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Merge pull request #75 from KosukeSaigusa/64_create_image_detail_view
#64 画像詳細表示ビューの作成
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88 changes: 88 additions & 0 deletions
88
packages/dart_flutter_common/lib/src/image_detail_view.dart
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import 'package:flutter/material.dart'; | ||
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||
class DetailDisplayableImage extends StatelessWidget { | ||
DetailDisplayableImage({ | ||
required this.image, | ||
super.key, | ||
}); | ||
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final Image image; | ||
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/// インスタンス生成された回数。 | ||
/// Heroのタグとして使用。環境にもよるが2^64回でオーバーフロー | ||
/// そこまでの数生成されることはないため、この方法としている。 | ||
static int _instanceCount = 0; | ||
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@override | ||
Widget build(BuildContext context) { | ||
final tag = _instanceCount.toString(); | ||
_instanceCount++; | ||
return GestureDetector( | ||
onTap: () => Navigator.push<void>( | ||
context, | ||
MaterialPageRoute<void>( | ||
builder: (context) => _ImageDetailView( | ||
tag: tag, | ||
image: image, | ||
), | ||
), | ||
), | ||
child: Hero( | ||
tag: tag, | ||
child: image, | ||
), | ||
); | ||
} | ||
} | ||
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// 詳細画像表示 | ||
class _ImageDetailView extends StatelessWidget { | ||
_ImageDetailView({ | ||
required this.tag, | ||
required this.image, | ||
super.key, | ||
}); | ||
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final String tag; | ||
final Image image; | ||
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@override | ||
Widget build(BuildContext context) { | ||
return Stack( | ||
children: [ | ||
// 背景、タッチイベント捕捉Widget | ||
GestureDetector( | ||
onTap: () { | ||
Navigator.pop(context); | ||
}, | ||
child: Scaffold( | ||
floatingActionButtonLocation: FloatingActionButtonLocation.startTop, | ||
floatingActionButton: IconButton( | ||
icon: const Icon(Icons.close), | ||
onPressed: () { | ||
Navigator.pop(context); | ||
}, | ||
), | ||
body: Container( | ||
height: MediaQuery.of(context).size.height, | ||
width: MediaQuery.of(context).size.width, | ||
decoration: const BoxDecoration( | ||
color: Colors.black, | ||
), | ||
), | ||
), | ||
), | ||
// 画像表示Widget | ||
Center( | ||
child: InteractiveViewer( | ||
clipBehavior: Clip.none, | ||
child: Hero( | ||
tag: tag, | ||
child: image, | ||
), | ||
), | ||
), | ||
], | ||
); | ||
} | ||
} |
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packages/mottai_flutter_app/lib/development/image_detail_view/image_detail_view_stub.dart
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import 'package:dart_flutter_common/dart_flutter_common.dart'; | ||
import 'package:flutter/material.dart'; | ||
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/// 開発中の各ページへの導線を表示するページ。 | ||
class ImageDetailViewStubPage extends StatelessWidget { | ||
const ImageDetailViewStubPage({super.key}); | ||
@override | ||
Widget build(BuildContext context) { | ||
return Scaffold( | ||
appBar: AppBar( | ||
title: const Text('画像詳細拡大画面サンプル'), | ||
), | ||
body: DetailDisplayableImage( | ||
image: Image.network( | ||
'https://free-materials.com/adm/wp-content/uploads/2017/02/adtDSC_0905-300x199.jpg', | ||
), | ||
), | ||
); | ||
} | ||
} |