417 lines
12 KiB
Dart
417 lines
12 KiB
Dart
import 'dart:async';
|
|
import 'dart:convert';
|
|
import 'dart:math';
|
|
import 'dart:typed_data';
|
|
|
|
import 'package:aves/model/entry.dart';
|
|
import 'package:aves/ref/mime_types.dart';
|
|
import 'package:aves/services/image_op_events.dart';
|
|
import 'package:aves/services/service_policy.dart';
|
|
import 'package:flutter/foundation.dart';
|
|
import 'package:flutter/services.dart';
|
|
import 'package:flutter/widgets.dart';
|
|
import 'package:streams_channel/streams_channel.dart';
|
|
|
|
abstract class ImageFileService {
|
|
Future<AvesEntry?> getEntry(String uri, String? mimeType);
|
|
|
|
Future<Uint8List> getSvg(
|
|
String uri,
|
|
String mimeType, {
|
|
int? expectedContentLength,
|
|
BytesReceivedCallback? onBytesReceived,
|
|
});
|
|
|
|
Future<Uint8List> getImage(
|
|
String uri,
|
|
String mimeType,
|
|
int? rotationDegrees,
|
|
bool isFlipped, {
|
|
int? pageId,
|
|
int? expectedContentLength,
|
|
BytesReceivedCallback? onBytesReceived,
|
|
});
|
|
|
|
// `rect`: region to decode, with coordinates in reference to `imageSize`
|
|
Future<Uint8List> getRegion(
|
|
String uri,
|
|
String mimeType,
|
|
int rotationDegrees,
|
|
bool isFlipped,
|
|
int sampleSize,
|
|
Rectangle<int> regionRect,
|
|
Size imageSize, {
|
|
int? pageId,
|
|
Object? taskKey,
|
|
int? priority,
|
|
});
|
|
|
|
Future<Uint8List> getThumbnail({
|
|
required String uri,
|
|
required String mimeType,
|
|
required int rotationDegrees,
|
|
required int? pageId,
|
|
required bool isFlipped,
|
|
required int? dateModifiedSecs,
|
|
required double extent,
|
|
Object? taskKey,
|
|
int? priority,
|
|
});
|
|
|
|
Future<void> clearSizedThumbnailDiskCache();
|
|
|
|
bool cancelRegion(Object taskKey);
|
|
|
|
bool cancelThumbnail(Object taskKey);
|
|
|
|
Future<T>? resumeLoading<T>(Object taskKey);
|
|
|
|
Stream<ImageOpEvent> delete(Iterable<AvesEntry> entries);
|
|
|
|
Stream<MoveOpEvent> move(
|
|
Iterable<AvesEntry> entries, {
|
|
required bool copy,
|
|
required String destinationAlbum,
|
|
});
|
|
|
|
Stream<ExportOpEvent> export(
|
|
Iterable<AvesEntry> entries, {
|
|
required String mimeType,
|
|
required String destinationAlbum,
|
|
});
|
|
|
|
Future<Map<String, dynamic>> rename(AvesEntry entry, String newName);
|
|
|
|
Future<Map<String, dynamic>> rotate(AvesEntry entry, {required bool clockwise});
|
|
|
|
Future<Map<String, dynamic>> flip(AvesEntry entry);
|
|
}
|
|
|
|
class PlatformImageFileService implements ImageFileService {
|
|
static const platform = MethodChannel('deckers.thibault/aves/image');
|
|
static final StreamsChannel _byteStreamChannel = StreamsChannel('deckers.thibault/aves/imagebytestream');
|
|
static final StreamsChannel _opStreamChannel = StreamsChannel('deckers.thibault/aves/imageopstream');
|
|
static const double thumbnailDefaultSize = 64.0;
|
|
|
|
static Map<String, dynamic> _toPlatformEntryMap(AvesEntry entry) {
|
|
return {
|
|
'uri': entry.uri,
|
|
'path': entry.path,
|
|
'pageId': entry.pageId,
|
|
'mimeType': entry.mimeType,
|
|
'width': entry.width,
|
|
'height': entry.height,
|
|
'rotationDegrees': entry.rotationDegrees,
|
|
'isFlipped': entry.isFlipped,
|
|
'dateModifiedSecs': entry.dateModifiedSecs,
|
|
'sizeBytes': entry.sizeBytes,
|
|
};
|
|
}
|
|
|
|
@override
|
|
Future<AvesEntry?> getEntry(String uri, String? mimeType) async {
|
|
try {
|
|
final result = await platform.invokeMethod('getEntry', <String, dynamic>{
|
|
'uri': uri,
|
|
'mimeType': mimeType,
|
|
}) as Map;
|
|
return AvesEntry.fromMap(result);
|
|
} on PlatformException catch (e) {
|
|
debugPrint('getEntry failed with code=${e.code}, exception=${e.message}, details=${e.details}');
|
|
}
|
|
return null;
|
|
}
|
|
|
|
@override
|
|
Future<Uint8List> getSvg(
|
|
String uri,
|
|
