feat: K线图改用k_chart库，支持完整技术指标(MA/BOLL/MACD/KDJ/RSI/VOL)

flutter_monisuo/lib/providers/chart_provider.dart

@@ -1,5 +1,5 @@
 import 'package:flutter/foundation.dart';
-import 'package:interactive_chart/interactive_chart.dart';
+import 'package:k_chart/entity/k_line_entity.dart';
 import '../models/candle.dart';
 
 /// 时间周期
@@ -16,26 +16,24 @@ enum ChartInterval {
   const ChartInterval(this.label, this.value);
 }
 
-/// 技术指标开关
+/// 技术指标设置
 class IndicatorSettings {
   final bool showMA;
   final bool showEMA;
   final bool showBOLL;
   final bool showVOL;
   final bool showMACD;
-  final int maPeriod;
-  final int emaPeriod;
-  final int bollPeriod;
+  final bool showKDJ;
+  final bool showRSI;
 
   const IndicatorSettings({
     this.showMA = true,
     this.showEMA = false,
     this.showBOLL = false,
     this.showVOL = true,
-    this.showMACD = false,
-    this.maPeriod = 7,
-    this.emaPeriod = 14,
-    this.bollPeriod = 20,
+    this.showMACD = true,
+    this.showKDJ = false,
+    this.showRSI = false,
   });
 
   IndicatorSettings copyWith({
@@ -44,9 +42,8 @@ class IndicatorSettings {
     bool? showBOLL,
     bool? showVOL,
     bool? showMACD,
-    int? maPeriod,
-    int? emaPeriod,
-    int? bollPeriod,
+    bool? showKDJ,
+    bool? showRSI,
   }) {
     return IndicatorSettings(
       showMA: showMA ?? this.showMA,
@@ -54,16 +51,14 @@ class IndicatorSettings {
       showBOLL: showBOLL ?? this.showBOLL,
       showVOL: showVOL ?? this.showVOL,
       showMACD: showMACD ?? this.showMACD,
-      maPeriod: maPeriod ?? this.maPeriod,
-      emaPeriod: emaPeriod ?? this.emaPeriod,
-      bollPeriod: bollPeriod ?? this.bollPeriod,
+      showKDJ: showKDJ ?? this.showKDJ,
+      showRSI: showRSI ?? this.showRSI,
     );
   }
 }
 
 /// K 线数据 Provider
 class ChartProvider extends ChangeNotifier {
-
   // 当前币种
   String _symbol = 'BTC';
   String get symbol => _symbol;
@@ -76,42 +71,22 @@ class ChartProvider extends ChangeNotifier {
   IndicatorSettings _indicators = const IndicatorSettings();
   IndicatorSettings get indicators => _indicators;
 
-  // K 线数据
+  // K 线数据（原始）
   List<Candle> _candles = [];
   List<Candle> get candles => _candles;
 
-  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;
+  // k_chart 需要的数据格式
+  List<KLineEntity> get klineData {
+    return _candles.map((c) {
+      return KLineEntity.fromCustom(
+        open: c.open,
+        high: c.high,
+        low: c.low,
+        close: c.close,
+        vol: c.volume,
+        time: c.timestamp,
+      );
+    }).toList();
   }
 
   // 状态
@@ -125,7 +100,7 @@ class ChartProvider extends ChangeNotifier {
   void setSymbol(String symbol) {
     if (_symbol != symbol) {
       _symbol = symbol;
-      loadCandles(); // 切换币种显示loading
+      loadCandles();
     }
   }
 
@@ -133,7 +108,7 @@ class ChartProvider extends ChangeNotifier {
   void setInterval(ChartInterval interval) {
     if (_interval != interval) {
       _interval = interval;
-      loadCandles(showLoading: false); // 切换时间周期不显示loading
+      loadCandles(showLoading: false);
     }
   }
 
@@ -153,11 +128,6 @@ class ChartProvider extends ChangeNotifier {
 
     try {
       // TODO: 对接真实 API
-      // final response = await _api.getKlineData(
-      //   symbol: _symbol,
-      //   interval: _interval.value,
-      // );
-
       // 临时使用模拟数据
       await Future.delayed(const Duration(milliseconds: 300));
       _candles = _generateMockCandles();