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.internal.util;
18 
19 import android.content.res.Resources;
20 import android.graphics.Bitmap;
21 import android.graphics.Canvas;
22 import android.graphics.PorterDuff.Mode;
23 import android.graphics.drawable.Drawable;
24 import android.os.UserHandle;
25 
26 import com.android.internal.R;
27 
28 /**
29  * Helper class that generates default user icons.
30  */
31 public class UserIcons {
32 
33     private static final int[] USER_ICON_COLORS = {
34         R.color.user_icon_1,
35         R.color.user_icon_2,
36         R.color.user_icon_3,
37         R.color.user_icon_4,
38         R.color.user_icon_5,
39         R.color.user_icon_6,
40         R.color.user_icon_7,
41         R.color.user_icon_8
42     };
43 
44     /**
45      * Converts a given drawable to a bitmap.
46      */
convertToBitmap(Drawable icon)47     public static Bitmap convertToBitmap(Drawable icon) {
48         if (icon == null) {
49             return null;
50         }
51         final int width = icon.getIntrinsicWidth();
52         final int height = icon.getIntrinsicHeight();
53         Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
54         Canvas canvas = new Canvas(bitmap);
55         icon.setBounds(0, 0, width, height);
56         icon.draw(canvas);
57         return bitmap;
58     }
59 
60     /**
61      * Returns a default user icon for the given user.
62      *
63      * Note that for guest users, you should pass in {@code UserHandle.USER_NULL}.
64      *
65      * @param resources resources object to fetch user icon / color.
66      * @param userId the user id or {@code UserHandle.USER_NULL} for a non-user specific icon
67      * @param light whether we want a light icon (suitable for a dark background)
68      */
getDefaultUserIcon(Resources resources, int userId, boolean light)69     public static Drawable getDefaultUserIcon(Resources resources, int userId, boolean light) {
70         int colorResId = light ? R.color.user_icon_default_white : R.color.user_icon_default_gray;
71         if (userId != UserHandle.USER_NULL) {
72             // Return colored icon instead
73             colorResId = USER_ICON_COLORS[userId % USER_ICON_COLORS.length];
74         }
75         Drawable icon = resources.getDrawable(R.drawable.ic_account_circle, null).mutate();
76         icon.setColorFilter(resources.getColor(colorResId, null), Mode.SRC_IN);
77         icon.setBounds(0, 0, icon.getIntrinsicWidth(), icon.getIntrinsicHeight());
78         return icon;
79     }
80 }
81