kept in range), opacity, blend}
- doc: drop and inner shadows default to InDesign's 120 degree light
- ui: dialogs::cancel (a previewing dialog reverts)
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A character attribute strokeBehindFill paints a text stroke under the fill
at double width, so its full weight lies outside the letters and they keep
their shape. Screen and PNG rendering, PDF export (stroke as outlines
first, then the filled text, so the text is not duplicated; clipped to the
outside of the glyphs when there is no fill), Create Outlines (outside-
aligned stroke), the Properties panel and Character Style Options.
IDML StrokeAlignment on CharacterStyleRange, CharacterStyle and
ParagraphStyle imports and exports as the attribute (OutsideAlignment =
on, CenterAlignment = off).
The canvas drew an underline (and a strikethrough) as one rectangle per
glyph; where two anti-aliased edges met at a fractional pixel they left
a lighter seam between the letters. Contiguous bars of the same colour
and position are merged into one, as the PDF export already does.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The DestIn mask now covers the whole render target (and the PDF's
exported area), with the gradient kept in item space through the paint
transform, since past the gradient's ends the end opacity carries on: a
child's long drop shadow or thick stroke is faded, not cut off at a box.
feather_bounds counts only shown children and active states, walking
nested groups without recursion.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A gradient feather on a group (Gradient Feather tool over grouped text, as
in LYH Studio's poster tutorial) did nothing on screen: groups never went
through the effects path. In PDF the group's mask was the group's own path
bounds, and a group has no path, so the mask covered a box of zero size and
hid the group.
- Item::feather_bounds: the box the feather spans, the objects' bounds for
a group.
- Render: a feathered group draws its objects in one layer, then fades it
with the same mask as other objects (fx::gradient_feather_mask).
- PDF: the group's mask spans its objects.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Conflict: crates/render/src/lib.rs: push_layer after next's back document-grid drawing and pop_layer before the front grid, so items never blend with the grid
Conflict: ROADMAP.md: kept both progress-log lines
The renderer painted the paper, then blended page items with it: black
text in Color Dodge over blank paper dodged the white to white and
vanished, and other modes showed the same way. In InDesign (and in PDF,
where the page group starts transparent) the paper is not a backdrop:
over blank paper an object in any blend mode shows as it is, and only
the objects below it are blended with. On spreads that use a blend mode
the items are now drawn in their own group, laid over the paper once;
other spreads render as before.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Conflict: ROADMAP.md: both progress lines
Conflict: docs/target-app-parity.md: next's header, anchored objects wrapping text added to its change list
Conflict: docs/typography-parity.md: next's header (dated 2026-10-12) with #557's change added; Text wrap row: next's text and caveat, plus "on page items and anchored objects"
Conflict: crates/compose/src/lib.rs: next's Exclusion (side, contour) with #557's after field (Exclusion::wraps_line; next's constructors and the tests' helper set None); next's contour_path and wrap_obstacles in frame_specs; next's line loop (carry, grid, wrap_slot) with the line's start byte passed to wrap_slot; wrap_slot, free_slots and estimate_slots take line_start and skip exclusions that don't wrap the line (Jump Object test and in-band edges included); #557's re-break trigger stays in the line loop
Conflict: crates/compose/src/cache.rs: next's ComposeOptions (section_marker) with #557's neighbour compositions
Conflict: crates/compose/src/tests.rs: both test blocks
Conflict: crates/render/src/damage.rs: #557's test before next's patched_diff helper
An anchored object with text wrap pushes aside the text of other stories
whose frames it overlaps on its spread, and the lines of its own story
after the line holding its anchor (custom and above-line objects). Its own
story is composed again with the objects where the previous pass placed
them until they settle, at most four more times. The composition cache
keys a story wrapped by other stories' anchored objects on their
signatures, and canvas damage repaints the stories they wrap.
#450 adds Graphic.clip; next added Graphic.wrap and Asset.pdf_box/pdf_crop. #450's tests in doc and render lack next's fields and next's tools test lacks clip; the tests didn't compile.
