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;
18 
19 import android.content.Context;
20 import android.content.res.Resources;
21 import android.graphics.Rect;
22 
23 import com.android.systemui.R;
24 import com.android.systemui.recents.misc.SystemServicesProxy;
25 
26 /**
27  * Application resources that can be retrieved from the application context and are not specifically
28  * tied to the current activity.
29  */
30 public class RecentsConfiguration {
31 
32     private static final int LARGE_SCREEN_MIN_DP = 600;
33     private static final int XLARGE_SCREEN_MIN_DP = 720;
34 
35     /** Levels of svelte in increasing severity/austerity. */
36     // No svelting.
37     public static final int SVELTE_NONE = 0;
38     // Limit thumbnail cache to number of visible thumbnails when Recents was loaded, disable
39     // caching thumbnails as you scroll.
40     public static final int SVELTE_LIMIT_CACHE = 1;
41     // Disable the thumbnail cache, load thumbnails asynchronously when the activity loads and
42     // evict all thumbnails when hidden.
43     public static final int SVELTE_DISABLE_CACHE = 2;
44     // Disable all thumbnail loading.
45     public static final int SVELTE_DISABLE_LOADING = 3;
46 
47     // Launch states
48     public RecentsActivityLaunchState mLaunchState = new RecentsActivityLaunchState();
49 
50     // Since the positions in Recents has to be calculated globally (before the RecentsActivity
51     // starts), we need to calculate some resource values ourselves, instead of relying on framework
52     // resources.
53     public final boolean isLargeScreen;
54     public final boolean isXLargeScreen;
55     public final int smallestWidth;
56 
57     /** Misc **/
58     public boolean fakeShadows;
59     public int svelteLevel;
60 
RecentsConfiguration(Context context)61     public RecentsConfiguration(Context context) {
62         // Load only resources that can not change after the first load either through developer
63         // settings or via multi window
64         SystemServicesProxy ssp = Recents.getSystemServices();
65         Context appContext = context.getApplicationContext();
66         Resources res = appContext.getResources();
67         fakeShadows = res.getBoolean(R.bool.config_recents_fake_shadows);
68         svelteLevel = res.getInteger(R.integer.recents_svelte_level);
69 
70         float screenDensity = context.getResources().getDisplayMetrics().density;
71         smallestWidth = ssp.getDeviceSmallestWidth();
72         isLargeScreen = smallestWidth >= (int) (screenDensity * LARGE_SCREEN_MIN_DP);
73         isXLargeScreen = smallestWidth >= (int) (screenDensity * XLARGE_SCREEN_MIN_DP);
74     }
75 
76     /**
77      * Returns the activity launch state.
78      * TODO: This will be refactored out of RecentsConfiguration.
79      */
getLaunchState()80     public RecentsActivityLaunchState getLaunchState() {
81         return mLaunchState;
82     }
83 }
84