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album: scaling fixes

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This commit is contained in:
Thibault Deckers 2020-03-05 16:10:21 +09:00
parent d46fb09c07
commit 164ac3a144
1 changed files with 3 additions and 3 deletions
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6
lib/widgets/album/collection_scaling.dart
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@ -75,7 +75,7 @@ class _GridScaleGestureDetectorState extends State<GridScaleGestureDetector> {
onScaleUpdate: (details) { onScaleUpdate: (details) {
if (_scaledCountNotifier == null) return; if (_scaledCountNotifier == null) return;
final s = details.scale; final s = details.scale;
_scaledCountNotifier.value = (s <= 1 ? ui.lerpDouble(_start * 2, _start, s) : ui.lerpDouble(_start, _start / 2, s / 6)).clamp(columnCountMin, columnCountMax); _scaledCountNotifier.value = (_start / s).clamp(columnCountMin, columnCountMax);
}, },
onScaleEnd: (details) { onScaleEnd: (details) {
if (_overlayEntry != null) { if (_overlayEntry != null) {
@ -103,7 +103,7 @@ class _GridScaleGestureDetectorState extends State<GridScaleGestureDetector> {
// `Scrollable.ensureVisible` only works on already rendered objects // `Scrollable.ensureVisible` only works on already rendered objects
// `RenderViewport.showOnScreen` can find any `RenderSliver`, but not always a `RenderMetadata` // `RenderViewport.showOnScreen` can find any `RenderSliver`, but not always a `RenderMetadata`
final scrollOffset = viewportClosure.scrollOffsetOf(sliverClosure, (row + 1) * newExtent - gridSize.height / 2); final scrollOffset = viewportClosure.scrollOffsetOf(sliverClosure, (row + 1) * newExtent - gridSize.height / 2);
viewportClosure.offset.jumpTo(scrollOffset.clamp(0, double.infinity)); viewportClosure.offset.jumpTo(scrollOffset.clamp(.0, double.infinity));
}); });
}, },
child: widget.child, child: widget.child,
@ -166,7 +166,7 @@ class _ScaleOverlayState extends State<ScaleOverlay> {
], ],
), ),
), ),
duration: const Duration(milliseconds: 300), duration: const Duration(milliseconds: 200),
child: ValueListenableBuilder( child: ValueListenableBuilder(
valueListenable: widget.scaledCountNotifier, valueListenable: widget.scaledCountNotifier,
builder: (context, columnCount, child) { builder: (context, columnCount, child) {