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@@ -1,5 +1,6 @@ |
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import 'dart:io'; |
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import 'package:flutter/material.dart'; |
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import 'package:loading_indicator/loading_indicator.dart'; |
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import 'package:photo_view/photo_view.dart'; |
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import 'package:photo_view/photo_view_gallery.dart'; |
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@@ -9,16 +10,25 @@ import 'package:zhiying_comm/zhiying_comm.dart'; |
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class PhotoPreview extends StatefulWidget { |
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List<PreviewImageData> previewImageDatas; |
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int index; |
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String heroTagSuffix; |
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PhotoPreview({Key key, this.previewImageDatas, this.index = 0}) |
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PhotoPreview( |
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{Key key, |
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this.previewImageDatas, |
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this.index = 0, |
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this.heroTagSuffix = ""}) |
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: super(key: key); |
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PhotoPreview._showPhotoViewByData( |
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{Key key, this.previewImageDatas, this.index}) |
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: super(key: key); |
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{Key key, |
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this.previewImageDatas, |
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this.index = 0, |
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this.heroTagSuffix = ""}) |
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: super(key: key) { |
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} |
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PhotoPreview._showPhotoViewByImages( |
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{Key key, List<String> images, this.index}) |
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{Key key, List<String> images, this.index = 0, this.heroTagSuffix = ""}) |
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: super(key: key) { |
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if (images != null) { |
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previewImageDatas = List(); |
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@@ -32,21 +42,23 @@ class PhotoPreview extends StatefulWidget { |
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///显示类型的一些预览 |
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static showPhotoPreview( |
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BuildContext context, List<PreviewImageData> previewImageDatas, |
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{int currentIndex = 0}) { |
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{int currentIndex = 0, String heroTagSuffix}) { |
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Navigator.of(context).push(new FadeRoute( |
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page: PhotoPreview._showPhotoViewByData( |
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previewImageDatas: previewImageDatas, |
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index: currentIndex, |
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heroTagSuffix: heroTagSuffix, |
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))); |
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} |
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///显示仅仅是一组list<String>类型的图片预览 |
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static showPhotoPreviewByimages(BuildContext context, List<String> images, |
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{int currentIndex = 0}) { |
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{int currentIndex = 0, String heroTagSuffix = ""}) { |
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Navigator.of(context).push(new FadeRoute( |
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page: PhotoPreview._showPhotoViewByImages( |
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images: images, |
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index: currentIndex, |
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heroTagSuffix: heroTagSuffix, |
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))); |
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} |
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@@ -71,7 +83,7 @@ class _PhotoPreviewState extends State<PhotoPreview> { |
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images: widget.previewImageDatas, |
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index: widget.index, |
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controller: pageController, |
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heroTag: "", |
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heroTagSuffix: widget.heroTagSuffix ?? "", |
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)); |
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} |
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} |
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@@ -100,7 +112,7 @@ enum PreviewImageType { |
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class PhotoViewGalleryScreen extends StatefulWidget { |
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List<PreviewImageData> images = []; |
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int index = 0; |
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String heroTag; |
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String heroTagSuffix; |
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PageController controller; |
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PhotoViewGalleryScreen( |
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@@ -108,7 +120,7 @@ class PhotoViewGalleryScreen extends StatefulWidget { |
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@required this.images, |
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this.index, |
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this.controller, |
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this.heroTag}) |
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this.heroTagSuffix}) |
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: super(key: key) { |
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controller = PageController(initialPage: index); |
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} |
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@@ -143,8 +155,10 @@ class _PhotoViewGalleryScreenState extends State<PhotoViewGalleryScreen> { |
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builder: (BuildContext context, int index) { |
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return PhotoViewGalleryPageOptions( |
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imageProvider: _buildPage(context, index), |
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heroAttributes: widget.heroTag.isNotEmpty |
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? PhotoViewHeroAttributes(tag: widget.heroTag) |
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heroAttributes: widget.heroTagSuffix.isNotEmpty |
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? PhotoViewHeroAttributes( |
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tag: (widget.images[index].data ?? "") + |
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widget.heroTagSuffix) |
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: null, |
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); |
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}, |
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@@ -152,6 +166,19 @@ class _PhotoViewGalleryScreenState extends State<PhotoViewGalleryScreen> { |
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loadFailedChild: Container( |
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child: Text("加载失败"), |
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), |
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loadingBuilder: (context,event){ |
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return Column( |
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mainAxisAlignment: MainAxisAlignment.center, |
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children: <Widget>[ |
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Container( |
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width: 48, |
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constraints: BoxConstraints(maxWidth: 48,maxHeight: 48), |
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height: 48, |
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child: LoadingIndicator(indicatorType: Indicator.ballSpinFadeLoader,color: Colors.white,) |
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), |
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], |
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); |
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}, |
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backgroundDecoration: BoxDecoration(color: Colors.black), |
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pageController: widget.controller, |
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enableRotation: true, |
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@@ -220,12 +247,9 @@ class FadeRoute extends PageRouteBuilder { |
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Animation<double> secondaryAnimation, |
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Widget child, |
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) => |
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ScaleTransition( |
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scale: animation, |
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child: FadeTransition( |
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opacity: animation, |
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child: child, |
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), |
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FadeTransition( |
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opacity: animation, |
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child: child, |
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), |
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); |
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} |