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Adaptive UI: Fix circular palette reference (#180)
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6 files changed

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‎change/@adaptive-web-adaptive-ui-1d8f42fa-b2d9-4b19-a179-23ce4bf2b329.json

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{
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"type": "patch",
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"comment": "Adaptive UI: Fix circular palette reference",
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"packageName": "@adaptive-web/adaptive-ui",
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"email": "47367562+bheston@users.noreply.github.com",
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"dependentChangeType": "patch"
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}

‎packages/adaptive-ui/src/color/index.ts

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export * from "./recipes/index.js";
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export * from "./utilities/index.js";
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export * from "./color.js";
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export * from "./palette-base.js";
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export * from "./palette-okhsl.js";
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export * from "./palette-rgb.js";
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export * from "./palette.js";

‎packages/adaptive-ui/src/color/palette-base.ts

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import { Color } from "./color.js";
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import { Palette, PaletteDirection, PaletteDirectionValue, resolvePaletteDirection } from "./palette.js";
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import { Swatch } from "./swatch.js";
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import { binarySearch } from "./utilities/binary-search.js";
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import { directionByIsDark } from "./utilities/direction-by-is-dark.js";
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import { contrast, RelativeLuminance } from "./utilities/relative-luminance.js";
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/**
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* A base {@link Palette} with a common implementation of the interface. Use PaletteRGB for an implementation
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* of a palette generation algorithm that is ready to be used directly, or extend this class to generate custom Swatches.
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*
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* @public
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*/
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export class BasePalette<T extends Swatch> implements Palette<T> {
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/**
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* {@inheritdoc Palette.source}
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*/
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readonly source: Color;
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/**
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* {@inheritdoc Palette.swatches}
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*/
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readonly swatches: ReadonlyArray<T>;
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/**
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* An index pointer to the end of the palette.
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*/
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readonly lastIndex: number;
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/**
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* A copy of the `Swatch`es in reverse order, used for optimized searching.
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*/
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readonly reversedSwatches: ReadonlyArray<T>;
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/**
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* Cache from `relativeLuminance` to `Swatch` index in the `Palette`.
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*/
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readonly closestIndexCache = new Map<number, number>();
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/**
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* Creates a new Palette.
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*
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* @param source - The source color for the Palette
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* @param swatches - All Swatches in the Palette
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*/
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constructor(source: Color, swatches: ReadonlyArray<T>) {
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this.source = source;
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this.swatches = swatches;
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this.reversedSwatches = Object.freeze([...this.swatches].reverse());
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this.lastIndex = this.swatches.length - 1;
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}
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/**
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* {@inheritdoc Palette.colorContrast}
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*/
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colorContrast(
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reference: RelativeLuminance,
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contrastTarget: number,
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initialSearchIndex?: number,
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direction: PaletteDirection = directionByIsDark(reference)
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): T {
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if (initialSearchIndex === undefined) {
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initialSearchIndex = this.closestIndexOf(reference);
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}
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let source: ReadonlyArray<T> = this.swatches;
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const endSearchIndex = this.lastIndex;
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let startSearchIndex = initialSearchIndex;
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const condition = (value: T) => contrast(reference, value) >= contrastTarget;
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if (direction === PaletteDirectionValue.lighter) {
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source = this.reversedSwatches;
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startSearchIndex = endSearchIndex - startSearchIndex;
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}
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return binarySearch(source, condition, startSearchIndex, endSearchIndex);
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}
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/**
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* {@inheritdoc Palette.delta}
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*/
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delta(reference: RelativeLuminance, delta: number, direction: PaletteDirection): T {
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const dir = resolvePaletteDirection(direction);
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return this.get(this.closestIndexOf(reference) + dir * delta);
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}
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/**
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* {@inheritdoc Palette.closestIndexOf}
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*/
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closestIndexOf(reference: RelativeLuminance): number {
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if (this.closestIndexCache.has(reference.relativeLuminance)) {
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/* eslint-disable-next-line @typescript-eslint/no-non-null-assertion */
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return this.closestIndexCache.get(reference.relativeLuminance)!;
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}
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let index = this.swatches.indexOf(reference as T);
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if (index !== -1) {
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this.closestIndexCache.set(reference.relativeLuminance, index);
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return index;
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}
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const closest = this.swatches.reduce((previous, next) =>
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Math.abs(next.relativeLuminance - reference.relativeLuminance) <
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Math.abs(previous.relativeLuminance - reference.relativeLuminance)
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? next
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: previous
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);
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index = this.swatches.indexOf(closest);
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this.closestIndexCache.set(reference.relativeLuminance, index);
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return index;
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}
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/**
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* Ensures that an input number does not exceed a max value and is not less than a min value.
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*
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* @param i - the number to clamp
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* @param min - the maximum (inclusive) value
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* @param max - the minimum (inclusive) value
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*/
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private clamp(i: number, min: number, max: number): number {
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if (isNaN(i) || i <= min) {
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return min;
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} else if (i >= max) {
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return max;
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}
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return i;
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}
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/**
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* {@inheritdoc Palette.get}
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*/
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get(index: number): T {
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return this.swatches[index] || this.swatches[this.clamp(index, 0, this.lastIndex)];
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}
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}

