146 lines
3.8 KiB
Dart
146 lines
3.8 KiB
Dart
import 'package:flutter/material.dart';
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import '../../core/theme/app_color_scheme.dart';
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import '../../core/theme/app_spacing.dart';
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/// 交易按鈕組件 - 買入/賣出按鈕
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///
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/// 設計規則：
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/// - 漸變按鈕: 135度漸變
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/// - 圓角: xxl (24px / 1.5rem)
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/// - 買入: 翡翠綠漸變
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/// - 賣出: 紅色漸變
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class TradeButton extends StatelessWidget {
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final bool isBuy;
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final String? coinCode;
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final VoidCallback? onPressed;
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final bool isLoading;
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final bool fullWidth;
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const TradeButton({
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super.key,
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this.isBuy = true,
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this.coinCode,
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this.onPressed,
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this.isLoading = false,
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this.fullWidth = false,
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});
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/// 買入按鈕
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const TradeButton.buy({
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super.key,
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this.coinCode,
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this.onPressed,
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this.isLoading = false,
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this.fullWidth = false,
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}) : isBuy = true;
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/// 賣出按鈕
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const TradeButton.sell({
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super.key,
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this.coinCode,
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this.onPressed,
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this.isLoading = false,
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this.fullWidth = false,
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}) : isBuy = false;
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@override
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Widget build(BuildContext context) {
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final colorScheme = Theme.of(context).colorScheme;
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final gradient = isBuy ? AppColorScheme.buyGradient : AppColorScheme.sellGradient;
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final text = isBuy
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? '買入${coinCode != null ? ' $coinCode' : ''}'
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: '賣出${coinCode != null ? ' $coinCode' : ''}';
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// 主題感知顏色 - 在漸變背景上使用 onPrimary
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final textColor = colorScheme.onPrimary;
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return Container(
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width: fullWidth ? double.infinity : null,
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height: 48,
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decoration: BoxDecoration(
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gradient: gradient,
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borderRadius: BorderRadius.circular(AppRadius.xxl),
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),
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child: Material(
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color: Colors.transparent,
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child: InkWell(
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onTap: isLoading ? null : onPressed,
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borderRadius: BorderRadius.circular(AppRadius.xxl),
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child: Center(
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child: Row(
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mainAxisSize: fullWidth ? MainAxisSize.max : MainAxisSize.min,
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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if (isLoading)
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SizedBox.square(
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dimension: 16,
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child: CircularProgressIndicator(
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strokeWidth: 2,
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color: textColor,
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),
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)
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else
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Icon(
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isBuy ? Icons.arrow_downward_rounded : Icons.arrow_upward_rounded,
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size: 18,
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color: textColor,
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),
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const SizedBox(width: 8),
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Text(
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text,
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style: TextStyle(
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color: textColor,
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fontSize: 16,
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fontWeight: FontWeight.w600,
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),
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),
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],
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),
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),
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),
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),
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);
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}
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}
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/// 交易按鈕組 - 同時顯示買入和賣出按鈕
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class TradeButtonGroup extends StatelessWidget {
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final String? coinCode;
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final VoidCallback? onBuyPressed;
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final VoidCallback? onSellPressed;
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final bool isBuyLoading;
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final bool isSellLoading;
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const TradeButtonGroup({
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super.key,
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this.coinCode,
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this.onBuyPressed,
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this.onSellPressed,
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this.isBuyLoading = false,
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this.isSellLoading = false,
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});
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@override
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Widget build(BuildContext context) {
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return Row(
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children: [
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Expanded(
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child: TradeButton.buy(
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coinCode: coinCode,
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onPressed: onBuyPressed,
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isLoading: isBuyLoading,
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),
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),
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const SizedBox(width: AppSpacing.sm),
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Expanded(
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child: TradeButton.sell(
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coinCode: coinCode,
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onPressed: onSellPressed,
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isLoading: isSellLoading,
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),
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),
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],
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);
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}
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}
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