60 lines
1.5 KiB
Dart
Executable File
60 lines
1.5 KiB
Dart
Executable File
import 'package:flutter/material.dart';
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import 'package:i18n_extension/i18n_widget.dart';
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class TrendDisplay<T extends num> extends StatelessWidget {
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const TrendDisplay({super.key, required this.current, required this.previous, this.padding});
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final T current;
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final T previous;
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final EdgeInsetsGeometry? padding;
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@override
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Widget build(BuildContext context) {
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const upIcon = "▲";
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const downIcon = "▼";
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final upColor = Colors.lightGreenAccent.shade700;
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const downColor = Colors.redAccent;
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Color color;
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String icon;
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double percentage;
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if (previous > 0) {
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percentage = (current - previous) * 100.0;
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} else {
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percentage = 0.0;
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}
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final String percentageText = percentage.abs().toStringAsFixed(1).replaceAll('.', I18n.of(context).locale.languageCode != 'en' ? ',' : '.');
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if (!percentage.isNegative) {
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color = upColor;
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icon = upIcon;
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} else {
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color = downColor;
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icon = downIcon;
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}
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if (percentage == 0) {
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return const SizedBox();
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}
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return Padding(
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padding: padding ?? const EdgeInsets.symmetric(horizontal: 8.0),
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child: Row(
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children: [
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Padding(
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padding: const EdgeInsets.only(right: 2.0),
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child: Text(
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icon,
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style: TextStyle(fontSize: 18.0, color: color),
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),
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),
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Text("$percentageText%", style: TextStyle(color: color)),
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],
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),
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);
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}
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}
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