fixed theme issues

example/lib/main.dart

@@ -31,7 +31,21 @@ class DatePickerDemo extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return DateTimePicker(
-      dateTimePickerTheme: const DateTimePickerTheme(),
+      dateTimePickerTheme: const DateTimePickerTheme(
+          markedIndicatorColor: Colors.red,
+          selectedTheme: DateBoxSelectedTheme(
+            Color(0x4BF44336),
+            TextStyle(
+              color: Colors.red,
+            ),
+          ),
+          highlightTheme: DateBoxHighlightTheme(
+            Colors.red,
+            TextStyle(
+              color: Colors.white,
+            ),
+          )),
+      markedDates: [DateTime(2022, 9, 6)],
     );
   }
 }

lib/src/date_time_picker.dart

@@ -7,107 +7,107 @@ import 'package:flutter_date_time_picker/src/widgets/month_date_time_picker.dart
 import 'package:flutter_date_time_picker/src/widgets/week_date_time_picker/week_date_time_picker_sheet.dart';
 import 'package:intl/date_symbol_data_local.dart';
 
-/// A widget that displays a date picker from a sheet form the top of the screen.
-/// This sheet displays initially displays a week but can be dragged down to show a full month.
-/// Both views can be dragged sideways to show the next or previous week/month.
-///
-/// Example:
-/// ```dart
-/// DatePicker(
-///   dateTimePickerTheme: const DateTimePickerTheme()
-///   initialDate: selectedDate,
-///   highlightToday: true,
-///   onTapDay: (date) {
-///     setState(() {
-///       selectedDate = date;
-///     });
-///   },
-///   markedDates: [
-///     DateTime(2022, 3, 14),
-///   ],
-///   wrongTimeDialog:
-///   AlertDialog(
-///     title: const Text('Invalid Time'),
-///     content: SingleChildScrollView(
-///     child: ListBody(
-///     children: const <Widget>[
-///     Text(
-///       'The time you try to choose is diabled, try to pick another time.'),
-///     ],
-///    ),
-///   ),
-///     actions: <Widget>[
-///       TextButton(
-///         child: const Text('OK'),
-///          onPressed: () {
-///           Navigator.pop(context);
-///          },
-///         ),
-///       ],
-///      ),
-///   header: Container(
-///     height: 100,
-///     width: MediaQuery.of(context).size.width,
-///     padding: const EdgeInsets.only(bottom: 10),
-///     child: Row(
-///       crossAxisAlignment: CrossAxisAlignment.end,
-///       mainAxisAlignment: MainAxisAlignment.center,
-///       children: [
-///         const SizedBox(
-///           width: 160,
-///           height: 34,
-///           child: Center(
-///             child: Text(
-///               'Personal calendar',
-///               style: TextStyle(
-///                 fontSize: 16,
-///                 fontWeight: FontWeight.w900,
-///               ),
-///             ),
-///           ),
-///         ),
-///         const SizedBox(
-///           width: 4,
-///         ),
-///         Container(
-///           width: 160,
-///           height: 34,
-///           decoration: BoxDecoration(
-///             color: const Color(0xFF00273D),
-///             borderRadius: const BorderRadius.all(
-///               Radius.circular(10),
-///             ),
-///             boxShadow: [
-///               BoxShadow(
-///                 color: const Color(0xFF000000).withOpacity(0.50),
-///                 offset: const Offset(0, 6),
-///                 blurRadius: 9,
-///               ),
-///             ],
-///           ),
-///           child: const Center(
-///             child: Text(
-///               'Work calendar',
-///               style: TextStyle(
-///                 color: Colors.white,
-///                 fontSize: 16,
-///                 fontWeight: FontWeight.w900,
-///               ),
-///             ),
-///           ),
-///         ),
-///       ],
-///     ),
-///   ),
-///   child: Container(
-///     margin: const EdgeInsets.only(
-///       top: 195,
-///     ),
-///     child: HolidayRoster(),
-///   ),
-/// ),
-///```
 class DateTimePicker extends StatefulWidget {
+  /// A widget that displays a date picker from a sheet form the top of the screen.
+  /// This sheet displays initially displays a week but can be dragged down to show a full month.
+  /// Both views can be dragged sideways to show the next or previous week/month.
+  ///
+  /// Example:
+  /// ```dart
+  /// DatePicker(
+  ///   dateTimePickerTheme: const DateTimePickerTheme()
+  ///   initialDate: selectedDate,
+  ///   highlightToday: true,
+  ///   onTapDay: (date) {
+  ///     setState(() {
+  ///       selectedDate = date;
+  ///     });
+  ///   },
+  ///   markedDates: [
+  ///     DateTime(2022, 3, 14),
+  ///   ],
+  ///   wrongTimeDialog:
+  ///   AlertDialog(
+  ///     title: const Text('Invalid Time'),
+  ///     content: SingleChildScrollView(
+  ///     child: ListBody(
+  ///     children: const <Widget>[
+  ///     Text(
+  ///       'The time you try to choose is diabled, try to pick another time.'),
+  ///     ],
+  ///    ),
+  ///   ),
+  ///     actions: <Widget>[
+  ///       TextButton(
+  ///         child: const Text('OK'),
+  ///          onPressed: () {
+  ///           Navigator.pop(context);
+  ///          },
+  ///         ),
+  ///       ],
+  ///      ),
+  ///   header: Container(
+  ///     height: 100,
+  ///     width: MediaQuery.of(context).size.width,
+  ///     padding: const EdgeInsets.only(bottom: 10),
+  ///     child: Row(
+  ///       crossAxisAlignment: CrossAxisAlignment.end,
+  ///       mainAxisAlignment: MainAxisAlignment.center,
+  ///       children: [
+  ///         const SizedBox(
+  ///           width: 160,
+  ///           height: 34,
+  ///           child: Center(
+  ///             child: Text(
+  ///               'Personal calendar',
+  ///               style: TextStyle(
+  ///                 fontSize: 16,
+  ///                 fontWeight: FontWeight.w900,
+  ///               ),
+  ///             ),
+  ///           ),
+  ///         ),
+  ///         const SizedBox(
+  ///           width: 4,
+  ///         ),
+  ///         Container(
+  ///           width: 160,
+  ///           height: 34,
+  ///           decoration: BoxDecoration(
+  ///             color: const Color(0xFF00273D),
+  ///             borderRadius: const BorderRadius.all(
+  ///               Radius.circular(10),
+  ///             ),
+  ///             boxShadow: [
+  ///               BoxShadow(
+  ///                 color: const Color(0xFF000000).withOpacity(0.50),
+  ///                 offset: const Offset(0, 6),
+  ///                 blurRadius: 9,
+  ///               ),
+  ///             ],
+  ///           ),
+  ///           child: const Center(
+  ///             child: Text(
+  ///               'Work calendar',
+  ///               style: TextStyle(
+  ///                 color: Colors.white,
+  ///                 fontSize: 16,
+  ///                 fontWeight: FontWeight.w900,
+  ///               ),
+  ///             ),
+  ///           ),
+  ///         ),
+  ///       ],
+  ///     ),
+  ///   ),
+  ///   child: Container(
+  ///     margin: const EdgeInsets.only(
+  ///       top: 195,
+  ///     ),
+  ///     child: HolidayRoster(),
+  ///   ),
+  /// ),
+  ///```
   DateTimePicker({
     this.dateTimePickerTheme = const DateTimePickerTheme(),
     this.header,

