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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.ALL_APPS;
import static com.android.launcher3.LauncherState.HOTSEAT_ICONS;
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.AnimatorSetBuilder.ANIM_ALL_APPS_FADE;
import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_ALL_APPS_HEADER_FADE;
import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_HOTSEAT_SCALE;
import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_HOTSEAT_TRANSLATE;
import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_VERTICAL_PROGRESS;
import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_FADE;
import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_SCALE;
import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_TRANSLATE;
import static com.android.launcher3.anim.Interpolators.ACCEL;
import static com.android.launcher3.anim.Interpolators.DEACCEL_3;
import static com.android.launcher3.anim.Interpolators.LINEAR;
import static com.android.launcher3.anim.Interpolators.OVERSHOOT_1_2;
import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_OVERVIEW_DISABLED;
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.anim.Interpolators;
import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Touch;
import com.android.quickstep.OverviewInteractionState;
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_IN_ANIM_DURATION = 240;
private static final long PEEK_OUT_ANIM_DURATION = 100;
private static final float MAX_DISPLACEMENT_PERCENT = 0.75f;
private final MotionPauseDetector mMotionPauseDetector;
private final float mMotionPauseMinDisplacement;
private final float mMotionPauseMaxDisplacement;
private AnimatorSet mPeekAnim;
public FlingAndHoldTouchController(Launcher l) {
super(l, false /* allowDragToOverview */);
mMotionPauseDetector = new MotionPauseDetector(l);
mMotionPauseMinDisplacement = ViewConfiguration.get(l).getScaledTouchSlop();
mMotionPauseMaxDisplacement = getShiftRange() * MAX_DISPLACEMENT_PERCENT;
}
@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;
long peekDuration = isPaused ? PEEK_IN_ANIM_DURATION : PEEK_OUT_ANIM_DURATION;
mPeekAnim = mLauncher.getStateManager().createAtomicAnimation(fromState, toState,
new AnimatorSetBuilder(), ATOMIC_OVERVIEW_PEEK_COMPONENT, peekDuration);
mPeekAnim.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
mPeekAnim = null;
}
});
mPeekAnim.start();
recentsView.performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY,
HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
mLauncher.getDragLayer().getScrim().animateToSysuiMultiplier(isPaused ? 0 : 1,
peekDuration, 0);
});
}
}
/**
* @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() {
int stateFlags = OverviewInteractionState.INSTANCE.get(mLauncher).getSystemUiStateFlags();
return mStartState == NORMAL && (stateFlags & SYSUI_STATE_OVERVIEW_DISABLED) == 0;
}
@Override
protected AnimatorSetBuilder getAnimatorSetBuilderForStates(LauncherState fromState,
LauncherState toState) {
if (fromState == NORMAL && toState == ALL_APPS) {
AnimatorSetBuilder builder = new AnimatorSetBuilder();
// Fade in prediction icons quickly, then rest of all apps after reaching overview.
float progressToReachOverview = NORMAL.getVerticalProgress(mLauncher)
- OVERVIEW.getVerticalProgress(mLauncher);
builder.setInterpolator(ANIM_ALL_APPS_HEADER_FADE, Interpolators.clampToProgress(ACCEL,
0, ALL_APPS_CONTENT_FADE_THRESHOLD));
builder.setInterpolator(ANIM_ALL_APPS_FADE, Interpolators.clampToProgress(LINEAR,
progressToReachOverview, 1));
// Get workspace out of the way quickly, to prepare for potential pause.
builder.setInterpolator(ANIM_WORKSPACE_SCALE, DEACCEL_3);
builder.setInterpolator(ANIM_WORKSPACE_TRANSLATE, DEACCEL_3);
builder.setInterpolator(ANIM_WORKSPACE_FADE, DEACCEL_3);
return builder;
}
return super.getAnimatorSetBuilderForStates(fromState, toState);
}
@Override
public boolean onDrag(float displacement, MotionEvent event) {
float upDisplacement = -displacement;
mMotionPauseDetector.setDisallowPause(upDisplacement < mMotionPauseMinDisplacement
|| upDisplacement > mMotionPauseMaxDisplacement);
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(ANIM_VERTICAL_PROGRESS, OVERSHOOT_1_2);
if ((OVERVIEW.getVisibleElements(mLauncher) & HOTSEAT_ICONS) != 0) {
builder.setInterpolator(ANIM_HOTSEAT_SCALE, OVERSHOOT_1_2);
builder.setInterpolator(ANIM_HOTSEAT_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 goToTargetState(LauncherState targetState, int logAction) {
if (mPeekAnim != null && mPeekAnim.isStarted()) {
// Don't jump to the target state until overview is no longer peeking.
mPeekAnim.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
FlingAndHoldTouchController.super.goToTargetState(targetState, logAction);
}
});
} else {
super.goToTargetState(targetState, logAction);
}
}
@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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