SystemBarScrimViews.java revision 8e548f7025ce930810479a8e628c325d09557fa3 
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
17package com.android.systemui.recents.views;
18
19import android.app.Activity;
20import android.view.View;
21import com.android.systemui.R;
22import com.android.systemui.recents.RecentsConfiguration;
23
24/** Manages the scrims for the various system bars. */
25public 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.taskBarEnterAnimDelay)
68                    .setDuration(mConfig.navBarScrimEnterDuration)
69                    .setInterpolator(mConfig.quintOutInterpolator)
70                    .withStartAction(new Runnable() {
71                        @Override
72                        public void run() {
73                            mStatusBarScrimView.setVisibility(View.VISIBLE);
74                        }
75                    })
76                    .start();
77        }
78        if (mHasNavBarScrim && mShouldAnimateNavBarScrim) {
79            mNavBarScrimView.setTranslationY(mNavBarScrimView.getMeasuredHeight());
80            mNavBarScrimView.animate()
81                    .translationY(0)
82                    .setStartDelay(mConfig.taskBarEnterAnimDelay)
83                    .setDuration(mConfig.navBarScrimEnterDuration)
84                    .setInterpolator(mConfig.quintOutInterpolator)
85                    .withStartAction(new Runnable() {
86                        @Override
87                        public void run() {
88                            mNavBarScrimView.setVisibility(View.VISIBLE);
89                        }
90                    })
91                    .start();
92        }
93    }
94
95    /**
96     * Starts animating the scrim views when leaving Recents (either via launching a task, or
97     * going home).
98     */
99    public void startExitRecentsAnimation() {
100        if (mHasNavBarScrim && mShouldAnimateNavBarScrim) {
101            mNavBarScrimView.animate()
102                    .translationY(mNavBarScrimView.getMeasuredHeight())
103                    .setStartDelay(0)
104                    .setDuration(mConfig.taskBarExitAnimDuration)
105                    .setInterpolator(mConfig.fastOutSlowInInterpolator)
106                    .start();
107        }
108    }
109}
110