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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.quickstep;
import static com.android.launcher3.BaseActivity.INVISIBLE_BY_STATE_HANDLER;
import static com.android.launcher3.BaseActivity.STATE_HANDLER_INVISIBILITY_FLAGS;
import static com.android.launcher3.anim.Interpolators.DEACCEL;
import static com.android.launcher3.anim.Interpolators.LINEAR;
import static com.android.launcher3.anim.Interpolators.OVERSHOOT_1_2;
import static com.android.launcher3.config.FeatureFlags.ENABLE_QUICKSTEP_LIVE_TILE;
import static com.android.launcher3.config.FeatureFlags.QUICKSTEP_SPRINGS;
import static com.android.launcher3.util.DefaultDisplay.getSingleFrameMs;
import static com.android.launcher3.util.RaceConditionTracker.ENTER;
import static com.android.launcher3.util.RaceConditionTracker.EXIT;
import static com.android.launcher3.util.SystemUiController.UI_STATE_OVERVIEW;
import static com.android.quickstep.ActivityControlHelper.AnimationFactory.ShelfAnimState.HIDE;
import static com.android.quickstep.ActivityControlHelper.AnimationFactory.ShelfAnimState.PEEK;
import static com.android.quickstep.MultiStateCallback.DEBUG_STATES;
import static com.android.quickstep.TouchInteractionService.TOUCH_INTERACTION_LOG;
import static com.android.quickstep.WindowTransformSwipeHandler.GestureEndTarget.HOME;
import static com.android.quickstep.WindowTransformSwipeHandler.GestureEndTarget.LAST_TASK;
import static com.android.quickstep.WindowTransformSwipeHandler.GestureEndTarget.NEW_TASK;
import static com.android.quickstep.WindowTransformSwipeHandler.GestureEndTarget.RECENTS;
import static com.android.quickstep.views.RecentsView.UPDATE_SYSUI_FLAGS_THRESHOLD;
import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_OVERVIEW_DISABLED;
import android.animation.Animator;
import android.animation.AnimatorSet;
import android.animation.TimeInterpolator;
import android.animation.ValueAnimator;
import android.annotation.TargetApi;
import android.app.ActivityManager.RunningTaskInfo;
import android.content.Context;
import android.content.Intent;
import android.graphics.Canvas;
import android.graphics.PointF;
import android.graphics.RectF;
import android.os.Build;
import android.os.SystemClock;
import android.view.View;
import android.view.View.OnApplyWindowInsetsListener;
import android.view.ViewTreeObserver.OnDrawListener;
import android.view.WindowInsets;
import android.view.animation.Interpolator;
import androidx.annotation.NonNull;
import androidx.annotation.UiThread;
import com.android.launcher3.AbstractFloatingView;
import com.android.launcher3.BaseDraggingActivity;
import com.android.launcher3.DeviceProfile;
import com.android.launcher3.R;
import com.android.launcher3.Utilities;
import com.android.launcher3.anim.AnimationSuccessListener;
import com.android.launcher3.anim.AnimatorPlaybackController;
import com.android.launcher3.anim.Interpolators;
import com.android.launcher3.logging.UserEventDispatcher;
import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Direction;
import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Touch;
import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
import com.android.launcher3.util.RaceConditionTracker;
import com.android.launcher3.util.TraceHelper;
import com.android.quickstep.ActivityControlHelper.AnimationFactory;
import com.android.quickstep.ActivityControlHelper.AnimationFactory.ShelfAnimState;
import com.android.quickstep.ActivityControlHelper.HomeAnimationFactory;
import com.android.quickstep.SysUINavigationMode.Mode;
import com.android.quickstep.inputconsumers.InputConsumer;
import com.android.quickstep.inputconsumers.OverviewInputConsumer;
import com.android.quickstep.util.ClipAnimationHelper.TargetAlphaProvider;
import com.android.quickstep.util.RectFSpringAnim;
import com.android.quickstep.util.SwipeAnimationTargetSet;
import com.android.quickstep.views.LiveTileOverlay;
import com.android.quickstep.views.RecentsView;
import com.android.quickstep.views.TaskView;
import com.android.systemui.shared.recents.model.ThumbnailData;
import com.android.systemui.shared.system.InputConsumerController;
import com.android.systemui.shared.system.LatencyTrackerCompat;
import com.android.systemui.shared.system.RemoteAnimationTargetCompat;
import com.android.systemui.shared.system.WindowCallbacksCompat;
@TargetApi(Build.VERSION_CODES.O)
public class WindowTransformSwipeHandler<T extends BaseDraggingActivity>
extends BaseSwipeUpHandler<T, RecentsView>
implements OnApplyWindowInsetsListener {
private static final String TAG = WindowTransformSwipeHandler.class.getSimpleName();
private static final String[] STATE_NAMES = DEBUG_STATES ? new String[16] : null;
private static int getFlagForIndex(int index, String name) {
if (DEBUG_STATES) {
STATE_NAMES[index] = name;
}
return 1 << index;
}
// Launcher UI related states
private static final int STATE_LAUNCHER_PRESENT = getFlagForIndex(0, "STATE_LAUNCHER_PRESENT");
private static final int STATE_LAUNCHER_STARTED = getFlagForIndex(1, "STATE_LAUNCHER_STARTED");
private static final int STATE_LAUNCHER_DRAWN = getFlagForIndex(2, "STATE_LAUNCHER_DRAWN");
// Internal initialization states
private static final int STATE_APP_CONTROLLER_RECEIVED =
