FurryChat/lib/components/image_bubble.dart
2020-09-09 13:54:55 +02:00

160 lines
5.1 KiB
Dart

import 'package:bubble/bubble.dart';
import 'package:famedlysdk/famedlysdk.dart';
import 'package:fluffychat/utils/app_route.dart';
import 'package:fluffychat/views/image_view.dart';
import 'package:flutter/material.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter_blurhash/flutter_blurhash.dart';
import 'package:cached_network_image/cached_network_image.dart';
class ImageBubble extends StatefulWidget {
final Event event;
final bool tapToView;
final BoxFit fit;
final bool maxSize;
final Color backgroundColor;
final double radius;
final bool thumbnailOnly;
const ImageBubble(
this.event, {
this.tapToView = true,
this.maxSize = true,
this.backgroundColor,
this.fit = BoxFit.cover,
this.radius = 10.0,
this.thumbnailOnly = true,
Key key,
}) : super(key: key);
@override
_ImageBubbleState createState() => _ImageBubbleState();
}
class _ImageBubbleState extends State<ImageBubble> {
bool get isUnencrypted => widget.event.content['url'] is String;
static final Map<String, MatrixFile> _matrixFileMap = {};
MatrixFile get _file => _matrixFileMap[widget.event.eventId];
set _file(MatrixFile file) {
if (file != null) {
_matrixFileMap[widget.event.eventId] = file;
}
}
static final Map<String, MatrixFile> _matrixThumbnailMap = {};
MatrixFile get _thumbnail => _matrixThumbnailMap[widget.event.eventId];
set _thumbnail(MatrixFile thumbnail) {
if (thumbnail != null) {
_matrixThumbnailMap[widget.event.eventId] = thumbnail;
}
}
dynamic _error;
bool _requestedFile = false;
Future<MatrixFile> _getFile() async {
_requestedFile = true;
if (widget.thumbnailOnly) return null;
if (_file != null) return _file;
return widget.event.downloadAndDecryptAttachment();
}
bool _requestedThumbnail = false;
Future<MatrixFile> _getThumbnail() async {
_requestedThumbnail = true;
if (isUnencrypted) return null;
if (_thumbnail != null) return _thumbnail;
return widget.event
.downloadAndDecryptAttachment(getThumbnail: widget.event.hasThumbnail);
}
@override
Widget build(BuildContext context) {
return Bubble(
padding: BubbleEdges.all(0),
radius: Radius.circular(widget.radius),
color: widget.backgroundColor ?? Theme.of(context).secondaryHeaderColor,
elevation: 0,
child: Container(
height: widget.maxSize ? 300 : null,
width: widget.maxSize ? 400 : null,
child: Builder(
builder: (BuildContext context) {
if (_error != null) {
return Center(
child: Text(
_error.toString(),
),
);
}
if (_thumbnail == null && !_requestedThumbnail && !isUnencrypted) {
_getThumbnail().then((MatrixFile thumbnail) {
setState(() => _thumbnail = thumbnail);
}, onError: (error, stacktrace) {
setState(() => _error = error);
});
}
if (_file == null && !widget.thumbnailOnly && !_requestedFile) {
_getFile().then((MatrixFile file) {
setState(() => _file = file);
}, onError: (error, stacktrace) {
setState(() => _error = error);
});
}
final display = _file ?? _thumbnail;
final generatePlaceholderWidget = () => Stack(
children: <Widget>[
if (widget.event.content['info'] is Map &&
widget.event.content['info']['xyz.amorgan.blurhash']
is String)
BlurHash(
hash: widget.event.content['info']
['xyz.amorgan.blurhash']),
Center(
child: CircularProgressIndicator(),
),
],
);
Widget renderWidget;
if (display != null) {
renderWidget = Image.memory(
display.bytes,
fit: widget.fit,
);
} else if (isUnencrypted) {
renderWidget = CachedNetworkImage(
imageUrl: Uri.parse(widget.event.content['url']).getThumbnail(
widget.event.room.client,
width: 800,
height: 800,
method: ThumbnailMethod.scale),
placeholder: (context, url) => generatePlaceholderWidget(),
fit: widget.fit,
);
} else {
renderWidget = generatePlaceholderWidget();
}
return InkWell(
onTap: () {
if (!widget.tapToView) return;
Navigator.of(context).push(
AppRoute(
ImageView(widget.event),
),
);
},
child: Hero(
tag: widget.event.eventId,
child: renderWidget,
),
);
},
),
),
);
}
}