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feat(component): add raw slider #6435
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102 changes: 102 additions & 0 deletions
102
packages/components/src/components/post-slider/active-thumb.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| import { Orientation } from '@root/src'; | ||
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| interface Bounds { | ||
| min: number; | ||
| max: number; | ||
| } | ||
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| interface Neighbors { | ||
| previous: HTMLElement | null; | ||
| next: HTMLElement | null; | ||
| } | ||
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| function isThumb(node: Node | EventTarget): node is HTMLElement { | ||
| return node instanceof HTMLElement && node.matches('[role="slider"]'); | ||
| } | ||
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| function getValueNow(thumb: HTMLElement): number { | ||
| return parseFloat(thumb.getAttribute('aria-valuenow')); | ||
| } | ||
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| export class ActiveThumb { | ||
| el: HTMLElement; | ||
| neighbors: Neighbors; | ||
| positionBounds: Bounds; | ||
| hostBounds: Bounds; | ||
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| private host: HTMLElement; | ||
| private relativePosition = 0; | ||
| private isPositionUpdating = false; | ||
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| get isOnlyThumb(): boolean { | ||
| return !this.neighbors.previous && !this.neighbors.next; | ||
| } | ||
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| get isFirstThumb(): boolean { | ||
| return !this.isOnlyThumb && !this.neighbors.previous; | ||
| } | ||
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| get value(): number { | ||
| return getValueNow(this.el); | ||
| } | ||
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| get neighborValues(): { previous: number | null; next: number | null } { | ||
| const previousValue = this.neighbors.previous ? getValueNow(this.neighbors.previous) : null; | ||
| const nextValue = this.neighbors.next ? getValueNow(this.neighbors.next) : null; | ||
| return { previous: previousValue, next: nextValue }; | ||
| } | ||
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| constructor(node: Node | EventTarget, host: HTMLElement, orientation: Orientation) { | ||
| if (!isThumb(node)) throw Error('An active thumb must be an HTML element with a slider role.'); | ||
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| this.el = node; | ||
| this.neighbors = { | ||
| previous: isThumb(this.el.previousSibling) ? this.el.previousSibling : null, | ||
| next: isThumb(this.el.nextSibling) ? this.el.nextSibling : null, | ||
| }; | ||
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| this.host = host; | ||
| this.hostBounds = this.getHostBounds(host, orientation); | ||
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| const minBound = this.neighbors.previous | ||
| ? this.getOffset(this.neighbors.previous, orientation) | ||
| : this.hostBounds.min; | ||
| const maxBound = this.neighbors.next | ||
| ? this.getOffset(this.neighbors.next, orientation) | ||
| : this.hostBounds.max; | ||
| this.positionBounds = { min: minBound, max: maxBound }; | ||
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| this.updatePosition = this.updatePosition.bind(this); | ||
| } | ||
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| private getHostBounds(host: HTMLElement, orientation: Orientation): Bounds { | ||
| const rect = host.getBoundingClientRect(); | ||
| return orientation === 'vertical' | ||
| ? { min: rect.top, max: rect.bottom } | ||
| : { min: rect.left, max: rect.right }; | ||
| } | ||
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| private getOffset(el: HTMLElement, orientation: Orientation): number { | ||
| const rect = el.getBoundingClientRect(); | ||
| return orientation === 'vertical' ? rect.top + rect.height / 2 : rect.left + rect.width / 2; | ||
| } | ||
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| private updatePosition() { | ||
| this.isPositionUpdating = true; | ||
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| const cssProperty = this.isFirstThumb ? '--post-slider-fill-start' : '--post-slider-fill-end'; | ||
| this.host.style.setProperty(cssProperty, this.relativePosition.toString()); | ||
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| requestAnimationFrame(this.updatePosition); | ||
| } | ||
