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Preload the next memory

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This commit is contained in:
Vishnu Mohandas 2020-07-29 21:18:13 +05:30
parent 9f91c83f77
commit 590c72f2e5
3 changed files with 29 additions and 22 deletions
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24
lib/ui/detail_page.dart
View file

@ -106,30 +106,10 @@ class _DetailPageState extends State<DetailPage> {
void _preloadFiles(int index) {
if (index > 0) {
_preloadFile(_files[index - 1]);
preloadFile(_files[index - 1]);
}
if (index < _files.length - 1) {
_preloadFile(_files[index + 1]);
}
}
void _preloadFile(File file) {
if (file.fileType == FileType.video) {
return;
}
if (file.localId == null) {
file.getBytes().then((data) {
BytesLruCache.put(file, data);
});
} else {
final cachedFile = FileLruCache.get(file);
if (cachedFile == null) {
file.getAsset().then((asset) {
asset.file.then((assetFile) {
FileLruCache.put(file, assetFile);
});
});
}
preloadFile(_files[index + 1]);
}
}

4
lib/ui/memories_widget.dart
View file

@ -8,6 +8,7 @@ import 'package:photos/ui/thumbnail_widget.dart';
import 'package:photos/ui/video_widget.dart';
import 'package:photos/ui/zoomable_image.dart';
import 'package:photos/utils/date_time_util.dart';
import 'package:photos/utils/file_util.dart';
import 'package:photos/utils/share_util.dart';
class MemoriesWidget extends StatefulWidget {
@ -283,6 +284,9 @@ class _FullScreenMemoryState extends State<FullScreenMemory> {
setState(() {
_index = index;
});
if (index < widget.memories.length - 1) {
preloadFile(widget.memories[index + 1].file);
}
return index;
},
);

23
lib/utils/file_util.dart
View file

@ -1,6 +1,8 @@
import 'package:photo_manager/photo_manager.dart';
import 'package:photos/core/cache/image_cache.dart';
import 'package:photos/db/files_db.dart';
import 'package:photos/models/file.dart';
import 'package:photos/models/file_type.dart';
Future<void> deleteFiles(List<File> files,
{bool deleteEveryWhere = false}) async {
@ -12,3 +14,24 @@ Future<void> deleteFiles(List<File> files,
: await FilesDB.instance.delete(file);
}
}
void preloadFile(File file) {
if (file.fileType == FileType.video) {
return;
}
if (file.localId == null) {
if (BytesLruCache.get(file) == null) {
file.getBytes().then((data) {
BytesLruCache.put(file, data);
});
}
} else {
if (FileLruCache.get(file) == null) {
file.getAsset().then((asset) {
asset.file.then((assetFile) {
FileLruCache.put(file, assetFile);
});
});
}
}
}