authorgravatar for me@t3.ggTheo Browne <me@t3.gg> 2026-09-06 19:04:46-07:00
committergravatar for noreply@github.comGitHub <noreply@github.com> 2026-09-06 19:04:46-07:00
logda976cf2932f0f632c6e42f0adb604a7f058ac1c
tree24ae777bcf746d16cdcf1b0b5e0a9e7c8fb904e2
parent52b2bf77a941740b4d979f3f4cae1c2851c14a69
signature Signed by PGP key B5690EEEBB952194

fix(marketing): restore continuous endorsement scrolling (#10450)

4 files changed, 179 insertions(+), 217 deletions(-)

apps/marketing/astro.config.mjs+1
......@@ -4,5 +4,6 @@ export default defineConfig({
44 site: "https://t3.codes",
55 server: {
66 port: Number(process.env.PORT ?? 4173),
7 allowedHosts: true,
78 },
89});
apps/marketing/src/lib/homeMotion.test.ts+3-90
......@@ -6,17 +6,8 @@ class ElementStub extends EventTarget {
66 properties = new Map<string, string>();
77 style = { setProperty: (name: string, value: string) => this.properties.set(name, value) };
88 children: ElementStub[] = [];
9 scrollLeft = 0;
10 scrollWidth = 1_200;
11 clientWidth = 400;
12 matches = () => false;
13 contains = (target: EventTarget | null) =>
14 target === this || (target instanceof ElementStub && this.children.includes(target));
159 querySelectorAll = () => this.children;
1610 getBoundingClientRect = vi.fn(() => ({ left: 0, top: 0, width: 400, height: 600 }));
17 scrollTo = vi.fn((options: ScrollToOptions) => {
18 this.scrollLeft = options.left ?? this.scrollLeft;
19 });
2011}
2112
2213let observers: ObserverStub[] = [];
......@@ -79,12 +70,11 @@ function fixture() {
7970 const mark = new ElementStub();
8071 const otherMark = new ElementStub();
8172 field.children = [mark, otherMark];
82 const endorsements = new ElementStub();
8373 const caret = new ElementStub();
84 dispose = startHomeMotion({ hero, field, endorsements, caret } as unknown as Parameters<
74 dispose = startHomeMotion({ hero, field, caret } as unknown as Parameters<
8575 typeof startHomeMotion
8676 >[0]);
87 return { hero, field, mark, otherMark, endorsements, caret, observer: observers[0]! };
77 return { hero, field, mark, otherMark, caret, observer: observers[0]! };
8878}
8979
9080function movePointer(hero: ElementStub, x = 400, y = 600) {
......@@ -133,86 +123,9 @@ describe("homepage motion", () => {
133123 expect(mark.properties.get("--home-motion-state")).toBe("running");
134124 });
135125
136 it("pages every eight seconds, reverses at the end, and has no timer without overflow", () => {
137 const { endorsements, observer } = fixture();
138 expect(vi.getTimerCount()).toBe(0);
139 observer.report(endorsements, true);
140 vi.advanceTimersByTime(7_999);
141 expect(endorsements.scrollTo).not.toHaveBeenCalled();
142 vi.advanceTimersByTime(16_001);
143 expect(endorsements.scrollTo.mock.calls.map(([options]) => options.left)).toEqual([
144 400, 800, 400,
145 ]);
146 expect(
147 endorsements.scrollTo.mock.calls.every(([options]) => options.behavior === "smooth"),
148 ).toBe(true);
149
150 endorsements.clientWidth = endorsements.scrollWidth;
151 viewport.dispatchEvent(new Event("resize"));
152 expect(vi.getTimerCount()).toBe(0);
153 expect(endorsements.scrollTo).toHaveBeenLastCalledWith({ left: 400, behavior: "instant" });
154 endorsements.clientWidth = 400;
155 viewport.dispatchEvent(new Event("resize"));
156 expect(vi.getTimerCount()).toBe(1);
157 });
158
159 it("pauses paging for hover, focus, hidden content, and reduced motion", () => {
160 const { endorsements, observer } = fixture();
161 observer.report(endorsements, true);
162 const changeVisibility = (visible: boolean) => {
