Add 2x support for news cover image

app/Models/NewsPost.php

@@ -266,6 +266,21 @@ public function firstImage($absolute = false)
         return $url;
     }
 
+    public function firstImageWith2x(): array
+    {
+        $url = presence($this->firstImage());
+
+        if ($url !== null) {
+            $origUrl = proxy_media_original_url($url);
+            $url2x = proxy_media(retinaify($origUrl));
+        }
+
+        return [
+            '1x' => $url,
+            '2x' => $url2x ?? null,
+        ];
+    }
+
     public function newer()
     {
         return $this->memoize(__FUNCTION__, function () {

app/Transformers/NewsPostTransformer.php

@@ -17,12 +17,15 @@ class NewsPostTransformer extends TransformerAbstract
 
     public function transform(NewsPost $post)
     {
+        $firstImage = $post->firstImageWith2x();
+
         return [
             'id' => $post->id,
 
             'author' => $post->author(),
             'edit_url' => $post->editUrl(),
-            'first_image' => $post->firstImage(),
+            'first_image' => $firstImage['1x'],
+            'first_image@2x' => $firstImage['2x'],
             'published_at' => json_time($post->published_at),
             'updated_at' => json_time($post->updated_at),
             'slug' => $post->slug,

app/helpers.php

@@ -1128,6 +1128,17 @@ function proxy_media($url)
     return $GLOBALS['cfg']['osu']['camo']['prefix']."{$secret}/{$hexUrl}";
 }
 
+function proxy_media_original_url(?string $url): ?string
+{
+    if ($url === null) {
+        return null;
+    }
+
+    return str_starts_with($url, $GLOBALS['cfg']['osu']['camo']['prefix'])
+        ? hex2bin(substr($url, strrpos($url, '/') + 1))
+        : $url;
+}
+
 function lazy_load_image($url, $class = '', $alt = '')
 {
     return "<img class='{$class}' src='{$url}' alt='{$alt}' loading='lazy' />";

resources/css/bem/news-post-preview.less

@@ -18,12 +18,13 @@
   }
 
   &__image {
+    .at2x-simple-var(--bg);
     width: 100%;
     height: 130px;
     background-size: cover;
     background-position: 50%;
     display: block;
-    background-color: @osu-colour-b6;
+    background-color: hsl(var(--hsl-b6));
     .@{top}--collapsed & {
       display: none;
     }

resources/css/bem/page-nav-fancy.less

@@ -4,7 +4,7 @@
 .page-nav-fancy {
   @_top: page-nav-fancy;
 
-  .at2x-simple("~@images/headers/news-show-default.jpg");
+  .at2x-fallback(--bg, "~@images/headers/news-show-default.jpg");
   .link-plain();
   .link-white();
   background-position: center;

resources/js/interfaces/news-post-json.ts

@@ -6,15 +6,26 @@ interface Navigation {
   older?: NewsPostJson;
 }
 
-export default interface NewsPostJson {
+interface HasFirstImage {
+  first_image: string;
+  'first_image@2x': string;
+}
+
+interface HasNoFirstImage {
+  first_image: null;
+  'first_image@2x': null;
+}
+
+type NewsPostJson = {
   author: string;
   content?: string;
   edit_url: string;
-  first_image?: string;
   id: number;
   navigation?: Navigation;
   preview?: string;
   published_at: string;
   slug: string;
   title: string;
-}
+} & (HasFirstImage | HasNoFirstImage);
+
+export default NewsPostJson;

resources/js/news-index/post-item.tsx

@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <[email protected]>. Licensed under the GNU Affero General Public License v3.0.
 // See the LICENCE file in the repository root for full licence text.
 
+import Img2x from 'components/img2x';
 import StringWithComponent from 'components/string-with-component';
 import PostJson from 'interfaces/news-post-json';
 import { route } from 'laroute';
@@ -13,7 +14,7 @@ export default function PostItem({ modifiers, post }: { modifiers?: string[]; po
   let cover;
 
   if (post.first_image != null) {
-    cover = <img className='news-card__cover' src={post.first_image} />;
+    cover = <Img2x className='news-card__cover' src={post.first_image} src2x={post['first_image@2x']} />;
   }
 