‎packages/adaptive-ui/src/color/palette-okhsl.ts

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import { clampChroma, interpolate, modeOkhsl, modeRgb, samples, useMode} from "culori/fn";
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import { Color } from "./color.js";
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import { BasePalette } from "./palette.js";
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import { BasePalette } from "./palette-base.js";
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import { Swatch } from "./swatch.js";
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import { _black, _white } from "./utilities/color-constants.js";
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‎packages/adaptive-ui/src/color/palette-rgb.ts

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import { clampRgb, type Hsl, interpolate, modeHsl, modeLab, modeRgb, type Rgb, useMode } from "culori/fn";
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import { BasePalette } from "./palette.js";
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import { BasePalette } from "./palette-base.js";
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import { Swatch } from "./swatch.js";
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import { contrast } from "./utilities/relative-luminance.js";
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import { _black, _white } from "./utilities/color-constants.js";

‎packages/adaptive-ui/src/color/palette.ts

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import { Color } from "./color.js";
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import { Swatch } from "./swatch.js";
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import { binarySearch } from "./utilities/binary-search.js";
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import { directionByIsDark } from "./utilities/direction-by-is-dark.js";
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import { contrast, RelativeLuminance } from "./utilities/relative-luminance.js";
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import { RelativeLuminance } from "./utilities/relative-luminance.js";
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/**
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* Directional values for navigating {@link Swatch}es in {@link Palette}.
@@ -111,137 +109,3 @@ export interface Palette<T extends Swatch = Swatch> {
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*/
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get(index: number): T;
113111
}
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/**
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* A base {@link Palette} with a common implementation of the interface. Use PaletteRGB for an implementation
117-
* of a palette generation algorithm that is ready to be used directly, or extend this class to generate custom Swatches.
118-
*
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* @public
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*/
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export class BasePalette<T extends Swatch> implements Palette<T> {
122-
/**
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* {@inheritdoc Palette.source}
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*/
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readonly source: Color;
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/**
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* {@inheritdoc Palette.swatches}
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*/
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readonly swatches: ReadonlyArray<T>;
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/**
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* An index pointer to the end of the palette.
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*/
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readonly lastIndex: number;
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/**
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* A copy of the `Swatch`es in reverse order, used for optimized searching.
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*/
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readonly reversedSwatches: ReadonlyArray<T>;
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/**
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* Cache from `relativeLuminance` to `Swatch` index in the `Palette`.
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*/
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readonly closestIndexCache = new Map<number, number>();
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/**
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* Creates a new Palette.
149-
*
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* @param source - The source color for the Palette
151-
* @param swatches - All Swatches in the Palette
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*/
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constructor(source: Color, swatches: ReadonlyArray<T>) {
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this.source = source;
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this.swatches = swatches;
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this.reversedSwatches = Object.freeze([...this.swatches].reverse());
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this.lastIndex = this.swatches.length - 1;
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}
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/**
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* {@inheritdoc Palette.colorContrast}
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*/
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colorContrast(
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reference: RelativeLuminance,
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contrastTarget: number,
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initialSearchIndex?: number,
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direction: PaletteDirection = directionByIsDark(reference)
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): T {
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if (initialSearchIndex === undefined) {
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initialSearchIndex = this.closestIndexOf(reference);
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}
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let source: ReadonlyArray<T> = this.swatches;
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const endSearchIndex = this.lastIndex;
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let startSearchIndex = initialSearchIndex;
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const condition = (value: T) => contrast(reference, value) >= contrastTarget;
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if (direction === PaletteDirectionValue.lighter) {
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source = this.reversedSwatches;
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startSearchIndex = endSearchIndex - startSearchIndex;
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}
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return binarySearch(source, condition, startSearchIndex, endSearchIndex);
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}
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/**
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* {@inheritdoc Palette.delta}
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*/
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delta(reference: RelativeLuminance, delta: number, direction: PaletteDirection): T {
192-
const dir = resolvePaletteDirection(direction);
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return this.get(this.closestIndexOf(reference) + dir * delta);
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}
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/**
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* {@inheritdoc Palette.closestIndexOf}
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*/
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closestIndexOf(reference: RelativeLuminance): number {
200-
if (this.closestIndexCache.has(reference.relativeLuminance)) {
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/* eslint-disable-next-line @typescript-eslint/no-non-null-assertion */
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return this.closestIndexCache.get(reference.relativeLuminance)!;
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}
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let index = this.swatches.indexOf(reference as T);
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207-
if (index !== -1) {
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this.closestIndexCache.set(reference.relativeLuminance, index);
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return index;
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}
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const closest = this.swatches.reduce((previous, next) =>
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Math.abs(next.relativeLuminance - reference.relativeLuminance) <
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Math.abs(previous.relativeLuminance - reference.relativeLuminance)
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? next
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: previous
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);
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index = this.swatches.indexOf(closest);
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this.closestIndexCache.set(reference.relativeLuminance, index);
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return index;
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}
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/**
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* Ensures that an input number does not exceed a max value and is not less than a min value.
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*
228-
* @param i - the number to clamp
229-
* @param min - the maximum (inclusive) value
230-
* @param max - the minimum (inclusive) value
231-
*/
232-
private clamp(i: number, min: number, max: number): number {
233-
if (isNaN(i) || i <= min) {
234-
return min;
235-
} else if (i >= max) {
236-
return max;
237-
}
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return i;
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}
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/**
242-
* {@inheritdoc Palette.get}
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*/
244-
get(index: number): T {
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return this.swatches[index] || this.swatches[this.clamp(index, 0, this.lastIndex)];
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}
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}

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