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      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.systemui.recents.views;
     18 
     19 import android.app.Activity;
     20 import android.view.View;
     21 import com.android.systemui.R;
     22 import com.android.systemui.recents.RecentsConfiguration;
     23 
     24 /** Manages the scrims for the various system bars. */
     25 public class SystemBarScrimViews {
     26 
     27     RecentsConfiguration mConfig;
     28 
     29     View mStatusBarScrimView;
     30     View mNavBarScrimView;
     31 
     32     boolean mHasNavBarScrim;
     33     boolean mShouldAnimateStatusBarScrim;
     34     boolean mHasStatusBarScrim;
     35     boolean mShouldAnimateNavBarScrim;
     36 
     37     public SystemBarScrimViews(Activity activity, RecentsConfiguration config) {
     38         mConfig = config;
     39         mStatusBarScrimView = activity.findViewById(R.id.status_bar_scrim);
     40         mNavBarScrimView = activity.findViewById(R.id.nav_bar_scrim);
     41     }
     42 
     43     /**
     44      * Prepares the scrim views for animating when entering Recents. This will be called before
     45      * the first draw.
     46      */
     47     public void prepareEnterRecentsAnimation() {
     48         mHasNavBarScrim = mConfig.hasNavBarScrim();
     49         mShouldAnimateNavBarScrim = mConfig.shouldAnimateNavBarScrim();
     50         mHasStatusBarScrim = mConfig.hasStatusBarScrim();
     51         mShouldAnimateStatusBarScrim = mConfig.shouldAnimateStatusBarScrim();
     52 
     53         mNavBarScrimView.setVisibility(mHasNavBarScrim && !mShouldAnimateNavBarScrim ?
     54                 View.VISIBLE : View.INVISIBLE);
     55         mStatusBarScrimView.setVisibility(mHasStatusBarScrim && !mShouldAnimateStatusBarScrim ?
     56                 View.VISIBLE : View.INVISIBLE);
     57     }
     58 
     59     /**
     60      * Starts animating the scrim views when entering Recents.
     61      */
     62     public void startEnterRecentsAnimation() {
     63         if (mHasStatusBarScrim && mShouldAnimateStatusBarScrim) {
     64             mStatusBarScrimView.setTranslationY(-mStatusBarScrimView.getMeasuredHeight());
     65             mStatusBarScrimView.animate()
     66                     .translationY(0)
     67                     .setStartDelay(mConfig.launchedFromHome ?
     68                             mConfig.transitionEnterFromHomeDelay :
     69                             mConfig.transitionEnterFromAppDelay)
     70                     .setDuration(mConfig.navBarScrimEnterDuration)
     71                     .setInterpolator(mConfig.quintOutInterpolator)
     72                     .withStartAction(new Runnable() {
     73                         @Override
     74                         public void run() {
     75                             mStatusBarScrimView.setVisibility(View.VISIBLE);
     76                         }
     77                     })
     78                     .start();
     79         }
     80         if (mHasNavBarScrim && mShouldAnimateNavBarScrim) {
     81             mNavBarScrimView.setTranslationY(mNavBarScrimView.getMeasuredHeight());
     82             mNavBarScrimView.animate()
     83                     .translationY(0)
     84                     .setStartDelay(mConfig.launchedFromHome ?
     85                             mConfig.transitionEnterFromHomeDelay :
     86                             mConfig.transitionEnterFromAppDelay)
     87                     .setDuration(mConfig.navBarScrimEnterDuration)
     88                     .setInterpolator(mConfig.quintOutInterpolator)
     89                     .withStartAction(new Runnable() {
     90                         @Override
     91                         public void run() {
     92                             mNavBarScrimView.setVisibility(View.VISIBLE);
     93                         }
     94                     })
     95                     .start();
     96         }
     97     }
     98 
     99     /**
    100      * Starts animating the scrim views when leaving Recents (either via launching a task, or
    101      * going home).
    102      */
    103     public void startExitRecentsAnimation() {
    104         if (mHasStatusBarScrim && mShouldAnimateStatusBarScrim) {
    105             mStatusBarScrimView.animate()
    106                     .translationY(-mStatusBarScrimView.getMeasuredHeight())
    107                     .setStartDelay(0)
    108                     .setDuration(mConfig.taskViewExitToAppDuration)
    109                     .setInterpolator(mConfig.fastOutSlowInInterpolator)
    110                     .start();
    111         }
    112         if (mHasNavBarScrim && mShouldAnimateNavBarScrim) {
    113             mNavBarScrimView.animate()
    114                     .translationY(mNavBarScrimView.getMeasuredHeight())
    115                     .setStartDelay(0)
    116                     .setDuration(mConfig.taskViewExitToAppDuration)
    117                     .setInterpolator(mConfig.fastOutSlowInInterpolator)
    118                     .start();
    119         }
    120     }
    121 }
    122