public override Widget build(BuildContext context)
{
MaterialLocalizations localizations = MaterialLocalizations.of(context);
ThemeData themeData = Theme.of(context);
TextTheme headerTextTheme = themeData.primaryTextTheme;
Color dayColor = null;
Color yearColor = null;
switch (themeData.primaryColorBrightness)
{
case Brightness.light:
dayColor = this.mode == DatePickerMode.day ? Colors.black87 : Colors.black54;
yearColor = this.mode == DatePickerMode.year ? Colors.black87 : Colors.black54;
break;
case Brightness.dark:
dayColor = this.mode == DatePickerMode.day ? Colors.white : Colors.white70;
yearColor = this.mode == DatePickerMode.year ? Colors.white : Colors.white70;
break;
}
TextStyle dayStyle = headerTextTheme.display1.copyWith(color: dayColor, height: 1.4f);
TextStyle yearStyle = headerTextTheme.subhead.copyWith(color: yearColor, height: 1.4f);
Color backgroundColor = null;
switch (themeData.brightness)
{
case Brightness.light:
backgroundColor = themeData.primaryColor;
break;
case Brightness.dark:
backgroundColor = themeData.backgroundColor;
break;
}
float width = 0f;
float height = 0f;
EdgeInsets padding = null;
MainAxisAlignment mainAxisAlignment = MainAxisAlignment.center;
switch (this.orientation)
{
case Orientation.portrait:
height = DatePickerUtils._kDatePickerHeaderPortraitHeight;
padding = EdgeInsets.symmetric(horizontal: 16.0f);
mainAxisAlignment = MainAxisAlignment.center;
break;
case Orientation.landscape:
width = DatePickerUtils._kDatePickerHeaderLandscapeWidth;
padding = EdgeInsets.all(8.0f);
mainAxisAlignment = MainAxisAlignment.start;
break;
}
Widget yearButton = new IgnorePointer(
ignoring: this.mode != DatePickerMode.day,
child: new _DateHeaderButton(
color: backgroundColor,
onTap: Feedback.wrapForTap(() => this._handleChangeMode(DatePickerMode.year), context),
child: new Text(localizations.formatYear(this.selectedDate), style: yearStyle)
)
);
Widget dayButton = new IgnorePointer(
ignoring: this.mode == DatePickerMode.day,
child: new _DateHeaderButton(
color: backgroundColor,
onTap: Feedback.wrapForTap(() => this._handleChangeMode(DatePickerMode.day), context),
child: new Text(localizations.formatMediumDate(this.selectedDate), style: dayStyle)
)
);
return(new Container(
width: width,
height: height,
padding: padding,
color: backgroundColor,
child: new Column(
mainAxisAlignment: mainAxisAlignment,
crossAxisAlignment: CrossAxisAlignment.start,
children: new List <Widget> {
yearButton, dayButton
}
)
));
}