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Commit db22e300 authored by Johannes Gallmann's avatar Johannes Gallmann
Browse files

Use STANDARD_DECELERATE interpolator for predictive back to home 

Bug: 325647546
Flag: ACONFIG com.android.systemui.predictive_back_system_animations TEAMFOOD
Test: Manual, i.e. verifying increased responsiveness during first phase of back gesture
Change-Id: Ie31d7fba7ca307c96830e0656887cda89d9bbb1a
parent 51c09ed1

quickstep/src/com/android/quickstep/LauncherBackAnimationController.java

+4 −2
Original line number Diff line number Diff line
@@ -52,6 +52,7 @@ import android.window.BackMotionEvent; 
import android.window.BackProgressAnimator;

import android.window.IOnBackInvokedCallback;



import com.android.app.animation.Interpolators;

import com.android.internal.view.AppearanceRegion;

import com.android.launcher3.AbstractFloatingView;

import com.android.launcher3.BubbleTextView;
@@ -103,7 +104,8 @@ public class LauncherBackAnimationController { 
    private float mWindowScaleEndCornerRadius;

    private float mWindowScaleStartCornerRadius;

    private final Interpolator mCancelInterpolator;

    private final Interpolator mProgressInterpolator = new DecelerateInterpolator();

    private final Interpolator mProgressInterpolator = Interpolators.STANDARD_DECELERATE;

    private final Interpolator mVerticalMoveInterpolator = new DecelerateInterpolator();

    private final PointF mInitialTouchPos = new PointF();



    private RemoteAnimationTarget mBackTarget;
@@ -376,7 +378,7 @@ public class LauncherBackAnimationController { 
        float yDirection = rawYDelta < 0 ? -1 : 1;

        // limit yDelta interpretation to 1/2 of screen height in either direction

        float deltaYRatio = Math.min(screenHeight / 2f, Math.abs(rawYDelta)) / (screenHeight / 2f);

        float interpolatedYRatio = mProgressInterpolator.getInterpolation(deltaYRatio);

        float interpolatedYRatio = mVerticalMoveInterpolator.getInterpolation(deltaYRatio);

        // limit y-shift so surface never passes 8dp screen margin

        float deltaY = yDirection * interpolatedYRatio * Math.max(0f, (screenHeight - height)

                / 2f - mWindowScaleMarginX);