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M3.60: gradient swatches and stops linked to global and spot swatches

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Applying a gradient swatch records it as the gradient's swatch (the Swatches panel highlights
it and the Gradient panel's swatch menu marks it). A stop given a global or spot swatch (and a
tint) in paint.editGradient / a gradient paint's stops, dropped from the Swatches panel or
picked in the stop popover stays linked: editing the swatch recolours it, in art and in
gradient swatches, deleting it unlinks it. Spot stops separate on their plate, and a gradient
whose stops are all tints of one spot ink (or paper white) exports to PDF as a Separation
shading; gradients mixing models are written in one colour space (the PDF writer requires it;
mixed models used to abort the export).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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bflatastic
2026-10-05 02:29:19 +07:00
co-authored by Claude Opus 5.5
parent b2ececc7b4
commit 7227e295ea
10 changed files with 358 additions and 33 deletions
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@@ -444,3 +444,17 @@ colours and leaves the rest alone.
{"name":"run_command","arguments":{"command":"paint.setFill","params":{"swatch":"Ink","tint":40}}}
{"name":"run_command","arguments":{"command":"edit.colors.adjustBalance","params":{"mode":"global","tint":-20}}}
```
## Linked gradient stops
Applying a gradient swatch (`paint.setFill {swatch}`) records it as the gradient's `swatch` (the Swatches panel
highlights it; new stops drop the link). A gradient stop can link to a global or spot swatch like a solid colour:
give it `swatch` (and `tint` %, default 100 or a tint swatch's own) instead of `color` in `paint.editGradient
{stops}` or a `gradient` paint's stops. Editing or deleting the swatch then recolours or unlinks the stop, in art and
in gradient swatches. A spot stop separates on its plate; a gradient whose stops are all tints of one spot ink (or
paper white, 0 %) exports to PDF as a Separation shading (the writer has no DeviceN, so a gradient mixing a spot
ink with other colours is written in process colours, with a warning).
```json
{"name":"run_command","arguments":{"command":"paint.editGradient","params":{"stops":[{"offset":0,"swatch":"Ink"},{"offset":1,"swatch":"Ink","tint":20}]}}}
```