String mimeType, {
|
|
int? expectedContentLength,
|
|
BytesReceivedCallback? onBytesReceived,
|
|
}) =>
|
|
getImage(
|
|
uri,
|
|
mimeType,
|
|
0,
|
|
false,
|
|
expectedContentLength: expectedContentLength,
|
|
onBytesReceived: onBytesReceived,
|
|
);
|
|
|
|
@override
|
|
Future<Uint8List> getImage(
|
|
String uri,
|
|
String mimeType,
|
|
int? rotationDegrees,
|
|
bool isFlipped, {
|
|
int? pageId,
|
|
int? expectedContentLength,
|
|
BytesReceivedCallback? onBytesReceived,
|
|
}) {
|
|
try {
|
|
final completer = Completer<Uint8List>.sync();
|
|
final sink = _OutputBuffer();
|
|
var bytesReceived = 0;
|
|
_byteStreamChannel.receiveBroadcastStream(<String, dynamic>{
|
|
'uri': uri,
|
|
'mimeType': mimeType,
|
|
'rotationDegrees': rotationDegrees ?? 0,
|
|
'isFlipped': isFlipped,
|
|
'pageId': pageId,
|
|
}).listen(
|
|
(data) {
|
|
final chunk = data as Uint8List;
|
|
sink.add(chunk);
|
|
if (onBytesReceived != null) {
|
|
bytesReceived += chunk.length;
|
|
try {
|
|
onBytesReceived(bytesReceived, expectedContentLength);
|
|
} catch (error, stack) {
|
|
completer.completeError(error, stack);
|
|
return;
|
|
}
|
|
}
|
|
},
|
|
onError: completer.completeError,
|
|
onDone: () {
|
|
sink.close();
|
|
completer.complete(sink.bytes);
|
|
},
|
|
cancelOnError: true,
|
|
);
|
|
return completer.future;
|
|
} on PlatformException catch (e) {
|
|
debugPrint('getImage failed with code=${e.code}, exception=${e.message}, details=${e.details}');
|
|
}
|
|
return Future.sync(() => Uint8List(0));
|
|
}
|
|
|
|
@override
|
|
Future<Uint8List> getRegion(
|
|
String uri,
|
|
String mimeType,
|
|
int rotationDegrees,
|
|
bool isFlipped,
|
|
int sampleSize,
|
|
Rectangle<int> regionRect,
|
|
Size imageSize, {
|
|
int? pageId,
|
|
Object? taskKey,
|
|
int? priority,
|
|
}) {
|
|
return servicePolicy.call(
|
|
() async {
|
|
try {
|
|
final result = await platform.invokeMethod('getRegion', <String, dynamic>{
|
|
'uri': uri,
|
|
'mimeType': mimeType,
|
|
'pageId': pageId,
|
|
'sampleSize': sampleSize,
|
|
'regionX': regionRect.left,
|
|
'regionY': regionRect.top,
|
|
'regionWidth': regionRect.width,
|
|
'regionHeight': regionRect.height,
|
|
'imageWidth': imageSize.width.toInt(),
|
|
'imageHeight': imageSize.height.toInt(),
|
|
});
|
|
if (result != null) return result as Uint8List;
|
|
} on PlatformException catch (e) {
|
|
debugPrint('getRegion failed with code=${e.code}, exception=${e.message}, details=${e.details}');
|
|
}
|
|
return Uint8List(0);
|
|
},
|
|
priority: priority ?? ServiceCallPriority.getRegion,
|
|
key: taskKey,
|
|
);
|
|
}
|
|
|
|
@override
|
|
Future<Uint8List> getThumbnail({
|
|
required String uri,
|
|
required String mimeType,
|
|
required int rotationDegrees,
|
|
required int? pageId,
|
|
required bool isFlipped,
|
|
required int? dateModifiedSecs,
|
|
required double extent,
|
|
Object? taskKey,
|
|
int? priority,
|
|
}) {
|
|
if (mimeType == MimeTypes.svg) {
|
|
return Future.sync(() => Uint8List(0));
|
|
}
|
|
return servicePolicy.call(
|
|
() async {
|
|
try {
|
|
final result = await platform.invokeMethod('getThumbnail', <String, dynamic>{
|
|
'uri': uri,
|
|
'mimeType': mimeType,
|
|
'dateModifiedSecs': dateModifiedSecs,
|
|
'rotationDegrees': rotationDegrees,
|
|
'isFlipped': isFlipped,
|
|
'widthDip': extent,
|
|
'heightDip': extent,
|
|
'pageId': pageId,
|
|
'defaultSizeDip': thumbnailDefaultSize,
|
|
});
|
|
if (result != null) return result as Uint8List;
|
|
} on PlatformException catch (e) {
|
|
debugPrint('getThumbnail failed with code=${e.code}, exception=${e.message}, details=${e.details}');
|
|
}
|
|
return Uint8List(0);
|
|
},
|
|
priority: priority ?? (extent == 0 ? ServiceCallPriority.getFastThumbnail : ServiceCallPriority.getSizedThumbnail),
|
|
key: taskKey,
|
|
);
|
|
}
|
|
|
|
@override
|
|