getFlagForIndex(3, "STATE_APP_CONTROLLER_RECEIVED");
// Interaction finish states
private static final int STATE_SCALED_CONTROLLER_HOME =
getFlagForIndex(4, "STATE_SCALED_CONTROLLER_HOME");
private static final int STATE_SCALED_CONTROLLER_RECENTS =
getFlagForIndex(5, "STATE_SCALED_CONTROLLER_RECENTS");
private static final int STATE_HANDLER_INVALIDATED =
getFlagForIndex(6, "STATE_HANDLER_INVALIDATED");
private static final int STATE_GESTURE_STARTED =
getFlagForIndex(7, "STATE_GESTURE_STARTED");
private static final int STATE_GESTURE_CANCELLED =
getFlagForIndex(8, "STATE_GESTURE_CANCELLED");
private static final int STATE_GESTURE_COMPLETED =
getFlagForIndex(9, "STATE_GESTURE_COMPLETED");
private static final int STATE_CAPTURE_SCREENSHOT =
getFlagForIndex(10, "STATE_CAPTURE_SCREENSHOT");
private static final int STATE_SCREENSHOT_CAPTURED =
getFlagForIndex(11, "STATE_SCREENSHOT_CAPTURED");
private static final int STATE_SCREENSHOT_VIEW_SHOWN =
getFlagForIndex(12, "STATE_SCREENSHOT_VIEW_SHOWN");
private static final int STATE_RESUME_LAST_TASK =
getFlagForIndex(13, "STATE_RESUME_LAST_TASK");
private static final int STATE_START_NEW_TASK =
getFlagForIndex(14, "STATE_START_NEW_TASK");
private static final int STATE_CURRENT_TASK_FINISHED =
getFlagForIndex(15, "STATE_CURRENT_TASK_FINISHED");
private static final int LAUNCHER_UI_STATES =
STATE_LAUNCHER_PRESENT | STATE_LAUNCHER_DRAWN | STATE_LAUNCHER_STARTED;
public enum GestureEndTarget {
HOME(1, STATE_SCALED_CONTROLLER_HOME | STATE_CAPTURE_SCREENSHOT, true, false,
ContainerType.WORKSPACE, false),
RECENTS(1, STATE_SCALED_CONTROLLER_RECENTS | STATE_CAPTURE_SCREENSHOT
| STATE_SCREENSHOT_VIEW_SHOWN, true, false, ContainerType.TASKSWITCHER, true),
NEW_TASK(0, STATE_START_NEW_TASK | STATE_CAPTURE_SCREENSHOT, false, true,
ContainerType.APP, true),
LAST_TASK(0, STATE_RESUME_LAST_TASK, false, true, ContainerType.APP, false);
GestureEndTarget(float endShift, int endState, boolean isLauncher, boolean canBeContinued,
int containerType, boolean recentsAttachedToAppWindow) {
this.endShift = endShift;
this.endState = endState;
this.isLauncher = isLauncher;
this.canBeContinued = canBeContinued;
this.containerType = containerType;
this.recentsAttachedToAppWindow = recentsAttachedToAppWindow;
}
/** 0 is app, 1 is overview */
public final float endShift;
/** The state to apply when we reach this final target */
public final int endState;
/** Whether the target is in the launcher activity */
public final boolean isLauncher;
/** Whether the user can start a new gesture while this one is finishing */
public final boolean canBeContinued;
/** Used to log where the user ended up after the gesture ends */
public final int containerType;
/** Whether RecentsView should be attached to the window as we animate to this target */
public final boolean recentsAttachedToAppWindow;
}
public static final long MAX_SWIPE_DURATION = 350;
public static final long MIN_SWIPE_DURATION = 80;
public static final long MIN_OVERSHOOT_DURATION = 120;
public static final float MIN_PROGRESS_FOR_OVERVIEW = 0.7f;
private static final float SWIPE_DURATION_MULTIPLIER =
Math.min(1 / MIN_PROGRESS_FOR_OVERVIEW, 1 / (1 - MIN_PROGRESS_FOR_OVERVIEW));
private static final String SCREENSHOT_CAPTURED_EVT = "ScreenshotCaptured";
private static final long SHELF_ANIM_DURATION = 240;
public static final long RECENTS_ATTACH_DURATION = 300;
/**
* Used as the page index for logging when we return to the last task at the end of the gesture.
*/
private static final int LOG_NO_OP_PAGE_INDEX = -1;
private GestureEndTarget mGestureEndTarget;
// Either RectFSpringAnim (if animating home) or ObjectAnimator (from mCurrentShift) otherwise
private RunningWindowAnim mRunningWindowAnim;
private boolean mIsShelfPeeking;
private boolean mContinuingLastGesture;
// To avoid UI jump when gesture is started, we offset the animation by the threshold.
private float mShiftAtGestureStart = 0;
private ThumbnailData mTaskSnapshot;
// Used to control launcher components throughout the swipe gesture.
private AnimatorPlaybackController mLauncherTransitionController;
private boolean mHasLauncherTransitionControllerStarted;
private AnimationFactory mAnimationFactory = (t) -> { };
private LiveTileOverlay mLiveTileOverlay = new LiveTileOverlay();
private boolean mLiveTileOverlayAttached = false;
private boolean mWasLauncherAlreadyVisible;
private boolean mPassedOverviewThreshold;
private boolean mGestureStarted;
private int mLogAction = Touch.SWIPE;
private int mLogDirection = Direction.UP;
private PointF mDownPos;
private boolean mIsLikelyToStartNewTask;
private final long mTouchTimeMs;
private long mLauncherFrameDrawnTime;
public WindowTransformSwipeHandler(RunningTaskInfo runningTaskInfo, Context context,
long touchTimeMs, OverviewComponentObserver overviewComponentObserver,
boolean continuingLastGesture,
InputConsumerController inputConsumer, RecentsModel recentsModel) {
super(context, overviewComponentObserver, recentsModel, inputConsumer, runningTaskInfo.id);
mTouchTimeMs = touchTimeMs;
mContinuingLastGesture = continuingLastGesture;
initStateCallbacks();
}
private void initStateCallbacks() {
mStateCallback = new MultiStateCallback(STATE_NAMES);
mStateCallback.addCallback(STATE_LAUNCHER_PRESENT | STATE_GESTURE_STARTED,
