285 lines
9.3 KiB
Dart
285 lines
9.3 KiB
Dart
import 'dart:async';
|
|
import 'dart:convert';
|
|
import 'dart:typed_data';
|
|
|
|
import 'package:aves/model/image_entry.dart';
|
|
import 'package:aves/services/service_policy.dart';
|
|
import 'package:flutter/foundation.dart';
|
|
import 'package:flutter/material.dart';
|
|
import 'package:flutter/services.dart';
|
|
import 'package:streams_channel/streams_channel.dart';
|
|
|
|
class ImageFileService {
|
|
static const platform = MethodChannel('deckers.thibault/aves/image');
|
|
static final StreamsChannel mediaStoreChannel = StreamsChannel('deckers.thibault/aves/mediastorestream');
|
|
static final StreamsChannel byteChannel = StreamsChannel('deckers.thibault/aves/imagebytestream');
|
|
static final StreamsChannel opChannel = StreamsChannel('deckers.thibault/aves/imageopstream');
|
|
static const double thumbnailDefaultSize = 64.0;
|
|
|
|
static Map<String, dynamic> _toPlatformEntryMap(ImageEntry entry) {
|
|
return {
|
|
'uri': entry.uri,
|
|
'path': entry.path,
|
|
'mimeType': entry.mimeType,
|
|
'width': entry.width,
|
|
'height': entry.height,
|
|
'orientationDegrees': entry.orientationDegrees,
|
|
'dateModifiedSecs': entry.dateModifiedSecs,
|
|
};
|
|
}
|
|
|
|
// knownEntries: map of contentId -> dateModifiedSecs
|
|
static Stream<ImageEntry> getImageEntries(Map<int, int> knownEntries) {
|
|
try {
|
|
return mediaStoreChannel.receiveBroadcastStream(<String, dynamic>{
|
|
'knownEntries': knownEntries,
|
|
}).map((event) => ImageEntry.fromMap(event));
|
|
} on PlatformException catch (e) {
|
|
debugPrint('getImageEntries failed with code=${e.code}, exception=${e.message}, details=${e.details}');
|
|
return Stream.error(e);
|
|
}
|
|
}
|
|
|
|
static Future<List> getObsoleteEntries(List<int> knownContentIds) async {
|
|
try {
|
|
final result = await platform.invokeMethod('getObsoleteEntries', <String, dynamic>{
|
|
'knownContentIds': knownContentIds,
|
|
});
|
|
return (result as List).cast<int>();
|
|
} on PlatformException catch (e) {
|
|
debugPrint('getObsoleteEntries failed with code=${e.code}, exception=${e.message}, details=${e.details}');
|
|
}
|
|
return [];
|
|
}
|
|
|
|
static Future<ImageEntry> getImageEntry(String uri, String mimeType) async {
|
|
debugPrint('getImageEntry for uri=$uri, mimeType=$mimeType');
|
|
try {
|
|
final result = await platform.invokeMethod('getImageEntry', <String, dynamic>{
|
|
'uri': uri,
|
|
'mimeType': mimeType,
|
|
}) as Map;
|
|
return ImageEntry.fromMap(result);
|
|
} on PlatformException catch (e) {
|
|
debugPrint('getImageEntry failed with code=${e.code}, exception=${e.message}, details=${e.details}');
|
|
}
|
|
return null;
|
|
}
|
|
|
|
static Future<Uint8List> getImage(String uri, String mimeType, {int expectedContentLength, BytesReceivedCallback onBytesReceived}) {
|
|
try {
|
|
final completer = Completer<Uint8List>.sync();
|
|
final sink = _OutputBuffer();
|
|
var bytesReceived = 0;
|
|
byteChannel.receiveBroadcastStream(<String, dynamic>{
|
|
'uri': uri,
|
|
'mimeType': mimeType,
|
|
}).listen(
|
|
(data) {
|
|
final chunk = data as Uint8List;
|
|
sink.add(chunk);
|
|
if (onBytesReceived != null) {
