From 5e56338bb3e9bb1bcf1ef1c1fe6afb9c7391d976 Mon Sep 17 00:00:00 2001
From: Josh Kingsley <josh@joshkingsley.me>
Date: Sun, 26 Oct 2025 21:22:05 +0200
Subject: fix(web): fix rendering selection

---
 web/src/components/grid/renderGrid.ts | 4 ++--
 web/src/index.ts                      | 5 +----
 2 files changed, 3 insertions(+), 6 deletions(-)

(limited to 'web/src')

diff --git a/web/src/components/grid/renderGrid.ts b/web/src/components/grid/renderGrid.ts
index e6a2c54..89938ec 100644
--- a/web/src/components/grid/renderGrid.ts
+++ b/web/src/components/grid/renderGrid.ts
@@ -138,7 +138,7 @@ export function getRenderedCell(
   grid: RenderedGrid,
   cellRef: CellRef,
 ): RenderedCell | undefined {
-  const rowsPerPart = grid.renderedRows.length / grid.parts.length;
-  const renderedRowIndex = cellRef.partIndex * rowsPerPart + cellRef.rowIndex;
+  const renderedRowIndex =
+    cellRef.rowIndex * grid.parts.length + cellRef.partIndex;
   return grid.renderedRows[renderedRowIndex]?.renderedCells[cellRef.cellIndex];
 }
diff --git a/web/src/index.ts b/web/src/index.ts
index a6f0ac7..f923c56 100644
--- a/web/src/index.ts
+++ b/web/src/index.ts
@@ -1,10 +1,7 @@
 import Ratio from "./math/Ratio";
 import { Cell, CellRef, Doc, Grid, mapRowsInRange } from "./types";
 import { ActiveCellSelection, Selection } from "./selection";
-import renderGrid, {
-  getRenderedCell,
-  RenderedGrid,
-} from "./components/grid/renderGrid";
+import renderGrid, { RenderedGrid } from "./components/grid/renderGrid";
 
 function defaultDoc(): Doc {
   const defaultCells: Cell[] = Array.from({ length: 16 }, () => ({
-- 
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