packages/SystemUI/src/com/android/systemui/recents/views/ViewAnimation.java

/*
 * Copyright (C) 2014 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.systemui.recents.views;

import android.graphics.Rect;
import com.android.systemui.recents.misc.ReferenceCountedTrigger;

/* Common code related to view animations */
public class ViewAnimation {

    /* The animation context for a task view animation into Recents */
    public static class TaskViewEnterContext {
        // A trigger to run some logic when all the animations complete.  This works around the fact
        // that it is difficult to coordinate ViewPropertyAnimators
        ReferenceCountedTrigger postAnimationTrigger;

        // These following properties are updated for each task view we start the enter animation on

        // Whether or not the current task occludes the launch target
        boolean currentTaskOccludesLaunchTarget;
        // The task rect for the current stack
        Rect currentTaskRect;
        // The transform of the current task view
        TaskViewTransform currentTaskTransform;
        // The view index of the current task view
        int currentStackViewIndex;
        // The total number of task views
        int currentStackViewCount;

        public TaskViewEnterContext(ReferenceCountedTrigger t) {
            postAnimationTrigger = t;
        }
    }

    /* The animation context for a task view animation out of Recents */
    public static class TaskViewExitContext {
        // A trigger to run some logic when all the animations complete.  This works around the fact
        // that it is difficult to coordinate ViewPropertyAnimators
        ReferenceCountedTrigger postAnimationTrigger;

        // The translationY to apply to a TaskView to move it off the bottom of the task stack
        int offscreenTranslationY;

        public TaskViewExitContext(ReferenceCountedTrigger t) {
            postAnimationTrigger = t;
        }
    }

}