clean up

lib/pages/widgets/show_multiple_img.dart

@@ -0,0 +1,74 @@
+import 'package:fcs/helpers/theme.dart';
+import 'package:fcs/pages/widgets/display_image_source.dart';
+import 'package:flutter/material.dart';
+import 'package:photo_view/photo_view.dart';
+import 'package:photo_view/photo_view_gallery.dart';
+
+class ShowMultiImage extends StatefulWidget {
+  final List<DisplayImageSource> displayImageSources;
+  final int initialPage;
+  const ShowMultiImage(
+      {Key key, this.displayImageSources, this.initialPage = 0})
+      : super(key: key);
+  @override
+  _ShowMultiImageState createState() => _ShowMultiImageState();
+}
+
+class _ShowMultiImageState extends State<ShowMultiImage> {
+  PageController pageController;
+  @override
+  void initState() {
+    pageController = PageController(initialPage: widget.initialPage);
+    super.initState();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return SafeArea(
+      child: Scaffold(
+          backgroundColor: primaryColor,
+          body: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              IconButton(
+                onPressed: () => Navigator.pop(context),
+                icon: Icon(
+                  Icons.close,
+                  color: Colors.white,
+                ),
+              ),
+              Expanded(
+                  child: PhotoViewGallery.builder(
+                scrollPhysics: const BouncingScrollPhysics(),
+                builder: (BuildContext context, int index) {
+                  return PhotoViewGalleryPageOptions(
+                    imageProvider:
+                        widget.displayImageSources[index].imageProvider,
+                    initialScale: PhotoViewComputedScale.contained * 0.95,
+                    heroAttributes: PhotoViewHeroAttributes(
+                        tag: widget.displayImageSources[index].hashCode),
+                  );
+                },
+                itemCount: widget.displayImageSources.length,
+                loadingBuilder: (context, event) => Center(
+                  child: Container(
+                    width: 20.0,
+                    height: 20.0,
+                    child: CircularProgressIndicator(
+                      value: event == null
+                          ? 0
+                          : event.cumulativeBytesLoaded /
+                              event.expectedTotalBytes,
+                    ),
+                  ),
+                ),
+                backgroundDecoration: const BoxDecoration(
+                  color: primaryColor,
+                ),
+                pageController: pageController,
+              )),
+            ],
+          )),
+    );
+  }
+}