feat: K线图添加MA均线、标准行情布局、买入卖出按钮

flutter_monisuo/lib/providers/chart_provider.dart

@@ -76,16 +76,39 @@ class ChartProvider extends ChangeNotifier {
   List<Candle> _candles = [];
   List<Candle> get candles => _candles;
 
-  List<CandleData> get candleData => _candles
-      .map((c) => CandleData(
-            timestamp: c.timestamp,
-            open: c.open,
-            high: c.high,
-            low: c.low,
-            close: c.close,
-            volume: c.volume,
-          ))
-      .toList();
+  List<CandleData> get candleData {
+    final baseData = _candles
+        .map((c) => CandleData(
+              timestamp: c.timestamp,
+              open: c.open,
+              high: c.high,
+              low: c.low,
+              close: c.close,
+              volume: c.volume,
+            ))
+        .toList();
+
+    // 如果开启MA，计算均线并添加到趋势线
+    if (_indicators.showMA && baseData.isNotEmpty) {
+      final ma7 = CandleData.computeMA(baseData, 7);
+      final ma14 = CandleData.computeMA(baseData, 14);
+      final ma30 = CandleData.computeMA(baseData, 30);
+
+      return List.generate(baseData.length, (i) {
+        return CandleData(
+          timestamp: baseData[i].timestamp,
+          open: baseData[i].open,
+          high: baseData[i].high,
+          low: baseData[i].low,
+          close: baseData[i].close,
+          volume: baseData[i].volume,
+          trends: [ma7[i], ma14[i], ma30[i]],
+        );
+      });
+    }
+
+    return baseData;
+  }
 
   // 状态
   bool _loading = false;