51 lines
1.5 KiB
Dart
51 lines
1.5 KiB
Dart
import 'dart:async';
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import 'dart:math';
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import 'package:aves/image_providers/thumbnail_provider.dart';
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import 'package:aves/image_providers/uri_image_provider.dart';
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class EntryCache {
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static Future<void> evict(
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String uri,
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String mimeType,
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int? dateModifiedSecs,
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int oldRotationDegrees,
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bool oldIsFlipped,
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) async {
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// TODO TLAD provide pageId parameter for multi page items, if someday image editing features are added for them
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int? pageId;
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// evict fullscreen image
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await UriImage(
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uri: uri,
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mimeType: mimeType,
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pageId: pageId,
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rotationDegrees: oldRotationDegrees,
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isFlipped: oldIsFlipped,
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).evict();
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// evict low quality thumbnail (without specified extents)
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await ThumbnailProvider(ThumbnailProviderKey(
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uri: uri,
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mimeType: mimeType,
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pageId: pageId,
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dateModifiedSecs: dateModifiedSecs ?? 0,
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rotationDegrees: oldRotationDegrees,
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isFlipped: oldIsFlipped,
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)).evict();
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// evict higher quality thumbnails (with powers of 2 from 32 to 1024 as specified extents)
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final extents = List.generate(6, (index) => pow(2, index + 5).toDouble());
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await Future.forEach<double>(
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extents,
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(extent) => ThumbnailProvider(ThumbnailProviderKey(
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uri: uri,
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mimeType: mimeType,
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pageId: pageId,
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dateModifiedSecs: dateModifiedSecs ?? 0,
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rotationDegrees: oldRotationDegrees,
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isFlipped: oldIsFlipped,
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extent: extent,
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)).evict());
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}
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}
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