cellBuilder property
CellItemBuilder?
cellBuilder
final
Custom heatmap cell builder e.g. (add tootips):
cellBuilder: (context, childBuilder, columnIndex, rowIndex, date) {
return Tooltip(
message: "${DateFormat('yyyy-MM-dd').format(date)} value: $value",
waitDuration: const Duration(seconds: 1),
child: childBuilder(
context,
valueBuilder: (context, dateDay) {
if (dateDay == null) return null;
var n = vm.data[date];
return Text((n ?? 0).toString());
},
),
);
},
Implementation
final CellItemBuilder? cellBuilder;