yubioath-flutter/lib/oath/views/account_icon.dart
2024-04-15 17:07:56 +02:00

124 lines
3.6 KiB
Dart

/*
* Copyright (C) 2023 Yubico.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:path/path.dart';
import 'package:vector_graphics/vector_graphics.dart';
import '../../widgets/delayed_visibility.dart';
import '../icon_provider/icon_file_loader.dart';
import '../icon_provider/icon_pack.dart';
import '../icon_provider/icon_pack_manager.dart';
class AccountIcon extends ConsumerWidget {
final String? issuer;
final Widget defaultWidget;
static const double _width = 40;
static const double _height = 40;
const AccountIcon({
super.key,
required this.issuer,
required this.defaultWidget,
});
@override
Widget build(BuildContext context, WidgetRef ref) {
final iconPack = ref.watch(iconPackProvider);
return iconPack.when(
data: (IconPack? iconPack) {
final issuerImageFile = iconPack?.getFileForIssuer(issuer);
if (issuerImageFile == null) {
return defaultWidget;
}
return switch (extension(issuerImageFile.path)) {
'.svg' => _decodeSvg(ref, issuerImageFile),
'.jpg' || '.png' => _decodeRasterImage(ref, issuerImageFile),
_ => defaultWidget
};
},
error: (_, __) => defaultWidget,
loading: () => defaultWidget);
}
Widget _decodeSvg(WidgetRef ref, File file) {
return VectorGraphic(
width: _width,
height: _height,
fit: BoxFit.fill,
loader: IconFileLoader(ref, file),
placeholderBuilder: (BuildContext _) {
return SizedBox(
width: _width,
height: _height,
child: DelayedVisibility(
delay: const Duration(milliseconds: 10),
child: Stack(alignment: Alignment.center, children: [
Opacity(
opacity: 0.5,
child: defaultWidget,
),
const CircularProgressIndicator(),
]),
),
);
});
}
Widget _decodeRasterImage(WidgetRef ref, File file) {
return ClipOval(
// This clipper makes the oval small enough to hide artifacts
// on the oval border for images not supporting transparency.
clipper: _AccountIconClipper(_width, _height),
child: Image.file(
file,
filterQuality: FilterQuality.medium,
fit: BoxFit.cover,
alignment: Alignment.center,
width: _width,
height: _height,
errorBuilder: (_, __, ___) => defaultWidget,
),
);
}
}
class _AccountIconClipper extends CustomClipper<Rect> {
final double _width;
final double _height;
_AccountIconClipper(this._width, this._height);
@override
Rect getClip(Size size) {
return Rect.fromCenter(
center: Offset(_width / 2, _height / 2),
// make the rect smaller to hide artifacts
width: _width - 1,
height: _height - 1);
}
@override
bool shouldReclip(oldClipper) {
return true;
}
}