|
|
bytesReceived += chunk.length;
|
|
try {
|
|
onBytesReceived(bytesReceived, expectedContentLength);
|
|
} catch (error, stackTrace) {
|
|
completer.completeError(error, stackTrace);
|
|
return;
|
|
}
|
|
}
|
|
},
|
|
onError: completer.completeError,
|
|
onDone: () {
|
|
sink.close();
|
|
completer.complete(sink.bytes);
|
|
},
|
|
cancelOnError: true,
|
|
);
|
|
return completer.future;
|
|
} on PlatformException catch (e) {
|
|
debugPrint('getImage failed with code=${e.code}, exception=${e.message}, details=${e.details}');
|
|
}
|
|
return Future.sync(() => Uint8List(0));
|
|
}
|
|
|
|
static Future<Uint8List> getThumbnail(ImageEntry entry, double width, double height, {Object taskKey, int priority}) {
|
|
return servicePolicy.call(
|
|
() async {
|
|
try {
|
|
final result = await platform.invokeMethod('getThumbnail', <String, dynamic>{
|
|
'entry': _toPlatformEntryMap(entry),
|
|
'widthDip': width,
|
|
'heightDip': height,
|
|
'defaultSizeDip': thumbnailDefaultSize,
|
|
});
|
|
return result as Uint8List;
|
|
} on PlatformException catch (e) {
|
|
debugPrint('getThumbnail failed with code=${e.code}, exception=${e.message}, details=${e.details}');
|
|
}
|
|
return Uint8List(0);
|
|
},
|
|
// debugLabel: 'getThumbnail width=$width, height=$height entry=${entry.filenameWithoutExtension}',
|
|
priority: priority ?? (width == 0 || height == 0 ? ServiceCallPriority.getFastThumbnail : ServiceCallPriority.getSizedThumbnail),
|
|
key: taskKey,
|
|
);
|
|
}
|
|
|
|
static Future<void> clearSizedThumbnailDiskCache() async {
|
|
try {
|
|
return platform.invokeMethod('clearSizedThumbnailDiskCache');
|
|
} on PlatformException catch (e) {
|
|
debugPrint('clearSizedThumbnailDiskCache failed with code=${e.code}, exception=${e.message}, details=${e.details}');
|
|
}
|
|
}
|
|
|
|
static bool cancelThumbnail(Object taskKey) => servicePolicy.pause(taskKey, [ServiceCallPriority.getFastThumbnail, ServiceCallPriority.getSizedThumbnail]);
|
|
|
|
static Future<T> resumeThumbnail<T>(Object taskKey) => servicePolicy.resume<T>(taskKey);
|
|
|
|
static Stream<ImageOpEvent> delete(Iterable<ImageEntry> entries) {
|
|
try {
|
|
return opChannel.receiveBroadcastStream(<String, dynamic>{
|
|
'op': 'delete',
|
|
'entries': entries.map(_toPlatformEntryMap).toList(),
|
|
}).map((event) => ImageOpEvent.fromMap(event));
|
|
} on PlatformException catch (e) {
|
|
debugPrint('delete failed with code=${e.code}, exception=${e.message}, details=${e.details}');
|
|
return Stream.error(e);
|
|
}
|
|
}
|
|
|
|
static Stream<MoveOpEvent> move(Iterable<ImageEntry> entries, {@required bool copy, @required String destinationAlbum}) {
|
|
debugPrint('move ${entries.length} entries');
|
|
try {
|
|
return opChannel.receiveBroadcastStream(<String, dynamic>{
|
|
'op': 'move',
|
|
'entries': entries.map(_toPlatformEntryMap).toList(),
|
|
'copy': copy,
|
|
'destinationPath': destinationAlbum,
|
|
}).map((event) => MoveOpEvent.fromMap(event));
|
|
} on PlatformException catch (e) {
|
|
debugPrint('move failed with code=${e.code}, exception=${e.message}, details=${e.details}');
|
|
return Stream.error(e);
|
|
}
|
|
}
|
|
|
|
