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M3.59: tints of global and spot colours, tint swatches and Global colour balance

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A colour linked to a global or spot swatch keeps a tint (Paint::Solid.tint, 1 by default and
left out of files at 100 %): paint.setFill/setStroke {swatch, tint} apply the swatch at that
percentage, swatch edits recolour every linked colour at its own tint, and Color::tinted
resolves it (CMYK and Gray inks scale, RGB mixes toward white). swatch.new saves a tint as a
tint swatch ("Ink 40%") linked to its base. Spot tints separate as that percentage of their
plate (Separations Preview, PDF Separation value) instead of an ink-ratio guess. Adjust Color
Balance's Global mode (tint) shifts the tints of linked colours. The Color panel shows Tint
mode (the swatch chip, its name and a T slider) for linked colours; the Swatches panel
highlights the tint swatch in use. Gradient stops get the same link and tint fields (the
swatch walks cover them), so GradientStop is no longer Copy.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
bflatastic
2026-10-05 02:29:17 +07:00
co-authored by Claude Opus 5.5
parent e94748dc17
commit b2ececc7b4
42 changed files with 918 additions and 277 deletions
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crates/engine/src/tests_gradient.rs
+1 -1
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@@ -32,7 +32,7 @@ fn fill_gradient(s: &Session, id: NodeId) -> GradientPaint {
/// A three-stop freeform gradient with a 0.3 midpoint, partial opacity and a placed vector.
fn three_stops() -> GradientPaint {
let stop = |offset, color, opacity, midpoint| GradientStop { offset, color, opacity, midpoint };
let stop = |offset, color, opacity, midpoint| GradientStop { opacity, midpoint, ..GradientStop::new(offset, color) };
let mut g = GradientPaint::new(Gradient {
kind: GradientKind::Freeform,
stops: vec![