add chart code

2026-01-13 23:11:25 +08:00
parent 0a9f0b8583
commit 6b4d98f5ce
14 changed files with 938 additions and 41 deletions
@@ -0,0 +1,68 @@
+import 'package:flutter/material.dart';
+
+// 在 channel_sales_manager.dart 檔案下方或獨立檔案
+Future<String?> showMonthPicker(BuildContext context, String currentYYMM) async {
+  int selectedYear = int.parse(currentYYMM.substring(0, 4));
+  int selectedMonth = int.parse(currentYYMM.substring(4, 6));
+
+  return showDialog<String>(
+    context: context,
+    builder: (context) {
+      return StatefulBuilder(builder: (context, setDialogState) {
+        return AlertDialog(
+          title: Row(
+            mainAxisAlignment: MainAxisAlignment.spaceBetween,
+            children: [
+              IconButton(
+                icon: const Icon(Icons.chevron_left),
+                onPressed: () => setDialogState(() => selectedYear--),
+              ),
+              Text('$selectedYear 年'),
+              IconButton(
+                icon: const Icon(Icons.chevron_right),
+                onPressed: () => setDialogState(() => selectedYear++),
+              ),
+            ],
+          ),
+          content: SizedBox(
+            width: 300,
+            height: 200,
+            child: GridView.builder(
+              gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
+                crossAxisCount: 4,
+                childAspectRatio: 1.5,
+              ),
+              itemCount: 12,
+              itemBuilder: (context, index) {
+                int month = index + 1;
+                bool isSelected = month == selectedMonth;
+                return InkWell(
+                  onTap: () {
+                    String result = '$selectedYear${month.toString().padLeft(2, '0')}';
+                    Navigator.pop(context, result);
+                  },
+                  child: Container(
+                    margin: const EdgeInsets.all(4),
+                    decoration: BoxDecoration(
+                      color: isSelected ? Colors.blue : Colors.transparent,
+                      borderRadius: BorderRadius.circular(8),
+                    ),
+                    child: Center(
+                      child: Text(
+                        '$month月',
+                        style: TextStyle(
+                          color: isSelected ? Colors.white : Colors.black,
+                          fontWeight: isSelected ? FontWeight.bold : FontWeight.normal,
+                        ),
+                      ),
+                    ),
+                  ),
+                );
+              },
+            ),
+          ),
+        );
+      });
+    },
+  );
+}