static Future<Map> rename(ImageEntry entry, String newName) async {
|
|
try {
|
|
// return map with: 'contentId' 'path' 'title' 'uri' (all optional)
|
|
final result = await platform.invokeMethod('rename', <String, dynamic>{
|
|
'entry': _toPlatformEntryMap(entry),
|
|
'newName': newName,
|
|
}) as Map;
|
|
return result;
|
|
} on PlatformException catch (e) {
|
|
debugPrint('rename failed with code=${e.code}, exception=${e.message}, details=${e.details}');
|
|
}
|
|
return {};
|
|
}
|
|
|
|
static Future<Map> rotate(ImageEntry entry, {@required bool clockwise}) async {
|
|
try {
|
|
// return map with: 'width' 'height' 'orientationDegrees' (all optional)
|
|
final result = await platform.invokeMethod('rotate', <String, dynamic>{
|
|
'entry': _toPlatformEntryMap(entry),
|
|
'clockwise': clockwise,
|
|
}) as Map;
|
|
return result;
|
|
} on PlatformException catch (e) {
|
|
debugPrint('rotate failed with code=${e.code}, exception=${e.message}, details=${e.details}');
|
|
}
|
|
return {};
|
|
}
|
|
}
|
|
|
|
@immutable
|
|
class ImageOpEvent {
|
|
final bool success;
|
|
final String uri;
|
|
|
|
const ImageOpEvent({
|
|
this.success,
|
|
this.uri,
|
|
});
|
|
|
|
factory ImageOpEvent.fromMap(Map map) {
|
|
return ImageOpEvent(
|
|
success: map['success'] ?? false,
|
|
uri: map['uri'],
|
|
);
|
|
}
|
|
|
|
@override
|
|
bool operator ==(Object other) {
|
|
if (other.runtimeType != runtimeType) return false;
|
|
return other is ImageOpEvent && other.success == success && other.uri == uri;
|
|
}
|
|
|
|
@override
|
|
int get hashCode => hashValues('ImageOpEvent', success, uri);
|
|
|
|
@override
|
|
String toString() {
|
|
return 'ImageOpEvent{success=$success, uri=$uri}';
|
|
}
|
|
}
|
|
|
|
class MoveOpEvent extends ImageOpEvent {
|
|
final Map newFields;
|
|
|
|
const MoveOpEvent({bool success, String uri, this.newFields})
|
|
: super(
|
|
success: success,
|
|
uri: uri,
|
|
);
|
|
|
|
factory MoveOpEvent.fromMap(Map map) {
|
|
return MoveOpEvent(
|
|
success: map['success'] ?? false,
|
|
uri: map['uri'],
|
|
newFields: map['newFields'],
|
|
);
|
|
}
|
|
|
|
@override
|
|
String toString() {
|
|
return 'MoveOpEvent{success=$success, uri=$uri, newFields=$newFields}';
|
|
}
|
|
}
|
|
|
|
// cf flutter/foundation `consolidateHttpClientResponseBytes`
|
|
typedef BytesReceivedCallback = void Function(int cumulative, int total);
|
|
|
|
// cf flutter/foundation `consolidateHttpClientResponseBytes`
|
|
class _OutputBuffer extends ByteConversionSinkBase {
|
|
List<List<int>> _chunks = <List<int>>[];
|
|
int _contentLength = 0;
|
|
Uint8List _bytes;
|
|
|
|
@override
|
|
void add(List<int> chunk) {
|
|
assert(_bytes == null);
|
|
_chunks.add(chunk);
|
|
_contentLength += chunk.length;
|
|
}
|
|
|
|
@override
|
|
void close() {
|
|
if (_bytes != null) {
|
|
// We've already been closed; this is a no-op
|
|
return;
|
|
}
|
|
_bytes = Uint8List(_contentLength);
|
|
var offset = 0;
|
|
for (final chunk in _chunks) {
|
|
_bytes.setRange(offset, offset + chunk.length, chunk);
|
|
offset += chunk.length;
|
|
}
|
|
_chunks = null;
|
|
}
|
|
|
|
Uint8List get bytes {
|
|
assert(_bytes != null);
|
|
return _bytes;
|
|
}
|
|
}
|