65 lines
1.8 KiB
Dart
65 lines
1.8 KiB
Dart
import 'dart:typed_data';
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import 'dart:ui' as ui show Codec;
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import 'package:aves/services/android_app_service.dart';
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import 'package:flutter/foundation.dart';
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import 'package:flutter/material.dart';
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class AppIconImage extends ImageProvider<AppIconImageKey> {
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const AppIconImage({
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@required this.packageName,
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@required this.size,
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this.scale = 1.0,
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}) : assert(packageName != null),
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assert(scale != null);
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final String packageName;
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final double size;
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final double scale;
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@override
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Future<AppIconImageKey> obtainKey(ImageConfiguration configuration) {
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return SynchronousFuture<AppIconImageKey>(AppIconImageKey(
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packageName: packageName,
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sizePixels: (size * configuration.devicePixelRatio).round(),
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scale: scale,
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));
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}
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@override
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ImageStreamCompleter load(AppIconImageKey key, DecoderCallback decode) {
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return MultiFrameImageStreamCompleter(
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codec: _loadAsync(key, decode),
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scale: key.scale,
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informationCollector: () sync* {
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yield ErrorDescription('packageName=$packageName, size=$size');
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},
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);
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}
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Future<ui.Codec> _loadAsync(AppIconImageKey key, DecoderCallback decode) async {
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final bytes = await AndroidAppService.getAppIcon(key.packageName, key.sizePixels);
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return await decode(bytes ?? Uint8List(0));
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}
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}
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class AppIconImageKey {
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final String packageName;
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final int sizePixels;
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final double scale;
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const AppIconImageKey({
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@required this.packageName,
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@required this.sizePixels,
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this.scale,
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});
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@override
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bool operator ==(Object other) {
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if (other.runtimeType != runtimeType) return false;
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return other is AppIconImageKey && other.packageName == packageName && other.sizePixels == sizePixels && other.scale == scale;
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}
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@override
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int get hashCode => hashValues(packageName, sizePixels, scale);
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}
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