src/com/android/launcher3/LauncherAppTransitionManager.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 android.animation.Animator;
import android.app.ActivityOptions;
import android.content.Context;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.view.View;

import com.android.launcher3.util.ResourceBasedOverride;

/**
 * Manages the opening and closing app transitions from Launcher.
 */
public class LauncherAppTransitionManager implements ResourceBasedOverride {

    public static LauncherAppTransitionManager newInstance(Context context) {
        return Overrides.getObject(LauncherAppTransitionManager.class,
                context, R.string.app_transition_manager_class);
    }

    public ActivityOptions getActivityLaunchOptions(Launcher launcher, View v) {
        int left = 0, top = 0;
        int width = v.getMeasuredWidth(), height = v.getMeasuredHeight();
        if (v instanceof BubbleTextView) {
            // Launch from center of icon, not entire view
            Drawable icon = ((BubbleTextView) v).getIcon();
            if (icon != null) {
                Rect bounds = icon.getBounds();
                left = (width - bounds.width()) / 2;
                top = v.getPaddingTop();
                width = bounds.width();
                height = bounds.height();
            }
        }
        return ActivityOptions.makeClipRevealAnimation(v, left, top, width, height);
    }

    public boolean supportsAdaptiveIconAnimation() {
        return false;
    }

    /**
     * Number of animations which run on state properties.
     */
    public int getStateElementAnimationsCount() {
        return 0;
    }

    public Animator createStateElementAnimation(int index, float... values) {
        throw new RuntimeException("Unknown gesture animation " + index);
    }
}