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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 com.android.launcher3.LauncherState.NORMAL;
import static com.android.launcher3.LauncherState.OVERVIEW;
import static com.android.launcher3.LauncherState.OVERVIEW_PEEK;
import static com.android.launcher3.LauncherStateManager.ANIM_ALL;
import static com.android.launcher3.LauncherStateManager.ATOMIC_OVERVIEW_PEEK_COMPONENT;
import static com.android.launcher3.anim.Interpolators.OVERSHOOT_1_2;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.view.HapticFeedbackConstants;
import android.view.MotionEvent;
import android.view.ViewConfiguration;
import com.android.launcher3.Launcher;
import com.android.launcher3.LauncherState;
import com.android.launcher3.anim.AnimatorSetBuilder;
import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Touch;
import com.android.quickstep.util.MotionPauseDetector;
import com.android.quickstep.views.RecentsView;
/**
* Touch controller which handles swipe and hold to go to Overview
*/
public class FlingAndHoldTouchController extends PortraitStatesTouchController {
private static final long PEEK_ANIM_DURATION = 100;
private final MotionPauseDetector mMotionPauseDetector;
private final float mMotionPauseMinDisplacement;
private AnimatorSet mPeekAnim;
public FlingAndHoldTouchController(Launcher l) {
super(l, false /* allowDragToOverview */);
mMotionPauseDetector = new MotionPauseDetector(l);
mMotionPauseMinDisplacement = ViewConfiguration.get(l).getScaledTouchSlop();
}
@Override
protected long getAtomicDuration() {
return 300;
}
@Override
public void onDragStart(boolean start) {
mMotionPauseDetector.clear();
super.onDragStart(start);
if (handlingOverviewAnim()) {
mMotionPauseDetector.setOnMotionPauseListener(isPaused -> {
RecentsView recentsView = mLauncher.getOverviewPanel();
recentsView.setOverviewStateEnabled(isPaused);
if (mPeekAnim != null) {
mPeekAnim.cancel();
}
LauncherState fromState = isPaused ? NORMAL : OVERVIEW_PEEK;
LauncherState toState = isPaused ? OVERVIEW_PEEK : NORMAL;
mPeekAnim = mLauncher.getStateManager().createAtomicAnimation(fromState, toState,
new AnimatorSetBuilder(), ATOMIC_OVERVIEW_PEEK_COMPONENT,
PEEK_ANIM_DURATION);
mPeekAnim.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
mPeekAnim = null;
}
});
mPeekAnim.start();
recentsView.performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY,
HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
});
}
}
/**
* @return Whether we are handling the overview animation, rather than
* having it as part of the existing animation to the target state.
*/
private boolean handlingOverviewAnim() {
return mStartState == NORMAL;
}
@Override
public boolean onDrag(float displacement, MotionEvent event) {
mMotionPauseDetector.setDisallowPause(-displacement < mMotionPauseMinDisplacement);
mMotionPauseDetector.addPosition(displacement, event.getEventTime());
return super.onDrag(displacement, event);
}
@Override
public void onDragEnd(float velocity, boolean fling) {
if (mMotionPauseDetector.isPaused() && handlingOverviewAnim()) {
if (mPeekAnim != null) {
mPeekAnim.cancel();
}
AnimatorSetBuilder builder = new AnimatorSetBuilder();
builder.setInterpolator(AnimatorSetBuilder.ANIM_VERTICAL_PROGRESS, OVERSHOOT_1_2);
builder.setInterpolator(AnimatorSetBuilder.ANIM_WORKSPACE_TRANSLATE, OVERSHOOT_1_2);
AnimatorSet overviewAnim = mLauncher.getStateManager().createAtomicAnimation(
NORMAL, OVERVIEW, builder, ANIM_ALL, ATOMIC_DURATION);
overviewAnim.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
onSwipeInteractionCompleted(OVERVIEW, Touch.SWIPE);
}
});
overviewAnim.start();
} else {
super.onDragEnd(velocity, fling);
}
mMotionPauseDetector.clear();
}
@Override
protected void updateAnimatorBuilderOnReinit(AnimatorSetBuilder builder) {
if (handlingOverviewAnim()) {
// We don't want the state transition to all apps to animate overview,
// as that will cause a jump after our atomic animation.
builder.addFlag(AnimatorSetBuilder.FLAG_DONT_ANIMATE_OVERVIEW);
}
}
}
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