🐛 Fixes issue #290.

example/lib/main.dart

@@ -39,60 +39,77 @@ List<CalendarEventData> _events = [
     date: _now,
     title: "Project meeting",
     description: "Today is project meeting.",
-    startTime: DateTime(_now.year, _now.month, _now.day, 18, 30),
-    endTime: DateTime(_now.year, _now.month, _now.day, 22),
+    startTime: DateTime(_now.year, _now.month, _now.day, 6),
+    endTime: DateTime(_now.year, _now.month, _now.day, 7),
   ),
   CalendarEventData(
-    date: _now.add(Duration(days: 1)),
-    startTime: DateTime(_now.year, _now.month, _now.day, 18),
-    endTime: DateTime(_now.year, _now.month, _now.day, 19),
-    title: "Wedding anniversary",
-    description: "Attend uncle's wedding anniversary.",
+    date: _now,
+    title: "Project meeting",
+    description: "Today is project meeting.",
+    startTime: DateTime(_now.year, _now.month, _now.day, 7),
+    endTime: DateTime(_now.year, _now.month, _now.day, 7, 45),
   ),
   CalendarEventData(
     date: _now,
-    startTime: DateTime(_now.year, _now.month, _now.day, 14),
-    endTime: DateTime(_now.year, _now.month, _now.day, 17),
+    startTime: DateTime(_now.year, _now.month, _now.day, 7),
+    endTime: DateTime(_now.year, _now.month, _now.day, 15),
     title: "Football Tournament",
     description: "Go to football tournament.",
   ),
   CalendarEventData(
-    date: _now.add(Duration(days: 3)),
-    startTime: DateTime(_now.add(Duration(days: 3)).year,
-        _now.add(Duration(days: 3)).month, _now.add(Duration(days: 3)).day, 10),
-    endTime: DateTime(_now.add(Duration(days: 3)).year,
-        _now.add(Duration(days: 3)).month, _now.add(Duration(days: 3)).day, 14),
-    title: "Sprint Meeting.",
-    description: "Last day of project submission for last year.",
+    date: _now,
+    startTime: DateTime(_now.year, _now.month, _now.day, 7, 45),
+    endTime: DateTime(_now.year, _now.month, _now.day, 8, 30),
+    title: "This is football",
+    description: "Go to football tournament.",
+  ),
+  CalendarEventData(
+    date: _now,
+    startTime: DateTime(_now.year, _now.month, _now.day, 7, 45),
+    endTime: DateTime(_now.year, _now.month, _now.day, 8, 30),
+    title: "Wedding anniversary 2",
+    description: "Attend 2nd uncle's wedding anniversary.",
+  ),
+  CalendarEventData(
+    date: _now,
+    startTime: DateTime(_now.year, _now.month, _now.day, 8, 30),
+    endTime: DateTime(_now.year, _now.month, _now.day, 9, 15),
+    title: "Wedding anniversary",
+    description: "Attend uncle's wedding anniversary.",
+  ),
+  CalendarEventData(
+    date: _now,
+    startTime: DateTime(_now.year, _now.month, _now.day, 8, 30),
+    endTime: DateTime(_now.year, _now.month, _now.day, 9, 15),
+    title: "Wedding anniversary 3rd",
+    description: "Attend Another uncle's wedding anniversary.",
+  ),
+  CalendarEventData(
+    date: _now,
+    startTime: DateTime(_now.year, _now.month, _now.day, 9, 15),
+    endTime: DateTime(_now.year, _now.month, _now.day, 10),
+    title: "Wedding anniversary",
+    description: "Attend uncle's wedding anniversary.",
+  ),
+  CalendarEventData(
+    date: _now,
+    startTime: DateTime(_now.year, _now.month, _now.day, 12, 15),
+    endTime: DateTime(_now.year, _now.month, _now.day, 13),
+    title: "Wedding anniversary",
+    description: "Attend uncle's wedding anniversary.",
   ),
   CalendarEventData(
-    date: _now.subtract(Duration(days: 2)),
-    startTime: DateTime(
-        _now.subtract(Duration(days: 2)).year,
-        _now.subtract(Duration(days: 2)).month,
-        _now.subtract(Duration(days: 2)).day,
-        14),
-    endTime: DateTime(
-        _now.subtract(Duration(days: 2)).year,
-        _now.subtract(Duration(days: 2)).month,
-        _now.subtract(Duration(days: 2)).day,
-        16),
-    title: "Team Meeting",
-    description: "Team Meeting",
+    date: _now,
+    startTime: DateTime(_now.year, _now.month, _now.day, 13),
+    endTime: DateTime(_now.year, _now.month, _now.day, 14),
+    title: "Wedding anniversary",
+    description: "Attend uncle's wedding anniversary.",
   ),
   CalendarEventData(
-    date: _now.subtract(Duration(days: 2)),
-    startTime: DateTime(
-        _now.subtract(Duration(days: 2)).year,
-        _now.subtract(Duration(days: 2)).month,
-        _now.subtract(Duration(days: 2)).day,
-        10),
-    endTime: DateTime(
-        _now.subtract(Duration(days: 2)).year,
-        _now.subtract(Duration(days: 2)).month,
-        _now.subtract(Duration(days: 2)).day,
-        12),
-    title: "Chemistry Viva",
-    description: "Today is Joe's birthday.",
+    date: _now,
+    startTime: DateTime(_now.year, _now.month, _now.day, 13),
+    endTime: DateTime(_now.year, _now.month, _now.day, 14),
+    title: "Wedding anniversary 4",
+    description: "Attend uncle's uncle's wedding anniversary.",
   ),
 ];

