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Smooth calendar resize during panel transitions

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Replace single delayed updateSize() with requestAnimationFrame loop
that continuously resizes FullCalendar throughout the 300ms CSS
transition, eliminating the visual desync between panel and calendar.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Kyle 2026-02-25 23:13:40 +08:00
parent 8945295e2a
commit 057b43627b
1 changed files with 11 additions and 4 deletions
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15
frontend/src/components/calendar/CalendarPage.tsx
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@ -90,12 +90,19 @@ export default function CalendarPage() {
const panelOpen = panelMode !== 'closed';
// Resize calendar when panel opens/closes (CSS transition won't trigger ResizeObserver on inner div)
// Continuously resize calendar during panel open/close CSS transition
useEffect(() => {
const timeout = setTimeout(() => {
let rafId: number;
const start = performance.now();
const duration = 350; // slightly longer than the 300ms CSS transition
const tick = () => {
calendarRef.current?.getApi().updateSize();
}, 320);
return () => clearTimeout(timeout);
if (performance.now() - start < duration) {
rafId = requestAnimationFrame(tick);
}
};
rafId = requestAnimationFrame(tick);
return () => cancelAnimationFrame(rafId);
}, [panelOpen]);
// Scroll wheel navigation in month view