this::onLauncherPresentAndGestureStarted);
mStateCallback.addCallback(STATE_LAUNCHER_DRAWN | STATE_GESTURE_STARTED,
this::initializeLauncherAnimationController);
mStateCallback.addCallback(STATE_LAUNCHER_PRESENT | STATE_LAUNCHER_DRAWN,
this::launcherFrameDrawn);
mStateCallback.addCallback(STATE_LAUNCHER_PRESENT | STATE_LAUNCHER_STARTED
| STATE_GESTURE_CANCELLED,
this::resetStateForAnimationCancel);
mStateCallback.addCallback(STATE_LAUNCHER_STARTED | STATE_APP_CONTROLLER_RECEIVED,
this::sendRemoteAnimationsToAnimationFactory);
mStateCallback.addCallback(STATE_RESUME_LAST_TASK | STATE_APP_CONTROLLER_RECEIVED,
this::resumeLastTask);
mStateCallback.addCallback(STATE_START_NEW_TASK | STATE_SCREENSHOT_CAPTURED,
this::startNewTask);
mStateCallback.addCallback(STATE_LAUNCHER_PRESENT | STATE_APP_CONTROLLER_RECEIVED
| STATE_LAUNCHER_DRAWN | STATE_CAPTURE_SCREENSHOT,
this::switchToScreenshot);
mStateCallback.addCallback(STATE_SCREENSHOT_CAPTURED | STATE_GESTURE_COMPLETED
| STATE_SCALED_CONTROLLER_RECENTS,
this::finishCurrentTransitionToRecents);
mStateCallback.addCallback(STATE_SCREENSHOT_CAPTURED | STATE_GESTURE_COMPLETED
| STATE_SCALED_CONTROLLER_HOME,
this::finishCurrentTransitionToHome);
mStateCallback.addCallback(STATE_SCALED_CONTROLLER_HOME | STATE_CURRENT_TASK_FINISHED,
this::reset);
mStateCallback.addCallback(STATE_LAUNCHER_PRESENT | STATE_APP_CONTROLLER_RECEIVED
| STATE_LAUNCHER_DRAWN | STATE_SCALED_CONTROLLER_RECENTS
| STATE_CURRENT_TASK_FINISHED | STATE_GESTURE_COMPLETED
| STATE_GESTURE_STARTED,
this::setupLauncherUiAfterSwipeUpToRecentsAnimation);
mStateCallback.addCallback(STATE_HANDLER_INVALIDATED, this::invalidateHandler);
mStateCallback.addCallback(STATE_LAUNCHER_PRESENT | STATE_HANDLER_INVALIDATED,
this::invalidateHandlerWithLauncher);
mStateCallback.addCallback(STATE_HANDLER_INVALIDATED | STATE_RESUME_LAST_TASK,
this::notifyTransitionCancelled);
mStateCallback.addCallback(STATE_APP_CONTROLLER_RECEIVED | STATE_GESTURE_STARTED,
mRecentsAnimationWrapper::enableInputConsumer);
if (!ENABLE_QUICKSTEP_LIVE_TILE.get()) {
mStateCallback.addChangeHandler(STATE_APP_CONTROLLER_RECEIVED | STATE_LAUNCHER_PRESENT
| STATE_SCREENSHOT_VIEW_SHOWN | STATE_CAPTURE_SCREENSHOT,
(b) -> mRecentsView.setRunningTaskHidden(!b));
}
}
@Override
protected boolean onActivityInit(final T activity, Boolean alreadyOnHome) {
if (mActivity == activity) {
return true;
}
if (mActivity != null) {
// The launcher may have been recreated as a result of device rotation.
int oldState = mStateCallback.getState() & ~LAUNCHER_UI_STATES;
initStateCallbacks();
mStateCallback.setState(oldState);
}
mWasLauncherAlreadyVisible = alreadyOnHome;
mActivity = activity;
// Override the visibility of the activity until the gesture actually starts and we swipe
// up, or until we transition home and the home animation is composed
if (alreadyOnHome) {
mActivity.clearForceInvisibleFlag(STATE_HANDLER_INVISIBILITY_FLAGS);
} else {
mActivity.addForceInvisibleFlag(STATE_HANDLER_INVISIBILITY_FLAGS);
}
mRecentsView = activity.getOverviewPanel();
linkRecentsViewScroll();
addLiveTileOverlay();
mStateCallback.setState(STATE_LAUNCHER_PRESENT);
if (alreadyOnHome) {
onLauncherStart(activity);
} else {
activity.setOnStartCallback(this::onLauncherStart);
}
setupRecentsViewUi();
return true;
}
@Override
protected boolean moveWindowWithRecentsScroll() {
return mGestureEndTarget != HOME;
}
private void onLauncherStart(final T activity) {
if (mActivity != activity) {
return;
}
if (mStateCallback.hasStates(STATE_HANDLER_INVALIDATED)) {
return;
}
// If we've already ended the gesture and are going home, don't prepare recents UI,
// as that will set the state as BACKGROUND_APP, overriding the animation to NORMAL.
if (mGestureEndTarget != HOME) {
Runnable initAnimFactory = () -> {
mAnimationFactory = mActivityControlHelper.prepareRecentsUI(mActivity,
mWasLauncherAlreadyVisible, true,
this::onAnimatorPlaybackControllerCreated);
maybeUpdateRecentsAttachedState(false /* animate */);
};
if (mWasLauncherAlreadyVisible) {
// Launcher is visible, but might be about to stop. Thus, if we prepare recents
// now, it might get overridden by moveToRestState() in onStop(). To avoid this,
// wait until the next gesture (and possibly launcher) starts.
mStateCallback.addCallback(STATE_GESTURE_STARTED, initAnimFactory);
} else {
initAnimFactory.run();
}
}
AbstractFloatingView.closeAllOpenViewsExcept(activity, mWasLauncherAlreadyVisible,
AbstractFloatingView.TYPE_LISTENER);
if (mWasLauncherAlreadyVisible) {
mStateCallback.setState(STATE_LAUNCHER_DRAWN);
} else {
TraceHelper.beginSection("WTS-init");
View dragLayer = activity.getDragLayer();
dragLayer.getViewTreeObserver().addOnDrawListener(new OnDrawListener() {
@Override
public void onDraw() {
TraceHelper.endSection("WTS-init", "Launcher frame is drawn");
dragLayer.post(() ->
dragLayer.getViewTreeObserver().removeOnDrawListener(this));
if (activity != mActivity) {
return;
}
mStateCallback.setState(STATE_LAUNCHER_DRAWN);
}
});
}
activity.getRootView().setOnApplyWindowInsetsListener(this);
mStateCallback.setState(STATE_LAUNCHER_STARTED);
}
private void onLauncherPresentAndGestureStarted() {
// Re-setup the recents UI when gesture starts, as the state could have been changed during
// that time by a previous window transition.
