dayShape property
final
Overrides the default shape used to paint the shape decoration of the day labels in the grid of the date picker.
If the selected day is the current day, the provided shape with the value of todayBackgroundColor is used to paint the shape decoration of the day label and the value of todayBorder and todayForegroundColor is used to paint the border.
If the selected day is not the current day, the provided shape with the value of dayBackgroundColor is used to paint the shape decoration of the day label.
This sample demonstrates how to customize the day selector shape decoration
using the dayShape, todayForegroundColor, todayBackgroundColor, and
todayBorder properties.
link
To create a local project with this code sample, run:
flutter create --sample=material.DatePickerThemeData.dayShape.1 mysample
Implementation
final MaterialStateProperty<OutlinedBorder?>? dayShape;