SystemBarScrimViews.java revision 2536c7ed446203ea12b38cf05a88e603f8d1b768 
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.content.Context;
21import android.view.View;
22import android.view.animation.AnimationUtils;
23import android.view.animation.Interpolator;
24import com.android.systemui.R;
25import com.android.systemui.recents.RecentsActivityLaunchState;
26import com.android.systemui.recents.RecentsConfiguration;
27
28/** Manages the scrims for the various system bars. */
29public class SystemBarScrimViews {
30
31    Context mContext;
32    RecentsConfiguration mConfig;
33
34    View mStatusBarScrimView;
35    View mNavBarScrimView;
36
37    boolean mHasNavBarScrim;
38    boolean mShouldAnimateStatusBarScrim;
39    boolean mHasStatusBarScrim;
40    boolean mShouldAnimateNavBarScrim;
41
42    int mNavBarScrimEnterDuration;
43
44    Interpolator mFastOutSlowInInterpolator;
45    Interpolator mQuintOutInterpolator;
46
47    public SystemBarScrimViews(Activity activity) {
48        mContext = activity;
49        mConfig = RecentsConfiguration.getInstance();
50        mStatusBarScrimView = activity.findViewById(R.id.status_bar_scrim);
51        mNavBarScrimView = activity.findViewById(R.id.nav_bar_scrim);
52        mNavBarScrimEnterDuration = activity.getResources().getInteger(
53                R.integer.recents_nav_bar_scrim_enter_duration);
54        mFastOutSlowInInterpolator = AnimationUtils.loadInterpolator(activity,
55                        com.android.internal.R.interpolator.fast_out_slow_in);
56        mQuintOutInterpolator = AnimationUtils.loadInterpolator(activity,
57                com.android.internal.R.interpolator.decelerate_quint);
58    }
59
60    /**
61     * Prepares the scrim views for animating when entering Recents. This will be called before
62     * the first draw.
63     */
64    public void prepareEnterRecentsAnimation() {
65        RecentsActivityLaunchState launchState = mConfig.getLaunchState();
66        mHasNavBarScrim = launchState.hasNavBarScrim();
67        mShouldAnimateNavBarScrim = launchState.shouldAnimateNavBarScrim();
68        mHasStatusBarScrim = launchState.hasStatusBarScrim();
69        mShouldAnimateStatusBarScrim = launchState.shouldAnimateStatusBarScrim();
70
71        mNavBarScrimView.setVisibility(mHasNavBarScrim && !mShouldAnimateNavBarScrim ?
72                View.VISIBLE : View.INVISIBLE);
73        mStatusBarScrimView.setVisibility(mHasStatusBarScrim && !mShouldAnimateStatusBarScrim ?
74                View.VISIBLE : View.INVISIBLE);
75    }
76
77    /**
78     * Starts animating the scrim views when entering Recents.
79     */
80    public void startEnterRecentsAnimation() {
81        RecentsActivityLaunchState launchState = mConfig.getLaunchState();
82        int transitionEnterFromAppDelay = mContext.getResources().getInteger(
83                R.integer.recents_enter_from_app_transition_duration);
84        int transitionEnterFromHomeDelay = mContext.getResources().getInteger(
85                R.integer.recents_enter_from_home_transition_duration);
86
87        if (mHasStatusBarScrim && mShouldAnimateStatusBarScrim) {
88            mStatusBarScrimView.setTranslationY(-mStatusBarScrimView.getMeasuredHeight());
89            mStatusBarScrimView.animate()
90                    .translationY(0)
91                    .setStartDelay(launchState.launchedFromHome ?
92                            transitionEnterFromHomeDelay :
93                            transitionEnterFromAppDelay)
94                    .setDuration(mNavBarScrimEnterDuration)
95                    .setInterpolator(mQuintOutInterpolator)
96                    .withStartAction(new Runnable() {
97                        @Override
98                        public void run() {
99                            mStatusBarScrimView.setVisibility(View.VISIBLE);
100                        }
101                    })
102                    .start();
103        }
104        if (mHasNavBarScrim && mShouldAnimateNavBarScrim) {
105            mNavBarScrimView.setTranslationY(mNavBarScrimView.getMeasuredHeight());
106            mNavBarScrimView.animate()
107                    .translationY(0)
108                    .setStartDelay(launchState.launchedFromHome ?
109                            transitionEnterFromHomeDelay :
110                            transitionEnterFromAppDelay)
111                    .setDuration(mNavBarScrimEnterDuration)
112                    .setInterpolator(mQuintOutInterpolator)
113                    .withStartAction(new Runnable() {
114                        @Override
115                        public void run() {
116                            mNavBarScrimView.setVisibility(View.VISIBLE);
117                        }
118                    })
119                    .start();
120        }
121    }
122
123    /**
124     * Starts animating the scrim views when leaving Recents (either via launching a task, or
125     * going home).
126     */
127    public void startExitRecentsAnimation() {
128        int taskViewExitToAppDuration = mContext.getResources().getInteger(
129                R.integer.recents_task_exit_to_app_duration);
130        if (mHasStatusBarScrim && mShouldAnimateStatusBarScrim) {
131            mStatusBarScrimView.animate()
132                    .translationY(-mStatusBarScrimView.getMeasuredHeight())
133                    .setStartDelay(0)
134                    .setDuration(taskViewExitToAppDuration)
135                    .setInterpolator(mFastOutSlowInInterpolator)
136                    .start();
137        }
138        if (mHasNavBarScrim && mShouldAnimateNavBarScrim) {
139            mNavBarScrimView.animate()
140                    .translationY(mNavBarScrimView.getMeasuredHeight())
141                    .setStartDelay(0)
142                    .setDuration(taskViewExitToAppDuration)
143                    .setInterpolator(mFastOutSlowInInterpolator)
144                    .start();
145        }
146    }
147}
148