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Commit 86f0765c authored by Omar Miatello's avatar Omar Miatello Committed by Automerger Merge Worker
Browse files

Merge "BackEvent: add generated events for fling gesture" into udc-dev am: 89f8d9ca 

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21510847



Change-Id: I91485a18795d78b3c307f07d293b7d0616dd2c92
Signed-off-by: default avatarAutomerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
parents 3ebbae6f 89f8d9ca

libs/WindowManager/Shell/src/com/android/wm/shell/back/BackAnimationController.java

+97 −2
Original line number Diff line number Diff line
@@ -20,6 +20,9 @@ import static com.android.wm.shell.common.ExecutorUtils.executeRemoteCallWithTas 
import static com.android.wm.shell.protolog.ShellProtoLogGroup.WM_SHELL_BACK_PREVIEW;

import static com.android.wm.shell.sysui.ShellSharedConstants.KEY_EXTRA_SHELL_BACK_ANIMATION;



import android.animation.Animator;

import android.animation.AnimatorListenerAdapter;

import android.animation.ValueAnimator;

import android.annotation.NonNull;

import android.annotation.Nullable;

import android.app.ActivityTaskManager;
@@ -37,7 +40,9 @@ import android.os.SystemClock; 
import android.os.SystemProperties;

import android.os.UserHandle;

import android.provider.Settings.Global;

import android.util.DisplayMetrics;

import android.util.Log;

import android.util.MathUtils;

import android.util.SparseArray;

import android.view.IRemoteAnimationRunner;

import android.view.InputDevice;
@@ -56,6 +61,7 @@ import android.window.IOnBackInvokedCallback; 
import com.android.internal.annotations.VisibleForTesting;

import com.android.internal.protolog.common.ProtoLog;

import com.android.internal.view.AppearanceRegion;

import com.android.wm.shell.animation.FlingAnimationUtils;

import com.android.wm.shell.common.ExternalInterfaceBinder;

import com.android.wm.shell.common.RemoteCallable;

import com.android.wm.shell.common.ShellExecutor;
@@ -80,6 +86,17 @@ public class BackAnimationController implements RemoteCallable<BackAnimationCont 
    public static boolean IS_U_ANIMATION_ENABLED =

            SystemProperties.getInt("persist.wm.debug.predictive_back_anim",

                    SETTING_VALUE_ON) == SETTING_VALUE_ON;



    public static final float FLING_MAX_LENGTH_SECONDS = 0.1f;     // 100ms

    public static final float FLING_SPEED_UP_FACTOR = 0.6f;



    /**

     * The maximum additional progress in case of fling gesture.

     * The end animation starts after the user lifts the finger from the screen, we continue to

     * fire {@link BackEvent}s until the velocity reaches 0.

     */

    private static final float MAX_FLING_PROGRESS = 0.3f; /* 30% of the screen */



    /** Predictive back animation developer option */

    private final AtomicBoolean mEnableAnimations = new AtomicBoolean(false);

    /**
@@ -96,6 +113,7 @@ public class BackAnimationController implements RemoteCallable<BackAnimationCont 
    private boolean mShouldStartOnNextMoveEvent = false;

    /** @see #setTriggerBack(boolean) */

    private boolean mTriggerBack;

    private FlingAnimationUtils mFlingAnimationUtils;



    @Nullable

    private BackNavigationInfo mBackNavigationInfo;
@@ -174,6 +192,11 @@ public class BackAnimationController implements RemoteCallable<BackAnimationCont 
        mBgHandler = bgHandler;

        shellInit.addInitCallback(this::onInit, this);

        mAnimationBackground = backAnimationBackground;

        DisplayMetrics displayMetrics = context.getResources().getDisplayMetrics();

        mFlingAnimationUtils = new FlingAnimationUtils.Builder(displayMetrics)

                .setMaxLengthSeconds(FLING_MAX_LENGTH_SECONDS)

                .setSpeedUpFactor(FLING_SPEED_UP_FACTOR)

                .build();

    }



    @VisibleForTesting
@@ -465,6 +488,78 @@ public class BackAnimationController implements RemoteCallable<BackAnimationCont 
        }

    }





    /**

     * Allows us to manage the fling gesture, it smoothly animates the current progress value to

     * the final position, calculated based on the current velocity.

