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Code Issues Releases Activity

feat(mobile): Enhanced vertical swiping motion in image viewer (#932)

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Alex 2022-11-05 22:59:06 -05:00 committed by GitHub
parent bbe820d797
commit c8538cc62f
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1 changed files with 14 additions and 16 deletions
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30
mobile/lib/modules/asset_viewer/ui/remote_photo_view.dart
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@ -9,7 +9,6 @@ class _RemotePhotoViewState extends State<RemotePhotoView> {
_RemoteImageStatus _status = _RemoteImageStatus.empty;
bool _zoomedIn = false;
static const int swipeThreshold = 100;
late CachedNetworkImageProvider fullProvider;
late CachedNetworkImageProvider previewProvider;
late CachedNetworkImageProvider thumbnailProvider;
@ -20,34 +19,33 @@ class _RemotePhotoViewState extends State<RemotePhotoView> {
return IgnorePointer(
ignoring: !allowMoving,
child: PhotoView(
imageProvider: _imageProvider,
minScale: PhotoViewComputedScale.contained,
enablePanAlways: true,
scaleStateChangedCallback: _scaleStateChanged,
onScaleEnd: _onScaleListener,
child: Listener(
onPointerMove: handleSwipUpDown,
child: PhotoView(
imageProvider: _imageProvider,
minScale: PhotoViewComputedScale.contained,
enablePanAlways: false,
scaleStateChangedCallback: _scaleStateChanged,
),
),
);
}
void _onScaleListener(
BuildContext context,
ScaleEndDetails details,
PhotoViewControllerValue controllerValue,
) {
// Disable swipe events when zoomed in
void handleSwipUpDown(PointerMoveEvent details) {
int sensitivity = 10;
if (_zoomedIn) {
return;
}
if (controllerValue.position.dy > swipeThreshold) {
if (details.delta.dy > sensitivity) {
widget.onSwipeDown();
} else if (controllerValue.position.dy < -swipeThreshold) {
} else if (details.delta.dy < -sensitivity) {
widget.onSwipeUp();
}
}
void _scaleStateChanged(PhotoViewScaleState state) {
// _onScaleListener;
_zoomedIn = state != PhotoViewScaleState.initial;
if (_zoomedIn) {
widget.isZoomedListener.value = true;