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Code Issues Releases Activity

fix(mobile): scroll thumb is hidden behind the tab navigation bar (#12512)

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* fix(mobile): scroll thumb is hidden behind the tab navigation bar

* better variable names

* fix rounding error
This commit is contained in:
Alex 2024-09-09 14:15:47 -05:00 committed by GitHub
parent b3ef5fe6e7
commit 9323b69c61
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GPG Key ID: B5690EEEBB952194
2 changed files with 23 additions and 17 deletions
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39
mobile/lib/widgets/asset_grid/draggable_scrollbar_custom.dart
View File

@ -59,8 +59,6 @@ class DraggableScrollbar extends StatefulWidget {
final Function(bool scrolling) scrollStateListener;
final double viewPortHeight;
DraggableScrollbar.semicircle({
super.key,
Key? scrollThumbKey,
@ -69,7 +67,6 @@ class DraggableScrollbar extends StatefulWidget {
required this.controller,
required this.itemPositionsListener,
required this.scrollStateListener,
required this.viewPortHeight,
this.heightScrollThumb = 48.0,
this.backgroundColor = Colors.white,
this.padding,
@ -254,7 +251,7 @@ class DraggableScrollbarState extends State<DraggableScrollbar>
}
double get barMaxScrollExtent =>
widget.viewPortHeight -
(context.size?.height ?? 0) -
widget.heightScrollThumb -
(widget.heightOffset ?? 0);
@ -340,8 +337,8 @@ class DraggableScrollbarState extends State<DraggableScrollbar>
_thumbAnimationController.forward();
}
if (itemPos < maxItemCount) {
_currentItem = itemPos;
if (itemPosition < maxItemCount) {
_currentItem = itemPosition;
}
_fadeoutTimer?.cancel();
@ -365,25 +362,35 @@ class DraggableScrollbarState extends State<DraggableScrollbar>
widget.scrollStateListener(true);
}
int get itemPos {
int get itemPosition {
int numberOfItems = widget.child.itemCount;
return ((_barOffset / barMaxScrollExtent) * numberOfItems).toInt();
}
void _jumpToBarPos() {
if (itemPos > maxItemCount - 1) {
void _jumpToBarPosition() {
if (itemPosition > maxItemCount - 1) {
return;
}
_currentItem = itemPos;
_currentItem = itemPosition;
/// If the bar is at the bottom but the item position is still smaller than the max item count (due to rounding error)
/// jump to the end of the list
if (barMaxScrollExtent - _barOffset < 10 && itemPosition < maxItemCount) {
widget.controller.jumpTo(
index: maxItemCount,
);
return;
}
widget.controller.jumpTo(
index: itemPos,
index: itemPosition,
);
}
Timer? dragHaltTimer;
int lastTimerPos = 0;
int lastTimerPosition = 0;
void _onVerticalDragUpdate(DragUpdateDetails details) {
setState(() {
@ -400,8 +407,8 @@ class DraggableScrollbarState extends State<DraggableScrollbar>
_barOffset = barMaxScrollExtent;
}
if (itemPos != lastTimerPos) {
lastTimerPos = itemPos;
if (itemPosition != lastTimerPosition) {
lastTimerPosition = itemPosition;
dragHaltTimer?.cancel();
widget.scrollStateListener(true);
@ -413,7 +420,7 @@ class DraggableScrollbarState extends State<DraggableScrollbar>
);
}
_jumpToBarPos();
_jumpToBarPosition();
}
});
}
@ -426,7 +433,7 @@ class DraggableScrollbarState extends State<DraggableScrollbar>
});
setState(() {
_jumpToBarPos();
_jumpToBarPosition();
_isDragInProcess = false;
});

1
mobile/lib/widgets/asset_grid/immich_asset_grid_view.dart
View File

@ -264,7 +264,6 @@ class ImmichAssetGridViewState extends ConsumerState<ImmichAssetGridView> {
final child = (useDragScrolling && ModalRoute.of(context) != null)
? DraggableScrollbar.semicircle(
viewPortHeight: context.height,
scrollStateListener: dragScrolling,
itemPositionsListener: _itemPositionsListener,
controller: _itemScrollController,