Module theme 

The tray UI’s look: two palettes (dark, light) held to WCAG 2.2 AA contrast by tests, the egui visuals and style built from them, and the soft “breathing” glow of running work.

Structs

Palette

Every colour the UI paints with.

Enums

ThemeChoice

The operator’s theme choice (Config → This window).

Tone

What a colour means.

Constants

BREATH_PERIOD_SECS

One breath of the running glow, in seconds: slow enough to read as calm.

CARD_RADIUS

Corner radius of cards and panels, in points.

CONTROL_RADIUS

Corner radius of buttons, inputs and pills, in points.

NON_TEXT_CONTRAST_MIN

WCAG 2.2 AA minimum contrast for indicators and focus rings (1.4.11).

TEXT_CONTRAST_MIN

WCAG 2.2 AA minimum contrast for text (1.4.3).

Functions

apply

Apply both palettes and the operator’s theme choice to ctx.

breath

How strongly running work glows at time t (seconds), 0.35 to 1.0: one slow breath per BREATH_PERIOD_SECS. Reduce motion holds it steady at full strength.

contrast_ratio

WCAG contrast ratio between two opaque colours, 1.0 to 21.0.

luminance

WCAG relative luminance of an opaque colour.

stroke

A stroke of width points (typed, so float literals never fall back).

style_tweaks

Type scale and spacing, the same in both themes.

visuals

The egui visuals of palette.

with_alpha

colour at alpha (0..=1), for glows over any background.