Conflict: ROADMAP.md: both progress lines
Conflict: docs/gaps.md: next's header, clipping paths added to its change list
Conflict: docs/target-app-parity.md: next's header, clipping paths added to its change list
Conflict: crates/doc/src/item.rs: both Graphic methods (next's shown_bounds, the branch's clip_region)
Conflict: crates/idml/src/names.rs: both imports (ClippingKind, ContourType)
Conflict: crates/idml/src/export.rs: both pushes, TextWrapPreference first, then the clipping settings
Conflict: crates/idml/src/import.rs: both lets (next's wrap, the branch's clip)
Conflict: crates/engine/src/cmd/file.rs: next's size and transform, plus clip: None
Conflict: crates/engine/src/cmd/datamerge/fill.rs: next's Graphic with wrap, plus clip: None
Conflict: crates/engine/src/cmd/mathexpr.rs: next's Graphic with wrap, plus clip: None
Conflict: crates/pdf/src/tests.rs: both tests
A placed graphic keeps its clipping path (Detect Edges, Alpha Channel,
Photoshop Path or User-Modified Path) in graphic space, with the
options IDML carries. IDML import reads ClippingPathSettings and its
saved ClippingPathGeometry (anchors capped, non-finite subpaths
dropped); export writes them back. The canvas and PDF export clip the
image to the path inside the frame clip; an inverted path shows the
image outside it. Without saved geometry nothing changes.
object.clippingPathOptions reports a graphic's clipping path, inverts
it or removes it (Object > Clipping Path > None).
Fixes#450.
Parent-page text now uses the absolute page index as its cache key, so repeated page numbers and renumbering do not reuse another page's composition.
Validation: targeted canvas and PDF regressions, plus all six cargo xtask ci gates on main after #514 (1,179 native tests passed, 3 ignored; 15 crates passed WASM compilation checks).
Task: #523
file.place sized a placed PDF page (and SVG) from its size rounded to
whole points, while the export draws the page into that size: a page of
91.774 x 613.276 pt became 92 x 613 and was drawn 0.25 % wider and
0.3 % shorter, so pieces laid edge to edge left gaps of up to 1.9 pt.
A 100.4 x 50.4 pt page placed 100.4 pt wide came out 50.2 pt tall:
`Rect { x0: 0.0, y0: 0.0, x1: 100.4, y1: 50.2 }`.
The graphic's natural size is now the exact page (crop box) or SVG size;
the rounded pixel size stays for display and preflight. place.load (the
place cursor) gets the same exact size.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
The canvas drew an underline (and a strikethrough) as one rectangle per
glyph; where two anti-aliased edges met at a fractional pixel they left
a lighter seam between the letters. Contiguous bars of the same colour
and position are merged into one, as the PDF export already does.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Show/Hide Document Grid (View > Grids & Guides, Cmd+') draws the grid
on the positions Snap to Document Grid uses: subdivision and major
lines from each page's top-left corner, across the spread's band of the
pasteboard, behind or in front of page items as the grid settings say.
Dense lines are left out at low zoom. The Properties toggle runs the
command.
A running header (or any text variable) in a parent-page frame was empty or
wrong on pages whose page number repeats an earlier one: with two sections
that both number from 1 (front matter 1-10, body 1-...), body pages 1-10
showed nothing. The renderer and PDF export passed only the page's name to
the composition cache, which looked the page up as the first page with
that name - in the front matter, before any heading.
CompositionCache::get now takes the absolute page index (None for a story's
own frames) and derives the name for page-number markers from it; the cache
is keyed by index, so two pages with the same name no longer share a
composed header. The renderer and PDF export pass first_page_of_spread + i.
Test: running_header_on_parent_page_with_repeated_page_numbers (pages named
1, 2, 1, 2; the only heading on the third page). Before the fix the third
page's header was empty (0 glyphs); with it, "Epsilon" (7).
Found with an InDesign IDML (a dictionary with two sections and Match
Character Style running headers on its parent page), together with #301.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CgGsJkVe5GYG9qK6VFdECa
file.place sized a placed PDF page (and SVG) from its size rounded to
whole points, while the export draws the page into that size: a page of
91.774 x 613.276 pt became 92 x 613 and was drawn 0.25 % wider and
0.3 % shorter, so pieces laid edge to edge left gaps of up to 1.9 pt.
A 100.4 x 50.4 pt page placed 100.4 pt wide came out 50.2 pt tall:
`Rect { x0: 0.0, y0: 0.0, x1: 100.4, y1: 50.2 }`.
The graphic's natural size is now the exact page (crop box) or SVG size;
the rounded pixel size stays for display and preflight. place.load (the
place cursor) gets the same exact size.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
