91 lines
2.8 KiB
Dart
91 lines
2.8 KiB
Dart
import 'package:aves/model/image_collection.dart';
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import 'package:aves/model/image_entry.dart';
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import 'package:aves/widgets/album/collection_section.dart';
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import 'package:draggable_scrollbar/draggable_scrollbar.dart';
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import 'package:flutter/material.dart';
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import 'package:provider/provider.dart';
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class ThumbnailCollection extends AnimatedWidget {
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final ImageCollection collection;
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final Widget appBar;
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const ThumbnailCollection({
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Key key,
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this.collection,
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this.appBar,
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}) : super(key: key, listenable: collection);
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@override
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Widget build(BuildContext context) {
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return ThumbnailCollectionContent(
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collection: collection,
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appBar: appBar,
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);
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}
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}
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class ThumbnailCollectionContent extends StatelessWidget {
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final ImageCollection collection;
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final Widget appBar;
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final Map<dynamic, List<ImageEntry>> _sections;
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final ScrollController _scrollController = ScrollController();
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ThumbnailCollectionContent({
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Key key,
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@required this.collection,
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@required this.appBar,
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}) : _sections = collection.sections,
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super(key: key);
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@override
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Widget build(BuildContext context) {
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final sectionKeys = _sections.keys.toList();
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double topPadding = 0;
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if (appBar != null) {
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final topWidget = appBar;
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if (topWidget is PreferredSizeWidget) {
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topPadding = topWidget.preferredSize.height;
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} else if (topWidget is SliverAppBar) {
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topPadding = kToolbarHeight + (topWidget.bottom?.preferredSize?.height ?? 0.0);
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}
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}
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return SafeArea(
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child: Selector<MediaQueryData, double>(
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selector: (c, mq) => mq.viewInsets.bottom,
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builder: (c, mqViewInsetsBottom, child) => DraggableScrollbar.arrows(
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controller: _scrollController,
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padding: EdgeInsets.only(
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// top padding to adjust scroll thumb
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top: topPadding,
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bottom: mqViewInsetsBottom,
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),
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child: CustomScrollView(
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controller: _scrollController,
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slivers: [
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if (appBar != null) appBar,
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...sectionKeys.map((sectionKey) {
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Widget sliver = SectionSliver(
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// need key to prevent section header mismatch
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// but it should not be unique key, otherwise sections are rebuilt when changing page
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key: ValueKey(sectionKey),
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collection: collection,
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sections: _sections,
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sectionKey: sectionKey,
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);
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if (sectionKey == sectionKeys.last) {
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sliver = SliverPadding(
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padding: EdgeInsets.only(bottom: mqViewInsetsBottom),
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sliver: sliver,
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);
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}
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return sliver;
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}),
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],
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),
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),
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),
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);
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}
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}
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