pikapika/lib/basic/config/Quality.dart

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