liangchengyou / wow_english

  import 'package:flutter/material.dart';

  import 'package:wow_english/common/extension/string_extension.dart';

  
  class WEAppBar extends StatelessWidget implements PreferredSizeWidget {
    final String? titleText;
    final bool? centerTitle;
    final VoidCallback? onBack;
    final Color? backgroundColor;
    final PreferredSizeWidget? bottom;

    final Widget? leading;
    final List<Widget>? actions;

    const WEAppBar({
      this.titleText,
      this.centerTitle = true,
      this.onBack,
      this.backgroundColor,
      this.bottom,

      this.leading,
      this.actions,

      super.key});
  
    @override
    Widget build(BuildContext context) {
      return AppBar(
        centerTitle: centerTitle,
        title: Text(titleText??''),

        leading: leading??GestureDetector(
          onTap: () {
            Navigator.pop(context);
          },
          child: Container(
            alignment: Alignment.center,
            child: Image.asset(

              'back_around'.assetPng,
              height: 40,
              width: 40,

            ),
          ),
        ),
        backgroundColor: backgroundColor??Colors.white,
        actions: actions??[],

      );
    }
  
    @override
    // TODO: implement preferredSize
    Size get preferredSize => Size.fromHeight(
        kToolbarHeight + (bottom == null ? 0.0 : bottom!.preferredSize.height));
  }