setupRecentsViewUi();
notifyGestureStartedAsync();
}
private void setupRecentsViewUi() {
if (mContinuingLastGesture) {
updateSysUiFlags(mCurrentShift.value);
return;
}
mRecentsView.onGestureAnimationStart(mRunningTaskId);
}
private void launcherFrameDrawn() {
mLauncherFrameDrawnTime = SystemClock.uptimeMillis();
}
private void sendRemoteAnimationsToAnimationFactory() {
mAnimationFactory.onRemoteAnimationReceived(mRecentsAnimationWrapper.targetSet);
}
private void initializeLauncherAnimationController() {
buildAnimationController();
if (LatencyTrackerCompat.isEnabled(mContext)) {
LatencyTrackerCompat.logToggleRecents((int) (mLauncherFrameDrawnTime - mTouchTimeMs));
}
// This method is only called when STATE_GESTURE_STARTED is set, so we can enable the
// high-res thumbnail loader here once we are sure that we will end up in an overview state
RecentsModel.INSTANCE.get(mContext).getThumbnailCache()
.getHighResLoadingState().setVisible(true);
}
private float getTaskCurveScaleForOffsetX(float offsetX, float taskWidth) {
float distanceToReachEdge = mDp.widthPx / 2 + taskWidth / 2 +
mContext.getResources().getDimensionPixelSize(R.dimen.recents_page_spacing);
float interpolation = Math.min(1, offsetX / distanceToReachEdge);
return TaskView.getCurveScaleForInterpolation(interpolation);
}
@Override
public void onMotionPauseChanged(boolean isPaused) {
setShelfState(isPaused ? PEEK : HIDE, OVERSHOOT_1_2, SHELF_ANIM_DURATION);
}
public void maybeUpdateRecentsAttachedState() {
maybeUpdateRecentsAttachedState(true /* animate */);
}
/**
* Determines whether to show or hide RecentsView. The window is always
* synchronized with its corresponding TaskView in RecentsView, so if
* RecentsView is shown, it will appear to be attached to the window.
*
* Note this method has no effect unless the navigation mode is NO_BUTTON.
*/
private void maybeUpdateRecentsAttachedState(boolean animate) {
if (mMode != Mode.NO_BUTTON || mRecentsView == null) {
return;
}
RemoteAnimationTargetCompat runningTaskTarget = mRecentsAnimationWrapper.targetSet == null
? null
: mRecentsAnimationWrapper.targetSet.findTask(mRunningTaskId);
final boolean recentsAttachedToAppWindow;
int runningTaskIndex = mRecentsView.getRunningTaskIndex();
if (mGestureEndTarget != null) {
recentsAttachedToAppWindow = mGestureEndTarget.recentsAttachedToAppWindow;
} else if (mContinuingLastGesture
&& mRecentsView.getRunningTaskIndex() != mRecentsView.getNextPage()) {
recentsAttachedToAppWindow = true;
animate = false;
} else if (runningTaskTarget != null && isNotInRecents(runningTaskTarget)) {
// The window is going away so make sure recents is always visible in this case.
recentsAttachedToAppWindow = true;
animate = false;
} else {
recentsAttachedToAppWindow = mIsShelfPeeking || mIsLikelyToStartNewTask;
if (animate) {
// Only animate if an adjacent task view is visible on screen.
TaskView adjacentTask1 = mRecentsView.getTaskViewAt(runningTaskIndex + 1);
TaskView adjacentTask2 = mRecentsView.getTaskViewAt(runningTaskIndex - 1);
float prevTranslationX = mRecentsView.getTranslationX();
mRecentsView.setTranslationX(0);
animate = (adjacentTask1 != null && adjacentTask1.getGlobalVisibleRect(TEMP_RECT))
|| (adjacentTask2 != null && adjacentTask2.getGlobalVisibleRect(TEMP_RECT));
mRecentsView.setTranslationX(prevTranslationX);
}
}
mAnimationFactory.setRecentsAttachedToAppWindow(recentsAttachedToAppWindow, animate);
}
@Override
public void setIsLikelyToStartNewTask(boolean isLikelyToStartNewTask) {
if (mIsLikelyToStartNewTask != isLikelyToStartNewTask) {
mIsLikelyToStartNewTask = isLikelyToStartNewTask;
maybeUpdateRecentsAttachedState();
}
}
@UiThread
public void setShelfState(ShelfAnimState shelfState, Interpolator interpolator, long duration) {
mAnimationFactory.setShelfState(shelfState, interpolator, duration);
boolean wasShelfPeeking = mIsShelfPeeking;
mIsShelfPeeking = shelfState == PEEK;
if (mIsShelfPeeking != wasShelfPeeking) {
maybeUpdateRecentsAttachedState();
}
if (shelfState.shouldPreformHaptic) {
performHapticFeedback();
}
}
private void buildAnimationController() {
if (mGestureEndTarget == HOME || mHasLauncherTransitionControllerStarted) {
// We don't want a new mLauncherTransitionController if mGestureEndTarget == HOME (it
// has its own animation) or if we're already animating the current controller.
return;
}
initTransitionEndpoints(mActivity.getDeviceProfile());
mAnimationFactory.createActivityController(mTransitionDragLength);
}
@Override
public WindowInsets onApplyWindowInsets(View view, WindowInsets windowInsets) {
WindowInsets result = view.onApplyWindowInsets(windowInsets);
buildAnimationController();
return result;
}
private void onAnimatorPlaybackControllerCreated(AnimatorPlaybackController anim) {
mLauncherTransitionController = anim;
mLauncherTransitionController.dispatchSetInterpolator(t -> t * mDragLengthFactor);
mAnimationFactory.adjustActivityControllerInterpolators();
mLauncherTransitionController.dispatchOnStart();
updateLauncherTransitionProgress();
}
@Override
public Intent getLaunchIntent() {
return mOverviewComponentObserver.getOverviewIntent();
}
@Override
public void updateFinalShift() {
SwipeAnimationTargetSet controller = mRecentsAnimationWrapper.getController();
if (controller != null) {
applyTransformUnchecked();
updateSysUiFlags(mCurrentShift.value);
}
if (ENABLE_QUICKSTEP_LIVE_TILE.get()) {
if (mRecentsAnimationWrapper.getController() != null) {
mLiveTileOverlay.update(mClipAnimationHelper.getCurrentRectWithInsets(),
mClipAnimationHelper.getCurrentCornerRadius());
}
}
final boolean passed = mCurrentShift.value >= MIN_PROGRESS_FOR_OVERVIEW;
if (passed != mPassedOverviewThreshold) {
mPassedOverviewThreshold = passed;
if (mMode != Mode.NO_BUTTON) {
performHapticFeedback();
}
}
if (mLauncherTransitionController == null || mLauncherTransitionController
.getAnimationPlayer().isStarted()) {
return;
}
updateLauncherTransitionProgress();
}
private void updateLauncherTransitionProgress() {
if (mGestureEndTarget == HOME) {
return;
}
// Normalize the progress to 0 to 1, as the animation controller will clamp it to that
// anyway. The controller mimics the drag length factor by applying it to its interpolators.