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| setValue(value: number, relativePosition: number) { | ||
| this.el.setAttribute('aria-valuenow', value.toString()); | ||
| this.neighbors.previous?.setAttribute('aria-valuemax', value.toString()); | ||
| this.neighbors.next?.setAttribute('aria-valuemin', value.toString()); | ||
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| // updating position depending on the animation frame rate | ||
| this.relativePosition = relativePosition; | ||
| if (!this.isPositionUpdating) this.updatePosition(); | ||
| } | ||
| } | ||
3 changes: 3 additions & 0 deletions
3
packages/components/src/components/post-slider/orientation.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,3 @@ | ||
| export const ORIENTATIONS = ['horizontal', 'vertical'] as const; | ||
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| export type Orientation = (typeof ORIENTATIONS)[number]; |
85 changes: 85 additions & 0 deletions
85
packages/components/src/components/post-slider/post-slider.scss
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| @use '@swisspost/design-system-styles/variables/elevation'; | ||
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| :host { | ||
| --post-slider-thumb-size: 1.75rem; | ||
| --post-slider-track-size: .75rem; | ||
| --post-slider-fill-start: 0; | ||
| --post-slider-fill-end: 1; | ||
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| display: block; | ||
| position: relative; | ||
| height: var(--post-slider-thumb-size); | ||
| container-type: inline-size; | ||
| touch-action: none; | ||
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| &::before, | ||
| &::after { | ||
| content: ''; | ||
| display: block; | ||
| position: absolute; | ||
| inset-block: calc(50% - var(--post-slider-track-size) / 2); | ||
| inset-inline: 0; | ||
| } | ||
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| // slider track | ||
| &::before { | ||
| background-color: #f0efed; | ||
| } | ||
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| // slider fill | ||
| &::after { | ||
| --post-slider-fill-scale: calc(var(--post-slider-fill-end) - var(--post-slider-fill-start)); | ||
| background-color: #050400; | ||
| transform-origin: left; | ||
| transform: translateX(calc(var(--post-slider-fill-start) * 100cqw)) scaleX(var(--post-slider-fill-scale)); | ||
| } | ||
|
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| // slider thumbs | ||
| [role="slider"] { | ||
| --post-slider-thumb-scale: 1; | ||
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| z-index: 1; | ||
| box-sizing: border-box; | ||
| height: var(--post-slider-thumb-size); | ||
| width: var(--post-slider-thumb-size); | ||
| margin-inline-start: calc(var(--post-slider-thumb-size) / -2); | ||
| position: absolute; | ||
| inset-block-start: 0; | ||
| inset-inline-start: 0; | ||
| background-color: #050400; | ||
| border: 3px solid #fff; | ||
| border-radius: 50%; | ||
| box-shadow: elevation.$elevation-100; | ||
| will-change: transform; | ||
| transform: translateX(calc(var(--post-slider-thumb-position) * 100cqw)) scale(var(--post-slider-thumb-scale)); | ||
| transition: background-color 200ms; | ||
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| &:not(:last-child) { | ||
| --post-slider-thumb-position: var(--post-slider-fill-start); | ||
| } | ||
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| &:last-child { | ||
| --post-slider-thumb-position: var(--post-slider-fill-end); | ||
| } | ||
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| &:is(:hover, .active) { | ||
| background-color: #504f4b; | ||
| } | ||
| } | ||
| } | ||
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| :host([orient="vertical"]) { | ||
| writing-mode: vertical-lr; | ||
| height: unset; | ||
| min-height: 15rem; | ||
| width: var(--post-slider-thumb-size); | ||
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| &::after { | ||
| transform-origin: top; | ||
| transform: translateY(calc(var(--post-slider-fill-start) * 100cqh)) scaleY(var(--post-slider-fill-scale)); | ||
| } | ||
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| [role="slider"] { | ||
| transform: translateY(calc(var(--post-slider-thumb-position) * 100cqh)) scale(var(--post-slider-thumb-scale)); | ||
| } | ||
| } |
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The constructor is only called
onPointerDownof the div with therole="slider", thereforeisThumb(node)should always be true so I'm not sure it's worth checking here.