174 lines
5.2 KiB
Dart
174 lines
5.2 KiB
Dart
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import 'package:flutter/material.dart';
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/// 按钮样式类型
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enum ButtonStyleType {
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primary, // 主样式:纯色背景,无边框
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secondary, // 次样式:白色背景,深灰文字,深灰边框
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}
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/// 自定义默认按钮(支持不可点击/禁用状态和防连点功能)
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class CustomButton extends StatefulWidget {
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final String text; // 按钮文字
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final Color backgroundColor; // 按钮背景色
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final double borderRadius; // 圆角半径(默认5)
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final VoidCallback? onPressed; // 点击事件回调
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final EdgeInsetsGeometry? padding; // 内边距
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final EdgeInsetsGeometry? margin; // 外边距
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final double? height; // 按钮高度
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final TextStyle? textStyle; // 文字样式
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/// 新增:是否可点击(true 可点,false 禁用)
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/// 注意:如果 onPressed 为 null,也会被视为不可点击
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final bool enabled;
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/// 新增:禁用时的背景色(可选)
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final Color? disabledBackgroundColor;
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/// 新增:禁用时的文字颜色(可选)
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final Color? disabledTextColor;
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/// 新增:文字颜色(可选)
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final Color? textColor;
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/// 新增:防连点间隔时间(毫秒)
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final int debounceInterval;
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/// 新增:按钮样式类型
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final ButtonStyleType buttonStyle;
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/// 新增:边框颜色(仅在 secondary 样式下使用,如不指定则使用默认深灰色)
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final Color? borderColor;
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/// 新增:边框宽度(仅在 secondary 样式下使用)
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final double borderWidth;
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const CustomButton({
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super.key,
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required this.text,
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this.backgroundColor = Colors.blue,
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this.borderRadius = 5.0,
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this.onPressed,
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this.padding,
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this.margin,
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this.height,
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this.textStyle,
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this.textColor,
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this.enabled = true,
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this.disabledBackgroundColor,
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this.disabledTextColor,
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this.debounceInterval = 1000, // 默认1秒防连点
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this.buttonStyle = ButtonStyleType.primary, // 默认为主样式
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this.borderColor,
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this.borderWidth = 1.0,
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});
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@override
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State<CustomButton> createState() => _CustomButtonState();
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}
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class _CustomButtonState extends State<CustomButton> {
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// 记录最后一次点击时间
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DateTime _lastClickTime = DateTime(0);
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@override
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Widget build(BuildContext context) {
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// 如果 enabled 为 false 或 onPressed 为 null,则视为不可点击
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final bool isEnabled = widget.enabled && widget.onPressed != null;
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// 根据按钮样式计算背景色、文字颜色和边框
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final Color bgColor;
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final Color textColor;
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final Color? borderColor;
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if (widget.buttonStyle == ButtonStyleType.secondary) {
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// 次样式:白色背景,深灰文字,深灰边框
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bgColor = isEnabled
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? Colors.white
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: (widget.disabledBackgroundColor ?? Colors.grey.shade200);
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textColor = isEnabled
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? Colors.grey[800]!
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: (widget.disabledTextColor ?? Colors.grey.shade500);
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borderColor = isEnabled
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? (widget.borderColor ?? Colors.grey.shade400)
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: (widget.disabledTextColor ?? Colors.grey.shade300);
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} else {
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// 主样式:原有逻辑
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bgColor = isEnabled
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? widget.backgroundColor
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: (widget.disabledBackgroundColor ?? Colors.grey.shade400);
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textColor = widget.textColor ?? (isEnabled ? Colors.white : (widget
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.disabledTextColor ?? Colors.white70));
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borderColor = null; // 主样式默认无边框
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}
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// 计算最终文字样式
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TextStyle finalTextStyle;
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if (widget.textStyle != null) {
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finalTextStyle = widget.textStyle!.copyWith(color: textColor);
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} else {
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finalTextStyle = TextStyle(
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color: textColor,
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fontSize: 14,
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fontWeight: FontWeight.bold,
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);
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}
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// 处理点击事件(添加防连点逻辑)
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void handleOnPressed() {
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final now = DateTime.now();
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if (now
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.difference(_lastClickTime)
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.inMilliseconds < widget.debounceInterval) {
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// 在防连点间隔内,不执行操作
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return;
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}
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_lastClickTime = now;
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if (widget.onPressed != null) {
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widget.onPressed!();
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}
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}
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// 构建边框
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final BoxBorder? border = borderColor != null
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? Border.all(
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color: borderColor,
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width: widget.borderWidth,
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)
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: null;
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// 点击拦截器 + 视觉反馈(禁用时降低不透明度)
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return Opacity(
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opacity: isEnabled ? 1.0 : 0.65,
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child: AbsorbPointer(
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absorbing: !isEnabled,
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child: GestureDetector(
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onTap: isEnabled ? handleOnPressed : null,
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child: Container(
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height: widget.height ?? 45,
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// 默认高度45
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padding: widget.padding ?? const EdgeInsets.all(6),
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// 默认内边距
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margin: widget.margin ?? const EdgeInsets.symmetric(horizontal: 5),
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// 默认外边距
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(widget.borderRadius),
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color: bgColor,
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border: border,
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),
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child: Center(
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child: Text(
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widget.text,
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style: finalTextStyle,
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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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