float progress = mCurrentShift.value / mDragLengthFactor;
mLauncherTransitionController.setPlayFraction(
progress <= mShiftAtGestureStart || mShiftAtGestureStart >= 1
? 0 : (progress - mShiftAtGestureStart) / (1 - mShiftAtGestureStart));
}
/**
* @param windowProgress 0 == app, 1 == overview
*/
private void updateSysUiFlags(float windowProgress) {
if (mRecentsView != null) {
TaskView centermostTask = mRecentsView.getTaskViewAt(mRecentsView
.getPageNearestToCenterOfScreen());
int centermostTaskFlags = centermostTask == null ? 0
: centermostTask.getThumbnail().getSysUiStatusNavFlags();
boolean useHomeScreenFlags = windowProgress > 1 - UPDATE_SYSUI_FLAGS_THRESHOLD;
// We will handle the sysui flags based on the centermost task view.
mRecentsAnimationWrapper.setWindowThresholdCrossed(centermostTaskFlags != 0
|| useHomeScreenFlags);
int sysuiFlags = useHomeScreenFlags ? 0 : centermostTaskFlags;
mActivity.getSystemUiController().updateUiState(UI_STATE_OVERVIEW, sysuiFlags);
}
}
@Override
public void onRecentsAnimationStart(SwipeAnimationTargetSet targetSet) {
super.onRecentsAnimationStart(targetSet);
TOUCH_INTERACTION_LOG.addLog("startRecentsAnimationCallback", targetSet.apps.length);
setStateOnUiThread(STATE_APP_CONTROLLER_RECEIVED);
mPassedOverviewThreshold = false;
}
@Override
public void onRecentsAnimationCanceled() {
mRecentsAnimationWrapper.setController(null);
mActivityInitListener.unregister();
setStateOnUiThread(STATE_GESTURE_CANCELLED | STATE_HANDLER_INVALIDATED);
TOUCH_INTERACTION_LOG.addLog("cancelRecentsAnimation");
}
@Override
public void onGestureStarted() {
notifyGestureStartedAsync();
mShiftAtGestureStart = mCurrentShift.value;
setStateOnUiThread(STATE_GESTURE_STARTED);
mGestureStarted = true;
}
/**
* Notifies the launcher that the swipe gesture has started. This can be called multiple times.
*/
@UiThread
private void notifyGestureStartedAsync() {
final T curActivity = mActivity;
if (curActivity != null) {
// Once the gesture starts, we can no longer transition home through the button, so
// reset the force override of the activity visibility
mActivity.clearForceInvisibleFlag(STATE_HANDLER_INVISIBILITY_FLAGS);
}
}
/**
* Called as a result on ACTION_CANCEL to return the UI to the start state.
*/
@Override
public void onGestureCancelled() {
updateDisplacement(0);
setStateOnUiThread(STATE_GESTURE_COMPLETED);
mLogAction = Touch.SWIPE_NOOP;
handleNormalGestureEnd(0, false, new PointF(), true /* isCancel */);
}
/**
* @param endVelocity The velocity in the direction of the nav bar to the middle of the screen.
* @param velocity The x and y components of the velocity when the gesture ends.
* @param downPos The x and y value of where the gesture started.
*/
@Override
public void onGestureEnded(float endVelocity, PointF velocity, PointF downPos) {
float flingThreshold = mContext.getResources()
.getDimension(R.dimen.quickstep_fling_threshold_velocity);
boolean isFling = mGestureStarted && Math.abs(endVelocity) > flingThreshold;
setStateOnUiThread(STATE_GESTURE_COMPLETED);
mLogAction = isFling ? Touch.FLING : Touch.SWIPE;
boolean isVelocityVertical = Math.abs(velocity.y) > Math.abs(velocity.x);
if (isVelocityVertical) {
mLogDirection = velocity.y < 0 ? Direction.UP : Direction.DOWN;
} else {
mLogDirection = velocity.x < 0 ? Direction.LEFT : Direction.RIGHT;
}
mDownPos = downPos;
handleNormalGestureEnd(endVelocity, isFling, velocity, false /* isCancel */);
}
@Override
protected InputConsumer createNewInputProxyHandler() {
endRunningWindowAnim(mGestureEndTarget == HOME /* cancel */);
endLauncherTransitionController();
if (!ENABLE_QUICKSTEP_LIVE_TILE.get()) {
// Hide the task view, if not already hidden
setTargetAlphaProvider(WindowTransformSwipeHandler::getHiddenTargetAlpha);
}
BaseDraggingActivity activity = mActivityControlHelper.getCreatedActivity();
return activity == null
? InputConsumer.NO_OP : new OverviewInputConsumer(activity, null, true);
}
private void endRunningWindowAnim(boolean cancel) {
if (mRunningWindowAnim != null) {
if (cancel) {
mRunningWindowAnim.cancel();
} else {
mRunningWindowAnim.end();
}
}
}
private GestureEndTarget calculateEndTarget(PointF velocity, float endVelocity, boolean isFling,
boolean isCancel) {
final GestureEndTarget endTarget;
final boolean goingToNewTask;
if (mRecentsView != null) {
if (!mRecentsAnimationWrapper.hasTargets()) {
// If there are no running tasks, then we can assume that this is a continuation of
// the last gesture, but after the recents animation has finished
goingToNewTask = true;
} else {
final int runningTaskIndex = mRecentsView.getRunningTaskIndex();
final int taskToLaunch = mRecentsView.getNextPage();
goingToNewTask = runningTaskIndex >= 0 && taskToLaunch != runningTaskIndex;
}
} else {
goingToNewTask = false;
}
final boolean reachedOverviewThreshold = mCurrentShift.value >= MIN_PROGRESS_FOR_OVERVIEW;
if (!isFling) {
if (isCancel) {
endTarget = LAST_TASK;
} else if (mMode == Mode.NO_BUTTON) {
if (mIsShelfPeeking) {
endTarget = RECENTS;
} else if (goingToNewTask) {
endTarget = NEW_TASK;
} else {
endTarget = !reachedOverviewThreshold ? LAST_TASK : HOME;
}
} else {
endTarget = reachedOverviewThreshold && mGestureStarted
? RECENTS
: goingToNewTask
? NEW_TASK
: LAST_TASK;
}
} else {
// If swiping at a diagonal, base end target on the faster velocity.
