FdcGridRangeSelectionRowTopResolver typedef

FdcGridRangeSelectionRowTopResolver = double Function(int rowIndex)

Resolves the top edge of a data row in vertical grid content coordinates.

The grid host provides this resolver and overlay builders call it for zero-based data-row indexes. The returned value is measured before applying the viewport's vertical scroll offset. This contract allows hosts with non-uniform row geometry to project range overlays correctly. Invalid row indexes are outside the contract.

This typedef is part of the stable fdc_ext.dart extension seam.

Implementation

typedef FdcGridRangeSelectionRowTopResolver = double Function(int rowIndex);