     *

     * @param callback the callback to be invoked when the animation ends.

     */

    private void dispatchOrAnimateOnBackInvoked(IOnBackInvokedCallback callback) {

        if (callback == null) {

            return;

        }



        boolean animationStarted = false;



        if (mBackNavigationInfo != null && mBackNavigationInfo.isAnimationCallback()) {



            final BackMotionEvent backMotionEvent = mTouchTracker.createProgressEvent();

            if (backMotionEvent != null) {

                // Constraints - absolute values

                float minVelocity = mFlingAnimationUtils.getMinVelocityPxPerSecond();

                float maxVelocity = mFlingAnimationUtils.getHighVelocityPxPerSecond();

                float maxX = mTouchTracker.getMaxX(); // px

                float maxFlingDistance = maxX * MAX_FLING_PROGRESS; // px



                // Current state

                float currentX = backMotionEvent.getTouchX();

                float velocity = MathUtils.constrain(backMotionEvent.getVelocityX(),

                        -maxVelocity, maxVelocity);



                // Target state

                float animationFaction = velocity / maxVelocity; // value between -1 and 1

                float flingDistance = animationFaction * maxFlingDistance; // px

                float endX = MathUtils.constrain(currentX + flingDistance, 0f, maxX);



                if (!Float.isNaN(endX)

                        && currentX != endX

                        && Math.abs(velocity) >= minVelocity) {

                    ValueAnimator animator = ValueAnimator.ofFloat(currentX, endX);



                    mFlingAnimationUtils.apply(

                            /* animator = */ animator,

                            /* currValue = */ currentX,

                            /* endValue = */ endX,

                            /* velocity = */ velocity,

                            /* maxDistance = */ maxFlingDistance

                    );



                    animator.addUpdateListener(animation -> {

                        Float animatedValue = (Float) animation.getAnimatedValue();

                        float progress = mTouchTracker.getProgress(animatedValue);

                        final BackMotionEvent backEvent = mTouchTracker

                                .createProgressEvent(progress);

                        dispatchOnBackProgressed(mActiveCallback, backEvent);

                    });



                    animator.addListener(new AnimatorListenerAdapter() {

                        @Override

                        public void onAnimationEnd(Animator animation) {

                            dispatchOnBackInvoked(callback);

                        }

                    });

                    animator.start();

                    animationStarted = true;

                }

            }

        }



        if (!animationStarted) {

            dispatchOnBackInvoked(callback);

        }

    }



    private void dispatchOnBackInvoked(IOnBackInvokedCallback callback) {

        if (callback == null) {

            return;
@@ -530,7 +625,7 @@ public class BackAnimationController implements RemoteCallable<BackAnimationCont 
        if (mBackNavigationInfo != null) {

            final IOnBackInvokedCallback callback = mBackNavigationInfo.getOnBackInvokedCallback();

            if (mTriggerBack) {

                dispatchOnBackInvoked(callback);

                dispatchOrAnimateOnBackInvoked(callback);

            } else {

                dispatchOnBackCancelled(callback);

            }
@@ -605,7 +700,7 @@ public class BackAnimationController implements RemoteCallable<BackAnimationCont 


        // The next callback should be {@link #onBackAnimationFinished}.

        if (mTriggerBack) {

            dispatchOnBackInvoked(mActiveCallback);

            dispatchOrAnimateOnBackInvoked(mActiveCallback);

        } else {

            dispatchOnBackCancelled(mActiveCallback);

        }

libs/WindowManager/Shell/src/com/android/wm/shell/back/TouchTracker.java

+32 −15
Original line number Diff line number Diff line
@@ -16,7 +16,10 @@ 


package com.android.wm.shell.back;



import android.annotation.FloatRange;

import android.os.SystemProperties;

import android.util.MathUtils;

import android.view.MotionEvent;

import android.view.RemoteAnimationTarget;

import android.window.BackEvent;

import android.window.BackMotionEvent;
@@ -99,26 +102,40 @@ class TouchTracker { 
    }



    BackMotionEvent createProgressEvent() {

        float progressThreshold = PROGRESS_THRESHOLD >= 0

                ? PROGRESS_THRESHOLD : mProgressThreshold;

        progressThreshold = progressThreshold == 0 ? 1 : progressThreshold;

        float progress = 0;

        // Progress is always 0 when back is cancelled and not restarted.

        if (!mCancelled) {

            progress = getProgress(mLatestTouchX);

        }

        return createProgressEvent(progress);

    }



    /**

     * Progress value computed from the touch position.

