Gets the cells' height and width in pixels for the selected range in Google Spreadsheet in form of a 2-d JavaScript array; the array values are ordered in the same way as executing Range.getValues()

cellPixSizes.js

/**
 * Gets the cells' height and width in pixels for the selected range in Google Spreadsheet in form of a 2-d JavaScript array;
 * the array values are ordered in the same way as executing Range.getValues()
 * @param {Object} activeSheet The active Sheet class object in Google Spreadsheet, e.g., SpreadsheetApp.getActiveSheet()
 * @param {Object} activeRange The selected Range class object in Google Spreadsheet, e.g., SpreadsheetApp.getActiveRange()
 */
function cellPixSizes(activeSheet, activeRange) {
  var rangeStartCell = { 'row': activeRange.getRow(), 'column': activeRange.getColumn() };
  var cellValues = activeRange.getValues();
  var cellPixSizes = cellValues.map(function(row, rowIndex) {
    let rowPix = activeSheet.getRowHeight(rangeStartCell.row + rowIndex);
    let rowPixSizes = row.map(function(column, colIndex) {
      let cellSize = {'height': rowPix, 'width': activeSheet.getColumnWidth(rangeStartCell.column + colIndex)};
      return cellSize;
    });
    return rowPixSizes;
  });
  return cellPixSizes;
}