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// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'dart:async';
import 'dart:ui' as ui;
import 'package:flutter/foundation.dart';
import 'package:flutter/painting.dart';
class TestImageProvider extends ImageProvider<TestImageProvider> {
TestImageProvider(this.testImage);
final ui.Image testImage;
final Completer<ImageInfo> _completer = Completer<ImageInfo>.sync();
ImageConfiguration? configuration;
int loadCallCount = 0;
@override
Future<TestImageProvider> obtainKey(ImageConfiguration configuration) {
return SynchronousFuture<TestImageProvider>(this);
}
@override
void resolveStreamForKey(ImageConfiguration config, ImageStream stream, TestImageProvider key, ImageErrorListener handleError) {
configuration = config;
super.resolveStreamForKey(config, stream, key, handleError);
}
@override
ImageStreamCompleter load(TestImageProvider key, DecoderCallback decode) {
throw UnsupportedError('Use ImageProvider.loadImage instead.');
}
@override
ImageStreamCompleter loadBuffer(TestImageProvider key, DecoderBufferCallback decode) {
throw UnsupportedError('Use ImageProvider.loadImage instead.');
}
@override
ImageStreamCompleter loadImage(TestImageProvider key, ImageDecoderCallback decode) {
loadCallCount += 1;
return OneFrameImageStreamCompleter(_completer.future);
}
ImageInfo complete() {
final ImageInfo imageInfo = ImageInfo(image: testImage);
_completer.complete(imageInfo);
return imageInfo;
}
@override
String toString() => '${describeIdentity(this)}()';
}