25 lines
719 B
Dart
25 lines
719 B
Dart
import 'package:flutter/gestures.dart';
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import 'package:flutter/widgets.dart';
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class SloppyScrollPhysics extends ScrollPhysics {
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const SloppyScrollPhysics({
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this.touchSlopFactor = 1,
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ScrollPhysics parent,
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}) : super(parent: parent);
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// in [0, 1]
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// 0: most reactive but will not let other recognizers accept gestures
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// 1: less reactive but gives the most leeway to other recognizers
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final double touchSlopFactor;
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@override
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SloppyScrollPhysics applyTo(ScrollPhysics ancestor) {
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return SloppyScrollPhysics(
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touchSlopFactor: touchSlopFactor,
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parent: buildParent(ancestor),
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);
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}
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@override
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double get dragStartDistanceMotionThreshold => kTouchSlop * touchSlopFactor;
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}
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