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feat: K线数据使用Decimal类型，防止数值精度丢失和溢出

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This commit is contained in:
sion
2026-04-07 23:04:27 +08:00
parent ab1486929f
commit 007915b6f2
86 changed files with 64527 additions and 63858 deletions
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21
flutter_monisuo/lib/ui/pages/chart/chart_page.dart
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@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
import 'package:flutter_chen_kchart/k_chart.dart';
import 'package:provider/provider.dart';
import 'package:shadcn_ui/shadcn_ui.dart';
import 'package:decimal/decimal.dart';
import '../../../core/theme/app_spacing.dart';
import '../../../core/theme/app_theme.dart';
import '../../../core/theme/app_theme_extension.dart';
@@ -144,12 +145,14 @@ class ChartPage extends StatelessWidget {
final lastCandle = candles.last;
final firstCandle = candles.first;
final change = lastCandle.close - firstCandle.open;
final changePercent = firstCandle.open != 0 ? (change / firstCandle.open) * 100 : 0;
final isUp = change >= 0;
final changePercent = firstCandle.open == Decimal.zero
? 0.0
: (change.toDouble() / firstCandle.openDouble * 100);
final isUp = change >= Decimal.fromInt(0);
double high24h = 0;
double low24h = double.infinity;
double volume24h = 0;
Decimal high24h = Decimal.fromInt(0);
Decimal low24h = Decimal.parse('999999999999');
Decimal volume24h = Decimal.fromInt(0);
for (var c in candles) {
if (c.high > high24h) high24h = c.high;
if (c.low < low24h) low24h = c.low;
@@ -171,7 +174,7 @@ class ChartPage extends StatelessWidget {
crossAxisAlignment: CrossAxisAlignment.end,
children: [
Text(
'\$${lastCandle.close.toStringAsFixed(2)}',
'\$${lastCandle.closeDouble.toStringAsFixed(2)}',
style: AppTextStyles.displaySmall(context).copyWith(
fontWeight: FontWeight.bold,
color: isUp ? context.appColors.up : context.appColors.down,
@@ -197,11 +200,11 @@ class ChartPage extends StatelessWidget {
const SizedBox(height: AppSpacing.sm),
Row(
children: [
_buildDataItem(context, '24h高', '\$${high24h.toStringAsFixed(2)}'),
_buildDataItem(context, '24h高', '\$${high24h.toDouble().toStringAsFixed(2)}'),
const SizedBox(width: AppSpacing.lg),
_buildDataItem(context, '24h低', '\$${low24h.toStringAsFixed(2)}'),
_buildDataItem(context, '24h低', '\$${low24h.toDouble().toStringAsFixed(2)}'),
const SizedBox(width: AppSpacing.lg),
_buildDataItem(context, '24h量', '${(volume24h / 1000).toStringAsFixed(1)}K'),
_buildDataItem(context, '24h量', '${(volume24h.toDouble() / 1000).toStringAsFixed(1)}K'),
],
),
],