lawnchair/quickstep/src/com/android/launcher3/LauncherAppTransitionManagerImpl.java

/*
 * 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.launcher3;

import static com.android.launcher3.anim.Interpolators.AGGRESSIVE_EASE;
import static com.android.launcher3.anim.Interpolators.LINEAR;
import static com.android.quickstep.TaskViewUtils.findTaskViewToLaunch;

import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.content.Context;
import android.view.View;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;

import com.android.quickstep.TaskViewUtils;
import com.android.quickstep.views.RecentsView;
import com.android.systemui.shared.system.RemoteAnimationTargetCompat;

/**
 * A {@link QuickstepAppTransitionManagerImpl} that also implements recents transitions from
 * {@link RecentsView}.
 */
public final class LauncherAppTransitionManagerImpl extends QuickstepAppTransitionManagerImpl {

    public LauncherAppTransitionManagerImpl(Context context) {
        super(context);
    }

    @Override
    protected boolean isLaunchingFromRecents(@NonNull View v,
            @Nullable RemoteAnimationTargetCompat[] targets) {
        return mLauncher.getStateManager().getState().overviewUi
                && findTaskViewToLaunch(mLauncher.getOverviewPanel(), v, targets) != null;
    }

    @Override
    protected void composeRecentsLaunchAnimator(@NonNull AnimatorSet anim, @NonNull View v,
            @NonNull RemoteAnimationTargetCompat[] appTargets,
            @NonNull RemoteAnimationTargetCompat[] wallpaperTargets, boolean launcherClosing) {
        TaskViewUtils.composeRecentsLaunchAnimator(anim, v, appTargets, wallpaperTargets,
                launcherClosing, mLauncher.getStateManager(), mLauncher.getOverviewPanel(),
                mLauncher.getDepthController());
    }

    @Override
    protected Runnable composeViewContentAnimator(@NonNull AnimatorSet anim, float[] alphas,
            float[] trans) {
        RecentsView overview = mLauncher.getOverviewPanel();
        ObjectAnimator alpha = ObjectAnimator.ofFloat(overview,
                RecentsView.CONTENT_ALPHA, alphas);
        alpha.setDuration(CONTENT_ALPHA_DURATION);
        alpha.setInterpolator(LINEAR);
        anim.play(alpha);
        overview.setFreezeViewVisibility(true);

        ObjectAnimator transY = ObjectAnimator.ofFloat(overview, View.TRANSLATION_Y, trans);
        transY.setInterpolator(AGGRESSIVE_EASE);
        transY.setDuration(CONTENT_TRANSLATION_DURATION);
        anim.play(transY);

        return () -> {
            overview.setFreezeViewVisibility(false);
            overview.setTranslationY(0);
            mLauncher.getStateManager().reapplyState();
        };
    }
}