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debug: 添加平移调试信息

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hailin 2026-01-19 21:30:41 -08:00
parent 684367941d
commit 7ae58e98e6
1 changed files with 5 additions and 0 deletions
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5
frontend/mining-app/lib/presentation/widgets/kline_chart/kline_chart_widget.dart
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@ -537,12 +537,17 @@ class _KlineChartWidgetState extends State<KlineChartWidget> {
_userHasPanned = true; // 缩放后也标记为已操作 _userHasPanned = true; // 缩放后也标记为已操作
} else if (_startFocalPoint != null) { } else if (_startFocalPoint != null) {
// 单指平移 // 单指平移
// dx > 0 向右滑（看更早历史），dx < 0 向左滑（看更新数据）
final dx = details.focalPoint.dx - _startFocalPoint!.dx; final dx = details.focalPoint.dx - _startFocalPoint!.dx;
// 最大滚动位置：让最新K线在屏幕中心 // 最大滚动位置：让最新K线在屏幕中心
final int halfScreenCount = (_chartWidth / 2 / _candleWidth).ceil(); final int halfScreenCount = (_chartWidth / 2 / _candleWidth).ceil();
final double maxScroll = math.max(0.0, (widget.klines.length - halfScreenCount) * _candleWidth); final double maxScroll = math.max(0.0, (widget.klines.length - halfScreenCount) * _candleWidth);
// 向右滑 dx>0，scrollX 减小，显示更早的数据
_scrollX = (_startScrollX - dx).clamp(0.0, maxScroll); _scrollX = (_startScrollX - dx).clamp(0.0, maxScroll);
_userHasPanned = true; _userHasPanned = true;
// DEBUG: 打印滚动信息
debugPrint('Pan: dx=$dx, scrollX=$_scrollX, maxScroll=$maxScroll, startIndex=${(_scrollX / _candleWidth).floor()}');
} }
}); });
} }