@1771technologies/lytenyte-pro/dist/cell-selection/adjust-rect-for-row-and-cell-span.js

Blazingly fast headless React data grid with 100s of features.

import { getRootCell } from "./get-root-cell.js";
export function adjustRectForRowAndCellSpan(cellRoot, rect) {
    let { rowStart, rowEnd, columnStart, columnEnd } = rect;
    // Check the top row of the rect.
    for (let i = columnStart; i < columnEnd; i++) {
        let cell = getRootCell(cellRoot, rowStart, i);
        if (cell) {
            columnStart = Math.min(columnStart, cell.colIndex);
            columnEnd = Math.max(columnEnd, cell.colIndex + cell.colSpan);
            rowStart = Math.min(rowStart, cell.rowIndex);
            rowEnd = Math.max(rowEnd, cell.rowIndex + cell.rowSpan);
        }
        cell = getRootCell(cellRoot, rowEnd - 1, i);
        if (cell) {
            columnStart = Math.min(columnStart, cell.colIndex);
            columnEnd = Math.max(columnEnd, cell.colIndex + cell.colSpan);
            rowStart = Math.min(rowStart, cell.rowIndex);
            rowEnd = Math.max(rowEnd, cell.rowIndex + cell.rowSpan);
        }
    }
    for (let i = rowStart; i < rowEnd; i++) {
        let cell = getRootCell(cellRoot, i, columnStart);
        if (cell) {
            columnStart = Math.min(columnStart, cell.colIndex);
            columnEnd = Math.max(columnEnd, cell.colIndex + cell.colSpan);
            rowStart = Math.min(rowStart, cell.rowIndex);
            rowEnd = Math.max(rowEnd, cell.rowIndex + cell.rowSpan);
        }
        cell = getRootCell(cellRoot, i, columnEnd - 1);
        if (cell) {
            columnStart = Math.min(columnStart, cell.colIndex);
            columnEnd = Math.max(columnEnd, cell.colIndex + cell.colSpan);
            rowStart = Math.min(rowStart, cell.rowIndex);
            rowEnd = Math.max(rowEnd, cell.rowIndex + cell.rowSpan);
        }
    }
    return {
        rowStart,
        rowEnd,
        columnStart,
        columnEnd,
    };
}