119 lines
4.2 KiB
Dart
119 lines
4.2 KiB
Dart
import 'dart:async';
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import 'dart:io';
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import 'dart:typed_data';
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import 'package:aves/model/image_entry.dart';
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import 'package:aves/services/service_policy.dart';
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import 'package:flutter/foundation.dart';
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import 'package:flutter/services.dart';
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import 'package:streams_channel/streams_channel.dart';
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class ImageFileService {
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static const platform = MethodChannel('deckers.thibault/aves/image');
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static final StreamsChannel streamsChannel = StreamsChannel('deckers.thibault/aves/imagestream');
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static Future<void> getImageEntries() async {
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try {
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await platform.invokeMethod('getImageEntries');
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} on PlatformException catch (e) {
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debugPrint('getImageEntries failed with code=${e.code}, exception=${e.message}, details=${e.details}');
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}
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}
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static Future<ImageEntry> getImageEntry(String uri, String mimeType) async {
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debugPrint('getImageEntry for uri=$uri, mimeType=$mimeType');
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try {
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final result = await platform.invokeMethod('getImageEntry', <String, dynamic>{
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'uri': uri,
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'mimeType': mimeType,
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}) as Map;
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return ImageEntry.fromMap(result);
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} on PlatformException catch (e) {
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debugPrint('getImageEntry failed with code=${e.code}, exception=${e.message}, details=${e.details}');
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}
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return null;
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}
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static Future<Uint8List> getImage(String uri, String mimeType) {
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try {
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final completer = Completer<Uint8List>();
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final bytesBuilder = BytesBuilder(copy: false);
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streamsChannel.receiveBroadcastStream(<String, dynamic>{
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'uri': uri,
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'mimeType': mimeType,
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}).listen(
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(data) => bytesBuilder.add(data as Uint8List),
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onError: completer.completeError,
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onDone: () => completer.complete(bytesBuilder.takeBytes()),
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cancelOnError: true,
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);
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return completer.future;
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} on PlatformException catch (e) {
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debugPrint('getImage failed with code=${e.code}, exception=${e.message}, details=${e.details}');
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}
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return Future.sync(() => Uint8List(0));
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}
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static Future<Uint8List> getThumbnail(ImageEntry entry, int width, int height, {Object cancellationKey}) {
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return servicePolicy.call(
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() async {
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if (width > 0 && height > 0) {
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try {
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final result = await platform.invokeMethod('getThumbnail', <String, dynamic>{
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'entry': entry.toMap(),
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'width': width,
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'height': height,
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});
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return result as Uint8List;
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} on PlatformException catch (e) {
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debugPrint('getThumbnail failed with code=${e.code}, exception=${e.message}, details=${e.details}');
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}
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}
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return Uint8List(0);
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},
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priority: ServiceCallPriority.asap,
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debugLabel: 'getThumbnail-${entry.path}',
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cancellationKey: cancellationKey,
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);
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}
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static Future<int> delete(List<ImageEntry> entries) async {
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try {
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await platform.invokeMethod('delete', <String, dynamic>{
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'entries': entries.map((e) => e.toMap()).toList(),
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});
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return 1;
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} on PlatformException catch (e) {
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debugPrint('delete failed with code=${e.code}, exception=${e.message}, details=${e.details}');
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}
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return 0;
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}
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static Future<Map> rename(ImageEntry entry, String newName) async {
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try {
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// return map with: 'contentId' 'path' 'title' 'uri' (all optional)
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final result = await platform.invokeMethod('rename', <String, dynamic>{
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'entry': entry.toMap(),
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'newName': newName,
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}) as Map;
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return result;
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} on PlatformException catch (e) {
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debugPrint('rename failed with code=${e.code}, exception=${e.message}, details=${e.details}');
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}
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return {};
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}
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static Future<Map> rotate(ImageEntry entry, {@required bool clockwise}) async {
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try {
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// return map with: 'width' 'height' 'orientationDegrees' (all optional)
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final result = await platform.invokeMethod('rotate', <String, dynamic>{
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'entry': entry.toMap(),
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'clockwise': clockwise,
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}) as Map;
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return result;
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} on PlatformException catch (e) {
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debugPrint('rotate failed with code=${e.code}, exception=${e.message}, details=${e.details}');
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}
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return {};
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}
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}
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