33 lines
772 B
Dart
33 lines
772 B
Dart
import 'dart:ui' as ui;
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import 'package:flutter/services.dart';
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class Assets {
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final Map<String, ui.Image> _loaded = {};
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final Set<String> _waiting = {};
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Future<ui.Image> _getImageAsync(String name) async {
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final assetImageByteData = await rootBundle.load(name);
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final codec =
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await ui.instantiateImageCodec(assetImageByteData.buffer.asUint8List());
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final image = (await codec.getNextFrame()).image;
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_loaded[name] = image;
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return image;
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}
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ui.Image? getImageIfAvailable(String name) {
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if (!_waiting.contains(name)) {
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_waiting.add(name);
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_getImageAsync(name);
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}
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return _loaded[name];
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}
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}
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final assets = Assets();
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ui.Image? getImageIfAvailable(String name) {
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return assets.getImageIfAvailable(name);
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}
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