example/lib/widgets/day_view_widget.dart

@@ -20,7 +20,7 @@ class DayViewWidget extends StatelessWidget {
       width: width,
       startDuration: Duration(hours: 8),
       showHalfHours: true,
-      heightPerMinute: 3,
+      heightPerMinute: 1,
       timeLineBuilder: _timeLineBuilder,
       hourIndicatorSettings: HourIndicatorSettings(
         color: Theme.of(context).dividerColor,

example/pubspec.yaml

@@ -29,7 +29,7 @@ dependencies:
   # Use with the CupertinoIcons class for iOS style icons.
   cupertino_icons: ^1.0.2
   intl:
-  flutter_colorpicker: ^0.6.0
+  flutter_colorpicker: ^1.1.0
   calendar_view:
     path: ../
 

lib/src/calendar_event_data.dart

@@ -15,7 +15,7 @@ class CalendarEventData<T extends Object?> {
 
   /// Defines the start time of the event.
   /// [endTime] and [startTime] will defines time on same day.
-  /// This is required when you are using [CalendarEventData] for [DayView]
+  /// This is required when you are using [CalendarEventData] for [DayView] or [WeekView]
   final DateTime? startTime;
 
   /// Defines the end time of the event.
@@ -81,6 +81,24 @@ class CalendarEventData<T extends Object?> {
         (startTime!.isDayStart && endTime!.isDayStart));
   }
 
+  Duration get duration {
+    if (isFullDayEvent) return Duration(days: 1);
+
+    final now = DateTime.now();
+
+    final end = now.copyFromMinutes(endTime!.getTotalMinutes);
+    final start = now.copyFromMinutes(startTime!.getTotalMinutes);
+
+    if (end.isDayStart) {
+      final difference =
+          end.add(Duration(days: 1) - Duration(seconds: 1)).difference(start);
+
+      return difference + Duration(seconds: 1);
+    } else {
+      return end.difference(start);
+    }
+  }
+
   /// Returns a boolean that defines whether current event is occurring on
   /// [currentDate] or not.
   ///

lib/src/event_arrangers/merge_event_arranger.dart

@@ -40,10 +40,13 @@ class MergeEventArranger<T extends Object?> extends EventArranger<T> {
 
     //Checking if startTime and endTime are correct
     for (final event in events) {
+      if (event.startTime == null || event.endTime == null) {
+        debugLog('startTime or endTime is null for ${event.title}');
+        continue;
+      }
+
       // Checks if an event has valid start and end time.
-      if (event.startTime == null ||
-          event.endTime == null ||
-          event.endTime!.getTotalMinutes <= event.startTime!.getTotalMinutes) {
+      if (event.endTime!.getTotalMinutes <= event.startTime!.getTotalMinutes) {
         if (!(event.endTime!.getTotalMinutes == 0 &&
             event.startTime!.getTotalMinutes > 0)) {
           assert(() {