379 lines
10 KiB
Vue
379 lines
10 KiB
Vue
<template>
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<div ref="root">
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<XBanner v-for="media in mediaList.filter(media => !previewable(media))" :key="media.id" :media="media"/>
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<div v-if="mediaList.filter(media => previewable(media)).length > 0" :class="$style.container">
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<div
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ref="gallery"
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:class="[
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$style.medias,
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count === 1 ? [$style.n1, {
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[$style.n116_9]: defaultStore.reactiveState.mediaListWithOneImageAppearance.value === '16_9',
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[$style.n11_1]: defaultStore.reactiveState.mediaListWithOneImageAppearance.value === '1_1',
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[$style.n12_3]: defaultStore.reactiveState.mediaListWithOneImageAppearance.value === '2_3',
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}] : count === 2 ? $style.n2 : count === 3 ? $style.n3 : count === 4 ? $style.n4 : $style.nMany,
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]"
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>
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<template v-for="media in mediaList.filter(media => previewable(media))">
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<XVideo v-if="media.type.startsWith('video')" :key="`video:${media.id}`" :class="$style.media" :video="media"/>
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<XImage v-else-if="media.type.startsWith('image')" :key="`image:${media.id}`" :class="$style.media" class="image" :data-id="media.id" :image="media" :raw="raw"/>
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</template>
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</div>
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</div>
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</div>
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</template>
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<script lang="ts">
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/**
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* アスペクト比算出のためにHTMLElement.clientWidthを使うが、
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* 大変重たいのでコンテナ要素とメディアリスト幅のペアをキャッシュする
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* （タイムラインごとにスクロールコンテナが存在する前提だが……）
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*/
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const widthCache = new Map<Element, number>();
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/**
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* コンテナ要素がリサイズされたらキャッシュを削除する
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*/
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const ro = new ResizeObserver(entries => {
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for (const entry of entries) {
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widthCache.delete(entry.target);
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}
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});
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async function getClientWidthWithCache(targetEl: HTMLElement, containerEl: HTMLElement, count = 0) {
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if (_DEV_) console.log('getClientWidthWithCache', { targetEl, containerEl, count, cache: widthCache.get(containerEl) });
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if (widthCache.has(containerEl)) return widthCache.get(containerEl)!;
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const width = targetEl.clientWidth;
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if (count <= 10 && width < 64) {
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// widthが64未満はおかしいのでリトライする
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await new Promise(resolve => setTimeout(resolve, 50));
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return getClientWidthWithCache(targetEl, containerEl, count + 1);
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}
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widthCache.set(containerEl, width);
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ro.observe(containerEl);
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return width;
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}
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</script>
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<script lang="ts" setup>
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import { onMounted, onUnmounted, shallowRef } from 'vue';
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import * as misskey from 'misskey-js';
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import PhotoSwipeLightbox from 'photoswipe/lightbox';
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import PhotoSwipe from 'photoswipe';
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import 'photoswipe/style.css';
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import XBanner from '@/components/MkMediaBanner.vue';
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import XImage from '@/components/MkMediaImage.vue';
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import XVideo from '@/components/MkMediaVideo.vue';
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import * as os from '@/os';
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import { FILE_TYPE_BROWSERSAFE } from '@/const';
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import { defaultStore } from '@/store';
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import { getScrollContainer, getBodyScrollHeight } from '@/scripts/scroll';
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const props = defineProps<{
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mediaList: misskey.entities.DriveFile[];
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raw?: boolean;
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}>();
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const root = shallowRef<HTMLDivElement>();
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const container = shallowRef<HTMLElement | null | undefined>(undefined);
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const gallery = shallowRef<HTMLDivElement>();
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const pswpZIndex = os.claimZIndex('middle');
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document.documentElement.style.setProperty('--mk-pswp-root-z-index', pswpZIndex.toString());
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const count = $computed(() => props.mediaList.filter(media => previewable(media)).length);
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let lightbox: PhotoSwipeLightbox | null;
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const popstateHandler = (): void => {
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if (lightbox.pswp && lightbox.pswp.isOpen === true) {
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lightbox.pswp.close();
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}
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};
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/**
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* アスペクト比をmediaListWithOneImageAppearanceに基づいていい感じに調整する
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* aspect-ratioではなくheightを使う
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*/
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async function calcAspectRatio() {
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if (!gallery.value || !root.value) return;
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let img = props.mediaList[0];
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if (props.mediaList.length !== 1 || !(img.properties.width && img.properties.height)) {
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gallery.value.style.aspectRatio = '';
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return;
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}
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if (!container.value) container.value = getScrollContainer(root.value);
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const width = container.value ? await getClientWidthWithCache(root.value, container.value) : root.value.clientWidth;
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const heightMin = (ratio: number) => {
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const imgResizeRatio = width / img.properties.width;
