mirror of
https://github.com/Yubico/yubioath-flutter.git
synced 2024-12-02 05:50:34 +03:00
82 lines
2.7 KiB
Dart
82 lines
2.7 KiB
Dart
/*
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* Copyright (C) 2023 Yubico.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import 'dart:developer';
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import 'dart:io';
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import 'package:flutter/foundation.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import 'package:logging/logging.dart';
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import 'package:path/path.dart';
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import 'package:vector_graphics/vector_graphics.dart';
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import 'package:vector_graphics_compiler/vector_graphics_compiler.dart';
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import 'package:yubico_authenticator/app/logging.dart';
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import 'icon_cache.dart';
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final _log = Logger('icon_file_loader');
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class IconFileLoader extends BytesLoader {
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final WidgetRef _ref;
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final File _file;
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const IconFileLoader(this._ref, this._file);
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@override
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Future<ByteData> loadBytes(BuildContext? context) async {
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final cacheFileName = basename(_file.path);
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final memCache = _ref.read(iconCacheProvider).memCache;
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// check if the requested file exists in memory cache
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var cachedData = memCache.read(cacheFileName);
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if (cachedData != null) {
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_log.debug('Returning $cacheFileName image data from memory cache');
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return cachedData;
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}
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final fsCache = _ref.read(iconCacheProvider).fsCache;
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// check if the requested file exists in fs cache
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cachedData = await fsCache.read(cacheFileName);
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if (cachedData != null) {
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memCache.write(cacheFileName, cachedData.buffer.asUint8List());
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_log.debug('Returning $cacheFileName image data from fs cache');
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return cachedData;
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}
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final decodedData = await compute((File file) async {
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final fileData = await file.readAsString();
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final TimelineTask task = TimelineTask()..start('encodeSvg');
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final Uint8List compiledBytes = encodeSvg(
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xml: fileData,
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debugName: file.path,
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enableClippingOptimizer: false,
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enableMaskingOptimizer: false,
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enableOverdrawOptimizer: false,
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);
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task.finish();
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// for testing try: await Future.delayed(const Duration(seconds: 5));
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return compiledBytes;
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}, _file, debugLabel: 'Process SVG data');
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memCache.write(cacheFileName, decodedData);
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await fsCache.write(cacheFileName, decodedData);
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return decodedData.buffer.asByteData();
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}
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}
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