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ansu_ui/lib/extension/num_extension.dart

46 lines
1.2 KiB

import 'package:ansu_ui/ansu_ui.dart';
import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
extension NumExt on num {
///获取宽 SizedBox
Widget get wb => SizedBox(width: this.w);
///获取高 SizedBox
Widget get hb => SizedBox(height: this.w);
///圆角
BorderRadius get radius => BorderRadius.circular(this.w);
///每三位数加逗号
String comma({int fixed = 2}) {
bool notUseFixedFlag = fixed == -1;
String _num =
notUseFixedFlag ? this.toString() : this.toStringAsFixed(fixed);
String str = '';
int count = 0;
if (_num.indexOf('.') == -1) {
for (var i = _num.length - 1; i >= 0; i--) {
if (count % 3 == 0 && count != 0) {
str = _num.substring(i, i + 1) + ',' + str;
} else {
str = _num.substring(i, i + 1) + str;
}
count++;
}
return str;
} else {
for (var i = _num.indexOf('.') - 1; i >= 0; i--) {
if (count % 3 == 0 && count != 0) {
str = _num.substring(i, i + 1) + ',' + str;
} else {
str = _num.substring(i, i + 1) + str;
}
count++;
}
str = str + (_num.substring(_num.indexOf('.'), _num.length));
return str;
}
}
}