     *

     * @param touchX the X touch position of the {@link MotionEvent}.

     * @return progress value

     */

    @FloatRange(from = 0.0, to = 1.0)

    float getProgress(float touchX) {

        // If back is committed, progress is the distance between the last and first touch

        // point, divided by the max drag distance. Otherwise, it's the distance between

        // the last touch point and the starting threshold, divided by max drag distance.

        // The starting threshold is initially the first touch location, and updated to

        // the location everytime back is restarted after being cancelled.

        float startX = mTriggerBack ? mInitTouchX : mStartThresholdX;

            float deltaX = Math.max(

                    mSwipeEdge == BackEvent.EDGE_LEFT

                            ? mLatestTouchX - startX

                            : startX - mLatestTouchX,

                    0);

            progress = Math.min(Math.max(deltaX / progressThreshold, 0), 1);

        float deltaX = Math.abs(startX - touchX);

        float maxX = getMaxX();

        maxX = maxX == 0 ? 1 : maxX;

        return MathUtils.constrain(deltaX / maxX, 0, 1);

    }

        return createProgressEvent(progress);



    /**

     * Maximum X value (in pixels).

     * Progress is considered to be completed (1f) when this limit is exceeded.

     */

    float getMaxX() {

        return PROGRESS_THRESHOLD >= 0 ? PROGRESS_THRESHOLD : mProgressThreshold;

    }



    BackMotionEvent createProgressEvent(float progress) {

libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/back/BackAnimationControllerTest.java

+55 −10
Original line number Diff line number Diff line
@@ -135,12 +135,15 @@ public class BackAnimationControllerTest extends ShellTestCase { 
        mShellExecutor.flushAll();

    }



    private void createNavigationInfo(int backType, boolean enableAnimation) {

    private void createNavigationInfo(int backType,

            boolean enableAnimation,

            boolean isAnimationCallback) {

        BackNavigationInfo.Builder builder = new BackNavigationInfo.Builder()

                .setType(backType)

                .setOnBackNavigationDone(new RemoteCallback((bundle) -> {}))

                .setOnBackInvokedCallback(mAppCallback)

                .setPrepareRemoteAnimation(enableAnimation);

                .setPrepareRemoteAnimation(enableAnimation)

                .setAnimationCallback(isAnimationCallback);



        createNavigationInfo(builder);

    }
@@ -218,7 +221,9 @@ public class BackAnimationControllerTest extends ShellTestCase { 
    @Test

    public void backToHome_dispatchesEvents() throws RemoteException {

        registerAnimation(BackNavigationInfo.TYPE_RETURN_TO_HOME);

        createNavigationInfo(BackNavigationInfo.TYPE_RETURN_TO_HOME, true);

        createNavigationInfo(BackNavigationInfo.TYPE_RETURN_TO_HOME,

                /* enableAnimation = */ true,

                /* isAnimationCallback = */ false);



        doMotionEvent(MotionEvent.ACTION_DOWN, 0);
@@ -239,6 +244,32 @@ public class BackAnimationControllerTest extends ShellTestCase { 
        verify(mAnimatorCallback).onBackInvoked();

    }



    @Test

    public void backToHomeWithAnimationCallback_dispatchesEvents() throws RemoteException {

        registerAnimation(BackNavigationInfo.TYPE_RETURN_TO_HOME);

        createNavigationInfo(BackNavigationInfo.TYPE_RETURN_TO_HOME,

                /* enableAnimation = */ true,

                /* isAnimationCallback = */ true);



        doMotionEvent(MotionEvent.ACTION_DOWN, 0);



        // Check that back start and progress is dispatched when first move.

        doMotionEvent(MotionEvent.ACTION_MOVE, 100, 3000);



        simulateRemoteAnimationStart(BackNavigationInfo.TYPE_RETURN_TO_HOME);



        verify(mAnimatorCallback).onBackStarted(any(BackMotionEvent.class));

        verify(mBackAnimationRunner).onAnimationStart(anyInt(), any(), any(), any(), any());

