computeWidthCase method
Implementation
double computeWidthCase() {
// Account for padding: each cell has 8px padding on all sides (16px horizontal)
// Total horizontal padding for 7 cells = 7 * 16 = 112px
// Available width = screen width - 16 (margins) - 112 (padding) = screen width - 128
return (MediaQuery.of(context).size.width - 128.0) / 7;
}