RecentsConfiguration.java revision 4d7b092a866d2fce3e11b5a12cda2b87a83af52d 
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;
18
19import android.content.Context;
20import android.content.res.Configuration;
21import android.graphics.Rect;
22import android.util.DisplayMetrics;
23import android.util.TypedValue;
24
25
26/** A static Recents configuration for the current context
27 * NOTE: We should not hold any references to a Context from a static instance */
28public class RecentsConfiguration {
29    static RecentsConfiguration sInstance;
30
31    DisplayMetrics mDisplayMetrics;
32
33    public Rect systemInsets = new Rect();
34
35    /** Private constructor */
36    private RecentsConfiguration() {}
37
38    /** Updates the configuration to the current context */
39    public static RecentsConfiguration reinitialize(Context context) {
40        if (sInstance == null) {
41            sInstance = new RecentsConfiguration();
42        }
43        sInstance.update(context);
44        return sInstance;
45    }
46
47    /** Returns the current recents configuration */
48    public static RecentsConfiguration getInstance() {
49        return sInstance;
50    }
51
52    /** Updates the state, given the specified context */
53    void update(Context context) {
54        mDisplayMetrics = context.getResources().getDisplayMetrics();
55
56        boolean isPortrait = context.getResources().getConfiguration().orientation ==
57                Configuration.ORIENTATION_PORTRAIT;
58    }
59
60    public void updateSystemInsets(Rect insets) {
61        systemInsets.set(insets);
62    }
63
64    /** Converts from DPs to PXs */
65    public int pxFromDp(float size) {
66        return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
67                size, mDisplayMetrics));
68    }
69    /** Converts from SPs to PXs */
70    public int pxFromSp(float size) {
71        return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP,
72                size, mDisplayMetrics));
73    }
74}
75