163 page.visibilityState = visible ? "visible" : "hidden";
164 page.dispatchEvent(new Event("visibilitychange"));
165 };
166 const changeMotion = (matches: boolean) => {
167 reduced.matches = matches;
168 reduced.dispatchEvent(new Event("change"));
169 };
170 const pauses = [
171 [
172 () => endorsements.dispatchEvent(new Event("pointerenter")),
173 () => endorsements.dispatchEvent(new Event("pointerleave")),
174 ],
175 [
176 () => endorsements.dispatchEvent(new Event("focusin")),
177 () =>
178 endorsements.dispatchEvent(Object.assign(new Event("focusout"), { relatedTarget: null })),
179 ],
180 [() => changeVisibility(false), () => changeVisibility(true)],
181 [() => observer.report(endorsements, false), () => observer.report(endorsements, true)],
182 [() => changeMotion(true), () => changeMotion(false)],
183 ] as const;
184 for (const [pause, resume] of pauses) {
185 pause();
186 expect(vi.getTimerCount()).toBe(0);
187 vi.advanceTimersByTime(16_000);
188 resume();
189 expect(vi.getTimerCount()).toBe(1);
190 }
191 expect(endorsements.scrollTo).not.toHaveBeenCalled();
192 vi.advanceTimersByTime(8_000);
193 expect(endorsements.scrollTo).toHaveBeenCalledWith({ left: 400, behavior: "smooth" });
194 endorsements.dispatchEvent(new Event("pointerenter"));
195 expect(endorsements.scrollTo).toHaveBeenLastCalledWith({ left: 400, behavior: "instant" });
196 expect(vi.getTimerCount()).toBe(0);
197 });
198
199 it.each(["wheel", "pointerdown", "keydown"])("hands control to the user after %s", (event) => {
200 const { endorsements, observer } = fixture();
201 observer.report(endorsements, true);
202 endorsements.dispatchEvent(new Event(event));
203 observer.report(endorsements, false);
204 observer.report(endorsements, true);
205 endorsements.dispatchEvent(new Event("pointerleave"));
206 viewport.dispatchEvent(new Event("resize"));
207 vi.advanceTimersByTime(60_000);
208 expect(vi.getTimerCount()).toBe(0);
209 expect(endorsements.scrollTo).not.toHaveBeenCalled();
210 });
211
212126 it("cancels pending work and ignores events after cleanup", () => {
213 const { hero, mark, endorsements, observer } = fixture();
127 const { hero, mark, observer } = fixture();
214128 observer.report(mark, true);
215 observer.report(endorsements, true);
216129 movePointer(hero);
217130 dispose?.();
218131 observer.report(mark, true);
apps/marketing/src/lib/homeMotion.ts+2-85
......@@ -1,13 +1,11 @@
1/** Runs homepage motion only while its content is visible. Manual scrolling stops paging. */
1/** Runs homepage motion only while its content is visible. */
22export function startHomeMotion({
33 hero,
44 field,
5 endorsements,
65 caret,
76}: {
87 hero: HTMLElement;
98 field: HTMLElement;
10 endorsements: HTMLElement;
119 caret: HTMLElement;
1210}) {
1311 if (typeof IntersectionObserver === "undefined") return () => {};
......@@ -19,12 +17,6 @@ export function startHomeMotion({
1917 const events = new AbortController();
2018 const eventOptions = { signal: events.signal };
2119 let disposed = false;
22 let hovered = endorsements.matches(":hover");
23 let focused = endorsements.contains(document.activeElement);
24 let userControlled = false;
25 let direction = 1;
26 let automaticScroll = false;
27 let pageTimer: ReturnType<typeof setTimeout> | undefined;
2820 let pointerFrame: number | undefined;
2921 let pointer: { x: number; y: number } | null = null;
3022
......@@ -34,13 +26,6 @@ export function startHomeMotion({
3426 document.visibilityState === "visible" &&
3527 !reducedMotion.matches;