        ArgumentCaptor<BackMotionEvent> backEventCaptor =

                ArgumentCaptor.forClass(BackMotionEvent.class);

        verify(mAnimatorCallback, atLeastOnce()).onBackProgressed(backEventCaptor.capture());



        // Check that back invocation is dispatched.

        mController.setTriggerBack(true);   // Fake trigger back

        doMotionEvent(MotionEvent.ACTION_UP, 0);

        verify(mAnimatorCallback).onBackInvoked();

    }



    @Test

    public void animationDisabledFromSettings() throws RemoteException {

        // Toggle the setting off
@@ -254,7 +285,9 @@ public class BackAnimationControllerTest extends ShellTestCase { 
        ArgumentCaptor<BackMotionEvent> backEventCaptor =

                ArgumentCaptor.forClass(BackMotionEvent.class);



        createNavigationInfo(BackNavigationInfo.TYPE_RETURN_TO_HOME, false);

        createNavigationInfo(BackNavigationInfo.TYPE_RETURN_TO_HOME,

                /* enableAnimation = */ false,

                /* isAnimationCallback = */ false);



        triggerBackGesture();

        releaseBackGesture();
@@ -271,7 +304,9 @@ public class BackAnimationControllerTest extends ShellTestCase { 
    @Test

    public void ignoresGesture_transitionInProgress() throws RemoteException {

        registerAnimation(BackNavigationInfo.TYPE_RETURN_TO_HOME);

        createNavigationInfo(BackNavigationInfo.TYPE_RETURN_TO_HOME, true);

        createNavigationInfo(BackNavigationInfo.TYPE_RETURN_TO_HOME,

                /* enableAnimation = */ true,

                /* isAnimationCallback = */ false);



        triggerBackGesture();

        simulateRemoteAnimationStart(BackNavigationInfo.TYPE_RETURN_TO_HOME);
@@ -309,7 +344,9 @@ public class BackAnimationControllerTest extends ShellTestCase { 
    @Test

    public void acceptsGesture_transitionTimeout() throws RemoteException {

        registerAnimation(BackNavigationInfo.TYPE_RETURN_TO_HOME);

        createNavigationInfo(BackNavigationInfo.TYPE_RETURN_TO_HOME, true);

        createNavigationInfo(BackNavigationInfo.TYPE_RETURN_TO_HOME,

                /* enableAnimation = */ true,

                /* isAnimationCallback = */ false);



        // In case it is still running in animation.

        doNothing().when(mAnimatorCallback).onBackInvoked();
@@ -334,7 +371,9 @@ public class BackAnimationControllerTest extends ShellTestCase { 
    public void cancelBackInvokeWhenLostFocus() throws RemoteException {

        registerAnimation(BackNavigationInfo.TYPE_RETURN_TO_HOME);



        createNavigationInfo(BackNavigationInfo.TYPE_RETURN_TO_HOME, true);

        createNavigationInfo(BackNavigationInfo.TYPE_RETURN_TO_HOME,

                /* enableAnimation = */ true,

                /* isAnimationCallback = */ false);



        doMotionEvent(MotionEvent.ACTION_DOWN, 0);

        // Check that back start and progress is dispatched when first move.
@@ -454,7 +493,9 @@ public class BackAnimationControllerTest extends ShellTestCase { 


        mController.registerAnimation(type, animationRunner);



        createNavigationInfo(type, true);

        createNavigationInfo(type,

                /* enableAnimation = */ true,

                /* isAnimationCallback = */ false);



        doMotionEvent(MotionEvent.ACTION_DOWN, 0);
@@ -473,11 +514,15 @@ public class BackAnimationControllerTest extends ShellTestCase { 
    }



    private void doMotionEvent(int actionDown, int coordinate) {

        doMotionEvent(actionDown, coordinate, 0);

    }



    private void doMotionEvent(int actionDown, int coordinate, float velocity) {

        mController.onMotionEvent(

                /* touchX */ coordinate,

                /* touchY */ coordinate,

                /* velocityX = */ 0,

                /* velocityY = */ 0,

                /* velocityX = */ velocity,

                /* velocityY = */ velocity,

                /* keyAction */ actionDown,

                /* swipeEdge */ BackEvent.EDGE_LEFT);

    }