code improvements.
parent
c70252c613
commit
1e42ba6bd7
@ -1,78 +0,0 @@
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import 'package:flutter/material.dart';
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import 'package:tangheem/widgets/auto_scroll_view/scroll_id.dart';
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class AyaScrollViewer extends StatefulWidget {
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final ScrollToId scrollToId;
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final List<ScrollContent> children;
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final Axis scrollDirection;
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AyaScrollViewer({@required this.children, @required this.scrollToId, this.scrollDirection = Axis.vertical});
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@override
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_InteractiveScrollViewerState createState() => _InteractiveScrollViewerState();
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}
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class _InteractiveScrollViewerState extends State<AyaScrollViewer> {
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List<String> _idList = [];
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@override
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void initState() {
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super.initState();
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setData();
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}
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void setData() {
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widget.scrollToId.scrollDirection = widget.scrollDirection;
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_idList = [];
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widget.scrollToId.scrollContentsList = [];
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for (ScrollContent scrollContents in widget.children) {
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if (_idList.contains(scrollContents.id)) {
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throw Exception('Do not use the same id');
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} else {
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_idList.add(scrollContents.id);
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}
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widget.scrollToId.scrollContentsList.add(ScrollContentWithKey.fromWithout(scrollContents));
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}
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}
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@override
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void didUpdateWidget(covariant AyaScrollViewer oldWidget) {
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if (widget.children != oldWidget.children) {
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setData();
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}
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super.didUpdateWidget(oldWidget);
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}
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@override
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Widget build(BuildContext context) {
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return SingleChildScrollView(
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scrollDirection: widget.scrollDirection,
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controller: widget.scrollToId.scrollController,
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physics: BouncingScrollPhysics(),
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child: buildContent(),
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);
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}
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Widget buildContent() {
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if (widget.scrollDirection == Axis.vertical) {
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return Column(
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children: widget.scrollToId.scrollContentsList.map((scrollContents) {
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return buildRepaintBoundary(scrollContents);
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}).toList(),
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);
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} else {
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return Row(
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children: widget.scrollToId.scrollContentsList.map((scrollContents) {
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return buildRepaintBoundary(scrollContents);
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}).toList(),
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);
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}
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}
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RepaintBoundary buildRepaintBoundary(ScrollContentWithKey scrollContents) {
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return RepaintBoundary(
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key: scrollContents.key,
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child: scrollContents.child,
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);
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}
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}
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@ -1,136 +0,0 @@
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import 'package:flutter/material.dart';
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class ScrollToId {
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final ScrollController scrollController;
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List<ScrollContentWithKey> scrollContentsList = [];
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Axis scrollDirection;
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ScrollToId({this.scrollController});
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String idPosition() {
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double sumSize = 0;
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for (ScrollContentWithKey scrollContents in scrollContentsList) {
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if (scrollDirection == Axis.vertical) {
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sumSize += scrollContents.key.currentContext.size.height;
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} else {
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sumSize += scrollContents.key.currentContext.size.width;
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}
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if (scrollController.offset < sumSize) {
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return scrollContents.id;
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}
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}
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return null;
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}
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Future<void> animateTo(String id, {@required Duration duration, @required Curve curve}) async {
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Function _function = (double offset) {
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scrollController.animateTo(offset, duration: duration, curve: curve);
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};
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_scroll(id: id, scrollFunction: _function);
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}
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Future<void> jumpTo(String id) async {
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Function _function = (double offset) {
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scrollController.jumpTo(offset);
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};
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_scroll(id: id, scrollFunction: _function);
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}
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Future<void> animateToNext({@required Duration duration, @required Curve curve}) async {
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Function _function = (double offset) {
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scrollController.animateTo(offset, duration: duration, curve: curve);
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};
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_scroll(id: _getNextId(number: 1), scrollFunction: _function);
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}
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Future<void> jumpToNext() async {
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Function _function = (double offset) {
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scrollController.jumpTo(offset);
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};
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_scroll(id: _getNextId(number: 1), scrollFunction: _function);
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}
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Future<void> animateToBefore({@required Duration duration, @required Curve curve}) async {
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Function _function = (double offset) {
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scrollController.animateTo(offset, duration: duration, curve: curve);
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};
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_scroll(id: _getNextId(number: -1), scrollFunction: _function);
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}
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Future<void> jumpToBefore() async {
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Function _function = (double offset) {
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scrollController.jumpTo(offset);
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};
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_scroll(id: _getNextId(number: -1), scrollFunction: _function);
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}
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String _getNextId({int number}) {
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double sumSize = 0;
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for (int i = 0; i < scrollContentsList.length; i++) {
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if (scrollDirection == Axis.vertical) {
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sumSize += scrollContentsList[i].key.currentContext.size.height;
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} else {
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sumSize += scrollContentsList[i].key.currentContext.size.width;
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}
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if (scrollController.offset < sumSize) {
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if (number == 1 && i == scrollContentsList.length - 1) return null;
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if (number == -1 && i == 0) return null;
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return scrollContentsList[i + number].id;
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}
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}
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return null;
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}
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void _scroll({String id, Function scrollFunction}) {
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double sumSize = 0;
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for (ScrollContentWithKey scrollContents in scrollContentsList) {
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if (scrollContents.id == id) {
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try {
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if (sumSize < scrollController.position.maxScrollExtent) {
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scrollFunction(sumSize);
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break;
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} else {
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scrollFunction(scrollController.position.maxScrollExtent);
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break;
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}
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} catch (e) {
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print('$e');
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break;
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}
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} else {
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try {
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if (scrollDirection == Axis.vertical) {
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sumSize += scrollContents.key.currentContext.size.height;
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} else {
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sumSize += scrollContents.key.currentContext.size.width;
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}
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} catch (e) {
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print('$e');
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}
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}
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}
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}
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}
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class ScrollContent {
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final String id;
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final Widget child;
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ScrollContent({@required this.id, @required this.child});
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}
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class ScrollContentWithKey {
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final Widget child;
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final String id;
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final GlobalKey key;
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ScrollContentWithKey({this.child, this.key, this.id});
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factory ScrollContentWithKey.fromWithout(ScrollContent scrollContent) {
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return ScrollContentWithKey(child: scrollContent.child, id: scrollContent.id, key: GlobalKey());
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}
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}
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