boolean isSwipeUp = endVelocity < 0;
boolean willGoToNewTaskOnSwipeUp =
goingToNewTask && Math.abs(velocity.x) > Math.abs(endVelocity);
if (mMode == Mode.NO_BUTTON && isSwipeUp && !willGoToNewTaskOnSwipeUp) {
endTarget = HOME;
} else if (mMode == Mode.NO_BUTTON && isSwipeUp && !mIsShelfPeeking) {
// If swiping at a diagonal, base end target on the faster velocity.
endTarget = NEW_TASK;
} else if (isSwipeUp) {
endTarget = !reachedOverviewThreshold && willGoToNewTaskOnSwipeUp
? NEW_TASK : RECENTS;
} else {
endTarget = goingToNewTask ? NEW_TASK : LAST_TASK;
}
}
int stateFlags = OverviewInteractionState.INSTANCE.get(mActivity).getSystemUiStateFlags();
if ((stateFlags & SYSUI_STATE_OVERVIEW_DISABLED) != 0
&& (endTarget == RECENTS || endTarget == LAST_TASK)) {
return LAST_TASK;
}
return endTarget;
}
@UiThread
private void handleNormalGestureEnd(float endVelocity, boolean isFling, PointF velocity,
boolean isCancel) {
PointF velocityPxPerMs = new PointF(velocity.x / 1000, velocity.y / 1000);
long duration = MAX_SWIPE_DURATION;
float currentShift = mCurrentShift.value;
final GestureEndTarget endTarget = calculateEndTarget(velocity, endVelocity,
isFling, isCancel);
float endShift = endTarget.endShift;
final float startShift;
Interpolator interpolator = DEACCEL;
if (!isFling) {
long expectedDuration = Math.abs(Math.round((endShift - currentShift)
* MAX_SWIPE_DURATION * SWIPE_DURATION_MULTIPLIER));
duration = Math.min(MAX_SWIPE_DURATION, expectedDuration);
startShift = currentShift;
interpolator = endTarget == RECENTS ? OVERSHOOT_1_2 : DEACCEL;
} else {
startShift = Utilities.boundToRange(currentShift - velocityPxPerMs.y
* getSingleFrameMs(mContext) / mTransitionDragLength, 0, mDragLengthFactor);
float minFlingVelocity = mContext.getResources()
.getDimension(R.dimen.quickstep_fling_min_velocity);
if (Math.abs(endVelocity) > minFlingVelocity && mTransitionDragLength > 0) {
if (endTarget == RECENTS && mMode != Mode.NO_BUTTON) {
Interpolators.OvershootParams overshoot = new Interpolators.OvershootParams(
startShift, endShift, endShift, endVelocity / 1000,
mTransitionDragLength, mContext);
endShift = overshoot.end;
interpolator = overshoot.interpolator;
duration = Utilities.boundToRange(overshoot.duration, MIN_OVERSHOOT_DURATION,
MAX_SWIPE_DURATION);
} else {
float distanceToTravel = (endShift - currentShift) * mTransitionDragLength;
// we want the page's snap velocity to approximately match the velocity at
// which the user flings, so we scale the duration by a value near to the
// derivative of the scroll interpolator at zero, ie. 2.
long baseDuration = Math.round(Math.abs(distanceToTravel / velocityPxPerMs.y));
duration = Math.min(MAX_SWIPE_DURATION, 2 * baseDuration);
if (endTarget == RECENTS) {
interpolator = OVERSHOOT_1_2;
}
}
}
}
if (endTarget.isLauncher) {
mRecentsAnimationWrapper.enableInputProxy();
}
if (endTarget == HOME) {
setShelfState(ShelfAnimState.CANCEL, LINEAR, 0);
duration = Math.max(MIN_OVERSHOOT_DURATION, duration);
} else if (endTarget == RECENTS) {
mLiveTileOverlay.startIconAnimation();
if (mRecentsView != null) {
int nearestPage = mRecentsView.getPageNearestToCenterOfScreen();
if (mRecentsView.getNextPage() != nearestPage) {
// We shouldn't really scroll to the next page when swiping up to recents.
// Only allow settling on the next page if it's nearest to the center.
mRecentsView.snapToPage(nearestPage, Math.toIntExact(duration));
}
if (mRecentsView.getScroller().getDuration() > MAX_SWIPE_DURATION) {
mRecentsView.snapToPage(mRecentsView.getNextPage(), (int) MAX_SWIPE_DURATION);
}
duration = Math.max(duration, mRecentsView.getScroller().getDuration());
}
if (mMode == Mode.NO_BUTTON) {
setShelfState(ShelfAnimState.OVERVIEW, interpolator, duration);
}
} else if (endTarget == NEW_TASK || endTarget == LAST_TASK) {
// Let RecentsView handle the scrolling to the task, which we launch in startNewTask()
// or resumeLastTask().
if (mRecentsView != null) {
duration = Math.max(duration, mRecentsView.getScroller().getDuration());
}
}
animateToProgress(startShift, endShift, duration, interpolator, endTarget, velocityPxPerMs);
}
private void doLogGesture(GestureEndTarget endTarget) {
DeviceProfile dp = mDp;
if (dp == null || mDownPos == null) {
// We probably never received an animation controller, skip logging.
