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PiinksPiinks
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Revert Ballistic & Clamping simulation updates (#111201)
1 parent dc6ab62 commit 5f2d730

12 files changed

+58
-448
lines changed

‎dev/tools/generate_android_spline_data.dart

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This file was deleted.

‎packages/flutter/lib/src/animation/animation_controller.dart

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Original file line numberDiff line numberDiff line change
@@ -757,15 +757,6 @@ class AnimationController extends Animation<double>
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return result;
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}
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/// Update the simulation without restarting the animation.
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///
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/// The current simulation will be replaced with the provided [Simulation].
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/// It is only valid to call this when an animation is currently underway.
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void updateSimulation(Simulation simulation) {
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assert(isAnimating);
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_simulation = simulation;
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}
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769760
/// Stops running this animation.
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///
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/// This does not trigger any notifications. The animation stops in its

‎packages/flutter/lib/src/widgets/nested_scroll_view.dart

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@@ -686,12 +686,6 @@ class _NestedScrollCoordinator implements ScrollActivityDelegate, ScrollHoldCont
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);
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}
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// TODO(Piinks): https://github.com/flutter/flutter/issues/100748
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@override
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Simulation? updateBallisticAnimation(double initVelocity, double initPosition) {
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return null;
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}
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ScrollActivity createOuterBallisticScrollActivity(double velocity) {
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// This function creates a ballistic scroll for the outer scrollable.
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//
@@ -1367,12 +1361,6 @@ class _NestedScrollPosition extends ScrollPosition implements ScrollActivityDele
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));
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}
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// TODO(Piinks): see https://github.com/flutter/flutter/issues/100748
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@override
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Simulation? updateBallisticAnimation(double initVelocity, double initPosition) {
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return null;
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}
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ScrollActivity createBallisticScrollActivity(
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Simulation? simulation, {
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required _NestedBallisticScrollActivityMode mode,

‎packages/flutter/lib/src/widgets/scroll_activity.dart

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Original file line numberDiff line numberDiff line change
@@ -47,16 +47,6 @@ abstract class ScrollActivityDelegate {
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/// Terminate the current activity and start a ballistic activity with the
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/// given velocity.
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void goBallistic(double velocity);
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/// Update the ballistic animation instead of restarting it, for example as
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/// the result of a layout change after a flinging gesture.
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///
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/// The [initVelocity] and [initPosition] refer to the starting values of the
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/// new ballistic animation.
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///
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/// Can return null if the current [ScrollPhysics.createBallisticSimulation]
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/// returns null, which will trigger an [IdleScrollActivity] instead.
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Simulation? updateBallisticAnimation(double initVelocity, double initPosition);
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}
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/// Base class for scrolling activities like dragging and flinging.
@@ -534,17 +524,13 @@ class DragScrollActivity extends ScrollActivity {
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class BallisticScrollActivity extends ScrollActivity {
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/// Creates an activity that animates a scroll view based on a [simulation].
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///
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/// The [delegate], [simulation], and [vsync] arguments must not be null. The
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/// [initVelocity] and [initPosition] arguments allow the ballistic activity
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/// to update the simulation instead of restarting it.
527+
/// The [delegate], [simulation], and [vsync] arguments must not be null.
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BallisticScrollActivity(
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super.delegate,
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Simulation simulation,
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TickerProvider vsync,
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this.shouldIgnorePointer, {
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double initVelocity = 0.0,
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double initPosition = 0.0,
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}) : _initVelocity = initVelocity, _initPosition = initPosition {
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this.shouldIgnorePointer,
533+
) {
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_controller = AnimationController.unbounded(
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debugLabel: kDebugMode ? objectRuntimeType(this, 'BallisticScrollActivity') : null,
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vsync: vsync,
@@ -556,24 +542,14 @@ class BallisticScrollActivity extends ScrollActivity {
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557543
late AnimationController _controller;
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559-
final double _initVelocity;
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final double _initPosition;
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563545
@override
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void resetActivity() {
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delegate.goBallistic(velocity);
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}
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568550
@override
569551
void applyNewDimensions() {
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final Simulation? newSimulation = delegate.updateBallisticAnimation(
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_initVelocity,
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_initPosition,
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);
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if (newSimulation != null) {
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_controller.updateSimulation(newSimulation);
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}
552+
delegate.goBallistic(velocity);
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}
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579555
void _tick() {

‎packages/flutter/lib/src/widgets/scroll_position_with_single_context.dart

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@@ -12,7 +12,6 @@ import 'basic.dart';
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import 'framework.dart';
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import 'scroll_activity.dart';
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import 'scroll_context.dart';
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import 'scroll_metrics.dart';
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import 'scroll_notification.dart';
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import 'scroll_physics.dart';
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import 'scroll_position.dart';
@@ -147,35 +146,12 @@ class ScrollPositionWithSingleContext extends ScrollPosition implements ScrollAc
147146
simulation,
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context.vsync,
149148
activity?.shouldIgnorePointer ?? true,
150-
initVelocity: velocity,
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initPosition: pixels,
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));
153150
} else {
154151
goIdle();
155152
}
156153
}
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158-
@override
159-
Simulation? updateBallisticAnimation(double initVelocity, double initPosition) {
160-
assert(hasPixels);
161-
final FixedScrollMetrics initScrollMetrics = FixedScrollMetrics(
162-
minScrollExtent: minScrollExtent,
163-
maxScrollExtent: maxScrollExtent,
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pixels: initPosition,
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viewportDimension: viewportDimension,
166-
axisDirection: axisDirection,
167-
);
168-
final Simulation? simulation = physics.createBallisticSimulation(
169-
initScrollMetrics,
170-
initVelocity,
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);
172-
if (simulation == null) {
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goIdle();
174-
return null;
175-
}
176-
return simulation;
177-
}
178-
179155
@override
180156
ScrollDirection get userScrollDirection => _userScrollDirection;
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ScrollDirection _userScrollDirection = ScrollDirection.idle;

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