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Fix weird scrollcontroller state causing detail pane to open wrongly

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This commit is contained in:
Ming Ming 2022-10-16 16:13:56 +08:00
parent 497b75ce53
commit 5ac326b5c8
1 changed files with 13 additions and 3 deletions
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16
app/lib/widget/viewer.dart
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@ -483,13 +483,19 @@ class _ViewerState extends State<Viewer>
/// Called when the page is being built for the first time
void _onCreateNewPage(BuildContext context, int index) {
_pageStates[index] = _PageState(ScrollController(
initialScrollOffset: _isShowDetailPane && !_isClosingDetailPane
? _calcDetailPaneOpenedScrollPosition(index)
: 0));
initialScrollOffset: _isShowDetailPane && !_isClosingDetailPane
? _calcDetailPaneOpenedScrollPosition(index)
: 0,
));
}
/// Called when the page is being built after previously moved out of view
void _onRecreatePageAfterMovedOut(BuildContext context, int index) {
_pageStates[index]!.setScrollController(ScrollController(
initialScrollOffset: _isShowDetailPane && !_isClosingDetailPane
? _calcDetailPaneOpenedScrollPosition(index)
: 0,
));
if (_isShowDetailPane && !_isClosingDetailPane) {
WidgetsBinding.instance.addPostFrameCallback((_) {
if (_pageStates[index]!.itemHeight != null) {
@ -762,6 +768,10 @@ class _ViewerState extends State<Viewer>
class _PageState {
_PageState(this.scrollController);
void setScrollController(ScrollController c) {
scrollController = c;
}
ScrollController scrollController;
double? itemHeight;
bool hasLoaded = false;