return;
}
int pageIndex = endTarget == LAST_TASK
? LOG_NO_OP_PAGE_INDEX
: mRecentsView.getNextPage();
UserEventDispatcher.newInstance(mContext).logStateChangeAction(
mLogAction, mLogDirection,
(int) mDownPos.x, (int) mDownPos.y,
ContainerType.NAVBAR, ContainerType.APP,
endTarget.containerType,
pageIndex);
}
/** Animates to the given progress, where 0 is the current app and 1 is overview. */
@UiThread
private void animateToProgress(float start, float end, long duration, Interpolator interpolator,
GestureEndTarget target, PointF velocityPxPerMs) {
mRecentsAnimationWrapper.runOnInit(() -> animateToProgressInternal(start, end, duration,
interpolator, target, velocityPxPerMs));
}
@UiThread
private void animateToProgressInternal(float start, float end, long duration,
Interpolator interpolator, GestureEndTarget target, PointF velocityPxPerMs) {
mGestureEndTarget = target;
maybeUpdateRecentsAttachedState();
if (mGestureEndTarget == HOME) {
HomeAnimationFactory homeAnimFactory;
if (mActivity != null) {
homeAnimFactory = mActivityControlHelper.prepareHomeUI(mActivity);
} else {
homeAnimFactory = new HomeAnimationFactory() {
@NonNull
@Override
public RectF getWindowTargetRect() {
RectF fallbackTarget = new RectF(mClipAnimationHelper.getTargetRect());
Utilities.scaleRectFAboutCenter(fallbackTarget, 0.25f);
return fallbackTarget;
}
@NonNull
@Override
public AnimatorPlaybackController createActivityAnimationToHome() {
return AnimatorPlaybackController.wrap(new AnimatorSet(), duration);
}
};
mStateCallback.addChangeHandler(STATE_LAUNCHER_PRESENT | STATE_HANDLER_INVALIDATED,
isPresent -> mRecentsView.startHome());
}
RectFSpringAnim windowAnim = createWindowAnimationToHome(start, homeAnimFactory);
windowAnim.addAnimatorListener(new AnimationSuccessListener() {
@Override
public void onAnimationSuccess(Animator animator) {
setStateOnUiThread(target.endState);
}
});
windowAnim.start(velocityPxPerMs);
homeAnimFactory.playAtomicAnimation(velocityPxPerMs.y);
mRunningWindowAnim = RunningWindowAnim.wrap(windowAnim);
mLauncherTransitionController = null;
} else {
ValueAnimator windowAnim = mCurrentShift.animateToValue(start, end);
windowAnim.setDuration(duration).setInterpolator(interpolator);
windowAnim.addUpdateListener(valueAnimator -> {
if (mRecentsView != null && mRecentsView.getVisibility() != View.VISIBLE) {
// Views typically don't compute scroll when invisible as an optimization,
// but in our case we need to since the window offset depends on the scroll.
mRecentsView.computeScroll();
}
});
windowAnim.addListener(new AnimationSuccessListener() {
@Override
public void onAnimationSuccess(Animator animator) {
if (target == NEW_TASK && mRecentsView != null
&& mRecentsView.getNextPage() == mRecentsView.getRunningTaskIndex()) {
// We are about to launch the current running task, so use LAST_TASK state
// instead of NEW_TASK. This could happen, for example, if our scroll is
// aborted after we determined the target to be NEW_TASK.
setStateOnUiThread(LAST_TASK.endState);
} else {
setStateOnUiThread(target.endState);
}
}
});
windowAnim.start();
mRunningWindowAnim = RunningWindowAnim.wrap(windowAnim);
}
// Always play the entire launcher animation when going home, since it is separate from
// the animation that has been controlled thus far.
if (mGestureEndTarget == HOME) {
start = 0;
}
// We want to use the same interpolator as the window, but need to adjust it to
// interpolate over the remaining progress (end - start).
TimeInterpolator adjustedInterpolator = Interpolators.mapToProgress(
interpolator, start, end);
if (mLauncherTransitionController == null) {
return;
}
if (start == end || duration <= 0) {
mLauncherTransitionController.dispatchSetInterpolator(t -> end);
} else {
mLauncherTransitionController.dispatchSetInterpolator(adjustedInterpolator);
mAnimationFactory.adjustActivityControllerInterpolators();
}
mLauncherTransitionController.getAnimationPlayer().setDuration(Math.max(0, duration));
if (QUICKSTEP_SPRINGS.get()) {
mLauncherTransitionController.dispatchOnStartWithVelocity(end, velocityPxPerMs.y);
}
mLauncherTransitionController.getAnimationPlayer().start();
mHasLauncherTransitionControllerStarted = true;
}
/**
* Creates an animation that transforms the current app window into the home app.
* @param startProgress The progress of {@link #mCurrentShift} to start the window from.
* @param homeAnimationFactory The home animation factory.
*/
@Override
protected RectFSpringAnim createWindowAnimationToHome(float startProgress,
HomeAnimationFactory homeAnimationFactory) {
RectFSpringAnim anim =
super.createWindowAnimationToHome(startProgress, homeAnimationFactory);
anim.addOnUpdateListener((r, p) -> updateSysUiFlags(Math.max(p, mCurrentShift.value)));
anim.addAnimatorListener(new AnimationSuccessListener() {
@Override
public void onAnimationStart(Animator animation) {
if (mActivity != null) {
removeLiveTileOverlay();
}
}
@Override
public void onAnimationSuccess(Animator animator) {
if (mRecentsView != null) {
mRecentsView.post(mRecentsView::resetTaskVisuals);
}
// Make sure recents is in its final state
maybeUpdateRecentsAttachedState(false);
mActivityControlHelper.onSwipeUpToHomeComplete(mActivity);
}
});
return anim;
}
@Override
public void onConsumerAboutToBeSwitched(SwipeSharedState sharedState) {
if (mGestureEndTarget != null) {
sharedState.canGestureBeContinued = mGestureEndTarget.canBeContinued;
sharedState.goingToLauncher = mGestureEndTarget.isLauncher;
}
if (sharedState.canGestureBeContinued) {
cancelCurrentAnimation(sharedState);
} else {
reset();
}
}
@UiThread
private void resumeLastTask() {
mRecentsAnimationWrapper.finish(false /* toRecents */, null);
TOUCH_INTERACTION_LOG.addLog("finishRecentsAnimation", false);
doLogGesture(LAST_TASK);
reset();
}
@UiThread
private void startNewTask() {
startNewTask(STATE_HANDLER_INVALIDATED, success -> {
if (!success) {
// We couldn't launch the task, so take user to overview so they can
// decide what to do instead of staying in this broken state.
endLauncherTransitionController();
updateSysUiFlags(1 /* windowProgress == overview */);
}
doLogGesture(NEW_TASK);
});
}
private void reset() {
setStateOnUiThread(STATE_HANDLER_INVALIDATED);
}
/**
* Cancels any running animation so that the active target can be overriden by a new swipe
* handle (in case of quick switch).