3628 const canParallax = () => finePointer.matches && marks.some(canMove);
37 const canPage = () =>
38 canMove(endorsements) &&
39 !hovered &&
40 !focused &&
41 !userControlled &&
42 endorsements.scrollWidth > endorsements.clientWidth;
43
4429 function resetPointer() {
4530 if (pointerFrame !== undefined) cancelAnimationFrame(pointerFrame);
4631 pointerFrame = undefined;
......@@ -49,34 +34,6 @@ export function startHomeMotion({
4934 field.style.setProperty("--py", "0px");
5035 }
5136
52 function updatePaging() {
53 if (canPage()) {
54 pageTimer ??= setTimeout(advancePage, 8_000);
55 return;
56 }
57 if (pageTimer !== undefined) clearTimeout(pageTimer);
58 pageTimer = undefined;
59 if (automaticScroll) {
60 automaticScroll = false;
61 endorsements.scrollTo({ left: endorsements.scrollLeft, behavior: "instant" });
62 }
63 }
64
65 function advancePage() {
66 pageTimer = undefined;
67 if (!canPage()) return;
68 const end = endorsements.scrollWidth - endorsements.clientWidth;
69 const current = endorsements.scrollLeft;
70 if (current >= end - 1) direction = -1;
71 else if (current <= 1) direction = 1;
72 automaticScroll = true;
73 endorsements.scrollTo({
74 left: Math.max(0, Math.min(end, current + direction * endorsements.clientWidth)),
75 behavior: "smooth",
76 });
77 updatePaging();
78 }
79
8037 function update() {
8138 for (const mark of marks) {
8239 mark.style.setProperty("--home-motion-state", canMove(mark) ? "running" : "paused");
......@@ -85,7 +42,6 @@ export function startHomeMotion({
8542 const parallax = canParallax();
8643 field.style.setProperty("--parallax-duration", parallax ? "0.7s" : "0s");
8744 if (!parallax) resetPointer();
88 updatePaging();
8945 }
9046
9147 const observer = new IntersectionObserver((entries) => {
......@@ -96,7 +52,7 @@ export function startHomeMotion({
9652 }
9753 update();
9854 });
99 for (const element of [...marks, endorsements, caret]) observer.observe(element);
55 for (const element of [...marks, caret]) observer.observe(element);
10056
10157 hero.addEventListener(
10258 "pointermove",
......@@ -121,45 +77,6 @@ export function startHomeMotion({
12177 eventOptions,
12278 );
12379 hero.addEventListener("pointerleave", resetPointer, eventOptions);
124 endorsements.addEventListener(
125 "pointerenter",
126 () => {
127 hovered = true;
128 updatePaging();
129 },
130 eventOptions,
131 );
132 endorsements.addEventListener(
133 "pointerleave",
134 () => {
135 hovered = false;
136 updatePaging();
137 },
138 eventOptions,
139 );
140 endorsements.addEventListener(
141 "focusin",
142 () => {
143 focused = true;
144 updatePaging();
145 },
146 eventOptions,
147 );
148 endorsements.addEventListener(
149 "focusout",
150 (event) => {
151 focused = event.relatedTarget instanceof Node && endorsements.contains(event.relatedTarget);
152 updatePaging();
153 },
154 eventOptions,
155 );
156 const takeControl = () => {
157 userControlled = true;
158 updatePaging();
159 };
160 endorsements.addEventListener("wheel", takeControl, { ...eventOptions, passive: true });
161 endorsements.addEventListener("pointerdown", takeControl, eventOptions);
162 endorsements.addEventListener("keydown", takeControl, eventOptions);
16380 document.addEventListener("visibilitychange", update, eventOptions);
16481 window.addEventListener("resize", update, eventOptions);
16582 reducedMotion.addEventListener("change", update, eventOptions);
apps/marketing/src/pages/index.astro+173-42
......@@ -17,6 +17,16 @@ const screenshot = await getImage({
1717 quality: 90,
1818});
1919
20const desktopEndorsementRows = [
