Andreas Reinhold / reiniandClaude Opus 5
bb9473b0b2
Plan step 23, containment.md § Missing ("Carousel: the uncontained
multi-aspect-ratio layout"). `<x-carousel layout="multi-aspect">` is the
layout M3 added in November 2025: each `<x-carousel-item aspect="…">`
keeps its own ratio at the row's fixed height, held inside M3's 9:16 to
16:9 range (a square by default), with 16dp leading padding, 8dp gaps,
the extra-large corner and uncontained (default) scrolling.
The keyline machinery does not fit it: an Arrangement counts items of
one size each, and every snap position and mask follows from that size.
So the layout is a plain flex row, unmasked, and carousel.js only
measures each item's resting position off the DOM, which keeps the
previous/next buttons, the arrow keys, Home/End and bring-into-view
working. The header and SKILL.md say so.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9
101 lines
4.8 KiB
PHP
101 lines
4.8 KiB
PHP
{{-- One item of an `<x-carousel>`: a slide of art — an `<img>`, which fills and crops to the
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item, or any element sized `size-full`.
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<x-carousel-item label="Lake Constance">
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<img src="{{ $photo->url }}" alt="Lake Constance at dusk" />
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</x-carousel-item>
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`label` lays a short line of text over the bottom of the art, on a scrim, pinned to the
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item's visible edge and fading out as the item narrows — Compose's carousel sample, which
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fades its label chip in once the mask is wide enough to hold it. The scrim is what M3 asks
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for under text on an image, and the scrim is `--md-sys-color-scrim` — black in every scheme,
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theme and contrast level — so its ink is the one absolute the theme keeps, `white`; a role
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(`inverse-on-surface`) is dark ink in a dark scheme and fails on the scrim there.
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A focusable `group` with `aria-roledescription="slide"`, named "n of m" by the carousel
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around it. M3 puts the tab stop on the item, not on the row: Tab reaches the first item, the
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arrow keys move between them and Space or Enter opens the focused one
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(docs/reference/m3/components-actions-communication-containment.md § Carousel →
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Accessibility). The item is laid out at the carousel's large size and masked:
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the surface inside is clipped by `--material-carousel-inset` from both sides with M3's
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extra-large corner (28px, CarouselDefaults' item shape) and moved by
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`--material-carousel-shift`, both written by resources/js/carousel.js. Without script the
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item shows unmasked, at its `item-width`. In a `full-screen` carousel it is none of that: the
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item fills the row, edge to edge, with no corner and no mask.
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In a `multi-aspect` carousel the item is as wide as its own `aspect` makes it at the row's
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height, and nothing masks it: M3's uncontained multi-aspect-ratio layout is for items whose
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widths "vary… ranging from a 9:16 minimum to a 16:9 maximum aspect ratio", so `aspect` is
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held inside that range (`16/9`, `16:9` or a plain number; a square by default, and ignored in
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every other layout, where the keylines size the items)
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(docs/reference/m3/components-actions-communication-containment.md § Carousel → Variants,
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Specs). Only inside `<x-carousel>`. --}}
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@props([
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'label' => null,
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'aspect' => null,
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])
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{{-- The layout of the `<x-carousel>` around it: the full-screen one is a vertical row of
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edge-to-edge items, which M3 gives no corner and no mask, and the multi-aspect one sizes each
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item by its own aspect ratio and masks none of them. --}}
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@aware([
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'layout' => 'multi-browse',
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])
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@php
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$vertical = $layout === 'full-screen';
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$multiAspect = $layout === 'multi-aspect';
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// M3's 9:16 minimum and 16:9 maximum. `16/9`, `16:9` and `1.78` all say the same thing.
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$ratio = null;
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if ($multiAspect) {
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$value = $aspect ?? 1;
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if (is_string($value) && preg_match('/^\s*([\d.]+)\s*[\/:]\s*([\d.]+)\s*$/', $value, $parts) && (float) $parts[2] > 0) {
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$value = (float) $parts[1] / (float) $parts[2];
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}
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$ratio = round(min(max((float) $value, 9 / 16), 16 / 9), 4);
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}
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@endphp
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<div {{ $attributes
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->class([
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'focus-ring relative h-full shrink-0 snap-start snap-always focus-visible:-outline-offset-3',
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'w-full' => $vertical,
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'w-auto rounded-corner-xl' => $multiAspect,
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'w-(--material-carousel-slot) max-w-full rounded-corner-xl' => ! $vertical && ! $multiAspect,
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])
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->merge(array_filter([
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'role' => 'group',
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'aria-roledescription' => __('slide'),
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'aria-label' => '[material-carousel-position]',
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'data-material-carousel-item' => true,
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'tabindex' => '0',
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'style' => $ratio === null ? null : "aspect-ratio: {$ratio}",
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], fn ($value): bool => $value !== null)) }}>
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<div
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data-material-carousel-surface
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@class([
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'relative size-full overflow-hidden bg-surface-container-highest text-on-surface',
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'rounded-corner-xl' => $multiAspect,
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'rounded-corner-xl translate-x-(--material-carousel-shift) [clip-path:inset(0_var(--material-carousel-inset,0px)_round_var(--md-sys-shape-corner-xl))]' => ! $vertical && ! $multiAspect,
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])
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>
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<div data-material-carousel-content class="size-full [&>img]:size-full [&>img]:object-cover">
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{{ $slot }}
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</div>
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@if (filled($label))
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<div
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data-material-carousel-label
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class="pointer-events-none absolute inset-x-0 bottom-0 flex bg-linear-to-t from-scrim/60 to-transparent px-4 pt-10 pb-4 opacity-(--material-carousel-label)"
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>
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<span class="truncate type-title-md text-white translate-x-(--material-carousel-label-shift)">{{ $label }}</span>
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</div>
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@endif
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</div>
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</div>
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