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const imgDrawHeight = img.properties.height * imgResizeRatio;
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const maxHeight = width * ratio;
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const height = Math.min(imgDrawHeight, maxHeight);
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if (_DEV_) console.log('Image height calculated:', { width, properties: img.properties, imgResizeRatio, imgDrawHeight, maxHeight, height });
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return `${height}px`;
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};
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switch (defaultStore.state.mediaListWithOneImageAppearance) {
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case '16_9':
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gallery.value.style.height = heightMin(9 / 16);
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break;
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case '1_1':
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gallery.value.style.height = heightMin(1);
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break;
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case '2_3':
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gallery.value.style.height = heightMin(3 / 2);
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break;
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default: {
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const maxHeight = Math.max(64, (container.value ? container.value.clientHeight : getBodyScrollHeight()) * 0.5 || 360);
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if (width === 0 || !maxHeight) return;
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const imgResizeRatio = width / img.properties.width;
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const imgDrawHeight = img.properties.height * imgResizeRatio;
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gallery.value.style.height = `${Math.max(64, Math.min(imgDrawHeight, maxHeight))}px`;
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gallery.value.style.minHeight = 'initial';
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gallery.value.style.maxHeight = 'initial';
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break;
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}
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}
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gallery.value.style.aspectRatio = 'initial';
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}
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onMounted(() => {
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calcAspectRatio();
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lightbox = new PhotoSwipeLightbox({
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dataSource: props.mediaList
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.filter(media => {
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if (media.type === 'image/svg+xml') return true; // svgのwebpublicはpngなのでtrue
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return media.type.startsWith('image') && FILE_TYPE_BROWSERSAFE.includes(media.type);
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})
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.map(media => {
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const item = {
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src: media.url,
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w: media.properties.width,
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h: media.properties.height,
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alt: media.comment ?? media.name,
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comment: media.comment ?? media.name,
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};
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if (media.properties.orientation != null && media.properties.orientation >= 5) {
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[item.w, item.h] = [item.h, item.w];
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}
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return item;
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}),
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gallery: gallery.value,
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mainClass: 'pswp',
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children: '.image',
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thumbSelector: '.image',
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loop: false,
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padding: window.innerWidth > 500 ? {
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top: 32,
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bottom: 90,
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left: 32,
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right: 32,
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} : {
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top: 0,
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bottom: 78,
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left: 0,
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right: 0,
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},
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imageClickAction: 'close',
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tapAction: 'close',
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bgOpacity: 1,
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showAnimationDuration: 100,
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hideAnimationDuration: 100,
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pswpModule: PhotoSwipe,
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});
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lightbox.on('itemData', (ev) => {
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const { itemData } = ev;
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// element is children
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const { element } = itemData;
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const id = element.dataset.id;
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const file = props.mediaList.find(media => media.id === id);
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if (!file) return;
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itemData.src = file.url;
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itemData.w = Number(file.properties.width);
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itemData.h = Number(file.properties.height);
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if (file.properties.orientation != null && file.properties.orientation >= 5) {
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[itemData.w, itemData.h] = [itemData.h, itemData.w];
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}
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itemData.msrc = file.thumbnailUrl;
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itemData.alt = file.comment ?? file.name;
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itemData.comment = file.comment ?? file.name;
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itemData.thumbCropped = true;
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});
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lightbox.on('uiRegister', () => {
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lightbox.pswp.ui.registerElement({
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name: 'altText',
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className: 'pwsp__alt-text-container',
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appendTo: 'wrapper',
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onInit: (el, pwsp) => {
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let textBox = document.createElement('p');
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textBox.className = 'pwsp__alt-text _acrylic';
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el.appendChild(textBox);
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pwsp.on('change', (a) => {
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textBox.textContent = pwsp.currSlide.data.comment;
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});
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},
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});
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});
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lightbox.init();
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window.addEventListener('popstate', popstateHandler);