21 tweets.filter((_, index) => index % 2 === 0),
22 tweets.filter((_, index) => index % 2 === 1),
23];
24
25const mobileEndorsementRows = [
26 tweets.filter((_, index) => index % 3 === 0),
27 tweets.filter((_, index) => index % 3 === 1),
28 tweets.filter((_, index) => index % 3 === 2),
29];
2030---
2131
2232<Layout>
......@@ -111,29 +121,80 @@ const screenshot = await getImage({
111121 </div>
112122 </div>
113123
114 <div class="endorsement-carousel" role="region" aria-label="Developer endorsements" tabindex="0">
115 {tweets.map((tweet) => (
116 <a
117 class="endorsement-card"
118 href={tweet.link}
119 target="_blank"
120 rel="noopener noreferrer"
121 aria-label={`Read ${tweet.handle}'s post on X`}
122 >
123 <div class="endorsement-author">
124 <img
125 src={`/pfps/${tweet.handle}.webp`}
126 alt=""
127 width="28"
128 height="28"
129 loading="lazy"
130 decoding="async"
131 />
132 <div class="endorsement-handle">@{tweet.handle}</div>
133 </div>
134 <p>{tweet.excerpt ?? tweet.content}</p>
135 </a>
136 ))}
124 <div class="endorsement-carousel endorsement-carousel--desktop" aria-label="Developer endorsements">
125 {
126 desktopEndorsementRows.map((row, rowIndex) => (
127 <div class:list={["endorsement-row", rowIndex === 1 && "is-reverse"]}>
128 <div class="endorsement-track">
129 {[0, 1].map((groupIndex) => (
130 <div class="endorsement-track-group" aria-hidden={groupIndex === 1 ? "true" : undefined}>
131 {row.map((tweet) => (
132 <a
133 class="endorsement-card"
134 href={tweet.link}
135 target="_blank"
136 rel="noopener noreferrer"
137 aria-label={`Read ${tweet.handle}'s post on X`}
138 tabindex={groupIndex === 1 ? "-1" : undefined}
139 >
140 <div class="endorsement-author">
141 <img
142 src={`/pfps/${tweet.handle}.webp`}
143 alt=""
144 width="28"
145 height="28"
146 loading="lazy"
147 decoding="async"
148 />
149 <div class="endorsement-handle">@{tweet.handle}</div>
150 </div>
151 <p>{tweet.excerpt ?? tweet.content}</p>
152 </a>
153 ))}
154 </div>
155 ))}
156 </div>
157 </div>
158 ))
159 }
160 </div>
161
162 <div class="endorsement-carousel endorsement-carousel--mobile" aria-label="Developer endorsements">
163 {
164 mobileEndorsementRows.map((row, rowIndex) => (
165 <div class:list={["endorsement-row", rowIndex === 1 && "is-reverse"]}>
166 <div class="endorsement-track">
167 {[0, 1].map((groupIndex) => (
168 <div class="endorsement-track-group" aria-hidden={groupIndex === 1 ? "true" : undefined}>
169 {row.map((tweet) => (
170 <a
171 class="endorsement-card"
172 href={tweet.link}
173 target="_blank"
174 rel="noopener noreferrer"
175 aria-label={`Read ${tweet.handle}'s post on X`}
176 tabindex={groupIndex === 1 ? "-1" : undefined}
177 >
178 <div class="endorsement-author">
179 <img
180 src={`/pfps/${tweet.handle}.webp`}
181 alt=""
182 width="28"
183 height="28"
184 loading="lazy"
185 decoding="async"
186 />
187 <div class="endorsement-handle">@{tweet.handle}</div>
188 </div>
189 <p>{tweet.excerpt ?? tweet.content}</p>
190 </a>
191 ))}
192 </div>
193 ))}
194 </div>
195 </div>
196 ))
197 }
137198 </div>
138199 </section>
139200
......@@ -427,10 +488,9 @@ const screenshot = await getImage({
427488
428489 const hero = document.querySelector<HTMLElement>(".hero");
429490 const field = document.querySelector<HTMLElement>(".hero-float");
430 const endorsements = document.querySelector<HTMLElement>(".endorsement-carousel");
431491 const caret = document.querySelector<HTMLElement>(".caret");
432 if (hero && field && endorsements && caret) {
433 startHomeMotion({ hero, field, endorsements, caret });
492 if (hero && field && caret) {
