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/*
* Copyright (C) 2019 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.launcher3.uioverrides.touchcontrollers;
import static android.view.View.TRANSLATION_X;
import static com.android.launcher3.LauncherState.ALL_APPS;
import static com.android.launcher3.LauncherState.NORMAL;
import static com.android.launcher3.LauncherState.OVERVIEW;
import static com.android.launcher3.allapps.AllAppsTransitionController.ALL_APPS_PROGRESS;
import static com.android.launcher3.anim.Interpolators.DEACCEL_3;
import static com.android.launcher3.touch.AbstractStateChangeTouchController.SUCCESS_TRANSITION_PROGRESS;
import static com.android.systemui.shared.system.ActivityManagerWrapper.CLOSE_SYSTEM_WINDOWS_REASON_RECENTS;
import android.animation.Animator;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.animation.ValueAnimator;
import android.view.MotionEvent;
import android.view.animation.Interpolator;
import com.android.launcher3.AbstractFloatingView;
import com.android.launcher3.Launcher;
import com.android.launcher3.LauncherState;
import com.android.launcher3.LauncherStateManager.AnimationConfig;
import com.android.launcher3.R;
import com.android.launcher3.Utilities;
import com.android.launcher3.allapps.AllAppsTransitionController;
import com.android.launcher3.anim.AnimationSuccessListener;
import com.android.launcher3.anim.AnimatorPlaybackController;
import com.android.launcher3.anim.AnimatorSetBuilder;
import com.android.launcher3.anim.Interpolators;
import com.android.launcher3.compat.AccessibilityManagerCompat;
import com.android.launcher3.config.BaseFlags;
import com.android.launcher3.touch.SingleAxisSwipeDetector;
import com.android.launcher3.userevent.nano.LauncherLogProto;
import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Touch;
import com.android.launcher3.util.TouchController;
import com.android.quickstep.util.AssistantUtilities;
import com.android.quickstep.views.RecentsView;
import com.android.systemui.shared.system.ActivityManagerWrapper;
/**
* Handles swiping up on the nav bar to go home from launcher, e.g. overview or all apps.
*/
public class NavBarToHomeTouchController implements TouchController,
SingleAxisSwipeDetector.Listener {
private static final Interpolator PULLBACK_INTERPOLATOR = DEACCEL_3;
private final Launcher mLauncher;
private final SingleAxisSwipeDetector mSwipeDetector;
private final float mPullbackDistance;
private boolean mNoIntercept;
private LauncherState mStartState;
private LauncherState mEndState = NORMAL;
private AnimatorPlaybackController mCurrentAnimation;
public NavBarToHomeTouchController(Launcher launcher) {
mLauncher = launcher;
mSwipeDetector = new SingleAxisSwipeDetector(mLauncher, this,
SingleAxisSwipeDetector.VERTICAL);
mPullbackDistance = mLauncher.getResources().getDimension(R.dimen.home_pullback_distance);
}
@Override
public final boolean onControllerInterceptTouchEvent(MotionEvent ev) {
if (ev.getAction() == MotionEvent.ACTION_DOWN) {
mStartState = mLauncher.getStateManager().getState();
mNoIntercept = !canInterceptTouch(ev);
if (mNoIntercept) {
return false;
}
mSwipeDetector.setDetectableScrollConditions(SingleAxisSwipeDetector.DIRECTION_POSITIVE,
false /* ignoreSlop */);
}
if (mNoIntercept) {
return false;
}
onControllerTouchEvent(ev);
return mSwipeDetector.isDraggingOrSettling();
}
private boolean canInterceptTouch(MotionEvent ev) {
boolean cameFromNavBar = (ev.getEdgeFlags() & Utilities.EDGE_NAV_BAR) != 0;
if (!cameFromNavBar) {
return false;
}
if (mStartState == OVERVIEW || mStartState == ALL_APPS) {
return true;
}
if (AbstractFloatingView.getTopOpenView(mLauncher) != null) {
return true;
}
if (BaseFlags.ASSISTANT_GIVES_LAUNCHER_FOCUS.get()
&& AssistantUtilities.isExcludedAssistantRunning()) {
return true;
}
return false;
}
@Override
public final boolean onControllerTouchEvent(MotionEvent ev) {
return mSwipeDetector.onTouchEvent(ev);
}
private float getShiftRange() {
return mLauncher.getDeviceProfile().heightPx;
}
@Override
public void onDragStart(boolean start) {
initCurrentAnimation();
}
private void initCurrentAnimation() {
long accuracy = (long) (getShiftRange() * 2);
final AnimatorSet anim = new AnimatorSet();
if (mStartState == OVERVIEW) {
RecentsView recentsView = mLauncher.getOverviewPanel();
float pullbackDist = mPullbackDistance;
if (!recentsView.isRtl()) {
pullbackDist = -pullbackDist;
}
Animator pullback = ObjectAnimator.ofFloat(recentsView, TRANSLATION_X, pullbackDist);
pullback.setInterpolator(PULLBACK_INTERPOLATOR);
anim.play(pullback);
} else if (mStartState == ALL_APPS) {
AnimatorSetBuilder builder = new AnimatorSetBuilder();
AllAppsTransitionController allAppsController = mLauncher.getAllAppsController();
Animator allAppsProgress = ObjectAnimator.ofFloat(allAppsController, ALL_APPS_PROGRESS,
-mPullbackDistance / allAppsController.getShiftRange());
allAppsProgress.setInterpolator(PULLBACK_INTERPOLATOR);
builder.play(allAppsProgress);
// Slightly fade out all apps content to further distinguish from scrolling.