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lightbox.on('beforeOpen', () => {
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history.pushState(null, '', '#pswp');
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});
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lightbox.on('close', () => {
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if (window.location.hash === '#pswp') {
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history.back();
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}
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});
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});
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onUnmounted(() => {
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window.removeEventListener('popstate', popstateHandler);
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lightbox?.destroy();
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lightbox = null;
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});
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const previewable = (file: misskey.entities.DriveFile): boolean => {
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if (file.type === 'image/svg+xml') return true; // svgのwebpublic/thumbnailはpngなのでtrue
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// FILE_TYPE_BROWSERSAFEに適合しないものはブラウザで表示するのに不適切
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return (file.type.startsWith('video') || file.type.startsWith('image')) && FILE_TYPE_BROWSERSAFE.includes(file.type);
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};
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</script>
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<style lang="scss" module>
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.container {
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position: relative;
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width: 100%;
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margin-top: 4px;
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}
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.medias {
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display: grid;
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grid-gap: 8px;
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height: 100%;
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width: 100%;
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&.n1 {
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grid-template-rows: 1fr;
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// default but fallback (expand)
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min-height: 64px;
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max-height: clamp(
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64px,
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50cqh,
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min(360px, 50vh)
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);
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&.n116_9 {
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min-height: initial;
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max-height: initial;
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aspect-ratio: 16 / 9; // fallback
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}
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&.n11_1{
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min-height: initial;
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max-height: initial;
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aspect-ratio: 1 / 1; // fallback
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}
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&.n12_3 {
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min-height: initial;
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max-height: initial;
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aspect-ratio: 2 / 3; // fallback
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}
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}
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&.n2 {
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aspect-ratio: 16/9;
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grid-template-columns: 1fr 1fr;
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grid-template-rows: 1fr;
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}
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&.n3 {
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aspect-ratio: 16/9;
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grid-template-columns: 1fr 0.5fr;
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grid-template-rows: 1fr 1fr;
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> .media:nth-child(1) {
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grid-row: 1 / 3;
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}
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> .media:nth-child(3) {
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grid-column: 2 / 3;
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grid-row: 2 / 3;
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}
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}
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&.n4 {
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aspect-ratio: 16/9;
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grid-template-columns: 1fr 1fr;
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grid-template-rows: 1fr 1fr;
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}
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&.nMany {
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grid-template-columns: 1fr 1fr;
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> .media {
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aspect-ratio: 16/9;
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}
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}
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}
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.media {
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overflow: hidden; // clipにするとバグる
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border-radius: 8px;
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}
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:global(.pswp) {
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--pswp-root-z-index: var(--mk-pswp-root-z-index, 2000700) !important;
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--pswp-bg: var(--modalBg) !important;
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}
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</style>
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<style lang="scss">
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.pswp__bg {
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background: var(--modalBg);
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backdrop-filter: var(--modalBgFilter);
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}
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.pwsp__alt-text-container {
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display: flex;
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flex-direction: row;
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align-items: center;
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position: absolute;
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bottom: 20px;
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left: 50%;
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transform: translateX(-50%);
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width: 75%;
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max-width: 800px;
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}
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.pwsp__alt-text {
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color: var(--fg);
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margin: 0 auto;
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text-align: center;
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padding: var(--margin);
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border-radius: var(--radius);
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max-height: 8em;
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overflow-y: auto;
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text-shadow: var(--bg) 0 0 10px, var(--bg) 0 0 3px, var(--bg) 0 0 3px;
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white-space: pre-line;
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}
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</style>
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