493 startHomeMotion({ hero, field, caret });
434494 }
435495</script>
436496
......@@ -823,22 +883,67 @@ const screenshot = await getImage({
823883 }
824884
825885 .endorsement-carousel {
826 display: grid;
827 grid-auto-flow: column;
828 grid-template-rows: repeat(2, 132px);
829 grid-auto-columns: clamp(264px, 22vw, 308px);
886 position: relative;
887 display: flex;
888 flex-direction: column;
889 gap: 12px;
890 }
891
892 .endorsement-carousel--mobile {
893 display: none;
894 }
895
896 .endorsement-carousel::before,
897 .endorsement-carousel::after {
898 content: "";
899 position: absolute;
900 top: 0;
901 bottom: 0;
902 z-index: 2;
903 width: max(48px, calc((100vw - 1240px) / 2 + 56px));
904 pointer-events: none;
905 }
906
907 .endorsement-carousel::before {
908 left: 0;
909 background: linear-gradient(90deg, var(--bg), transparent);
910 }
911
912 .endorsement-carousel::after {
913 right: 0;
914 background: linear-gradient(270deg, var(--bg), transparent);
915 }
916
917 .endorsement-row {
918 overflow: hidden;
919 }
920
921 .endorsement-track {
922 width: max-content;
923 display: flex;
924 animation: endorsementMarquee 76s linear infinite;
925 will-change: transform;
926 }
927
928 .endorsement-track-group {
929 display: flex;
830930 gap: 12px;
831 overflow-x: auto;
832 overscroll-behavior-x: contain;
833 /* Percentages resolve against this element's own box rather than the
834 viewport, so the first card lines up with the heading's .container edge
835 even when a classic scrollbar makes 100vw wider than the layout. */
836 padding: 4px max(32px, calc((100% - 1240px) / 2 + 32px));
837 scroll-padding-inline: max(32px, calc((100% - 1240px) / 2 + 32px));
931 padding-right: 12px;
932 }
933
934 .endorsement-row.is-reverse .endorsement-track {
935 animation-direction: reverse;
936 animation-duration: 84s;
937 }
938
939 .endorsement-carousel:hover .endorsement-track,
940 .endorsement-carousel:focus-within .endorsement-track {
941 animation-play-state: paused;
838942 }
839943
840944 .endorsement-card {
841945 position: relative;
946 width: clamp(264px, 22vw, 308px);
842947 height: 132px;
843948 padding: 14px 16px;
844949 display: flex;
......@@ -1149,6 +1254,20 @@ const screenshot = await getImage({
11491254 margin-bottom: 24px;
11501255 }
11511256
1257 @keyframes endorsementMarquee {
1258 from {
1259 transform: translateX(0);
1260 }
1261 to {
1262 transform: translateX(-50%);
1263 }
1264 }
1265
1266 @media (prefers-reduced-motion: reduce) {
1267 .endorsement-track { animation: none; }
1268 .endorsement-row { overflow-x: auto; }
1269 }
1270
11521271 /* ── Responsive ────────────────────────────────────────── */
11531272 @media (max-width: 960px) {
11541273 .hero-preview {
......@@ -1175,13 +1294,25 @@ const screenshot = await getImage({
11751294 .endorsements-head {
11761295 margin-bottom: 40px;
11771296 }
1178 .endorsement-carousel {
1179 grid-template-rows: repeat(3, 132px);
1180 grid-auto-columns: 268px;
1181 padding-inline: 20px;
1182 scroll-padding-inline: 20px;
1297 .endorsement-carousel--desktop {
1298 display: none;
1299 }
1300 .endorsement-carousel--mobile {
1301 display: flex;
1302 }
1303 .endorsement-carousel::before,
1304 .endorsement-carousel::after {
1305 width: 28px;
1306 }
1307 .endorsement-track {
1308 animation-duration: 68s;
1309 }
1310 .endorsement-row.is-reverse .endorsement-track {
1311 animation-duration: 76s;
11831312 }
11841313 .endorsement-card {
1314 width: 268px;
1315 height: 132px;
11851316 padding: 14px;
11861317 }
11871318 .endorsement-card p {