Future<void> clearSizedThumbnailDiskCache() async {
|
|
try {
|
|
return platform.invokeMethod('clearSizedThumbnailDiskCache');
|
|
} on PlatformException catch (e) {
|
|
debugPrint('clearSizedThumbnailDiskCache failed with code=${e.code}, exception=${e.message}, details=${e.details}');
|
|
}
|
|
}
|
|
|
|
@override
|
|
bool cancelRegion(Object taskKey) => servicePolicy.pause(taskKey, [ServiceCallPriority.getRegion]);
|
|
|
|
@override
|
|
bool cancelThumbnail(Object taskKey) => servicePolicy.pause(taskKey, [ServiceCallPriority.getFastThumbnail, ServiceCallPriority.getSizedThumbnail]);
|
|
|
|
@override
|
|
Future<T>? resumeLoading<T>(Object taskKey) => servicePolicy.resume<T>(taskKey);
|
|
|
|
@override
|
|
Stream<ImageOpEvent> delete(Iterable<AvesEntry> entries) {
|
|
try {
|
|
return _opStreamChannel.receiveBroadcastStream(<String, dynamic>{
|
|
'op': 'delete',
|
|
'entries': entries.map(_toPlatformEntryMap).toList(),
|
|
}).map((event) => ImageOpEvent.fromMap(event));
|
|
} on PlatformException catch (e) {
|
|
debugPrint('delete failed with code=${e.code}, exception=${e.message}, details=${e.details}');
|
|
return Stream.error(e);
|
|
}
|
|
}
|
|
|
|
@override
|
|
Stream<MoveOpEvent> move(
|
|
Iterable<AvesEntry> entries, {
|
|
required bool copy,
|
|
required String destinationAlbum,
|
|
}) {
|
|
try {
|
|
return _opStreamChannel.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=${e.details}');
|
|
return Stream.error(e);
|
|
}
|
|
}
|
|
|
|
@override
|
|
Stream<ExportOpEvent> export(
|
|
Iterable<AvesEntry> entries, {
|
|
required String mimeType,
|
|
required String destinationAlbum,
|
|
}) {
|
|
try {
|
|
return _opStreamChannel.receiveBroadcastStream(<String, dynamic>{
|
|
'op': 'export',
|
|
'entries': entries.map(_toPlatformEntryMap).toList(),
|
|
'mimeType': mimeType,
|
|
'destinationPath': destinationAlbum,
|
|
}).map((event) => ExportOpEvent.fromMap(event));
|
|
} on PlatformException catch (e) {
|
|
debugPrint('export failed with code=${e.code}, exception=${e.message}, details=${e.details}');
|
|
return Stream.error(e);
|
|
}
|
|
}
|
|
|
|
@override
|
|
Future<Map<String, dynamic>> rename(AvesEntry entry, String newName) async {
|
|
try {
|
|
// returns map with: 'contentId' 'path' 'title' 'uri' (all optional)
|
|
final result = await platform.invokeMethod('rename', <String, dynamic>{
|
|
'entry': _toPlatformEntryMap(entry),
|
|
'newName': newName,
|
|
});
|
|
if (result != null) return (result as Map).cast<String, dynamic>();
|
|
} on PlatformException catch (e) {
|
|
debugPrint('rename failed with code=${e.code}, exception=${e.message}, details=${e.details}');
|
|
}
|
|
return {};
|
|
}
|
|
|
|
@override
|
|
Future<Map<String, dynamic>> rotate(AvesEntry entry, {required bool clockwise}) async {
|
|
try {
|
|
// returns map with: 'rotationDegrees' 'isFlipped'
|
|
final result = await platform.invokeMethod('rotate', <String, dynamic>{
|
|
'entry': _toPlatformEntryMap(entry),
|
|
'clockwise': clockwise,
|
|
});
|
|
if (result != null) return (result as Map).cast<String, dynamic>();
|
|
} on PlatformException catch (e) {
|
|
debugPrint('rotate failed with code=${e.code}, exception=${e.message}, details=${e.details}');
|
|
}
|
|
return {};
|
|
}
|
|
|
|
@override
|
|
Future<Map<String, dynamic>> flip(AvesEntry entry) async {
|
|
try {
|
|
// returns map with: 'rotationDegrees' 'isFlipped'
|
|
final result = await platform.invokeMethod('flip', <String, dynamic>{
|
|
'entry': _toPlatformEntryMap(entry),
|
|
});
|
|
if (result != null) return (result as Map).cast<String, dynamic>();
|
|
} on PlatformException catch (e) {
|
|
debugPrint('flip failed with code=${e.code}, exception=${e.message}, details=${e.details}');
|
|
}
|
|
return {};
|
|
}
|
|
}
|
|
|
|
// 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!;
|
|
}
|
|
}
|