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Commit ccc13daa authored by Johannes Gallmann's avatar Johannes Gallmann
Browse files

Add PredictiveBack easing to Easings.kt 

Bug: 350705972
Test: Presubmit
Flag: EXEMPT code cleanup
Change-Id: I149a3a866b0dfc948459c59cc06c0095afc3eecc
parent 9b348ee2

packages/SystemUI/compose/core/src/com/android/compose/animation/Easings.kt

+12 −0
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ 


package com.android.compose.animation



import androidx.compose.animation.core.CubicBezierEasing

import androidx.compose.animation.core.Easing

import androidx.core.animation.Interpolator

import com.android.app.animation.InterpolatorsAndroidX
@@ -59,6 +60,17 @@ object Easings { 
    /** The linear interpolator. */

    val Linear = fromInterpolator(InterpolatorsAndroidX.LINEAR)



    /**

     * Use this easing for animating progress values coming from the back callback to get the

     * predictive-back-typical decelerate motion.

     *

     * This easing is similar to [StandardDecelerate] but has a slight acceleration phase at the

     * start.

     *

     * See also [InterpolatorsAndroidX.BACK_GESTURE].

     */

    val PredictiveBack = CubicBezierEasing(0.1f, 0.1f, 0f, 1f)



    /** The default legacy interpolator as defined in Material 1. Also known as FAST_OUT_SLOW_IN. */

    val Legacy = fromInterpolator(InterpolatorsAndroidX.LEGACY)

packages/SystemUI/compose/features/src/com/android/systemui/scene/ui/composable/transitions/FromLockscreenToBouncerTransition.kt

+2 −2
Original line number Diff line number Diff line 
package com.android.systemui.scene.ui.composable.transitions



import androidx.compose.animation.core.CubicBezierEasing

import com.android.compose.animation.Easings

import com.android.compose.animation.scene.TransitionBuilder

import com.android.systemui.bouncer.ui.composable.Bouncer
@@ -9,7 +9,7 @@ fun TransitionBuilder.lockscreenToBouncerTransition() { 
}



fun TransitionBuilder.bouncerToLockscreenPreview() {

    fractionRange(easing = CubicBezierEasing(0.1f, 0.1f, 0f, 1f)) {

    fractionRange(easing = Easings.PredictiveBack) {

        scaleDraw(Bouncer.Elements.Content, scaleY = 0.8f, scaleX = 0.8f)

    }

}