*/
private void cancelCurrentAnimation(SwipeSharedState sharedState) {
mCanceled = true;
mCurrentShift.cancelAnimation();
if (mLauncherTransitionController != null && mLauncherTransitionController
.getAnimationPlayer().isStarted()) {
mLauncherTransitionController.getAnimationPlayer().cancel();
}
if (mFinishingRecentsAnimationForNewTaskId != -1) {
// If we are canceling mid-starting a new task, switch to the screenshot since the
// recents animation has finished
switchToScreenshot();
TaskView newRunningTaskView = mRecentsView.getTaskView(
mFinishingRecentsAnimationForNewTaskId);
int newRunningTaskId = newRunningTaskView != null
? newRunningTaskView.getTask().key.id
: -1;
mRecentsView.setCurrentTask(newRunningTaskId);
sharedState.setRecentsAnimationFinishInterrupted(newRunningTaskId);
}
}
private void invalidateHandler() {
endRunningWindowAnim(false /* cancel */);
if (mGestureEndCallback != null) {
mGestureEndCallback.run();
}
mActivityInitListener.unregister();
mTaskSnapshot = null;
}
private void invalidateHandlerWithLauncher() {
endLauncherTransitionController();
mRecentsView.onGestureAnimationEnd();
mActivity.getRootView().setOnApplyWindowInsetsListener(null);
removeLiveTileOverlay();
}
private void endLauncherTransitionController() {
setShelfState(ShelfAnimState.CANCEL, LINEAR, 0);
if (mLauncherTransitionController != null) {
mLauncherTransitionController.getAnimationPlayer().end();
mLauncherTransitionController = null;
}
}
private void notifyTransitionCancelled() {
mAnimationFactory.onTransitionCancelled();
}
private void resetStateForAnimationCancel() {
boolean wasVisible = mWasLauncherAlreadyVisible || mGestureStarted;
mActivityControlHelper.onTransitionCancelled(mActivity, wasVisible);
// Leave the pending invisible flag, as it may be used by wallpaper open animation.
mActivity.clearForceInvisibleFlag(INVISIBLE_BY_STATE_HANDLER);
}
private void switchToScreenshot() {
if (ENABLE_QUICKSTEP_LIVE_TILE.get()) {
setStateOnUiThread(STATE_SCREENSHOT_CAPTURED);
} else if (!mRecentsAnimationWrapper.hasTargets()) {
// If there are no targets, then we don't need to capture anything
setStateOnUiThread(STATE_SCREENSHOT_CAPTURED);
} else {
boolean finishTransitionPosted = false;
SwipeAnimationTargetSet controller = mRecentsAnimationWrapper.getController();
if (controller != null) {
// Update the screenshot of the task
if (mTaskSnapshot == null) {
mTaskSnapshot = controller.screenshotTask(mRunningTaskId);
}
final TaskView taskView;
if (mGestureEndTarget == HOME) {
// Capture the screenshot before finishing the transition to home to ensure it's
// taken in the correct orientation, but no need to update the thumbnail.
taskView = null;
} else {
taskView = mRecentsView.updateThumbnail(mRunningTaskId, mTaskSnapshot);
}
if (taskView != null && !mCanceled) {
// Defer finishing the animation until the next launcher frame with the
// new thumbnail
finishTransitionPosted = new WindowCallbacksCompat(taskView) {
// The number of frames to defer until we actually finish the animation
private int mDeferFrameCount = 2;
@Override
public void onPostDraw(Canvas canvas) {
// If we were cancelled after this was attached, do not update
// the state.
if (mCanceled) {
detach();
return;
}
if (mDeferFrameCount > 0) {
mDeferFrameCount--;
// Workaround, detach and reattach to invalidate the root node for
// another draw
detach();
attach();
taskView.invalidate();
return;
}
setStateOnUiThread(STATE_SCREENSHOT_CAPTURED);
detach();
}
}.attach();
}
}
if (!finishTransitionPosted) {
// If we haven't posted a draw callback, set the state immediately.
RaceConditionTracker.onEvent(SCREENSHOT_CAPTURED_EVT, ENTER);
setStateOnUiThread(STATE_SCREENSHOT_CAPTURED);
RaceConditionTracker.onEvent(SCREENSHOT_CAPTURED_EVT, EXIT);
}
}
}
private void finishCurrentTransitionToRecents() {
if (ENABLE_QUICKSTEP_LIVE_TILE.get()) {
setStateOnUiThread(STATE_CURRENT_TASK_FINISHED);
} else if (!mRecentsAnimationWrapper.hasTargets()) {
// If there are no targets, then there is nothing to finish
setStateOnUiThread(STATE_CURRENT_TASK_FINISHED);
} else {
synchronized (mRecentsAnimationWrapper) {
mRecentsAnimationWrapper.finish(true /* toRecents */,
() -> setStateOnUiThread(STATE_CURRENT_TASK_FINISHED));
}
}
TOUCH_INTERACTION_LOG.addLog("finishRecentsAnimation", true);
}
private void finishCurrentTransitionToHome() {
synchronized (mRecentsAnimationWrapper) {
mRecentsAnimationWrapper.finish(true /* toRecents */,
() -> setStateOnUiThread(STATE_CURRENT_TASK_FINISHED),
true /* sendUserLeaveHint */);
}
TOUCH_INTERACTION_LOG.addLog("finishRecentsAnimation", true);
doLogGesture(HOME);
}
private void setupLauncherUiAfterSwipeUpToRecentsAnimation() {
endLauncherTransitionController();
mActivityControlHelper.onSwipeUpToRecentsComplete(mActivity);
mRecentsAnimationWrapper.setDeferCancelUntilNextTransition(true /* defer */,
true /* screenshot */);
mRecentsView.onSwipeUpAnimationSuccess();
RecentsModel.INSTANCE.get(mContext).onOverviewShown(false, TAG);
doLogGesture(RECENTS);
reset();
}
private void setTargetAlphaProvider(TargetAlphaProvider provider) {
mClipAnimationHelper.setTaskAlphaCallback(provider);
updateFinalShift();
}
private synchronized void addLiveTileOverlay() {
if (!mLiveTileOverlayAttached) {
mActivity.getRootView().getOverlay().add(mLiveTileOverlay);
mRecentsView.setLiveTileOverlay(mLiveTileOverlay);
mLiveTileOverlayAttached = true;
}
}
private synchronized void removeLiveTileOverlay() {
if (mLiveTileOverlayAttached) {
mActivity.getRootView().getOverlay().remove(mLiveTileOverlay);
mRecentsView.setLiveTileOverlay(null);
mLiveTileOverlayAttached = false;
}
}
public static float getHiddenTargetAlpha(RemoteAnimationTargetCompat app, float expectedAlpha) {
if (!isNotInRecents(app)) {
return 0;
}
return expectedAlpha;
}
private static boolean isNotInRecents(RemoteAnimationTargetCompat app) {
return app.isNotInRecents
|| app.activityType == RemoteAnimationTargetCompat.ACTIVITY_TYPE_HOME;
}
}