   let preview = post.preview;
@@ -40,8 +41,8 @@ export default function PostItem({ modifiers, post }: { modifiers?: string[]; po
       <div className='news-card__main'>
         <div className='news-card__row news-card__row--title'>{post.title}</div>
         <div
-          dangerouslySetInnerHTML={{ __html: preview }}
           className='news-card__row news-card__row--preview'
+          dangerouslySetInnerHTML={{ __html: preview }}
         />
         <div className='news-card__row news-card__row--author'>
           <StringWithComponent

resources/js/news-show/main.tsx

@@ -11,7 +11,7 @@ import { route } from 'laroute';
 import PostItem from 'news-index/post-item';
 import NewsSidebar from 'news-sidebar/main';
 import * as React from 'react';
-import { classWithModifiers, urlPresence } from 'utils/css';
+import { classWithModifiers, Modifiers, urlPresence } from 'utils/css';
 import { trans } from 'utils/lang';
 
 interface Props {
@@ -20,7 +20,7 @@ interface Props {
   sidebarMeta: NewsSidebarMetaJson;
 }
 
-function NavPost({ post, subtitle, modifiers }: { modifiers: string[]; post?: NewsPostJson; subtitle: string }) {
+function NavPost({ post, subtitle, modifiers }: { modifiers: Modifiers; post?: NewsPostJson; subtitle: string }) {
   if (post == null) {
     return null;
   }
@@ -29,7 +29,10 @@ function NavPost({ post, subtitle, modifiers }: { modifiers: string[]; post?: Ne
     <a
       className={classWithModifiers('page-nav-fancy', modifiers)}
       href={route('news.show', { news: post.slug })}
-      style={{ backgroundImage: urlPresence(post.first_image) }}
+      style={{
+        '--bg': urlPresence(post.first_image),
+        '--bg-2x': urlPresence(post['first_image@2x']),
+      } as React.CSSProperties}
     >
       <div className='page-nav-fancy__label'>
         <div className='page-nav-fancy__subtitle'>
@@ -166,8 +169,8 @@ export default class Main extends React.Component<Props> {
 
     return (
       <>
-        <NavPost modifiers={['next']} post={newerPost} subtitle={trans('news.show.nav.newer')} />
-        <NavPost modifiers={['prev']} post={olderPost} subtitle={trans('news.show.nav.older')} />
+        <NavPost modifiers='next' post={newerPost} subtitle={trans('news.show.nav.newer')} />
+        <NavPost modifiers='prev' post={olderPost} subtitle={trans('news.show.nav.older')} />
       </>
     );
   };

resources/views/docs/_structures/news_post.md

@@ -1,15 +1,16 @@
 ## NewsPost
 
-Field        | Type                    | Description
--------------|-------------------------|------------
-author       | string                  | |
-edit_url     | string                  | Link to the file view on GitHub.
-first_image  | string?                 | Link to the first image in the document.
-id           | integer                 | |
-published_at | [Timestamp](#timestamp) | |
-slug         | string                  | Filename without the extension, used in URLs.
-title        | string                  | |
-updated_at   | [Timestamp](#timestamp) | |
+Field          | Type                    | Description
+-------------- | ----------------------- | -----------
+author         | string                  | |
+edit_url       | string                  | Link to the file view on GitHub.
+first_image    | string?                 | Link to the first image in the document.
+first_image@2x | string?                 | Larger size version of `first_image`.
+id             | integer                 | |
+published_at   | [Timestamp](#timestamp) | |
+slug           | string                  | Filename without the extension, used in URLs.
+title          | string                  | |
+updated_at     | [Timestamp](#timestamp) | |
 
 ### Optional Attributes
 

resources/views/home/_user_news_post_preview.blade.php

@@ -4,12 +4,16 @@
 --}}
 @php
     $publishedAt = $post->published_at;
+    $firstImage = $post->firstImageWith2x();
 @endphp
 <div class="news-post-preview{{$collapsed ? ' news-post-preview--collapsed' : ''}}">
     <a
         class="news-post-preview__image"
-        href='{{ route('news.show', $post->slug) }}'
-        {!! background_image($post->firstImage()) !!}
+        href="{{ route('news.show', $post->slug) }}"
+        style="
+            --bg: url('{{ $firstImage['1x'] }}');
+            --bg-2x: url('{{ $firstImage['2x'] }}');
+        "
     ></a>
     <div class="news-post-preview__body">
         <div class="news-post-preview__post-date js-tooltip-time" title="{{ json_time($publishedAt) }}">