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Merge pull request #633 from abarth/fling_sheet_up

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Bottom sheets shouldn't dismiss when flung up
This commit is contained in:
Adam Barth 2015-11-30 14:24:30 -08:00
commit 114135aadb
1 changed files with 6 additions and 4 deletions
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10
packages/flutter/lib/src/material/bottom_sheet.dart
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@ -52,12 +52,14 @@ class BottomSheet extends StatelessComponent {
performance.progress -= delta / (childHeight ?? delta);
}
void _handleDragEnd(Offset velocity, BuildContext context) {
void _handleDragEnd(Offset velocity) {
if (_dismissUnderway)
return;
if (velocity.dy > _kMinFlingVelocity) {
performance.fling(velocity: -velocity.dy / childHeight);
onClosing();
double flingVelocity = -velocity.dy / childHeight;
performance.fling(velocity: flingVelocity);
if (flingVelocity < 0.0)
onClosing();
} else if (performance.progress < _kCloseProgressThreshold) {
performance.fling(velocity: -1.0);
onClosing();
@ -69,7 +71,7 @@ class BottomSheet extends StatelessComponent {
Widget build(BuildContext context) {
return new GestureDetector(
onVerticalDragUpdate: _handleDragUpdate,
onVerticalDragEnd: (Offset velocity) { _handleDragEnd(velocity, context); },
onVerticalDragEnd: _handleDragEnd,
child: new Material(
child: builder(context)
)