builder.setInterpolator(AnimatorSetBuilder.ANIM_ALL_APPS_FADE, Interpolators
.mapToProgress(PULLBACK_INTERPOLATOR, 0, 0.5f));
AnimationConfig config = new AnimationConfig();
config.duration = accuracy;
allAppsController.setAlphas(mEndState.getVisibleElements(mLauncher), config, builder);
anim.play(builder.build());
}
AbstractFloatingView topView = AbstractFloatingView.getTopOpenView(mLauncher);
if (topView != null) {
Animator hintCloseAnim = topView.createHintCloseAnim(mPullbackDistance);
if (hintCloseAnim != null) {
hintCloseAnim.setInterpolator(PULLBACK_INTERPOLATOR);
anim.play(hintCloseAnim);
}
}
anim.setDuration(accuracy);
mCurrentAnimation = AnimatorPlaybackController.wrap(anim, accuracy, this::clearState);
}
private void clearState() {
mCurrentAnimation = null;
mSwipeDetector.finishedScrolling();
mSwipeDetector.setDetectableScrollConditions(0, false);
}
@Override
public boolean onDrag(float displacement) {
// Only allow swipe up.
displacement = Math.min(0, displacement);
float progress = Utilities.getProgress(displacement, 0, getShiftRange());
mCurrentAnimation.setPlayFraction(progress);
return true;
}
@Override
public void onDragEnd(float velocity) {
boolean fling = mSwipeDetector.isFling(velocity);
final int logAction = fling ? Touch.FLING : Touch.SWIPE;
float progress = mCurrentAnimation.getProgressFraction();
float interpolatedProgress = PULLBACK_INTERPOLATOR.getInterpolation(progress);
boolean success = interpolatedProgress >= SUCCESS_TRANSITION_PROGRESS
|| (velocity < 0 && fling);
if (success) {
mLauncher.getStateManager().goToState(mEndState, true,
() -> onSwipeInteractionCompleted(mEndState));
if (mStartState != mEndState) {
logStateChange(mStartState.containerType, logAction);
}
AbstractFloatingView topOpenView = AbstractFloatingView.getTopOpenView(mLauncher);
if (topOpenView != null) {
AbstractFloatingView.closeAllOpenViews(mLauncher);
logStateChange(topOpenView.getLogContainerType(), logAction);
}
ActivityManagerWrapper.getInstance()
.closeSystemWindows(CLOSE_SYSTEM_WINDOWS_REASON_RECENTS);
} else {
// Quickly return to the state we came from (we didn't move far).
ValueAnimator anim = mCurrentAnimation.getAnimationPlayer();
anim.setFloatValues(progress, 0);
anim.addListener(new AnimationSuccessListener() {
@Override
public void onAnimationSuccess(Animator animator) {
onSwipeInteractionCompleted(mStartState);
}
});
anim.setDuration(80).start();
}
}
private void onSwipeInteractionCompleted(LauncherState targetState) {
clearState();
mLauncher.getStateManager().goToState(targetState, false /* animated */);
AccessibilityManagerCompat.sendStateEventToTest(mLauncher, targetState.ordinal);
}
private void logStateChange(int startContainerType, int logAction) {
mLauncher.getUserEventDispatcher().logStateChangeAction(logAction,
LauncherLogProto.Action.Direction.UP,
mSwipeDetector.getDownX(), mSwipeDetector.getDownY(),
LauncherLogProto.ContainerType.NAVBAR,
startContainerType,
mEndState.containerType,
mLauncher.getWorkspace().getCurrentPage());
}
}
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