new defaultSwipeSpec

This new SwipeSpec uses a springs

Flexiglass: stiffness = 300f, dampingRatio = 0.8f
STL: stiffness = MediumLow (400f), dampingRatio = RatioLowBouncy (0.75f)

Test: Manually tested on Flexiglass
Bug: 345750458
Flag: com.android.systemui.scene_container
Change-Id: I476b02ebbdfbc0ede77ae60ee35203a6384f9217

3 files changed, 7 insertions, 2 deletions

diff --git a/packages/SystemUI/compose/features/src/com/android/systemui/scene/ui/composable/SceneContainerTransitions.kt b/packages/SystemUI/compose/features/src/com/android/systemui/scene/ui/composable/SceneContainerTransitions.kt
index ac58ab5296f6..9d5252e05bbd 100644
--- a/packages/SystemUI/compose/features/src/com/android/systemui/scene/ui/composable/SceneContainerTransitions.kt
+++ b/packages/SystemUI/compose/features/src/com/android/systemui/scene/ui/composable/SceneContainerTransitions.kt
@@ -1,5 +1,6 @@
 package com.android.systemui.scene.ui.composable
 
+import androidx.compose.animation.core.spring
 import androidx.compose.foundation.gestures.Orientation
 import com.android.compose.animation.scene.ProgressConverter
 import com.android.compose.animation.scene.TransitionKey
@@ -44,6 +45,7 @@ val SceneContainerTransitions = transitions {
 
     // Overscroll progress starts linearly with some resistance (3f) and slowly approaches 0.2f
     defaultOverscrollProgressConverter = ProgressConverter.tanh(maxProgress = 0.2f, tilt = 3f)
+    defaultSwipeSpec = spring(stiffness = 300f, dampingRatio = 0.8f, visibilityThreshold = 0.5f)
 
     // Scene transitions
 
diff --git a/packages/SystemUI/compose/scene/src/com/android/compose/animation/scene/SceneTransitions.kt b/packages/SystemUI/compose/scene/src/com/android/compose/animation/scene/SceneTransitions.kt
index b358faf2c418..879dc542552c 100644
--- a/packages/SystemUI/compose/scene/src/com/android/compose/animation/scene/SceneTransitions.kt
+++ b/packages/SystemUI/compose/scene/src/com/android/compose/animation/scene/SceneTransitions.kt
@@ -152,6 +152,7 @@ internal constructor(
         internal val DefaultSwipeSpec =
             spring(
                 stiffness = Spring.StiffnessMediumLow,
+                dampingRatio = Spring.DampingRatioLowBouncy,
                 visibilityThreshold = OffsetVisibilityThreshold,
             )
 
diff --git a/packages/SystemUI/compose/scene/tests/src/com/android/compose/animation/scene/DraggableHandlerTest.kt b/packages/SystemUI/compose/scene/tests/src/com/android/compose/animation/scene/DraggableHandlerTest.kt
index 2c41b35da998..d6935557fe1e 100644
--- a/packages/SystemUI/compose/scene/tests/src/com/android/compose/animation/scene/DraggableHandlerTest.kt
+++ b/packages/SystemUI/compose/scene/tests/src/com/android/compose/animation/scene/DraggableHandlerTest.kt
@@ -1203,7 +1203,8 @@ class DraggableHandlerTest {
     fun overscroll_releaseBetween0And100Percent_up() = runGestureTest {
         // Make scene B overscrollable.
         layoutState.transitions = transitions {
-            from(SceneA, to = SceneB) { spec = spring(dampingRatio = Spring.DampingRatioNoBouncy) }
+            defaultSwipeSpec = spring(dampingRatio = Spring.DampingRatioNoBouncy)
+            from(SceneA, to = SceneB) {}
             overscroll(SceneB, Orientation.Vertical) { fade(TestElements.Foo) }
         }
 
@@ -1234,7 +1235,8 @@ class DraggableHandlerTest {
     fun overscroll_releaseBetween0And100Percent_down() = runGestureTest {
         // Make scene C overscrollable.
         layoutState.transitions = transitions {
-            from(SceneA, to = SceneC) { spec = spring(dampingRatio = Spring.DampingRatioNoBouncy) }
+            defaultSwipeSpec = spring(dampingRatio = Spring.DampingRatioNoBouncy)
+            from(SceneA, to = SceneC) {}
             overscroll(SceneC, Orientation.Vertical) { fade(TestElements.Foo) }
         }