Flutter 自定义图文按钮 ImageButton

/*
Title: 图文按钮
Date: 2022-07-28
Author：飞羽
GitHub：https://github.com/feiyvflutter/Flutter/blob/master/image_button.dart
*/

/// 图文按钮
import 'package:flutter/material.dart';

enum IconTextAlignment {
iconTopTextBottom,//图在上文字在下
iconBottomTextTop,//图在下文字在上
iconLeftTextRight,//图在左文字在右
iconRightTextLeft,//图在右文字在左
}

class ImageButton extends StatelessWidget {
const ImageButton({
  Key? key,
  required this.onPressed,
  this.onLongPress,
  required this.icon,
  required this.label,
  this.alignment,
  this.interval = 4.0,
  this.shape,
  this.borderRadius = BorderRadius.zero,
  this.elevation,
  this.disabledElevation,
  this.textColor,
  this.disabledTextColor,
  this.backgroundColor,
  this.disabledBackgroundColor,
  this.padding,
  this.colorBrightness,
  this.focusColor,
  this.focusElevation,
  this.highlightColor,
  this.highlightElevation,
  this.hoverColor,
  this.hoverElevation,
  this.splashColor,
  this.enableFeedback = true,
  this.minWidth,
  this.height
}) : super(key: key);


///图文按钮-图片/图标
/// 注意：如果要设置按钮禁用状态的图标颜色，不要设置 Icon 颜色
///  - 可以直接设置 ImageButton的 textColor 和 disabledTextColor
final Icon icon;

///图文按钮-文字
/// 注意：如果要设置按钮禁用状态的文字颜色，不要设置 label 文字颜色
///     - 可以直接设置 ImageButton的 textColor 和 disabledTextColor
final Widget label;

///图文按钮-点击事件
final void Function() onPressed;
///图文按钮-长按事件
final void Function()? onLongPress;

///图文按钮-对齐方式
///
/// - iconTopTextBottom,//图在上文字在下
///
/// - iconBottomTextTop,//图在下文字在上
///
/// - iconLeftTextRight,//图在左文字在右
///
/// - iconRightTextLeft,//图在右文字在左
///
/// 默认 iconLeftTextRight 图在左文字在右
final IconTextAlignment? alignment;

///图文按钮-圆角设置
final BorderRadius? borderRadius;

///图文按钮-图片和文字之间的间隔
/// - 默认间隔 4.0
final double interval;

///图文按钮- 文字的颜色
final Color? textColor;
///图文按钮- 禁用状态文字的颜色
final Color? disabledTextColor;

///图文按钮-下方阴影的大小
final Color? backgroundColor;
///图文按钮-禁用状态背景色
final Color? disabledBackgroundColor;


///图文按钮-下方阴影的大小(注意-如果无效，请检查是否设置了背景色)
/// 如果想把背景色设置为透明色，但是有灰色背景，请将 elevation 设置为 0
final double? elevation;
///图文按钮-禁用状态阴影
final double? disabledElevation;

///图文按钮-内边距
final EdgeInsetsGeometry? padding;

///图文按钮-其他一些设置
final ShapeBorder? shape;
final Color? focusColor;
final Color? hoverColor;
final Color? highlightColor;
final Color? splashColor;
final Brightness? colorBrightness;

final double? focusElevation;
final double? hoverElevation;
final double? highlightElevation;
final bool enableFeedback;

final double? minWidth;
final double? height;

@override
Widget build(BuildContext context) {
  return ClipRRect(
      borderRadius: BorderRadius.circular(8),
      child: MaterialButton(
        onPressed: onPressed,
        onLongPress: onLongPress,
        elevation: elevation,
        color: backgroundColor,
        textColor: Colors.green,
        disabledColor: disabledBackgroundColor,
        disabledTextColor: disabledTextColor,
        disabledElevation: disabledElevation,
        shape: shape,
        padding: padding,
        focusColor: focusColor,
        focusElevation: focusElevation,
        hoverColor:hoverColor,
        hoverElevation: hoverElevation,
        highlightColor:highlightColor,
        highlightElevation: highlightElevation,
        splashColor:splashColor,
        enableFeedback:enableFeedback,
        minWidth: minWidth,
        height: height,
        child: buildChildWidget(),));
}

/// 获取对齐方式
IconTextAlignment getIconTextAlignment(){
  if(alignment == null){
      return IconTextAlignment.iconLeftTextRight;
  }
  return alignment!;
}

Widget buildChildWidget(){
  switch(getIconTextAlignment()){
    // 图在左文字在右
    case IconTextAlignment.iconLeftTextRight:{
      return Row(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
        icon,
        SizedBox(width: interval,),
        label
      ],);
    }

    //图在右文字在左
    case IconTextAlignment.iconRightTextLeft:{
      return Row(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
        label,
        SizedBox(width: interval,),
        icon
      ],);
    }

    //图在上文字在下
    case IconTextAlignment.iconTopTextBottom:{
      return Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
        icon,
        SizedBox(height: interval,),
        label
      ],);
    }

    // 图在下文字在上
    case IconTextAlignment.iconBottomTextTop:{
      return Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
        label,
        SizedBox(height: interval,),
        icon
      ],);
    }
  }
}



}