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import 'package:flutter/material.dart';
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import 'package:flutter_screenutil/flutter_screenutil.dart';
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extension NumExt on num {
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///获取宽 SizedBox
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Widget get wb => SizedBox(width: this.w);
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///获取高 SizedBox
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Widget get hb => SizedBox(height: this.w);
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///获取 EdgeInsets.all
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EdgeInsets get edge => EdgeInsets.all(this.w);
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///圆角
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BorderRadius get radius => BorderRadius.circular(this.w);
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BorderRadius get topRadius => BorderRadius.vertical(
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top: Radius.circular(this.w),
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);
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BorderRadius get bottomRadius => BorderRadius.vertical(
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bottom: Radius.circular(this.w),
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);
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BorderRadius get leftRadius => BorderRadius.horizontal(
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left: Radius.circular(this.w),
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);
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BorderRadius get rightRadius => BorderRadius.horizontal(
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right: Radius.circular(this.w),
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);
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///每三位数加逗号
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String comma({int fixed = 2}) {
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bool notUseFixedFlag = fixed == -1;
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String _num =
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notUseFixedFlag ? this.toString() : this.toStringAsFixed(fixed);
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String str = '';
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int count = 0;
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if (_num.indexOf('.') == -1) {
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for (var i = _num.length - 1; i >= 0; i--) {
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if (count % 3 == 0 && count != 0) {
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str = _num.substring(i, i + 1) + ',' + str;
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} else {
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str = _num.substring(i, i + 1) + str;
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}
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count++;
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}
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return str;
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} else {
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for (var i = _num.indexOf('.') - 1; i >= 0; i--) {
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if (count % 3 == 0 && count != 0) {
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str = _num.substring(i, i + 1) + ',' + str;
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} else {
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str = _num.substring(i, i + 1) + str;
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}
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count++;
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}
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str = str + (_num.substring(_num.indexOf('.'), _num.length));
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return str;
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}
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}
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///指定位数输出，不足补0，
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///整数部分如果位数大于需要的位数按实际位数输出
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///只适用于整数
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String add0(int num) {
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var str = this.toString();
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if (str.length >= num) {
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return str;
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} else {
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int dif = num - str.length;
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for (var i = 0; i < dif; i++) {
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str = '0' + str;
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}
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return str;
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}
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}
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}
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