forked from lxm_tools/flutter-picgo
55 lines
1.2 KiB
Dart
55 lines
1.2 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter_picgo/utils/shared_preferences.dart';
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class ThemeState with ChangeNotifier {
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ThemeMode _mode;
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ThemeMode get currentMode => _mode;
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static const Map<ThemeMode, String> modeMap = {
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ThemeMode.light: '浅色模式',
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ThemeMode.dark: '深色模式',
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ThemeMode.system: '跟随系统'
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};
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ThemeState() {
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_init();
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}
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_init() async {
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var sp = await SpUtil.getInstance();
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int localMode = sp.getInt(SharedPreferencesKeys.localThemeState) ?? 2;
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changeThemeState(_parseState(localMode));
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}
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changeThemeState(ThemeMode mode) async {
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_mode = mode;
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notifyListeners();
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// save state
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var sp = await SpUtil.getInstance();
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sp.putInt(SharedPreferencesKeys.localThemeState, _parseInt(mode));
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}
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/// num转enum
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/// 0：浅色模式 1：深色模式 2：跟随系统
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int _parseInt(ThemeMode s) {
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if (s == ThemeMode.light) {
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return 0;
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} else if (s == ThemeMode.dark) {
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return 1;
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} else {
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return 2;
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}
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}
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/// enmu转num
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ThemeMode _parseState(int mode) {
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if (mode == 0) {
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return ThemeMode.light;
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} else if (mode == 1) {
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return ThemeMode.dark;
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} else {
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return ThemeMode.system;
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}
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}
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}
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