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1/*
2 * Copyright (C) 2016 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.tv;
18
19import android.app.ActivityManager;
20import android.app.ActivityOptions;
21import android.content.Context;
22import android.content.Intent;
23import android.graphics.Bitmap;
24import android.graphics.Rect;
25import android.os.SystemClock;
26import android.os.UserHandle;
27
28import com.android.systemui.SystemUIApplication;
29import com.android.systemui.recents.Recents;
30import com.android.systemui.recents.RecentsActivityLaunchState;
31import com.android.systemui.recents.RecentsConfiguration;
32import com.android.systemui.recents.RecentsImpl;
33import com.android.systemui.recents.events.EventBus;
34import com.android.systemui.recents.events.activity.RecentsActivityStartingEvent;
35import com.android.systemui.recents.misc.SystemServicesProxy;
36import com.android.systemui.recents.model.RecentsTaskLoader;
37import com.android.systemui.recents.model.TaskStack;
38import com.android.systemui.recents.model.ThumbnailData;
39import com.android.systemui.recents.tv.views.TaskCardView;
40import com.android.systemui.statusbar.tv.TvStatusBar;
41import com.android.systemui.tv.pip.PipManager;
42
43public class RecentsTvImpl extends RecentsImpl{
44    public final static String RECENTS_TV_ACTIVITY =
45            "com.android.systemui.recents.tv.RecentsTvActivity";
46
47    private static final PipManager mPipManager = PipManager.getInstance();
48
49    public RecentsTvImpl(Context context) {
50        super(context);
51    }
52
53    @Override
54    protected void startRecentsActivity(ActivityManager.RunningTaskInfo runningTask,
55            boolean isHomeStackVisible, boolean animate, int growTarget) {
56        RecentsTaskLoader loader = Recents.getTaskLoader();
57
58        // In the case where alt-tab is triggered, we never get a preloadRecents() call, so we
59        // should always preload the tasks now. If we are dragging in recents, reload them as
60        // the stacks might have changed.
61        if (mTriggeredFromAltTab || sInstanceLoadPlan == null) {
62            // Create a new load plan if preloadRecents() was never triggered
63            sInstanceLoadPlan = loader.createLoadPlan(mContext);
64        }
65        if (mTriggeredFromAltTab || !sInstanceLoadPlan.hasTasks()) {
66            loader.preloadTasks(sInstanceLoadPlan, runningTask.id, !isHomeStackVisible);
67        }
68        TaskStack stack = sInstanceLoadPlan.getTaskStack();
69
70        if (!animate) {
71            ActivityOptions opts = ActivityOptions.makeCustomAnimation(mContext, -1, -1);
72            startRecentsActivity(runningTask, opts, false /* fromHome */, false /* fromThumbnail*/);
73            return;
74        }
75
76        boolean hasRecentTasks = stack.getTaskCount() > 0;
77        boolean useThumbnailTransition = (runningTask != null) && !isHomeStackVisible && hasRecentTasks;
78
79        if (useThumbnailTransition) {
80            // Try starting with a thumbnail transition
81            ActivityOptions opts = getThumbnailTransitionActivityOptionsForTV(runningTask,
82                    stack.getTaskCount());
83            if (opts != null) {
84                startRecentsActivity(runningTask, opts, false /* fromHome */, true /* fromThumbnail */);
85            } else {
86                // Fall through below to the non-thumbnail transition
87                useThumbnailTransition = false;
88            }
89        }
90
91        if (!useThumbnailTransition) {
92            startRecentsActivity(runningTask, null, true /* fromHome */, false /* fromThumbnail */);
93        }
94        mLastToggleTime = SystemClock.elapsedRealtime();
95    }
96
97    protected void startRecentsActivity(ActivityManager.RunningTaskInfo runningTask,
98            ActivityOptions opts, boolean fromHome, boolean fromThumbnail) {
99        // Update the configuration based on the launch options
100        RecentsConfiguration config = Recents.getConfiguration();
101        RecentsActivityLaunchState launchState = config.getLaunchState();
102        launchState.launchedFromHome = fromHome;
103        launchState.launchedFromApp = fromThumbnail;
104        launchState.launchedToTaskId = (runningTask != null) ? runningTask.id : -1;
105        launchState.launchedWithAltTab = mTriggeredFromAltTab;
106
107        Intent intent = new Intent();
108        intent.setClassName(RECENTS_PACKAGE, RECENTS_TV_ACTIVITY);
109        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
110                | Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS
111                | Intent.FLAG_ACTIVITY_TASK_ON_HOME);
112
113        if (opts != null) {
114            mContext.startActivityAsUser(intent, opts.toBundle(), UserHandle.CURRENT);
115        } else {
116            mContext.startActivityAsUser(intent, UserHandle.CURRENT);
117        }
118        EventBus.getDefault().send(new RecentsActivityStartingEvent());
119    }
120
121    /**
122     * Creates the activity options for an app->recents transition on TV.
123     */
124    private ActivityOptions getThumbnailTransitionActivityOptionsForTV(
125            ActivityManager.RunningTaskInfo runningTask, int numTasks) {
126        Rect rect = TaskCardView.getStartingCardThumbnailRect(
127            mContext, !mPipManager.isPipShown(), numTasks);
128        SystemServicesProxy ssp = Recents.getSystemServices();
129        ThumbnailData thumbnailData = ssp.getTaskThumbnail(runningTask.id);
130        if (thumbnailData.thumbnail != null) {
131            Bitmap thumbnail = Bitmap.createScaledBitmap(thumbnailData.thumbnail, rect.width(),
132                    rect.height(), false);
133            return ActivityOptions.makeThumbnailAspectScaleDownAnimation(mDummyStackView,
134                    thumbnail, (int) rect.left, (int) rect.top, (int) rect.width(),
135                    (int) rect.height(), mHandler, null);
136        }
137        // If both the screenshot and thumbnail fails, then just fall back to the default transition
138        return getUnknownTransitionActivityOptions();
139    }
140
141    @Override
142    public void onVisibilityChanged(Context context, boolean visible) {
143        SystemUIApplication app = (SystemUIApplication) context;
144        TvStatusBar statusBar = app.getComponent(TvStatusBar.class);
145        if (statusBar != null) {
146            statusBar.updateRecentsVisibility(visible);
147        }
148    }
149}
150