lib/src/widgets/month_date_time_picker.dart/month_date_time_picker.dart

@@ -61,13 +61,6 @@ class MonthDateTimePicker extends StatelessWidget {
                     ? null
                     : () async {
                         TimeOfDay? timeOfDay;
-                        // await dateTimePickerController.getDragController().animateTo(
-                        //       0.26,
-                        //       duration: const Duration(
-                        //         milliseconds: 350,
-                        //       ),
-                        //       curve: Curves.ease,
-                        //     );
 
                         DateTime selectedDate = DateTime(
                           date.year,
@@ -131,7 +124,9 @@ class MonthDateTimePicker extends StatelessWidget {
                               width: monthDateBoxSize / 4,
                               height: monthDateBoxSize / 4,
                               decoration: BoxDecoration(
-                                color: Theme.of(context).indicatorColor,
+                                color: dateTimePickerController
+                                        .theme.markedIndicatorColor ??
+                                    Theme.of(context).indicatorColor,
                                 borderRadius: BorderRadius.circular(
                                     (monthDateBoxSize / 4) * 2),
                               ),

lib/src/widgets/month_date_time_picker.dart/month_date_time_picker_sheet.dart

@@ -30,10 +30,8 @@ class MonthDateTimePickerSheet extends StatelessWidget {
           DateFormat.yMMMM().format(
             dateTimePickerController.browsingDate,
           ),
-          style: Theme.of(context)
+          style: dateTimePickerController.theme.baseTheme.textStyle!
-              .textTheme
+              .copyWith(fontSize: 25),
-              .headlineMedium!
-              .copyWith(color: Colors.black),
         ),
         SizedBox(
           width: MediaQuery.of(context).size.width,

lib/src/widgets/week_date_time_picker/week_date_time_picker.dart

@@ -38,13 +38,6 @@ class WeekDateTimePicker extends StatelessWidget {
                 ? null
                 : () async {
                     TimeOfDay? timeOfDay;
-                    // await dateTimePickerController.getDragController().animateTo(
-                    //       0.26,
-                    //       duration: const Duration(
-                    //         milliseconds: 350,
-                    //       ),
-                    //       curve: Curves.ease,
-                    //     );
 
                     DateTime selectedDate = date.daysOfWeek()[index];
 
@@ -62,7 +55,8 @@ class WeekDateTimePicker extends StatelessWidget {
                           )) {
                         showDialog(
                           context: context,
-                          builder: (context) => dateTimePickerController.wrongTimeDialog!,
+                          builder: (context) =>
+                              dateTimePickerController.wrongTimeDialog!,
                         );
                       }
                     }
@@ -89,7 +83,7 @@ class WeekDateTimePicker extends StatelessWidget {
                           date.daysOfWeek().elementAt(index),
                         )
                         .toUpperCase()[0],
-                    style: Theme.of(context).textTheme.titleSmall,
+                    style: dateTimePickerController.theme.baseTheme.textStyle,
                   ),
                   const Spacer(),
                   Container(

lib/src/widgets/week_date_time_picker/week_date_time_picker_sheet.dart

@@ -45,7 +45,8 @@ class WeekDateTimePickerSheet extends StatelessWidget {
         if (showHeader) ...[
           Text(
             getDateHeader(),
-            style: Theme.of(context).textTheme.headlineSmall,
+            style: dateTimePickerController.theme.baseTheme.textStyle!
+                .copyWith(fontSize: 9),
           ),
           const SizedBox(
             height: 10,