Monorepo for Tangled
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Svelte
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127<script module lang="ts"> // each bone is [x%, y, w%, h, radius, container?, borderEdges?, hasBackground?] // json imports widen tuples to arrays, so the type stays loose type RawBone = (number | string | boolean)[]; interface Shot { width: number; height: number; bones: RawBone[]; }
/** imported by the caller so each route only ships the geometry it renders */ export interface BonesCapture { breakpoints: Record<string, Shot>; }</script>
<script lang="ts"> import { browser } from "$app/environment";
interface Props { capture: BonesCapture; class?: string; repeat?: number; /** keep a fixed-width region pinned to the right while the main region stays fluid */ fixedRightWidth?: number; /** space occupied by handles/gaps between the fluid and fixed regions */ fixedRightGap?: number; }
let { capture, class: className, repeat = 1, fixedRightWidth, fixedRightGap = 0 }: Props = $props();
// measuring would write state inside the boundary's suspension batch, which svelte rejects const width = browser ? window.innerWidth : 1024; const shot = $derived.by(() => { const widths = Object.keys(capture.breakpoints) .map(Number) .sort((a, b) => a - b); const match = widths.findLast((bp) => width >= bp) ?? widths[0]; return capture.breakpoints[String(match)] ?? null; });
const isContainer = (bone: RawBone) => bone[5] === true;
const horizontalStyle = ( x: number, w: number, captured: number, circle: boolean, height: number ): string[] => { const capturedX = (x / 100) * captured; const capturedWidth = (w / 100) * captured; const capturedMainWidth = fixedRightWidth === undefined ? 0 : captured - fixedRightWidth - fixedRightGap; const renderedMainWidth = fixedRightWidth === undefined ? 0 : width - fixedRightWidth - fixedRightGap;
if (fixedRightWidth === undefined || capturedMainWidth <= 0 || renderedMainWidth <= 0) { return [`left:${x}%`, circle ? `width:${height}px` : `width:${w}%`]; }
if (capturedX >= capturedMainWidth) { const left = width - (captured - capturedX); return [`left:${left}px`, circle ? `width:${height}px` : `width:${capturedWidth}px`]; }
const scale = renderedMainWidth / capturedMainWidth; return [ `left:${capturedX * scale}px`, circle ? `width:${height}px` : `width:${capturedWidth * scale}px` ]; };
const boneStyle = (bone: RawBone, captured: number): string => { const x = bone[0] as number; const y = bone[1] as number; const w = bone[2] as number; const h = bone[3] as number; const radius = bone[4] as number | string; const edges = (bone[6] as number) ?? 0; const background = bone[7] === true; // stretching an avatar to percentage width turns it into an oval const circle = radius === "50%" && Math.abs((w / 100) * captured - h) < 4; const fill = isContainer(bone) ? background ? "var(--color-background-default)" : "transparent" : "var(--color-background-muted)"; const border = (bit: number, side: string) => edges & bit ? `border-${side}:1px solid var(--color-border-default);` : ""; return [ ...horizontalStyle(x, w, captured, circle, h), `top:${y}px`, `height:${h}px`, `border-radius:${typeof radius === "string" ? radius : `${radius}px`}`, `background-color:${fill};`, border(1, "top"), border(2, "right"), border(4, "bottom"), border(8, "left") ].join(";"); };</script>
{#if shot} <div class={className} aria-hidden="true"> {#each Array(repeat).keys() as index (index)} <div class="relative w-full" style="height:{shot.height}px"> {#each shot.bones as bone, i (i)} <div class="absolute box-border overflow-hidden {isContainer(bone) ? '' : 'bone-pulse'}" style={boneStyle(bone, shot.width)} ></div> {/each} </div> {/each} </div>{/if}