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1/*
2 * Copyright (C) 2013 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.statusbar.phone;
18
19import android.animation.Animator;
20import android.animation.AnimatorListenerAdapter;
21import android.content.Context;
22import android.os.ServiceManager;
23import android.view.MotionEvent;
24import android.view.View;
25import android.view.animation.AccelerateInterpolator;
26
27import com.android.internal.statusbar.IStatusBarService;
28import com.android.systemui.R;
29
30public final class NavigationBarTransitions extends BarTransitions {
31
32    private final NavigationBarView mView;
33    private final IStatusBarService mBarService;
34
35    private boolean mLightsOut;
36
37    public NavigationBarTransitions(NavigationBarView view) {
38        super(view, R.drawable.nav_background);
39        mView = view;
40        mBarService = IStatusBarService.Stub.asInterface(
41                ServiceManager.getService(Context.STATUS_BAR_SERVICE));
42    }
43
44    public void init() {
45        applyModeBackground(-1, getMode(), false /*animate*/);
46        applyMode(getMode(), false /*animate*/, true /*force*/);
47    }
48
49    @Override
50    protected void onTransition(int oldMode, int newMode, boolean animate) {
51        super.onTransition(oldMode, newMode, animate);
52        applyMode(newMode, animate, false /*force*/);
53    }
54
55    private void applyMode(int mode, boolean animate, boolean force) {
56
57        // apply to lights out
58        applyLightsOut(isLightsOut(mode), animate, force);
59    }
60
61    private void applyLightsOut(boolean lightsOut, boolean animate, boolean force) {
62        if (!force && lightsOut == mLightsOut) return;
63
64        mLightsOut = lightsOut;
65
66        final View navButtons = mView.getCurrentView().findViewById(R.id.nav_buttons);
67
68        // ok, everyone, stop it right there
69        navButtons.animate().cancel();
70
71        final float navButtonsAlpha = lightsOut ? 0.5f : 1f;
72
73        if (!animate) {
74            navButtons.setAlpha(navButtonsAlpha);
75        } else {
76            final int duration = lightsOut ? LIGHTS_OUT_DURATION : LIGHTS_IN_DURATION;
77            navButtons.animate()
78                .alpha(navButtonsAlpha)
79                .setDuration(duration)
80                .start();
81        }
82    }
83
84    private final View.OnTouchListener mLightsOutListener = new View.OnTouchListener() {
85        @Override
86        public boolean onTouch(View v, MotionEvent ev) {
87            if (ev.getAction() == MotionEvent.ACTION_DOWN) {
88                // even though setting the systemUI visibility below will turn these views
89                // on, we need them to come up faster so that they can catch this motion
90                // event
91                applyLightsOut(false, false, false);
92
93                try {
94                    mBarService.setSystemUiVisibility(0, View.SYSTEM_UI_FLAG_LOW_PROFILE,
95                            "LightsOutListener");
96                } catch (android.os.RemoteException ex) {
97                }
98            }
99            return false;
100        }
101    };
102}
103