更新

lib/controller/date/CalendarController.dart

@@ -0,0 +1,59 @@
+import 'package:ef/ef.dart';
+
+class CalendarController extends GetControllerEx {
+  Rx<DateTime> displayedMonth = DateTime.now().obs;
+  Rx<DateTime?> selectedDate = Rx<DateTime?>(null);
+
+  List<DateTime> getDaysInMonth() {
+    DateTime firstDayOfMonth =
+        DateTime(displayedMonth.value.year, displayedMonth.value.month, 1);
+    DateTime lastDayOfMonth =
+        DateTime(displayedMonth.value.year, displayedMonth.value.month + 1, 0);
+    List<DateTime> days = [];
+
+    for (int i = 0; i < lastDayOfMonth.day; i++) {
+      days.add(firstDayOfMonth.add(Duration(days: i)));
+    }
+    return days;
+  }
+
+  List<List<DateTime>> getCalendarRows(List<DateTime> daysInMonth) {
+    List<List<DateTime>> calendarRows = [];
+    int firstWeekday = daysInMonth.first.weekday;
+    int emptyDays = (firstWeekday == 7 ? 6 : firstWeekday - 1);
+
+    List<DateTime> row = [];
+    for (int i = 0; i < emptyDays; i++) {
+      row.add(DateTime(0));
+    }
+
+    for (var day in daysInMonth) {
+      row.add(day);
+      if (row.length == 7) {
+        calendarRows.add(List.from(row));
+        row.clear();
+      }
+    }
+    if (row.isNotEmpty) {
+      while (row.length < 7) {
+        row.add(DateTime(0));
+      }
+      calendarRows.add(List.from(row));
+    }
+    return calendarRows;
+  }
+
+  void previousMonth() {
+    displayedMonth.value =
+        DateTime(displayedMonth.value.year, displayedMonth.value.month - 1, 1);
+  }
+
+  void nextMonth() {
+    displayedMonth.value =
+        DateTime(displayedMonth.value.year, displayedMonth.value.month + 1, 1);
+  }
+
+  void selectDate(DateTime date) {
+    selectedDate.value = date;
+  }
+}