eewing
86 lines
2.6 KiB
JavaScript
86 lines
2.6 KiB
JavaScript
import { extract } from "../extract/extract.svelte.js";
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import { useMutationObserver } from "../use-mutation-observer/use-mutation-observer.svelte.js";
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import { useResizeObserver } from "../use-resize-observer/use-resize-observer.svelte.js";
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/**
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* Returns a reactive value holding the size of `node`.
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*
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* Accepts an `options` object with the following properties:
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* - `initialSize`: The initial size of the element. Defaults to `{ width: 0, height: 0 }`.
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* - `box`: The box model to use. Can be either `"content-box"` or `"border-box"`. Defaults to `"border-box"`.
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*
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* @returns an object with `width` and `height` properties.
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*
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* @see {@link https://runed.dev/docs/utilities/element-size}
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*/
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export class ElementRect {
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#rect = $state({
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x: 0,
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y: 0,
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width: 0,
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height: 0,
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top: 0,
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right: 0,
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bottom: 0,
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left: 0,
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});
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constructor(node, options = {}) {
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this.#rect = {
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width: options.initialRect?.width ?? 0,
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height: options.initialRect?.height ?? 0,
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x: options.initialRect?.x ?? 0,
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y: options.initialRect?.y ?? 0,
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top: options.initialRect?.top ?? 0,
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right: options.initialRect?.right ?? 0,
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bottom: options.initialRect?.bottom ?? 0,
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left: options.initialRect?.left ?? 0,
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};
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const el = $derived(extract(node));
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const update = () => {
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if (!el)
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return;
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const rect = el.getBoundingClientRect();
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this.#rect.width = rect.width;
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this.#rect.height = rect.height;
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this.#rect.x = rect.x;
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this.#rect.y = rect.y;
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this.#rect.top = rect.top;
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this.#rect.right = rect.right;
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this.#rect.bottom = rect.bottom;
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this.#rect.left = rect.left;
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};
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useResizeObserver(() => el, update, { window: options.window });
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$effect(update);
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useMutationObserver(() => el, update, {
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attributeFilter: ["style", "class"],
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window: options.window,
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});
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}
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get x() {
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return this.#rect.x;
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}
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get y() {
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return this.#rect.y;
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}
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get width() {
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return this.#rect.width;
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}
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get height() {
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return this.#rect.height;
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}
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get top() {
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return this.#rect.top;
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}
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get right() {
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return this.#rect.right;
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}
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get bottom() {
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return this.#rect.bottom;
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}
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get left() {
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return this.#rect.left;
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}
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get current() {
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return this.#rect;
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}
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}
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