83 lines
1.9 KiB
Dart
83 lines
1.9 KiB
Dart
/// 图片质量
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import 'package:flutter/material.dart';
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import '../Method.dart';
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const _ImageQualityOriginal = "original";
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const _ImageQualityLow = "low";
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const _ImageQualityMedium = "medium";
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const _ImageQualityHigh = "high";
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const _LabelOriginal = "原图";
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const _LabelLow = "低";
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const _LabelMedium = "中";
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const _LabelHigh = "高";
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var _qualities = {
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_LabelOriginal: _ImageQualityOriginal,
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_LabelLow: _ImageQualityLow,
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_LabelMedium: _ImageQualityMedium,
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_LabelHigh: _ImageQualityHigh,
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};
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const _propertyName = "quality";
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late String _currentQualityCode;
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const _defaultValue = _ImageQualityOriginal;
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Future<void> initQuality() async {
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_currentQualityCode = await method.loadProperty(_propertyName, _defaultValue);
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}
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String currentQualityCode() {
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return _currentQualityCode;
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}
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String currentQualityName() {
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for (var e in _qualities.entries) {
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if (e.value == _currentQualityCode) {
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return e.key;
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}
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}
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return '';
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}
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Future<void> chooseQuality(BuildContext context) async {
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String? code = await showDialog<String>(
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context: context,
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builder: (BuildContext context) {
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return SimpleDialog(
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title: const Text("请选择图片质量"),
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children: <Widget>[
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..._qualities.entries.map(
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(e) => SimpleDialogOption(
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child: Text(e.key),
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onPressed: () {
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Navigator.of(context).pop(e.value);
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},
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),
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),
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],
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);
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},
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);
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if (code != null) {
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method.saveProperty(_propertyName, code);
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_currentQualityCode = code;
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}
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}
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Widget qualitySetting() {
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return StatefulBuilder(
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builder: (BuildContext context, void Function(void Function()) setState) {
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return ListTile(
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title: const Text("浏览时的图片质量"),
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subtitle: Text(currentQualityName()),
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onTap: () async {
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await chooseQuality(context);
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setState(() {});
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},
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);
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},
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);
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}
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