142 lines
4 KiB
Dart
142 lines
4 KiB
Dart
import 'dart:typed_data';
|
|
|
|
import 'package:flutter/material.dart';
|
|
import 'package:logger/logger.dart';
|
|
import 'package:myapp/core/lru_map.dart';
|
|
import 'package:myapp/models/photo.dart';
|
|
import 'package:photo_manager/photo_manager.dart';
|
|
import 'package:photo_view/photo_view.dart';
|
|
import 'package:share_extend/share_extend.dart';
|
|
import 'extents_page_view.dart';
|
|
import 'loading_widget.dart';
|
|
import 'package:path/path.dart' as path;
|
|
import 'package:flutter_image_compress/flutter_image_compress.dart';
|
|
|
|
class DetailPage extends StatefulWidget {
|
|
final List<Photo> photos;
|
|
final int selectedIndex;
|
|
|
|
DetailPage(this.photos, this.selectedIndex, {Key key}) : super(key: key);
|
|
|
|
@override
|
|
_DetailPageState createState() => _DetailPageState();
|
|
}
|
|
|
|
class _DetailPageState extends State<DetailPage> {
|
|
bool _shouldDisableScroll = false;
|
|
int _selectedIndex = 0;
|
|
final _cachedImages = LRUMap<int, ZoomableImage>(5);
|
|
|
|
@override
|
|
void initState() {
|
|
super.initState();
|
|
}
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
_selectedIndex = widget.selectedIndex;
|
|
|
|
Logger().i("Loading " + widget.photos[_selectedIndex].toString());
|
|
var pageController = PageController(initialPage: _selectedIndex);
|
|
return Scaffold(
|
|
appBar: _buildAppBar(),
|
|
body: Center(
|
|
child: Container(
|
|
child: ExtentsPageView.extents(
|
|
itemBuilder: (context, index) {
|
|
if (_cachedImages.get(index) != null) {
|
|
return _cachedImages.get(index);
|
|
}
|
|
final image = ZoomableImage(
|
|
photo: widget.photos[index],
|
|
shouldDisableScroll: (value) {
|
|
setState(() {
|
|
_shouldDisableScroll = value;
|
|
});
|
|
},
|
|
);
|
|
_cachedImages.put(index, image);
|
|
return image;
|
|
},
|
|
onPageChanged: (int index) {
|
|
_selectedIndex = index;
|
|
},
|
|
physics: _shouldDisableScroll
|
|
? NeverScrollableScrollPhysics()
|
|
: PageScrollPhysics(),
|
|
controller: pageController,
|
|
itemCount: widget.photos.length,
|
|
),
|
|
),
|
|
),
|
|
);
|
|
}
|
|
|
|
AppBar _buildAppBar() {
|
|
return AppBar(
|
|
actions: <Widget>[
|
|
IconButton(
|
|
icon: Icon(Icons.share),
|
|
onPressed: () {
|
|
ShareExtend.share(widget.photos[_selectedIndex].localPath, "image");
|
|
},
|
|
)
|
|
],
|
|
);
|
|
}
|
|
}
|
|
|
|
class ZoomableImage extends StatelessWidget {
|
|
final Function(bool) shouldDisableScroll;
|
|
|
|
const ZoomableImage({
|
|
Key key,
|
|
@required this.photo,
|
|
this.shouldDisableScroll,
|
|
}) : super(key: key);
|
|
|
|
final Photo photo;
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
Logger().i("Building " + photo.generatedId.toString());
|
|
if (ImageLruCache.getData(photo.generatedId) != null) {
|
|
return _buildPhotoView(ImageLruCache.getData(photo.generatedId));
|
|
}
|
|
var future;
|
|
if (path.extension(photo.localPath) == '.HEIC') {
|
|
Logger().i("Decoding HEIC");
|
|
future = photo.getAsset().originBytes.then((bytes) =>
|
|
FlutterImageCompress.compressWithList(bytes)
|
|
.then((result) => Uint8List.fromList(result)));
|
|
} else {
|
|
future = AssetEntity(id: photo.localId).originBytes;
|
|
}
|
|
return FutureBuilder<Uint8List>(
|
|
future: future,
|
|
builder: (_, snapshot) {
|
|
if (snapshot.hasData) {
|
|
return _buildPhotoView(snapshot.data);
|
|
} else if (snapshot.hasError) {
|
|
return Text(snapshot.error);
|
|
} else {
|
|
return loadWidget;
|
|
}
|
|
},
|
|
);
|
|
}
|
|
|
|
Widget _buildPhotoView(Uint8List imageData) {
|
|
ValueChanged<PhotoViewScaleState> scaleStateChangedCallback = (value) {
|
|
if (shouldDisableScroll != null) {
|
|
shouldDisableScroll(value != PhotoViewScaleState.initial);
|
|
}
|
|
};
|
|
return PhotoView(
|
|
imageProvider: Image.memory(imageData).image,
|
|
scaleStateChangedCallback: scaleStateChangedCallback,
|
|
minScale: PhotoViewComputedScale.contained,
|
|
);
|
|
}
|
|
}
|